US1951915A - Refrigerating machine - Google Patents

Refrigerating machine Download PDF

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Publication number
US1951915A
US1951915A US451933A US45193330A US1951915A US 1951915 A US1951915 A US 1951915A US 451933 A US451933 A US 451933A US 45193330 A US45193330 A US 45193330A US 1951915 A US1951915 A US 1951915A
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US
United States
Prior art keywords
compressor
evaporator
chamber
refrigerating machine
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
US451933A
Inventor
Kagi Emil
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Sulzer AG
Original Assignee
Sulzer AG
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Filing date
Publication date
Application filed by Sulzer AG filed Critical Sulzer AG
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Publication of US1951915A publication Critical patent/US1951915A/en
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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
    • F25B31/00—Compressor arrangements
    • F25B31/002—Lubrication
    • F25B31/004—Lubrication oil recirculating arrangements
    • 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 object of the invention is to provide an improved means for automaticalls returning to the compressor of a refrigerating machine oil used for lubrication and sealing the clearances of the moving parts.
  • the chamber which m is maintained at a lower pressurefthan' the evaporator and to which the discharge'pipe' of the oil accumulator is connected constitutes the suction chamber or an injector which is operated by the refrigerating medium supplied to the compres- 35 sor.
  • a construction according to the invention is 39 dia atically illustrated by way of example in the accompanying drawing.
  • the reirigerating medium is supplied to the compressor 1 by the pipe 8 from the evaporator 4 as in the main patent and the evaporator has an oil accumulator 26 from which Cl is discharged through the pipe 27.
  • the chamber which is maintained by the suction of the compressor at a lower pressure than the evaporator and into 30 which the oil discharge pipe opens instead of being arranged as hitherto in the compressor itself,
  • a refrigerating machine employing a refrigerating liquid and a lubricant heavier than said liquid, comprising a. main evaporator, a compressor, and means between said main evaporator and said compressor for returning the lubricant heav- Y ier than the refrigeratiing liquid, and the refrigerant, from said main evaporator directly to.
  • said means including an injector located in the direct path between the outlet from the evaporator and the inlet to the compressor and having a pressure chamber and a suction chamber, a lubricant collector for collecting lubricant sinking by gravity and separating from the refrigerant, a discharge pipe connecting the separated lubricant in the bottom of said collector to the suction chamber of said injector, and a pipe leading directly from the pressure chamber of said injector directly to the compressor without passing through any intermediate apparatus, whereby the pressure in the discharge pipe from the said collector to said suction chamber is maintained lower than the pres sure at the outlet end of the main evaporator and the oil is returned to the compressorwithout altering the evaporator temperature.

Description

March 20,1934. T E. KAGI v 1,951,915
REFRIGERATING MACHINE Filed May 13. 1950 @1911 Baal. MW #5191044 ,ATFD N EV.
Patented Mar. 29, 1934- a A? if nnrnicaaa'rnse moms Emil nagi, -Winterthur, Switzerland, assignor to the firm Sulaer lFrres Societe Anonyrne, Winterthnr, Switzerland Application May 13, 1939, Serial No. 451333 1 Claim.
This invention relates to refrigerating machines and is particularly concerned with machines as described in U. S. application Ser. No.= 388,132 filed August Ztth, 1929. The object of the invention is to provide an improved means for automaticalls returning to the compressor of a refrigerating machine oil used for lubrication and sealing the clearances of the moving parts.
According to this invention the chamber which m is maintained at a lower pressurefthan' the evaporator and to which the discharge'pipe' of the oil accumulator is connected, constitutes the suction chamber or an injector which is operated by the refrigerating medium supplied to the compres- 35 sor. As a result the oil is automatically returned to the compressor with less loss of power than hitherto and without adversely affecting the evaporation temperature.
A construction according to the invention is 39 dia atically illustrated by way of example in the accompanying drawing. t
The reirigerating medium is supplied to the compressor 1 by the pipe 8 from the evaporator 4 as in the main patent and the evaporator has an oil accumulator 26 from which Cl is discharged through the pipe 27.
According to this invention, the chamber which is maintained by the suction of the compressor at a lower pressure than the evaporator and into 30 which the oil discharge pipe opens, instead of being arranged as hitherto in the compressor itself,
is made the same as the suction chamber 36 of an injector-3'7. This injector is so connected to the A in Switzerland (icteber 1, 12 29 ated by the refrigerating medium. Oil collecting in the chamber 28 is thus drawn up into the chamber 36 without appreciable loss of pressure oi the refrigerating medium and, when the chamber 36 is approximately full, the oil is carried away by the rapidly moving refrigerating medium and returned to the compressor in an atomized state.
I claim:
A refrigerating machine employing a refrigerating liquid and a lubricant heavier than said liquid, comprising a. main evaporator, a compressor, and means between said main evaporator and said compressor for returning the lubricant heav- Y ier than the refrigeratiing liquid, and the refrigerant, from said main evaporator directly to.
said compressor therefrom, said means including an injector located in the direct path between the outlet from the evaporator and the inlet to the compressor and having a pressure chamber and a suction chamber, a lubricant collector for collecting lubricant sinking by gravity and separating from the refrigerant, a discharge pipe connecting the separated lubricant in the bottom of said collector to the suction chamber of said injector, and a pipe leading directly from the pressure chamber of said injector directly to the compressor without passing through any intermediate apparatus, whereby the pressure in the discharge pipe from the said collector to said suction chamber is maintained lower than the pres sure at the outlet end of the main evaporator and the oil is returned to the compressorwithout altering the evaporator temperature.
1 f 7 EMIL KAGI.
as i
US451933A 1929-10-07 1930-05-13 Refrigerating machine Expired - Lifetime US1951915A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH141800T 1929-10-07

Publications (1)

Publication Number Publication Date
US1951915A true US1951915A (en) 1934-03-20

Family

ID=35892243

Family Applications (1)

Application Number Title Priority Date Filing Date
US451933A Expired - Lifetime US1951915A (en) 1929-10-07 1930-05-13 Refrigerating machine

Country Status (5)

Country Link
US (1) US1951915A (en)
CH (1) CH141800A (en)
DE (1) DE508673C (en)
GB (1) GB341799A (en)
NL (1) NL28975C (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2610480A (en) * 1949-10-12 1952-09-16 Robert G Briscoe Mechanical refrigerating apparatus
US3370440A (en) * 1966-01-06 1968-02-27 Ac & R Components Inc Suction accumulator
US5875637A (en) * 1997-07-25 1999-03-02 York International Corporation Method and apparatus for applying dual centrifugal compressors to a refrigeration chiller unit
US5890374A (en) * 1996-06-10 1999-04-06 Samsung Electronics Co., Ltd. Oil separator for evaporator
US5894740A (en) * 1997-03-01 1999-04-20 Bitzer Kuehlmaschinenbau Gmbh Refrigerating plant
US6065297A (en) * 1998-10-09 2000-05-23 American Standard Inc. Liquid chiller with enhanced motor cooling and lubrication
US6233967B1 (en) 1999-12-03 2001-05-22 American Standard International Inc. Refrigeration chiller oil recovery employing high pressure oil as eductor motive fluid

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1044839B (en) * 1956-01-23 1958-11-27 Licentia Gmbh Arrangement for the lubrication of an encapsulated swing compressor, especially for refrigeration machines
US5086621A (en) * 1990-12-27 1992-02-11 York International Corporation Oil recovery system for low capacity operation of refrigeration systems

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2610480A (en) * 1949-10-12 1952-09-16 Robert G Briscoe Mechanical refrigerating apparatus
US3370440A (en) * 1966-01-06 1968-02-27 Ac & R Components Inc Suction accumulator
US5890374A (en) * 1996-06-10 1999-04-06 Samsung Electronics Co., Ltd. Oil separator for evaporator
US5894740A (en) * 1997-03-01 1999-04-20 Bitzer Kuehlmaschinenbau Gmbh Refrigerating plant
US5875637A (en) * 1997-07-25 1999-03-02 York International Corporation Method and apparatus for applying dual centrifugal compressors to a refrigeration chiller unit
US6065297A (en) * 1998-10-09 2000-05-23 American Standard Inc. Liquid chiller with enhanced motor cooling and lubrication
US6233967B1 (en) 1999-12-03 2001-05-22 American Standard International Inc. Refrigeration chiller oil recovery employing high pressure oil as eductor motive fluid
WO2001040659A1 (en) * 1999-12-03 2001-06-07 American Standard Inc. Refrigeration chiller oil recovery employing high pressure oil as eductor motive fluid

Also Published As

Publication number Publication date
GB341799A (en) 1931-01-22
CH141800A (en) 1930-08-15
NL28975C (en) 1933-02-15
DE508673C (en) 1930-09-29

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