US3858685A - Lubricating device in compressors for refrigerators - Google Patents

Lubricating device in compressors for refrigerators Download PDF

Info

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
Authority
US
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
Application number
US407467A
Inventor
Luigi Bono
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.)
Necchi Compressori Srl
Original Assignee
Necchi SpA
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 Necchi SpA filed Critical Necchi SpA
Application granted granted Critical
Publication of US3858685A publication Critical patent/US3858685A/en
Assigned to NECCHI COMPRESSORI, S.R.L. reassignment NECCHI COMPRESSORI, S.R.L. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: NECCHI SOCIETA PER AZIONI
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F04B39/0238—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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)

Abstract

A lubricating device in a compressor with a vertical axis for a refrigerator which includes a tube having an upper part with a circular section and a lower part whose lower end section has a spiral shape which is linked with a circular section of the upper part of the tube by means of rectilinear generatrices. The tube also has a longitudinal fissure and a paddle fixed to its central part. The tube is placed in a slanting position at the end of the crankshaft of the compressor and rotates therewith to pump oil from the sump to the parts needing lubrication while at the same time separating particles of refrigerating gas from the oil.

Description

[ Jan. 7, 1975 lllite States Patent 11 1 Bone 3,049,285 8/1962 l84/6.l8 X
[ LUBRICATING DEVICE 1N COMPRESSORS FOR REFRIGERATORS & r k M .m nV aO 68D D u 10.0 0 a .6 e F v. m m S 6 Maw. l W60 "7 .m m m 6 ae m m Em VJ Wm Hum m o n ma PAA .m v a Dr :L, n 0 .1 1 m mr e .m P Mm P u 90 MS m B im g mE L N w n m w v .mA l 53 77 l l Mosher Italy ABSTRACT [22] Filed: Oct. 18, 1973 [.21.] 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. 3 3 a Um 0 00F 7 m 4 S m T 4 .8 N w m B E 5 6,101 MM 14 t .lP 6 0/ 4 SE 4 8 e m 1 T m 9 m m w H m Mn 6 D R E a .e M L m U I. Smfm UHF H N m 555 5 2,766,929 10/1956 Rusch et 417/372 x 3 Claims, 3 Drawing Figures LUBRICATING DEVICE IN COMPRESSORS FOR REFRIGERATORS 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 solution of the technical problem is found in 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.
Further advantages and characteristics thereof will be evidenced in the following non-limiting description ofa preferred embodiment of the present invention and in the attached drawings, in which:
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; and
FIG. 3 shows a partial bottom view of said tube.
In FIG. ll, 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.
Set on the lower part of the crankshaft knob 12, near the lower end of duct 13, is tube 15, whose lower part is immersed in oil sump M.
With reference to FIG. 2, 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). 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.
To this main pumping effect, already known, is added, in accordance with the object of the present invention, a second effect derived from the special form for part 18 of tube 15.
With reference to FIG. 3, when a particle 23 of lubricant comes into contact with the internal wall of tube 15 having a transversal section with a spiral shape the particle is subject to a dynamic action, owing to the rotation of the spiral around axis 22, which initiates a thrust of the particle 23 against the wall of tube 15. The component of thrust along the inclined wall of the tube 15 constitutes a secondary effect which is added to the main centrifugal effect and increases, to a degree, the dynamic term of the energy possessed by the particle with the consequent increase of the pump head. 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.
This phenomenon is favored also by the fact that in operation a part of fissure l7 occupies the depression within the rotating surface 25, which is formed by the joint action of the rotation of tube 15, and by the formation of bubbles of refrigerating gas caused by said rotation.
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.
These bubbles reduce the possibility of the oil transmitting noise from the internal sources to the outer shell of the compressor.
What is claimed is:
1. 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.
2. 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.
3. The lubricating device of claim 1, wherein said tube carries, fixed in its central part, a paddle which upon rotating with the tube stirs the lubricating mass in the shell in order to favor the formation, in it, of bubbles of refrigerating gas for reducing the possibility of the oil to transmit, to the shell, the noise produced in the compressor.
* l= l =l

Claims (3)

1. 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 of a spiral arc, in which said spiral arc, from the lower end of said tube, changes form until it becomes of circular cross-section 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.
2. 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.
3. The lubricating device of claim 1, wherein said tube carries, fixed in its central part, a paddle which upon rotating with the tube stirs the lubricating mass in the shell in order to favor the formation, in it, of bubbles of refrigerating gas for reducing the possibility of the oil to transmit, to the shell, the noise produced in the compressor.
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 (en) 1972-10-19 1972-10-19 LUBRICATION DEVICE IN COMPRESSORS FOR REFRIGERATORS

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 (en)
JP (1) JPS49100606A (en)
DE (1) DE2352402A1 (en)
FR (1) FR2204233A5 (en)
GB (1) GB1424836A (en)
IT (1) IT966696B (en)

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 (en) * 1993-03-02 1994-10-04 Brasil Compressores Sa Oil pump for hermetic variable speed compressor

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
JPS49100606A (en) 1974-09-24
FR2204233A5 (en) 1974-05-17
IT966696B (en) 1974-02-20
GB1424836A (en) 1976-02-11
DE2352402A1 (en) 1974-05-09

Similar Documents

Publication Publication Date Title
US3858685A (en) Lubricating device in compressors for refrigerators
CN102575662B (en) Compressor
US5088579A (en) Oil pickup structure of a compressor
US3410478A (en) Lubricating device for a motor compressor
JP2008516123A (en) Hermetic compressor
US4747471A (en) Compressor lubrication system
US2990111A (en) Refrigerating apparatus
CN101943156B (en) Pump oil structure applied to full-closed refrigeration compressor
US3194490A (en) Lubricating device for a motor compressor
JP2006342722A (en) Compressor
CN103189648B (en) Comprise the hermetic compressor of oil suction component
KR860009237A (en) Scroll fluid machine
CN1004570B (en) Compressor lubrication and noise reduction system
CN102454580A (en) Hermetic compressor
JPS6128838B2 (en)
CN105715511A (en) Compressor
CN110905771A (en) Oil pumping system for crankshaft, compressor with oil pumping system and air conditioner
CN100432431C (en) Hermetic-type compressor
CN100489306C (en) Compressor
CN109083826A (en) Hermetic type compressor and the equipment for having used the hermetic type compressor
JPH09512315A (en) Oil pump for variable speed airtight compressor
CN218625023U (en) Compressor crankshaft
JP5045521B2 (en) Hermetic compressor
CN210599435U (en) Oiling assembly for horizontal compressor, horizontal compressor and air conditioner system
JP2006105064A (en) Compressor

Legal Events

Date Code Title Description
AS Assignment

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