US3858685A - Lubricating device in compressors for refrigerators - Google Patents

Lubricating device in compressors for refrigerators Download PDF

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Publication number
US3858685A
US3858685A US407467A US40746773A US3858685A US 3858685 A US3858685 A US 3858685A US 407467 A US407467 A US 407467A US 40746773 A US40746773 A US 40746773A US 3858685 A US3858685 A US 3858685A
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United States
Prior art keywords
tube
compressor
lubricant
lubricating
lubricating device
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
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US407467A
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English (en)
Inventor
Luigi Bono
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Necchi Compressori Srl
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Necchi SpA
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Assigned to NECCHI COMPRESSORI, S.R.L. reassignment NECCHI COMPRESSORI, S.R.L. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: NECCHI SOCIETA PER AZIONI
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Expired - Lifetime legal-status Critical Current

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    • 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
    • F04B39/0238—Hermetic compressors with oil distribution channels
    • F04B39/0246—Hermetic compressors with oil distribution channels in the rotating shaft
    • F04B39/0253—Hermetic compressors with oil distribution channels in the rotating shaft using centrifugal force for transporting the oil
    • 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
    • F04B39/0238—Hermetic compressors with oil distribution channels
    • F04B39/0246—Hermetic compressors with oil distribution channels in the rotating shaft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
    • F16N7/36—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with feed by pumping action of the member to be lubricated or of a shaft of the machine; Centrifugal lubrication
    • F16N7/366—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with feed by pumping action of the member to be lubricated or of a shaft of the machine; Centrifugal lubrication with feed by pumping action of a vertical shaft of the machine

Definitions

  • Appl' 407467 A lubricating device in a com pressor with a vertical axis for a refrigerator which includes a tube having an upper part with a circular section and a lower part [30] Foreign Application Priority Data Oct. 19, i972 42916/72 whose lower end section has a spiral shape which is linked with a circular section of the upper part of the particles of refrigerating gas from the oil 26 2 70W.
  • the present invention relates to a lubricating device in compressors for refrigerators and particularly to certain improvements in a lubricating device of well known types of compressors with a vertical axis carrying, on the crankshaft end, a tube reaching the oil sump located in the lower shell section and thus conveying, by a centrifugal effect, the oil to the couplings of the compressor needing lubrication.
  • Lubricating systems are known embodying small tubes, or purposely drilled cones, plunged into the oil sump and assembled on the crankshaft in such a way as to present the lower end of the oil feeding line centered on the rotation axis of the motor shaft to prevent any clattering in the lubricant, and the upper section of said feeding line more and more out of center with respect to said rotation axis so as to set the lubricant particles in a centrifugal motion and send them upward along the slanting walls of the tubes.
  • the purpose of the present invention is to improve known lubricating systems of the above-mentioned type especially as regards the head of the pumping device and the separation of the particles of the refrigerating gas mixed with the sucked lubricant.
  • the technical problem solved was finding of a suitable form for the suction tube in order to secure a high head to the pump and, at the same time, to favor the separation of the refrigerating gas from the lubricating oil as well as to prevent the particles from reaching the couplings to be lubricated, which particles would in fact hinder the flow of oil to the couplings located above.
  • the tube having an upper part with a circular section and a lower one with a final section spiral in form joining the circular section of the upper position by means of rectilinear generatrices, said special form being adapted to create, at the mouthpiece of the tube, a dynamic action on the lubricant in addition to the action caused by the centrifugal effect in the determination of the heads of said device.
  • FIG. It shows the lower part of the crankshaft bearing the tube of the present invention
  • FIG. 2 shows a detailed vertical view of the tube of FIG. 1;
  • FIG. 3 shows a partial bottom view of said tube.
  • shaft 110 of a known compressor is shown in a vertical position. Shaft It) ends below with crankshaft 11 and knob 12. Inside and in an axial position to knob 12, to crankshaft Ill and shaft there runs a duct 13 for the lubricant, marked with a dashed line on FIG. I, communicating with the exterior near knob 12 and shaft 110 so as to convey the oil sucked from the oil sump 14 respectively to lubricate the couplings of crankshaft knob connecting rod head and of shaft support bushing according to a technique normally employed in this field.
  • tube 15 consists of an upper part 16 having a circular section with a longitudinal fissure l7 and a lower part 18 with a transversal section having a variable form. From the spiral form of the lower end (FIG. 3) one passes to the circular section corresponding to the upper part 16 and these two forms of the extreme sections are linked by means of rectilinear generatrices.
  • Interrupted fissure l7 widens as it extends downwards owing to a tapering of part 18 of the tube 15 which, sets slantingly on knob 12, has edges 20 and 21 of the fissure positioned vertically and in line with axis 22 of shaft 10 (FIG. 1).
  • a paddle 19 In the central part of tube 15 is fixed a paddle 19 whose purpose will be illustrated hereinafter. Owing to the rotations of motor shaft 10, the tube rotates with its slanting axis around a vertical rotational axis 22 of shaft 10 and the particles of the lubricant contained in tube 15 will be accelerated upwards, due to the effect of centrifugal force, along the inclined wall of tube 15.
  • Fissure 17 on tube 15 has the task of separating the particles of refrigerating gas sucked with the oil, which would otherwise hinder the regular downflow of the vein of lubricant towards the spots to lubricate.
  • the tube 15 is placed on the shaft 10 in such a way that during rotation of the shaft the degree of eccentricity of the part affected by the fissure is less than that of the full wall of the tube itself.
  • the particles of refrigerating gas being lighter than the particles of the lubricant, go toward the fissure and tend to leave the tube 15 flying upwards.
  • the rotation of the tube in the mass of the lubricant causes, in it, the formation of a rotating surface.
  • the shape of this surface is also affected by the formation of bubbles of refrigerating gas, initiated by the clattering of the tube into the mass of lubricant which, as has been said, is mixed up with particles of refrigerating gas. It has been noticed, during tests, that owing to the special shape of the lower part of the tube 15 the axis 24 of surface 25 is slightly out of center with respect to axis 22 of the motor shaft 10 as is shown by FIG. 1, in which this detail has been enlarged.
  • the bubbles of refrigerating gas fly upwards inside the surface 25 lapping the external surface of tube 15. This gaseous ascension favors the formation, through fissure 117, of the particles of refrigerating gas in the tube and, at the same time, it draws, in its wake, a certain quantity of other particles of refrigerant placed near the mouthpiece of tube 15, thus avoiding their being sucked by the tube itself.
  • the task of paddle 19 fixed to tube 15 consists in stirring the mass of lubricating oil 14 which mixes with the gaseous refrigerant, thus forming bubbles in all the mass of oil according to a contrivance already employed in the specific field.
  • a lubricating device in a compressor with a vertical axis for a refrigerator comprising a tube placed in a slanting position at the end of the crankshaft of the compressor and adapted to pump, by a centrifugal effect, the lubricating oil contained in the lower part of the compressor shell to the couplings to be lubricated of said compressor, said tube having an upper part with a circular section and a lower part, immersed in the lubricant, having the cross-sectional shape ofa spiral arc, in which said spiral arc, from the lower end of said tube, changes form until it becomes of circular crosssection at the lower end of said upper part, to create at the mouthpiece of the tube, a dynamic action on the lubricant in addition to the action due to the centrifugal effect in the determination of the head of the device.
  • the lubricating device of claim 1 wherein said tube has a longitudinal fissure shaped and positioned in such a way as to favor, during the rotation of the tube, the separation of the particles of refrigerating gas mixed up with the lubricant and their elimination from the inside of the tube itself.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
US407467A 1972-10-19 1973-10-18 Lubricating device in compressors for refrigerators Expired - Lifetime US3858685A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT42916/72A IT966696B (it) 1972-10-19 1972-10-19 Dispositivo di lubrificazione in compressori per frigoriferi

Publications (1)

Publication Number Publication Date
US3858685A true US3858685A (en) 1975-01-07

Family

ID=11254706

Family Applications (1)

Application Number Title Priority Date Filing Date
US407467A Expired - Lifetime US3858685A (en) 1972-10-19 1973-10-18 Lubricating device in compressors for refrigerators

Country Status (6)

Country Link
US (1) US3858685A (enrdf_load_stackoverflow)
JP (1) JPS49100606A (enrdf_load_stackoverflow)
DE (1) DE2352402A1 (enrdf_load_stackoverflow)
FR (1) FR2204233A5 (enrdf_load_stackoverflow)
GB (1) GB1424836A (enrdf_load_stackoverflow)
IT (1) IT966696B (enrdf_load_stackoverflow)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4750864A (en) * 1986-04-28 1988-06-14 Carrier Corporation Compressor lubrication and noise reduction system
US5088579A (en) * 1989-09-26 1992-02-18 Samsung Electronics Co., Ltd. Oil pickup structure of a compressor
US6000500A (en) * 1997-05-15 1999-12-14 Samsung Electroincs Co., Ltd. Oil pump for compressor
US6102160A (en) * 1998-05-15 2000-08-15 Copeland Corporation Compressor lubrication
WO2002035096A2 (en) 2000-10-25 2002-05-02 White Consolidated Industries, Inc. Compressor oil pick-up tube
US6527086B2 (en) * 2000-06-13 2003-03-04 Samsung Kwangju Electronics Co., Ltd. Oil supply device for closed reciprocating compressor
US20030161741A1 (en) * 2000-05-30 2003-08-28 Kazuhito Noguchi Closed type electric compressor
US20080223331A1 (en) * 2007-03-13 2008-09-18 Sotiriades Aleko D Pitot engine crankshaft oil pump
US20100158711A1 (en) * 2006-11-13 2010-06-24 Matsushita Electric Industrial Co., Ltd. Compressor
WO2011025458A1 (en) * 2009-08-27 2011-03-03 Panasonic Corporation Lubricant supply tube for compressors
US20120279803A1 (en) * 2011-05-05 2012-11-08 Andrew Rosca Centrifugal lubrication apparatus
US9464572B2 (en) * 2013-12-20 2016-10-11 Pratt & Whitney Canada Corp. Oil tank and scavenge pipe assembly of a gas turbine engine and method of delivering an oil and air mixture to same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR9300797A (pt) * 1993-03-02 1994-10-04 Brasil Compressores Sa Bomba de óleo para compressor hermético de velocidade variável

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2766929A (en) * 1954-11-08 1956-10-16 Gibson Refrigerator Co Compressor and lubricating means therefor
US3049285A (en) * 1959-09-22 1962-08-14 American Motors Corp Refrigerating apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2766929A (en) * 1954-11-08 1956-10-16 Gibson Refrigerator Co Compressor and lubricating means therefor
US3049285A (en) * 1959-09-22 1962-08-14 American Motors Corp Refrigerating apparatus

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4750864A (en) * 1986-04-28 1988-06-14 Carrier Corporation Compressor lubrication and noise reduction system
US5088579A (en) * 1989-09-26 1992-02-18 Samsung Electronics Co., Ltd. Oil pickup structure of a compressor
US6000500A (en) * 1997-05-15 1999-12-14 Samsung Electroincs Co., Ltd. Oil pump for compressor
US6102160A (en) * 1998-05-15 2000-08-15 Copeland Corporation Compressor lubrication
US20030161741A1 (en) * 2000-05-30 2003-08-28 Kazuhito Noguchi Closed type electric compressor
US7021425B2 (en) * 2000-05-30 2006-04-04 Matsushita Refrigeration Company Closed type electric compressor
US6527086B2 (en) * 2000-06-13 2003-03-04 Samsung Kwangju Electronics Co., Ltd. Oil supply device for closed reciprocating compressor
WO2002035096A2 (en) 2000-10-25 2002-05-02 White Consolidated Industries, Inc. Compressor oil pick-up tube
US6484846B1 (en) 2000-10-25 2002-11-26 White Consolidated Industries, Inc. Compressor oil pick-up tube
US20100158711A1 (en) * 2006-11-13 2010-06-24 Matsushita Electric Industrial Co., Ltd. Compressor
US7441529B2 (en) 2007-03-13 2008-10-28 Kohler Co. Pitot engine crankshaft oil pump
US20080223331A1 (en) * 2007-03-13 2008-09-18 Sotiriades Aleko D Pitot engine crankshaft oil pump
WO2011025458A1 (en) * 2009-08-27 2011-03-03 Panasonic Corporation Lubricant supply tube for compressors
US20120160610A1 (en) * 2009-08-27 2012-06-28 Panasonic Corporation Lubricant supply tube for compressors
US20120279803A1 (en) * 2011-05-05 2012-11-08 Andrew Rosca Centrifugal lubrication apparatus
US8746407B2 (en) * 2011-05-05 2014-06-10 Andrew Rosca Centrifugal lubrication apparatus
US8789657B2 (en) * 2011-05-05 2014-07-29 Andrew Rosca Centrifugal lubricating apparatus
US9464572B2 (en) * 2013-12-20 2016-10-11 Pratt & Whitney Canada Corp. Oil tank and scavenge pipe assembly of a gas turbine engine and method of delivering an oil and air mixture to same
US20160305323A1 (en) * 2013-12-20 2016-10-20 Pratt & Whitney Canada Corp. Oil tank and scavenge pipe assembly of a gas turbine engine and method of delivering an oil and air mixture to same
US9650957B2 (en) * 2013-12-20 2017-05-16 Pratt & Whitney Canada Corp. Oil tank and scavenge pipe assembly of a gas turbine engine and method of delivering an oil and air mixture to same

Also Published As

Publication number Publication date
DE2352402A1 (de) 1974-05-09
JPS49100606A (enrdf_load_stackoverflow) 1974-09-24
IT966696B (it) 1974-02-20
GB1424836A (en) 1976-02-11
FR2204233A5 (enrdf_load_stackoverflow) 1974-05-17

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Owner name: NECCHI COMPRESSORI, S.R.L., VIALLE DELLA REPUBBLIC

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:NECCHI SOCIETA PER AZIONI;REEL/FRAME:004847/0576

Effective date: 19880328

Owner name: NECCHI COMPRESSORI, S.R.L.,ITALY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:NECCHI SOCIETA PER AZIONI;REEL/FRAME:004847/0576

Effective date: 19880328