WO2020015901A1 - Culasse d'un compresseur hermétique à mouvement de va-et-vient - Google Patents

Culasse d'un compresseur hermétique à mouvement de va-et-vient Download PDF

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Publication number
WO2020015901A1
WO2020015901A1 PCT/EP2019/063786 EP2019063786W WO2020015901A1 WO 2020015901 A1 WO2020015901 A1 WO 2020015901A1 EP 2019063786 W EP2019063786 W EP 2019063786W WO 2020015901 A1 WO2020015901 A1 WO 2020015901A1
Authority
WO
WIPO (PCT)
Prior art keywords
cylinder head
exhaust
plenum
exhaust plenum
suction
Prior art date
Application number
PCT/EP2019/063786
Other languages
English (en)
Inventor
Ahmet Refik Ozdemir
Hasim OTUNC
Bilgin Hacioglu
Original Assignee
Arcelik Anonim Sirketi
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 Anonim Sirketi filed Critical Arcelik Anonim Sirketi
Publication of WO2020015901A1 publication Critical patent/WO2020015901A1/fr

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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
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/125—Cylinder heads
    • 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
    • F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
    • F04B27/04—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B27/0404—Details, component parts specially adapted for such pumps
    • F04B27/0423—Cylinders
    • 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
    • F04B39/06—Cooling; Heating; Prevention of freezing

Definitions

  • the present invention relates to a cylinder head enabling heat insulation particularly in hermetic reciprocating compressors.
  • a rotor is enabled to rotate by the magnetic field effect occurring between the stator and the rotor.
  • the refrigerant coming from an evaporator during cooling cycle enters the compressor by means of a suction tube provided on the housing.
  • a suction muffler is used in a suction line to mitigate the noise generated due to pressure fluctuations.
  • the refrigerant After passing through the suction muffler, the refrigerant passes through a suction valve opening and closing due to pressure difference between a suction plenum and a cylinder volume, and enters the cylinder volume.
  • the refrigerant then passes through an exhaust muffler and a vibration eliminator enabling damping the vibrations and noise generated during exhaust stage.
  • the exhaust plenum region is also in thermal connection with the body. Heat is transferred to the valve plate and body region due to high temperatures reached after compression. This causes to increase the temperature of the low temperature refrigerant sucked when the piston advances from the upper dead center to the lower dead center. In turn, this reduces the amount of fluid sucked in the cylinder in unit of time, and causes the volumetric efficiency and cooling capacity of the compressor to decrease.
  • WO2007068072 discloses a hermetic compressor in which heat transfer with a valve plate is decreased by disposing an exhaust plenum in a single enclosed volume.
  • the aim of the present invention is to realize a cylinder head enabling reducing heat transfer from exhaust plenum to other components particularly in hermetic reciprocating compressors.
  • the cylinder head enabling reducing heat transfer from exhaust plenum to other components particularly in hermetic reciprocating compressors, comprises in its most basic form,
  • the cylinder head enabling reducing heat transfer from exhaust plenum to other components particularly in hermetic reciprocating compressors, comprises at least one body and at least one suction plenum provided on the body.
  • the refrigerant which is to enter a suction valve passes through the suction plenum.
  • the fluid discharged from an exhaust valve enters the exhaust plenum provided on the body.
  • At least one insulation surface restricting heat transfer with the valve plate is provided on the portion of the body facing the valve plate. Since the insulation surface covers the region where the exhaust plenum is disposed, at least one exhaust plenum opening is provided on the insulation surface to enable the refrigerant leaving the exhaust valve to pass to the exhaust plenum.
  • the refrigerant leaving the exhaust valve reaches the exhaust plenum by passing through said exhaust plenum opening.
  • the body of the cylinder head of the invention is shaped roughly as a box with one side open. The open portion of this box is at least partially covered by the insulation surface. Said enclosed volume of the cylinder head enables reducing heat transfer from the exhaust plenum to the valve plate, refrigerant and the suction plenum.
  • the body and the insulation plate are made of plastic. Since thermal conduction of plastic is lower with respect to metal, the cylinder head of the invention provides a better thermal insulation compared to state of the art cylinder heads.
  • the cylinder head of the invention enables thermally insulating exhaust gasses from the suction plenum and the valve plate. Therefore, the refrigerant passing through the suction plenum does not heat by the effect of exhaust gasses, which in turn increases the volumetric efficiencies of the compressors utilizing the cylinder head of the invention.

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

Abstract

La présente invention concerne une culasse permettant de réduire le transfert de chaleur du plénum d'échappement à d'autres composants, en particulier dans des compresseurs hermétiques à mouvement de va-et-vient, caractérisée par au moins une surface d'isolation permettant de réduire l'échange de chaleur avec une plaque de soupape, et par au moins une ouverture de chambre d'échappement formée sur la surface d'isolation, pour évacuer les gaz d'échappement du plénum d'échappement.
PCT/EP2019/063786 2018-07-19 2019-05-28 Culasse d'un compresseur hermétique à mouvement de va-et-vient WO2020015901A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR201810356 2018-07-19
TRA2018/10356 2018-07-19

Publications (1)

Publication Number Publication Date
WO2020015901A1 true WO2020015901A1 (fr) 2020-01-23

Family

ID=66776308

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2019/063786 WO2020015901A1 (fr) 2018-07-19 2019-05-28 Culasse d'un compresseur hermétique à mouvement de va-et-vient

Country Status (1)

Country Link
WO (1) WO2020015901A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0597872B1 (fr) * 1991-07-04 1996-04-10 EMBRACO EUROPE S.r.l. Compresseur hermetique a moteur pour circuits de refrigeration
US5916349A (en) * 1997-11-20 1999-06-29 Czabala; Michael P. Piston assembly and method for reducing the temperature of a compressor cup seal
US6457947B1 (en) * 1997-08-29 2002-10-01 Luk Fahrzeug-Hydraulik Gmbh & Co. Kg Piston compressor for refrigerant, with thermal insulation
US20050106034A1 (en) * 2003-11-17 2005-05-19 Fuminobu Enokijima Heat insulating structure of compressor
WO2007068072A1 (fr) 2005-12-16 2007-06-21 Whirlpool S.A. Compresseur hermetique avec isolation thermique interne
DE102009003998A1 (de) * 2008-01-09 2009-07-23 Kabushiki Kaisha Toyota Jidoshokki, Kariya Verdichter
WO2012166051A1 (fr) 2011-06-01 2012-12-06 Panasonic Corporation Plaque de clapet pour compresseur

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0597872B1 (fr) * 1991-07-04 1996-04-10 EMBRACO EUROPE S.r.l. Compresseur hermetique a moteur pour circuits de refrigeration
US6457947B1 (en) * 1997-08-29 2002-10-01 Luk Fahrzeug-Hydraulik Gmbh & Co. Kg Piston compressor for refrigerant, with thermal insulation
US5916349A (en) * 1997-11-20 1999-06-29 Czabala; Michael P. Piston assembly and method for reducing the temperature of a compressor cup seal
US20050106034A1 (en) * 2003-11-17 2005-05-19 Fuminobu Enokijima Heat insulating structure of compressor
WO2007068072A1 (fr) 2005-12-16 2007-06-21 Whirlpool S.A. Compresseur hermetique avec isolation thermique interne
DE102009003998A1 (de) * 2008-01-09 2009-07-23 Kabushiki Kaisha Toyota Jidoshokki, Kariya Verdichter
WO2012166051A1 (fr) 2011-06-01 2012-12-06 Panasonic Corporation Plaque de clapet pour compresseur

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