US20060120891A1 - Reciprocating compressor for compressing refrigerant - Google Patents

Reciprocating compressor for compressing refrigerant Download PDF

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Publication number
US20060120891A1
US20060120891A1 US10/539,301 US53930105A US2006120891A1 US 20060120891 A1 US20060120891 A1 US 20060120891A1 US 53930105 A US53930105 A US 53930105A US 2006120891 A1 US2006120891 A1 US 2006120891A1
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US
United States
Prior art keywords
lubricant
reciprocating compressor
refrigerant
stator
unit
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.)
Abandoned
Application number
US10/539,301
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English (en)
Inventor
Won-Hyun Jung
Su-Won Lee
Dong-Won Lee
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.)
LG Electronics Inc
Original Assignee
LG Electronics Inc
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 LG Electronics Inc filed Critical LG Electronics Inc
Assigned to LG ELECTRONICS INC. reassignment LG ELECTRONICS INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: JUNG, WON-HYUN, KWON, GI-BONG, LEE, DONG-WON, LEE, SU-WON
Publication of US20060120891A1 publication Critical patent/US20060120891A1/en
Abandoned legal-status Critical Current

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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
    • 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
    • F04B39/0215—Lubrication characterised by the use of a special lubricant
    • 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
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • F04B35/045—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric using solenoids
    • 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
    • F04B39/0276—Lubrication characterised by the compressor type the pump being of the reciprocating piston type, e.g. oscillating, free-piston compressors
    • 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
    • F04B39/0284—Constructional details, e.g. reservoirs in the casing
    • F04B39/0292—Lubrication of pistons or cylinders

Definitions

  • the present invention relates to a reciprocating compressor for compressing a refrigerant in a refrigerator, and more particularly, to a reciprocating compressor for compressing a refrigerant that is capable of improving a lubricating performance by using a lubricant with an excellent compatibility with a refrigerant used for a refrigerator and improving a performance of the refrigerator.
  • chlorofluorocarbon a refrigerant used for a refrigerator, an air-conditioner or the like, has been known as a source material damaging an ozone layer of the stratosphere, researches on a substitute refrigerant is being actively conducted.
  • the CFC comprises R11 (trichloromonogluoromethane), R12 (dichlorodifluoromethane), R13 and the like, of which R12 mainly used as a refrigerant for a refrigerator is one of regulation-subject materials as being a source material causing an ozone layer reduction and generating a global warming effect.
  • R12 mainly used as a refrigerant for a refrigerator is one of regulation-subject materials as being a source material causing an ozone layer reduction and generating a global warming effect.
  • the natural refrigerant refers to a material used as a refrigerant which naturally exists in the globe such as water, ammonia, nitride, carbon dioxide, propane, butane and the like, not an artificial compound. Known that it does not have a bad influence on the global environment, application of the natural refrigerant as a refrigerant is positively reviewed.
  • hydrocarbon comprises only carbon and hydrogen and includes R50 (methane), R170 (ethane), R290 (propane), R600 (butane), R600a (isobutene), R1270 (propylene) or the like. Hydrocarbon is not toxic and chemically stable and especially exhibits an appropriate solubility in a mineral oil.
  • the hydrocarbon has a zero ozone depletion potential and a very low global warming index. That is, when a global warming index of carbon dioxide is admitted as ‘1’, a global warming index of R12 is 7100, R134a is 1200, while propane is very low, 3.
  • isobutane (R600a) is an environmental-friendly natural gas which does not damage the ozone layer and have no influence on a greenhouse effect. That is, isobutane (R600a), a sort of a natural gas obtained by refining hydrocarbon gas created in an oil refining process to a high degree of purity, is a refrigerant containing no environmentally detrimental factor.
  • isobutene (R600a) is hardly combined with refrigerant oil currently used for a refrigerating system due to its chemical and electrical properties. Therefore, a refrigerant oil suitable for isobutene (R600a) is in need of development. Especially, necessity of a refrigerant oil usable for a reciprocating compressor for compressing isobutene (R600a) comes to the front.
  • the currently used reciprocating compressor includes: a hermetic container 6 having a suction pipe 2 for sucking a refrigerant and a discharge pipe 4 for discharging a compressed refrigerant each as being connected thereto; a driving unit 8 disposed inside the case 6 and generating a reciprocal motional force; a compression unit 10 for receiving the reciprocal motional force from the driving unit 8 and compressing the refrigerant; and a lubrication unit 12 for lubricating each motional portion of the driving unit 8 and the compression unit 10 .
  • the lubrication unit 12 supplies a lubricant 50 stored at the lower portion of the hermetic container 6 to the motional portion of the compression unit, thereby performing a lubricating operation.
  • the refrigerant compressed in the compression unit is the natural refrigerant.
  • the lubricant used for the reciprocating compressor constructed and operated as described above is used as a refrigerant oil for the compressor compressing the natural refrigerant, its physical and chemical properties should be in good harmony with the natural refrigerant.
  • the lubricant used as the refrigerant oil of the reciprocating compressor needs to have characteristics that it can protect well an oil film even though the refrigerant is dissolved, should be thermally and chemically stable so as not to react in spite of being in contact with the refrigerant and an organic material metal at a high temperature or at a low temperature, and should have a high level thermal stability so as not to generate a carbon sludge not to be oxidized at a high temperature part of the compressor.
  • characters of the lubricant such as a kinematic viscosity, a pour point, a density, a total acid number, a water content or the like, work as critical factors.
  • a reciprocating compressor for compressing a refrigerant including: a hermetic container to which a suction pipe and a discharge pipe are connected; a driving unit having a stator fixed inside the hermetic container and a mover disposed spaced apart from the stator and linearly and reciprocally moved according to an interaction with the stator; an organic compound refrigerant sucked into the suction pipe, having an combustibility and explosiveness and consisting of only carbon and hydrogen; a compression unit for receiving a reciprocal motional force of the driving unit and making a compression operation on the organic compound refrigerant; and a mineral-based lubricant filled at a lower portion of the hermetic container; and a lubrication unit for supplying the mineral-based lubricant to each motional portion of the driving unit and the compression unit and performing a lubricating operation.
  • the stator consists of an outer stator fixed at the hermetic container; an inner stator disposed with a certain air gap with an inner circumferential surface of the outer stator; and a winding coil wound at one of the outer stator and the inner stator, to which power is applied from an external source
  • the mover consists of magnets disposed at regular intervals between the outer stator and the inner stator and being linearly and reciprocally moved when power is applied to the winding coil; and a magnet frame having the magnets mounted thereon and transmitting a linear and reciprocal motional force to the compression unit.
  • the compression unit includes: a piston connected to the mover and linearly and reciprocally moved; a cylinder, into which the piston is slidably inserted, for forming a certain compression chamber; a suction valve mounted at a refrigerant passage formed at the piston and preventing a backflow of the refrigerant after being introduced into the compression chamber; and a discharge valve mounted at the front side of the cylinder and performing an opening and closing operation on the compressed refrigerant.
  • the lubrication unit includes: a lubricant pumping unit for pumping the lubricant filled as much as a certain amount at a lower portion of the hermetic container; and a lubricant supply passage for supplying the lubricant pumped by the lubricant pumping unit to a frictional portion between the piston and the cylinder.
  • the refrigerant is isobutane (R600a) which is hydrocarbon-based and has a molecular formula of CH(CH 3 ) 3 .
  • the lubricant is a paraffin-based lubricant.
  • the lubricant has a density of 0.866 ⁇ 0.880 g/cm 3 at a temperature of 15° C. and a flash point of above 140° C.
  • the lubricant has a kinematic viscosity of 7.2 ⁇ 21.8 mm 2 /s at a temperature of 40° C. and a viscosity index of 73 ⁇ 99.
  • the lubricant has a flow point of below ⁇ 25° C. and a total acid number of below 0.01 mgKOH/g.
  • the lubricant has a water content of below 20 ppm and a breakdown voltage of above 30 kV.
  • FIG. 1 is a sectional view of a general reciprocating compressor for compressing a refrigerant.
  • FIG. 1 is a sectional view of a general reciprocating compressor for compressing a refrigerant.
  • the general reciprocating compressor includes: a hermetic container 6 to which a suction pipe 2 for sucking a refrigerant and a discharge pipe 4 for discharging a compressed refrigerant are connected, a driving unit 8 disposed inside the case 6 and generating a reciprocal motional force; a compression unit 10 for receiving a reciprocal motional force generated from the driving unit 8 and performing a compressing operation on the refrigerant; and a lubrication unit 12 for performing a lubricating operation on each motional portion of the driving unit 8 and the compression unit 10 .
  • the driving unit 8 includes: a cylindrical outer stator 16 fixed by a support frame 14 fixed inside the hermetic container 6 ; an inner stator 18 disposed with a certain air gap with an inner circumferential surface of the outer stator 16 ; a winding coil 20 wound at the outer stator 16 , to which power is applied from an external source; and magnets 22 disposed at regular intervals between the outer stator 16 and the inner stator 18 and linearly and reciprocally moved when power is applied to the winding coil 20 .
  • the magnets 22 are fixed at an outer circumferential surface of the magnet holder 24 at equal intervals, and the magnet holder 24 is connected to the piston 26 of the compression unit 10 .
  • the compression unit 10 includes a piston 26 connected to the magnet holder 24 and linearly and reciprocally moved; a cylinder 28 , into which the piston 26 is slidably inserted, forming a compression chamber 36 ; a suction valve 32 mounted at a suction opening 30 formed at the piston 26 and preventing a backflow of the refrigerant after being introduced into the compression chamber 36 ; and a discharge valve 34 mounted at a front side of the cylinder 28 and performing an opening and closing operation on a compressed refrigerant.
  • the lubrication unit 12 includes: a lubricant 50 filled as much as a certain amount at a lower portion of the hermetic container; a lubricant pumping unit 40 for pumping the lubricant 50 ; and a lubricant supply passage 42 for supplying the lubricant 50 pumped by the lubricant pumping unit 40 to a frictional portion between the piston 26 and the cylinder 28 .
  • the refrigerant is supplied to the compression chamber 36 through the suction opening 30 formed at the piston 26 .
  • the lubricant 50 filled in the hermetic container 6 is pumped by the operation of the lubricant pumping unit 40 and supplied to the frictional portion between the piston 26 and the cylinder 28 through the lubricant supply passage 42 , thereby performing a lubricating operation.
  • the refrigerant compressed by the reciprocating compressor constructed and operated as described above is a natural refrigerant which is environment-friendly and has combustibility and explosiveness.
  • an organic compound refrigerant consisting of only carbon and hydrogen
  • hydrocarbon consisting of only carbon and hydrogen
  • Hydrocarbon includes R50 (methane), R170 (ethane), R290 (propane), R600 (butane), R600a (isobutene), R1270 (prophylene), etc.
  • isobutene (R600a) is hydrocarbon-based, has a molecular formula of CH (CH3)3, and is environment-friendly natural gas which does neither damage an ozone layer nor affect a greenhouse effect, and as such it is used as a refrigerant compressed by the reciprocating compressor of the present invention.
  • a mineral oil is used which has a favorable compatibility with hydrocarbon and satisfies physical and chemical characteristics.
  • the mineral oil is divided into a paraffin-based one and a naphtan-based one.
  • the paraffin-based mineral lubricant is used.
  • the paraffin-based lubricant has a density of 0.866 ⁇ 0.880 g/cm 3 at a temperature of 15° C.
  • a flash point of the paraffin-based lubricant varies depending on a size and a type of the reciprocating compressor. Preferably, it is above 140° C., and it can be below 165° C., below 175° C., below 185° C. and below 200° C. according to the type of an adopted compressor.
  • a kinematic viscosity of the paraffin-based lubricant is preferably 7.2 ⁇ 21.8 mm 2 /s at a temperature of 40° C., and most preferably, it is 8.29 mm 2 /s and 10.3 mm 2 /s depending on the size and type of an adopted reciprocating compressor.
  • a viscosity index of the paraffin-based lubricant is preferably 73 ⁇ 99.
  • a flow point of the paraffin-based lubricant is preferably below ⁇ 25° C.
  • a total acid number of the paraffin-based lubricant is below 0.01 mgKOH/g.
  • the total acid number of the lubricant representing an amount of an acid component contained in an oil, indicates an amount of potassium hydroxide required for neutralizing an acid component contained in 1 g of sample oil by the number of mg.
  • a water content of the paraffin-based lubricant is preferably below 20 ppm.
  • a breakdown voltage of the paraffin-based lubricant is preferably above 30 kV.
  • the reciprocating compressor for compressing a refrigerator of the present invention has such an advantage that since it uses the paraffin-based lubricant, a sort of the mineral oil with an excellent compatibility with the hydrocarbon, a natural refrigerant, compressed by the reciprocating compressor, the lubricating performance is improved and a life span of the reciprocating compressor is lengthened.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Lubricants (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
US10/539,301 2002-12-20 2003-07-10 Reciprocating compressor for compressing refrigerant Abandoned US20060120891A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR10-2002-0081897A KR100486597B1 (ko) 2002-12-20 2002-12-20 냉매 압축용 왕복동식 압축기
KR10-2002-0081897 2002-12-20
PCT/KR2003/001374 WO2004057187A1 (en) 2002-12-20 2003-07-10 Reciprocating compressor for compressing refrigerant

Publications (1)

Publication Number Publication Date
US20060120891A1 true US20060120891A1 (en) 2006-06-08

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ID=36165427

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/539,301 Abandoned US20060120891A1 (en) 2002-12-20 2003-07-10 Reciprocating compressor for compressing refrigerant

Country Status (8)

Country Link
US (1) US20060120891A1 (zh)
JP (1) JP2006509962A (zh)
KR (1) KR100486597B1 (zh)
CN (1) CN1714242A (zh)
AU (1) AU2003303147A1 (zh)
BR (1) BR0317618B1 (zh)
DE (1) DE10393885T5 (zh)
WO (1) WO2004057187A1 (zh)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090232666A1 (en) * 2004-08-30 2009-09-17 Lg Electronics, Inc. Linear Compressor
US20100126569A1 (en) * 2008-11-26 2010-05-27 Samsung Electronics Co., Ltd. Solar cell and method of fabricating the same
US20100320413A1 (en) * 2009-06-17 2010-12-23 Maruya Richard H Hydrocarbon refrigerant and detergent composition
US20110058964A1 (en) * 2007-10-30 2011-03-10 Yang-Jun Kang Linear motor and reciprocating compressor employing the same
WO2012082110A1 (en) * 2010-12-14 2012-06-21 A.S. Trust & Holdings, Inc. Hydrocarbon refrigerant and detergent composition
US20150226203A1 (en) * 2014-02-10 2015-08-13 General Electric Company Linear compressor

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MXPA04010342A (es) * 2004-10-20 2005-06-20 Dario Ochoa Vivanco Ruben Mejora en la mezcla de gases refrigerantes a base de hidrocarbonos para obtener mayor eficiencia en sistemas de compresion de refrigeracion y de aire acondicionado.
US9422930B2 (en) 2004-12-08 2016-08-23 Panasonic Intellectual Property Management Co., Ltd. Refrigerant compressor
ES2607379T3 (es) 2012-08-24 2017-03-31 Lg Electronics Inc. Compresor alternativo
KR101332556B1 (ko) 2012-08-24 2013-11-22 엘지전자 주식회사 왕복동식 압축기
CN104110361B (zh) * 2013-04-22 2016-06-29 青岛海尔智能技术研发有限公司 线性压缩机

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2865559A (en) * 1954-09-09 1958-12-23 Gigler Carlos Lubrication in refrigerator compressor
US3814550A (en) * 1972-12-07 1974-06-04 Gen Electric Motor arrangement and lubrication system for oscillatory compressor
US4770763A (en) * 1986-06-23 1988-09-13 Nippon Mining Co., Ltd. Process for producing lubricant base oil
US5185092A (en) * 1990-01-31 1993-02-09 Tonen Corporation Lubricating oil for refrigerator
US5342533A (en) * 1991-09-03 1994-08-30 Mitsubishi Oil Co., Ltd. Refrigerator oil composition
US5704216A (en) * 1993-02-12 1998-01-06 Sanyo Electric Co., Ltd. Refrigerating unit
US5956959A (en) * 1996-09-30 1999-09-28 Sanyo Electric Co., Ltd. Refrigerant compressor and cooling apparatus comprising the same
US5964581A (en) * 1990-11-16 1999-10-12 Hitachi, Ltd. Refrigerant compressor
US6089352A (en) * 1998-05-07 2000-07-18 Lg Electronics, Inc. Oil supply apparatus for linear compressor
US6202791B1 (en) * 1998-05-18 2001-03-20 Lg Electronics, Inc. Oil circulation structure for linear compressor and method of the same
US6409484B1 (en) * 1998-12-28 2002-06-25 Lg Electronics Inc. Oil supply unit of linear compressor
US6435842B2 (en) * 2000-05-18 2002-08-20 Lg Electronics Inc. Spring supporting structure of linear compressor
US6491506B1 (en) * 2000-05-29 2002-12-10 Lg Electronics Inc. Linear compressor
US6575716B1 (en) * 1998-12-01 2003-06-10 Matsushita Refrigeration Co. Linear compressor

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BR9606223A (pt) * 1995-12-29 1998-08-25 Lg Electronics Inc Aparelho para suprimento e descarga de óleo em um compressor
JP2000297753A (ja) * 1999-04-15 2000-10-24 Matsushita Refrig Co Ltd 密閉型圧縮機
BR0004286B1 (pt) * 2000-09-06 2008-11-18 bomba de àleo para compressor hermÉtico alternativo.

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2865559A (en) * 1954-09-09 1958-12-23 Gigler Carlos Lubrication in refrigerator compressor
US3814550A (en) * 1972-12-07 1974-06-04 Gen Electric Motor arrangement and lubrication system for oscillatory compressor
US4770763A (en) * 1986-06-23 1988-09-13 Nippon Mining Co., Ltd. Process for producing lubricant base oil
US5185092A (en) * 1990-01-31 1993-02-09 Tonen Corporation Lubricating oil for refrigerator
US5964581A (en) * 1990-11-16 1999-10-12 Hitachi, Ltd. Refrigerant compressor
US5342533A (en) * 1991-09-03 1994-08-30 Mitsubishi Oil Co., Ltd. Refrigerator oil composition
US5704216A (en) * 1993-02-12 1998-01-06 Sanyo Electric Co., Ltd. Refrigerating unit
US5956959A (en) * 1996-09-30 1999-09-28 Sanyo Electric Co., Ltd. Refrigerant compressor and cooling apparatus comprising the same
US6089352A (en) * 1998-05-07 2000-07-18 Lg Electronics, Inc. Oil supply apparatus for linear compressor
US6202791B1 (en) * 1998-05-18 2001-03-20 Lg Electronics, Inc. Oil circulation structure for linear compressor and method of the same
US6575716B1 (en) * 1998-12-01 2003-06-10 Matsushita Refrigeration Co. Linear compressor
US6409484B1 (en) * 1998-12-28 2002-06-25 Lg Electronics Inc. Oil supply unit of linear compressor
US6435842B2 (en) * 2000-05-18 2002-08-20 Lg Electronics Inc. Spring supporting structure of linear compressor
US6491506B1 (en) * 2000-05-29 2002-12-10 Lg Electronics Inc. Linear compressor

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090232666A1 (en) * 2004-08-30 2009-09-17 Lg Electronics, Inc. Linear Compressor
US20110058964A1 (en) * 2007-10-30 2011-03-10 Yang-Jun Kang Linear motor and reciprocating compressor employing the same
US8562312B2 (en) 2007-10-30 2013-10-22 Lg Electronics Inc. Linear motor and reciprocating compressor employing the same
US20100126569A1 (en) * 2008-11-26 2010-05-27 Samsung Electronics Co., Ltd. Solar cell and method of fabricating the same
US8354585B2 (en) * 2008-11-26 2013-01-15 Samsung Sdi Co., Ltd. Solar cell and method of fabricating the same
US20100320413A1 (en) * 2009-06-17 2010-12-23 Maruya Richard H Hydrocarbon refrigerant and detergent composition
US8097182B2 (en) * 2009-06-17 2012-01-17 A.S. Trust & Holdings, Inc. Hydrocarbon refrigerant and detergent composition
WO2012082110A1 (en) * 2010-12-14 2012-06-21 A.S. Trust & Holdings, Inc. Hydrocarbon refrigerant and detergent composition
US20150226203A1 (en) * 2014-02-10 2015-08-13 General Electric Company Linear compressor
US9322401B2 (en) * 2014-02-10 2016-04-26 General Electric Company Linear compressor

Also Published As

Publication number Publication date
AU2003303147A1 (en) 2004-07-14
JP2006509962A (ja) 2006-03-23
KR20040055261A (ko) 2004-06-26
BR0317618B1 (pt) 2012-08-21
WO2004057187A1 (en) 2004-07-08
BR0317618A (pt) 2005-11-29
KR100486597B1 (ko) 2005-05-03
CN1714242A (zh) 2005-12-28
DE10393885T5 (de) 2005-11-17

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Owner name: LG ELECTRONICS INC., KOREA, REPUBLIC OF

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KWON, GI-BONG;JUNG, WON-HYUN;LEE, SU-WON;AND OTHERS;REEL/FRAME:017418/0141

Effective date: 20050531

STCB Information on status: application discontinuation

Free format text: EXPRESSLY ABANDONED -- DURING EXAMINATION