Abstract: An air-conditioning device includes a first circuit and a second circuit. Air supplied to an interior chamber of a motor vehicle flows through an air pathway. A first heat exchanger is disposed in the air pathway where the air flowing through the air pathway is heatable by the first heat exchanger. A second heat exchanger is disposed downstream of the first heat exchanger where the air flowing through the air pathway is heatable by the second heat exchanger. A valve device has a first switching state in which the first heat exchanger is disposed in the first circuit and the second heat exchanger is disposed in the second circuit and a second switching state in which the first heat exchanger is disposed in the second circuit and the second heat exchanger is disposed in the first circuit.

Abstract: A refrigerator appliance includes a casing forming a receiving space, the casing defining a contact surface that contacts a door of the refrigerator appliance, and a sealed refrigerant system provided within the casing. The sealed refrigerant system includes a hot fluid portion positioned adjacent to the contact surface. The hot fluid portion includes a connector forming a planar heat transfer surface to transfer heat from the hot fluid portion to the contact surface.

Abstract: An evaporator unit includes an evaporator comprising an evaporation pipe and a plurality of heat exchange fins, through which the evaporation pipe penetrates, and a defrost heater mounted below the evaporator. The defrost heater may include a heating line and a heating pipe in which the heating line is accommodated, and the heating pipe may have a plurality of irregularities extending in a longitudinal direction of the heating pipe.

Abstract: A system includes a flash tank, a first load, a second load, a first compressor, a second compressor, a first valve, and a second valve. The flash tank stores a refrigerant. The first and second loads use the refrigerant to cool first and second spaces. The first compressor compresses the refrigerant from the first load during a first mode of operation and a flash gas from the flash tank during a second mode of operation. The second compressor compresses a mixture of the refrigerant from the first and second loads during the first mode of operation. The first valve directs the flash gas from the flash tank to the first compressor during the second mode of operation. The second valve directs the compressed flash gas from the first compressor to the first load during the second mode of operation to defrost the first load.

Abstract: A drainage assembly for an insulated structure includes a flexible body that has a plurality of flexures and defines an opening and notches that extend radially from the opening. A first drainage tube extends through the opening and includes receiving flanges disposed within the notches defined by the flexible body. A second drainage tube is in fluid communication with the first drainage tube. The second drainage tube includes engagement flanges disposed within the receiving flanges of the first drainage tube.

Abstract: A refrigerator of the present invention comprises: an inner case forming a storage compartment; a cold air duct guiding the flow of air within the storage compartment and forming a heat exchange space with the inner case; an evaporator disposed in the heat exchange space between the inner case and the cold air duct; a bypass passage disposed in the cold air duct so as to allow the flow of air to bypass the evaporator; a sensor disposed in the bypass flow channel and comprising a sensor housing, a sensor PCB received in the sensor housing, a heating element installed on the sensor PCB so as to generate heat when an electric current is applied thereto, a temperature element for sensing the temperature of the heating element, and a molding material with which the sensor housing is filled; a drfrosting means for removing frost formed on the surface of the evaporator; and a control unit for controlling the defrosting means on the basis of the value output from the sensor.

Abstract: Provided is a cooling device capable of surely stopping the operation of a compressor when stopping the operation of the compressor is required. A cooling device comprises: a motor for driving a compressor that constitutes a refrigerant circuit for cooling a cooling room (R); and a first relay and a second relay that are arranged in series on an electric circuit for supplying electric power to the motor.

Abstract: A refrigerator appliance includes a cabinet having a liner spaced apart from a wrapper. A trim breaker extends between the liner and the wrapper. A trim adapter assembly is coupled with the trim breaker and includes an adapter member and a corner member. The adapter member includes a plurality of engagement arms. A cover is configured to be engaged with the plurality of engagement arms to couple the cover with the trim adapter assembly.

Abstract: The invention is provided with a housing which has an inner space open in a first direction, a partition body which divides the inlet of the inner space into a plurality of openings arranged next to each other in a second direction perpendicular to the first direction, a door which is provided to each of the openings and which closes the opening from the first direction side, a first vacuum heat insulating material which is disposed inside the partition body, and a second vacuum heat insulating material which is disposed inside the door. The first vacuum heat insulating material and the second vacuum heat insulating material are arranged so as to overlap each other when viewed from the first direction side or from the second direction side.

Abstract: An appliance includes a metallic outer wrapper having sidewalls, a wrapper backwall and a machine wall. At least one metallic inner liner has liner walls and a liner backwall, wherein the metallic outer wrapper and the at least one metallic inner liner are coupled together at a trim breaker to define a structural cabinet having a hermetically sealed interior cavity defined between the metallic outer wrapper and the at least one metallic inner liner. The trim breaker defines a front face of the structural cabinet. At least one trim breaker conduit extends through the wrapper and liner backwalls wherein the trim breaker conduit defines a conduit through the structural cabinet, and wherein the structural cabinet is hermetically sealed at the trim breaker conduit.

Abstract: A cooling device, particularly a household refrigerator, has a housing defining a storage space. A door assembly attached to the housing enables access to the storage space. A unit that emits heat to its surrounding is disposed on the cooling device. The heated air around the unit is discharged through an air outlet. An air guiding element directs the discharged air upwardly so as to flow along the door assembly. The air guiding element is provided on the door assembly.

Abstract: A household refrigeration appliance has a housing in which there is embodied a receiving space for foodstuffs, a first door and a second door separate therefrom. The doors closing a front-side receiving opening of the receiving space to the front. A door stop bar is disposed externally to the doors which is arranged in the receiving opening and is connected by a first end to a first boundary wall and by a second end to a second boundary wall. Wherein in the closed state the doors abut against the door stop bar on the front side, and have a frame heating which is arranged on the door stop bar for the purpose of heating the door stop bar. A heating line of the frame heating is arranged behind a front panel of the door stop bar and is thermally coupled to the front panel by the heat-conducting transmission medium.

Abstract: A condensate recovery system is adapted for use with an existing drain. A condensate collection vessel, which may be funnel-shaped, is inserted into the existing drain includes an upper opening to receive condensate and an outer wall. At least a portion of the outer wall is spaced apart from the inner wall of the drain such that if the collection vessel overflows, the excess liquid flows into the drain. A float switch is operative to detect when the vessel has been filled with condensate, and a pump is operative to drain the vessel in response to the float switch detecting that the vessel has been filled with condensate. A time delay relay (TDR) may be activated for a predetermined period of time before shutting off the pump. The output of the pump may be used to replenish an evaporative cooling tower or other purposes.

Abstract: An HVAC air inlet housing for a vehicle includes an air inlet housing having a top portion and a bottom portion. A fresh air duct, to convey fresh air from an air inlet to a blower, is defined by the air inlet housing. A water inlet port, to connect to an evaporator drain port via a hose, is defined in the bottom portion. The hose is to convey water from the evaporator drain port to the water inlet port. A water tunnel is defined by the air inlet housing to convey water from the water inlet port to a sluice defined in the bottom portion. The sluice is to convey water from the water tunnel to a sump defined in the bottom portion. A sump drain port is defined in the air inlet housing bottom portion in fluid communication with the sump to drain water from the sump.

Abstract: A refrigerator appliance includes a liner positioned within a cabinet and a mullion positioned within the liner to define a fresh food chamber and a freezer chamber. One or more doors provide selective access to these chambers and are covered by an appearance panel, such as a cabinetry panel. An air pocket is defined between the appearance panel and the liner or mullion, and a heat transfer feature is positioned within the air pocket for increasing a surface area for thermal energy transfer, thereby reducing cool spots and potential condensation within the air pocket or on surfaces defining the air pocket.

Abstract: A heat pump system includes a refrigerant circuit, at least one compressor, an evaporator, and a controller programmed to defrost the evaporator in a defrost mode, wherein in the defrost mode the controller is programmed to monitor the evaporator to detect frost creation thereon, and reduce the speed of the at least one compressor and/or reduce the number of some, but not all operating compressors of the at least one compressor, if frost creation is detected on the evaporator. In some embodiments, the controller is programmed to defrost the evaporator in a second defrost mode. In the second defrost mode the controller is programmed to monitor the evaporator to detect frost creation thereon, turn off the at least one compressor when frost is detected on the evaporator, and operate a fan to force ambient air over the evaporator to defrost the evaporator.

Abstract: A vehicle air conditioner includes: a condenser that internally circulates a high-temperature and high-pressure refrigerant which is discharged from a compressor and that heats air passing around the condenser; an evaporator that internally circulates a low-temperature and low-pressure refrigerant and that absorbs heat from the air passing around the evaporator; and a switching portion that switches flows of air in response to a heating time, a cooling time, and a dehumidifying-heating time of a vehicle. Also, the switching portion causes the air passing around the condenser to flow into a vehicle compartment during the heating time of the vehicle, causes the air passing around the evaporator to flow into the vehicle compartment during the cooling time of the vehicle and causes the air sequentially passing through the evaporator and the condenser to flow into the vehicle compartment during the dehumidifying-heating time of the vehicle.

Abstract: An outdoor unit includes a casing having a bottom panel formed in a rectangular shape in a planar view. The bottom panel includes a bottom portion constituting a lower face of the casing, and a rising portion rising from an outer peripheral edge of the bottom portion. A first holding part is provided to the rising portion on a side of one side face of the casing, and a second holding part is provided to the rising portion on a side of the other side face of the casing opposite to the side of the one side face.

Abstract: A vibration isolator suitable for isolating and/or dampening vibrations generated in a vibrating machinery component such as a motor or pump so as to minimise the unwanted effects (such as audible secondary sounds) of those vibrations. The isolator may be installed in a home appliance such as a laundry washing machine and may be a separate, unitary component installed between a motor/pump and the structure of the laundry machine or may be installed between a mounting bracket of the motor/pump and the laundry machine. Alternatively, the isolator may be integrally formed with a pump/motor mounting bracket, on upper and/or lower surfaces of a mounting flange. The isolator is preferably formed from a substantially incompressible material and in one preferred embodiment has a washer-like form with a central opening at least partially surrounded by a tubular ridge with a plurality of radial projections extending outwardly and/or inwardly from outer/inner surface(s) of the tubular ridge.

Abstract: A compressor is to be used in an air conditioner. The air conditioner includes the compressor, an evaporator, and a container. The evaporator generates condensed water during operation. The container receives the condensed water generated by the evaporator. The compressor includes a main body and a textile member that is capable of transferring moisture and is quick drying. The main body is to be disposed in the container. The textile member covers at least a part of the main body, and is to be used for absorbing the condensed water.

Abstract: A cold plate device and method for cooling electronic systems is provided including a generally flat thermally conductive body having a cooling channel within the thermally conductive body. A first cooling fluid travels through the cooling channel to remove heat from the conductive body. A vapor compression cycle system is coupled to the thermally conductive body such that the first cooling fluid removes heat from a second cooling fluid in a portion of the vapor compression cycle system.

Abstract: An outdoor unit (ODU) for an air conditioning system includes a baffle or other airflow direction control such that the cooling air from a condenser is at least partially directed over the compressor to provide air movement around the compressor to assist in thermal transfer of heat from the compressor. In one system, curvilinear frustoconical baffles are positioned in a conventional barrel-type outdoor unit to direct airflow toward the compressor before being discharged from the unit. When any of the ODUs is part of a heat pump system for providing heating and cooling, a retractable or movable air diverting system is employed when in the heating mode to prevent airflow through the condenser from reaching the compressor.

Abstract: An air conditioner includes a refrigerating cycle including a compressor (10) compressing a refrigerant, an indoor heat exchanger (30) exchanging heat between the refrigerant and indoor air, a pressure-reducing expansion valve (50) reducing pressure of and expanding the refrigerant, and an outdoor heat exchanger (60) exchanging heat between the refrigerant and outdoor air. The air conditioner further has a base plate (70) arranged below the outdoor heat exchanger (60) and having a drain outlet (71) formed at a position opposing an undersurface of the outdoor heat exchanger (60). Between the outdoor heat exchanger (60) and the base plate (70), a freeze prevention pipe (41) is disposed in a manner, in plan view, to at least partially pass inside the region of the drain outlet (71). The freeze prevention pipe (41) is connected between the outdoor heat exchanger (60) and the indoor heat exchanger (30).

Abstract: A vehicular air conditioning system capable of suppressing the power consumption of a refrigerating cycle is disclosed. The vehicular air conditioning system comprises a refrigerating cycle circuit comprising a compressor, an outside heat exchanger and an inside air conditioning heat exchanger annularly connected in order, and a device cooling circuit comprising a heating unit, an inside cooling heat exchanger, an intermediate heat exchanger and a pump being annularly connected, the intermediate heat exchanger being constructed such that one end of a piping of the cooling medium for air conditioning is connected to a liquid piping, the liquid piping providing connection between the outside heat exchanger and the inside air conditioning heat exchanger, and an opposite end of the piping of the cooling medium for air conditioning is connected to a suction port of the compressor.

Abstract: The present invention relates to a compact air conditioning system (1) for a vehicle cabin, comprising a compressor (14), a condenser (15), an evaporator (16), a control unit (19) and a ventilation assembly (18) with a single motor (24) capable of promoting easy installation and autonomous functioning for both cooling and heating the inside of a cabin.

Abstract: The invention relates to an air-conditioning loop for heating, ventilation, and/or air-conditioning equipment in which a coolant circulates. The loop including a compressor comprising a coolant outlet connected to a delivery pipe and a coolant inlet connected to a suction pipe. The loop also including an internal heat exchanger which is capable of functioning at least as a condenser, and which is connected to the compressor via the delivery pipe. The loop also including an external unit which is connected to the compressor via the suction pipe and which includes at least one external heat exchanger capable of functioning at least as an evaporator, with the internal heat exchanger being connected to the external unit via a first intermediate duct comprising at least one pressure-release member. The loop includes a deicing pipe connected to the compressor and/or to the delivery pipe, as well as to the external unit.

Abstract: A refrigerated case includes a housing including an interior display volume and a heat exchanger. The heat exchanger includes a circuit defined by a heat exchanger section including a plurality of tubes that define a flow path, a reheat section including a reheat tube, and a connecting tube fluidly connecting the flow path of the heat exchanger section with the reheat tube. Air flows over the plurality of tubes of the heat exchanger section and rejects heat to a refrigerant flowing through the plurality of tubes to heat the refrigerant. The heated refrigerant then flows through the reheat tube. As the air passes over the reheat tube, the air accepts heat from the heated refrigerant flowing through the reheat tube.

Abstract: A C02 refrigeration system has an LT system with LT compressors and LT evaporators, and an MT system with MT compressors and MT evaporators, operating in a refrigeration mode and a defrost mode using C02 hot gas discharge from the MT and/or the LT compressors to defrost the LT evaporators. A C02 refrigerant circuit directs C02 refrigerant through the system and has an LT compressor discharge line with a hot gas discharge valve, a C02 hot gas defrost supply header directing C02 hot gas discharge from the LT and/or the MT compressors to the LT evaporators, a flash tank supplying C02 refrigerant to the MT and LT evaporators during the refrigeration mode, and receiving the C02 hot gas discharge from the LT evaporators during the defrost mode, and a control system directing the C02 hot gas discharge through the LT evaporators and to the flash tank during the defrost mode.

Abstract: A heat exchanger includes a refrigerant tube through which a refrigerant for absorbing heat from air flows, and a defrosting medium tube through which a coolant for supplying heat for defrosting flows. Two fins disposed on both sides of the refrigerant tube include a protrusion protruding toward an upstream side of the flow of air with respect to the refrigerant tube. The protrusion is provided with a clearance that allows melt water generated in the defrosting to flow on the upstream side of the refrigerant tube. The refrigerant tubes and the defrosting medium tubes can be alternately arranged in the upstream line. The protrusion protrudes such that the air can be introduced into an air passage from the side portion of the protrusion even when an end facing the upstream side of the flow of the air is closed with the core of frost.

Abstract: An anti-icing system for use with a refrigerator that defines an interior area includes a cooling apparatus mounted in the interior area of the refrigerator and having a condenser portion and a plurality of spaced apart fins operably coupled to the condenser portion and extending away therefrom. The anti-icing system includes a first fan situated in a fan housing having opposed front and rear walls, the front wall defining an aperture. The first fan is situated in the fan housing so as to transmit air through the aperture when energized. The heat exchange unit is configured to be mounted in the refrigerator interior area such that the plurality of evaporator fins extends outwardly. The fan housing is configured to be mounted in the refrigerator interior area perpendicular to the plurality of evaporator fins such that air is transmitted across the fins to reduce or eliminate icing.

Abstract: A refrigerating and air-conditioning apparatus performs, even during a heating operation under air conditions leading to formation of frost, a defrosting operation while simultaneously continuing a heating operation and that improves comfort through heating by ensuring an appropriate amount of ventilation. A plurality of refrigeration cycles that are capable of independently performing a heating operation and a defrosting operation, are provided. A ventilation damper of an indoor unit in which a refrigeration cycle that performs a defrosting operation is installed is closed during a defrosting operation, and a ventilation damper of an indoor unit in which a refrigeration cycle that performs a heating operation is installed is controlled to achieve a required amount of ventilation corresponding to the indoor ventilation state.

Abstract: An air conditioning device capable of preventing drainage water dropped down from a heat exchange portion on the upper side for which a defrosting operation is performed from being frozen again in a heat exchange portion used for a heating operation, so that a decrease in a heating ability can be suppressed is provided. In an air conditioning device including a heat source side heat exchanger formed by providing a plurality of heat exchange portions, to which a refrigerant is supplied through different paths from each other, side by side in the up and down direction, and partial defrosting means for, while the heating operation is performed by using a part of the heat exchange portions, performing the defrosting operation for the other heat exchange portions, a drainage mechanism for draining drainage water generated in each of the heat exchange portions is provided for each of the heat exchange portions.

Abstract: In an air-conditioning apparatus, a heat source side heat exchanger, intermediate heat exchangers, and use side heat exchangers are separately formed and adapted to be disposed at separate locations, respectively. There is provided a defrosting operation function to melt frost attached around the heat source side heat exchanger, and a heating function during defrosting operation that drives a pump to circulate a heat medium and supply heating energy to the use side heat exchangers in need of heating to perform heating operation. The defrosting operation function can be executed by switching a four-way valve to cooling side to introduce a high-temperature high-pressure refrigerant flowed out of the compressor into the heat source side heat exchanger.

Abstract: A dispenser automatically dispenses beverage cans. A housing has a conveyor along which cans are conveyed by gravity to a removal opening. A dispensing flap is on the removal opening and can be pivoted between a closed position, in which it prevents the removal of products through the removal opening, and a removal position. The dispensing flap has two trough-shaped receptacles lying at right angles to the conveyor section for one can, and is pivotal such that in the closed position a can is conveyed from the conveyor section into the first receptacle positioned to the inside of the housing, removal of the can from the first receptacle being prevented. In the removal position the can rolls from the first receptacle into the second receptacle, at the same time a new can is prevented from being conveyed from the conveyor into the first receptacle.

Abstract: In an air-conditioning apparatus, a heat source side heat exchanger 12, intermediate heat exchangers 15a and 15b, and use side heat exchangers 26a to 26d are separately formed and adapted to be disposed at separate locations, respectively. There are provided a defrosting operation function to melt frost attached around the heat source side heat exchanger 12, and a heating function during defrosting operation that drives a pump 21a to circulate a heat medium and supply heating energy to the use side heat exchangers 26a to 26d in need of heating to perform heating operation. The defrosting operation function can be executed by switching a four-way valve 11 to cooling side to introduce a high-temperature high-pressure refrigerant flowed out of the compressor 10 into the heat source side heat exchanger 12.

Abstract: A refrigeration system utilizing natural circulation of heat to carry out defrosting thereof provides a refrigeration cycle path and a defrost cycle path, and is characterized by a heat energy storage device located at an output of a compressor that is common for the two cycle paths. High-temperature high-pressure overheated refrigerant output by the compressor passes through the heat energy storage device and releases part of heat energy thereto for storage. When the refrigeration system is switched from the refrigeration cycle path to the defrost cycle path, the compressor is turned off and three-way valves upstream an evaporator are opened, a pressure difference between the heat energy storage device and the evaporator drives the hot refrigerant to directly flow through the three-way valves into a coil of the evaporator to melt frost on the coil from inner to outer side while the refrigerant keeps circulating along the defrost cycle path.

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: A refrigerator is disclosed, which is able to more desirably carry out a heat exchange action between a hot pipe and a drain guide pipe, which guides defrosting water. The refrigerator comprises a cool air generating chamber and a machine chamber provided above a main body; a defrosting water tray provided inside the cool air generating chamber; a water collecting tray provided below the main body; a hot pipe connecting a compressor with a condenser through the water collecting tray, the compressor and the condenser being provided in the machine chamber; and a drain guide pipe mounted outside the main body and connected to the defrosting water tray and the water collecting tray to guide the defrosting water discharged from the defrosting water tray to the water collecting tray, wherein the hot pipe is provided inside or outside the drain guide pipe.

Abstract: A refrigeration machine for a domestic refrigerator includes a compressor, a condenser and an evaporator, which are connected to form a refrigerant circuit, wherein a stop valve is arranged in a refrigerant path from the condenser to the evaporator.

Abstract: A vapour compression refrigeration system includes a compressor (1) arranged to re-circulate refrigerant through a condenser (2), an expansion device (4) and an evaporator (5). To achieve rapid thermodynamically efficient defrosting of the evaporator, hot refrigerant from the condenser is stored in a defrost receiver (6) before passing through the expansion device (4). In a defrost phase, a valve arrangement (7-10) forms a closed defrost circuit connecting the evaporator (5) to the defrost receiver (6) via defrost valve (10) to allow hot fluid to pass from the defrost receiver to the evaporator and liquid refrigerant in the evaporator flows to the defrost receiver (6) via drain valve (9). In a pre-defrost phase, the valve arrangement closes the fluid input to the evaporator (5) and the compressor operates to partially evacuate the evaporator before the evaporator is connected to the defrost receiver, so that flash flooding of the evaporator with hot vapour occurs.

Abstract: Heat pumps with improved defrost cycles, methods of defrosting heat exchangers, and methods of improving the effectiveness of defrost cycles of heat pumps, for example, having a microchannel outdoor heat exchanger. A defrost valve in a refrigerant conduit opens during a defrost cycle to deliver hot refrigerant gas to a portion of the heat exchanger that otherwise defrosts more slowly or less completely than other portions of the heat exchanger. Particular embodiments pass hot refrigerant gas through a header of the heat exchanger, such as a bottom header. In a number of embodiments, the defrost valve is open only during a portion of the defrost cycle. Further, in some embodiments, the fan that is used to blow air through the heat exchanger is operated in a reversed direction during at least part of the defrost cycle to counteract natural convection through the heat exchanger.

Abstract: An air conditioner for a vehicle is provided with: a compressor that compresses a heat exchange medium; an external heat exchanger that receives the heat exchange medium and that exchanges heat with the outside of a vehicle compartment; and an evaporator that receives the heat exchange medium and exchanges heat with the inside of a vehicle compartment, and the air conditioner for a vehicle is able to perform: a defrosting cooling operation in which the heat exchange medium that has been compressed by the compressor is made to flow into the evaporator and absorb heat, and to then flow into the external heat exchanger and release heat; and a hot gas operation in which the heat exchange medium that has been compressed by the compressor is made to flow into the external heat exchanger and release heat without being made to absorb heat in the evaporator, and, by switching between performing the defrosting cooling operation and performing the hot gas operation, the air conditioner for a vehicle performs a defrostin

Abstract: An air conditioning system for a vehicle includes a compressor, a condenser, a first sub-cooler, a metering device, and an evaporator assembly. The evaporator assembly includes an evaporator and a second sub-cooler. The second sub-cooler is arranged below the evaporator such that water condensation from the evaporator drains onto the second sub-cooler to cool the second sub-cooler such that a temperature of the refrigerant exiting the second sub-cooler is less than a temperature of the refrigerant exiting the first sub-cooler.

Abstract: A conduit used only at one end of, and mildly defrosting, an evaporator without causing excessive heat to affect the evaporator in proximity to the evaporator. A tube includes at least one central passageway, at least one peripheral passageway, and at least one intermediate passageway. A refrigerant flows through the at least one peripheral passageway. A hot refrigerant gas flows through the at least one central passageway, and blends with the refrigerant flowing through the tube so as to form a defrosting blend. The defrosting blend defrosts along the full length of the tube, which occurs very rapidly due to contact of the hot refrigerant gas on the way to the end of the tube and then back through the at least one intermediate passageway of the tube as the blend.

Abstract: An object is to provide a low temperature showcase in which waste heat from a condenser and the like can be utilized by a simple constitution to effectively eliminate dew condensation on a middle pillar, particularly on gasket of upper part of a door. The low temperature showcase includes a middle pillar whose front surface abuts on the gasket of the door; a machine chamber disposed outside a main body under a display chamber and including the condenser, a fan for the condenser and the like, and the showcase further includes a middle pillar duct member which is vertically attached to the middle pillar and in which a middle pillar duct is defined, a leading portion which leads air from the machine chamber into the middle pillar duct, and exhaust holes which discharge the air flowing upwards through the duct to the outside of the gasket between the upper part of the door and the main body.

Abstract: A high performance refrigerator includes a cabinet with a unitary refrigerated interior and a refrigeration fluid circuit having first and second evaporators located within the cabinet and separated from the refrigerated interior by respective first and second evaporator covers. The refrigerator also includes a first damper controlling flow between the first evaporator and the refrigerated interior, and a second damper controlling flow between the second evaporator and the refrigerated interior. A controller directs the refrigerator to operate a three-way valve in the refrigeration fluid circuit so as to direct refrigerant to only one of the evaporators when the other requires defrosting. Both evaporators may be used to remove heat from the unitary refrigerated interior during an initial cooling or immediately after the cabinet is opened.

Abstract: There is disclosed an air conditioner including a compressor to compress refrigerant, an indoor heat exchanger to cool or heat a room, using the refrigerant, an outdoor heat exchanger to heat-exchange the refrigerant with outdoor air, the outdoor heat exchanger comprising a front heat exchange member and a rear heat exchange member, and a defrosting module to adjust an opening degree of a passage of the refrigerant drawn into the front heat exchange member and the rear heat exchange member, wherein the defrosting module includes a first expansion valve to adjust an opening of a passage of the refrigerant introduced into the front heat exchange member and a defrosting unit to adjust an opening degree of a passage of the refrigerant between the front heat exchange member and the rear heat exchange member.

Abstract: A condenser assembly for a refrigerator includes a condenser arranged in a frame. The condenser is configured for a flow of a refrigerant therethrough. The frame has at least one evaporation tray that is arranged above the condenser and one evaporation tray that is arranged below the condenser.

Abstract: A highly efficient condensate-free cooling unit functionally based on vapor-compression refrigeration cycle has been described. The condensate collected from the evaporator of the cooling unit is routed through a sub-cooling heat exchanger where it exchanges heat with the primary heat exchange medium emerging through the condenser of the cooling unit, thus, sub-cooling the primary heat exchange medium to a lower temperature before it enters the expansion valve. Emerging from the sub-cooling heat exchanger, the condensate flows through a condensate outlet pipe into multiple spray nozzles disposed over the condensate outlet pipe. The spray nozzles sprinkle the condensate over the hot air blown into the condenser to reduce its temperature. The cooling unit has a substantially higher coefficient of performance compared to the conventional cooling units utilizing vapor-compression refrigeration cycle, and eliminates the problems of condensate removal persistent in the art.

Abstract: The present invention provides an energy efficient air conditioner that can provide a continuous supply of air at dew point that is several degrees Celsius below zero, without requiring a defrost cycle. The air conditioner in accordance to present invention comprises a plurality of cooling coils with interconnecting refrigerant piping, refrigeration circuit consisting of compressor and condenser coils, control circuit and one or more electric motor driven centrifugal fan. The present invention uses two cooling systems. The first cooling system having single coil cools the air to a temperature just above zero deg. C., say four deg. C. so that the second stage gets a steady supply of cold air. The second stage has two coils, each being half the size of the first stage coil, thus taking half the air from it so that all the air from stage 1 passes through stage 2. In operation, only one coil of the second stage is active arid chills the air going through it to say minus 14 Deg. C.