EP0728946A1 - Improvement in the lubricating system for a hermetically sealed reciprocating compressor - Google Patents
Improvement in the lubricating system for a hermetically sealed reciprocating compressor Download PDFInfo
- Publication number
- EP0728946A1 EP0728946A1 EP96100810A EP96100810A EP0728946A1 EP 0728946 A1 EP0728946 A1 EP 0728946A1 EP 96100810 A EP96100810 A EP 96100810A EP 96100810 A EP96100810 A EP 96100810A EP 0728946 A1 EP0728946 A1 EP 0728946A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hermetically sealed
- reciprocating compressor
- stator
- end portion
- sealed reciprocating
- 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.)
- Granted
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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
- F04B39/0261—Hermetic compressors with an auxiliary oil pump
Definitions
- the present invention refers to a hermetically sealed compressor, in particular a compressor of the reciprocating type used to equip household and similar refrigerating apparatuses, provided with a improved type of lubrication system.
- the operation of the compressors of the above cited kind is largely known to be made possible by the presence, inside a hermetically sealed casing containing the main operational elements of the compressor, of a certain amount of lubricant oil which is circulated in a system provided for the lubrication of moving parts. Furthermore, the lubricant oil promotes cooling down of those parts of the compressor which are subject to intense heating due to the presence of compressed gas.
- such arrangements comprise a hollow tapered tube which is mounted coaxially at an end portion of the crankshaft operating a piston with a reciprocating motion.
- the free end portion of said tapered tube is perforated and dipped in a bath of lubricant oil.
- the structure is such that, when the crankshaft rotates at a speed which is not lower than approx. 2700 to 3000 rpm, a pressure system is created that is adapted to take in the oil and circulate it in the lubrication system.
- inside the tapered tube there are provided appropriately coaxial inserts that are adapted to boost the flow rate and the head in the lubrication system.
- crankshaft Although simple and satisfactory at high rotational speeds of the crankshaft, ie. high operating speeds, all such solutions are however substantially ineffective when such an operating speed is relatively low, for instance lower than the above cited value of approx. 2700 to 3000 rpm. Quite to the contrary, in view of minimizing friction, turbulent flow and, in general, in view of substantially reducing energy losses, it would be desirable that, in modern hermetically sealed compressors, the crankshaft, or driving shaft, be able to rotate at substantially reduced speeds, ie. below 2700 rpm.
- the compressor is shown to mainly comprise a hermetically sealed casing 7 which houses at least a piston 8 adapted to slide with a reciprocating movement within a corresponding cylinder provided in a body 12 suspended with spring means within the casing 7.
- Said piston 8 is operated, through a connecting rod 10, by a substantially vertical crankshaft 9 provided with an inner axial cavity 11.
- the hermetically sealed compressor is provided with a system for ensuring appropriate lubrication to its moving parts, said system comprising an array of channels of a per sè known type, which are not shown in the drawing for reasons of greater simplicity of this description.
- Said lubrication system is supplied, through pumping means that will be described with greater detail farther on, from a bath of lubricant oil 13 collected on the bottom of the casing 7.
- said pumping means comprise mainly a helical-screw rotor 14 which combines with an adjacent coaxial stator 15 to define a pumping chamber 16 drawing from said lubricant oil bath 13.
- said stator 15 comprises substantially a bush having a cylindrical cavity in which the rotor 14 is inserted. The latter has an outside diameter that substantially corresponds to the diameter of the afore cited cylindrical cavity, which defines the pumping chamber 16 with the helical thread of the rotor 14.
- the lower end portion of the stator 15 and the rotor 14 is dipped in the lubricant oil bath 13.
- the rotor 14 can be seen to be rotatably integral with the shaft 9.
- said rotor 14 extends axially upwards with a stem 17 that is connected to a surrounding cylindrical bush 18 by means of radial spokes 19.
- the rotor 14, the stem 17, the spokes 19 and the bush 18 are made as a single-piece construction of plastic material.
- the upper end portion of the bush 18 is preferably provided with grooves 20, such as for instance L-shaped grooves, which define two curvilinear, diametrically opposed elastic reeds 21.
- a stud or projection 22 On the outer surface of each said reed 21 there is provided a stud or projection 22.
- the lower end portion of the bush 18 comprises an enlarged axial portion 23 which has a larger diameter both inside and outside.
- the inside diameter of said enlarged portion 23 is slightly larger than the outside diameter of the stator 15, while on its inner surface there is provided a female or similar thread 24, the winding direction of which is similar to the one of the rotor 14.
- the thread 24 combines with the outer wall of the stator 15 to form a corresponding channel substantially in the shape of a spiral.
- the rotor 14 can be readily and easily mounted on to the shaft 9 by inserting the bush 18 axially in the cavity 11 of the same shaft until the free end portion of the latter strikes against the enlarged portion 23 of the rotor. Furthermore, the mutual angular locking effect between the rotor 14 and the shaft 9 is created by the coupling of shapes between the studs 22 of the elastic reeds 21 and corresponding notches 25 provided in the inner surface of the crankshaft.
- the stator 15 is integrally provided with an outer collar 26 having a preferably curvilinear lower surface against which the correspondingly shaped edge 27 of an opening 28 provided in an appropriately shaped attachment bracket 29 abuts.
- the opposite ends of said bracket 29 are attached to the body 12 of the compressor by means of bolts 30 or similar fastening means.
- the stator 15 is inserted in a slack manner in the opening 28 of the bracket 29, by which it is supported axially in place in an articulated manner.
- the axis of the stator 15 can advantageously incline with respect to the vertical, so as to be able to make up for possible displacements or deviations of the suspended body 12 of the compressor and, as a result, to keep a precise alignment with the rotor 14 and the shaft 9.
- stator 15 The angular locking of the stator 15 is ensured by outer radial ribs 31, or similar means, which get inserted axially, in a freely slidable manner, into corresponding notches provided on the edge 27 of the opening 28 of the support bracket.
- the lubricant oil bath 13 is drawn in by the helical-screw pumping means 14, 15 and is sent under pressure into the lubrication system of the compressor passing through the helical pumping chamber 16 via the hollow space comprised between the bush 18 and the stem 17, as well as along the cavity 11 of the shaft 9.
- hermetically sealed compressor may be subject to a number of modifications without departing from the scope of the present invention.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
- The present invention refers to a hermetically sealed compressor, in particular a compressor of the reciprocating type used to equip household and similar refrigerating apparatuses, provided with a improved type of lubrication system.
- The operation of the compressors of the above cited kind is largely known to be made possible by the presence, inside a hermetically sealed casing containing the main operational elements of the compressor, of a certain amount of lubricant oil which is circulated in a system provided for the lubrication of moving parts. Furthermore, the lubricant oil promotes cooling down of those parts of the compressor which are subject to intense heating due to the presence of compressed gas.
- Various arrangements are known in the art which are adapted to cause the lubricant oil to circulate, usually owing to a centrifugal effect, in the lubrication systems of hermetically sealed compressors.
- Generally, such arrangements comprise a hollow tapered tube which is mounted coaxially at an end portion of the crankshaft operating a piston with a reciprocating motion. The free end portion of said tapered tube is perforated and dipped in a bath of lubricant oil. The structure is such that, when the crankshaft rotates at a speed which is not lower than approx. 2700 to 3000 rpm, a pressure system is created that is adapted to take in the oil and circulate it in the lubrication system. In some cases, inside the tapered tube there are provided appropriately coaxial inserts that are adapted to boost the flow rate and the head in the lubrication system.
- Although simple and satisfactory at high rotational speeds of the crankshaft, ie. high operating speeds, all such solutions are however substantially ineffective when such an operating speed is relatively low, for instance lower than the above cited value of approx. 2700 to 3000 rpm. Quite to the contrary, in view of minimizing friction, turbulent flow and, in general, in view of substantially reducing energy losses, it would be desirable that, in modern hermetically sealed compressors, the crankshaft, or driving shaft, be able to rotate at substantially reduced speeds, ie. below 2700 rpm.
- It is therefore a main purpose of the present invention to provide a hermetically sealed reciprocating compressor provided with a simply structured lubrication system which is particularly effective also at substantially reduced rotational speeds of the crankshaft or driving shaft.
- It is a further purpose of the present invention to provide a hermetically sealed compressor of the above cited kind, which comprises a lubrication system provided with particularly simple, low-cost and readily assemblable pumping means.
- According to the present invention, such aims are reached in a hermetically sealed reciprocating compressor provided with a lubrication system including the features as recited in the appended claims.
- The characteristics and the advantages of the present invention will be better understood from the description which is given below by way of non-limiting example with reference to the accompanying drawings in which:
- Figure 1 is a cut-away view of a partially cross-sectioned hermetically sealed reciprocating compressor according to the present invention;
- Figure 2 is an enlarged view of a detail of the compressor illustrated in Figure 1;
- Figure 3 is a side view of a detail of the illustration appearing in Figure 2, as rotated about its axis by approx. 30°;
- Figure 4 is a view of the section taken along the IV-IV line in Figure 3;
- Figure 5 is a view of the section taken along the V-V line in Figure 3; and
- Figure 6 is a view of the longitudinal section of the detail illustrated in Figure 3, in which a screw-like coaxial portion has been removed.
- With particular reference to Figures 1 and 2, the compressor is shown to mainly comprise a hermetically sealed
casing 7 which houses at least apiston 8 adapted to slide with a reciprocating movement within a corresponding cylinder provided in abody 12 suspended with spring means within thecasing 7. Saidpiston 8 is operated, through a connectingrod 10, by a substantiallyvertical crankshaft 9 provided with an inneraxial cavity 11. - The hermetically sealed compressor is provided with a system for ensuring appropriate lubrication to its moving parts, said system comprising an array of channels of a per sè known type, which are not shown in the drawing for reasons of greater simplicity of this description. Said lubrication system is supplied, through pumping means that will be described with greater detail farther on, from a bath of
lubricant oil 13 collected on the bottom of thecasing 7. - According to a feature of the present invention, said pumping means comprise mainly a helical-
screw rotor 14 which combines with an adjacentcoaxial stator 15 to define apumping chamber 16 drawing from saidlubricant oil bath 13. More precisely, saidstator 15 comprises substantially a bush having a cylindrical cavity in which therotor 14 is inserted. The latter has an outside diameter that substantially corresponds to the diameter of the afore cited cylindrical cavity, which defines thepumping chamber 16 with the helical thread of therotor 14. The lower end portion of thestator 15 and therotor 14 is dipped in thelubricant oil bath 13. - Referring now also to Figures 3 through to 6, the
rotor 14 can be seen to be rotatably integral with theshaft 9. In a preferred manner, saidrotor 14 extends axially upwards with astem 17 that is connected to a surroundingcylindrical bush 18 by means ofradial spokes 19. In a preferred manner, therotor 14, thestem 17, thespokes 19 and thebush 18 are made as a single-piece construction of plastic material. Furthermore, the upper end portion of thebush 18 is preferably provided withgrooves 20, such as for instance L-shaped grooves, which define two curvilinear, diametrically opposedelastic reeds 21. On the outer surface of each saidreed 21 there is provided a stud orprojection 22. - The lower end portion of the
bush 18 comprises an enlargedaxial portion 23 which has a larger diameter both inside and outside. In particular, the inside diameter of said enlargedportion 23 is slightly larger than the outside diameter of thestator 15, while on its inner surface there is provided a female orsimilar thread 24, the winding direction of which is similar to the one of therotor 14. Thethread 24 combines with the outer wall of thestator 15 to form a corresponding channel substantially in the shape of a spiral. - The
rotor 14 can be readily and easily mounted on to theshaft 9 by inserting thebush 18 axially in thecavity 11 of the same shaft until the free end portion of the latter strikes against the enlargedportion 23 of the rotor. Furthermore, the mutual angular locking effect between therotor 14 and theshaft 9 is created by the coupling of shapes between thestuds 22 of theelastic reeds 21 andcorresponding notches 25 provided in the inner surface of the crankshaft. - The
stator 15 is integrally provided with anouter collar 26 having a preferably curvilinear lower surface against which the correspondinglyshaped edge 27 of anopening 28 provided in an appropriatelyshaped attachment bracket 29 abuts. The opposite ends of saidbracket 29 are attached to thebody 12 of the compressor by means ofbolts 30 or similar fastening means. - The
stator 15 is inserted in a slack manner in theopening 28 of thebracket 29, by which it is supported axially in place in an articulated manner. As a result, the axis of thestator 15 can advantageously incline with respect to the vertical, so as to be able to make up for possible displacements or deviations of the suspendedbody 12 of the compressor and, as a result, to keep a precise alignment with therotor 14 and theshaft 9. - The angular locking of the
stator 15 is ensured by outerradial ribs 31, or similar means, which get inserted axially, in a freely slidable manner, into corresponding notches provided on theedge 27 of the opening 28 of the support bracket. - In practical operation, when the
rotor 14 rotates together with theshaft 9, thelubricant oil bath 13 is drawn in by the helical-screw pumping means 14, 15 and is sent under pressure into the lubrication system of the compressor passing through thehelical pumping chamber 16 via the hollow space comprised between thebush 18 and thestem 17, as well as along thecavity 11 of theshaft 9. - The rotary motion of the
rotor 14 creates a suction effect that causes thestator 15 to be lifted upwards, so that its upper end portion tends to abut against the inner top portion of the enlargedportion 23. As a result, any possible axial clearance existing between thestator 15 and therotor 14 are hereby substantially eliminated automatically. - In any case, possible lubricant oil seeping through into the thin hollow space comprised between the outer surface of the
stator 15 and the inner wall of the enlargedportion 23 of the rotor is dynamically compensated by thethread 24 which, when therotor 14 is rotating, gives rise to an hydraulic upward thrust in the above cited hollow space. - In conclusion, any seepage of lubricant oil, which could lead to pressure losses in the lubrication system of the compressor, is thereby automatically avoided. As a result, the efficiency level of the pumping means 14, 15 is particularly high, so that the whole lubrication system of the compressor is particularly effective even at relatively low rotational speeds of the
shaft 9. In fact, as it has been demonstrated also experimentally, the hermetically sealed reciprocating compressor according to the present invention is effectively lubricated even at rotational speeds of theshaft 9 situated in a range of approx. 1,000 to 1,200 rpm. - Furthermore, the substantial simplicity of construction and assembly of the hermetically sealed reciprocating compressor according to the present invention can be clearly inferred from the above given description.
- It will be appreciated the the above described hermetically sealed compressor may be subject to a number of modifications without departing from the scope of the present invention.
Claims (7)
- Hermetically sealed reciprocating compressor comprising a hermetically sealed casing in which at least a piston is operable by a rotating shaft, an end portion of which rotatably drives pumping means adapted to supply a lubrication system of the compressor with lubricant oil from a lubricant oil bath contained in the casing, characterized in that said pumping means include a helical-screw rotor (14) which is driven by said rotating shaft (9) and combines with an adjacent coaxial stator (15) to define a pumping chamber (16) dipped in said lubricant oil bath (13).
- Hermetically sealed reciprocating compressor according to claim 1, characterized in that the stator (15) is mounted in an articulated manner by means of support means (29).
- Hermetically sealed reciprocating compressor according to claim 2, characterized in that the stator (15) comprises a substantially cylindrical bush provided with an outer collar (26) having a curvilinear lower surface against which a correspondingly shaped edge (27) of an opening (28) provided in a support bracket (29) attached to the body (12) of the compressor abuts, said stator (15) being additionally provided with at least a radial rib (31) that gets inserted in an axially slidable manner in a corresponding notch provided in said shaped edge (27).
- Hermetically sealed reciprocating compressor according to claim 1, characterized in that said rotor (14) extends axially upwards with a stem (17) that is connected to a surrounding cylindrical bush (18) by means of spokes (19), the upper end portion of said bush (18) being snap-fitted to said end portion of the rotating shaft (9).
- Hermetically sealed reciprocating compressor according to claim 4, wherein the rotating shaft comprises an inner axial cavity, characterized in that the upper end portion of the bush (18) is inserted axially in said cavity (11) of the shaft (9) and comprises curvilinear elastic reeds (21) on the outer surface of which there are provided respective studs or similar projections (22) which get locked by the coupling of shapes into corresponding notches (25) provided in the inner surface of the rotating shaft (9).
- Hermetically sealed reciprocating compressor according to claim 4, characterized in that the lower end portion of the bush (18) comprises an enlarged axial portion (23) having a larger diameter both inside and outside, in the inner surface of which there is provided a female or similar thread (24) having the same winding direction as the helical-screw rotor (14) and combining with the outer wall of the stator (15) to form a corresponding spiral-shaped channel
- Hermetically sealed reciprocating compressor according to claim 6, characterized in that said rotor (14), the stem (17), the spokes (19), the reeds (21) and said enlarged portion (23) are made in the form of a single-piece construction.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITPN950014 IT238840Y1 (en) | 1995-02-23 | 1995-02-23 | HERMETIC ALTERNATIVE COMPRESSOR WITH PERFECTED DILUBRIFICATION SYSTEM |
ITPN950014 | 1995-03-07 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0728946A1 true EP0728946A1 (en) | 1996-08-28 |
EP0728946B1 EP0728946B1 (en) | 2000-04-05 |
Family
ID=11395000
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19960100810 Expired - Lifetime EP0728946B1 (en) | 1995-02-23 | 1996-01-20 | Improvement in the lubricating system for a hermetically sealed reciprocating compressor |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0728946B1 (en) |
DE (1) | DE69607508T2 (en) |
IT (1) | IT238840Y1 (en) |
Cited By (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000001949A1 (en) | 1998-07-01 | 2000-01-13 | Zanussi Elettromeccanica S.P.A. | Oil pump for a hermetic compressor |
CN1089405C (en) * | 1997-10-30 | 2002-08-21 | Lg电子株式会社 | Oil pickup member for hermetic compressor |
DE10244562A1 (en) * | 2002-09-25 | 2004-04-08 | Danfoss Compressors Gmbh | Coolant compressor has pump housing enclosing lower sector of drive shaft, which is directly connected to driven displacement element |
WO2004063570A1 (en) * | 2003-01-07 | 2004-07-29 | Sundyne Corporation | Internal lubrication screw pump for hollow shaft |
KR100693141B1 (en) * | 2001-05-18 | 2007-03-13 | 주식회사 엘지이아이 | Oil Pumping apparatus for hermetic compressor |
KR100745711B1 (en) * | 2001-05-18 | 2007-08-02 | 주식회사 엘지이아이 | Oil Pumping apparatus for hermetic compressor |
WO2008052297A1 (en) * | 2006-10-31 | 2008-05-08 | Whirlpool S.A. | Oil pump for a refrigerating compressor |
US8079830B2 (en) | 2008-05-27 | 2011-12-20 | Danfoss A/S | Refrigerant compressor |
JP2012505331A (en) * | 2008-10-07 | 2012-03-01 | ワールプール・エシ・ア | Mounting device for oil pump of refrigeration compressor |
WO2013097973A1 (en) * | 2011-12-28 | 2013-07-04 | Arcelik Anonim Sirketi | A hermetic compressor comprising an oil sucking member |
WO2013098130A1 (en) * | 2011-12-27 | 2013-07-04 | Arcelik Anonim Sirketi | A compressor comprising an oil sucking member |
WO2013097971A1 (en) * | 2011-12-28 | 2013-07-04 | Arcelik Anonim Sirketi | A hermetic compressor comprising an oil sucking member |
EP2657524A1 (en) * | 2012-04-25 | 2013-10-30 | Samsung Electronics Co., Ltd | Hermetic reciprocating compressor |
CN103541883A (en) * | 2012-07-17 | 2014-01-29 | 珠海格力节能环保制冷技术研究中心有限公司 | Oil pump of closed type piston compressor and compressor |
CN104632635A (en) * | 2013-11-08 | 2015-05-20 | 日立空调·家用电器株式会社 | Sealed compressor |
CN104675670A (en) * | 2013-11-28 | 2015-06-03 | 三星电子株式会社 | Compressor and manufacturing method thereof |
WO2016192975A1 (en) * | 2015-06-02 | 2016-12-08 | Arcelik Anonim Sirketi | Hermetic compressor with an improved lubrication performance |
CN104632580B (en) * | 2013-11-08 | 2017-03-01 | 日立空调·家用电器株式会社 | Hermetic type compressor and refrigerator |
EP2728188A3 (en) * | 2012-11-06 | 2017-11-08 | Harry Stentoft Nissen | An oil pump for a hermetic compressor |
CN111486075A (en) * | 2019-01-28 | 2020-08-04 | 日立环球生活方案株式会社 | Compressor with a compressor housing having a plurality of compressor blades |
Families Citing this family (1)
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---|---|---|---|---|
CN106870328B (en) * | 2017-03-30 | 2018-08-21 | 浙江迪贝电气股份有限公司 | The fixation holding structure of inverter compressor motor spiral oil pumping device oil suction core pipe |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB768058A (en) * | 1954-02-18 | 1957-02-13 | Heinz Teves | Lubricating device for a motor-driven air compressor |
WO1993022557A1 (en) * | 1992-05-04 | 1993-11-11 | Empresa Brasileira De Compressores S/A. - Embraco | Oil pump for a variable speed hermetic compressor |
-
1995
- 1995-02-23 IT ITPN950014 patent/IT238840Y1/en active IP Right Grant
-
1996
- 1996-01-20 DE DE1996607508 patent/DE69607508T2/en not_active Expired - Fee Related
- 1996-01-20 EP EP19960100810 patent/EP0728946B1/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB768058A (en) * | 1954-02-18 | 1957-02-13 | Heinz Teves | Lubricating device for a motor-driven air compressor |
WO1993022557A1 (en) * | 1992-05-04 | 1993-11-11 | Empresa Brasileira De Compressores S/A. - Embraco | Oil pump for a variable speed hermetic compressor |
Cited By (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1089405C (en) * | 1997-10-30 | 2002-08-21 | Lg电子株式会社 | Oil pickup member for hermetic compressor |
US6450785B1 (en) * | 1998-07-01 | 2002-09-17 | Zanussi Elettromeccanica S.P.A. | Oil pump for a hermetic compressor |
CN1133814C (en) * | 1998-07-01 | 2004-01-07 | 扎纳西电机公司 | Oil pump for a hermetic compressor |
WO2000001949A1 (en) | 1998-07-01 | 2000-01-13 | Zanussi Elettromeccanica S.P.A. | Oil pump for a hermetic compressor |
KR100693141B1 (en) * | 2001-05-18 | 2007-03-13 | 주식회사 엘지이아이 | Oil Pumping apparatus for hermetic compressor |
KR100745711B1 (en) * | 2001-05-18 | 2007-08-02 | 주식회사 엘지이아이 | Oil Pumping apparatus for hermetic compressor |
DE10244562A1 (en) * | 2002-09-25 | 2004-04-08 | Danfoss Compressors Gmbh | Coolant compressor has pump housing enclosing lower sector of drive shaft, which is directly connected to driven displacement element |
DE10244562B4 (en) * | 2002-09-25 | 2004-10-28 | Danfoss Compressors Gmbh | Refrigerant compressor |
WO2004063570A1 (en) * | 2003-01-07 | 2004-07-29 | Sundyne Corporation | Internal lubrication screw pump for hollow shaft |
WO2008052297A1 (en) * | 2006-10-31 | 2008-05-08 | Whirlpool S.A. | Oil pump for a refrigerating compressor |
CN101657639B (en) * | 2006-10-31 | 2011-11-16 | 惠而浦股份有限公司 | Oil pump for a refrigerating compressor |
US8202067B2 (en) | 2006-10-31 | 2012-06-19 | Whirlpool S.A. | Oil pump for a refrigerating compressor |
US8079830B2 (en) | 2008-05-27 | 2011-12-20 | Danfoss A/S | Refrigerant compressor |
JP2012505331A (en) * | 2008-10-07 | 2012-03-01 | ワールプール・エシ・ア | Mounting device for oil pump of refrigeration compressor |
EP2916005A1 (en) | 2008-10-07 | 2015-09-09 | Whirlpool S.A. | Mounting arrangement for an oil pump in a refrigeration compressor |
WO2013098130A1 (en) * | 2011-12-27 | 2013-07-04 | Arcelik Anonim Sirketi | A compressor comprising an oil sucking member |
WO2013097973A1 (en) * | 2011-12-28 | 2013-07-04 | Arcelik Anonim Sirketi | A hermetic compressor comprising an oil sucking member |
WO2013097971A1 (en) * | 2011-12-28 | 2013-07-04 | Arcelik Anonim Sirketi | A hermetic compressor comprising an oil sucking member |
CN104011386A (en) * | 2011-12-28 | 2014-08-27 | 阿塞里克股份有限公司 | A hermetic compressor comprising an oil sucking member |
CN103375385A (en) * | 2012-04-25 | 2013-10-30 | 三星电子株式会社 | Hermetic reciprocating compressor |
EP2657524A1 (en) * | 2012-04-25 | 2013-10-30 | Samsung Electronics Co., Ltd | Hermetic reciprocating compressor |
US9617985B2 (en) | 2012-04-25 | 2017-04-11 | Samsung Electronics Co., Ltd. | Hermetic reciprocating compressor |
CN103541883A (en) * | 2012-07-17 | 2014-01-29 | 珠海格力节能环保制冷技术研究中心有限公司 | Oil pump of closed type piston compressor and compressor |
EP2728188A3 (en) * | 2012-11-06 | 2017-11-08 | Harry Stentoft Nissen | An oil pump for a hermetic compressor |
CN104632635A (en) * | 2013-11-08 | 2015-05-20 | 日立空调·家用电器株式会社 | Sealed compressor |
CN104632580B (en) * | 2013-11-08 | 2017-03-01 | 日立空调·家用电器株式会社 | Hermetic type compressor and refrigerator |
CN104675670A (en) * | 2013-11-28 | 2015-06-03 | 三星电子株式会社 | Compressor and manufacturing method thereof |
CN104675670B (en) * | 2013-11-28 | 2019-07-26 | 三星电子株式会社 | Compressor and its manufacturing method |
US10378527B2 (en) | 2013-11-28 | 2019-08-13 | Samsung Electronics Co., Ltd. | Compressor |
WO2016192975A1 (en) * | 2015-06-02 | 2016-12-08 | Arcelik Anonim Sirketi | Hermetic compressor with an improved lubrication performance |
CN111486075A (en) * | 2019-01-28 | 2020-08-04 | 日立环球生活方案株式会社 | Compressor with a compressor housing having a plurality of compressor blades |
Also Published As
Publication number | Publication date |
---|---|
ITPN950014U1 (en) | 1996-08-23 |
DE69607508D1 (en) | 2000-05-11 |
EP0728946B1 (en) | 2000-04-05 |
IT238840Y1 (en) | 2000-11-15 |
DE69607508T2 (en) | 2001-01-11 |
ITPN950014V0 (en) | 1995-02-23 |
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