CN103835923B - A kind of reciprocating compressor valve block structure of exhaust valve plate fast opening and closing - Google Patents
A kind of reciprocating compressor valve block structure of exhaust valve plate fast opening and closing Download PDFInfo
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- CN103835923B CN103835923B CN201310674213.8A CN201310674213A CN103835923B CN 103835923 B CN103835923 B CN 103835923B CN 201310674213 A CN201310674213 A CN 201310674213A CN 103835923 B CN103835923 B CN 103835923B
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Abstract
The invention discloses the reciprocating compressor valve block structure of a kind of exhaust valve plate fast opening and closing, the valve plate having steam vent in valve seat, valve seat it is provided with including plate face, valve seat is provided with lift stopper, being provided with exhaust valve plate between lift stopper and valve seat, described exhaust valve plate has the fixing end pushed down by lift stopper and the movable end covering steam vent；Between exhaust valve plate and valve seat, being provided with the spring leaf that pretightning force is towards the opening direction of exhaust valve plate, spring leaf also has fixing end and movable end, and the fixing end of spring leaf maintains static relative to valve plate；The rigidity of described exhaust valve plate is not less than 600 N*mm.The exhaust valve plate of the present invention has stronger rigidity, and it is conducive to valve block to realize closedown rapidly；Spring leaf can be aided with elastic force valve block is opened when, helps it more quickly to open.The valve block life-span of the present invention is long, and impact noise is little, and valve block response rapidly, can be as the valve group building block of reciprocating compressor.
Description
Technical field
The present invention relates to compressor field, particularly the valve block structure in reciprocating compressor.
Background technology
A closed loop cavity break-make being realized break-make by the keying of valve block is actually defined in compressor, piston moves back and forth between two stops of cylinder, thus the cryogenic gas being passed through in cylinder is compressed, transfer high-temperature gas output to, being passed through and exporting of gas, i.e. correspond to " air-breathing " and the action of " aerofluxus " of compressor.In the valve group of compressor, including valve plate, exhaust valve plate and lift stopper, wherein have suction hole, steam vent on valve plate, exhaust valve plate has fixing end and movable end, movable end is affixed near steam vent and covers steam vent, and lift stopper is pressed in exhaust valve plate and fixes above end.During aerofluxus, when gas is gone out from steam vent, the movable end of exhaust valve plate is impacted to lift, and steam vent is opened, and gas is expelled in the internal cavity of cylinder cover, and lift stopper controls the raising height of exhaust valve plate；Otherwise during air-breathing, due to the negative-pressure sucking that valve plate is other, exhaust valve plate reset, cover steam vent, by closing.
In existing scheme exhaust structure, raising of exhaust valve plate is opened and falls the action closed after rise, has relied on the stiffness by itself of exhaust valve plate.One high efficiency reciprocating compressor, its suction, exhaust event should be accurately punctual, and valve block should fast opening and closing.But in reality, the phenomenon that exhaust valve plate " late release " and valve block " tremble " the most often occurs.
So-called " late release ", refer to allow valve block be easier to open, engineering staff selects the valve block that rigidity is little, the throttle slice thickness that this rigidity is little end thin, fixing is narrower, but the most frivolous structure makes its shut-in time long, seating velocity is very slow, so that valve block not yet completely closes when piston arrives dead-centre position, until piston reverses direction has been moved, a period of time just falls on the valve seat of valve plate.Valve block " late release " can make gas that " refluence " phenomenon occurs when piston reverses direction is moved, and part high-temperature gas returns cylinder, and the gas flow making participation expand increases, and reduces compressor displacement.Exhaust valve plate can be granted and its resilience force direction thrust in the same direction while " flowing backwards " by gas, and this will increase the valve block stroke speed to valve seat, is easily caused valve block and damages；Additionally rigidity is the least, too hold valve block easy to open, and the speed that it clashes into lift stopper is the biggest, is easily damaged air bleeding valve, increases noise；Impulsive force, impact velocity are excessive, the most easily make frivolous valve block rock, tilt, fragmentation.
So-called " trembling ", refers to allow valve block be easier to close, and engineering staff selects the valve block that rigidity is big, the valve block that this rigidity is big to be not easy bending, therefore resilience force is relatively big, and can reset rapidly exhaust event is complete when closed grate hole.But due to valve block rigidity increases, valve block opens also phase delay.After valve block is opened, cylinder interior gas pressure is declined slightly, if at this moment the resilience force of valve block is excessive, and poor more than valve block pressure at both sides, valve block can be forced adverse movement (the direction motion that valve block is closed), hinders smooth and easy aerofluxus, thus in-cylinder pressure increases the most again, again the pressure increased makes valve block again upwards be held up (the direction motion that valve block is opened), goes round and begins again, ultimately results in valve block of reciprocating vibration on short distance high frequency ground.Valve block " trembles ", on the one hand valve block can be caused frequently to open and close, and the fluctuation of cylinder internal gas pressure frequently, causes valve block fatigue damage；On the other hand the time cross-section of air valve also can be made to be greatly reduced.This abnormal valve plate movement reduces gas transmission coefficient and the indicated efficiency of compressor.
Visible, rigidity is little or the valve block that rigidity is big no matter to be intended to selection, and it the most easily causes various adverse consequences, it is difficult to realize real efficient exhaust valve plate fast opening and closing.
Summary of the invention
The technical problem to be solved in the present invention is: provide the reciprocating compressor valve block structure of a kind of exhaust valve plate fast opening and closing, and it is while meeting the requirement of exhaust valve plate fast opening and closing, is difficult to again valve block " late release " and " trembling " phenomenon occur.
The present invention solves the solution of its technical problem:
A kind of reciprocating compressor valve block structure of exhaust valve plate fast opening and closing, the valve plate having steam vent in valve seat, valve seat it is provided with including plate face, valve seat is provided with lift stopper, being provided with exhaust valve plate between lift stopper and valve seat, described exhaust valve plate has the fixing end pushed down by lift stopper and the movable end covering steam vent；Between exhaust valve plate and valve seat, being provided with the spring leaf that pretightning force is towards the opening direction of exhaust valve plate, spring leaf also has fixing end and movable end, and the fixing end of spring leaf maintains static relative to valve plate；The rigidity of described exhaust valve plate is not less than 600 N*mm.
As the further improvement of technique scheme, the fixing end of described spring leaf is together with the fixing end of exhaust valve plate, motionless with being compacted by lift stopper.
As the further improvement of technique scheme, the movable end bending of described spring leaf, bending direction is towards the opening direction of exhaust valve plate.
As the further improvement of technique scheme, between described exhaust valve plate and lift stopper, it is provided with air bleeding valve reed.
The invention has the beneficial effects as follows: the exhaust valve plate of the present invention has stronger rigidity, it is conducive to valve block to realize closedown rapidly, and less to valve seat stroke speed, self durability degree is high；Simultaneously because the existence of spring leaf, it can be aided with elastic force valve block is opened when, help it more quickly to open.Valve block opens and closes rapidly, just makes air valve have sufficient time cross-section, and velocity ratio when gas flows through valve clearance passage is relatively low, and fluid resistance loss is the least, improves air input efficiency and the efficiency of compressor.It addition, exhaust valve plate is when closed, spring leaf also plays the effect of buffering, reduce the exhaust valve plate impact when closed to valve seat, also reduce the exhaust valve plate impact to lift stopper in opening process simultaneously, extend the valve block life-span, reduce the impact noise of valve block.Present inventive concept is ingenious, and valve block response rapidly, can be as the valve group building block of reciprocating compressor.
Accompanying drawing explanation
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, in describing embodiment below, the required accompanying drawing used is briefly described.Obviously, described accompanying drawing is a part of embodiment of the present invention rather than whole embodiment, and those skilled in the art is not on the premise of paying creative work, it is also possible to obtain other designs and accompanying drawing according to these accompanying drawings.
Fig. 1 is the present invention when using embodiment 1, and integrally-built cross-sectional schematic, now exhaust valve plate is closed；
Fig. 2 is the present invention when using embodiment 1, and integrally-built cross-sectional schematic, now exhaust valve plate is in opening；
Fig. 3 is the present invention when using embodiment 2, and integrally-built cross-sectional schematic, now exhaust valve plate is closed；
Fig. 4 is the present invention when using embodiment 2, and integrally-built cross-sectional schematic, now exhaust valve plate is in opening；
Fig. 5 is the side view of the spring leaf of the present invention；
Fig. 6 is that the axle of spring leaf measures intention.
Detailed description of the invention
Below with reference to embodiment and accompanying drawing, the technique effect of design, concrete structure and the generation of the present invention is carried out clear, complete description, to be completely understood by the purpose of the present invention, feature and effect.Obviously; described embodiment is a part of embodiment of the present invention rather than whole embodiment, based on embodiments of the invention; other embodiments that those skilled in the art is obtained on the premise of not paying creative work, belong to the scope of protection of the invention.It addition, all connection/annexations being previously mentioned in literary composition, the most singly refer to that component directly connects, and refer to couple auxiliary according to being embodied as situation by adding or reducing, form more excellent draw bail.Each technical characteristic in the invention, can be with combination of interactions on the premise of the most conflicting conflict.
Embodiment 1:
With reference to Fig. 1～Fig. 2, a kind of reciprocating compressor valve block structure of exhaust valve plate fast opening and closing, the valve plate 1 having steam vent 2 in valve seat, valve seat it is provided with including plate face, valve seat is provided with lift stopper 3, being provided with exhaust valve plate 4 between lift stopper 3 and valve seat, described exhaust valve plate 4 has the fixing end pushed down by lift stopper 3 and the movable end covering steam vent 2；Between exhaust valve plate 4 and valve seat, being provided with the spring leaf 5 that pretightning force is towards the opening direction of exhaust valve plate 4, spring leaf 5 also has fixing end and movable end, and the fixing end of spring leaf 5 maintains static relative to valve plate 1；The rigidity of described exhaust valve plate 4 is not less than 600 N*mm.
Being further used as preferred embodiment, the fixing end of described spring leaf 5 is together with the fixing end of exhaust valve plate 4, with being compacted motionless by lift stopper 3.All can be seen that from Fig. 1～Fig. 4, in this intrinsic accessory of lift stopper 3, be the boss having and fixing end for pushing down exhaust valve plate, in order to simplify structure, directly spring leaf 5 can be arranged on exhaust valve plate 4, and push down with by described boss.If but the parts such as valve plate being transformed, fixing the fixing end of spring leaf 5 with other accessory, also may be used.
With reference to Fig. 5～Fig. 6, being further used as preferred embodiment, the movable end bending of described spring leaf 5, bending direction is towards the opening direction of exhaust valve plate 4.This is simplest to make spring leaf 5 pretightning force towards the mode of exhaust valve plate 4 opening direction.Specific to placement form as shown in Figure 4,5, air-flow flows into from the lower section of steam vent 2, is pushed up the movable end of top row air valve plate 4, and at this time spring leaf 5 is also aided with jacking force upwards to exhaust valve plate 4, therefore exhaust valve plate 4 can be opened rapidly.
Further, spring leaf 5 global design becomes " scholar " font, that is from a flat main body left and right each flattened go out both wings, both wings above are wider, and together with the front end of main body in the lump as the movable end of spring leaf 5；Both wings below are narrower and slightly upwarp, and together with the rear end of main body in the lump as the fixing end of spring leaf 5.The most front wide and rear narrow shape can improve the pretightning force of spring leaf 5, and the rear both wings on the other hand slightly upwarped are easy to be pressed surely, and front both wings are wider with the movable end contact surface of exhaust valve plate 4, exhaust valve plate 4 plays certain protective effect and prevents it from turning on one's side.
Embodiment 2:
With reference to Fig. 4, Fig. 5, remaining structure of embodiment 2 is substantially the same manner as Example 1, but between described exhaust valve plate 4 and lift stopper 3, is provided with air bleeding valve reed 6.Air bleeding valve reed 6 is also mainly used for reducing vibration, has this accessory in bigger compressor.
Table 1:
Table 1 further illustrates the Rigidity of exhaust valve plate 4, wherein the bracket numeral in the first row form represents the thickness of exhaust valve plate 4, the sampling rule measuring point is when valve block closes, valve block movable end center of arc and steam vent center superposition, takes this central point overlapped.0.01mm, 0.02mm etc. first erect column of figure and represent the different ejection heights of same test point.
The bending stiffness of exhaust valve plate is EI, according to the data in table 1, and the formula of bending rigidity, through can be calculated, the average bending rigidity of the exhaust valve plate of 0.203mm is about the average bending rigidity of the exhaust valve plate of EI=1574N*mm, 0.177mm and is about EI=1000
The average bending rigidity of the exhaust valve plate of N*mm, 0.152mm is about EI=683
N*mm².In view of real work situation, preferably exhaust valve plate rigidity is set to not less than 600 N*mm, thus ensures that exhaust valve plate is big rigidity valve block.
Above the better embodiment of the present invention is illustrated, but the invention is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent modifications or replacement on the premise of spirit of the present invention, and modification or the replacement of these equivalents are all contained in the application claim limited range.
Claims (4)
1. the reciprocating compressor valve block structure of an exhaust valve plate fast opening and closing, the valve plate (1) having steam vent (2) in valve seat, valve seat it is provided with including plate face, valve seat is provided with lift stopper (3), it is characterized in that: be provided with exhaust valve plate (4) between lift stopper (3) and valve seat, described exhaust valve plate (4) has the fixing end pushed down by lift stopper (3) and the movable end covering steam vent (2)；Between exhaust valve plate (4) and valve seat, being provided with the spring leaf (5) that pretightning force is towards the opening direction of exhaust valve plate (4), spring leaf (5) also has fixing end and movable end, and the fixing end of spring leaf (5) maintains static relative to valve plate (1)；The rigidity of described exhaust valve plate (4) is not less than 600 N*mm；Described spring leaf (5) global design becomes " scholar " font.
The reciprocating compressor valve block structure of exhaust valve plate fast opening and closing the most according to claim 1, it is characterised in that: the fixing end of described spring leaf (5) is together with the fixing end of exhaust valve plate (4), with being compacted motionless by lift stopper (3).
The reciprocating compressor valve block structure of exhaust valve plate fast opening and closing the most according to claim 2, it is characterised in that: the movable end bending of described spring leaf (5), bending direction is towards the opening direction of exhaust valve plate (4).
The reciprocating compressor valve block structure of exhaust valve plate fast opening and closing the most according to claim 2, it is characterised in that: between described exhaust valve plate (4) and lift stopper (3), it is provided with air bleeding valve reed (6).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310674213.8A CN103835923B (en) | 2013-12-11 | 2013-12-11 | A kind of reciprocating compressor valve block structure of exhaust valve plate fast opening and closing |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310674213.8A CN103835923B (en) | 2013-12-11 | 2013-12-11 | A kind of reciprocating compressor valve block structure of exhaust valve plate fast opening and closing |
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| CN103835923A CN103835923A (en) | 2014-06-04 |
| CN103835923B true CN103835923B (en) | 2016-11-23 |
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| CN201310674213.8A Active CN103835923B (en) | 2013-12-11 | 2013-12-11 | A kind of reciprocating compressor valve block structure of exhaust valve plate fast opening and closing |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106930928A (en) * | 2015-12-31 | 2017-07-07 | 华域三电汽车空调有限公司 | Cylinder cover cushion |
| CN110905769B (en) * | 2019-12-11 | 2021-10-26 | 珠海格力节能环保制冷技术研究中心有限公司 | Exhaust valve assembly, compressor and household appliance |
| CN113357131B (en) * | 2021-07-22 | 2022-10-21 | 珠海格力节能环保制冷技术研究中心有限公司 | Compressor valve plate assembly, air valve assembly and piston compressor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3909346A1 (en) * | 1989-03-22 | 1990-09-27 | Wabco Westinghouse Fahrzeug | Pressure valve for a compressor |
| CN1057706A (en) * | 1990-06-19 | 1992-01-08 | 巴西船用压缩机有限公司 | The valve that is used for hermetic refrigeration compressor |
| CN1702325A (en) * | 2004-05-28 | 2005-11-30 | 松下电器产业株式会社 | Enclosed type compressor |
| CN1806122A (en) * | 2004-09-07 | 2006-07-19 | 松下电器产业株式会社 | Hermetic compressor |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09137779A (en) * | 1995-11-16 | 1997-05-27 | Sanyo Electric Co Ltd | Refrigerant compressor |
| CN202100467U (en) * | 2011-04-20 | 2012-01-04 | 艾默生环境优化技术(苏州)研发有限公司 | Valve component and compressor with same |
| CN202833044U (en) * | 2012-09-25 | 2013-03-27 | 珠海格力节能环保制冷技术研究中心有限公司 | Suction valve disc for piston-type refrigeration compressor |
-
2013
- 2013-12-11 CN CN201310674213.8A patent/CN103835923B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3909346A1 (en) * | 1989-03-22 | 1990-09-27 | Wabco Westinghouse Fahrzeug | Pressure valve for a compressor |
| CN1057706A (en) * | 1990-06-19 | 1992-01-08 | 巴西船用压缩机有限公司 | The valve that is used for hermetic refrigeration compressor |
| CN1702325A (en) * | 2004-05-28 | 2005-11-30 | 松下电器产业株式会社 | Enclosed type compressor |
| CN1806122A (en) * | 2004-09-07 | 2006-07-19 | 松下电器产业株式会社 | Hermetic compressor |
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| CN103835923A (en) | 2014-06-04 |
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