Exhaust valve plate, valve group assembly and compressor

Abstract

The utility model provides an exhaust valve plate, a valve group assembly and a compressor. The exhaust valve plate comprises a main body plate, wherein a mounting through hole is formed in the main body plate; the exhaust valve plate is arranged in the mounting through hole, the exhaust valve plate comprises a connecting part, a joining part and an end part which are connected in sequence, and the connecting part is connected with the main body plate; wherein, the result is 0.3 lt; l1 / L2lt; and 0.65, L1 is the width of the joint of the connecting part and the joining part, and L2 is the maximum width of the end part. According to the technical scheme provided by the utility model, the technical problem that the exhaust valve plate is easy to delay to close in the prior art can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of exhaust valves, and in particular, to an exhaust valve plate, a valve group assembly and a compressor. Background Art

[0002] At present, the setting of the valve group assembly in a compressor not only affects the performance of the compressor, but also plays an important role in improving the exhaust efficiency of the compressor. As Figure 1 shown, the valve group structure of the piston compressor shown in the figure adopts a structural form in which a valve plate 30 cooperates with a ventilation hole 40, and the utility model of the air valve is realized by the opening and closing of the valve plate 30. This form of valve group structure is difficult to ensure the sealing effect, and problems such as leakage and backflow are likely to occur, and the exhaust efficiency is not high.

[0003] However, due to the limited design of the stiffness and natural frequency of the existing valve plate 30, the existing valve plate 30 cannot respond to the rapid opening and closing of the high-frequency operation of the compressor, resulting in a slow rebound speed of the valve plate 30 during the high-frequency operation of the compressor, and the valve plate 30 is likely to have a problem of delayed closing, which affects the efficient operation of the compressor in a wide frequency band. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide an exhaust valve plate, a valve group assembly and a compressor to solve the technical problem that the exhaust valve plate in the existing technology is prone to delayed closing.

[0005] To achieve the above purpose, according to one aspect of the utility model, an exhaust valve plate is provided, including:

[0006] A main body plate, on which an installation through hole is provided;

[0007] An exhaust valve plate, arranged in the installation through hole, the exhaust valve plate includes a connecting part, a connecting portion and a head end portion connected in sequence, and the connecting part is connected to the main body plate;

[0008] Wherein, 0.3 < L1 / L2 < 0.65, L1 is the width at the connection between the connecting part and the connecting portion, and L2 is the maximum width of the head end portion.

[0009] Further, there are at least two exhaust valve plates, and the at least two exhaust valve plates are arranged at intervals in the installation through hole.

[0010] Further, the at least two exhaust valve plates are symmetrically arranged along a preset axis; and / or,

[0011] The minimum distance between two adjacent exhaust valve plates is greater than or equal to 0.5 mm and less than or equal to 1.2 mm; and / or,

[0012] The outer peripheral edge of the head end portion is an arc.

[0013] Further, along the direction from the connecting portion to the end head portion, the width of the connecting portion remains unchanged; or,

[0014] along the direction from the connecting portion to the end head portion, the width of the connecting portion gradually increases.

[0015] Further, along the direction from the connecting portion to the end head portion, the length of the connecting portion is L3, the length of the exhaust valve piece is L4, and 0.25 ≤ L3 / L4 ≤ 0.4; and / or,

[0016] The minimum width of the connecting portion is greater than or equal to 2 mm.

[0017] Further, the connecting portions of at least two exhaust valve pieces are arranged at intervals along the circumference of the mounting through hole;

[0018] wherein, the end head portions of at least two exhaust valve pieces are located in the middle of the mounting through hole; and / or,

[0019] The minimum distance between the end head portions of any two adjacent exhaust valve pieces is greater than or equal to 0.5 mm and less than or equal to 1.2 mm.

[0020] Further, there are three exhaust valve pieces, and the three exhaust valve pieces include a first exhaust valve piece, a second exhaust valve piece and a third exhaust valve piece;

[0021] wherein, the first exhaust valve piece and the third exhaust valve piece are respectively located on both sides of the second exhaust valve piece; and / or,

[0022] The first exhaust valve piece and the third exhaust valve piece are symmetrically arranged with respect to a preset axis; and / or,

[0023] The first exhaust valve piece and the third exhaust valve piece are symmetrically arranged with respect to the symmetry axis of the second exhaust valve piece.

[0024] Further, the first exhaust valve piece and the third exhaust valve piece have the same shape and size; or,

[0025] The first exhaust valve piece, the second exhaust valve piece and the third exhaust valve piece have the same shape and size; or,

[0026] The first exhaust valve piece, the second exhaust valve piece and the third exhaust valve piece have different shapes or sizes.

[0027] Further, the width of the connection between the connecting portion of the first exhaust valve piece and the connecting portion of the first exhaust valve piece is L 11 , the maximum width of the end head portion of the first exhaust valve piece is L 21 ; 0.3 < L 11 / L 21 <0.6; and / or,

[0028] The width of the connection between the connecting portion of the third exhaust valve piece and the connecting portion of the third exhaust valve piece is L12 The maximum width of the end head of the third exhaust valve plate is L 22 ; 0.3 < L 12 / L 22 < 0.6

[0029] According to another aspect of the present invention, a valve group assembly is provided, and the valve group assembly includes the exhaust valve plate provided above.

[0030] According to still another aspect of the present invention, a compressor is provided, and the compressor includes the valve group assembly provided above.

[0031] By applying the technical solution of the present invention, the ratio range of the width at the connection between the connecting portion and the connecting part of the exhaust valve plate to the maximum width of the end head is set between 0.3 and 0.65, so that the stiffness change of the exhaust valve plate is more obvious along the direction from the connecting portion to the end head of the exhaust valve plate. Therefore, when the compressor operates at high frequency, the exhaust valve plate can rebound more quickly, effectively improving the closing response speed of the exhaust valve plate during high-frequency operation of the compressor, and further improving the exhaust efficiency. At the same time, such a setting also improves the structural modal vibration mode of the exhaust valve plate, reduces the risk of modal resonance caused by the excitation of the modal frequency of the exhaust valve plate order, and reduces the possibility of high-frequency vibration noise caused thereby. Therefore, through the technical solution of the present invention, the technical problem that the exhaust valve plate in the prior art is prone to delayed closing can be solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings forming a part of this application are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0033] Figure 1 shows the structure of the exhaust valve plate in the prior art;

[0034] Figure 2 shows the front view of the exhaust valve plate provided in Embodiment 1 of the present invention;

[0035] Figure 3 shows Figure 2 the enlarged schematic view of the structure at A in

[0036] Figure 4 shows Figure 2 the enlarged schematic view of the structure at B in

[0037] Figure 5 shows Figure 2 the enlarged schematic view of the structure at C in

[0038] Figure 6Shows the front view of the exhaust valve plate provided by the second embodiment of the present utility model;

[0039] Figure 7 Shows Figure 6 The enlarged schematic view of the structure at D in

[0040] Figure 8 Shows the front view of the exhaust valve plate provided by the third embodiment of the present utility model.

[0041] Wherein, the above-mentioned drawings include the following reference numerals:

[0042] 10, main body plate; 11, mounting through hole;

[0043] 20, exhaust valve piece; 21, first exhaust valve piece; 22, second exhaust valve piece; 23, third exhaust valve piece;

[0044] 201, connecting portion; 202, connecting portion; 203, end portion;

[0045] 30, valve piece; 40, ventilation hole. Detailed implementation manners

[0046] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0047] As Figures 2 to 5 shown, the first embodiment of the present utility model provides an exhaust valve plate, which includes a main body plate 10 and an exhaust valve piece 20. A mounting through hole 11 is provided on the main body plate 10. The exhaust valve piece 20 is arranged in the mounting through hole 11. The exhaust valve piece 20 includes a connecting portion 201, a connecting portion 202 and an end portion 203 which are connected in sequence. The connecting portion 201 is connected to the main body plate 10; wherein, 0.3 < L1 / L2 < 0.65, L1 is the width at the connection of the connecting portion 201 and the connecting portion 202, and L2 is the maximum width of the end portion 203.

[0048] By adopting the exhaust valve plate provided in the first embodiment of the present utility model, the ratio range of the width at the connection of the connecting portion 201 and the connecting portion 202 of the exhaust valve piece 20 to the maximum width of the end head portion 203 is set between 0.3 and 0.65, so that along the direction from the connecting portion 201 to the end head portion 203 of the exhaust valve piece 20, the stiffness change of the exhaust valve piece 20 is more obvious, so that when the compressor operates at high frequency, the rebound of the exhaust valve piece 20 can be faster, thereby effectively improving the closing response speed of the exhaust valve piece 20 when the compressor operates at high frequency, and then improving the exhaust efficiency. At the same time, such a setting also improves the structural modal vibration mode of the exhaust valve piece 20, reduces the risk of modal resonance caused by the excitation of the modal frequency of the exhaust valve piece 20 order, and reduces the possibility of high-frequency vibration noise caused thereby. Therefore, through the exhaust valve plate provided in this embodiment, the technical problem that the exhaust valve piece in the prior art is prone to delayed closing can be solved.

[0049] Specifically, at least a part of the exhaust valve piece 20 is movably arranged in the mounting through hole 11. With such a structural setting, at least a part of the exhaust valve piece 20 can be movable relative to the mounting through hole 11 under pressure to realize the opening and closing of the exhaust valve piece 20.

[0050] Specifically, in order to realize the opening and closing of the exhaust valve piece, the connecting portion 202 of the exhaust valve piece 20 is spaced from the main body plate 10; the end head portion 203 of the exhaust valve piece 20 is spaced from the main body plate 10.

[0051] Specifically, the outer edge of the exhaust valve piece 20 is arranged to be adapted to the edge of the mounting through hole 11. Specifically, the outer edge of the exhaust valve piece 20 is spaced from the edge of the mounting through hole 11.

[0052] As Figure 3 shown, in an exhaust valve piece 20 of one shape, the position of the maximum width of the end head portion 203 of the exhaust valve piece 20 is located at the connection of the end head portion 203 and the connecting portion 202.

[0053] As Figure 4 shown, in an exhaust valve piece 20 of another shape, the position of the maximum width of the end head portion 203 of the exhaust valve piece 20 is located in the middle of the end head portion 203.

[0054] Specifically, there are at least two exhaust valve pieces 20, and at least two exhaust valve pieces 20 are spaced and arranged in the mounting through hole 11. With such a structural setting, different exhaust valve pieces 20 can be independently controlled to open and close, and at the same time, it can also prevent interference between the exhaust valve pieces 20 during opening and closing.

[0055] In this embodiment, at least two exhaust valve plates 20 are symmetrically arranged along a preset axis. With such a structural arrangement, the structural layout of each exhaust valve plate 20 in the mounting through-hole 11 can be optimized, facilitating the arrangement of the exhaust valve plates 20.

[0056] Specifically, the preset axis is the axis of symmetry of the mounting through-hole 11 or the axis of symmetry of the main body plate 10.

[0057] Specifically, the minimum distance between two adjacent exhaust valve plates 20 is greater than or equal to 0.5 mm and less than or equal to 1.2 mm. In this way, it is ensured that each exhaust valve plate 20 can be normally opened or closed, avoiding the situation that the opening and closing of each exhaust valve plate 20 are hindered by adjacent exhaust valve plates 20 due to too small a distance, and also avoiding waste of space layout due to too large a distance.

[0058] Specifically, the outer peripheral edge of the end head 203 is an arc. With such a structural arrangement, it is convenient for the end head 203 of the exhaust valve plate 20 to be correspondingly arranged with the exhaust round hole, further improving the opening and closing response sensitivity of the exhaust valve plate 20 under pressure.

[0059] In this embodiment, as Figure 3 shown, in an exhaust valve plate 20 of one shape, along the direction from the connecting portion 201 to the end head 203, the width of the connecting portion 202 gradually increases. With such a structural arrangement, along the direction from the connecting portion 201 to the end head 203 of the exhaust valve plate 20, the change in the stiffness of the exhaust valve plate 20 is more obvious, so that when the compressor operates at high frequency, the rebound of the exhaust valve plate 20 can be faster, effectively improving the closing response speed of the exhaust valve plate 20 during high-frequency operation of the compressor, and thus improving the exhaust efficiency. At the same time, such a setting also improves the structural modal vibration mode of the exhaust valve plate 20, reduces the risk of modal resonance caused by the excitation of the order modal frequency of the exhaust valve plate 20, and reduces the possibility of high-frequency vibration noise caused thereby.

[0060] In this embodiment, as Figure 4 shown, in an exhaust valve plate 20 of another shape, along the direction from the connecting portion 201 to the end head 203, the width of the connecting portion 202 remains unchanged. With such a structural arrangement, the stress concentration problem at the connection between the connecting portion 201 and the connecting portion 202 can be improved through the equal-width structure of the connecting portion 202, making the structure of the exhaust valve plate more stable, and thus extending the service life of the exhaust valve plate.

[0061] Specifically, along the direction from the connecting portion 201 to the end head portion 203, the length of the connecting portion 202 is L3, and the length of the exhaust valve piece 20 is L4, where 0.25 ≤ L3 / L4 ≤ 0.4. With such a structural arrangement, it is possible to facilitate the optimization of the structural stiffness and natural frequency of the exhaust valve piece 20, thereby enhancing the rebound response speed of the exhaust valve piece 20, and further improving the exhaust efficiency and reducing the vibration and noise.

[0062] Specifically, the minimum width of the connecting portion 201 is greater than or equal to 2 mm. With such a structural arrangement, it is possible to enhance the structural strength at the connection between the connecting portion 201 and the connecting portion 202, thereby extending the service life of the exhaust valve piece 20.

[0063] In this embodiment, the connecting portions 201 of at least two exhaust valve pieces 20 are arranged at intervals along the circumference of the mounting through-hole 11; wherein, the end head portions 203 of at least two exhaust valve pieces 20 are located in the middle of the mounting through-hole 11. With such a structural arrangement, it is possible to optimize the structural layout of the exhaust valve pieces 20 on the exhaust valve plate. By concentrating the end head portions 203 of the exhaust valve pieces 20 in the middle of the mounting through-hole 11, it is possible to facilitate the corresponding setting of the positions of the exhaust holes. On the basis of increasing the exhaust flow area, the layout position of the exhaust flow is optimized, and such a setting maximally utilizes the area of the limited mounting through-hole 11.

[0064] Specifically, the connecting portions 201 of at least two exhaust valve pieces 20 are arranged at intervals along the circumference of the mounting through-hole 11; wherein, the minimum distance between the end head portions 203 of any two adjacent exhaust valve pieces 20 is greater than or equal to 0.5 mm and less than or equal to 1.2 mm. With such a structural arrangement, it is possible to enable each exhaust valve piece 20 to independently control the opening and closing, and at the same time, it is possible to avoid interference between the exhaust valve pieces 20 during opening and closing.

[0065] Specifically, there are three exhaust valve pieces 20, and the three exhaust valve pieces 20 include a first exhaust valve piece 21, a second exhaust valve piece 22, and a third exhaust valve piece 23; wherein, the first exhaust valve piece 21 and the third exhaust valve piece 23 are respectively located on both sides of the second exhaust valve piece 22. With such a structural arrangement, the first exhaust valve piece 21 and the third exhaust valve piece 23 are respectively located on both sides of the second exhaust valve piece 22, which can make the layout of the three exhaust valve pieces 20 more compact and effectively optimize the layout form of the exhaust valve pieces 20 on the exhaust valve plate.

[0066] Specifically, there are three exhaust valve pieces 20, and the three exhaust valve pieces 20 include a first exhaust valve piece 21, a second exhaust valve piece 22, and a third exhaust valve piece 23; wherein, the first exhaust valve piece 21 and the third exhaust valve piece 23 are symmetrically arranged with respect to a preset axis. With such a structural arrangement, it is possible to optimize the structural layout of each exhaust valve piece 20 in the mounting through-hole 11, thereby facilitating the setting of the exhaust valve pieces 20.

[0067] Specifically, the preset axis can be the central axis of the exhaust valve plate.

[0068] Specifically, there are three exhaust valve sheets 20, and the three exhaust valve sheets 20 include a first exhaust valve sheet 21, a second exhaust valve sheet 22, and a third exhaust valve sheet 23; wherein, the first exhaust valve sheet 21 and the third exhaust valve sheet 23 are symmetrically arranged with respect to the symmetry axis of the second exhaust valve sheet 22. With such a structural arrangement, the first exhaust valve sheet 21 and the third exhaust valve sheet 23 are respectively located on both sides of the second exhaust valve sheet 22, which can make the layout of the three exhaust valve sheets 20 more compact and effectively optimize the layout form of the exhaust valve sheets 20 on the exhaust valve plate.

[0069] In this embodiment, the first exhaust valve sheet 21 and the third exhaust valve sheet 23 have the same shape and size. With such a structural arrangement, since the first exhaust valve sheet 21 and the third exhaust valve sheet 23 have the same shape and size, the stiffness and natural frequency of the first exhaust valve sheet 21 and the third exhaust valve sheet 23 are also the same. In this way, the first exhaust valve sheet 21 and the third exhaust valve sheet 23 can be opened and closed synchronously, so that during the opening and closing process of the exhaust valve sheet 20, the flow area of the air flow is larger, thereby slowing down the air flow velocity and further reducing the turbulent noise. At the same time, such an arrangement is also more convenient for reducing the impact velocity of the compressor during high-frequency operation and improving the reliability of the air valve.

[0070] Specifically, the first exhaust valve sheet 21, the second exhaust valve sheet 22, and the third exhaust valve sheet 23. With such a structural arrangement, since the first exhaust valve sheet 21, the second exhaust valve sheet 22, and the third exhaust valve sheet 23 have the same shape and size, the stiffness and natural frequency of the first exhaust valve sheet 21, the second exhaust valve sheet 22, and the third exhaust valve sheet 23 are also the same. In this way, the first exhaust valve sheet 21, the second exhaust valve sheet 22, and the third exhaust valve sheet 23 can be opened and closed synchronously, so that during the opening and closing process of the exhaust valve sheet 20, the flow area of the air flow is larger, thereby slowing down the air flow velocity and further reducing the turbulent noise.

[0071] Specifically, the first exhaust valve sheet 21, the second exhaust valve sheet 22, and the third exhaust valve sheet 23 have different shapes or sizes. With such a structural arrangement, since the first exhaust valve sheet 21, the second exhaust valve sheet 22, and the third exhaust valve sheet 23 have different shapes or sizes, the stiffness and natural frequency of the first exhaust valve sheet 21, the second exhaust valve sheet 22, and the third exhaust valve sheet 23 are not the same. In this way, the first exhaust valve sheet 21, the second exhaust valve sheet 22, and the third exhaust valve sheet 23 can be respectively applicable to the opening and closing of the air valves in different frequency bands of the compressor, thereby effectively improving the exhaust efficiency of the air valve.

[0072] In this embodiment, the width of the connection part 201 of the first exhaust valve plate 21 at the connection with the transition part 202 of the first exhaust valve plate 21 is L 11 and the maximum width of the end part 203 of the first exhaust valve plate 21 is L 21 ; 0.3 < L 11 / L 21 < 0.6. With such a structural setting, by setting the ratio range of the width of the connection part 201 of the first exhaust valve plate 21 at the connection with the transition part 202 to the maximum width of the end part 203 between 0.3 and 0.6, the change in the stiffness of the first exhaust valve plate 21 becomes more obvious along the direction from the connection part 201 to the end part 203 of the first exhaust valve plate 21. Thus, when the compressor operates at high frequency, the first exhaust valve plate 21 can rebound more quickly, effectively improving the closing response speed of the exhaust valve plate 20 during high-frequency operation of the compressor, and further improving the exhaust efficiency. At the same time, such a setting also improves the structural modal vibration mode of the first exhaust valve plate 21, reduces the risk of modal resonance caused by the excitation of the modal frequency of the first exhaust valve plate 21, and reduces the possibility of high-frequency vibration noise caused thereby.

[0073] Specifically, the width of the connection part 201 of the third exhaust valve plate 23 at the connection with the transition part 202 of the third exhaust valve plate 23 is L 12 and the maximum width of the end part 203 of the third exhaust valve plate 23 is L 22 ; 0.3 < L 12 / L 22 < 0.6. With such a structural setting, by setting the ratio range of the width of the connection part 201 of the third exhaust valve plate 23 at the connection with the transition part 202 to the maximum width of the end part 203 between 0.3 and 0.6, the change in the stiffness of the third exhaust valve plate 23 becomes more obvious along the direction from the connection part 201 to the end part 203 of the third exhaust valve plate 23. Thus, when the compressor operates at high frequency, the third exhaust valve plate 23 can rebound more quickly, effectively improving the closing response speed of the exhaust valve plate 20 during high-frequency operation of the compressor, and further improving the exhaust efficiency. At the same time, such a setting also improves the structural modal vibration mode of the third exhaust valve plate 23, reduces the risk of modal resonance caused by the excitation of the modal frequency of the third exhaust valve plate 23, and reduces the possibility of high-frequency vibration noise caused thereby.

[0074] Such as Figure 6 and Figure 7As shown, in the second embodiment of the present utility model, the first exhaust valve plate 21, the second exhaust valve plate 22, and the third exhaust valve plate 23 have the same size and shape. The first exhaust valve plate 21, the second exhaust valve plate 22, and the third exhaust valve plate 23 are all exhaust valve plates 20 of one shape. Along the direction from the connecting portion 201 of the first exhaust valve plate 21 to the end head portion 203 of the first exhaust valve plate 21, the width of the connecting portion 202 of the first exhaust valve plate 21 gradually increases. Along the direction from the connecting portion 201 of the second exhaust valve plate 22 to the end head portion 203 of the second exhaust valve plate 22, the width of the connecting portion 202 of the second exhaust valve plate 22 gradually increases. Along the direction from the connecting portion 201 of the third exhaust valve plate 23 to the end head portion 203 of the third exhaust valve plate 23, the width of the connecting portion 202 of the third exhaust valve plate 23 gradually increases. The first exhaust valve plate 21 and the third exhaust valve plate 23 are respectively located on both sides of the second exhaust valve plate 22. The first exhaust valve plate 21 and the third exhaust valve plate 23 are symmetrically arranged with respect to the symmetry axis of the second exhaust valve plate 22. With such a structural arrangement, since the shapes and sizes of the first exhaust valve plate 21, the second exhaust valve plate 22, and the third exhaust valve plate 23 are the same, the stiffness and natural frequencies of the first exhaust valve plate 21, the second exhaust valve plate 22, and the third exhaust valve plate 23 are also the same. In this way, the first exhaust valve plate 21, the second exhaust valve plate 22, and the third exhaust valve plate 23 can be opened and closed synchronously, so that during the opening and closing process of the exhaust valve plate 20, the flow area of the air flow is larger, thereby slowing down the air flow velocity and further reducing the turbulent noise. At the same time, the setting that the width of the connecting portion 202 gradually increases can make the stiffness change of the exhaust valve plate 20 more obvious along the direction from the connecting portion 201 to the end head portion 203 of the exhaust valve plate 20. Thus, when the compressor operates at high frequency, the rebound of the exhaust valve plate 20 can be faster, which can effectively improve the closing response speed of the exhaust valve plate 20 during high-frequency operation of the compressor, and further improve the exhaust efficiency. At the same time, such a setting also improves the structural modal vibration mode of the exhaust valve plate 20, reduces the risk of modal resonance caused by the excitation of the order modal frequency of the exhaust valve plate 20, and reduces the possibility of high-frequency vibration noise caused thereby.

[0075] As Figure 8As shown, in the third embodiment of the present utility model, the first exhaust valve plate 21, the second exhaust valve plate 22, and the third exhaust valve plate 23 have the same size and shape. The first exhaust valve plate 21, the second exhaust valve plate 22, and the third exhaust valve plate 23 are all exhaust valve plates 20 of another shape. Along the direction from the connecting portion 201 of the first exhaust valve plate 21 to the end head portion 203 of the first exhaust valve plate 21, the width of the connecting portion 202 of the first exhaust valve plate 21 remains unchanged. Along the direction from the connecting portion 201 of the second exhaust valve plate 22 to the end head portion 203 of the second exhaust valve plate 22, the width of the connecting portion 202 of the second exhaust valve plate 22 remains unchanged. Along the direction from the connecting portion 201 of the third exhaust valve plate 23 to the end head portion 203 of the third exhaust valve plate 23, the width of the connecting portion 202 of the third exhaust valve plate 23 remains unchanged. The first exhaust valve plate 21 and the third exhaust valve plate 23 are respectively located on both sides of the second exhaust valve plate 22. The first exhaust valve plate 21 and the third exhaust valve plate 23 are symmetrically arranged with respect to the symmetry axis of the second exhaust valve plate 22. With such a structural arrangement, since the shapes and sizes of the first exhaust valve plate 21, the second exhaust valve plate 22, and the third exhaust valve plate 23 are the same, the stiffness and natural frequencies of the first exhaust valve plate 21, the second exhaust valve plate 22, and the third exhaust valve plate 23 are also the same. In this way, the first exhaust valve plate 21, the second exhaust valve plate 22, and the third exhaust valve plate 23 can be opened and closed synchronously, so that during the opening and closing process of the exhaust valve plate 20, the flow area of the air flow is larger, thereby slowing down the air flow velocity and further reducing the turbulent noise. At the same time, the stress concentration problem at the connection between the connecting portion 201 and the connecting portion 202 can be improved through the equal-width structure of the connecting portion 202, making the structure of the exhaust valve plate more stable, and further extending the service life of the exhaust valve plate.

[0076] The fourth embodiment of the present utility model provides a valve group assembly, and the valve group assembly includes the exhaust valve plate provided in the first to third embodiments. By using the valve group assembly provided in the fourth embodiment of the present utility model, the ratio range of the width of the connection between the connecting portion 201 and the connecting portion 202 of the exhaust valve plate 20 to the maximum width of the end head portion 203 can be set between 0.3 and 0.65, so that along the direction from the connecting portion 201 to the end head portion 203 of the exhaust valve plate 20, the change in the stiffness of the exhaust valve plate 20 is more obvious. Thus, when the compressor operates at high frequency, the rebound of the exhaust valve plate 20 can be faster, thereby effectively improving the closing response speed of the exhaust valve plate 20 during high-frequency operation of the compressor, and further improving the exhaust efficiency. At the same time, such a setting also improves the structural modal vibration mode of the exhaust valve plate 20, reduces the risk of modal resonance caused by the excitation of the modal frequency of the exhaust valve plate 20, and reduces the possibility of high-frequency vibration noise caused thereby. Therefore, through the valve group assembly provided in this embodiment, the technical problem that the exhaust valve plate in the prior art is prone to delayed closing can be solved.

[0077] Specifically, the valve group assembly further includes a valve plate, on which exhaust holes are provided, and the exhaust holes are arranged in one-to-one correspondence with the exhaust valve plates 20. Specifically, there are at least two exhaust holes, and the diameters of all the exhaust holes are the same, or the diameters of all the exhaust holes are different, or the exhaust holes include a first exhaust hole, a second exhaust hole, and a third exhaust hole, wherein the diameters of the first exhaust hole and the third exhaust hole are the same, and the diameters of the first exhaust hole and the third exhaust hole are both different from the diameter of the second exhaust hole, and the first exhaust hole and the third exhaust hole are arranged on both sides of the second exhaust hole. With such a structural arrangement, the area of the exhaust holes can be increased, so that when the compressor operates at high frequency, the response frequency of the exhaust valve plates 20 is higher and the closing is more timely, thereby avoiding the occurrence of backflow phenomenon and maintaining the cooling capacity level.

[0078] Embodiment 5 of the present utility model provides a compressor, which includes the valve group assembly provided in Embodiment 4. By using the compressor provided in Embodiment 5 of the present utility model, the ratio range of the width of the connection part 201 and the connection part 202 of the exhaust valve plate 20 to the maximum width of the end head part 203 can be set between 0.3 and 0.65, so that along the direction from the connection part 201 to the end head part 203 of the exhaust valve plate 20, the change in the stiffness of the exhaust valve plate 20 is more obvious, and thus when the compressor operates at high frequency, the rebound of the exhaust valve plate 20 can be faster, thereby effectively improving the closing response speed of the exhaust valve plate 20 when the compressor operates at high frequency, and further improving the exhaust efficiency. At the same time, such a setting also improves the structural modal vibration mode of the exhaust valve plate 20, reduces the risk of modal resonance caused by the excitation of the order modal frequency of the exhaust valve plate 20, and reduces the possibility of high-frequency vibration noise caused thereby. Therefore, the compressor provided by this embodiment can solve the technical problem that the exhaust valve plate in the prior art is prone to delayed closing.

[0079] From the above description, it can be seen that the above embodiments of the present utility model achieve the following technical effects: realizing independent control of the stiffness and lift of the three exhaust valve plates, the valve plate structure form breaks the conventional scheme, the valve plate fixing part and the head are connected with gradually increasing sizes, improving the structural modal vibration mode of the valve plate, reducing the risk of modal resonance caused by the excitation of the order modal frequency of the valve plate, and reducing the high-frequency vibration noise caused thereby. Ensuring that the compressor valve group can respond quickly from low frequency to high frequency, improving the suction and exhaust efficiency of the compressor, reducing the impact speed when the compressor operates at high frequency, and improving the reliability of the air valve.

[0080] Note that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly dictates otherwise, the singular forms are also intended to include the plural forms. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0081] Unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions, and values set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such technologies, methods, and devices should be regarded as part of the specification. In all the examples shown and discussed herein, any specific values should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, further discussion thereof is not required in subsequent drawings.

[0082] In the description of the present application, it should be understood that the orientation or positional relationships indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom", etc. are generally based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Without contrary description, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and thus should not be construed as limiting the protection scope of the present application; the orientation words "inside, outside" refer to the inside and outside of the contour of each component itself.

[0083] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper" etc. may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is inverted, a device described as "above" or "over" other devices or structures will then be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the corresponding explanations for the spatial relative descriptions used herein will be made accordingly.

[0084] In addition, it should be noted that the use of terms such as "first", "second" etc. to define components is only for the convenience of differentiating the corresponding components. Without further statement, the above terms have no special meaning, and thus should not be construed as limiting the scope of protection of the present application.

[0085] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model may have various modifications and variations. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the scope of protection of the present utility model.

Claims

1. An exhaust valve plate, characterized in that: Comprising: A main board (10), on which an installation through-hole (11) is provided; An exhaust valve plate (20), disposed in the installation through-hole (11), the exhaust valve plate (20) includes a connecting portion (201), a connecting part (202) and a terminal head portion (203) connected in sequence, and the connecting portion (201) is connected to the main board (10); Wherein, 0.3 < L1 / L2 < 0.65, L1 is the width at the connection between the connecting portion (201) and the connecting part (202), and L2 is the maximum width of the terminal head portion (203).

2. The exhaust valve plate according to claim 1, characterized in that: There are at least two exhaust valve plates (20), and at least two exhaust valve plates (20) are arranged at intervals in the installation through-hole (11).

3. The exhaust valve plate according to claim 2, characterized in that: At least two exhaust valve plates (20) are symmetrically arranged along a preset axis; and / or, The minimum distance between two adjacent exhaust valve plates (20) is greater than or equal to 0.5 mm and less than or equal to 1.2 mm; and / or, The outer peripheral edge of the terminal head portion (203) is an arc.

4. The exhaust valve plate according to claim 1, characterized in that Along the direction from the connecting portion (201) to the terminal head portion (203), the width of the connecting part (202) remains unchanged; Or, Along the direction from the connecting portion (201) to the terminal head portion (203), the width of the connecting part (202) gradually increases.

5. The exhaust valve plate according to claim 1, characterized in that: Along the direction from the connecting portion (201) to the terminal head portion (203), the length of the connecting part (202) is L3, and the length of the exhaust valve plate (20) is L4, 0.25 ≤ L3 / L4 ≤ 0.4; and / or, The minimum width of the connecting portion (201) is greater than or equal to 2 mm.

6. The exhaust valve plate according to claim 2, characterized in that: The connecting portions (201) of at least two exhaust valve plates (20) are arranged at intervals along the circumference of the installation through-hole (11); Wherein, the terminal head portions (203) of at least two exhaust valve plates (20) are located in the middle of the installation through-hole (11); and / or, The minimum distance between the terminal head portions (203) of any two adjacent exhaust valve plates (20) is greater than or equal to 0.5 mm and less than or equal to 1.2 mm.

7. The exhaust valve plate according to claim 2, characterized in that: There are three exhaust valve plates (20), and the three exhaust valve plates (20) include a first exhaust valve plate (21), a second exhaust valve plate (22) and a third exhaust valve plate (23); Wherein, the first exhaust valve plate (21) and the third exhaust valve plate (23) are respectively located on both sides of the second exhaust valve plate (22); and / or, The first exhaust valve plate (21) and the third exhaust valve plate (23) are symmetrically arranged with respect to a preset axis; and / or, The first exhaust valve plate (21) and the third exhaust valve plate (23) are symmetrically arranged with respect to the symmetry axis of the second exhaust valve plate (22).

8. The exhaust valve plate according to claim 7, characterized in that The first exhaust valve plate (21) and the third exhaust valve plate (23) have the same shape and size; or, The first exhaust valve plate (21), the second exhaust valve plate (22) and the third exhaust valve plate (23) are all of the same shape and size; or, The first exhaust valve plate (21), the second exhaust valve plate (22) and the third exhaust valve plate (23) have different shapes or sizes.

9. The exhaust valve plate according to claim 7, characterized in that: The width of the connection portion (201) of the first exhaust valve plate (21) and the connecting portion (202) of the first exhaust valve plate (21) is L 11 The maximum width of the end portion (203) of the first exhaust valve plate (21) is L 21 ; 0.3 <L 11 / L 21 <0.6; and / or, The width of the connection portion (201) of the third exhaust valve plate (23) and the connecting portion (202) of the third exhaust valve plate (23) is L 12 The maximum width of the end portion (203) of the third exhaust valve plate (23) is L 22 ; 0.3<L 12 / L 22 <0.6。 10. A valve assembly, characterized in that: The valve group assembly comprises the exhaust valve plate according to any one of claims 1 to 9.

11. A compressor, characterized in that: The compressor comprises the valve group assembly according to claim 10.

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