US3620038A - Purging apparatus for refrigeration system - Google Patents

Purging apparatus for refrigeration system Download PDF

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Publication number
US3620038A
US3620038A US47059A US3620038DA US3620038A US 3620038 A US3620038 A US 3620038A US 47059 A US47059 A US 47059A US 3620038D A US3620038D A US 3620038DA US 3620038 A US3620038 A US 3620038A
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United States
Prior art keywords
chamber
refrigerant
valve
lubricant
oil
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US47059A
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English (en)
Inventor
Paul W Muench
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York International Corp
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Borg Warner Corp
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Publication of US3620038A publication Critical patent/US3620038A/en
Assigned to YORK INTERNATIONAL CORPORATION, 631 SOUTH RICHLAND AVENUE, YORK, PA 17403, A CORP. OF DE reassignment YORK INTERNATIONAL CORPORATION, 631 SOUTH RICHLAND AVENUE, YORK, PA 17403, A CORP. OF DE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: BORG-WARNER CORPORATION
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F25B43/04—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for withdrawing non-condensible gases
    • F25B43/043—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for withdrawing non-condensible gases for compression type systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B31/00—Compressor arrangements
    • F25B31/002—Lubrication
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B49/00—Arrangement or mounting of control or safety devices
    • F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems

Definitions

  • An apparatus for purging non-condensible gases from a refrigeration system having a chamber receiving a mixture of condensible refrigerant vapor and non-condensible gases from the condenser of the system, a cooling coil in the chamber and using refrigerant from the system to condense the refrigerant vapor, and a com.- pressor lubricant pump connected to the chamber and supplying oil under pressure to the chamber and providing a liquid piston effective to force the non-condensible gases from the chamber through a relief valve to the atmosphere and also providing means effective to draw the condensed liquid refrigerant and cooled oil mixture into the compressor lubricant reservoir and return of the refrigerant to the system.
  • This invention relates to apparatus for purging noncondensible gases from a vapor-cycle refrigeration system.
  • a further object of the invention is to provide a refrigeration system purge apparatus utilizing a conventional compressor lubricant pump to provide lubricant under pressure to compress mixtures of refrigerant vapor and non-condensibles, and to purge the non-condensible gases from the system.
  • Another object of the invention is to provide an improved apparatus for purging non-condensible gases from a refrigeration system while condensing refrigerant vapors to liquid form and mixture of the liquid with the lubricant for the compressor of the system and return of the mixture to the lube sump where the refrigerant is vaporized and returned to the system.
  • Another object of the invention is to provide a refrigeration system purge apparatus which operates automatically as needed, without operator attention, and can be utilized in different systems without change, modification or redesign of the system.
  • FIG. 1 is a diagrammatic illustration of a conventional type refrigeration machine showing the improved apparatus of the present invention associated therewith, parts being shown in section;
  • FIG. 2 is a schematic diagram of the electrical control circuit.
  • FIG. 1 there is shown a refrigeration machine having an evaporator 10, a condenser 11, and a motor-compressor 12.
  • a tube bundle 13 in evaporator 10 is provided for passing the medium. to be cooled therethrough while tube bundle 14 in condenser 11 is provided for passing cooling water from a suitable source through the condenser to cool the compressed refrigerant and cause it to condense therein.
  • the condensed refrigerant is collected in a chamber 15.
  • a restrictor 16 regulates the flow of liquid refrigerant from chamber 1 5 to evaporator 10.
  • the motor-compressor unit 12 is provided with a drive motor 18, drive gearing 17, (if necessary) and a compressor 20.
  • a pump 22, associated with lubricant sump 19, provides lubricant to the bearings in compressor 20, drive motor 18 and to gearing -17 through a lubricant supply circuit 23.
  • Lubricant drain circuit .21 returns oil to the sump.
  • a vent line 24 between sump and the compressor inlet or any portion of the machine below condenser pressure is provided to vent gaseous refrigerant to the compressor.
  • the present invention is more particularly directed to a purge unit or apparatus 25 designed to purge non-condensible gases, such as air, from the refrigeration system while condensing refrigerant vapors to liquid form and mixture of the liquid refrigerant with the lubricant for the compressor, the mixture of oil and refrigerant then returning to the sump 519, the refrigerant then being vaporized and returned to the system.
  • the apparatus 25 includes an upright heat exchanger shell 26 having a chamber 27 connected to condenser 11 by a small line 28 for flow of non-condensible gases and refrigerant vapor from condenser 11 to chamber 27.
  • a check valve 29 is provided in line 28 to prevent back-flow to the condenser.
  • Orifice 47 meters the flow rate of gas entering shell 26.
  • a heat exchange coil '30 is arranged within the shell 26 and positioned in a manner that the coil surface occupies a substantial portion of the chamber 27 and is disposed along the length thereof. Accordingly, oil, refrigerant and gases within chamber 27 must traverse the coil surfaces.
  • Liquid refrigerant from chamber 15 flows through a metering orifice 48, through heat exchanger coil 30, and returns to evaporator 10 by Way of line 32. Because of the orifice, the pressure in coil is substantially that of the evaporator, so the Coil is cooled to approximately evaporator temperature whenever the machine is running.
  • the compressor lubricant pump 22 is operative to force lubricant oil from sump 19 through line 34 in supply circuit 23 to a three way solenoid valve 35.
  • the valve in one position thereof, connects line 34 to line 37 in order to supply oil to chamber 27. In a second position of the valve, the valve is effective to disconnect line 37 from line 34 and connect line 37 with line 36 to drain the cham ber back to the lube sump 19.
  • the solenoid operator, 49 connected to valve 35, is energizable to change the valve from its first to its second position. Upon de-energizing the solenoid, a spring returns the valve to its first position.
  • Float-switch 38, 39 is located near the top of the chamber and float-switch 40, 41 is located near the bottom of the chamber.
  • Switches 39 and 41 and solenoid operator 49 are connected in an electrical circuit, illustrated in FIG. 2, such that upon drop of a liquid level to float 40, the operator is energized, allowing oil to flow into chamber 27.
  • the valve Upon rise of a liquid level to float 38, the valve is de-energized, allowing liquid in the chamber to drain into sump 19.
  • the solenoid valve and float switches will operate cyclically to fill and drain chamber 27 of oil.
  • a pressure operated relief valve 33 is connected to the top of shell 26 and communicates with chamber 27.
  • the valve is responsive to pressure in chamber 27 such that it opens upon a rise of pressure above a preset value and closes upon a decrease of pressure below tht preset value.
  • refrigerant vapor and non-condensible gases from condenser 11 may enter the bottom of chamber 27.
  • the vapor and gas will bubble upward through the oil in the chamber.
  • Refrigerant vapor will tend to dissolve in the oil, or condense on the cold coil above the oil and drain down into the oil. Any non-condensible gas will tend to be trapped in the chamber above the oil.
  • valve When valve is in the second setting, and oil is filling chamber 27, any non-condensible gas trapped above the oil is being decreased in volume. This will cause the pressure in chamber 27 to rise. When the pressure in chamber 27 equals that of condenser 11, flow of vapor and gas into the chamber ceases and check valve 29 closes. Continued flow of oil into the chamber compresses non-condensible gas above the oil in chamber 27. If the pressure in chamber 27 exceeds the setting value of relief valve 33, it opens and allows the non-condensible gas to flow out to the atmosphere.
  • Relief valve 33 is set at a pressure slightly lower than oil supply pressure.
  • the oil rises nearly to the top of the chamber, expelling most of the non-condensible gas, actuates float-switch 38, 39 which opens the circuit (FIG. 2) through relay R, opens switches R and R and changes the setting of valve 35 to its first setting, to stop supplying oil and start draining the oil-refrigerant solution from chamber 27 to sump 19.
  • the described cycle continues during the operation of the refrigeration machine.
  • the purging apparatus 25 automatically discontinues operation as oil pressure is non-existent.
  • said gas evacuation control means comprises means responsive to the compression of said gases by said lubricant under pressure.
  • the lubricant flow controlling means includes a valve in said fluid circuit, and means controlling operation of said valve in response to changes in the volume of lubricant in said chamber.
  • the lubricant flow controlling means is a valve in said fluid circuit and having a first operative position to divert lubricant under pressure from said circuit to said chamber and having a second operative position to provide lubricant flow through said circuit and thereby drawing of the condensed refrigerant and cooled lubricant mixture from said chamber into said circuit; and means for returning the condensed refrigerant in said circuit to the system.
  • valve control means includes a solenoid operatively connected to said valve.
  • valve control means includes a solenoid operatively connected to said valve, an electric circuit for said solenoid and including a switch controlling energization of said solenoid, and float means in said chamber and controlling actuation of said switch in response to different levels of the mixture in said chamber.
  • valve control means includes a solenoid for operating said valve, an electric circuit for said solenoid and including a switch and float means in said chamber and operating said switch to energize said solenoid to move said valve to said first position whenthe level of said mixture in said chamber rises to a predetermined upper level, and to move said valve to said second position when the level of said mixture in said chamber drops to a predetermined low level.
  • the combination as defined in claim 5 including a housing for said compressor; and said lubricant circuit includes a lubricant sump in said housing, a lubricant pump, a first conduit connecting said pump to said compressor for circulating lubricant under pressure from said sump to said compressor and return to said sump; and said refrigerant-returning means includes a second conduit connecting said housing and compressor inlet to vent refrigerant vapors in said housing to the compressor.
US47059A 1970-06-17 1970-06-17 Purging apparatus for refrigeration system Expired - Lifetime US3620038A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US4705970A 1970-06-17 1970-06-17

Publications (1)

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US3620038A true US3620038A (en) 1971-11-16

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US47059A Expired - Lifetime US3620038A (en) 1970-06-17 1970-06-17 Purging apparatus for refrigeration system

Country Status (5)

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US (1) US3620038A (fr)
CA (1) CA936007A (fr)
DE (1) DE2129949C3 (fr)
FR (1) FR2095320B1 (fr)
GB (1) GB1333186A (fr)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4267705A (en) * 1979-09-12 1981-05-19 Carrier Corporation Refrigeration purging system
US5031410A (en) * 1990-02-21 1991-07-16 American Standard Inc. Refrigeration system thermal purge apparatus
US5040382A (en) * 1990-06-19 1991-08-20 501 Wynn's Climate Systems, Inc. Refrigerant recovery system
US5113927A (en) * 1991-03-27 1992-05-19 Ormat Turbines (1965) Ltd. Means for purging noncondensable gases from condensers
US5119635A (en) * 1989-06-29 1992-06-09 Ormat Turbines (1965) Ltd. Method of a means for purging non-condensable gases from condensers
US5241837A (en) * 1991-11-19 1993-09-07 Redi Controls, Inc. Double pass purge system
US5337578A (en) * 1993-02-19 1994-08-16 Wynn's Climate Systems, Inc. Trapped air monitor for a refrigerant recovery unit
US5367886A (en) * 1993-08-02 1994-11-29 Spx Corporation Refrigerant handling system with air purge and system clearing capabilities
US5517825A (en) * 1994-09-30 1996-05-21 Spx Corporation Refrigerant handling system and method with air purge and system clearing capabilities
US5582019A (en) * 1995-05-08 1996-12-10 Emerson Electric Company Method and apparatus for recovering and purging refrigerant
US5806322A (en) * 1997-04-07 1998-09-15 York International Refrigerant recovery method
JP2016023913A (ja) * 2014-07-24 2016-02-08 荏原冷熱システム株式会社 冷凍機用凝縮器
US20160054040A1 (en) * 2013-05-02 2016-02-25 Carrier Corporation Compressor Bearing Cooling Via Purge Unit
JP2016514241A (ja) * 2013-02-21 2016-05-19 ジョンソン コントロールズ テクノロジー カンパニーＪｏｈｎｓｏｎ Ｃｏｎｔｒｏｌｓ Ｔｅｃｈｎｏｌｏｇｙ Ｃｏｍｐａｎｙ 潤滑および冷却システム
WO2017069677A1 (fr) * 2015-10-22 2017-04-27 Qtf Sweden Ab Procédé de dégazage de mélanges liquides à faibles points d'ébullition dans des systèmes fermés
WO2017148936A1 (fr) * 2016-03-02 2017-09-08 Efficient Energy Gmbh Pompe à chaleur dotée d'un piège à gaz, procédé de fonctionnement d'une pompe à chaleur dotée d'un piège à gaz et procédé de fabrication d'une pompe à chaleur dotée d'un piège à gaz
WO2024077250A1 (fr) * 2022-10-07 2024-04-11 Johnson Controls Tyco IP Holdings LLP Système de réfrigération ayant une charge de poussée de compresseur réduite

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL94866A (en) * 1989-06-29 1995-10-31 Ormat Ind Ltd Method of and means for purging noncondensable gases from condensors or the like
US5487765A (en) * 1991-03-27 1996-01-30 Ormat Turbines (1965) Ltd. Apparatus for purging non-condensable gases from condensers

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4267705A (en) * 1979-09-12 1981-05-19 Carrier Corporation Refrigeration purging system
US5119635A (en) * 1989-06-29 1992-06-09 Ormat Turbines (1965) Ltd. Method of a means for purging non-condensable gases from condensers
US5031410A (en) * 1990-02-21 1991-07-16 American Standard Inc. Refrigeration system thermal purge apparatus
US5040382A (en) * 1990-06-19 1991-08-20 501 Wynn's Climate Systems, Inc. Refrigerant recovery system
US5113927A (en) * 1991-03-27 1992-05-19 Ormat Turbines (1965) Ltd. Means for purging noncondensable gases from condensers
US5241837A (en) * 1991-11-19 1993-09-07 Redi Controls, Inc. Double pass purge system
US5337578A (en) * 1993-02-19 1994-08-16 Wynn's Climate Systems, Inc. Trapped air monitor for a refrigerant recovery unit
US5367886A (en) * 1993-08-02 1994-11-29 Spx Corporation Refrigerant handling system with air purge and system clearing capabilities
US5517825A (en) * 1994-09-30 1996-05-21 Spx Corporation Refrigerant handling system and method with air purge and system clearing capabilities
US5582019A (en) * 1995-05-08 1996-12-10 Emerson Electric Company Method and apparatus for recovering and purging refrigerant
US5806322A (en) * 1997-04-07 1998-09-15 York International Refrigerant recovery method
US5910160A (en) * 1997-04-07 1999-06-08 York International Corporation Enhanced refrigerant recovery system
JP2016514241A (ja) * 2013-02-21 2016-05-19 ジョンソン コントロールズ テクノロジー カンパニーＪｏｈｎｓｏｎ Ｃｏｎｔｒｏｌｓ Ｔｅｃｈｎｏｌｏｇｙ Ｃｏｍｐａｎｙ 潤滑および冷却システム
US10197316B2 (en) 2013-02-21 2019-02-05 Johnson Controls Technology Company Lubrication and cooling system
US10941967B2 (en) 2013-02-21 2021-03-09 Johnson Controls Technology Company Lubrication and cooling system
US20160054040A1 (en) * 2013-05-02 2016-02-25 Carrier Corporation Compressor Bearing Cooling Via Purge Unit
US10539352B2 (en) 2013-05-02 2020-01-21 Carrier Corporation Compressor bearing cooling via purge unit
JP2016023913A (ja) * 2014-07-24 2016-02-08 荏原冷熱システム株式会社 冷凍機用凝縮器
WO2017069677A1 (fr) * 2015-10-22 2017-04-27 Qtf Sweden Ab Procédé de dégazage de mélanges liquides à faibles points d'ébullition dans des systèmes fermés
WO2017148936A1 (fr) * 2016-03-02 2017-09-08 Efficient Energy Gmbh Pompe à chaleur dotée d'un piège à gaz, procédé de fonctionnement d'une pompe à chaleur dotée d'un piège à gaz et procédé de fabrication d'une pompe à chaleur dotée d'un piège à gaz
JP2019507311A (ja) * 2016-03-02 2019-03-14 エフィシエント・エネルギ・ゲーエムベーハー ガストラップを有するヒートポンプ、ガストラップの動作方法、およびガストラップを有するヒートポンプの製造方法
US10921031B2 (en) 2016-03-02 2021-02-16 Efficient Energy Gmbh Heat pump with a gas trap, method for operating with a gas trap, and method for producing a heat pump with a gas trap
WO2024077250A1 (fr) * 2022-10-07 2024-04-11 Johnson Controls Tyco IP Holdings LLP Système de réfrigération ayant une charge de poussée de compresseur réduite

Also Published As

Publication number Publication date
GB1333186A (en) 1973-10-10
FR2095320A1 (fr) 1972-02-11
CA936007A (en) 1973-10-30
DE2129949C3 (de) 1978-10-19
FR2095320B1 (fr) 1973-06-29
DE2129949B2 (de) 1978-02-16
DE2129949A1 (de) 1971-12-23

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Legal Events

Date Code Title Description
AS Assignment

Owner name: YORK INTERNATIONAL CORPORATION, 631 SOUTH RICHLAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST. EFFECTIVE;ASSIGNOR:BORG-WARNER CORPORATION;REEL/FRAME:004676/0360

Effective date: 19860609