CN217501917U - High-efficient valve plate structure of refrigeration piston machine - Google Patents
High-efficient valve plate structure of refrigeration piston machine Download PDFInfo
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- CN217501917U CN217501917U CN202122147835.8U CN202122147835U CN217501917U CN 217501917 U CN217501917 U CN 217501917U CN 202122147835 U CN202122147835 U CN 202122147835U CN 217501917 U CN217501917 U CN 217501917U
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Abstract
The utility model relates to a high-efficient valve plate structure of refrigeration piston machine, it includes: the valve plate comprises a valve plate body, wherein an exhaust groove is formed in the upper surface of the valve plate body, an air suction groove is formed in the lower surface of the valve plate body, six exhaust holes are formed in the exhaust groove, and four air suction holes are formed in the air suction groove; the air suction groove is provided with an air suction valve assembly used for being matched with the air suction hole to be opened and closed, and the exhaust groove is provided with an exhaust valve assembly used for being matched with the exhaust hole to be opened and closed. The utility model discloses reduce exhaust hole quantity and can improve exhaust efficiency when equal flow area.
Description
Technical Field
The utility model relates to a refrigeration piston machine technical field especially relates to a high-efficient valve plate structure of refrigeration piston machine.
Background
For a semi-hermetic refrigeration piston compressor, the valve plate works as follows: when the piston moves downwards, the exhaust reed valve on the valve plate is automatically closed under the action of high exhaust pressure, and along with the reduction of the pressure in the cylinder, the suction reed valve on the valve plate is automatically opened when the air inlet pressure is greater than the pressure in the cylinder, so that the compressor continuously sucks air. When the piston moves upwards, the air pressure in the cylinder rises gradually, and when the pressure in the cylinder is greater than the suction pressure, the suction reed valve on the valve plate closes automatically. As the pressure in the cylinder continues to rise, the exhaust reed valve on the valve plate automatically opens, and the compressor completes one complete suction and exhaust process when the piston reaches the top, and the cycle is repeated. The valve plate is used as a key part for air suction, compression and exhaust of the piston machine, and the performance of the valve plate directly influences the overall efficiency of the piston machine.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
In order to solve the above problems in the prior art, the utility model provides a high-efficient valve plate structure of refrigeration piston machine reduces exhaust hole quantity and can improve exhaust efficiency when equal flow area.
(II) technical scheme
In order to achieve the above object, the utility model discloses a main technical scheme include:
a refrigeration piston machine high efficiency valve plate structure, comprising: the valve plate comprises a valve plate body, wherein an exhaust groove is formed in the upper surface of the valve plate body, an air suction groove is formed in the lower surface of the valve plate body, six exhaust holes are formed in the exhaust groove, and four air suction holes are formed in the air suction groove; the air suction groove is provided with an air suction valve assembly used for being matched with the air suction hole to be opened and closed, and the exhaust groove is provided with an exhaust valve assembly used for being matched with the exhaust hole to be opened and closed.
Furthermore, the air suction valve assembly comprises an air suction reed valve, one end of the air suction reed valve is connected with the valve plate body through an air suction valve plate positioning pin, and the other end of the air suction reed valve is attached to the surface of the air suction hole; and an air suction valve lift limiter used for limiting the opening size of the air suction reed valve is connected to the air suction valve plate positioning pin.
Furthermore, the middle part of the air suction reed valve is in a straight strip shape, and two ends of the straight strip shape respectively extend outwards to form a fixed end and a pressing end.
Furthermore, the exhaust valve assembly comprises an exhaust reed valve, one end of the exhaust reed valve is connected with the valve plate body through an exhaust valve sheet bolt and a nut, and the other end of the exhaust reed valve is attached to the surface of the exhaust hole; and the exhaust valve plate bolt is connected with an exhaust valve lift limiter for limiting the opening size of the exhaust reed valve.
Furthermore, an exhaust reed valve spring leaf is arranged between the exhaust reed valve and the exhaust valve lift limiter.
Furthermore, the end face of the exhaust hole, which is attached to the exhaust reed valve, sinks downwards to form a sink groove.
Furthermore, the connection position of the exhaust hole and the sink groove is in slope connection.
(III) advantageous effects
The utility model has the advantages that: the exhaust efficiency can be improved by reducing the number of the exhaust holes when the flow area is equal; the opening resistance of the air suction reed valve can be reduced by reducing the size of the middle part of the air suction reed valve; a sink groove is added below the exhaust reed valve to directly reduce the clearance between the exhaust reed valve and the exhaust hole; the small chamfer at the exhaust hole is processed into a slope, so that the exhaust can be smoother.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a front view of the structure of an embodiment of the present invention;
FIG. 3 is a cross-sectional view B-B of FIG. 2;
fig. 4 is a rear view of the structure of an embodiment of the present invention.
Detailed Description
For a better understanding of the present invention, reference will now be made in detail to the present invention, examples of which are illustrated in the accompanying drawings.
The utility model discloses a high-efficient valve plate structure of refrigeration piston machine of an embodiment, as shown in fig. 1-4, it includes: the valve plate comprises a valve plate body 1, wherein an exhaust groove 11 is formed in the upper surface of the valve plate body 1, a suction groove 12 is formed in the lower surface of the valve plate body 1, six exhaust holes 13 are formed in the exhaust groove 11, and the exhaust efficiency can be improved by the number of the six exhaust holes 13 under the condition of the same circulation area; four air suction holes 14 are formed in the air suction groove 12; the air suction groove 12 is provided with an air suction valve assembly which is used for being matched with the air suction hole 14 to open and close, and the exhaust groove 11 is provided with an exhaust valve assembly which is used for being matched with the exhaust hole 13 to open and close.
Specifically, the suction valve assembly comprises a suction reed valve 8, one end of the suction reed valve 8 is connected with the valve plate body 1 through a suction valve plate positioning pin 6, and the other end of the suction reed valve 8 is attached to the surface of a suction hole 14; and the air suction valve lift limiter 7 for limiting the opening size of the air suction reed valve 8 is connected to the air suction valve plate positioning pin 6.
Further, the middle part of the air suction reed valve 8 is in a straight bar shape, two ends of the straight bar shape respectively extend outwards to form a fixed end and a pressing end, the middle part of the air suction reed valve 8 is in the straight bar shape under the condition that the strength is guaranteed, and the opening resistance of the air suction reed valve 8 can be reduced.
Specifically, the exhaust valve assembly comprises an exhaust reed valve 4, one end of the exhaust reed valve 4 is connected with the valve plate body 1 through an exhaust valve plate bolt 3 and a nut 9, and the other end of the exhaust reed valve 4 is attached to the surface of an exhaust hole 13; the exhaust valve plate bolt 3 is connected with an exhaust valve lift limiter 2 for limiting the opening size of an exhaust reed valve 4; in order to make the exhaust reed valve 4 resilient and openable only at a certain exhaust pressure, an exhaust reed valve leaf 5 is provided between the exhaust reed valve 4 and the exhaust valve lift limiter 2.
Furthermore, the end face of the exhaust hole 13, which is attached to the exhaust reed valve 4, sinks downwards to form a sinking groove 131, which can directly reduce the compression clearance and provide the efficiency of the exhaust reed valve 4, for example, if the depth of the sinking groove of the exhaust reed valve 4 with the thickness of 6.5mm is 3.5mm, the clearance at the exhaust reed valve 4 is reduced by 53.8%; the joint of the exhaust hole 13 and the sink groove 131 is connected excessively by the slope 132, so that the exhaust efficiency can be improved, and the efficiency of the high-efficiency valve plate after comprehensive treatment can be improved by 3% -5% compared with the efficiency of a common valve plate.
The number of the exhaust holes is reduced to improve the exhaust efficiency when the flow area is the same; the opening resistance of the air suction reed valve can be reduced by reducing the size of the middle part of the air suction reed valve; an undercut is added below the exhaust reed valve 4 to directly reduce the clearance between the exhaust reed valve 4 and the exhaust hole 13; the small chamfer at the exhaust hole 13 is processed into a slope, so that the exhaust is smoother.
The above is only the preferred embodiment of the present invention, and all the equivalent changes and modifications made according to the claims of the present invention should be covered by the present invention.
Claims (7)
1. The utility model provides a high-efficient valve plate structure of refrigeration piston machine which characterized in that, it includes: the air exhaust valve comprises a valve plate body (1), wherein an air exhaust groove (11) is formed in the upper surface of the valve plate body (1), an air suction groove (12) is formed in the lower surface of the valve plate body (1), six air exhaust holes (13) are formed in the air exhaust groove (11), and four air suction holes (14) are formed in the air suction groove (12); be equipped with on suction channel (12) and be used for cooperating suction hole (14) to open and the suction valve subassembly of closing, be equipped with on exhaust groove (11) and be used for cooperating exhaust hole (13) to open and the discharge valve subassembly of closing.
2. A high efficiency valve plate structure for refrigeration piston machine as defined in claim 1, wherein: the air suction valve assembly comprises an air suction reed valve (8), one end of the air suction reed valve (8) is connected with the valve plate body (1) through an air suction valve plate positioning pin (6), and the other end of the air suction reed valve (8) is attached to the surface of an air suction hole (14); and the air suction valve lift limiter (7) for limiting the opening size of the air suction reed valve (8) is connected to the air suction valve plate positioning pin (6).
3. A high efficiency valve plate structure for refrigeration piston machine as defined in claim 2, wherein: the middle part of the air suction reed valve (8) is in a straight strip shape, and two ends of the straight strip shape respectively extend outwards to form a fixed end and a pressing end.
4. A high efficiency valve plate structure for refrigeration piston machine as defined in claim 1, wherein: the exhaust valve component comprises an exhaust reed valve (4), one end of the exhaust reed valve (4) is connected with the valve plate body (1) through an exhaust valve plate bolt (3) and a nut (9), and the other end of the exhaust reed valve (4) is attached to the surface of an exhaust hole (13); and the exhaust valve plate bolt (3) is connected with an exhaust valve lift limiter (2) for limiting the opening size of the exhaust reed valve (4).
5. A high efficiency valve plate structure for refrigeration piston machine as defined in claim 4, wherein: an exhaust reed valve spring leaf (5) is arranged between the exhaust reed valve (4) and the exhaust valve lift limiter (2).
6. A high efficiency valve plate structure for refrigeration piston machine as defined in claim 4, wherein: the end face of the exhaust hole (13) which is attached to the exhaust reed valve (4) sinks downwards to form a sink groove (131).
7. A high efficiency valve plate structure for refrigeration piston machine as defined in claim 6, wherein: the connection position of the exhaust hole (13) and the sinking groove (131) is connected by a slope (132).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122147835.8U CN217501917U (en) | 2021-09-07 | 2021-09-07 | High-efficient valve plate structure of refrigeration piston machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122147835.8U CN217501917U (en) | 2021-09-07 | 2021-09-07 | High-efficient valve plate structure of refrigeration piston machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217501917U true CN217501917U (en) | 2022-09-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122147835.8U Active CN217501917U (en) | 2021-09-07 | 2021-09-07 | High-efficient valve plate structure of refrigeration piston machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217501917U (en) |
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2021
- 2021-09-07 CN CN202122147835.8U patent/CN217501917U/en active Active
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