EP2616681A1 - A compressor comprising a body with reduced heat transmission - Google Patents

A compressor comprising a body with reduced heat transmission

Info

Publication number
EP2616681A1
EP2616681A1 EP11752569.1A EP11752569A EP2616681A1 EP 2616681 A1 EP2616681 A1 EP 2616681A1 EP 11752569 A EP11752569 A EP 11752569A EP 2616681 A1 EP2616681 A1 EP 2616681A1
Authority
EP
European Patent Office
Prior art keywords
compressor
framework
refrigerant
cylinder
crankshaft
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.)
Withdrawn
Application number
EP11752569.1A
Other languages
German (de)
French (fr)
Inventor
Ahmet Refik Ozdemir
Ersin Donmez
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 EP2616681A1 publication Critical patent/EP2616681A1/en
Withdrawn legal-status Critical Current

Links

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
    • 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
    • F04B39/0027—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
    • F04B39/12—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
    • 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
    • F04B39/14—Provisions for readily assembling or disassembling
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • 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
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/22—Arrangements for enabling ready assembly or disassembly

Definitions

  • the present invention relates to a compressor comprising a body, which is used in cooling devices.
  • the hermetic compressors used in domestic type refrigerators comprise a body that bears and supports the movable components like the piston, crankshaft etc.
  • the refrigerant sucked into the compressor reaches the cylinder by passing through the muffler and the suction chamber of the cylinder head.
  • the refrigerant with increased pressure and temperature is discharged into the exhaust chamber of the cylinder head after leaving the cylinder.
  • the heat transmission between the body and the refrigerant during circulation of the refrigerant inside the compressor causes the temperature of the refrigerant to rise.
  • the rising of the refrigerant temperature causes an increase in the specific volume of the refrigerant and hence the compression of a lesser amount of refrigerant in the same displacement volume particularly in the cylinder. Accordingly, the compressor efficiency and performance are negatively affected.
  • the suction mufflers are predominantly produced from plastic materials and the materials with both high heat and oil resistance and also with low thermal conductivity, for example 30% glass fiber reinforced PBT material, are used.
  • the aim of the present invention is the realization of a compressor the performance of which is improved by preventing the losses resulting from the undesired heat transmission between the body and the refrigerant.
  • the compressor realized in order to attain the aim of the present invention and explicated in the attached claims comprises a body produced from plastic material and a framework produced from high resistant, for example, metal material that bears the movable components like the crankshaft, piston etc. embedded into the body and holds the compressor components together. Since the body is produced from plastic material, the heat exchange between the body and the refrigerant is at low level. However, the body is not damaged easily especially during assembly by means of the framework produced from metal material being embedded therein.
  • the cylinder, exhaust mufflers and the main block holding the cylinder and exhaust mufflers together are disposed on the framework.
  • the cylinder, exhaust mufflers and the main block produced from metal material are embedded into the body produced from plastic material. Accordingly, heat exchange of the refrigerant with these components during compression in the cylinder and passage through the exhaust mufflers is minimized, thus decrease in efficiency due to this heat exchange is avoided.
  • the exhaust discharge line is also disposed on the framework.
  • the exhaust discharge line produced from metal material is also embedded into the body that is produced from plastic material. Accordingly, heat exchange is similarly minimized during flow of the refrigerant from the cylinder to the exhaust mufflers.
  • crankshaft bearing is also on the framework and embedded into the body.
  • heat transmission to the refrigerant by means of the crankshaft bearing and the crankshaft is prevented.
  • the body is clad on the framework preferably by plastic injection method.
  • cut-outs are formed at suitable places on the framework in order to lower the weight of the framework, provide cost advantage and to minimize heat transmission capacity.
  • compressor efficiency is provided to be improved by minimizing heat transmission.
  • Figure 1 – is the schematic view of a compressor.
  • Figure 2 – is the perspective view of a framework.
  • Figure 3 – is the perspective view of a framework and a sheath.
  • the compressor (1) of the present invention comprises a body (2) produced from plastic material and at least one movable component (7, 9) that moves with respect to the body (2).
  • the compressor (1) furthermore comprises a framework (3) produced from metal material, embedded into at least some portion of the body (2) walls, bearing at least one movable component (7, 9).
  • the compressor (1) comprises an outer casing (M) wherein the body (2) and the other components are disposed.
  • the compressor (1) of the present invention comprises a piston (7) that provides sucking and pumping of the circulating fluid by reciprocating.
  • the framework (3) furthermore comprises a cylinder (4) wherein the piston (7) reciprocates. Accordingly, heat transmission to the refrigerant through the cylinder (4) is prevented particularly during compression.
  • the compressor (1) of the present invention comprises a crankshaft (9) that provides the movement of the piston (7).
  • the framework (3) furthermore comprises a crankshaft bearing (10) that bears the crankshaft (9). Consequently, ease of both production and assembly is provided by forming a monoblock framework (3) that provides all the movable components to be borne and supported.
  • the framework (3) comprises at least one exhaust muffler (5).
  • the refrigerant coming into the compressor (1) from the suction line is prevented from being heated and compressor (1) efficiency is affected positively.
  • the framework (3) comprises a main block (6) which embodies the cylinder (4) and the exhaust mufflers (5) thereon.
  • the framework (3) furthermore comprises the exhaust discharge line (8) that is used in the delivery of refrigerant to the exhaust muffler (5). Consequently, heat transmission to the refrigerant is decreased during discharge of the refrigerant and the compressor (1) efficiency is increased.
  • the body (2) is clad on the framework (3) by plastic injection method.
  • the framework (3) furthermore comprises at least one cut-out (11).
  • both the weight and the cost of the framework (3) are decreased.
  • the compressor (1) efficiency is provided to be improved by decreasing undesired heat transmissions.

Landscapes

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

Abstract

The present invention relates to a compressor (1) comprising a body (2) produced from plastic material and at least one movable component (7, 9) that moves with respect to the body (2). In the compressor (1) of the present invention, the compressor (1) efficiency is provided to be improved by decreasing undesired heat transmissions.

Description

    A COMPRESSOR COMPRISING A BODY WITH REDUCED HEAT TRANSMISSION
  • The present invention relates to a compressor comprising a body, which is used in cooling devices.
  • The hermetic compressors used in domestic type refrigerators comprise a body that bears and supports the movable components like the piston, crankshaft etc. The refrigerant sucked into the compressor reaches the cylinder by passing through the muffler and the suction chamber of the cylinder head. At the end of the compression process, the refrigerant with increased pressure and temperature is discharged into the exhaust chamber of the cylinder head after leaving the cylinder. The heat transmission between the body and the refrigerant during circulation of the refrigerant inside the compressor causes the temperature of the refrigerant to rise. The rising of the refrigerant temperature causes an increase in the specific volume of the refrigerant and hence the compression of a lesser amount of refrigerant in the same displacement volume particularly in the cylinder. Accordingly, the compressor efficiency and performance are negatively affected.
  • In the prevalent embodiments, in order to avoid these problems, the suction mufflers are predominantly produced from plastic materials and the materials with both high heat and oil resistance and also with low thermal conductivity, for example 30% glass fiber reinforced PBT material, are used.
  • In the state of the art International Patent No WO2009071384, a reciprocating piston compressor design is explained, having crankshaft-piston rod system that is positioned on an air compressor portably. In this embodiment, the cylinder head and the piston are produced from glass fiber reinforced plastic material.
  • The aim of the present invention is the realization of a compressor the performance of which is improved by preventing the losses resulting from the undesired heat transmission between the body and the refrigerant.
  • The compressor realized in order to attain the aim of the present invention and explicated in the attached claims, comprises a body produced from plastic material and a framework produced from high resistant, for example, metal material that bears the movable components like the crankshaft, piston etc. embedded into the body and holds the compressor components together. Since the body is produced from plastic material, the heat exchange between the body and the refrigerant is at low level. However, the body is not damaged easily especially during assembly by means of the framework produced from metal material being embedded therein.
  • In different embodiments of the present invention, the cylinder, exhaust mufflers and the main block holding the cylinder and exhaust mufflers together are disposed on the framework. In other words, the cylinder, exhaust mufflers and the main block produced from metal material are embedded into the body produced from plastic material. Accordingly, heat exchange of the refrigerant with these components during compression in the cylinder and passage through the exhaust mufflers is minimized, thus decrease in efficiency due to this heat exchange is avoided.
  • In an embodiment of the present invention, the exhaust discharge line is also disposed on the framework. In other words, the exhaust discharge line produced from metal material is also embedded into the body that is produced from plastic material. Accordingly, heat exchange is similarly minimized during flow of the refrigerant from the cylinder to the exhaust mufflers.
  • Similarly, in an embodiment of the present invention, the crankshaft bearing is also on the framework and embedded into the body. Thus, heat transmission to the refrigerant by means of the crankshaft bearing and the crankshaft is prevented.
  • The body is clad on the framework preferably by plastic injection method.
  • In different embodiments of the present invention, cut-outs are formed at suitable places on the framework in order to lower the weight of the framework, provide cost advantage and to minimize heat transmission capacity.
  • In the compressor of the present invention, compressor efficiency is provided to be improved by minimizing heat transmission.
  • The compressor realized in order to attain the aim of the present invention is illustrated in the attached figures, where:
  • Figure 1 – is the schematic view of a compressor.
  • Figure 2 – is the perspective view of a framework.
  • Figure 3 – is the perspective view of a framework and a sheath.
  • The elements illustrated in the figures are numbered as follows:
    1. Compressor
    2. Body
    3. Framework
    4. Cylinder
    5. Exhaust muffler
    6. Main block
    7. Piston
    8. Exhaust discharge line
    9. Crankshaft
    10. Crankshaft bearing
    11. Cut-out
  • The compressor (1) of the present invention comprises a body (2) produced from plastic material and at least one movable component (7, 9) that moves with respect to the body (2). The compressor (1) furthermore comprises a framework (3) produced from metal material, embedded into at least some portion of the body (2) walls, bearing at least one movable component (7, 9). Thus, while heat transmission from the compressor (1) components to the refrigerant is minimized, the overall strength is not sacrificed by means of the framework (3) produced from high strength material. The compressor (1) comprises an outer casing (M) wherein the body (2) and the other components are disposed.
  • The compressor (1) of the present invention comprises a piston (7) that provides sucking and pumping of the circulating fluid by reciprocating. The framework (3) furthermore comprises a cylinder (4) wherein the piston (7) reciprocates. Accordingly, heat transmission to the refrigerant through the cylinder (4) is prevented particularly during compression.
  • The compressor (1) of the present invention comprises a crankshaft (9) that provides the movement of the piston (7). The framework (3) furthermore comprises a crankshaft bearing (10) that bears the crankshaft (9). Consequently, ease of both production and assembly is provided by forming a monoblock framework (3) that provides all the movable components to be borne and supported.
  • In an embodiment of the present invention, the framework (3) comprises at least one exhaust muffler (5). Thus, the refrigerant coming into the compressor (1) from the suction line is prevented from being heated and compressor (1) efficiency is affected positively.
  • In an embodiment of the present invention, the framework (3) comprises a main block (6) which embodies the cylinder (4) and the exhaust mufflers (5) thereon. Thus, the adversities that may occur due to deformations during assembly are minimized.
  • In an embodiment of the present invention, the framework (3) furthermore comprises the exhaust discharge line (8) that is used in the delivery of refrigerant to the exhaust muffler (5). Consequently, heat transmission to the refrigerant is decreased during discharge of the refrigerant and the compressor (1) efficiency is increased.
  • In the preferred embodiment of the present invention, the body (2) is clad on the framework (3) by plastic injection method.
  • In an embodiment of the present invention, the framework (3) furthermore comprises at least one cut-out (11). Thus, both the weight and the cost of the framework (3) are decreased.
  • In the compressor (1) of the present invention, the compressor (1) efficiency is provided to be improved by decreasing undesired heat transmissions.

Claims (8)

  1. A compressor (1) that comprises a body (2) manufactured of plastic material and at least one movable component (7, 9) that moves with respect to the body (2), characterized by a framework (3) produced from metal material, embedded into at least some portion of the body (2) walls and bearing at least one movable component (7, 9).
  2. A compressor (1) as in Claim 1, characterized by the framework (3) comprising a piston (7) that provides the sucking and pumping of the circulating fluid by reciprocating and a cylinder (4) wherein the piston (7) reciprocates.
  3. A compressor (1) as in Claim 1 or 2, characterized by the framework (3) having a crankshaft (9) that provides movement of the piston (7) and a crankshaft bearing (10) that bears the crankshaft (9).
  4. A compressor (1) as in any one of the above Claims, characterized by the framework (3) comprising at least one exhaust muffler (5).
  5. A compressor (1) as in any one of the above Claims, characterized by the framework (3) comprising a main block (6) that embodies the cylinder (4) and the exhaust mufflers (5) thereon.
  6. A compressor (1) as in any one of the above Claims, characterized by the framework (3) comprising the exhaust discharge line (8) that is used in the delivery of the refrigerant to the exhaust muffler (5).
  7. A compressor (1) as in any one of the above Claims, characterized by the body (2) that is clad on the framework (3) by plastic injection method.
  8. A compressor (1) as in any one of the above Claims, characterized by the framework (3) comprising at least one cut-out (11).
EP11752569.1A 2010-09-14 2011-09-09 A compressor comprising a body with reduced heat transmission Withdrawn EP2616681A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TR201007527 2010-09-14
PCT/EP2011/065648 WO2012034944A1 (en) 2010-09-14 2011-09-09 A compressor comprising a body with reduced heat transmission

Publications (1)

Publication Number Publication Date
EP2616681A1 true EP2616681A1 (en) 2013-07-24

Family

ID=44583077

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11752569.1A Withdrawn EP2616681A1 (en) 2010-09-14 2011-09-09 A compressor comprising a body with reduced heat transmission

Country Status (2)

Country Link
EP (1) EP2616681A1 (en)
WO (1) WO2012034944A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015000523A1 (en) * 2013-07-04 2015-01-08 Arcelik Anonim Sirketi Thermally improved reciprocating hermetic compressor
KR102150445B1 (en) 2018-10-22 2020-09-01 엘지전자 주식회사 Compressor including cylinder block corresponding to outer rotor type motor

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3746476A (en) * 1971-04-01 1973-07-17 Applied Power Ind Inc Hydraulic pump
US4304533A (en) * 1978-05-26 1981-12-08 Bucknell Engineering Ltd. Body having fluid passages
US5895207A (en) * 1993-06-17 1999-04-20 Itt Automotive Europe, Gmbh Electric motor-pump assembly
US6558137B2 (en) * 2000-12-01 2003-05-06 Tecumseh Products Company Reciprocating piston compressor having improved noise attenuation
DE202007017137U1 (en) 2007-12-06 2008-02-28 Continental Aktiengesellschaft compressor unit

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2012034944A1 *

Also Published As

Publication number Publication date
WO2012034944A1 (en) 2012-03-22

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