CN102748299A - Air exhaust end base of screw compressor - Google Patents
Air exhaust end base of screw compressor Download PDFInfo
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- CN102748299A CN102748299A CN2012102634074A CN201210263407A CN102748299A CN 102748299 A CN102748299 A CN 102748299A CN 2012102634074 A CN2012102634074 A CN 2012102634074A CN 201210263407 A CN201210263407 A CN 201210263407A CN 102748299 A CN102748299 A CN 102748299A
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- end base
- bearing hole
- rotor bearing
- air exhaust
- helical
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Abstract
The invention provides an air exhaust end base (100) of a screw compressor. The air exhaust end base comprises an end base body (10) and an air exhaust outlet (3), wherein the end base body is provided with a female rotor bearing hole (1) and a male rotor bearing hole (2); and the air exhaust outlet is arranged above the female rotor bearing hole (1) and the male rotor bearing hole (2) and is provided with at least a step (31). By dint of an above-mentioned structure, energy consumption of the screw compressor in a task procedure can be reduced effectively; simultaneously, working noise and vibration of the screw compressor are reduced.
Description
Technical field
The present invention relates to a kind of compressor, relate 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 the different operation environment is different than generally, that is to say that the pressure and the exhaust pressure of compression end of a period is inequality, and this inside and outside pressure ratio difference has caused very big energy loss.When exhaust pressure during greater than compression end of a period pressure, air can flow backwards to compression chamber in the exhaust cavity, accomplishes the process that expands in compression; When exhaust pressure during less than compression end of a period pressure, gas need be through overexpansion step-down process from compression chamber to the exhaust cavity.Two processes so all can produce great loss to energy, and it is big more that inside and outside compression ratio differs, and this energy loss wherein is also big more.
Simultaneously, helical-lobe compressor is in compression end of a period step, and the element volume of being made up of the asymmetric yin, yang rotor flank of tooth and exhaust end face still has residual gas with after relief opening separates in the enclosed volume of the rotor flank of tooth and the formation of exhaust end face.When the yin, yang rotor rotates, this part gas will further compress, and cause the helical-lobe compressor internal pressure to raise unusually.When the moment that is connected with intakeport, the residual high pressure gas in the enclosed volume will produce noise and vibration at the intakeport place.
In view of this, be necessary the exhausting end base of helical-lobe compressor is improved, to address the above problem.
Summary of the invention
The object of the present invention is to provide a kind of exhausting end base of helical-lobe compressor, it can reduce the energy loss of helical-lobe compressor in its operation process effectively, reduces the operating noise and the vibration of helical-lobe compressor simultaneously.
Be to realize the foregoing invention purpose, the present invention 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 said female rotor bearing hole and male rotor bearing hole top, it is characterized in that: at least one step is set on the said relief opening.
As further improvement of the present invention, the both sides of said step respectively are provided with a groove.
As further improvement of the present invention, the section shape of said groove and the degree of depth vertically are different.
Compared with prior art; The invention has the beneficial effects as follows: on the relief opening of exhausting end base, step is set; And degree of depth different recesses is set in the both sides of step; Through such structure, can reduce the energy loss of helical-lobe compressor in its operation process effectively, reduce the operating noise and the vibration of helical-lobe compressor 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 present invention;
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 present invention is elaborated; But should be noted that; These mode of executions are not limitation of the present invention; The function that those of ordinary skills do according to these mode of executions, method, or structural equivalent transformation or substitute all belong within protection scope of the present invention.
Please join shown in Figure 1ly, Fig. 1 is the sectional view in exhausting end base one embodiment of a kind of helical-lobe compressor of the present invention.In this mode of execution, 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 confidential relation.
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 this mode of execution, groove 311 degree of depth vertically is greater than groove 312 degree of depth vertically; Certainly can groove 311 degree of depth vertically be arranged to less than groove 312 degree of depth vertically.
In this mode of execution, 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, reduce noise and vibration with the gas pressure of avoiding participating in the enclosed volume.
In this mode of execution, also be provided with several screws 40 on this exhausting end base 100, and the motor mutual fixings of parts such as (not shown) for example of the miscellaneous part through screw rod (not shown) and helical-lobe compressor.
The listed a series of detailed description of preceding text only is specifying to feasibility mode of execution of the present invention; They are not in order to restriction protection scope of the present invention, allly do not break away from equivalent mode of execution or the change that skill of the present invention spirit done and all should be included within protection scope of the present invention.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned example embodiment, and under the situation that does not deviate from spirit of the present invention or essential characteristic, can realize the present invention with other concrete form.Therefore; No matter from which point; All should regard embodiment as exemplary; And be nonrestrictive, scope of the present invention is limited accompanying claims rather than above-mentioned explanation, therefore is intended to the implication of the equivalents that drops on claim and all changes in the scope are included in the present invention.Should any reference character in the claim be regarded as limit related claim.
In addition; Describing according to mode of execution though should be appreciated that this specification, is 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 form other mode of executions that it will be appreciated by those skilled in the art that through appropriate combination.
Claims (3)
1. the exhausting end base of a helical-lobe compressor (100), 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 said 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 said relief opening (3).
2. exhausting end base according to claim 1 (100) is characterized in that: the both sides of said step (31) respectively are provided with a groove (311), (312).
3. exhausting end base according to claim 2 (100) is characterized in that, the section shape of said groove (311), (312) and the degree of depth vertically are different.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102634074A CN102748299A (en) | 2012-04-11 | 2012-07-27 | Air exhaust end base of screw compressor |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210104747 | 2012-04-11 | ||
| CN201210104747.2 | 2012-04-11 | ||
| CN2012102634074A CN102748299A (en) | 2012-04-11 | 2012-07-27 | Air exhaust end base of screw compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102748299A true CN102748299A (en) | 2012-10-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102634074A Pending CN102748299A (en) | 2012-04-11 | 2012-07-27 | Air exhaust end base of screw compressor |
Country Status (1)
| Country | Link |
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| CN (1) | CN102748299A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104501A (en) * | 2012-11-15 | 2013-05-15 | 福建雪人压缩机科技有限公司 | Low-noise lead compressor exhaust end base |
| CN109268273A (en) * | 2018-09-17 | 2019-01-25 | 广东葆德科技有限公司 | A kind of exhaust structure of water-lubricated compressor |
| CN117469163A (en) * | 2023-10-25 | 2024-01-30 | 江森自控日立万宝空调(广州)有限公司 | Control method and control unit of variable-frequency screw compressor with adjustable pressure ratio |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2474653A (en) * | 1945-04-26 | 1949-06-28 | Jarvis C Marble | Helical gear compressor or motor |
| JPH09291891A (en) * | 1996-04-26 | 1997-11-11 | Hitachi Ltd | Screw compressor |
| US20040013555A1 (en) * | 2002-07-22 | 2004-01-22 | Jianping Zhong | Discharge porting design for screw compressor |
| CN101514702A (en) * | 2009-03-23 | 2009-08-26 | 上海汉钟精机股份有限公司 | Screw compressor |
| CN201344131Y (en) * | 2009-01-22 | 2009-11-11 | 中国船舶重工集团公司第七一一研究所 | Air exhaust end seat with variable internal compression ratio for screw compressor |
| JP2010275995A (en) * | 2009-06-01 | 2010-12-09 | Hitachi Plant Technologies Ltd | Screw compressor |
| JP2011021535A (en) * | 2009-07-15 | 2011-02-03 | Hitachi Appliances Inc | Screw compressor |
| CN202718871U (en) * | 2012-04-11 | 2013-02-06 | 无锡市制冷设备厂有限责任公司 | Air exhausting end base of screw rod compressor |
-
2012
- 2012-07-27 CN CN2012102634074A patent/CN102748299A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2474653A (en) * | 1945-04-26 | 1949-06-28 | Jarvis C Marble | Helical gear compressor or motor |
| JPH09291891A (en) * | 1996-04-26 | 1997-11-11 | Hitachi Ltd | Screw compressor |
| US20040013555A1 (en) * | 2002-07-22 | 2004-01-22 | Jianping Zhong | Discharge porting design for screw compressor |
| CN1556899A (en) * | 2002-07-22 | 2004-12-22 | 开利公司 | Discharge porting design for screw compressor |
| CN201344131Y (en) * | 2009-01-22 | 2009-11-11 | 中国船舶重工集团公司第七一一研究所 | Air exhaust end seat with variable internal compression ratio for screw compressor |
| CN101514702A (en) * | 2009-03-23 | 2009-08-26 | 上海汉钟精机股份有限公司 | Screw compressor |
| JP2010275995A (en) * | 2009-06-01 | 2010-12-09 | Hitachi Plant Technologies Ltd | Screw compressor |
| JP2011021535A (en) * | 2009-07-15 | 2011-02-03 | Hitachi Appliances Inc | Screw compressor |
| CN202718871U (en) * | 2012-04-11 | 2013-02-06 | 无锡市制冷设备厂有限责任公司 | Air exhausting end base of screw rod compressor |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103104501A (en) * | 2012-11-15 | 2013-05-15 | 福建雪人压缩机科技有限公司 | Low-noise lead compressor exhaust end base |
| CN109268273A (en) * | 2018-09-17 | 2019-01-25 | 广东葆德科技有限公司 | A kind of exhaust structure of water-lubricated compressor |
| CN117469163A (en) * | 2023-10-25 | 2024-01-30 | 江森自控日立万宝空调(广州)有限公司 | Control method and control unit of variable-frequency screw compressor with adjustable pressure ratio |
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Application publication date: 20121024 |