Abstract: A thermal cycling system includes a structure defining a load space, a heating assembly positioned to heat to the load space, and a cooling assembly positioned to cool the load space. The cooling assembly includes a refrigeration circuit and a banking circuit. The refrigeration circuit has a compressor, a refrigeration condenser, a first refrigeration evaporator in direct thermal communication with the load space, a second refrigeration evaporator in parallel with the first evaporator, and primary refrigerant circulating throughout the refrigeration circuit. The banking circuit is gravity fed and includes a banking condenser, a banking evaporator positioned to cool the load space, and a banking refrigerant circulating throughout the banking circuit. The banking condenser includes a collection reservoir to store liquid banking refrigerant and is in thermal communication with the second refrigeration evaporator.

Abstract: A method for the air conditioning of a vehicle interior as a function of incident solar radiation. In a vehicle with, for example, a four-zone air conditioning system, the incident solar radiation is detected by means of sensor elements assigned to the various air conditioning zones in the vehicle and is used for regulating the air conditioning capacity. In order to avoid faulty regulation due to a detected incident solar radiation which does not influence or only slightly influences the passengers because of perpendicular incident radiation, for example, on the roof, the hood and the trunk lid, the incident radiation direction is determined by means of the sensor elements and the regulation of the air conditioning capacity is adapted correspondingly, so that the situation of too intensive cooling, for example in the case of perpendicular radiation on the vehicle roof, is avoided.

Abstract: A fan controller reduces the percentage of time that fans used in a heat exchanger of an outdoor cabinet that houses electronics and power source must operate to provide required cooling to the electronics and power source. The fan controller can also reverse operation of a fan of the heat controller to help reduce clogging of air intakes as well as to clean the interior of the cabinet. In an embodiment, the controller operates the fans in the heat exchanger according to operating temperature ranges. Thermostats can be used to provide the operating temperature ranges. Depending on the state of the thermostats and the ambient temperature, the fan controller causes one fan to operate in the reverse direction while the other fan is idle, causes one fan to operate in the forward direction while the other fan is idle, or causes both fans to operate in the forward direction.

Abstract: A method for controlling a multi-unit air conditioner is disclosed which is capable of preventing frost from being formed on the outer surface of a refrigerant line. In order to control an air conditioner including an outdoor unit, a plurality of indoor units corresponding to the out door unit, and a plurality of refrigerant lines for connecting the indoor units to the outdoor unit, respectively, the method includes the steps of measuring respective states of the refrigerant lines using a measurement sensor, determining respective states of the refrigerant lines, based on measurement data obtained by the measurement sensor, and controlling an operation state of an operating one or operating ones of the indoor units, in accordance with the determined state of the refrigerant line associated with the operating indoor unit or each operating indoor unit.

Abstract: According to some embodiments, a method, system, and apparatus to provide thermal management control. In some embodiments, the method includes receiving, by a control mechanism, a plurality of temperature representative signals from a plurality of temperature sensors, receiving a command signal from the control mechanism by an output weighting matrix mechanism, and controlling at least one thermal cooling device with at least one weighted output signal from the output weighting matrix mechanism.

Abstract: A cooling system for a heat producing system includes a heat exchanger in fluid communication with the heat producing system. The heat exchanger is configured to receive a temperature control fluid therethrough. A first fan is operable in a first rotational direction to move air through the heat exchanger in a first direction. A second fan is disposed radially adjacent to the first fan, and is operable in a second rotational direction opposite the first rotational direction to move air through the heat exchanger in the first direction. A control system, including at least one controller, is provided for controlling operation of the fans.

Abstract: A refrigerator comprises a main cabinet formed with a storage compartment, a partition which partitions the storage compartment into a first storage compartment, a second storage compartment, a multipurpose compartment; a first evaporator provided to the main cabinet to generate cool air supplied to the first storage compartment; a second evaporator which is provided to the main cabinet to generate the cool air supplied to the second storage compartment; a first sub cool air duct which guides the cool air generated from the first evaporator to the multipurpose compartment; a second sub cool air duct which guides the cool air generated from the second evaporator to the multipurpose compartment; and at least one sub cool air supplying apparatus provided to the first sub cool air duct and the second sub cool air duct to supply the cool air from the first evaporator and the second evaporator to the multipurpose compartment.

Abstract: A substrate processing system comprises a plurality of CVD processing units (15a-15c) and one refrigerator (101). A supply line (102) for supplying a cooling medium from the refrigerator to the CVD processing units, and a feedback line (103) for feeding the cooling medium back to the refrigerator from the processing units are laid in the system. The cooling medium from the refrigerator is thus distributively fed to the processing units. Circuits (104a-104c) are laid out in rod stages (33), objects of temperature control, in the respective processing units. Each circuit is connected to the supply line and to the feedback line. The cooling medium is circulated around the circuits to control the temperatures of the rod stages stably. When the temperature of the rod stage rises, the cooling medium at a low temperature is taken in the circuit from the supply line to cool the rod stage.

Abstract: A self-contained air conditioner unit incorporates an energy recovery ventilator portion that brings about several changes of room air per hour with outdoor fresh air. There is an outdoor air intake plenum which furnishes the fresh air and the condenser air for the condenser coil, and a return air plenum. Air from the room return air plenum is HEPA filtered and conducted to the evaporator coil and evaporator fan, and is supplied back into the conditioned space. The energy recovery ventilator has a counterflow heat exchanger core situated between the return air plenum and the fresh air intake plenum, as well as two ventilation fans, one (or both) of which may be of variable or multiple speed. By controlling the fan speeds, it is possible to produce a neutral pressure, a positive or overpressure, or a negative or underpressure in the conditioned space. The unit can be wheeled into place and installed easily by personnel without special training.

Abstract: An air conditioner for a vehicle includes an air conditioning unit for generating a conditioned air, an air-blowing outlet portion for blowing the conditioned air toward a target portion of a passenger in a passenger compartment of the vehicle, and a control unit adapted to conduct a cool-down control. The target portion includes a face area, a seat-contact portion and a hand area of the passenger, the seat-contact portion contacting a seat of the vehicle. The cool-down control includes a first blowing operation for blowing the conditioned air from the air-blowing outlet portion toward the face area, a second blowing operation for blowing the conditioned air from the air-blowing outlet portion toward the seat-contact portion and a third blowing operation for blowing the conditioned air from the air-blowing outlet portion toward the hand area. The first blowing operation, the second blowing operation and the third blowing operation successively begun.

Abstract: A cooling system for cooling a plurality of heat producing systems includes a heat exchanger having a plurality of cooling zones, each of which has a respective inlet and outlet for facilitating flow of a respective temperature control fluid therethrough. Each of the respective temperature control fluids facilitates temperature control of a respective heat producing system. A plurality of fans cool the temperature control fluids flowing through the heat exchanger, and a fan or fans are disposed proximate each zone of the heat exchanger to provide air flow substantially independently from the air flow over the other cooling zones.

Abstract: A refrigerator including a main body which has a plurality of storing compartments, a plurality of evaporators which are provided to correspond to the storing compartments respectively, a plurality of blowing fans which are provided to correspond to the evaporators respectively to supply cold air whose heat has been exchanged at the evaporators to the storing compartments, and a compressor and a condenser which are provided in the main body, the refrigerator further includes: a plurality of evaporator temperature sensors which sense temperature of each evaporator; and a controlling part which, if temperature of the evaporator sensed by the evaporator temperature sensor is lower than a defrosting temperature of the evaporator after the compressor stops operating, controls the blowing fan that corresponds to the evaporator having temperature lower than the defrosting temperature to be operated.

Abstract: A system for controlling multiple air conditioners. The system includes a demand control unit configured to divide the multiple air conditioners into groups, to assign a priority level to each group, to calculate an estimated power amount used by the multiple air conditioners based on an amount of power consumed by the multiple air conditioners during a predetermined time period, and to forcibly control an operation of one or more air conditioners included in a respective group based on the priority level assigned to the respective group.

Abstract: A safety shut-off device for sections of fluid circuits, which in case of damage or the like, have to shut off from each other on safety considerations. The safety shut-off device includes at least two valves connected to each other via a control chamber. A first pressure differential with the control chamber closes the valves and a second pressure differential, which is greater than the first, opens the valves.

Abstract: An air conditioner for a vehicle includes an air-conditioning unit for supplying conditioned air into a vehicle, an information acquiring unit for acquiring state information indicating a state of the vehicle, a control information modifying unit having at least one probabilistic model for calculating the probability that a passenger will perform a predetermined setting operation, calculating the probability by inputting the state information into the at least one probabilistic model, and modifying the setting information or the control information related to the predetermined setting operation according to the probability so that the predetermined setting operation is performed, and an air-conditioning control unit for controlling the air-conditioning unit according to the modified setting information or modified control information.

Abstract: A heating and ventilating and air conditioning system includes an evaporative cooler positioned upstream from an evaporator. The evaporative cooler defines a primary airstream and a secondary airstream flowing transversely to the primary airstream. The output temperature To of the primary airstream is maintained by controlling the mass flow rate ratio of the secondary airstream to the primary airstream. By controlling the mass flow rate ratio, cooler air from the primary airstream is provided to the evaporator, thereby improving the efficiency of the overall system.

Abstract: A refrigerator and a method for controlling the refrigerator including a plurality of storage chambers which is capable of reducing a continuous operation time of a compressor or frequent ON/OFF operations of the compressor of the refrigerator, to thereby enhancing the operation efficiency of the compressor. When the control method is applied to a refrigerator including a compressor, a first storage chamber having a first fan to circulate cold air, and a second storage chamber having a second fan to circulate cold air, the second storage chamber having a load relatively lower than a load of the first storage chamber, the control method includes turning off the second fan, to turn off the compressor, when the first storage chamber is at a temperature satisfying a first predetermined temperature corresponding to an OFF condition of the first fan, such that the second fan is turned off even when the second storage chamber is at a temperature not satisfying a second predetermined temperature.

Abstract: A zone climate control system and method of its operation. A zone can be a single room. A method for determining which zones' vents are to be closed, and which are to be opened, in performing heating or cooling, circulation to heat or cool a zone by mixing its air with air from another zone, circulation to reduce excessive conditioning of a zone by mixing its air with air from another zone, or circulation to maintain air quality. Airflow, thermal capacity, heating or cooling requirements, and other parameters are developed for each zone by measurement and/or derivation. Plenum pressure is predicted and managed.

Abstract: In a conditioning system for a manufacturing machine, in particular a machine tool, a machine tool framework is arranged inside a sealed casing. Ducts are arranged at machine tool regions to be thermally conditioned. The ducts comprise air flow outlets and are coupled to a conditioned air delivery manifold supplied by a conditioning device. Solenoid valves are provided at the outlets to control air flow.

Abstract: An air conditioner is provided that can reduce the occurrence of situations in which the comfort level of an occupant of a room is degraded. The air conditioner is capable of running in cooling mode and/or dehumidifying mode and is provided with an air delivery unit, a flap, and a control unit. The air delivery unit delivers conditioned air into the room. The flap determines the discharge direction of the air delivered from the air delivery unit. The control unit executes a first control that changes the swing speed of the flap in accordance with the room temperature.

Abstract: A refrigerator, in which air blast fans in storage chambers are controlled so as to reduce a power consumption rate, and a control method of the refrigerator. The control method includes the steps of (a) determining whether or not a plurality of air blast devices, respectively connected to a plurality of storage chambers, and a compressor are respectively in starting conditions; (b) in case that it is determined that at least two air blast devices and the compressor are in the starting conditions, turning a part of the at least two air blast devices in the starting condition and the compressor on; and (c) turning all of the air blast devices in the starting condition on after a designated time from the turning-on of the air blast device elapses.

Abstract: An HVAC Integrated electronic Module (HIM) (41) for controlling airflow through an HVAC module (12), the HVAC module including a variable speed blower motor (18), a plurality of airflow doors (26–28) for controlling air direction and hot-cold air temperature blend, and electrical actuators, servo motors or stepper motors for said doors, the HIM including: one or more air temperature sensors (22) for measurement of one or more of intake air temperature, outlet air temperature, air-off evaporator temperature and engine coolant temperature; actuator control circuitry (31) for controlling said electrical actuators, servo motors or stepper motors; blower motor speed control circuitry (15) for speed control of the variable speed blower motor; sensor control circuitry for said sensors; and communication circuitry for a serial communication interface (42) to enable communication with a vehicle users interface (32).

Abstract: An electric fan system has a first electric blower 10, which utilizes a brushless motor, and a second electric blower, which utilizes a brushed motor, for distributing the cooling air to the radiator and the condenser. The system has an electronic engine control unit which activates only the first electric blower when it determines that the cooling water temperature is less than T2, and activates both the first and second electric blowers when it determines that the cooling water temperature is T2 or higher. The water temperature is based on a detection output from a cooling water temperature sensor. Thus, since the electric blower is not activated unless the cooling water temperature becomes T2 or higher, use of the brushed motor is limited and its life is increased.

Abstract: A cooling device for an electric machine with thermal zones having interactions with one another is proposed, each of the thermal zones containing a heat source and a temperature sensor, and at least one cooling means, a controlling element connected to the temperature sensor being allocated to each thermal zone for activation of the at least one cooling means. The cooling device is characterized by the fact that outputs of a plurality of controlling elements can be connected to the at least one cooling means. In an inventive cooling device, a plurality of controlling elements can act on one or more cooling means, whereby cooling means are supported or completely replaced by other existing cooling means.

Abstract: A vehicle air conditioner has a front air conditioning unit for front seats of a vehicle and a rear air conditioning unit for rear seats of the vehicle. The front and rear air conditioning units are controlled by an air conditioning ECU. The ECU uses a non-linear model, such as a neural network, to determine a target blowout temperature, a blower voltage, and blowout port modes of the front air conditioning unit. The ECU uses a linear model to determine a target blowout temperature, a blower voltage, and blowout port modes of the rear air conditioning unit.

Abstract: A method and an apparatus for providing make-up water for a chilled water system. A first water tower for cooling water is provided. Condensate water from a condensate water source is extracted. Make-up water for the first water tower is provided using the condensate water. The apparatus comprises a first water tower for generating cooling water; an air compressor to produce compressed air; a condensate water source to extract condensate water from the compressed air; and a water flow control system for providing water from the condensate water source to the first water tower.

Abstract: A vehicle air conditioner is controlled to directly lower the temperature of the interior equipment before a driver enters a vehicle, using an airflow from an air outlet. The air outlet can be placed on and/or against the interior equipment. The interior equipment can be an instrument panel, a steering wheel or a seat.

Abstract: The temperature of air discharged from first and second passages are adjusted by adjusting the proportion of a flow rate of cold air with respect to that of hot air by means of a first cold air door 26 and a first hot air door 24, and by means of a second cold air door 27 and a second hot air door 25. Discharged air flow rates are controlled by changing the areas of the first and second passages while the proportion of the flow rate of cold air with respect to that of hot air is maintained to be constant by means of the first cold air door 26 and the first hot air door 24, and by means of the second cold air door 27 and the second hot air door 25.

Abstract: A user-programmable monitoring and dispensing system for controlling the dispensing of water vapor and various other media into an HVAC air stream in residential or commercial structures. The various media to be dispensed are preferably water-soluble, and mixed with the system water supply to be dispensed with the water vapor added to the HVAC air stream. These materials may be fragrances or aromas, intended to produce an aesthetic effect, or they can be agents capable of pesticidal, bacteriacidal, fungicidal or sporacidal effect for use as acute or prophylactic treatment for infestation. The dispensing system central processor is pre-programmed with a default concentration algorithm for each media to be dispensed. The concentration of media in aqueous solution is initially controlled by this default algorithm at each of several concentration levels, from lowest to highest.

Abstract: A commercial refrigeration system including a compressor, a condenser, a valve, and an evaporator coil, all of which are in fluid communication. The refrigeration system further including a fixture adapted to be cooled by the evaporator coil, a system controller operable to control operation of the refrigeration system, and a subsystem controller in communication with the system controller. The subsystem controller being operable to monitor at least one parameter of a subsystem having at least one of the compressor, condenser, valve, and fixture, and being further operable to execute a command from the system controller to affect the operation of the subsystem.

Abstract: A method for automatically controlling an air conditioning device includes determining vehicle interior and exterior temperatures, and supplying a mixture of fresh air and circulating air to the air conditioning device in a hot start when the interior temperature exceeds the exterior temperature. An air conditioning device for a motor vehicle includes a hot start mode and a normal mode. In the hot start mode when the vehicle interior temperature exceeds the vehicle exterior temperature, a mixture of fresh air and circulating air is supplied to the air conditioning device. The air conditioning device operates in the normal mode when the vehicle exterior temperature exceeds the vehicle interior temperature.

Abstract: A ventilation and air-conditioning system uses a first variable-air-volume system to cool and dehumidify fresh outside air and deliver it through a first duct to a mixing box located downstream. The system also uses a second variable-air-volume system to further cool and dehumidify recycled air and deliver it through a second duct to the mixing box where the fresh and recycled air are able to mix prior to ventilation into a room or office. The system uses a carbon dioxide sensor and a temperature sensor to provide feedback signals to a control system, which in turn regulates fan speeds and damper openings in order to provide optimal cooling and ventilation and to conserve energy when cooling and ventilation requirements are low.

Abstract: An apparatus and a method for controlling a concentrated cooling of a refrigerator for discharging cool air to a region where a load of high temperature is generated when the load is generated on a certain region in a cooling chamber due to receipt of food or opening of door comprises: a step of performing normal operation; a step of deciding whether the operating time reaches to a set time by counting the time; a step of blocking main discharge of cool air and detecting the load of high temperature by scanning, if it is decided that the set time is reached; and a step of rotating the nozzle to the region of the load and injecting cool air for a predetermined time, if the load of high temperature is detected in above step.

Abstract: An apparatus and a method for controlling a concentrated cooling of a refrigerator for discharging cool air to a region where a load of high temperature is generated when the load is generated on a certain region in a cooling chamber due to receipt of food or opening of door comprises: a step of performing normal operation; a step of deciding whether the operating time reaches to a set time by counting the time; a step of blocking main discharge of cool air and detecting the load of high temperature by scanning, if it is decided that the set time is reached; and a step of rotating the nozzle to the region of the load and injecting cool air for a predetermined time, if the load of high temperature is detected in above step.

Abstract: In a method for the control of the strength and the temperature of at least two temperature controlled air flows which serve for the temperature control of at least two corresponding regions of a space and which are generated by making available a cold air flow and a hot air flow whose temperatures can be controlled individually and/or whose strengths can be controlled individually or in combination, by forming in each case a cold air regional part flow and a hot air flow for each of the regions from the cold air flow and the hot air flow, by respective restriction or additional supply of the regional part flows by respectively corresponding, controllable restrictor devices or at least one additional supply device and mixing of corresponding regional part flows for the respective regions, a desired temperature and a desired strength of an air flow to be supplied to the region are set for each of the regions and the strength of the cold air flow and/or of the hot air flow and/or at least one of the restrictor

Abstract: The present invention provides a method and apparatus for efficiently using various components in combination as a system for cooling and cleaning air. The apparatus uses the combination of an evaporative cooler with a water reservoir and a refrigerated air system with a water-cooled condenser. A pump or series of pumps are used to supply water to the evaporative cooler and to the water-cooled condenser from the water reservoir. A mechanism for controlling the hardness of supplied water may also be included. After the reservoir water has been supplied to the other components in the system, it is returned to the water reservoir. During less humid Summer conditions, the output air from the evaporative cooler is supplied to a series of ducts and is used to cool the interior of a structure such as a home.

Abstract: A vehicle air conditioner control apparatus having a telecommunication cable communicating between a remote control and a drive control to facilitate system operation and construction. The apparatus includes an input part for enabling a driver to control operations of the air conditioner; the remote control part for transforming a manipulated signal of the input part to a transmission signal and sending same through a communication cable; the drive control part for generating and outputting a signal to drive the air conditioner correspondingly to the transmission signal received from the remote control part; a drive part for operating according to the drive signal output from the drive control part and performing a function to cool off the vehicle; and a compressor pressure switch for showing the input status of the compressor.

Abstract: A method for adjusting and maintaining a desired room climate with regards to temperature, humidity, and carbon dioxide concentration at a given charge of heat, humidity, and carbon dioxide. A proportionate amount of outer air is cooled to a saturation temperature and then dehumidified. The saturation temperature results from the intersecting point of the saturation curve of humid air, and a straight line which extends through the point of state of the air being in the state of the desired climate of the room air, and the point of state of the available outer air in an h,x diagram, i.e., provided with a rise of the quotient of the heat charge in relation to the humidity charge.

Abstract: A refrigerator has a cold storage and freezer zones with individual fans and evaporators, a switching valve that allows refrigerant to flow simultaneously through each zone or through only one of the zones and a control which when power is supplied causes simultaneous flow, starting the compressor and a condenser fan while driving the cold storage fan at a high speed and the freezing zone fan at a low speed until such time that a set point time has been exceeded or the temperature set points of the zones has been reached by cooling.

Abstract: A method and apparatus for controlling evaporator and condenser fans in a refrigeration system. The apparatus is a refrigeration system including a refrigerant circuit defined by a compressor, a condenser, a throttling device, and an evaporator. The apparatus includes an evaporator fan and a condenser fan. The apparatus also includes a controller coupled to the fans. The controller includes a variable frequency drive unit. For the method of the invention, the speed of the fans is controlled by the controller.

Abstract: A refrigerator crisper drawer based on an increased nitrogen concentration. This nitrogen concentration necessarily depletes the oxygen thus reducing the opportunities for food to oxidize or “brown.

Abstract: A user-programmable monitoring and dispensing system for controlling the dispensing of water vapor and various other media into an HVAC air stream in residential or commercial structures. The various media to be dispensed are preferably water-soluble, and mixed with the system water supply to be dispensed with the water vapor added to the HVAC air stream. These materials may be fragrances or aromas, intended to produce an aesthetic effect, or they can be agents capable of pesticidal, bacteriacidal, fungicidal or sporacidal effect for use as acute or prophylactic treatment for infestation.

Abstract: The invention relates to a vehicle air-conditioning device having at least one control element which supplies a prescribed value to the air-conditioning control unit, a state of flow being provided by an air speed and a degree of turbulence of the air, which can be influenced by the strength of the fan, distribution of air to the discharge nozzles, the discharge direction to the discharge nozzles and further actuators which have an effect on the state of flow, and a thermal state is provided by the temperature distribution and effect of radiation in the vehicle interior. Provision is made by the invention for the at least one control panel to be used to prescribe a state of flow desirable for the occupant and a thermal state.

Abstract: A helical screw compressor is provided having a first compressor stage and a second compressor stage. The helical screw compressor includes a first male rotor and a first female rotor in the first compressor stage, and a second male rotor and a second female rotor in the second compressor stage. A connecting duct is provided between an outlet of the first compressor stage and an inlet of the second compressor stage, and a conduit is provided having a first end communicating with the connecting duct and a second end branching off into a first line and a second line. The first line is coupled to the first compressor stage for injecting liquid into the first compressor stage, and the second line is coupled to the second compressor stage for injecting liquid into the second compressor stage.

Abstract: A method for automatically controlling an air conditioning device includes determining vehicle interior and exterior temperatures, and supplying a mixture of fresh air and circulating air to the air conditioning device in a hot start when the interior temperature exceeds the exterior temperature. An air conditioning device for a motor vehicle includes a hot start mode and a normal mode. In the hot start mode when the vehicle interior temperature exceeds the vehicle exterior temperature, a mixture of fresh air and circulating air is supplied to the air conditioning device. The air conditioning device operates in the normal mode when the vehicle exterior temperature exceeds the vehicle interior temperature.

Abstract: A vehicle air conditioner control apparatus having a telecommunication cable communicating between a remote control and a drive control to facilitate system operation and construction. The apparatus includes an input part for enabling a driver to control operations of the air conditioner; the remote control part for transforming a manipulated signal of the input part to a transmission signal and sending same through a communication cable; the drive control part for generating and outputting a signal to drive the air conditioner correspondingly to the transmission signal received from the remote control part; a drive part for operating according to the drive signal output from the drive control part and performing a function to cool off the vehicle; and a compressor pressure switch for showing the input status of the compressor.

Abstract: Apparatus and method for controlling the composition of the atmosphere within a refrigerated container during the storage and/or transportation of perishable and/or respiring produce in which carbon dioxide and ethylene (and other evolved hydrocarbons) are removed from the container atmosphere by adsorption, the adsorptive materials being regenerated with ambient air.

Abstract: A refrigerator includes a first passage including a cold storage zone capillary tube and a cold storage zone evaporator, the latter two being connected in series to each other, a second passage including a freezing zone capillary tube and a freezing zone evaporator, the latter two being connected in series to each other, a switching valve causing the refrigerant condensed by the condenser to flow selectively through any one of the first passage, the second passage and both the first and second passages, a variable speed, cold storage zone fan circulating air in the cold storage zone while the air is in contact with the cold storage zone evaporator, a variable speed, freezing zone fan circulating air in the freezing zone while the air is in contact with the freezing are evaporator, and a control device switching the switching valve upon power supply to the refrigerator so that the refrigerant flows simultaneously through both the first and second passages, starting the compressor, starting the cold storage zon

Abstract: A refrigeration system disposed within an outer cabinet having a freezer compartment and a fresh food compartment comprises a freezer evaporator and a fresh food evaporator each having an inlet and an outlet. A compressor is coupled to the freezer evaporator via a conduit and a control valve is disposed at the inlet of the freezer evaporator to control refrigerant flow therethrough. A first liquid line temperature sensor is disposed so as to detect refrigerant temperature at the inlet of the freezer evaporator and a second liquid line temperature sensor is disposed so as to detect refrigerant temperature at the inlet of the fresh food evaporator. A freezer compartment temperature sensor and a fresh food compartment temperature sensor are disposed within the freezer compartment and the fresh food compartment, respectively, to sense compartment a temperatures.

Abstract: An air conditioner/heater automatically operates in either air conditioning or heating mode by coil temperatures of indoor and outdoor heat exchangers. In air conditioning mode, the rotating speed of indoor fan motor is proportional to the ambient temperature of corresponding enclosed space, and the rotating speed of outdoor fan motor is proportional to the coil temperature of corresponding outdoor heat exchanger. In heating mode, the rotating speed of indoor fan motor is proportional to the coil temperature of corresponding indoor heat exchanger, and the rotating speed of outdoor fan motor is inversely proportional to the coil temperature of corresponding outdoor heat exchanger. With this automatic switching of operation mode, the capability of heat dissipation of condenser is always larger than the capability of heat absorption of evaporator. Hence, the operation of the air conditioner/heater is maintained at an optimum.