Exhaust structure, compressor

Abstract

This invention provides an exhaust structure and a compressor. The exhaust structure includes a valve seat and a valve plate. The valve seat has a first groove, and the bottom of the first groove has a first through hole. The first groove penetrates the valve seat radially along the first through hole. The valve plate is arranged opposite to the opening of the first groove. The valve plate has a guide post, which penetrates the first through hole and is movable within the first through hole. According to this invention, the technical problem of exhaust check valve plates easily shifting during reciprocating motion, leading to wear of the exhaust check valve plates, can be solved.

Description

Technical Field

[0001] This invention belongs to the field of air conditioner technology, specifically relating to an exhaust structure and a compressor. Background Technology

[0002] The compressor is the heart of an air conditioning system, and its performance directly affects the air conditioner's energy efficiency ratio. Scroll compressors are positive displacement compressors. An electric motor drives a crankshaft to rotate, and the moving scroll revolves around a stationary scroll under the crankshaft's influence, thus achieving periodic changes in the sealed volume and compressing the gas. During operation, if the pressure on the discharge side exceeds the pressure inside the scroll chamber, refrigerant backflow can cause the compressor to reverse, generating significant noise and affecting its reliability.

[0003] Existing exhaust check mechanisms typically employ a valve plate coupled with a constraint surface. During the exhaust check process, the valve plate reciprocates under the constraint of the arc surfaces on both sides of the valve seat. This exhaust check mechanism presents two problems in practical 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 guiding properties, which can easily lead to wear and affect 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] Because the exhaust check valve plate in the prior art is prone to displacement during reciprocating motion, which leads to wear of the exhaust check valve plate and affects its reliability, this 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 that can solve the technical problem in the prior art where the exhaust check valve plate is prone to displacement during reciprocating motion, leading to wear of the exhaust check valve plate.

[0008] To solve the above problems, the present invention provides an exhaust structure, including: a valve seat and a valve plate, wherein 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 post, the guide post passes through the first through hole, and the guide post can move within the first through hole.

[0009] In some embodiments, the valve seat includes a first part and a second part. The first part is disposed on the second part. The first groove is located at one end of the second part away from the first part. A second groove is provided at one end of the first part away from the second part. One end of the first through hole is connected to the second groove. The other end of the first through hole is connected to the first groove. The guide post passes through the first through hole and extends at least partially into the second groove. A cover is provided at one end of the guide post that extends into the second groove. A buffer cavity is formed between the cover and the bottom of the second groove.

[0010] In some embodiments, the cover body is clearance-fitted with the sidewall of the second groove, and the second part is provided with a plurality of third through holes, which are located on the outside of the first part.

[0011] In some embodiments, a third groove is provided at the bottom of the first groove, and the third groove is projected onto the cross-section of the third groove, which matches the valve plate.

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

[0013] In some embodiments, the valve plate is provided at one end of the guide post, and a fifth groove is provided at the other end of the guide post. A fixing member is provided in the fifth groove, and the cover is installed on the guide post through the fixing member.

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

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

[0016] In some embodiments, the 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 that includes the aforementioned exhaust structure.

[0018] The exhaust structure and compressor provided by this invention have the following beneficial effects:

[0019] The guide post passes through the first through hole and can move within the first through hole. The guide post is guided by the first through hole. When the valve plate opens the compressor's exhaust port, the guide post moves upward, and the airflow 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 compressor's exhaust port. The guide post and the valve plate in the first through hole cooperate to constrain the reciprocating motion of the exhaust check valve plate, avoiding the problem that the exhaust check valve plate is prone to displacement during the reciprocating motion, poor valve plate guidance, easy valve plate wear, and affecting valve plate reliability. Attached Figure Description

[0020] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

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

[0022] Figure 2 This is a schematic diagram of the valve seat structure in the exhaust structure of the present invention. Figure 1 ;

[0023] Figure 3 This is a schematic diagram of the valve seat structure in the exhaust structure of the present invention. Figure 2 ;

[0024] Figure 4 This is a schematic diagram of the guide column in the exhaust structure of the present invention. Figure 1 ;

[0025] Figure 5 This is a schematic diagram of the guide column in the exhaust structure of the present invention. Figure 2 ;

[0026] Figure 6 This is a schematic diagram of the cover structure in the exhaust structure of the present invention. Figure 1 ;

[0027] Figure 7 This is a schematic diagram of the cover structure in the exhaust structure of the present invention. Figure 2 ;

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

[0029] The attached figures are labeled as follows:

[0030] 1. Valve seat; 2. Guide post; 3. Cover; 4. Buffer chamber; 5. Gasket; 6. Static scroll plate; 7. Fixing component; 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 Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

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

[0034] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0035] See also Figure 1-8 As shown, according to an embodiment of the present invention, an exhaust structure is provided, including: a valve seat 1 and a valve plate 8. The valve seat 1 is provided with a first groove 11, and a first through hole 20 is provided at the bottom of the groove 11. The first groove 11 penetrates 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. The valve plate 8 is provided with a guide post 2, which penetrates the first through hole 20 and can move within the first through hole 20. In this technical solution, along the radial direction of the first through hole 20, the first groove 11 penetrates the valve seat 1. The first groove 11 is disposed at one end of the valve seat 1. The valve seat 1 has opposing first and second sidewalls. The first groove 11 penetrates the first and second sidewalls, making one end of the valve seat 1 have a U-shaped structure. The guide post 2 penetrates the first through hole 20. The guide post 2 can move within the first through hole 20. The guide post 2 is guided by the first through hole 20. When the valve plate 8 opens the exhaust port of the compressor, the guide post 2 moves upward, and the airflow is discharged from both sides of the valve seat 1 through the first groove 11. After the exhaust is completed, the guide post 2 moves downward, and the valve plate 8 continues to close the exhaust port of the compressor. The guide post 2 cooperates with the valve plate 8 opened in the first through hole 20 to constrain the reciprocating motion of the exhaust check valve plate 8, avoiding the problem that the exhaust check valve plate is prone to displacement during the reciprocating motion, the valve plate has poor guidance, and the valve plate is prone 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 disposed 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. A second groove 10 is provided at one end of the first portion 14 facing away from the second portion 15. One end of the first through hole 20 communicates with the second groove 10, and the other end of the first through hole 20 communicates with the first groove 11. The guide post 2 passes through the first through hole 20 and extends at least partially into the second groove 10. A cover 3 is provided at one end of the guide post 2 extending into the second groove 10. A buffer cavity 4 is formed between the cover 3 and the bottom of the second groove 10. In this technical solution, the buffer cavity 4 is formed between the cover 3 and the bottom of the second groove 10. The guide post 2 cooperates with the first through hole 20 to guide the movement of the valve plate 8. The contact between the guide post 2 and the first through hole 20 is a surface contact, which is easier to lubricate and can effectively avoid the problem of valve plate wear in the existing structure. The cover 3 is fixedly connected to the guide post 2, and the cover 3 and the bottom of the second groove 10 form a hollow buffer cavity 4 with a buffering function. When the valve plate 8 rises, the cover 3 and the guide post 2 rise synchronously, the volume of the buffer cavity 4 increases, the pressure inside the buffer cavity 4 decreases, and the movement of the valve plate 8 slows down until it stops. When the valve plate 8 falls, the cover 3 and the guide post 2 fall synchronously, the volume of the buffer cavity 4 decreases, the pressure inside the buffer cavity 4 increases, and the movement of the valve plate slows down until it stops. The reciprocating motion of the valve plate 8 causes changes in the volume of the buffer cavity 4, resulting in a pressure difference between the inside and outside of the buffer cavity 4, which reduces the impact between the valve plate 8 and the valve seat 1 and the gasket 5. After the movement of the valve plate 8 is basically finished, the inside and outside of the buffer cavity 4 exchange gases to balance the pressure difference between the inside and outside, so as not to affect the movement of the valve plate 8 in the next cycle. This solves the problem of wear and deformation damage caused by rigid impact during the reciprocating motion of the exhaust check valve plate, and avoids wear and deformation of the exhaust check valve plate under high-frequency reciprocating motion. This effectively improves the lifespan of the exhaust check valve plate and the reliability of the compressor.

[0037] In some embodiments, the cover 3 and the sidewall of the second groove 10 are clearance-fitted, and the second part 15 is provided with a plurality of third through holes 12, which are located outside the first part 14. In this technical solution, the cover 3 and the sidewall of the second groove 10 are clearance-fitted, and there is a gap of a certain size between the cover 3 and the sidewall of the second groove 10. A passage of a certain size can also be opened on the cover 3 to allow gas exchange between the inside of the pressure chamber and the outside. The size of this gap allows the valve plate to slowly balance the pressure inside and outside the buffer chamber 4 after the exhaust check valve has basically finished moving. 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 change significantly. After the compressor is working normally, gaseous refrigerant fills the compressor. The cover 3 and the sidewall of the second groove 10 are clearance-fitted. Under the action of the pressure difference inside and outside the buffer chamber 4, the airflow at the top cover of the compressor slowly flows out or in through the gap between the cover 3 and the second groove 10. The size of the gap between the cover 3 and the second groove 10 is controlled so that it is not so large that the portion of the airflow that changes volume in the buffer chamber 4 is completely discharged or discharged during the movement of the exhaust check valve. Instead, the pressure inside and outside the buffer chamber 4 is slowly balanced after the movement is completed. The third through hole 12 can be a threaded hole, and the valve seat 1 is connected to the stationary scroll plate through the third through hole 12 by screws.

[0038] In some embodiments, a third groove 13 is provided at the bottom of the first groove 11. The third groove 13, with its cross-section as the projection plane, matches the valve plate 8. In this technical solution, with the third groove 13, with its cross-section as the projection plane, and the valve plate 8 matching the valve plate 8, when the valve plate 8 moves upward, under the action of the guide post 2, the valve plate 8 enters 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 within the cavity changes, and the pressure increases, avoiding the problem of deformation damage caused by rigid impact when the valve plate impacts the upper part of the valve seat and the gasket at high frequency. This avoids wear and deformation of the exhaust check valve plate under high-frequency reciprocating motion, effectively improving the lifespan of the exhaust check valve plate and enhancing the reliability of the compressor.

[0039] In some embodiments, a baffle is provided at the opening of the second groove 10, and a cavity structure is formed between the baffle and the cover 3. A connecting hole is provided on the cover 3. In this technical solution, the cavity structure formed between the baffle and the cover 3 is connected to 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 post 2, and a fifth groove 9 is provided at the other end of the guide post 2. A fixing member 7 is provided in the fifth groove 9, and the cover 3 is installed on the guide post 2 through the fixing member 7. In this technical solution, the inner wall of the fifth groove 9 is provided with threads, the fixing member 7 is a screw, and the cover 3 is fixedly connected to the guide post 2 by the screw, thereby improving the stability of the cover 3 and the fixing member 7.

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

[0042] In some embodiments, the fourth groove 16 and the fifth groove 9 have circular cross-sections, with the diameter of the fourth groove 16 being larger than the diameter of the fifth groove 9. A second through hole 17 is provided on the third portion 18, which sequentially penetrates both the third portion 18 and the fourth portion 19. The fixing member 7 penetrates the second through hole 17 and 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 both the cover 3 and the fifth groove 9, making the connection between the cover 3 and the guide post 2 more stable.

[0043] In some embodiments, the 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 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 diameter of the second through hole 17 is the same as that of the fifth groove 9, and the central axes of the second through hole 17 and the fifth groove 9 coincide, which facilitates the installation of the fastener 7 and improves the assembly efficiency of the fastener 7 and the cover 3.

[0044] The present invention also provides a compressor including the above-described exhaust structure.

[0045] The compressor includes a stationary scroll plate 6, and an exhaust structure is disposed on the stationary scroll plate 6. A valve plate 8 is opposite to the exhaust port on the stationary scroll plate 6. A gasket 5 is disposed between the valve seat 1 and the stationary scroll plate 6. The valve seat 1 and the stationary scroll plate 6 are connected by screws. The screws pass through the third through hole 12 and are connected to the stationary scroll plate 6. Furthermore, the gasket 5 is provided with a connecting hole opposite to the third through hole 12. The screws pass through the third through hole 12 and the connecting hole in sequence and are connected to the stationary scroll plate 6. In addition, the gasket 5 is provided with an exhaust port opposite to the valve plate 8. The valve plate 8 can extend into the exhaust port and close the exhaust port of the stationary scroll plate 6.

[0046] It will be readily understood by those skilled in the art that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0047] The above description is merely 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 principles of the present invention should be included within the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the protection scope of the present invention.

Claims

1. A compressor characterized by: include: A stationary vortex disk (6) is provided with an exhaust structure, which includes a valve seat (1) and a valve plate (8). The valve seat (1) is provided with a first groove (11). The valve plate (8) is arranged opposite to the exhaust hole on the stationary vortex disk (6). A first through hole (20) is opened at the bottom of the groove (11). Along the radial direction of the first through hole (20), the first groove (11) penetrates the valve seat (1). The valve plate (8) is arranged opposite to the opening of the first groove (11). A guide post (2) is provided on the valve plate (8). The guide post (2) penetrates the first through hole (20). The guide post (2) can move within the first through hole (20). The valve seat (1) includes a first part (14) and a second part (15). The first part (14) is disposed on the second part (15). The first groove (11) is located at one end of the second part (15) facing away from the first part (14). A second groove (10) is provided at one end of the first part (14) facing away from the second part (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) passes through the first through hole (20) and extends at least partially into the second groove (10). A cover (3) is provided at one end of the guide post (2) extending into the second groove (10). A buffer cavity (4) is formed between the cover (3) and the bottom of the second groove (10). The cover (3) and the side wall of the second groove (10) are fitted with a clearance. The second part (15) is provided with a plurality of third through holes (12), which are located on the outside of the first part (14). The airflow at the compressor cover can flow out or in through the gap between the cover (3) and the second groove (10). The bottom of the first groove (11) is provided with a third groove (13), and the cross-section of the third groove (13) is used as the projection surface. The third groove (13) matches the valve plate (8). A baffle is provided at the opening of the second groove (10), and a cavity structure is formed between the baffle and the cover (3). A connecting hole is provided on the cover (3).

2. The compressor of claim 1, wherein: The valve plate (8) is provided at one end of the guide post (2), and a fifth groove (9) is provided at the other end of the guide post (2). A fixing member (7) is provided in the fifth groove (9), and the cover (3) is installed on the guide post (2) through the fixing member (7).

3. The compressor according to claim 2, characterized in that: The cover (3) includes a third part (18) and a fourth part (19). The third part (18) is disposed on the fourth part (19). The other end of the guide post (2) is provided with a fourth groove (16). The fifth groove (9) is disposed at the bottom of the fourth groove (16). The third part (18) is inserted into the fourth groove (16).

4. The compressor according to claim 3, 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). A second through hole (17) is provided on the third part (18). The second through hole (17) passes through the third part (18) and the fourth part (19) in sequence. The fixing member (7) passes through the second through hole (17) and extends into the fifth groove (9).

5. The compressor according to claim 3, characterized in that: The depth of the fourth groove (16) is the same as the height of the third part (18), and the wall thickness of the third part (18) is the same as the diameter difference between the fourth groove (16) and the fifth groove (9).

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