Exhaust structure and compressor

Abstract

The exhaust structure comprises a valve seat and a valve plate, a first groove is formed in the valve seat, a first through hole is formed in the groove bottom of the first groove, the first groove penetrates through the valve seat in the radial direction of the first through hole, the valve plate is arranged opposite to an opening of the first groove, and the valve plate is arranged on the valve seat. A first through hole is formed in the valve plate, a guide column is arranged on the valve plate, the guide column penetrates through the first through hole, and the guide column can move in the first through hole. According to the exhaust check valve, the technical problem that in the prior art, an exhaust check valve plate is prone to deviation in the reciprocating motion process, and consequently the exhaust check valve plate is abraded can be solved.

Description

Technical Field

[0001] The invention belongs to the technical field of air conditioners, and in particular relates to an exhaust structure and a compressor. Background Art

[0002] The compressor is the heart of the air conditioning system, and its performance is directly related to the energy efficiency of the air conditioner. The scroll compressor is a positive displacement compressor. The motor drives the crankshaft to rotate, and the movable scroll is driven by the crankshaft to orbit around the fixed scroll, thereby realizing the periodic change of the closed volume and achieving the purpose of compressing the gas. During the operation of the compressor, when the pressure on the exhaust side is higher than the pressure in the scroll chamber, the refrigerant reflux will cause the compressor to reverse, generate a lot of noise and affect the reliability of the compressor.

[0003] The existing exhaust check structure generally adopts a valve plate with a restraining surface. During the exhaust check process, the valve plate is restrained by the arc surfaces on both sides of the valve seat to reciprocate. There are two problems with this exhaust check structure in actual use:

[0004] (1) The exhaust check valve plate is prone to displacement during reciprocating motion and the contact area between the valve plate and the constraint surface is too small. The valve plate has poor guidance, which easily leads to wear and affects reliability.

[0005] (2) The exhaust check valve plate will impact the upper part of the valve seat and the gasket at a high frequency. Since there is no design to reduce the impact of the valve plate, this high-frequency rigid impact can easily cause the exhaust check valve plate to deform, affecting the life of the exhaust check valve plate and the reliability of the compressor.

[0006] Since the exhaust check valve plate in the prior art is prone to deviation during the reciprocating motion, causing the exhaust check valve plate to wear and affecting the reliability of the exhaust check valve plate, the present invention studies and designs an exhaust structure and a compressor. Summary of the invention

[0007] Therefore, the present invention provides an exhaust structure and a compressor, which can solve the technical problem in the prior art that the exhaust check valve plate is easily offset during the reciprocating motion, resulting in wear of the exhaust check valve plate.

[0008] In order to solve the above problems, the present invention provides an exhaust structure, including: a valve seat and a valve plate, the valve seat is provided with a first groove, the bottom of the first groove is provided with a first through hole, the first groove passes through the valve seat along the radial direction of the first through hole, the valve plate is arranged opposite to the opening of the first groove, the valve plate is provided with a guide column, the guide column passes through the first through hole, and the guide column can move in the first through hole.

[0009] In some embodiments, the valve seat includes a first part and a second part, the first part is arranged on the second part, the first groove is located at the end of the second part facing away from the first part, the second groove is arranged at the end of the first part facing away from the second part, one end of the first through hole is connected with the second groove, the other end of the first through hole is connected with the first groove, the guide column passes through the first through hole and at least partially extends into the second groove, the end of the guide column extending into the second groove is provided with a cover body, and a buffer cavity is formed between the cover body and the bottom of the second groove.

[0010] In some embodiments, the cover body is clearance-fitted with the side wall of the second groove, and a plurality of third through holes are provided on the second portion, and the third through holes are located on the outer side of the first portion.

[0011] In some embodiments, a third groove is disposed at the bottom of the first groove, and the third groove matches the valve plate with a cross section of the third groove as a projection surface.

[0012] In some embodiments, a baffle is disposed at the opening of the second groove, a cavity structure is formed between the baffle and the cover body, and a connecting hole is disposed on the cover body.

[0013] In some embodiments, the valve plate is disposed at one end of the guide column, a fifth groove is disposed at the other end of the guide column, a fixing piece is disposed in the fifth groove, and the cover body is mounted on the guide column through the fixing piece.

[0014] In some embodiments, the cover body includes a third part and a fourth part, the third part is arranged on the fourth part, a fourth groove is arranged at the other end of the guide column, the fifth groove is arranged at the bottom of the fourth groove, and the third part is inserted into the fourth groove.

[0015] In some embodiments, the cross-sections of the fourth groove and the fifth groove are circular, the diameter of the fourth groove is larger than the diameter of the fifth groove, a second through hole is provided on the third part, the second through hole passes through the third part and the fourth part in sequence, and the fixing part passes through the second through hole and then extends into the fifth groove.

[0016] In some embodiments, the groove depth of the fourth groove is the same as the height of the third portion, and the wall thickness of the third portion is the same as the diameter difference between the fourth groove and the fifth groove.

[0017] The present invention also provides a compressor, which comprises the aforementioned exhaust structure.

[0018] An exhaust structure and a compressor provided by the present invention have the following beneficial effects:

[0019] The guide post passes through the first through hole, and the guide post can move in the first through hole. The guide post is guided by the first through hole. When the valve plate opens the exhaust port of the compressor, the guide post moves upward, and the air flow is discharged from both sides of the valve seat through the first groove. After the exhaust is completed, the guide post moves downward, and the valve plate continues to close the exhaust port of the compressor. The guide post cooperates with the opening in the first through hole to constrain the reciprocating motion of the exhaust valve plate, thereby avoiding the exhaust check valve plate from easily deviating during the reciprocating motion. The valve plate has poor guiding performance, which can easily cause the valve plate to wear and affect the reliability of the valve plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. The drawings described below are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0021] Figure 1 is a schematic structural diagram of the exhaust structure of the present invention;

[0022] Figure 2 The structure of the valve seat in the exhaust structure of the present invention is schematically shown. Figure 1 ;

[0023] Figure 3 The structure of the valve seat in the exhaust structure of the present invention is schematically shown. Figure 2 ;

[0024] Figure 4 The structure of the guide pillar in the exhaust structure of the present invention is schematically shown. Figure 1 ;

[0025] Figure 5 The structure of the guide pillar in the exhaust structure of the present invention is schematically shown. Figure 2 ;

[0026] Figure 6 The structure of the cover body in the exhaust structure of the present invention is schematically shown. Figure 1 ;

[0027] Figure 7 The structure of the cover body in the exhaust structure of the present invention is schematically shown. Figure 2 ;

[0028] Figure 8 It is a schematic diagram of the structure of the gasket in the exhaust structure of the present invention.

[0029] The accompanying drawings are marked as follows:

[0030] 1. Valve seat; 2. Guide column; 3. Cover body; 4. Buffer chamber; 5. Gasket; 6. Static scroll disk; 7. Fixing piece; 8. Valve plate; 9. Fifth groove; 10. Second groove; 11. First groove; 12. Third through hole; 13. Third groove; 14. First part; 15. Second part; 16. Fourth groove; 17. Second through hole; 18. Third part; 19. Fourth part; 20. First through hole. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the devices or elements referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention. The directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0033] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0034] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0035] See also Figure 1-8 As shown, according to an embodiment of the present invention, there is provided an exhaust structure, comprising: a valve seat 1 and a valve plate 8, the valve seat 1 being provided with a first groove 11, the bottom of the first groove 11 being provided with a first through hole 20, the first groove 11 passing through the valve seat 1 along the radial direction of the first through hole 20, the valve plate 8 being arranged opposite to the opening of the first groove 11, the valve plate 8 being provided with a guide column 2, the guide column 2 passing through the first through hole 20, and the guide column 2 being able to move in the first through hole 20. In this technical solution, along the radial direction of the first through hole 20, the first groove 11 passes through the valve seat 1, and the first groove 11 is arranged at one end of the valve seat 1. The valve seat 1 has a first side wall and a second side wall relative to each other. The first groove 11 passes through the first side wall and the second side wall, so that one end of the valve seat 1 is in a U-shaped structure, and the guide column 2 passes through the first through hole 20. The guide column 2 can move in the first through hole 20, and the guide column 2 is guided by the first through hole 20. When the valve plate 8 opens the exhaust port of the compressor, the guide column 2 moves upward, and the air flow is discharged from both sides of the valve seat 1 through the first groove 11. After the exhaust is completed, the guide column 2 moves downward, and the valve plate 8 continues to close the exhaust port of the compressor. The guide column 2 cooperates with the opening in the first through hole 20 to constrain the reciprocating motion of the exhaust valve plate 8, thereby avoiding the problem that the exhaust check valve plate is easily offset during the reciprocating motion, and the valve plate has poor guiding performance, which easily causes the valve plate to wear and affects the reliability of the valve plate.

[0036] In some embodiments, the valve seat 1 includes a first portion 14 and a second portion 15, the first portion 14 is arranged on the second portion 15, the first groove 11 is located at one end of the second portion 15 facing away from the first portion 14, the first portion 14 is provided with a second groove 10 at one end facing away from the second portion 15, one end of the first through hole 20 is connected to the second groove 10, the other end of the first through hole 20 is connected to the first groove 11, the guide post 2 at least partially extends into the second groove 10 after passing through the first through hole 20, the end of the guide post 2 extending into the second groove 10 is provided with a cover body 3, and a buffer cavity 4 is formed between the cover body 3 and the groove bottom of the second groove 10. In this technical solution, a buffer cavity 4 is formed between the cover body 3 and the groove bottom of the second groove 10, and the guide post 2 cooperates with the first through hole 20 to realize the movement guidance of the valve plate 8. The contact form between the guide post 2 and the first through hole 20 is surface contact and is easier to lubricate, which can effectively avoid the problem of valve plate wear in the existing structure. The cover body 3 is fixedly connected to the guide post 2, and the cover body 3 and the bottom of the second groove 10 form a hollow buffer chamber 4 with a buffering effect. When the valve plate 8 rises, the cover body 3 and the guide post 2 rise synchronously, the volume of the buffer chamber 4 increases, the pressure in the buffer chamber 4 decreases, and the movement of the valve plate 8 slows down until the movement stops; when the valve plate 8 descends, the cover body 3 and the guide post 2 descend synchronously, the volume of the buffer chamber 4 decreases, the pressure in the buffer chamber 4 increases, and the movement of the valve plate slows down until the movement stops. When the valve plate 8 reciprocates, the volume of the buffer chamber 4 causes the air pressure in the chamber to change, and the pressure difference inside and outside the buffer chamber 4 slows down the impact of the valve plate 8 and the valve seat 1 and the gasket 5. When the movement of the valve plate 8 is basically completed, the gas inside and outside the buffer chamber 4 are exchanged with the outside to balance the pressure difference inside and outside, so as not to affect the movement of the valve plate 8 in the next cycle. The wear problem of the exhaust check valve plate during reciprocating motion and the deformation and damage due to rigid impact are solved, and the wear and deformation of the exhaust check valve plate under high-frequency reciprocating motion are avoided. It effectively improves the service life of the exhaust check valve and the reliability of the compressor.

[0037] In some embodiments, the cover body 3 and the side wall of the second groove 10 are clearance-matched, and the second part 15 is provided with a plurality of third through holes 12, and the third through holes 12 are located outside the first part 14. In this technical solution, the cover body 3 and the side wall of the second groove 10 are clearance-matched, and there is a gap of a certain size between the cover body 3 and the side wall of the second groove 10. A passage of a certain size for gas exchange between the inside of the air pressure chamber and the outside can also be opened on the cover body 3. The size of the gap enables the valve plate to slowly balance the pressure inside the buffer chamber 4 and the pressure outside the buffer chamber 4 after the exhaust check valve movement is basically completed. However, when the exhaust check valve moves and the volume of the buffer chamber 4 changes, the pressure inside the buffer chamber 4 can still produce a certain significant change. After the compressor works normally, the gaseous refrigerant is filled in the compressor. The cover body 3 and the side wall of the second groove 10 are clearance-matched. Under the action of the pressure difference between the inside and outside of the buffer chamber 4, the airflow at the upper cover of the compressor slowly flows out or flows in from the gap between the cover body 3 and the second groove 10. The size of the gap between the cover body 3 and the second groove 10 is controlled so that it is not so large that the part of the airflow whose volume changes is completely discharged or discharged into the buffer chamber 4 during the movement of the exhaust check valve. Instead, the pressure inside and outside the buffer chamber 4 is slowly balanced after the movement ends. The third through hole 12 can be a threaded hole, and the valve seat 1 is connected to the fixed scroll plate by a screw through the third through hole 12.

[0038] In some embodiments, a third groove 13 is provided at the bottom of the first groove 11, and the cross section of the third groove 13 is used as a projection surface, and the third groove 13 matches the valve plate 8. In this technical solution, the cross section of the third groove 13 is used as a projection surface, and the third groove 13 matches the valve plate 8. When the valve plate 8 moves upward, under the action of the guide column 2, the valve plate 8 will enter the third groove 13. At this time, the third groove 13 and the valve plate 8 form a cavity structure. As the valve plate 8 rises, the volume in the cavity changes, and the pressure increases, which avoids the problem of deformation and damage caused by rigid impact when the valve plate impacts the upper part of the valve seat and the gasket at high frequency. Wear and deformation of the exhaust check valve plate under high-frequency reciprocating motion are avoided. The service life of the exhaust check valve plate is effectively improved and the reliability of the compressor is improved.

[0039] In some embodiments, a baffle is provided at the opening of the second groove 10, a cavity structure is formed between the baffle and the cover body 3, and a connecting hole is provided on the cover body 3. In this technical solution, a cavity structure is formed between the baffle and the cover body 3, and the cavity structure is connected with the buffer cavity 4 through the connecting hole, forming a double buffer structure for the valve plate 8, further avoiding the problem of valve plate wear in the existing structure.

[0040] In some embodiments, the valve plate 8 is provided at one end of the guide column 2, and a fifth groove 9 is provided at the other end of the guide column 2. A fixing member 7 is provided in the fifth groove 9, and the cover body 3 is mounted on the guide column 2 through the fixing member 7. In this technical solution, the inner wall of the fifth groove 9 is provided with a thread, the fixing member 7 is a screw, and the cover body 3 is fixedly connected to the guide column 2 through the screw, thereby improving the stability of the cover body 3 and the fixing member 7.

[0041] In some embodiments, the cover body 3 includes a third portion 18 and a fourth portion 19, the third portion 18 is disposed on the fourth portion 19, the other end of the guide column 2 is provided with a fourth groove 16, the fifth groove 9 is disposed at the bottom of the fourth groove 16, and the third portion 18 is inserted into the fourth groove 16. In this technical solution, by inserting the third portion 18 into the fourth groove 16, a buffer cavity 4 is formed between the fourth portion 19 and the bottom of the second groove 10, thereby further improving the connection strength between the cover body 3 and the fixing member 7.

[0042] In some embodiments, the cross-sections of the fourth groove 16 and the fifth groove 9 are circular, the diameter of the fourth groove 16 is larger than the diameter of the fifth groove 9, the third portion 18 is provided with a second through hole 17, the second through hole 17 sequentially penetrates the third portion 18 and the fourth portion 19, and the fixing member 7 penetrates the second through hole 17 and then extends into the fifth groove 9. In this technical solution, the second through hole 17 is a threaded hole, and the fixing member 7 is threadedly connected to the cover body 3 and the fifth groove 9 at the same time, so that the connection between the cover body 3 and the guide column 2 is more stable.

[0043] In some embodiments, the groove depth of the fourth groove 16 is the same as the height of the third portion 18, and the wall thickness of the third portion 18 is the same as the diameter difference between the fourth groove 16 and the fifth groove 9. In this technical solution, the groove depth of the fourth groove 16 is the same as the height of the third portion 18, and the wall thickness of the third portion 18 is the same as the diameter difference between the fourth groove 16 and the fifth groove 9. Preferably, the second through hole 17 has the same diameter as the fifth groove 9, and the central axis of the second through hole 17 coincides with the fifth groove 9, which facilitates the installation of the fixing member 7 and improves the assembly efficiency of the fixing member 7 and the cover body 3.

[0044] The present invention also provides a compressor, comprising the above-mentioned exhaust structure.

[0045] The compressor includes a static scroll disk 6, an exhaust structure is arranged on the static scroll disk 6, a valve plate 8 is opposite to the exhaust hole on the static scroll disk 6, a gasket 5 is arranged between the valve seat 1 and the static scroll disk 6, the valve seat 1 and the static scroll disk 6 are connected by screws, and the screws are connected to the static scroll disk 6 after passing through the third through hole 12. Furthermore, a connecting hole opposite to the third through hole 12 is arranged on the gasket 5, and the screws are connected to the static scroll disk 6 after passing through the third through hole 12 and the connecting hole in sequence, and an air outlet opposite to the valve plate 8 is arranged on the gasket 5, and the valve plate 8 can be extended into the air outlet to close the exhaust port of the static scroll disk 6.

[0046] It is easy for those skilled in the art to understand that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0047] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present invention. These improvements and variations should also be regarded as the protection scope of the present invention.

Claims

1. An exhaust structure, characterized in that: include: A valve seat (1) and a valve plate (8), wherein the valve seat (1) is provided with a first groove (11), a first through hole (20) is provided at the bottom of the first groove (11), and the first groove (11) passes through the valve seat (1) along the radial direction of the first through hole (20), the valve plate (8) is arranged opposite to the opening of the first groove (11), and a guide column (2) is provided on the valve plate (8), the guide column (2) passes through the first through hole (20), and the guide column (2) can move in the first through hole (20).

2. The exhaust structure according to claim 1, characterized in that: The valve seat (1) comprises a first part (14) and a second part (15), the first part (14) being arranged on the second part (15), the first groove (11) being located at an end of the second part (15) facing away from the first part (14), the second groove (10) being arranged at an end of the first part (14) facing away from the second part (15), one end of the first through hole (20) being connected to the second groove (10), the other end of the first through hole (20) being connected to the first groove (11), the guide column (2) passing through the first through hole (20) and at least partially extending into the second groove (10), the end of the guide column (2) extending into the second groove (10) being provided with a cover body (3), and a buffer cavity (4) being formed between the cover body (3) and the groove bottom of the second groove (10).

3. The exhaust structure according to claim 2, characterized in that: The cover body (3) is clearance-matched with the side wall of the second groove (10); a plurality of third through holes (12) are provided on the second part (15); and the third through holes (12) are located outside the first part (14).

4. The exhaust structure according to claim 2, characterized in that: A third groove (13) is arranged at the groove bottom of the first groove (11), and the cross section of the third groove (13) is used as a projection surface, and the third groove (13) matches the valve plate (8).

5. The exhaust structure according to claim 2, characterized in that: A baffle is provided at the opening of the second groove (10), a cavity structure is formed between the baffle and the cover body (3), and a communication hole is provided on the cover body (3).

6. The exhaust structure according to claim 2, characterized in that: The valve plate (8) is arranged at one end of the guide column (2), and a fifth groove (9) is arranged at the other end of the guide column (2). A fixing member (7) is arranged in the fifth groove (9), and the cover body (3) is mounted on the guide column (2) via the fixing member (7).

7. The exhaust structure according to claim 6, characterized in that: The cover body (3) comprises a third part (18) and a fourth part (19), the third part (18) being arranged on the fourth part (19), the other end of the guide column (2) being provided with a fourth groove (16), the fifth groove (9) being arranged at the bottom of the fourth groove (16), and the third part (18) being inserted into the fourth groove (16).

8. The exhaust structure according to claim 7, characterized in that: The cross-sections of the fourth groove (16) and the fifth groove (9) are circular, the diameter of the fourth groove (16) is larger than the diameter of the fifth groove (9), the third portion (18) is provided with a second through hole (17), the second through hole (17) passes through the third portion (18) and the fourth portion (19) in sequence, and the fixing member (7) passes through the second through hole (17) and then extends into the fifth groove (9).

9. The exhaust structure according to claim 7, characterized in that: The groove depth of the fourth groove (16) is the same as the height of the third portion (18), and the wall thickness of the third portion (18) is the same as the diameter difference between the fourth groove (16) and the fifth groove (9).

10. A compressor, characterized in that: The exhaust structure comprises the exhaust structure according to any one of claims 1 to 9.

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