Abstract: A control method for an air conditioner comprising a compressor and an outdoor unit, wherein the control method includes: obtaining a suction temperature of the outdoor unit; and selectively adjusting the frequency of the compressor according to the suction temperature of the outdoor unit.

Abstract: The application discloses a method for managing food in a refrigerator, including the steps of recognizing the type and quantity of the food placed in the refrigerator according to an image shot by an external camera of the refrigerator; determining a position of the food placed in the refrigerator according to images shot by internal cameras of the refrigerator; generating an AR label for recording information of the food with regard to the food placed in the refrigerator; displaying the AR label of the inquired food after receiving a food query request from a user; wherein the information of the food at least includes the type, quantity and position of the food; and displaying the images shot by the internal cameras in real time after receiving an image viewing request from the user. With the adoption of the application, the food in the refrigerator can be managed more efficiently.

Abstract: A refrigerating cycle device includes a compressor, a motor, and a wiring switch part. The compressor compresses a refrigerant. The motor generates power for compressing the refrigerant by rotating a rotor with voltage applied to a plurality of wirings. The motor is disposed in the compressor. The wiring switch part switches between a plurality of wiring states by changing connection between the plurality of wirings. When a rotational speed of the rotor exceeds a predetermined value, the wiring switch part switches to a first wiring state of the plurality of wiring states. The first wiring state differs from a second wiring state of the plurality of wiring state. Efficiency of the second wiring state is highest at the rotational speed.

Abstract: Custom cooling strategies may be implemented for different regions in computers, servers, and other information handling systems. Chassis architecture may have multiple cooling fans, with each fan cooling a different region via dedicated duct work. A user or administrator may thus implement different cooling strategies for internal components, based on different thermal curves defined for each different region.

Abstract: A cooled system includes an enclosure having an outer surface and an inner surface comprising a cooled enclosed area, multiple cable brackets thermally coupled to the outer surface of the enclosure, each cable bracket including a first surface conforming to the outer surface of the enclosure and an opening therethrough sized to hold a cable and conduct heat from the cable to the outer surface of the enclosure.

Abstract: A method of operating a heat exchanger system in which a compressor, which is drivable by a motor, is fluidly interposed between an evaporator and a condenser following receipt of a shutdown command is provided. The method includes positioning inlet guide vanes (IGVs) of the compressor in a first position in the event of at least one of a first precondition being in effect and the first and a second precondition both not being in effect. The method further includes positioning the IGVs in a second position in an event the first precondition is not in effect but the second precondition is in effect, ramping a speed of the compressor down until a third precondition takes effect, removing power from the motor and positioning the IGVs in the first position once power is removed from the motor.

Abstract: A refrigerator for providing an item guide service using artificial intelligence includes an output unit, a sensing unit configured to acquire user identification information for identifying a user, a memory configured to store a collaborative filtering model for determining an item to be used by the user, and a processor configured to recognize the user based on the acquired user identification information, predict an item to be used by the recognized user using the collaborative filtering model and output item identification information for identifying the predicted item through the output unit.

Abstract: A refrigerant charging device and a refrigerant charging system include a refrigerant charging flour path having a refrigerant charging port connected to a refrigerant flow path of an air conditioner, a valve provided at the refrigerant charging flow path, and a control device configured to control the valve. The control device includes a discharging superheat calculator configured to calculate the discharging superheat degree from a refrigerant temperature and a refrigerant pressure at a discharge side of a compressor, and a valve controller configured to control the opening and closing state of the valve based on the calculated discharging superheat degree calculated by the discharge super-heat calculator.

Abstract: An air conditioner including an outdoor unit having a compressor, an outdoor heat exchanger, a main expansion device, and a refrigerant pipe configured to connect the outdoor heat exchanger to the main expansion device; an indoor unit having an indoor heat exchanger; and a connection pipe configured to connect the outdoor unit to the indoor unit, wherein the air conditioner has refrigeration capacity of 2 kW to 7 kW, a R134a is used as the refrigerant, the refrigerant pipe is made of a ductile stainless steel material having a delta ferrite matrix structure of 1% or less on the basis of a grain area, and the refrigerant pipe includes a suction pipe that guides suction of a refrigerant into the compressor and has an outer diameter of 12.70 mm.

Abstract: The thermostatic cartridge includes: a cartridge body, inside which are delimited a chamber, a hot and cold fluid inlet passages and a mixed fluid outlet passage; a slide valve regulating the temperature of the mixed fluid, movable along an axis to close, in inverse proportions, the inlet passages; a thermostatic element, a mechanism for adjusting a thermostatic regulation temperature, which is, in a usage configuration, mechanically connected to the body to set, and by actuation, to modify the position of the piston of the thermostatic element along the axis; and a control member rotationally mounted on the body so as to, in the usage configuration, actuate it when the control member is rotationally driven in between positions associated with extreme low and high values of the thermostatic regulation temperature. When the control member is driven past a first position, the adjustment mechanism is disconnected from the body or control member.

Abstract: An HVAC system includes a compressor, condenser, and evaporator. A sensor measures a value associated with the refrigerant in the condenser or the evaporator, and a controller is communicatively coupled to the compressor and the sensor. The controller determines, based on an operational history the compressor, that pre-requisite criteria are satisfied for entering a sensor validation mode. After determining the pre-requisite criteria are satisfied, an initial sensor measurement value is determined. Following determining the initial sensor measurement value, the compressor is operated according to a sensor-validation mode. Following operating the compressor according to the sensor-validation mode for at least a minimum time, a current sensor measurement value is determined. The controller determines whether validation criteria are satisfied for the current sensor value. In response to determining that the validation criteria are satisfied, the controller determines that the sensor is validated.

Abstract: A dryer stand including a side cover having a through hole through which air is introduced and discharged, a seat provided above the side cover and allowing a dryer to be positioned thereon and an air purifier disposed in an inner space defined by the side cover, wherein the air purifier includes a fan for generating an air flow, and a filter disposed in a flow path of air flowing by the fan to dry a target object.

Abstract: An outdoor unit includes at least one heat exchanger, a first motor including a first fan, a second motor including a second fan, an inverter that applies voltage to the first motor and the second for respectively, a connection switching unit that switches the voltage applied to the second motor between on and off, and a control unit that controls the inverter and the connection switching unit. The inverter is disposed closer to the first motor than to the second motor.

Abstract: A thermostatic valve including a closed hollow body, a first opening and a second opening in the body, a stopper separating the first opening from the second opening, a thermostatic actuator capable of opening the stopper and a biasing member capable of closing the stopper, wherein the stopper includes a movable cage capable of sliding in relation to a fixed cage along an axis substantially coinciding with the axis of the thermostatic actuator, the movable cage or the fixed cage having at least one port, and the relative movement of the movable cage in relation to the fixed cage allowing the at least one port (8, 80) to be selectively closed or opened, and in that the movable cage is made of plastics.

Abstract: A gas heat pump system including an outdoor unit having a compressor, an outdoor heat exchanger, and an expansion device; an indoor unit having an indoor heat exchanger; a refrigerant pipe to connect the outdoor unit and the indoor unit; an engine to combust mixed fuel in which fuel and air are mixed; a coolant tank to store a coolant; a radiator to emit, to an outside, heat which is transferred from the engine to the coolant; and a coolant pipe to connect the coolant tank and the radiator to allow the coolant to circulate therethrough, whereby the gas heat pump system has a cooling capability between 71 kW and 85 kW, the refrigerant is a mixed refrigerant having at least 50% R32, and the refrigerant pipe is a ductile stainless steel pipe having a delta ferrite matrix structure of 1% or less based on grain area.

Abstract: A refrigerator and a method for controlling the same are disclosed. The refrigerator may minimize the size and material cost of the control system by controlling the internal temperature and the speed of a compressor using a thermostat used in the conventional low-capacity/low-cost refrigerator without using a system controller equipped with various sensors (internal sensors and/or external sensors) capable of controlling the internal temperature. In addition, since an inverter controller capable of controlling a BLDC compressor estimates the internal/external temperature based on operation information of the compressor, and determines the internal load, it may save energy and reduce vibrations and noise, which are the largest disadvantages of a constant-speed compressor, thereby improving satisfaction of the consumer. In addition, the BLDC compressor may be started and operated stably by applying a differentiated algorithm of the inverter controller.

Abstract: A blower for an HVAC system, the blower includes a housing with an intake and an outlet, a fan or blower wheel disposed within the housing and configured to draw air into the housing via the intake and to exhaust air from the housing through the outlet, and an adjustable cutoff plate configured to be moved between at least a first position defining a first cutoff angle and a second position defining a second cutoff angle.

Abstract: Excessive specifications of a shutoff valve leads to increase in production cost. An air conditioner configured to circulate a lower flammability refrigerant in a refrigerant circuit includes a first shutoff valve and a second shutoff valve configured to inhibit refrigerant leakage into a predetermined space. Each of the first shutoff valve and the second shutoff valve in a shutoff state has a shutoff leakage rate, as an air leakage rate in a case where fluid is air at 20° C. and a differential pressure between upstream and downstream of the valve is 1 MPa, more than 300 (cm3/min) and less than 300×R (cm3/min). R satisfies R = ( ? md × V md × A d ) ? / ? ( C r × ( 2 × ? ? ? P r ? / ? ? 1 ? rl ) 0.5 × A v × ? 1 ? rl + A v × ( 2 ? / ? ( ? + 1 ) ) ( ( ? + 1 ) ? / ? 2 ? ( ? - 1 ) ) × ( ? × P 1 ? r × ? 1 ? rg ) 0.5 ) .

Abstract: Discussed is an air conditioner disposed in an indoor space. The air conditioner includes a sensor, a memory configured to store a plurality of learning results respectively corresponding to a plurality of members, and a processor configured to identify at least one member that is present in the indoor space among the plurality of members by using data acquired by the sensor, control operation of at least one of a compressor, a fan motor, or a vane motor based on the learning result corresponding to an identified member so as to adjust a set value including at least one of a set temperature, an air volume, or a wind direction, and update the learning results by using feedback on the adjusted set value.

Abstract: A method of operating a chiller having a closed refrigerant loop including a compressor, a condenser and an evaporator. The refrigerant used in the loop defining a pressure-enthalpy curve representative of different phases (vapor, liquid and vapor, and liquid) of the refrigerant at different combinations of pressure and enthalpy. The loop defining a process cycle (compression, condensation, expansion, and evaporation) of the refrigerant during operation of the loop relative to the pressure-enthalpy curve of the refrigerant. The method including continuously operating the compressor when a segment of the process cycle corresponds to the refrigerant being in the liquid phase.