Abstract: A method of controlling a temperature altering element within a seating assembly of a vehicle comprising: presenting a vehicle including a seating assembly including a temperature altering element, a controller in communication with the temperature altering element, the controller including a Pre-established Predictive Activation Model setting forth rules governing the activation of the temperature altering element as a function of data relating to Certain Identifiable Conditions, and a user interface configured to allow the temperature altering element to be manually activated or deactivated; occupying the seating assembly with a first occupant; collecting data relating to the Certain Identifiable Conditions while the first occupant is occupying the seating assembly; determining, by comparing the collected data to the rules of the Pre-established Predictive Activation Model, whether the collected data satisfies the rules of the Pre-established Predictive Activation Model so as to activate the temperature alt

Abstract: A HVAC apparatus for a vehicle having a fan unit with at least one impeller driven by a motor; a heat exchanger unit forming an air duct receiving air from the fan unit, wherein the heat exchanger unit comprises a heat exchanger having at least two different cooling regions with different working temperatures through which received air flows consecutively; and wherein the different working temperatures are controlled by a temperature control unit; and a plate-shaped housing accommodating the fan unit and the heat exchanger unit.

Abstract: A system for managing drainage of heat pump coil condensate using a building's legacy heat piping infrastructure. The system includes a drainage pan that accumulates condensate and directs it into condensate piping. The condensate piping feeds the condensate into the building's legacy heat piping infrastructure, preferably after treating the condensate with a neutralizer to reduce its acidity. The system also includes a system control for monitoring the accumulated condensate levels and the status of the legacy heating system to determine when to open a flow control means allowing the condensate to drain from the condensate piping into the building's legacy heat piping infrastructure.

Abstract: A stand-alone ice and beverage dispenser is provided. Appliance includes a cabinet defining a chilled chamber, a bottom portion and a countertop. Appliance includes an ice maker assembly mounted on the countertop, a liquid dispenser assembly mounted on the countertop, and a sealed refrigeration system. Sealed refrigeration system includes a compressor, condenser, chamber evaporator, and an ice maker assembly evaporator fluidly coupled through a refrigerant conduit. The compressor is operably coupled to the refrigerant conduit for circulating a flow of refrigerant through the refrigerant conduit. Appliance also includes refrigerant valve assembly including one or more valves. Refrigerant valve assembly is configured to selectively provide refrigerant to chamber evaporator to refrigerate chilled chamber and selectively provide refrigerant to the ice maker assembly evaporator for ice production.

Abstract: A thermal management system for a hybrid vehicle includes an expander, a heat exchanger, a condenser, a water tank, a pump, a heat exchanger for a battery pack, a heat exchanger for a motor, a water cooling jacket for an engine, an exhaust gas heat exchanger for an engine, a valve, and so on. According to the present disclosure, in thermal management loops, different operating modes of the system can be switched by controlling the open-close and opening of the valve. In this way, a series/parallel connection of thermal management branches of an electrical system and an engine system is fulfilled to meet the requirements for heat dissipation and preheating, and flux in each branch is regulated to fulfill thermal management according to different driving conditions of a hybrid vehicle.

Abstract: A heat exchanger includes a first tube extending along a central axis. The first tube defines a chamber that contains a first medium. A corrugated sheath of the heat exchanger is disposed radially outward from and extends circumferentially about the outer face for transferring heat through the inner tube.

Abstract: A method for detecting whether an article with an abnormal temperature is placed in a refrigerator. The method includes: controlling a plurality of infrared sensors to collect temperature values after a door body is opened; determining whether an abnormal storage space in which the article with the abnormal temperature is possibly placed exists in a plurality of storage spaces; acquiring a first temperature change value of the abnormal storage space between time points before and after the article with the abnormal temperature is possibly placed in the abnormal storage space and a second temperature change value of the abnormal storage space caused by heat exchange between an external environment and the abnormal storage space between said time points; and determining whether the article with the abnormal temperature is placed in the abnormal storage space according to the first temperature change value and the second temperature change value.

Abstract: A control method for controlling a refrigerator includes a first step for driving a compressor for compressing a refrigerant and a fan for moving air, a second step for driving the compressor and stopping the fan, a third step for stopping the compressor and driving the fan, and a fourth step for stopping the compressor and the fan.

Abstract: An air mixing device mitigates temperature stratification between two incoming air streams by creation of turbulent airflow through an arrangement of channels in the device. The device also provides selective passage of air for incoming airstreams to achieve functionality for damper control typically associated with separate inlet dampers. Static mixing plates may be employed to affect desired mixing through the device. A method provides for selectively controlled airflow through the device so effective mixing occurs along with an economizer function to control separate airstreams such as outside air and return air. Existing dampers may be integrated with the air mixing device to control airflow in which flow of one airstream through the device increases as the flow of the other airstream is proportionately decreased.

Abstract: A refrigerator comprises: a cabinet having a refrigerating chamber; a refrigerating chamber evaporator provided to correspond to the refrigerating chamber, and configured to generate cool air by a driving of a compressor; an evaporator temperature sensor mounted to the refrigerating chamber evaporator, and configured to sense a temperature; a blower fan configured to supply cool air generated from the refrigerating chamber evaporator to the refrigerating chamber; and a controller configured to determine whether to stop the blower fan or not, based on a temperature of the refrigerating chamber evaporator sensed by the evaporator temperature sensor when the compressor is stopped.

Abstract: A refrigerator may include a sensor configured to measure temperature, a thermoelectric device module having at least one fan and configured to cool the storage compartment; and a controller that controls a rotation speed of the fan. The rotation speed of the fan may be determined based on at least one of whether a storage compartment temperature condition measured by the sensor exists or whether an initial power input condition exists. The thermoelectric device module may be controlled differently in a first temperature region, in a second temperature region, and in a third temperature region of the storage compartment. When an initial power condition exist such that power is initially supplied to the refrigerator, the fan is controlled to spin at a rotation speed that exceeds a rotation speed corresponding to the third temperature region until a preset temperature within the second temperature region is reached.

Abstract: A vehicular air-conditioner includes: a wind changing unit that changes at least one of a wind volume and a wind direction of air-conditioned wind, a temperature detection unit that detects a surface temperature of an object based on radiation from the object, a detection position changing unit that changes a position of a detection target region that is a region in which the surface temperature is to be detected by the temperature detection unit, and a control unit that controls each operation of the wind changing unit and the detection position changing unit. The control unit controls at least one of the operation of the wind changing unit and the operation of the detection position changing unit to suppress changes in the wind volume of the air-conditioned wind in the detection target region when a portion of the surface of an occupant is in the detection target region.

Abstract: Air conditioning system for a vehicle which includes an air-conditioning module having an air-conditioning case, which has a cold air passageway and a warm air passageway partitioned from each other, and a blower unit, and an indoor air inflow duct for introducing indoor air of the interior of the vehicle into the blower unit. An outlet of the air-conditioning case and an inlet of the indoor air inflow port are arranged to be adjacent to each other, so that the air conditioning system for a vehicle can be installed through just one through hole part formed in a dash panel.

Abstract: A thermal system (20) for rapidly heating and cooling a mold surface (24) of a tool (26) comprises a heater-subsystem (40) in fluid communication with the tool (26). The heater-subsystem (40) comprises a heater (42), a tank (44), and a three-way valve (46). The tank (44) contains a mass of heated thermal fluid. The system (20) further comprises an exchanger-subsystem (49) in fluid communication with the heater-subsystem (40) and the tool (26). The exchanger-subsystem (49) comprises an exchanger (51) and a three-way valve (53). The system (20) further comprises a chiller-subsystem (48) in fluid communication with the exchanger-subsystem (49). The chiller-subsystem (48) comprises a chiller (50), a tank (52), and a three-way valve (54). The tank (52) contains a mass of cooled thermal fluid. A controller (56) can be used to control and/or instruct the subsystems (40,48,49). The system (20) and tool (26) can be used for forming a composite article (22), such as a carbon fiber composite (CFC) article (22).

Abstract: According to an embodiment, a refrigeration system that cools a compartment includes a compressor, a condenser, a condenser fan, a condenser fan motor, an evaporator, an evaporator fan, an evaporator fan motor, and tubing adapted to transport refrigerant through the refrigeration system in a circulation order from the compressor to the condenser to the evaporator and back to the compressor again. The evaporator fan may be positioned in an air inlet path to the evaporator. The evaporator fan motor may be outside a chilled air circuit of the evaporator.

Abstract: Provided are a refrigerator and a control method thereof. The refrigerator according to the embodiment includes a compressor configured to compress a refrigerant; a condenser configured to condense the refrigerant compressed by the compressor; a flow control part disposed at an exit side of the condenser to switch a flow direction of the refrigerant condensed by the condenser; a plurality of branch pipes configured to extend from the flow control part; an expander installed at the plurality of the branch pipes to depressurize the refrigerant; a plurality of evaporators connected to the plurality of branch pipes; and a bypass pipe configured to extend from an exit side of one of the plurality of evaporators to an entrance side of the other evaporator and having a bypass expander installed thereat to depressurize the refrigerant.

Abstract: A vehicle having a heating and cooling system includes a cold source through which a first flow of coolant flows, a heat source through which a second flow of coolant flows, and first and second parallel connected air-to-coolant heat exchangers. The first and second coolant flows are directed through one or both of the air-to-coolant heat exchangers dependent upon a mode of operation. A control module controls the first and second flows of coolant dependent upon the mode of operation.

Abstract: A method of controlling operations of an HVAC system includes measuring temperature within an enclosed space, receiving a setpoint temperature within the enclosed space, calculating a temperature difference between the measured temperature and the received setpoint temperature, and determining whether the temperature difference between the measured temperature and the received setpoint temperature is greater than or equal to a first predetermined temperature differential value. If the temperature difference between the measured temperature and the received setpoint temperature is greater than or equal to the first predetermined temperature differential value, determining whether the temperature difference between the measured temperature and the received setpoint temperature is greater than or equal to a second predetermined temperature differential value.

Abstract: A heat pump and a control method thereof, the control method of the heat pump which heats a heated space through heat exchange between outdoor air and a refrigerant and heat exchange between the refrigerant and circulation water, includes calculating the maximum allowable frequency of a compressor based on the temperature of the outdoor air and the heating load of the heated space, calculating the mean operating frequency of the compressor while the compressor is operated at the calculated maximum allowable frequency, recalculating the maximum allowable frequency based on a result of comparison between the mean operating frequency and the maximum allowable frequency, and operating the compressor at the recalculated maximum allowable frequency, thereby improving coefficient of performance (COP) of the heat pump.

Abstract: An air conditioning apparatus includes an outdoor unit and an indoor unit having an indoor heat exchanger and an indoor fan. An airflow rate setting of the indoor fan can be manually instructed. An indoor airflow rate limitation control useable to forcibly limit the airflow rate setting of the indoor fan to be nearer to a low airflow rate in accordance with an outside air temperature is carried out with the airflow rate setting of the indoor fan having been manually instructed.

Abstract: A refrigerator and a method for controlling a refrigerator are provided. The method may include driving a refrigerating cycle including a first evaporator and a second evaporator by activating at least one compressor, supplying refrigerant to the first and second evaporators by controlling a flow adjuster, recognizing whether the refrigerant is unequally introduced into the first or second evaporator, by sensing a temperature of the first or second evaporator through at least one temperature sensor, reducing supply of the refrigerant to the first or second evaporator into which the refrigerant is unequally introduced, by adjusting the flow adjuster, storing information about an operation time of the flow adjuster, recognizing whether the at least one temperature sensor has malfunctioned, and determining an operation time of the flow adjuster according to whether the at least one temperature sensor has malfunctioned.

Abstract: An electric component box that accommodates therein an electric component, which includes: a control board that controls an air conditioner indoor unit; a power supply and indoor-outdoor wiring terminal block that is provided on the control board and is connected to a communication wire wired from the air conditioner indoor unit to an air conditioner outdoor unit and is connected to a power wire that supplies power; and a communication-wire terminal block that is provided on the control board and is connected to a communication wire for an external input.

Abstract: A heat exchanger assembly, a refrigerator, and a method of controlling a refrigerator are provided. The heat exchanger assembly may include a heat exchanger provided on or at a side of a refrigerator body, the heat exchanger including a refrigerant tube, in which a refrigerant may flow, and at least one heat exchange fin, in which the refrigerant tube may be inserted, a temperature sensor disposed on or at an inlet-side or an outlet-side of the heat exchanger to detect a temperature of the refrigerant, and a sensor holder to fix a guide tube disposed on or at an inlet-side or outlet-side of the refrigerant tube and the temperature sensor in a state in which the guide tube is in contact with the temperature sensor.

Abstract: In a method for adjusting a fan of an electronic device, a sensor of the electronic device detects an instant work environment temperature of an electronic component of the electronic device. The detected temperature is obtained from the sensor. The speed of the fan under the detected temperature and a speed of the fan to which it may be adjusted is computed using a predefined algorithm based on prestored values, obtained from experimentation. The fan is adjusted to achieve a heat dissipation mode and an energy-saving mode of the electronic device accordingly.

Abstract: A device for cooling the heat engine, electrical components, and an electrical energy storage device including: a first circuit, a second circuit, and a third circuit for cooling each of the heat engine, the electrical components, and the electrical energy storage device, respectively; a heat exchange device separated into three members, including a high temperature member connected to the first circuit, a low temperature member connected to the second circuit, and a very low temperature member connected to the third circuit; an upstream valve connected between the first and the third circuit located upstream of the high temperature member of the heat exchanger in the first circuit; and, a downstream valve connected between the first circuit and the third circuit located downstream of the high temperature member of the heat exchanger in the first circuit, where the downstream valve is a thermostatic valve which is actuated as a function of the temperature of the heat transfer fluid in the first circuit and wh

Abstract: An air conditioning system for a vehicle and a method for operating the air conditioning system which at least has: an air conditioner having a fan, a recirculating air flap for setting a recirculating air operation or an external air operation, a gas sensor for measuring a gas concentration, in particular a CO2 concentration in a vehicle cabin, and outputting a measuring signal, and a control unit for receiving the measuring signal of the gas sensor, for setting a recirculating air position or an external air position of the recirculating air flap and for controlling the gas sensor, the control unit switching the gas sensor into different operating modes in recirculating air operation than in external air operation.

Abstract: A refrigeration appliance has a cabinet having a first compartment, a second separate compartment and a refrigeration system including a compressor, an evaporator and a condenser. The evaporator is associated with the first compartment to lower a temperature of the first compartment air. A heat exchanger is exposed to the temperature of the first compartment and has a surface area exposed to second compartment air. An air moving device is associated with the second compartment to direct a flow of second compartment air over the heat exchanger surface area and circulate the second compartment air within the second compartment. The cabinet, compartments and heat exchanger are configured such that first compartment air is completely isolated from second compartment air.

Abstract: A refrigerator is provided having a refrigeration system including a variable speed compressor, a condenser, a condenser fan, an evaporator, a variable speed evaporator fan. The refrigerator further includes multiple temperature sensors that communicate with an electronic microprocessor-based control system that in turn controls the operation of the refrigerator system based on the information provided by the multiple temperature sensors.

Abstract: A frozen beverage freezer machine is provided with two side-by-side freezer cylinders containing different flowable frozen beverage products. Draw valves are provided to draw the beverages separately for dispensing separately from the two beverage freezer cylinders. An additional draw valve, generally centered relative to the freezer cylinders, is provided to draw beverages from the two cylinders simultaneously for dispensing a mix of the two beverages. Clog breaker blades are coupled to the center draw valve assembly to inhibit clogging of passageways from the frozen beverage cylinders to the center valve, to facilitate reliable flow and mixing of the two beverages when the center valve is opened to dispense the mix into a user's receiver cup.

Abstract: In a hybrid-electric vehicle that includes a cabin, methods and systems are provided for modifying a first curve for engine coolant temperature (ECT) warm-up trajectory. The system includes a processor configured to execute software instructions, and a memory configured to store software instructions accessible by the processor. In one embodiment, the software instructions comprise an offset lookup table that is configured to generate, based on a calculated thermal power loss across a heater core and an ambient air temperature, an offset value for modifying the first curve for ECT warm-up trajectory to produce a desired curve for ECT warm-up trajectory that is offset from the first curve. The desired curve for ECT warm up trajectory is used to adjust temperature in the cabin so that fuel consumption can be reduced.

Abstract: An air-conditioning apparatus includes a heat medium circuit with a heat medium flow reversing device that can switch the flow direction of a heat medium in the heat medium side passage of the heat exchanger related to heat medium.

Abstract: A chiller bypass system is provided for deployment onboard a vehicle that includes a battery pack through which a first coolant is circulated. In one embodiment, the chiller bypass system comprises a chiller, a chiller bypass duct fluidly coupled to the battery pack and configured to supply the first coolant thereto, and a chiller bypass valve. The chiller bypass valve includes: (i) a valve inlet fluidly coupled to the battery pack and configured to receive the first coolant therefrom, (ii) a first valve outlet fluidly coupled to the chiller and configured to supply the first coolant thereto, and (iii) a second valve outlet fluidly coupled to the chiller bypass duct and configured to supply the first coolant thereto. The chiller bypass valve selectively directs coolant flow between the first valve outlet and the second valve outlet to adjust the volume of the first coolant cooled by the chiller.

Abstract: Assemblies for HVAC systems and methods of operating HVAC systems are disclosed, including a method of operating an HVAC system having a condenser motor operatively coupled to a fan and a controllable bus voltage for powering the condenser motor. The method includes increasing the controllable bus voltage from a first voltage to a second voltage to increase a speed of the condenser motor.

Abstract: An apparatus and method for controlling driving of a plurality of fan motors for a refrigerator are provided. When operated, the plurality of fan motors provided in the refrigerator is sequentially operated at certain delay times, to thus improve operation efficiency of the plurality of fan motors. The apparatus for controlling driving of a plurality of fan motors includes blowing devices that supply cool air, a driving device that generates drive signals to drive the blowing devices, a controller that controls operation of the driving device, a power device that provides operation power of the driving device and the controller, and a cutoff device positioned between the driving device and the power device that cuts off noise and a surge voltage introduced from the power device to the driving device.

Abstract: An optimizer for a single staged refrigeration system comprising a speed modulation device, controller, and supply air temperature sensor. The optimizer is intended for modulating the speed of the indoor fan and compressor in existing or new refrigeration systems in settings including but not limited to residential houses/buildings, residential heat pump systems, commercial heat pumps systems, water source heat pumps, and roof top units. The optimizer solves humidity and noise problems in existing systems, reduces peak demand, increases energy efficiency, reduces energy consumption rates, and minimizes compressor failure rates and O&M costs.

Abstract: A refrigerator which variably controls operation of a sterilizer according to variation in humidity within the refrigerator to improve sterilizing capacity includes a control unit to drive the sterilizer while repeatedly turning the cold air circulation fan on/off during a refrigerating cycle in which the defrosting heater is not operated, and stop driving the sterilizer during operation of the defrosting heater.

Abstract: A refrigerant system (10, 100, 200) is provided with a power control system (30, 130, 230). The power control system adjusts the speed of the motors driving the refrigerant system components such as a compressor, a fan or a pump via a variable speed device (75, 175, 275) or bypasses the variable speed device (75, 175, 275) for normal operating speeds. A single power control system may be provided for the entire refrigerant system or each component may be independently controlled.

Abstract: A humidity control system (10) is disclosed which includes a refrigerant circuit (60). The refrigerant circuit (60) includes first and second absorbent-supported heat exchangers (61, 62) and performs a refrigeration cycle by the circulation of refrigerant. In addition, in the refrigerant circuit (60), the circulation direction of refrigerant is reversible. The first and second heat exchangers (61, 62) are disposed in a casing (11). In the humidity control system (10), the distribution route of air is changed such that a first air stream is passed through either one of the first and second heat exchangers (61, 61) that is functioning as an evaporator while a second air stream is passed through the other heat exchanger that is functioning as a condenser. A compressor (63), an expansion mechanism (65), and a four-way valve (64) in the refrigerant circuit (60) are disposed together with the heat exchangers (61, 62) in the casing (11).

Abstract: A hybrid heating apparatus heats potable water with waste heat from heat recovery units and insolation from solar collectors. A single circulation pump circulates fluid between at least one heat exchanger and each of the heat recovery units and preferably the solar collector. A single controller receives sensor readings from the heat recovery units and the solar collector units and receives a demand to heat the potable water. To satisfy the demand, the controller determines the extent to which the demand may be satisfied from heat available from the heat recovery units and the solar collector units and sends command signals both to the circulating pump to circulate the fluid and to appropriate ones of valves at connections to those heat recovery units and solar collector units to allow fluid to circulate to be heated to flow to the heat exchanger for effecting heat exchange to heat the potable water.

Abstract: A gas/air compressor system used for compressing a gas/air stream of air, oxygen, oxygen-enriched air and other combustible gases and delivering a moderate-to-high temperature, moderate-to-high pressure fluid to a pipeline connected to one or more injection wells. Fuel with cooling water is injected downhole for combustion in the compressed gas/air stream to be used for in-situ-retorting of oil shale, volatile coal beds, tar sands, heavy oil and other hydrocarbon or carbonaceous deposits. A preferred embodiment of the compressor system includes a compressor housing with a male screw rotor having helical lobes received in helical grooves in a female screw rotor. The housing includes a gas/air inlet for receiving the gas/air stream therein and a series of water/mineral injectors for injecting a water/mineral slurry into the rotating screw rotors. The water/mineral slurry acts as a sealant, a lubricant and also a coolant for male and female screw rotors during the compression cycle.

Abstract: A temperature control device for a target substrate includes a mounting table having temperature control members respectively provided in temperature systems to control temperatures of regions of the target substrate to respective predetermined temperature levels; circulation channels through which fluids passing through the temperature control members flow; and heating channels each for flowing therein a heated fluid having a higher temperature compared to the fluids circulating in the circulation channels. The device further includes cooling channels each for flowing therein a cooled fluid having a lower temperature compared to the fluids circulating in the circulation channels; and joining units that join the circulation channels to build the respective temperature control systems, the joining units having flow rate control units that controls flow rate ratios of the fluids supplied from the respective channels to the temperature control members.

Abstract: A refrigerant system adjusts, in a coordinated prioritized manner, the variable capacities of a compressor, evaporator fan and a condenser fan to minimize the system's overall power consumption while maintaining a comfort zone within a target comfort range. The target comfort range is defined by desired temperature and humidity limits. When the comfort zone is within the target comfort range, the system periodically attempts to reduce the compressor capacity. If the attempt succeeds, the evaporator fan capacity is then minimized. The condenser fan capacity can also be minimized provided the refrigerant system can maintain at least a minimum saturated suction temperature of the refrigerant flowing from the condenser to the compressor.

Abstract: A cooling system for providing conditioned air to a facility includes a chiller or other cooling subsystem, a cooling tower subsystem and one or more air handling units or process cooling units. The cooling subsystem may advantageously include one or more chillers (e.g., variable speed chillers, constant speed chillers, absorption chillers, etc.) and chilled fluid pumps. The cooling tower subsystem includes one or more cooling tower units and condenser fluid pumps. In some implementations, the air handling unit has a cooling coil and a variable volume fan. In some implementations, direct expansion (DX) cooling systems comprise compressors, evaporators and air-cooled, water-cooled or evaporatively-cooled condensing systems. Such systems can be controlled to reduce energy waste, improve occupant comfort and/or improve the thermal characteristics of the process cooling unit.

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: An air conditioner includes a thermoelectric device, and a first line with a first fluid therein. The first line is configured such that the first fluid can exchange heat with a first surface of the thermoelectric device, and configured to discharge the fluid to a space. A second line has a second fluid therein. The second line is configured such that the second fluid can exchange heat with a second surface of the thermoelectric device, and pass through a heat sink to further exchange heat. A control unit supplies electricity to the thermoelectric device such that the first surface absorbs heat in a cooling mode and the second surface absorbs heat in a heating mode. The control unit also controls a flow rate of the second fluid, such that the flow rate is higher in the cooling mode than in the heating mode.

Abstract: Variable speed drives are utilized in refrigerant systems to operate motors of the system components at varying speeds, typically for the purposes of capacity adjustment, efficiency enhancement, reliability improvement or power consumption limitation. However, variable speed controls are expensive. The present invention offers flexibility to utilize a variable speed drive to provide variable speed functionality between compressor and fans (or other rotating components having electric motors) within a refrigerant system depending on operational and environmental conditions and external load demands. The switching device switches the variable speed drive between component motors as indicated by a control for the refrigerant system.

Abstract: A refrigeration and freezing device with fresh-keeping function by supplying nitrogen comprises a box body, a refrigerating and freezing chamber disposed inside the box body, a door to the refrigerating and freezing chamber, a control device and a nitrogen generator; wherein said nitrogen generator is disposed either inside or outside the box body of the refrigeration and freezing device, said nitrogen generator comprises an air inlet, an oxygen outlet, a nitrogen outlet, an air filter connected with the air inlet, a compressor, a pipe device for transmitting gas, at least one carbon molecular sieve absorber, at least one control valve to control different absorbers to work alternately, a nitrogen storage container, a nitrogen purifier, a pressure reducing valve for adjusting the pressure of the produced nitrogen, a ventilating muffler disposed on a pipe to the oxygen outlet and a control circuit.

Abstract: A control method of a multi-air conditioner in which a plurality of indoor units is connected to one outdoor unit and refrigerant flow amount is adjusted by electronic expansion valves comprises a share step in which a plurality of indoor units exchanges their operation information, a comparison and judgment step in which each above indoor unit compares and judges its operation status based on the exchanged operation information, and an adjustment step in which each above indoor unit adjusts refrigerant flow amount supplied to each indoor unit based on the compared and judged operation status.

Abstract: A refrigerator is provided which can individually cool a freezing chamber and a refrigerating chamber by dividing a heat exchange region of an evaporator into a freezing chamber side region and a refrigerating chamber side region, forming individual circulation passages for supplying cool air from each region to the freezing chamber and the refrigerating chamber, and forming a freezing chamber fan and a refrigerating chamber fan on each circulation passage. Further, a method for controlling operation of the same is provided which can efficiently perform a cooling operation and reduce power consumption by effectively controlling the operations of each component.

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.