EP3017194B1 - Thermisch verbesserter hermetisch gekapselter kolbenverdichter - Google Patents

Thermisch verbesserter hermetisch gekapselter kolbenverdichter Download PDF

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Publication number
EP3017194B1
EP3017194B1 EP13735006.2A EP13735006A EP3017194B1 EP 3017194 B1 EP3017194 B1 EP 3017194B1 EP 13735006 A EP13735006 A EP 13735006A EP 3017194 B1 EP3017194 B1 EP 3017194B1
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EP
European Patent Office
Prior art keywords
shaft
cylinder head
hole
exhaust
hermetic compressor
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
EP13735006.2A
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English (en)
French (fr)
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EP3017194A1 (de
Inventor
Bilgin Hacioglu
Ozkan OZTURK
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
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Arcelik AS
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Publication date
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Priority to SI201330630A priority Critical patent/SI3017194T1/sl
Publication of EP3017194A1 publication Critical patent/EP3017194A1/de
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Publication of EP3017194B1 publication Critical patent/EP3017194B1/de
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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
    • F04B39/0027—Pulsation and noise damping means
    • F04B39/0055—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes
    • F04B39/0072—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes characterised by assembly or mounting
    • 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
    • F04B39/0027—Pulsation and noise damping means
    • F04B39/0055—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes
    • 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
    • F04B39/0027—Pulsation and noise damping means
    • F04B39/0055—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes
    • F04B39/0061—Pulsation and noise damping means with a special shape of fluid passage, e.g. bends, throttles, diameter changes, pipes using muffler volumes
    • 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
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/123—Fluid connections
    • 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
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/125—Cylinder heads

Definitions

  • the present invention relates to a reciprocating compressor for use in refrigeration appliance such as a domestic refrigerator, and particularly to a coupling suitable for hermetically joining an exhaust tube directly to a cylinder head of the reciprocating compressor.
  • a refrigeration appliance such as a domestic refrigerator typically utilizes a reciprocating compressor to convey the refrigerant from an evaporator to a condenser.
  • the reciprocating compressor e.g. as disclosed in US 5,205,719 (A ) generally comprises a compression chamber, a suction chamber, and an exhaust chamber.
  • the suction chamber is located on a downstream side of the evaporator whereas the exhaust chamber is located on an upstream side of the condenser.
  • the compression chamber is formed within the cylinder block.
  • the suction chamber and the exhaust chamber are separately formed within the cylinder head.
  • a valve plate is interposed between the cylinder block and the cylinder head. By virtue of the valve plate, the compression chamber is selectively brought into fluid connection with the suction chamber and the exhaust chamber.
  • the valve plate generally comprises an intake port and exhaust port.
  • the intake port and exhaust port are typically configured by diaphragm check valves which allow the refrigerant to flow only in a single direction.
  • the intake port fluidly connects the suction chamber with the compression chamber upon suction of a piston located in the compression chamber.
  • the exhaust port fluidly connects the compression chamber with the exhaust chamber upon compression of the piston.
  • the reciprocating movement of the piston induces pressure waves in the refrigerant, which have a detrimental effect on the components of the compressor. Therefore, the refrigerant in the exhaust chamber is initially guided through an exhaust passage to an exhaust silencer for attenuating the pressure pulsation of the refrigerant, prior to returning the same to the refrigeration circuit of the refrigeration appliance.
  • the temperature of the refrigerant in the exhaust chamber is considerably higher than the temperature of the refrigerant in the suction chamber due to the compression effectuated to the refrigerant by the piston. Consequently, the excess heat of the refrigerant in the exhaust passage is partly released to the other components of the compressor such as the compression chamber, the suction chamber, a motor and the like which are in the vicinity of the exhaust passage. Hence, an overall efficiency of the compressor decreases. Therefore, heat transfer from the exhaust refrigerant to the aforementioned critical components of the compressor must be reduced.
  • US 5,288,212 (A ) discloses a hermetic reciprocating compressor which includes an exhaust chamber and a suction chamber wherein the cover walls of the exhaust chamber and a suction chamber are spaced apart from each other by a predetermined clearance.
  • a thermal insulation plate is installed in the suction chamber.
  • An objective of the present invention is to provide a reciprocating compressor, and a refrigeration appliance having the same, which overcomes the aforementioned problems, and effectively reduces heat transfer from the exhaust refrigerant to the critical components of the compressor.
  • the exhaust silencer for attenuating pressure pulsation of refrigerant received from the exhaust chamber is separately provided from the cylinder head.
  • the reciprocating compressor according to the present invention further comprises a metal exhaust tube for guiding the refrigerant from the exhaust chamber to the exhaust silencer; and a metal coupling for fluidly connecting an interior of the exhaust chamber with the exhaust tube.
  • the coupling according to the present invention includes: a metal body penetrating throughout a through hole formed in a wall portion of the cylinder head; a hollow part being formed in the metal body, defining a refrigerant flow path from the exhaust chamber to the exhaust tube; a first fixing part integrally provided with the metal body, threadably securing the body to the cylinder head; and a second fixing part integrally provided with the metal body, for gas-tightly joining, an opening of the exhaust tube to the hollow part by a welding joint.
  • the coupling is provided in form of a metal bolt, preferably made of steel.
  • the bolt has a threaded shaft which is threadably engaged with an internal thread of the through hole formed into the wall portion of cylinder head.
  • the shaft has a through bore along its axis which serves as the refrigerant flow path.
  • the shaft partly projects out of the cylinder head.
  • the exhaust tube is joined, by welding to a tip end of the shaft projecting out of the cylinder head.
  • An opening of the exhaust tube is in fluid communication with an opening of the through bore of the shaft.
  • the bolt has a head which secures the shaft to the through hole in the wall portion of the cylinder head.
  • the bolt is firmly screwed into the wall portion.
  • the bolt is alternatively fastened to the wall portion of the exhaust chamber by a nut screwed onto the threaded shaft projecting out of the cylinder head. In this embodiment, it is has been dispensed with to form an internal thread into the wall portion enclosing the through hole.
  • the inner diameter of the through bore is substantially constant along the shaft and matches with an inner diameter of the exhaust tube. Thereby, uniform flow impedance is attained. A pressure drop in the exhaust refrigerant flow is prevented and an efficient operation of the compressor is safeguarded.
  • the cylinder head is made of aluminum.
  • the aluminum cylinder head has improved corrosion resistance.
  • both the exhaust tube and the coupling are made of steel. Thereby, the exhaust tube can be joined to the coupling by welding. Such welding joint is robust and also reliable in view of gas-tightness.
  • the reciprocating hermetic compressor (1) is suitable for use in a refrigeration appliance, in particular a domestic refrigerator (not shown) comprises a cylinder block (2) having a compression chamber (3), a cylinder head (4) having a suction chamber (5) and separately therefrom, an exhaust chamber (6), each being in fluid connection with the compression chamber (3) through a valve plate (7) interposed between the cylinder block (2) and the cylinder head (4) an exhaust silencer, separately provided from the cylinder head (4) for attenuating pressure pulsation of refrigerant received from the exhaust chamber (6) ( Fig. 1 ).
  • the reciprocating hermetic compressor (1) further comprises a metal exhaust tube (8) for guiding the refrigerant in the exhaust chamber (6) to the exhaust silencer (not shown), a metal coupling (9) for fluidly connecting an interior of the exhaust chamber (6) with the exhaust tube (8), said coupling (9) including a metal body penetrating throughout a through hole (10) formed in a wall portion (11) of the cylinder head (4), a hollow part formed in the metal body, defining a refrigerant flow path from the exhaust chamber (6) to the exhaust tube (8), a first fixing part integrally provided with the metal body, threadably securing the body to the cylinder head (4) and a second fixing part integrally provided with the metal body, gas-tightly joining, an opening of the exhaust chamber (6) to the hollow part by a welding joint ( Figs. 2 and 3 ; Figs. 9 and 10 ).
  • the coupling (9) is manufactured as a metal bolt, preferably made from steel ( Figs. 4 and 5 ).
  • the bolt includes a shaft (12) which penetrates throughout said through hole (10) ( Figs. 2, 3 , 5 , and 8 ).
  • a through bore (13) is formed along the shaft (12), which configures the hollow part ( Fig. 5 ).
  • the bolt further includes a head (14) which abuts against an inner wall portion (11) of the cylinder head (4), surrounding the through hole (10) ( Figs. 5 and 8 ).
  • the bolt further includes a first thread (15) which is formed on the shaft (12) for threadably engaging with a second thread (16) which is formed inside said through hole (10) of the cylinder head (4) ( Figs.
  • the head (14) and the first tread (15) configure the first fixing part.
  • a tip end of the shaft (12) projects out of the through hole (10) ( Figs. 2, 3 , and 8 ).
  • a tip end of the shaft (12) configures the second fixing part.
  • the exhaust tube (8) is welded to said tip end of the shaft (15) ( Figs. 2, 3 , and 8 )
  • the first thread (15) is formed just behind the head (14) of the bolt to oppose said second thread (16) when the head (14) abuts against the inner wall portion (11) ( Fig. 5 to 7 ). Thereby, a tight engagement between the wall portion (11) and the bolt is attained.
  • a second thread (16) has not been formed inside the through hole (10) of the cylinder head (4) ( Figs. 11 and 12 ). Instead, a nut (17) is used for fastening the bolt ( Fig. 13 ).
  • the coupling (9) is also provided in form of a metal bolt ( Figs. 4 and 5 ).
  • the bolt includes a shaft (12) which penetrates throughout said through hole (10) in the cylinder head (4) ( Figs. 9, 10 , and 13 ).
  • a through bore (13) is formed along the shaft (12), which configures the hollow part ( Fig. 5 ).
  • the bolt further includes a head (14) which abuts against an inner wall portion (11) of the cylinder head (4), surrounding the through hole (10) ( Figs. 5 and 13 ).
  • the bolt further includes a first thread (15) formed on the shaft (12), which receives a nut (17) that abuts against an outer wall portion (11) of the cylinder head (4), surrounding the through hole (10) ( Figs. 5 , 9 to 13 ).
  • the head (14), the first tread (15), and the nut (17) configure the first fixing part.
  • a tip end of the shaft (12) projects out of the through hole (10) ( Figs. 9, 10 , and 13 ).
  • said tip end of the shaft (12) configures the second fixing part.
  • the exhaust tube (8) is welded to said tip end of the shaft (12) ( Figs. 9, 10 , and 13 ).
  • the first thread (15) is formed on a portion of the shaft (12) which projects out of the through hole (10) ( Figs. 9, 10 , and 13 ). Thereby, the nut (17) can be tightly screwed onto the shaft (12).
  • an inner diameter of the through bore (16) is constant along the shaft (12) and matches with an inner diameter of the exhaust tube (8) ( Fig. 5 , 8 and 13 ).
  • the head (14) has a flange (18) ( Fig.5 ).
  • the flange (18) abuts against an inner wall portion (11) of the cylinder head (4) which surrounds the through hole (10) ( Figs. 8 and 13 ).
  • the bolt is not provided with a flange (18).
  • a washer (not shown) is used. The washer is placed between the head (14) and an inner wall portion (11) of the cylinder head (4), which surrounds the through hole (10).
  • the cylinder head (4) is made of aluminum.
  • both the exhaust tube (8) and the coupling (9) are made of steel. Thereby, the exhaust tube (8) and the coupling (9) can be welded to establish a gas-tight refrigerant flow path.
  • the refrigeration appliance (not shown) according to the present invention has a refrigeration circuit which includes a reciprocating hermetic compressor (1) as described in any one of the above embodiments.

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

Claims (11)

  1. Hermetischer Kolbenverdichter (1) zur Verwendung in einem Kühlgerät, insbesondere einem Haushaltskühlschrank einen Zylinderblock (2) mit einem Verdichtungsraum (3), einen Zylinderkopf (4) mit einem Ansaugraum (5) und separat davon einem Abgasraum (6), die durch eine Ventilplatte (7), die zwischen dem Zylinderblock (2) und dem Zylinderkopf (4) angeordnet ist, jeweils in Fluidverbindung mit dem Verdichtungsraum (3) stehen, und einen Abgasschalldämpfer, der separat von dem Zylinderkopf (4) bereitgestellt ist, um Druckpulsation eines Kältemittels zu dämpfen, die von dem Abgasraum (6) aufgenommen wird, gekennzeichnet durch
    - ein Metallabgasrohr (8) zum Leiten des Kältemittels in den Abgasraum (6) zum Abgasschalldämpfer
    - ein Metallkupplungsstück (9) für eine Fluidverbindung des Abgasraums (6) mit einem Metallabgasrohr (8), wobei das Kupplungsstück (9) Folgendes umfasst:
    - einen Metallkörper, der eine Durchgangsbohrung (10) durchdringt, die in einem Wandabschnitt (11) des Zylinderkopfs (4) gebildet,
    - einen hohlen Teil, der in dem Metallkörper gebildet ist und einen Kältemittelströmungsweg vom Abgasraum (6) zum Abgasrohr (8) definiert,
    - einen ersten Fixierungsteil, der einstückig mit dem Körper vorgesehen ist und den Körper schraubend am Zylinderkopf (4) sichert, und
    - einen zweiten Fixierungsteil, der einstückig mit dem Körper vorgesehen ist und eine Öffnung des Abgasrohrs (6) durch eine Schweißnaht gasdicht mit dem hohlen Teil verbindet.
  2. Hermetischer Kolbenverdichter (1) nach Anspruch 1, dadurch gekennzeichnet, dass das Kupplungsstück (9) als ein Metallbolzen gefertigt ist, wobei das Kupplungsstück (9) Folgendes umfasst:
    - eine Welle (12), die die Durchgangsbohrung (10) durchdringt, wobei die Welle (12) den Metallkörper konfiguriert,
    - eine Durchgangsbohrung (13), die entlang der Welle (12) gebildet ist, wobei die Durchgangsbohrung (13) den hohlen Teil konfiguriert,
    - einen Kopf (14), der an einem Innenwandabschnitt (11) des Zylinderkopfs (4) anliegt und die Durchgangsbohrung (10) umgibt,
    - ein erstes Gewinde (15), das an der Welle (12) gebildet ist und in Gewindeeingriff mit einem zweiten Gewinde (16) steht, das im Inneren der Durchgangsbohrung (10) des Zylinderkopfs (4) gebildet ist, wobei der Kopf (14) und das erste Gewinde (15) den ersten Fixierungsteil konfigurieren, und
    - ein Spitzenende der Welle (12), das aus der Durchgangsbohrung (10) vorspringt und das Abgasrohr (8) durch eine Schweißnaht gasdicht mit dem Spitzenende der Welle (12) verbindet, wobei das Spitzenende der Welle (12) den zweiten Fixierungsteil konfiguriert.
  3. Hermetischer Kolbenverdichter (1) nach Anspruch 2, dadurch gekennzeichnet, dass das erste Gewinde (15) an einem Abschnitt der Welle (12) knapp hinter dem Kopf (14) des Bolzens gebildet ist.
  4. Hermetischer Kolbenverdichter (1) nach Anspruch 1, dadurch gekennzeichnet, dass das Kupplungsstück (9) als ein Metallbolzen gefertigt ist, wobei das Kupplungsstück (9) Folgendes umfasst:
    - eine Welle (12), die die Durchgangsbohrung (10) durchdringt, wobei die Welle (12) den Metallkörper konfiguriert,
    - eine Durchgangsbohrung (13), die entlang der Welle (12) gebildet ist, wobei die Durchgangsbohrung (13) den hohlen Teil konfiguriert,
    - einen Kopf (14), der an einem Innenwandabschnitt (11) des Zylinderkopfs (4) anliegt und die Durchgangsbohrung (10) umgibt,
    - ein erstes Gewinde (15), das an der Welle (12) gebildet ist und mit einer Mutter (17) in Eingriff steht, die an einem Außenwandabschnitt (11) des Zylinderkopfs (4) anliegt und die Durchgangsbohrung (10) umgibt, wobei der Kopf (14), das erste Gewinde (15) und die Mutter (17) den ersten Fixierungsteil konfigurieren, und
    - ein Spitzenende der Welle (12), das aus der Durchgangsbohrung (10) vorspringt und das Abgasrohr (8) durch eine Schweißnaht gasdicht mit dem Spitzenende der Welle (12) verbindet, wobei das Spitzenende der Welle (12) den zweiten Fixierungsteil konfiguriert.
  5. Hermetischer Kolbenverdichter (1) nach Anspruch 4, dadurch gekennzeichnet, dass das erste Gewinde (15) an einem Abschnitt der Welle (12) gebildet ist, der aus der Durchgangsbohrung (10) vorspringt.
  6. Hermetischer Kolbenverdichter (1) nach einem der Ansprüche 2 bis 5, dadurch gekennzeichnet, dass der Innendurchmesser der Durchgangsbohrung (16) entlang der Welle (12) konstant ist und mit dem Innendurchmesser des Abgasrohrs (8) übereinstimmt.
  7. Hermetischer Kolbenverdichter (1) nach einem der Ansprüche 2 bis 6, dadurch gekennzeichnet, dass der Kopf (14) einen Flansch (18) aufweist, der am Innenwandabschnitt (11) des Zylinderkopfs (4) anliegt und die Durchgangsbohrung (10) umgibt.
  8. Hermetischer Kolbenverdichter (1) nach einem der Ansprüche 2 bis 6, dadurch gekennzeichnet, dass das Kupplungsstück (9) eine Distanzscheibe aufweist, die zwischen dem Kopf (14) und dem Innenwandabschnitt (11) des Zylinderkopfs (4) angeordnet ist und die Durchgangsbohrung (10) umgibt.
  9. Hermetischer Kolbenverdichter (1) nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass der Zylinderkopf (4) aus Aluminium hergestellt ist.
  10. Hermetischer Kolbenverdichter (1) nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass sowohl das Abgasrohr (8) als auch die Kupplungsstück (9) aus Stahl hergestellt sind.
  11. Kühlgerät, insbesondere ein Haushaltskühlschrank, umfassend einen Kältekreislauf zum Zirkulierenlassen eines Kältemittels, der den hermetischen Kolbenverdichter (1) nach einem der vorangehenden Ansprüche 1 bis 10 aufweist.
EP13735006.2A 2013-07-04 2013-07-04 Thermisch verbesserter hermetisch gekapselter kolbenverdichter Active EP3017194B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI201330630A SI3017194T1 (sl) 2013-07-04 2013-07-04 Toplotno izboljšan hermetični batni kompresor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2013/064205 WO2015000523A1 (en) 2013-07-04 2013-07-04 Thermally improved reciprocating hermetic compressor

Publications (2)

Publication Number Publication Date
EP3017194A1 EP3017194A1 (de) 2016-05-11
EP3017194B1 true EP3017194B1 (de) 2017-02-08

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EP (1) EP3017194B1 (de)
ES (1) ES2623063T3 (de)
SI (1) SI3017194T1 (de)
WO (1) WO2015000523A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3617515A4 (de) * 2018-06-29 2020-08-12 Anhui Meizhi Compressor Co., Ltd. Zylinderkopf eines kolbenverdichters und kolbenverdichter

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110645165B (zh) * 2019-09-23 2021-05-25 广州万宝集团压缩机有限公司 缸头组件、压缩机和制冷装置
EP4194695B1 (de) * 2021-12-07 2024-06-26 Arçelik Anonim Sirketi Hermetischer verdichter mit verbesserter schwingrohranordnung

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Publication number Priority date Publication date Assignee Title
JPS5395730A (en) * 1977-02-01 1978-08-22 Toshiba Corp Golf training machine
JPS60111074A (ja) * 1983-11-18 1985-06-17 Toshiba Corp レシプロコンプレツサ
US5205719A (en) * 1992-01-13 1993-04-27 Copeland Corporation Refrigerant compressor discharge muffler
KR20020045741A (ko) * 2000-12-11 2002-06-20 윤종용 토출머플러를 갖춘 압축기
EP2616681A1 (de) * 2010-09-14 2013-07-24 Arçelik Anonim Sirketi Verdichter mit einem körper mit reduzierter wärmeübertragung

Non-Patent Citations (1)

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Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3617515A4 (de) * 2018-06-29 2020-08-12 Anhui Meizhi Compressor Co., Ltd. Zylinderkopf eines kolbenverdichters und kolbenverdichter

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WO2015000523A1 (en) 2015-01-08
ES2623063T3 (es) 2017-07-10
EP3017194A1 (de) 2016-05-11
SI3017194T1 (sl) 2017-06-30

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