EP2638290B1 - Hermetischer verdichter mit einem ölansaugelement - Google Patents

Hermetischer verdichter mit einem ölansaugelement Download PDF

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Publication number
EP2638290B1
EP2638290B1 EP11781796.5A EP11781796A EP2638290B1 EP 2638290 B1 EP2638290 B1 EP 2638290B1 EP 11781796 A EP11781796 A EP 11781796A EP 2638290 B1 EP2638290 B1 EP 2638290B1
Authority
EP
European Patent Office
Prior art keywords
oil
crankshaft
sucking member
hermetic compressor
disposed
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.)
Active
Application number
EP11781796.5A
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English (en)
French (fr)
Other versions
EP2638290A1 (de
Inventor
Husnu Kerpicci
Alper Yagci
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.)
Arcelik AS
Original Assignee
Arcelik AS
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Filing date
Publication date
Application filed by Arcelik AS filed Critical Arcelik AS
Priority to SI201130882A priority Critical patent/SI2638290T1/sl
Publication of EP2638290A1 publication Critical patent/EP2638290A1/de
Application granted granted Critical
Publication of EP2638290B1 publication Critical patent/EP2638290B1/de
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Anticipated expiration legal-status Critical

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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
    • F04B39/0238—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
    • 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

Definitions

  • the present invention relates to a hermetic compressor comprising an oil sucking member improving the lubrication conditions of the movable members thereof.
  • the sliding bearings wherein the crankshaft operates and the other movable members are lubricated with the oil disposed in the compressor casing.
  • lubrication provides friction losses of the movable members to be decreased, abrasion to be prevented and heat resulting from friction to be removed by decreasing the temperature of the compressor members.
  • the oil at the base of the casing is sucked to be delivered to the bearings and compressor members that are to be lubricated.
  • the centrifugal force that acts on the oil as a result of the rotation of the crankshaft is utilized for delivering the oil at the base of the casing to the bearings.
  • variable capacity compressors used in refrigerators the refrigeration capacity that changes depending on the operating conditions is provided by changing the compressor rotational speed. Since the compressor motor operates at low speed in cases where low capacity is to be met, abrasion may occur in bearings operating in hydrodynamic lubrication conditions.
  • a cylindrical oil sucking member having helical oil transportation grooves is concentrically disposed at the lower end of the crankshaft immersed into oil in the rotation axis of the crankshaft. If the flow rate of the oil delivered is not high enough by means of the oil sucking member, the movable members and the sliding bearings cannot be sufficiently lubricated and abrasion problems occur.
  • the aim of the present invention is the realization of a hermetic compressor comprising an oil sucking member providing the lubrication of the movable members and the oil transportation performance of which is improved.
  • the hermetic compressor realized in order to attain the aim of the present invention, explicated in the first claim and the respective claims thereof comprises a crankshaft mounted to the rotor core and the lower end of which is immersed into the oil in the outer casing, an oil sucking member disposed through the lower end of the crankshaft into the interior thereof and concentrically with the crankshaft and at the outer circumference of which a helical groove is disposed, and the helical groove is narrowed from bottom to top.
  • the helix angle and the pitches of the helical groove are narrowed from the lower end of the oil sucking member towards the upper end thereof extending into the crankshaft, in other words the coils of the helical groove thicken in the upward direction.
  • an oil passage hole is disposed in the crankshaft, providing the oil to be transported to the members to be lubricated at the upper side of the motor, and the upper end of the oil sucking member wherein the helical groove narrows extends up to the oil passage hole level.
  • the helical groove thickened bottom to top of the oil sucking member delivers oil to the lubrication system at a desired flow rate and in a controlled manner, the movable members and the sliding bearings are provided to be effectively lubricated by decreasing lubrication losses and abrasion thereof is decreased.
  • the hermetic compressor (1) comprises a casing (2) supporting the members therein and wherein oil lubricating the movable members is placed, a variable speed motor having a rotor (3) and a stator (4), a piston providing the refrigerant fluid to be delivered to the cooling system in a pressurized state, a cylinder wherein the piston operates, a crankshaft (5) that is snap-fittingly mounted to the core of the rotor (3) in the direction of the rotation axis thereof and that provides the rotational motion of the rotor (3) to be transmitted to the piston, the lower end of which is immersed into the oil in the casing (2) and wherein a gap (B) opening into the body thereof in the axial direction starting from the lower end thereof is disposed, an oil sucking member (7) in cylindrical form, disposed through the lower end of the crankshaft (5) into the interior thereof and concentrically with the crankshaft (5), having a helical groove (6) carrying the oil in the casing (2) to the crankshaft (5), disposed
  • the hermetic compressor (1) of the present invention comprises the oil sucking member (7) having the helical groove (6) that extends from the lower end of the crankshaft (5) in the oil into the crankshaft (5) and that is thickened (narrowed) bottom to top by decreasing the helix angle (A) and the pitch (P) thereof towards the upper end thereof extending into the crankshaft (5), thus providing the oil to be delivered in a controlled manner by lowering the oil flow passing therethrough.
  • the oil sucking member (7) is fixed to the stator (4) by means of the bracket (10) and is stationary in the gap (B) in the crankshaft (5) during the operation of the motor.
  • the lower end of the crankshaft (5) is immersed into the oil in the casing (2) and the oil in the casing (2) is sucked into the crankshaft (5) by the effect of the centrifugal force.
  • the oil is transported upwards into the gap (B) in the crankshaft (5) by means of the helical groove (6) on the oil sucking member (7) concentrically disposed into the crankshaft (5), from this gap (B) to the helical oil transportation path (8) located at the circumference of the crankshaft (5) by means of the oil passage hole (9) and then to the movable members and the sliding bearings on the motor.
  • the helical groove (6) on the oil sucking member (7) is in a bottom-to-top thickened configuration and the oil flow in the helical groove (6) is decreased.
  • the bottom-to-top thickened configuration of the helical groove (6) provides the flow speed of the oil sucked from the casing (2) to be controlled (decreased) without reducing the flow rate of the oil.
  • the oil moving through the helical groove (6) is prevented from leaving the upper end of the oil sucking member (7) at high speed and from returning without entering through the oil passage hole (9) by hitting the inner wall of the crankshaft (5).
  • Oil with desired flow rate is delivered to the oil transportation path (8) in the crankshaft (5) and the movable members on the motor.
  • the upper end of the oil sucking member (7) where the helical groove (6) narrows extends up to the level of the oil passage hole (9) in the crankshaft (5).
  • oil sucked at a desired flow rate and a controlled speed by means of the bottom-to-top narrowed helical groove (6) enters directly into the oil passage hole (9), the risk of oil returning without entering through the oil passage hole (9) by hitting the inner wall of the crankshaft (5), especially the ceiling (T) above the gap (B) is reduced.
  • the upper end of the oil sucking member (7) extends up to a level under the oil passage hole (9) in the crankshaft (5).
  • the risk of oil that leaves the upper end of the oil sucking member (7), reaching up to the ceiling (T) and returning without entering through the oil passage hole (9) by hitting is reduced.
  • the helical groove (6) thickened bottom to top of the oil sucking member (7) that provides oil to be delivered to the crankshaft (5) from the casing (2) delivers the oil to the lubrication system at a desired flow rate and in a controlled manner, the movable members and the sliding bearings are provided to be effectively lubricated by decreasing lubrication losses and abrasion thereof is decreased.

Landscapes

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

Claims (3)

  1. Hermetischer Kompressor (1), umfassend ein Gehäuse (2), das die Elemente darin trägt und in dem Öl zum Schmieren der beweglichen Elemente angeordnet ist, einen Motor mit einem Rotor (3) und einem Stator (4), eine Kurbelwelle (5), die rasten am Kern des Rotors (3) in der Richtung von dessen Drehachse angebracht ist und deren unteres Ende in das Öl in dem Gehäuse (2) getaucht ist, und in der ein Spalt (B) angeordnet ist, der sich in axialer Richtung ausgehend von ihrem unteren Ende in ihren Körper hinein öffnet, ein Ölansaugelement (7) in zylindrischer Form, das durch das untere Ende der Kurbelwelle (5) hindurch in deren Innerem angeordnet ist und mit der Kurbelwelle (5) konzentrisch ist und eine Spiralnut (6) aufweist, die an seinem Außenumfang angeordnet ist, einen Öltransportweg (8), der an der Kurbelwelle (5) angeordnet ist, und eine Öldurchlassbohrung (9), die dafür sorgt, dass das Öl, das in die Kurbelwelle (5) gesaugt wird, zum Öltransportweg (8) geleitet wird, dadurch gekennzeichnet, dass die Spiralnut (6) des Ölansaugelements (7) sich vom unteren Ende der Kurbelwelle (5) im Öl in die Kurbelwelle (5) erstreckt und sich verdickt, indem ihr Spiralwinkel (A) und ihre Steigung (P) von unten nach oben abnehmen.
  2. Hermetischer Kompressor (1) nach Anspruch 1, dadurch gekennzeichnet, dass das obere Ende des Ölansaugelements (7) sich bis zur Höhe der Öldurchlassbohrung (9) in der Kurbelwelle (5) nach oben erstreckt.
  3. Hermetischer Kompressor (1) nach Anspruch 1, dadurch gekennzeichnet, dass das obere Ende des Ölansaugelements (7) sich bis zu einer Höhe unterhalb der Öldurchlassbohrung (9) in der Kurbelwelle (5) nach oben erstreckt.
EP11781796.5A 2010-11-11 2011-11-10 Hermetischer verdichter mit einem ölansaugelement Active EP2638290B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI201130882A SI2638290T1 (sl) 2010-11-11 2011-11-10 Hermetični kompresor, ki obsega sesalni element olja

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR201009413 2010-11-11
PCT/EP2011/069833 WO2012062852A1 (en) 2010-11-11 2011-11-10 A hermetic compressor comprising an oil sucking member

Publications (2)

Publication Number Publication Date
EP2638290A1 EP2638290A1 (de) 2013-09-18
EP2638290B1 true EP2638290B1 (de) 2016-04-20

Family

ID=44936276

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11781796.5A Active EP2638290B1 (de) 2010-11-11 2011-11-10 Hermetischer verdichter mit einem ölansaugelement

Country Status (6)

Country Link
EP (1) EP2638290B1 (de)
CN (1) CN103189648B (de)
BR (1) BR112013011854A2 (de)
ES (1) ES2577933T3 (de)
SI (1) SI2638290T1 (de)
WO (1) WO2012062852A1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016192975A1 (en) * 2015-06-02 2016-12-08 Arcelik Anonim Sirketi Hermetic compressor with an improved lubrication performance
EP3159539A1 (de) 2015-10-21 2017-04-26 Whirlpool S.A. Konstruktive, in kolbenverdichter eingeführte anordnung mit einer schmierölpumpe
CN105952619B (zh) * 2016-06-22 2018-05-04 青岛万宝压缩机有限公司 一种用于全封闭变频压缩机的泵油装置
CN110905771A (zh) * 2019-11-15 2020-03-24 珠海格力节能环保制冷技术研究中心有限公司 用于曲轴的泵油系统、具有其的压缩机及空调器
KR102461070B1 (ko) * 2020-11-27 2022-11-01 엘지전자 주식회사 밀폐형 압축기

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19510015C2 (de) * 1995-03-20 1997-04-30 Danfoss Compressors Gmbh Ölpumpe, insbesondere für einen hermetisch gekapselten Kältemittelkompressor
IT245317Y1 (it) * 1998-07-01 2002-03-20 Zanussi Elettromecc Gruppo motocompressore ermetico perfezionato
KR100395957B1 (ko) 2001-05-18 2003-08-27 주식회사 엘지이아이 밀폐형 압축기의 오일펌핑장치
DE60136016D1 (de) * 2001-07-28 2008-11-13 Lg Electronics Inc Ölzuführungsvorrichtung für kompressor in kühlsystem
CN1255630C (zh) * 2001-12-17 2006-05-10 Lg电子株式会社 双容量压缩机中的曲轴
CN201474913U (zh) * 2009-07-30 2010-05-19 徐洲 一种冰箱压缩机的曲轴结构

Also Published As

Publication number Publication date
CN103189648A (zh) 2013-07-03
CN103189648B (zh) 2015-11-25
ES2577933T3 (es) 2016-07-19
WO2012062852A1 (en) 2012-05-18
EP2638290A1 (de) 2013-09-18
SI2638290T1 (sl) 2016-08-31
BR112013011854A2 (pt) 2016-08-16

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