CN102192152A - Pressure maintenance valve for semi-seal compressor with oil content - Google Patents
Pressure maintenance valve for semi-seal compressor with oil content Download PDFInfo
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- CN102192152A CN102192152A CN201010120573XA CN201010120573A CN102192152A CN 102192152 A CN102192152 A CN 102192152A CN 201010120573X A CN201010120573X A CN 201010120573XA CN 201010120573 A CN201010120573 A CN 201010120573A CN 102192152 A CN102192152 A CN 102192152A
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Abstract
The invention discloses a pressure maintenance valve for a semi-seal compressor with oil content. The valve comprises a valve rod, a valve body, a first O-shaped ring, a piston, a second O-shaped ring, an upper cover, a spring, a locking bolt, a seal pad, a quick open spring, a valve plate, a Teflon pad, a lower baffle plate, a rotation-proof nut and a joint, wherein the first O-shaped ring, the valve plate, the Teflon pad and the lower baffle plate are all fixed on the valve rod through the rotation-proof nut; the quick open spring is installed in the piston; the piston is positioned above the valve plate; the lower baffle plate is positioned between the Teflon pad and the rotation-proof nut; the second O-shaped ring is installed in a groove of the piston; the piston is positioned between the upper cover and a cavity formed by the valve body; the spring is positioned in a cavity formed by the upper cover and the piston; the upper cover is fixed with the valve body through the locking bolt and the seal pad; and the joint is fixed on the upper cover. Through the pressure maintenance valve, a pressure differential can be ensured to be set in a short time when the compressor is started up, and the flow of lubricating oil in the inner part of the compressor can be ensured.
Description
Technical field
The present invention relates to a kind of pressure valve, particularly a kind of pressure that is used to partly to seal with oil content compressor is kept valve (minimum pressure valve).
Background technique
Nowadays along with the application area of partly sealing the screw rod machine is constantly widened, many times compressor can operate in the system that just pressure reduction is very low.And when under this operating mode, moving, be the pressure reduction fuel feeding owing to partly seal the fuel system of screw rod machine, pressure reduction is crossed and is lowly just meaned that also compressor oil-supplying has some setbacks, thereby directly causes loading difficulty, and lubrication failure is when serious even cause compressor stuck.And, directly discharge compressor through the gas of overcompression and enter system, but, when cooling water temperature is low, be difficult for setting up at short notice pressure reduction because system for content is long-pending big.
Summary of the invention
Technical problem to be solved by this invention provides a kind of pressure that is used to partly to seal with oil content compressor and keeps valve, and it can guarantee to set up at short notice when compressor has just been started shooting pressure reduction, guarantees flowing of compressor internal lubrication oil.
For solveing the technical problem, the invention provides a kind of pressure that is used to partly to seal compressor and keep valve with oil content, it is characterized in that, be used to keep valve and comprise valve rod with the pressure that oil content partly seals compressor, valve body, the one O shape ring, piston, the 2nd O shape ring, loam cake, spring, lock bolt, sealing gasket, open spring soon, valve block, the Furtulon pad, lower stop piece, rotating-proof nut and joint, the one O shape ring, valve block, the Furtulon pad, lower stop piece all is fixed on the valve rod by rotating-proof nut, opening spring soon is installed in the piston, piston is positioned at the top of valve block, lower stop piece is between Furtulon pad and rotating-proof nut, the 2nd O shape ring is installed in the groove of piston, piston is arranged in the cavity of loam cake and valve body formation, spring is positioned at the cavity of loam cake and piston formation, loam cake passes through lock bolt, sealing gasket and valve body are fixed, and joint is fixed on and covers.
Preferably, describedly be used to keep that valve is installed on condenser and the band oil content partly seals between the compressor with the pressure that oil content partly seals compressor.
Positive progressive effect of the present invention is: the present invention is installed on condenser and the band oil content partly seals between the compressor; be in order to ensure when compressor is just started shooting; its inside can be set up pressure reduction at short notice; guarantee flowing of compressor internal lubrication oil; when compressor is just shut down; it is cutoff high gas rapidly, prevents that compressor from reversing for a long time.
Description of drawings
Fig. 1 is the structural representation of one embodiment of the invention.
Fig. 2 is the principle schematic of practical application of the present invention.
Embodiment
Lift a preferred embodiment below, and come the clearer the present invention that intactly illustrates in conjunction with the accompanying drawings.
As shown in Figure 1, the present invention is used to keep valve with the pressure that oil content partly seals compressor and comprises valve rod 1, valve body 2, the one O shape ring 3, piston 4, the 2nd O shape ring 5, loam cake 6, spring 7, lock bolt 8, sealing gasket 9, open spring 10 soon, valve block 11, Furtulon pad 12, lower stop piece 13, rotating-proof nut 14 and joint 15, the one O shape ring 3, valve block 11, Furtulon pad 12, lower stop piece 13 all is fixed on the valve rod 1 by rotating-proof nut 14, opening spring 10 soon is installed in the piston 4, piston 4 is positioned at the top of valve block 11, lower stop piece 13 is between Furtulon pad 12 and rotating-proof nut 14, the 2nd O shape ring 5 is installed in the groove of piston 4, piston 4 is arranged in the cavity of loam cake 6 and valve body 2 formation, spring 7 is positioned at the cavity of loam cake 6 and piston 4 formations, loam cake 6 is by lock bolt 8, sealing gasket 9 is fixing with valve body 2, and joint 15 is fixed on the loam cake 6.Valve rod 1, O shape ring 3, valve block 11, Furtulon pad 12, lower stop piece 13 and rotating-proof nut 14 are formed valve rod group, and Furtulon pad 12 will leave valve body 2 when valve rod group moves up after, piston 4, the 2nd O shape ring 5 and open spring 10 composition piston set soon.
As shown in Figure 2, the present invention is used to keep with the pressure that oil content partly seals compressor that valve is installed on condenser and the band oil content partly seals between the compressor, and the gas of low voltage side is connected to joint.When compressor is started shooting, suck gas by evaporator evaporation, the gas after overcompression enters the oil content of compressor, keeps at pressure under the effect of valve and carries out pressure accumulation, discharges compressor and enter condenser after pressure reaches pressure to keep the valve setting value.
When compressor is shut down for a long time, because piston set upside A district and downside B district's pressure balance, so piston set is understood by following and valve body contact seal under the effect of gravity.When compressor starts is moved, thereby B district pressure raises rapidly and sets up compressor oil inside offering pressure, when its pressure is elevated to when being enough to overcome the elastic force of A district pressure, piston set gravity, spring 7, can back down piston set gradually, under the prerequisite that guarantees compressor oil inside offering pressure, B district pressure is discharged into the C district, slowly promotes C district pressure.Adopt this mode to set up pressure reduction at short notice, can guarantee that compressor oil inside offering pressure sets up fast, guarantee that compressor normally moves, widen the range of operation of compressor, compressor also can be stablized under the low working condition of system's pressure reduction, move reliably.When compressor is just shut down; because B district pressure discharges to the A district; piston set inside is held spring 10 soon and can rapidly downward lateral movement be sealed until contacting with valve body sealing surface, continues to discharge to B district, A district thereby throttle down cuts off C district pressurized gas, effectively avoids compressor to reverse for a long time.
Though more than described the specific embodiment of the present invention, it will be understood by those of skill in the art that these only illustrate, under the prerequisite that does not deviate from principle of the present invention and essence, can make numerous variations or modification to these mode of executions.Therefore, protection scope of the present invention is limited by appended claims.
Claims (2)
1. a pressure that is used to partly to seal with oil content compressor is kept valve, it is characterized in that, be used to keep valve and comprise valve rod with the pressure that oil content partly seals compressor, valve body, the one O shape ring, piston, the 2nd O shape ring, loam cake, spring, lock bolt, sealing gasket, open spring soon, valve block, the Furtulon pad, lower stop piece, rotating-proof nut and joint, the one O shape ring, valve block, the Furtulon pad, lower stop piece all is fixed on the valve rod by rotating-proof nut, opening spring soon is installed in the piston, piston is positioned at the top of valve block, lower stop piece is between Furtulon pad and rotating-proof nut, the 2nd O shape ring is installed in the groove of piston, piston is arranged in the cavity of loam cake and valve body formation, spring is positioned at the cavity of loam cake and piston formation, loam cake passes through lock bolt, sealing gasket and valve body are fixed, and joint is fixed on and covers.
2. the pressure that is used to partly to seal with oil content compressor as claimed in claim 1 is kept valve, it is characterized in that, describedly is used to keep with the pressure that oil content partly seals compressor that valve is installed on condenser and the band oil content partly seals between the compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010120573XA CN102192152A (en) | 2010-03-09 | 2010-03-09 | Pressure maintenance valve for semi-seal compressor with oil content |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010120573XA CN102192152A (en) | 2010-03-09 | 2010-03-09 | Pressure maintenance valve for semi-seal compressor with oil content |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102192152A true CN102192152A (en) | 2011-09-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010120573XA Pending CN102192152A (en) | 2010-03-09 | 2010-03-09 | Pressure maintenance valve for semi-seal compressor with oil content |
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| Country | Link |
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| CN (1) | CN102192152A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103162460A (en) * | 2011-12-15 | 2013-06-19 | 同方人工环境有限公司 | Hydraulic filling type screw water-cooled cold water and heat pump unit |
| CN104422065A (en) * | 2013-08-23 | 2015-03-18 | 珠海格力电器股份有限公司 | Air conditioning system and control method thereof |
| US20210054838A1 (en) * | 2018-03-27 | 2021-02-25 | Atlas Copco Airpower Naamloze Vennootschap | Improved minimum pressure valve and method for servicing such a valve |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1091862C (en) * | 1995-11-13 | 2002-10-02 | 运载器有限公司 | Back pressure control for improved system operative efficiency |
| CN2830835Y (en) * | 2005-09-05 | 2006-10-25 | 郭勇辉 | Negative pressure sustain valve |
| CN100436905C (en) * | 2003-11-28 | 2008-11-26 | 陈玪洙 | Flow path control valve |
| CN201176916Y (en) * | 2007-09-19 | 2009-01-07 | 复盛股份有限公司 | Compressor outlet valve assembly |
| CN201666255U (en) * | 2010-03-09 | 2010-12-08 | 上海汉钟精机股份有限公司 | Pressure maintaining valve used for oily semi-hermetic compressor |
-
2010
- 2010-03-09 CN CN201010120573XA patent/CN102192152A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1091862C (en) * | 1995-11-13 | 2002-10-02 | 运载器有限公司 | Back pressure control for improved system operative efficiency |
| CN100436905C (en) * | 2003-11-28 | 2008-11-26 | 陈玪洙 | Flow path control valve |
| CN2830835Y (en) * | 2005-09-05 | 2006-10-25 | 郭勇辉 | Negative pressure sustain valve |
| CN201176916Y (en) * | 2007-09-19 | 2009-01-07 | 复盛股份有限公司 | Compressor outlet valve assembly |
| CN201666255U (en) * | 2010-03-09 | 2010-12-08 | 上海汉钟精机股份有限公司 | Pressure maintaining valve used for oily semi-hermetic compressor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103162460A (en) * | 2011-12-15 | 2013-06-19 | 同方人工环境有限公司 | Hydraulic filling type screw water-cooled cold water and heat pump unit |
| CN104422065A (en) * | 2013-08-23 | 2015-03-18 | 珠海格力电器股份有限公司 | Air conditioning system and control method thereof |
| US20210054838A1 (en) * | 2018-03-27 | 2021-02-25 | Atlas Copco Airpower Naamloze Vennootschap | Improved minimum pressure valve and method for servicing such a valve |
| US11859616B2 (en) * | 2018-03-27 | 2024-01-02 | Atlas Copco Airpower, Naamloze Vennootschap | Minimum pressure valve and method for servicing such a valve |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110921 |