Flexible seal structure for floating of a fixed scroll of a scroll compressor

Abstract

The application discloses a flexible sealing structure of a fixed scroll floating of a scroll compressor, and belongs to the technical field of scroll compressor manufacturing technology. The application discloses a flexible sealing structure of a fixed scroll floating of a scroll compressor, and belongs to the technical field of scroll compressor manufacturing technology. The application discloses a flexible sealing structure of a fixed scroll floating of a scroll compressor, and belongs to the technical field of scroll compressor manufacturing technology. The application discloses a flexible sealing structure of a fixed scroll floating of a scroll compressor, and belongs to the technical field of scroll compressor manufacturing technology. The application discloses a flexible sealing structure of a fixed scroll floating of a scroll compressor, and belongs to the technical field of scroll compressor manufacturing technology. The application discloses a flexible sealing structure of a fixed scroll floating of a scroll compressor, and belongs to the technical field of scroll compressor manufacturing technology. The application discloses a flexible sealing structure of a fixed scroll floating of a scroll compressor, and belongs to the technical field of scroll compressor manufacturing technology. The application discloses a flexible sealing structure of a fixed scroll floating of a scroll compressor, and belongs to the technical field of scroll compressor manufacturing technology. The application discloses a flexible sealing structure of a fixed(scroll) floating of a scroll compressor, and belongs to the technical field of scroll compressor manufacturing technology. The present application solves the problems of low compression efficiency and side leakage between the fixed scroll and the moving scroll in the prior art.

Description

Technical Field

[0001] This invention relates to a flexible sealing structure for a scroll compressor with fixed and floating scrolls, and specifically to a flexible sealing structure for a scroll compressor with fixed and floating scrolls. Background Technology

[0002] The scroll compressor is a new type of positive displacement compressor developed in the 1970s. With its high efficiency, small size, light weight, low noise, simple structure and stable operation, it is widely used in various air conditioning and refrigeration units.

[0003] A typical scroll compressor mainly consists of a fixed scroll, a moving scroll, a crankshaft, a motor, and a housing. The fixed and moving scrolls have relatively eccentric scroll teeth that are 180° apart. The fixed scroll is mounted on an upper support to maintain its fixed position. One side of the moving scroll meshes with the fixed scroll, forming a series of crescent-shaped spaces inside. The center of the other side of the moving scroll contacts the crankshaft. The crankshaft rotates under the action of the motor, driving the moving scroll to revolve around the center of the fixed scroll without rotating on its own axis. During this motion, the crescent-shaped spaces gradually move towards the center and continuously shrink, until finally the gas in the crescent-shaped spaces is discharged from the exhaust port of the fixed scroll, completing the compression process.

[0004] Existing floating structures for scroll compressors employ a groove and protrusion mechanism between the stationary scroll and the upper support for axial and circumferential positioning. However, the presence of this floating structure inevitably creates a gap between the contact surfaces of the groove and the protrusion. If the gap is too small, it will affect the normal floating of the stationary scroll; if the gap is too large, the axial displacement of the stationary scroll during compressor operation will exceed the oil film thickness, resulting in lateral leakage and impacting compressor efficiency.

[0005] In view of the problems existing in the prior art, it is necessary to study and design a new type of flexible sealing structure for a scroll compressor with fixed scroll floating, so as to overcome the problems existing in the prior art. Summary of the Invention

[0006] The existing scroll compressors suffer from low compression efficiency and lateral leakage between the stationary and moving scrolls. To address these issues, a flexible sealing structure for a floating stationary scroll in a scroll compressor is provided. This structure effectively limits the axial displacement of the stationary scroll while ensuring its normal floating.

[0007] The technical means employed in this invention are as follows:

[0008] A flexible sealing structure for a scroll compressor with fixed scroll floating includes: a fixed shell structure, a scroll compression structure, and a limiting structure;

[0009] Furthermore, the fixed shell structure includes: a shell and an upper support; the upper support is fixed inside the shell;

[0010] Furthermore, the scroll compression structure includes: a crankshaft, a moving scroll, and a fixed scroll; the fixed scroll and the moving scroll are assembled opposite each other and placed on the upper support, and the crankshaft is installed in the shaft holes of the upper support and the moving scroll.

[0011] Furthermore, the limiting structure includes: a radial limiting structure and a circumferential limiting structure;

[0012] Furthermore, the radial limiting structure includes: a fixed vortex radial limiting structure, an upper support radial limiting structure, a pin, and a wave spring; the fixed vortex radial limiting structure is disposed on the outer ring of the fixed vortex and cooperates with the pin; the wave spring is nested on the outside of the pin and the fixed vortex; the upper support radial limiting structure is disposed on the inner ring of the upper support and cooperates with the wave spring.

[0013] Furthermore, the circumferential limiting structure includes: a fixed vortex circumferential limiting structure and an upper support circumferential limiting structure; the fixed vortex circumferential limiting structure is disposed on the fixed vortex; the upper support circumferential limiting structure is disposed on the upper support, and the fixed vortex circumferential limiting structure and the upper support circumferential limiting structure cooperate with each other.

[0014] Furthermore, the number of radial limiting structures of the fixed vortex is greater than 3 sets, which are evenly distributed on the outer ring of the fixed vortex;

[0015] Furthermore, each set of fixed vortex radial limiting structures consists of two parallel surfaces plus a circular arc concave surface;

[0016] Furthermore, the height of the fixed vortex radial limiting structure is 1 / 2 of the fixed vortex height;

[0017] Furthermore, the arc angle of the fixed vortex radial limiting structure is less than 180°;

[0018] Furthermore, the center of the arc, the center of the arc, and the midpoint of the fixed vortex are collinear in each set of radial limiting structures for the fixed vortex.

[0019] Furthermore, the upper support radial limiting structure is a circular groove, which is set in the inner ring of the upper support;

[0020] Furthermore, the depth of the circular groove is similar to the height of the fixed vortex radial limiting structure.

[0021] Furthermore, the wave spring has a hollow cylindrical structure, which generates a reaction force in the opposite direction when compressed radially;

[0022] Furthermore, the wave spring is installed between the upper support radial limiting structure and the fixed vortex radial limiting structure;

[0023] Furthermore, the wave spring and the upper support radial limiting structure are interference fit, and its inner ring diameter is slightly larger than the outer ring diameter of the fixed vortex.

[0024] Furthermore, the pin is installed between the wave spring and the fixed vortex radial limiting structure;

[0025] Furthermore, the cross-section of the pin consists of two parallel surfaces and two circular arc surfaces;

[0026] Furthermore, the two parallel surfaces of the pin and the two parallel surfaces of the fixed vortex radial limiting structure are in clearance fit, and the surface roughness of the contact surfaces can meet the requirements of relative sliding.

[0027] Furthermore, the diameter of one arc surface of the pin is the same as the inner diameter of the wave spring, and the arc surface and the inner circle of the wave spring are interference fit;

[0028] Furthermore, the radius of the other arc surface of the pin is smaller than the radius of the arc surface of the fixed vortex radial limiting structure, and the two are in line contact.

[0029] Furthermore, the shell, upper support, wave spring, and fixed vortex are all concentric.

[0030] Furthermore, the circumferential limiting structure of the fixed vortex is set on the outside of the fixed vortex, and the circumferential limiting structure of the upper support is set on the inside of the upper support. The two are respectively a groove and a protrusion and cooperate with each other.

[0031] Furthermore, the surface roughness of each contact surface between the fixed vortex circumferential limiting structure and the upper support circumferential limiting structure can meet the requirements for relative sliding.

[0032] Furthermore, the fixed vortex circumferential limiting structure and the upper support circumferential limiting structure are staggered and not on the same vertical plane.

[0033] Compared with the prior art, the present invention has the following advantages:

[0034] The flexible sealing structure for a floating fixed scroll compressor provided by this invention adds an axial limiting structure between the fixed scroll and the upper support, which works in conjunction with the original circumferential limiting structure. Under the premise of ensuring normal floating of the fixed scroll, it can effectively limit the axial displacement of the fixed scroll, thereby reducing lateral leakage between the moving scroll and the fixed scroll.

[0035] In summary, the technical solution of this invention solves the problems of low compression efficiency and lateral leakage between the stationary and moving scrolls in existing scroll compressors.

[0036] Based on the above reasons, this invention can be widely promoted in fields such as scroll compressor manufacturing technology. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0039] Figure 2 For the present invention Figure 1 Top view;

[0040] Figure 3 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0041] Figure 4 This is a schematic diagram of the fixed shell structure A of the present invention;

[0042] Figure 5 This is a schematic diagram of the vortex compression structure B of the present invention;

[0043] Figure 6 This is a schematic diagram of the upper support and fixed vortex cooperation structure of the present invention;

[0044] Figure 7 This is a schematic diagram of the support structure of the present invention;

[0045] Figure 8 This is a schematic diagram of the fixed vortex structure of the present invention;

[0046] Figure 9 This is a schematic diagram of the waveform spring structure of the present invention;

[0047] Figure 10 This is a schematic diagram of the pin structure of the present invention.

[0048] In the picture:

[0049] A. Fixed shell structure;

[0050] B. Vortex compression structure;

[0051] C. Limiting structure C1, radial limiting structure C2, circumferential limiting structure;

[0052] 10. Shell;

[0053] 20. Upper support; 21. Radial limiting structure of upper support; 22. Circumferential limiting structure of upper support;

[0054] 30. Crankshaft;

[0055] 40. Dynamic vortex;

[0056] 50. Wave spring;

[0057] 60. Sell;

[0058] 70. Fixed vortex 71. Fixed vortex radial limiting structure 72. Fixed vortex circumferential limiting structure. Detailed Implementation

[0059] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0060] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0061] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0062] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0063] In the description of this invention, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is generally based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0064] For ease of description, spatial relative terms such as "above," "over," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation besides the orientation of the device as described in the figures. For example, if the device in the figures is inverted, a device described as "above" or "above" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0065] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0066] Example 1

[0067] like Figure 1 , 2As shown, this invention provides a flexible sealing structure for a scroll compressor with a floating fixed scroll, comprising: a fixed housing structure A, a scroll compression structure B, and a limiting structure C. The fixed housing structure A includes a housing 10 and an upper support 20, with the upper support 20 fixed inside the housing 10. The scroll compression structure B includes a crankshaft 30, a moving scroll 40, and a fixed scroll 70. The limiting structure C includes a radial limiting structure C1 and a circumferential limiting structure C2. The radial limiting structure C1 includes a fixed scroll radial limiting structure 71, an upper support radial limiting structure 21, a pin 60, and a wave spring 50. The fixed scroll radial limiting structure 71 is disposed on the outer ring of the fixed scroll 70 and cooperates with the pin 60. The wave spring 50 is nested on the outside of the pin 60 and the fixed scroll 70. The upper support radial limiting structure 21 is disposed on the inner ring of the upper support 20 and cooperates with the wave spring 50. The circumferential limiting structure C2 includes a fixed scroll circumferential limiting structure 72 and an upper support circumferential limiting structure 22. The fixed vortex circumferential limiting structure 72 is set on the fixed vortex 70, and the upper support circumferential limiting structure 22 is set on the upper support 20. The fixed vortex circumferential limiting structure 72 and the upper support circumferential limiting structure 22 cooperate with each other.

[0068] The radial limiting structure 71 of the vortex consists of two parallel surfaces plus a concave arc surface. There are more than three of them, which are evenly distributed on the outer ring of the fixed vortex 70. The height of the radial limiting structure 71 is at least 1 / 2 of the height of the fixed vortex 70. The arc angle of the radial limiting structure 71 should be less than 180°. The center of the arc, the midpoint of the arc and the midpoint of the fixed vortex 70 of each radial limiting structure 71 should be collinear.

[0069] The upper support radial limiting structure 21 is a circular groove located within the inner ring of the upper support 30. The groove depth is similar to the height of the fixed volute radial limiting structure 71. The wave spring 50 is a hollow cylinder that generates a reaction force in the opposite direction when compressed radially. The wave spring 50 is installed between the upper support radial limiting structure 21 and the fixed volute radial limiting structure 71. The wave spring 50 and the upper support radial limiting structure 21 are interference-fitted. The inner ring diameter of the wave spring is slightly larger than the outer ring diameter of the fixed volute 70. The pin 60 is installed between the wave spring 50 and the fixed volute radial limiting structure 71. The cross-section of the pin 60 consists of two parallel surfaces and two arc surfaces. The two parallel surfaces of the pin 60 and the two parallel surfaces of the fixed volute radial limiting structure 71 are clearance-fitted, and the surface roughness of both surfaces meets the requirements for relative sliding. The diameter of one arc surface of the pin 60 is the same as the inner diameter of the wave spring 50. The pin 60 and the inner ring of the wave spring 50 are interference-fitted. The radius of the other arc surface of pin 60 is smaller than the radius of the arc surface of the radial limiting structure 71 of the fixed vortex, and the two are in line contact, with the contact line parallel to the axial center line of the fixed vortex 70. The housing 10, upper support 20, wave spring 50, and fixed vortex 70 are concentric in pairs.

[0070] A circumferential limiting structure 72 for the fixed vortex 70 is disposed on the outer side, and a circumferential limiting structure 22 for the upper support 20 is disposed on the inner side. The two structures are respectively a groove and a protrusion that cooperate with each other. The surface roughness of each contact surface between the circumferential limiting structure 72 for the fixed vortex and the circumferential limiting structure 22 for the upper support is sufficient to meet the requirements for relative sliding. The radial limiting structure C1 and the circumferential limiting structure C2 are staggered and not on the same vertical plane.

[0071] The present invention discloses a flexible sealing structure for a scroll compressor with a fixed scroll floating mechanism. By setting a circumferential limiting structure C2 between the upper support 20 and the fixed scroll 70, the circumferential movement of the fixed scroll 70 during the floating process is restricted. Furthermore, by adding a wave spring 50 and a pin 60 between the upper support 20 and the fixed scroll 70, the radial movement of the fixed scroll 70 is restricted, thereby reducing lateral leakage between the moving scroll 40 and the fixed scroll 70 and improving the compressor's working efficiency.

[0072] Example 2

[0073] like Figure 3 As shown, (based on Embodiment 1) the present invention also provides a flexible sealing structure for a scroll compressor with a floating fixed scroll, characterized by comprising: a fixed housing structure A, a scroll compression structure B, and a limiting structure C. The fixed housing structure A includes a housing 10 and an upper support 20, the upper support 20 being fixed inside the housing 10. The scroll compression structure B includes a crankshaft 30, a moving scroll 40, and a fixed scroll 70. The limiting structure C includes a radial limiting structure C1 and a circumferential limiting structure C2. The radial limiting structure C1 includes a fixed scroll radial limiting structure 71, a pin 60, and a wave spring 50. The fixed scroll radial limiting structure 71 is disposed on the outer ring of the fixed scroll 70 and cooperates with the pin 60. The wave spring 50 is nested on the outside of the pin 60 and the fixed scroll 70 and cooperates with the housing 10. The circumferential limiting structure C2 includes a fixed scroll circumferential limiting structure 72 and an upper support circumferential limiting structure 22. The fixed vortex circumferential limiting structure 72 is set on the fixed vortex 70, and the upper support circumferential limiting structure 22 is set on the upper support 20. The fixed vortex circumferential limiting structure 72 and the upper support circumferential limiting structure 22 cooperate with each other.

[0074] The radial limiting structure 71 of the fixed vortex consists of two parallel surfaces plus a concave arc surface. There are more than three of them, which are evenly distributed on the outer ring of the fixed vortex 70, and their height is at least 1 / 2 of the height of the fixed vortex 70. The arc angle of the radial limiting structure 71 should be less than 180°, and the center of the arc, the midpoint of the arc, and the midpoint of the fixed vortex 70 of each radial limiting structure 71 should be collinear.

[0075] The wave spring 50 is a hollow cylinder, which generates a reaction force in the opposite direction when compressed radially. The wave spring 50 is installed between the housing 10 and the radial limiting structure 71 of the fixed volute. The wave spring 50 and the housing 10 are interference-fitted. The inner diameter of the wave spring is slightly larger than the outer diameter of the fixed volute 70. The pin 60 is installed between the wave spring 50 and the radial limiting structure 71. The cross-section of the pin 60 consists of two parallel surfaces and two arc surfaces. The two parallel surfaces of the pin 60 and the two parallel surfaces of the radial limiting structure 71 are clearance-fitted, and the surface roughness of the contact surfaces meets the requirements for relative sliding. The diameter of one arc surface of the pin 60 is the same as the inner diameter of the wave spring 50. The pin 60 and the inner ring of the wave spring 50 are interference-fitted. The radius of the other arc surface of the pin 60 is smaller than the radius of the arc surface of the radial limiting structure 71, and the two are in line contact, with the contact line parallel to the axial centerline of the fixed volute 70. The shell 10, upper support 20, wave spring 50, and fixed vortex 70 are concentric in pairs.

[0076] A circumferential limiting structure 72 for the fixed vortex 70 is located on the outside of the fixed vortex 70, and a circumferential limiting structure 22 for the upper support 20 is located on the inside of the upper support 20. The two structures are respectively a groove and a protrusion that cooperate with each other. The surface roughness of each contact surface between the circumferential limiting structure 72 for the fixed vortex and the circumferential limiting structure 22 for the upper support is sufficient to meet the requirements for relative sliding. The radial limiting structure C1 and the circumferential limiting structure C2 are staggered and not on the same vertical plane.

[0077] The present invention discloses a flexible sealing structure for a scroll compressor with a fixed scroll floating mechanism. By setting a circumferential limiting structure C2 between the upper support 20 and the fixed scroll 70, the circumferential movement of the fixed scroll 70 during the floating process is restricted. Furthermore, by adding a wave spring 50 and a pin 60 between the housing 10 and the fixed scroll 70, the radial movement of the fixed scroll 70 is restricted, thereby reducing lateral leakage between the moving scroll 40 and the fixed scroll 70 and improving the compressor's working efficiency.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A flexible sealing structure for a scroll compressor with a fixed scroll floating mechanism, characterized in that: The flexible sealing structure of the scroll compressor with fixed scroll floating includes: a fixed shell structure (A), a scroll compression structure (B), and a limiting structure (C); The fixed shell structure (A) includes: a shell (10) and an upper support (20); the upper support (20) is fixed inside the shell (10); The vortex compression structure (B) includes: crankshaft (30), moving vortex (40) and fixed vortex (70); the fixed vortex (70) and the moving vortex (40) are assembled vertically opposite each other and placed on the upper support (20), and the crankshaft (30) is installed vertically in the shaft holes of the upper support (20) and the moving vortex (40); The limiting structure (C) includes: a radial limiting structure (C1) and a circumferential limiting structure (C2); The radial limiting structure (C1) includes: a fixed vortex radial limiting structure (71), an upper support radial limiting structure (21), a pin (60), and a wave spring (50); the fixed vortex radial limiting structure (71) is disposed on the outer ring of the fixed vortex (70) and cooperates with the pin (60); the wave spring (50) is nested on the outside of the pin (60) and the fixed vortex (70); the upper support radial limiting structure (21) is disposed on the inner ring of the upper support (20) and cooperates with the wave spring (50); The circumferential limiting structure (C2) includes: a fixed vortex circumferential limiting structure (72) and an upper support circumferential limiting structure (22); the fixed vortex circumferential limiting structure (72) is disposed on the fixed vortex (70); the upper support circumferential limiting structure (22) is disposed on the upper support (20), and the fixed vortex circumferential limiting structure (72) and the upper support circumferential limiting structure (22) cooperate with each other.

2. The flexible sealing structure for a scroll compressor with fixed scroll floating according to claim 1, characterized in that: The number of the fixed vortex radial limiting structure (71) is greater than 3 sets, and they are evenly distributed on the outer ring of the fixed vortex (70); Each set of fixed vortex radial limiting structures (71) consists of two parallel surfaces plus a circular arc concave surface; The height of the fixed vortex radial limiting structure (71) is 1 / 2 of the height of the fixed vortex (70); The arc angle of the radial limiting structure (71) of the fixed vortex is less than 180°; The center of the arc, the center of the arc, and the midpoint of the fixed vortex (70) of each group of radial limiting structures (71) remain collinear.

3. The flexible sealing structure for a scroll compressor with fixed scroll floating according to claim 1, characterized in that: The upper support radial limiting structure (21) is a circular groove, which is set in the inner ring of the upper support (20); The depth of the circular groove is similar to the height of the fixed vortex radial limiting structure (71).

4. The flexible sealing structure for a scroll compressor with fixed scroll floating according to claim 1, characterized in that: The wave spring (50) is a hollow cylindrical structure, which generates a reaction force in the opposite direction when compressed radially; The wave spring (50) is installed between the upper support radial limiting structure (21) and the fixed vortex radial limiting structure (71); The wave spring (50) and the upper support radial limiting structure (21) are interference fit, and its inner ring diameter is slightly larger than the outer ring diameter of the fixed vortex (70).

5. The flexible sealing structure for a scroll compressor with fixed scroll floating according to claim 1, characterized in that: The pin (60) is installed between the wave spring (50) and the fixed vortex radial limiting structure (71); The cross-section of the pin (60) consists of two parallel surfaces and two circular arc surfaces; The two parallel surfaces of the pin (60) and the two parallel surfaces of the fixed vortex radial limiting structure (71) are in clearance fit, and the roughness of the contact surfaces can meet the requirements of relative sliding. The diameter of one arc surface of the pin (60) is the same as the inner diameter of the wave spring (50), and the arc surface and the inner circle of the wave spring (50) are interference fit; The radius of the other arc surface of the pin (60) is smaller than the radius of the arc surface of the fixed vortex radial limiting structure (71), and the two are in line contact.

6. The flexible sealing structure for a scroll compressor with fixed scroll floating according to claim 1, characterized in that: The shell (10), upper support (20), wave spring (50) and fixed vortex (70) are all concentric.

7. The flexible sealing structure for a scroll compressor with fixed scroll floating according to claim 1, characterized in that: The fixed vortex circumferential limiting structure (72) is set on the outside of the fixed vortex (70), and the upper support circumferential limiting structure (22) is set on the inside of the upper support (20). The two are respectively a groove and a protrusion and cooperate with each other. The surface roughness of each contact surface of the fixed vortex circumferential limiting structure (72) and the upper support circumferential limiting structure (22) can meet the requirements of relative sliding. The fixed vortex circumferential limiting structure (72) and the upper support circumferential limiting structure (22) are staggered and not on the same vertical plane.

Images