Exhaust assembly and compressor

Abstract

The utility model discloses an exhaust assembly and a compressor. The exhaust assembly comprises an exhaust valve seat, a limiting plate and a valve plate, the limiting plate comprises a first section and a second section which are adjacently arranged; the valve plate is located between the limiting plate and the exhaust valve seat, in the second direction, one side of the valve plate is connected between the first section and the exhaust valve seat in a pressed mode, and the side, away from the first section, of the valve plate is opposite to an exhaust hole in the exhaust valve seat and can move relative to the exhaust hole in the first direction; the side, away from the first section, of the valve block is provided with a first position for closing the exhaust hole and a second position for moving a first distance from the first position to open the exhaust hole, a second distance exists between the center point and the adjacent point of the first section in the second direction, and the ratio of the first distance to the second distance is not larger than 0.3. And the second section is provided with an exhaust structure. According to the exhaust assembly structure, the problem that the exhaust assembly structure is difficult to give consideration to both low noise and high exhaust energy efficiency is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of refrigeration equipment, in particular to an exhaust assembly and a compressor. BACKGROUND

[0002] In a compressor (such as a rotary compressor), a cylinder and an exhaust assembly are usually provided, and the exhaust assembly is used to open and close the exhaust port of the cylinder. The existing exhaust assembly usually includes a valve plate installed on an exhaust valve seat and a stopper. The valve plate can control the angle of the exhaust port when it is opened and closed through its own elastic stiffness, and the stopper is used to control the lift height of the valve plate when it is lifted to open the exhaust port. During the operation of the compressor, the valve plate will periodically hit the stopper and the exhaust valve seat when opening and closing the exhaust port, which will generate a lot of noise. Therefore, the structural design of the exhaust assembly has a great influence on the exhaust performance and noise level of the compressor. However, the existing exhaust assembly structure can improve the noise, but the exhaust resistance will increase, the exhaust energy efficiency will decrease, or the noise can not be effectively improved when the exhaust resistance is reduced, and it is difficult to balance the small noise and high exhaust energy efficiency. CONTENT OF THE UTILITY MODEL

[0003] The main purpose of the present application is to provide an exhaust assembly and a compressor to solve the problem that the structure of the exhaust assembly in the background art is difficult to balance the small noise and high exhaust energy efficiency.

[0004] According to one aspect of the present application, an exhaust assembly is provided, comprising:

[0005] an exhaust valve seat, the exhaust valve seat being provided with an exhaust hole;

[0006] a stop plate, the stop plate including a first section and a second section arranged adjacent to each other, the first section being laid flat on the exhaust valve seat and being fixedly connected with the exhaust valve seat, and in a first direction, the second section deviates away from the exhaust valve seat;

[0007] a valve plate, the valve plate being located between the stop plate and the exhaust valve seat, and in a second direction, one side of the valve plate is pressed between the first section and the exhaust valve seat, and the side of the valve plate away from the first section is arranged opposite to the exhaust hole and can move relative to the exhaust hole in the first direction;

[0008] The valve piece has a first position to close the exhaust hole and a second position to open the exhaust hole by moving a first distance from the first position, the first section has a center point fixed with the exhaust valve seat and an abutment point adjacent to the second section, and the center point and the abutment point have a second distance in the second direction, the ratio between the first distance and the second distance is not greater than 0.3, and the second section is provided with an exhaust structure for exhausting the airflow between the valve piece and the limiting plate.

[0009] Further, the ratio between the first distance and the second distance is also not less than 0.12; and / or, the value of the first distance is not greater than 1.85 mm.

[0010] Further, the exhaust structure includes a first through hole, which is provided on the side of the second section away from the first section in the second direction.

[0011] Further, in the first direction, the projection outer contour of the first through hole is located within the projection outer contour of the exhaust hole; and / or, the maximum width of the exhaust hole is not less than 5 mm and not greater than 7 mm.

[0012] Further, the second distance is L, the first through hole has a cross section in the second direction, and the area of the cross section is S, which satisfies the following relationship:

[0013]

[0014] Further, in the second direction, the length of the valve piece is A, the valve piece includes a connecting section and a third section in the second direction, the connecting section is located on the side of the valve piece close to the first section and is at least partially pressed between the first section and the exhaust valve seat, and the third section is arranged opposite to the exhaust hole to open or close the exhaust hole, wherein the third section includes:

[0015] a transition region, which is located on the side of the third section close to the connecting section in the second direction, and the length of the transition region in the second direction is B, the ratio between B and A is not less than 0.28 and not greater than 0.32;

[0016] a head region, which is located on the side of the transition region away from the connecting section in the second direction, and at least one of the head region and the transition region covers the exhaust hole when the third section closes the exhaust hole.

[0017] Further, in the third direction, the width of the transition region gradually increases towards the head region; and / or, the connecting section includes:

[0018] a fixed region, the fixed region being crimped on the exhaust valve seat by the first section;

[0019] an intermediate region, the intermediate region being located between the fixed region and the transition region, along the third direction, a width of the intermediate region being not greater than widths of the transition region and the fixed region.

[0020] Further, along the third direction, a minimum width of the transition region is E, a maximum width of the transition region is F, along the second direction, a width of the transition region at a position located between the fixed region and the intermediate region is K, K satisfies the following relationship:

[0021] 0.45≤K / (E+F)≤0.55.

[0022] Further, along the third direction, the transition region comprises oppositely arranged first and second side edges, along the first direction, a projected outer contour of the first side edge and a projected outer contour of the second side edge are both linear shapes.

[0023] Further,

[0024] According to another aspect of the present application, a compressor is also provided, the compressor comprising the exhaust assembly.

[0025] In the present application, the exhaust assembly comprises an exhaust valve seat, a limiting plate and a valve plate, the valve plate moving a first distance away from a side of the first section of the limiting plate from a first position closing the exhaust hole to a second position opening the exhaust hole, the first distance being a lift height generated by the limiting plate controlling the valve plate to lift relative to the exhaust hole to open the exhaust hole. Since a ratio between the first distance and the second distance is not greater than 0.3, if the first distance is h and the second distance is L, L will not be less than h / 0.3, thereby ensuring that a length of the first section along the first direction is relatively long, at this time, a length of a force arm of the valve plate when opening the exhaust hole is shortened, opening resistance is increased, a speed of the valve plate hitting the limiting plate is reduced, and a phenomenon of the valve plate delaying closing is also alleviated, thereby reducing a speed of the valve plate hitting the valve seat when closing the exhaust hole, and noise during operation of the compressor is greatly reduced, and noise improvement effect is remarkable. At the same time, since the exhaust structure is arranged at the second section of the limiting plate, when the valve plate moves away from the side of the first section to the second position along the first direction to open the exhaust hole, the exhaust structure can exhaust air flow located between the valve plate and the limiting plate, thereby reducing exhaust resistance when the compressor exhausts, and exhaust energy efficiency is improved. Therefore, the compressor adopting the exhaust assembly provided by the present application has both relatively small noise and relatively high exhaust energy efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0026] ​The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

[0027] Figure 1 Structure diagram of the exhaust assembly of the utility model;

[0028] Figure 2 Structure diagram of the exhaust assembly when the valve piece opens the exhaust hole;

[0029] Figure 3 And Figure 4 All are structure diagrams of the valve piece.

[0030] Among them, the above-mentioned drawings include the following signs:

[0031] 10, exhaust valve seat; 11, exhaust hole; 20, limiting plate; 21, first section; 22, second section; 221, first through hole; 30, valve piece; 31, connecting section; 311, fixed area; 111, third through hole; 312, middle area; 32, third section; 321, transition area; 211, first side edge; 212, second side edge; 322, head area. DETAILED DESCRIPTION

[0032] It should be noted that the embodiments and features in the embodiments in the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0033] It should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, operation, device, component and / or combination thereof.

[0034] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in the examples herein are not intended to limit the scope of the present application unless specifically so stated. It is to be understood that the actual dimensions of the various parts shown in the drawings are not necessarily to scale. Techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered part of the specification, where appropriate. In all examples shown and discussed herein, any specific values should be interpreted as merely illustrative and not as a limitation. Thus, other examples of exemplary embodiments can have different values. It is noted that like numbers and letters refer to like elements throughout the several views of the drawings, and thus, once an element is defined in one drawing that it is not necessary to discuss it further in subsequent drawings.

[0035] Because the existing exhaust assembly structure increases the exhaust resistance after improving the noise, or the noise is difficult to be effectively improved when the exhaust resistance is reduced. When the valve piece 30 itself is too small in rigidity or too short in straight section (force arm length), the rebound force of the valve piece 30 is small when the valve piece 30 is closed, which leads to that the pressure difference on both sides of the valve piece 30 is not enough to make the valve piece 30 completely closed at the end of the exhaust, and the valve piece 30 is closed after the exhaust is finished, at this time, the pressure difference on both sides of the valve piece 30 is the maximum value, which will lead to that the speed of the valve piece 30 hitting the exhaust valve seat 10 is too large, thereby causing the noise to increase. In order to solve the problem that the existing exhaust assembly structure is difficult to consider small noise and high exhaust energy efficiency, the length of the straight section of the valve piece 30 and the rigidity of the valve piece 30 itself can be appropriately increased in the embodiment. For this purpose, the first embodiment of the utility model provides an exhaust assembly. Please see Figures 1 to 4 , the exhaust assembly comprises an exhaust valve seat 10, a limiting plate 20 and a valve piece 30.

[0036] The exhaust valve seat 10 is provided with an exhaust hole 11 adapted to communicate with a compression chamber of a cylinder of the compressor for discharging the gas flow in the compression chamber. Generally, the compressor comprises a housing and a motor, a compressor pump body and the like located in the housing. The compressor pump body mainly comprises a crankshaft, a cylinder and a first bearing and a second bearing connected to opposite sides of the cylinder for supporting the crankshaft. The first bearing is an upper bearing or a main bearing, and the second bearing is a lower bearing or a secondary bearing. The upper bearing is located on the side of the cylinder close to the motor. The upper bearing is responsible for exhaust in addition to the supporting function. Therefore, the exhaust valve seat 10 can be arranged on the upper bearing. The exhaust valve seat 10 is integrally formed with the upper bearing, which is convenient to process and low in cost. The lower bearing mainly supports the distal end of the crankshaft extending out of the cylinder. The upper bearing and the lower bearing cooperate to prevent the crankshaft in rotation from being twisted or deviated, thereby improving the rotation accuracy and stability of the crankshaft. The motor is used to drive the rotation of the crankshaft. The crankshaft has an eccentric portion. The eccentric portion is connected to a piston in the cylinder through a connecting rod to drive the piston to rotate to compress the refrigerant gas entering the cylinder.

[0037] The limiting plate 20 comprises a first segment 21 and a second segment 22 arranged adjacently. The first segment 21 is arranged flat on the exhaust valve seat 10 and is fixedly connected with the exhaust valve seat 10, that is, the first segment 21 is a flat plate segment of the limiting plate 20 (i.e., the straight segment mentioned above). In a first direction (for example, the direction indicated by the arrow X in Figure 1 In the first direction, the second segment 22 deviates away from the exhaust valve seat 10, so that the second segment 22 and the exhaust valve seat 10 have a lift space for the valve piece 30 to lift and open the exhaust hole 11. The lift space defines a lift height of the valve piece 30 in the first direction when the valve piece 30 opens the exhaust hole 11. The second segment 22 can be a curved segment structure curved upward in the first direction, or can be an inclined segment arranged upwardly inclined. In this regard, the specific structure of the second segment 22 is not limited as long as it can limit the lift height of the valve piece 30.

[0038] The valve piece 30 in the embodiment is located between the limiting plate 20 and the exhaust valve seat 10. In a second direction (for example, the direction indicated by the arrow Y in Figure 1 In the second direction, one side of the valve piece 30 is pressed between the first segment 21 and the exhaust valve seat 10, so as to be fixedly connected to the exhaust valve seat 10. The other side of the valve piece 30 is arranged opposite to the exhaust hole 11 and can move relative to the exhaust hole 11 in the first direction. The valve piece 30 is usually a metal sheet structure with a certain flexible deformation, so that when the other side of the valve piece 30 is subjected to the pressure of the gas flow in the cylinder, the valve piece 30 can be deformed flexibly to move upward in the first direction to open the exhaust hole 11.

[0039] Specifically, the other side of the valve piece 30 has a first position (for example, the position indicated by the arrow A in Figure 1and a second position (as shown) from which the first distance is moved to open the exhaust hole 11. Figure 2 The first section 21 has a center point fixed with the exhaust valve seat 10 and an abutment point adjacent to the second section 22. In some embodiments, the limiting plate 20, the valve plate 30 and the exhaust valve seat 10 can be riveted together by rivets, which pass through the first section 21 of the limiting plate 20, the valve plate 30 and the exhaust valve seat 10 in sequence to fix them together. Then the position of the first section 21 passing through the rivet forms a second through hole, the position of the valve plate 30 passing through the rivet forms a third through hole 111, and the position of the valve seat passing through the rivet forms a fourth through hole. The center point is the midpoint of the limiting plate 20 on the axis of the rivet, or, when the second through hole is a circular hole, the center of the second through hole, when the second through hole is rectangular, polygonal, the center point of the diagonal of the second through hole, and when the second through hole is elliptical, the center point of the symmetry center of the second through hole. The abutment point is the starting point of the second section 22 when it is bent and deformed upward to the side of the first section 21, that is, the abutment point is the position point of the second section 22 and the first section 21 on the same horizontal plane.

[0040] In the second direction, the center point to the abutment point has a second distance, and the ratio between the first distance and the second distance is not greater than 0.3. If the first distance is h (unit: millimeter) and the second distance is L (unit: millimeter), then h / L≤0.3, L≥h / 0.3, which ensures that the size of L is not less than h / 0.3, thereby lengthening the length of the first section 21. Within the range of h / L≤0.3, the length of the straight section is appropriately increased, which can shorten the length of the force arm when the valve plate 30 opens the exhaust hole 11, increase the opening resistance of the valve plate 30, thereby reducing the speed of the valve plate 30 hitting the limiting plate 20 when it is opened, and reducing the noise generated when the valve plate 30 opens the exhaust hole 11. Moreover, it can also alleviate the phenomenon of delayed closing of the valve plate 30, reduce the speed of the valve plate 30 hitting the exhaust valve seat 10 when it is closed, thereby significantly reducing the noise generated during the operation of the compressor. The second section 22 of the present embodiment is also provided with an exhaust structure, which is used to exhaust the gas flow located (or flowing to) between the valve plate 30 and the limiting plate 20 when the valve plate 30 opens the exhaust hole 11 to exhaust the gas flow in the cylinder, thereby reducing the exhaust resistance and ensuring that the noise is reduced while the exhaust efficiency of the compressor is improved. The ratio of h / L in the present embodiment can specifically include one of 0.3, 0.28, 0.27, 0.25, 0.23, 0.21, 0.2, 0.19, 0.17, 0.16, 0.14, 0.13, 0.12, etc.

[0041] It can be seen that in the embodiment, the exhaust assembly includes the exhaust valve seat 10, the limiting plate 20, and the valve plate 30, the valve plate 30 moves a first distance away from the side of the first section 21 of the limiting plate 20 from the first position of closing the exhaust hole 11 to the second position of opening the exhaust hole 11, and the first distance is the lift height of the limiting plate 20 controlling the valve plate 30 to rise relative to the exhaust hole 11 to open the exhaust hole 11. Since the ratio between the first distance and the second distance is not greater than 0.3, if the first distance is h and the second distance is L, then L will not be less than h / 0.3, thereby ensuring that the length of the first section 21 in the first direction is relatively long, at this time, the length of the force arm of the valve plate 30 when opening the exhaust hole 11 is shortened, the opening resistance is increased, the speed of the valve plate 30 hitting the limiting plate 20 is reduced, and the phenomenon of the valve plate 30 delaying closing is also alleviated, thereby reducing the speed of the valve plate 30 hitting the valve seat when closing the exhaust hole 11, and the noise during the operation of the compressor is greatly reduced, and the noise improvement effect is significant. At the same time, since the exhaust structure is arranged on the second section 22 of the limiting plate 20, when the valve plate 30 moves away from the side of the first section 21 in the first direction to the second position to open the exhaust hole 11, the exhaust structure can exhaust the airflow between the valve plate 30 and the limiting plate 20, thereby reducing the exhaust resistance when the compressor exhausts, and improving the exhaust energy efficiency. Therefore, the compressor using the exhaust assembly provided in the embodiment has relatively small noise and relatively high exhaust energy efficiency.

[0042] In order to avoid the exhaust energy efficiency not being able to reach the expectation due to the second distance being too large under the same size of the first distance, the embodiment also ensures that the ratio between the first distance and the second distance is also not less than 0.12. That is, h / L≥0.12, thereby ensuring that the noise is reduced while avoiding the first section 21 causing the exhaust energy efficiency to be attenuated too obviously, so that the energy efficiency attenuation amount caused by the first section 21 is much smaller than the improvement amount of the exhaust structure for improving the exhaust energy efficiency, so that the overall exhaust energy efficiency of the compressor using the exhaust assembly is improved. Therefore, the second distance in the embodiment finally satisfies the following relationship:

[0043] 0.12≤h / L≤0.3.

[0044] Therefore, while the length of the first section 21 is lengthened to reduce the noise, the exhaust energy efficiency of the exhaust assembly can be improved. The ratio of h / L in the embodiment can specifically include one of 0.3, 0.28, 0.27, 0.25, 0.23, 0.21, 0.2, 0.19, 0.17, 0.16, 0.14, 0.13, 0.12, and the like.

[0045] Specifically, Table 1 below shows the relevant test data of the exhaust assembly when the compressor exhausts at different values of the second distance. The cooling capacity in Table 1 is the refrigeration capacity of the compressor, and the input is the power consumed by the compressor to generate these refrigeration capacities, and the power is in watts.

[0046] Ratio Noise (dB Exhaust energy efficiency Cooling capacity (W) Input (W) 0.1 67 3.35 4129 1233 0.12 62 3.33 4129 1240 0.18 60 3.33 4129 1240 0.2 60 3.30 4120 1249 0.25 59 3.28 4138 1261 0.31 66 3.20 4121 1286

[0047] Table 1

[0048] As can be seen from Table 1, when the ratio of h / L is not less than 0.12 and not greater than 0.3, the noise is obviously smaller than that when the ratio is 0.1 and 0.31, and a higher exhaust energy efficiency can also be obtained, which is not less than 3.28. When the ratio of h / L is between 0.12 and 0.3, the compressor does not need to consume excessive power to obtain a higher cooling capacity, for example, when the input is 1240W, the cooling capacity is 4129W, the exhaust energy efficiency is 3.33, and the noise is only 62dB. Although the cooling capacity slightly fluctuates when the ratio is 0.2, the noise is lower, the exhaust energy efficiency is higher, and the overall performance of the compressor is still the desired state.

[0049] The first distance in the embodiment is not greater than 1.85mm, h≤1.85mm. That is, the lift height of the second section 22 of the limiting plate 20 controlling the rising height of the valve plate 30 is not greater than 1.85mm. When h is in this range, the time for the valve plate 30 to open and close can be reduced, the airflow flow is ensured to be faster, the working efficiency of the compressor is ensured, the mechanical wear of the valve plate 30 on the exhaust valve seat 10 is reduced, and the service life of the exhaust assembly is prolonged. In addition, the impact force generated when the valve plate 30 opens and closes the exhaust hole 11 can be reduced, and the noise level of the compressor during operation can be further reduced. The size of h can specifically include one of 1.85mm, 1.84mm, 1.82mm, 1.80mm, 1.79mm, 1.78mm, 1.76mm, 1.74mm, 1.72mm, 1.70mm, etc., or other values not greater than 1.85mm except the above-mentioned values. In this embodiment, the values are not enumerated one by one.

[0050] In some embodiments, the exhaust structure includes a first through hole 221, which is arranged on the side of the second section 22 away from the first section 21 along the second direction. The first through hole 221 is simple and convenient to process. During the process of the airflow in the compressor being discharged from the exhaust hole 11, the airflow can be discharged from the first through hole 221, the exhaust resistance is reduced, and the exhaust energy efficiency is improved. The number of the first through hole 221 can be one or at least two, which is not limited in this embodiment. In some embodiments, the exhaust structure can also be an exhaust passage arranged in the second section 22. The exhaust passage can extend from the end of the first section 21 close to the valve plate 30 to the end away from the valve plate 30 in a curved shape, such as an arc-shaped passage with a certain arc, an S-shaped passage, etc., which can ensure that the exhaust efficiency of the airflow is not affected while reducing the impact force between the airflow and the limiting plate 20, and further reducing the noise.

[0051] In the first direction, the projected outer contour of the first through hole 221 is located within the projected outer contour of the exhaust hole 11, so as to ensure that the gas flow out of the exhaust hole 11 can be timely discharged by the first through hole 221, thereby improving the exhaust efficiency of the first through hole 221. The shape type of the first through hole 221 in the embodiment can be one of a circular hole, an elliptical hole, a square hole, a polygonal hole, etc.

[0052] In some embodiments, the maximum width of the exhaust hole 11 is not less than 5 mm and not greater than 7 mm, so as to ensure that the exhaust hole 11 is not too large to affect the compression effect of the compressor on the gas, or too small to affect the exhaust efficiency of the compressor. The maximum width of the exhaust hole 11 can specifically include one of 5 mm, 5.2 mm, 5.3 mm, 5.4 mm, 5.7 mm, 5.8 mm, 6 mm, 6.1 mm, 6.3 mm, 6.5 mm, 6.7 mm, 6.8 mm, 7 mm, etc. The shape of the exhaust hole 11 can specifically include one of a circular hole, an elliptical hole, a square hole (such as a square hole or a rectangular hole), a polygonal hole, etc. When the exhaust hole 11 is a circular hole, the maximum width is the diameter D of the circular hole, i.e. 5≤D≤7. When the exhaust hole 11 is an elliptical hole, the maximum width is the length of the major axis of the elliptical hole. When the exhaust hole 11 is a square hole, the maximum width is the width or length of the square hole. When it is a rectangular hole, the maximum width is the length of the rectangular hole, etc.

[0053] When the second distance is L, the first through hole 221 has a cross section in the second direction, and the area of the cross section is S. When the first through hole 221 is a circular hole, S=πR 2 , R is the radius of the circular hole (i.e. D / 2). S and L satisfy the following relationship:

[0054]

[0055] Therefore, for the first section 21 of different sizes L, the embodiment can ensure that the first through hole 221 is not too small to significantly improve the exhaust efficiency, nor too large to reduce the structural strength of the limiting plate 20, thereby improving the reliability of the entire exhaust assembly, when the cross-sectional area of the first through hole 221 satisfies the above relationship. The ratio of S / L can specifically include one of 0.1, 0.11, 0.12, 0.13, 0.14, 0.15, 0.16, 0.17, 0.18, 0.19, 0.2, etc.

[0056] As shown in Table 2, Table 2 shows the exhaust efficiency of the exhaust assembly when the second section 22 of the limiting plate 20 is not provided with the first through hole 221 and is provided with the second through hole 221.

[0057] Ratio Exhaust energy efficiency Without hole 3.24 0.12 3.28 0.2 3.3 0.25 3.3

[0058] Table 2

[0059] As shown in Table 2, when the limiting plate 20 does not have the first through hole 221, the exhaust efficiency is 3.24, which is significantly lower than the exhaust efficiency when the first through hole 221 is provided. When the ratio is 0.12, the exhaust efficiency is When the ratio is 0.2, the exhaust efficiency is 3.3.

[0060] Please see Figure 3 Along the second direction, the length of valve plate 30 is A (A is... Figure 3 As shown in the length segment, along the second direction, the valve plate 30 includes a connecting segment 31 and a third segment 32. The connecting segment 31 is located on the side of the valve plate 30 near the first segment 21 and is at least partially pressed between the first segment 21 and the exhaust valve seat 10. The length of the first segment 21 can reduce the length of the lever arm of the valve plate 30 located in the connecting segment 31 when it is open, thereby reducing noise. The third segment 32 is disposed opposite to the exhaust port 11 to open or close the exhaust port 11. The third segment 32 includes a transition region 321 and a head region 322. Along the second direction, the transition region 321 is located on the side of the third segment 32 near the connecting segment 31. Along the second direction, the length of the transition region 321 is B, and the ratio between B and A is not less than 0.28 and not greater than 0.32, that is, 0.28≤B / A≤0.3. Therefore, when B / A is within this value range, it ensures the structural rigidity of the transition region 321, thereby increasing the overall rigidity of the valve plate 30 and reducing the noise generated when the valve plate 30 opens and closes the exhaust port 11. It also prevents the valve plate 30 from reducing the overall exhaust efficiency of the compressor due to excessive rigidity. The specific value of B / A can include one of the following: 0.28, 0.281, 0.283, 0.285, 0.287, 0.29, 0.292, 0.294, 0.295, 0.298, 0.3, or any other value between 0.28 and 0.3. Along the second direction, the head region 322 is located on the side of the transition region 321 away from the connecting section 31. When the third section 32 closes the exhaust port 11, at least one of the head region 322 and the transition region 321 covers the exhaust port 11. That is, the head region 322 can completely cover the closed exhaust port 11, or the transition region 321 can completely cover the closed exhaust port 11, or the parts of the head region 322 and the transition region 321 closest to the head region 322 can simultaneously cover the exhaust port 11. Along the first direction, the projected outer contour of the head region 322 can be arc-shaped.

[0061] Along a third direction (e.g.) Figure 3The width of the transition region 321 gradually increases in the direction close to the head region 322, so that the transition region 321 has better rigidity and reduces the noise level.

[0062] In some embodiments, the connecting section 31 includes a fixed region 311 and an intermediate region 312. The fixed region 311 is crimped on the exhaust valve seat 10 by the first section 21. The rivet passes through the fixed region 311, and the third through hole 111 is located in the fixed region 311, that is, the rivet passes through the third through hole 111 to achieve crimping and fixing of the fixed region 311 on the first section 21 and the exhaust valve seat 10. The intermediate region 312 is located between the fixed region 311 and the transition region 321, and the width of the intermediate region 312 in the third direction is not greater than the width of the transition region 321 and the fixed region 311. Thus, while limiting the length of the force arm of the valve sheet 30 by the first section 21 of the limiting plate 20, the presence of the intermediate region 312 can ensure that the valve sheet 30 can smoothly open the exhaust hole 11, reduce noise, and improve the reliability of the valve sheet 30 in opening and closing the exhaust hole 11.

[0063] wherein the minimum width of the transition region 321 in the third direction is E, and the maximum width of the transition region 321 is F. As shown in Figure 3 the minimum width E is the width of the transition region 321 away from the head region 322. When the intermediate region 312 is a structure section with a constant width, the minimum width E is the width of the intermediate region 312. The maximum width F is the width of the transition region 321 close to the head region 322, which is also the maximum width of the head region 322 in the third direction. In the second direction, the width of the transition region 321 at is K, and K satisfies the following relationship:

[0064] 0.45≤K / (E+F)≤0.55.

[0065] Thus, by making the ratio of K / (E+F) not less than 0.45 and not greater than 0.55, the present embodiment ensures that the transition region 321 smoothly transitions from the intermediate region 312 to the head region 322, so that the rigidity of the valve sheet 30 is within an appropriate range, without reducing the exhaust efficiency due to excessive rigidity of the valve sheet 30, or increasing the noise due to insufficient rigidity of the valve sheet 30.

[0066] As shown in Figure 4As shown, along the third direction, the transition region 321 includes the first side edge 211 and the second side edge 212 oppositely arranged, and along the first direction, the projection outer contour of the first side edge 211 and the projection outer contour of the second side edge 212 are both linear shapes. Thus, the transition region 321 is a fan-shaped transition structure with one side of a larger opening facing the head region 322, and the fan-shaped transition structure can increase the rigidity of the valve plate 30 and significantly improve the noise reduction effect.

[0067] The utility model discloses a second embodiment further provides a kind of compressor, and the compressor includes exhaust component.The structure of exhaust component specifically please refer to the content provided by the utility model first embodiment, and this embodiment does not repeat here.

[0068] For ease of description, spatial relative terms, such as "over," "above," "top," "on," and the like, can be used herein to describe a device or feature's position as shown in the figures. It will be understood that spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if a device in the figures is inverted, then a device described as "above" or "on" other devices or structures would then be oriented "below" or "on" the other devices or structures. Accordingly, the exemplary term "above" can encompass both an orientation of above and below. The devices can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. The terms "first," "second," and the like, do not necessarily have an ordinal meaning by themselves, unless specifically stated, but are generally just used to distinguish two or more different elements.

[0069] In addition, it needs to be explained that the words "first", "second" and the like are used to limit parts, only for the convenience of distinguishing the corresponding parts, and the above words have no special meaning unless otherwise stated, so it cannot be understood as a limitation on the protection scope of the present application.

[0070] The above is only the preferred embodiment of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An exhaust assembly characterized by, The exhaust valve seat (10) is provided with an exhaust hole (11); The limiting plate (20) includes a first section (21) and a second section (22) arranged adjacent to each other, the first section (21) is laid flat on the exhaust valve seat (10) and is fixedly connected with the exhaust valve seat (10), and the second section (22) deviates away from the exhaust valve seat (10) in a first direction; The valve piece (30) is located between the limiting plate (20) and the exhaust valve seat (10), and one side of the valve piece (30) is pressed between the first section (21) and the exhaust valve seat (10) in a second direction, and the side of the valve piece (30) away from the first section (21) is arranged opposite to the exhaust hole (11) and can move relative to the exhaust hole (11) in the first direction; Wherein, the side of the valve piece (30) away from the first section (21) has a first position for closing the exhaust hole (11), and a second position for opening the exhaust hole (11) by moving a first distance from the first position, the first section (21) has a center point fixed with the exhaust valve seat (10) and an abutting point abutting with the second section (22), and the center point to the abutting point has a second distance in the second direction, the ratio between the first distance and the second distance is not greater than 0.3, and the second section (22) is provided with an exhaust structure for exhausting the airflow between the valve piece (30) and the limiting plate (20). The ratio between the first distance and the second distance is also not less than 0.12; and / or, the value of the first distance is not greater than 1.85mm.

2. The exhaust assembly of claim 1, wherein, The exhaust structure includes a first through hole (221) arranged through the side of the second section (22) away from the first section (21) in the second direction.

3. The exhaust assembly of claim 1, wherein, In the first direction, the projection outer contour of the first through hole (221) is located within the projection outer contour of the exhaust hole (11); and / or, the maximum width of the exhaust hole (11) is not less than 5mm and not greater than 7mm.

4. The exhaust assembly of claim 3, wherein, The second distance is L, the first through hole (221) has a cross section in the second direction, and the area of the cross section is S, S and L satisfy the following relationship:

5. An exhaust assembly according to claim 3 or 4, wherein, In the second direction, the length of the valve piece (30) is A, and the valve piece (30) includes a connecting section (31) and a third section (32) in the second direction, the connecting section (31) is located on the side of the valve piece (30) close to the first section (21) and is at least partially pressed between the first section (21) and the exhaust valve seat (10), and the third section (32) is arranged opposite to the exhaust hole (11) to open or close the exhaust hole (11), wherein the third section (32) includes:

6. The exhaust assembly of claim 1, wherein, ​ a transition region (321) located on one side of the third section (32) close to the connecting section (31) along the second direction, a length of the transition region (321) along the second direction being B, a ratio between B and A being not less than 0.28 and not more than 0.32; a head region (322) located on one side of the transition region (321) away from the connecting section (31) along the second direction, at least one of the head region (322) and the transition region (321) covering the exhaust hole (11) when the third section (32) closes the exhaust hole (11).

7. The exhaust assembly of claim 6, wherein, along the third direction, a width of the transition region (321) gradually increases towards the head region (322); and / or, the connecting section (31) comprises: a fixed region (311) being press-fitted on the exhaust valve seat (10) through the first section (21); an intermediate region (312) located between the fixed region (311) and the transition region (321), a width of the intermediate region (312) along the third direction being not more than a width of the transition region (321) and the fixed region (311).

8. The exhaust assembly of claim 7, wherein, In the third direction, the minimum width of the transition region (321) is E, the maximum width of the transition region (321) is F, in the second direction, the width of the transition region (321) at K satisfies the following relationship: 0.45≤K / (E+F)≤0.

55.

9. The exhaust assembly of claim 7, wherein, along the third direction, the transition region (321) comprises oppositely arranged first and second side edges (211, 212), and a projection outer contour of the first side edge (211) and a projection outer contour of the second side edge (212) are both linear along the first direction.

10. A compressor characterized by, The exhaust assembly comprises any one of claims 1 to 9.

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