CN220566662U - Exhaust valve structure of compressor - Google Patents
Exhaust valve structure of compressor Download PDFInfo
- Publication number
- CN220566662U CN220566662U CN202321822882.0U CN202321822882U CN220566662U CN 220566662 U CN220566662 U CN 220566662U CN 202321822882 U CN202321822882 U CN 202321822882U CN 220566662 U CN220566662 U CN 220566662U
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- hole
- exhaust valve
- limiting plate
- positioning
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- 238000007789 sealing Methods 0.000 description 9
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000004378 air conditioning Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
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Abstract
The utility model discloses an exhaust valve structure of a compressor.A fixed vortex is provided with a threaded hole and a long hole-shaped groove, and the long axis of the long hole-shaped groove is positioned in the X-axis direction; the exhaust valve plate is provided with a positioning hole II and a first threaded straight hole, and the positioning hole II and the first threaded straight hole are long holes with long shafts in the X-axis direction; the limiting plate is provided with a second threaded straight hole, the limiting plate is provided with a positioning piece, and the positioning piece and the second threaded straight hole are both positioned in the X-axis direction; the locating piece of limiting plate inserts in the slot hole shape recess of locating hole two, the fixed vortex of discharge valve block in proper order. By changing the shapes of the exhaust valve plate, the limiting plate and the mounting matching holes on the fixed scroll, the distance gap in the Y-axis direction is reduced while the accumulated tolerance of the sizes of the parts in the X-axis direction is ensured to be absorbed, the offset in the rotation direction of the exhaust valve plate is reduced, and the exhaust valve structure with high assembly precision is realized.
Description
Technical Field
The utility model relates to the technical field of compressors, in particular to an exhaust valve structure of a compressor.
Background
Fig. 4-a is a schematic front view of the discharge valve plate 2 fixed to the back plate of the fixed scroll 1 of the compression mechanism. The fixed scroll 1 is provided with an exhaust hole 11, an advance exhaust hole I12 and an advance exhaust hole II 13, and is provided with two positioning holes I16 and a threaded hole 15. The threaded hole 15 is located approximately at the center of the line connecting the two positioning holes 16.
Fig. 4-B is a schematic view of the discharge valve plate 2. The exhaust valve plate 2 is provided with two positioning holes II 23 and a first threaded straight hole 24. In the direction approximately perpendicular to the line (X axis) between the second positioning hole 23 and the first threaded straight hole 24, a first support arm 21 and a second support arm 22 are provided, and a first sealing portion 25, a second sealing portion 26 and a third sealing portion 27 for closing the first exhaust hole 11, the first exhaust hole 12 and the second exhaust hole 13 are provided.
Fig. 4-C,4-D are schematic views in two directions of the limiting plate 3. The limiting plate 3 has two circular protrusions 31 for positioning and a circular second threaded straight hole 32. The circular protrusion 31 is provided in the negative Z-axis direction, and the positive Z-axis direction is provided with a lift portion 33 for restricting the opening of the exhaust valve plate 2.
According to the sequence of the limiting plate 3, the exhaust valve plate 2 and the fixed vortex 1, two circular protrusions 31 on the limiting plate 3 are inserted into two first positioning holes 16 of the fixed vortex 1 through two second positioning holes 23 of the exhaust valve plate 2, so that the exhaust valve plate 2 is positioned at the correct positions of the closable exhaust hole 11, the first advance exhaust hole 12 and the second advance exhaust hole 13. Meanwhile, the fixing bolt is screwed with the threaded hole 15 according to the sequence of the second threaded straight hole 32 and the first threaded straight hole 24, and the limiting plate 3 and the exhaust valve plate 2 are fixed on the fixed scroll 1.
The outer diameter of the circular protrusion 31 is set smaller than the aperture of the positioning hole two 23 of the discharge valve plate 2 and the positioning hole one 16 of the fixed scroll 1, and the circular protrusion 31 is engaged with the positioning hole two 23 and the positioning hole one 16, thereby positioning the relative position of the discharge valve plate 2 with respect to the fixed scroll 1. In order to improve the assembly accuracy, it is desirable that the difference between the outer diameter of the circular boss 31 and the diameters of the second positioning holes 23 and the first positioning holes 16 is as small as possible. However, considering the clearance tolerance of the threaded hole 15 and the first positioning hole 16 on the fixed scroll 1 in the X direction, the clearance tolerance of the first threaded straight hole 24 and the second positioning hole 23 on the discharge valve plate 2, and the clearance tolerance of the second threaded straight hole 32 and the two circular protrusions 31 on the limiting plate 3 in the X direction, the difference in the diameters of the circular protrusions 31, the second positioning holes 23 and the first positioning holes 16 can only be reduced to the level that the circular protrusions can be assembled.
The radial clearance between the circular boss 31 and each of the second positioning holes 23 and the first positioning hole 16, which is determined in response to the pitch shift in the X direction, also affects the position shift in the Y direction. Meanwhile, the discharge valve 2 may be rotationally offset from the fixed scroll 1 with respect to a fulcrum at a point where one of the two circular protrusions 31 or the fixing bolts engages with each of the engagement holes. The distance between the X directions is short, so that the angle of the rotation offset is not too large; however, since the exhaust hole 11, the first advance exhaust hole 12, and the second advance exhaust hole 13, which should be closed by the exhaust valve plate 2, are arranged substantially in the Y-axis direction, the influence of the positional deviation is large even with a small rotation angle.
Therefore, the shape of each of the sealing portions 25, 26, 27 of the exhaust valve sheet 2 needs to be determined in consideration of the rotational displacement at the time of assembling the exhaust valve sheet 2. However, if the positional accuracy is poor, the shapes of the first seal portion 25, the second seal portion 26, and the third seal portion 27 become gradually larger, and the gap between the first seal portion 25 and the second seal portion 26, or the gap between the first seal portion 25 and the third seal portion 27 becomes gradually smaller, which poses a problem that it is difficult to manufacture the exhaust valve sheet 2 by press working.
Disclosure of Invention
The present utility model is directed to solving the above-mentioned problems and provides an exhaust valve structure of a compressor.
In order to solve the technical problems, the technical scheme of the utility model is as follows: an exhaust valve structure of a compressor comprises an exhaust valve plate and a limiting plate, wherein the exhaust valve plate and the limiting plate are fixed on a fixed vortex through a fixing bolt; the fixed vortex is provided with a threaded hole and a long hole-shaped groove, and the long axis of the long hole-shaped groove is positioned in the X axis direction; the exhaust valve plate is provided with a positioning hole II and a first threaded straight hole, and the positioning hole II and the first threaded straight hole are long holes with long shafts in the X-axis direction; the limiting plate is provided with a second threaded straight hole, the limiting plate is provided with a positioning piece, and the positioning piece and the second threaded straight hole are both positioned in the X-axis direction; the locating piece of limiting plate inserts in locating hole two of air discharge valve block, in the slot hole shape recess of fixed vortex in proper order, and fixing bolt passes the straight hole of second screw thread of limiting plate, the straight hole of first screw thread of air discharge valve block and fixed vortex threaded hole threaded connection in proper order.
Further, the locating piece is a circular protrusion, and the circular protrusion is fixed on the surface of the limiting plate.
Further, the locating piece is a locating pin, and the locating pin is inserted into the long hole of the limiting plate.
According to the exhaust valve structure, the shapes of the mounting matching holes on the exhaust valve plate, the limiting plate and the fixed vortex are changed, so that the accumulated tolerance of the sizes of all parts in the X-axis direction is ensured to be absorbed, the distance gap in the Y-axis direction is reduced, the offset in the rotation direction of the exhaust valve plate is reduced, and the exhaust valve structure with high assembly precision is realized. Meanwhile, the locating pin is used for replacing the bulge on the limiting plate, and the exposed height of the locating pin is detected, so that the assembly accuracy is ensured, and meanwhile, the leakage of the exhaust valve plate can be monitored and prevented.
Drawings
FIG. 1 is an axial cross-sectional view of an electric compressor according to an embodiment of the present utility model;
FIGS. 2-A and 3-A are schematic views of non-orbiting scrolls according to first and second embodiments of the utility model, respectively;
fig. 2-B and fig. 3-B are schematic views of an exhaust valve sheet according to a first embodiment and a second embodiment of the present utility model, respectively;
FIGS. 2-C and 3-C are top views of a retainer plate according to a first and a second embodiment of the present utility model, respectively;
FIG. 2-D is a side view of a retainer plate according to a first embodiment of the present utility model;
FIGS. 2-E and 3-D are X-axis cross-sectional views of the exhaust valve structures of the first and second embodiments of the present utility model, respectively;
FIG. 4-A is a schematic view of a non-orbiting scroll commonly used today;
FIG. 4-B is a schematic view of a conventional exhaust valve sheet;
FIG. 4-C is a top view of a retainer plate currently in common use;
fig. 4-D is a side view of a limiting plate currently in common use.
Wherein 1-vortex is fixed; 2-an exhaust valve plate; 3-limiting plates; 4-fixing bolts; 5-orbiting scroll; 6-a main shaft; 7-a stator; 8-a rotor; 9 a-bearing one; 9 b-a second bearing; 11-exhaust holes; 12-first advance exhaust hole; 13-an advance exhaust hole II; 15-a threaded hole; 16-positioning a first hole; 17-slot-shaped grooves; 18-a cylindrical recess; 21-support arm one; 22-a second supporting arm; 23-positioning holes II; 24-a first threaded straight bore; 25-first seal; 26-second seal part; 27-sealing part III; 31-circular protrusions; 32-a second threaded straight bore; 33-lift section; 34-long holes; 50-a housing; 50 a-suction pipe; 51-an exhaust end cap; 51 a-an exhaust pipe; 60-exhausting cavity; 100-locating pins.
Detailed Description
The following describes the embodiments of the present utility model further with reference to the drawings.
The exhaust valve structure of the compressor comprises an exhaust valve plate 2 and a limiting plate 3, wherein the exhaust valve plate 2 and the limiting plate 3 are fixed on a fixed scroll 1 through a fixing bolt 4; the fixed scroll 1 is provided with a threaded hole 15 and a long hole-shaped groove 17, and the long axis of the long hole-shaped groove 17 is positioned in the X axis direction; the exhaust valve plate 2 is provided with a positioning hole II 23 and a first threaded straight hole 24, and the positioning hole II 23 and the first threaded straight hole 24 are long holes with long shafts in the X-axis direction; the limiting plate 3 is provided with a second threaded straight hole 32, the limiting plate 3 is provided with a positioning piece, and the positioning piece and the second threaded straight hole 32 are both positioned in the X-axis direction; the locating piece of limiting plate 3 inserts in locating hole two 23 of discharge valve piece 2, decides in the slot hole shape recess 17 of vortex 1 in proper order, and fixing bolt 4 passes the straight hole 32 of second screw thread of limiting plate 3, the straight hole 24 of first screw thread of discharge valve piece 2 and decides the screw hole 15 threaded connection of vortex 1 in proper order. The positioning piece can be a circular protrusion 31, the circular protrusion 31 is fixed on the surface of the limiting plate 3, the positioning piece can also be a positioning pin 100, and the positioning pin 100 is inserted into the long hole 34 of the limiting plate 3.
Embodiment one:
as shown in fig. 1, the compressor includes a housing 50, which is slightly cylindrical, and a discharge end cap 51. The housing 50 is connected to an air intake duct 50a of the air conditioning system, and the exhaust end cover 51 is connected to an exhaust duct 51a of the air conditioning system.
The stator 7 and the rotor 8 are mounted inside the housing 50. The rotor 8 is sleeved with a stator 7, and is fixedly connected with the main shaft 6, and two ends of the main shaft 6 are respectively supported by a first bearing 9a and a second bearing 9b for rotary motion. The movable scroll 5 and the fixed scroll 1 are disposed in this order on the tip of the main shaft 6 on the second bearing 9b side. The exhaust end of the fixed scroll 1 is sequentially provided with an exhaust valve plate 2, a limiting plate 3, and the limiting plate 3 and the exhaust valve plate 2 are fixed at the correct position of the fixed scroll 1 through a fixing bolt 4. A discharge chamber 60 is formed between the fixed scroll 1 and the discharge end cover 51. The movable scroll 5 is engaged with the fixed scroll 1, and rotates with the main shaft 6, so that the refrigerant sucked from the suction pipe 50a is compressed and discharged into the discharge chamber 60, and then enters the air conditioning system pipe via the discharge pipe 51 a.
As shown in fig. 2-a, the fixed scroll 1 includes a discharge hole 11, a first advance discharge hole 12, and a second advance discharge hole 13 at about the center. At the same time, a threaded hole 15 for connecting with the fixing bolt 4 and a slot-shaped groove 17 for clamping with the limiting plate 3 are arranged. The screw hole 15 and the long hole-shaped groove 17 have an X axis in the long axis direction.
As shown in fig. 2-B, the discharge valve plate 2 is provided with a first sealing part 25, a second sealing part 26 and a third sealing part 27 for sealing the discharge hole 11, the first advance discharge hole 12 and the second advance discharge hole 13 on the fixed scroll 1. And a second positioning hole 23 for being engaged with the limiting plate 3 and a first threaded straight hole 24 for being engaged with the fixing bolt 4 are arranged. The second positioning hole 23 and the first threaded straight hole 24 are long holes, and the long axis direction is the long axis direction in the X axis direction of the connecting line.
As shown in fig. 2-C and 2-D, the above-mentioned limiting plate 3 is provided with a lift portion 33, and is also provided with a second threaded straight hole 32 fitted with the fixing bolt 4, and a circular protrusion 31 engaged with the long hole-shaped recess 17 of the fixed scroll 1. The circular protrusion 31 is disposed in the negative Z-axis direction. The exhaust valve plate 2 is normally sealed with the exhaust hole 11, the first advance exhaust hole 12 and the second advance exhaust hole 13 until the pressure in the compression chamber is greater than the pressure in the exhaust chamber 60. The opening degree of the exhaust valve sheet 2 is adjusted by the lift portion 33 in the positive Z-axis direction.
As shown in fig. 2-E, to ensure that the outer peripheral shape of the discharge valve plate 2 does not collide with the outer peripheral corner of the limiting plate 3 when opening and closing, the outer shape of the limiting plate 3 is slightly larger than that of the discharge valve plate 2. The amount of the diametrical clearance between the outer diameter of the fixing bolt 4 and the first and second straight threaded holes 24 and 32 is equal to the difference between the long diameter lengths of the first and second straight threaded holes 24 and 32 and the diameter of the fixing bolt 4, that is, the first movable amount, that is, the state in which the air discharge valve plate 2 and the limiting plate 3 are movable in both positive and negative directions of the X axis with respect to the central axis (X axis origin in fig. 2-E) of the fixing bolt 4.
Similarly, the clearance between the outer diameter of the circular boss 31 and the second positioning hole 23 in the long axis direction is a second movable amount, and the circular boss 31 can be moved both in the positive direction and in the negative direction of the X axis.
The first and second movable amounts are amounts necessary for absorbing the respective distance dimensions in the X-axis direction and the respective component accumulation tolerances, that is, the amounts of deviation of the position accuracy that must be allowed.
In the present embodiment, each hole and recess engaged with the fixing bolt 4 and the circular boss 31 has a long hole shape having a long axis in the X-axis direction, and thus has a movement amount in the X-axis direction that can absorb the tolerance of the component size. However, it is sufficient that the clearance amount capable of absorbing the outer diameter tolerance of the fixing bolt 4 and the circular boss 31 exists in the Y-axis direction, and the accumulated amount of the clearance tolerance is not required to be considered. Therefore, the rotational deviation about either the fixing bolt 4 or the circular boss 31 can be greatly reduced, and a compressor having a high-precision exhaust valve device can be realized.
Embodiment two:
as shown in fig. 3-a, since the positioning pin 100 is used, the shape of the long hole-shaped recess 17 of the fixed scroll 1 in the first embodiment is changed to the cylindrical recess 18, and the depth thereof is the dimension h3 as shown in fig. 3-D. As shown in fig. 3-C, the circular protrusion 31 on the limiting plate 3 becomes a long hole 34 having a long axis in the X-axis direction. And the structure of the exhaust valve plate 2 is the same as that in the first embodiment (as shown in fig. 3-B). The positioning pin 100 with the length H is inserted into the cylindrical groove 18 on the fixed scroll 1 through the second positioning hole 23 with the long hole shape on the exhaust valve plate 2 and the long hole 34 on the limiting plate 3, and is fixed by the fixing bolt 4 and then pulled out, thus completing the assembly. Fig. 3-D is a schematic cross-sectional X-axis view of the exhaust valve structure assembled using the dowel pin 100.
The positional accuracy of the exhaust valve sheet 2 in this embodiment is the same as that in the first embodiment, except that the circular protrusion 31 of the limiting plate 3 becomes the positioning pin 100. As shown in fig. 3-D, the outer shape of the limiting plate 3 is also larger than that of the exhaust valve plate 2, so that in the first embodiment, it is impossible to see whether the exhaust valve plate 2 is neglected or not after assembly. However, in the second embodiment, the accuracy of the depth h3 of the cylindrical recess 18 of the fixed scroll 1 can be controlled, and after assembly, the height difference h2 between the positioning pin 100 and the limiting plate 3 can be detected to determine whether the discharge valve plate 2 is neglected to be installed. Even if the depth h3 of the cylindrical recess 18 of the fixed scroll 1 is more accurate than the thickness of the discharge valve plate 2, it is possible to determine whether the discharge valve plate 2 is missed by detecting the difference between h1 and h 2. Therefore, the compressor with the exhaust valve structure has high positioning precision and can prevent the valve plate from being neglected to be assembled.
As described above, according to the present utility model, a compressor having a high assembly accuracy exhaust valve structure can be provided. Further, a compressor having an exhaust valve device that has high positioning accuracy and can detect whether or not the exhaust valve plate is missing during assembly can be provided.
The above embodiment is described by the scroll compression mechanism using the exhaust valve plate which closes one exhaust hole and 1 pair of advance exhaust holes and is integrated, but the multi-valve plate structure, the presence or absence of advance exhaust holes, or other compression mechanisms may be similarly implemented.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should be covered by the protection scope of the present utility model by making equivalents and modifications to the technical solution and the inventive concept thereof.
Claims (3)
1. The exhaust valve structure of the compressor is characterized by comprising an exhaust valve plate (2) and a limiting plate (3), wherein the exhaust valve plate (2) and the limiting plate (3) are fixed on a fixed scroll (1) through fixing bolts (4); a threaded hole (15) and a long hole-shaped groove (17) are formed in the fixed scroll (1), and the long axis of the long hole-shaped groove (17) is positioned in the X-axis direction; the exhaust valve plate (2) is provided with a positioning hole II (23) and a first threaded straight hole (24), and the positioning hole II (23) and the first threaded straight hole (24) are long holes with long shafts in the X-axis direction; a second threaded straight hole (32) is formed in the limiting plate (3), a positioning piece is arranged on the limiting plate (3), and the positioning piece and the second threaded straight hole (32) are both positioned in the X-axis direction; the locating piece of limiting plate (3) inserts in proper order in locating hole two (23) of discharge valve block (2), decide slot hole shape recess (17) of vortex (1), and fixing bolt (4) pass second screw thread straight hole (32) of limiting plate (3), the first screw thread straight hole (24) of discharge valve block (2) and decide screw hole (15) threaded connection of vortex (1) in proper order.
2. The exhaust valve structure of the compressor according to claim 1, wherein the positioning member is a circular protrusion (31), and the circular protrusion (31) is fixed on the surface of the limiting plate (3).
3. The exhaust valve structure of the compressor according to claim 1, wherein the positioning member is a positioning pin (100), and the positioning pin (100) is inserted into the long hole (34) of the limiting plate (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321822882.0U CN220566662U (en) | 2023-07-12 | 2023-07-12 | Exhaust valve structure of compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321822882.0U CN220566662U (en) | 2023-07-12 | 2023-07-12 | Exhaust valve structure of compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220566662U true CN220566662U (en) | 2024-03-08 |
Family
ID=90087438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321822882.0U Active CN220566662U (en) | 2023-07-12 | 2023-07-12 | Exhaust valve structure of compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220566662U (en) |
-
2023
- 2023-07-12 CN CN202321822882.0U patent/CN220566662U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |