EP0107728B2 - Compresseur avec projecteur d'huile - Google Patents

Compresseur avec projecteur d'huile Download PDF

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Publication number
EP0107728B2
EP0107728B2 EP83901997A EP83901997A EP0107728B2 EP 0107728 B2 EP0107728 B2 EP 0107728B2 EP 83901997 A EP83901997 A EP 83901997A EP 83901997 A EP83901997 A EP 83901997A EP 0107728 B2 EP0107728 B2 EP 0107728B2
Authority
EP
European Patent Office
Prior art keywords
crankshaft
oil
compressor
upwardly
cylinder head
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
EP83901997A
Other languages
German (de)
English (en)
Other versions
EP0107728A4 (fr
EP0107728B1 (fr
EP0107728A1 (fr
Inventor
Billy B. Hannibal
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
Application filed by Tecumseh Products Co filed Critical Tecumseh Products Co
Priority to AT83901997T priority Critical patent/ATE29053T1/de
Publication of EP0107728A1 publication Critical patent/EP0107728A1/fr
Publication of EP0107728A4 publication Critical patent/EP0107728A4/fr
Publication of EP0107728B1 publication Critical patent/EP0107728B1/fr
Application granted granted Critical
Publication of EP0107728B2 publication Critical patent/EP0107728B2/fr
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
    • 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

  • This invention relates to a compressor oil cooling device, and more particularly to an oil slinger device wherein an elongated hollow body is adapted to receive a portion of the oil pumped upwardly and sling it radially outwardly against the cooler interior surfaces of the compressor in order to conduct heat energy from the oil to the compressor housing.
  • the crankshaft of a compressor conducts heat from the motorwhich drives it, the crankshaft bearings in which it rotates, and other associated parts connected or in close proximity thereto.
  • the crankshaft is machined with an oil passage axially extending therein and has an oil pump connected to its bottom portion, which extends into an oil sump in the bottom of the compressor to pump oil upwardly through the oil passage for distribution to the motor, bearings, and the like in order to cool and lubricate them and the crankshaft.
  • the oil is heated to high temperatures, and if not cooled may result in the premature deterioration or complete breakdown of the lubricating properties of the oil, thereby causing premature failure of bearings, wrist pins and the like.
  • the compres- sor would need to be constructed with the compressor parts below the crankshaft top end, which may not be possible due to the curvature of the compressor housing, or the crankshaft would have to be extended to elevate the top end above the compressor parts, which again may not be possible due to the compressor housing, or not desirable due to the increase in weight of the crankshaft.
  • US-A-2628016 which shows a small bent pipe or tube inserted in the oil passage in the crankshaft.
  • the pipe or tube is bent radially outwards to throw oil onto the wall of the compressor for cooling the oil.
  • a compressor including a hermetically sealed housing having a crankcase with a cylinder head and a reciprocating piston therein, a sump in a bottom portion and a vertically arranged crankshaft including an eccentric portion and having a pump connected to its bottom portion disposed in the sump for pumping lubricant from the pump upwardly through an oil passage in the crankshaft ; and an oil slinging device comprising a generally elongate hollow body connected at one end to the crankshaft in communication with the oil passage ; an upper portion of the generally elongate hollow body being disposed above the cylinder head and angularly disposed relative to the axis of rotation of the crankshaft so that the other end of the elongate hollow body is disposed upwardly and radially outwardly from the crankshaft whereby a portion of oil delivered upwardly through the oil passage to the generally elongate hollow body by the pump is slung radially outwardly from the crankshaft
  • the prior art provides a very simple but effective oil cooling arrangement for a compressor and one in which the upwardly slanting bore provides additional centrifugal velocity to the oil thus causing more effective slinging of the oil onto the inner surface of the compressor casing and thus enhancing cooling of the oil
  • the invention provides also cooling of the cylinder head.
  • the oil is a convenient medium for transferring heat from the compressor components to the housing of the compressor, as the oil can be used to contact all of the components inside the housing. Heat is transferred from the hot components to the oil, and then transferred from the oil to the compressor housing.
  • conventional compressor 8 comprises lower housing 10 and upper housing 12, which may be welded or brazed at seam 14.
  • crankcase 16 mounted within compressor 8
  • motor 20 comprising rotor 22 secured to crankshaft 18 and stator 24 with field winding 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 plate 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 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.
  • a unique means of cooling the oil is provided by oil slinger tube 68, which is fitted in opening 63 of upper oil passage 62 in the top end of crankshaft 18.
  • slinger68 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 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 Figure 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 surfaces 73 of upper housing 12.
  • slinger 68 can be 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 40 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 slingertubes 68, with bleed hole 80facing 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 traveling upwardly through slinger 68 to be slung generally horizontally, radially outwardly through bleed hole 80. As slinger 68 rotates past cylinder head 48, a spray of oil is slung from bleed hole 80 onto cylinder head 48 for cooling purposes. Little oil is slung from hole 81 since itfaces radially inwardly towards the rotational axis of crankshaft 18. Hole 18 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 caused 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 could 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.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)

Abstract

Un dispositif de projection d'huile est monté dans un compresseur utilisant une pompe centrifuge d'huile (50) pour pomper de l'huile depuis le carter inférieur (58) du compresseur vers le haut au travers d'un passage d'huile disposé axialement (60) dans le vilebrequin (18). Le dispositif est un tube rigide allongé (68) connecté à l'extrémité supérieure du vilebrequin et en communication avec le passage d'huile, et est disposé angulairement vers l'extérieur par rapport à l'axe de rotation du vilebrequin pour disposer son extrémité supérieure éloignée (70) vers le haut et radialement vers l'extérieur par rapport à la périphérie du vilebrequin rotatif. L'huile pompée au travers du dispositif par la pompe à huile est projetée radialement vers l'extérieur contre les surfaces intérieures (73) du corps (12) du compresseur de manière à permettre à l'huile de s'écouler vers le bas le long des surfaces internes du corps du compresseur, refroidissant ainsi l'huile par dissipation de l'énergie thermique de l'huile projetée sur le corps ou enveloppe (12) du compresseur.

Claims (1)

1. Compresseur (8) comprenant un carter (10, 12) hermétiquement fermé, contenant un carter de vilebrequin (16) avec une culasse (38) et un piston alternatif à l'intérieur, une cuvette (58) dans la partie basse et un vilebrequin (18) disposé verticalement, qui comprend une partie excentrique et qui est relié à sa partie inférieure à une pompe (56) disposée dans la cuvette (58) pour refouler le lubrifiant de la pompe vers le haut à travers un passage d'huile (60) ménagé dans le vilebrequin (18) ; et un dispositif de projection d'huile (68) comprenant un corps creux (68) de forme générale allongée relié par une première extrémité au vilebrequin (18), en communication avec le passage d'huile (60) ; une partie supérieure du corps creux (68) de forme générale allongée étant disposée au-dessus de la culasse (38) et inclinée par rapport à l'axe de rotation du vilebrequin (18), de sorte que l'autre extrémité du corps creux de forme allongée est disposée vers le haut et radialement vers l'extérieur par rapport au vilebrequin (18), de sorte qu'une partie de l'huile débitée vers le haut par la pompe (56) à travers le passage d'huile (60) vers le corps creux (68) de forme générale allongée est projetée radialement vers l'extérieur à partir du vilebrequin par une ouverture à l'extrémité du vilebrequin, pour refroidir l'huile contre les surfaces intérieures du carter du compresseur, le carter de vilebrequin (16) étant placé dans une partie supérieure du carter (10, 12), l'excentrique du vilebrequin étant relié à la partie supérieure du vilebrequin (18) et comprenant un perçage (62) ouvert à son extrémité inférieure sur le passage d'huile (60) et dirigé dans une position inclinée vers le haut et vers l'extérieur par rapport à l'axe du vilebrequin, de sorte que l'extrémité supérieure ou perçage (62) est excentrique par rapport l'axe de rotation du vilebrequin (18), une extrémité du corps creux (68) étant reçue dans l'extrémité supérieure du perçage (62), dans l'alignement axial de celui-ci, et inclinée vers le haut et vers l'extérieur par rapport a l'axe du vilebrequin, caractérisé en ce qu'il est prévu, dans un côté radialement externe du corps creux (68), une ouverture (80) pour projeter le lubrifiant radialement à l'extérieur de celui-ci et en direction de la culasse (38) pour refroidir la culasse.
EP83901997A 1982-05-03 1983-05-03 Compresseur avec projecteur d'huile Expired - Lifetime EP0107728B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83901997T ATE29053T1 (de) 1982-05-03 1983-05-03 Kompressoraggregat mit oelspruehanlage.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US37405082A 1982-05-03 1982-05-03
US374050 1982-05-03

Publications (4)

Publication Number Publication Date
EP0107728A1 EP0107728A1 (fr) 1984-05-09
EP0107728A4 EP0107728A4 (fr) 1984-09-06
EP0107728B1 EP0107728B1 (fr) 1987-08-19
EP0107728B2 true EP0107728B2 (fr) 1991-06-26

Family

ID=23475050

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83901997A Expired - Lifetime EP0107728B2 (fr) 1982-05-03 1983-05-03 Compresseur avec projecteur d'huile

Country Status (6)

Country Link
EP (1) EP0107728B2 (fr)
AU (1) AU542162B2 (fr)
DE (1) DE3373122D1 (fr)
IN (1) IN161029B (fr)
SU (1) SU1450757A3 (fr)
WO (1) WO1983003877A1 (fr)

Family Cites Families (9)

* 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
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
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
FR1156042A (fr) * 1956-08-20 1958-05-12 Moto-compresseur à palettes, à circulation d'huile
US3285504A (en) * 1964-12-10 1966-11-15 Gen Motors Corp Refrigerant apparatus

Also Published As

Publication number Publication date
EP0107728A4 (fr) 1984-09-06
IN161029B (fr) 1987-09-19
DE3373122D1 (en) 1987-09-24
EP0107728B1 (fr) 1987-08-19
AU542162B2 (en) 1985-02-07
EP0107728A1 (fr) 1984-05-09
SU1450757A3 (ru) 1989-01-07
WO1983003877A1 (fr) 1983-11-10
AU1605683A (en) 1983-11-21

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