WO2024001523A1

WO2024001523A1 - Exhaust valve assembly and scroll compressor comprising same

Info

Publication number: WO2024001523A1
Application number: PCT/CN2023/092704
Authority: WO
Inventors: 黄志刚; 徐天赐; 牟英涛
Original assignee: 上海海立新能源技术有限公司
Priority date: 2022-06-27
Filing date: 2023-05-08
Publication date: 2024-01-04
Also published as: CN115059611A

Abstract

Provided are an exhaust valve assembly and a scroll compressor comprising same. The exhaust valve assembly comprises: an exhaust valve casing (1), comprising a side wall (11) and a hollow chamber (12), wherein the side wall (11) is provided with at least one first exhaust passage (111), a first end (13) of the exhaust valve casing (1) is provided with a gas release passage (15) and partially closes the hollow chamber (12), and a second end (14) can be connected to a compressor static disk; a piston (2), arranged in the hollow chamber (12) of the exhaust valve casing (1), the shape of the piston (2) being matched with that of the inner wall of the exhaust valve casing (1); an extension and retraction structure (3), arranged in the hollow chamber (12) of the exhaust valve casing (1), two ends of the extension and retraction structure (3) being respectively connected to the first end (13) of the hollow chamber (12) and the piston (2), and extension and retraction of the extension and retraction structure (3) driving the piston (2) to move in an axial direction of the exhaust valve casing (1). The hollow chamber (12) of the exhaust valve casing (1) serves as an exhaust chamber, and the first exhaust passages (111) of the side wall (11) of the exhaust valve casing (1) serve as silencing exhaust holes, thus reducing exhaust noise and exhaust pulsation, and improving the use experience of a user.

Description

Exhaust valve assembly and scroll compressor including same

Technical field

The present invention relates to the field of compressors, and in particular, to an exhaust valve assembly and a scroll compressor including the same.

Background technique

Vehicle scroll compressors generally adopt a horizontal structure. Reed-type exhaust valves have become the first choice for horizontal scroll compressor exhaust valves because of their simple structure and easy and quick closing during shutdown.

Reed exhaust valve includes reeds, baffles, fastening bolts and other components. Different types of compressors use different sizes and shapes of exhaust valves due to their different displacements. If the old model cannot be directly borrowed, it will need to be redesigned and fully inspected, resulting in a longer compressor development cycle. Mismatched reed-type exhaust valves can easily lead to loud exhaust noise during actual use, or even failure such as exhaust valve plate breakage.

The existing optimization work of the reed exhaust valve can only solve the noise problem caused by the flutter of the valve plate during the exhaust process, as well as the exhaust noise problem within a certain speed range. However, with the development of new energy technology, variable frequency compressors with a larger speed range are becoming mainstream demand. This change makes it more difficult to optimize noise throughout the entire speed range.

In addition, with the development of new energy technology, customers have also put forward higher and higher requirements for exhaust pulsation, and the reed-type exhaust valve can easily cause exhaust pulsation and noise changes in under-compression conditions. Big question.

Patent CN114263592A has designed an exhaust valve assembly consisting of a valve plate and a baffle to address the above problems. The valve plate is mainly composed of a fixed part, a moving part and a head. The baffle is mainly composed of a fixed installation section, a transitional connection section and a lift. It consists of limit sections and so on. The longitudinal sections of the transition connection section and the lift limit section are both arc-shaped, with radii of R1 and R2 respectively, and R2>R1. The valve plate is designed to increase stepwise from the fixed part to the head direction. By improving the design of the arc-shaped structure of the valve plate and the width of the baffle, without changing the lift, the oscillation of the valve plate during the lift process is significantly reduced, and the valve plate head rotates at a smoother angle with the crankshaft. , the elastic restoring force of the valve plate after contacting the baffle is maintained, which helps The valve plate is closed in time to improve the noise reduction effect on the existing compressor exhaust noise and improve the compressor performance. Although this patent optimizes the design of the existing reed type exhaust valve, it only improves the noise generated by the oscillation of the reed, and fails to solve the noise generated by the high-pressure refrigerant during the exhaust process. Any improvements to exhaust pulsation.

It should be noted that the information disclosed in the above background section is only used to enhance understanding of the background of the present invention, and therefore may include information that does not constitute prior art known to those of ordinary skill in the art.

Contents of the invention

In view of the problems in the prior art, the object of the present invention is to provide an exhaust valve assembly and a scroll compressor including the same. The exhaust valve assembly is originally a novel piston exhaust valve assembly. The hollow cavity of the valve housing serves as the exhaust chamber, and the exhaust channel on the side wall of the exhaust valve housing serves as a muffler exhaust hole, thereby improving exhaust noise and exhaust pulsation, and improving the user experience.

A first aspect of the invention provides an exhaust valve assembly, including:

The exhaust valve housing includes a side wall and a hollow cavity. The side wall is provided with at least one first exhaust channel. The at least one first exhaust channel connects the hollow cavity and the exhaust valve housing. Outside the body, the first end of the exhaust valve housing is provided with a vent passage and partially closes the hollow cavity, and the second end can be connected to the compressor static plate;

A piston is arranged in the hollow cavity of the exhaust valve housing, and the shape of the piston matches the inner wall of the exhaust valve housing;

A telescopic structure is arranged in the hollow cavity of the exhaust valve housing. The two ends of the telescopic structure are respectively connected to the first end of the hollow cavity and the piston. The telescopic structure drives the piston to move at the desired position. The exhaust valve housing moves in the axial direction.

According to the first aspect of the invention, the exhaust valve assembly further includes:

A guide connecting rod, one end of which is fixed to the first end of the hollow cavity of the exhaust valve housing;

The piston and the telescopic structure are sleeved on the guide connecting rod, and the telescopic structure can telescope along the axial direction of the guide connecting rod, and the piston can telescope along the axial direction of the guide connecting rod. move.

According to a first aspect of the present invention, the exhaust valve assembly further includes a valve seat fixed to the exhaust valve. The inner wall of the second end of the air valve housing is connected to the other end of the guide connecting rod;

The valve seat is provided with at least one second exhaust channel, and the at least one second exhaust channel communicates with the hollow cavity and the outside of the exhaust valve housing.

According to a first aspect of the invention, the valve seat and the side wall are one piece.

According to a first aspect of the present invention, the side wall is provided with a plurality of first exhaust channels, and the plurality of first exhaust channels are evenly distributed along the circumferential direction of the side wall.

According to a first aspect of the present invention, the side wall is provided with a plurality of first exhaust channels, and the plurality of first exhaust channels satisfy:

The radial size of the first exhaust channel is less than or equal to 2mm; and/or

The distance between the first exhaust channels is less than or equal to 1.5 times the radial size of the first exhaust channels.

According to a first aspect of the present invention, the telescopic structure is a spring.

According to a first aspect of the present invention, the piston is provided with a first through hole, which is sleeved on the guide connecting rod through a clearance fit between the first through hole and the guide connecting rod.

According to the first aspect of the present invention, the first end of the exhaust valve housing is provided with a counterbore on one side facing the hollow cavity, and the guide connecting rod and the first end of the exhaust valve housing pass through the The counterbore is connected with an interference fit at one end of the guide connecting rod.

According to a first aspect of the present invention, the side wall at the second end of the exhaust valve housing is provided with threads, and is fixedly connected to the compressor static plate through the threads.

A second aspect of the invention provides a scroll compressor including the exhaust valve assembly.

The invention provides a novel piston exhaust valve assembly, in which the hollow cavity of the exhaust valve housing serves as the exhaust chamber, and the exhaust channel on the side wall of the exhaust valve housing serves as the muffler exhaust hole. Thereby improving the exhaust noise and exhaust pulsation, and improving the user experience; at the same time, the piston exhaust valve assembly can be installed offline, which is more suitable for automated production. The exhaust channel and piston are designed symmetrically, and there is no installation direction requirement; further , compared with traditional reed-type exhaust valves, the exhaust valve assembly and the compressor static plate can be directly connected through threads, with no directionality requirements, high fault tolerance, and reduced manufacturing costs.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate the The embodiments of the application, and together with the description serve to explain the principles of the application, other features, objects and advantages of the invention will become more apparent by reading the detailed description of the non-limiting embodiments with reference to the following drawings. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without exerting creative efforts. Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings represent the same or similar parts, and thus their repeated description will be omitted. Some of the block diagrams shown in the figures are functional entities and do not necessarily correspond to physically or logically separate entities.

Figure 1 is a schematic structural diagram of an exhaust valve assembly according to an embodiment of the present invention;

Figure 2 is a schematic structural diagram of an exhaust valve housing according to an embodiment of the present invention;

Figure 3 is a schematic structural diagram of a piston according to an embodiment of the present invention;

Figure 4 is a schematic structural diagram of a guide link according to an embodiment of the present invention;

Figure 5 is a schematic structural diagram of a valve seat according to an embodiment of the present invention;

FIG. 6 is a state diagram of the exhaust valve assembly during exhaust according to an embodiment of the present invention.

Detailed ways

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in various forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concepts of the example embodiments. To those skilled in the art. The described features, structures or characteristics may be combined in any suitable manner in one or more embodiments.

In this specification, reference to the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like is intended to be in conjunction with the specific features of the embodiment or example represented. , structures, materials or features are included in at least one embodiment or example of this specification. Furthermore, the specific features, structures, materials, or characteristics shown may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and combine the different embodiments or examples represented in this specification and the features of the different embodiments or examples unless they are inconsistent with each other.

Throughout this specification, when a device is said to be "connected" to another device, this includes more than just "direct The situation of "direct connection" also includes the situation of "indirect connection" by placing other elements in between. Terms indicating relative spaces such as "lower" and "upper" may be illustrated in the drawings for easier explanation. The relationship of one device to another device is used. Such terms refer not only to the meaning indicated in the figures, but also to other meanings or operations of the device in use. For example, if a device in the figures is turned over, Devices that are described as "below" other devices are then described as "above" other devices. Therefore, illustrative terms for "below" are all intended to include both above and below. Devices may be rotated 90° or at other angles. Terms representing relative space are also interpreted accordingly.

Although in some instances the terms first, second, etc. are used herein to refer to various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, the first interface and the second interface are represented. Furthermore, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context indicates otherwise. It should be further understood that the terms "comprising" and "including" indicate the presence of stated features, steps, operations, elements, components, items, categories, and/or groups, but do not exclude one or more other features, steps, operations, The presence, occurrence, or addition of elements, components, items, categories, and/or groups. The terms "or" and "and/or" as used herein are to be construed as inclusive or to mean any one or any combination. Therefore, "A, B or C" or "A, B and/or C" means "any of the following: A; B; C; A and B; A and C; B and C; A, B and C" . Exceptions to this definition occur only when the combination of elements, functions, steps, or operations is inherently mutually exclusive in some manner.

Although not differently defined, all terms including technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this specification belongs. Terms defined in commonly used dictionaries are additionally interpreted to have meanings that are consistent with the content of relevant technical documents and current prompts. As long as they are not defined, they shall not be overly interpreted to have ideal or very formulaic meanings.

In order to solve the problems in the prior art, the present invention provides a piston exhaust valve assembly. The exhaust valve assembly includes: an exhaust valve housing, including a side wall and a hollow cavity. The side wall is provided with at least one A first exhaust channel, the at least one first exhaust channel connects the hollow cavity and the outside of the exhaust valve housing, and a vent channel is provided at the first end of the exhaust valve housing and partially closes the hollow The second end of the cavity can be connected to the compressor static plate; the piston is arranged in the hollow cavity of the exhaust valve housing, and the shape of the piston matches the inner wall of the exhaust valve housing; telescopic structure, set Placed in the hollow cavity of the exhaust valve housing, the two ends of the telescopic structure are respectively connected to the first end of the hollow cavity and the piston. The telescopic structure drives the piston to rotate in the exhaust valve. Movement of the valve housing in the axial direction.

The structure and use method of the exhaust valve assembly of the present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that each specific embodiment does not limit the scope of the present invention.

Figure 1 is a schematic structural diagram of an exhaust valve assembly according to an embodiment of the present invention. It can be seen that the exhaust valve assembly includes an exhaust valve housing 1, a piston 2, a telescopic structure 3, a guide connecting rod 4 and a valve seat 5.

Figure 2 is a schematic structural diagram of an exhaust valve housing according to an embodiment of the present invention. Specifically, the exhaust valve housing 1 includes a side wall 11 and a hollow cavity 12. The side wall 1 is provided with a plurality of first rows. Air passage 111. The first exhaust passage 111 connects the hollow cavity 12 with the outside of the exhaust valve housing 1. The first end 13 of the exhaust valve housing 1 is provided with a vent passage 15 and a partial The hollow cavity 12 is closed, and the second end 14 can be connected to the compressor static plate; the exhaust valve housing 1 can be cylindrical, that is, the side wall 11 and the first end 13 form a cylindrical shape. Correspondingly, the hollow cavity 12 Also cylindrical. Preferably, the axis of the cylindrical side wall 11 can coincide with the axis of the cylindrical hollow cavity 12. The present invention does not impose restrictions on the shapes of the exhaust valve housing 1 and the hollow cavity 12. They can be shaped according to the characteristics of the compressor. The specific structure is determined.

FIG. 3 is a schematic structural diagram of the piston in the embodiment of FIG. 2 . The piston 2 is arranged in the hollow cavity 12 of the exhaust valve housing 1 . The telescopic structure 3 is arranged in the hollow cavity 12 of the exhaust valve housing 1. The two ends of the telescopic structure 3 are respectively connected to the first end 13 of the hollow cavity 12 and the piston 2. One end of the telescopic structure 3 Fixed with the first end 13, at this time, the telescopic structure 3 telescopically drives the piston 1 to move in the axial direction of the exhaust valve housing (z direction in Figure 1). Since the piston 2 needs to move along the cylindrical axis direction of the hollow cavity 12, the piston 2 The shape matches the inner wall of the exhaust valve housing 1. When the hollow cavity 12 is cylindrical, the piston is a column piston as shown in Figure 2, and the outer diameter of the piston is slightly smaller than the diameter of the hollow cavity 12 ( inner diameter of the exhaust valve housing).

In some embodiments, when the exhaust valve assembly only includes the exhaust valve housing 1, the piston 2 and the telescopic structure 3, to ensure the normal movement of the piston in the housing, the piston needs to have a certain thickness to function as the piston. For the guiding function during movement, the present invention does not limit the thickness of the piston, as long as it plays a certain limiting role. In actual use, the telescopic structure 3 can be a spring, a rubber elastic material, a pipe telescopic device, etc., and any telescopic mechanism that can drive the piston 2 to reciprocate in the hollow cavity 12 can be used in the present invention.

The side wall 11 at the second end 14 of the exhaust valve housing 1 is provided with threads 112. When the exhaust valve assembly is used in a compressor, it can be fixedly connected to the compressor static plate through the threads 112, such as It is fixedly connected to the flange at the static plate. At this time, the thread 112 meshes with the thread of the flange. The exhaust valve housing can also be fixedly connected to the compressor stationary plate flange in an interference fit manner to achieve communication between the hollow cavity 12 of the exhaust valve housing and the compressor exhaust channel. The exhaust valve assembly of the present invention can be installed first and then assembled on the compressor, which simplifies the production process.

In the embodiment of FIG. 1 , the exhaust valve assembly may further include a guide link 4 . Figure 4 is a schematic structural diagram of the guide link of this embodiment. The guide link 4 is a cylindrical polished rod. One end of the guide link 4 is fixed to the first end 13 of the hollow cavity 12 of the exhaust valve housing. , in one embodiment, a counterbore can be provided on the side of the first end 13 of the exhaust valve housing 1 facing the hollow cavity 12, and the guide connecting rod 4 is connected to the exhaust valve housing. The first end 13 is connected with an interference fit to one end of the guide connecting rod 4 through a counterbore. The piston 2 and the telescopic structure 3 are sleeved on the guide connecting rod 4. In some embodiments, a first through hole 21 can be provided in the center of the piston 2. Through the first through hole 21 and The guide connecting rod 4 is sleeved on the guide connecting rod 4 with a clearance fit. Similarly, the telescopic structure 3 can also be clearance-fitted with the guide connecting rod 4 by providing a through hole, so that the telescopic structure 3 can expand and contract along the axial direction of the guide connecting rod 4, and the piston can move along the axial direction of the guide connecting rod 4. The guide link 4 moves in the axial direction. The main function of the guide connecting rod 4 is to limit the radial movement of the telescopic structure and the piston. Its outer diameter is slightly smaller than the through hole of the telescopic structure and the inner diameter of the first through hole of the piston. The guide connecting rod 4 allows the telescopic structure 3 to only move along the guide direction. The connecting rod 4 is compressed and extended in the axial direction to avoid deflection during compression and recovery of the telescopic structure, thereby affecting the movement of the piston in the hollow cavity.

Further, the exhaust valve assembly may also include a valve seat 5. Figure 5 is a structural schematic diagram of the valve seat in the embodiment of Figure 1. The valve seat 5 is fixed to the inner wall of the second end 14 of the exhaust valve housing 1. The seat 5 can be embedded in the exhaust valve housing 1 in an interference fit manner, or can be integrated with the side wall. At the same time, the valve seat 5 is connected to the other end of the guide link 4, that is, the guide link 4 can be further fixed through the valve seat 5. The fixed connection method of the two is not limited, such as through the central through hole of the valve seat. It is connected with an interference fit at the other end of the guide link 4. The valve seat 5 is provided with at least one second exhaust channel 51 , and the at least one second exhaust channel 51 communicates with the hollow cavity 12 and the outside of the exhaust valve housing 1 .

The present invention also provides a scroll compressor including the above exhaust valve assembly. The scroll compressor can be horizontal or vertical. The structure and basic parameters of each component will be further described below through the working principle of the exhaust valve assembly. Figure 6 is a state diagram of the exhaust valve assembly during exhaust according to an embodiment of the present invention. specifically:

When the compressor starts to exhaust, the force exerted by the compressor exhaust pressure on the piston causes the piston to move away from the static plate, and at the same time overcomes the dynamic friction and expansion caused by the contact between the lower end surface of the piston and the inner wall of the exhaust valve housing. The elastic force generated by the compression of the structure and the vent channel set at the first end of the exhaust valve housing connect the inside of the exhaust valve housing and the outside of the exhaust valve housing to ensure that there is no pressure difference on the upper and lower sides of the piston, which is beneficial to When the exhaust valve is working, it reduces the rising resistance of the column piston. When equilibrium is reached, the force exerted by the exhaust pressure on the piston should be equal to the sum of the static friction force between the piston and the exhaust valve housing and the elastic force after the telescopic structure is compressed. In the same way, because the exhaust pressure of the compressor is different under different working conditions, the position of the piston when it is in the equilibrium position is different. In order to ensure that the telescopic structure will not fail when it is compressed to the limit, Therefore, when selecting or designing a telescopic structure, it must be considered that the compression rate of the telescopic structure when the exhaust pressure is maximum is within the allowable range of the telescopic structure used.

When the compressor starts to work, the high-pressure refrigerant gas does work on the piston, causing the piston to rise. Therefore, the plurality of first exhaust channels of the present invention should be arranged on the side wall that can be covered by the rising stroke of the piston. At this time, the compressor The exhaust channel is connected to the main exhaust chamber outside the exhaust valve housing through the second exhaust channel, the hollow cavity and the first exhaust channel on the valve seat in sequence. When exhausting, the refrigerant flows into the hollow cavity from the second exhaust channel, and then flows into the main exhaust chamber from the first exhaust channel to realize exhaust of the refrigerant gas.

Since the high-pressure refrigerant gas flows through the first exhaust channel and the second exhaust channel in sequence during exhaust, However, when the piston moves upward due to the exhaust pressure, ensure that the piston rises far enough to allow the first exhaust channel set at the second end of the side wall principle to communicate with the compressor exhaust channel 1, ensuring that each channel has refrigeration Agent outflow can effectively reduce the noise and exhaust pulsation caused by the exhaust. The present invention can design the first exhaust channel and the second exhaust channel according to the specific structure of the compressor, including the position, number, size, etc. of the exhaust channel. . In some embodiments, the side wall 11 of the exhaust valve assembly may be provided with a plurality of first exhaust channels 111, and the plurality of first exhaust channels 111 are evenly distributed along the circumference of the side wall, Such as circumferential array distribution, etc. Preferably, the radial size of the plurality of first exhaust channels 111 is less than or equal to 2 mm. It should be noted that the "radial size" here refers to the distance between the two farthest points on the cross section of the first exhaust channel. distance, taking the cross-section of the first exhaust channel as a circle as an example, the radial size of the first exhaust channel is the diameter of the first exhaust channel. At this time, preferably, the diameter of the first exhaust channel can be It is 2mm, 1.5mm or 1mm, etc.; in addition, the distance between the first exhaust channels 111 also affects the noise and exhaust pulsation caused by the exhaust to a certain extent. Preferably, the distance between the first exhaust channels 111 The distance between them is less than or equal to 1.5 times the radial size of the first exhaust channel. The cross section of the first exhaust passage is not limited to a circle, and may be in various shapes such as an ellipse or a polygon.

When the exhaust of the compressor stops, the state diagram at this time is shown in Figure 1. The restoring force of the piston is mainly the elastic force accumulated after the telescopic structure is compressed, and its direction is perpendicular to the inward direction of the static plate flange; affected by gravity, the lower end surface of the piston will be in contact with the exhaust The inner wall of the valve housing is in contact and needs to overcome dynamic friction during the rebound process. Therefore, it is necessary to ensure that the elastic force of the telescopic structure is greater than the friction between the piston and the inner wall of the exhaust valve housing. When the piston covers the first exhaust channel or drops below the first exhaust channel, ensure that the telescopic structure is still in a compressed state to ensure that the exhaust channel of the compressor is completely sealed. Since the valve seat is provided with a second exhaust channel, the exhaust channel of the compressor must be sealed, and the contact surface between the piston and the valve seat must have a high flatness to ensure that when the compressor stops working, the second exhaust channel Completely covered by the piston, there is no possibility of backflow of high-pressure refrigerant gas.

The above content is a further detailed description of the present invention in combination with specific preferred embodiments, and it cannot be concluded that the specific implementation of the present invention is limited to these descriptions. It is obvious to those skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, and that the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as illustrative and non-restrictive from any point of view. The scope of the present application is defined by the appended claims rather than the above description, and therefore all changes that fall within the meaning and range of equivalent elements of the claims are intended to be embraced therein. Any reference signs in the claims shall not be construed as limiting the claim in question.

Claims

An exhaust valve assembly, characterized by including:

The exhaust valve housing includes a side wall and a hollow cavity. The side wall is provided with at least one first exhaust channel. The at least one first exhaust channel connects the hollow cavity and the exhaust valve housing. Outside the body, the first end of the exhaust valve housing is provided with a vent passage and partially closes the hollow cavity, and the second end can be connected to the compressor static plate;

A piston is arranged in the hollow cavity of the exhaust valve housing, and the shape of the piston matches the inner wall of the exhaust valve housing;

A telescopic structure is arranged in the hollow cavity of the exhaust valve housing. The two ends of the telescopic structure are respectively connected to the first end of the hollow cavity and the piston. The telescopic structure drives the piston to move at the desired position. The exhaust valve housing moves in the axial direction.
The exhaust valve assembly according to claim 1, further comprising:

A guide connecting rod, one end of which is fixed to the first end of the hollow cavity of the exhaust valve housing;

The piston and the telescopic structure are sleeved on the guide connecting rod, and the telescopic structure can telescope along the axial direction of the guide connecting rod, and the piston can telescope along the axial direction of the guide connecting rod. move.
The exhaust valve assembly according to claim 2, further comprising a valve seat fixed to the inner wall of the second end of the exhaust valve housing and connected to the other end of the guide connecting rod;

The valve seat is provided with at least one second exhaust channel, and the at least one second exhaust channel communicates with the hollow cavity and the outside of the exhaust valve housing.
The exhaust valve assembly according to claim 3, wherein the valve seat and the side wall are one piece.
The exhaust valve assembly according to claim 1, wherein the side wall is provided with a plurality of first exhaust channels, and the plurality of first exhaust channels are along the circumferential direction of the side wall. Publish evenly.
The exhaust valve assembly according to claim 1, wherein the side wall is provided with a plurality of first exhaust channels, and the plurality of first exhaust channels satisfy:

The radial size of the first exhaust channel is less than or equal to 2mm; and/or

The distance between the first exhaust channels is less than or equal to 1.5 times the radial size of the first exhaust channels.
The exhaust valve assembly according to claim 1, wherein the telescopic structure is a spring.
The exhaust valve assembly according to claim 2, wherein the piston is provided with a first through hole, and is sleeved on the guide connecting rod through a clearance fit between the first through hole and the guide connecting rod. .
The exhaust valve assembly according to claim 2, characterized in that the first end of the exhaust valve housing is provided with a counterbore on one side facing the hollow cavity, and the guide connecting rod and the exhaust valve The first end of the housing is connected with an interference fit between the counterbore and one end of the guide connecting rod.
The exhaust valve assembly according to claim 1, wherein the side wall at the second end of the exhaust valve housing is provided with threads, and is fixedly connected to the compressor static plate through the threads.
A scroll compressor, characterized by comprising the exhaust valve assembly according to any one of claims 1 to 10.