Exhaust check valve structure and scroll compressor

Abstract

The utility model provides an exhaust check valve structure and a scroll compressor, and the exhaust check valve structure comprises a baffle plate which is arranged above an exhaust port of a fixed scroll plate of the scroll compressor; the gasket is arranged below the baffle, and an elastic assembly is arranged between the gasket and the baffle; the supporting guide column is arranged on the fixed scroll plate, and the baffle and the gasket are arranged on the supporting guide column; and the exhaust check valve plate is arranged between the gasket and the exhaust port, and the exhaust check valve plate can do reciprocating motion in the axial direction of the supporting guide column. According to the exhaust check valve structure and the scroll compressor, the problems that an exhaust check valve plate in an existing scroll compressor is prone to being damaged, and if the thickness of the exhaust check valve plate is increased, noise is increased can be solved.

Description

Technical Field

[0001] The present application relates to the technical field of compressors, and in particular to an exhaust check valve structure and a scroll compressor. Background Art

[0002] When the scroll compressor is shut down, an exhaust check valve is usually installed at the exhaust port of the fixed scroll to prevent the high-pressure refrigerant at the moving scroll from flowing back through the exhaust port of the fixed scroll, causing the moving scroll to reverse and produce abnormal noise.

[0003] When the refrigerant pressure inside the fixed scroll's exhaust port exceeds the exhaust pressure outside the port, the exhaust check valve disc, under the action of the refrigerant, moves upward until it is blocked by the baffle, allowing the gas inside the fixed scroll to be discharged through the exhaust port. When the refrigerant pressure inside the fixed scroll's exhaust port falls below the exhaust pressure outside the port, the exhaust check valve disc, under the action of the refrigerant, moves downward until it rests against the upper end surface of the fixed scroll, sealing the exhaust port and preventing high-pressure refrigerant from entering the compression chamber through the exhaust port. As the compressor continues to operate, the fixed scroll continuously exhausts gas, and the exhaust check valve disc also continuously reciprocates.

[0004] Currently, with air conditioner manufacturers demanding larger scroll compressor displacements, the displacement of mainstream variable-frequency scroll compressors has increased from 96cc to 135cc and even higher, and the required compressor speed has also risen from 130rps to 160rps and even higher. Simultaneously, to meet energy-saving demands and maintain compressor efficiency, the cross-sectional area of ​​the fixed scroll's exhaust port needs to be increased. This increased cross-sectional area makes the exhaust check valve plate more susceptible to damage from collisions during reciprocating motion. Increasing the thickness of the exhaust check valve plate also results in increased noise. Utility Model Content

[0005] In view of this, the purpose of this application is to provide an exhaust check valve structure and a scroll compressor to solve the problem that the exhaust check valve plate in the existing scroll compressor is easily damaged and that increasing the thickness of the exhaust check valve plate will lead to increased noise.

[0006] According to the first aspect of the present invention, an exhaust check valve structure is provided, wherein the exhaust check valve structure includes: a baffle, arranged above the exhaust port of the fixed scroll disk of the scroll compressor; a gasket, arranged below the baffle, and an elastic component is arranged between the gasket and the baffle; a support guide column, arranged on the fixed scroll disk, and the baffle and the gasket are arranged on the support guide column; and an exhaust check valve plate, arranged between the gasket and the exhaust port, and the exhaust check valve plate can reciprocate along the axial direction of the support guide column.

[0007] Preferably, the elastic component is a wave spring.

[0008] Preferably, the elastic component is arranged along the edge of the gasket.

[0009] Preferably, there are a plurality of gaskets, and the gaskets are arranged at intervals below the baffle, and the elastic component is arranged between two adjacent gaskets.

[0010] Preferably, the shape and size of the gasket and the baffle in the vertical projection are the same.

[0011] Preferably, the exhaust check valve plate and the gasket have the same shape and size as their projections in the vertical direction.

[0012] Preferably, the exhaust check valve plate can cover the exhaust port when it moves to the bottom of the support guide column.

[0013] Preferably, the support guide pillar is cylindrical in shape, and a through hole is axially provided in the middle of the support guide pillar.

[0014] Preferably, there are multiple support guide pillars, and the multiple support guide pillars are arranged around the outer periphery of the exhaust port.

[0015] According to a second aspect of the present invention, a scroll compressor is provided, wherein the scroll compressor includes the exhaust check valve structure as described above.

[0016] The exhaust check valve structure and scroll compressor of the embodiment of the present invention are characterized by a baffle disposed above the exhaust port of the fixed scroll of the scroll compressor. A gasket is disposed below the baffle, and an elastic component is disposed between the gasket and the baffle. A support guide post is disposed on the fixed scroll, and the baffle and gasket are disposed on the support guide post. The exhaust check valve plate is disposed between the gasket and the exhaust port, and the exhaust check valve plate can reciprocate along the axial direction of the support guide post. This arrangement ensures that the exhaust check valve plate does not directly collide with the baffle during its reciprocating motion, but instead first contacts the gasket and compresses the elastic component. The elastic component can act as a buffer, thereby preventing the exhaust check valve plate from being damaged, thereby improving the reliability of the exhaust check valve plate and avoiding increased noise without increasing the thickness of the exhaust check valve plate. This effectively solves the problem that the exhaust check valve plate in the existing scroll compressor is prone to damage, and increasing the thickness of the exhaust check valve plate will lead to increased noise.

[0017] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic diagram of a part of the scroll compressor according to the present invention.

[0020] Figure 2 It is a schematic diagram of a portion of the exhaust check valve structure according to the present utility model.

[0021] Figure numerals: 1-baffle; 2-gasket; 3-support guide column; 4-exhaust check valve plate; 5-wave spring; 6-fixed scroll plate; 60-exhaust port; 7-scroll compressor. DETAILED DESCRIPTION

[0022] The following detailed description is provided to help the reader gain a comprehensive understanding of the methods, devices, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, devices, and / or systems described herein will be apparent upon understanding the disclosure of this application. For example, the order of operations described herein is merely illustrative and is not limited to the order set forth herein. Rather, except for operations that must occur in a particular order, changes may be made that will be apparent upon understanding the disclosure of this application. Furthermore, descriptions of features known in the art may be omitted for clarity and brevity.

[0023] The features described herein may be implemented in different forms and should not be construed as being limited to the examples described herein. Rather, the examples described herein have been provided merely to illustrate some of the many possible ways to implement the methods, devices, and / or systems described herein that will be apparent upon understanding the disclosure of this application.

[0024] Throughout the specification, when an element (such as a layer, region, or substrate) is described as being “on,” “connected to,” “coupled to,” “over,” or “overlaying” another element, it may be directly “on,” “connected to,” “coupled to,” “over,” or “overlaying” another element, or one or more other elements may be present between them. In contrast, when an element is described as being “directly on,” “directly connected to,” “directly coupled to,” “directly over,” or “directly covering” another element, there may be no other elements intervening therebetween.

[0025] As used herein, the term "and / or" includes any one of the associated listed items and any combination of any two or more items.

[0026] Although terms such as "first," "second," and "third" may be used herein to describe various members, components, regions, layers, or portions, these members, components, regions, layers, or portions are not limited by these terms. Rather, these terms are used only to distinguish one member, component, region, layer, or portion from another member, component, region, layer, or portion. Thus, a first member, component, region, layer, or portion in the examples described herein may also be referred to as a second member, component, region, layer, or portion without departing from the teachings of the examples.

[0027] For ease of description, spatial relational terms such as "above," "upper," "below," and "lower" may be used herein to describe the relationship of one element to another element as shown in the accompanying drawings. Such spatial relational terms are intended to encompass different orientations of the device in use or operation in addition to the orientations depicted in the accompanying drawings. For example, if the device in the accompanying drawings is turned over, an element described as being "above" or "upper" relative to another element would subsequently be "below" or "lower" relative to the other element. Thus, the term "above" includes both the orientations "above" and "below," depending on the spatial orientation of the device. The device may also be positioned in other ways (e.g., rotated 90 degrees or in other orientations), and the spatial relational terms used herein will be interpreted accordingly.

[0028] The terms used herein are intended to describe various examples only and are not intended to limit the examples. Unless the context clearly indicates otherwise, the singular form is intended to include the plural form. The terms "include," "comprising," and "having" list the presence of stated features, quantities, operations, components, elements, and / or combinations thereof, but do not preclude the presence or addition of one or more other features, quantities, operations, components, elements, and / or combinations thereof.

[0029] Due to manufacturing techniques and / or tolerances, variations in the shapes shown in the drawings may occur. Therefore, the examples described herein are not limited to the specific shapes shown in the drawings but include changes in shapes that occur during manufacturing.

[0030] The features of the examples described herein can be combined in various ways that will be apparent after understanding the disclosure of the present application. In addition, although the examples described herein have various configurations, other configurations are possible as will be apparent after understanding the disclosure of the present application.

[0031] like Figure 1 and Figure 2 As shown, according to a first aspect of the present invention, an exhaust check valve structure is provided, which includes a baffle 1, a gasket 2, a support guide column 3 and an exhaust check valve plate 4.

[0032] In the following description, reference will be made to Figure 1 and Figure 2 The specific structure of the above components of the exhaust check valve structure and the connection relationship of the above components are described in detail.

[0033] like Figure 1 and Figure 2 As shown, in an embodiment, the baffle 1 can be arranged above the exhaust port 60 of the fixed scroll 6 of the scroll compressor 7. The gasket 2 can be arranged below the baffle 1, and an elastic component can be arranged between the gasket 2 and the baffle 1. The support guide 3 can be arranged on the fixed scroll 6, and the baffle 1 and the gasket 2 can be arranged on the support guide 3. The exhaust check valve plate 4 can be arranged between the gasket 2 and the exhaust port 60. The exhaust check valve plate 4 can reciprocate along the axial direction of the support guide 3. This arrangement ensures that the exhaust check valve plate 4 does not directly collide with the baffle 1 during the reciprocating movement, but first contacts the gasket 2 and compresses the elastic component. The elastic component can act as a buffer, thereby preventing the exhaust check valve plate 4 from being damaged by collision, thereby improving the reliability of the exhaust check valve plate 4 and avoiding increasing noise without increasing the thickness of the exhaust check valve plate 4.

[0034] Preferably, Figure 1As shown, in an embodiment, the fixed scroll 6 can be disposed within the housing of the scroll compressor 7. An exhaust port 60 can be provided in the center of the fixed scroll 6. The exhaust port 60 is connected to the upper end surface of the fixed scroll 6, and refrigerant gas can enter and exit the fixed scroll 6 through the exhaust port 60. The exhaust check valve structure can be installed at the upper end of the fixed scroll 6.

[0035] Preferably, Figure 1 and Figure 2 As shown, in the embodiment, the support guide column 3 can be cylindrical in shape, and a through hole is axially opened in the middle of the support guide column 3. Bolts can be installed in the through hole, and the support guide column 3 can be installed on the upper end surface of the fixed scroll 6 by bolts.

[0036] More preferably, there may be multiple support guide posts 3, each of which may be arranged perpendicular to the upper end surface of the fixed scroll 6. Furthermore, the support guide posts 3 may be arranged around the outer periphery of the exhaust port 60. Each of the support guide posts 3 may be inserted through the baffle 1, the gasket 2, and the exhaust check valve plate 4, wherein the baffle 1 may be fixedly mounted on the support guide posts 3. Specifically, the baffle 1 may be clamped and fixed to the top of the support guide posts 3 by a nut. The gasket 2 and the exhaust check valve plate 4 may be able to move axially along the support guide posts 3.

[0037] More preferably, Figure 1 and Figure 2 As shown, in the embodiment, the specific number of the support guide pillars 3 can be two. The two support guide pillars 3 can be respectively arranged on opposite sides of the exhaust port 60 (i.e., the two support guide pillars 3 are symmetrically arranged on both sides of the exhaust port 60) to better provide support and guidance for the baffle 1, gasket 2, and exhaust check valve plate 4. When the exhaust check valve plate 4 moves to the bottom of the support guide pillars 3, the exhaust check valve plate 4 can accurately cover the upper part of the exhaust port 60 to close the exhaust port 60 and prevent high-pressure refrigerant from entering the compression chamber from the exhaust port 60.

[0038] Preferably, Figure 1 and Figure 2 As shown, in an embodiment, the gasket 2 and the baffle 1 can be arranged in alignment in the vertical direction. The shape and size of the projections of the gasket 2 and the baffle 1 in the vertical direction can be the same. An elastic component for absorbing kinetic energy is provided between the gasket 2 and the baffle 1, and the gasket 2 can be connected to the baffle 1 through the elastic component. In addition, the shape and size of the projections of the exhaust check valve plate 4 and the gasket 2 in the vertical direction can be the same, so that the gasket 2 can better contact with the exhaust check valve plate 4 to uniformly provide buffering for the exhaust check valve plate 4. The specific shape of the exhaust check valve plate 4 can be determined according to actual needs, and can be circular or triangular, etc., as long as it can cover the exhaust port 60.

[0039] Preferably, Figure 1 and Figure 2 As shown, in the embodiment, the elastic component can be a wave spring 5. Part of the upper surface of the wave spring 5 can be welded to the lower surface of the baffle 1, and part of the lower surface of the wave spring 5 can be welded to the upper surface of the gasket 2, thereby connecting the gasket 2 and the baffle 1 and enabling the baffle 1 to compress the wave spring 5. However, this is not limited to this, and the configuration of the elastic component as a wave spring 5 is only a preferred embodiment. As long as the buffering function of the elastic component can be achieved, the elastic component can also be configured in other configurations, for example, the elastic component can be configured as a coil spring.

[0040] Furthermore, preferably, in an embodiment, the elastic component can be arranged along the edge of the gasket 2, that is, the wave spring 5 can be arranged at the edge of the gasket 2. Specifically, when the gasket 2 is triangular in shape, the wave spring 5 can be triangular in shape, so that the wave spring 5 is arranged at the three sides of the gasket 2. When the gasket 2 is circular in shape, the wave spring 5 can be circular and arranged along the circumference of the gasket 2.

[0041] Furthermore, in an embodiment, the number of gaskets 2 can be preferably multiple. Multiple gaskets 2 can be arranged in parallel and spaced apart below the baffle 1. An elastic component for absorbing kinetic energy can be provided between two adjacent gaskets 2 and between the topmost gasket 2 and the baffle 1. This arrangement can further enhance the cushioning effect on the exhaust check valve disc 4, preventing damage to the exhaust check valve disc 4 due to collisions.

[0042] In addition, if Figure 1 As shown, according to a second aspect of the present invention, a scroll compressor 7 is provided, and the scroll compressor 7 includes the exhaust check valve structure as described above.

[0043] During operation, when the refrigerant pressure within the exhaust port 60 of the fixed scroll 6 exceeds the exhaust pressure outside the exhaust port 60, the exhaust check valve disc 4, under the action of the refrigerant, moves upward until it is blocked by the gasket 2. At this point, the gasket 2 compresses the elastic component, absorbing the kinetic energy of the exhaust check valve disc 4, allowing the gas within the fixed scroll 6 to be discharged through the exhaust port 60. When the refrigerant pressure within the exhaust port 60 of the fixed scroll 6 falls below the exhaust pressure outside the exhaust port 60, the exhaust check valve disc 4, under the action of the refrigerant, moves downward until it abuts against the upper end surface of the fixed scroll 6, thereby sealing the exhaust port 60 and preventing high-pressure refrigerant from entering the compression chamber through the exhaust port 60. This arrangement prevents damage to the exhaust check valve disc 4 due to collisions, improving the reliability of the exhaust check valve disc 4 without increasing its thickness and preventing increased noise.

[0044] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present application, which are used to illustrate the technical solutions of the present application, rather than to limit them. The scope of protection of the present application is not limited thereto. Although the present application has been described in detail with reference to the above-described embodiments, those skilled in the art should understand that any person skilled in the art can modify or easily conceive of changes to the technical solutions described in the above-described embodiments within the technical scope disclosed in the present application, or perform equivalent replacements for some of the technical features thereof. These modifications, changes, or replacements do not deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application shall be subject to the scope of protection of the claims.

Claims

1. An exhaust check valve structure, provided in a scroll compressor, characterized in that: The exhaust check valve structure includes: a baffle, disposed above the exhaust port of the fixed scroll of the scroll compressor; a gasket, disposed below the baffle, with an elastic component disposed between the gasket and the baffle; a support guide post, disposed on the fixed scroll, the baffle and the gasket being disposed on the support guide post; and The exhaust check valve plate is arranged between the gasket and the exhaust port, and the exhaust check valve plate can reciprocate along the axial direction of the support guide column.

2. The exhaust check valve structure according to claim 1, characterized in that: The elastic component is a wave spring.

3. The exhaust check valve structure according to claim 2, characterized in that: The elastic component is arranged along the edge of the gasket.

4. The exhaust check valve structure according to claim 1, characterized in that: There are multiple gaskets, and the multiple gaskets are arranged at intervals below the baffle. The elastic component is arranged between two adjacent gaskets.

5. The exhaust check valve structure according to claim 1, characterized in that: The shape and size of the gasket and the baffle in the vertical direction are the same.

6. The exhaust check valve structure according to claim 5, characterized in that: The exhaust check valve plate and the gasket have the same shape and size as the projections in the vertical direction.

7. The exhaust check valve structure according to claim 1, characterized in that: The exhaust check valve plate can cover the exhaust port when it moves to the bottom of the support guide column.

8. The exhaust check valve structure according to claim 1, characterized in that: The support guide column is cylindrical in shape, and a through hole is axially arranged in the middle of the support guide column.

9. The exhaust check valve structure according to claim 1, characterized in that: There are multiple support guide pillars, and the multiple support guide pillars are arranged around the outer periphery of the exhaust port.

10. A scroll compressor, characterized in that: The scroll compressor includes the exhaust check valve structure according to any one of claims 1 to 9.

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