CN214698253U - Air exhaust port oblique arc groove valve plate for refrigeration compressor - Google Patents
Air exhaust port oblique arc groove valve plate for refrigeration compressor Download PDFInfo
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- CN214698253U CN214698253U CN202120579217.8U CN202120579217U CN214698253U CN 214698253 U CN214698253 U CN 214698253U CN 202120579217 U CN202120579217 U CN 202120579217U CN 214698253 U CN214698253 U CN 214698253U
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Abstract
The utility model discloses an exhaust port oblique arc groove valve plate for a refrigeration compressor, which comprises a valve plate, wherein an exhaust hole is arranged on the valve plate, an oblique arc groove is arranged at the inlet end of the exhaust hole, and the oblique arc groove is arranged at one side close to the fixed end of an exhaust valve plate; the inclination direction of the center line of the oblique arc groove is consistent with the trend of the opening direction of the exhaust valve plate; the exhaust port oblique arc groove valve plate is simple in structure, easy to process and manufacture, small in air flow resistance and small in influence on an air conveying system. The oblique arc groove is formed in the inlet end (no valve end) of the exhaust hole, so that the air can flow conveniently, the flowing direction of the air is changed, the flow resistance is reduced, the exhaust valve plate is opened more easily, and the exhaust efficiency of the compressor is improved.
Description
Technical Field
The utility model relates to compressor valve plate technical field, concretely relates to gas vent oblique arc groove valve plate for compressor.
Background
In the common piston type refrigeration compressor at present, the exhaust holes in the valve plate are all designed into the round holes. The valve plate is a key part of the piston type refrigeration compressor, and a flow channel system of the whole compressor can be optimized by optimizing the valve plate, so that the performance coefficient of the refrigeration compressor is improved.
At present, in actual compressor circulation, the required pressure of opening of the discharge valve piece at the exhaust stage is higher, the exhaust time is very short, the flow passage area of the discharge port is smaller and is mostly a circular hole (see the attached drawing 1 in the specification), the discharge port has a large influence clearance volume (the volume of gas remained at the top of the piston when the piston runs to the top), so that the discharge capacity and the gas transmission capacity are reduced, therefore, the discharge port is mostly a smaller cylindrical design, the process is simple, but the flow resistance is larger, and the influence on the gas transmission coefficient is larger.
The inner edge of the end face of the exhaust valve seat is arranged to be a chamfer structure so as to improve exhaust and flapping stress; for example, a valve seat end face structure for a reciprocating piston compressor is disclosed in 2019 by a Chinese utility model patent (publication number: CN209179981U), which comprises a valve plate body, wherein the valve plate body is provided with an air suction valve seat end face and an air discharge valve seat end face, and the inner edges of the air suction valve seat end face and the air discharge valve seat end face are respectively provided with a chamfer structure; although the structure is helpful for improving the reliability of the suction and exhaust valve plate and reducing the slapping noise, the change of the air flow direction and the adjustment of the stress position are limited, and the opening speed of the exhaust valve plate and the exhaust efficiency of the compressor still have larger lifting space.
Disclosure of Invention
The utility model aims at the problem that prior art exists, a gas vent oblique arc groove valve plate for compressor is provided.
In order to achieve the above object, the utility model adopts the following technical scheme:
an exhaust port oblique arc groove valve plate for a refrigeration compressor comprises a valve plate, wherein an exhaust hole is formed in the valve plate, an oblique arc groove is formed in the inlet end of the exhaust hole, and the oblique arc groove is formed in one side close to the fixed end of an exhaust valve plate; the inclination direction of the center line of the oblique arc groove is consistent with the trend of the opening direction of the exhaust valve plate.
The exhaust port oblique arc groove valve plate is simple in structure, easy to process and manufacture, small in air flow resistance and small in influence on an air conveying system. The oblique arc groove is formed in the inlet end (no valve end) of the exhaust hole, so that the air can flow conveniently, the flowing direction of the air is changed, the flow resistance is reduced, the exhaust valve plate is opened more easily, and the exhaust efficiency of the compressor is improved.
In the exhaust stage, high-pressure gas can flow along the oblique arc groove to the opening direction of the exhaust valve plate, so that the gas flow is optimized, and the exhaust valve plate is opened faster, so that the exhaust stage is advanced, and the purposes of reducing flow resistance, improving exhaust efficiency and improving the performance coefficient of the compressor are achieved.
Specifically, when high-pressure gas passes through the valve plate with the oblique arc groove, the gas flow direction is just attached to the opening when the exhaust valve plate is just opened, the gas can flow along the oblique arc groove towards the opening direction curve of the exhaust valve plate, and the stress central point of the whole exhaust valve plate is pushed outwards, so that the exhaust valve plate can be opened more quickly.
Further, the circumferential range of the oblique arc groove does not exceed the circumferential range of three quarters of the exhaust holes.
The oblique arc groove cannot be too large and cannot be close to the other side (the side of the opening of the exhaust valve plate), and the oblique arc groove is arranged to form an asymmetric space at the inlet end of the exhaust hole, so that the airflow is forced to change the direction, the position of the exhaust valve plate impacted by the airflow is improved, and the flow direction and the stress are optimized.
Furthermore, the depth of the oblique arc groove is H, the length or the diameter of the exhaust hole is D, and the ratio of H to D is 0.1-0.5.
Furthermore, the length of the oblique arc groove is L, the length or the diameter of the exhaust hole is D, and the ratio of L to D is 0.04-0.4.
Through simulation test and performance test, the influence of the oblique arc groove on the direction and the speed of the air flow under different sizes is researched and analyzed, a reasonable and standard size numerical range is obtained, namely the size of the oblique arc groove and the size of the exhaust hole are arranged in the range (L/D is 0.04-0.4, H/D is 0.1-0.5), the air flow resistance and the exhaust performance are good, and the exhaust noise is very small compared with the prior art.
Furthermore, an included angle between the central line of the oblique arc groove and the central line of the exhaust valve plate is within +/-75 degrees.
That is to say, the oblique arc groove does not need to be the middle line position of the exhaust valve plate any more, and can be arbitrarily arranged in the range of 150 degrees, and the oblique arc groove has a positive effect in the interval, and if the oblique arc groove is continuously deviated towards two sides and even arranged at one side close to the opening of the exhaust valve plate, the improvement of the airflow and the optimization of the airflow impact and the opening speed of the exhaust valve plate are obviously influenced, and negative effects are generated.
Further, the entry end and the exit end of exhaust hole all chamfer setting, and the chamfer size of exit end is greater than the chamfer size of entry end.
Furthermore, a valve plate limiting plate is further arranged on the outer side of the exhaust valve plate, and one surface, facing the exhaust hole, of the valve plate limiting plate is obliquely arranged and extends forwards along the airflow exhaust direction; and a buffer sheet is arranged between the exhaust valve sheet and the valve sheet limiting plate.
The valve plate limiting plate can limit the opening angle of the exhaust valve plate so as to control the opening angle and size; the valve plate limiting plate extends forwards along the air flow discharging direction to further guide air flow and reduce noise.
Furthermore, the valve plate is provided with a plurality of shallow grooves with different sizes at the position below the exhaust valve plate. The arrangement of the shallow grooves facilitates the repeated closing and opening of the exhaust valve plate.
Furthermore, a boss piston matched with the valve plate is further arranged on one surface of the valve plate, back to the exhaust valve plate, corresponds to the exhaust hole and is provided with a boss, the size of the boss is smaller than that of the exhaust hole, and an oblique plane is arranged on one side, facing the oblique arc groove, of the boss.
The boss with the setting of scarf, the cooperation the setting of oblique arc groove can further outstanding improvement air current, noise reduction, the characteristics that promote the exhaust performance, the effect is showing more.
Further, the boss is a truncated cone-shaped boss; the ratio of the axial height to the radial length of the chamfer is between 0.5 and 2; the ratio of the radial length of the chamfer to the inner diameter of the exhaust hole is between 0.1 and 0.5, and the ratio of the axial height of the chamfer to the inner diameter of the exhaust hole is also between 0.1 and 0.5.
Compared with the prior art, the beneficial effects of the utility model are that: 1. the exhaust port oblique arc groove valve plate has the advantages of simple structure, easy processing and manufacturing, small airflow resistance and small influence on an air delivery system; the oblique arc groove is formed at the inlet end (no valve end) of the exhaust hole, so that the gas can flow conveniently, the gas flow direction is changed, the flow resistance is reduced, the exhaust valve plate is easier to open, and the exhaust efficiency of the compressor is improved; 2. the flow channel of the exhaust hole of the valve plate of the compressor is improved, the exhaust loss is reduced, the exhaust valve plate can be opened more easily, the exhaust efficiency is improved, the compressor can discharge more high-pressure gas in each circulation, the refrigerating capacity of the compressor is improved, and the performance coefficient of the compressor is improved; 3. the inclined arc groove can form an asymmetric space at the inlet end of the exhaust hole, so that the airflow is forced to change direction, the position of the airflow impacting the exhaust valve plate is improved, and the flow direction and the stress are optimized; 4. the valve plate with the oblique arc grooves can be applied to piston type refrigeration compressors and also can be applied to other refrigeration compressors.
Drawings
FIG. 1 is a schematic view of the gas flow direction of the vent holes in the valve plate according to the prior art;
fig. 2 is a schematic sectional structure view of an exhaust port oblique arc groove valve plate for a refrigeration compressor according to the present invention;
fig. 3 is a schematic plan view of an exhaust port oblique arc groove valve plate for a refrigeration compressor according to the present invention;
FIG. 4 is a schematic view of the cross-sectional structure (dimension) A-A of FIG. 3;
FIG. 5 is a schematic view of an included angle between a center line of the valve plate and a center line of the exhaust valve plate of the oblique arc chute of the present invention;
FIG. 6 is a schematic view of the fitting structure of the valve plate and the boss piston of the present invention;
FIG. 7 is an enlarged (size) view of the point B in FIG. 6;
FIG. 8 is a schematic perspective view of the boss piston of the present invention;
FIG. 9 is a view showing another structure of a valve plate according to the present invention;
in the figure: 1. a valve plate; 2. an exhaust hole; 3. an exhaust valve plate; 4. a valve plate limiting plate; 5. an oblique arc groove; 6. chamfering; 7. shallow-groove; 8. the central line of the oblique arc groove; 9. the center line of the exhaust valve plate; 10. a boss piston; 11. a boss; 1101. a chamfer plane; 12. a buffer sheet.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "middle", "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The first embodiment is as follows:
as shown in fig. 2 to 4, an exhaust port oblique arc groove valve plate for a refrigeration compressor comprises a valve plate 1, wherein an exhaust hole 2 is formed in the valve plate 1, an oblique arc groove 5 is formed at the inlet end of the exhaust hole 2, and the oblique arc groove 5 is arranged at one side (the left side in fig. 1) close to the fixed end of an exhaust valve plate 3; the upward inclination direction of the center line of the oblique arc groove 5 is consistent with the trend of the opening direction of the exhaust valve plate 3.
The exhaust port oblique arc groove valve plate is simple in structure, easy to process and manufacture, small in air flow resistance and small in influence on an air conveying system. The inclined arc groove 5 is formed in the inlet end (no valve end) of the exhaust hole 2, so that the air can flow conveniently, the air flowing direction is changed, the flow resistance is reduced, the exhaust valve plate 3 is opened more easily, and the exhaust efficiency of the compressor is improved.
In the exhaust stage, high-pressure gas can flow to the exhaust valve plate 3 along the oblique arc groove 5, namely the gas flow has a tendency of flowing from left to right, so that the gas flow is optimized, the exhaust valve plate 3 is opened more quickly, the exhaust stage is advanced, and the purposes of reducing flow resistance, improving exhaust efficiency and improving the performance coefficient of the compressor are achieved.
Specifically, when high-pressure gas passes through the valve plate with the oblique arc groove 5, the exhaust valve block 3 is just opened, the gas flow direction is just attached to the opening, the gas flow direction can curvedly flow towards the opening direction (right side direction) of the exhaust valve block 3 along the oblique arc groove 5, and the whole stress central point of the exhaust valve block 3 is pushed towards the right, so that the exhaust valve block 3 can be opened more quickly and easily.
Compared with the prior art, when the opening force of the high-pressure airflow is the same, the opening moment is larger due to the increase of the force arm, and the opening speed of the exhaust valve plate is higher; or when the moment for opening the exhaust valve plate is the same, the required opening force is smaller and the opening is easier due to the increase of the moment arm.
Further, the circumferential range of the oblique arc groove 5 does not exceed the circumferential range of three quarters of the exhaust holes.
The oblique arc groove 5 cannot be too large and cannot be close to the right side (the open side of the exhaust valve plate 3), so that the air flow is forced to change direction to form an asymmetric space at the inlet end of the exhaust hole 2, the position of the exhaust valve plate 3 impacted by the air flow is improved, and the flow direction and the stress are optimized.
Further, as shown in fig. 4, the depth of the inclined arc groove 5 is H, the length or diameter of the exhaust hole 2 is D, and the ratio of H to D is between 0.1 and 0.5, such as 0.3.
Further, the length of the inclined arc groove 5 is L, the length or the diameter of the exhaust hole 2 is D, and the ratio of L to D is between 0.04 and 0.4, such as 0.1.
Through simulation test and performance test, the influence of the oblique arc groove on the direction and the speed of the air flow under different sizes is researched and analyzed, and a reasonable and standard size numerical range is obtained, namely the size of the oblique arc groove 5 and the size of the exhaust hole 2 are arranged in the range (L/D is 0.1, H/D is 0.3), the air flow resistance and the exhaust performance are good, and the exhaust noise is much smaller than that in the prior art.
Further, the entry end and the exit end of exhaust hole 2 are all chamfered, and the chamfer size of exit end is greater than the chamfer size of entry end.
Further, the outside of discharge valve piece 3 still is equipped with valve block limiting plate 4, valve block limiting plate 4 orientation the one side of exhaust hole 2 is the slope setting and extends forward along the air current discharge direction.
The valve plate limiting plate 4 can limit the opening angle of the exhaust valve plate 3 so as to control the opening angle and size; the valve plate limiting plate 4 extends forwards along the air flow discharging direction to further guide air flow and reduce noise.
Furthermore, the valve plate 1 is provided with a plurality of shallow grooves 7 with different sizes at the position below the exhaust valve plate 3. The provision of these shallow grooves 7 facilitates the repeated closing and opening of the discharge valve plate.
Example two:
the present embodiment provides a skewed arc slot with an offset angle.
Specifically, as shown in fig. 5, an included angle α between a center line of the oblique arc groove 5 and a center line of the exhaust valve plate 3 is 60 degrees. That is to say, in the valve plate overlooking view, an included angle within 75 degrees exists between the central line 8 of the oblique arc groove and the central line 9 of the exhaust valve plate.
The oblique arc groove 5 does not need to be the center line position of the exhaust valve plate 3, can be randomly arranged within the range of 150 degrees, has positive effect in the interval, and if the oblique arc groove 5 is continuously deviated to two sides and even arranged to be close to one side (right side) of the opening of the exhaust valve plate 3, the speed of improving the airflow and optimizing the airflow impact and opening the exhaust valve plate 3 can be obviously influenced, and negative effect can be generated.
Example three:
the present embodiments provide a piston for use with the valve plate.
Specifically, as shown in fig. 6 to 8, a boss piston 10 used in cooperation with the valve plate 1 is further disposed on a surface of the valve plate 1 facing away from the exhaust valve plate 3, a boss 11 is disposed at a position where the boss piston 10 corresponds to the exhaust hole 2, the size of the boss 11 is smaller than that of the exhaust hole 2, and a chamfered surface 1101 is disposed on one side of the boss 11 facing the inclined arc groove 5.
The boss 11 with the setting of scarf 1101, the cooperation the setting of oblique arc groove 5 can further highlight improve the air current, noise reduction, promote the characteristics of exhaust performance, and the effect is more showing.
Further, the boss 11 is a truncated cone-shaped boss; axial height H of the chamfer 11011And radial length L1The ratio of (A) to (B) being between 0.5 and 2, e.g. H1/L 11 is ═ 1; the radial length L of the chamfer 11011The ratio of the inner diameter D of the exhaust hole 2 is 0.1 to 0.5, such as L10.2, the axial height H of the chamfer 11011The ratio of the inner diameter D of the exhaust hole 2 is also between 0.1 and 0.5, such as H1/D＝0.2。
Example four:
the present embodiment provides yet another valve plate structure.
As shown in fig. 9, a valve plate limiting plate 4 is arranged above the valve plate 1, and opposite surfaces of the valve plate 1 and the valve plate limiting plate 4 are respectively recessed to form a space for exhaust and limiting; the exhaust valve plate 3 is arranged between the valve plate 1 and the valve plate limiting plate 4, one end of the exhaust valve plate is fixed, and the other end of the exhaust valve plate is positioned in the space for exhaust limiting and corresponds to the exhaust hole 2; and a buffer sheet 12 is also arranged between the exhaust valve sheet 3 and the valve sheet limiting plate 4.
The arrangement of the buffer sheet 12 can buffer the force of the exhaust valve plate 3 opening and impacting the valve plate limiting plate 4, reduce exhaust noise and improve exhaust airflow.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. An air exhaust port oblique arc groove valve plate for a refrigeration compressor comprises a valve plate, wherein an air exhaust hole is formed in the valve plate, and the air exhaust port oblique arc groove valve plate is characterized in that an oblique arc groove is formed in the inlet end of the air exhaust hole and is arranged on one side close to the fixed end of an air exhaust valve plate; the inclination direction of the center line of the oblique arc groove is consistent with the trend of the opening direction of the exhaust valve plate.
2. A discharge port skewed arc chute valve plate for a refrigerant compressor as set forth in claim 1, wherein said skewed arc chute has a circumferential extent no greater than three-quarters of the circumferential extent of said discharge orifice.
3. A discharge port skewed arc chute valve plate for refrigeration compressors as set forth in claim 1, wherein said skewed arc chute has a depth H, said skewed arc chute has a length L, said discharge orifice has a length or diameter D, the ratio of H to D is between 0.1 and 0.5, and the ratio of L to D is between 0.04 and 0.4.
4. A discharge port skewed slot valve plate for refrigerant compressors as set forth in claim 1, wherein an angle between a centerline of said skewed slot and a centerline of said discharge plate is within ± 75 °.
5. A discharge port skewed arc chute valve plate for a refrigerant compressor as set forth in claim 1, wherein said discharge orifice has chamfered ends at both the inlet end and the outlet end, the chamfered dimension at the outlet end being greater than the chamfered dimension at the inlet end.
6. The vent chute plate of claim 1, further comprising a valve plate retainer disposed on the outer side of the vent valve plate, wherein the valve plate retainer is disposed at an angle toward the vent hole and extends forward in the direction of the discharge of the air flow.
7. A discharge port oblique arc groove valve plate for a refrigeration compressor as recited in claim 1 wherein said valve plate is provided with a plurality of shallow grooves of different sizes at a position below said discharge valve plate.
8. A gas outlet oblique arc groove valve plate for a refrigeration compressor, as recited in claim 1, characterized in that a boss piston is further provided on a side of the valve plate facing away from the gas outlet valve plate, said boss piston is provided with a boss corresponding to the gas outlet hole, the size of the boss is smaller than that of the gas outlet hole, and a chamfer is provided on a side of the boss facing the oblique arc groove.
9. A discharge port skewed arc chute valve plate for a refrigeration compressor as claimed in claim 8, wherein said boss is a frusto-conical boss; the ratio of the axial height to the radial length of the chamfer is between 0.5 and 2; the ratio of the radial length of the chamfer to the inner diameter of the exhaust hole is between 0.1 and 0.5, and the ratio of the axial height of the chamfer to the inner diameter of the exhaust hole is also between 0.1 and 0.5.
10. The vent chute valve plate for a refrigerant compressor of claim 6, wherein a damping sheet is disposed between the vent valve sheet and the sheet retaining plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120579217.8U CN214698253U (en) | 2021-03-22 | 2021-03-22 | Air exhaust port oblique arc groove valve plate for refrigeration compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120579217.8U CN214698253U (en) | 2021-03-22 | 2021-03-22 | Air exhaust port oblique arc groove valve plate for refrigeration compressor |
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| Publication Number | Publication Date |
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| CN214698253U true CN214698253U (en) | 2021-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120579217.8U Active CN214698253U (en) | 2021-03-22 | 2021-03-22 | Air exhaust port oblique arc groove valve plate for refrigeration compressor |
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| CN (1) | CN214698253U (en) |
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2021
- 2021-03-22 CN CN202120579217.8U patent/CN214698253U/en active Active
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