CN100532854C - Anti-backflow device for scroll compressor - Google Patents
Anti-backflow device for scroll compressor Download PDFInfo
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- CN100532854C CN100532854C CNB2005100137965A CN200510013796A CN100532854C CN 100532854 C CN100532854 C CN 100532854C CN B2005100137965 A CNB2005100137965 A CN B2005100137965A CN 200510013796 A CN200510013796 A CN 200510013796A CN 100532854 C CN100532854 C CN 100532854C
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Abstract
The invention relates to an anti-reflux device of vortex compressor, which comprises: a fixing reel meshed with the rotation reel to form a couple of compress rooms, connected to the final compress room to form the discharge outlet, to discharge compressed air to the discharge space; a valve support is projected around the outlet of discharge outlet; a valve sheet axially sliding supported at the valve support to switch the discharge outlet via the pressure difference between the compress room and the discharge space. The invention can reduce the fittings number of anti-reflux valve, to reduce the cost, and limit the change of anti-reflux valve to reduce the noise.
Description
Technical field
The present invention relates to the backflow protection device (APPARATUS FOR PREVENTINGBACKFLOW OF SCROLL COMPRESSOR) of scroll compressor, particularly, when reverse stop valve opens and closes, can reduce the backflow protection device that valve collides the scroll compressor of the impact cause and noise.
Background technique
Above-mentioned scroll compressor is a widely used high efficiency low noise compressor in the air conditioner field, in above-mentioned scroll compressor, two spools carry out relative rotary motion, and between each spool, form in pairs a plurality of pressing chambers, the pressing chamber of above-mentioned formation moves and smaller volume to central direction continuously, discharges behind the compression refrigerant thereby suck also continuously.
Fig. 1 is the sectional drawing of scroll compressor structure of the prior art.
As shown in the figure, scroll compressor of the prior art includes following several sections: the shell 1 that is provided with gas suction pipe SP and gas outlet pipe DP; The inner peripheral surface that respectively is fixed on above-mentioned shell 1 is the main frame 2 and the sub-frame (not shown) of both sides up and down; Be installed in the drive motor 3 between above-mentioned main frame 2 and the sub-frame (not shown); Be pressed into the center that is arranged on above-mentioned drive motor 3, connect above-mentioned main frame 2, and transmit the live axle 4 of the turning effort power of above-mentioned drive motor 3; Be arranged on the above-mentioned main frame 2, be incorporated into above-mentioned live axle 4, be rotated the spinning reel 5 of motion; For the gear teeth 5a that is engaged in above-mentioned spinning reel 5 and form a plurality of pressing chamber P, be formed with the gear teeth 6a of helical type and be fixed on fixedly spool 6 above the above-mentioned main frame 2; Be incorporated into the back side of said fixing spool 6, and with the internal separation of above-mentioned shell 1 for sucking the high low pressure separating plate 7 of regional S1 and discharging area S2; Be incorporated into the light board back side of said fixing spool 6, be used to prevent be discharged to the reverse stop valve 8 of the pressurized gas adverse current phenomenon of above-mentioned discharging area S2.
As shown in Figure 2, above-mentioned reverse stop valve 8 includes: be provided with set inner space for the exhaust port 6c that holds said fixing spool 6, and be installed in the valve shell frame 8a (valve housing) at the light board back side of said fixing spool 6; Be arranged at the inside of above-mentioned valve shell frame 8a, and can slide,, open and close the thin valve plate body 8b of the exhaust port 6c of said fixing spool 6 by the pressure difference of pressing chamber P and discharging area S2.
In the accompanying drawing there be undeclared symbol: 4a is the machine oil stream; 6b is a suction port.
Below the as above working procedure of the scroll compressor of the prior art of structure is described.
That is, live axle 4 together rotates by connecting power supply and drive motor 3, makes spinning reel 5 with the rotation of eccentric distance size.Simultaneously, above-mentioned spinning reel 5 will and fixedly form two pressing chamber P a pair of and that move continuously between gear teeth 5a, the 6a of spool 6, the pressing chamber P of above-mentioned formation is under the effect of spinning reel 5 continuous rotary motion, to move to central direction, the volume of pressing chamber P is constantly reduced, discharge behind the compression refrigerant gas thereby suck also.
Wherein, as shown in Figure 2, in the process that above-mentioned compressor is normally operated, because the pressure of final pressing chamber P is all the time greater than the pressure of discharging area S2, above-mentioned valve plate body 8b is pushed rising under the pressure of above-mentioned pressing chamber P, thus, open the exhaust port 6c of said fixing spool 6, and smooth and easy discharge pressurized gas.
On the contrary, when the above-mentioned compressor shut-down operation, because the pressure of final pressing chamber P is lower than the pressure of discharging area S2 relatively, make above-mentioned valve plate body 8b under the pressure of own wt and discharging area S2, be pushed decline, thus, close the exhaust port 6c of said fixing spool 6, and prevent that the above-mentioned cold media air adverse current of discharging area S2 that is discharged to is to above-mentioned pressing chamber P.
But, in the backflow protection device of the scroll compressor of above-mentioned prior art, need other valve shell frame 8a be installed at the back side of said fixing spool 6, thereby cause the increase of accessory number, and corresponding assembly manipulation, cost of production increased simultaneously.
And when above-mentioned valve plate body 8b slided up and down and opens and closes in the inside of valve shell frame 8a, when the pressure ratio of above-mentioned compressor exceeds under the situation of certain limit, the state of above-mentioned compressor was with instability, and exception throw noise or valve sound.
Summary of the invention
In order to solve above-mentioned problems of the prior art, the object of the present invention is to provide a kind of backflow protection device of scroll compressor, can reduce the accessory number, and simplify assembly manipulation, thereby can reduce cost of production by above-mentioned measure.
And, another object of the present invention is to provide a kind of backflow protection device of scroll compressor, when compressor is operated, can reduce because abnormal sound or the valve sound that compression ratio is produced when changing.
To achieve these goals, the backflow protection device of scroll compressor of the present invention, comprise fixedly spool and valve plate body, the valve supporting portion is protruded with both fixed heights around the valve plates face of exhaust port and is formed, and the symmetrical valve steering channel that has been recessed to form on the side face within it, this valve steering channel comprises: the vertical guide groove, and the end in the valve supporting portion caves in axle direction, and pilot valve door-plate body; Horizontal steering channel is caving in circumferencial direction more continuously from the vertical guide groove; Sliding-groove caves in Vertical direction continuously from horizontal steering channel, and valve plates axon direction is slided and switching.
The backflow protection device of the scroll compressor in according to the present invention, make in fixing integrally formed valve supporting portion above the spool, and on above-mentioned valve supporting portion in conjunction with being used to open and close the reverse stop valve of exhaust port, thereby when reducing cost of production, also the displacement of reverse stop valve be can limit, and corresponding valve sound or abnormal sound reduced.
Description of drawings
Fig. 1 is the sectional drawing of scroll compressor of the prior art;
Fig. 2 is the skeleton diagram of working procedure of the backflow protection device of scroll compressor of the prior art;
Fig. 3 is the sectional drawing of scroll compressor one embodiment among the present invention;
Fig. 4 is the exploded perspective view of the backflow protection device of the scroll compressor among the present invention;
Fig. 5 is the setting plane of the backflow protection device of the scroll compressor among the present invention;
Fig. 6 is " I-I " line sectional drawing among Fig. 5;
Fig. 7 a and Fig. 7 b are the working state figures of the backflow protection device of the scroll compressor among the present invention.
The critical piece description of reference numerals
10: fixedly spool 13: exhaust port
13a: valve plates face (valve sheet) 14: valve supporting portion
15: valve steering channel 15a: vertical guide groove
15b: horizontal steering channel 15c: sliding-groove
20: valve plate body 21: switching portion
22: the supporting portion
Embodiment
Embodiment with reference to the accompanying drawings is described in detail the backflow protection device of the scroll compressor among the present invention.
Fig. 3 is the sectional drawing of scroll compressor one embodiment among the present invention; Fig. 4 is the exploded perspective view of the backflow protection device of the scroll compressor among the present invention; Fig. 5 is the setting plane of the backflow protection device of the scroll compressor among the present invention; Fig. 6 is " I-I " line sectional drawing among Fig. 5; Fig. 7 a and Fig. 7 b are the working state figures of the backflow protection device of the scroll compressor among the present invention.
As shown in the figure, be provided with the scroll compressor of the backflow protection device among the present invention, it includes following several sections: the shell 1 that is provided with gas suction pipe SP and gas outlet pipe DP; The inner peripheral surface that respectively is fixed on above-mentioned shell 1 is the main frame 2 and the sub-frame (not shown) of both sides up and down; Be installed in the drive motor 3 between above-mentioned main frame 2 and the sub-frame (not shown); Be pressed into the center that is arranged on above-mentioned drive motor 3, and transmit the live axle 4 of turning effort power to spinning reel 5; Be arranged on the above-mentioned main frame 2, be incorporated into the spinning reel 5 that above-mentioned live axle 4 is rotated motion; In order to be engaged in above-mentioned spinning reel 5 and to form two a pair of pressing chamber P, and be fixed on fixedly spool 10 above the above-mentioned main frame 2; Be incorporated into the back side of said fixing spool 10, and with the internal separation of above-mentioned shell 1 for sucking the high low pressure separating plate 7 of regional S1 and discharging area S2; Be incorporated into the valve supporting portion 14 of fixedly spool 10 described later, and open and close the valve plate body 20 of exhaust port 13 by the pressure difference between pressing chamber P and the discharging area S2.
For the gear teeth that are engaged in above-mentioned spinning reel 5 and form above-mentioned pressing chamber P, said fixing spool 10 will form the gear teeth 11 of involute shape in the bottom surface of its light board, be formed with the suction port 12 that is communicated in final pressing chamber P on the outer circumferential face of above-mentioned light board.In addition, the middle body of above-mentioned light board is formed with the exhaust port 13 that is communicated in final pressing chamber P and pressurized gas is discharged to discharging area S2, at the outlet side of above-mentioned exhaust port 13, around above-mentioned exhaust port 13, be formed with the valve supporting portion 14 that both fixed heights protrudes and support above-mentioned valve plate body 20.
Above-mentioned valve supporting portion 14 is when plane projection, be the valve plates face 13a annular shape on every side that is centered around above-mentioned exhaust port 13, the inner peripheral surface both sides of above-mentioned valve supporting portion 14 are formed with valve steering channel 15, and above-mentioned valve steering channel 15 is used for inserting and supporting valve plate body 20 described later.And above-mentioned valve steering channel 15 will be recessed to form with " cup " shape when front projection, axle direction can be inserted above-mentioned valve plate body 20, and with circumferencial direction rotation, make above-mentioned valve plate body removable being combined in the valve steering channel 15 about in the of 20.Promptly, above-mentioned valve steering channel 15 forms vertical guide groove 15a from the outer ends of valve supporting portion 14 in the middle of inboard, and on the circumferencial direction of above-mentioned vertical guide groove 15a, form horizontal steering channel 15b, simultaneously with the vertical again direction of above-mentioned horizontal steering channel 15b on form sliding-groove 15c.
As shown in Figure 6, it is relatively low that the height of above-mentioned horizontal steering channel 15b cans be compared to most the height of the fixing valve plates face 13a of spool 10, thereby prevent to break away from after above-mentioned valve plate body 20 is incorporated into sliding-groove 15c.
Above-mentioned valve plate body 20 is made by the thin steel plate materials of rubber-like, the middle body of above-mentioned valve plate body 20 is formed with the switching portion 21 of the circle that is used to open and close above-mentioned exhaust port 13, and the outer circumferential face both sides of above-mentioned switching portion 21 are then protruded and are formed with the supporting portion 22 that is clamped in above-mentioned valve steering channel 15 and supports.
Structure identical with part of the prior art in the accompanying drawing will be given identical symbol.
The backflow protection device of the scroll compressor in the invention described above has following action effect.
Promptly, the supported on both sides portion 22 of above-mentioned valve plate body 20 is aimed at the vertical guide groove 15a entry end of above-mentioned valve steering channel 15, and after the axle direction propelling, rotate to circumferencial direction again along above-mentioned horizontal steering channel 15b, and it is contained among the sliding-groove 15c, realize the assembly manipulation of above-mentioned reverse stop valve by aforesaid operations.At this moment, because the height of above-mentioned horizontal steering channel 15b is lower than the valve plates face 13a of above-mentioned exhaust port 13, make at above-mentioned reverse stop valve during through above-mentioned horizontal steering channel 15b, shown in the dotted line of Fig. 6, the middle body of above-mentioned valve plate body 20 is with convexly curved, and, will recover original state, and than the higher setting of the height of above-mentioned horizontal steering channel 15b in the moment that is positioned over above-mentioned sliding-groove 15c.Promptly, be placed on the moment of the valve plates face 13a of above-mentioned sliding-groove 15c when above-mentioned valve plate body 20, compare above-mentioned horizontal steering channel 15b and exceed certain height difference h, make when above-mentioned valve plate body 20 moves up and down subsequently, can prevent that above-mentioned valve plate body 20 breaks away from above-mentioned horizontal steering channel 15b.
Wherein, when above-mentioned compressor is normally operated, shown in Fig. 7 a, the pressure of pressing chamber P is relatively higher than the pressure of discharging area S2, thus, above-mentioned valve plate body 20 will be compressed the pressurized gas of discharging among the P of chamber and promote, and make to slide in above-mentioned sliding-groove 15c and the unlatching of rising, and the pressurized gas of above-mentioned pressing chamber P then is discharged among the discharging area S2 by the space of above-mentioned unlatching is smooth and easy.
On the contrary, when the above-mentioned compressor shut-down operation or carry out abnormal pressure than when operation since pressure moment of pressing chamber P be lower than the pressure of above-mentioned discharging area S2, thereby the pressurized gas that causes discharging is desired adverse current in the pressing chamber P of relatively low pressure.At this moment, the pressurized gas that above-mentioned valve plate body 20 will be discharged from the region S 2 promotes, and shown in Fig. 6 b, above-mentioned valve plate body 20 slides downward side, make above-mentioned switching portion 21 be bonded on the valve plates face 13a of said fixing spool 10, thereby close exhaust port 13 by aforesaid operations.
Thus, integrally formed can need not other structures such as valve shell frame are set on the light board of fixing spool in conjunction with the valve supporting portion of reverse stop valve, thus accessory number and corresponding assembly manipulation can be reduced, reverse stop valve can be assembled easily by aforesaid operations, and cost of production can be reduced.
And, being combined on the valve supporting portion by supporting portion reverse stop valve, will slide in above-mentioned sliding-groove and open and close exhaust port in the supporting portion of above-mentioned reverse stop valve, thus the valve sound or the abnormal sound that produce can reduce valve opening and closing the time.
Claims (3)
1, a kind of backflow protection device of scroll compressor comprises:
Fixing spool with the spinning reel engagement and form two a pair of pressing chambers, is communicated in final pressing chamber and forms exhaust port, discharges pressurized gas to discharging the space, protrudes around the outlet side of above-mentioned exhaust port simultaneously and is formed with the valve supporting portion;
The valve plate body is slidably supported on the valve supporting portion of said fixing spool with axle direction, and opens and closes above-mentioned exhaust port by the pressing chamber and the pressure difference of discharging between the space,
Above-mentioned valve supporting portion is protruded with both fixed heights around the valve plates face of exhaust port and is formed, and within it on the side face symmetrical being recessed to form be useful on the valve steering channel that clamps the terminal of above-mentioned valve plate body and support, it is characterized in that:
Above-mentioned valve steering channel (15) comprising:
Vertical guide groove (15a), the end in valve supporting portion (14) is recessed to form with axle direction, and is used for pilot valve door-plate body (20);
Horizontal steering channel (15b) is being recessed to form with circumferencial direction more continuously from above-mentioned vertical guide groove (15a);
Sliding-groove (15c) is recessed to form with Vertical direction continuously from above-mentioned horizontal steering channel (15b), and above-mentioned valve plate body (20) axle direction is slided and opens and closes.
2, the backflow protection device of scroll compressor according to claim 1 is characterized in that:
The height that the horizontal steering channel (15b) of valve steering channel (15) is highly compared the fixing valve plates face (13a) of spool (10) is lower.
3, according to the backflow protection device of each described scroll compressor in the claim 1 to 2, it is characterized in that:
The middle body of valve plate body (20) is formed with the switching portion (21) that is used to open and close above-mentioned exhaust port, prolongs on the outer circumferential face of above-mentioned switching portion (21) to be formed with to clamp at least two supporting portions (22) that are incorporated into above-mentioned valve steering channel (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100137965A CN100532854C (en) | 2005-06-13 | 2005-06-13 | Anti-backflow device for scroll compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100137965A CN100532854C (en) | 2005-06-13 | 2005-06-13 | Anti-backflow device for scroll compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1880773A CN1880773A (en) | 2006-12-20 |
| CN100532854C true CN100532854C (en) | 2009-08-26 |
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ID=37519084
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100137965A Expired - Fee Related CN100532854C (en) | 2005-06-13 | 2005-06-13 | Anti-backflow device for scroll compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100532854C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016344B (en) * | 2008-01-16 | 2015-08-12 | 艾默生环境优化技术有限公司 | Scroll machine |
| CN103136569B (en) * | 2011-12-03 | 2015-11-25 | 鸿富锦精密工业（深圳）有限公司 | The label base of electronic tag |
| JP6013791B2 (en) * | 2012-06-12 | 2016-10-25 | 藤倉ゴム工業株式会社 | Electromagnetic diaphragm pump |
| CN106609758B (en) * | 2015-10-27 | 2019-06-11 | 丹佛斯（天津）有限公司 | Gas exhaust valve and compressor with gas exhaust valve |
| WO2020001379A1 (en) * | 2018-06-29 | 2020-01-02 | 艾默生环境优化技术(苏州)有限公司 | Damping apparatus for exhaust valve in compressor, exhaust valve assembly, and compressor |
-
2005
- 2005-06-13 CN CNB2005100137965A patent/CN100532854C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1880773A (en) | 2006-12-20 |
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