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US20040037725A1 - Reciprocating compressor - Google Patents

Reciprocating compressor Download PDF

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Publication number
US20040037725A1
US20040037725A1 US10/348,978 US34897803A US2004037725A1 US 20040037725 A1 US20040037725 A1 US 20040037725A1 US 34897803 A US34897803 A US 34897803A US 2004037725 A1 US2004037725 A1 US 2004037725A1
Authority
US
United States
Prior art keywords
discharging
cylinder
discharging valve
valve
piston
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
US10/348,978
Other languages
English (en)
Inventor
Byung-Jik Kim
Hyeong-Seok Kim
Dong-Han Kim
Jin-Sung Park
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
Assigned to LG ELECTRONICS INC. reassignment LG ELECTRONICS INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KIM, BYUNG-JIK, KIM, DONG-HAN, KIM, HYEONG-SEOK, PARK, JIN-SUNG
Application filed by LG Electronics Inc filed Critical LG Electronics Inc
Publication of US20040037725A1 publication Critical patent/US20040037725A1/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
    • F04B39/10—Adaptations or arrangements of distribution members
    • F04B39/102—Adaptations or arrangements of distribution members the members being disc valves
    • 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

Definitions

  • the present invention relates to a reciprocating compressor and particularly, to a reciprocating compressor, capable of improving compression performance by improving structures of a discharging valve for adjusting discharge of gas and an end surface of the cylinder which is rubbed and contacted with the discharging valve.
  • a compressor is an instrument for compressing refrigerant gas under the condition of low temperature and pressure, which is introduced from an evaporator and discharging the gas by changing the condition to high temperature and pressure.
  • the compressor can be classified to a rotary compressor, reciprocating compressor and a scroll compressor according to the method of compressing fluid.
  • the reciprocating compressor sucks and compresses fluid while a piston moves linearly
  • such reciprocating compressor is divided into a method which compresses fluid by converting the rotary movement of a driving motor into a reciprocating movement of the piston, and a method which compresses and sucks fluid by having the piston perform a reciprocating movement as the driving motor performs a linear reciprocating movement.
  • FIG. 1 is a cross-sectional view showing a conventional reciprocating compressor
  • FIG. 2 is a partially cross-sectional view showing an operation state of a discharging valve assembly in operating suction of gas in FIG. 1
  • FIG. 3 is a partially cross-sectional view showing an operation state of a discharging valve assembly in operating discharging of gas in FIG. 1.
  • the conventional reciprocating compressor includes a case 10 having a gas suction pipe SP and gas discharging pipe DP, a frame unit 20 which is elastically installed inside the case 10 , a reciprocating motor 30 for generating a driving force while being fixed on the frame unit 20 , a compression unit 40 for sucking, compressing and discharging gas using a linear reciprocating force of the reciprocating motor 30 and a resonance spring unit 50 for inducing resonating movement by elastically supporting the compression unit 40 in the movement direction.
  • the frame unit 20 includes a front frame 21 for supporting the compression unit 40 , a middle frame 22 which is combined with the front frame 21 , for supporting the front side of the reciprocating motor 30 , and a rear frame 23 which is combined with the middle frame 22 , for supporting the rear side of the reciprocating motor 30 .
  • the reciprocating motor 30 includes an outer stator 31 which is installed between the middle frame 22 and rear frame 23 , an inner stator 32 which is combined with the outer stator 31 at a predetermined interval and is inserted and combined with the rear frame 23 , and a movable element 33 which is installed between the outer stator 31 and inner stator 32 , for performing a linear reciprocating movement.
  • the compression unit 40 includes a cylinder 41 which is integrally formed in the front frame 21 , a piston 42 which is combined with the movable element 33 of the reciprocating motor 30 , for performing a reciprocating movement in a compression space P 1 of the cylinder 41 , a suction valve 43 which is mounted at the front end of the piston 42 , for restricting suction of gas opening and closing the suction path F of the piston 42 and a discharging valve assembly 70 which is mounted at the discharging side of the cylinder 41 , for adjusting discharge of compression gas while opening and closing the compression space P 1 .
  • the discharging valve assembly 70 includes a discharging cover 71 for covering a side of the cylinder 41 , a discharging valve 72 which is inserted inside the discharging cover 71 , for opening and closing the compression space P 1 of the cylinder 41 and a valve spring 73 which is supported on the inner side of the discharging cover 71 and is combined with the discharging valve 72 , for elastically supporting the discharging valve 72 while setting the position of the discharging valve 72 .
  • the discharging valve 72 As the pressure of the gas is higher than a predetermined pressure, when it becomes higher than an elastic force of the valve spring 73 , the discharging valve 72 is moved. As the sequential process that the compression gas is discharged into the compression space P 2 is repeated, the discharged gas by opening and closing of the discharging valve 72 is discharged to the outside through a gas discharging pipe DP which is formed in the discharging cover 71 .
  • an object of the present invention is to provide a reciprocating compressor, capable of improving compression performance by improving structures of a discharging valve for adjusting discharge of gas and an end surface of the cylinder which is rubbed and contacted with the discharging valve.
  • a reciprocating compressor including a piston which performs a reciprocating movement by receiving a driving force of a reciprocating motor, a cylinder in which a piston is inserted to form compression spaces therein together with the piston, and an inclined discharging surface is formed at the end surface and a valve assembly including a discharging cover which is combined with a side of the cylinder, a discharging valve which is installed at an end of the cylinder to adjust gas discharge in the compression spaces and a valve spring for elastically supporting the discharging valve.
  • FIG. 1 is a cross-sectional view showing a conventional reciprocating compressor
  • FIG. 2 is a partially cross-sectional view showing an operation state of a discharging valve assembly in operating suction of gas in FIG. 1;
  • FIG. 3 is a partially cross-sectional view showing an operation state of a discharging valve assembly in operating discharging of gas in FIG. 1;
  • FIG. 4 is a longitudinal sectional view showing a reciprocating compressor in accordance with the present invention.
  • FIG. 5 is a partially cross-sectional view showing an operation state of a discharging valve assembly in performing gas suction in FIG. 4;
  • FIG. 6 is a partial cross-sectional view showing an operation state of a discharging valve assembly in performing gas discharging in FIG. 4.
  • FIG. 4 is a longitudinal sectional view showing a reciprocating compressor in accordance with the present invention
  • FIG. 5 is a partially cross-sectional view showing an operation state of a discharging valve assembly in performing gas suction in FIG. 4
  • FIG. 6 is a partial cross-sectional view showing the operation state of a discharging valve assembly in performing gas discharging in FIG. 4.
  • the reciprocating compressor in accordance with the present invention includes a case 10 having a gas suction pipe SP and gas discharging pipe DP, a frame unit 20 which is elastically installed inside the case 10 , a reciprocating motor 30 for generating a driving force while being fixed on the frame unit 20 , a compression unit 140 for sucking, compressing and discharging gas using a linear reciprocating force of the reciprocating motor 30 and a resonance spring unit 50 for inducing resonating movement by elastically supporting the compression unit 140 in the movement direction.
  • the compression unit 140 includes a cylinder 141 which is formed in the front frame 121 , a piston 142 which is combined with the movable element 133 of the reciprocating motor 130 , for performing a reciprocating movement in a compression space P 1 of the cylinder 141 , a suction valve 143 which is mounted at the front end of the piston 142 , for controlling suction of gas opening and closing the suction path F of the piston 142 and a discharging valve assembly 170 which is mounted at the discharging side of the cylinder 141 , for adjusting discharge of compression gas while opening and closing the compression spaces P 1 and P 2 .
  • the discharging valve assembly 170 includes a discharging cover 171 which is formed to have a predetermined space, for covering a side of the cylinder 141 again, a discharging valve 172 which is inserted inside the discharging cover 171 , for opening and closing the compression spaces P 1 and P 2 of the cylinder 141 and a valve spring 173 which is supported on the inner side of the discharging cover 171 and is combined with the discharging valve 172 , for elastically supporting the discharging valve 172 while setting the position of the discharging valve 172 .
  • an inclined discharging surface 141 B is formed on the end surface of the cylinder 141 .
  • the inclined discharging surface 141 B is formed on a cylinder discharging surface 141 A which is adjacent to the inner circumferential surface of the cylinder 141 and is contacted on the compression space P 1 .
  • the pressure supporting surface 172 A is protruded and formed at a predetermined curvature on the rear surface of the discharging valve 172 , which is abutted on the cylinder discharging space 141 A of the cylinder 141 .
  • the outer portion of the pressure supporting surface 172 A is composed to be abutted on the inclined discharging surface 141 B of the cylinder 141 .
  • the outline of the pressure supporting surface 172 A is linearly contacted with the inclined discharging surface 141 B of the cylinder 141 , and even if the discharging valve 172 is deformed by the operation for a long time, the outline of the pressure supporting surface 172 A is also linearly contacted with the inclined discharging surface 141 B of the cylinder 141 .
  • the rear surface of the discharging valve 172 is formed at a predetermined curvature so that the end surfaces of the discharging valve 172 and the cylinder 141 are not rubbed and contacted, and the inclined discharging surface 141 B is formed at an end surface of the cylinder 141 .
  • the gas which is discharged to the compression space P 2 is discharged through the gas discharging pipe DP which is connected to the discharging cover 171 .
  • the discharging valve 172 can be deformed by abrasion by friction and pressure difference of the compression spaces P 1 and P 2 .
  • the present invention can improve the compressing performance by maintaining opening and closing performance even though the discharging valve is deformed by using the valve for a long time, and the discharging valve and cylinder are linearly contacted, thus to reduce suction noise.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
US10/348,978 2002-08-21 2003-01-23 Reciprocating compressor Abandoned US20040037725A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2002-0049514A KR100486566B1 (ko) 2002-08-21 2002-08-21 왕복동식 압축기의 토출장치
KR49514/2002 2002-08-21

Publications (1)

Publication Number Publication Date
US20040037725A1 true US20040037725A1 (en) 2004-02-26

Family

ID=31492893

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/348,978 Abandoned US20040037725A1 (en) 2002-08-21 2003-01-23 Reciprocating compressor

Country Status (6)

Country Link
US (1) US20040037725A1 (ko)
JP (1) JP2004076721A (ko)
KR (1) KR100486566B1 (ko)
CN (1) CN1238636C (ko)
BR (1) BR0300261A (ko)
DE (1) DE10301779A1 (ko)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050129548A1 (en) * 2003-12-10 2005-06-16 Lg Electronics In. Suction valve and reciprocating compressor having the same
US20050191193A1 (en) * 2004-02-29 2005-09-01 Wen-San Chou Air compressor for tire inflating combination
CN105114282A (zh) * 2015-09-24 2015-12-02 张有进 空压机机芯
US11739748B2 (en) * 2019-05-14 2023-08-29 Halliburton Energy Services, Inc. Pump fluid end with easy access suction valve

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100455799C (zh) * 2004-11-05 2009-01-28 乐金电子(天津)电器有限公司 密封式压缩机的阀门盘
KR101442548B1 (ko) * 2008-08-05 2014-09-22 엘지전자 주식회사 스크롤 압축기
KR101809347B1 (ko) 2016-01-19 2017-12-14 엘지전자 주식회사 리니어 압축기

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US797739A (en) * 1904-07-29 1905-08-22 Wilhelm Meer Valve.
US1951215A (en) * 1932-01-21 1934-03-13 Bryce Ltd Fuel pump
US4212316A (en) * 1978-03-13 1980-07-15 Acf Industries, Incorporated Control valve
US4872481A (en) * 1985-03-12 1989-10-10 Cooper Industries, Inc. Poppet valve flow seat
US6135144A (en) * 1999-11-23 2000-10-24 Thomas Industries, Inc. Pressure relief valve assembly
US20020023449A1 (en) * 2000-01-12 2002-02-28 Park Kyeong Bae Valve fastening structure of reciprocating compressor
US6666663B2 (en) * 2001-10-15 2003-12-23 Lg Electronics Inc. Gas suction apparatus for a reciprocating compressor with a piston inertia valve

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6258074A (ja) * 1985-09-06 1987-03-13 Hitachi Ltd スクロ−ル流体機械
KR100480093B1 (ko) * 1998-12-11 2005-06-08 엘지전자 주식회사 리니어 압축기의 과열 방지구조
KR100323526B1 (ko) * 2000-03-03 2002-02-19 구자홍 압축기의 토출 장치

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US797739A (en) * 1904-07-29 1905-08-22 Wilhelm Meer Valve.
US1951215A (en) * 1932-01-21 1934-03-13 Bryce Ltd Fuel pump
US4212316A (en) * 1978-03-13 1980-07-15 Acf Industries, Incorporated Control valve
US4872481A (en) * 1985-03-12 1989-10-10 Cooper Industries, Inc. Poppet valve flow seat
US6135144A (en) * 1999-11-23 2000-10-24 Thomas Industries, Inc. Pressure relief valve assembly
US20020023449A1 (en) * 2000-01-12 2002-02-28 Park Kyeong Bae Valve fastening structure of reciprocating compressor
US6585500B2 (en) * 2000-12-01 2003-07-01 Lg Electronics Inc. Valve fastening structure of a reciprocating compressor utilizing permanent magnets
US6666663B2 (en) * 2001-10-15 2003-12-23 Lg Electronics Inc. Gas suction apparatus for a reciprocating compressor with a piston inertia valve

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050129548A1 (en) * 2003-12-10 2005-06-16 Lg Electronics In. Suction valve and reciprocating compressor having the same
US20050191193A1 (en) * 2004-02-29 2005-09-01 Wen-San Chou Air compressor for tire inflating combination
CN105114282A (zh) * 2015-09-24 2015-12-02 张有进 空压机机芯
US11739748B2 (en) * 2019-05-14 2023-08-29 Halliburton Energy Services, Inc. Pump fluid end with easy access suction valve

Also Published As

Publication number Publication date
JP2004076721A (ja) 2004-03-11
KR20040017446A (ko) 2004-02-27
KR100486566B1 (ko) 2005-05-03
DE10301779A1 (de) 2004-03-04
BR0300261A (pt) 2004-08-03
CN1477309A (zh) 2004-02-25
CN1238636C (zh) 2006-01-25

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Legal Events

Date Code Title Description
AS Assignment

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

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KIM, BYUNG-JIK;KIM, HYEONG-SEOK;KIM, DONG-HAN;AND OTHERS;REEL/FRAME:013697/0215

Effective date: 20030108

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION