CN1884830B - Compressor control valve - Google Patents
Compressor control valve Download PDFInfo
- Publication number
- CN1884830B CN1884830B CN2005100271150A CN200510027115A CN1884830B CN 1884830 B CN1884830 B CN 1884830B CN 2005100271150 A CN2005100271150 A CN 2005100271150A CN 200510027115 A CN200510027115 A CN 200510027115A CN 1884830 B CN1884830 B CN 1884830B
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- valve
- control valve
- steel ball
- spring
- valve rod
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Abstract
The invention relates to a compressor control valve, with basic structure of present one, wherein the control curvature of said control valve has bended shape; when the discharge pressure is higher than one threshold valve, the adsorption pressure can be held or changed little. When the discharge pressure is higher, the adsorption pressure starting point of control valve will not change or change little, to meet the demand of refrigeration and avoid frost inside the vaporizer.
Description
Technical field
The present invention relates to the control valve of air condition compressor, more particularly, relate to a kind of control valve that is used for the band exhaust pressure compensation of automobile air-conditioning refrigeration compressor.
Background technique
The structure of the control valve of compressor with variable displacement is as follows usually: with reference to shown in Figure 1, comprise: upper valve body 100, following valve body 102 and valve seat 104 socket successively, support the The whole control valve, upper valve body 100, the following valve body 102 and valve seat 104 outsides respectively are with one or several O RunddichtringOs 106, has bellows 108 in the upper valve body 100, bellows 108 is experienced pressure of inspiration(Pi), variation in pressure is changed into length change, bellows 108 connects valve rod 112, valve rod 112 is with following valve body 102 opening and closing valve ports, be with valve rod spring 114 on the valve rod 112, valve rod 112 is resetted, have steel ball 116 in the valve seat 104, steel ball 116 is with valve seat 104 opening and closing valve ports, one end of steel ball 116 connects steel ball and spring 118, compresses steel ball 116.Exhaust pressure Pd affacts an end of valve seat 104, and pressure of inspiration(Pi) Ps affacts on the bellows 108.
In compressor with variable displacement, when making, the unlatching value of control valve just adjusts.In general, the unlatching value of control valve is subjected to the dual control of pressure of inspiration(Pi) and exhaust pressure, under certain exhaust pressure, when pressure of inspiration(Pi) height (low) during in a certain value, control valve has one and closes (unlatching) action, exhaust pressure is high more, and the pressure of inspiration(Pi) of action is just low more, draws a curve thus, abscissa is an exhaust pressure, y coordinate is a pressure of inspiration(Pi), and operating point is linked to be curve, and this curve is called the control curve of control valve.The control curve of tradition control valve is straight line, can change the position and the slope of straight line by size Control.Show the control curve of traditional control valve with reference to figure 2, it is a decline straight line.
Yet in actual use, the refrigeration of pursuing (cooling rate is fast) in the air-conditioning system coupling, has a pair of contradiction: in order to be selected the lower control valve of point size for use, and for the inner no frosting of vaporizer under various weather conditions needs the control valve of selecting for use point size higher, this is owing to the control curve of control valve in the prior art is that a straight line causes.
So just need a kind of control valve, when exhaust pressure was higher, the pressure of inspiration(Pi) opening point of control valve can not change or few the variation, thereby overcame the shortcoming of above-mentioned traditional control valve.
Summary of the invention
Of the present inventionly provide a kind of control valve, when exhaust pressure was higher, the pressure of inspiration(Pi) opening point of control valve did not change or few the variation, thereby was satisfying the requirement that refrigeration can satisfy the inner no frosting of vaporizer under various weather conditions simultaneously again.
According to technological scheme of the present invention, a kind of compressor control valve is provided, have compressor control valve basic structure, the control curve of this kind compressor control valve presents broken line type, and when exhaust pressure during greater than a threshold values, pressure of inspiration(Pi) remains unchanged or changes very little.
According to one embodiment of the invention, described compressor control valve comprises O type circle, bellows, upper valve body, valve rod, following valve body, valve rod spring, valve seat, steel ball and steel ball and spring, the cavity that has a passage and link to each other on the wherein said control valve with this passage, one end of described valve rod extends in this cavity and connects a stop bit ring washer, also has a slide block slidably in the described cavity, slide block one side connects a sliding block spring, opposite side can touch described stop bit ring washer, and the opposite side of described sliding block spring connects valve seat.
According to one embodiment of the invention, the threshold values of the exhaust pressure of described control valve curve is more than or equal to 1.35MPaG.
Control valve of the present invention is when exhaust pressure during less than predefined threshold values, and slide block moves right, and the power of sliding block spring has been offset the power that exhaust pressure produces; When exhaust pressure during greater than predefined threshold values, slide block is run into the stop bit ring washer that is connected valve rod one end, just can produce an opposition on valve rod.
According to one embodiment of the invention, wherein, described control valve specifically comprises following structure: upper valve body, following valve body and valve seat socket successively, support the The whole control valve, described upper valve body, the following valve body and the valve seat outside respectively are with one or several O RunddichtringOs, have bellows in the upper valve body, bellows is experienced pressure of inspiration(Pi), and variation in pressure is changed into length change, the ripple bar connects valve rod, described valve rod is with the valve rod spring with following valve body opening and closing valve port on the valve rod, valve rod is resetted, has steel ball in the valve seat, steel ball is with valve seat opening and closing valve port, and an end of steel ball connects steel ball and spring, compresses steel ball.
Adopted technological scheme of the present invention, this kind control valve is when exhaust pressure is higher, the pressure of inspiration(Pi) opening point of control valve does not change or few the variation, has satisfied the requirement that refrigeration satisfies the inner no frosting of vaporizer under various weather conditions simultaneously again.
Description of drawings
The above and other features of the present invention, character and advantage will be more obvious by what become below in conjunction with drawings and Examples, and in the accompanying drawings, identical reference character is represented identical feature all the time, wherein,
Fig. 1 is the cut-away view of traditional control valve.
Fig. 2 is the control plotted curve of traditional control valve.
Fig. 3 is the cut-away view of control valve according to an embodiment of the invention.
Fig. 4 is the control plotted curve of control valve according to an embodiment of the invention.
Embodiment
Further specify technological scheme of the present invention below in conjunction with drawings and Examples.
Main design philosophy of the present invention is to increase the cavity that has a passage and link to each other with this passage on traditional control valve that comprises O type circle, bellows, upper valve body, valve rod, following valve body, valve rod spring, valve seat, steel ball and steel ball and spring, one end of valve rod extends in this cavity and connects a stop bit ring washer, also has a slide block slidably in the cavity, slide block one side connects a sliding block spring, opposite side can touch the stop bit ring washer, and the opposite side of sliding block spring connects valve seat.Present broken line type thereby reach the control curve that makes control valve, when exhaust pressure during greater than a threshold values, pressure of inspiration(Pi) remains unchanged or changes very little.
Show the cut-away view of the control valve of one embodiment of the invention with reference to figure 3, as shown in Figure 3, wherein upper valve body 200, following valve body 202 and valve seat 204 socket successively, support the The whole control valve, upper valve body 200, the following valve body 202 and valve seat 204 outsides respectively are with one or several O RunddichtringOs 206, has bellows 208 in the upper valve body 200, bellows 208 is experienced pressure of inspiration(Pi), variation in pressure is changed into length change, bellows 208 connects valve rod 212, valve rod 212 is with valve rod spring 214 with following valve body 202 opening and closing valve ports on the valve rod 212, valve rod 212 is resetted, has steel ball 216 in the valve seat 204, steel ball 216 is with valve seat 204 opening and closing valve ports, and an end of steel ball 216 connects steel ball and spring 218, compresses steel ball 216.The cavity 222 that also has a passage 220 on the control valve and link to each other with this passage, one end of valve rod 212 extends in this cavity 222 and connects a stop bit ring washer 224, also has a slide block 226 slidably in the cavity 222, slide block 226 1 sides connect a sliding block spring 228, opposite side can touch stop bit ring washer 224, and the opposite side of sliding block spring 228 connects valve seat 204.Exhaust pressure Pd affacts an end of valve seat 204, also affacts in the cavity 222 by passage 220 (being called the Pd passage), and pressure of inspiration(Pi) Ps affacts on the bellows 210.
Control valve work of the present invention is as follows: as exhaust pressure Pd during less than predefined threshold values Pd ', slide block 226 moves right, and the power of sliding block spring 228 has been offset the power that exhaust pressure produces; As Pd during greater than predefined threshold values Pd ', slide block 226 is run into the stop bit ring washer 224 on the valve rod 212, just can on valve rod 212, produce a active force, so a turning point appears in the control curve of control valve when exhaust pressure equals threshold values Pd ' and locates towards the valve port opening direction.
Then with reference to figure 4, Fig. 4 is the control curve of the control valve of band exhaust pressure compensation of the present invention, the control song that Fig. 4 illustrates control valve is greater than a certain specific exhaust pressure the time, the control curve has a significantly turnover, promptly when exhaust pressure during greater than a certain value (threshold values Pd '), pressure of inspiration(Pi) remains unchanged or becomes seldom.The control plotted curve of the control valve of band exhaust pressure compensation of the present invention shown in Fig. 4, wherein abscissa is represented exhaust pressure, and y coordinate is represented pressure of inspiration(Pi), and unit is MPaG.
According to one embodiment of the invention, the exhaust pressure of the turning point of the plotted curve of control valve shown in Fig. 4 is 1.35MPaG, and pressure of inspiration(Pi) is 0.16MPaG.Certainly, the turning point of control valve plotted curve, promptly the threshold values of exhaust pressure also can be greater than 1.35MPaG, and the span of the exhaust pressure threshold values of control valve of the present invention is for being greater than or equal to 1.35MPaG.
Adopted technological scheme of the present invention, this kind control valve is when exhaust pressure is higher, the pressure of inspiration(Pi) opening point of control valve does not change or few the variation, has satisfied the requirement that refrigeration satisfies the inner no frosting of vaporizer under various weather conditions simultaneously again.
Though technological scheme of the present invention is illustrated in conjunction with preferred embodiment; but it should be appreciated by those skilled in the art; various modifications or change for the above embodiments are predictable; this should not be regarded as having exceeded protection scope of the present invention; therefore; protection scope of the present invention is not limited to above-mentioned specifically described embodiment, and should be the most wide in range scope that meets the inventive features that discloses in this place.
Claims (3)
1. compressor control valve, it is characterized in that, comprise O type circle, bellows, upper valve body, valve rod, following valve body, the valve rod spring, valve seat, steel ball, and steel ball and spring, upper valve body wherein, following valve body and valve seat socket successively, support the The whole control valve, described upper valve body, the following valve body and the valve seat outside respectively are with one or several O RunddichtringOs, has bellows in the upper valve body, bellows is experienced pressure of inspiration(Pi), and variation in pressure is changed into length change, and the ripple bar connects valve rod, described valve rod is with following valve body opening and closing valve port, be with the valve rod spring on the valve rod, valve rod is resetted, have steel ball in the valve seat, steel ball is with valve seat opening and closing valve port, one end of steel ball connects steel ball and spring, compresses steel ball, and the control curve of control valve presents broken line type, when exhaust pressure during greater than a threshold values, the pressure of inspiration(Pi) opening point of control valve remains unchanged, and wherein, the threshold values of the exhaust pressure of the control curve of described control valve is more than or equal to 1.35MPaG.
2. compressor control valve as claimed in claim 1 is characterized in that,
The cavity that has a passage and link to each other on the described control valve with this passage, one end of described valve rod extends in this cavity and connects a stop bit ring washer, also has a slide block slidably in the described cavity, one side of slide block connects a side of a sliding block spring, the opposite side of slide block can touch described stop bit ring washer, and the opposite side of sliding block spring connects valve seat.
3. control valve as claimed in claim 2 is characterized in that, when exhaust pressure during less than predefined threshold values, slide block moves right, and the power of sliding block spring has been offset the power that exhaust pressure produces; When exhaust pressure during greater than predefined threshold values, slide block is run into the stop bit ring washer that is connected valve rod one end, just can produce an active force towards the valve port opening direction on valve rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005100271150A CN1884830B (en) | 2005-06-24 | 2005-06-24 | Compressor control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005100271150A CN1884830B (en) | 2005-06-24 | 2005-06-24 | Compressor control valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1884830A CN1884830A (en) | 2006-12-27 |
| CN1884830B true CN1884830B (en) | 2010-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2005100271150A Expired - Fee Related CN1884830B (en) | 2005-06-24 | 2005-06-24 | Compressor control valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1884830B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005869B (en) * | 2019-04-17 | 2021-07-06 | 上海进纬仪器设备有限公司 | Corrugated pipe and electromagnetic valve with same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1499078A (en) * | 2002-11-12 | 2004-05-26 | 株式会社不二工机 | Control valve for variable capacity compressor |
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2005
- 2005-06-24 CN CN2005100271150A patent/CN1884830B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1499078A (en) * | 2002-11-12 | 2004-05-26 | 株式会社不二工机 | Control valve for variable capacity compressor |
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| Publication number | Publication date |
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| CN1884830A (en) | 2006-12-27 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Shanghai City 200025 Madang Road No. 347 Patentee after: SANDEN HUAYU AUTOMOTIVE AIR-CONDITIONING CO., LTD. Address before: Shanghai City 200025 Madang Road No. 347 Patentee before: Sandian Beier Automobile Air-Conditioner Co., Ltd., Shanghai |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100929 Termination date: 20170624 |
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| CF01 | Termination of patent right due to non-payment of annual fee |