EP1718869B1 - A refrigerant compressor - Google Patents

A refrigerant compressor Download PDF

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Publication number
EP1718869B1
EP1718869B1 EP04806631A EP04806631A EP1718869B1 EP 1718869 B1 EP1718869 B1 EP 1718869B1 EP 04806631 A EP04806631 A EP 04806631A EP 04806631 A EP04806631 A EP 04806631A EP 1718869 B1 EP1718869 B1 EP 1718869B1
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EP
European Patent Office
Prior art keywords
refrigerant
muffler
head
cylinder
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.)
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Application number
EP04806631A
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German (de)
French (fr)
Other versions
EP1718869A1 (en
Inventor
Sitki Arcelik Anonim Sirketi BICER
Serkan Arcelik Anonim Sirketi KARA
Tolga Arcelik Anonim Sirketi YAROGLU
Sarper Arcelik Anonim Sirketi MARASLI
Erhan Arcelik Anonim Sirketi KASAPOGLU
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
Application filed by Arcelik AS filed Critical Arcelik AS
Publication of EP1718869A1 publication Critical patent/EP1718869A1/en
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Publication of EP1718869B1 publication Critical patent/EP1718869B1/en
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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

Definitions

  • This invention relates to a compressor preferably used in refrigerators, wherein a muffler minimizes the noise generated by the refrigerant during the refrigeration cycle and a cylinder head is used to attach the muffler to the cylinder.
  • cooling is achieved by circulating a refrigerant in a cycle that generally consists of a condenser, which transfers the heat out, a pressure reducer used to regulate the pressure, an evaporator absorbing the heat and a compressor.
  • a compressor used in the afore-mentioned cycle, suction mufflers are utilized whereby the refrigerant used to achieve the cooling, reaches the cylinder block without being heated, and the noise that might be generated by the refrigerant is prevented.
  • the suction muffler is generally manufactured from plastic material and located either on the cylinder head or between the cylinder head and the valve plate.
  • the refrigerant sucked reaches a cylinder block by passing through a muffler wherein its portion forming the suction manifold is placed inside the cylinder head. While attempting to minimize the noise generated during this period, it is necessary to improve thermodynamic efficiency. However, heat transfer occurs at the section where the cylinder head and the muffler head are connected, such that the refrigerant, and as a consequence thermodynamic cycle is affected.
  • the cylinder head is manufactured in single piece and a portion of it is in full contact with the surfaces of the muffler that form the suction manifold.
  • the refrigerant reaches the cylinder by passing the muffler wherein its portion forming the suction manifold is located in the cylinder head.
  • the temperature of the refrigerant taken into the cylinder rises because of the temperature gradient formed at the cylinder head as a result of discharge of the gas priorly to the exhaust manifold of cylinder head after leaving the cylinder, wherein both the pressure and temperature of the gas are increased by the compression process in the cylinder.
  • the rise in the temperature of the refrigerant causes its volume to increase thereby resulting in compression of less amount of gas in a standard stroke volume and, decrease of volumetric efficiency of the compressor.
  • the aim of the present invention is the realization of a compressor with increased volumetric efficiency, wherein means are provided to transfer the refrigerant to the cylinder without being heated at the section where the cylinder head and the muffler head are connected.
  • the circulation of the refrigerant used to realize the cooling is achieved by means of a hermetic piston compressor (1).
  • the compressor (1) comprises a cylinder (2) which provides the pumping of the refrigerant in it, a cylinder head (3), located on the cylinder (2), through which the refrigerant that is sucked and discharged, is circulated, a valve plate (5) between the cylinder (2) and cylinder head (3), on which the cylinder head (3) is placed, a suction muffler (4) with insulating properties, placed onto the cylinder head (3), and preferably made of plastic material, wherein acoustical energy of the refrigerant circulated inside, is reduced thereby minimizing the noise generated during the circulation and, which ensures that the refrigerant reaches the cylinder head (3) without being heated, and one or more insulators (10) which provide a reduction in the heat transfer between the cylinder head (3) and the muffler head (8) and prevents the temperature of the refrigerant from increasing by minimizing the contact with hot surfaces.
  • the cylinder head (3) comprises a muffler head housing (7), which provides it to be placed onto the suction muffler (4) and, an exhaust volume (9) wherein the refrigerant discharged from the cylinder (2) is circulated.
  • the suction muffler (4) comprises a muffler head (8) fitting to the muffler head housing (8) whereby it is attached to the cylinder head (3) and, an outlet opening (6) on the muffler head (8) permitting the refrigerant to pass to the cylinder (2) therethrough.
  • an insulator (10) located on the muffler head (8) is utilized.
  • an insulator (10) located inside the muffler head (8) is utilized ( Fig. 4a ).
  • an insulator (10) located on the surfaces of muffler head housing (7) is utilized.
  • an insulator (10) located inside the wall between the surfaces of muffler head housing (7) and the exhaust volume (9) is utilized ( Fig. 4c ).
  • an insulator (10) located on the surfaces of exhaust volume (9) is utilized ( Fig. 4b ).
  • an insulator (10) located around the outlet opening (6) is utilized.
  • the insulator (10) is in the form of an insulating wall whereby the contact between the refrigerant coming from the suction muffler (4) and the hot internal surfaces is minimized while the refrigerant passes through the cylinder head (3) and, the inlet temperature of the refrigerant is prevented from increasing.
  • the insulator (10) is in the form of an insulating chamber whereby the contact between the refrigerant coming from the suction muffler (4) and the hot internal surfaces is minimized while the refrigerant passes through the cylinder head (3) and, the inlet temperature of the refrigerant is prevented from increasing.
  • the insulator (10) according to the present invention can be attached or detached to/from its position on the muffler head (8) or the suction muffler (4) as a separate module or, it can be fixed to these parts and, apart from these it can be manufactured integrally with the suction muffler (4) and/or the muffler head (8) at a suitable position.
  • the air between the suction muffler (4) and the muffler head (8) is used as an insulator (10) and functions like an insulating wall or insulating chamber.
  • the contact surface of the muffler head housing (7) and the muffler head (8) is decreased thereby ensuring the intake of the refrigerant to the cylinder at a low temperature and thus at higher density and, increasing the performance of the compressor (1).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

This invention relates to a compressor (1) preferably used in refrigerators, wherein an insulator (10) minimizes the heat transfer between a suction muffler (4) minimizing the noise generated by the refrigerant during the refrigeration cycle and a cylinder head (3) used to attach the suction muffler (4) to the cylinder (2).

Description

  • This invention relates to a compressor preferably used in refrigerators, wherein a muffler minimizes the noise generated by the refrigerant during the refrigeration cycle and a cylinder head is used to attach the muffler to the cylinder.
  • In refrigerators, cooling is achieved by circulating a refrigerant in a cycle that generally consists of a condenser, which transfers the heat out, a pressure reducer used to regulate the pressure, an evaporator absorbing the heat and a compressor. In the compressors used in the afore-mentioned cycle, suction mufflers are utilized whereby the refrigerant used to achieve the cooling, reaches the cylinder block without being heated, and the noise that might be generated by the refrigerant is prevented. The suction muffler is generally manufactured from plastic material and located either on the cylinder head or between the cylinder head and the valve plate. The refrigerant sucked, reaches a cylinder block by passing through a muffler wherein its portion forming the suction manifold is placed inside the cylinder head. While attempting to minimize the noise generated during this period, it is necessary to improve thermodynamic efficiency. However, heat transfer occurs at the section where the cylinder head and the muffler head are connected, such that the refrigerant, and as a consequence thermodynamic cycle is affected.
  • In these applications, the cylinder head is manufactured in single piece and a portion of it is in full contact with the surfaces of the muffler that form the suction manifold. In this case, the refrigerant reaches the cylinder by passing the muffler wherein its portion forming the suction manifold is located in the cylinder head. The temperature of the refrigerant taken into the cylinder rises because of the temperature gradient formed at the cylinder head as a result of discharge of the gas priorly to the exhaust manifold of cylinder head after leaving the cylinder, wherein both the pressure and temperature of the gas are increased by the compression process in the cylinder. The rise in the temperature of the refrigerant causes its volume to increase thereby resulting in compression of less amount of gas in a standard stroke volume and, decrease of volumetric efficiency of the compressor.
  • In the current state of the art, in the European Patent Application EP195486 , an application for decreasing heat transfer between the cylinder head and the muffler is defined.
  • In the current state of the art, in the United States Patent US4573881 , a description is given of an additional cylindrical part made of insulating material, which is placed in order to decrease the heat transfer.
  • Compressors having technical features as defined in the preamble of patent claim 1 are known from documents EP 1 347 175 A ; US Patent 6,305,912 ; US Patent 4,759,693 or US Patent 5,762,478 .
  • The aim of the present invention is the realization of a compressor with increased volumetric efficiency, wherein means are provided to transfer the refrigerant to the cylinder without being heated at the section where the cylinder head and the muffler head are connected.
  • The compressor designed to fulfill the objectives of the present invention is illustrated on the attached figures where:
    • Fig.1 - is a cross-sectional view of a compressor.
    • Fig.2 - is a perspective view of a cylinder head and a suction muffler.
    • Fig.3 - is an exploded view of a cylinder head, a valve plate and a suction muffler.
    • Fig.4a - is a schematic representation of a cylinder head wherein a suction muffler is mounted onto it and which comprises an insulator inside the muffler head.
    • Fig.4b - is a schematic representation of a cylinder head wherein a suction muffler is mounted onto it and which comprises an insulator inside the exhaust volume.
    • Fig.4c - is a schematic representation of a cylinder head wherein a suction muffler is mounted onto it and which comprises an insulator between the muffler head and the exhaust volume.
  • Elements shown on figures are numbered as follows:
    1. 1- Compressor
    2. 2- Cylinder
    3. 3- Cylinder head
    4. 4- Suction muffler
    5. 5- Valve plate
    6. 6- Outlet opening
    7. 7- Muffler head housing
    8. 8- Muffler head
    9. 9- Exhaust volume
    10. 10- Insulator
  • In home appliances, preferably in cooling devices, the circulation of the refrigerant used to realize the cooling, is achieved by means of a hermetic piston compressor (1).
  • The compressor (1) comprises a cylinder (2) which provides the pumping of the refrigerant in it, a cylinder head (3), located on the cylinder (2), through which the refrigerant that is sucked and discharged, is circulated, a valve plate (5) between the cylinder (2) and cylinder head (3), on which the cylinder head (3) is placed, a suction muffler (4) with insulating properties, placed onto the cylinder head (3), and preferably made of plastic material, wherein acoustical energy of the refrigerant circulated inside, is reduced thereby minimizing the noise generated during the circulation and, which ensures that the refrigerant reaches the cylinder head (3) without being heated, and one or more insulators (10) which provide a reduction in the heat transfer between the cylinder head (3) and the muffler head (8) and prevents the temperature of the refrigerant from increasing by minimizing the contact with hot surfaces.
  • The cylinder head (3) comprises a muffler head housing (7), which provides it to be placed onto the suction muffler (4) and, an exhaust volume (9) wherein the refrigerant discharged from the cylinder (2) is circulated.
  • The suction muffler (4) comprises a muffler head (8) fitting to the muffler head housing (8) whereby it is attached to the cylinder head (3) and, an outlet opening (6) on the muffler head (8) permitting the refrigerant to pass to the cylinder (2) therethrough.
  • In one application of the present invention, an insulator (10) located on the muffler head (8) is utilized.
  • In another application of the present invention, an insulator (10) located inside the muffler head (8) is utilized (Fig. 4a).
  • In another application of the present invention, an insulator (10) located on the surfaces of muffler head housing (7) is utilized.
  • In another application of the present invention, an insulator (10) located inside the wall between the surfaces of muffler head housing (7) and the exhaust volume (9) is utilized (Fig. 4c).
  • In another application of the present invention, an insulator (10) located on the surfaces of exhaust volume (9) is utilized (Fig. 4b).
  • In another application of the present invention, an insulator (10) located around the outlet opening (6) is utilized.
  • In one application of the present invention, the insulator (10) is in the form of an insulating wall whereby the contact between the refrigerant coming from the suction muffler (4) and the hot internal surfaces is minimized while the refrigerant passes through the cylinder head (3) and, the inlet temperature of the refrigerant is prevented from increasing.
  • In one application of the present invention, the insulator (10) is in the form of an insulating chamber whereby the contact between the refrigerant coming from the suction muffler (4) and the hot internal surfaces is minimized while the refrigerant passes through the cylinder head (3) and, the inlet temperature of the refrigerant is prevented from increasing.
  • The insulator (10) according to the present invention can be attached or detached to/from its position on the muffler head (8) or the suction muffler (4) as a separate module or, it can be fixed to these parts and, apart from these it can be manufactured integrally with the suction muffler (4) and/or the muffler head (8) at a suitable position.
  • In another application of the present invention, the air between the suction muffler (4) and the muffler head (8) is used as an insulator (10) and functions like an insulating wall or insulating chamber.
  • By means of the application in accordance with the present invention, the contact surface of the muffler head housing (7) and the muffler head (8) is decreased thereby ensuring the intake of the refrigerant to the cylinder at a low temperature and thus at higher density and, increasing the performance of the compressor (1).

Claims (4)

  1. A compressor (1) having; a cylinder (2) which provides the pumping of the refrigerant in it; a cylinder head (3) located above the cylinder (2), through which the refrigerant that is sucked and discharged, is circulated, and which comprises an exhaust volume (9) wherein the refrigerant discharged from the cylinder (2) is circulated and, a muffler head housing (7) which provides it to be placed onto the suction muffler (4); a suction muffler (4) wherein acoustical energy of the refrigerant circulated inside of it, is reduced thereby minimizing the noise generated during the circulation and, which comprises a muffler head (8) fitting to the muffler head housing (8); and having one or more insulators (10) which provides a reduction in the heat transfer between the cylinder head (3) and the muffler head (8) and prevents the temperature of the refrigerant from increasing by minimizing the contact with hot surfaces, characterized in that said insulators (10) being located
    • either inside the muffler head (8) and/or
    • on the surfaces of the exhaust volume (9) and/or
    • inside the wall between the surfaces of muffler head housing (7) and the exhaust volume (9).
  2. A compressor (1) as described in Claim 1, characterized by a suction muffler (4) which comprises an outlet opening (6) on the muffler head (8) permitting the refrigerant to pass to the cylinder (2) therethrough.
  3. A compressor (1) as described in Claims 1 or 2, characterized by an insulator (10) in the form of an insulating wall whereby the contact between the refrigerant coming from the suction muffler (4) and the hot internal surfaces is minimized while the refrigerant passes through the cylinder head (3) and, the inlet temperature of the refrigerant is prevented from increasing.
  4. A compressor (1) as described in any of the above Claims, characterized by an insulator (10) in the form of an insulating chamber whereby the contact between the refrigerant coming from the suction muffler (4) and the hot internal surfaces is minimized while the refrigerant passes through the cylinder head (3) and the increase of the inlet temperature of the refrigerant is prevented.
EP04806631A 2003-12-29 2004-12-28 A refrigerant compressor Active EP1718869B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR200302305 2003-12-29
PCT/IB2004/052928 WO2005066495A1 (en) 2003-12-29 2004-12-28 A refrigerant compressor

Publications (2)

Publication Number Publication Date
EP1718869A1 EP1718869A1 (en) 2006-11-08
EP1718869B1 true EP1718869B1 (en) 2008-10-22

Family

ID=34748322

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04806631A Active EP1718869B1 (en) 2003-12-29 2004-12-28 A refrigerant compressor

Country Status (7)

Country Link
EP (1) EP1718869B1 (en)
AT (1) ATE412118T1 (en)
DE (1) DE602004017363D1 (en)
DK (1) DK1718869T3 (en)
ES (1) ES2313120T3 (en)
TR (1) TR200603300T1 (en)
WO (1) WO2005066495A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104121163A (en) * 2013-04-24 2014-10-29 Lg电子株式会社 Muffler for compressor and compressor having the same

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108457839A (en) * 2018-05-30 2018-08-28 江苏白雪电器股份有限公司 Compressor and its air suction silencer

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1140305B (en) * 1957-11-20 1962-11-29 Enfo Grundlagen Forschungs Ag Piston machine for gaseous media
DE3622996A1 (en) * 1986-07-09 1988-02-18 Danfoss As SUCTION MUFFLER
KR0143142B1 (en) * 1995-03-07 1998-08-01 김광호 Cylinder apparatus for on reciprocating canpressor
DE19915918C2 (en) * 1999-04-09 2001-05-31 Danfoss Compressors Gmbh Refrigerant compressor and method for its assembly
JP3776025B2 (en) * 2000-11-29 2006-05-17 松下冷機株式会社 Hermetic compressor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104121163A (en) * 2013-04-24 2014-10-29 Lg电子株式会社 Muffler for compressor and compressor having the same
CN104121163B (en) * 2013-04-24 2018-01-05 Lg电子株式会社 Compressor muffler and the compressor with the compressor muffler

Also Published As

Publication number Publication date
ATE412118T1 (en) 2008-11-15
ES2313120T3 (en) 2009-03-01
DK1718869T3 (en) 2009-02-23
WO2005066495A1 (en) 2005-07-21
TR200603300T1 (en) 2006-10-26
DE602004017363D1 (en) 2008-12-04
EP1718869A1 (en) 2006-11-08

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