Air inlet flow control structure of compressor

Abstract

The utility model relates to the technical field of compressors, in particular to a compressor air inlet flow control structure which is arranged for a compressor, and the compressor comprises a shell, a rotating motor and a plurality of guide vanes capable of rotating around the axis of the compressor. The compressor air inlet flow control structure comprises a linkage assembly, a plurality of rotating assemblies and a plurality of transmission assemblies. The linkage assembly is connected to one of the transmission assemblies and serves as a mechanism used for being connected with the rotating motor. The rotating assembly is rotatably arranged on the shell; any one of the rotating assemblies is connected with two of the transmission assemblies, and any one of the transmission assemblies is connected with at least one of the rotating assemblies; the number of the transmission assemblies is the same as that of the guide vanes. Each transmission assembly is correspondingly connected with the corresponding guide vane. According to the multi-connecting-rod type driving structure, the assembling and machining difficulty and cost are reduced, and the cost is further reduced by reducing the occupied space.

Description

TECHNICAL FIELD

[0001] The utility model relates to a compressor technical field, concretely relates to a compressor intake flow control structure. BACKGROUND

[0002] The existing centrifugal compressor uses a guide vane adjusting mechanism to control the refrigerant intake amount, thereby controlling the refrigerating capacity.

[0003] At present, a commonly used guide vane adjusting mechanism has the following principle: a guide vane driving shaft is driven by a motor actuator, the guide vane driving shaft drives a driving ring through a connecting rod, and finally the driving ring drives a driven guide vane driving shaft to rotate the guide vane. This guide vane adjusting mechanism has high cost and large transmission virtual position, and due to the limitation of the connecting rod, the driving ring can only be placed in front of the compressor air inlet, and the size of the air inlet is large, so the diameter of the driving ring is also large, which is not conducive to processing.

[0004] The commonly used guide vane adjusting mechanism also includes a steel wire rope driving mechanism, and the principle is as follows: the guide vane driving shaft and the driving wheel are rotated by the motor actuator, the driving wheel and the driven wheel have a notch, when the driving wheel rotates, the notch drives the positioning cylinder on the steel wire rope to make the steel wire rope pull the other driven wheels to rotate, thereby driving the guide vane to rotate and complete the guide vane opening control movement. Although the steel wire rope driving mechanism has high control precision, the reliability of the steel wire rope is insufficient, and it cannot operate stably for a long time.

[0005] Therefore, how to solve the problems of insufficient reliability and control precision in the prior art has become a research topic of the utility model. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a compressor intake flow control structure.

[0007] To achieve the above purpose, the utility model adopts the following technical scheme:

[0008] A compressor intake flow control structure is provided, which is arranged on a compressor, the compressor comprising a shell, a rotating motor and a plurality of guide vanes rotatable about their own axes; the compressor intake flow control structure comprising a linkage assembly, a plurality of rotating assemblies and a plurality of transmission assemblies;

[0009] The linkage assembly is connected to one of the transmission assemblies and serves as a mechanism for connecting with the rotating motor;

[0010] The rotating assembly is rotatably arranged on the shell; any one of the rotating assemblies is connected with two of the transmission assemblies, and any one of the transmission assemblies is connected with at least one of the rotating assemblies;

[0011] The number of the transmission assemblies is the same as the number of the guide vanes; each of the transmission assemblies is connected with each of the guide vanes.

[0012] In the above scheme, two guide vanes are taken as an example for illustration. When the compressor is running, the rotating motor drives the linkage assembly, the linkage assembly drives the corresponding transmission assembly (referred to as the main transmission assembly), the main transmission assembly drives the corresponding guide vane (referred to as the main guide vane) and the corresponding rotating assembly, the rotating assembly drives the corresponding transmission assembly (referred to as the slave transmission assembly), and the slave transmission assembly drives the corresponding guide vane (referred to as the slave guide vane).

[0013] Through the above arrangement, the movement of each guide vane in the compressor can be realized, and the opening of each guide vane can be adjusted, so as to control the intake amount of the compressor.

[0014] Compared with the traditional steel wire rope driving mechanism and other driving mechanisms, the application provides a multi-link driving structure. The transmission assembly is an actual linkage structure.

[0015] For the above multi-link driving structure, the effects are as follows: on the one hand, only the linkage assembly transmits the power of the rotating motor, the transmission assembly realizes the power transmission between the guide vanes, the overall structure is not complex, the assembly and processing difficulty is reduced, the cost is also reduced, and the operation is stable and reliable; on the other hand, the rotating assembly realizes the transmission between the transmission assemblies, avoids the need to set the transmission assembly to a large size, further reduces the cost, and also reduces the space occupied by the application.

[0016] Here, a specific arrangement is supplemented as follows: the guide vanes, the rotating assemblies and the transmission assemblies are all multiple (such as seven) and equal in number; any one rotating assembly is connected with two transmission assemblies, and any one transmission assembly is connected with two rotating assemblies; each rotating assembly and each transmission assembly enclose a ring structure.

[0017] Further technical solutions, the linkage assembly includes a driving shaft and a shaft coupling connected with each other;

[0018] The driving shaft serves as a component for connecting with the rotating motor;

[0019] The shaft coupling is connected with the corresponding transmission assembly.

[0020] When the compressor is running, the rotating motor drives the driving shaft to rotate, the driving shaft drives the shaft coupling to rotate, the shaft coupling drives the corresponding transmission assembly to rotate, and the transmission assembly drives the corresponding guide vane to rotate.

[0021] The simple and reliable arrangement of the driving shaft and the shaft coupling can improve the transmission continuity and ensure stable operation.

[0022] Further technical solutions, the transmission assembly includes a transmission member, a driving member, an insertion member and a connecting member;

[0023] The transmission member is connected with the corresponding guide vane and can rotate around its own axis; the linkage assembly is connected with the corresponding transmission member;

[0024] The driving member is arranged on the transmission member, and the driving member is provided with a clamping groove;

[0025] At least part of the insert is inserted into the clamping groove;

[0026] The connecting member is connected with the insert and the corresponding rotating assembly.

[0027] For the transmission assembly connected with the linkage assembly, the transmission member is driven by the linkage assembly, the corresponding guide vane is driven by the transmission member, the insert is driven by the driving member, the connecting member is driven by the insert, and the corresponding rotating assembly is driven by the connecting member.

[0028] For the transmission assembly not connected with the linkage assembly, the connecting member is driven by the corresponding rotating assembly, the insert is driven by the connecting member, the driving member is driven by the insert, the transmission member is driven by the driving member, and the corresponding guide vane is driven by the transmission member.

[0029] Through the above arrangement, the movement of each guide vane is realized through a simple structure, and the purpose of adjusting the opening degree of the guide vane is achieved. In addition, although the structure is simple, the matching degree between the structures is high and the matching gap is small, which ensures the continuity, precision and reliability of the transmission and the assembly and adjustment process is relatively convenient.

[0030] Further technical solutions, the transmission member is arranged through the shell; a first gasket is arranged between the transmission member and the shell.

[0031] It should be noted that the guide vane is not arranged through the shell, but is arranged through the transmission member to realize connection with the guide vane. At this time, the transmission member is arranged along the circumference of the shell, avoiding occupying the space along the axial direction of the shell, and achieving the effect of reducing the volume of the inlet component of the compressor.

[0032] Further technical solutions, the connecting member is connected with the corresponding rotating assembly through a connecting pin. Specifically, the connecting member is connected with the rotating member through the connecting pin.

[0033] Further technical solutions, the rotating assembly includes a rotating member and a support member;

[0034] The support member is arranged on the shell;

[0035] The rotating member is connected with the corresponding transmission assembly;

[0036] The rotating member is provided with a through hole for the support member to pass through; the rotating member is sleeved on the support member; and the rotating member can rotate around the axis line of the through hole.

[0037] Optionally, the rotating member is provided with three ends in a triangular structure, the through hole is arranged at one of the ends, and the support member is connected with the two corresponding transmission assemblies and the three ends.

[0038] The rotating member is an intermediate structure between the transmission assemblies, and any one of the transmission assemblies can drive other transmission assemblies connected with the rotating member.

[0039] Through the arrangement of the embodiment, the linkage between the transmission assemblies is realized in a simple and stable structure, and the transmission assemblies can be supported.

[0040] Further, the rotating assembly further comprises a bushing, the bushing is sleeved on the support member and arranged in the through hole.

[0041] The bushing is a prior art and has the functions of wear protection and the like, which is well known to those skilled in the art and will not be described here.

[0042] Further, the rotating assembly further comprises a second gasket and a pressing member, both of which are sleeved on the support member.

[0043] In the extension direction of the through hole, the second gasket is arranged between the rotating member and the support member, and the pressing member is arranged on the side of the rotating member away from the second gasket.

[0044] The pressing member serves as a component for promoting the close contact between the rotating member and the second gasket.

[0045] The connection relationship between the support member and the rotating member is unstable, and the arrangement of the pressing member can improve the connection stability therebetween and avoid separation of the two during operation.

[0046] Further, the rotating assembly, the linkage assembly and the transmission assembly are arranged along the circumference of the housing.

[0047] The rotating assembly, the transmission assembly and the linkage assembly are all arranged along the circumference of the housing, which avoids occupying space in the axial direction of the housing and reduces the volume of the intake component of the compressor.

[0048] As for "first", "second", etc. used herein, it does not mean to particularly indicate the order or sequence, nor to limit the present application. It is only used to distinguish components or operations described by the same technical terms.

[0049] As for "connection" or "positioning" used herein, it can mean that two or more components or devices are in direct physical contact with each other or indirectly in physical contact with each other, or can mean that two or more components or devices operate or act on each other.

[0050] The terms “include,” “including,” and “have” used in this article are all open-ended, meaning they include but are not limited to.

[0051] Unless otherwise specified, the terms used herein generally have their ordinary meaning in the context of the art, the subject matter, and the specific context. Certain terms used to describe this case will be discussed below or elsewhere in this specification to provide additional guidance to those skilled in the art in describing the case.

[0052] The terms “front,” “back,” “up,” “down,” “left,” and “right” used in this article are directional terms. In this case, they are only used to describe the positional relationship between the structures and are not intended to limit the specific direction of the protection scheme or its actual implementation.

[0053] The working principle and advantages of this utility model are as follows: Taking two guide vanes as an example, when the compressor is running, the rotary motor drives the linkage component, the linkage component drives the corresponding transmission component, the main transmission component drives the corresponding guide vane and the corresponding rotating component, the rotating component drives the corresponding transmission component, and the driven transmission component drives the corresponding guide vane. Compared with traditional wire rope drive mechanisms, this application sets up a multi-link drive structure. On the one hand, only the linkage component transmits the power of the rotary motor, and the transmission component realizes the power transmission between the guide vanes. The overall structure is not complicated, reducing assembly and processing difficulty and cost, while ensuring stable and reliable operation. On the other hand, the rotating component realizes the transmission between the transmission components, avoiding the need for the transmission components to be set to a large size, further reducing costs and reducing the space occupied by this application. The transmission component realizes the transmission through a simple structure, thereby realizing the movement of each guide vane and achieving the purpose of adjusting the opening of the guide vane. Although the structure is simple, the degree of cooperation between the structures is high and the cooperation gap is small, ensuring the continuity of transmission, transmission accuracy and operational reliability. The assembly and adjustment process is also relatively convenient. Attached Figure Description

[0054] Figure 1 This is a schematic diagram of the compressor intake flow control structure in use according to an embodiment of the present invention;

[0055] Figure 2 for Figure 1 Top view;

[0056] Figure 3 for Figure 1 A schematic diagram of the structure after decomposition of the middle section;

[0057] Figure 4 for Figure 1 A schematic diagram of a partial structure;

[0058] Figure 5 For Figure 1 Another partial structural schematic view;

[0059] Figure 6 For Figure 5 Enlarged view at A.

[0060] In the above drawings: 1, housing; 2, guide vane; 3, linkage assembly; 31, drive shaft; 32, coupling; 4, rotating assembly; 41, rotating piece; 42, support piece; 43, bushing; 44, second gasket; 45, compression piece; 5, transmission assembly; 51, transmission piece; 52, driving piece; 521, clamping groove; 53, insertion piece; 54, connecting piece; 6, first gasket; 7, connecting pin. DETAILED DESCRIPTION

[0061] The utility model will be further described below in combination with the drawings and embodiments:

[0062] Embodiments: the following will be described in detail by the drawings and the present case is clearly explained, any person skilled in the art can be changed and modified by the technology taught by the present case after understanding the embodiments of the present case, which does not deviate from the spirit and scope of the present case.

[0063] The language in this paper is only for describing specific embodiments, and is not intended to limit the present case. The singular form such as "one", "this", "this", "this" and "the" is also used in this paper, which also includes the plural form.

[0064] Referring to Figures 1-6 A compressor intake flow control structure is provided for a compressor, which includes a housing 1, a rotating motor and a plurality of guide vanes 2 rotatable about their own axes; the compressor intake flow control structure includes a linkage assembly 3, a plurality of rotating assemblies 4 and a plurality of transmission assemblies 5;

[0065] The linkage assembly 3 is connected to one of the transmission assemblies 5 and serves as a mechanism for connecting with the rotating motor;

[0066] The rotating assembly 4 is rotatably provided in the housing 1; any one of the rotating assemblies 4 is connected with two of the transmission assemblies 5, and any one of the transmission assemblies 5 is connected with at least one of the rotating assemblies 4;

[0067] The number of transmission assemblies 5 is the same as the number of guide vanes 2; each transmission assembly 5 is connected with each guide vane 2 respectively.

[0068] Take two guide vanes 2 as an example, when the compressor is running, the rotating motor drives the linkage assembly 3, the linkage assembly 3 drives the corresponding transmission assembly 5 (set as the main transmission assembly), the main transmission assembly 5 drives the corresponding guide vane 2 (set as the main guide vane) and the corresponding rotating assembly 4, the rotating assembly 4 drives the corresponding transmission assembly 5 (set as the slave transmission assembly), and the slave transmission assembly 5 drives the corresponding guide vane 2 (set as the slave guide vane).

[0069] Through the above setting, the movement of each guide vane 2 in the compressor can be realized, and the opening of each guide vane 2 can be adjusted, so that the effect of controlling the intake amount of the compressor is achieved.

[0070] Compared with the traditional steel wire rope driving mechanism and other driving mechanisms, the application sets a multi-link driving structure, wherein the transmission assembly 5 is an actual linkage structure.

[0071] For the above multi-link driving structure, the effects are as follows: on the one hand, only the linkage assembly 3 transmits the power of the rotating motor, the power transmission between the guide vanes 2 is realized by the transmission assembly 5, the overall structure is not complex, the assembly and processing difficulty is reduced, the cost is also reduced, and the operation is stable and reliable; on the other hand, the rotating assembly 4 realizes the transmission between the transmission assemblies 5, avoids the need to set the transmission assembly 5 to a larger size, further reduces the cost, and also reduces the space occupied by the application; in addition, the linkage assembly 3 and the transmission assembly 5 do not need to be placed in front of the compressor air inlet, the size can be flexibly adjusted, and the processing is facilitated.

[0072] It should be emphasized that the application has some similarity with the first guide vane adjusting mechanism in the background art, compared with which, the power transmission steps are reduced and the transmission virtual position is smaller.

[0073] Referring to Figure 2 In addition, a specific setting is added as follows: the guide vanes 2, the rotating assemblies 4 and the transmission assemblies 5 are all multiple (such as seven) and the number is equal; any one rotating assembly 4 is connected with two transmission assemblies 5, and any one transmission assembly 5 is connected with two rotating assemblies 4; each rotating assembly 4 and each transmission assembly 5 form a ring structure.

[0074] Referring to Figure 2 , Figure 4 In this embodiment, the linkage assembly 3 includes a driving shaft 31 and a shaft coupling 32 connected with each other;

[0075] The driving shaft 31 serves as a component for connecting with the rotating motor;

[0076] The shaft coupling 32 is connected with the corresponding transmission assembly 5.

[0077] The embodiment provides a specific arrangement of the linkage assembly 3. When the compressor operates, the rotating motor drives the driving shaft 31 to rotate, the driving shaft 31 drives the coupling 32 to rotate, the coupling 32 drives the corresponding transmission assembly 5 to rotate, and the transmission assembly 5 drives the corresponding guide vane 2 to rotate.

[0078] The coupling 32 is a prior art and is well known to those skilled in the art, and will not be described here.

[0079] The simple and reliable arrangement of the driving shaft 31 and the coupling 32 can improve transmission continuity and ensure stable operation.

[0080] Referring to Figure 3 In the embodiment, the transmission assembly 5 comprises a transmission member 51, a driving member 52, an insertion member 53 and a connecting member 54.

[0081] The transmission member 51 is connected to the corresponding guide vane 2 and can rotate around its own axis; the linkage assembly 3 is connected to the corresponding transmission member 51.

[0082] The driving member 52 is arranged on the transmission member 51, and the driving member 52 is provided with a clamping groove 521.

[0083] At least part of the insertion member 53 is inserted into the clamping groove 521.

[0084] The connecting member 54 is connected to the insertion member 53 and the corresponding rotating assembly 4.

[0085] The embodiment provides a specific arrangement of the transmission assembly 5, which is as follows:

[0086] For the transmission assembly 5 connected to the linkage assembly 3, the transmission member 51 is driven by the linkage assembly 3, the corresponding guide vane 2 and the driving member 52 are driven by the transmission member 51, the insertion member 53 is driven by the driving member 52, the insertion member 53 slides in the corresponding clamping groove 521 to drive the connecting member 54, and the connecting member 54 drives the corresponding rotating assembly 4.

[0087] For the transmission assembly 5 not connected to the linkage assembly 3, the connecting member 54 is driven by the corresponding rotating assembly 4, the insertion member 53 is driven by the connecting member 54, the driving member 52 is driven by the insertion member 53, the transmission member 51 is driven by the driving member 52, and the corresponding guide vane 2 is driven by the transmission member 51.

[0088] Optionally, the transmission member 51 is a transmission rod.

[0089] Optionally, the driving member 52 is a yoke.

[0090] Optionally, the insertion member 53 is a clamping block.

[0091] Optionally, the connecting member 54 is a hinge rod (which can be a hinge rod with adjustable length).

[0092] Through the above setting, the movement of each guide vane 2 is realized through simple structure, so as to achieve the purpose of adjusting the opening of the guide vane 2; in addition, the structure is simple, but the matching degree between the structures is high and the matching gap is small, so as to ensure the transmission continuity, transmission accuracy and operation reliability, and the assembly and adjustment process is also relatively convenient.

[0093] Referring to Figure 3 In the embodiment, the transmission member 51 is arranged through the shell 1; the first gasket 6 is arranged between the transmission member 51 and the shell 1.

[0094] The first gasket 6 is a prior art, which plays a role of sealing, shock absorption and the like, and is well known to those skilled in the art, and will not be described here.

[0095] It should be noted that in the embodiment, the guide vane 2 is not arranged through the shell 1, but is connected with the guide vane 2 by the transmission member 51 arranged through the shell 1, at this time, the transmission member 51 is arranged along the circumferential direction of the shell 1, avoiding occupying the space along the axial direction of the shell 1, so as to achieve the effect of reducing the volume of the intake component of the compressor.

[0096] Referring to Figure 3 In the embodiment, the connecting member 54 is connected with the rotating assembly 4 through the connecting pin 7.

[0097] Specifically, the connecting member 54 is connected with the rotating member 41 through the connecting pin 7.

[0098] The connecting mode through the connecting pin 7 is a prior art, which is well known to those skilled in the art, and will not be described here.

[0099] Referring to Figure 3 , Figure 5 , Figure 6 In the embodiment, the rotating assembly 4 includes the rotating member 41 and the support member 42.

[0100] The support member 42 is arranged on the shell 1.

[0101] The rotating member 41 is connected with the transmission assembly 5.

[0102] The rotating member 41 is provided with a through hole for the support member 42 to pass through; the rotating member 41 is sleeved on the support member 42; and the rotating member 41 can rotate around the axis line of the through hole.

[0103] The rotating member 41 is arranged on the shell 1 through the support member 42. The rotating member 41 can be arranged on the side of the shell 1 (or the side of part of the shell 1, and other similar descriptions can be referred to this description).

[0104] Optionally, the rotating member 41 is provided with three ends in a triangular structure, and the through hole is arranged at one of the ends, and the support member 42 is connected with the two corresponding transmission assemblies 5 and the three ends.

[0105] The rotating member 41 is an intermediate structure between the transmission assemblies 5, and any one of the transmission assemblies 5 can drive the other transmission assemblies 5 connected with the corresponding rotating member 41.

[0106] Through the arrangement of the embodiment, the linkage between the transmission assemblies 5 is realized in a simple and stable structure, and the transmission assemblies 5 can be supported.

[0107] Referring to Figure 6 In the embodiment, the rotating assembly 4 further comprises a bushing 43, which is sleeved on the support member 42 and arranged in the through hole.

[0108] The bushing 43 is a prior art and has the functions of wear protection and the like, which is well known to those skilled in the art and will not be described here.

[0109] Referring to Figure 6 In the embodiment, the rotating assembly 4 further comprises a second gasket 44 and a pressing member 45, which are both sleeved on the support member 42.

[0110] In the extension direction of the through hole, the second gasket 44 is arranged between the rotating member 41 and the support member 42, and the pressing member 45 is arranged on the side of the rotating member 41 away from the second gasket 44.

[0111] The pressing member 45 serves as a component for promoting the close contact between the rotating member 41 and the second gasket 44.

[0112] The arrangement effect of the second gasket 44 is referred to the description of the first gasket 6.

[0113] The connection between the support member 42 and the rotating member 41 is unstable, and the arrangement of the pressing member 45 can improve the connection stability therebetween and avoid separation of the two during operation.

[0114] Optionally, the pressing member 45 is provided as a pressing block clamped with the support member 42.

[0115] Optionally, the pressing member 45 is threadedly connected with the support member 42.

[0116] Referring to Figure 2 In the embodiment, the rotating assembly 4, the linkage assembly 3 and the transmission assembly 5 are arranged along the circumference of the housing 1.

[0117] The embodiment clearly proposes that the rotating assembly 4, the transmission assembly 5 and the linkage assembly 3 are arranged along the circumferential direction of the shell 1, so that the space along the axial direction of the shell 1 is avoided, and the volume of the intake component of the compressor is reduced.

[0118] The above embodiment is only for illustrating the technical concept and characteristics of the utility model, and the purpose is to enable the person skilled in the art to understand the content of the utility model and implement it, and cannot limit the protection scope of the utility model. Any equivalent change or modification according to the spirit and essence of the utility model shall be covered within the protection scope of the utility model.

Claims

1. A compressor intake flow control structure, provided for a compressor comprising a casing (1), a rotary electric machine and a plurality of guide vanes (2) rotatable about their own axes, characterized in that: The compressor intake flow control structure comprises a linkage assembly (3), a plurality of rotating assemblies (4) and a plurality of transmission assemblies (5); The linkage assembly (3) is connected to one of the transmission assemblies (5) and serves as a mechanism for connecting with the rotary motor; The rotating assembly (4) is rotatably arranged in the housing (1); any one of the rotating assemblies (4) is connected with two of the transmission assemblies (5), and any one of the transmission assemblies (5) is connected with at least one of the rotating assemblies (4); The number of the transmission assemblies (5) is the same as the number of the guide vanes (2); each of the transmission assemblies (5) is connected with a corresponding one of the guide vanes (2); The transmission assembly (5) comprises a transmission member (51), a driving member (52), an insertion member (53) and a connecting member (54); The transmission member (51) is connected with a corresponding one of the guide vanes (2) and is rotatable about its own axis; the linkage assembly (3) is connected with a corresponding one of the transmission members (51); The driving member (52) is arranged on the transmission member (51) and is provided with a clamping groove (521) on the driving member (52); At least a part of the insertion member (53) is inserted into the clamping groove (521); The connecting member (54) is connected with the insertion member (53) and a corresponding one of the rotating assemblies (4).

2. The compressor intake flow control structure of claim 1, wherein: The linkage assembly (3) comprises a driving shaft (31) and a shaft coupling (32) connected with each other; The driving shaft (31) serves as a component for connecting with the rotary motor; The shaft coupling (32) is connected with a corresponding one of the transmission assemblies (5).

3. The compressor inlet flow control structure of claim 1, wherein: The transmission member (51) penetrates the housing (1); a first gasket (6) is arranged between the transmission member (51) and the housing (1).

4. The compressor inlet flow control structure of claim 1, wherein: The connecting member (54) and a corresponding one of the rotating assemblies (4) are connected through a connecting pin (7).

5. The compressor inlet flow control structure of claim 1, wherein: The rotating assembly (4) comprises a rotating member (41) and a supporting member (42); The supporting member (42) is arranged on the housing (1); The rotating member (41) is connected with a corresponding one of the connecting members (54); The rotating member (41) is provided with a through hole for the supporting member (42) to penetrate; the rotating member (41) is sleeved on the supporting member (42); the rotating member (41) is rotatable about the axis of the through hole.

6. The compressor inlet flow control structure of claim 5, wherein: The rotating assembly (4) further comprises a bushing (43) which is sleeved on the supporting member (42) and arranged in the through hole.

7. The compressor inlet flow control structure of claim 5, wherein: The rotating assembly (4) further comprises a second gasket (44) and a pressing member (45) which are both sleeved on the supporting member (42); In the extension direction of the through hole, the second gasket (44) is arranged between the rotating member (41) and the supporting member (42), and the pressing member (45) is arranged on the side of the rotating member (41) away from the second gasket (44); The pressing member (45) serves as a component for promoting the close contact between the rotating member (41) and the second gasket (44).

8. The compressor inlet flow control structure of any one of claims 1-7, wherein: The rotating assembly (4), the linkage assembly (3) and the transmission assembly (5) are arranged along the circumference of the housing (1).

9. The compressor inlet flow control structure of any one of claims 1-7, wherein: Each of the transmission assemblies (5) is connected to two of the rotation assemblies (4).

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