WO1989006336A1 - Systeme de recuperation de refrigerant - Google Patents

Systeme de recuperation de refrigerant Download PDF

Info

Publication number
WO1989006336A1
WO1989006336A1 PCT/US1989/000094 US8900094W WO8906336A1 WO 1989006336 A1 WO1989006336 A1 WO 1989006336A1 US 8900094 W US8900094 W US 8900094W WO 8906336 A1 WO8906336 A1 WO 8906336A1
Authority
WO
WIPO (PCT)
Prior art keywords
refrigerant
jacket
fluid
pressure
vessel
Prior art date
Application number
PCT/US1989/000094
Other languages
English (en)
Inventor
Thomas Duran Merritt
Original Assignee
Thomas Duran Merritt
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 US07/255,960 external-priority patent/US4903499A/en
Application filed by Thomas Duran Merritt filed Critical Thomas Duran Merritt
Priority to JP1501667A priority Critical patent/JPH06511545A/ja
Priority to BR898907326A priority patent/BR8907326A/pt
Publication of WO1989006336A1 publication Critical patent/WO1989006336A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00507—Details, e.g. mounting arrangements, desaeration devices
    • B60H1/00585—Means for monitoring, testing or servicing the air-conditioning
    • 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

Definitions

  • holes in the ozone layer, including one over the Antarctica having an area of more than a million square miles.
  • the protection of the ozone layer against further deterioration is basically a two-fold matter, namely, that of the reduction of production of CFC's, and, secondly, the control of the release of CFG's into the atmosphere.
  • the present invention addresses the above problem of CFC/Freon recovery from air conditioning and refrigeration system in the course of repair or replacement of such systems.
  • the invention is a system for refrigerant recovery and purification. It includes a hollow fluid -tight pressure vessel having fluid input means; and a hollow, annular jacket having its exterior inner surface in thermal communication with said pressure vessel, said jacket having a polar axis in substantial alignment with the gravity vector, said jacket having liquid accumulation means at the bottom thereof, said jacket further having fluid output means. Also provided is fluid communication means for defining a fluid path, external of said vessel, between said vessel and an input to said jacket, said fluid communication means further comprising expansion valve means for selectively increasing the volume of fluid flowing from said vessel prior to its entry into said jacket. Condensing means are in fluid communication with said output means, said condensing means having an output in fluid communication with said input means of said pressure vessel,
  • Fig. 1 is a schematic view of the present inventive refrigerant recovery system.
  • Fig. 2 is an enlarged area of the view of Fig. 1 with specific reference to the condensing means and heating means.
  • Fig. 3 is a schematic view of an alternate embodiment of the pressure vessel and jacket means.
  • FIG. 1 With reference to Fig. 1, there is shown, to the left of the figure, the system 8 to be evacuated.
  • This system includes a compressor 10, a condenser 12, an evaporator 14, a liquid line service valve 16 and a liquid receiver 17.
  • the interface or tap between the present inventive refrigerant recovery device and the system 8 uses manifold gauges 7. he center hose is attached at connection 18.
  • the low pressure hose of manifold gauges 7 connects to a suction service valve 11.
  • a high pressure hose of manifold gauges 7 connects to said liquid service valve 16.
  • This method of connection is useful when large amounts of liquid refrigerant are present within the system being evacuated.
  • An alternate method of connection places the low pressure hose of manifold gauges 7 at suction service valve 11 while the high pressure hose of gauges 7 connects to service valve 16 and the center hose connects to valve 65. This method is useful in the automotive area where only vapor is generally available for recovery.
  • a high pressure liquid refrigerant line 18 carries liquid refrigerant from the evacuated system 8 to a metering device 24.
  • the function of the metering device is to controllably permit an expansion of the refrigerant liquid thereby creating a pressure differential between the high pressure liquid refrigerant line 18 and the inside of annular jacket 26 at a substantially lower pressure.
  • the pressure within high pressure liquid refrigerant line 18 will, at conditions of 90 degrees Fahrenheit and R12 refrigerant, be 90 psi while the conditions within annular jacket 26 will be about 20 pounds per square inch.
  • Annular jacket 26 surrounds special purpose storage bottle 28 which is provided with a valve-operated drain 31. Within said jacket 26 there is formed a so called puddle 27 of refrigerant. This puddle will form within jacket 26 when a sufficient volume of low pressure gas accumulates therewithin. From puddle 27, which is technically known as a flooding evaporator, refrigerant will be drawn through a perforated suction tube 29.- Liquid refrigerant, from the end of said tube 29, will be drawn from puddle 27 while the perforations therewithin will draw gas from the portion of said jacket above said puddle 27. Accordingly, a combination of both liquid and vapor refrigerant will enter a low pressure suction line 30. This combination of fluid may be considered a boiling liquid, and its condition as between a liquid or vapor will be determined by various system variables.
  • low pressure suction line 30 From low pressure suction line 30, the boiling liquid refrigerant travels to the right, passing a low pressure gauge 47. Therefrom (see Fig. 2 for enlarged view) refrigerant enters suction dryer means 36. Suction dryer means 36 performs the functions of filtering and drying. As may be noted in Fig. 2, low pressure suction line 30 is in fluid communication with suction dryer means 36 and refrigerant exits at connection line 68. Below connection line 68 is shown an oil trap 33, the function of which is to remove oil from the boiling liquid refrigerant. This oil trap exists for the purpose of protecting the compressor 40 from the introduction of oils, moisture, or any other contaminants, from the system being evacuated.
  • jacket means 26 constitutes a segmented evaporator in which the superheat therein is controlled by either (1) an automatic expansion valve responding to compressor capacity, (2) a thermostatic expansion valve responding to a bulb positioned at point 67, or (3) any other known metering device.
  • connection line 68 the refrigerant enters suction dryer 66, having a heat strip 65, which performs the function of a second dryer, and further protects compressor 40 from liquid refrigerant entering thereto.
  • Said heat strip 65 is controlled by a temperature sensor on line 32. Accordingly, the refrigerant, upon exiting from 66 is assured to be in the vapor state.
  • gaseous refrigerant travels through low pressure vapor suction line 32 and passes point 38 which is the connecting point for a low pressure control switch, i the function of which is to turn off the entire system, including compressor 40, in the event of zero pressure..
  • the low pressure vapor refrigerant is compressed in order to create a high pressure gaseous refrigerant output which passes through high pressure hot vapor line 48.
  • This line then travels to oil separator 44, the function of which is to assure that compressor 40 is at all times supplied with oil.
  • oil return line 46 which connects oil separator 44 to low pressure suction line 32.
  • the high pressure gaseous refrigerant passes through high pressure hot vapor extension line 49 into air cooled condenser 52 which functions to reduce the temperature of the refrigerant passing by high pressure gauge 54.
  • the refrigerant then passes from air cooled condenser 52 to a reduced temperature high pressure line 57.
  • condensed refrigerant enters high pressure water cooled refrigerant line 55, where further cooling is achieved by water cooled condenser 53 bringing the refrigerant into a liquid state.
  • water cooled condenser 53 tap water is used which in certain areas of the country may be as warm as 70 degrees. In other areas it may be about 60 degrees.
  • the liquified refrigerant Upon exiting the water cooled condenser 53, the liquified refrigerant passes through high pressure liquid line 62 into one way valve 56.
  • the one way valve prevents refrigerant from flowing back from the special bottle 28 into the system when bottle pressure is higher than the system pressure. Further, it allows the refrigerant to flow into the bottle when the system pressure is higher than the bottle pressure. From one way valve 56 the liquid refrigerant flows through high pressure liquid line 62 and into bottle access valve 64 where storage of the recycled, recovered refrigerant is effected.
  • jacket 26 one of the functions of jacket 26 is to maintain bottle 28 at a low temperature to thereby enhance the overall efficiency of the system.
  • valve 51 When valve 51 is de-energized the system pumps down and shuts off automatically, returning the refrigerant to the storage bottle.
  • Fig. 3 Shown in Fig. 3 is an alternate embodiment of the invention in which jacket 26 is replaced by separate regions 126 which function in the manner of said jacket 26.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Sorption Type Refrigeration Machines (AREA)

Abstract

Un système de récupération et de traitement de réfrigérant comprend un réservoir (28) creux sous pression imperméable aux fluides et pourvu d'une amenée de fluide (64); une enveloppe annulaire creuse (26) dont la surface interne est en communication thermique avec le réservoir sous pression et dont l'axe polaire est essentiellement aligné avec le vecteur gravitationnel est pourvue sur son fond d'un accumulateur de liquide (27) et d'une ligne d'amenée (18) en communication liquide avec le système de réfrigération de façon à pouvoir être éventée pendant un processus de récupération. Cette ligne d'amenée est également en communication fluide avec le réservoir sous pression pendant le retraitement du réfrigérant. L'amenée de la ligne de réfrigérant est en outre pourvue d'un détendeur de liquide (24) qui sert à augmenter sélectivement le volume du fluide qui s'écoule du réservoir ou du système de réfrigération que l'on veut éventer. Un condenseur (53) est en communication fluide avec l'amenée du réservoir sous pression.
PCT/US1989/000094 1988-01-11 1989-01-11 Systeme de recuperation de refrigerant WO1989006336A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP1501667A JPH06511545A (ja) 1988-01-11 1989-01-11 冷媒回収設備
BR898907326A BR8907326A (pt) 1988-10-11 1989-01-11 Sistemas para recuperacao e purificacao de refrigerante

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US14181188A 1988-01-11 1988-01-11
US141,811 1988-01-11
US18252888A 1988-04-18 1988-04-18
US182,528 1988-04-18
US255,960 1988-10-11
US07/255,960 US4903499A (en) 1988-01-11 1988-10-11 Refrigerant recovery system

Publications (1)

Publication Number Publication Date
WO1989006336A1 true WO1989006336A1 (fr) 1989-07-13

Family

ID=27385712

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1989/000094 WO1989006336A1 (fr) 1988-01-11 1989-01-11 Systeme de recuperation de refrigerant

Country Status (3)

Country Link
EP (1) EP0421999A4 (fr)
AU (1) AU3031589A (fr)
WO (1) WO1989006336A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0431335A2 (fr) * 1989-11-28 1991-06-12 Electrolux Siegen Gmbh Dispositif pour décharger le réfrigérant de systèmes frigorifiques à absorption
US5163462A (en) * 1989-08-25 1992-11-17 Leemput Geert H Apparatus for tapping a fluid through a wall
CN105180535A (zh) * 2015-09-28 2015-12-23 合肥欧恩易机电科技有限公司 一种制冷剂灌注机

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3232070A (en) * 1963-05-17 1966-02-01 Spormac Sales Company Refrigerant saver
US3664147A (en) * 1970-08-19 1972-05-23 Carolina Prod Inc Purge apparatus for refrigeration system
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
US4476688A (en) * 1983-02-18 1984-10-16 Goddard Lawrence A Refrigerant recovery and purification system
US4539817A (en) * 1983-12-23 1985-09-10 Staggs Michael J Refrigerant recovery and charging device
US4646527A (en) * 1985-10-22 1987-03-03 Taylor Shelton E Refrigerant recovery and purification system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2930404A1 (de) * 1979-07-26 1981-03-12 1000 Berlin Erich Schultze KG Versorgungs- und schutzeinrichtung fuer kaelteanlagen.

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3232070A (en) * 1963-05-17 1966-02-01 Spormac Sales Company Refrigerant saver
US3664147A (en) * 1970-08-19 1972-05-23 Carolina Prod Inc Purge apparatus for refrigeration system
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
US4476688A (en) * 1983-02-18 1984-10-16 Goddard Lawrence A Refrigerant recovery and purification system
US4539817A (en) * 1983-12-23 1985-09-10 Staggs Michael J Refrigerant recovery and charging device
US4646527A (en) * 1985-10-22 1987-03-03 Taylor Shelton E Refrigerant recovery and purification system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP0421999A4 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5163462A (en) * 1989-08-25 1992-11-17 Leemput Geert H Apparatus for tapping a fluid through a wall
EP0431335A2 (fr) * 1989-11-28 1991-06-12 Electrolux Siegen Gmbh Dispositif pour décharger le réfrigérant de systèmes frigorifiques à absorption
EP0431335A3 (en) * 1989-11-28 1991-06-19 Electrolux Siegen Gmbh Refrigerant discharging device for absorption refrigeration systems
CN105180535A (zh) * 2015-09-28 2015-12-23 合肥欧恩易机电科技有限公司 一种制冷剂灌注机
CN105180535B (zh) * 2015-09-28 2017-08-29 合肥欧恩易机电科技有限公司 一种制冷剂灌注机

Also Published As

Publication number Publication date
EP0421999A4 (en) 1992-01-15
AU3031589A (en) 1989-08-01
EP0421999A1 (fr) 1991-04-17

Similar Documents

Publication Publication Date Title
US4903499A (en) Refrigerant recovery system
US4476688A (en) Refrigerant recovery and purification system
US5548966A (en) Refrigerant recovery system
US5195333A (en) Refrigerant reclaim method and apparatus
US5277032A (en) Apparatus for recovering and recycling refrigerants
US6016661A (en) Refrigerant recovery system
US4939903A (en) Refrigerant recovery and purification system and method
US5086630A (en) Refrigerant reclaim apparatus
US5230224A (en) Refrigerant recovery system
US5245840A (en) Refrigerant reclaim method and apparatus
US5123259A (en) Refrigerant recovery system
US4967570A (en) Refrigerant reclaim method and apparatus
US5022230A (en) Method and apparatus for reclaiming a refrigerant
US5359859A (en) Method and apparatus for recovering refrigerants
US5247802A (en) Method for recovering refrigerant
US5761924A (en) Refrigerant recycling apparatus and method
US5176008A (en) Refrigerant reclaim method and apparatus
US5327735A (en) Refrigerant reclaiming and recycling system with evaporator chill bath
US5265432A (en) Oil purifying device for use with a refrigeration system
US5050401A (en) Compact refrigerant reclaim apparatus
CA1328355C (fr) Methode et appareil de recuperation de frigorigene
US5685161A (en) Refrigerant recovery and recycling apparatus
US5442930A (en) One step refrigerant recover/recycle and reclaim unit
US5101641A (en) Compact refrigerant reclaim apparatus
US5189882A (en) Refrigerant recovery method

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AU BR JP

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE FR GB IT LU NL SE

WWE Wipo information: entry into national phase

Ref document number: 1989901803

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 1989901803

Country of ref document: EP

WWR Wipo information: refused in national office

Ref document number: 1989901803

Country of ref document: EP

WWW Wipo information: withdrawn in national office

Ref document number: 1989901803

Country of ref document: EP