US3312387A - Lubrication system for rotary compressor - Google Patents

Lubrication system for rotary compressor Download PDF

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Publication number
US3312387A
US3312387A US422348A US42234864A US3312387A US 3312387 A US3312387 A US 3312387A US 422348 A US422348 A US 422348A US 42234864 A US42234864 A US 42234864A US 3312387 A US3312387 A US 3312387A
Authority
US
United States
Prior art keywords
vanes
suction
refrigerant
vane
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
US422348A
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English (en)
Inventor
Cassidy Harry Joseph
Beck William Donald
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.)
Borg Warner Corp
Original Assignee
Borg Warner Corp
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 Borg Warner Corp filed Critical Borg Warner Corp
Priority to US422348A priority Critical patent/US3312387A/en
Priority to GB53946/65A priority patent/GB1087963A/en
Priority to SE16653/65A priority patent/SE319197B/xx
Priority to FR43779A priority patent/FR1524996A/fr
Priority to NL6516955A priority patent/NL6516955A/xx
Priority to DE1503507A priority patent/DE1503507C3/de
Priority to BE674547D priority patent/BE674547A/xx
Application granted granted Critical
Publication of US3312387A publication Critical patent/US3312387A/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
    • F04C29/0007—Injection of a fluid in the working chamber for sealing, cooling and lubricating
    • 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

  • the refrigerant and oil mixture When the refrigerant and oil mixture is injected into the compression chamber adjacent to the suction port, the refrigerant vaporizes out of the oil and expands under the relatively lower pressure conditions existing in this area. This results in the refrigerant vapor filling up the suction volume and retarding the flow of suction gas into the compression chamber. This action has the effect of reducing the capacity of the compressor and is detrimental to its operating efficiency.
  • Another object of the invention is to provide a lubrication system for a rotary compressor employing means for directly injecting a mixture of oil and refrigerant into the compression chamber in such a way that a substantial separation of the refrigerant from the lubricant is effected without materially retarding the flow of suction gas into said compression chamber.
  • Still another object of the invention is to provide a positive means for insuring satisfactory flow of lubricant to bearings and seals within the compressor.
  • FIGURE 1 is a cross-sectional view of a compressor constructed in accordance with the principles of the present invention
  • FIGURE 2' is a cross-sectional view taken along the plane of line 22 of FIGURE 1;
  • FIGURE 3 is a cross-sectional view taken along the plane of line 3- 3 of FIGURE 1.-
  • the compressor of the present invention comprises a housing, generally designated by reference character A, comprising a cylinder section 10, end plates 12 and 14, and a refrigerant gas chamber 16, all of said parts being connected by suitable means, such as elongated cap screws 17.
  • Housing A includes an internal cavity defined by a cylindrical peripheral wall 20 in cylinder section 10 and end walls 22, 24 formed by the inwardly facing surfaces of end plates 12 and 14. Supported for rotation within the cavity by bearings 18, 19 is a cylindrical rotor 25 which is mounted within the cavity in eccentric relation to the peripheral wall to provide a crescent shaped compression chamber 26 between said peripheral wall and side walls 22, 24.
  • Rotor 25 comprises a cylindrical hub 32 connected to a drive shaft 34 which is journalled for rotation by bearings 18 and 1-9 in end plates 12 and 14 respectively, and a plurality of vanes as received within a plurality of transversely extending slots 38 in said hub, said vanes being reciprocatively movable within slots in the hub member.
  • vanes are urged radially outwardly by a plurality of pins 40 which are operatively associated with each pair of diametrically opposed vanes.
  • the pins 40 which extend through holes (not shown) in the hub and drive shaft, resiliently bias the vanes apart by means of small springs 42 received in complementary bores 43 in the under side of each vane.
  • suction volume is meant to include any portion of the compression cavity which is, at any position of the vanes, in fluid communication with the suction port 28. It will be appreciated that as the vanes sweep through the compression cavity in the direction indicated by the arrow (FIG. 2), the volume, or extent of the cavity, open to the suction port 28 varies. The position of the vanes as shown in FIG- URE 2 is such that the vane adjacent to the lower edge.
  • the suction volume at this point includes the entire volume in back of the leading vane, that is, the vane ahead of the one adjacent the edge 28a of the suction port. Therefore, the point where suction is closed is the point in the cavity just ahead (in the direction of rotation) of a leading vane when an adjacent trailing vane passes the last point where the suction port intersects the compression cavity.
  • Means for injecting the oil-refrigerant are provided by. a fluid passage 46 communicating with the sump portion 47 of the refrigerant gas chamber 16, said passage registering with a fluid passage 48 through the cylinder section. At opposite ends of the cylinder section, small grooves 49a, 4912 are provided in the face thereof to permit the diluted lubricant to be injected into said compression chamber at the point, defined above, where the suction volume is closed. 7
  • the maximum pressure reached at any time varies, depending on the radial distance between the hub periphery and peripheral cavity wall 20. Immediately 9 adjacentto the discharge port, over compression occurs just before the discharge valve opens. On the other hand, at a point just beyond the point where the suction Volume is closed, the maximum pressure reached is substantially below discharge pressure. Since the refrigerant-oil mixture, is at discharge pressure, due to the factv that refrigerant vapor above the mixture in the sump is always at discharge pressure, the refrigerant in the oil vaporizes and is released from the oil when it is injected into the lower pressure area in the cavity.
  • the oiland lubricant mixture which is injected through the injection port flows through the clearance space between the ends of the rotor hub 32 and the end walls 22, 24 of the compression chamber 26, and also between the faces of the vane and the adjacent side portionsof the slots into which the vanes are received, ultimately filling up the space underneath each vane when the vanes are substantially fully extended, at or near point X.
  • the end plate 12 is provided with a recessed portion 55 (the position of whichis indicated by dotted lines in FIGURE 2) in fluid communication with the space between the front bearing 18 and the rotary seal 58 through fluid passage 56.
  • a recessed portion 55 the position of whichis indicated by dotted lines in FIGURE 2
  • the ends of said space pass into registered relation with recessed portion 55.
  • the vanes therefore, function as pumps into which oil is circulated and then compressed, finally being discharged through the passage 56 to the space between the bearing and the seal.
  • the gas chamber .portion, 16 of the housing A comprises a pair of chambers 60, 62 provided by a partition shown in FIGURE 3.
  • the chamber or compartment 60 shown in the upper left-hand corner of the figure is a suction chamber into which suction gas is passed from the evaporator. This suction gas compartment is in communication with the suction port shown in FIGURE 2.
  • The. other compartment 62 is the gas discharge department into which the gas under compression is passed through the discharge valve assembly 30 and an opening 66 in the rear end plate 14. Discharge gas passes downwardly through a pair of oil separating devices 68a, 68b and flows outwardly through the discharge passage 70 having an external connection 72 and a conduit leading to the condenser.
  • an oil level indicated at L is formed in the lower or sump portion 47 of the gas chamber which communicates through passages 46 and 48 and oil injection ports 49a and 49b. Since the oil is under discharge pressure, there is a positive force acting on the oil to force it to the compression chamber.
  • a compressor comprising a housing having a cavity therein, said cavity being defined by a generally cylindrical peripheral wall and opposed end walls; a rotor including a generally cylindrical hub having a plurality of substantially radially extending slots, and a shaft extending axially from said hub; means for rotatably journaling said rotor in said cavity, said means including at least one bearing supporting said shaft; said hub, said peripheral wall, and said opposed end walls defining a crescent-shaped compression chamber, said rotor and said end walls defining clearance spaces therebetween; means defining suction and discharge ports communicating with said compression chamber; a plurality of vanes carried by said hub, said vanes being received in said slots for reciprocative movement so that the tip portions thereof are maintained in engagement with said peripheral cavity wall, said vanes defining a plurality of movable pockets therebetween, the volume of each pocket expanding from said suction port to a point intermediate said suction and discharge ports and contracting from said intermediate point in a direction toward said discharge port; means defining a space under each of said vanes

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
US422348A 1964-12-30 1964-12-30 Lubrication system for rotary compressor Expired - Lifetime US3312387A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
US422348A US3312387A (en) 1964-12-30 1964-12-30 Lubrication system for rotary compressor
GB53946/65A GB1087963A (en) 1964-12-30 1965-12-20 Rotary sliding vane compressors and lubrication systems therefor
SE16653/65A SE319197B (en, 2012) 1964-12-30 1965-12-22
FR43779A FR1524996A (fr) 1964-12-30 1965-12-27 Dispositif de lubrification pour compresseur rotatif
NL6516955A NL6516955A (en, 2012) 1964-12-30 1965-12-27
DE1503507A DE1503507C3 (de) 1964-12-30 1965-12-29 Flügelzellenverdichter
BE674547D BE674547A (en, 2012) 1964-12-30 1965-12-30

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US422348A US3312387A (en) 1964-12-30 1964-12-30 Lubrication system for rotary compressor

Publications (1)

Publication Number Publication Date
US3312387A true US3312387A (en) 1967-04-04

Family

ID=23674499

Family Applications (1)

Application Number Title Priority Date Filing Date
US422348A Expired - Lifetime US3312387A (en) 1964-12-30 1964-12-30 Lubrication system for rotary compressor

Country Status (7)

Country Link
US (1) US3312387A (en, 2012)
BE (1) BE674547A (en, 2012)
DE (1) DE1503507C3 (en, 2012)
FR (1) FR1524996A (en, 2012)
GB (1) GB1087963A (en, 2012)
NL (1) NL6516955A (en, 2012)
SE (1) SE319197B (en, 2012)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3480204A (en) * 1968-03-26 1969-11-25 Borg Warner Lubrication system for rotary compressor
US3695786A (en) * 1970-01-27 1972-10-03 Copeland Refrigeration Corp Compressor and method of lubrication
US3809511A (en) * 1972-05-03 1974-05-07 Bosch Gmbh Robert Valve arrangement for a compressor
US3833318A (en) * 1972-07-27 1974-09-03 Toyoda Automatic Loom Works Rotary compressor
US3844691A (en) * 1970-08-27 1974-10-29 Daimler Benz Ag Lubricant supply system for rotary piston engine
US4231727A (en) * 1976-07-10 1980-11-04 Volkswagenwerk Aktiengesellschaft Vacuum producing rotary vane pump with shaft lubrication
US4279578A (en) * 1979-05-21 1981-07-21 Borg-Warner Corporation Compact oil separator for rotary compressor
EP0063656A1 (en) * 1979-05-17 1982-11-03 Ingersoll-Rand Company An air/oil separator and oil reservoir assembly
US4557678A (en) * 1983-06-21 1985-12-10 Mitsubishi Denki Kabushiki Kaisha Pump device
DE4223315A1 (de) * 1991-07-30 1993-02-04 Mannesmann Ag Einspritzgekuehlter vielzellenverdichter
US6183227B1 (en) * 1998-04-09 2001-02-06 Hitachi, Ltd. Screw compressor
US20050254983A1 (en) * 2004-05-14 2005-11-17 1564330 Ontario Inc. Rotary pistons
WO2010112800A1 (en) * 2009-03-30 2010-10-07 British Telecommunications Public Limited Company Air compressor
US20110171054A1 (en) * 2009-06-25 2011-07-14 Patterson Albert W Rotary device
CN114542469A (zh) * 2022-03-09 2022-05-27 广东美芝制冷设备有限公司 旋转式压缩机及制冷设备

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3523746A (en) * 1968-10-31 1970-08-11 Racine Hydraulics Inc Fluid translating device
GB2081383B (en) * 1980-07-31 1983-12-21 Hydrovane Compressor The Co Lt Rotary compressors

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1732039A (en) * 1925-03-05 1929-10-15 Rotorite Corp Refrigerating machine and method of refrigeration
US1928300A (en) * 1930-07-17 1933-09-26 Servel Inc Motor-pump unit
US1953253A (en) * 1931-03-04 1934-04-03 Ogilvie Henry Rotary compressor or pump
US1970033A (en) * 1931-06-24 1934-08-14 Rotorite Corp Fluid compressor
US2013777A (en) * 1931-06-24 1935-09-10 Rotorite Corp Rotary compressor
US2275774A (en) * 1939-01-11 1942-03-10 Jr Frederick Kraissl Compression or vacuum machine
US2455297A (en) * 1943-02-13 1948-11-30 Thompson Prod Inc Sliding vane air pump lubrication
US2832293A (en) * 1954-01-26 1958-04-29 American Brake Shoe Co Vane pump

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1732039A (en) * 1925-03-05 1929-10-15 Rotorite Corp Refrigerating machine and method of refrigeration
US1928300A (en) * 1930-07-17 1933-09-26 Servel Inc Motor-pump unit
US1953253A (en) * 1931-03-04 1934-04-03 Ogilvie Henry Rotary compressor or pump
US1970033A (en) * 1931-06-24 1934-08-14 Rotorite Corp Fluid compressor
US2013777A (en) * 1931-06-24 1935-09-10 Rotorite Corp Rotary compressor
US2275774A (en) * 1939-01-11 1942-03-10 Jr Frederick Kraissl Compression or vacuum machine
US2455297A (en) * 1943-02-13 1948-11-30 Thompson Prod Inc Sliding vane air pump lubrication
US2832293A (en) * 1954-01-26 1958-04-29 American Brake Shoe Co Vane pump

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3480204A (en) * 1968-03-26 1969-11-25 Borg Warner Lubrication system for rotary compressor
US3695786A (en) * 1970-01-27 1972-10-03 Copeland Refrigeration Corp Compressor and method of lubrication
US3844691A (en) * 1970-08-27 1974-10-29 Daimler Benz Ag Lubricant supply system for rotary piston engine
US3809511A (en) * 1972-05-03 1974-05-07 Bosch Gmbh Robert Valve arrangement for a compressor
US3833318A (en) * 1972-07-27 1974-09-03 Toyoda Automatic Loom Works Rotary compressor
US4231727A (en) * 1976-07-10 1980-11-04 Volkswagenwerk Aktiengesellschaft Vacuum producing rotary vane pump with shaft lubrication
EP0063656A1 (en) * 1979-05-17 1982-11-03 Ingersoll-Rand Company An air/oil separator and oil reservoir assembly
US4279578A (en) * 1979-05-21 1981-07-21 Borg-Warner Corporation Compact oil separator for rotary compressor
US4557678A (en) * 1983-06-21 1985-12-10 Mitsubishi Denki Kabushiki Kaisha Pump device
DE4223315A1 (de) * 1991-07-30 1993-02-04 Mannesmann Ag Einspritzgekuehlter vielzellenverdichter
US6183227B1 (en) * 1998-04-09 2001-02-06 Hitachi, Ltd. Screw compressor
US6273693B2 (en) 1998-04-09 2001-08-14 Hitachi, Ltd. Screw compressor
US20050254983A1 (en) * 2004-05-14 2005-11-17 1564330 Ontario Inc. Rotary pistons
US7118361B2 (en) * 2004-05-14 2006-10-10 1564330 Ontario Inc. Rotary pistons
WO2010112800A1 (en) * 2009-03-30 2010-10-07 British Telecommunications Public Limited Company Air compressor
US9611842B2 (en) 2009-03-30 2017-04-04 British Telecommunications Public Limited Company Air compressor
US20110171054A1 (en) * 2009-06-25 2011-07-14 Patterson Albert W Rotary device
US8602757B2 (en) 2009-06-25 2013-12-10 Albert W. Patterson Rotary device
CN114542469A (zh) * 2022-03-09 2022-05-27 广东美芝制冷设备有限公司 旋转式压缩机及制冷设备

Also Published As

Publication number Publication date
BE674547A (en, 2012) 1966-04-15
DE1503507A1 (de) 1970-02-26
GB1087963A (en) 1967-10-18
NL6516955A (en, 2012) 1966-07-01
SE319197B (en, 2012) 1970-01-12
DE1503507B2 (de) 1975-03-20
DE1503507C3 (de) 1975-11-20
FR1524996A (fr) 1968-05-17

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