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CA2053929A1 - Method and apparatus for recovering and purifying refrigerant - Google Patents

Method and apparatus for recovering and purifying refrigerant

Info

Publication number
CA2053929A1
CA2053929A1 CA2053929A CA2053929A CA2053929A1 CA 2053929 A1 CA2053929 A1 CA 2053929A1 CA 2053929 A CA2053929 A CA 2053929A CA 2053929 A CA2053929 A CA 2053929A CA 2053929 A1 CA2053929 A1 CA 2053929A1
Authority
CA
Canada
Prior art keywords
refrigerant
recovery
storage means
compressor
liquid
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.)
Granted
Application number
CA2053929A
Other languages
French (fr)
Other versions
CA2053929C (en
Inventor
Lowell E. Paige
Chester D. Ripka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Carrier Corp
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from US07/612,643 external-priority patent/US5127232A/en
Priority claimed from US07/612,641 external-priority patent/US5174124A/en
Application filed by Individual filed Critical Individual
Publication of CA2053929A1 publication Critical patent/CA2053929A1/en
Application granted granted Critical
Publication of CA2053929C publication Critical patent/CA2053929C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • F25B45/00—Arrangements for charging or discharging refrigerant
    • 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
    • F25B2345/00—Details for charging or discharging refrigerants; Service stations therefor
    • F25B2345/002—Collecting refrigerant from a cycle

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Air Conditioning Control Device (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Drying Of Gases (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Abstract

ABSTRACT OF THE DISCLOSURE
A method and apparatus for recovering and purifying refrigerant contained in a refrigeration system has a first mode of operation wherein refrigerant is withdrawn from the system being serviced, compressed, condensed and delivered in liquid form to a refrigerant storage means. The pressure ratio across the recovery compressor is monitored, and, when the pressure ratio exceeds a value above which the compressor may be adversely affected withdrawal of the refrigerant from the refrigeration system is terminated. The system is then operated in a closed, cooling mode wherein refrigerant recovered from the system and stored in the storage means is withdrawn therefrom by the compressor, compressed condensed, and expanded and returned to the storage means to thereby lower the temperature and pressure of the storage means and the refrigerant contained therein. Means for purifying the withdrawn refrigerant are located upstream from the compressor suction port so that refrigerant purification takes place during all modes of operation. When the temperature in the refrigerant storage cylinder falls to a predetermined level the system is returned to the recovery mode. During the second recovery cycle, because of the substantially lower temperature in the recovery system, the refrigerant storage cylinder effectively serves as a condenser.

The system may be operated in a liquid recovery cycle wherein liquid refrigerant is delivered directly to the storage means.
The system is shifted from liquid recovery to vapor recovery responsive to, either, a decrease in liquid level increase in the storage means, or, several system control parameters.
Apparatus for sampling the purity of refrigerant flowing through the recovery system is provided.
CA002053929A 1990-11-13 1991-10-22 Method and apparatus for recovering and purifying refrigerant Expired - Fee Related CA2053929C (en)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US61263890A 1990-11-13 1990-11-13
US61264290A 1990-11-13 1990-11-13
US612,638 1990-11-13
US612,641 1990-11-13
US07/612,643 US5127232A (en) 1990-11-13 1990-11-13 Method and apparatus for recovering and purifying refrigerant
US612,643 1990-11-13
US612,642 1990-11-13
US07/612,641 US5174124A (en) 1990-11-13 1990-11-13 Apparatus for sampling the purity of refrigerant flowing through a refrigeration circuit

Publications (2)

Publication Number Publication Date
CA2053929A1 true CA2053929A1 (en) 1992-05-14
CA2053929C CA2053929C (en) 1994-05-03

Family

ID=27505111

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002053929A Expired - Fee Related CA2053929C (en) 1990-11-13 1991-10-22 Method and apparatus for recovering and purifying refrigerant

Country Status (7)

Country Link
EP (1) EP0485873B1 (en)
JP (1) JPH04268178A (en)
KR (1) KR950014471B1 (en)
AU (1) AU650919B2 (en)
CA (1) CA2053929C (en)
DE (1) DE69101964T2 (en)
ES (1) ES2053261T3 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5146760A (en) * 1991-06-17 1992-09-15 Carrier Corporation Method and apparatus for compressor protection in a refrigerant recovery system
US5146761A (en) * 1991-06-17 1992-09-15 Carrier Corporation Method and apparatus for recovering refrigerant
US5181390A (en) * 1992-01-02 1993-01-26 Cavanaugh Wayne B Manually operated refrigerant recovery apparatus
FR2758998B1 (en) * 1997-02-05 1999-04-02 Dehon Sa Anciens Etablissement METHOD FOR REGENERATING A POLLUTED FLUID AND INSTALLATION FOR IMPLEMENTING THE METHOD
JP4538980B2 (en) * 2001-04-20 2010-09-08 三菱電機株式会社 Refrigerant recovery device and recovery method
JP2002350014A (en) * 2001-05-22 2002-12-04 Daikin Ind Ltd Refrigeration equipment
CN111829217A (en) * 2020-08-04 2020-10-27 北京美德瑞科技有限公司 Refrigerant recovery machine push-pull recovery and normal recovery automatic conversion system
CN112856864B (en) * 2021-01-16 2023-07-21 北海职业学院 A Refrigerant Purification System
CN114215734B (en) * 2021-11-05 2024-03-19 合肥通用机械研究院有限公司 Low-pressure working medium complete recovery system and recovery method for compressor testing device

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4285206A (en) * 1979-02-05 1981-08-25 Draf Tool Co., Inc. Automatic refrigerant recovery, purification and recharge apparatus
US4441330A (en) * 1980-12-01 1984-04-10 Robinair Manufacturing Corporation Refrigerant recovery and recharging system
US4923806A (en) * 1985-06-14 1990-05-08 Carrier Corporation Method and apparatus for refrigerant testing in a closed system
US4646527A (en) * 1985-10-22 1987-03-03 Taylor Shelton E Refrigerant recovery and purification system
WO1989012792A1 (en) * 1988-06-24 1989-12-28 Murray Corporation Method and apparatus for full evacuation of air conditioner or refrigeration system
JPH076710B2 (en) * 1989-01-30 1995-01-30 ダイキン工業株式会社 Refrigerant recovery device
JP2770181B2 (en) * 1989-02-04 1998-06-25 サンデン株式会社 CFC recovery device
FR2645948B1 (en) * 1989-04-14 1994-12-09 Mathieu Christian INSTALLATION FOR RECOVERING A REFRIGERANT FLUID, ESPECIALLY CHLOROFLUOROCARBON
US4981020A (en) * 1990-02-02 1991-01-01 Scuderi Carmelo J Apparatus for recovering refrigerant

Also Published As

Publication number Publication date
CA2053929C (en) 1994-05-03
EP0485873B1 (en) 1994-05-11
EP0485873A1 (en) 1992-05-20
KR920010231A (en) 1992-06-26
ES2053261T3 (en) 1994-07-16
JPH04268178A (en) 1992-09-24
DE69101964D1 (en) 1994-06-16
DE69101964T2 (en) 1994-12-15
KR950014471B1 (en) 1995-11-28
AU8778691A (en) 1992-05-14
AU650919B2 (en) 1994-07-07

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed