US3825372A - Compact compressor unit - Google Patents

Compact compressor unit Download PDF

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Publication number
US3825372A
US3825372A US00316291A US31629172A US3825372A US 3825372 A US3825372 A US 3825372A US 00316291 A US00316291 A US 00316291A US 31629172 A US31629172 A US 31629172A US 3825372 A US3825372 A US 3825372A
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United States
Prior art keywords
compressor
oil
container
refrigerant
compressor unit
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
US00316291A
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English (en)
Inventor
A Lundberg
R Axelsson
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.)
Stal Refrigeration AB
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Stal Refrigeration AB
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
Application filed by Stal Refrigeration AB filed Critical Stal Refrigeration AB
Application granted granted Critical
Publication of US3825372A publication Critical patent/US3825372A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/02—Lubrication; Lubricant separation
    • F04C29/026—Lubricant separation
    • 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
    • F25B43/02—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat for separating lubricants from the refrigerant
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S418/00—Rotary expansible chamber devices
    • Y10S418/01—Non-working fluid separation

Definitions

  • Oil separating systems for refrigeration compressors where refrigerant and lubrication oil may be thoroughly mixed, are subject to heavy demands to prevent the oil from being transported by the refrigerant into the refrigeration plant. These demands create considerable space requirements, both to accomodate various separation devices such as baffles, filter separators and the like, and also to provide large cross sections, and hence low speeds, for the flow of refrigerant oil, thus allowing time for the oil to separate out.
  • the present invention utilizes a small part of the large volume of the oil separating system, placing the compressor inside the oil separator housing.
  • this invention provides a compact unit far easier to handle than those of the prior art.
  • FIG. 1 shows a motor 1 for driving compressor 2, which may be, for example, a screw compressor, through shaft-coupling 14.
  • Compressor 2 is positioned inside oil separator housing 3.
  • the outlet port 19 at the bottom of compressor 2 opens into a primary separator 4 for rough separation of the oil.
  • this separator 4 comprises a horizontal base plate for slowing down the exhaust from compressor 2 and a basket of coarse metal cloth or the like attached between the plate and the compressor outlet.
  • Primary separator 4 functions as follows: as the mixture of compressed refrigerant and oil emerges from compressor 2 oil particles are intercepted and detained by the base plate and the wires of the metal cloth, while the gaseous refrigerant passes in a diffuse flow.
  • Upper portion 10 of oil separator housing 3 functions as the top portion of a compressor 2 as well, and is provided with inlet port 8 and outlet port 9 for passage of the refrigerant from and to the compressor 2.
  • Motor I is attached through flanges to top portion 10 by means of cylindrical support member 16.
  • housing 3 In order to provide a sufficiently low flow rate in separator housing 3 for the mixture of gaseous refrigerant and oil so that oil drops have time to sink to the bottom of housing 3 and to be collected there in sump 6, housing 3 must have a rather large diameter and large volume. This provides adequate room for compressor 2, the volume of which is only a fraction of that of separator housing 3.
  • secondary oil separators in the form of filter domes S are mounted on diaphragm 17 in the upper part of housing 3 between compressor 2 and the outer wall of housing 3.
  • compressor 2 and housing 3 in vertical position is most convenient for the mounting of secondary oil separators 5 as shown.
  • the invention is not, however, restricted to the vertical arrangement of compressor 2 and housing 3, since both could be positioned with horizontal axes, (not shown).
  • compressor 2 could also be placed in the upper part of housing 3, oil sump 6 in its lower part, and secondary separators 5 mounted on horizontal diaphragm 17 in housing 3.
  • the essential feature is to provide flow paths for the gasoil mixture so that sufficiently slow flow rates, and, therefore, adequate oil deposition, is ensured.
  • the oil is collected in sump 6 at the bottom of housing 3, from where it can be forced upward by the gas pressure in housing 3 through tube 12 and filter 7 to intake 18 at the upper end of compressor 2.
  • Other intakes for oil may be provided at intermediate stage of compressor 2.
  • a refrigerating coil may be introduced into oil sump 6, from where the heat refrigerant, free of oil, may be fed back to the compressor, preferably at a point where the pressure level approximately equals the pressure of the vaporized refrigerant being returned.
  • Compressor unit for a refrigeration plant comprising:
  • oil separating means in the form of a container for separating from each other refrigerant from the plant and oil for lubrication of said compressor;
  • said compressor being arranged within said container
  • a secondary oil separator dividing said container into an upper part and a lower part
  • Compressor unit as defined in claim 1, wherein said compressor comprises a lubrication system connected to said oil sump, said oil for lubrication of said compressor being forced from said oil sump into said lubrication system by pressure, said pressure being generated within said container by said refrigerant from the plant.
  • Compressor unit according to claim 1, wherein said compressor and said oil separator housing share a common end portion, said end portion being provided with an inlet and said outlet discharge port for the compressor unit.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Compressor (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
US00316291A 1971-12-23 1972-12-18 Compact compressor unit Expired - Lifetime US3825372A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE16587/71A SE359159B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1971-12-23 1971-12-23

Publications (1)

Publication Number Publication Date
US3825372A true US3825372A (en) 1974-07-23

Family

ID=20302479

Family Applications (1)

Application Number Title Priority Date Filing Date
US00316291A Expired - Lifetime US3825372A (en) 1971-12-23 1972-12-18 Compact compressor unit

Country Status (5)

Country Link
US (1) US3825372A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS5226604B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE2261149C3 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1386890A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
SE (1) SE359159B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3989490A (en) * 1973-10-05 1976-11-02 Robert Bosch G.M.B.H. Oil separator, especially for a cooling medium compressor
US4341506A (en) * 1979-08-14 1982-07-27 Gutehoffnungshutte Sterkrade A.G. Apparatus for the generation of compressed air
US4478054A (en) * 1983-07-12 1984-10-23 Dunham-Bush, Inc. Helical screw rotary compressor for air conditioning system having improved oil management
WO1993008404A1 (en) * 1991-10-14 1993-04-29 Cash Engineering Research Pty. Ltd. Inlet control combination for a compressor system
US5803715A (en) * 1991-10-14 1998-09-08 Cash Engineering Research Pty. Ltd. Inlet control combination for a compressor system
US6478551B1 (en) * 1999-02-01 2002-11-12 Seiko Instruments Inc. Gas compressor having enlarged discharge chamber
US6499971B2 (en) 2000-12-01 2002-12-31 Bristol Compressors, Inc. Compressor utilizing shell with low pressure side motor and high pressure side oil sump
US20120011872A1 (en) * 2009-02-27 2012-01-19 Danfoss Commercial Compressors Device for separating lubricant from a lubricant-refrigerating gas mixture discharged from at least one refrigerant compressor
CN106196774A (zh) * 2016-07-27 2016-12-07 特灵空调系统(中国)有限公司 油分离器
US9933169B2 (en) * 2015-12-02 2018-04-03 National Taiwan Normal University Compressor
US20180106254A1 (en) * 2015-03-31 2018-04-19 Hitachi Industrial Equipment Systems Co., Ltd. Liquid Feeding Type Screw Compressor

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5430125B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1973-12-04 1979-09-28
JPS53130512U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1977-03-23 1978-10-17
JPS5830154Y2 (ja) * 1977-11-11 1983-07-02 株式会社神戸製鋼所 油冷式スクリユウ圧縮機
DE3014148C2 (de) * 1980-04-12 1985-11-28 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8000 München Ölabscheider für Verdichter von Wärmepumpen und Kältemaschinen
JPS59144188U (ja) * 1983-03-18 1984-09-26 トキコ株式会社 スクロ−ル式圧縮機
JPS59165591U (ja) * 1983-04-20 1984-11-06 トキコ株式会社 スクロ−ル式圧縮機
EP0238163B1 (en) * 1986-01-21 1991-02-27 Cash Engineering Co. Pty. Limited Compressor system
US5271245A (en) * 1992-08-20 1993-12-21 Ac&R Components, Inc. Two-stage helical oil separator
CN106014993B (zh) * 2016-06-30 2018-01-23 杭州久益机械股份有限公司 一种一体式空压机
CN108730193B (zh) * 2018-05-22 2023-09-22 珠海格力电器股份有限公司 压缩机

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT147658B (de) * 1933-07-17 1936-11-10 Bauer Eugen Gmbh Kinoapparat.
US2361146A (en) * 1939-09-21 1944-10-24 Montelius Carl Oscar Josef Pump
US3385513A (en) * 1966-04-11 1968-05-28 Trw Inc Refrigerant vapor compressor
US3578168A (en) * 1969-06-25 1971-05-11 Vilter Manufacturing Corp Refrigerating apparatus having oil-separating means

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3989490A (en) * 1973-10-05 1976-11-02 Robert Bosch G.M.B.H. Oil separator, especially for a cooling medium compressor
US4341506A (en) * 1979-08-14 1982-07-27 Gutehoffnungshutte Sterkrade A.G. Apparatus for the generation of compressed air
US4478054A (en) * 1983-07-12 1984-10-23 Dunham-Bush, Inc. Helical screw rotary compressor for air conditioning system having improved oil management
WO1993008404A1 (en) * 1991-10-14 1993-04-29 Cash Engineering Research Pty. Ltd. Inlet control combination for a compressor system
AU668110B2 (en) * 1991-10-14 1996-04-26 Cash Engineering Research Pty Ltd Inlet control combination for a compressor system
US5803715A (en) * 1991-10-14 1998-09-08 Cash Engineering Research Pty. Ltd. Inlet control combination for a compressor system
US6478551B1 (en) * 1999-02-01 2002-11-12 Seiko Instruments Inc. Gas compressor having enlarged discharge chamber
US6499971B2 (en) 2000-12-01 2002-12-31 Bristol Compressors, Inc. Compressor utilizing shell with low pressure side motor and high pressure side oil sump
US20120011872A1 (en) * 2009-02-27 2012-01-19 Danfoss Commercial Compressors Device for separating lubricant from a lubricant-refrigerating gas mixture discharged from at least one refrigerant compressor
US9207005B2 (en) * 2009-02-27 2015-12-08 Danfoss Commercial Compressors Device for separating lubricant from a lubricant-refrigerating gas mixture discharged from at least one refrigerant compressor
US20180106254A1 (en) * 2015-03-31 2018-04-19 Hitachi Industrial Equipment Systems Co., Ltd. Liquid Feeding Type Screw Compressor
US10514037B2 (en) * 2015-03-31 2019-12-24 Hitachi Industrial Equipment Systems Co., Ltd. Liquid feeding type screw compressor
US9933169B2 (en) * 2015-12-02 2018-04-03 National Taiwan Normal University Compressor
CN106196774A (zh) * 2016-07-27 2016-12-07 特灵空调系统(中国)有限公司 油分离器
CN106196774B (zh) * 2016-07-27 2018-09-07 特灵空调系统(中国)有限公司 油分离器

Also Published As

Publication number Publication date
DE2261149C3 (de) 1981-10-22
DE2261149B2 (de) 1981-02-26
GB1386890A (en) 1975-03-12
JPS4872705A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1973-10-01
DE2261149A1 (de) 1973-07-05
JPS5226604B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1977-07-15
SE359159B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1973-08-20

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