CN100449144C - Valve assembly of reciprocating compressor - Google Patents

Valve assembly of reciprocating compressor Download PDF

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Publication number
CN100449144C
CN100449144C CNB038015854A CN03801585A CN100449144C CN 100449144 C CN100449144 C CN 100449144C CN B038015854 A CNB038015854 A CN B038015854A CN 03801585 A CN03801585 A CN 03801585A CN 100449144 C CN100449144 C CN 100449144C
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CN
China
Prior art keywords
valve
piston
suction
valve assembly
fluid
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.)
Expired - Fee Related
Application number
CNB038015854A
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Chinese (zh)
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CN1592819A (en
Inventor
李东远
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LG Electronics Inc
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LG Electronics Inc
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Publication date
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Publication of CN1592819A publication Critical patent/CN1592819A/en
Application granted granted Critical
Publication of CN100449144C publication Critical patent/CN100449144C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • 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
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K15/00—Check valves
    • F16K15/14—Check valves with flexible valve members
    • F16K15/148—Check valves with flexible valve members the closure elements being fixed in their centre
    • 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

Abstract

In a valve assembly of a reciprocating compressor including a piston having a valve seat portion (26) at the front and plural suction (24) holes for sucking a fluid at regular intervals in the circumferential direction; and a suction valve (20) arranged on the valve seat portion (26) to perform opening/closing operation of the suction holes (24), wherein the suction valve (20) includes a fixed portion fixed to the valve seat portion (26) of the piston; an open/close portion formed at the outside of the fixed portion to perform opening/closing operation of the suction holes (24); and plural neck (32) portions formed between the fixed portion (28) and the open/close portion (30) at regular intervals. Accordingly, by minimizing fatigue occurrence according to continued opening/closing operation by reducing an opening angle of the valve, damage or breakage of the valve can be minimized.

Description

The valve assembly of reciprocal compressor
Technical field
The present invention relates to a kind of valve assembly, relate in particular to a kind of valve assembly of reciprocal compressor, it can prevent that valve from damaging because of compression pressure, and improves productive rate.
Background technique
Usually, use various compressors according to compression method, hermetic compressor is mainly used in the little lightweight air-conditioning of volume.According to the fluid compression method, hermetic compressor can be divided into rotary compressor, reciprocal compressor and screw compressor or the like.
In reciprocal compressor, be subjected to the effect of the driving force that driver element produces and in cylinder, carry out linear reciprocating compressed fluid simultaneously at the piston of compression unit.
The valve assembly of reciprocal compressor is installed in the compression chamber of compressed fluid wherein and wherein sucks between the suction passage of fluid.When sucking fluid, valve assembly is opened because of the pressure of fluid, and fluid is provided in the compression chamber by suction passage.And when compressed fluid, valve assembly prevents that the fluid that compresses from refluxing in compression chamber.
Fig. 1 is the partial section of valve assembly that shows the reciprocal compressor of conventional art, and Fig. 2 is the perspective exploded view that shows the valve assembly of this conventional art.
The compression unit of the reciprocal compressor of conventional art comprises: cylinder 104, and it is fixed on the housing (not shown) and comprises compression chamber 102; Piston 106, it is inserted in the cylinder 104 to carry out linear reciprocating motion and compressed fluid; Suction valve 108, it is installed in piston 106 front portions to carry out switching manipulation, so that control flow into the fluid in the compression chamber 102; And discharge valve assembly 110, it is used for when fluid is compressed into a certain degree that exceeds in the compression chamber 102 fluid being disposed to the outside from compression chamber 102.
In piston 106, be formed for sucking the suction passage 112 of fluid in the central, be formed for the fluid in the suction suction passage 112 is offered the inlet hole 114 of compression chamber 102 in its front portion.Form in the front portion of piston 106 on it and suction valve 108 contacted valve seat part 116.
Suction valve 108 forms the thin plate-like with certain elastic force, and is fixed to bolt 118 on the valve seat part 116 of piston 106.
In more detail, as shown in Figure 2, suction valve 108 comprises: a standing part 120, and it is formed on the center of this suction valve, so that be fixed on bolt 118 on the valve seat part 116 of piston 106; And an ON/OFF part 124, it is formed on a surface of standing part 120, and is used for opening/closing inlet hole 114.Herein, standing part 120 and ON/OFF part 124 form by machining away part suction valve 108, and are connected to each other by the neck 122 with certain elastic force.
Discharge valve assembly 110 comprises: a valve pocket 132, and it is installed in the front portion of cylinder 104, and has the discharge orifice 130 that is used for exhaust fluid; An expulsion valve 134, it closely contacts with the anterior of cylinder 104, to carry out opening; And a spring 136, it places between the inwall of expulsion valve 134 and valve pocket 132, provides certain elastic force to give expulsion valve 134.
The operation of the reciprocal compressor of conventional art is below described.When piston 106 retreats with when compression chamber 102 provides fluid, because suction pressure is separated the ON/OFF part 124 of suction valve 108 with the valve seat part 116 of piston 106, therefore inlet hole 114 is opened, and the fluid that is drawn in the suction passage 112 offers compression chamber 102 by inlet hole 114.
In this state, when piston 106 advanced with compressed fluid, suction valve 108 closely contacted with the valve seat part 116 of piston 106 by the elastic force of himself and cuts out inlet hole 114.When piston 106 was advanced further, expulsion valve 134 separated with cylinder 104 because of the pressure in the compression chamber 102, and the fluid of compression is discharged into the outside by discharge orifice 130 in compression chamber 102.
But in the suction valve of the reciprocal compressor of prior art, when fluid offered compression chamber 102 by means of suction pressure, the ON/OFF part 124 of valve seat 108 was separated mutually with the valve seat part 116 of piston 106.Herein, because ON/OFF part 124 is carried out the opening of inlet hole 114 by curved neck 122, the stress of concentrating is on neck 122, so neck 122 may damage because of the fatigue of continuous opening or too much opening operation.
In addition, owing to ON/OFF part 124 must be arranged to face the inlet hole 114 of piston 106, therefore in the assembling process of suction valve 108, must adjust the position of ON/OFF part 124 exactly.In addition, standing part 120 must be fixed firmly on the piston 106, changes with the position that prevents ON/OFF part 124 in the opening of suction valve 108, therefore makes assembly operation complicated.
Summary of the invention
In order to address the above problem, an object of the present invention is to provide a kind of valve assembly of reciprocal compressor, the fatigue that it can cause continuous opening by the opening angle that reduces valve is reduced to minimum degree, thereby prevents that valve from damaging or break.
Another object of the present invention provides a kind of valve assembly of reciprocal compressor, and it comes assembled valve and can improve productive rate by need not to consider the position of valve.
To achieve these goals, the valve assembly of reciprocal compressor of the present invention comprises: a piston, and it has a plurality of inlet holes that are used to suck fluid that are in anterior valve seat part and are the interval of rule at circumferencial direction; And a suction valve, it is arranged on the valve seat part, and to carry out the opening of inlet hole, wherein suction valve comprises: a standing part, it is fixed on the valve seat part of piston; An ON/OFF part, it is formed on the standing part outside, to carry out the opening of inlet hole; And a plurality of necks, its interval with rule is formed between standing part and the ON/OFF part.
Be fixed on the center of the valve seat part of piston as the standing part of the core of suction valve.
Neck is formed on by machining away between the formed blank parts of some parts between standing part and the ON/OFF part by the interval of rule.
Neck radially is formed on by machining away between the more formed blank parts of some local parts between standing part and the ON/OFF part.
The guide groove that fluid by inlet hole is discharged thereon is formed on the circumference of ON/OFF part with the interval of rule.
Description of drawings
Accompanying drawing is used to and the invention provides further understanding, and the part of book as an illustration, and it has shown embodiments of the invention, is used from together with following explanation one and explains principle of the present invention.
Fig. 1 is the partial section of suction valve that shows the compressor of conventional art;
Fig. 2 is the perspective exploded view that shows the suction valve of conventional art;
Fig. 3 is the sectional view that shows the compressor that adopts suction valve assembly of the present invention;
Fig. 4 is the perspective exploded view that shows suction valve assembly of the present invention;
Fig. 5 is the front view that shows suction valve assembly of the present invention;
Fig. 6 is the sectional view that shows the serviceability of suction valve of the present invention;
Fig. 7 is the front view that shows the suction valve assembly of second embodiment of the invention;
Fig. 8 is the front view that shows the suction valve assembly of third embodiment of the invention.
Embodiment
Below, the preferred embodiment of the suction valve assembly of compressor of the present invention is described with reference to the drawings.
A plurality of embodiments are arranged, below describe preferred embodiment.
Fig. 3 is the perspective view that shows the suction valve assembly of reciprocal compressor of the present invention.
Reciprocal compressor of the present invention comprises: a housing 6, and it has certain enclosed space, and is connected to the discharge pipe 4 that is used to suck the suction pipe 2 of fluid and is used to discharge compressed fluid respectively; A driver element 8, it is arranged in the housing 6, to produce to-and-fro motion power when connecting power supply; And a compression unit 10, it is used for carrying out squeeze operation by the to-and-fro motion power of accepting to produce in the driver element 8.
Compression unit 10 comprises: a piston 12, and it is connected to driver element 8, to carry out linear reciprocating motion; A cylinder 14, it is used to hold the piston 12 that can slide therein, and forms compression chamber 16; A suction valve 20, it is installed in the front portion of piston 12, with the opening of the fluid passage 18 of carrying out piston 12; And a discharge valve assembly 22, it is installed in the front portion of cylinder 14, to carry out the opening of exhaust fluid.
Figure 4 and 5 are perspective exploded view and front views of suction valve assembly of the present invention.
Piston 12 is cylindrical bodys, it is connected to driver element 8, to carry out linear motion so that sealed by the inner periphery of cylinder 14, the suction passage 18 that is used to suck fluid alongst is formed on the inner periphery of piston 12, form a plurality of inlet holes 24 in the front portion of piston 12, the fluid that is used for being inhaled in the suction passage 18 offers compression chamber 16.Form flat valve seat in the front portion of piston 12, so that it is closely contacted with the suction valve 20 that carries out opening, driver element 8 is connected to the rear portion of piston 12.
Form inlet hole 24 according to the interval of rule along the peripheral direction of piston 12 herein.In more detail, can freely form inlet hole 24, as long as they as an embodiment, are preferably formed 8 inlet holes along the evenly formation of peripheral direction of piston 12.
Suction valve 20 forms thin planar, and is fixed on the valve seat part 26 of piston 12, and with opening/closing inlet hole 24, it forms by having certain flexible material.
In suction valve 20, be formed centrally standing part 28 therein, so that be fixed on the valve seat part 26 of piston 12, and in the standing part 28 peripheral ON/OFF parts that form, with opening/closing inlet hole 24.
Herein, standing part 28 and ON/OFF part 30 are connected to each other by neck 32, neck 32 forms along the interval of circumferencial direction with the rule determined by the hollow sectors that forms by the some parts that machines away between standing part 28 and the ON/OFF part 30 (space portion) 34, and each neck 32 has certain elasticity.Each hollow sectors 34 forms the ellipse of certain size, and forms along peripheral direction according to the interval of rule.
Standing part 28 can have any structure, as long as it can be with the center fixation of suction valve 20 on the valve seat part 26 of piston 12.As an embodiment, under the situation of bolt structure, in suction valve 20, be formed centrally through hole 38, bolt 36 passes wherein, centre in valve seat part 26 forms bolton groove 40, and corresponding, bolt 36 is fixed in the bolton groove 40 after passing through hole 38.
ON/OFF part 30 has along the whole lip-deep zone of suction valve 20 at circumferencial direction, and this zone of ON/OFF part 30 is greater than the diameter of the inlet hole 24 of piston 12.
Discharge valve assembly 22 comprises: a valve pocket 50, and the front portion that it is installed in cylinder 14 has the discharge orifice 46 that is used for exhaust fluid; An expulsion valve 48, it is arranged in the valve pocket 50, so that its front sealing with cylinder 14 is contacted, so that compressed fluid in compression chamber 18 is carried out opening; And a valve spring 52, it places between the inwall of expulsion valve 48 and valve pocket 50, provides certain elastic force to give expulsion valve 48.
In more detail, when the pressure in the compression chamber 16 acquired a certain degree, this expulsion valve 48 retreated by the elastic force that overcomes valve spring 52, and compressed fluid is disposed to the outside by discharge orifice 46 in compression chamber 16.
The operation of the suction valve assembly of reciprocal compressor of the present invention is below described.
Fig. 6 is the sectional view that shows the serviceability of suction valve of the present invention.
At first, when when driver element 8 provides electric power, the driving force of driver element 8 passes to piston 12, in view of the above, when piston 12 during by means of the retreating inertia and retreat of the pressure difference of fluid and piston 12, neck 32 bendings of suction valve 20, ON/OFF part 30 is separated with the valve seat part of piston 12, inlet hole 24 is opened, so fluid offers compression chamber 24.
Herein, because form inlet hole 24 with the interval of rule in the front portion of piston 12, therefore by should a plurality of inlet holes 24 suction fluids along peripheral direction.Because form the neck 32 of suction valve 20 with the interval of rule, can reduce the opening angle of suction valve 20, and reduce the stress of concentrating that acts on the neck 32.
In this state, when driver element 8 during along the running of backward direction, piston 12 moves forward, the fluid that is filled in the compression chamber 16 is compressed, when the pressure in the compression chamber 16 acquires a certain degree, expulsion valve 48 retreats by the elastic force that overcomes valve spring 52, and separates with the front portion of cylinder 14, and the fluid of compression is discharged into the outside by the discharge orifice 46 that forms at valve pocket 50 places in compression chamber 16.
Therefore herein, by the pressure of compression chamber 16 and the elastic force of suction valve 20, the ON/OFF part 30 of suction valve 20 closely contacts with the valve seat part 26 of piston 12, can prevent that fluid reflux in the compression chamber 16 is in inlet hole 24.
Fig. 7 is the front view that shows the suction valve assembly of third embodiment of the invention.
In the suction valve 58 of second embodiment of the invention, standing part 60 with through hole 62 forms at heart place therein, thereby be fixed on the valve seat part 26 of piston 12, the ON/OFF part 64 that forms in the periphery of standing part 60 is used to carry out the opening of inlet hole 24, connects a plurality of necks 66 between standing part 60 and ON/OFF part 64.
Herein, these a plurality of necks 66 radially connect by hollow sectors 68, and described hollow sectors 68 is formed by the some parts that machines away between standing part 60 and the ON/OFF part 64.Be preferably formed 4 necks 66, can adjust the quantity of neck according to the pressure of fluid.
Fig. 8 is the front view of the suction valve assembly of third embodiment of the invention.
In suction valve 70 in third embodiment of the invention, be formed centrally standing part 72 therein, so that be fixed on the valve seat part 26 of piston 12, the ON/OFF part 74 that forms in the periphery of standing part 72 is used to carry out the opening of inlet hole 24, connects a plurality of necks 76 between standing part 72 and ON/OFF part 74.Periphery in ON/OFF part 74 forms guide groove 78, so that pass the level and smooth discharging of the fluid of inlet hole 24.
Herein, the interval with rule forms the guide groove 78 with certain width on the excircle of suction valve 70.
Industrial applicibility
The advantage of the suction valve assembly of reciprocating compressor of the present invention is below described.
In the suction valve assembly of reciprocating compressor of the present invention because along peripheral direction with rule The interval form the inlet hole of piston, therefore suck uniformly fluid along circumferencial direction, act on suction The whole lip-deep load that enters valve is uniformly, can reduce the opening angle of inlet valve, can reduce Act on the stress of concentrating on the neck of inlet valve, therefore can reduce the damage of inlet valve.
In addition, by forming the inlet hole of piston along circumferencial direction with the interval of rule, and along circle Zhou Fangxiang forms the ON/OFF part of inlet valve, does not therefore need to adjust the position of inlet valve in the assembling process Put, therefore can improve packaging efficiency.

Claims (6)

1. the valve assembly of a reciprocal compressor comprises:
One piston, it has a valve seat part that is in its front portion and a plurality of inlet holes that suck fluid at circumferencial direction with spaced apart being used to of rule; And
One suction valve, it is arranged on the described valve seat part, in order to carry out the opening of described inlet hole;
Wherein said suction valve comprises: a standing part, and it is fixed on the described valve seat part of described piston; One ON/OFF part, it is formed on the periphery of described standing part, in order to carry out the opening of described inlet hole; And a plurality of necks, its interval with rule is formed between described standing part and the described ON/OFF part, and
Wherein, a plurality of guide grooves are formed on the excircle of described ON/OFF part, so that discharge smoothly by the fluid of described inlet hole with the interval of rule.
2. valve assembly as claimed in claim 1 is characterized in that, described standing part is formed between the center of valve seat part of the core of described suction valve and described piston.
3. valve assembly as claimed in claim 1 is characterized in that, described neck is formed on by machining away between the more formed hollow sectors of some parts between described standing part and the described ON/OFF part with the interval of rule.
4. valve assembly as claimed in claim 3 is characterized in that described hollow sectors is shaped as the ellipse that is mutually symmetrical.
5. valve assembly as claimed in claim 1 is characterized in that, described neck radially is formed on by machining away between the more formed hollow sectors of some parts between described standing part and the described ON/OFF part.
6. valve assembly as claimed in claim 5 is characterized in that, described hollow sectors is to be shaped as the round belt shape by the some parts that machines away between described standing part and the described ON/OFF part.
CNB038015854A 2002-08-23 2003-08-22 Valve assembly of reciprocating compressor Expired - Fee Related CN100449144C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020020050218A KR20040017959A (en) 2002-08-23 2002-08-23 Valve for reciprocating compressor
KR1020020050218 2002-08-23

Publications (2)

Publication Number Publication Date
CN1592819A CN1592819A (en) 2005-03-09
CN100449144C true CN100449144C (en) 2009-01-07

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CNB038015854A Expired - Fee Related CN100449144C (en) 2002-08-23 2003-08-22 Valve assembly of reciprocating compressor

Country Status (8)

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US (1) US20050013717A1 (en)
JP (1) JP4054023B2 (en)
KR (1) KR20040017959A (en)
CN (1) CN100449144C (en)
AU (1) AU2003251217A1 (en)
BR (1) BR0306146B1 (en)
DE (1) DE10392195T5 (en)
WO (1) WO2004018874A1 (en)

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US8372041B2 (en) * 2009-05-08 2013-02-12 The Alfred E. Mann Foundation For Scientific Research In-line fluid transfer devices and ambulatory infusion devices including the same
US8323247B2 (en) * 2009-05-08 2012-12-04 The Alfred E. Mann Foundation For Scientific Research Fluid transfer devices with fluid bypass and ambulatory infusion devices including same
US8292601B2 (en) * 2009-05-08 2012-10-23 The Alfred E. Mann Foundation For Scientific Research Fluid transfer devices with resilient valve structures and ambulatory infusion devices including same
DE102010039516A1 (en) * 2010-08-19 2012-02-23 Robert Bosch Gmbh Valve, in particular a hydraulic piston pump
BRPI1105143B1 (en) * 2011-12-15 2021-07-27 Embraco Indústria De Compressores E Soluções Em Refrigeração Ltda SUCTION VALVE ASSEMBLY FOR ALTERNATIVE COMPRESSOR
KR102175351B1 (en) * 2014-06-25 2020-11-06 엘지전자 주식회사 A linear compressor and a suction apparatus of the linerar compressor
KR102238345B1 (en) * 2016-05-03 2021-04-09 엘지전자 주식회사 Linear compressor
US11885325B2 (en) 2020-11-12 2024-01-30 Haier Us Appliance Solutions, Inc. Valve assembly for a reciprocating compressor
CN112594424B (en) * 2020-12-03 2022-11-01 珠海格力节能环保制冷技术研究中心有限公司 Exhaust structure, compressor and air conditioner
TWI778591B (en) * 2021-04-21 2022-09-21 周文三 Piston of cylinder of air compressor
TWI784492B (en) * 2021-04-21 2022-11-21 周文三 Piston of cylinder of air compressor

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US5163819A (en) * 1992-02-07 1992-11-17 General Motors Corporation Asymmetrical suction porting for swash plate compressor
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US5171135A (en) * 1991-07-25 1992-12-15 Tecumseh Products Company Flexible suction valve retainer
US5993178A (en) * 1996-05-06 1999-11-30 Lg Electronics, Inc. Linear compressor
CN1356474A (en) * 2000-12-01 2002-07-03 Lg电子株式会社 Valve-fixing structure of reciprocating compressor

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US4834632A (en) * 1988-01-25 1989-05-30 Tecumseh Products Company Compressor valve system
WO1992020919A1 (en) * 1991-05-10 1992-11-26 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Reciprocatory piston type compressor with valve assemblies having enhanced pressure response characteristics
US5171135A (en) * 1991-07-25 1992-12-15 Tecumseh Products Company Flexible suction valve retainer
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CN1356474A (en) * 2000-12-01 2002-07-03 Lg电子株式会社 Valve-fixing structure of reciprocating compressor

Also Published As

Publication number Publication date
CN1592819A (en) 2005-03-09
BR0306146B1 (en) 2012-04-17
US20050013717A1 (en) 2005-01-20
BR0306146A (en) 2004-10-19
WO2004018874A1 (en) 2004-03-04
JP2005525506A (en) 2005-08-25
JP4054023B2 (en) 2008-02-27
AU2003251217A1 (en) 2004-03-11
DE10392195T5 (en) 2005-07-28
KR20040017959A (en) 2004-03-02

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Granted publication date: 20090107

Termination date: 20100822