EP0108795B2 - Oil distribution system for a compressor - Google Patents

Oil distribution system for a compressor Download PDF

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Publication number
EP0108795B2
EP0108795B2 EP19830901998 EP83901998A EP0108795B2 EP 0108795 B2 EP0108795 B2 EP 0108795B2 EP 19830901998 EP19830901998 EP 19830901998 EP 83901998 A EP83901998 A EP 83901998A EP 0108795 B2 EP0108795 B2 EP 0108795B2
Authority
EP
European Patent Office
Prior art keywords
crankshaft
cylinder head
lubricant
oil
disposed
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
Application number
EP19830901998
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0108795B1 (en
EP0108795A1 (en
EP0108795A4 (en
Inventor
Billy B. Hannibal
Thomas A. Jacoby
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.)
Tecumseh Products Co
Original Assignee
Tecumseh Products Co
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=23475226&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0108795(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Tecumseh Products Co filed Critical Tecumseh Products Co
Priority to AT83901998T priority Critical patent/ATE28921T1/de
Publication of EP0108795A1 publication Critical patent/EP0108795A1/en
Publication of EP0108795A4 publication Critical patent/EP0108795A4/en
Publication of EP0108795B1 publication Critical patent/EP0108795B1/en
Application granted granted Critical
Publication of EP0108795B2 publication Critical patent/EP0108795B2/en
Expired 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
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/02—Lubrication
    • F04B39/0223—Lubrication characterised by the compressor type
    • F04B39/023—Hermetic compressors
    • F04B39/0269—Hermetic compressors with device for spraying lubricant or with mist lubrication

Definitions

  • the invention relates to hermetically sealed refrigeration compressors, and more particularly to an oil distribution system for such compressors adapted to conduct heat energy from the cylinder heads within the compressor housings.
  • the cooling of the cylinder head is left to the suction inlet refrigerant that is delivered directly into the compressor housing.
  • refrigerant that is delivered directly into the compressor housing.
  • US-A-2198258 similarly discloses cooling the cylinder head of a compressor by passing oil over it, the oil being dripped from stationary parts onto the cylinder head to provide the cooling.
  • oil is sprayed against the wall of the housing and the outside of the stator body so that the oil runs down the side walls and is cooled by contact therewith.
  • the location of the cylinder head is such that oil sprayed outwardly cannot reach the cylinder head itself.
  • a compressor including a hermeticafly sealed housing having a crankcase therein with a cylinder disposed in the crankcase and a sump in a bottom portion thereof; a substantially vertically disposed crankshaft rotatably received in the crankcase and having a piston operably connected thereto and disposed in the cylinder; a cylinder head, the crankshaft having pump means connected to its bottom portion and disposed in the sump for pumping lubricant from the sump upwardly through a lubricant passage in the crankshaft, and a lubricant distribution system having a generally elongate hollow body connected to the crankshaft and in communication with the lubricant passage and an end opening through which lubricant is thrown radially outwardly against the housing upon rotation of the crankshaft; an upper portion being of the hollow body angularly disposed relative to the axis of rotation of the crankshaft to dispose the opposite end upwardly and radially outward
  • One technique for maintaining the discharge valve temperature low enough to prevent an accumulation of carbon deposits is to transfer heat energy from the cylinder head expeditiously. This invention accomplishes such heat transfer by bathing the cylinder head with a flow of oil.
  • a compressor including a hermetically sealed housing having a crankcase therein with a cylinder disposed in the crankcase and a sump in a bottom portion thereof; a substantially vertically disposed crankshaft rotatably received in the crankcase and having a piston operably connected thereto and disposed in the cylinder; a cylinder head, the crankshaft having pump means connected to its bottom portion and disposed in the sump for pumping lubricant from the sump upwardly through a lubricant passage in the crankshaft, and a lubricant distribution system having a generally elongate hollow body connected to the crankshaft and in communication with the lubricant passage and an end opening through which lubricant is thrown radially outwardly against the housing upon rotation of the crankshaft; an upper portion being of the hollow body angularly disposed relative to the axis of rotation of the crankshaft to dispose the opposite end upwardly and radially outwardly from the crankshaft; characterized by:
  • the present invention provides significant additional cooling to the cylinder, and particularly to the cylinder head, of a refrigeration compressor, thereby increasing the compressor's efficiency, preventing the premature accumulation of carbon deposits on valve arrangements, and increasing the useful life of bearings, insulation and the like.
  • conventional compressor 8 comprises a lower housing 10 and upper housing 12, which may be welded or brazed at seam 14.
  • crankcase 16 mounted within compressor 8 is crankcase 16 having crankshaft 18 rotatably received therethrough, and a motor 20 comprising rotor 22 secured to crankshaft 18 and stator 24 with field windings 26.
  • crankshaft 18 has closed- loop end 28 of connecting rod 30 connected thereto and which has its opposite end connected by wrist pin 32 and spring clip 34 to piston 36 disposed in cylinder 38 of crankcase 16.
  • Cylinder 38 has connected thereto gasket 40, leaf 42, valve plate 44, gasket 46, and cylinder head 48 by four bolts 50.
  • the piston-cylinder arrangement is dynamically balanced by counterweight 52 connected to crankshaft 18.
  • crankshaft 18 Disposed in lower housing 10, along with refrigerant tubing 54, is oil pump 56 which is connected to the bottom end portion of crankshaft 18 in oil sump 58.
  • Crankshaft 18 has axially disposed therein oil passage 60 and upper oil passage 62 for delivering oil to lubricate typical points, such as main bearing 64 and thrust bearing 66.
  • compressor 8 During operation, very high temperatures exist within compressor 8 causing the components therein, for example, motor 20, crankcase main bearing 64, crankshaft bearing 66, and most particularly cylinder head 48 to become extremely hot, thereby requiring cooling.
  • oil pump 56 pumping oil from oil sump 58 upwardly through oil passage 60 to not only lubricate points, such as crankcase main bearing 64 and crankshaft bearing 66, but also to conduct heat energy from motor 20, crankcase main bearing 64, crankshaft bearing 66, and other parts connected or in close proximity to crankshaft 18.
  • oil pump 56 pumping oil from oil sump 58 upwardly through oil passage 60 to not only lubricate points, such as crankcase main bearing 64 and crankshaft bearing 66, but also to conduct heat energy from motor 20, crankcase main bearing 64, crankshaft bearing 66, and other parts connected or in close proximity to crankshaft 18.
  • oil slinger tube 68 which is fitted in opening 63 of upper oil passage 62 in the top end of crankshaft 18.
  • slinger 68 is angularly disposed relative to the rotational axis of crankshaft 18.
  • Slinger 68 is of a predetermined length for reasons which will be discussed below and has opening 70 disposed therein, which, as measured from the rotational axis of crankshaft 18, has an effective radius longer than the effective radius of crankshaft 18.
  • slinger 68 is made of a rigid material that allows it to be angularly oriented from the vertical to direct the spray of oil away from top surface 75 and toward side surfaces 73 of upper housing 12. Furthermore, should certain compressor parts be disposed above the top end of crankshaft 18, as illustrated in Fig. 1, slinger 68 may be manufactured having a predetermined length which will insure opening 70 being above such parts, thereby preventing the existence of any obstruction in the path of the oil being slung by slinger 68.
  • slinger 68 due to its angular orientation relative to the rotational axis of crankshaft 18 and the increased effective radius of opening 70, is able to sling the oil against the surfaces 73 of upper housing 12.
  • slinger 68 is bent to allow directional control of the spray path of the oil exiting opening 70 for various compressor models.
  • cylinder head 48 experiences extremely high temperatures during the operation of compressor 8. This is primarily due to the temperature existing within the interior space of compressor 8 and the high temperatures produced within cylinder 38 upon compression of gaseous refrigerant.
  • Conventional means to alleviate the extremely high temperatures experienced by cylinder head 48 include disposing a plurality of fins 78 on cylinder head 48 to conduct the heat energy therefrom to the interior space of compressor 8. In spite of this, cylinder head 48 may still remain at undesirable temperatures during the operation of compressor 8.
  • bleed holes 80 and 81 are disposed in the side of oil slinger tube 68, with bleed hole 80 facing radially outwardly therefrom. Because slinger 68 rotates with crankshaft 18, bleed hole 80 will always rotate facing towards upper housing 12. This permits a portion of the oil travelling upwardly through slinger 68 to be slung generally horizontally, radially outwardly through bleed hole 80. As slinger 68 rotates past cylinder head 48, a pray of oil is slung from bleed hole 80 onto cylinder head for cooling purposes. Little oil is slung from hole 81 since it faces radially inwardly towards the rotational axis of crankshaft 18. Hole 81 is present only because of manufacturing expediency.
  • a deflector and heat sink 82 having slots 84 disposed therein is transversely disposed on the top surface of cylinder head 48. Consequently, upon slinger 68 rotating past cylinder head 48 a portion of oil is caught by deflector 82 and caued to flow over the surfaces of cylinder head 48 adjacent valve plate 44, while at the same time allowing a remaining portion of the oil to pass through slots 84 and to flow over end portion 49 of cylinder head 48 and ribs 78.
  • deflector 82 is transversely disposed on the top surface portion of cylinder head 48 adjacent gasket 46.
  • Deflector 82 chould be disposed on the top surface of cylinder head 48 adjacent end portion 49, however, due to the small confines generally existing between cylinder head 48 and upper housing 12, it has been found that deflector 82 performs its desired function most efficiently when disposed adjacent gasket 46.
  • deflector 82 is of a predetermined height and desirably disposed away from housing 10 to allow for production tolerances.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
EP19830901998 1982-05-03 1983-05-03 Oil distribution system for a compressor Expired EP0108795B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83901998T ATE28921T1 (de) 1982-05-03 1983-05-03 Oelverteilsystem fuer einen verdichter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US37408782A 1982-05-03 1982-05-03
US374087 1982-05-03

Publications (4)

Publication Number Publication Date
EP0108795A1 EP0108795A1 (en) 1984-05-23
EP0108795A4 EP0108795A4 (en) 1984-09-06
EP0108795B1 EP0108795B1 (en) 1987-08-12
EP0108795B2 true EP0108795B2 (en) 1990-09-12

Family

ID=23475226

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19830901998 Expired EP0108795B2 (en) 1982-05-03 1983-05-03 Oil distribution system for a compressor

Country Status (7)

Country Link
EP (1) EP0108795B2 (ru)
AU (1) AU548855B2 (ru)
DE (1) DE3373009D1 (ru)
DK (1) DK156966C (ru)
IN (1) IN161030B (ru)
SU (1) SU1521286A3 (ru)
WO (1) WO1983003878A1 (ru)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112049775A (zh) * 2020-09-16 2020-12-08 江西红海力能源科技有限公司 一种消音效果好的压缩机

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2050385A (en) * 1935-05-25 1936-08-11 Westinghouse Electric & Mfg Co Blower
US2125645A (en) * 1936-06-11 1938-08-02 Crosley Radio Corp Lubricating enclosed engines
US2198258A (en) * 1937-01-21 1940-04-23 Crosley Corp Refrigeration system
FR871115A (fr) * 1941-03-28 1942-04-09 Groupe moteur-compresseur <<hermétique>> perfectionné, pour appareils frigorifiques
US2504528A (en) * 1944-09-06 1950-04-18 Philco Corp Refrigeration apparatus
GB576016A (en) * 1944-09-26 1946-03-14 Standard Pressed Steel Co An improved method of lubricating refrigerator compressors and the like
US2628016A (en) * 1946-03-05 1953-02-10 Tecumseh Products Co Refrigerating apparatus
US2500751A (en) * 1947-05-19 1950-03-14 Westinghouse Electric Corp Refrigeration apparatus
DE938313C (de) * 1952-12-13 1956-01-26 Teves Kg Alfred Motorverdichter
US3285504A (en) * 1964-12-10 1966-11-15 Gen Motors Corp Refrigerant apparatus
DE1551285A1 (de) * 1967-05-17 1970-04-16 Giovanni Borghi Gekapseltes Motor-Kompressor-Aggregat mit geripptem Zylinder fuer Kuehlkreislaeufe
US3451615A (en) * 1967-07-12 1969-06-24 Tecumseh Products Co Compressor lubricating system

Also Published As

Publication number Publication date
EP0108795B1 (en) 1987-08-12
DK581683A (da) 1983-12-16
DE3373009D1 (en) 1987-09-17
IN161030B (ru) 1987-09-19
WO1983003878A1 (en) 1983-11-10
DK581683D0 (da) 1983-12-16
AU1605783A (en) 1983-11-21
AU548855B2 (en) 1986-01-02
EP0108795A1 (en) 1984-05-23
DK156966B (da) 1989-10-23
EP0108795A4 (en) 1984-09-06
DK156966C (da) 1990-03-19
SU1521286A3 (ru) 1989-11-07

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