US3483714A - Liquid trapping device - Google Patents

Liquid trapping device Download PDF

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Publication number
US3483714A
US3483714A US742634A US3483714DA US3483714A US 3483714 A US3483714 A US 3483714A US 742634 A US742634 A US 742634A US 3483714D A US3483714D A US 3483714DA US 3483714 A US3483714 A US 3483714A
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US
United States
Prior art keywords
outlet
refrigerant
liquid
chamber
compressor
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
US742634A
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English (en)
Inventor
Walter O Krause
Kenneth W Rupert
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.)
VIRGINIA KMP Corp A CORP OF TX
Original Assignee
Virginia Chemicals Inc
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Filing date
Publication date
Application filed by Virginia Chemicals Inc filed Critical Virginia Chemicals Inc
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Publication of US3483714A publication Critical patent/US3483714A/en
Assigned to VIRGINIA CHEMICALS INC., A CORP. OF DE. reassignment VIRGINIA CHEMICALS INC., A CORP. OF DE. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: VIRGINIA CHEMICALS INC., A CORP. OF MAINE
Assigned to VIRGINIA KMP CORPORATION, A CORP OF TX reassignment VIRGINIA KMP CORPORATION, A CORP OF TX ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: VIRGINIA CHEMICALS INC.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F25B43/006—Accumulators
    • 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
    • F25B2341/00—Details of ejectors not being used as compression device; Details of flow restrictors or expansion valves
    • F25B2341/001—Ejectors not being used as compression device
    • F25B2341/0016—Ejectors for creating an oil recirculation

Definitions

  • the present device is designed to protect the compressor in a refrigerant system from the effects of liquid refrigerant returning to it.
  • a basic problem consists in the unavoidable return of liquid refrigerant to the compressor.
  • Liquid refrigerant can cause the discharge valves to break in the compressor, while diluting the oil in the compressor.
  • the resultant galling or seizing of bearings and other moving parts in the compressor directly affects compressor capability.
  • an accumulator or liquid trapping device of diminutive size is interposed between the compressor and the evaporator, giving greater trapping capacity for refrigerant liquid than in equivalent volume units. Since a smaller volume unit can be used for equal trapping capacity, there is a resultant economy in installation.
  • the accumulator consists basically of an accumulator chamber having inlet and outlet ports at its top and supporting an eductor tube coaxially with respect to the outlet.
  • the eductor tube extends from the outlet downwardly to the bottom of the chamber.
  • Vapor is introduced through the inlet and, being dead-ended at the bottom of the chamber, commences a swirling action prior to leaving the chamber through the outlet. Simultaneously, refrigerant liquid and oil from the compressor are accumulated in the chamber bottom. The swirling action of the vapor complements liquid accumulation in the bottom of the chamber.
  • FIG. 1 is a schematic view of a liquid refrigeration system
  • FIG. 2 is an enlarged vertical sectional view of the proposed liquid trapping device:
  • FIG. 3 is a horizontal section of the device, taken along section line 33 of FIG. 2;
  • FIG. 4 is a perspective view (actual size) of a proposed outlet fitting 28 prior to mounting of the eductor tube 32.
  • liquid trapping accumula tor 10 having inlet port 26 and outlet port 28 supported in its to 34, is positioned intermediate evaporator 16 and compressor 12 within a refrigeration system.
  • Inlet 26 is fed by conduit 20 extending from evaporator 16.
  • Conduit 24 extends from outlet 28 to compressor 12 and conduit 22 extends from compressor 12 to condenser 14.
  • the outlet fitting 33 is so designed as to serve as the outlet port 28 and bracket 30. It is a tubular device with a semi-circular opening in its side to permit the escape of refrigerant vapor.
  • Eductor tube 32 is supported coaxially and inset with respect to outlet 28 by means of bracket 30, so that the eductor tube bottom 35 is offset with respect to the chamber bottom 36.
  • Eductor tube top 31 is inset with respect to the side walls of out let 28 and outlet bottom 29.
  • Bracket 30 includes a vertically downwardly extending semi-circular portion 33 which partially encircles eductor tube 32, shielding the eductor top 31 and the outlet bottom 29 from inlet 26.
  • Port 28 can serve as a holder or mounting bracket for the oil pick up or eductor tube 32. This provides a very effective means of returning any trapped oil to the compressor 12.
  • the refrigerant vapor flows around the top 31 of the eductor tube 32, creating a Venturi action. This pulls trapped oil into the tube off of the bottom 36.
  • the oil contains a certain amount of dissolved refrigerant, The quantity of dissolved refrigerant is dependent upon the temperature-pressure relationship encountered and is an equilibrium condition.
  • a certain resistance to flow is encountered resulting in a slight pressure loss in tube 32. This pressure loss will cause some of the dissolved refrigerant to leave the solution.
  • the expanding refrigerant and the Venturi action will push the oil upward out of the tube 32 into the main stream of the refrigerant vapor to return to the compressor 12.
  • the dimensions of the accumulator chamber and the mode of supporting the eductor tube may be varied without departing from the spirit of invention.
  • a liquid trapping device of the type used for accumulating liquid intermediate a compressor and an evaporator within a refrigerant system comprising:
  • bracket fitted to the top of said chamber and extending downwardly from the outlet port into the chamber, said bracket being integral with said outlet extending downwardly from the outlet within the chamber as a half-cylinder baffle having its open side opposed to the chamber wall and its enclosed side interposed between the outlet and inlet;
  • a liquid trapping device of the type used for accumulating liquid intermediate a compressor and an evaporator within a refrigerant vapor return system comprising:

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  • Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Separating Particles In Gases By Inertia (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Compressor (AREA)
  • Air-Conditioning For Vehicles (AREA)
US742634A 1968-07-05 1968-07-05 Liquid trapping device Expired - Lifetime US3483714A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US74263468A 1968-07-05 1968-07-05

Publications (1)

Publication Number Publication Date
US3483714A true US3483714A (en) 1969-12-16

Family

ID=24985631

Family Applications (1)

Application Number Title Priority Date Filing Date
US742634A Expired - Lifetime US3483714A (en) 1968-07-05 1968-07-05 Liquid trapping device

Country Status (11)

Country Link
US (1) US3483714A (enrdf_load_html_response)
BE (1) BE732265A (enrdf_load_html_response)
CH (1) CH494382A (enrdf_load_html_response)
DE (1) DE1928984A1 (enrdf_load_html_response)
ES (1) ES366454A1 (enrdf_load_html_response)
FR (1) FR2012335A1 (enrdf_load_html_response)
GB (1) GB1261944A (enrdf_load_html_response)
IE (1) IE32879B1 (enrdf_load_html_response)
IL (1) IL32004A (enrdf_load_html_response)
NL (1) NL6909706A (enrdf_load_html_response)
NO (1) NO121957B (enrdf_load_html_response)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3754409A (en) * 1972-03-06 1973-08-28 Virginia Chemicals Inc Liquid trapping suction accumulator
JPS49117550U (enrdf_load_html_response) * 1973-02-02 1974-10-08
JPS50106216A (enrdf_load_html_response) * 1973-08-02 1975-08-21
DE2602582A1 (de) * 1976-01-21 1977-10-13 Schultze Erich Kg Fluessigkeitsabscheider mit absaugduese
FR2370245A1 (fr) * 1976-11-08 1978-06-02 Danfoss As Machine frigorifique sous carter perfectionnee
US4231230A (en) * 1979-04-11 1980-11-04 Carrier Corporation Refrigerant accumulator and method of manufacture thereof
US4593752A (en) * 1984-08-10 1986-06-10 Hussmann Corporation Combined refrigerated and heated food service table
US6557371B1 (en) * 2001-02-08 2003-05-06 York International Corporation Apparatus and method for discharging fluid
US20110016892A1 (en) * 2006-10-16 2011-01-27 Jyrki Sonninen Apparatus and method for separating droplets from vaporized refrigerant

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2518720A1 (fr) * 1981-12-18 1983-06-24 Refrigeration Cie Caladoise Circuit frigorifique a motocompresseurs, et pompe a chaleur munie d'un tel circuit
DE3434044A1 (de) * 1984-09-17 1986-03-27 TYLER Refrigeration GmbH, 6250 Limburg Saugsammelrohr fuer kaelteanlagen und waermepumpen
GB2239193A (en) * 1989-12-19 1991-06-26 William David Blenkinsop Liquid-gas separator
DE19533666A1 (de) * 1995-09-12 1997-03-13 Hansa Metallwerke Ag Akkumulator für eine nach dem "Orifice"-Prinzip arbeitende Klimaanlage, insbesondere Fahrzeugklimaanlage

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2121253A (en) * 1936-04-06 1938-06-21 Kold Hold Mfg Company Heat exchanger and accumulator
US3111819A (en) * 1961-11-03 1963-11-26 Bell & Gossett Co Evaporator with oil return means
US3180567A (en) * 1963-04-12 1965-04-27 Coleman Co Compressor anti-slugging device
US3212289A (en) * 1963-02-12 1965-10-19 Refrigeration Research Combination accumulator and receiver
US3370440A (en) * 1966-01-06 1968-02-27 Ac & R Components Inc Suction accumulator

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2121253A (en) * 1936-04-06 1938-06-21 Kold Hold Mfg Company Heat exchanger and accumulator
US3111819A (en) * 1961-11-03 1963-11-26 Bell & Gossett Co Evaporator with oil return means
US3212289A (en) * 1963-02-12 1965-10-19 Refrigeration Research Combination accumulator and receiver
US3180567A (en) * 1963-04-12 1965-04-27 Coleman Co Compressor anti-slugging device
US3370440A (en) * 1966-01-06 1968-02-27 Ac & R Components Inc Suction accumulator

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3754409A (en) * 1972-03-06 1973-08-28 Virginia Chemicals Inc Liquid trapping suction accumulator
JPS49117550U (enrdf_load_html_response) * 1973-02-02 1974-10-08
JPS50106216A (enrdf_load_html_response) * 1973-08-02 1975-08-21
DE2602582A1 (de) * 1976-01-21 1977-10-13 Schultze Erich Kg Fluessigkeitsabscheider mit absaugduese
FR2370245A1 (fr) * 1976-11-08 1978-06-02 Danfoss As Machine frigorifique sous carter perfectionnee
US4142380A (en) * 1976-11-08 1979-03-06 Danfoss A/S Encapsulated refrigerator
US4231230A (en) * 1979-04-11 1980-11-04 Carrier Corporation Refrigerant accumulator and method of manufacture thereof
US4593752A (en) * 1984-08-10 1986-06-10 Hussmann Corporation Combined refrigerated and heated food service table
US6557371B1 (en) * 2001-02-08 2003-05-06 York International Corporation Apparatus and method for discharging fluid
US20110016892A1 (en) * 2006-10-16 2011-01-27 Jyrki Sonninen Apparatus and method for separating droplets from vaporized refrigerant
US9038402B2 (en) * 2006-10-16 2015-05-26 Vahterus Oy Apparatus and method for separating droplets from vaporized refrigerant

Also Published As

Publication number Publication date
NO121957B (enrdf_load_html_response) 1971-05-03
IE32879B1 (en) 1974-01-09
GB1261944A (en) 1972-01-26
BE732265A (enrdf_load_html_response) 1969-10-01
IL32004A0 (en) 1969-06-25
FR2012335A1 (enrdf_load_html_response) 1970-03-20
IE32879L (en) 1970-01-05
DE1928984A1 (de) 1970-01-15
NL6909706A (enrdf_load_html_response) 1970-01-07
CH494382A (de) 1970-07-31
ES366454A1 (es) 1971-04-16
IL32004A (en) 1971-12-29

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Legal Events

Date Code Title Description
AS Assignment

Owner name: VIRGINIA CHEMICALS INC., A CORP. OF DE.

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:VIRGINIA CHEMICALS INC., A CORP. OF MAINE;REEL/FRAME:003938/0131

AS Assignment

Owner name: VIRGINIA KMP CORPORATION, 4100 PLATINUM WAY, DALLA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:VIRGINIA CHEMICALS INC.;REEL/FRAME:004327/0467

Effective date: 19841106