Abstract: An evaporator unit includes a first heat exchanger configured to perform heat exchange between refrigerant flowing thereinto from a refrigerant inlet and air, a bypass passage through which the refrigerant flowing from the refrigerant inlet flows while bypassing the first heat exchanger, a second heat exchanger configured to perform heat exchange between air and mixed refrigerant in which the refrigerant after passing through the first heat exchanger and the refrigerant having passed through the bypass passage are mixed, and a flow amount adjustment portion configured to adjust a flow amount of the refrigerant flowing through the first heat exchanger and a flow amount of the refrigerant flowing through the bypass passage. Accordingly, the first heat exchanger and the second heat exchanger can be configured to have respectively portions in which a dryness of the refrigerant is in a range between 0.6 and 0.9.

Abstract: A heat exchanger is provided with a header tank having therein a circulation portion in which fluid flows, and multiple tubes which are stacked in a longitudinal direction of the header tank. The circulation portion is communicated with interiors of the tubes, and partitioned into an inlet side passage and other passages. An inflow port member is arranged at a longitudinal-direction end of the inlet side passage, and provided with multiple openings for causing at least a mainstream flow and a substream flow of fluid introduced toward the tubes. The mainstream flow is substantially evenly flow-divided by the substream flow.

Abstract: Desalination apparatus based on porous restraint panels fabricated from a number of different layers of metal, thermoplastic, or other substances are used as sophisticated heat exchangers to control the growth of gas hydrate. The gas hydrate is produced after infusion of liquid hydrate-forming material into water to be treated, which liquid hydrate-forming material can also be used to carry out all the refrigeration necessary to cool seawater to near the point of hydrate formation and to cool the porous restraint panels. Hydrate forms on and dissociates through the porous restraints. The composite restraint panels can also be used in gaseous atmospheres where, for instance, it is desired to remove dissolved water.

Abstract: A system for atomizing the refrigerant directed to an evaporator in a vapor compression refrigeration system using spray nozzles. In one embodiment, one or more spray nozzles discharge into a distributor which is connected via a plurality of conduits to the various evaporator circuits. The distributor is designed to deliver a volume of refrigerant to each circuit based on airflow rates across the circuit. In another embodiment, an atomizing spray nozzle is interposed in each evaporator circuit and the nozzles are sized to distribute atomized refrigerant to the various evaporator circuits based on airflow rates. The invention also comprehends a method if improving the efficiency of existing system by replacing conventional expansion devices with spray nozzles sized in each circuit in relation to the airflow.

Abstract: The invention relates to a multiple flow heat exchanger (1), especially a gas cooler, comprising at least two flows (2, 3) passable by a fluid (13) in opposite directions and which respectively comprise a group of parallel channels (4) provided with lamellae (5) positioned between the channels (4) in a sandwich-type manner. A deflecting pocket (6) is positioned on a first front side (1.1) of the heat exchanger (1), for reversing the direction of the fluid (13), and a fluid distributor (7) for a first flow (2) and a fluid collector (8) for a second flow (3) are arranged on a second opposing front side (1.2) of the heat exchanger (1). According to the invention, the adjacent channels (4.1), each with a different fluid temperature, for the adjacent flows (2, 3), are thermally decoupled from each other.

Abstract: The present invention concerns a method for improving the efficiency of a transcritical cooling installation and the installation itself.

Abstract: In a heat exchanger, a core has a first core portion including first tubes and a second core portion including second tubes. The first tubes defines first passages through which an internal fluid flows and the second tubes defines second passages through which the internal fluid passed through the first passages flows. A flow direction of the internal fluid passed through a first section of the first core portion and a flow direction of the refrigerant passed through a second section of the first core portion are changed with respect to a direction that the tubes are layered, before flowing in the second core portion. Thus, the internal fluid passed through the first section of the first core portion flows into a second section of the second core portion and the internal fluid passed through the second section of the first core portion flows into a first section of the second core portion.

Abstract: A shell-and-tube evaporator of a refrigerant system includes a refrigerant inlet distributor that traps a pocket of gaseous refrigerant to displace liquid refrigerant underneath the evaporator's tube bundle, thereby reducing the total charge of refrigerant in the evaporator. In some embodiments, the distributor comprises four sections interconnected by a central refrigerant feed line, which properly apportions the refrigerant to the four sections.

Abstract: A refrigeration apparatus, provided with a refrigerant circuit (90) having a plurality of refrigerant circulating routes and capable of operation in a mode where the plurality of refrigerant circulating routes differ in refrigerant evaporation temperature and/or in refrigerant condensation temperature, is activated by a single scroll compressor (10) including a casing (11) in which are arranged two compression mechanisms (31, 32), thereby making it possible to accomplish install-space savings, cost-cutting, and high-efficiency operation.

Abstract: A heat exchanger system is described and which includes a metal tubular heat exchanger; a fluid distributor conduit fabricated from a metal dissimilar to that of the heat exchanger, and wherein the fluid distributor conduit is connected in fluid flowing relation relative to the metal tubular heat exchanger; and a fluid distributor made of a metal that is similar to that of the fluid distributor conduit, and which is connected in fluid flowing relation relative to the fluid distributor.

Abstract: A flow distributor for directing flow into a parallel-flow micro-channel heat exchanger header pipe, the flow distributor utilizing a nozzle and a mixing chamber to provide an even mix of a two phase refrigerant, and a plurality of outlets which provide a means for distributing two-phase liquid-gas refrigerant evenly along the length of the header pipe.

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

Abstract: There is provided a means for uniformly controlling the in-plane temperature of a semiconductor wafer at high speed in a high heat input etching process. A refrigerant channel structure in a circular shape is formed in a sample stage. Due to a fact that a heat transfer coefficient of a refrigerant is largely changed from a refrigerant supply port to a refrigerant outlet port, the cross sections of the channel structure is structured so as to be increased from a first channel areas towards a second channel areas in order to make the heat transfer coefficient of the refrigerant constant in the refrigerant channel structure. Thereby, the heat transfer coefficient of the refrigerant is prevented from increasing by reducing the flow rate of the refrigerant at a dry degree area where the heat transfer coefficient of the refrigerant is increased.

Abstract: A comb-like insert having a body and plurality of tapered fingers is installed with its fingers disposed within respective minichannels. The fingers and their respective minichannels are so sized as to restrict the channels and frictionally hold the insert in place in one dimension while providing for gaps in another dimension such that the flow of refrigerant is somewhat obstructed but allowed to pass through the gaps between the insert fingers and the minichannel walls and then expand as it passes along the tapered fingers to thereby provide a more homogenous mixture to the individual minichannels. A provision is also made to hold the insert in its installed position by way of internal structure within the inlet manifold. In one embodiment, an internal plate is provided for that purpose, and the plate has openings formed therein for the equalization of pressure on either side thereof.

Abstract: A shell-and-tube evaporator of a refrigerant system includes a refrigerant inlet distributor that traps a pocket of gaseous refrigerant to displace liquid refrigerant underneath the evaporator's tube bundle, thereby reducing the total charge of refrigerant in the evaporator. In some embodiments, the distributor comprises four sections interconnected by a central refrigerant feed line, which properly apportions the refrigerant to the four sections.

Abstract: A coupling in accordance with the present invention may be used to join devices together without the need for conduits or other intermediaries. A nut may be used to couple the coupling to a first device via a first thread portion and to a second device via a second thread portion. In some embodiments, the coupling may be affixed to one of the first or second devices.

Abstract: A refrigerant distribution device 10 situated in an inlet header 12 of a multiple tube heat exchanger 14 of a refrigeration system 20. The device 10 includes an inlet passage 32 that is in communication with an expansion device. Small diameter conduits 34 are disposed within the inlet header 12 and are in fluid communication with the inlet passage 32. A two-phase refrigerant fluid in the inlet passage 32 has a refrigerant liquid-vapor interface 38. The conduits 34 have inlet ports 40 that lie below the refrigerant liquid-vapor interface 38. Vapor emerging from the nozzles 34 create a homogeneous refrigerant that is uniformly delivered to the multiple tubes. The invention also includes a method for delivering a uniform distribution of a homogeneous liquid mixture of liquid and vaporous refrigerant through the heat exchanger tubes.

Abstract: A distributor able to evenly supply influent two-phase refrigerant flowing in by various flow states to different pipes with an extremely small pressure loss, that is, a distributor of a gas-liquid two-phase fluid distributing a gas-liquid two-phase fluid flowing in from an inlet pipe into a plurality of distribution pipes, provided with a cylindrical vessel with a cylindrical upper part, an inlet pipe connected in a tangential direction with respect to a circular cross section of the upper portion of the cylindrical vessel, and distribution pipes connected to a lower portion of the cylindrical vessel.

Abstract: An air conditioner incorporates valve devices mounted in a plurality of indoor units, respectively, for allowing refrigerant discharged from an outdoor heat exchanger to be introduced into one or more indoor units that are in operation. The refrigerant is prevented from being introduced into the other indoor units that are not in use, and therefore, oil is prevented from being accumulated in the other indoor units that are not in use. Also, an appropriate amount of refrigerant is supplied to the indoor units that are in operation, and therefore, reliability and efficiency of the air conditioner are improved.

Abstract: A unit for a refrigerant cycle device includes an ejector that has a nozzle part which decompresses refrigerant, and a refrigerant suction port from which refrigerant is drawn by a high-speed refrigerant flow jetted from the nozzle part, a first evaporator connected to the outlet of the ejector, and a second evaporator connected to the refrigerant suction port of the ejector. One of the first evaporator and the second evaporator has a tank structure that includes a tank for distributing refrigerant into or for collecting the refrigerant from refrigerant passages of a heat exchanging part. The tank has therein a first space through which the refrigerant discharged from the outlet of the ejector flows into a heat exchanging part of the first evaporator, and a second space through which the refrigerant to be drawn into the refrigerant suction port flows into a heat exchanging part of the second evaporator.

Abstract: An evaporator unit includes an ejector, an upwind side heat exchanger for evaporating a discharge side refrigerant flowing from the ejector, and a downwind side heat exchanger for evaporating a suction side refrigerant to be drawn into the ejector. The ejector has a nozzle for decompressing refrigerant, and a refrigerant suction port, from which refrigerant is drawn by a high-speed flow of refrigerant jetted from the nozzle. The upwind side heat exchanger has a refrigerant superheat area, which is offset from a refrigerant superheat area of the downwind side heat exchanger in a direction perpendicular to an air flow to be cooled.

Abstract: The refrigerating appliance comprises at least one first, second and third refrigerating area for a low, medium or high storage temperature, whereby each refrigerating area has an evaporator (24, 25, 26). The refrigerating appliance also comprises a compressor (19), a refrigerant circuit for supplying compressed refrigerant to the evaporators (24, 25, 26) and for returning expanded refrigerant to the compressor (19), and comprises at least one switching element (22, 22?) for directing, as desired, the refrigerant through one of two branches (I, II) of the refrigerant circuit. In the first branch (I), the evaporators (24, 26) of the first and the third refrigerating areas are connected in series. In the second branch (II), The evaporators (24, 25, 26) of all three refrigerating areas are connected in series.

Abstract: Multi-type air conditioner including an outdoor unit installed in an outdoor, including a compressor, a refrigerant flow controlling part connected to a discharge end of the compressor for guiding the refrigerant proper to operation conditions selectively, and an outdoor heat exchanger connected to the refrigerant flow controlling part, a plurality of indoor units each installed in a room and having an indoor heat exchanger and an electronic expansion valve having one end connected to one end of the indoor heat exchanger, a plurality of, at least two, distributors between the outdoor unit and the plurality of indoor units for improving installation freedom of the plurality of indoor units, selectively guiding refrigerant from the outdoor unit to the plurality of indoor units proper to operation conditions, and guiding the refrigerant passed through the indoor units to the outdoor unit again, and a device for shutting off introduction of the refrigerant into the distributors connected to inoperative indoor uni

Abstract: A refrigeration system of the type having a compression stage, a condensation stage, an expansion stage and an evaporation stage, comprising a first evaporator group in the evaporation stage. The first evaporator group has two or more evaporators. A first valve is positioned upstream of the evaporators of the first evaporator group. The first valve is closeable to stop a supply of refrigerant to the evaporators of the first evaporator group simultaneously for a subsequent air defrost of the evaporators of the first evaporator group.

Abstract: A multi-way valve, particularly for a refrigerant circuit, includes a housing having a number of inlets and outlets and a chamber with a number of seats respectively associated with an inlet or outlet. The multi-way valve also includes a closing element that can move between the seats and at least one actuator, which is provided in the form of an element made of a shape-memory alloy and capable of being displaced from one of the seats when the closing element is heated. The direction of displacement is transversal to the normal direction of the seat.

Abstract: A refrigerant distribution device 10 situated in an inlet header 12 of a multiple tube heat exchanger 14 of a refrigeration system 20. The device 10 includes an inlet passage 32 that is in communication with an expansion device. Small diameter nozzles 34 are disposed within the inlet header 12 and are in fluid communication with the inlet passage 32. Capillary liquid nozzles 36 also lie within the inlet header 12 and are in fluid communication with the inlet passage 32. A two-phase refrigerant fluid in the inlet passage 32 has a refrigerant liquid-vapor interface 38. The vapor nozzles 34 have vapor inlet ports 40 that lie above the refrigerant liquid-vapor interface 38. The capillary liquid nozzles 36 have liquid inlet ports 42 that lie below the refrigerant liquid-vapor interface 38. Vapor emerging from the vapor nozzles 34 blow onto and atomize liquid emerging from the liquid nozzle to create a homogeneous refrigerant that is uniformly delivered to the multiple tubes.

Abstract: Disclosed is a composite valve comprising a valve body that is provided integrally with a solenoid valve portion and a differential pressure valve portion. The valve body is formed with an upper valve chest, a lower valve chest, a refrigerant introduction chamber that communicates with the upper valve chest and has a differential pressure valve seat, and a back pressure introduction chamber that communicates with the lower valve chest. A main valve element that is opened and closed by means of the solenoid valve portion is located between the upper valve chest and the lower valve chest. A differential pressure valve element that is opened and closed by means of a differential pressure between the refrigerant introduction chamber and the back pressure introduction chamber is located between these two chambers. The refrigerant introduction chamber, back pressure introduction chamber, and differential pressure valve element are arranged so as not be situated on the outer surface of the valve body.

Abstract: An evaporator system comprised of two individual refrigerant circuits, integrated in such a way that if one circuit is not in operation, no portion of the airflow through the evaporator fails to come into contact with the refrigerant in the active circuit. This eliminates the possibility of so-called bypass air (air passing through inactive region of evaporator). An extreme example of bypass air is illustrated in the use of a split face evaporator where on half of the evaporator is active and the other half is inactive. The purpose of such an integrated dual circuit evaporator being to improve part load performance of a refrigerating or air conditioning system when one circuit of the system is inactive.

Abstract: An end plate (20) has a fluid inlet hole (27) communicating with a front header (12b) and covered with a fluid diffusing portion (60) which is in the form of a semispherical plate and which has small holes (60a).

Abstract: A refrigerant nozzle and distributor assembly for use with a refrigeration system having a plurality of evaporator circuits. The refrigerant nozzle and distributor assembly comprise a distributor body having an internal wall that divides the distributor body into an inlet portion and an outlet portion and an aperture having a central axis and formed in the internal wall between the inlet portion and the outlet portion. This embodiment further includes an adjustable pin that has first and second ends and a longitudinal axis substantially-coaxial with the central axis wherein the first end is configured to cooperate with the aperture. The adjustable pin and the aperture form a nozzle. A method of manufacturing a refrigerant nozzle and distributor assembly and a refrigeration system is also provided.

Abstract: The present invention provides an indoor unit in air conditioner, including two heat exchangers, a connection pipe connecting the heat exchangers, first means for guiding refrigerant flow, and second means provided to the connection pipe. The two heat exchangers, i.e., first and second heat exchangers, have one ends connected to first and second pipelines connected to parts outside of the indoor unit, for an example, a compressor or an outdoor expansion device. The first means selectively guides the refrigerant introduced thereto through the first or second pipeline to be discharged through the second or the first pipeline after being passed through both, or either of the first and second heat exchangers. The second means is provided to the connection pipe so that the refrigerant transferred from one of the first and second heat exchanger to the other one of the first and second heat exchanger is passed in an original state or in an expanded state.

Abstract: For high reliability through redundancy, in a thermal chamber, heat exchange tubes are configured in multiple parallel runs. Typically three tubes are attached side-by-side in a strip which is formed into folded-back horizontal rows to be built into or attached to the walls of the chamber. In a freezer, each tube can serve independently as an evaporator when connected to a compressor/condenser source. Versatile source interfacing is provided by two valve-manifold routing units, one at each end of the multi-tube strip, enabling easy tube substitution in case of failure, as well as facilitating source-swapping, networking, defrosting and refrigerant operations such as purging, flushing, replenishing, changing or replacement, all without interrupting the required cooling process or affecting the chamber temperature.

Abstract: The refrigerating appliance comprises at least one first, second and third refrigerating area for a low, medium or high storage temperature, whereby each refrigerating area has an evaporator (24, 25, 26). The refrigerating appliance also comprises a compressor (19), a refrigerant circuit for supplying compressed refrigerant to the evaporators (24, 25, 26) and for returning expanded refrigerant to the compressor (19), and comprises at least one switching element (22, 22′) for directing, as desired, the refrigerant through one of two branches (I, II) of the refrigerant circuit. In the first branch (I), the evaporators (24, 26) of the first and the third refrigerating areas are connected in series. In the second branch (II), The evaporators (24, 25, 26) of all three refrigerating areas are connected in series.

Abstract: Multi-type air conditioner including an outdoor unit installed in an outdoor, including a compressor, a refrigerant flow controlling part connected to a discharge end of the compressor for guiding the refrigerant proper to operation conditions selectively, and an outdoor heat exchanger connected to the refrigerant flow controlling part, a plurality of indoor units each installed in a room and having an indoor heat exchanger and an electronic expansion valve having one end connected to one end of the indoor heat exchanger, a plurality of, at least two, distributors between the outdoor unit and the plurality of indoor units for improving installation freedom of the plurality of indoor units, selectively guiding refrigerant from the outdoor unit to the plurality of indoor units proper to operation conditions, and guiding the refrigerant passed through the indoor units to the outdoor unit again, and a device for shutting off introduction of the refrigerant into the distributors connected to inoperative indoor uni

Abstract: At least one bypass assembly for use in a heating-refrigeration system having a distributor body with a first and second orifice, an inner chamber and a plurality of fluid passages integrated within, and a conduit connected to the distributor body. The conduit has a first end that connects with a component in the heating-refrigeration system, a second end that connects to the first orifice of the distributor body and a third end connected to the second orifice of the distributor body. A metering device is integrated into the conduit. The second orifice of the distributor body has a valve seat integrated therewithin and the conduit has at least one inwardly projecting indentation located in close proximity to the third end of the conduit. A ball is positioned between the valve seat and the inwardly projecting indentations for reciprocating movement therebetween.

Abstract: A two-compartment cooling apparatus which achieves a plurality of refrigeration cycles by controlling refrigerant paths, thus increasing cooling efficiency and cooling speed of the cooling apparatus. A compressed refrigerant provided by a compressor is selectively provided to first and/or second evaporators via first, second and third expansion units and a path control unit. The path control unit controls the flow of the refrigerant through the expansion units and the evaporators to vary the cooling in the respective compartments in response to temperature measurements made in the respective compartments.

Abstract: Embodiments of the invention provide a compact, seal-less, centrifugal liquid pump with a perimeter magnetic drive that is substantially smaller than a conventional centrifugal liquid pump having magnets attached directly to the impeller shaft. Because rotational force is applied at the perimeter of the impeller, rather than at the shaft, embodiments of the invention have lower torque requirements and rotational speed, increasing the life of the pump bearings. Additionally, embodiments of the invention may suspend the pump bearings by using a redirected flow of liquid coolant, further increasing the bearing life.

Abstract: A vapor-compression refrigerant cycle system includes a first evaporator in which refrigerant is evaporated, a second evaporator in which refrigerant is evaporated at a pressure lower than that in the first evaporator, and a switching device for switching between a first circulation where the refrigerant is circulated to the first evaporator and a second circulation where the refrigerant is circulated to the second evaporator. When the switching device switches to the second circulation from the first circulation, a refrigerant circulation into the second evaporator is stopped until the refrigerant pressure in the second evaporator becomes equal to or lower than a predetermined pressure. Therefore, the pressure in the second evaporator can be rapidly reduced. Further, when carbon dioxide is used as the refrigerant, the pressure in the second evaporator can be further rapidly reduced.

Abstract: An evaporator system comprised of two individual refrigerant circuits, integrated in such a way that if one circuit is not in operation, no portion of the airflow through the evaporator fails to come into contact with the refrigerant in the active circuit. This eliminates the possibility of socalled bypass air (air passing through inactive region of evaporator). An extreme example of bypass air is illustrated in the use of a split face evaporator where on half of the evaporator is active and the other half is inactive. The purpose of such an integrated dual circuit evaporator being to improve part load performance of a refrigerating or air conditioning system when one circuit of the system is inactive.

Abstract: The present invention relates to a cooling apparatus including a compressor, a condenser, a first expanding unit, a second expanding unit, a third expanding unit, a first evaporator, and a second evaporator; a first refrigerant circuit containing refrigerant discharged from the compressor and flowing into a suction side of the compressor through the condenser, the first expanding unit, the first evaporator, the second expanding unit and the second evaporator; a second refrigerant circuit containing the refrigerant passing through the condenser flowing into the suction side of the compressor through the third expanding unit and the second evaporator; a flow path control unit installed at a discharge side of the condenser, switching a refrigerant flow path so that the refrigerant passing through the condenser flows through at least one of the first and second refrigerant circuits; and a control unit selectively opening and closing the flow path control unit.

Abstract: The present invention provides an indoor unit in air conditioner, including two heat exchangers, a connection pipe connecting the heat exchangers, first means for guiding refrigerant flow, and second means provided to the connection pipe. The two heat exchangers, i.e., first and second heat exchangers, have one ends connected to first and second pipelines connected to parts outside of the indoor unit, for an example, a compressor or an outdoor expansion device. The first means selectively guides the refrigerant introduced thereto through the first or second pipeline to be discharged through the second or the first pipeline after being passed through both, or either of the first and second heat exchangers. The second means is provided to the connection pipe so that the refrigerant transferred from one of the first and second heat exchanger to the other one of the first and second heat exchanger is passed in an original state or in an expanded state.

Abstract: A two-compartment cooling apparatus which achieves a plurality of refrigeration cycles by controlling refrigerant paths, thus increasing cooling efficiency and cooling speed of the cooling apparatus. A compressed refrigerant provided by a compressor is selectively provided to first and/or second evaporators via first, second and third expansion units and a path control unit. The path control unit controls the flow of the refrigerant through the expansion units and the evaporators to vary the cooling in the respective compartments in response to temperature measurements made in the respective compartments.

Abstract: System and method for reducing temperature variation among components in a multi-component system. In this respect, component temperatures are controlled to remain relatively constant (approximately within 5° C.) with respect to other components, while allowing for multiple fluctuating heat loads between components. A refrigeration system possessing a variable capacity (speed) compressor and an electronic valve is utilized to control the flow of refrigerant through the refrigeration system. The temperature of the components is reduced by metering the mass flow rate of the refrigerant cooling the components to compensate for the heat load applied to the refrigeration system.

Abstract: Refrigeration appliance comprising at least two storage compartments (10, 11) and a refrigerating circuit comprising a compressor (14), a condenser (15), valve means (18, 19) and two evaporators (12, 13). The compressor (14) is a variable-capacity compressor, and said valve means are constituted by a unidirectional valve (18) and a flow-diverting valve (19) to selectively feed said evaporators via respective throttle means (16, 17). The result is a sensible energy saving effect in the operation of the appliance.

Abstract: Respective evaporators are set to a proper value in evaporation temperature and the efficiency in refrigeration cycle is enhanced, resulting in a reduction of energy consumption. A refrigerating unit and a refrigerator comprise a compressor, a condenser, a plurality of evaporators connected in series, a refrigerant flow rate adjustable unit and a refrigerant, thereby constituting a refrigeration cycle. The refrigerant flow rate adjustable unit controls each respective evaporation temperature of the plurality of evaporators. Preferably, the refrigeration unit further comprises a bypass circuit bypassing at least one of the plurality of evaporators and, when needs arise, the refrigerant is channeled through the bypass circuit.

Abstract: An ice cream machine for cooling liquid ice cream into frozen ice cream includes an evaporator system with a secondary evaporator. The evaporator system includes a cooling chamber having an ice cream input and an ice cream output. A valve can be placed at the ice cream input to achieve dry freeze operation. The valve can prevent the cooling chamber from being completely filled.

Abstract: A temperature control method for a refrigerator includes providing a valve device, in which an inflow port where a refrigerant flows into, at least two outflow ports having a first outflow port and a second outflow port where the refrigerant flows out, and a valve element for performing opening/closing of the outflow ports are positioned in a sealed space. The method also includes providing a valve element drive device for driving the valve element. The method further includes controlling the valve element drive device, at the time a power source of the refrigerator is turned on, to reciprocate between a first mode as an OPEN-CLOSE mode and a second mode on a CLOSE-OPEN mode until a temperature in a first chamber where the refrigerant is supplied through the first outflow port, and a temperature in a second chamber where the refrigerant is supplied through the second outflow port, are lowered to reach to a prescribed temperature.

Abstract: A heat exchanger including a plurality of thermally-conductive, fluid-conveyance tubes, and at least one header from which each of the plurality of fluid-conveyance tubes extends. The header includes an elongate outer tube and an elongate inner tube disposed eccentrically within the outer tube, with a fluid conduit being defined between the inner tube and the outer tube. The plurality of fluid-conveyance tubes are in fluid communication with the conduit.

Abstract: A heat exchanger including a plurality of thermally-conductive, fluid-conveyance tubes, and at least one header from which each of the plurality of fluid-conveyance tubes extends. The header includes an elongate outer tube and an elongate inner tube disposed eccentrically within the outer tube, with a fluid conduit being defined between the inner tube and the outer tube. The plurality of fluid-conveyance tubes are in fluid communication with the conduit.

Abstract: The present invention relates to a solenoid valve supporter of Kim-chi refrigerator that guarantees the original functions of the solenoid valve with very simplified structure for mounting a plurality of solenoid valves by positioning every solenoid valve corresponding to the evaporators on one supporter body with the same intervals and flowing and emitting the refrigerants into the plurality of solenoid valves through the supporter. The Kim-chi refrigerator comprise a solenoid valve supporter S for supporting the plurality of solenoid valves S1, S2, and S3 every corresponding to the plurality of evaporator 17.