Abstract: Provided in the present application are an air duct system and a refrigeration appliance provided having the same. The air duct system comprises a drying system and a cooling system arranged in cooperation with each other, the cooling system has an evaporator and an air return port and an air supply port arranged on the two sides of the evaporator, and the drying system is disposed between the air return port and the evaporator, and comprises an air compressor and an air storage tank connected to each other; the air discharged by the air return port passes in sequence through the air compressor and the air storage tank and then flows to the evaporator, so that the air passing through the evaporator is dried, avoiding the problems of frosting and low efficiency.

Abstract: A thermal management system includes a circulation channel that connects a motor cooler, outside air heat exchanger, and a heater, a switching valve, and a controller. In a heating mode of operating the heater, the controller sets the switching valve in the first valve position when the motor temperature is lower than a motor temperature threshold value, and sets the switching valve in the second valve position when the motor temperature is higher than the motor temperature threshold value. When a load or a load predicted value of the motor exceeds a load threshold value, the controller holds the switching valve in the second valve position during a predetermined holding time.

Abstract: A blower includes a lower case provided with an inlet; a first tower that extends upward from the lower case and is formed with a first outlet; a second tower that extends upward from the lower case and is provided with a second outlet; a fan that is rotatably disposed on the lower case; a first air flow converter that is disposed at the first tower; and a second air flow converter that is disposed at the second tower, each of the first air flow converter and the second air flow converter including: a guide board that is disposed inside the first tower or the second tower or protrudes through a first wall or a second wall; an upper gear that rotates in engagement with an upper portion of the guide board; a lower gear that rotates in engagement with a lower portion of the guide board; a shaft that is connected to each of the upper gear and the lower gear to rotate together; and a motor that is connected to one of the upper gear and the lower gear to provide a driving force.

Abstract: A single-package air conditioning appliance includes a housing defining an outdoor portion and an indoor portion. An outdoor heat exchanger assembly is disposed in the outdoor portion. The outdoor heat exchanger assembly includes an outdoor heat exchanger and an outdoor fan. An indoor heat exchanger assembly is disposed in the indoor portion. The indoor heat exchanger assembly includes an indoor heat exchanger and an indoor fan. A compressor is in fluid communication with the outdoor heat exchanger and the indoor heat exchanger to circulate a refrigerant between the outdoor heat exchanger and the indoor heat exchanger. The single-package air conditioner unit also includes a make-up air module mounted on an external surface of the housing.

Abstract: A refrigerator appliance may include a cabinet, a door, an image module, and a drawer assembly. The cabinet may include an inner liner defining a chilled chamber. The door may be rotatably hinged to the cabinet to provide selective access to the chilled chamber. The image module may be mounted to the cabinet and have a field of view within the chilled chamber. The drawer assembly may be disposed within the field of view of the image module. The drawer assembly may include an assembly frame supported on the inner liner, a slidable drawer movably attached to the assembly frame to move relative thereto, and a plurality of weight sensors mounted on the assembly frame apart from the slidable drawer to detect a weight of one or more objects received on the drawer assembly.

Abstract: Provided is a negative pressure release port that can prevent freezing in a channel. This negative pressure release port comprises: a cylindrical member made of a pipe in which a fluid can pass through and a base; a heating element disposed on one end inside the pipe; a retaining member that retains the heating element; a rib that connects an inner wall face of the pipe and the retaining member; and a check valve that is provided inside the base provided more toward the other end than the heating element, that allows air passing through the interior of the base to flow from the other end to the one end, and prevents flow from the one end to the other end.

Abstract: Systems and methods for controlling conditions in an enclosed space can include an integral make-up air system that can be arranged in the interior of the housing for an air conditioning system that uses scavenger air in an air-to-air heat exchanger (AAHX) to condition process air from an enclosed space. The make-up air system can take replenishment air from outside the air conditioning system and deliver it into the process air stream. The make-up air system can include at least one heating or cooling device to condition the replenishment air before the replenishment air mixes with the process air. In an example, the make-up air system can include a DX coil to selectively cool and dehumidify the replenishment air. The make-up air system can include a humidifier arranged in the flow path of process air between the process air inlet and the AAHX to selectively add humidity to the process air.

Abstract: A drive mechanism is configured to drive a movable member of an air conditioner. The drive mechanism includes a motor, a pinion secured to a rotating shaft of the motor, a rack meshing with the pinion, and a guide. The rack has a driven portion directly or indirectly linked to the movable member. The guide is arranged to guide the rack so that the driven portion can travel in a curved path. The guide has a tube part through which the rack passes.

Abstract: A transportation cargo refrigeration system includes a refrigeration unit to provide a flow of supply air for a refrigerated cargo container. A refrigeration system outlet allows the flow of supply air into the cargo container. A mixing chamber is located between the refrigeration unit and the refrigeration system outlet for mixing of the flow of supply air thereby reducing supply air temperature fluctuation at the refrigeration system outlet. A method of operating a refrigeration system for a refrigerated cargo container includes flowing supply air through a refrigeration unit thereby reducing a temperature of the supply air. The supply air is directed into a mixing chamber and mixed in the mixing chamber until a selected supply air temperature is achieved. The supply air is directed through a refrigeration system outlet and into an interior of a cargo container.

Abstract: An air conditioning apparatus has, a first domed door comprising a first pivot and a first sealing surface, and a second domed door comprising a second pivot and a second sealing surface, wherein, said second pivot is positioned different from said second pivot. With the above structure, the radial gap between the first sealing surface and the second sealing surface is varied when at least one of the two domed doors is moved. Accordingly, the air conditioning apparatus described above does not have to set the constant small radial gap or constant wide radial gap for the sake of reducing unintentional air leaking or preventing said friction.

Abstract: An outdoor unit for an air conditioner according to an exemplary embodiment of the disclosure, comprising: a case forming shape and having a suction port suctioning outside air and a discharge port discharging the suctioned air; a heat exchanger accommodated inside the case; a fan that is accommodated inside the case and forcibly circulate air; and a louver assembly revolvably mounted in the case so as to selectively open and close the discharge port.

Abstract: The present invention relates generally to an external condenser and light assembly and, more particularly, to an improved external air conditioning condenser and housing that is designed to additionally serve as a light assembly for an emergency vehicle. The condenser housing is mounted to the exterior of the emergency vehicle, which improves the performance of the emergency vehicle's air-conditioning system. The design of the condenser housing also allows it to serve as a light assembly on which emergency vehicle lights are mounted. The condenser housing and light assembly structure thereby provides for proper air conditioning functionality without occupying space on the exterior of the vehicle that would more preferably be occupied by emergency lighting.

Abstract: Embodiments of the invention provide an air conditioning unit that includes an intake vent, an exhaust vent, a return vent, a supply vent, and an economizer assembly including a sliding damper and a partition. The partition includes an opening through which air can flow from the return vent to the supply vent during a mechanical cooling mode. The sliding damper includes a vertical panel capable of moving vertically to close the intake vent and the exhaust vent during the mechanical cooling mode and an angled panel capable of closing the opening in the partition in order to enter an economizer mode.

Abstract: Refrigerant systems are provided with selectively operable components that allow variation in the capacity provided by the refrigerant system to achieve desired temperature and humidity levels. A reheat circuit is provided and an economizer circuit may also be added to the system. Typically, the reheat and economizer functions each provide a step change in the humidity control. A compressor having a variable speed drive is utilized. By providing the reheat/economizer functions along with the variable speed compressor, continuously adjustable humidity control is achieved.

Abstract: An indoor unit of an air conditioner includes an indoor unit casing, a front panel, and a moving mechanism. A first suction port is provided at a front surface of the indoor unit casing. The front panel is provided at the front surface of the indoor unit casing, and opens and closes the first suction port. The moving mechanism moves the front panel to: a closed state, in which the front panel closes the first suction port; a first open state, in which the front panel moves frontward from the closed state and opens the first suction port; and a second open state, in which the front panel moves further frontward from the first state and more widely opens the first suction port.

Abstract: The present invention relates to a cool air supply structure of a storage receptacle for a refrigerator. The present invention comprises one or more box casings detachably installed in a refrigerating chamber, each box casing having a mounting space and a channel through which cool air flows, the cool air being supplied from a cool air supply source through a cool air supply port formed in a side surface of the refrigerating chamber; and one or more storage receptacles, each storage receptacle being withdrawably installed in the mounting space, wherein food accommodated in an accommodation space provided in the storage receptacle is indirectly cooled by the cool air that flows through the channel. According to the present invention, there is an advantageous effect in that the food accommodated in a plurality of storage receptacles can be stored to be fresher by indirectly cooling the food and simultaneously the supply of cool air can be controlled depending on the use or not of the storage receptacles.

Abstract: An indoor unit of an air conditioner includes an indoor unit casing having a first suction port, a panel, a moving mechanism, and a control unit. The panel opens the first suction port by moving so that the panel is spaced apart from the indoor unit casing, and closes the first suction port by moving so that the panel is proximate to the indoor unit casing. The moving mechanism moves the panel so that the first suction port is opened to a desired degree of opening. The control unit controls the moving mechanism. Furthermore, the control unit is capable of modifying the degree of opening of the first suction port to a desired degree of opening.

Abstract: A refrigerator including a housing with a chassis and a door enclosing a chilled interior; and a pressure equalization valve extending through a wall of the housing thereby facilitating an inflow of air from the surroundings into the interior and thereby blocking an outflow of air from the interior into the surroundings, the refrigerator comprising, a wall having a throughbore formed therein in a parallel flow arrangement with the pressure equalization valve, through which air can pass in two directions, wherein the flow of air is less than that of the airflow through the pressure equalization valve in the throughflow direction and greater than that of the air leakage value of the pressure equalization valve in the blocked direction.

Abstract: A pressure equalizing device for refrigerators, having a chamber, a door on the front wall of the chamber, an evaporator, and an evaporator defrost heater, is provided. The pressure equalizing device includes a pressure relief valve, an installation hole, and a deicing device for the pressure relief valve. The pressure relief valve connects the inside and outside of the chamber, and includes an inner end and an outer end. The installation hole is perforated on one of the walls of the chamber. The pressure relief valve equalizes the pressure inside and outside of the chamber to facilitate the opening of the door. The pressure relief valve includes an operation switch, and the operation switch is activated by the opening of the door. The pressure relief valve is disposed over deicing device, and the deicing device melts ice formed on the inner end of the pressure relief valve.

Abstract: A cooling system for removing heat from the layers of a three-dimensional object built in a layerwise manner from a build material in a solid freeform fabrication apparatus. The cooling system provides an air duct that delivers a uniform sheet of air flow over the layers of the three-dimensional object while it is built. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.

Abstract: A refrigerator includes a refrigerating compartment configured to preserve food, the compartment including a plurality of walls forming a cavity, a door coupled to the compartment configured to cover the cavity when in a closed position, and a passageway positioned on at least one of the walls and the door such that air within the cavity is in flow communication with air outside the cavity when the door is in the closed position.

Abstract: Closed loop cooling is provided by means of a mechanical air conditioner combined with an air-to-air heat exchanger. Three basic modes of operation maximize cooling while minimizing energy consumption, depending on ambient air temperature. In the first mode the air-to-air heat exchanger or economizer provides all required cooling to a closed circuit enclosure air stream, transferring heat to the cold ambient air stream. In the second mode the air-to-air heat exchanger precools the closed air circuit stream using moderate temperature ambient air, in the same manner as in the first mode, followed by further removal of heat by passing enclosure air through refrigeration condenser coils. The heat taken in at the evaporator is transferred to the ambient air stream as it passes through a condenser coil after passing through the heat exchanger.

Abstract: To allow for easier opening of a refrigerator door, a pressure relief system is provided to relieve a pressure differential or vacuum that develops due to operation and use of the refrigerator. The pressure relief system includes a check valve having an orifice with a flexible membrane. An insulation portion of the pressure relief valve, which is foamed into the cabinet, spans from the fresh food compartment to a top of the cabinet and directs air towards the rear cabinet liner for moisture condensing measures. The pressure relief assembly also includes an adapter which mounts to the cabinet top and provides a mounting surface for an air return assembly.

Abstract: A vacuum-breaking valve for refrigeration appliances, comprising: a tubular body (10) made of a thermally conductive material and mounted through one of the walls of a cabinet (G) of the refrigeration appliance; a valve seat (30) mounted to the tubular body (10); a sealing means (40) constantly biased towards a closed position, in which it is seated on said valve seat (30), and movable towards an open position when the pressure inside cabinet (G) is lower than the pressure outside said cabinet (G); and a heat collector (20) provided with a thermal radiation collecting surface (21) mounted to the tubular body (10) and facing a heat source external to cabinet (G).

Abstract: An air filter unit for use in an air conditioner having an outside air duct through which air passes through a divider wall separating the outdoor section and indoor section of the air conditioner. The air filter unit includes a filter frame containing an air filter and a connector for removably supporting the frame upon the divider wall so that the air filter covers substantially all of the duct entrance. A hinge is located along one side edge of the frame and a door is mounted upon the hinge between an open position wherein outside air can move through the filter into the duct and a closed position wherein outside air is prevented from moving through the filter into the duct. Controls for selectively positioning the door are provided inside the front cover of the unit.

Abstract: There are provided a first controller (100) which has an operation button and a button holder that are provided movably between different mode switching operation positions in order to switch and operate an outside air intake mode and an inside air circulating mode for circulating the inside air, and a second controller (200) having a first operation knob and a shaft that are provided in order to switch and operate plural air conditioning modes. A cable (K) is provided between the first controller and the second controller, which changes, when switching between the undefrosting mode and the defrosting mode by the first operation knob and the shaft is performed, a mode switching operation position of the operation button and button holder according to the above switching operation.

Abstract: An air outlet opening apparatus for air conditioners is provided. The air outlet opening apparatus includes a shutter for selectively opening and closing the air outlet formed on an air conditioner body. A pair of support plates is mounted beside the shutter to guide the elevation and lowering of the shutter. The air outlet opening apparatus further includes elevation means for selectively elevating and lowering the shutter. The elevation means includes a pair of elevation members positioned to be slid on the support plates, a drive motor for generating power to move the elevation members, and power transmission means for converting the rotating movement of the drive motor to the simultaneous linear movements of the elevation members.

Abstract: An electricity generator powered by air conditioner exhaust having a wind turbine and a bracket to hold the wind turbine in a relatively fixed position, to an air conditioner exhaust. The wind turbine has a propeller with two or more blades, a shaft and a generator. The bracket holds the wind turbine so the blades are turned by exhaust air from the air conditioner. The bracket can be a shroud. The invention includes the method of generating electricity from air conditioning exhaust by holding a wind turbine in a relatively fixed proximity to an air conditioning exhaust port.

Abstract: Disclosed herewith is an air outlet opening apparatus for air conditioners. The air outlet opening apparatus includes a shutter for selectively opening and closing the air outlet formed on an air conditioner body. A pair of support plates is mounted beside the shutter to guide the elevation and lowering of the shutter. The air outlet opening apparatus further includes elevation means for selectively elevating and lowering the shutter. The elevation means includes a pair of elevation members positioned to be slid on the support plates, a drive motor for generating power to move the elevation members, and power transmission means for converting the rotating movement of said drive motor to the simultaneous linear movements of said elevation members.

Abstract: During a heating mode, higher-pressure refrigerant having passed through a condenser within an air-conditioning duct is divided into two portions. One portion is depressurized by a first depressurizing device to an intermediate pressure. Heat exchange is performed in a refrigerant-refrigerant heat exchanger between the other portion of the higher-pressure refrigerant having just passed through the condenser and the intermediate-pressure refrigerant having just passed through the first depressurizing device. During the heating mode, the higher-pressure refrigerant cooled in refrigerant-refrigerant heat exchanger 23 is supercooled by a supercooling device within the air-conditioning duct. Then, the supercooled higher-pressure refrigerant is depressurized by a second depressurizing device to a lower pressure, thereby vaporized in an outdoor heat-exchanger.

Abstract: The combined air exchange and air conditioning unit is used for conditioning air from a conditioned space. The unit comprises an exhaust air chamber, a return air chamber, a supply air chamber, and a fresh air chamber. A supply blower is used for drawing air from inside the supply air chamber to the outside and an exhaust blower is used for drawing air from inside the exhaust air chamber. A central plate damper is provided for regulating air transfers between the chambers. The damper plate is movable within a position range defined between two extreme positions, the first position allowing a connection of the return air chamber with the supply air chamber and a connection of the fresh air chamber with the exhaust air chamber, the second extreme position allowing a connection of the return air chamber with the exhaust air chamber and a connection of the fresh air chamber with the supply air chamber.

Abstract: An air conditioning apparatus for a vehicle includes an air conditioning case for forming an air passage through which air is blown into a passenger compartment. In the air conditioning apparatus, during a cooling mode for cooling a passenger compartment, an inside/outside air introduction mode is switched from an inside/outside air-mixing mode where both inside air and outside air are introduced into the air conditioning case to an entire outside air mode where only outside air is introduced into the air conditioning case, when an engine of the vehicle is stopped and the cooling load is smaller than a predetermined cooling load. Therefore, air-suction noise from an inside air introduction port is not caused, and the air-suction noise is not noted by a passenger in the passenger compartment even when the engine is stopped. Thus, noise of the air conditioning apparatus in the passenger compartment can be reduced.

Abstract: A vacuum release valve for use in a refrigerated compartment such as a domestic refrigerator which allows a small amount of outside air to enter the refrigerated compartment to prevent a vacuum from forming in the refrigerated compartment caused by warm air entering the compartment during door access into the compartment and then contracting by being cooled. The vacuum release valve includes a tubular valve body which penetrates through a floor of the compartment and a cap which is loosely captured to an end of the tubular body and which normally closes the tubular body but which can be lifted from the tubular body by a vacuum formed within the compartment.

Abstract: A dual channel motor vehicle ventilation apparatus provides independent air temperature control. The apparatus comprises a housing having at least one air inlet and a first and second air outlet. First and second fluid communication channels are provided within the housing and defined air passages extending between the at least one air inlet and the first and second air outlets. First and second blowers are associated with the first and second air outlets, respectively, and serve to suction air from the air inlet, through the first and second fluid communication channels, and expel the air through the respective air outlet. A heating coil is included within the housing and disposed to project at least partially into the first and second fluid communication channels. First and second flow valves are disposed within the first and second fluid communication channels and are independently operable to direct a portion of the air flowing through each fluid communication channel across the heating coil.

Abstract: The air circulation system includes a fan unit for discharging filtered ambient air below a predetermined temperature into a walk-in cooler through a damper and exhausting warm air out of the walk-in cooler through a damper by using a discharge fan with the supply fan and discharge fan being controlled by an accustat. The fans, inlet filter and damper are incorporated into a generally rectangular housing that can be easily installed in a wall of a walk-in cooler or other similar enclosure with the air supply being ducted if desired.

Abstract: A separable air conditioner includes a blow fan for intaking and discharging room air, a heat-exchanger for cooling intaking air and an air exhaust and water drain apparatus mounted below but adjacent to the heat-exchanger to force the fan to blow air across its lower portion. The air exhaust and water drain apparatus includes a pan assembly extending overall width of the heat-exchanger for collecting condensing water from the heat-exchanger.

Abstract: According to this invention, cold is conveyed into a cooling chamber by means of convectors, and fresh air of a higher temperature is supplied in a controlled manner so that the temperature decreases. To avoid power loss due to the quantity of heat supplied, the displaced cold air is channeled towards a heat exchanger in the condenser of the cooling machine. Since the fresh air which circulates is always above 0.degree. C., the humidity content of the fresh air supplied can be controlled and be filtered to remove odors.

Abstract: An air conditioning apparatus is provided with an exhaust feature for exhausting air from the living enclosure. The air conditioning apparatus includes an evaporator blower for moving air from the living enclosure through an evaporator coil and back to the living enclosure. The evaporator blower includes a blower housing which includes an air inlet and an air outlet, and an exhaust opening is provided in the blower housing. An exhaust door is pivotally mounted on the blower housing and is movable between a first position in which the exhaust door closes the exhaust opening in the blower housing and a second position in which the exhaust door closes the air outlet of the blower housing and the exhaust opening is opened. When the door is in the second position, air is exhausted from the living enclosure through the exhaust opening.

Abstract: An economizer has a single sliding door which leads to the indoor section from both the outdoor air inlet and the return air inlet, with the two inlets being separated by a divider baffle. The sliding plate is movable from its fully closed position, wherein the indoor section is shut off from the outdoor air inlet, to a fully opened position, wherein all of the air passing to the indoor section is coming from the outdoor air inlet and the opening between the indoor section and the return air inlet is closed. The sliding plate can also be placed in intermediate positions wherein a mixture of return air and outdoor air is provided to the indoor section. The economizer is so designed that it may be applied to either a down discharge or a side discharge unit without any change to the economizer structure itself.

Abstract: A ventilator for a refrigerator which comprises a first frame inserted into a ventilation hole provided in a wall panel of a refrigerator, a second frame inserted into the ventilation hole from the outside of the refrigerator, and a mounting base provided with a valve plate and a valve body. The first and second frames are coupled together with their respective extension portions fitted together. The orientation of mounting of the mounting base in the first frame is varied for using the ventilator either for discharge or for intake of air.

Abstract: An apparatus for treating air having a housing with a passageway extending therethrough for interconnecting a source of the air and a space to be conditioned; two air movers mounted in the housing for creating two reduced pressure zones internally of the chamber; a pivotally positionable damper mounted in the passageway for selectively directing air received from the source along predetermined paths of travel internally of the chamber; and a counter-flow heat exchanger and cooling pad mounted in predetermined positions in the path of travel extending to the space to be conditioned to absorb heat energy and evaporatively cool the air passing to the space to be conditioned.

Abstract: A door jamb for a cold storage room is provided with a tranverse passage for passage of air from the exterior into the interior of the cold storage room. A thin metal flap valve, specifically of stainless steel, is placed at the exterior end of the passage, seated on a flat plate. An electric heater in the passage prevents the valve from being immobilized in the closed position due to frozen condensation.

Abstract: A method for air conditioning for vehicles comprising a step of detecting a temperature of a passenger compartment of a vehicle, an atmospheric temperature and a preset temperature in the initial period of air conditioning, a step of judging the results of comparisons between said temperatures and a step of switching between air conditioning by the circulation of inside air and air conditioning by the introduction of outside air.

Abstract: The invention pertains to apparatus for utilizing atmospheric air to cool enclosures, such as refrigerated coolers, computer rooms, and other spaces requiring temperature regulation of cool air. A panel mounted within the enclosure to be cooled includes an atmospheric air grill inlet communicating through an air duct with an air supply fan located within atmospheric air for forcing cool atmospheric air through the grill. The panel also includes an interior exhaust fan within the enclosure communicating with an air duct for exhausting enclosure air to atmosphere, and temperature sensing control means for both fans sense the temperature within the enclosure and that of the atmospheric air to simultaneously actuate the air supply and exhaust fans which are of substantially equal air flow capacity wherein the air pressure within the enclosure remains substantially constant while supplying cool atmospheric air thereto.

Abstract: Apparatus and method for preconditioning makeup air supplied to an air conditioning unit. An add-on preconditioning unit having a separate vapor compression refrigeration circuit is disclosed for heating or cooling makeup air supplied to an air conditioning system.

Abstract: Equipment for cooling a plurality of containers, each of said containers characterized by a refrigeration unit in association therewith, said equipment being responsive to the temperature of the environment where said units are located and comprising:duct means for collecting cooled air from said containers and returning it to said containers;blower means disposed in said duct means for recycling the collected air to said containers;auxiliary cooling means disposed in said duct means downstream from said blower means;temperature responsive means for sensing the temperature of the environment; andcircuit means coupled with said temperature responsive means for deactivating said refrigeration units in response to a predetermined temperature drop and activating said auxiliary cooling means and said blower means.

Abstract: Apparatus for use with refrigerators, particularly of the walk-in cooler type, wherein, when available, low temperature atmospheric air is drawn into the cooler for cooling purposes, rather than utilizing the usual compressor type refrigeration system. The apparatus is mounted within the space to be cooled and utilizes temperature sensing means for automatic operation, and in an embodiment, employs an electric storage battery which would permit extended operation in the event of a power failure.

Abstract: Apparatus for utilizing ambient air to provide supplemental cooling of a refrigerated enclosure in combination with a mechanical refrigeration system. Initial pull down of the temperature in a refrigerated enclosure to an intermediate temperature level is accomplished by a mechanical refrigeration system, or by an ambient air system in combination therewith. Cooling of the enclosure to a predetermined, low temperature level is achieved by actuating fans in response to the sensing of an outdoor temperature at or below a predetermined temperature level to draw relatively cool ambient air into the enclosure.

Abstract: The present invention is directed to a method and apparatus for heat generation or heat exchange in which a primary medium emits heat while passing through an evaporator in which there is a heat-transfer medium which thereby evaporates or boils and thereby increases the pressure of the heat-transfer medium. Once the pressure has increased, it is transferred to a condensor where a secondary medium is heated from the condensation of the heat-transfer medium. The method and device according to the present invention increase the efficiency, particularly when the primary medium is at a low temperature, by intensifying the heat at least in a portion of the evaporator.

Abstract: An auxiliary method and apparatus therefor for cooling refrigerated enclosures equipped with a primary refrigerating system, includes an intake opening mounted in fluid communication with a source of cold air and a blower having its inlet connected in fluid communication with the intake opening to draw cold air from the source of cold air, such as cold outside ambient air. The blower is mounted within a heated enclosure to prevent the blower housing from collecting moisture therewithin. A discharge opening is provided in the walls surrounding the refrigerated enclosure and a conduit connects in fluid communication the outlet of the blower and the discharge opening for supplying the cold air to the interior of the refrigerated enclosure when the blower is activated.