Abstract: Device for compressing and drying gas includes a multistage compressor with a low pressure stage, a high pressure stage, and a pressure pipe; and an adsorption dryer with a drying zone and a regeneration zone. An intercooler is located between the low pressure stage and high pressure stage, and the device includes a heat exchanger with a main compartment with an inlet part and an outlet part for a first primary fluid. The ends of the tubes of the heat exchanger are connected to a separate inlet compartment and outlet compartment for each series of tubes. A first series of tubes forms a cooling circuit of the intercooler in order to heat up gas from the high pressure stage for the regeneration of the adsorption dryer.

Abstract: In a heat pump pool heater, undesirable compressor-created pressure spikes resulting from start-up of the heater after extended idle periods thereof are substantially eliminated by the incorporation in the heat pump refrigerant circuit of a specially designed pressure spike eliminator structure. The spike eliminator structure includes an enclosed hollow wall structure extending around a first refrigerant tubing portion disposed between the heat pump circuit compressor and condenser and forming a cavity around the first refrigerant tubing portion, and a transfer tube directly connected to a second refrigerant tubing portion disposed between the condenser and expansion valve and intercommunicating the interiors of the cavity and the second refrigerant tubing portion.

Abstract: A drier for a refrigerating cycle includes an adsorbent adsorbing moisture contained in refrigerant. The refrigerant has a molecular formula of C3HmFn (m=1-5, n=1-5, and m+n=6) and has one double bond in a molecular structure. The refrigerating cycle is a vapor compression refrigerating cycle through which the refrigerant flows. The adsorbent has adsorption characteristics in which an increasing degree of a moisture-adsorbing rate is increased as a relative humidity is increased.

Abstract: A cooling system 70 for an occupant 62 of an occupant support is a targeted cooling system comprising a coolant conduit 100 having an inlet 102 for receiving coolant from a source of coolant and an outlet 104 for discharging the coolant to a destination 120. The conduit is nonpermanently and manually shape adjustable, shape stable subsequent to adjustment, and removably securable to one or both of the occupant support and the occupant. In one embodiment the destination is an ambient environment selected to achieve targeted coolant delivery to a localized region of the occupant's body. A cooling glove 190 to be worn by a user has at least one coolant intake 210 and at least one of a) a coolant passage 240 extending from the coolant intake to an exhaust opening 260; and b) a cooperative relationship with the user which defines a fluid pathway 220 bounded in part by the glove and in part by the user.

Abstract: Apparatus and method are provided for cooling an electronic component(s). The apparatus includes a coolant-cooled structure in thermal communication with the component(s) to be cooled, and a coolant-to-refrigerant heat exchanger in fluid communication with the coolant-cooled structure via a coolant loop. A thermal buffer unit is coupled in fluid communication with the coolant loop, and a refrigerant loop is coupled in fluid communication with the heat exchanger. The heat exchanger dissipates heat from coolant in the coolant loop to refrigerant in the refrigerant loop. A compressor is coupled in fluid communication with the refrigerant loop and is maintained ON responsive to heat load of the component(s) exceeding a heat load threshold, and is cycled ON and OFF responsive to heat load of the component(s) being below the threshold. The thermal storage unit dampens swings in coolant temperature within the coolant loop during cycling ON and OFF of the compressor.

Abstract: Apparatus and method are provided for cooling an electronic component. The apparatus includes a coolant-cooled structure in thermal communication with the component(s) to be cooled, and a coolant-to-refrigerant heat exchanger coupled in fluid communication with the coolant-cooled structure via a coolant loop to receive coolant from and supply coolant to the coolant-cooled structure. The apparatus further includes a refrigerant loop coupled in fluid communication with the coolant-to-refrigerant heat exchanger, and the heat exchanger cools coolant passing therethrough by dissipating heat from the coolant in the coolant loop to refrigerant in the refrigerant loop. A controllable coolant heater is associated with the coolant loop for providing an adjustable heat load on the coolant in the coolant loop to ensure at least a minimum heat load is dissipated from the coolant to the refrigerant passing through the heat exchanger.

Abstract: Apparatus and method are provided for cooling an electronic component. The apparatus includes a refrigerant evaporator in thermal communication with the component(s) to be cooled, and a refrigerant loop coupled in fluid communication with the evaporator for facilitating flow of refrigerant through the evaporator. The apparatus further includes a compressor in fluid communication with the refrigerant loop, a refrigerant bypass pipe coupled to the refrigerant loop in parallel fluid communication with the evaporator, and a control valve for controlling refrigerant flow through the evaporator. The control valve is controlled to maintain temperature of the component(s) within a specified temperature range. The apparatus further includes a controllable refrigerant heater associated with the refrigerant bypass pipe for providing an adjustable heat load on refrigerant in the bypass pipe to ensure that refrigerant entering the compressor is in a superheated thermodynamic state.

Abstract: A receiver includes a cylindrical main tank; a cylindrical internal thread component having an internal thread; a cap having a male thread threaded with the internal thread; a sealing attached to the cap; and a filter portion arranged in the cap. The internal thread component is coaxially arranged to an inner circumference face of the tank. The filter portion includes an internal passage extending inside of the cap, and a net that collects a foreign matter contained in refrigerant flowing through the internal passage.

Abstract: Refrigerant processing equipment is provided. The refrigerant processing equipment may include: a vacuum pump; an outlet for draining vacuum pump lubricating oil from the vacuum pump; a fluid container; and a conduit configured to provide a fluid connection between the outlet and the container. A method for draining oil from a vacuum pump from refrigerant processing equipment is provided. The method may include connecting an outlet for oil on the vacuum pump with a container; and providing a valve between the outlet and the container to selectively provide fluid communication between the outlet and an the container.

Abstract: A receiver dryer for a motor vehicle air conditioning system includes an elongate housing, the housing having opposite ends and an external wall that extends between the ends, an inlet positioned in a first section of the housing for receiving condensed refrigerant from the condenser unit, an outlet positioned in a second section of the housing for providing dried condensed refrigerant to the condenser unit with a partition dividing the first section from the second section such that the second section is above the first section, a first chamber in the first section containing a desiccant for drying the refrigerant received from the inlet, a second chamber in the second section containing a filter for filtering the dried condensed refrigerant provided to the outlet, and a conduit.

Abstract: An expansion engine operating on a Brayton cycle which is part of a system for producing refrigeration at cryogenic temperatures that includes a compressor, a counter-flow heat exchanger, and a load that may be remote, which is cooled by gas circulating from the engine. The engine has a piston in a cylinder which has nearly the same pressure above and below the piston while it is moving. The piston and valves can be either mechanically or pneumatically actuated and the pressures above and below the piston can be nearly equal by virtue of a regenerator that connects the two spaces or by valves.

Abstract: An apparatus for safely and efficiently purging refrigerant lines interconnected with residential and light commercial air conditioning systems. Enhanced safety is achieved by enabling the operator to conduct purge operations away from enclosed areas such as attics and crawlspaces. Efficient use of solvent is achieved by simultaneously connecting a refrigerant line connector to the evaporator end of both suction line and liquid line and discharging solvent and compressed gas through a solvent bridge connected to the compressor end of the liquid line. Thorough contaminant removal enables retrofitting air conditioning systems for use with newer, legally required refrigerants.

Abstract: A compressor 1 for compressing a refrigerant containing a hydrofluoroolefin refrigerant, a condenser 2 for condensing the refrigerant by heat exchange, a throttle device 4 for decompressing the condensed refrigerant, an evaporator 5 for evaporating the refrigerant by heat exchange between the decompressed refrigerant and air, and air adsorbing means 3 for adsorbing oxygen and nitrogen are connected by piping so as to configure a refrigerant circuit through which the refrigerant containing the hydrofluoroolefin refrigerant is circulated.

Abstract: A refrigeration apparatus includes a condensing unit, a flow distributor, and an evaporator connected to the condensing unit via the flow distributor. A pressure detector is configured to detect condensation pressure of the refrigerant. A calculation unit is configured to calculate a target condensation pressure of refrigerant necessary for the refrigerant to be an evaporation temperature in the evaporator. A controller is configured to control the condensing unit so that the condensation pressure of the refrigerant becomes equal to or more than the target condensation pressure.

Abstract: The invention relates to an apparatus and a method for separating droplets from vaporized refrigerant. The droplet separator according to the invention has a separation vessel, where the droplets gravitationally separate from the vaporized refrigerant. A partition plate has been arranged in the separation vessel, which partition plate divides the separation space into two separation parts. Thereby the refrigerant is arranged—to pass firstly through the first separation space on the first side of the partition plate,—then to transfer to the second side of the partition plate, i.e. to the second separation space—then to pass through the second separation space on the second side of the partition plate.

Abstract: A refrigerator is provided in which a refrigerant supplied to an evaporator is precooled to a dryness of nearly zero and is supplied in a single liquid phase to increase the amount of heat exchanged by the evaporator, thereby improving cooling performance or reducing the size of the evaporator.

Abstract: A device for drying fluids conducted in a closed circuit provides a bypass line which can be switched in parallel to a pipe of the closed circuit that conducts a fluid via a first valve and a second valve. A first demoisturizer may be disposed in the bypass line. A method for drying fluids conducted in closed circuits is also provided. Part of the fluid may be directed from the pipe of the closed circuit into the bypass line connected in parallel to the pipe of the closed circuit and dried using the device according to the system described herein.

Abstract: An air conditioner is configured by appropriating existing refrigerant pipes of an existing air conditioner to update indoor units and an outdoor unit of a refrigerant circuit of the existing air conditioner. The air conditioner is disposed with an updated refrigerant circuit and a mixer disposed in the updated refrigerant circuit. The updated refrigerant circuit is filled with working refrigerant and refrigerating machine oil that include an acid trapping agent that detoxifies acid components remaining in the refrigerant pipes. The mixer mixes the acid components with the acid trapping agent during refrigeration cycle operation of the updated refrigerant circuit.

Abstract: Provided is a dryer for minimizing moisture entrained within a refrigerant used to provide a cooling effect to a temperature-controlled environment, and a refrigeration appliance including such a dryer. The dryer includes a housing defining a drying chamber and a desiccant disposed within the drying chamber for removing at least a portion of the moisture from the refrigerant. A first outlet is formed in the housing adjacent a lower region of the drying chamber when the drying chamber is viewed in an operational orientation. A second outlet is also formed in the housing at an elevation vertically above the first outlet when the dryer is viewed in the operational orientation for discharging at least a portion of the refrigerant introduced into the drying chamber to be delivered to a second heat exchanger with a relatively-low internal pressure. The elevation of the second outlet relative to the first outlet promotes the discharge of the refrigerant through the first outlet instead of through the second outlet.

Abstract: The invention relates to a soldered refrigerant condenser that consists of a heat exchange network with flat pipes and corrugated ribs, of collector pipes that fluidically communicate with the flat pipes, and of a collector (10) that is arranged in parallel to one of the collector pipes. Said collector accommodates a dryer and/or a filter (31) and fluidically communicates with the collector pipe via two overflow openings (13, 14). The dryer is configured by a chamber containing a drying agent (28) and limited by a section (18) of the collector (10, 11) and two endplates (23, 24) that extend through the cross-section of the collector (10, 11).

Abstract: The invention relates to a condenser for an air conditioning system, especially an air conditioning system of a vehicle, said condenser comprising a gill block and laterally arranged headers, the gill block comprising horizontal pipes, a condensing section and a supercooling section arranged above the condensing section. Said condenser also comprises a collector (5) arranged parallel to one of the headers and receiving a drier (16), a filter (18), a downpipe (15) and a rising pipe. The collector (5) is connected to the condensing section by means of a first overflow opening (8) and to the supercooling section by means of a second overflow opening (9) in such a way that a coolant can circulate. The downpipe (15) communicates with the first overflow opening (8), on the inlet side, by means of an inflow chamber (10) arranged in the collector (5).

Abstract: A receiver dryer for storing and drying a refrigerant for an air conditioner is integrally fixed to a condenser to form an assembly. A condenser has refrigerant flow passages, and also has an opening portion for assembling a receiver dryer. In a body of the receiver dryer, a desiccant and members such as a filter are inserted. The refrigerant flows into the receiver dryer from the flow passage through a hole, and flows out to the outflow passage side through a strainer. A ring-shaped protruding portion is formed on the body by bulging, and the body is fixed to the condenser by a C ring.

Abstract: A refrigerant filtering device of an air-conditioner includes a receiver drier having a communicating hole formed in the vicinity of a head pipe of a condenser so as to bypass refrigerant from the head pipe to the receiver drier, an insert member configured to be inserted into the communicating hole of the receiver drier, wherein a refrigerant inlet and a refrigerant outlet are formed at the insert member so that the receiver drier communicates with the head pipe, a wing member extending upwards in a bent shape from both lateral sides of the insert member to substantially receive the receiver drier, and/or a filter which is disposed at the refrigerant outlet inside the receiver drier to filter foreign substances contained in the refrigerant.

Abstract: A refrigerant system may utilize CO2 as a refrigerant. Should the sensed operating conditions indicate that the refrigerant might be approaching a condition at which the refrigerant could solidify, corrective actions are taken to prevent refrigerant transformation to a solid thermodynamic state. In one embodiment, hot gas from a compressor discharge is bypassed to a location upstream of the evaporator. In another embodiment, the high-side pressure of a refrigerant system is adjusted. In yet another embodiment, an additional charge of refrigerant is delivered on demand into the refrigerant system. In still another embodiment, a defrost cycle is initiated on demand. These embodiments prevent the refrigerant from approaching the conditions at which it may solidify.

Abstract: In a condenser for an air conditioning system, in particular for motor vehicles, comprising a condensing section (1b) and a supercooling section (1c) which is arranged above the condensing section, comprising an approximately tubular modulator (2) which is divided by a separating wall (2b) into a lower section (2c), which is connected to the condensing section (1b), and an upper section (2d), which is connected to the supercooling section (1c), comprising an ascending pipe (4) between the lower and upper sections of the modulator, and comprising a container (7) for desiccant in the lower section (2c) of the modulator, the modulator (2) is provided at the upper side with a plug (6), it being possible for the separating wall (2b) with the desiccant container to be removed upwards out of the modulator once the plug has been detached from the interchangeable unit.

Abstract: A method for using refrigerant to check for a leak in a refrigerant system is provided that establishing fluid communication between a refrigerant recovery unit and a refrigerant system. The refrigerant recovery unit passes a refrigerant through the refrigerant recovery unit, compresses the refrigerant utilizing the refrigerant recovery unit, and transfers the compressed refrigerant from the refrigerant recovery unit directly into the refrigerant system. Additional refrigerant is added into the refrigerant system until a desired system pressure is reached, and then the refrigerant system is checked for leaks.

Abstract: A pulse tube refrigerator, includes a first pulse tube; a first regenerator connected to the first pulse tube; a compressor configured to compress the coolant gas; a first supply side valve; a first filter provided between a supply side of the first supply side valve and the high temperature end of the first regenerator; a first suction side valve connected to the first filter via a first joint point; a first self seal joint provided between the supply side of the compressor and a suction side of the first supply side valve; a second self seal joint provided between a supply side of the first suction side valve and the suction side of the compressor; and a third self seal joint provided between a first regenerator side of the first filter and the high temperature end of the first regenerator.

Abstract: A reversible cooling/heating system has an in-line accumulator/dryer unit. The accumulator/dryer unit has a body having first and second ports. A foraminate conduit is positioned at least partially within the body. A desiccant at least partially surrounds a first portion of the conduit.

Abstract: A refrigerating machine for a refrigerating appliance, particularly a household refrigerating appliance, includes a compressor, a condenser, a multi-way valve for selectively directing the refrigerant flow through a refrigerant collector from an inlet to a first outlet of the same or through a bypass line while bypassing the first outlet and includes at least one first evaporator. A collecting sieve for intercepting contaminants within the refrigerant flow is placed between the inlet and the first outlet of the refrigerant collector.

Abstract: Disposed is a contaminant recovery receptacle (40) which is connected, through an inflow pipe (42) and an outflow pipe (43), to the suction side of a compressor (21). The inflow pipe (42) has an exit end which opens towards the inner bottom of the recovery receptacle (40). The outflow pipe (43) has an entrance end which is situated above the exit end of the inflow pipe (42) in the recovery receptacle (40). Firstly, a preliminary operation is carried out which causes refrigerant to circulate in a refrigerant circuit (10) for a predetermined length of time so that gas-liquid two-phase refrigerant flows into the recovery receptacle (40). Thereafter, a recovery operation is carried out, which causes refrigerant to circulate in the refrigerant circuit (10) so that gas refrigerant flows into the recovery receptacle (40). As a result, contaminants are recovered in the recovery receptacle (40).

Abstract: The present invention relates to a cap for hermetically sealing receiver driers, in which a cap body and a filter are separated and detachably engaged with each other and an O-ring is installed between the cap body and the filter, thereby facilitating the replacement of parts and the installation of the O-ring, favoring automatic assembly due to a tool insertion groove that can be formed long, achieving compactness of the cap due to the reduction of a total height of the cap when the cap body and the filter are engaged, improving a filtering effect by increasing the size of the filter with the cap being maintained in the same size, and facilitating engagement between the cap body and the filter and preventing the cap body from being released from a tank by discharging the air between the cap body and the filter.

Abstract: An outdoor unit of an air conditioner is provided. The outdoor unit includes a base assembly defining a lower exterior of the outdoor unit and supporting a plurality of components and an accumulator that is installed above the base assembly to filter off liquefied refrigerant from refrigerant entering a compressor. The accumulator includes a mounting unit enabling at least one of other components to be mounted on the accumulator.

Abstract: A desiccant cartridge for use with a receiver/dryer of an automobile air-conditioning system. The desiccant cartridge contains a cup member and a cap member. The cap member includes a plurality of fingers located about a periphery thereof. The plurality of fingers engage the cup member to secure the cap member to the cup member. The plurality of fingers operate to facilitate insertion of the cap member into the cup member using a one-way lock-type arrangement. Accordingly, pushing the cap member downward into the open end of the cup member causes each of the plurality of fingers to deflect upward and slide along an interior surface free of protrusions of the cup member. Upward movement of the cap is limited by the plurality of fingers engaging the interior surface of the sidewall, which hold the cap member in place. Accordingly, the cap member can be inserted into and locks in the cup member at any position.

Abstract: A deflector for an accumulator for an air conditioning system acts as a barrier to substantially prevent incoming liquid from entering a conduit which is primarily for gas. Fluid entering the accumulator comprises gas and liquid. The deflector also assists with the separation of gas from liquid, with reduced turbulence, to decrease the likelihood of liquid becoming re-entrained within the gas. An initial contact surface of the deflector receives the incoming fluid. The initial contact surface is substantially convex, so that liquid reflecting off the surface will be travel in a direction away (or different) from the flow of incoming fluid. The initial contact surface is also angled to direct liquid reflecting off it (or flowing down it) downward and outward.

Abstract: The invention relates to a manifold for a cooling agent of an air conditioning plant which comprises a separation form-closed element fixed inside a manifold housing, a heat exchanger provided with said manifold, the closed cooling agent circuit of the air conditioning plant with the manifold and a method for producing said manifold.

Abstract: In known filter-drier cases for refrigerant circuits, the refrigerant flows through filter and drying means in a serial manner. During operation of the refrigerant circuit, this causes an undesirably large pressure drop. It is the task of the invention to provide an improved filter-drier arrangement (1, 1?) with a smaller pressure drop. For this purpose, it is proposed to design the filter-drier arrangement so that a part of the refrigerant flows in parallel through the filter (21, 43) and the drying means (17, 43).

Abstract: The invention teaches an automatic discharge device for a lithium bromide absorption chiller unit, comprising an automatic pump apparatus, a pump chamber, a gas-liquid separation chamber, and a gas storage chamber. A valve F1 is disposed at the outlet line of the liquid pump. A valve F2 and a gas discharge and liquid feed line disposed between the liquid pump and the valve F1 are connected to the gas storage chamber. A valve F3 is set on the gas duct and liquid return line between the gas storage chamber and the gas-liquid separation chamber. A liquid choke self-closing discharge rubber ball valve, a one-way spring discharge valve, and additionally, an electromagnetic valve or a motorized valve are set on top of the gas storage chamber. The invention simplifies effectively the chiller construction and increases operational reliability.

Abstract: A cleaning system for an air conditioner injects a biocide followed at regular intervals, which may be followed by a rinsing flush.

Abstract: A receiver (24) for a condenser system (20) includes a body (32) in fluid communication with a header (28) of the condenser system (20). A first cap (38) is coupled to an end (34) of the body (32) and has a saddle portion (40) coupled to the header (28). The receiver (24) further includes a tube section (42) coupled to a second end (36) of the body. A second cap (50) is removably interconnected with the tube section (42) following insertion of a service cartridge (76) into the body (32). The service cartridge (76) includes a substantially-rigid tubular member (78) having rib members (84) radially extending from an outer surface (86) of the tubular member (78). Covers (90, 92), each having openings (94, 96), are coupled to opposing ends of the tubular member (78). The service cartridge (76) includes multiple features for drying, filtering, and/or leak detection.

Abstract: The invention relates to a cooling agent condenser (1) which comprises a finned tube block (2), collecting tubes (5) arranged on both sides thereof and a manifold (6) which is disposed in a parallel position with respect to the collecting tube (5) and connected to a cooling agent and said collecting tube (5) by means of an overflow opening (8, 9). Said manifold is embodied in the form of a monoblock tube.

Abstract: The present invention relates to a receiver-drier for separating liquid and gaseous refrigerant and removing moisture and impurities in the refrigerant, in which the lower cap is exactly assembled to the receiver-drier so as to air-tightly close a lower opening of the receiver-drier when the lower cap is screwed to the receiver-driver, thereby preventing a leakage and also facilely performing the assembling. The structure includes a receiver-drier tank having an opening at a lower end thereof; a body which is inserted into the opening to be screwed to the receiver-drier tank; a filter which is disposed at an upper side of the body to have a flange portion for assisting in exactly assembling the body and filter; and a sealing member which is provided at a junction portion between the body and the filter so as to air-tightly close the receiver-drier tank.

Abstract: In a closed loop refrigerant system and method, a refrigerant liquid filter is provided downstream of the condenser to receive and clean high pressure, high temperature liquid refrigerant. The invention provides means for cooling liquid refrigerant so as to render otherwise soluble contaminants insoluble before leaving the filter. The means for cooling preferably includes a refrigerant line provided in thermal contact with the liquid refrigerant in the filter. The refrigerant line contains expanded refrigerant gas or expanded liquid/gas mixture, which is at a lower temperature than the liquid refrigerant received from the condenser. Condensed liquid refrigerant is provided to the filter, which filter further includes a filter element for removing contaminants that have been rendered insoluble by the cooling of the liquid refrigerant.

Abstract: In accordance with one preferred embodiment, a desiccant cartridge (30) for insertion into an integrated condenser/receiver (10) comprises a rigid stand-off member (72) and a porous desiccant bag (34). The preferred rigid stand-off member comprises spaced inner and outer pad portions and an elongated stand-off portion terminating in the inner pad portion. The inner pad may include a tab portion. The porous desiccant bag is positioned between the inner and outer pad portions and affixed to one or both of the inner and outer pad portions. A rigid cap with a plurality of holes may be provided to which a second end of the porous desiccant bag may be attached. The porous desiccant bag includes first and second flat end seals, one of which is secured to attachment tab portions.

Abstract: The invention relates to an assembly for refrigerant circuits that is arranged between the compressor and the evaporator thereof including a housing with a through channel. Within the through channel is a microchannel part having a filtering portion and a decompression portion wherein filtering and decompression of the passing refrigerant can be performed generally at the same time.

Abstract: The present invention is a method and apparatus to provide for the safe and effective removal and neutralization of ammonia from a stream of waste oil or other liquid. The apparatus consists of a receiving tank, a treatment tank, circulation piping, associated controls, pumping and monitoring mechanisms. The primary utility for the invention is with commercial and industrial refrigeration units. The neutralizing solution in the treatment tank is circulated through the piping which includes a venturi that is used to induce a negative gauge pressure in the receiving tank by creating a suction that draws gases from the receiving tank. The negative pressure allows the receiving tank to pull the mixture of waste oil and entrained ammonia from the drain port of the refrigeration system even when the system is below atmospheric pressure. The venturi also removes ammonia gas from the receiving tank.

Abstract: The invention relates to a method and system for purifying exhaust gas, especially a solvent-containing exhaust gas from refrigerator recycling, wherein the dried, pressurized exhaust gas is cryogenically condensed, the condensed components are separated from the remaining exhaust gas, the cold and purified pressurized exhaust gas is passed through an adsorber to adsorbe the remaining condensed components, the adsorber is purged with a warmed gas stream, namely either a warmed inert gas stream or the purified exhaust gas respectively at reduced pressure, and the desorbed gas is recycled.

Abstract: A refrigerant bypassing and filtering apparatus of an air conditioner is disclosed which is capable of effectively removing foreign matter such as slag produced in a refrigerant line, not only when the air conditioner is initially operated, but also during normal operation of the air conditioner. The apparatus includes at least one bypass line adapted to guide a refrigerant to bypass a main line through which the refrigerant flows between an outdoor unit and an indoor unit, a strainer arranged at the bypass line, a first valve arranged at the main line between opposite ends of the bypass line connected to the main line, and second valves arranged at the bypass line.

Abstract: A liquid injection type scroll compressor is used to a refrigerating apparatus using hydrocarbon fluoride refrigerant which does not contain chlorine (HFC-125/HFC-143a/HFC-134a) as an operating fluid and an amount of an injected liquid is controlled according to a discharge temperature of the compressor. Further, ester oil and/or ether oil is used as refrigerator oil and a dryer is disposed in a refrigerating cycle. With this arrangement, a refrigerating cycle operation can be stably realized in a wide range without almost changing the arrangement of a conventional refrigerating apparatus.

Abstract: A method for operating a cryocooler wherein some cryocooler working gas is diverted from the pressure wave pathway before passing to the cold portion of the cryocooler, passed to a getter for adsorptive cleaning of contaminants, and returned to the pressure wave pathway at a warm portion of the pressure wave pathway.

Abstract: A method of installing a removable inlet port filter plate having a replaceable filter between a compressor inlet port and a suction hose assembly is taught. The inlet port filter plate includes a main body and mounting surfaces for attachment between the compressor and the suction hose assembly or between the compressor and the compressor hose block. The main body defines a passage that allows for refrigerant flow through a filter which is positioned in the passage. In one preferred embodiment the diameter of the filter is greater than the inside diameter of the compressor inlet port. In another preferred embodiment the diameter of the filter is greater than the inside diameter of the suction hose assembly outlet port.