Abstract: A heating, ventilation, and air conditioning (HVAC) system for a vehicle may include a blower unit, an evaporator unit, and a conditioning unit. The blower unit includes a fan that draws in air into the HVAC system. The evaporator unit is downstream from the blower unit, and the air drawn in by the fan flows through an evaporator of the evaporator unit. The conditioning unit is downstream from the evaporator unit. The blower unit is disposed below the conditioning unit.

Abstract: A thermoelectric cooling system includes a thermoelectric device that transfers heat from a cold side to a hot side via a Peltier effect, an air heat exchanger that transfers heat from air to the cold side, and a heat sink that transfers heat from the hot side to a fluid coolant. The system also includes a temperature sensor that measures a temperature of air, and a controller that controls a flow of electrical power to the thermoelectric device according to a temperature measurement. The system also transfers heat from the air heat exchanger to the heat sink via the thermoelectric device according to a heat conduction effect due to a temperature difference between the air heat exchanger and the fluid coolant. The controller may reduce an effective voltage across the thermoelectric device to reduce power consumption of the thermoelectric device.

Abstract: Methods and systems for controlling an electric motor are provided herein. The system is configured to be coupled to a power supply. The electric motor system includes a rectifier, an electric motor, and a microcontroller. The rectifier is configured to convert an alternating current (AC) voltage input to a direct current (DC) voltage. The microcontroller is configured to extract power from a generator device.

Abstract: A refrigeration system includes a supplemental heat exchanger operably disposed between a condenser and an evaporator. This supplemental heat exchanger is located in selective fluid communication with the air in the conditioned space, and can be toggled between an “invisible” mode in which the heat exchanger acts as a simple fluid conduit between the condenser and evaporator, and a “humidity reduction” mode in which the heat exchanger operates to transfer heat from hot refrigerant to the colder conditioned space. This addition of heat into the conditioned space decreases the relative humidity of the conditioned space and subcools the refrigerant leading to the expansion valve and evaporator. This subcooling of the liquid enables the evaporator to operate at a lower temperature which enhances the moisture removal from the air moving through the evaporator.

Abstract: A sample cooling device is provided with, inside a sample storage which stores therein a sample rack, a first heat transfer member arranged at a position in contact with the sample rack, a second heat transfer member which cools the inside of the sample storage, and a condensate discharge mechanism which discharges condensate condensing on the second heat transfer member to the outside of the sample storage. An internal space of the sample storage is not sealed due to the existence of a leak path for air formed between the inside and the outside of the sample storage, the leak path including at least the channel. The sample storage includes an outside air introduction unit which forcibly blows the outside air into the internal space so that the pressure inside the sample storage becomes higher than the outside pressure thereof.

Abstract: The present invention relates to an air conditioner and to an outdoor unit. More particularly, the present invention relates to an air conditioner having a plurality of indoor units, wherein said air conditioner comprises a distribution unit which is accommodated in an outdoor unit of the air conditioner and connected to the outdoor unit and indoor units, or which is separated from the outdoor unit and connected to the outdoor unit and indoor units to distribute refrigerant to the plurality of indoor units.

Abstract: The present invention relates to air conditioners, and more particularly, to an air conditioner which can reduce a rotation direction velocity component of air being discharged from a fan and can enhance fan efficiency and installed space utilization.

Abstract: One aspect provides a cooling system, and method of manufacture thereof, that has a housing having at least one condenser attached thereto and an auxiliary condenser attached to the housing. A refrigeration loop fluidly couples at least one condenser and the auxiliary condenser. A compressor forms a portion of the refrigeration loop, wherein the auxiliary condenser is interposed the compressor and at least one condenser within the refrigeration loop that forms a refrigerant path from the compressor to the auxiliary condenser and from the auxiliary condenser to at least one condenser. A fan located within the housing is positioned to force air through the auxiliary condenser and out of the housing.

Abstract: A method for operating a vapor compression system modifies each control signal of a set of control signals with a corresponding modification signal of a set of modification signals, wherein each modification signal includes a perturbation signal, and the pertubation signals haver different frequencies and determines a metric signal representing perturbations in the system caused by the set of modification signals. Next, the method adjusts a value of each modification signal based on a function of a phase between the modification signal and a corresponding frequency component of the metric signal.

Abstract: The filter 3 is extruded to the outside of the casing of the air conditioner along the inner side of an open panel 15 which is provided at the front surface side of an air intake grill 14 and opened/closed at the time of the operation of the air conditioner.

Abstract: A cooling apparatus and method including a plurality of heat-producing devices positioned in a plurality of cabinets arranged in a row that allows flow of a first fluid through the heat-producing devices and cabinets where the flow is directed from an upstream end of the row to a downstream end of the row. The cabinets have a space therebetween wherein a heat exchanger is positioned between and adjacent to the cabinets, thereby the cabinets and heat exchangers alternate in the row. Each heat exchanger allows flow of a second fluid therethrough for cooling the first fluid. A fluid-moving device is positioned adjacent the heat-producing devices for encouraging flow of the first fluid through the cabinets' heat-producing devices and through the heat exchangers, thereby encouraging heat transfer in each of the heat exchangers from the first fluid to the second fluid.

Abstract: The present application provides a cooling system having a refrigerant-to-refrigerant heat exchanger having first and second flow passages extending therethrough and a cold plate having first and second flow passages extending therethrough, the first flow passage of the cold plate configured to communicate with the first flow passage of the heat exchanger and the second flow passage of the cold plate configured to communicate with the second flow passage of the heat exchanger. During low ambient air temperatures, a vehicle battery is cooled to its operational temperatures by the cold plate without having to operate a vapor compression loop.

Abstract: A refrigerator includes: a refrigerator body having a food storage space; a door opening/closing the storage space; a heat exchange chamber provided inside the refrigerator body and in which an evaporator is installed; an ultra-low-temperature storage separately provided in the storage space; and a supply unit directly supplying cooling air generated from the heat exchange chamber to the ultra-low-temperature storage.

Abstract: A heat pumping unit includes a first heat exchanger, a second heat exchanger and a pump. An outlet of the first heat exchanger is connected to a vapor inlet of a liquid jet-ejector. A liquid outlet of the ejector is connected to an inlet of the second heat exchanger. An outlet of the second heat exchanger is connected at the same time to an inlet of the pump and through a pressure reducing device to an inlet of the first heat exchanger. The pump outlet is connected to the liquid-jet ejector liquid inlet.

Abstract: An adaptable base of the HVAC unit can allow an HVAC unit to align and seal with multiple duct opening configurations. Such opening configurations may be different footprints in different HVAC systems, such as may be employed for example in different roof curbs of rooftop HVAC units. The adaptable base includes a base plate, a supply air duct opening, a return air duct opening, where there is at least one additional opening for one or both of the supply air opening and the return air duct opening. Each opening has a seal around its perimeter. A seal is also arranged and located on the base plate about a perimeter around the supply air duct opening(s) and the return air duct opening(s). A cover can be connected to close one or more openings that are not being used with the unit.

Abstract: A refrigerator includes a refrigerator cabinet, a fresh food compartment disposed within the refrigerator cabinet, a freezer compartment disposed within the refrigerator cabinet below the fresh food compartment, and first and second French doors operatively connected to the refrigerator cabinet to provide access to the fresh food compartment. There is also a mullion between the fresh food compartment and the freezer compartment, an air inlet and an air outlet proximate a bottom of the first French door, and an air outlet and an air inlet on a front face of the mullion. When the first French door is in a closed position, the air inlet proximate the bottom of the first French door aligns with the air outlet on the front face of the mullion and the air outlet proximate the bottom of the first French door aligns with the air inlet on the front face of the mullion.

Abstract: Provided is a cooling system wherein a first two-phase refrigerant can be circulated by a pump through an evaporator, to a first condenser, to a refrigerant-to-refrigerant heat exchanger and back to the pump. By providing the refrigerant-to-refrigerant heat exchanger in series with the condenser, a first environment can be cooled without having to operate a vapor compression circuit when an ambient temperature outside the first environment is a predetermined amount below an ambient temperature in the first environment.

Abstract: A blower having a divergence guide portion to reduce flow loss and discharge noise and an air conditioner having the same are provided. The blower includes a scroll casing, suction holes provided at opposite positions of the scroll casing, a discharge hole provided at a top position of the scroll casing, a centrifugal fan received in the scroll casing, and a divergence guide portion gently diverging air to the discharge hole after passing through the centrifugal fan to diffuse the air to both sides of the discharge hole.

Abstract: An air conditioner is provided. The air conditioner includes: an indoor device installed at indoor; an outdoor device connected to the indoor device using a refrigerant pipe; a ventilation unit for exchanging heat of outdoor air and indoor air while ventilating indoor air and outdoor air; and a guidance duct for communicating the ventilation unit and an air inhalation portion of the outdoor device in order to guide indoor air exhausted from the ventilation unit to an air inhalation portion faulted in the outdoor device. Therefore, the number of ventilation holes to form in an outer wall of a building can be minimized, a construction cost can be reduced, and performance of the air conditioner can be improved.

Abstract: An air conditioning system including a blower, an evaporator, an airflow chamber, and a thermal expansion valve assembly. The airflow chamber extends between the blower and the evaporator to direct airflow generated by the blower to the evaporator. The thermal expansion valve assembly includes a valve and a sensor bulb. The valve is on an input side of the evaporator. The sensor bulb is arranged on an output side of the evaporator external to the airflow chamber, and in an airflow path of ambient air.

Abstract: An air-conditioning system for a vehicle may include a cooling unit including a radiator, a cooling fan to introduce air in the radiator, a water pump connected to the radiator through the cooling line, and a reserver tank provided on the cooling line to store a cooling fluid, a first condenser connected to the cooling line between the radiator and the reserver tank such that a cooling fluid is introduced and a refrigerant is introduced through a refrigerant line, and the refrigerant is condensed by heat exchange between the cooling fluid and the refrigerant, and a second condenser serially connected to the first condenser on the refrigerant line such that a condensed liquid phase refrigerant is introduced, and disposed on a front of the radiator such that the refrigerant is condensed by an air cooling type through heat exchange between the refrigerant and an outdoor air introduced on driving.

Abstract: A system and a method for controlling an operation of a vapor compression system are disclosed, such that a performance of the system measured in accordance with a metric of the performance is optimized. A control signal is modified with a modification signal including a perturbation signal having a first frequency, wherein the control signal controls at least one component of the vapor compression system. A metric signal representing a perturbation in the performance of the system caused by the modification signal is determined, wherein the metric signal has a second frequency substantially equal to the first frequency. The control signal is adjusted based on a function of a phase between the perturbation signal and the metric signal, such that the performance is optimized.

Abstract: The invention concerns an air conditioning system for conditioning the air of a passenger compartment of a motor vehicle including a housing with a first flow channel and a second flow channel for conducting air and a refrigerant circuit with an evaporator and a condenser. The evaporator is arranged in the first flow channel and the condenser in the second flow channel. The air conditioning system is designed for cooling and heating the passenger compartment and for a reheat operation. The setting of the operating mode is done only via the controlling of air guidance mechanisms. One of the heat exchangers evaporator or condenser is arranged with a part of the heat transfer surface in both the first and the second flow channel.

Abstract: A refrigeration system includes an airflow system which eliminates the traditional evaporator fan cover assembly in the freezer area by utilizing at least one air outlet formed between a freezer cavity area and a duct coupled to the fresh food cavity area. The air outlet is configured to permit at least a portion of a cooled air stream generated by a fan of the evaporator assembly received in the freezer cavity area to be provided to the fresh food cavity area through the air outlet and via the duct. The refrigeration system also includes at least one air return formed between the evaporator assembly and the fresh food cavity area. The air return is configured such that air from the fresh food cavity area flows into the evaporator assembly through the air return.

Abstract: An icemaking compartment is provided in the refrigerator compartment of a bottom mount refrigerator. An icemaker is within the icemaking compartment. A cold air duct supplies cold air from the freezer compartment to the icemaker. The cold air duct is formed in the rear wall of the refrigerator. A fan controls the flow of air through the cold air duct. A return air duct is provided to direct a portion of the air from the icemaker back to the freezer compartment. An air vent in the icemaker directs another portion of air into the refrigerator compartment.

Abstract: The present invention discloses a non-freezing refrigerator which can keep the contents in a non-frozen state by an electric field. The non-freezing refrigerator includes a setting unit for selecting and setting a magnitude and frequency of a voltage, a generating unit for generating an electric field according to the voltage having the set magnitude and frequency, and applying the electric field to a storing space for storing the contents, and a freezing cycle for cooling the storing space. The contents are kept in the non-frozen state below a phase transition temperature.

Abstract: A cooling unit (10) includes a housing (12) having a front (14) and a back (16), one or more fans (28) provided at either the front (14) or the back (16) of the housing (12), and a V-shaped evaporator (30) positioned within the housing (12) and coupled to a source of liquid refrigerant. The V-shaped evaporator (30) has two panels extending from adjacent to the bottom (22) of the housing to adjacent to the top (24) of the housing (12) when positioning the evaporator (30) in the housing (12). The arrangement is such that an inside of the panels of the evaporator (30) faces air being drawn through the housing (12) of the cooling unit (10) by the fan (28).

Abstract: Provided is an air conditioner. The air conditioner includes a mechanical chamber receiving a compressor for compressing a refrigerant and a water-cooled heat exchanger for heat-exchanging water introduced from the outside and flowing along a water pipe with the refrigerant, an air-cooled heat exchanger disposed on a top surface of the mechanical chamber, the air-cooled heat exchanger being fluidly connected to the compressor, and a fan disposed above the air-cooled heat exchanger. A refrigerant pipe constituting the air-cooled heat exchanger is bent several times along an outer edge of the fan and has a polygonal pillar shape extending in a vertical direction.

Abstract: Refrigerator with an icemaker including a cabinet having a mullion wall for compartmentalization of a freezing chamber and a refrigerating chamber, a case provided to a door on the refrigerating chamber, having a cavity therein, a first duct for supplying cold air from a neighborhood of an evaporator in the freezing chamber to the cavity, the icemaker in the cavity for producing ice, an ice container in the cavity for storing the ice, and a dispenser in the door in communication with the cavity, thereby having ice supplied to a user at an outside of the refrigerator through a dispenser provided to the door.

Abstract: A refrigeration unit is provided for conditioning air within a refrigerated chamber for housing perishable goods having an improved air exchange device for selectively admitting fresh air into the refrigerated chamber while simultaneously venting air from within the refrigerated chamber. The air exchange device includes a tubular member having a first chamber and a second chamber isolated from first chamber, the first chamber having an inlet in flow communication with a fresh air source and an outlet opening in flow communication with the refrigerated chamber on a suction side of the evaporator, and the second chamber having an inlet in flow communication with the refrigerated chamber in a discharge side of evaporator fan and an outlet opening in flow communication with a space exterior of the refrigerated chamber.

Abstract: A cooling apparatus that cools an HV appliance heat source includes: a compressor for circulating a coolant; a condenser for condensing the coolant; an expansion valve that decompresses the coolant that has been condensed by the condenser; an evaporator for evaporating the coolant that has been decompressed by the expansion valve; and a coolant passageway through which the coolant that moves from an outlet of the condenser toward an inlet of the expansion valve flows. The coolant passageway includes a passageway-forming portion that forms a portion of the coolant passageway. The cooling apparatus further includes a coolant passageway that is disposed in parallel with the passageway-forming portion, and that circulates the coolant via the HV appliance heat source.

Abstract: An air-exchange device for buildings, designed to be installed between an internal environment and an external environment, comprising, a casing having a substantially flattened parallelepiped shape; a heat exchanger housed inside said casing; and a first fan and a second fan, which have respective intake and delivery sections and are arranged for generating, respectively, a first airflow directed from the inside to the outside and a second airflow directed from the outside to the inside, where the first and second airflows are in a relationship of mutual heat exchange in said heat exchanger.

Abstract: An air duct device for refrigerator includes a first compartment, a second compartment, and a fan motor. The first compartment has a front opening and a rear opening. The second compartment has a front opening, and the second compartment is disposed by the first compartment and connected with the first compartment through an intermediate opening. The fan motor provided at a first location close to the front opening of the first compartment for taking in air from outside and blowing the air into the first compartment toward the rear opening of the first compartment. The condenser is installed at a second location between the first location and the rear opening of the first compartment and the compressor is installed at a third location between the second location and the the rear opening of the first compartment and the compressor.

Abstract: A device includes a portable chest, a radiator in the chest, a liquid pump in the chest that moves liquid through the radiator, and a fan for providing an airflow across the radiator. The portable chest stores a quantity of chilled water that is pumped through the radiator by the liquid pump to chill the airflow provided by the fan.

Abstract: A heat-exchanged cabinet structure is used to accommodate an electronic equipment. The heat-exchanged cabinet structure includes a main body, a first heat exchanger device and a second heat exchanger device. The main body has an accommodated space and a first housing. The electronic equipment is disposed in the accommodated space. The first heat exchanger device which has a condenser is disposed on the first housing and placed in the accommodated space. The second heat exchanger device which has an evaporator is placed in the accommodated space and is adjacent the first heat exchanger.

Abstract: Disclosed herein is a cooler of table-type, which can be easily kept in custody and reduce power consumption, and which can increase a cooling efficiency and provide a visual satisfaction to a user.

Abstract: An air conditioning unit has improved visual appeal in a non-operational state, and can reduce smudging of a ceiling in an air conditioned space by discharged air. The air conditioning unit is configured to be disposed above a space to be air-conditioned. The air conditioning unit includes a case, a first moveable panel, and a moveable panel actuating mechanism. The case has at least one discharge duct on a bottom face. The first moveable panel is configured to open and close the discharge duct. The moveable panel actuating mechanism moves the first moveable panels between a first position at which at least the outside section of the discharge duct is closed off, and a second position at which the outside section of the discharge duct is opened.

Abstract: The present application discloses embodiments of a housing configured for use in a heat exchange system. The housing includes one or more side panels with a plurality of openings. The openings each define a cross-sectional area and create a passageway through the side panel. The openings can include a first series of openings that includes all of the openings located within a bottom third portion of the side panel, a second series of openings that includes all of the openings within a middle third portion of the side panel, and a third series of openings that includes all of the openings located within a top third portion of the side panel, wherein the cumulative cross-sectional area of the first series of openings is greater than the cumulative cross-sectional area of the second series of openings which is greater than the cumulative cross-sectional area of the third series of openings.

Abstract: A centrifugal fan mounted in an air conditioner has the following relationship: outer diameter of a side plate of the centrifugal fan>outer diameter of the blade rear-edge part on side-plate side>diameter of the blade rear-edge part on main plate side>outer diameter of the main plate. In the centrifugal fan, the blade rear-edge part is positioned inside from a straight line connecting the connection point between the blade rear-edge part and the main plate, to the connection point between the blade rear-edge part and the side plate, as viewed from the rotation axis. The blade rear-edge part has a shape such that the distance from the rotation axis becomes larger from the main plate toward the side plate.

Abstract: An exemplary server system includes a server cabinet, two rows of racks arranged in the server cabinet, a number of servers mounted in the racks and a heat dissipating device. The server cabinet includes two side plates parallel to each other. The servers of each row are evenly distributed between the side plates. A channel is defined between the two rows of racks. The heat dissipating device includes an air conditioner arranged over the racks for generating cooling air and an air guiding mechanism. The air conditioner defines a number of apertures facing the passage. The guiding mechanism includes a number of tubes received in the passage and respectively coupled to the apertures of the air conditioner. Each of the tubes defines a number of air outlets for exhausting the cooling air towards the servers.

Abstract: A salad bar cooler comprises a top chamber 695, pan chiller chamber 680, return air chamber 695 and is integrated with a convertible and compact refrigeration system 501 to cool food held in food pans 930.

Abstract: A cold tray for a container may have an interior. The cold tray may include a cold tray housing mountable within the container interior. A refrigerant may be mounted to the cold tray housing. An air flow source may be fluidly connectable to the cold tray housing and may draw air from the container interior into the cold tray housing such that the air passes over the refrigerant and is discharged back into the container interior.

Abstract: A machine for producing and dispensing products such as ice cream, frozen beverages or granita comprises a transparent product container which is provided with a tap for dispensing the product and which contains an evaporator of a refrigerating circuit or cooling the product in the container and a mixer element for stirring the product. The machine comprises means for diffusing a thin stream of moving air over the outer walls of the container. These air diffusion means may comprise a fan which emits an air flow inside a diffuser element which is arranged above the container and which defines a mouth around the top of the container and blows downwards the thin stream of air onto the outer walls of the container. The diffuser element may be advantageously formed in the lid the container.

Abstract: An inverter device includes a plurality of switching circuits in which first switching elements including Si semiconductors and second switching element including WBG semiconductors having ON resistance smaller than that of the first switching elements and having switching speed higher than that of the first switching elements are connected in parallel. The inverter device includes a converting circuit that converts a direct-current voltage into a desired alternating-current voltage and a driving unit that generates a plurality of driving signals for respectively turning on and off the switching circuits. The inverter device includes, for each of the switching circuits, a gate circuit that, based on the driving signals, turns on the second switching element later than the first switching element and turns off the first switching element later than the second switching element.

Abstract: A fluid compressor for compressing fluids and a method for operating the same are provided. The fluid compressor includes a compression chamber with an inlet for the fluid and an outlet for compressed fluid. The fluid compressor further includes a piston disposed within the compression chamber. The fluid compressor includes a driving system that includes piezoelectric actuator configured to cause displacement of the piston in the compression chamber. The driving system further includes an amplifying element that is coupled to the piezoelectric actuator in the direction of the movement of the piston to enhance the displacement of the piston caused by the piezoelectric actuator. One end of the amplifying element is fixed to a base of the fluid compressor and the piezoelectric actuator is disposed between the amplifying element and the piston.

Abstract: A countertop rapid cooler is disclosed for rapidly cooling food, drink, and other items using at least convection cooling. the cooler includes: a thermally insulated enclosure with a door and sized to fit on a countertop; a fan; and a convective heat exchanger for cooling air blown by the fan toward an item within the enclosure. The convective heat exchanger is capable of receiving coolant from a neighboring refrigeration unit (such as a refrigerator), and returning the coolant to the neighboring unit after use. In some embodiments, expanded coolant can be delivered from the neighboring unit's expansion valve. In other embodiments, unexpanded coolant can be delivered from the neighboring unit, to be expanded by a separate expansion valve located within the countertop rapid cooler. By not including its own compressor or condenser, the countertop rapid cooler is lighter, and uses less space, than currently available rapid cooling devices.

Abstract: An air conditioner includes a case provided with openings, a heat exchanger disposed in the case, one or more fans disposed in the case, and a variation unit that is movably disposed around the fans to vary air inlet and outlet directions.

Abstract: A freezer apparatus for a product includes a chamber; a mechanical refrigeration assembly having a portion thereof disposed within the chamber for reducing a temperature of the product; and a cryogen injection assembly disposed within the chamber for reducing the temperature of the product and operatively associated with the mechanical refrigeration assembly to provide power to move a flow of cryogen refrigerant through the mechanical refrigeration assembly.

Abstract: A heat pump air-conditioning system includes a four-way valve provided with a first opening, a second opening, a third opening and a fourth opening communicated with each other. The first opening, a compressor, a first heat exchanger, a first expansion device and the second opening are sequentially connected in series. The third opening, a second heat exchanger, a second expansion device, a third heat exchanger and the fourth opening are sequentially connected in series. A first bypass valve is connected in parallel with the first expansion device and is connected between the first heat exchanger and the second opening. A second bypass valve is connected in parallel with the second expansion device and the third heat exchanger and is connected between the third heat exchanger and the fourth opening. A liquid supply system is connected to the first heat exchanger.

Abstract: A modular expandable cooling system including a rack sized for receiving multiple modular cooling units having a ram air inlet connected to a ram air source. The system also includes a modular cooling unit having a housing for receipt in the rack, a ram air inlet and outlet, and a refrigerant inlet and outlet. The system includes a condenser mounted in the housing in fluid communication with the ram air inlet, a compressor mounted in the housing downstream from the condenser, an accumulator in fluid communication with the compressor inlet.