CN202718871U - Air exhausting end base of screw rod compressor - Google Patents
Air exhausting end base of screw rod compressor Download PDFInfo
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- CN202718871U CN202718871U CN 201220367883 CN201220367883U CN202718871U CN 202718871 U CN202718871 U CN 202718871U CN 201220367883 CN201220367883 CN 201220367883 CN 201220367883 U CN201220367883 U CN 201220367883U CN 202718871 U CN202718871 U CN 202718871U
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- end base
- bearing hole
- rotor bearing
- air exhausting
- utility
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Abstract
The utility model provides an air exhausting end base (100) of a screw rod compressor, comprising an end base body (10) and an air exhausting opening (3), wherein the end base body (10) is provided with a female rotor bearing hole (1) and a male rotor bearing hole (2); the air exhausting opening (3) is arranged above the female rotor bearing hole (1) and the male rotor bearing hole (2); and the air exhausting opening (3) is provided with at least one step (31). With the adoption of the structure, the energy loss of the screw rod compressor in a working process can be effectively reduced; and meanwhile, the working noises and the vibration of the screw rod compressor are lowered.
Description
Technical field
The utility model relates to a kind of compressor, relates in particular to a kind of exhausting end base of helical-lobe compressor.
Background technique
Compressor is absolutely necessary in refrigeration system.The compressor that is widely used at present mainly contains piston type, screw type, centrifugal etc.
Helical-lobe compressor is a kind of positive displacement compressor of forcing gas transmission, air-breathing, the compression that relies on that reasonable disposition on the housing is inhaled, vent ports realizes compressor, the elemental operation process of exhaust.The suction of helical-lobe compressor, vent ports position and shape have determined compression ratio in it.Desired suction, exhaust pressure during operation or in the technological process have determined the pressure outside ratio.The helical-lobe compressor of certain type inside and outside compressor in different operating environments is different than generally, that is to say that the pressure of compression end of a period is not identical with exhaust pressure, and this inside and outside pressure ratio difference has caused very large energy loss.When exhaust pressure during greater than compression end of a period pressure, air can flow back to compression chamber in the exhaust cavity, finishes the process that expands in compression; When exhaust pressure during less than compression end of a period pressure, gas need to be through overexpansion step-down process from compression chamber to the exhaust cavity.Two processes so all can be to the great loss of power generation, and inside and outside compression ratio differs larger, and this energy loss wherein is also larger.
Simultaneously, helical-lobe compressor is in compression end of a period step, and the element volume that is comprised of the asymmetric yin, yang rotor flank of tooth and exhaust end face is with after relief opening separates, and still has residual gas in the enclosed volume of the rotor flank of tooth and the formation of exhaust end face.When the yin, yang rotor, this part gas will further compress, and cause the helical-lobe compressor internal pressure unusually to raise.When the moment that is connected with intakeport, the residual high pressure gas in the enclosed volume will produce at the intakeport place noise and vibration.
In view of this, be necessary the exhausting end base of helical-lobe compressor is improved, to address the above problem.
The model utility content
The purpose of this utility model is to provide a kind of exhausting end base of helical-lobe compressor, and it can reduce the energy loss of helical-lobe compressor in its operation process effectively, reduces simultaneously operating noise and the vibration of helical-lobe compressor.
For realizing above-mentioned model utility purpose, the utility model provides a kind of exhausting end base of helical-lobe compressor, and it comprises,
The end pedestal, it is provided with female rotor bearing hole, male rotor bearing hole; And
Be arranged on the relief opening of described female rotor bearing hole and male rotor bearing hole top, it is characterized in that: at least one step is set on the described relief opening.
As further improvement of the utility model, the both sides of described step respectively are provided with a groove.
As further improvement of the utility model, the section shape of described groove and the degree of depth vertically are different.
Compared with prior art, the beneficial effects of the utility model are: the relief opening at exhausting end base arranges step, and the different groove of the degree of depth is set in the both sides of step, by such structure, the energy loss of helical-lobe compressor in its operation process be can effectively reduce, operating noise and the vibration of helical-lobe compressor reduced simultaneously.
Description of drawings
Fig. 1 is the sectional view in exhausting end base one embodiment of a kind of helical-lobe compressor of the utility model;
Fig. 2 is the amplification stereogram of the exhausting end base shown in Fig. 1.
Embodiment
Below in conjunction with each mode of execution shown in the drawings the utility model is elaborated; but should be noted that; these mode of executions are not limitation of the utility model; those of ordinary skills all belong within the protection domain of the present utility model according to these mode of execution institute work energy, method or structural equivalent transformation or alternative.
Shown in please refer to the drawing 1, Fig. 1 is the sectional view in exhausting end base one embodiment of a kind of helical-lobe compressor of the utility model.In the present embodiment, a kind of exhausting end base 100 of helical-lobe compressor, it comprises, end pedestal 10, it is provided with female rotor bearing hole 1, male rotor bearing hole 2.In this female rotor bearing hole 1, be provided with a female rotor (not shown), be provided with a male rotor (not shown) in this male rotor bearing hole 2.The male rotor drive female rotor is with air-breathing, the compression that realizes helical-lobe compressor, the elemental operation process of exhaust.
Cooperate ginseng shown in Figure 2, this exhausting end base 100 also comprises the relief opening 3 that is arranged on female rotor bearing hole 1 and male rotor bearing hole 2 top exhaust ends, and at least one step 31 is set on this relief opening 3.The shape of relief opening 3 and the refrigerating capacity of this helical-lobe compressor and noise have close relationship.
The both sides of this step 31 respectively are provided with a groove (311,312), and the section shape of two grooves (311,312) and the degree of depth vertically are different.In the present embodiment, groove 311 degree of depth vertically is greater than groove 312 degree of depth vertically; Certainly groove 311 degree of depth vertically can be arranged to less than groove 312 degree of depth vertically.
In the present embodiment, only be provided with a step 31 in this relief opening 3, two or more steps 31 also can be set certainly, and respectively be provided with a groove in the both sides of each step 31.
When enclosed volume separates with relief opening 3, the residual gas in the enclosed volume immediately with relief opening 3 in groove (311,312) communicate, and through these two grooves (311,312) drain into suction chamber, continue to raise with the gas pressure of avoiding participating in the enclosed volume, reduce noise and vibration.
In the present embodiment, also be provided with several screws 40 on this exhausting end base 100, and by the parts mutual fixings such as miscellaneous part such as motor (not shown) of screw rod (not shown) with helical-lobe compressor.
Above listed a series of detailed description only is specifying for feasibility mode of execution of the present utility model; they are not to limit protection domain of the present utility model, allly do not break away from equivalent mode of execution or the change that the utility model skill spirit does and all should be included within the protection domain of the present utility model.
To those skilled in the art, obviously the utility model is not limited to the details of above-mentioned example embodiment, and in the situation that does not deviate from spirit of the present utility model or essential characteristic, can realize the utility model with other concrete form.Therefore, no matter from which point, all should regard embodiment as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims rather than above-mentioned explanation, therefore is intended to include in the utility model dropping on the implication that is equal to important document of claim and all changes in the scope.Any reference character in the claim should be considered as limit related claim.
In addition, be to be understood that, although this specification is described according to mode of execution, but be not that each mode of execution only comprises an independently technological scheme, this narrating mode of specification only is for clarity sake, those skilled in the art should make specification as a whole, and the technological scheme among each embodiment also can through appropriate combination, form other mode of executions that it will be appreciated by those skilled in the art that.
Claims (3)
1. the exhausting end base of a helical-lobe compressor, it comprises,
End pedestal (10), it is provided with female rotor bearing hole (1), male rotor bearing hole (2); And
Be arranged on the relief opening (3) of described female rotor bearing hole (1) and male rotor bearing hole (2) top, it is characterized in that: at least one step (31) is set on the described relief opening (3).
2. exhausting end base according to claim 1, it is characterized in that: the both sides of described step (31) respectively are provided with a groove (311,312).
3. exhausting end base according to claim 2 is characterized in that, the section shape of described groove (311,312) and the degree of depth vertically are different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220367883 CN202718871U (en) | 2012-04-11 | 2012-07-27 | Air exhausting end base of screw rod compressor |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220150870.3 | 2012-04-11 | ||
| CN201220150870 | 2012-04-11 | ||
| CN 201220367883 CN202718871U (en) | 2012-04-11 | 2012-07-27 | Air exhausting end base of screw rod compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202718871U true CN202718871U (en) | 2013-02-06 |
Family
ID=47620695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220367883 Expired - Fee Related CN202718871U (en) | 2012-04-11 | 2012-07-27 | Air exhausting end base of screw rod compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202718871U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748299A (en) * | 2012-04-11 | 2012-10-24 | 无锡市制冷设备厂有限责任公司 | Air exhaust end base of screw compressor |
| CN111720309A (en) * | 2019-03-21 | 2020-09-29 | 亚台富士精机股份有限公司 | Exhaust structure suitable for pumping machine and pumping machine |
-
2012
- 2012-07-27 CN CN 201220367883 patent/CN202718871U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102748299A (en) * | 2012-04-11 | 2012-10-24 | 无锡市制冷设备厂有限责任公司 | Air exhaust end base of screw compressor |
| CN111720309A (en) * | 2019-03-21 | 2020-09-29 | 亚台富士精机股份有限公司 | Exhaust structure suitable for pumping machine and pumping machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130206 Termination date: 20180727 |
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| CF01 | Termination of patent right due to non-payment of annual fee |