EP1954944B1 - Verdichter - Google Patents

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Publication number
EP1954944B1
EP1954944B1 EP06819841A EP06819841A EP1954944B1 EP 1954944 B1 EP1954944 B1 EP 1954944B1 EP 06819841 A EP06819841 A EP 06819841A EP 06819841 A EP06819841 A EP 06819841A EP 1954944 B1 EP1954944 B1 EP 1954944B1
Authority
EP
European Patent Office
Prior art keywords
oil
crankshaft
chamber
compressor
channel
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.)
Not-in-force
Application number
EP06819841A
Other languages
English (en)
French (fr)
Other versions
EP1954944A1 (de
Inventor
Husnu Kerpicci
Baris Unal
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
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 Arcelik AS filed Critical Arcelik AS
Publication of EP1954944A1 publication Critical patent/EP1954944A1/de
Application granted granted Critical
Publication of EP1954944B1 publication Critical patent/EP1954944B1/de
Not-in-force legal-status Critical Current
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
    • 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

Definitions

  • This invention relates to a compressor wherein means are provided to improve the lubrication of moving parts.
  • hermetic piston compressors In hermetic piston compressors, preferably utilized in cooling devices, lubrication is necessary in order to prevent the moving parts from being affected by friction during operation.
  • the lubrication of the bearings in which the moving parts move is usually achieved by the crankshaft rotation at high revolutions.
  • the lubrication is performed by conveying the oil inside the outer shell of the compressor by means of the oil suction pipe located below the crankshaft. Utilizing the oil inside the compressor, it is achieved to both lubricate the bearings and also to discharge the heat inside the compressor via the upper casing.
  • designing the bearings correctly affects the compressor efficiency and life span directly.
  • VCC variable capacity compressors
  • the aim of the present invention is the realization of a compressor wherein means are provided to improve the lubrication of moving parts at the startup.
  • part of the oil sucked via the suction channel is transferred to the bearing in which the crankshaft moves, by means of a hole on the suction pipe and of a groove located on the outer surface of the crankshaft whereas the other part is transferred to a chamber.
  • the oil reaches the oil transfer channel and is able to climb up to the uppermost portions of the compressor.
  • the other part of the oil passes to the transfer channel via the transfer channel inlet corresponding to the front of the suction channel and climbs up to the upper portions together with the oil coming from the groove.
  • the chamber is divided into compartments.
  • the oil flowing to the chamber leaks from one compartment to another via a passage located below the level of the suction channel outlet of the separator, until the oil level in the compartments at the two sides of the separator is equalized. If the oil rises above the suction pipe, excess oil returns back to the interior of the casing via the suction channel. Thereby, it is achieved that some amount of oil is left inside the chamber when the crankshaft stops moving and at the next startup of the crankshaft the initial oil necessary for the bearing and the crankshaft is easily supplied.
  • the crankshaft incorporates a suction channel positioned inside the suction pipe eccentrically with respect to the middle axis wherein the amount of the oil that is transferred to the bearings via the suction channel positioned eccentrically with respect to the middle axis and the oil suction pipe and thus the efficiency of the compressor is increased.
  • Increasing the flow rate of the oil pumped by the suction pipe causes the inner temperature of the compressor casing and thus the temperature of the entering gas sucked to the cylinder to decrease, improving the thermodynamic efficiency of the compressor.
  • by supplying the bearings with oil rapidly at startup wear at startup is prevented.
  • oil may be transferred to the bearings both at high and low speeds, improving the efficiency.
  • the cycling of the circulation fluid used for cooling purposes is achieved by means of a compressor (1).
  • the compressor (1) comprises a motor (2) and a crankshaft (5) transferring the motion of the motor (2).
  • a fluid by which the motion of the operating parts is facilitated and the heat generated inside is transferred.
  • liquid oil is utilized as the fluid.
  • the crankshaft (5) incorporates a suction pipe (12) fastened to its lower portion whereby oil is sucked and transferred to the upper portions as the pipe (12) moves together with said crankshaft (5) and, a suction channel (11) located inside the suction pipe (12), preferably in a straight cylindrical form whereby the oil sucked is transferred upwards.
  • the crankshaft (5) further comprises a chamber (14) in communication with the suction channel (11), in which the oil sucked via the suction channel (11) accumulates, a groove (17), preferably in helical form, located on the outer surface of the crankshaft (5), providing the oil actuated by the rotary motion to rise and proceed therein, a transfer channel (3) whereby the oil that accumulates inside the chamber (14) and the oil that is transferred by means of said groove (17) is conveyed to upper portions, at least one groove inlet (15) whereby part of the oil coming from the suction channel (11) is transferred to the groove (17) before reaching the chamber (14), a groove outlet (16) connecting the groove (17) and the transfer channel (3) and used to transfer the oil to the transfer channel (3) and, a transfer channel inlet (13) in communication with the chamber (14), whereby the oil inside the chamber (14) is transferred to the transfer channel (3).
  • the oil that rises on the groove (17) passes to the transfer channel (3) via the groove outlet (16) and further rises so as to be skid onto the heated parts located at the upper portion of the crankshaft (5). Meanwhile, part of the oil that cannot enter the groove (17) through the groove inlet (15) continues the movement, reaching the chamber (14) and flowing to the accumulation compartment (7). Since the crankshaft (5) continues its motion, under the effect of generated formes, the oil continues to rise passing to the transfer channel (3) via the transfer channel inlet (13) and further rising towards the upper portions.
  • the chamber (14) incorporates at least one separator (4) which is used to divide the chamber (14) into more than one compartment and whereby the oil flowing therein is accumulated and, at least one passage (6) which is located at the lower-most portion of the separator (4) such that the oil accumulated inside the chamber (14) can easily pass between the compartments and which is sized so as to prevent the oil from being rapidly discharged by controlling the flow rate as the oil passes from one compartment to another.
  • the passage (6) is positioned at a level lower than the end of the suction channel (11), which is communicating with said chamber (14).
  • the chamber (14) that is divided into two compartments by the separator (4) comprises an accumulation compartment (7) in communication with the suction pipe (14) and a reservoir (9) into which the oil transferred to the accumulation compartment (7) passes by leaking through the passage (6) and wherein said oil is preserved when the crankshaft (5) does not move.
  • the crankshaft (5) when the crankshaft (5) starts decelerating, the oil that is elevated by being sucked via the suction pipe (12) and that can not pass to the groove (17) by passing through the groove inlet (15) continues its motion and reaches the chamber (14) and eventually flows into the accumulation compartment (7).
  • the oil inside the suction pipe (12) continues to move and rise for a while and reaches the accumulation compartment (7). Since the forces forcing the upward motion start to decrease, the oil filled in the accumulation compartment (7) passes through the passage (6) into the reservoir (9). The passing continues until the amount of the oil inside the accumulation compartment (7) and the reservoir (9) equalizes.
  • the crankshaft (5) further comprises a suction channel (11), preferably in form of a straight cylinder, which is positioned inside the suction pipe (12) close to the lateral walls, said suction channel, (11) being eccentrically located with respect to the middle center of the suction pipe (12).
  • the suction channel (11) is eccentrically positioned with respect to the middle axis of the suction pipe (12) and the crankshaft (5), the centrifugal effect on the oil suction generated by the motion of the crankshaft (5) is increased. That situation causes the velocity components of the fluid at the inlet cross-section in radial direction to be large.
  • the radial velocity components of the fluid hitting to the inner wall of the crankshaft (5) transform into axial velocity components. Since the radial velocity component is increased particularly at the inlet cross-section, it is achieved that the oil is elevated more rapidly and thus that the amount of oil sucked is increased.
  • crankshaft (5) incorporating a suction channel (11) in form of a straight cylinder is utilized.
  • the amount of oil located inside the chamber (14) and the compressor casing in ac cordance with the present invention which is used to minimize the friction between the crankshaft (5) and the bearing in which said crankshaft (5) moves, particularly at the startup of the crankshaft (5) is transferred to the interior of the crankshaft (5) to be stored above the casing and from there, it is achieved to easily transfer the oil to upper portions.
  • variable capacity compressors (1) operation is performed without any problems at various speeds. Furthermore, as a result of the described improvement on the lubrication system, the flow rate of the oil is increased, facilitating the movement and the discharge of the heat generated inside the compressor (1) to the external medium. By thermodynamically reducing the temperature of the entering gas as a result of the discharge of the heat inside the compressor (1), it is achieved to improve the volumetric efficiency of the compressor (1).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)

Claims (6)

  1. Kompressor (1), verwendet in Haushaltsvorrichtungen, vorzugsweise in Kühlvorrichtungen, umfassend: einen Motor (2) und eine Kurbelwelle (5), die die Bewegung des Motors (2) überträgt und ein Ansaugrohr (12) aufweist, das an ihrem unteren Abschnitt befestigt ist, wodurch das Öl angesaugt und an die oberen Abschnitte geleitet wird, während sich das Rohr (12) zusammen mit der Kurbelwelle (5) bewegt, und einen Ansaugkanal (11), der im Ansaugrohr (12) angeordnet ist, und vorzugsweise eine gerade zylindrische Form aufweist, wodurch das angesaugte Öl nach oben geleitet werden kann, und wobei die Kurbelwelle (5) eine Kammer (14) aufweist, die mit dem Ansaugkanal (11) in Verbindung steht, und in der sich das Öl ansammelt, das über den Ansaugkanal (11) angesaugt wird, gekennzeichnet durch eine vorzugsweise schraubenförmige Nut (17), die an der Außenfläche der Kurbelwelle (5) angeordnet ist, wobei das Öl, das durch die Drehbewegung bewegt wird, darin ansteigt und weiterläuft, einen Übertragungskanal (3), durch den das Öl, das sich in der Kammer (14) ansammelt, und das Öl, das durch die Nut (17) geleitet wird, zu den oberen Abschnitten befördert wird, wenigstens einen Nuteinlass (15), durch den ein Teil des Öls aus dem Ansaugkanal (11) an die Nut (17) geleitet wird, bevor es die Kammer (14) erreicht, und einen Nutauslass (16), der die Nut (17) und den Übertragungskanal (3) miteinander verbindet, und dazu benutzt wird, das Öl zum Übertragungskanal (3) zu leiten.
  2. Kompressor (1) nach Anspruch 1, gekennzeichnet durch eine Kurbelwelle (5), die einen Übertragungskanaleinlass (13) umfasst, der mit der Kammer (14) in Verbindung steht, und durch den das Öl in der Kammer (14) zum Übertragungskanal (3) geleitet wird.
  3. Kompressor (1) nach Anspruch 2, gekennzeichnet durch eine Kurbelwelle (5), die eine Kammer (14) umfasst, die wenigstens ein Trennelement (4) aufweist, das dazu dient, die Kammer (14) in mehr als einen Raum zu unterteilen, und wobei das darin fließende Öl sich ansammelt, einen Sammelraum (7), der mit dem Ansaugrohr (14) in Verbindung steht, und einen Behälter (9), in den das Öl, das zum Sammelraum (7) geleitet wird, eintritt, indem es durch den Durchlass (6) tritt, und durch den das Öl aufgenommen wird, wenn sich die Kurbelwelle (5) nicht bewegt.
  4. Kompressor (1) nach Anspruch 3, gekennzeichnet durch eine Kurbelwelle (5), die eine Kammer (14) aufweist, die wenigstens einen Durchlass (6) aufweist, der am unteren Abschnitt des Trennelements (4) angeordnet ist, derart, dass das Öl, das sich in der Kammer (14) ansammelt, leicht von einem Raum in einen anderen gelangen kann, und der derart abgemessen ist, dass verhindert wird, dass das Öl schnell abgelassen wird, indem die Flussrate geregelt wird, wenn das Öl aus einem Raum in einen anderen gelangt.
  5. Kompressor (1) nach einem der vorangehenden Ansprüche, gekennzeichnet durch eine Kurbelwelle (5), die einen Ansaugkanal (11) aufweist, der im Ansaugrohr (12) in der Nähe der Seitenwände angeordnet ist, derart, dass der Ansaugkanal (11) in Bezug auf die Mitte des Ansaugrohres (12) exzentrisch angeordnet ist.
  6. Kompressor (1) nach Anspruch 5, gekennzeichnet durch eine Kurbelwelle (5), die einen Ansaugkanal (11) in der Form eines geraden Zylinders aufweist.
EP06819841A 2005-11-30 2006-11-29 Verdichter Not-in-force EP1954944B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR200504782 2005-11-30
PCT/EP2006/069070 WO2007063077A1 (en) 2005-11-30 2006-11-29 A compressor

Publications (2)

Publication Number Publication Date
EP1954944A1 EP1954944A1 (de) 2008-08-13
EP1954944B1 true EP1954944B1 (de) 2008-12-31

Family

ID=37772848

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06819841A Not-in-force EP1954944B1 (de) 2005-11-30 2006-11-29 Verdichter

Country Status (5)

Country Link
EP (1) EP1954944B1 (de)
AT (1) ATE419463T1 (de)
DE (1) DE602006004621D1 (de)
DK (1) DK1954944T3 (de)
WO (1) WO2007063077A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016155806A1 (en) * 2015-03-31 2016-10-06 Arcelik Anonim Sirketi Hermetic compressor crankshaft with improved lubrication

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009083359A1 (en) * 2007-12-28 2009-07-09 Arcelik Anonim Sirketi A hermetic compressor
CN110195695B (zh) * 2019-05-27 2020-06-30 广州万宝集团压缩机有限公司 一种曲轴和压缩机

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60192894A (ja) * 1984-03-13 1985-10-01 Mitsubishi Electric Corp スクロ−ル圧縮機
US6527085B1 (en) * 2000-11-14 2003-03-04 Tecumseh Products Company Lubricating system for compressor
JP2004027969A (ja) * 2002-06-26 2004-01-29 Matsushita Refrig Co Ltd 密閉型圧縮機
JP4211351B2 (ja) * 2002-10-21 2009-01-21 パナソニック株式会社 レシプロ型電動圧縮機
KR100538522B1 (ko) * 2003-10-27 2005-12-23 삼성광주전자 주식회사 밀폐형 압축기

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016155806A1 (en) * 2015-03-31 2016-10-06 Arcelik Anonim Sirketi Hermetic compressor crankshaft with improved lubrication

Also Published As

Publication number Publication date
ATE419463T1 (de) 2009-01-15
DK1954944T3 (da) 2009-03-02
DE602006004621D1 (de) 2009-02-12
WO2007063077A1 (en) 2007-06-07
EP1954944A1 (de) 2008-08-13

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