US20040179965A1 - Valve coupling structure of reciprocating compressor and coupling method thereof - Google Patents

Valve coupling structure of reciprocating compressor and coupling method thereof Download PDF

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Publication number
US20040179965A1
US20040179965A1 US10/475,602 US47560203A US2004179965A1 US 20040179965 A1 US20040179965 A1 US 20040179965A1 US 47560203 A US47560203 A US 47560203A US 2004179965 A1 US2004179965 A1 US 2004179965A1
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US
United States
Prior art keywords
piston
valve
end surface
contacted
suction valve
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
US10/475,602
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English (en)
Inventor
Hyung-Pyo Yoon
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., A CORP. OF KOREA reassignment LG ELECTRONICS INC., A CORP. OF KOREA ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: YOON, HYUNG-PYO
Publication of US20040179965A1 publication Critical patent/US20040179965A1/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
    • 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
    • F04B39/10—Adaptations or arrangements of distribution members
    • 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
    • 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
    • F04B39/0005—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 adaptations of pistons
    • 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
    • F04B39/0005—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 adaptations of pistons
    • F04B39/0016—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 adaptations of pistons with valve arranged in the piston
    • 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • 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
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/12—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members
    • 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
    • F04B2207/00—External parameters
    • F04B2207/04—Settings
    • F04B2207/046—Settings of length of piston stroke
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2230/00—Manufacture
    • F05B2230/20—Manufacture essentially without removing material
    • F05B2230/23—Manufacture essentially without removing material by permanently joining parts together
    • F05B2230/232—Manufacture essentially without removing material by permanently joining parts together by welding
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2280/00—Materials; Properties thereof
    • F05B2280/10—Inorganic materials, e.g. metals

Definitions

  • the present invention relates to a reciprocating compressor and particularly, to a valve coupling structure of a reciprocating compressor and a coupling method thereof, capable of preventing deformation and damage of a suction valve which continuously opens/closes a gas flow path and minimizing a dead volume of a compression space.
  • a compressor is an instrument for compressing fluid such as air and refrigerant gas.
  • the compressor generally includes a motor unit installed in a closing case, for generating a driving force and a compressing unit for sucking and compressing refrigerant gas by receiving the driving force of the above motor unit and is classified into a rotary compressor, reciprocating compressor and a scroll compressor according to the structure of the compressing unit.
  • the reciprocating compressor among them is a compressor in which a driving force of the motor unit is transmitted to the piston and the piston sucks, compresses and discharges refrigerant gas performing linear reciprocating movement in a cylinder.
  • FIGS. 1 and 2 show an embodiment of the compressing unit of the reciprocating compressor and the compressing unit of the reciprocating compressor includes a cylinder 10 where a through hole 11 forming a compression space P inside the hole is formed, a piston inserted in the through hole 11 of the cylinder 10 enabling linear reciprocating movement and a discharge valve assembly 30 combined to the end portion of the cylinder 10 to cover the through hole 11 .
  • the piston 20 has a head portion 22 at one side of the body portion 21 having a certain length and a connection portion 23 lengthened into a certain area at the other side of the body portion 21 .
  • a first gas passage 24 having a certain depth is formed at the other side of the body portion 21 and in the body and head portions 21 and 22 , a gas flow path F is formed so that refrigerant can flow.
  • a suction valve 40 for opening and closing the second gas passage 25 is positioned in the head portion 22 and the connection portion 23 of the piston is 20 is connected into the motor unit (not shown) for generating a driving force.
  • the suction valve 40 is composed of a thin plate in a round form and has a cutting hole 41 is positioned inside a circular sheet.
  • the circular sheet is divided into a fixing portion 42 and opening and closing portion 43 by the cutting hole 41 by the cuffing hole.
  • the suction valve 40 is fixed-combined to the head portion 22 of the piston 20 having a fixing bolt 50 penetrated by the fixing portion 42 of the suction valve 40 under the condition that the suction valve 40 is contacted on the end surface of the head portion 22 of the piston 20 .
  • the discharge valve assembly 30 includes a discharge cover 31 combined to cover the end portion of the cylinder 10 , a discharge valve 32 inserted in the discharge cover 30 , for opening and closing the compression space P formed by the through hole 11 and piston 20 of the cylinder 10 and a valve spring 33 for elastically supporting the discharge valve 32 .
  • a driving force of the motor unit is transmitted to the piston 20 and the piston 20 performs a linear reciprocating movement in the cylinder 10 .
  • a dead volume is generated since the head portion of the fixing bolt 50 is positioned in a shape that it is protruded into the compression space P, thus to decline compressing efficiency. Also, position sensing of the upper dead center (b) and lower dead center a of the piston 20 is difficult by the protruded head portion of the fixing bolt 50 and accordingly, controlling of a stroke of reciprocating movement of the piston 20 became difficult.
  • an object of the present invention is to provide a valve coupling structure of a reciprocating compressor and a coupling method thereof, capable of preventing deformation and damage of a suction valve which continuously opens/closes a gas flow path and minimizing a dead volume of a compression space.
  • a valve coupling structure of a reciprocating compressor including a piston which performs a linear reciprocating movement inside a cylinder with having a gas flow path in which gas flows, a valve which is positioned to be contacted on an end surface of the piston to open and close the gas flow path of the piston, and a diffusion bonding portion which is diffused and combined to a part of an end surface of the piston and the contact surface of the valve which is contacted on an end surface of the piston by movement of atoms or movement among atoms, which form the valve by using an energy source of the outside.
  • a valve coupling method of a reciprocating compressor comprising the steps of processing a contact surface of an end surface of a piston and a valve which is contacted with the end surface of the piston, contacting the contact surface of the valve on the end surface of the piston, performing first pressurization so that the surface of the piston and surface of the valve are permanently deformed in a pressurization part of the contact surface of the end surface of the piston and the valve by pressurizing a part of the contact surface of the end surface of the piston and the valve which is contacted on the end surface of the piston, performing second pressurization so that the atoms of the above materials are moved and coupled as the surface of the piston and the surfaces of the valve are permanently deformed and removing a pressure added to the piston and valve.
  • FIG. 1 is a cross-sectional view showing a compression unit of a conventional reciprocating compressor
  • FIG. 2 is a exploded perspective view showing an embodiment of a suction valve coupling structure of the conventional reciprocating compressor
  • FIG. 3 is a cross-sectional view showing the operational state of the compression unit of the conventional reciprocating compressor
  • FIG. 4 is a cross-sectional view showing a compression unit of a reciprocating compressor having a suction valve coupling structure of a reciprocating compressor of the present invention
  • FIG. 5 is a cross-sectional view showing another embodiment of the reciprocating compressor in accordance with the present invention.
  • FIG. 6 is a flow chart showing a suction valve coupling method of the reciprocating compressor in accordance with the present invention.
  • FIG. 7 is an enlarged view illustrating a changing process of the internal structure of a contact surface on which the suction valve and the piston head are contacted by the suction valve coupling structure of the reciprocating compressor in-accordance with the present invention and the method thereof;
  • FIG. 8 is a cross-sectional view showing an operation state of the suction valve coupling structure of the reciprocating compressor in accordance with the present invention.
  • valve coupling structure of the reciprocating compressor and the coupling method thereof in accordance with the present invention will be described with reference to the embodiment shown in the accompanied drawings.
  • FIG. 4 is a cross-sectional view showing a compression unit of the reciprocating compressor having a suction valve coupling structure of the reciprocating compressor of the present invention.
  • the compression unit of the reciprocating compressor includes a cylinder 10 where a through hole 11 forming a compression space P therein is formed, a piston 20 which is inserted in the through hole 11 of the cylinder 10 so that it can perform a linear movement, a discharge valve assembly 30 combined to the end portion of the cylinder 10 to cover the through hole 1 1 and a suction valve 40 which is combined to an end surface of the piston 20 by the movement of atoms, for opening and closing the gas flow path F which is penetrated and formed inside the piston 20 .
  • the piston 20 includes a head portion 22 at a side of a body portion 21 having a certain length, a connection portion 23 lengthened at the other side of the body portion 21 having a certain area and a gas flowing passage F penetrated to flow refrigerant gas in the body portion 21 and head portion 22 .
  • the connection portion 23 of the piston 20 is connected to a motor unit (not shown) for generating a driving force.
  • a suction valve 40 is combined with the head portion 22 of the piston 20 by the diffusion bonding method for coupling the suction valve 40 for opening is and closing the gas flow path F by movement of atoms.
  • the diffusion bonding method means a method for coupling two pressurized and attached under a predetermined temperature condition without melting two parts moving atoms by natural and compulsory diffusion (solid state diffusion) among metal atoms.
  • a predetermined temperature condition is made using a predetermined outer energy source.
  • the temperature is set as a low temperature lower than about 450° C.
  • a cutting groove 41 (shown in FIG. 2) 41 is positioned inside a circular sheet and the circular sheet is divided into a fixing portion 42 by the cutting groove 41 .
  • a diffusion boding portion D which is diffused and bonded so that there is no heat-affected portion by movement of atoms which compose the fixing portion 42 of the suction valve 40 and end surface of the piston head portion 22 is formed under the condition that the end surfaces of the head portions of the fixing portion 42 and piston 20 .
  • the diffusion bonding portion D corresponds to some regions of the fixing portion 42 of the suction valve 40 and an end surface of the piston head portion 22 which is contacted with the region.
  • an insertion groove 24 having a predetermined area and depth is formed of an end surface of the head portion is 22 of the piston which is contacted with the suction valve 40 and an insertion material 60 which is formed according to the shape of the insertion groove 24 is inserted, fixed and attached into the insertion groove 24 .
  • a diffusion boding portion D which is diffused and attached so that there is no heat-affected part caused by movement of atoms composing the suction valve 40 and atoms composing the insertion material 60 .
  • the diffusion bonding portion D corresponds to some regions of the fixing portion 42 of the suction valve 40 and some regions of the insertion material which are contacted with the region.
  • the insertion material 60 is made of a material having good adhesiveness and it is desirable that the insertion material is made of a material having a similar atomic structure as the suction valve 40 and the insertion material 60 is inserted in the insertion groove 24 of the piston 20 and is fixed and combined by brazing welding.
  • the discharge valve assembly 30 includes a discharge cover 31 which is coupled to cover the through hole 11 of the cylinder 10 , a discharge valve 32 which is inserted in the discharge cover 31 , for opening and closing the compression space P which is formed by the through hole 11 of the cylinder 10 and the piston 20 , and a valve spring 33 for elastically supporting the discharge valve 32 .
  • the coupling method includes the steps of processing the end surface of the piston in which the suction valve 40 is positioned, that is, of the piston head portion 22 , processing the contact surface of the suction valve 40 which is contacted on the end surface of the piston head portion 22 , and contacting the contact surface of the suction valve 40 on the end surface of the piston 20 .
  • the method includes the steps of performing first pressurization so that the surface of the piston 20 and surface of the valve 40 are permanently deformed in a pressurization part of the end surface of the piston 20 and the valve 40 by pressurizing a part of the valve 40 which is contacted on the end surface of the piston 20 , and performing second pressurization so that the atoms of the above materials are moved and coupled as the surface of the piston 20 and the surfaces of the valve 40 are permanently deformed in a pressurization part of the end surface of the piston 20 and the valve 40 by pressurizing a part of the valve 40 .
  • the suction valve 40 couples with the insertion material 60 which is inserted and coupled with the piston 20 .
  • the suction valve 40 is fixed and combined to the piston 20 by coupling caused by movement of atoms, and accordingly, the surface which is positioned in the compression space P is formed as a flat plate. Therefore, dead volume generated by the head portion of the fixing bolt 50 can be removed in combining with the fixing bolt 50 as conventionally, thus to increase the volume of the compression space P and easily control stroke of the piston 20 as position sending of the stroke of the piston 20 is eased.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Compressor (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
US10/475,602 2001-11-05 2002-10-25 Valve coupling structure of reciprocating compressor and coupling method thereof Abandoned US20040179965A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR1020010068614A KR20030037757A (ko) 2001-11-05 2001-11-05 왕복동식 압축기의 밸브 결합구조 및 그 결합방법
KR2001/68614 2001-11-05
PCT/KR2002/001996 WO2003040564A1 (en) 2001-11-05 2002-10-25 Valve coupling structure of reciprocating compressor and coupling method thereof

Publications (1)

Publication Number Publication Date
US20040179965A1 true US20040179965A1 (en) 2004-09-16

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Application Number Title Priority Date Filing Date
US10/475,602 Abandoned US20040179965A1 (en) 2001-11-05 2002-10-25 Valve coupling structure of reciprocating compressor and coupling method thereof

Country Status (5)

Country Link
US (1) US20040179965A1 (zh)
KR (1) KR20030037757A (zh)
CN (1) CN100491728C (zh)
BR (1) BR0206247B1 (zh)
WO (1) WO2003040564A1 (zh)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070151247A1 (en) * 2006-01-04 2007-07-05 Kippes Juan G Steam engine with convection boiler
CN107676250A (zh) * 2017-10-29 2018-02-09 南京润泽流体控制设备有限公司 往复式注射泵
US20220341408A1 (en) * 2021-04-21 2022-10-27 Wen-San Chou Piston of Cylinder of Air Compressor

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101045190B1 (ko) * 2008-10-20 2011-06-30 조규오 이동식 분진제거 안전 판재 재단장치
KR101298264B1 (ko) * 2011-03-21 2013-08-21 동해금속 주식회사 전기자동차 브레이크 배력장치에 사용되는 피스톤형 진공펌프

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3800675A (en) * 1972-04-17 1974-04-02 Gen Motors Corp Unitary piston-suction valve assembly
US3814550A (en) * 1972-12-07 1974-06-04 Gen Electric Motor arrangement and lubrication system for oscillatory compressor
US5993178A (en) * 1996-05-06 1999-11-30 Lg Electronics, Inc. Linear compressor
US6413057B1 (en) * 1999-08-19 2002-07-02 Lg Electonics Plurality of outer resonance springs for a linear compressor

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5759078A (en) * 1980-09-26 1982-04-09 Hitachi Ltd Piston for reciprocating type compressor
JPS59110439A (ja) * 1982-12-14 1984-06-26 Toshiba Corp 回転圧縮機の主ベアリング製造方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3800675A (en) * 1972-04-17 1974-04-02 Gen Motors Corp Unitary piston-suction valve assembly
US3814550A (en) * 1972-12-07 1974-06-04 Gen Electric Motor arrangement and lubrication system for oscillatory compressor
US5993178A (en) * 1996-05-06 1999-11-30 Lg Electronics, Inc. Linear compressor
US6413057B1 (en) * 1999-08-19 2002-07-02 Lg Electonics Plurality of outer resonance springs for a linear compressor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070151247A1 (en) * 2006-01-04 2007-07-05 Kippes Juan G Steam engine with convection boiler
CN107676250A (zh) * 2017-10-29 2018-02-09 南京润泽流体控制设备有限公司 往复式注射泵
US20220341408A1 (en) * 2021-04-21 2022-10-27 Wen-San Chou Piston of Cylinder of Air Compressor
US11815080B2 (en) * 2021-04-21 2023-11-14 Wen-San Chou Piston of cylinder of air compressor

Also Published As

Publication number Publication date
CN100491728C (zh) 2009-05-27
BR0206247B1 (pt) 2011-11-29
WO2003040564A1 (en) 2003-05-15
BR0206247A (pt) 2004-01-13
CN1491322A (zh) 2004-04-21
KR20030037757A (ko) 2003-05-16

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AS Assignment

Owner name: LG ELECTRONICS INC., A CORP. OF KOREA, KOREA, REPU

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:YOON, HYUNG-PYO;REEL/FRAME:015069/0995

Effective date: 20030605

STCB Information on status: application discontinuation

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