CN204299877U - A kind of axial seal structure for screw compressor - Google Patents
A kind of axial seal structure for screw compressor Download PDFInfo
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- CN204299877U CN204299877U CN201420677757.XU CN201420677757U CN204299877U CN 204299877 U CN204299877 U CN 204299877U CN 201420677757 U CN201420677757 U CN 201420677757U CN 204299877 U CN204299877 U CN 204299877U
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- cavity
- pore channels
- seal structure
- screw compressor
- axial seal
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Abstract
The utility model relates to a kind of axial seal structure for screw compressor.Its objective is and a kind of axial seal structure for screw compressor is provided, dynamic and static dish can either be made to realize sealing, mechanical loss can be reduced to greatest extent again, increase the service life, improve mechanical efficiency.A kind of axial seal structure for screw compressor, quiet dish is located at below high gland, Moving plate is located at above frame, described quiet dish and Moving plate cooperatively interact, cavity between described high gland and quiet dish is separated into the first cavity being positioned at connecting portion inside and the second cavity being positioned at connecting portion outside by the connecting portion of described high gland and quiet dish, the 3rd cavity is formed between described Moving plate and frame, described first cavity is communicated with by buck channel with the 3rd cavity, described 3rd cavity is communicated with a pressure release pore channels penetrating described quiet dish, described pressure release pore channels is by back pressure maintaining body and the second cavity connects.
Description
Technical field
The utility model relates to screw compressor and manufactures processing technique field, specifically, relates to a kind of axial seal structure for screw compressor.
Background technology
Swirl type cold compressor started in recent years to enter universal a kind of refrigeration compressor, it have operate steadily, volumetric efficiency is high, mechanical efficiency is high, the life-span is long, the feature of failure rate is low, the control of the humiture in the environment such as family, office space, vehicle is widely used in by its supporting air-conditioning system, especially in vehicle application aspect, traditional piston type, rotary blade type compressor is substituted gradually.
The actuator of scroll compressor is dynamic and static dish, and wherein quiet dish remains static in the running of compressor all the time as fixture, and Moving plate then does point-device revolution.Dynamic and static dish needs in radial and axial realization sealing in compression process, otherwise can cause the leakage of Compressed Gas that compressor cannot normally be worked.On conventional art, the mode of axial seal many employings sealing ring of the dynamic and static dish of screw compressor, is namely provided with the sealing ring of hermetic seal effect at the top of dynamic and static dish vortex lines.
As shown in Figure 1, quiet dish 1 realizes coordinating with Moving plate 2.Realize the sealing of Moving plate 2 end face and quiet dish 1 bottom surface in the groove that sealing ring 5 is installed on Moving plate 2 vortex lines top, line style is identical with vortex lines.Realize the sealing of quiet dish 1 end face and Moving plate 2 bottom surface in the groove that sealing ring 5 is installed on quiet dish 1 vortex lines top, line style is identical with vortex lines.Quiet dish 1 clamps with Moving plate 2 with high gland 4 by frame 3.
Prior art as above, sealing ring has certain elasticity, sealing can be realized within the specific limits, but its maximum shortcoming is serious wear, because Moving plate does not directly contact with quiet dish, cause leakage to produce when namely losing sealing function after seal wears, therefore its service life is relatively short.And if remove sealing ring, dynamic and static dish is fully clamped, then can produce severe friction, cause dynamic and static dish to be engaged and lost efficacy, thus dynamic and static dish is lax directly causes leakage.
Utility model content
The purpose of this utility model is to provide a kind of axial seal structure for screw compressor, dynamic and static dish can either be made to realize sealing, can reduce mechanical loss to greatest extent again, increase the service life, improve mechanical efficiency.
The purpose of this utility model is achieved in that
A kind of axial seal structure for screw compressor, quiet dish is located at below high gland, Moving plate is located at above frame, described quiet dish and Moving plate cooperatively interact, cavity between described high gland and quiet dish is separated into the first cavity being positioned at connecting portion inside and the second cavity being positioned at connecting portion outside by the connecting portion of described high gland and quiet dish, the 3rd cavity is formed between described Moving plate and frame, described first cavity is communicated with by buck channel with the 3rd cavity, described 3rd cavity is communicated with a pressure release pore channels penetrating described quiet dish, described pressure release pore channels is by back pressure maintaining body and the second cavity connects.
Compressor operationally, start and initially can produce an initial high pressure gas in the first cavity, gas in the first cavity is made to be in high pressure conditions, gases at high pressure enter the 3rd cavity from the first cavity after buck channel decompression, pressure condition during post-decompression gas is in the 3rd cavity, along with the operation of compressor, the pressure of the initial gases at high pressure in the first cavity increases gradually, the gas pressure in the 3rd cavity is caused to increase gradually, the axial contact force of Moving plate and quiet dish is increased, when pressure is increased to a certain degree, gas in 3rd cavity enters the second cavity from pressure release pore channels through back pressure maintaining body, realize the pressure release of gas in the 3rd cavity, pressure release is to time to a certain degree, back pressure maintaining body is closed, stop pressure release, gas in the 3rd cavity is made to remain on a constant pressure state, thus make, quiet dish keeps flexible sealing.
As a kind of embodiment, described buck channel is a throttling micro hole passage penetrating described quiet dish, described throttling micro hole channel connection first cavity and the 3rd cavity.Described throttling micro hole passage by together tiltedly throttling micro hole passage and together with vertical throttling micro hole passage form.Wherein, the aperture of described throttling micro hole passage is 0.3mm ~ 1.0mm.
As another kind of embodiment, described buck channel comprises: between described Moving plate and frame, be provided with a buffer substrate tablet, described buffer substrate tablet is provided with a deep-slotted chip breaker in a circumferential direction, described deep-slotted chip breaker and the 3rd cavity connects, described first cavity is communicated with the pore channels penetrating described quiet dish by between deep-slotted chip breaker.Described pore channels by together tiltedly pore channels and together with vertical pore channels form.Wherein, the aperture of described pore channels is 3mm ~ 5mm.Gases at high pressure in first cavity are not directly enter the second cavity by pore channels, but enter buffer substrate tablet deep-slotted chip breaker in a circumferential direction by pore channels, the second cavity is entered after deep-slotted chip breaker step-down throttling, reach antihypertensive effect equally, but the aperture of pore channels relatively can be comparatively large, reduces the requirement to processing technology.
Described back pressure maintaining body comprises: the spring be located at a steel ball in the exit of described pressure release pore channels, be located at an oil extraction pin at the second cavity entrance place and be located between described steel ball and oil extraction pin, the diameter of described steel ball, slightly larger than the aperture of pressure release pore channels, described oil extraction pin has pore or air drain that supplied gas passes through.Wherein, described pressure release pore channels can be the hole of circular hole, square hole or other shape, and aperture is 1mm ~ 3mm, and the diameter of described steel ball is 1.5mm ~ 5mm, and the wire diameter of described spring is 0.1mm ~ 0.8mm.
Further, filter screen is provided with before described pressure release pore channels.Filter screen can be cylindrical shape, taper shape, square or other shape, and its diameter, from 3mm-6mm, meets before gas enters pressure release pore channels and carries out filtering.
The utility model is owing to have employed technique scheme, compared with prior art there is following beneficial effect: the axial seal structure for screw compressor provided by the utility model can make to realize flexible sealing between Moving plate and quiet dish, reduce mechanical loss to greatest extent, and the surface of Moving plate and quiet dish all have passed through Wear-resistant Treatment, along with the use of compressor, although still there will be trace wearing and tearing, but Moving plate can continue to keep closely sealed with quiet coiling, substantially prolongs the service life of product, improve mechanical efficiency.
Accompanying drawing explanation
By following embodiment of the present utility model and description taken together with the accompanying drawings, other advantage of the present utility model and feature are shown, this embodiment provides by way of example, but is not limited to this, wherein:
Fig. 1 is the structural representation for the axial seal structure of screw compressor in prior art.
Fig. 2 is the structural representation of the utility model for a preferred embodiment of the axial seal structure of screw compressor.
Fig. 3 is the structural representation of the utility model for another preferred embodiment of the axial seal structure of screw compressor.
Fig. 4 is the structural representation of buffer substrate tablet in embodiment shown in Fig. 3.
Detailed description of the invention
The axial seal structure for screw compressor as shown in Figure 2, quiet dish 1 and Moving plate 2 cooperatively interact, quiet dish 1 is located at below high gland 4, cavity between high gland 4 and quiet dish 1 is separated into the first cavity 7 being positioned at connecting portion 41 inside and the second cavity 8 being positioned at connecting portion outside by the connecting portion 41 of high gland 4 and quiet dish 1, Moving plate 2 is located at above frame 3, forms the 3rd cavity 9 between Moving plate 2 and frame 3.
Wherein, quiet dish 1 offers one and penetrated the throttling micro hole passage 11 of quiet dish 1, throttling micro hole passage 11 by together tiltedly throttling micro hole passage 111 and together with vertical throttling micro hole passage 112 form, the first cavity 7 is communicated with by throttling micro hole passage 11 with the 3rd cavity 9.The aperture of throttling micro hole passage 11 is preferably 0.3mm ~ 1.0mm.
Separately, quiet dish 1 also offers one and penetrated the pressure release pore channels 12 of quiet dish 1.Before pressure release pore channels 12, be provided with filter screen 10, filter screen 10 can be cylindrical shape, taper shape, square or other shape, and its diameter, from 3mm ~ 6mm, meets before gas enters pressure release pore channels 12 and carries out filtering.Pressure release pore channels 12 one end is communicated with the 3rd cavity 9, and the other end is connected with back pressure maintaining body 6, realizes being communicated with of the 3rd cavity 9 and the second cavity 8 by back pressure maintaining body 6.Back pressure maintaining body 6 comprises a steel ball 61 in the exit being located at pressure release pore channels 12, the oil extraction pin 63 being located at the second cavity 8 porch and the spring 62 be located between steel ball 61 and oil extraction pin 63, the diameter of steel ball 61, slightly larger than the aperture of pressure release pore channels 12, oil extraction pin 63 has pore or air drain that supplied gas passes through.Wherein, pressure release pore channels 12 can be the hole of circular hole, square hole or other shape, and aperture is preferably 1mm ~ 3mm, and the diameter of steel ball 61 is preferably 1.5mm ~ 5mm, and the wire diameter of spring 62 is 0.1mm ~ 0.8mm.
The axial seal structure for screw compressor as shown in Figure 3, quiet dish 1 and Moving plate 2 cooperatively interact, quiet dish 1 is located at below high gland 4, cavity between high gland 4 and quiet dish 1 is separated into the first cavity 7 being positioned at connecting portion 41 inside and the second cavity 8 being positioned at connecting portion outside by the connecting portion 41 of high gland 4 and quiet dish 1, Moving plate 2 is located at above frame 3, forms the 3rd cavity 9 between Moving plate 2 and frame 3.
Wherein, a buffer substrate tablet 23 is provided with between Moving plate 2 and frame 3, buffer substrate tablet 23 is provided with a deep-slotted chip breaker 231 (shown in composition graphs 4) in a circumferential direction, deep-slotted chip breaker 231 is communicated with the 3rd cavity 9, and the first cavity 7 is communicated with the pore channels 11 ' penetrating quiet dish 1 by between deep-slotted chip breaker 231.Pore channels 11 ' by together tiltedly pore channels 111 ' and together with vertical pore channels 112 ' form.The aperture of pore channels 11 ' can be 3mm ~ 5mm.
Separately, quiet dish 1 also offers one and penetrated the pressure release pore channels 12 of quiet dish 1.Before pressure release pore channels 12, be provided with filter screen 10, filter screen 10 can be cylindrical shape, taper shape, square or other shape, and its diameter, from 3mm ~ 6mm, meets before gas enters pressure release pore channels 12 and carries out filtering.Pressure release pore channels 12 one end is communicated with the 3rd cavity 9, and the other end is connected with back pressure maintaining body 6, realizes being communicated with of the 3rd cavity 9 and the second cavity 8 by back pressure maintaining body 6.Back pressure maintaining body 6 comprises a steel ball 61 in the exit being located at pressure release pore channels 12, the oil extraction pin 63 being located at the second cavity 8 porch and the spring 62 be located between steel ball 61 and oil extraction pin 63, the diameter of steel ball 61, slightly larger than the aperture of pressure release pore channels 12, oil extraction pin 63 has pore or air drain that supplied gas passes through.Wherein, pressure release pore channels 12 can be the hole of circular hole, square hole or other shape, and aperture is preferably 1mm ~ 3mm, and the diameter of steel ball 61 is preferably 1.5mm ~ 5mm, and the wire diameter of spring 62 is 0.1mm ~ 0.8mm.
Although the utility model is illustrated hereinbefore according to preferred embodiment, but this does not represent that scope of the present utility model is confined to above-mentioned structure, as long as the equivalent substitution structure that those skilled in the art can develop easily after reading above-mentioned explanation, the equalization done under the spirit not departing from the utility model and scope changes and modifies, and all should be covered by within the utility model the scope of the claims.
Claims (10)
1. the axial seal structure for screw compressor, quiet dish is located at below high gland, Moving plate is located at above frame, described quiet dish and Moving plate cooperatively interact, it is characterized in that: the cavity between described high gland and quiet dish is separated into the first cavity being positioned at connecting portion inside and the second cavity being positioned at connecting portion outside by the connecting portion of described high gland and quiet dish, the 3rd cavity is formed between described Moving plate and frame, described first cavity is communicated with by buck channel with the 3rd cavity, described 3rd cavity is communicated with a pressure release pore channels penetrating described quiet dish, described pressure release pore channels is by back pressure maintaining body and the second cavity connects.
2., as claimed in claim 1 for the axial seal structure of screw compressor, it is characterized in that: described buck channel is a throttling micro hole passage penetrating described quiet dish, described throttling micro hole channel connection first cavity and the 3rd cavity.
3., as claimed in claim 2 for the axial seal structure of screw compressor, it is characterized in that: described throttling micro hole passage by together tiltedly throttling micro hole passage and together with vertical throttling micro hole passage form.
4., as claimed in claim 2 or claim 3 for the axial seal structure of screw compressor, it is characterized in that: the aperture of described throttling micro hole passage is 0.3mm ~ 1.0mm.
5. as claimed in claim 1 for the axial seal structure of screw compressor, it is characterized in that, described buck channel comprises: between described Moving plate and frame, be provided with a buffer substrate tablet, described buffer substrate tablet is provided with a deep-slotted chip breaker in a circumferential direction, described deep-slotted chip breaker and the 3rd cavity connects, described first cavity is communicated with the pore channels penetrating described quiet dish by between deep-slotted chip breaker.
6., as claimed in claim 5 for the axial seal structure of screw compressor, it is characterized in that: described pore channels by together tiltedly pore channels and together with vertical pore channels form.
7. the axial seal structure for screw compressor as described in claim 5 or 6, is characterized in that: the aperture of described pore channels is 3mm ~ 5mm.
8. as claimed in claim 1 for the axial seal structure of screw compressor, it is characterized in that, described back pressure maintaining body comprises: the spring be located at a steel ball in the exit of described pressure release pore channels, be located at an oil extraction pin at the second cavity entrance place and be located between described steel ball and oil extraction pin, the diameter of described steel ball, slightly larger than the aperture of pressure release pore channels, described oil extraction pin has pore or air drain that supplied gas passes through.
9., as claimed in claim 8 for the axial seal structure of screw compressor, it is characterized in that: the aperture of described pressure release pore channels is 1mm ~ 3mm, the diameter of described steel ball is 1.5mm ~ 5mm, and the wire diameter of described spring is 0.1mm ~ 0.8mm.
10., as claimed in claim 1 for the axial seal structure of screw compressor, it is characterized in that: before described pressure release pore channels, be provided with filter screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420677757.XU CN204299877U (en) | 2014-11-13 | 2014-11-13 | A kind of axial seal structure for screw compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420677757.XU CN204299877U (en) | 2014-11-13 | 2014-11-13 | A kind of axial seal structure for screw compressor |
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| Publication Number | Publication Date |
|---|---|
| CN204299877U true CN204299877U (en) | 2015-04-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420677757.XU Expired - Fee Related CN204299877U (en) | 2014-11-13 | 2014-11-13 | A kind of axial seal structure for screw compressor |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114304A (en) * | 2015-09-18 | 2015-12-02 | 苏州中成汽车空调压缩机有限公司 | Scroll plate component and scroll compressor comprising same |
| CN105822547A (en) * | 2016-05-05 | 2016-08-03 | 珠海格力节能环保制冷技术研究中心有限公司 | Scroll compressor |
| WO2019148546A1 (en) * | 2018-01-31 | 2019-08-08 | 苏州优德通力科技有限公司 | Seal combination device for shaft |
| CN113482919A (en) * | 2021-08-05 | 2021-10-08 | 珠海格力节能环保制冷技术研究中心有限公司 | Scroll compressor's seal structure, scroll compressor and air conditioner |
| CN113701957A (en) * | 2021-08-27 | 2021-11-26 | 重庆建设车用空调器有限责任公司 | Detection apparatus for about sealing washer sealing performance |
-
2014
- 2014-11-13 CN CN201420677757.XU patent/CN204299877U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114304A (en) * | 2015-09-18 | 2015-12-02 | 苏州中成汽车空调压缩机有限公司 | Scroll plate component and scroll compressor comprising same |
| CN105822547A (en) * | 2016-05-05 | 2016-08-03 | 珠海格力节能环保制冷技术研究中心有限公司 | Scroll compressor |
| CN105822547B (en) * | 2016-05-05 | 2018-04-27 | 珠海格力节能环保制冷技术研究中心有限公司 | Screw compressor |
| WO2019148546A1 (en) * | 2018-01-31 | 2019-08-08 | 苏州优德通力科技有限公司 | Seal combination device for shaft |
| CN113482919A (en) * | 2021-08-05 | 2021-10-08 | 珠海格力节能环保制冷技术研究中心有限公司 | Scroll compressor's seal structure, scroll compressor and air conditioner |
| CN113701957A (en) * | 2021-08-27 | 2021-11-26 | 重庆建设车用空调器有限责任公司 | Detection apparatus for about sealing washer sealing performance |
| CN113701957B (en) * | 2021-08-27 | 2023-08-25 | 重庆建设车用空调器有限责任公司 | Detection device for sealing performance of sealing ring |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150429 Termination date: 20211113 |