AIR CONDITIONER AND CONTROL METHOD THEREOF

An air conditioner includes a plurality of temperature sensors, a temperature sensor to-be-detected, and a controller. The plurality of temperature sensors include a first temperature sensor, and the first temperature sensor is configured to detect an ambient temperature in a case where a compressor is in a standby state. The temperature sensor to-be-detected is any of the plurality of temperature sensors and configured to detect a first current temperature of a corresponding region in a case where the compressor is in a running state. The controller is configured to: obtain a first temperature; obtain a second temperature; and determine that the temperature sensor to-be-detected is out of order if the first temperature is greater than or equal to a preset reference temperature and the second temperature is less than a first threshold or greater than a second threshold in a case where the compressor is in the running state.

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Description
CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation application of International Patent Application No. PCT/CN2022/129271, filed on Nov. 2, 2022, which claims priority to Chinese Patent Application No. 202111417244.6, filed on Nov. 25, 2021, which are incorporated herein by reference in their entireties.

TECHNICAL FIELD

The present disclosure relates to the field of air conditioning technologies and, in particular, to an air conditioner and a control method of an air conditioner.

BACKGROUND

Generally, an air conditioner has multiple temperature sensors, and each temperature sensor may detect a temperature of a corresponding region. For example, an outdoor ambient temperature sensor detects a temperature of an outdoor environment. An operating state of the air conditioner may be monitored according to the temperatures detected by the temperature sensors. Therefore, whether the temperature sensors operate normally plays an important role in the air conditioner.

SUMMARY

In an aspect, an air conditioner is provided. The air conditioner includes an outdoor unit, an indoor unit, a plurality of temperature sensors, a temperature sensor to-be-detected, and a controller. The outdoor unit includes a compressor. The indoor unit is connected to the outdoor unit to provide a refrigerant cycle. The plurality of temperature sensors include a first temperature sensor, and the first temperature sensor is configured to detect an ambient temperature in a case where the compressor is in a standby state. The temperature sensor to-be-detected is any one of the plurality of temperature sensors and configured to detect a first current temperature of a corresponding region in a case where the compressor is in a running state. The temperature sensor to-be-detected has an allowable measurement interval, and the allowable measurement interval includes a first threshold and a second threshold. The first threshold is less than the second threshold. The controller is coupled with the plurality of temperature sensors and the compressor. The controller is configured to: obtain a first temperature, the first temperature being obtained according to the ambient temperature; obtain a second temperature, the second temperature being obtained according to the first current temperature; in a case where the compressor is in the running state, determine that the temperature sensor to-be-detected is out of order if the first temperature is greater than or equal to a preset reference temperature and the second temperature is less than the first threshold or greater than the second threshold; and determine that the temperature sensor to-be-detected is normal if the first temperature is greater than or equal to the preset reference temperature and the second temperature is greater than or equal to the first threshold and less than or equal to the second threshold.

In another aspect, a control method of an air conditioner is provided. The air conditioner includes an outdoor unit, an indoor unit, a plurality of temperature sensors, a temperature sensor to-be-detected, and a controller. The outdoor unit includes a compressor. The indoor unit is connected to the outdoor unit to provide a refrigerant cycle. The plurality of temperature sensors include a first temperature sensor, and the first temperature sensor is configured to detect an ambient temperature in a case where the compressor in a standby state. The temperature sensor to-be-detected is any one of the plurality of temperature sensors and configured to detect a first current temperature of a corresponding region in a case where the compressor is in a running state. The temperature sensor to-be-detected has an allowable measurement interval, and the allowable measurement interval includes a first threshold and a second threshold. The first threshold is less than the second threshold. The controller is coupled with the plurality of temperature sensors and the compressor. The method includes: obtaining a first temperature, the first temperature being obtained according to the ambient temperature; obtaining a second temperature, the second temperature being obtained according to the first current temperature; in a case where the compressor is in the running state, determining that the temperature sensor to-be-detected is out of order if the first temperature is greater than or equal to a preset reference temperature and the second temperature is less than the first threshold or greater than the second threshold; and determining that the temperature sensor to-be-detected is normal if the first temperature is greater than or equal to the preset reference temperature and the second temperature is greater than or equal to the first threshold and less than or equal to the second threshold.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a diagram showing a structure of an air conditioner, in accordance with some embodiments;

FIG. 2 is a schematic diagram of an air conditioner, in accordance with some embodiments;

FIG. 3 is a schematic diagram of another air conditioner, in accordance with some embodiments;

FIG. 4 is a flow chart of a control method of an air conditioner, in accordance with some embodiments;

FIG. 5 is a flow chart of another control method of an air conditioner, in accordance with some embodiments;

FIG. 6 is a flow chart of yet another control method of an air conditioner, in accordance with some embodiments; and

FIG. 7 is a flow chart of yet another control method of an air conditioner, in accordance with some embodiments.

 DETAILED DESCRIPTION

Some embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings. However, the described embodiments are merely some but not all embodiments of the present disclosure. All other embodiments obtained by a person of ordinary skill in the art based on embodiments of the present disclosure shall be included in the protection scope of the present disclosure.

Unless the context requires otherwise, throughout the specification and the claims, the term “comprise” and other forms thereof such as the third-person singular form “comprises” and the present participle form “comprising” are construed as an open and inclusive meaning, i.e., “including, but not limited to.” In the description of the specification, the terms such as “one embodiment,” “some embodiments,” “exemplary embodiments,” “example,” “specific example,” or “some examples” are intended to indicate that specific features, structures, materials, or characteristics related to the embodiment(s) or example(s) are included in at least one embodiment or example of the present disclosure. Schematic representations of the above terms do not necessarily refer to the same embodiment(s) or example(s). In addition, the specific features, structures, materials, or characteristics may be included in any one or more embodiments or examples in any suitable manner.

Hereinafter, the terms such as “first” and “second” are used for descriptive purposes only and are not to be construed as indicating or implying the relative importance or implicitly indicating the number of indicated technical features. Thus, features defined by “first” or “second” may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present disclosure, the term “a plurality of” or “the plurality of” means two or more unless otherwise specified.

In the description of some embodiments, the terms “coupled,” and “connected,” and derivatives thereof may be used. The term “connected” should be understood in a broad sense. For example, the term “connected” may represent a fixed connection, a detachable connection, or a one-piece connection, or may represent a direct connection, or may represent an indirect connection through an intermediate medium. The term “coupled” may be used in the description of some embodiments to indicate that two or more components are in direct physical or electrical contact with each other. However, the term “coupled” or “communicatively coupled” may also mean that two or more elements are not in direct contact with each other but still cooperate or interact with each other. The embodiments disclosed herein are not necessarily limited to the content herein.

The phrase “at least one of A, B, and C” has the same meaning as the phrase “at least one of A, B, or C,” both including the following combinations of A, B, and C: only A, only B, only C, a combination of A and B, a combination of A and C, a combination of B and C, and a combination of A, B, and C.

As used herein, the term “if” is, optionally, construed as “when” or “in a case where” or “in response to determining that” or “in response to detecting,” depending on the context. Similarly, depending on the context, the phrase “if it is determined that” or “if [a stated condition or event] is detected” is optionally construed as “in a case where it is determined that” or “in response to determining that” or “in a case where [the stated condition or event] is detected” or “in response to detecting [the stated condition or event].”

The use of the phase “applicable to” or “configured to” herein means an open and inclusive expression, which does not exclude devices that are applicable to or configured to perform additional tasks or steps.

In a case where a temperature of an environment (e.g., an outdoor environment) where an air conditioner is located is rather low, for example, in a case where an outdoor ambient temperature is less than minus 30° C. (also referred to as −30° C.), a temperature sensor disposed in the air conditioner, especially a temperature sensor disposed in an outdoor unit of the air conditioner has a large resistance deviation, as a result, a large measurement deviation in the temperature sensor may be increased. In some examples, as the ambient temperature decreases, the resistance deviation of the temperature sensor increases, and the measurement accuracy of the temperature sensor decreases. In this case, there may be a large deviation between the temperature detected by the temperature sensor and the actual temperature.

In some manners, whether the temperature sensor is out of order may be determined by directly determining whether the temperature detected by the temperature sensor is within an allowable measurement interval of the temperature sensor. If the temperature detected by the temperature sensor is outside the allowable measurement interval, the temperature sensor is determined to be out of order. Here, malfunction of the temperature sensor refers to a short circuit or an open circuit in the temperature sensor.

However, such malfunction determination method has poor reliability and may easily cause misjudgment due to the large measurement deviation of the temperature sensor. For example, some temperature sensors may still operate normally in a case where the outdoor ambient temperature is less than or equal to −30° C. However, since a low outdoor ambient temperature may affect the measurement accuracy of the temperature sensor, resulting in an increase in the measurement deviation of the temperature sensor, the temperature detected by the temperature sensor may exceed the allowable measurement interval. In this case, the temperature sensor is not actually out of order, in fact, the temperature sensor may still detect the temperature. Especially in a case where the outdoor ambient temperature returns to a temperature greater than −30° C., the temperature sensor may accurately detect the temperature.

Therefore, if the temperature sensor is determined to be out of order according to the above method, the malfunction condition of the temperature sensor is misjudged, which affects the operation and the use of the air conditioner.

To this end, some embodiments of the present disclosure provide an air conditioner. The air conditioner first determines the measurement deviation of the temperature sensor, and after the measurement deviation of the temperature sensor meets a relevant condition, that is, in a case where the measurement deviation does not affect the measurement of the temperature sensor, then the air conditioner determines whether the temperature sensor is out of order by determining whether the measurement result of the temperature sensor is within the allowable measurement interval, so that the probability of misjudgment on the malfunction condition of the temperature sensor may be reduced.

FIG. 1 is a diagram showing a structure of an air conditioner, in accordance with some embodiments. As shown in FIG. 1, the air conditioner 1 includes an indoor unit 100 and an outdoor unit 200. The indoor unit 100 is connected with the outdoor unit 200 by means of pipes, so as to transport refrigerant.

The indoor unit 100 includes a first heat exchanger 101. The first heat exchanger 101 is configured to perform heat exchange between indoor air and the refrigerant transported in the first heat exchanger 101. For example, the first heat exchanger 101 serves as an evaporator in a cooling mode of the air conditioner 1 and serves as a condenser in a heating mode of the air conditioner 1.

The outdoor unit 200 includes a compressor 30. The compressor 30 is configured to compress the refrigerant, so as to compress refrigerant with a low pressure to be refrigerant with a high pressure. The compressor 30 may operate in a running state or a standby state. Here, the standby state may be understood as the compressor 30 stops operating, and the running state may be understood as the compressor 30 starts operating.

The outdoor unit 200 further includes a four-way valve 50. The four-way valve 50 is disposed in a refrigerant cycle and configured to switch a flow direction of the refrigerant in the refrigerant cycle, so that the cooling mode or the heating mode of the air conditioner 1 may be achieved.

The outdoor unit 200 further includes a second heat exchanger 201. The second heat exchanger 201 is configured to perform heat exchange between outdoor air and the refrigerant transported in the second heat exchanger 201. For example, the second heat exchanger 201 serves as a condenser in the cooling mode of the air conditioner 1 and serves as an evaporator in the heating mode of the air conditioner 1.

The outdoor unit 200 may further include an expansion valve connected between the first heat exchanger 101 and the second heat exchanger 201. A pressure of the refrigerant flowing through the first heat exchanger 101 and the second heat exchanger 201 is regulated by controlling an opening degree of the expansion valve, so as to regulate a flow rate of the refrigerant flowing between the first heat exchanger 101 and the second heat exchanger 201. It will be noted that the compressor 30, the second heat exchanger 201, the expansion valve, and the first heat exchanger 101 are connected in sequence to form the refrigerant cycle.

In some embodiments, as shown in FIG. 1, the air conditioner 1 further includes a controller 10 configured to control the operation of components in the air conditioner 1. The controller 10 may be a central processing unit (CPU), a general-purpose processor (GPP), a network processor (NP), a digital signal processor (DSP), a microprocessor, a microcontroller, a programmable logic device (PLD), or any combination thereof. The controller 10 may also be other devices with processing functions, such as circuits, devices, or software modules, and the present disclosure is not limited thereto.

In some examples, as shown in FIG. 1, the controller 10 includes a first controller 11 and a second controller 12. The first controller 11 may be disposed in the indoor unit 100, and the second controller 12 may be disposed in the outdoor unit 200. The first controller 11 is coupled with the second controller 12, and information may be exchanged between the first controller 11 and the second controller 12. Moreover, the first heat exchanger 101 is coupled with the first controller 11, and the second heat exchanger 201 is coupled with the second controller 12. The compressor 30 is coupled with the second controller 12 so that the second controller 12 may obtain the current operating state of the compressor 30.

In some embodiments, as shown in FIG. 2, the air conditioner 1 further includes a plurality of temperature sensors 20. Each temperature sensor may be disposed in the indoor unit 100 or the outdoor unit 200.

In some examples, the plurality of temperature sensors 20 include a first temperature sensor 22, a second temperature sensor 23, and a third temperature sensor 24. The first temperature sensor 22 includes a first temperature sub-sensor 221 and a second temperature sub-sensor 222. The second temperature sensor 23 includes a third temperature sub-sensor 231 and a fourth temperature sub-sensor 232.

The first temperature sub-sensor (also referred to as an indoor ambient temperature sensor) 221 and the third temperature sub-sensor 231 each may be disposed in the indoor unit 100 and coupled with the first controller 11. The second temperature sub-sensor (also referred to as an outdoor ambient temperature sensor) 222, the fourth temperature sub-sensor 232, and the third temperature sensor 24 each may be disposed in the outdoor unit 200 and coupled with the second controller 12.

The plurality of temperature sensors 20 each are configured to detect a temperature of a corresponding region.

For example, a region corresponding to the first temperature sub-sensor 221 is a region (also referred to as an indoor environment) where the indoor unit 100 is located, and the first temperature sub-sensor 221 is configured to detect a temperature of the indoor environment. The third temperature sub-sensor 231 is disposed on the first heat exchanger 101, and a corresponding region thereof is a coil region of the first heat exchanger 101. The third temperature sub-sensor 231 is configured to detect a temperature (also referred to as an inner coil temperature) of the coil of the first heat exchanger 101.

A region corresponding to the second temperature sub-sensor 222 is a region (also referred to as an outdoor environment) where the outdoor unit 200 is located, and the second temperature sub-sensor 222 is configured to detect a temperature of the outdoor environment. The fourth temperature sub-sensor 232 is disposed on the second heat exchanger 201, and a corresponding region thereof is a coil region of the second heat exchanger 201. The fourth temperature sub-sensor 232 is configured to detect a temperature (also referred to as an outer coil temperature) of the coil of the second heat exchanger 201. The third temperature sensor 24 is disposed on an exhaust pipe of the compressor 30, and a corresponding region thereof is an exhaust port of the compressor 30. The third temperature sensor 24 is configured to detect an exhaust temperature of the compressor 30.

In some embodiments, the first temperature sensor 22 (e.g., the first temperature sub-sensor 221 and the second temperature sub-sensor 222) is configured to detect an ambient temperature in a case where the compressor 30 is in the standby state. For example, in a case where the compressor 30 is in the running state, the first temperature sensor 22 is configured to detect the ambient temperature in the standby state of the compressor 30 before the running state. Alternatively, in a case where the compressor 30 is in the standby state, the first temperature sensor 22 is configured to detect the current ambient temperature. For example, the first temperature sub-sensor 221 is configured to detect a temperature of the indoor environment in a case where the compressor 30 is in the standby state. The second temperature sub-sensor 222 is configured to detect a temperature of the outdoor environment in a case where the compressor 30 is in the standby state.

The ambient temperature is related to the operating state of the compressor 30. Since the compressor 30 may generate heat during operation, the heat is transferred to the environment by means of heat transfer or heat radiation, so as to affect the ambient temperature. For example, the heat generated by the compressor 30 during operation increases the ambient temperature. In this case, the ambient temperature detected by the first temperature sensor 22 is the temperature affected by the heat of the compressor 30, and such temperature cannot be used as an accurate ambient temperature. In a case where the compressor 30 is in the standby state, since the compressor 30 has stopped operating, the compressor 30 does not affect the ambient temperature, and the ambient temperature detected by the first temperature sensor 22 is relatively accurate.

In some examples, the standby state before the current running state of the compressor 30 may be a latest standby state before the current running state of the compressor 30. Since time from an end moment of the latest standby state before the current running state to a current moment of the running state is short, it may be considered that the ambient temperature changes little during such process, so that the ambient temperature detected by the first temperature sensor 22 in the latest standby state of the compressor 30 may accurately reflect the temperature of the surrounding environment.

In some embodiments, as shown in FIG. 1, the air conditioner 1 further includes a temperature sensor to-be-detected 21. The temperature sensor to-be-detected 21 is any one of the plurality of temperature sensors 20. In some examples, the temperature sensor to-be-detected 21 is any one of the first temperature sub-sensor 221, the second temperature sub-sensor 222, the third temperature sub-sensor 231, the fourth temperature sub-sensor 232, and the third temperature sensor 24. It will be noted that the temperature sensor to-be-detected 21 is a temperature sensor in the air conditioner 1 that needs to be evaluated as to whether malfunction occurs.

The temperature sensor to-be-detected 21 is configured to detect a first current temperature of a corresponding region in a case where the compressor 30 is in the standby state. Here, the standby state is a standby state of the compressor 30 before the current running state. The temperature sensor to-be-detected 21 has an allowable measurement interval, and the allowable measurement interval includes a first threshold and a second threshold. The first threshold and the second threshold are two endpoints of the allowable measurement interval, respectively, and the first threshold is less than the second threshold.

The first threshold may be a minimum temperature that may be measured by the temperature sensor to-be-detected 21, and the second threshold may be a maximum temperature that may be measured by the temperature sensor to-be-detected 21. For example, in a case where the allowable measurement interval of the temperature sensor to-be-detected 21 is a range of minus 40° C. (i.e., −40° C.) to 110° C., it means that the temperature that may be detected by the temperature sensor to-be-detected 21 is a temperature greater than or equal to −40° C. and less than or equal to 110° C. Here, −40° C. is the first threshold of the allowable measurement interval, and 110° C. is the second threshold of the allowable measurement interval.

The corresponding region of the temperature sensor to-be-detected 21 may be determined according to an installation position of the temperature sensor to-be-detected 21. The corresponding region may be different as the installation positions of the temperature sensor to-be-detected 21 are different. Here, for the corresponding region, reference may be made to the corresponding regions of the first temperature sub-sensor 221, the second temperature sub-sensor 222, the third temperature sub-sensor 231, the fourth temperature sub-sensor 232, and the third temperature sensor 24 described above, and details will not be repeated herein.

The allowable measurement interval of the temperature sensor to-be-detected 21 is a temperature range that may be measured by the temperature sensor to-be-detected 21. The allowable measurement interval is related to a physical characteristic of the temperature sensor to-be-detected 21. For example, the allowable measurement interval is determined by a resistance in the temperature sensor to-be-detected 21.

Some embodiments of the present disclosure are described by considering an example in which the first temperature sensor 22 is disposed in the outdoor unit 200 (that is, the first temperature sensor 22 includes the second temperature sub-sensor 222), and the temperature sensor to-be-detected 21 is a temperature sensor disposed in the outdoor unit 200.

Steps performed by the controller 10 in some embodiments of the present disclosure will be described in detail below.

In some embodiments, the controller 10 is configured to: obtain a first temperature; obtain a second temperature; in a case where the compressor 30 is in the running state, determine that the temperature sensor to-be-detected 21 is out of order if the first temperature is greater than or equal to a preset reference temperature and the second temperature is less than the first threshold and greater than the second threshold; or, determine that the temperature sensor to-be-detected 21 is normal if the first temperature is greater than or equal to the preset reference temperature and the second temperature is greater than or equal to the first threshold and less than or equal to the second threshold.

Here, the first temperature may be obtained according to the ambient temperature. For example, in a case where the compressor 30 is in the running state, the first temperature is obtained according to the ambient temperature in the standby state of the compressor 30 before the running state. Alternatively, in a case where the compressor 30 is in the standby state, the first temperature is obtained according to the current ambient temperature. The second temperature may be obtained according to the first current temperature.

For example, the first temperature sensor 22 sends the detected ambient temperature to the controller 10, the temperature sensor to-be-detected 21 also sends the detected first current temperature to the controller 10, and the controller 10 obtains the ambient temperature and the first current temperature, and obtains the first temperature according to the ambient temperature, and obtains the second temperature according to the first current temperature.

The ambient temperature may affect the measurement accuracy of the temperature sensor to-be-detected 21. Therefore, the preset reference temperature may be a lower limit of the ambient temperature (e.g., the outdoor ambient temperature) ensuring that the measurement deviation of the temperature sensor to-be-detected 21 does not affect the measurement result of the temperature sensor to-be-detected 21. That is to say, in a case where the ambient temperature is greater than or equal to the preset reference temperature, the measurement accuracy of the temperature sensor to-be-detected 21 is high and the measurement deviation is small, and the measurement deviation does not affect the measurement result of the temperature sensor to-be-detected 21. In a case where the ambient temperature is less than the preset reference temperature, the measurement accuracy of the temperature sensor to-be-detected 21 is low and the measurement deviation is large, and the measurement deviation may affect the measurement result of the temperature sensor to-be-detected 21. Therefore, in some embodiments of the present disclosure, the deviation of the measurement result of the temperature sensor to-be-detected 21 may be obtained by comparing the ambient temperature with the preset reference temperature.

It will be noted that the preset reference temperature may be related to a resistance of the temperature sensor to-be-detected 21. In a case where the ambient temperature changes, the resistance of the temperature sensor to-be-detected 21 may also change. In some examples, a resistance deviation of the temperature sensor to-be-detected 21 changes as the ambient temperature changes. For example, the resistance deviation of the temperature sensor to-be-detected 21 increases as the ambient temperature decreases. Moreover, the measurement deviation of the temperature sensor to-be-detected 21 also increases as the resistance deviation of the temperature sensor to-be-detected 21 increases, which affects the measurement result of the temperature sensor to-be-detected 21.

For example, in a case where the ambient temperature is less than −30° C., the resistance deviation of the temperature sensor to-be-detected 21 is large, resulting in an increase in the measurement deviation of the temperature sensor to-be-detected 21. In a case where the ambient temperature is greater than or equal to −30° C., for example, in a case where the ambient temperature reaches minus 25° C. (i.e., −25° C.), the resistance deviation of the temperature sensor to-be-detected 21 is small, and the measurement deviation of the temperature sensor to-be-detected 21 may be ignored. In this case, −25° C. may serve as the preset reference temperature of the temperature sensor to-be-detected 21.

It will be noted that the preset reference temperatures of different temperature sensors to-be-detected 21 may be same or different. For ease of description, some embodiments of the present disclosure are described by considering an example in which the preset reference temperatures of different temperature sensors to-be-detected 21 are same. For example, the preset reference temperature of each temperature sensor to-be-detected 21 is −25° C.

In some embodiments, as shown in FIG. 3, the air conditioner 1 further includes a memory 40. The allowable measurement interval and the preset reference temperature corresponding to the temperature sensor to-be-detected 21 may be stored in the memory 40. Alternatively, the allowable measurement interval and the preset reference temperature corresponding to the temperature sensor to-be-detected 21 may also be stored in the controller 10. For example, the memory 40 includes a first memory 41 and a second memory 42. The first memory 41 is coupled with the first controller 11, and the second memory 42 is coupled with the second controller 12.

In a case where the controller 10 (e.g., the second controller 12) determines that the compressor 30 is in the running state, the controller 10 may determine the measurement deviation of the temperature sensor to-be-detected 21 according to the relationship between the first temperature and the preset reference temperature.

After obtaining the first temperature, the controller 10 compares the first temperature with the preset reference temperature stored in the memory 40. Since the first temperature is obtained according to the ambient temperature in a case where the compressor 30 is in the standby state, the measurement deviation of the temperature sensor to-be-detected 21 may be accurately obtained by comparing the first temperature with the preset reference temperature.

In some examples, the first temperature is the outdoor ambient temperature detected by the first temperature sensor 22 (e.g., the second temperature sub-sensor 222) at a moment when the compressor 30 ends the standby state. Alternatively, the first temperature may also be any of the plurality of ambient temperatures detected by the first temperature sensor 22 during the standby process of the compressor 30. For example, in a case where the compressor 30 is in the standby state for a short time, the ambient temperature (or the first temperature) is relatively stable and changes little during the standby process. Therefore, the first temperature may be any of the plurality of ambient temperatures detected by the first temperature sensor 22 in a case where the compressor 30 is in the standby state.

For example, in a case where the second controller 12 determines that the first temperature detected by the second temperature sub-sensor 222 is greater than or equal to the preset reference temperature, it indicates that the current outdoor ambient temperature has little impact on the measurement accuracy of the temperature sensor to-be-detected 21 and does not affect the measurement result of the temperature sensor to-be-detected 21. Therefore, in a case where the compressor 30 is in the running state, the first current temperature (or the second temperature) detected by the temperature sensor to-be-detected 21 is not affected by the measurement deviation and is a relatively accurate ambient temperature. In this case, it is possible to accurately determine whether the temperature sensor to-be-detected 21 is out of order according to the relationship between the second temperature and the allowable measurement interval of the temperature sensor to-be-detected 21.

In a case where the compressor 30 is in the running state, the controller 10 obtains the second temperature, wherein the first controller 11 or the second controller 12 obtains the second temperature. If the temperature sensor to-be-detected 21 is disposed in the indoor unit 100, the second temperature may be obtained by the first controller 11. If the temperature sensor to-be-detected 21 is disposed in the outdoor unit 200, the second temperature may be obtained by the second controller 12.

In some examples, in a case where the temperature sensor to-be-detected 21 is the second temperature sub-sensor 222, the first current temperature is the current temperature of the outdoor environment. In a case where the temperature sensor to-be-detected 21 is the fourth temperature sub-sensor 232, the first current temperature is the current temperature of the outdoor coil. Alternatively, in a case where the temperature sensor to-be-detected 21 is the third temperature sensor 24, the first current temperature is the current exhaust temperature of the compressor 30.

The controller 10 determines the relationship between the second temperature and the allowable measurement interval of the temperature sensor to-be-detected 21 after obtaining the second temperature. In a case where the second temperature is outside the allowable measurement interval of the temperature sensor to-be-detected 21 (that is, in a case where the second temperature is less than the first threshold, or greater than the second threshold), the temperature currently measured by the temperature sensor to-be-detected 21 exceeds the allowable measurement interval, so that the temperature sensor to-be-detected 21 is determined to be out of order.

In a case where the second temperature is within the allowable measurement interval of the temperature sensor to-be-detected 21 (that is, in a case where the second temperature is greater than or equal to the first threshold and less than or equal to the second threshold), the temperature currently measured by the temperature sensor to-be-detected 21 does not exceed the allowable measurement interval, so that the temperature sensor to-be-detected 21 is determined to be in a normal operating state.

The air conditioner 1 provided in some embodiments of the present disclosure determines the measurement deviation of the temperature sensor to-be-detected 21 by comparing the ambient temperature in the standby state of the compressor 30 before the current running state with the preset reference temperature. In a case where the measurement deviation of the temperature sensor to-be-detected 21 does not affect the measurement result of the temperature sensor to-be-detected 21, the malfunction condition of the temperature sensor to-be-detected 21 may be determined after the relationship between the first current temperature detected by the temperature sensor to-be-detected 21 and the allowable measurement interval is determined.

Therefore, compared with the solution of directly determining whether the temperature sensor to-be-detected 21 is out of order by determining whether the temperature detected by the temperature sensor to-be-detected 21 is within the allowable measurement interval, the judgment result of the air conditioner 1 provided in some embodiments of the present disclosure is more accurate, which further reduces the probability of malfunction misjudgment of the temperature sensor to-be-detected 21. Moreover, since the occurrence of malfunction misjudgments of the temperature sensor to-be-detected 21 is reduced, the reliability and use of the air conditioner 1 may also be improved.

In some embodiments, the controller 10 is further configured to obtain operating time of the compressor 30. The operating time is time of the compressor 30 operating from an end moment of the standby state before the running state to a current moment of the running state. In a case where the compressor 30 is in the running state, if the first temperature is less than the preset reference temperature, the operating time is greater than or equal to a preset time, and the second temperature is less than the first threshold or greater than the second threshold, the temperature sensor to-be-detected 21 is determined to be out of order.

In a case where the compressor 30 is in the running state, if the first temperature obtained by the controller 10 is less than the preset reference temperature, it indicates that the ambient temperature may affect the measurement accuracy of the temperature sensor to-be-detected 21. In this case, if it is determined that the temperature sensor to-be-detected 21 is out of order according to the current temperature detected by the temperature sensor to-be-detected 21 being not in the allowable measurement interval, it may cause a misjudgment, thereby affecting the operation of the air conditioner 1. Therefore, in some examples, in a case where the first temperature is less than the preset reference temperature, the controller 10 may determine that the temperature sensor to-be-detected 21 is normal.

In some other examples, since the compressor 30 continues to generate heat after entering the current running state from the standby state, the heat is transferred to the temperature sensor to-be-detected 21. The temperature of the temperature sensor to-be-detected 21 increases as the operating time of the compressor 30 increases, so that the measurement accuracy of the temperature sensor to-be-detected 21 increases. In a case where the operating time reaches the preset time, the measurement deviation of the temperature sensor to-be-detected 21 is small and does not affect the measurement result. In this case, the malfunction condition of the temperature sensor to-be-detected 21 may be accurately determined by determining the relationship between the second temperature and the allowable measurement interval of the temperature sensor to-be-detected 21. In this way, the accuracy of malfunction determination of the temperature sensor to-be-detected 21 may be further improved.

It will be noted that the preset time may be operating time of the compressor 30 when the measurement deviation of the temperature sensor to-be-detected 21 does not affect the measurement result. In some examples, corresponding preset time is different as the temperature sensors to-be-detected 21 are different. For example, in a case where the temperature sensor to-be-detected 21 is the third temperature sensor 24, the preset time may be 10 minutes.

In a case where the operating time of the compressor 30 is less than the preset time, the measurement deviation of the temperature sensor to-be-detected 21 may affect the measurement result of the temperature sensor to-be-detected 21. In this case, the controller 10 cannot determine that the temperature sensor to-be-detected 21 is out of order by the second temperature being outside the allowable measurement interval; or the controller 10 may determine that the temperature sensor to-be-detected 21 is normal; or the controller 10 may determine the malfunction condition of the temperature sensor to-be-detected 21 after the operating time of the compressor 30 reaches the preset time, so as to further reduce the malfunction misjudgment rate of the temperature sensor to-be-detected 21.

In some embodiments, the temperature sensor to-be-detected 21 is further configured to detect a second current temperature of the corresponding region in a case where the compressor 30 is in the standby state.

Moreover, the controller 10 is further configured to: obtain a third temperature; determine that the temperature sensor to-be-detected 21 is out of order if the third temperature is less than the first threshold or greater than the second threshold, in a case where the compressor 30 is in the standby state; or determine that the temperature sensor to-be-detected 21 is normal if the third temperature is greater than or equal to the first threshold and less than or equal to the second threshold. Here, the third temperature may be obtained according to the second current temperature.

In some examples, if the temperature sensor to-be-detected 21 is the first temperature sensor 22 (e.g., the second temperature sub-sensor 222) or the second temperature sensor 23 (e.g., the fourth temperature sub-sensor 232), when the compressor 30 ends the running state and enters the standby state, the temperature sensor to-be-detected 21 is heated during the running state of the compressor 30 before the current standby state. The measurement accuracy of the temperature sensor to-be-detected 21 increases as the temperature of the temperature sensor to-be-detected 21 increases. Therefore, in a case where the compressor 30 is in the standby state after ending the running state, the measurement deviation of the temperature sensor to-be-detected 21 may be small and may not affect the measurement result of the temperature sensor to-be-detected 21, so that the second current temperature detected by the temperature sensor to-be-detected 21 may be accurate in a case where the compressor 30 is in the standby state.

Therefore, in a case where the compressor 30 is in the standby state, the controller 10 may determine whether the temperature sensor to-be-detected 21 is out of order according to the relationship between the third temperature and the allowable measurement interval. In a case where the third temperature is outside the allowable measurement interval of the temperature sensor to-be-detected 21, it is determined that the temperature sensor to-be-detected 21 is out of order. In a case where the third temperature is within the allowable measurement interval of the temperature sensor to-be-detected 21, it is determined that the temperature sensor to-be-detected 21 is normal.

In some embodiments, the controller 10 is further configured to: in a case where the compressor 30 is in the standby state, determine that the temperature sensor to-be-detected 21 is out of order if the first temperature is greater than or equal to the preset reference temperature and the third temperature is less than the first threshold or greater than the second threshold.

Considering an example in which the temperature sensor to-be-detected 21 is the third temperature sensor 24, the measurement deviation of the third temperature sensor 24 is large due to the third temperature sensor 24 being at a low ambient temperature. Therefore, whether the ambient temperature in a case where the compressor 30 is in the standby state affects the measurement accuracy of the temperature sensor to-be-detected 21 may be first determined, and then the malfunction condition of the temperature sensor to-be-detected 21 may be determined by determining whether the second current temperature detected by the temperature sensor to-be-detected 21 is within the allowable measurement interval, so as to further reduce the malfunction misjudgment rate of the temperature sensor to-be-detected 21.

If the first temperature is greater than or equal to the preset reference temperature, it indicates that the current measurement deviation of the temperature sensor to-be-detected 21 does not affect the measurement result of the temperature sensor to-be-detected 21. In this case, the controller 10 may determine whether the temperature sensor to-be-detected 21 is out of order by determining whether the third temperature is within the allowable measurement interval of the temperature sensor to-be-detected 21.

If the first temperature is less than the preset reference temperature, the measurement deviation of the temperature sensor to-be-detected 21 may be large, so that the controller 10 cannot determine that the temperature sensor to-be-detected 21 is out of order according to the third temperature being outside the allowable measurement interval of the temperature sensor to-be-detected 21. Therefore, in some examples, the controller 10 determines that the temperature sensor to-be-detected 21 is in a normal state.

In some embodiments, the controller 10 is further configured to: obtain the first temperature by performing analog-to-digital conversion on the ambient temperature; obtain the second temperature by performing analog-to-digital conversion on the first current temperature; and obtain the third temperature by performing analog-to-digital conversion on the second current temperature.

In some examples, during the operating process of the air conditioner 1, the controller 10 (e.g., at least one of the first controller 11 or the second controller 12) may perform analog-to-digital conversion on the obtained ambient temperature, the obtained first current temperature, and the obtained second current temperature, so as to obtain the first temperature, the second temperature, and the third temperature, respectively. Moreover, the controller 10 may determine whether the temperature sensor to-be-detected 21 is out of order by comparing the first temperature with the preset reference temperature and comparing each of the second temperature and the third temperature with the first threshold and the second threshold of the allowable measurement interval.

In some examples, the preset reference temperature, the first threshold, and the second threshold of the allowable measurement interval each may be temperatures after analog-to-digital conversion. It may be possible to improve the efficiency of the malfunction determination process by using the temperature after analog-to-digital conversion to perform the above comparison operation.

Some embodiments of the present disclosure further provide a control method of an air conditioner. Referring to FIG. 1, the air conditioner may be the air conditioner 1 in any of the embodiments. The air conditioner 1 includes a compressor 30, a plurality of temperature sensors 20, a temperature sensor to-be-detected 21, and a controller 10. The plurality of temperature sensors 20 include a first temperature sensor 22, and the temperature sensor to-be-detected 21 is any one of the plurality of temperature sensors 20.

FIG. 4 is a flow chart of a control method of an air conditioner, in accordance with some embodiments. As shown in FIG. 4, the control method of the air conditioner includes step 411 to step 414.

In step 411, a first temperature is obtained.

The first temperature may be obtained according to an ambient temperature. For example, in a case where the compressor 30 is in a running state, the first temperature is obtained according to the ambient temperature in a standby state of the compressor 30 before the running state. Alternatively, in a case where the compressor 30 is in the standby state, the first temperature is obtained according to the current ambient temperature.

In step 412, a second temperature is obtained.

The second temperature may be obtained according to a first current temperature of a corresponding region detected by the temperature sensor to-be-detected 21 in a case where the compressor 30 is in the current running state. For example, the temperature sensor to-be-detected 21 is disposed in the outdoor unit 200, the temperature sensor to-be-detected 21 may send the detected first current temperature to the second controller 12, and the second controller 12 obtains the second temperature after performing analog-to-digital conversion on the first current temperature.

In step 413, the temperature sensor to-be-detected 21 is determined to be out of order if it is determined that the first temperature is greater than or equal to a preset reference temperature and the second temperature is less than a first threshold or greater than a second threshold, in a case where the compressor 30 is in the running state.

The temperature sensor to-be-detected 21 has an allowable measurement interval, and the allowable measurement interval includes the first threshold and the second threshold. The first threshold and the second threshold are two endpoints of the allowable measurement interval, respectively, and the first threshold is less than the second threshold.

In a case where the first temperature is greater than or equal to the preset reference temperature, it indicates that the measurement deviation of the temperature sensor to-be-detected 21 does not affect the measurement result of the temperature sensor to-be-detected 21. In this case, the second temperature may be compared with the allowable measurement interval of the temperature sensor to-be-detected 21. If the second temperature is less than the first threshold or greater than the second threshold, it is determined that the temperature sensor to-be-detected 21 is out of order.

In step 414, the temperature sensor to-be-detected 21 is determined to be normal if it is determined that the first temperature is greater than or equal to the preset reference temperature and the second temperature is greater than or equal to the first threshold and less than or equal to the second threshold, in a case where the compressor 30 is in the running state.

FIG. 5 is a flow chart of another control method of an air conditioner, in accordance with some embodiments. Referring to FIG. 1, the air conditioner may be the air conditioner 1 in any of the embodiments. The air conditioner 1 includes a compressor 30, a plurality of temperature sensors 20, a temperature sensor to-be-detected 21, and a controller 10. The plurality of temperature sensors 20 include a first temperature sensor 22, and the temperature sensor to-be-detected 21 is any one of the plurality of temperature sensors 20.

As shown in FIG. 5, the control method of the air conditioner includes step 511 to step 520.

In step 511, an operating state of the compressor 30 is obtained.

For example, the controller 10 (e.g., the second controller 12) is coupled with the compressor 30, so as to obtain the current operating state of the compressor 30.

In step 512, whether the compressor 30 is in a running state is determined.

If it is determined that the compressor 30 is in the running state, step 513 is performed. If it is determined that the compressor 30 is not in the running state (that is, the compressor 30 is in a standby state), step 519 is performed.

In step 513, a first temperature is obtained.

Step 513 is similar to step 411 in the above embodiments, and the details will not be repeated herein.

In step 514, whether the first temperature is greater than or equal to a preset reference temperature is determined.

If it is determined that the first temperature is less than the preset reference temperature, step 517 is performed. If it is determined that the first temperature is greater than or equal to the preset reference temperature, step 515 is performed.

In step 515, a second temperature is obtained.

Step 515 is similar to step 412 in the above embodiments, and the details will not be repeated herein.

In step 516, whether the second temperature is less than a first threshold or greater than a second threshold is determined.

If it is determined that the second temperature is less than the first threshold or greater than the second threshold, step 518 is performed. If it is determined that the second temperature is greater than or equal to the first threshold and less than or equal to the second threshold, step 517 is performed.

In step 517, the temperature sensor to-be-detected 21 is determined to be normal.

In step 518, the temperature sensor to-be-detected 21 is determined to be out of order.

In step 519, a third temperature is obtained.

The third temperature may be obtained according to a second current temperature detected by the temperature sensor to-be-detected 21 in a case where the compressor 30 is in the standby state. Step 520 is performed after step 519.

In step 520, whether the third temperature is less than the first threshold or greater than the second threshold is determined.

If it is determined that the third temperature is less than the first threshold or greater than the second threshold, step 518 is performed. If it is determined that the third temperature is greater than or equal to the first threshold and less than or equal to the second threshold, step 517 is performed.

In some embodiments, the plurality of temperature sensors 20 further include a second temperature sensor 23 and a third temperature sensor 24. The temperature sensor to-be-detected 21 may be any one of the first temperature sensor 22, the second temperature sensor 23, or the third temperature sensor 24. The first temperature sensor 22 includes a first temperature sub-sensor 221 and a second temperature sub-sensor 222. The second temperature sensor 23 includes a third temperature sub-sensor 231 and a fourth temperature sub-sensor 232.

FIG. 6 is a flow chart of yet another control method of an air conditioner, in accordance with some embodiments. Referring to FIG. 1, the air conditioner may be the air conditioner 1 in any of the embodiments. The air conditioner 1 includes a compressor 30, a plurality of temperature sensors 20, a temperature sensor to-be-detected 21, and a controller 10. The plurality of temperature sensors 20 include a first temperature sensor 22, and the temperature sensor to-be-detected 21 is any one of the plurality of temperature sensors 20.

As shown in FIG. 6, the control method of the air conditioner includes step 611 to step 621.

In step 611, an operating state of the compressor 30 is obtained.

In step 612, whether the compressor 30 is in a running state is determined.

If the compressor 30 is in the running state, step 613 is performed. If the compressor 30 is not in the running state (that is, the compressor 30 is in a standby state), step 620 is performed.

In step 613, a first temperature is obtained.

Step 613 is similar to the step 411 in the embodiments, and the details will not be repeated herein.

In step 614, whether the first temperature is greater than or equal to a preset reference temperature is determined.

If the first temperature is less than the preset reference temperature, step 615 is performed. If the first temperature is greater than or equal to the preset reference temperature, step 616 is performed.

In step 615, whether operating time of the compressor 30 is greater than or equal to preset time is determined.

The operating time is time of the compressor 30 operating from an end moment of the standby state before the running state to a current moment of the running state.

If the operating time of the compressor 30 is greater than or equal to the preset time, step 616 is performed. If the operating time of the compressor 30 is less than the preset time, step 614 is performed. It will be noted that in a case where the operating time of the compressor 30 is less than the preset time, step 618 may also be performed.

In step 616, a second temperature is obtained.

Step 616 is similar to the step 412 in the embodiments, and the details will not be repeated herein.

In step 617, whether the second temperature is less than a first threshold or greater than a second threshold is determined.

If the second temperature is less than the first threshold or greater than the second threshold, step 619 is performed. If the second temperature is greater than or equal to the first threshold and less than or equal to the second threshold, step 618 is performed.

In step 618, the temperature sensor to-be-detected 21 is determined to be normal.

In step 619, the temperature sensor to-be-detected 21 is determined to be out of order.

In step 620, a third temperature is obtained.

In step 621, whether the third temperature is less than the first threshold or greater than the second threshold is determined.

If it is determined that the third temperature is less than the first threshold or greater than the second threshold, step 619 is performed. If the third temperature is greater than or equal to the first threshold and less than or equal to the second threshold, step 618 is performed.

FIG. 7 is a flow chart of yet another control method of an air conditioner, in accordance with some embodiments. Referring to FIG. 1, the air conditioner may be the air conditioner 1 in any of the embodiments. The air conditioner 1 includes a compressor 30, a plurality of temperature sensors 20, a temperature sensor to-be-detected 21, and a controller 10. The plurality of temperature sensors 20 include a first temperature sensor 22, and the temperature sensor to-be-detected 21 is any one of the plurality of temperature sensors 20.

As shown in FIG. 7, the control method of the air conditioner includes step 711 to step 720.

In step 711, an operating state of the compressor 30 is obtained.

In step 712, whether the compressor 30 is in a running state is determined.

If the compressor 30 is in the running state, step 713 is performed. If the compressor 30 is in a standby state, step 713 is also performed.

In step 713, a first temperature is obtained.

In a case where the compressor 30 is in the running state, the first temperature is obtained according to an ambient temperature in the standby state of the compressor 30 before the running state. In a case where the compressor 30 is in the standby state, the first temperature is obtained according to the current ambient temperature.

In step 714, whether the first temperature is greater than or equal to a preset reference temperature is determined.

If the first temperature is less than the preset reference temperature, step 717 is performed. If the first temperature is greater than or equal to the preset reference temperature, and the compressor 30 is in the running state, step 715 is performed. If the first temperature is greater than or equal to the preset reference temperature, and the compressor 30 is in the standby state, step 719 is performed.

In step 715, a second temperature is obtained.

In step 716, whether the second temperature is less than a first threshold or greater than a second threshold is determined.

If it is determined that the second temperature is less than the first threshold or greater than the second threshold, step 718 is performed. If it is determined that the second temperature is greater than or equal to the first threshold and less than or equal to the second threshold, step 717 is performed.

In step 717, the temperature sensor to-be-detected 21 is determined to be normal.

In step 718, the temperature sensor to-be-detected 21 is determined to be out of order.

In step 719, a third temperature is obtained.

In step 720, whether the third temperature is less than the first threshold or greater than the second threshold is determined.

If it is determined that the third temperature is less than the first threshold or greater than the second threshold, step 718 is performed. If it is determined that the third temperature is greater than or equal to the first threshold and less than or equal to the second threshold, step 717 is performed.

In some embodiments, the plurality of temperature sensors 20 further include a third temperature sensor 24, and the temperature sensor to-be-detected 21 may be the third temperature sensor 24.

The beneficial effect of the control method of the air conditioner is similar to that of the air conditioner in some embodiments described above, and details will not be repeated herein.

It will be noted that the steps described in a specific order in the drawings of some embodiments of the present disclosure do not require or imply that these steps must be performed in such specific order or that all the steps shown must be performed to achieve the desired results. Each step in the drawings may be appended, some steps may be omitted, multiple steps may be combined into one step for execution, or one step may be decomposed into multiple steps for execution, etc.

In the above description of the embodiments, specific features, structures, materials, or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

A person skilled in the art will understand that the scope of disclosure in the present disclosure is not limited to specific embodiments discussed above and may modify and substitute some elements of the embodiments without departing from the spirits of the present disclosure. The scope of the present disclosure is limited by the appended claims.

Claims

1. An air conditioner, comprising:

an outdoor unit including a compressor;
an indoor unit connected to the outdoor unit to provide a refrigerant cycle;
a plurality of temperature sensors including a first temperature sensor, and the first temperature sensor being configured to detect an ambient temperature in a case where the compressor is in a standby state;
a temperature sensor to-be-detected being any one of the plurality of temperature sensors and configured to detect a first current temperature of a corresponding region in a case where the compressor is in a running state; wherein the temperature sensor to-be-detected has an allowable measurement interval, the allowable measurement interval includes a first threshold and a second threshold, and the first threshold is less than the second threshold; and
a controller coupled with the plurality of temperature sensors and the compressor, and the controller being configured to:
obtain a first temperature, the first temperature being obtained according to the ambient temperature;
obtain a second temperature, the second temperature being obtained according to the first current temperature;
in a case where the compressor is in the running state,
determine that the temperature sensor to-be-detected is out of order if the first temperature is greater than or equal to a preset reference temperature and the second temperature is less than the first threshold or greater than the second threshold; and
determine that the temperature sensor to-be-detected is normal if the first temperature is greater than or equal to the preset reference temperature and the second temperature is greater than or equal to the first threshold and less than or equal to the second threshold.

2. The air conditioner according to claim 1, wherein the controller is further configured to:

obtain an operating time of the compressor; wherein the operating time is a time of the compressor operating from an end moment of the standby state before the running state to a current moment of the running state; and
determine that the temperature sensor to-be-detected is out of order if the first temperature is less than the preset reference temperature, the operating time is greater than or equal to a preset time, and the second temperature is less than the first threshold or greater than the second threshold, in a case where the compressor is in the running state.

3. The air conditioner according to claim 2, wherein the temperature sensor to-be-detected is further configured to detect a second current temperature of the corresponding region in a case where the compressor is in the standby state; the controller is further configured to:

obtain a third temperature, the third temperature being obtained according to the second current temperature;
in a case where the compressor is in the standby state,
determine that the temperature sensor to-be-detected is out of order if the third temperature is less than the first threshold or greater than the second threshold; and
determine that the temperature sensor to-be-detected is normal if the third temperature is greater than or equal to the first threshold and less than or equal to the second threshold.

4. The air conditioner according to claim 3, wherein the controller is further configured to:

determine that the temperature sensor to-be-detected is out of order if the first temperature is greater than or equal to the preset reference temperature, and the third temperature is less than the first threshold or greater than the second threshold, in a case where the compressor is in the standby state.

5. The air conditioner according to claim 2, wherein the controller is further configured to:

determine that the temperature sensor to-be-detected is normal if the operating time of the compressor is less than the preset time.

6. The air conditioner according to claim 1, wherein the temperature sensor to-be-detected is further configured to detect a second current temperature of the corresponding region in a case where the compressor is in the standby state; the controller is further configured to:

obtain a third temperature, the third temperature being obtained according to the second current temperature;
in a case where the compressor is in the standby state,
determine that the temperature sensor to-be-detected is out of order if the third temperature is less than the first threshold or greater than the second threshold; and
determine that the temperature sensor to-be-detected is normal if the third temperature is greater than or equal to the first threshold and less than or equal to the second threshold.

7. The air conditioner according to claim 6, wherein the controller is further configured to:

determine that the temperature sensor to-be-detected is out of order if the first temperature is greater than or equal to the preset reference temperature and the third temperature is less than the first threshold or greater than the second threshold, in a case where the compressor is in the standby state.

8. The air conditioner according to claim 6, wherein the controller is further configured to:

obtain the first temperature by performing analog-to-digital conversion on the ambient temperature;
obtain the second temperature by performing analog-to-digital conversion on the first current temperature; and
obtain the third temperature by performing analog-to-digital conversion on the second current temperature.

9. The air conditioner according to claim 1, wherein the first temperature sensor satisfies at least one of following:

the first temperature sensor is configured to detect the ambient temperature in the standby state of the compressor before the running state in a case where the compressor is in the running state; or
the first temperature sensor is configured to detect the current ambient temperature in a case where the compressor is in the standby state.

10. The air conditioner according to claim 1, wherein the indoor unit includes a first heat exchanger, and the outdoor unit further includes a second heat exchanger; the plurality of temperature sensors further include a second temperature sensor and a third temperature sensor, and the temperature sensor to-be-detected is any one of the first temperature sensor, the second temperature sensor, or the third temperature sensor;

the first temperature sensor includes: a first temperature sub-sensor configured to detect a temperature of an indoor environment; and a second temperature sub-sensor configured to detect a temperature of an outdoor environment;
the second temperature sensor includes: a third temperature sub-sensor configured to detect a temperature of a coil of the first heat exchanger; and a fourth temperature sub-sensor configured to detect a temperature of a coil of the second heat exchanger; and
the third temperature sensor is configured to detect an exhaust temperature of the compressor.

11. A control method of an air conditioner, the air conditioner including:

an outdoor unit including a compressor;
an indoor unit connected to the outdoor unit to provide a refrigerant cycle;
a plurality of temperature sensors including a first temperature sensor, and the first temperature sensor being configured to detect an ambient temperature in a case where the compressor is in a standby state;
a temperature sensor to-be-detected being any one of the plurality of temperature sensors and configured to detect a first current temperature of a corresponding region in a case where the compressor is in a running state, wherein the temperature sensor to-be-detected has an allowable measurement interval, the allowable measurement interval includes a first threshold and a second threshold, and the first threshold is less than the second threshold; and
a controller coupled with the plurality of temperature sensors and the compressor;
wherein the method further comprises:
obtaining a first temperature, the first temperature being obtained according to the ambient temperature;
obtaining a second temperature, the second temperature being obtained according to the first current temperature;
in a case where the compressor is in the running state,
determining that the temperature sensor to-be-detected is out of order if the first temperature is greater than or equal to a preset reference temperature and the second temperature is less than the first threshold or greater than the second threshold; and
determining that the temperature sensor to-be-detected is normal if the first temperature is greater than or equal to the preset reference temperature and the second temperature is greater than or equal to the first threshold and less than or equal to the second threshold.

12. The method according to claim 11, further comprising:

obtaining an operating time of the compressor; wherein the operating time is a time of the compressor operating from an end moment of the standby state before the running state to a current moment of the running state; and
determining that the temperature sensor to-be-detected is out of order if the first temperature is less than the preset reference temperature, the operating time is greater than or equal to a preset time, and the second temperature is less than the first threshold or greater than the second threshold, in a case where the compressor is in the running state.

13. The method according to claim 12, wherein the temperature sensor to-be-detected is further configured to detect a second current temperature of the corresponding region in a case where the compressor is in the standby state; the method further comprises:

obtaining a third temperature, the third temperature being obtained according to the second current temperature;
in a case where the compressor is in the standby state,
determining that the temperature sensor to-be-detected is out of order if the third temperature is less than the first threshold or greater than the second threshold; and
determining that the temperature sensor to-be-detected is normal if the third temperature is greater than or equal to the first threshold and less than or equal to the second threshold.

14. The method according to claim 13, further comprising:

determining that the temperature sensor to-be-detected is out of order if the first temperature is greater than or equal to the preset reference temperature and the third temperature is less than the first threshold or greater than the second threshold, in a case where the compressor is in the standby state.

15. The method according to claim 12, further comprising:

determining that the temperature sensor to-be-detected is normal if the operating time of the compressor is less than the preset time.

16. The method according to claim 11, wherein the temperature sensor to-be-detected is further configured to detect a second current temperature of the corresponding region in a case where the compressor is in the standby state; the method further comprises:

obtaining a third temperature, the third temperature being obtained according to the second current temperature;
in a case where the compressor is in the standby state,
determining that the temperature sensor to-be-detected is out of order if the third temperature is less than the first threshold or greater than the second threshold; and
determining that the temperature sensor to-be-detected is normal if the third temperature is greater than or equal to the first threshold and less than or equal to the second threshold.

17. The method according to claim 16, further comprising:

determining that the temperature sensor to-be-detected is out of order if the first temperature is greater than or equal to the preset reference temperature and the third temperature is less than the first threshold or greater than the second threshold, in a case where the compressor is in the standby state.

18. The method according to claim 16, further comprising:

obtaining the first temperature by performing analog-to-digital conversion on the ambient temperature;
obtaining the second temperature by performing analog-to-digital conversion on the first current temperature; and
obtaining the third temperature by performing analog-to-digital conversion on the second current temperature.

19. The method according to claim 11, wherein the first temperature sensor satisfies at least one of following:

the first temperature sensor is configured to detect the ambient temperature in the standby state of the compressor before the running state in a case where the compressor is in the running state; or
the first temperature sensor is configured to detect the current ambient temperature in a case where the compressor is in the standby state.

20. The method according to claim 11, wherein the indoor unit includes a first heat exchanger, and the outdoor unit further includes a second heat exchanger; the plurality of temperature sensors further includes a second temperature sensor and a third temperature sensor, the temperature sensor to-be-detected is any one of the first temperature sensor, the second temperature sensor, or the third temperature sensor;

the first temperature sensor includes: a first temperature sub-sensor configured to detect a temperature of an indoor environment; and a second temperature sub-sensor configured to detect a temperature of an outdoor environment;
the second temperature sensor includes: a third temperature sub-sensor configured to detect a temperature of a coil of the first heat exchanger; and a fourth temperature sub-sensor configured to detect a temperature of a coil of the second heat exchanger; and
the third temperature sensor is configured to detect an exhaust temperature of the compressor.
Patent History
Publication number: 20240219055
Type: Application
Filed: Mar 15, 2024
Publication Date: Jul 4, 2024
Applicant: HISENSE (GUANGDONG) AIR CONDITIONING CO., LTD. (Jiangmen)
Inventors: Xinmin WANG (Jiangmen), Qi PENG (Jiangmen), Minan WU (Jiangmen)
Application Number: 18/607,147
Classifications
International Classification: F24F 11/63 (20060101);