Limiter, exhaust component, compressor and refrigeration system

Abstract

Embodiments of the present invention provide a limiter, an exhaust assembly, a compressor, and a refrigeration system. The limiter is used for the exhaust assembly. The limiter includes a body portion and a recessed portion. The body portion has an installation end and a free end facing away from each other, and the installation end of the body portion can be connected to the exhaust valve of the exhaust assembly. The recessed portion is located on the surface of the body portion, and the distance between the recessed portion and the installation end of the body portion is less than the distance between the recessed portion and the free end of the body portion. The limiter provided by the embodiments of the present invention mainly designs the recessed portion based on the target noise frequency on the premise of ensuring that the modal frequency remains unchanged and only increasing the thickness of the limiter, which can improve the structural stiffness of the limiter. On the one hand, the structure of this limiter is simple in design, simple in manufacturing process, low in cost, and convenient for mass production. On the other hand, it can reduce the vibration response of the limiter without causing the deterioration of other frequency noises, and has an obvious effect on reducing medium and high frequency noises.

Description

Technical Field

[0001] Embodiments of the present invention relate to the technical field of compressors, and more particularly, to a limiter, an exhaust assembly, a compressor, and a refrigeration system. Background Art

[0002] At present, most compressors are designed towards miniaturization and high rotational speed. The problem of noise during the operation of compressors has become increasingly prominent. When the compressor is operating, the exhaust valve plate reciprocates between the lift limiter and the valve seat under the action of the air flow. The air flow excites the limiter to vibrate and generate noise. Summary of the Invention

[0003] Embodiments of the present invention aim to solve at least one of the technical problems existing in the prior art.

[0004] To this end, a first aspect of the embodiments of the present invention provides a limiter.

[0005] A second aspect of the embodiments of the present invention provides an exhaust assembly.

[0006] A third aspect of the embodiments of the present invention provides a compressor.

[0007] A fourth aspect of the embodiments of the present invention provides a refrigeration system.

[0008] In view of this, according to a first aspect of the embodiments of the present invention, a limiter for an exhaust assembly is provided. The limiter includes a body portion and a recessed portion. The body portion has an installation end and a free end facing away from each other. The installation end of the body portion can be connected to the exhaust valve of the exhaust assembly. The recessed portion is located on the surface of the body portion, and the distance between the recessed portion and the installation end of the body portion is less than the distance between the recessed portion and the free end of the body portion.

[0009] The limiter provided by the embodiments of the present invention is specifically applied to the exhaust assembly of a compressor. The exhaust valve of the exhaust assembly has an exhaust port, which can communicate with the cylinder cavity of the compressor, and the exhaust port is used to discharge the refrigerant in the cylinder cavity. The structure of the body portion can refer to the limiter in the related art, and its installation end is connected to the exhaust valve, so that the body portion forms a cantilever structure. The limiter is arranged corresponding to the exhaust port. When the air flow of high-pressure gaseous refrigerant is discharged from the exhaust port, it will contact the limiter, causing the limiter to be excited to vibrate. By simply increasing the thickness of the limiter appropriately, the stiffness of the limiter can be significantly improved, thereby reducing the vibration response of the limiter, helping to reduce the vibration noise of the limiter, and further reducing the target frequency noise of the exhaust assembly applying this limiter. However, according to the formula of modal frequency (Where Ω is the modal frequency, k is the stiffness, and m is the mass), it can be seen that since the mass of the stopper increases slightly while the stiffness increases significantly at this time, its modal frequency will be greatly improved. For example, when the thickness of the stopper increases from 2.9 mm to 3.4 mm, its modal frequency will increase from about 2000 Hz to about 2600 Hz, which is close to the medium and high frequency noise, thus leading to the deterioration of the medium and high frequency noise. By providing a recess on the surface of the body part (the structure obtained by increasing the thickness of the stopper in the related art), that is, removing a part of the structure of the body part, the mass of the body part can be slightly reduced and its stiffness can be weakened. As a cantilever structure, by specifically setting the recess at a position close to the mounting end of the body part, compared with setting it at a position close to the free end of the body part, the stiffness of the body part can be significantly reduced (but it will still be higher than the stiffness before the thickness is increased), that is, the stiffness of the body part is significantly reduced while slightly reducing the mass of the body part, so that the modal frequency of the finally obtained stopper drops back to about 2000 Hz, thus not causing the deterioration of the medium and high frequency noise. The stopper provided by the embodiment of the present invention is mainly based on the target noise frequency. On the premise of ensuring that the modal frequency remains unchanged and only increasing the thickness of the stopper, the recess is designed to improve the structural stiffness of the stopper. On the one hand, the stopper structure has a simple design, simple manufacturing process, low cost, and is convenient for mass production. On the other hand, it can reduce the vibration response of the stopper, and at the same time does not cause the deterioration of the noise of other frequencies, and has an obvious reduction effect on the medium and high frequency noise.

[0010] In addition, the stopper provided by the above technical solution of the present invention further has the following additional technical features:

[0011] In a possible design, the recess is a groove.

[0012] In this design, there are no restrictions on the depth and shape of the recess, as long as a part of the structure of the body part can be removed. Specifically setting the recess as a groove with a regular shape and a definite depth can ensure the simple structure of the stopper, easy production, and convenient for mass production of the stopper. Specifically, the groove can be a waist-shaped groove, and the waist-shaped groove can extend along the length direction of the body part. The groove can also be a trapezoidal groove, a circular groove, a square groove, a rhombic groove or any other shape of groove, as long as the stopper can reduce the noise of the target frequency.

[0013] In a possible design, the groove is a through groove.

[0014] In this design, specifically setting the groove as a through groove, that is, it can extend along the surface of the body part and penetrate the body part. In the case of the same reduction amplitude of the mass of the body part, compared with the closed groove, the through groove has a stronger weakening effect on the stiffness of the body part, which helps to reduce the modal frequency of the stopper, thus ensuring that the noise of other frequencies is not deteriorated.

[0015] In a possible design, the recessed portion is symmetrical about the central axis of the main body.

[0016] In this design, the shape of the recessed portion is specifically defined to be symmetrical about the central axis of the main body (that is, the central axis of the stopper), which can ensure the overall structural symmetry of the stopper. On the one hand, this structural design can avoid the reliability and vibration noise problems caused by uneven force on the left and right parts of the central axis of the main body, which helps to improve product reliability. On the other hand, this design can make the overall structure of the stopper simple and easy to produce, which is convenient for mass production of the stopper.

[0017] In a possible design, the main body has a limiting surface, the limiting surface can face the exhaust valve, and the recessed portion is arranged to avoid the limiting surface.

[0018] In this design, the exhaust valve specifically includes a valve seat and an exhaust valve plate, the exhaust port is arranged on the valve seat, and the exhaust valve plate is used to open or close the exhaust port. The stopper is connected to the exhaust valve, specifically located on the side of the exhaust valve plate away from the valve seat, and part of the surface of the stopper facing the exhaust valve plate can be used as a limit surface. When the cylinder cavity of the compressor is exhausted outward, the exhaust valve plate will be pushed onto the limit surface of the stopper by the discharged high-pressure gas to limit the opening degree of the exhaust valve plate, so the exhaust valve plate will hit the limit surface heavily under the action of the high-pressure gas. By arranging the recessed portion in the area of the body avoiding the limit surface, the limit surface can be ensured to be flat, and the stress concentration point when the exhaust valve plate hits the limit surface can be reduced to avoid rapid fatigue fracture of the exhaust valve plate, which helps to ensure the reliable operation of the exhaust valve plate and extend the service life of the exhaust valve plate. Specifically, the recessed portion is arranged on the surface of the body away from the limit surface. Since the limit surface of the body and the surface area away from the limit surface are large, the recessed portion can be conveniently arranged, which improves the flexibility of the arrangement scheme. Furthermore, with the central axis of the main body as a reference, the surface spans the left and right sides of the main body, and can achieve symmetry of the recessed portion with respect to the central axis of the main body.

[0019] In a possible design, the body has a first side and a second side that are separated from each other, the exhaust valve can be connected to the first side of the body, the body includes a mounting portion and a bending portion, the mounting portion can be connected to the exhaust valve, the bending portion is connected to the mounting portion, and the bending portion is bent toward the second side of the body, wherein the recessed portion is located on the surface of the mounting portion and / or the bending portion.

[0020] In this design, the body part is specifically defined to include a connected installation part and a bent part. The installation part can achieve connection with the exhaust valve, specifically by connecting with both the exhaust valve plate and the valve seat simultaneously. At this time, the installation part can be a flat structure to be tightly connected with the exhaust valve. The bent part is bent relative to the installation part, specifically bent towards the second side where the exhaust valve is not provided, corresponding to the exhaust port and located above the exhaust port. The wedge-shaped space enclosed between the bent part and the valve seat is the movement range of the exhaust valve plate. The bent part can limit the upper limit of the movement position of the exhaust valve plate to limit the opening degree of the exhaust valve plate. That is, the surface of the bent part facing the second side of the body part constitutes the limiting surface. One end of the installation part away from the bent part is the installation end of the body part, and one end of the bent part away from the installation part is the free end of the body part. By setting the recessed part on the surface of the installation part, it can be fully ensured that the recessed part is close to the installation end of the body part, thereby significantly reducing its stiffness while slightly reducing the mass of the body part. Thus, when the overall thickness of the limiter is increased and its stiffness is significantly improved, the modal frequency of the limiter can drop, so that both the vibration response of the limiter can be reduced and other frequency noises will not deteriorate, and the medium and high-frequency noises can be significantly reduced. The recessed part can also be set on the surface of the bent part to enrich the setting scheme of the recessed part and meet different actual structural requirements. It can be understood that to ensure that the recessed part is close to the installation end of the body part, when the recessed part is set on the surface of the bent part, it should be set as close to the installation part as possible. In addition, the recessed part can also be located on the surfaces of both the installation part and the bent part to further enrich the setting scheme of the recessed part.

[0021] Specifically, the number of recessed parts can be at least one for flexible setting. When the number of recessed parts is at least two, the shapes of the respective recessed parts can be exactly the same to simplify the structure, or not completely the same, that is, they can be partially the same or all different, so as to set the recessed parts according to the actual structure and improve the design accuracy. Among them, for the case where the recessed part is on the surface of the installation part, that is, all the recessed parts are set on the surface of the installation part. For the case where the recessed part is on the surface of the bent part, that is, all the recessed parts are set on the surface of the bent part. For the case where the recessed part is on the surfaces of both the installation part and the bent part, it can be that one recessed part straddles the surfaces of both the installation part and the bent part. On the one hand, it can provide enough space to set the recessed part. On the other hand, at the connection position of the installation part and the bent part, the bending amplitude of the body part is relatively large. Setting the recessed part here has a stronger weakening effect on the stiffness of the body part, and the size and depth of the recessed part can be reduced, that is, the amount of removal of the structure of the body part can be reduced to improve the effect of reducing the modal frequency of the limiter. It can also be that the number of recessed parts is at least two, and the recessed parts are distributed on the surfaces of both the installation part and the bent part, or both of these situations can exist. The above are all implementation manners of the present invention and fall within the protection scope of the present invention.

[0022] In a possible design, the stopper further includes: a vent hole that penetrates the bent portion along the thickness direction of the bent portion.

[0023] In this design, the stopper further includes a vent hole provided on the bent portion. The high-pressure gas discharged from the exhaust port of the exhaust valve can pass through the vent hole to weaken the impact of the high-pressure gas on the stopper. That is to say, the vent hole can balance the air pressure on both sides of the stopper and prevent the stopper's own structure from being damaged due to unequal air pressure on both sides.

[0024] It should be noted that the width of the part of the bent portion where the vent hole is provided is greater than the width of other parts.

[0025] According to the second aspect of the embodiments of the present invention, an exhaust assembly is provided, including the stopper provided by any of the above designs, and thus has all the beneficial effects of the stopper, which will not be elaborated here.

[0026] According to the third aspect of the embodiments of the present invention, a compressor is provided, including the exhaust assembly provided by any of the above designs, and thus has all the beneficial effects of the exhaust assembly, which will not be elaborated here.

[0027] According to the fourth aspect of the embodiments of the present invention, a refrigeration system is provided, including the compressor provided by any of the above designs, and thus has all the beneficial effects of the compressor, which will not be elaborated here.

[0028] The additional aspects and advantages of the present invention will be given in the following description section, some of which will become apparent from the following description, or will be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The above and / or additional aspects and advantages of the present invention will become apparent and be readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0030] Figure 1 A partial structural schematic diagram of a compressor according to an embodiment of the present invention is shown;

[0031] Figure 2 A top view of a stopper according to an embodiment of the present invention is shown;

[0032] Figure 3 A structural schematic diagram of a stopper according to an embodiment of the present invention is shown;

[0033] Figure 4 A top view of a stopper according to another embodiment of the present invention is shown;

[0034] Figure 5 A structural schematic diagram of a stopper according to another embodiment of the present invention is shown.

[0035] Among them, Figures 1 to 5 The corresponding relationship between the reference numerals in the drawings and the component names is as follows:

[0036] 1 exhaust assembly, 100 limiter, 110 body part, 112 mounting part, 1122 assembly port, 114 bending part, 1142 limiting surface, 120 recessed part, 130 ventilation port, 200 exhaust valve, 210 exhaust port, 220 valve seat, 230 exhaust valve plate, 300 fastener, 4 bearing. Detailed implementation manners

[0037] In order to more clearly understand the above objects, features and advantages of the present invention, the present invention will be further described in detail below with reference to the drawings and specific implementation manners. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0038] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited by the specific embodiments disclosed below.

[0039] Next, refer to Figures 1 to 5 to describe the limiter 100, the exhaust assembly 1, the compressor and the refrigeration system provided according to some embodiments of the present invention.

[0040] As Figure 1 shown, an embodiment of the first aspect of the present invention provides a limiter 100 for an exhaust assembly 1. The limiter 100 includes a body part 110 and a recessed part 120. The body part 110 has an opposite mounting end and a free end, and the mounting end of the body part 110 can be connected to the exhaust valve 200 of the exhaust assembly 1. The recessed part 120 is located on the surface of the body part 110, and the distance between the recessed part 120 and the mounting end of the body part 110 is less than the distance between the recessed part 120 and the free end of the body part 110.

[0041] The stopper 100 provided by the embodiment of the present invention is specifically applied to the exhaust assembly 1 of a compressor. The exhaust valve 200 of the exhaust assembly 1 has an exhaust port 210, and the exhaust port 210 can communicate with the cylinder cavity of the compressor. The exhaust port 210 is used to discharge the refrigerant in the cylinder cavity. The structure of the body portion 110 can refer to the stopper in the related art, and its mounting end is connected to the exhaust valve 200, so that the body portion 110 forms a cantilever structure. The stopper 100 is arranged corresponding to the exhaust port 210. When the high-pressure gaseous refrigerant flows out from the exhaust port 210, it will contact the stopper 100, causing the stopper 100 to vibrate under excitation. By simply increasing the thickness of the stopper 100 appropriately, the stiffness of the stopper 100 can be significantly improved, thereby reducing the vibration response of the stopper 100, helping to reduce the vibration noise of the stopper 100, and further reducing the target frequency noise of the exhaust assembly 1 applying the stopper 100. However, according to the formula of the modal frequency (where Ω is the modal frequency, k is the stiffness, and m is the mass), it can be seen that since the mass of the stopper 100 increases slightly at this time while the stiffness increases significantly, its modal frequency will be greatly increased. For example, when the thickness of the stopper 100 increases from 2.9 mm to 3.4 mm, its modal frequency will increase from about 2000 Hz to about 2600 Hz, which is close to the medium and high frequency noise, thereby causing the deterioration of the medium and high frequency noise. By providing a recess 120 on the surface of the body portion 110 (which is the structure obtained by increasing the thickness of the stopper in the related art), that is, removing a part of the structure of the body portion 110, the mass of the body portion 110 can be slightly reduced and its stiffness can be weakened. As a cantilever structure, by specifically arranging the recess 120 at a position close to the mounting end of the body portion 110, compared with the position close to the free end of the body portion 110, the stiffness of the body portion 110 can be significantly reduced (but still higher than the stiffness before the thickness is increased), that is, the stiffness of the body portion 110 is significantly reduced with a small reduction in the mass of the body portion 110, so that the modal frequency of the finally obtained stopper 100 drops back to about 2000 Hz, thus not causing the deterioration of the medium and high frequency noise. The stopper 100 provided by the embodiment of the present invention is mainly designed with the recess 120 based on the target noise frequency on the premise of ensuring that the modal frequency remains unchanged and only increasing the thickness of the stopper 100, which can improve the structural stiffness of the stopper 100. On the one hand, the structure of the stopper 100 is simple in design, simple in process manufacturing, low in cost, and convenient for mass production. On the other hand, it can reduce the vibration response of the stopper 100, and at the same time does not cause the deterioration of other frequency noises, and has an obvious reduction effect on medium and high frequency noises.

[0042] In some embodiments, specifically, the recess 120 is a groove.

[0043] In this embodiment, there are no restrictions on the depth and shape of the recess 120, as long as it can remove part of the structure of the main body 110. Specifically, the recess 120 is set as a groove with a regular shape and a definite depth, which can ensure that the structure of the limiter 100 is simple, easy to produce, and convenient for realizing the mass production of the limiter 100. Specifically, the groove can be, for example, Figure 2 and Figure 3 the kidney-shaped groove shown, and the kidney-shaped groove can extend along the length direction of the main body 110. The groove can also be a groove of any shape such as a trapezoidal groove, a circular groove, a square groove, a rhombic groove, etc., as long as the limiter 100 can reduce the target frequency noise.

[0044] In some embodiments, specifically, as shown in Figure 4 and Figure 5 the groove is a through groove.

[0045] In this embodiment, the groove is specifically set as a through groove, that is, it can extend along the surface of the main body 110 and penetrate the main body 110. When the reduction amplitude of the mass of the main body 110 is the same, compared with the closed groove, the through groove has a stronger weakening effect on the stiffness of the main body 110, which helps to reduce the modal frequency of the limiter 100, so as to ensure that other frequency noises will not deteriorate.

[0046] In some embodiments, specifically, as shown in Figure 2 and Figure 4 the recess 120 is symmetric about the central axis L of the main body 110.

[0047] In this embodiment, the shape of the recess 120 is specifically limited to be symmetric about the central axis L of the main body 110 (that is, the central axis of the limiter 100), which can ensure the overall symmetry of the limiter 100. On the one hand, this structural design can avoid the reliability and vibration noise problems caused by uneven stress on the left and right parts of the central axis L of the main body 110, which helps to improve the product reliability. On the other hand, this design can make the overall structure of the limiter 100 simple, easy to produce, and convenient for realizing the mass production of the limiter 100.

[0048] In some embodiments, specifically, as shown in Figure 3 and Figure 5 the main body 110 has a limiting surface 1142, the limiting surface 1142 can face the exhaust valve 200, and the recess 120 is arranged to avoid the limiting surface 1142.

[0049] In this embodiment, the exhaust valve 200 specifically includes a valve seat 220 and an exhaust valve plate 230. The exhaust port 210 is arranged on the valve seat 220. The exhaust valve plate 230 is used to open or close the exhaust port 210. The stopper 100 is connected to the exhaust valve 200, and is specifically located on the side of the exhaust valve plate 230 away from the valve seat 220. The part of the surface of the stopper 100 facing the exhaust valve plate 230 can be used as a limit surface 1142. When the cylinder cavity of the compressor is exhausted outward, the exhaust valve plate 230 will be pushed onto the limit surface 1142 of the stopper 100 by the discharged high-pressure gas to limit the opening degree of the exhaust valve plate 230. Therefore, the exhaust valve plate 230 will hit the limit surface 1142 heavily under the action of the high-pressure gas. By arranging the recessed portion 120 in the area of the main body 110 away from the limiting surface 1142, the limiting surface 1142 can be kept flat, and the stress concentration point when the exhaust valve plate 230 hits the limiting surface 1142 can be reduced, so as to avoid rapid fatigue fracture of the exhaust valve plate 230, which helps to ensure the reliable operation of the exhaust valve plate 230 and extend the service life of the exhaust valve plate 230. Specifically, the recessed portion 120 is arranged on the surface of the main body 110 away from the limiting surface 1142. Since the limiting surface 1142 of the main body 110 and the surface away from the limiting surface 1142 have a large area, the recessed portion 120 can be conveniently arranged, thereby improving the flexibility of the arrangement scheme. And as Figure 2 and Figure 4 As shown, with the central axis L of the main body 110 as a reference, the surface spans the left and right sides of the main body 110 , so that the recessed portion 120 can be symmetrical about the central axis L of the main body 110 .

[0050] In some embodiments, specifically, Figure 1 and Figure 2 As shown, the body 110 has a first side and a second side that are separated from each other, the exhaust valve 200 can be connected to the first side of the body 110, the body 110 includes a mounting portion 112 and a bending portion 114, the mounting portion 112 can be connected to the exhaust valve 200, the bending portion 114 is connected to the mounting portion 112, and the bending portion 114 is bent toward the second side of the body 110. The recessed portion 120 is located on the surface of the mounting portion 112 and / or the bending portion 114.

[0051] In this embodiment, the body part 110 is specifically defined to include a connected mounting part 112 and a bent part 114. The mounting part 112 can realize the connection with the exhaust valve 200, specifically by connecting with the exhaust valve plate 230 and the valve seat 220 at the same time. At this time, the mounting part 112 can be a flat structure to be tightly connected with the exhaust valve 200. The bent part 114 is bent relative to the mounting part 112, specifically by bending toward the second side where the exhaust valve 200 is not provided, corresponding to the exhaust port 210 and located above the exhaust port 210. The wedge-shaped space formed between the bent part 114 and the valve seat 220 is the moving range of the exhaust valve plate 230. The bent part 114 can limit the upper limit of the moving position of the exhaust valve plate 230 to limit the opening degree of the exhaust valve plate 230. That is, the surface of the bent part 114 facing the second side of the body part 110 constitutes the limiting surface 1142. One end of the mounting part 112 far from the bent part 114 is the mounting end of the body part 110, and one end of the bent part 114 far from the mounting part 112 is the free end of the body part 110. By arranging the recessed part 120 on the surface of the mounting part 112, it can be fully ensured that the recessed part 120 is arranged close to the mounting end of the body part 110, so as to significantly reduce its stiffness while slightly reducing the mass of the body part 110. Thus, when the overall thickness of the limiter 100 is increased and its stiffness is significantly improved, the modal frequency of the limiter 100 can drop, so that the vibration response of the limiter 100 can be reduced, and at the same time, other frequency noises will not deteriorate, and the medium and high frequency noises can be significantly reduced. The recessed part 120 can also be arranged on the surface of the bent part 114 to enrich the setting scheme of the recessed part 120 and meet different actual structural requirements. It can be understood that to ensure that the recessed part 120 is arranged close to the mounting end of the body part 110, when the recessed part 120 is arranged on the surface of the bent part 114, it should be arranged as close to the mounting part 112 as possible. In addition, the recessed part 120 can also be located on the surfaces of both the mounting part 112 and the bent part 114 to further enrich the setting scheme of the recessed part 120.

[0052] Specifically, the number of the recessed parts 120 can be at least one for flexible setting. When the number of the recessed parts 120 is at least two, the shapes of the respective recessed parts 120 can be exactly the same to simplify the structure, or can be not completely the same, that is, can be partially the same or can be all different, so as to set the recessed parts 120 according to the actual structure and improve the design accuracy. Among them, for the case where the recessed part 120 is located on the surface of the mounting part 112, that is, all the recessed parts 120 are arranged on the surface of the mounting part 112. For the case where the recessed part 120 is located on the surface of the bent part 114, that is, all the recessed parts 120 are arranged on the surface of the bent part 114. For the case where the recessed part 120 is located on the surfaces of both the mounting part 112 and the bent part 114, it can be as Figure 2As shown, a recess 120 straddles the surfaces of the mounting portion 112 and the bending portion 114 at the same time. On the one hand, it can provide sufficient space to set the recess 120. On the other hand, at the connection position of the mounting portion 112 and the bending portion 114, the bending amplitude of the body portion 110 is relatively large. Setting the recess 120 here has a stronger weakening effect on the stiffness of the body portion 110, and the size and depth of the recess 120 can be reduced, that is, the amount of removal of the structure of the body portion 110 is reduced, so as to improve the effect of reducing the modal frequency of the stopper 100. It can also be that the number of recesses 120 is at least two, and the recesses 120 are evenly distributed on the surfaces of the mounting portion 112 and the bending portion 114, or both of these situations may exist. The above are all implementation manners of the present invention and fall within the protection scope of the present invention.

[0053] In some embodiments, specifically, as Figures 2 to 4 shown, the stopper 100 further includes: a vent 130, and the vent 130 penetrates through the bending portion 114 along the thickness direction of the bending portion 114.

[0054] In this embodiment, the stopper 100 further includes a vent 130. The high-pressure gas discharged from the exhaust port 210 of the exhaust valve 200 can pass through the vent 130 to weaken the impact of the high-pressure gas on the stopper 100. That is to say, the vent 130 can balance the air pressure on both sides of the stopper 100 and prevent the structure of the stopper 100 from being damaged due to unequal air pressure on both sides of the stopper 100.

[0055] It should be noted that, as Figure 2 shown, the width of the part of the bending portion 114 where the vent 130 is provided is greater than the width of other parts.

[0056] As Figure 1 shown, the embodiment of the second aspect of the present invention provides an exhaust assembly 1, which includes the stopper 100 provided in any of the above embodiments, and thus has all the beneficial effects of the stopper 100, which will not be elaborated here.

[0057] Further, the exhaust valve 200 includes a valve seat 220 and an exhaust valve flap 230. The valve seat 220 is provided with an exhaust port 210; the exhaust valve flap 230 is connected to the valve seat 220 and can cover the exhaust port 210, and the stopper 100 is connected to the side of the exhaust valve flap 230 facing away from the valve seat 220. Specifically, the mounting portion 112 of the stopper 100 is connected to the exhaust valve flap 230 and the valve seat 220. The bent portion 114 is bent and inclined away from the exhaust valve flap 230. The exhaust valve flap 230 can control the air pressure balance in the cylinder, thereby ensuring the normal operation of the compressor. Under the action of the high-pressure gas in the cylinder, the exhaust valve flap 230 will reciprocate between the stopper 100 and the valve seat 220 to open or close the exhaust port 210.

[0058] Further, the mounting portion 112 of the stopper 100 is further provided with an assembly port 1122. At the position corresponding to the assembly port 1122 on the exhaust valve 200, there is an installation port. The exhaust assembly 1 further includes a fastener 300. The fastener 300 passes through the assembly port 1122 and the installation port to connect the stopper 100 and the exhaust valve 200, thereby realizing the reliable connection between the stopper 100 and the exhaust valve 200. Specifically, the fastener 300 is a screwed part, a riveted part, etc. When the fastener 300 is a screw, correspondingly, threads are provided on the inner walls of the assembly port 1122 and the installation port, so that the screw can be firmly connected to the stopper 100 and the exhaust valve 200 through the threads.

[0059] An embodiment of the third aspect of the present invention provides a compressor, including the exhaust assembly 1 provided in any of the above embodiments, and thus has all the beneficial effects of the exhaust assembly 1, which will not be elaborated here.

[0060] Specifically, the exhaust valve 200 is connected to the bearing 4. The valve seat 220 of the exhaust valve 200 can be integrally formed with the bearing 4, that is, the exhaust port 210 is directly provided on the bearing 4, which helps to simplify the structure, improve the processing efficiency, and can improve the connection strength and connection tightness between the bearing 4 and the exhaust valve 200, avoiding the leakage of high-pressure gas from the connection between the bearing 4 and the exhaust valve 200, and helping to ensure the reliable operation of the compressor. Taking a rotary compressor as an example, the rotary compressor has an upper bearing and a lower bearing. The upper bearing and the lower bearing seal the cylinder cavity. The exhaust valve 200 can be provided on at least one of the upper bearing and the lower bearing to achieve different exhaust schemes. That is, the exhaust valve 200 includes three setting methods. One is that the number of exhaust valves 200 is two, and the two exhaust valves 200 are respectively provided on the upper bearing and the lower bearing. One is that the exhaust valve 200 is provided on the upper bearing, and the other is that the exhaust valve 200 is provided on the lower bearing.

[0061] An embodiment of the fourth aspect of the present invention provides a refrigeration system, including the compressor provided in any of the above embodiments, and thus has all the beneficial effects of the compressor, which will not be elaborated here.

[0062] Specifically, the refrigeration system includes a compressor, a condenser, a throttling device, and an evaporator. Specifically, the refrigerant is compressed into a high-temperature and high-pressure gaseous refrigerant in the compressor. The high-temperature and high-pressure gaseous refrigerant is discharged from the compressor through the exhaust port 210 on the housing of the compressor, and then enters the condenser to condense and release heat. The high-temperature and high-pressure gaseous refrigerant gradually turns into a high-pressure liquid refrigerant. The high-pressure liquid refrigerant flows out of the condenser and then enters the throttling device to be throttled to reduce the temperature and pressure. The high-pressure liquid refrigerant turns into a low-temperature and low-pressure gas-liquid mixed refrigerant. Then, the low-temperature and low-pressure refrigerant flows out of the throttling device and enters the evaporator to absorb the heat in the surrounding environment and continuously evaporate, turning into a low-pressure gaseous refrigerant. The low-pressure gaseous refrigerant flows out of the evaporator and then re-enters the compressor through the intake port of the compressor for compression. In this way, the refrigeration system can continuously operate, thereby cooling the air.

[0063] In the description of this specification, terms such as "connection", "installation", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0064] In the description of this specification, the description of terms such as "one embodiment", "some embodiments", "specific embodiments", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or instance. Moreover, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0065] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A limiter for an exhaust assembly, characterized in that, The limiter includes: A body part, the body part has an installation end and a free end facing away from each other, and the installation end of the body part can be connected to the exhaust valve of the exhaust assembly; and A recessed part, the recessed part is located on the surface of the body part, and the distance between the recessed part and the installation end of the body part is less than the distance between the recessed part and the free end of the body part; The recessed part is used to remove part of the structure of the body part to reduce the mass of the body part and weaken the stiffness of the body part; The body part has a first side and a second side facing away from each other, the exhaust valve can be connected to the first side of the body part, and the body part includes: An installation part, the installation part can be connected to the exhaust valve; and A bending part, the bending part is connected to the installation part, and the bending part bends towards the second side of the body part; The number of the recessed parts is at least two, and the recessed parts are distributed on the surfaces of the installation part and the bending part; When the recessed part is arranged on the surface of the bending part, it is arranged close to the installation part; The limiter further includes: A vent hole, the vent hole penetrates through the bending part along the thickness direction of the bending part.

2. The limiter according to claim 1, wherein The recessed part is a groove.

3. The limiter according to claim 2, wherein The groove is a through groove.

4. The limiter according to claim 1, wherein The recessed part is symmetric about the central axis of the body part.

5. The limiter according to claim 1, wherein The body part has a limiting surface, the limiting surface can face the exhaust valve, and the recessed part is arranged to avoid the limiting surface.

6. An exhaust assembly, characterized in that, Including: An exhaust valve; And The limiter according to any one of claims 1 to 5.

7. A compressor, characterized in that, Including: A bearing; And The exhaust assembly according to claim 6, the exhaust valve is connected to the bearing.

8. A refrigeration system, characterized in that, Including: The compressor according to claim 7.

Images