Abstract: An air-conditioning system operated with CO2 for a vehicle has a high-pressure section that is connected to the output of a compressor and includes a gas cooler, a low-pressure section that is connected to the suction side of the compressor and includes an evaporator, and an expansion member connecting the high-pressure section and the low-pressure section. The expansion member has a fixed restrictor with a throttle opening of predetermined length and diameter connected between an inlet from the high-pressure section and an outlet to the low-pressure section whereby under all operating conditions of the system, a pressure of refrigerant in the high-pressure section of the system is limited to values of less than 14 MPa. The restrictor can be connected in parallel with a pressure limiting valve and can include two or more different throttle openings that can be selectively connected for refrigerant flow.

Abstract: An evaporator for an HVAC system is disclosed wherein an upstream to downstream airflow is directed through the evaporator for inducing a transfer of thermal energy between the airflow and a fluid circulating in the evaporator. The evaporator includes at least two cores adjacent one to the other. Each of the cores defines a core inlet and a core outlet and the cores are arranged such that the core inlet of the first core is positioned at an opposite end from the inlet of the second core. Correspondingly, the outlet of the first core is positioned at an opposite end from the outlet of the second core. The evaporator inlet is in fluid communication with the first core inlet and the second core inlet and the outlet is in fluid communication with the first core outlet and the second core outlet.

Abstract: System and method for reducing temperature variation among heat dissipating components in a multi-component computer 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 speed compressor or a constant speed compressor is utilized to control the flow of refrigerant through the refrigeration system. The temperature variation among components is reduced by independently metering the mass flow rate of the refrigerant flowing into each component to compensate for the amount of heat load on each component. In this respect, the mass flow rate of the refrigerant entering into each of the evaporators is metered by valves located upstream from each of the evaporators.

Abstract: A refrigerant cycle has a main expansion valve communicating with an inlet header which in turn communicates with a plurality of flow passages moving towards an evaporator coil. Each of the plurality of passages is provided with an individual restriction which provides additional expansion. The individual restrictions can each be separately controlled or designed such that the flow through each of the passages can be tailored to optimum efficiency and operation within the evaporator coil. However, the use of the main expansion valve in series with these restrictions ensures that each of the restrictions can be relatively simple items. Further, the use of the separate restrictions provides a system which has a simplified inlet header system.

Abstract: A device for air temperature control in a vehicle has a unit forming a first circuit for circulation of an coolant, a unit forming a second circuit for circulation of a refrigerant, a unit for connecting the first circuit with an engine for heating the coolant, a unit for providing a heat exchange between the second circuit and the first circuit for cooling the coolant, a single air temperature regulating element, and a unit for alternatively connecting the first a unit to the air temperature regulating element so that when the coolant is heated from the engine and supplied through the first a unit the air temperature regulating element heats air in the vehicle, or connecting the second a unit with the common air temperature regulating element so that when the coolant in the first circuit is cooled by heat exchange with the refrigerant of the second circuit and the cooled coolant is supplied to the air temperature regulating element to cool air in the vehicle, and a heat exchanger which provides a heat exchan

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.

Abstract: A vapor compression system including a compressor, a condenser, an expansion device, and an evaporator. The evaporator includes a main distributor having an inlet, a first outlet, and a second outlet, a coil, the coil having an inlet connected with the first outlet of the main distributor, an outlet, and at least one opening, wherein the opening is located on a surface of the coil between the inlet and the outlet, and a feed line connecting the second outlet of the main distributor to the coil opening. The vapor compression system includes a discharge line connecting the compressor to the condenser, a liquid line connecting the condenser to the inlet of the expansion device, a saturated vapor line connecting the outlet of the expansion device to the inlet of the main distributor, and a suction line connecting the outlet of the coil to the compressor.

Abstract: A refrigerant distributor of a refrigerating cycle for a heat pump of the present invention comprising a compressor for compressing a refrigerant and discharging the refrigerant variably, a distributor for distributing the refrigerant passed through an expansion device expanding the refrigerant to a plurality of branching pipes and making the refrigerant flow to a evaporator including a plurality of blocks, a refrigerant flow controller installed on a certain branching pipe of the distributor for opening/closing the flow of the refrigerant to the branching pipes, and a by-pass pipe for making a certain amount of the refrigerant discharged variably from the compressor flow to the refrigerant flow controller by connecting the discharge side of the compressor and refrigerant flow controller so as to open/close the certain branching pipe of the distributor by the operation of the refrigerant flow controller in accordance with the discharge compressor of the refrigerant discharged variably from the compressor is c

Abstract: A laminate-type heat exchanger includes a core 10 formed by a plurality of plate-shaped tubular elements 20 laminated in a thickness direction thereof. Each tubular element 20 is provided with two refrigerant passages 25a and 25b extending in a longitudinal direction thereof and arranged fore and aft. The core 10 includes a plurality of passes P1 to P4 each formed by a prescribed number of the refrigerant passages arranged in the width direction of the core 10 and a turn portion T formed between the upper portions of the second pass P2 and the third pass P3. At a prescribed portion of the turn portion T, a refrigerant flow resisting portion including a semi-restricting passage 43 and/or an interrupting passage 44 is provided. The refrigerant passed through the second pass P2 is restricted by the refrigerant flow resisting portion when passing through the turn portion T to be equally distributed. Then, the refrigerant is introduced into the third pass P3 in an equally distributed manner.

Abstract: A refrigerant system selectively operable in a cooling mode, a reheat cooling mode, and a heating mode, includes a primary heat exchanger and a reheat heat exchanger that condition air for a room. In the cooling mode, the primary heat exchanger functions as an evaporator that cools the air, while the reheat heat exchanger is inactive. In the reheat cooling mode, the primary heat exchanger cools the air, and hot refrigerant in the reheat heat exchanger reheats the air to provide dehumidified air at or near room temperature. In the heating mode, the primary heat exchanger functions as a condenser that heats the air, while the reheat heat exchanger is inactive. When the reheat heat exchanger is inactive, a unique venting arrangement prevents the inactive heat exchanger from becoming flooded with liquid refrigerant.

Abstract: A falling film evaporator for use in a vapor compression refrigeration chiller preferably employs a two-phase refrigerant distributor that overlies the tube bundle in the evaporator shell. The tube bundle defines at least one vapor lane which facilitates the conduct of refrigerant vapor from the interior of the tube bundle to the exterior thereof in a manner which does not substantially affect the vertically downward flow of liquid refrigerant through the tube bundle and across the vapor lane.

Abstract: A heat-source-side space and two heat-use-side spaces are formed in a casing. A heat-source-side heat exchanger is contained in the heat-source-side space, and heat-use-side heat exchangers are individually contained in the heat-use-side spaces. The casing is formed with a plurality of suction ports for room air and a plurality of delivery ports for conditioned air. The suction ports and the delivery ports are individually connected to ducts communicating with rooms. The heat-source-side heat exchanger and the plurality of heat-use-side heat exchangers constitute refrigerant circuitry.

Abstract: An evaporator has plural tubes arranged in parallel with each other in a width direction perpendicular to an air flowing direction. The tubes are further arranged in a plural rows in the air flowing direction, and tank portions extending in the width direction are arranged in the plural rows in the air flowing direction to correspond to the tubes. In the evaporator, refrigerant flows through a zigzag-routed refrigerant passage formed by the tank portions and the tubes. A partition wall defining adjacent two tank portions in the air flowing direction has plural bypass holes through which the adjacent two tank portions directly communicate with each other. Therefore, the zigzag-routed refrigerant passage of the evaporator is readily formed without an additional side passage or the like. Thus, the number of components of the evaporator is reduced thereby simplifying the structure of the evaporator, and pressure loss of refrigerant flowing in the evaporator is decreased.

Abstract: An air conditioner arrangement including an outer air conditioner. The air conditioner includes a compressor for compressing a refrigerant and connections for transporting the refrigerant to at least two indoor air conditioners for heat transfer. Between the compressor and each respective indoor air conditioners is provided a main injection tube, and an expansion chamber is connected to the main injection tube. The main injection tube is inserted into the expansion chamber. The expansion chamber has an inlet which is connected with a common cycling tube. When one or more of the indoor air conditioners is shut off or stopped because the temperature in one of the rooms have reached a preset degree, the compressor can divert excess refrigerant to other indoor air conditioners that are still operating, so that the other rooms can quickly reach their preset temperature or comfort zone.

Abstract: The invention relates to a distributing/collecting tank (distributor/header case) of aluminum or an aluminum alloy of an at least dual flow (double-flow) brazed evaporator of a motor vehicle air conditioning equipment, wherein the case comprises a tube bottom and a cap (28), which supplement each other at least in the direction of the narrow cross-section to the case, and in its longitudinal extension direction corresponding to the number of flows at least a longitudinal partition, wherein at least one case wall on the front side is formed by a separate end piece (62) being in close contact to each adjacent longitudinal partition and at least one case wall is provided with the refrigerant inlet (14).

Abstract: A plurality of heat transfer tubes are disposed at certain intervals, in-tube operating fluid (such as coolant) passes therethrough, and a plurality of small-gage wires are used as a heating fin. One small-gage wire is wound at a pair of heat transfer tubes 1a and 1c in a spiral manner, and another small-gage wire is wound at a pair of heat transfer tubes 1b and 1c in the spiral manner, and still another small-gage wire is wound at a pair of heat transfer tubes 1b and 1d in the spiral manner. Thereby, while higher heat transfer coefficient can be achieved, and a heating surface area is ensured, clogging can be avoided even when moisture in air condenses on a surface of a heat exchanger. As a result, it is possible to realize a high-performance and compact heat exchanger used for air conditioning.

Abstract: Efficient two-phase refrigerant mixture distribution is accomplished in a falling film evaporator by use of a refrigerant distributor disposed internal of the evaporator shell which overlies the evaporator tube bundle and which internally causes said two-phase refrigerant mixture to be made available along essentially the entire length and across essentially the entire width of the tube bundle prior to the delivery of the refrigerant out of the distributor.

Abstract: A dual (or multi) sectional evaporator system comprising first and second (or more) evaporator sections capable of cooling the air supply through the evaporator. The first evaporator section is positioned upstream of the second evaporator section (second upstream of the third and so on). However, the warmest refrigerant passes through the first evaporator section and the coldest refrigerant passes through the second evaporator section (or last evaporator section if more than two sections), such that the air supply is precooled prior to reaching the second (or last) evaporator. Providing a two (or more) passes of refrigerant through the dual (or multi) sectional evaporator system increases the superheat temperature out of the first evaporator up to about 25 degrees Fahrenheit, and/or increases the mass flow of refrigerant because of the increased heat exchange efficiency provided by counterflow heat exchange.

Abstract: A fan coil unit comprising an air conditioning coil using a main cooling coil surrounding by a heat pipe. The cooling coil is face-split to form a first portion for conditioning inside air, as needed, and second portion for continuously conditioning outside air. The air conditioning coil is positioned between an pre-cooler or evaporator coil and a re-heater or condenser coil. The pre-cooler and re-heater are comprised of a plurality of passive heat pipes, at least one circuit for each of the first and second portions of the face-split cooling coil. Each of the circuits is a continuous length of pipe folded into a C-shape having a crossover end and a hair pin end. In this way, vapor can rise in the upper portion of the pre-cooler side, through the upper crossover pipe, to the re-heater side.

Abstract: A stack type evaporator has a compact structure and a high cooling ability. A plurality of flat and plate-like tubular elements 1, each having a pair of formed plates 7, are stacked together in the lateral direction. Each tubular element 1 has two or more passages 10 inside it, each extending along the longitudinal direction. A refrigerant flows through a forward passage 10 in the tubular elements 1, and shifts to a return passage 10 in the direction opposed to the air flow. A corrugate inner fin 11 is placed throughout the refrigerant passages 10. One of the formed plate pair 7 has short cylindrical tanks 12a projecting outward, while the other has short cylindrical tanks 12b projecting outward, but in the opposite direction. When stacking up the tubular elements 1, the tanks 12a are fit into the corresponding tanks 12b of the adjacent formed plate 7 of the next tubular element 1.

Abstract: The distributor is constituted by a simple metal sheet (17) shaped as a spherical calotte that is provided with holes (17b) at its periphery and which is plane at the center. This plane element is preferably delimited by a conical body (17a).

Abstract: A split air conditioner unit having a distributor located indoors for delivering refrigerant to a plurality of evaporator flow circuits. The distributor is connected to an outdoor condenser by a refrigerant line containing an expansion device. A strainer is located at the entrance to the distributor that homogenizes the expanded two phase mixture so that refrigerant of equal quality is delivered to each of the evaporator flow circuits.

Abstract: A compression type refrigeration system having a compressor, a condenser and an evaporator positioned remotely from the condenser, a liquid feed line connecting the condenser outlet with the evaporator inlet, said feed line having a length, and an expansion device located in the liquid feed line and positioned remotely from the evaporator. Where multiple evaporators are employed a novel distributing device is employed to divide the main refrigerant stream flowing in the liquid feed line between the expansion device and the evaporators into sub-streams which flow to each of the multiple evaporators. A hot gas defrost is provided which is designed to avoid condensation of refrigerant within the defrosting evaporator.

Abstract: In a distribution device (1) including a distribution tank (3) supplied with a mixed-phase medium consisting essentially of a gas-phase medium and a liquid-phase medium, and a plurality of distribution paths (4), each of which has a medium inlet port and a medium outlet port coupled to the distribution tank and a heat exchanger, respectively, and which are for directing the mixed-phase medium from the distribution tank to the heat exchanger, the medium inlet ports of the plurality of distribution paths are coupled to the distribution tank substantially along an equal void ratio line defined by connecting those points of the distribution tank which are equal in a void ratio to each other, where the void ratio is defined as a ratio of the volume of the gas-phase medium to the volume of both the gas-phase medium and the liquid-phase medium. Typically, the medium outlet ports of the distribution paths are coupled to a plurality of exchanger tubes of the heat exchanger, respectively.

Abstract: A refrigerant separator is capable of exhibiting the heat exchanger capacity to the maximum extent, by dividing the refrigerant, including liquid phase and gas phase, at an optimum refrigerant separation ratio, regardless of the mounting position of the refrigerant separator in the heat ex-changer inside the indoor unit of an air conditioner. A first passage having a first opening end, a second passage branched off from the first passage, and a third passage branched off from the first passage are provided. The second passage and third passage are formed in mutually different inside diameters by using an L-shaped partition. Supposing the inside diameter of the second passage to be .phi.A and the inside diameter of the third passage to be .phi.B, .phi.A and .phi.B are set so as to satisfy the relation of 7/10<.phi.B/.phi.A)<1.

Abstract: A refrigerant distribution unit 10 is an integrated structure comprising: a multiplicity of branch tubes 12a-12c connectable with a multiplicity of indoor units 1a-1c; a distributor 11, connected with one refrigerant tube 5a extending from an outdoor unit for receiving refrigerant from the outdoor unit, the distributor distributing the refrigerant to the multiple branch tubes 12a-12c; and electric valves 15 provided one in each of the branch tubes 12a-12c for controlling the flows of refrigerant that pass through the respective branch tubes; and a case for enclosing the flow control unit. The refrigerant distribution unit 10 enables distribution of optimal amounts of refrigerant to all of the coexisting indoor units 1a-1e, even when the indoor units 1d-1e have much larger heat capacities than the indoor units 1a-1c.

Abstract: Distribution of liquid refrigerant in an evaporator having a pair of spaced headers (20), (22) and a plurality of tubes (24) extending between the headers (20), (22) to define a plurality of spaced refrigerant passages (42) is achieved through the use of at least one refrigerant inlet (30), (32), (34), (36) within one of the headers (20). The inlet has a first port (49) adapted to be connected to a source of refrigerant to be evaporated, and oppositely directed second and third ports (50), (52) connected to the first port (49). The second port (50) is directed away from one side (44) of the header (20) while the third port (54) is directed toward the side (44) of the header (20).

Abstract: In a heat exchanger (1) including first through M-th tube groups, each tube group comprising at least one exchanger tube (10), and a distribution device (3) which has a distribution tank (30) supplied with a medium and first through M-th distribution paths (31, 32, and 33) for directing the medium from the distribution tank to the first through the M-th tube groups, respectively, medium inlet ports of the first through the M-th distribution paths are coupled to first through M-th regions of the distribution tank that have first through M-th void ratios different to each other. Medium outlet ports of the first through the M-th distribution paths are coupled to the exchanger tubes of the first through the M-th tube groups, respectively.

Abstract: A universal housing body for a refrigeration expansion device including a movable orifice piston. The body is adapted for interchangeable use with a piston of a first variety having a radial boss portion extending along a first axial distance, L.sub.1, from a forward boss end having an annular sealing surface of a first maximum sealing diameter, d.sub.max1, to a rearward boss end, and a piston of a second variety having a radial boss portion and an annular seal member having a forward surface defining with a rearward end of the boss portion a second axial distance, L.sub.2, therebetween greater than the first axial distance L.sub.1, and having a second minimum sealing diameter, d.sub.min2, greater than d.sub.min1 and less than d.sub.max1. The housing body has an internal fluid passageway extending from a forward end to a rearward end which couplable with a flange end of an associated adapter. An annular valve seat, having an inner diametric extent, d.sub.i, intermediate d.sub.min2 and d.sub.

Abstract: A device for mixing or otherwise processing compositions at preselected temperatures, comprising a container for receiving the composition ingredients; a jacket member disposed about the container at a spaced distance therefrom so as to form a substantially sealed area therebetween; a unit for introducing fluid flow through the area defined by the relationship between the jacket member and the container; and wherein the jacket member includes a plurality of inlet ports disposed substantially evenly about an end portion of the jacket member for receiving the fluid which is introduced into the defined area, so as to maintain the container at a substantially uniform temperature.

Abstract: An improved distribution system for an evaporator. The system comprises an evaporator having a plurality of heat exchange flow paths; and an evaporator distributor operably connecting the plurality of flow paths to an evaporator inlet. The system includes an impingement device having an outlet operably connected to the evaporator inlet and having at least a pair of fluid inlets arranged so that fluid entering through either of the fluid inlets directly impinges upon fluid entering the other fluid inlet thereby providing a churned up fluid to the impingement device outlet. Additionally, the system includes an expansion device having an inlet and an outlet; and a separator having a separator inlet connected to the expansion valve outlet and having at least a pair of outlets. The separator is arranged to divide fluid from the expansion device into several streams and direct those streams to its outlets.

Abstract: A heat exchanger, as mounted on the outdoor unit or indoor unit of an air conditioner system, is formed with a plurality of passages for a refrigerant. To this heat exchanger, there is connected a refrigerant distributor for distributing the refrigerant to the individual passages or for collecting the distributed refrigerant. This refrigerant distributor is constructed by soldering two corrugated plate members to form a refrigerant conduit between the corrugations. Before these plate members are soldered, the refrigerant conduit is either partially constricted to form a throttle portion or partially bulged to form a filter portion by fitting a filter member in the bulging portion when the plate members are soldered. Thus, the refrigerant distributor can set the diversion of the refrigerant to a predetermined ratio by the simple device while reducing the space and lowering the cost.

Abstract: An evaporator/expansion valve unit for use in an automotive air conditioning system, comprises an evaporator which includes first and second parallely extending elongate tanks and a plurality of flat hollow elements mounted on the first and second elongate tanks. The interior of each element is in a fluid communication with the interior of each tank. The first tank is formed with inlet and outlet openings. A block type expansion valve has a first passage which is closed when a spherical valve body abuts against a given part of the first passage against a certain force applied thereto and a second passage which has a temperature sensing means by which the certain force is varied in accordance with the temperature of a refrigerant flowing in the second passage. The first passage has an outlet opening connected to the inlet opening of the first tank. The second passage has an inlet opening connected to the outlet opening of the first tank. The expansion valve has the first tank directly mounted thereon.

Abstract: A refrigerating exchanger (1) for a refrigeration facility such as a cold storage room or a refrigerated display case, including a refrigerant or heat-removing fluid circulating assembly (5) connected to a heat exchanging assembly (6) with a large surface area. The assemblies (5, 6) form an array of several layers (7) and several rows (8) in the form of a plurality of mutually similar parallel members (9) separated by spacers (10) for providing heat insulation and collecting defrosting runoff water. Each member (9) comprises at least one layer (7) as well as a respective inlet (11) and outlet (12) forming part of the circulating assembly (5).

Abstract: An object of the invention is to settle an unbalanced refrigerant flow in a heat exchanger thereby to improve a heat exchanging efficiency. In a heat exchanger having a refrigerant conduit provided through a plurality of fins, the refrigerant conduit is divided into a plurality of sets, each consisting of a plurality of parallel conduits, and parallel conduits of a set are put in communication with each other at ends thereof and in communication, through a single passage, with ends of parallel conduits of another set.

Abstract: A connector assembly with an integral connector body of a specified size and shape. The connector body has a substantially hexagonal upper section connected to a first, unthreaded cylindrical section, which in turn is connected to a second threaded cylindrical section, which in turn is connected to a third unthreaded cylindrical section with substantially the same diameter, which in turn is connected is connected to a bottom, undercut, unthreaded section. The assembly also contains an adaptor having a central channel and an external annular sealing groove, a washer disposed within a seal cavity for forming a sealed connection when the body and adaptor are engaged, and a collar for movably connecting the connector body to the adaptor and selectively positioning the external sealing groove with respect to the internal sealing groove.

Abstract: An evaporator capable of improving heat-exchange efficiency by enhancing performance to distribute refrigerant to many refrigerant passages of a refrigerant distribution pipe from a throttle. The evaporator is capable of suppressing the occurrence of a refrigerant passing noise by the throttle while maintaining the throttle of a nozzle at a certain size as to be able to function as a throttle. The inner diameter of the throttle in the nozzle is made as large as possible. The cross-sectional center of the throttle of the nozzle is off-centered toward the upper side relative to the cross-sectional center of the refrigerant distribution pipe inserted into the inlet tank of the evaporator. The refrigerant flows out of the throttle in a mixed condition of liquid and gas, and separation of gas and liquid in the refrigerant is alleviated inside the refrigerant distribution chamber.

Abstract: A cooling apparatus is provided comprising a vessel confining a pool of liquid. A plurality of separate tubular passageways are immersed in the liquid. A header assembly is provided having a first chamber and a second chamber. The first chamber is operatively connected to one end of each of the separate tubular passageways and the second chamber is operatively connected to the other end of each of the separate tubular passageways.

Abstract: A connector assembly with an integral connector body of a specified size and shape. The connector body has a substantially hexagonal upper section connected to a first, unthreaded cylindrical section, which in turn is connected to a second threaded cylindrical section, which in turn is connected to a third unthreaded cylindrical section with substantially the same diameter, which in turn is connected is connected to a, bottom, undercut, unthreaded section. The assembly also contains an adaptor having a central channel and an external annular sealing groove, a washer disposed within a seal cavity for forming a sealed connection when the body and adaptor are engaged, and a collar for movably connecting the connector body to the adaptor and selectively positioning the external sealing groove with respect to the internal sealing groove.

Abstract: A vapor compression system having a mixing and distributing unit mounted in the refrigerant circuit between the system expansion valve and evaporator. The unit includes a mixing vane and a nozzle for directing a uniformly distributed two phase mixture into the evaporator.

Abstract: A refrigeration appliance having at least two refrigeration compartments, each compartment having its own access door, is provided wherein there is a first evaporator for the first compartment, the first evaporator operating at a first pressure level and a second evaporator for the second compartment, the second evaporator operating at a pressure level higher than the first pressure level. There is a single condenser, a single compressor, a refrigerant circuit having a series of conduits with different flow control capabilities for providing a flow of refrigerant sequentially, that is, not simultaneously, to the first and second evaporators, the condenser and compressor, and various valves in the refrigerant circuit for directing refrigerant to a selected one of the evaporators from the condenser and for preventing a flow of refrigerant into the first evaporator when refrigerant is being directed into the second evaporator to cool the second compartment.

Abstract: A refrigerant evaporator for a refrigeration cycle which separates a refrigerant of a two-phase gas and liquid state introduced from a pressure reduction means into a liquid refrigerant and a gas refrigerant by a gas and liquid separation means and distributes at least the liquid refrigerant to a plurality of refrigerant passageways of a heat exchange portion by a distribution means such as a tank. The distributed refrigerant has a single phase such as a liquid refrigerant and therefore the distribution is uniformly and equally carried out, the efficiency of the evaporator becomes higher, and the size can be reduced.

Abstract: A refrigeration device for refrigerating containers for industrial use, and process for the same, includes an upper collector for feeding a refrigerant liquid into an interior of the covers around the container so that the liquid falls only by the force of gravity, and a distribution system.

Abstract: A refrigerant evaporator for a refrigeration cycle provided with a heat exchanging unit, comprising a passageway to be cooled and a cooling passageway, and an evaporating unit for cooling the air, wherein a part of the inflowing refrigerant is divided, passed through a throttle to be reduced in pressure, and then passed through the cooling passageway of the heat exchanging unit, the inflowing refrigerant passing through the passageway to be cooled is cooled and completely changed to the liquid state and then passed into the evaporating unit, whereby the refrigerant is uniformly distributed to a plurality of refrigerant passageways of the evaporating unit.

Abstract: A solenoid valve 70 is disposed in a pipe line between an expansion valve 60 and an evaporator 80 for rear seats side. When the cooling operation is switched to the operation of utilizing only evaporator 50 for front seats side from the operation of utilizing evaporators 50 and 80 for front seats side and rear seats side, the solenoid valve 70 is closed by closing the operation switches Sc and Sf. The solenoid valve 70 can restrain an occurrence of water hammer phenomenon by stopping a refrigerant flow in air-liquid phase at the downstream of an expansion valve.

Abstract: A combination expansion and flow distributor unit suitable for use in a heat pump for homogeneously mixing liquid and vapor phase refrigerant throttled through the expander section and uniformly distributing the mixture into the individual flow circuits of a downstream heat exchanger.

Abstract: Inefficiencies in an evaporator for a refrigerant in a refrigeration or air-conditioning system may be avoided in an evaporator having a plurality of tubes (18) in fluid and geometrical parallel through which the refrigerant may pass by providing a refrigerant distributor between an inlet (26) and the tubes (18) which includes an orifice (86) connected to the inlet (26) for directing a stream of refrigerant toward a flat impingement surface (102) from which it is disbursed to a plurality of receiver passages (34) angularly spaced about the periphery of the impingement surface (102) and respectively connected by a fluid passage (38, 44, 50) to an associated one of the tubes (18).

Abstract: A cooling device having a refrigeration chamber (1) and a freezer chamber (3), a refrigeration plant having an evaporator (15) and condenser (18), a compressor (16) and air flow passageways (5, 8, 11) for conducting air flow across the evaporator and through the refrigerator and freezer. Capillaries of different size (19, 20) control the flow of refrigerant from the condenser to the evaporator to control the temperature of the evaporator. A pressure device (36) produces the air flow through the passageways to the refrigerator and freezer. Motorized valves (30, 31) are operated by temperature sensors within the refrigerator and freezer to control the flow of air therethrough. A variable temperature compartment (4) may be provided and connected to the airflow passages, with a flow control valve (32) for maintaining a temperature therein set by the user.

Abstract: A refrigerant flow switching device for alternatively conveying flow of refrigerant from either a high pressure or a low pressure evaporator to a compressor of a refrigeration system and a refrigerator using such a refrigeration system. The device utilizes the pressure difference between the higher pressure refrigerant from the high pressure evaporator and the lower pressure refrigerant from the low pressure evaporator or atmospheric pressure to open and close a first flow controller of the device positioned in a conduit leading from the high pressure evaporator to the compressor. The device further comprises a second flow controller, such as a check valve positioned in a conduit leading the low pressure evaporator to the compressor, which stays open only when the first flow controller is closed.

Abstract: An evaporator is made up of a plurality of heat exchange modules each in turn made up of an elongated lower header 30 of non rectangular cross section and having a plurality of tubes 40 mounted by the header 30 along its length and extending therefrom in side by side relation. The tubes 40, in the direction transversely of the header 30 are stacked and assembled together with the lower headers in sealing abutment with each other and defining upwardly opening channels 56. Sets of serpentine fins 44 can extend between adjacent tubes 40 in each module and/or between the plurality of modules.