CN1800646A - Apparatus for preventing gas reflux of vortex compressor - Google Patents
Apparatus for preventing gas reflux of vortex compressor Download PDFInfo
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- CN1800646A CN1800646A CN 200510004013 CN200510004013A CN1800646A CN 1800646 A CN1800646 A CN 1800646A CN 200510004013 CN200510004013 CN 200510004013 CN 200510004013 A CN200510004013 A CN 200510004013A CN 1800646 A CN1800646 A CN 1800646A
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- discharge pipe
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- seal container
- scroll
- fixed scroll
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Abstract
The invention relates to a gas anti-back device of whorl compressor, which comprises a sealing container with discharging pipe while the gas is discharged by said discharging pipe; a fixed whorl element fixed inside said sealing container; a rotational whorl element rotationally connected with said fixed whorl element to compress the gas; and a gas anti-back device for preventing the gas discharged by said discharging pipe back. In the operation of compressor, the gas compressed by the rotation of fixed whorl element and rotational whorl element is discharged to the discharging pipe stably via the sealing container and it can avoid the discharged gas back to the sealing container when the compressor is stopped.
Description
Technical field
The present invention relates to scroll compressor, more specifically, relate to the device that is used to prevent gas reflux of vortex compressor, it can prevent after compression unit is compressed, by discharge pipe row to the gas backstreaming of condenser in compressor, that is, be back in the seal container.
Background technique
Usually, compressor is transformed into kinetic energy with electric energy, by kinetic energy compression refrigeration gas.Compressor is the central factor that constitutes refrigerating circulation system, according to compressing mechanism, various compressors is arranged, for example rotary compressor, scroll compressor, reciprocal compressor or the like.These compressors are used for refrigerator, air-conditioning, show cabinet or the like.
Scroll compressor comprises the motor unit that produces rotating force; With when receiving the driving force of motor unit, owing to revolution scroll (orbiting scroll) is turned round the compression unit that sucks, compresses and discharge gas with fixed scroll (fixed scroll) with engaging.
Fig. 1 is a longitudinal sectional view, mainly represents the compression unit of general scroll compressor.
As shown, the compression unit of scroll compressor comprises: be installed in the fixed scroll 30 in the seal container 10, it separates certain distance with the mainframe 20 that is installed in the seal container 10; Revolution scroll 40 between fixed scroll 30 and mainframe 20, it turns round with described fixed scroll 30 with engaging; At the European ring (Oldham ring) 50 that turns round between scroll 40 and the mainframe 20, be used for preventing to turn round the rotation of scroll 40; Be attached to the demarcation strip 11 of fixed scroll 30 and seal container 10, be used for the inside of seal container 10 is separated into high-pressure area (H) and area of low pressure (L); With the valve assembly 60 of the upper surface that is installed in fixed scroll 30, be used for opening and closing the discharge orifice 31 that is formed at fixed scroll 30 places.
Revolution scroll 40 is connected to the eccentric part 71 of running shaft 70, and running shaft 70 inserts mainframe 20.
The work of compression unit that now description is had the scroll compressor of this structure.
At first, when running shaft 70 rotated at the rotating force of receiving motor unit, the revolution scroll 40 of eccentric part 71 that is attached to running shaft was around the center steering of running shaft 70, because European ring 50, and revolution scroll 40 revolutions and do not carry out rotation.
Rotation motion according to revolution scroll 40, the volute 41 of revolution scroll 40 turns round with the volute 32 of fixed scroll 30 with engaging, so that a plurality of compression chambers (P) that formed by the volute 32 of revolution volute 41 of scroll 40 and fixed scroll 30 move towards fixed scroll 30 and the central part that turns round scroll 40, change their volume simultaneously, thus in compression chamber pressurized gas.The gas of compression is discharged by the discharge orifice 31 of fixed scroll 30 in compression chamber (P).
The high temperature and high pressure gas that discharge orifice 31 by fixed scroll is discharged is discharged to seal container 10 outsides by discharge pipe 13 then through high-pressure area (H).The high temperature and high pressure gas of discharging by the discharge pipe 13 of scroll compressor flows to the condenser (not shown) that is connected with discharge pipe 13.
Simultaneously, the refrigerating circulation system that comprises scroll compressor generally is installed on the air-conditioning.In this refrigerating circulation system, from High Temperature High Pressure refrigerant gas process condenser, capillary tube and the vaporizer of compressor discharge.
Yet, scroll compressor with this structure is imperfect, because when refrigerating circulation system shuts down, 13 rows can reflux and be introduced in the seal container 10 to the gas of condenser by discharge pipe, and wherein discharge pipe 13 is connected to the seal container 10 of scroll compressor.Like this, in the running again of scroll compressor, compression efficiency has reduced.
Summary of the invention
Thereby target of the present invention provides a kind of device that prevents the gas backstreaming of scroll compressor, after it can prevent to be compressed in compressor, by discharge pipe row to the gas backstreaming of condenser in compressor, that is, be back in the seal container.
In order to realize these and other advantage, according to purpose of the present invention,, provide a kind of device that prevents the gas backstreaming of scroll compressor as in this enforcement and broadly described, comprising: be provided with the seal container of discharge pipe, gas is discharged by this discharge pipe; Be combined in the fixed scroll in the described seal container regularly; The revolution scroll, its with the ground revolution of described fixed scroll interlocking with together with the fixed scroll pressurized gas; Backflow prevention device with the gas backstreaming that prevents to discharge by described discharge pipe.
From the detailed description of the present invention being carried out below in conjunction with accompanying drawing, aforementioned and other target of the present invention, feature, aspect and advantage will become more obvious.
Description of drawings
Accompanying drawing is involved further to be understood the present invention to provide, and is merged in a unit that constitutes this specification in this specification, and accompanying drawing is represented embodiments of the present invention, and it is used for illustrating principle of the present invention with specification.
In the accompanying drawings:
Fig. 1 is a sectional view, represents the compression unit of traditional scroll compressor;
Fig. 2 is the sectional view of a compressor unit, and this compressor unit is provided with the device that prevents gas reflux of vortex compressor according to one embodiment of the present invention;
Fig. 3 and 4 is front cross sectional view and sectional view, and expression is according to the device that prevents gas reflux of vortex compressor of one embodiment of the present invention;
Fig. 5 and 6 is front cross sectional view and sectional view, represents the improvement example of a valve chest and a safety check, and described valve chest and safety check constitute according to the device that prevents gas reflux of vortex compressor of the present invention;
Fig. 7 is a sectional view, the device that prevents gas reflux of vortex compressor of expression another mode of execution according to the present invention;
Fig. 8 and 9 is sectional views, and each figure represents the working state that prevents the device of gas reflux of vortex compressor according to of the present invention.
Embodiment
In detail with reference to preferred implementation of the present invention, its example is shown in the drawings now.
Fig. 2 is the sectional view of the compression unit of a scroll compressor of main expression, and this scroll compressor is provided with the device that prevents gas backstreaming according to one embodiment of the present invention, and identical reference character is represented identical with conventional art or corresponding part.
As shown, scroll compressor comprises: be installed in the fixed scroll 30 in the seal container 10, it separates certain distance with the mainframe 20 that is installed in the seal container 10; Revolution scroll 40 between fixed scroll 30 and mainframe 20, it turns round with fixed scroll 30 with engaging; At the European ring 50 that turns round between scroll 40 and the mainframe 20, be used for preventing to turn round the rotation of scroll 40; Be attached to the demarcation strip 11 of fixed scroll 30 and seal container 10, be used for the inside of seal container 10 is separated into high-pressure area (H) and area of low pressure (L); With the valve assembly 60 of the upper surface that is installed in fixed scroll 30, be used for opening or closing the discharge orifice 31 that is formed at fixed scroll 30 places.
Revolution scroll 40 is connected to the eccentric part 71 of running shaft 70, and running shaft 70 inserts mainframe 20.
These structures are with above-described identical.
In addition, provide and prevented the gas backstreaming of the discharging backflow prevention device in the seal container 10 by discharge pipe 13.
By the pressure reduction between seal container 10 and the discharge pipe 13, the backflow prevention device opens or closes discharge pipe 13.
As shown in Fig. 3 and 4, the backflow prevention device comprises: valve chest 80, and it has the inner passage of reservation shape and is combined in regularly in the seal container 10, allows the inner passage to be communicated with discharge pipe 13; With safety check 90, it inserts in the valve chest 80 movably, is used for opening or closing the inner passage by pressure reduction.
Valve chest 80 is provided with cylindrical part 81, and cylindrical part 81 forms the drum with certain-length and internal diameter, and is attached to the inwall of seal container 10 in the one side; Shielding part 82 is used for hiding a side of cylindrical part 81; With through hole 83, it is formed on the shielding part 82 with penetrating, is opened or closed by safety check 90.
Preferably, the internal diameter of cylindrical part 81 is greater than the internal diameter of discharge pipe 13, and the internal diameter of through hole 83 is identical with the internal diameter of discharge pipe 13.
Open/close portion 91 forms has certain thickness dish type, and its external diameter is greater than the internal diameter of through hole 83, less than shielding part 82.Preferably, form three apart from holding part 92 and to make between them be regular at interval.
As for valve chest 80, the end face of cylindrical part 81 contacts with the inwall of seal container 10, and the inlet side of discharge pipe 13 is positioned at cylindrical part 81.Preferably, the Sealing (not shown) inserts between the inwall of valve chest 80 and seal container 10, and the inside of valve chest 80 and through hole 83 form the inner passage.
Safety check 90 inserts in the valve chest 80, and it is apart from the inwall of holding part 92 positions towards seal container 10, and its open/close portion 91 positions are towards shielding part 82.At this moment, each contacts the inner peripheral wall of cylindrical part 81 slidably apart from the side surface of holding part 92.
As the improvement example of valve chest 80 and safety check 90, as shown in Fig. 5 and 6, two that have formed safety check apart from holding part 92, and the guiding boss 84 with certain altitude and length is formed at the inner peripheral wall place of the cylindrical part 81 of valve chest.Fig. 3 and 4 reference character are represented the identical or corresponding part among whole Fig. 5 and 6.
As mentioned above, valve chest 80 is attached to the inwall of seal container 10, and safety check 90 is positioned within the cylindrical part 81 of valve chest.At this moment, two of safety check 90 contact slidably apart from the inner peripheral wall of holding part 92 with cylindrical part 81, the outer peripheral surface of the open/close portion 91 of safety check 90 contacts slidably with the internal surface of the guiding boss 84 of valve chest, thereby, two of safety check 90 contact with the inner peripheral wall of the cylindrical part 81 of valve chest apart from holding part 92 and are supported by it, and the guiding boss 84 of valve chest 80 and the outer peripheral surface of open/close portion 91 contact with each other.That is, valve chest 80 is supported at three points with safety check 90, thereby realizes stable bonding state.
In Fig. 7, described another embodiment of the invention.As shown, the lid 100 that is used for hiding the discharge orifice 31 of fixed scroll is attached to the upper surface of fixed scroll 30, and chamber 101 is formed by the upper surface of lid 100 and fixed scroll 30.Discharge pipe 13 penetrates seal container 10 and is attached to lid 100, is communicated with chamber 101.In addition, the backflow prevention device is installed in the lid 100, is communicated with discharge pipe 13.As mentioned above, the backflow prevention device comprises the valve chest 80 that is attached to lid 100 inwalls and inserts safety check 90 in the valve chest 80 movably.Identical in the concrete shape of valve chest 80 and safety check 90 and the above-mentioned explanation.
The work and the effect that prevent the device of gas reflux of vortex compressor according to of the present invention will be described now.
As mentioned above, when running shaft 70 rotated at the rotating force of receiving motor unit, the revolution scroll 40 of eccentric part 71 that is attached to running shaft was around the center steering of running shaft 70.According to the rotation motion of revolution scroll 40, the volute 41 of revolution scroll 40 turns round with the volute 32 of fixed scroll 30 with engaging, thus pressurized gas.Compressed high temperature and high pressure gas is discharged to the high-pressure area (H) of seal container 10 by the discharge orifice 31 of fixed scroll.
The gas that is discharged to the high-pressure area (H) of seal container 10 is discharged to outside the seal container 10 by discharge pipe 13.
When gas was discharged to the high-pressure area (H) of seal container 10 by the discharge orifice 31 of fixed scroll, the pressure of the high-pressure area of seal container (H) became than higher.Thereby as shown in Figure 8, the safety check 90 that is arranged in valve chest 80 slides to discharge pipe 13.At this moment, safety check 90 slides apart from the inner peripheral surface of holding part 92 along valve chest 80.Apart from holding part 92 location, because the high pressure in the seal container 10, it is apart from the inwall supporting of holding part 92 by seal container 10 by it for safety check 90, so that keep certain distance between the inlet of the open/close portion 91 of safety check and discharge pipe 13.Thereby the through hole 83 of the gas in the seal container 10 by valve chest introduced in the valve chests 80, the gas that is introduced into by safety check open/close portion 91 and the gap between the inlet of discharge pipe 13 flow in the discharge pipe 13.
The high temperature and high pressure gas that discharge pipe 13 by scroll compressor flows out is through condenser, capillary tube and vaporizer.
Simultaneously, when scroll compressor shuts down, engage the rotating revolution scroll 40 in ground with fixed scroll 30 and stop, thereby gas stops to discharge to the high-pressure area of seal container (H) by the discharge orifice 31 of fixed scroll.For this reason, it is lower than the pressure of the gas of discharging by discharge pipe 13 that the pressure in the high-pressure area of seal container (H) becomes, thus the gas backstreaming of discharging by discharge pipe 13.Yet, as shown in Figure 9, because becoming, the pressure in the seal container 10 is lower than pressure in the discharge pipe 13, so the safety check 90 that is arranged in valve chest 80 moves towards the shielding part 82 of valve chest, so that the open/close portion 91 of safety check has been blocked the through hole 83 that is formed at shielding part 82, thereby, prevented to be discharged to the gas backstreaming of discharge pipe 13 in seal container 10.
According to another implementation of the invention, if lid 100 is attached to the upper surface of fixed scroll 30, the chamber 101 that is formed by the upper surface of lid 100 and fixed scroll 30 becomes the high-pressure area (H) of seal container.Thereby the gas of discharging by the discharge orifice 31 of fixed scroll flows to discharge pipe 13 by chamber 101, and the backflow prevention device that is arranged in the chamber 101 is worked in the above described manner, thereby prevents the backflow of gas.
As up to the present described, in the device that prevents gas reflux of vortex compressor according to the present invention, the compressed gas of rotation motion by fixed scroll 30 and revolution scroll 40 is in the working procedure of compressor, be discharged to discharge pipe 13 reposefully by seal container 10, and when shutting down, prevented to be discharged to the gas backstreaming of discharge pipe 13 in seal container 10.Thereby, prevent the reduction of the compression efficiency under working order again, thereby improved compression efficiency.
Because under the situation that does not deviate from spirit of the present invention or substantive characteristics, the present invention can implement in several modes, so should be appreciated that, except as otherwise noted, otherwise above-mentioned mode of execution is not subjected to the restriction of any details in the above stated specification, explain widely and should in its spirit and scope, make, its spirit and scope are determined in the appended claims, thereby should think, fall in the border of claim and the boundary or be equivalent to these borders and boundary change and change all and comprised by appended claim.
Claims (15)
1. device that prevents the gas backstreaming of scroll compressor comprises:
Be provided with the seal container of discharge pipe, gas is discharged by this discharge pipe;
Be combined in the fixed scroll in the described seal container regularly;
The revolution scroll, its with the ground revolution of described fixed scroll interlocking with together with the fixed scroll pressurized gas; With
Prevent backflow prevention device by the gas backstreaming of described discharge pipe discharge.
2. device as claimed in claim 1 is characterized in that by the pressure reduction between described seal container and the discharge pipe described backflow prevention device opens or closes described discharge pipe.
3. device as claimed in claim 1 is characterized in that described backflow prevention device comprises:
Valve chest, it has the inner passage of reservation shape and is combined in regularly in the described seal container, and its inner passage is communicated with described discharge pipe; With
Safety check, it inserts in the described valve chest movably, is used for opening or closing described inner passage by pressure reduction.
4. device as claimed in claim 3 is characterized in that described safety check is provided with apart from holding part, is used for maintaining a certain distance with the inlet side of described discharge pipe.
5. device as claimed in claim 3 is characterized in that described valve chest comprises:
Cylindrical part, it forms the drum with certain-length and internal diameter, and is attached to the inwall of described seal container in the one side;
Shielding part is used for hiding a side of described cylindrical part; With
Through hole, it is formed on the described shielding part with penetrating, is opened or closed by described safety check.
6. device as claimed in claim 5, the guiding boss that it is characterized in that having certain altitude and length is formed at the inner peripheral surface of described cylindrical part.
7. device as claimed in claim 5 is characterized in that the internal diameter of described through hole is identical with the internal diameter of described discharge pipe.
8. device as claimed in claim 5 is characterized in that the internal diameter of the internal diameter of described cylindrical part greater than described discharge pipe.
9. device as claimed in claim 3 is characterized in that described safety check comprises:
Open/close portion with predetermined area; With
Apart from holding part, they extend certain-length from the outer peripheral surface of described open/close portion in the mode of bending, contact with the inwall of described valve chest, and keep certain distance between the inlet side of described open/close portion and discharge pipe.
10. device as claimed in claim 9 is characterized in that the space of gas flow is formed at described apart between the holding part.
11. device as claimed in claim 9 is characterized in that forming two apart from holding part.
12. device as claimed in claim 9 is characterized in that forming three apart from holding part.
13. device as claimed in claim 9 is characterized in that the interval that keeps rule between apart from holding part described.
14. device as claimed in claim 9 is characterized in that described open/close portion forms and has certain thickness dish type, its external diameter is greater than the internal diameter of described through hole.
15. device as claimed in claim 1, the lid that it is characterized in that being used for hiding the discharge orifice of described fixed scroll is arranged on the upper surface of fixed scroll, thereby form a chamber therein, described discharge pipe is attached to this lid, be communicated with described chamber, described backflow prevention device is arranged in the lid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100040137A CN100417815C (en) | 2005-01-06 | 2005-01-06 | Apparatus for preventing gas reflux of vortex compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100040137A CN100417815C (en) | 2005-01-06 | 2005-01-06 | Apparatus for preventing gas reflux of vortex compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1800646A true CN1800646A (en) | 2006-07-12 |
| CN100417815C CN100417815C (en) | 2008-09-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100040137A Expired - Fee Related CN100417815C (en) | 2005-01-06 | 2005-01-06 | Apparatus for preventing gas reflux of vortex compressor |
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| Country | Link |
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| CN (1) | CN100417815C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107061292A (en) * | 2017-06-16 | 2017-08-18 | 珠海格力电器股份有限公司 | Check valve and scroll compressor with same |
| CN107288889A (en) * | 2017-07-10 | 2017-10-24 | 珠海格力节能环保制冷技术研究中心有限公司 | The increasing enthalpy structure and screw compressor of compressor |
| WO2022036882A1 (en) * | 2020-08-17 | 2022-02-24 | 艾默生环境优化技术(苏州)有限公司 | Scroll compressor |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3376729B2 (en) * | 1994-06-08 | 2003-02-10 | 株式会社日本自動車部品総合研究所 | Scroll compressor |
| US5683236A (en) * | 1996-03-21 | 1997-11-04 | Alliance Compressors | Anti-reverse rotation valve for scroll compressor |
| CN2311667Y (en) * | 1997-07-11 | 1999-03-24 | 厦门东亚机械有限公司 | Automatic reliefing non-return valve for air compressor |
| JP2000097179A (en) * | 1998-09-24 | 2000-04-04 | Mitsubishi Electric Corp | Rotary compressor |
| JP2003172274A (en) * | 2001-12-05 | 2003-06-20 | Fujitsu General Ltd | Scroll compressor |
| CN100343524C (en) * | 2002-12-25 | 2007-10-17 | 乐金电子(天津)电器有限公司 | Outlet pipe connecting structure of vortex compressor |
-
2005
- 2005-01-06 CN CNB2005100040137A patent/CN100417815C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107061292A (en) * | 2017-06-16 | 2017-08-18 | 珠海格力电器股份有限公司 | Check valve and scroll compressor with same |
| CN107288889A (en) * | 2017-07-10 | 2017-10-24 | 珠海格力节能环保制冷技术研究中心有限公司 | The increasing enthalpy structure and screw compressor of compressor |
| WO2022036882A1 (en) * | 2020-08-17 | 2022-02-24 | 艾默生环境优化技术(苏州)有限公司 | Scroll compressor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100417815C (en) | 2008-09-10 |
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Granted publication date: 20080910 Termination date: 20120106 |