Static scroll assembly and scroll compressor

Abstract

The present disclosure provides a static scroll assembly and scroll compressor. The static scroll assembly comprises a static scroll, a reed and a reed retainer, the static scroll is provided with a through hole for discharging compressed gas, the reed has an open state and a closed state based on the air pressure of the through hole, the reed retainer forms a limit position of the reed in the open state, the reed retainer is configured with a mistake-proof structure and the static scroll is configured with a mistake-proof matching structure, the reed retainer is assembled on the static scroll via the mistake-proof structure and the mistake-proof matching structure, the reed is arranged between the reed retainer and the static scroll, the reed retainer has a central axis, and the mistake-proof structure itself is asymmetric relative to the central axis. The present disclosure prevents the mistake of the reed retainer on the static scroll in a cost-effective manner.

Description

Technical Field

[0001] This disclosure relates to the field of compressor technology, and in particular to a static scroll assembly and a scroll compressor. Background Technology

[0002] This section aims to provide background information relevant to understanding the various techniques described herein. As the title of this section implies, this is a discussion of related techniques that should in no way imply that they are necessarily prior art. Therefore, it should be understood that any statement in this section should be read in this context, rather than as an admission of any prior art.

[0003] The working principle of a scroll compressor is to utilize the relative revolution of moving and stationary scroll plates (or rotating and stationary scroll plates) to create a continuous change in a closed volume, thereby compressing gas. The main shaft of the scroll compressor drives the moving scroll plate, which forms a sealed working chamber with the stationary scroll plate, thus sequentially completing the intake, compression, and exhaust processes. Due to its advantages of high efficiency, energy saving, low noise, and high reliability, scroll compressors can be well applied in air conditioning and refrigeration, air compression, gas processing, chemical industry, nitrogen and oxygen production, fluid transportation, and other application fields or occasions.

[0004] During exhaust, the pressure difference causes the reed to open under pressure, allowing compressed gas to be discharged through the orifice. During intake or compression, the reed returns to its original position due to back pressure, closing the orifice. In this sense, the reed can also be understood as a check valve. It should also be understood that the opening and closing motion of the reed is mainly formed by the opening and closing motion of the reed head, but it is not excluded that the reed body may also have a slight opening and closing stroke. Utility Model Content

[0005] Depending on the specifics, the purpose of this disclosure is to prevent the reed retainer from being misinstalled on the stationary scroll plate in a cost-effective manner.

[0006] Furthermore, the purpose of this disclosure is to solve or at least alleviate one or more problems existing in the prior art.

[0007] This disclosure addresses the aforementioned problems by providing a static scroll assembly and a scroll compressor. Specifically, according to one aspect of this disclosure, the following is provided: A scroll compressor has a stationary scroll assembly, wherein the stationary scroll assembly includes a stationary scroll, a reed, and a reed retainer. The stationary scroll has a through-hole for discharging compressed gas. The reed has an open state and a closed state based on the gas pressure of the through-hole. The reed retainer limits the reed in the open state. The reed retainer is configured with a mis-proof structure, and the stationary scroll is configured with a mis-proof matching structure. The reed retainer is mounted on the stationary scroll via the mis-proof structure and the mis-proof matching structure. The reed is arranged between the reed retainer and the stationary scroll. The reed retainer has a central axis, and the mis-proof structure itself is asymmetrical with respect to the central axis.

[0008] Optionally, according to one embodiment of this disclosure, there are multiple error-proofing structures, at least two of which are asymmetrical with respect to the central axis, or at least one of which is itself asymmetrical with respect to the central axis.

[0009] Optionally, according to one embodiment of this disclosure, the error-proofing matching structure is configured as a bump, and the error-proofing structure is configured as an opening.

[0010] Optionally, according to one embodiment of this disclosure, the end face of the stationary vortex disk is provided with a groove, the through hole is opened at the bottom of the groove, the spring is arranged in the groove, and the spring retainer is at least partially arranged in the groove.

[0011] Optionally, according to one embodiment of the present disclosure, the groove has a receiving portion that is deeper than the bottom of the groove, the receiving portion being arranged between the through hole and the anti-misalignment matching structure, and the spring at least partially covering the receiving portion.

[0012] Optionally, according to one embodiment of the present disclosure, the reed retainer is divided into a main body and a limiting part that is bent relative to the main body in a direction away from the through hole. The error prevention structure is disposed on the main body, and the main body is flush with the end face of the stationary volute. In the open state, the reed is limited by the limiting part.

[0013] Optionally, according to one embodiment of this disclosure, the error-proofing structure is constructed as a circular hole, and the two error-proofing structures are asymmetrical with respect to the central axis.

[0014] Alternatively, according to one embodiment of the present disclosure, the sidewall of the groove is constructed with a recessed arc portion.

[0015] Optionally, according to one embodiment of the present disclosure, the groove includes a base and an extension extending from the base, the through hole is formed in the base, the error-proof matching structure is formed in the extension, the base is arc-shaped, and the extension is waist-shaped.

[0016] According to another aspect of this disclosure, this disclosure provides a scroll compressor, wherein the scroll compressor includes any of the above-described stationary scroll assembly. Attached Figure Description

[0017] Referring to the accompanying drawings, the above and other features of this disclosure will become apparent, wherein, Figure 1 A perspective view of a stationary vortex disk assembly according to the present disclosure is shown; Figure 2 A cross-sectional view of a stationary vortex disk assembly according to the present disclosure is shown; Figure 3 A perspective view of a reed retainer according to the present disclosure is shown; Figure 4 A perspective view of a stationary vortex disk according to the present disclosure is shown; Figure 5 A top view of a reed retainer according to the present disclosure is shown. Detailed Implementation

[0018] It is readily understood that, based on the technical solutions of this disclosure, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this disclosure. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solutions of this disclosure and should not be considered as the entirety of this disclosure or as limitations or restrictions on the technical solutions of this disclosure.

[0019] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this specification are defined relative to the structures shown in the accompanying drawings. These are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive. Furthermore, the terms "first," "second," "third," and similar expressions are used for descriptive and distinguishing purposes only and should not be construed as indicating or implying the relative importance of the corresponding components.

[0020] Figure 1 A perspective view of a stationary vortex disk assembly according to the present disclosure is shown; Figure 2 A cross-sectional view of a stationary vortex disk assembly according to the present disclosure is shown; Figure 3 A perspective view of a reed retainer according to the present disclosure is shown; Figure 4A perspective view of a stationary vortex disk according to the present disclosure is shown; Figure 5 A top view of a reed retainer according to the present disclosure is shown.

[0021] This disclosure relates to a stationary scroll assembly 100 of a scroll compressor, wherein the stationary scroll assembly 100 includes a stationary scroll 1, a reed 2, and a reed retainer 3. The stationary scroll 1 has a through hole 11 for discharging compressed gas. The reed 2 has an open state and a closed state based on the gas pressure of the through hole 11. The reed retainer 3 forms a limit for the reed 2 in the open state. The reed retainer 3 is constructed with a mis-proof structure 31, and the stationary scroll 1 is constructed with a mis-proof matching structure 13. The reed retainer 3 is mounted on the stationary scroll 1 via the mis-proof structure 31 and the mis-proof matching structure 13. The reed 2 is arranged between the reed retainer 3 and the stationary scroll 1. The reed retainer 3 has a central axis L (shown schematically). The mis-proof structure 31 itself is asymmetrical with respect to the central axis L.

[0022] It should be understood that when the gas pressure inside the stationary scroll (e.g., the gas pressure of refrigerant or coolant) is high, it overcomes the spring force of the reed, pushing the reed open and allowing the high-temperature, high-pressure gaseous refrigerant to exit the closed state. When the gas pressure drops, the reed returns to the closed state due to its spring force and blocks the through-hole. During the process of exiting the closed state, the reed comes into contact with the reed retainer, thus being limited; that is, the reed retainer limits the open state or open position of the reed. In this sense, the reed, reed retainer, and stationary scroll can be considered as a type of valve.

[0023] The present disclosure of the stationary scroll assembly incorporates a mis-installation prevention measure, wherein the mis-installation prevention structure itself is asymmetrically configured relative to the central axis of the reed retainer. That is, if the reed retainer is flipped, the mis-installation prevention structure and the mis-installation matching structure cannot cooperate, causing interference between the stationary scroll and the reed retainer, preventing the reed retainer from being properly installed onto the stationary scroll. This method effectively prevents mis-installation, particularly by conveniently and cost-effectively avoiding the reed retainer being incorrectly installed on the stationary scroll (e.g., the reed retainer is installed backwards), as an inverted reed retainer negatively impacts the performance and reliability of the stationary scroll assembly.

[0024] It is also known that the reed can be constructed with a design similar to the error-proof structure so that it can be smoothly and as expected assembled onto the stationary volute.

[0025] The reed retainer's limiting of the reed's open state allows for precise control of compressed gas discharge. Those skilled in the art can adjust the position of the reed retainer and the reed's elastic coefficient according to actual needs to achieve the required flow control and pressure threshold. Furthermore, the error-proofing structure and its matching structure, as fixing components, not only provide fixation but also error prevention. Therefore, without adding extra parts, it fully utilizes existing resources to improve assembly reliability, resulting in high economic efficiency.

[0026] This disclosure does not specifically limit the number of error-proofing structures and corresponding error-proofing matching structures. For example, there may be multiple error-proofing structures 31, at least two of which are asymmetrical with respect to the central axis L, or at least one of which is itself asymmetrical with respect to the central axis L.

[0027] Both technical solutions can achieve the anti-misassembly effect described above, and the two methods can be used in combination. The asymmetry can be achieved through different positions or due to shape asymmetry, such as utilizing the difference in the major and minor axes of an ellipse. Furthermore, the number of anti-misassembly structures can be determined based on the effectiveness of fixing the spring retainer.

[0028] For example, the error-proof matching structure 13 is configured as a bump, and the error-proof structure 31 is configured as an opening.

[0029] Therefore, the design of the bump and the opening facilitates shape matching, forming a form-locking connection that improves the stability of the connection. Furthermore, the bump and the opening are easily implemented in part design and mold manufacturing, requiring no additional parts or complex processes, thus keeping costs under control. In addition, the fit between the bump and the opening not only prevents the spring retainer from being installed backwards, but also plays a positioning and guiding role during assembly, guiding the spring retainer to quickly align and assemble onto the stationary scroll, reducing adjustment time during assembly.

[0030] Alternatively, the error prevention structure 31 may be constructed as a circular hole, and the two error prevention structures 31 may be asymmetrical with respect to the central axis L. For example, one error prevention structure may be located away from the central axis to one side, and the other error prevention structure may be located away from the central axis to the other side.

[0031] The cost of round hole machining is controllable and the precision is high. It can also play a good guiding and positioning role during assembly. In addition, the number of error-proof structures is two, which can control the cost of the entire stationary scroll assembly while preventing reverse installation. It can also provide a good fixing effect for the reed retainer. It is a balanced design of fixation, error prevention and cost.

[0032] according to Figure 1It can also be clearly seen that the end face of the static vortex disk 1 is provided with a groove 12, the through hole 11 is opened at the bottom of the groove 12, the spring 2 is arranged in the groove 12, and the spring retainer 3 is at least partially arranged in the groove 12.

[0033] This design improves the compactness of the stationary scroll assembly by utilizing the space on the end face of the scroll to accommodate the reed and reed retainer, thus increasing space utilization. Furthermore, the recessed design enhances the centralization of valve function by accommodating the reed and reed retainer, facilitating centralized management and maintenance. Feasibly, the sidewalls of the recess can mate with the side shapes of the reed and reed retainer, providing guidance and positioning during assembly onto the stationary scroll.

[0034] Furthermore, the groove 12 has a receiving portion 121 that is deeper than the bottom of the groove 12. The receiving portion 121 is arranged between the through hole 11 and the error-proof matching structure 13. The spring 2 at least partially covers the receiving portion 121.

[0035] During the operation of the stationary scroll assembly, the discharge of refrigerant gas may carry particles and other impurities out from inside the stationary scroll. These particles originate from the refrigerant piping. If these particles become trapped between the refrigerant and the stationary scroll, they will affect the position of the refrigerant in the closed state, thus affecting the refrigerant's sealing effect on the through-hole. To avoid this, this technical solution incorporates a containment section that accommodates the particles carried out with the refrigerant gas. This ensures that even if the refrigerant piping is contaminated with particles, the refrigerant can still properly close the through-hole, thereby guaranteeing the normal operation of the stationary scroll assembly.

[0036] The receiving portion can be designed to span the groove, or multiple receiving portions can be provided to increase the particle holding capacity.

[0037] According to one embodiment of the present disclosure, the reed retainer 3 is divided into a main body portion 32 and a limiting portion 33 that is bent relative to the main body portion 32 in a direction away from the through hole 11. The error prevention structure 31 is disposed on the main body portion 32. The main body portion 32 is flush with the end face of the stationary volute 1. In the open state, the reed 2 is limited by the limiting portion 33.

[0038] The design of the main body being flush with the end face of the stationary scroll improves the overall compactness and neatness of the stationary scroll assembly, and also facilitates a stable fit between the error-proof structure and the error-proof matching structure. The bending design of the limiting part not only limits the opening position of the spring, but also prevents the spring from undergoing plastic deformation or fatigue fracture due to excessive bending, thus extending the service life of the spring.

[0039] Alternatively, the sidewall of the groove 12 may be constructed with a recessed arcuate portion 122.

[0040] The arcuate portion can also be understood as an arc-shaped groove. The function of the arcuate portion includes facilitating the processing of the groove (e.g., milling). The position of the arcuate portion can, for example, be aligned with the position of the receiving portion, so that the overall cross-section of both presents a waist-shaped hole. It is understood that, depending on the specific processing technology, the shape, number, and position of the arcuate portion can be modified, or the arcuate portion can be omitted.

[0041] Combination Figure 4 It can also be seen that the groove 12 includes a base 123 and an extension 124 extending from the base 123. The through hole 11 is opened in the base 123, and the error-proof matching structure 13 is constructed in the extension 124. The base 123 is arc-shaped, and the extension 124 is waist-shaped.

[0042] The waist-shaped hole can be understood as a rectangle with its vertical sides rounded. This design allows for targeted design of venting and fixing / misalignment functions. For example, the spring is used to close and open the through hole at one end of its base, and is fixed at the other end of the misalignment matching structure, allowing the spring to bounce effectively. The spring retainer can be understood similarly. Furthermore, the receiving portion can be constructed, for example, at the extension.

[0043] This disclosure also relates to a scroll compressor, wherein the scroll compressor includes any of the aforementioned stationary scroll assembly 100. Therefore, the scroll compressor of this disclosure can inherit various embodiments and corresponding technical effects of the stationary scroll assembly, which will not be elaborated further here.

[0044] It should be understood that all the above preferred embodiments are exemplary and not restrictive, and various modifications or variations made by those skilled in the art to the specific embodiments described above under the concept of this disclosure should be within the legal protection scope of this disclosure.

Claims

1. A static scroll assembly (100) of a scroll compressor, characterized in that, The stationary vortex assembly (100) includes a stationary vortex (1), a reed (2), and a reed retainer (3). The stationary vortex (1) has a through hole (11) for discharging compressed gas. The reed (2) has an open state and a closed state based on the gas pressure of the through hole (11). The reed retainer (3) forms a limit for the reed (2) in the open state. The reed retainer (3) is constructed with a fault-proof structure (31), and the stationary vortex (1) is constructed with a fault-proof matching structure (13). The reed retainer (3) is mounted on the stationary vortex (1) via the fault-proof structure (31) and the fault-proof matching structure (13). The reed (2) is arranged between the reed retainer (3) and the stationary vortex (1). The reed retainer (3) has a central axis (L), and the fault-proof structure (31) itself is asymmetrical with respect to the central axis (L).

2. The static vortex disk assembly (100) according to claim 1, characterized in that, There are multiple error prevention structures (31), at least two of which are asymmetrical with respect to the central axis (L), or at least one of which is itself asymmetrical with respect to the central axis (L).

3. The static vortex disk assembly (100) according to claim 1, characterized in that, The error-proof matching structure (13) is constructed as a protrusion, and the error-proof structure (31) is constructed as an opening.

4. The static vortex disk assembly (100) according to claim 1, characterized in that, The end face of the static vortex disk (1) is provided with a groove (12), the through hole (11) is opened at the bottom of the groove (12), the spring (2) is arranged in the groove (12), and the spring retainer (3) is arranged at least partially in the groove (12).

5. The static vortex disk assembly (100) according to claim 4, characterized in that, The groove (12) has a receiving portion (121) that is deeper than the bottom of the groove (12). The receiving portion (121) is arranged between the through hole (11) and the error-proof matching structure (13). The spring (2) at least partially covers the receiving portion (121).

6. The static vortex disk assembly (100) according to claim 1, characterized in that, The reed retainer (3) is divided into a main body (32) and a limiting part (33) that bends relative to the main body (32) in the direction away from the through hole (11). The anti-misoperation structure (31) is provided on the main body (32). The main body (32) is flush with the end face of the stationary volute (1). In the open state, the reed (2) is limited by the limiting part (33).

7. The static vortex disk assembly (100) according to claim 3, characterized in that, The error prevention structure (31) is constructed as a circular hole, and the two error prevention structures (31) are asymmetrical with respect to the central axis (L).

8. The static vortex disk assembly (100) according to claim 4, characterized in that, The sidewall of the groove (12) has a recessed arc portion (122).

9. The static vortex disk assembly (100) according to claim 4, characterized in that, The groove (12) includes a base (123) and an extension (124) extending from the base (123), the through hole (11) is formed in the base (123), the error-proof matching structure (13) is formed in the extension (124), the base (123) is arc-shaped, and the extension (124) is waist-shaped.

10. A scroll compressor, characterized in that, The scroll compressor includes a static scroll assembly (100) according to any one of claims 1 to 9.

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