EP0728946A1 - Smierungsanlage für einen hermetischen Kolbenverdichter - Google Patents

Smierungsanlage für einen hermetischen Kolbenverdichter Download PDF

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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
Application number
EP96100810A
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English (en)
French (fr)
Other versions
EP0728946B1 (de
Inventor
Luca Raffin
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.)
ACC Compressors SpA
Original Assignee
Zanussi Elettrodomestici SpA
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Publication date
Application filed by Zanussi Elettrodomestici SpA filed Critical Zanussi Elettrodomestici SpA
Publication of EP0728946A1 publication Critical patent/EP0728946A1/de
Application granted granted Critical
Publication of EP0728946B1 publication Critical patent/EP0728946B1/de
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
    • F04B39/0261—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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP19960100810 1995-02-23 1996-01-20 Schmierungsvorrichtung für einen hermetischen Kolbenverdichter Expired - Lifetime EP0728946B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT95PN000014 IT238840Y1 (it) 1995-02-23 1995-02-23 Compressore ermetico alternativo con sistema dilubrificazione perfezionato
ITPN950014 1995-02-23

Publications (2)

Publication Number Publication Date
EP0728946A1 true EP0728946A1 (de) 1996-08-28
EP0728946B1 EP0728946B1 (de) 2000-04-05

Family

ID=11395000

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19960100810 Expired - Lifetime EP0728946B1 (de) 1995-02-23 1996-01-20 Schmierungsvorrichtung für einen hermetischen Kolbenverdichter

Country Status (3)

Country Link
EP (1) EP0728946B1 (de)
DE (1) DE69607508T2 (de)
IT (1) IT238840Y1 (de)

Cited By (20)

* Cited by examiner, † Cited by third party
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 (zh) * 1997-10-30 2002-08-21 Lg电子株式会社 密封式压缩机的抽油构件
DE10244562A1 (de) * 2002-09-25 2004-04-08 Danfoss Compressors Gmbh Kältemittelverdichter
WO2004063570A1 (de) * 2003-01-07 2004-07-29 Sundyne Corporation Variables pneumatisches bauelement
KR100693141B1 (ko) * 2001-05-18 2007-03-13 주식회사 엘지이아이 밀폐형 압축기의 오일펌핑장치
KR100745711B1 (ko) * 2001-05-18 2007-08-02 주식회사 엘지이아이 밀폐형 압축기의 오일펌핑장치
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 (ja) * 2008-10-07 2012-03-01 ワールプール・エシ・ア 冷凍圧縮機のオイルポンプ用の取付け装置
WO2013097971A1 (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
WO2013097973A1 (en) * 2011-12-28 2013-07-04 Arcelik Anonim Sirketi A hermetic compressor comprising an oil sucking member
EP2657524A1 (de) * 2012-04-25 2013-10-30 Samsung Electronics Co., Ltd Hermetischer Hubkolbenverdichter
CN103541883A (zh) * 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 密闭式活塞压缩机的油泵和压缩机
CN104632635A (zh) * 2013-11-08 2015-05-20 日立空调·家用电器株式会社 密闭式压缩机
CN104675670A (zh) * 2013-11-28 2015-06-03 三星电子株式会社 压缩机及其制造方法
WO2016192975A1 (en) * 2015-06-02 2016-12-08 Arcelik Anonim Sirketi Hermetic compressor with an improved lubrication performance
CN104632580B (zh) * 2013-11-08 2017-03-01 日立空调·家用电器株式会社 密闭型压缩机及冰箱
EP2728188A3 (de) * 2012-11-06 2017-11-08 Harry Stentoft Nissen Ölpumpe für einen hermetischen Kompressor
CN111486075A (zh) * 2019-01-28 2020-08-04 日立环球生活方案株式会社 压缩机

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106870328B (zh) * 2017-03-30 2018-08-21 浙江迪贝电气股份有限公司 变频压缩机电机螺旋泵油装置用吸油芯管的固定保持结构

Citations (2)

* Cited by examiner, † Cited by third party
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1089405C (zh) * 1997-10-30 2002-08-21 Lg电子株式会社 密封式压缩机的抽油构件
US6450785B1 (en) * 1998-07-01 2002-09-17 Zanussi Elettromeccanica S.P.A. Oil pump for a hermetic compressor
CN1133814C (zh) * 1998-07-01 2004-01-07 扎纳西电机公司 密闭式压缩机的油泵
WO2000001949A1 (en) 1998-07-01 2000-01-13 Zanussi Elettromeccanica S.P.A. Oil pump for a hermetic compressor
KR100693141B1 (ko) * 2001-05-18 2007-03-13 주식회사 엘지이아이 밀폐형 압축기의 오일펌핑장치
KR100745711B1 (ko) * 2001-05-18 2007-08-02 주식회사 엘지이아이 밀폐형 압축기의 오일펌핑장치
DE10244562A1 (de) * 2002-09-25 2004-04-08 Danfoss Compressors Gmbh Kältemittelverdichter
DE10244562B4 (de) * 2002-09-25 2004-10-28 Danfoss Compressors Gmbh Kältemittelverdichter
WO2004063570A1 (de) * 2003-01-07 2004-07-29 Sundyne Corporation Variables pneumatisches bauelement
WO2008052297A1 (en) * 2006-10-31 2008-05-08 Whirlpool S.A. Oil pump for a refrigerating compressor
CN101657639B (zh) * 2006-10-31 2011-11-16 惠而浦股份有限公司 用于制冷压缩机的油泵
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 (ja) * 2008-10-07 2012-03-01 ワールプール・エシ・ア 冷凍圧縮機のオイルポンプ用の取付け装置
EP2916005A1 (de) 2008-10-07 2015-09-09 Whirlpool S.A. Anordnung zur montage einer ölpumpe in einem kühlkompressor
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
WO2013097973A1 (en) * 2011-12-28 2013-07-04 Arcelik Anonim Sirketi A hermetic compressor comprising an oil sucking member
CN104011386A (zh) * 2011-12-28 2014-08-27 阿塞里克股份有限公司 包括吸油构件的封闭式压缩机
CN103375385A (zh) * 2012-04-25 2013-10-30 三星电子株式会社 全封闭往复式压缩机
EP2657524A1 (de) * 2012-04-25 2013-10-30 Samsung Electronics Co., Ltd Hermetischer Hubkolbenverdichter
US9617985B2 (en) 2012-04-25 2017-04-11 Samsung Electronics Co., Ltd. Hermetic reciprocating compressor
CN103541883A (zh) * 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 密闭式活塞压缩机的油泵和压缩机
EP2728188A3 (de) * 2012-11-06 2017-11-08 Harry Stentoft Nissen Ölpumpe für einen hermetischen Kompressor
CN104632635A (zh) * 2013-11-08 2015-05-20 日立空调·家用电器株式会社 密闭式压缩机
CN104632580B (zh) * 2013-11-08 2017-03-01 日立空调·家用电器株式会社 密闭型压缩机及冰箱
CN104675670A (zh) * 2013-11-28 2015-06-03 三星电子株式会社 压缩机及其制造方法
CN104675670B (zh) * 2013-11-28 2019-07-26 三星电子株式会社 压缩机及其制造方法
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 (zh) * 2019-01-28 2020-08-04 日立环球生活方案株式会社 压缩机

Also Published As

Publication number Publication date
ITPN950014V0 (it) 1995-02-23
DE69607508T2 (de) 2001-01-11
ITPN950014U1 (it) 1996-08-23
DE69607508D1 (de) 2000-05-11
EP0728946B1 (de) 2000-04-05
IT238840Y1 (it) 2000-11-15

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