WITH MEANS FOR CHARGING CLOSED REFRIGERATION PRODUCING SYSTEM

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This subclass is indented under the class definition.  Apparatus with means for introducing a material, usually a refrigerating fluid, into a closed circuit from a source external of the circuit, means to provide the refrigerant, to replace a lost portion or to replace one component with another.

SEE OR SEARCH THIS CLASS, SUBCLASS:

77,for related processes.
149,for automatically adding or withdrawing refrigerant relative to a closed system.

SEE OR SEARCH CLASS:

141, Fluent Material Handling, With Receiver or Receiver Coacting Means,   appropriate subclass for means for transferring a fluid to a receiver of general utility.


 
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Patent Number
Title
  Date
3964267 Refrigeration charging cylinder Jun-22-1976
A refrigerant charging cylinder for vapor refrigeration systems has a valve mounted on a refrigerant tank in which a refrigerant is partially liquid and partially gaseous, with the tank being arranged during use thereof with the gas between the liquid and the valve. Included in the valve is a saturated...     
3976110 Refrigerant charging kit Aug-24-1976
A do-it-yourself kit for charging an automobile air conditioning system. A charging hose has a special delivery fitting to be connected first to the charging nipple on the suction side of the compressor of the operating system. Such fitting has a depressor to open the nipple valve and has a check valve...     
4014181 Air conditioning methods and apparatus Mar-29-1977
Closed-circuit cooling processes, and apparatus for performing such processes, in which a working fluid is successively compressed, condensed through the removal of heat, expanded, and vaporised by take-up of heat from a fluid to be cooled, before being again compressed, the working fluid having been...     
4026320 Valve assembly for panel mounting May-31-1977
A valve assembly particularly adapted for air conditioning systems and with provision for mounting on a panel or housing wall. The valve assembly has an elongated body with three bosses extending radially therefrom. The body has abutment faces at two of the bosses and has an abutment shoulder at the...     
4148198 Refrigeration charging and sealing device Apr-10-1979
A capillary tube of long length insertable into a distal end of a process tube from a compressor of a refrigeration unit has a Schraeder fitting attached to a distal end of the capillary tube to charge the compressor, after charging the compressor the proximal tip of the capillary tube can be cut from...     
4182370 Air conditioning charging apparatus coupling Jan-8-1980
An improved air conditioning charging apparatus includes a plug which is connected with the air conditioning system. The plug is provided with a valve of the automotive tire or Dill type to prevent leakage of refrigerant fluid from the air conditioning system. To further prevent leakage of refrigerant...     
4288993 Refrigerator Sep-15-1981
A refrigerator comprises a primary refrigerating system and a secondary refrigerating system in heat-exchanging contact with each other. The secondary refrigerating system is connected to a reservoir containing a control gas getter which can be heated to vary the amount of free control gas in the secondary...     
4313453 Thermally operated valve Feb-2-1982
A valve for conduit systems, such as a base valve for precharged refrigeration circuits, wherein the valve element is initially closed, and is opened by the application of heat to the valve body exterior. The valve element is maintained in a closed or sealed position by a low temperature fusible material,...     
4332273 Leakproof refrigerant connector Jun-1-1982
In combination with a valve having a biased opening mechanism; a connector for receiving fluid from said valve comprising: a connector body with a nut spaced there around; a cylinder; a tubing attached at one end thereof to the connector body and at a second end to the cylinder; an elongated spring extending...     
4441330 Refrigerant recovery and recharging system Apr-10-1984
The invention pertains to method and apparatus for servicing refrigeration circuits wherein the refrigerant is removed from the circuit and the circuit recharged. In accord with the invention the recovered refrigerant may be reprocessed for recharging the circuit, or the recovered refrigerant may be...     
4470265 Refrigerant charging system Sep-11-1984
An apparatus for charging a refrigeration system with a predetermined amount of refrigerant by weight. The apparatus includes a cylinder which is mounted on top of a strain gauge scale that is first filled from a source of refrigrant and then automatically discharged to fill a refrigeration system with...     
4476688 Refrigerant recovery and purification system Oct-16-1984
The present invention is directed to a self-contained refrigerant recovery and purification system capable of removing gaseous refrigerants from a disabled refrigeration unit for cleaning acid and impurities from the refrigerant so that the refrigerant can be reused or saved rather than being lost to...     
4476892 Dual purpose refrigerant connector Oct-16-1984
A connector used in resupplying refrigerant is adaptable to provide a leakproof connection with either a Schroeder-type valve or a standard or service-type valve fitting.
4513578 Weight-monitored air-conditioner charging station Apr-30-1985
A mobile air-conditioner charging station having a reluctance-type weighing scale on which are mounted reservoirs of both lubricant oil and refrigerant. A computer module reads the weight loss of the combined reservoirs as, first, the oil is charged into the air-conditioner and then, sequentially and...     
4535802 Twist-cam refrigerant dispensing valve Aug-20-1985
A manually operable valve apparatus capable of temporary attachment at one end directly to a refrigeration apparatus which is to be charged with a pressurized refrigerant, such as from a portable source of refrigerant, the present valve apparatus can be attached at its opposite end to a hose or the like...     
4539817 Refrigerant recovery and charging device Sep-10-1985
A servicing device is shown for recovering and charging refrigerant in a cooling system of the type having a compressor for circulating compressible refrigerant in a closed, pressurized system between a condenser and an evaporator to provide a cooling effect. The servicing device includes a storage container...     
4644973 Valve unit for air-conditioner piping Feb-24-1987
In a valve unit provided with a straight-cylindrical valve housing having a thick barrel portion and a thin head portion; an inward-facing valve seat on the upper edge of the head portion; and an upper edge on the head of an internal valve element, the upper edge engages the inward-facing valve seat...     
4646527 Refrigerant recovery and purification system Mar-3-1987
A refrigerant recovery and purification system is disclosed for recovering refrigerant from a heat pump, air conditioner, or other vapor compression refrigerant system into a storage tank while concurrently purifying the recovered refrigerant of impurities and contaminates. The refrigerant recovery and...     
4688388 Service station for refrigeration equipment Aug-25-1987
Apparatus for service and recharge of refrigeration equipment, with particular application to automotive air conditioning equipment. A vacuum pump, and oil and refrigerant charge containers are housed within a portable enclosure and configured for selective connection by electrically operated solenoid...     
4698983 Modified compressor unit Oct-13-1987
A system for the emptying, replenishing and testing of oil maintained within an oil reservoir of a crank case of a compressor unit having an external casing for purposes of housing the compressor motor wherein the interior of the casing is maintained under a positive pressure due to refrigerant entering...     
4700549 On-board refrigerant charging system Oct-20-1987
An on-board refrigerant charging system for a vapor cycle environmental control system in an aircraft or the like. A pair of accumulation chambers are provided for holding two different refrigerant components, each chamber including an outlet. A selectively operable valve is operatively associated with...     
4753267 Refrigeration valve Jun-28-1988
A valve 10 is disclosed for effectively sealing an opening 11 in an accumulator tank 12 for a refrigeration system holding a refrigerant under very high pressure. The valve stem 17 has a cylindrical portion 29 which increases in diameter toward the flange 28 forming an arcuate concave surface 30 and...     
4766733 Refrigerant reclamation and charging unit Aug-30-1988
A self-contained refrigerant reclamation and charging unit is connected between the refrigeration system to be charged or evacuated and a standard refrigerant receiver. Rather than using a pump (vacuum or otherwise) or an auxiliary refrigerant system (as in many prior art devices), the present invention...     
4768347 Refrigerant recovery and purification system Sep-6-1988
A refrigerant recovery system which includes a compressor having an input coupled through an evaporator and through a solenoid valve to the refrigeration system from which refrigerant is to be withdrawn, and an output coupled through a condenser to a refrigerant storage container. The evaporator and...     
4776174 Refrigerant recovery device Oct-11-1988
A refrigerant recovery device comprises a pressure vessel filled with packings, such as Berl saddles, that provide a large surface area for mass transfer. The vessel is partly filled with a refrigeration-quality oil. The pressure vessel is mounted on a stand and pivoted so that it can easily be inverted...     
4809520 Refrigerant recovery and purification system Mar-7-1989
A refrigerant recovery system which includes a compressor having an input coupled through an evaporator and through a solenoid valve to the refrigeration system from which refrigerant is to be withdrawn, and an output coupled through a condenser to a refrigerant storage container. The evaporator and...     
4856290 Refrigerant reclamation system Aug-15-1989
An on-site refrigerant reclamation system connectable to an operating refrigeration or air conditioning installation periodically removes small batches of the contaminated refrigerant to separate out the contaminants. A storage tank provided with an electric heater receives the contaminated refrigerant...     
4887435 Refrigeration cleaning and flushing system Dec-19-1989
A portable refrigeration system and process for flushing and cleaning an installed refrigeration system includng disconnecting the compressor from the installed system and connecting the disconnected lines to a portable refrigeration system including a compressor, a condenser, a receiver, an evaporator,...     
4903499 Refrigerant recovery system Feb-27-1990
A system for refrigerant and recovery and processing includes a hollow fluid-tight pressure vessel having a fluid input; a hollow annular jacket having its inner surface in thermal communication with the pressure vessel, the jacket having a polar axis in substantial alignment with the gravity vector,...     
4938031 Refrigerant recovery and purification system Jul-3-1990
A refrigerant recovery system which includes a compressor having an input coupled through an evaporator and through a solenoid valve to the refrigeration system from which refrigerant is to be withdrawn, and an output coupled through a condenser to a refrigerant storage container. The evaporator and...     
4939905 Recovery system for differing refrigerants Jul-10-1990
A refrigerant recovery system that includes a compressor having a inlet connected to a refrigeration system from which refrigerant is to be recovered, and an outlet connected through a condenser to a refrigerant storage container. The condenser includes multiple condenser sections, preferably in an integral...     
4942741 Refrigerant recovery device Jul-24-1990
The container is provided for use in a refrigerant recovery device. The container includes a refrigerant storage tank having a wall defining an exterior and generally hollow interior. A tank inlet is provided through which refrigerant can flow from the exterior of the tank to the interior of the tank....     
4953357 Safety refrigerant storage cylinder Sep-4-1990
A refrigerant storage apparatus including one or more holding tanks for containing refrigerant, and a float control device capable of preventing further access of refrigerant to the holding tanks when a certain predetermined level of refrigerant has been reached within the holding tanks.
4958501 Refrigerant charging apparatus Sep-25-1990
In a refrigerant charging apparatus for charging a refrigerant by using a refrigerant can (1), an upper can-opening part (21), a conduit (6) having two ways of inner passages for indication and charging and a lower can-opening part (6A), and a level indicator (4) communicated with the refrigerant can...     
4967570 Refrigerant reclaim method and apparatus Nov-6-1990
A refrigerant reclaim system includes a compressor, a heat exchanger, an oil separator, a condenser, a chill tank, a filter-dryer and a cooling coil in the chill tank. Refrigerant to be reclaimed is drawn through the cold side of the heat exchanger, converted to a gas which is discharged into the oil...     
4981020 Apparatus for recovering refrigerant Jan-1-1991
An apparatus for recovering a compressible refrigeration fluid from a refrigeration system and delivering the recovered fluid to a receiver as disclosed. The apparatus includes a discriminator tank for discriminating between influent liquid phase fluid and gas phase fluid. Liquid phase fluid is directed...     
4993461 Chlorofluorocarbon recovery device Feb-19-1991
A chlorofluorocarbon recovery device including a compressor, condenser and gas recovery container which are sequentially linked by ducts for recovering and recycling chlorofluorocarbon in the refrigerants which were conventionally dissipated in the atmosphere and ignored at the time of repair or destruction...     
4998416 Refrigerant reclaim method and apparatus Mar-12-1991
A refrigerant reclaim system including a compressor, a heat exchanger, an oil separator, a condenser, a chill tank, a filter-drier and a cooling coil in the chill tank. An improvement relates to means for preventing the premature destruction of the compressor pump by supplying the compressor with a liquid...     
5020331 Refrigerant reclamation system Jun-4-1991
A refrigerant reclamation system for a refrigeration system having a refrigerant therein. The system includes a pump for removing refrigerant from the refrigeration system. The pump is driven by a pneumatic motor. The pump has a first mode of operation for removing refrigerant in a substantially liquid...     
5024061 Recovery processing and storage unit Jun-18-1991
A refrigerant recovery processing and storage unit (RPSU) for removing and storing refrigerant from an air conditioning and refrigeration system (AC&R) is disclosed. The unit creates a pressure difference between the inlet and outlet side of the AC&R, and a pressurized motivating gas is delivered to...     
5025633 CFC recycling system Jun-25-1991
This invention involves a method for recycling Freon by the use of an appropriate valve that is attached to the Freon source in the appliance. The appliance can be a refrigerator, an air conditioner or any structure using Freon. The valve is so constructed so as to have a puncture means which taps the...     
5036675 Refrigeration cleaning and flushing system Aug-6-1991
A portable refrigeration system and process for flushing and cleaning an installed refrigeration system including disconnecting the compressor from the installed system and connecting the disconnected lines to a portable refrigeration system including a compressor, a condenser, a receiver, an evaporator,...     
5038578 Refrigerant recovery and purification system Aug-13-1991
A refrigerant recovery system which includes a compressor having an input coupled through an evaporator and through a solenoid valve to the refrigeration system from which refrigerant is to be withdrawn, and an output coupled through a condenser to a refrigerant storage container. The evaporator and...     
5040382 Refrigerant recovery system Aug-20-1991
A refrigerant recovery apparatus has features for trapping oil recovered from an air conditioning system. It has a low pressure oil separator which is mounted in line with the flow of refrigerant on the suction side of the compressor. The low pressure oil separator will be located at a lower elevation...     
5046322 Electronic refrigerant transfer scale Sep-10-1991
An electronic scale assembly for transferring refrigerant charge between a tank and refrigeration equipment under service comprises a generally rectangular enclosure that includes a handle positioned along one side edge of the enclosure for manually transporting the scale, and a cover for selectively...     
5050401 Compact refrigerant reclaim apparatus Sep-24-1991
A compact refrigerant reclaim apparatus that is capable of removing refrigerant from a refrigeration system during repairs in order to remove oil and other impurities from said refrigerant and being capable of returning the refrigerant to the refrigeration system in a clean state. The apparatus includes...     
5067327 Refrigerant recovery and recharging device Nov-26-1991
In a device to recover refrigerant from a refrigeration circuit and subsequently recharge the refrigeration circuit with the recovered refrigerant, the condenser and refrigerant storage means of the device is a cooled tank. Refrigerant vapor inputs the base of the tank through a one-way check valve so...     
5072593 Refrigerant reclaim method and apparatus Dec-17-1991
A refrigerant reclaim system includes a compressor, a heat exchanger, an oil separator, a condenser, a chill tank, a filter-dryer and a cooling coil in the chill tank. Refrigerant to be reclaimed is drawn through the cold side of the heat exchanger, converted to a gas which is discharged into the oil...     
5076063 Refrigerant processing and charging system Dec-31-1991
For use in processing an object refrigerant produced from an original refrigerant, a refrigerant processing system comprises a separating unit (18, 20, and 22) for separating the original refrigerant into a gaseous phase refrigerant component and a liquid phase refrigerant component. A first supplying...     
5077984 Refrigerant handling unit Jan-7-1992
A readily portable refrigerant handling unit for withdrawing, receiving, storing and optionally recharging the refrigerant of a down refrigeration system under repair or servicing or the like, the unit accommodating interchangeable refrigerant reclaim tanks provided with refrigerant porting systems connectable...     
5086630 Refrigerant reclaim apparatus Feb-11-1992
A refrigerant reclaim system including a compressor, a heat exchanger, an oil separator, a condenser, a chill tank, a filter-drier and a cooling coil in the chill tank. Such refrigerant reclaim system including means for evacuating gaseous refrigerant after the removal of all liquid refrigerant, means...     
5090211 Refrigerant recovery and recycling system Feb-25-1992
A recovery, filtering, and purification, and recycling apparatus and system for use with air conditioners, heat exchangers and the like, has a separator with an associated heat exchanger for vaporizing refrigerant within the separator.
5101637 Refrigerant recovery device Apr-7-1992
A lightweight, portable, unmotorized apparatus for recovering condensable halocarbons is described. The device is comprised of two containers. The first container, which is substantially cryogenic, is adapted to hold refrigerant; this container is comprised of a valve and a refrigerant line. The refrigerant...     
5101641 Compact refrigerant reclaim apparatus Apr-7-1992
A compact refrigerant reclaim apparatus that is capable of removing refrigerant from a refrigeration system during repairs in order to remove oil and other impurities from said refrigerant and being capable of returning the refrigerant to the refrigeration system in a clean state. The apparatus includes...     
5123259 Refrigerant recovery system Jun-23-1992
An apparatus and method for refrigerant recovery which removes refrigerant in liquid form from an air conditioning unit by cooling the refrigerant, thereby creating a temperature gradient between the air conditioning unit and the recovery apparatus which urges the refrigerant from the air conditioning...     
5165253 Multiple cooling medium recovery apparatus Nov-24-1992
A multiple cooling medium recovery apparatus comprising, a refrigerating circuit which circulates a refrigerant through a compressor, a condenser, an expansion valve, a heat exchanger with an evaporation path and a compressor, and a plurality of recovery routes separated from one another to which a plurality...     
5167126 Refrigerant recovery and recycling assembly Dec-1-1992
An apparatus for recovering and recycling used refrigerants from automotive air conditioning systems and similar air conditioning systems is disclosed having a unique cleaning assembly, a unique coolable storage means, and for recharging recycled refrigerant a unique metering means, as well as gauge...     
5168721 Refrigerant recovery device Dec-8-1992
A single pass refrigerant recovery device recovers refrigerant from a refrigeration system. The device includes at least one hose for withdrawing refrigerant from the refrigeration system and a first oil separator disposed downstream of the refrigerant hose. A filter is disposed downstream from the oil...     
5176008 Refrigerant reclaim method and apparatus Jan-5-1993
A refrigerant reclaim method and apparatus is described wherein a separate primary refrigeration pathway is utilized to drive refrigerant to be reclaimed through a secondary refrigeration pathway. The primary refrigeration pathway is comprised of a compressor, the hot side of a first heat exchange element,...     
5181390 Manually operated refrigerant recovery apparatus Jan-26-1993
A refrigerant recovery device for recovering compressible refrigerant from refrigeration system. The system includes in serial fluid communication, a compressor, a condensor, and a means for storing refrigerant. An expansion device is provided in the fluid line interconnecting the condensor and the storage...     
5182918 Refrigerant recovery system Feb-2-1993
A refrigerant recovery system that includes a refrigerant accumulator having an inlet port for connection to the liquid port of equipment from which refrigerant is to be recovered, a vapor outlet port and a liquid outlet port. The liquid outlet port of the accumulator is connected to the inlet of a liquid...     
5186017 Refrigerant recovery device Feb-16-1993
A device is disclosed for recovering refrigerant from a mechanical refrigeration system having a high pressure port through which refrigerant can be withdrawn from the system, and a low pressure port through which refrigerant can be withdrawn from the system. The purging device includes a refrigerant...     
5187940 Refrigerant recovery and purification system Feb-23-1993
A refrigerant recovery and purification system is provided. A one-pass system removes refrigerant, filters and purifies it and condenses and stores the refrigerant in its liquid state for reuse. A collection tank is provided which separates the non-condensible gases, thereby eliminating pressure buildup...     
5187942 Refrigerant overcharge prevention system Feb-23-1993
A refrigerant overcharge prevention system is applied to a refrigerant charging apparatus which has a refrigerant supply source and a refrigerant supply pipe connected to a refrigerant circuit of a cooling apparatus. The charging apparatus charges refrigerant into the refrigerant circuit while activating...     
5189881 Refrigerant recovery apparatus and method Mar-2-1993
A refrigerant recovery system or apparatus and method for moving a liquid refrigerant from a refrigerator system to a storage cylinder remotely located from the refrigerator. This system includes a chiller unit, and a piping circuit for connection to the refrigerator system, and a storage cylinder connected...     
5189882 Refrigerant recovery method Mar-2-1993
An apparatus and method for refrigerant recovery which removes refrigerant in liquid form from an air conditioning unit by cooling the refrigerant, thereby creating a temperature gradient between the air conditioning unit and the recovery apparatus which urges the refrigerant from the air conditioning...     
5189889 Refrigerant reclaiming device Mar-2-1993
An apparatus for reclaiming contaminated refrigerant is disclosed. This apparatus contains three heat exchangers, the first of which cools the refrigerant to a temperature of less than about 32 degrees Fahrenheit, the second of which cools the refrigerant to a temperature of less than about -40 degrees...     
5193351 Refrigerant recovery and purification system Mar-16-1993
A refrigerant recovery and purification system that includes a refrigerant compressor having an inlet for connection to refrigeration equipment under service from which refrigerant is to be recovered. The outlet of the compressor is connected through a condenser to a refrigerant storage vessel or container,...     
5195333 Refrigerant reclaim method and apparatus Mar-23-1993
A refrigerant reclaim system includes a compressor, a heat exchanger, an oil separator, a condenser, a chill tank, a filter-dryer and a cooling coil in the chill tank. Refrigerant to be reclaimed is drawn through the cold side of the heat exchanger, converted to a gas which is discharged into the oil...     
5209077 Refrigerant recovery system May-11-1993
A refrigerant recovery system that includes a refrigerant accumulator having an inlet port for connection to the liquid port of equipment from which refrigerant is to be recovered, a vapor outlet port connected to the inlet of a refrigerant compressor, and a liquid outlet port. A valve connects the liquid...     
5212959 Refrigerant processing and transferring system May-25-1993
A refrigerant and transfer system has a vapor suction inlet connector to introduce refrigerant from a refrigerant line of a refrigerant system under repair containing refrigerant in vapor form to an input end of a first fluid path which pumps the refrigerant to its output end. The first fluid path has...     
5230224 Refrigerant recovery system Jul-27-1993
A circuit for recovering refrigerant from a disabled refrigeration unit combines a vacuum pump, vapor pump or compressor in series with a compressor for drawing gaseous refrigerant from the disabled unit. The series arrangement of the vacuum source and the compressor provides approximately -29 inches...     
5241834 Refrigeration fluid recovery apparatus Sep-7-1993
An apparatus adapted for recovering compressible refrigeration fluid from a refrigerator means and delivering the recovered fluid under high-pressure conditions along a line to a receptacle, in fluid communication and in sequence along the line. An accumulator means to which refrigeration fluid from...     
5243832 Refrigerant reclaim method and apparatus Sep-14-1993
A refrigerant reclaim system includes a compressor, a heat exchanger, an oil separator, a condenser, a chill tank, a filter-dryer and a cooling coil in the chill tank. Refrigerant to be reclaimed is drawn through the cold side of the heat exchanger, converted to a gas which is discharged into the oil...     
5245839 Adsorption-type refrigerant recovery apparatus Sep-21-1993
An adsorption-type refrigerant recovery apparatus for a refrigeration and air conditioning system that has a connection unit, a refrigerant flow direction control device, a refrigerant adsorbing/desorbing device, a refrigerant/lubricant separating device, a condensation heat exchanging device, a drying/purging...     
5245840 Refrigerant reclaim method and apparatus Sep-21-1993
A refrigerant reclaim method and apparatus is described wherein a separate primary refrigeration pathway is utilized to drive refrigerant to be reclaimed through a secondary refrigeration pathway. The primary refrigeration pathway is comprised of a compressor, the hot side of a first heat exchange element,...     
5247802 Method for recovering refrigerant Sep-28-1993
A portable refrigerant recovery unit including a compressor, a condenser and an internal receiver or container for recovering refrigerant from a refrigeration unit or other container. A level measuring device determines the level of liquid refrigerant in the internal container. A control device responds...     
5247803 Dual tank refrigerant recovery system Sep-28-1993
A refrigerant recovery system comprises a compressor driven recovery machine having inlet and outlet ports, a primary refrigerant receiving and storage vessel having liquid and vapor ports, and a secondary refrigerant receiving and storage vessel having an inlet. During the refrigerant recovery process...     
5247812 Portable refrigerant purification module Sep-28-1993
Portable, hand carryable acid purification and flushing and transfer systems are provided for use in various refrigerant recovery, recycling and flushing operations performed in conjunction with an air conditioning circuit. The acid purification system is disposed within a carrying housing and includes...     
5263326 Halogenated hydrocarbon recycling machine Nov-23-1993
A halogenated hydrocarbon recycling machine M1 comprising a cylinder-emptying apparatus including means for transferring a vapour mixture from a cylinder 10 to a fluid storage reservoir R1, a cylinder-filling apparatus including means for filling the cylinder 10.sup.1 from the reservoir R1 and a fluid...     
5263331 Refrigerant recovery and recycling system Nov-23-1993
A refrigerant recovery and recycling system recovers refrigerant from refrigeration equipment, removing contaminants, for storage and eventual reuse. The system includes a separation unit in which the refrigerant is separated from the contaminants, preferably by distillation which is at least partially...     
5265440 Temperature control chamber Nov-30-1993
A temperature control chamber is designed for use with refrigerant recovery systems. The temperature control chamber comprises a main base portion, in the form of an upright container, with an open top. A refrigerant storage tank is placed in the container, which has dimensions such that the handle on...     
5269148 Refrigerant recovery unit Dec-14-1993
A refrigerant recovery unit for large refrigerant systems has a suction compressor which withdraws vapor and a liquid pump which withdraws liquid refrigerant. The compressor and liquid pump pass the fluids to a heat exchanger and a condenser, both located within a bath of chilled liquid. The vapor condenses...     
5269150 Regulator for refrigerant reclaimers Dec-14-1993
A regulator for controlling the flow of refrigerant in a refrigerant reclaiming system having a compressor and a condenser, the regulator comprising a condenser regulator section through which the flow of refrigerant passes after exiting the condenser. The condenser regulator section includes a hollow...     
5277033 Refrigerant recovery system Jan-11-1994
A self contained mobile refrigerant recovery and purification system in which refrigerant is withdrawn through a filter/dryer in liquid or vapor phase and then to a holding tank through a heat exchanger located within the tank. The flow of the recovered refrigerant through the heat exchanger is utilized...     
5297399 Manually operated refrigerant recovery device Mar-29-1994
A manually operated refrigerant recovery device is disclosed that includes a piston/cylinder pump combination, wherein the piston defines opposing fluid chambers in the cylinder. A handle is attached via a connecting rod to the piston. First and second one-way check valves are provided at the pump inlet...     
5303564 Refrigerant recovery and purge apparatus Apr-19-1994
An apparatus is disclosed for the recovery, separation and recycling of refrigerant from a number of refrigerant chiller systems having individual low efficiency purgers. The apparatus has a high efficiency purger which reduces refrigerant contaminants in the non-condensable gases vented to atmosphere...     
5311750 Oil collector unit May-17-1994
An oil collector unit of a refrigerant recovery system includes a housing, an interior middle vertical wall disposed in the housing, an interior middle horizontal wall disposed in the housing and intersecting the interior vertical wall and defining left and right pairs of upper and lower chambers on...     
5323808 Refrigerant charge connecting unit Jun-28-1994
A refrigerant charge receptacle (25) is provided for interfacing between an air conditioning system (2) having a high-pressure pipe (241) and a low-pressure pipe (242) and a refrigerant charge apparatus, having a high-pressure charge valve (332a) and a low-pressure charge valve (332b), for charging the...     
5327741 Refrigerant recovery and purification machine Jul-12-1994
A refrigerant recovery machine which includes a distiller, oil separator, filters and an air separator to purify and reclaim refrigerant gas from a cooling system. The air separator may include a dual pressure gauge to regulate partial pressures of air and refrigerant to prevent the refrigerant from...     
5335512 Refrigerant recovery device Aug-9-1994
A single pass refrigerant recovery device recovers refrigerant from a refrigeration system. The device includes at least one hose for withdrawing refrigerant from the refrigeration system and a first oil separator disposed downstream of the refrigerant hose. A filter is disposed downstream from the oil...     
5336065 Manually operated refrigerant recovery device Aug-9-1994
A manually operated refrigerant recovery device is disclosed that includes a piston/cylinder pump combination, wherein the piston defines opposing fluid chambers in the cylinder. A handle is attached via a connecting rod to the piston. First and second one-way check valves are provided at the pump inlet...     
5339646 Apparatus for recovery of refrigerant Aug-23-1994
A method and system for the recovery of refrigerant from a refrigeration system includes a consumable heat sink for rapidly reducing the temperature of a holding vessel to the saturation temperature of the refrigerant so that the refrigerant can be rapidly recovered without requiring a pump or compressor;...     
5357768 Refrigerant reclaim method and apparatus Oct-25-1994
A refrigerant reclaim system includes a compressor, a heat exchanger, an oil separator, a condenser, a chill tank, a filter-dryer and a cooling coil in the chill tank. Refrigerant to be reclaimed is drawn through the cold side of the heat exchanger, converted to a gas which is discharged into the oil...     
5361594 Refrigeration recovery and purification Nov-8-1994
Refrigerant recovery and purification system optionally capable of drawing a nearly full vacuum on the system to be evacuated and having multi-port valve means for setting to different configurations for different refrigerant processing cycles; e.g., evacuation, deep vacuum, recovery, purification cycle,...     
5363666 Manually operated refrigerant recovery device Nov-15-1994
A manually operated refrigerant recovery device is disclosed that includes a piston/cylinder pump combination, wherein the piston defines opposing fluid chambers in the cylinder. A handle is attached via a connecting rod to the piston. First and second one-way check valves are provided at the pump inlet...     
5367888 Apparatus for servicing refrigeration systems Nov-29-1994
Portable apparatus for servicing a refrigeration system having a refrigerant containing an oil lubricant. The apparatus includes a support frame, a modular housing supported by the frame and defining internal accumulator, condenser, storage, and high and low pressure filter chambers, and a control plate...     
5379607 Refrigerant recovery and recycling system Jan-10-1995
A refrigerant recovery and recycling system recovers refrigerant from refrigeration equipment, removing contaminants, for storage and eventual reuse. The system includes a separation unit in which the refrigerant is separated from the contaminants, preferably by distillation which is at least partially...     
5400606 Apparatus for recovering refrigerant Mar-28-1995
An apparatus for recovering refrigerant has an inlet port connected to a refrigeration system from which compressible refrigeration fluid is to be recovered. The inlet port of the apparatus is connected to an inlet port of a first discriminator chamber. An outlet port of the first discriminator chamber...     
5406806 Automatic charge refrigerant transfer system Apr-18-1995
An automatic charge or recharge refrigerant transfer system, increases the percentage of refrigerant transferred from a container to the air conditioning unit to be charged. The suction line of the compressor of the air conditioning unit is connected to the discharge of the transfer unit and the discharge...     
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