Compressor assembly, air conditioner

Abstract

This invention provides a compressor assembly and an air conditioner. The compressor assembly includes: a compressor with a housing and a gas-liquid separator with an outer shell. The housing and the outer shell are projected onto a first projection plane to form a first circle and a second circle, respectively. It also includes: a fixed bracket connected between the housing and the outer shell, with a first connection point and a second connection point to the outer shell, and a third connection point and a fourth connection point to the housing. The first circle and the second circle have a first internal common tangent and a second internal common tangent. The first internal common tangent is tangent to the first circle and the second circle at the fourth connection point and the first connection point, respectively, and the second internal common tangent is tangent to the first circle and the second circle at the third connection point and the second connection point, respectively. The inter-structure interaction of this invention disrupts the structural modes of the gas-liquid separator and the compressor housing, reducing resonance and minimizing the reflection of acoustic energy from the housing and the gas-liquid separator, thereby reducing compressor assembly vibration and noise.

Description

Technical Field

[0001] This invention belongs to the field of air conditioning technology, specifically relating to a compressor assembly and an air conditioner. Background Technology

[0002] The air conditioning and refrigeration industry is highly competitive. On one hand, people demand high-quality air conditioners; on the other hand, they enjoy comfortable air conditioning. Comfort in air conditioning not only requires high efficiency during operation but also maximizing noise reduction to meet customer needs. Furthermore, while replacing current materials with cheaper alternatives can lower manufacturing costs during energy conservation and emission reduction in air conditioning systems, this may also lead to a decrease in material properties such as reduced hardness and rigidity. This can increase vibration and noise at the gas-liquid separator connection point during compressor operation.

[0003] How to more effectively optimize the fixed support structure of the compressor gas-liquid separator to reduce the vibration and noise transmission between the compressor and the gas-liquid separator, and ultimately reduce the noise of the compressor and even the entire air conditioning system, is an urgent problem to be solved. Summary of the Invention

[0004] Therefore, the present invention provides a compressor assembly and an air conditioner that can solve the technical problem in the prior art where the fixed bracket between the gas-liquid separator and the compressor is not set in a reasonable position, resulting in serious vibration and noise transmission between the compressor and the gas-liquid separator, and large vibration and noise during compressor operation.

[0005] To address the aforementioned problems, the present invention provides a compressor assembly, comprising: a compressor having a housing, wherein any plane perpendicular to the central axis of the housing is a first projection plane, and the housing projects onto the first projection plane to form a first circle; and a gas-liquid separator having an outer shell, the central axis of which is parallel to and spaced apart from the central axis of the housing, and the outer shell projects onto the first projection plane to form a second circle. The compressor assembly further comprises:

[0006] A fixed bracket is connected between the housing and the outer shell. The fixed bracket has a first connection point and a second connection point with the outer shell, and a third connection point and a fourth connection point with the housing.

[0007] The first circle and the second circle have a first internal common tangent and a second internal common tangent. The first internal common tangent is tangent to the first circle and the second circle at the fourth connection point and the first connection point, respectively. The second internal common tangent is tangent to the first circle and the second circle at the third connection point and the second connection point, respectively.

[0008] In some implementations...

[0009] The fixed bracket is welded to both the housing and the outer shell.

[0010] In some implementations...

[0011] The fixed bracket is an integral structure, having a first side connecting section, a second side connecting section, and an intermediate connecting section connecting the first end of the first side connecting section and the first end of the second side connecting section. The first side connecting section, the intermediate connecting section, and the second side connecting section are sequentially connected as a whole and are symmetrical about the line connecting the center of the first circle and the center of the second circle. The intermediate connecting section is connected to one of the housing and the outer shell, and the first side connecting section and the second side connecting section are connected to the other of the housing and the outer shell.

[0012] In some implementations...

[0013] The intermediate connecting section has a concave portion that is recessed toward the second end of the first side connecting section along the direction of the line connecting the center of the first circle and the second circle, so that the fixing bracket forms an M shape. The lowest point of the groove of the concave portion coincides with the first intersection point, which is the intersection point of the first internal common tangent and the second internal common tangent.

[0014] In some implementations...

[0015] The fixed bracket is a split structure, comprising a first connecting section and a second connecting section. The first connecting section and the second connecting section are symmetrical about the line connecting the center of the first circle and the center of the second circle. The two ends of the first connecting section are respectively connected to the housing and the outer shell, and the two ends of the second connecting section are respectively connected to the housing and the outer shell.

[0016] In some implementations...

[0017] The radius of the first circle is R, the radius of the second circle is r, and the distance between the centers of the first circle and the second circle is L, where 5mm < LRr < 35mm.

[0018] In some implementations...

[0019] LRr=20mm.

[0020] In some implementations...

[0021] The first circle and the second circle have a first external common tangent and a second external common tangent. The first external common tangent is tangent to the second circle at point m1, and the second external common tangent is tangent to the second circle at point m2. The compressor assembly also includes a pressure plate. The pressure plate has a surrounding segment that matches the second circle. The minor arc between points m1 and m2 is defined as the m1m2 arc segment. The surrounding segment and the m1m2 arc segment are both symmetrical about the line connecting the centers of the first circle and the second circle. The surrounding segment fits into the m1m2 arc segment, and the arc length of the surrounding segment is greater than the arc length of the m1m2 arc segment.

[0022] In some implementations...

[0023] The fixed bracket and the housing are connected by a connection structure, and both ends of the pressure plate are detachably connected to the connection structure.

[0024] The present invention also provides an air conditioner including the compressor assembly described above.

[0025] The compressor assembly and air conditioner provided by this invention have the following beneficial effects:

[0026] The positions of the fixed supports and their connection points in the area between the compressor and the gas-liquid separator have been optimized. Objectively, the connection points of the fixed supports with the compressor and the gas-liquid separator are determined by the inner common tangent of the outer circle of the casing of the two components. It has been verified that the fixed supports that meet the above conditions can change the cavity mode or structural mode, thereby breaking the coupling between the structure and the aforementioned cavity mode and structural mode. Since the four connection points of the fixed supports in this application coincide with the tangent points of the two inner common tangents of the first circle and the second circle, the mutual restraint and influence between the structures breaks the structural mode of the casing of the gas-liquid separator and its compressor, reduces resonance, minimizes the reflection of acoustic energy of the casing and its gas-liquid separator, thereby reducing the vibration and noise generation of the compressor components, and thus reducing the noise of the entire compressor and the corresponding air conditioning refrigeration system. It should be noted that, due to the optimized structural design of the fixed bracket in this application, it can effectively support the compressor and gas-liquid separator and achieve noise reduction and vibration reduction effects with just four connection points, without the need for other redundant designs and material allowances in the prior art, thereby objectively reducing the design cost of the product.

[0027] When 5mm < LRr < 35mm is met, the compressor housing gas-liquid separator modal reinforcement can reduce the structural resonance of the housing gas-liquid separator, reduce the vibration of the gas-liquid separator, reduce compressor noise, and enhance the overall structural stability of the compressor. Attached Figure Description

[0028] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. The drawings described below are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the compressor structure according to an embodiment of the present invention;

[0030] Figure 2 yes Figure 1 A schematic diagram of the connection points between the fixed bracket and the housing and outer shell, based on a simplified geometric model from a top-down perspective.

[0031] Figure 3 This is a schematic diagram of the structure of a fixed bracket in an embodiment of the present invention;

[0032] Figure 4 yes Figure 3 A schematic diagram showing the welded connection between the fixed bracket and the outer casing and housing.

[0033] Figure 5 yes Figure 3 A schematic diagram showing the relative positional relationship between the fixed bracket and the outer casing and housing in another embodiment;

[0034] Figure 6 This is a schematic diagram of another fixed bracket in an embodiment of the present invention;

[0035] Figure 7 yes Figure 6 A schematic diagram showing the relative positions of the fixed brackets, the outer casing, and the housing.

[0036] Figure 8 This is a graph showing the compressor operating frequency and noise level for different LRr values ​​in the embodiments of the present invention.

[0037] Figure 9 This is a graph showing the relationship between LRr and noise level when the compressor operates at a frequency of 86Hz, as described in this embodiment of the invention.

[0038] Figure 10 This is a graph showing the relationship between LRr and noise level when the compressor operates at a frequency of 74Hz, as described in this embodiment of the invention.

[0039] Figure 11 The image shows a comparison curve of the noise levels across the entire frequency band of a compressor using the mounting bracket of the present invention (this application) and a mounting bracket not using the present invention (prior art).

[0040] The attached figures are labeled as follows:

[0041] 1. Compressor; 11. Housing; 2. Gas-liquid separator; 21. Outer shell; 3. Fixed bracket; 31. First side connecting section; 32. Second side connecting section; 33. Middle connecting section; 34. First connecting section; 35. Second connecting section; 41. First connection point; 42. Second connection point; 43. Third connection point; 44. Fourth connection point; 45. First intersection point; 5. Pressure plate. Detailed Implementation

[0042] 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.

[0043] 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.

[0044] For ease of description, spatial relative terms such as "above," "on top of," "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 beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" 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.

[0045] 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.

[0046] See also Figures 1 to 11 As shown, according to an embodiment of the present invention, see details. Figure 1 As shown, a compressor assembly is provided, including: a compressor 1 having a housing 11, with any plane perpendicular to the central axis of the housing 11 serving as a first projection plane (i.e., any radial plane of the housing 11), the housing 11 projecting onto the first projection plane to form a first circle (unindicated in the figure, the projection of the outer circumferential wall of the housing 11); and a gas-liquid separator 2 having a housing 21, the central axis of the housing 21 being parallel to and spaced apart from the central axis of the housing 11, the housing 21 projecting onto the first projection plane to form a second circle (unindicated in the figure, the projection of the outer circumferential wall of the housing 21). The compressor assembly further includes:

[0047] A fixed bracket 3 is connected between the housing 11 and the outer shell 21. The fixed bracket 3 has a first connection point 41 and a second connection point 42 with the outer shell 21, and a third connection point 43 and a fourth connection point 44 with the housing 11. That is, the fixed bracket 3 forms a fixed connection with the housing 11 and the outer shell 21 through the aforementioned first connection point 41, second connection point 42, third connection point 43 and fourth connection point 44.

[0048] See details Figure 2 As shown, the first circle and the second circle have a first internal common tangent L1 and a second internal common tangent L2. The first internal common tangent L1 is tangent to the first circle and the second circle at the fourth connection point 44 and the first connection point 41, respectively. The second internal common tangent L2 is tangent to the first circle and the second circle at the third connection point 43 and the second connection point 42, respectively.

[0049] In this technical solution, the positions of the fixed bracket 3 and its connection points in the area between the compressor 1 and the gas-liquid separator 2 are optimized. Objectively, the connection points of the fixed bracket 3 with the compressor 1 and the gas-liquid separator 2 are determined by the radii of the outer circles of the housing 11 and the housing 21 of the two components through the internal common tangent. It has been verified that the fixed bracket 3 that meets the aforementioned conditions can change the cavity mode or structural mode, thereby breaking the coupling between the structure and the aforementioned cavity mode and structural mode. Since the four connection points of the fixed bracket 3 in this application coincide with the tangent points of the two internal common tangents of the first circle and the second circle, the mutual restraint and influence between the structures breaks the structural mode of the housing 11 of the gas-liquid separator 2 and the compressor 1, reduces resonance, and minimizes the reflection of the acoustic energy of the housing 11 and the gas-liquid separator 2, thereby reducing the vibration and noise generation of the compressor assembly, and thus reducing the noise of the entire compressor and the corresponding air conditioning refrigeration system. It should be noted that, due to the optimized structural design of the fixed bracket 3 in this application, it can effectively support the compressor 1 and the gas-liquid separator 2 and achieve noise reduction and vibration reduction effects by simply describing four connection points, without adopting other redundant designs and material margins in the prior art, thereby objectively reducing the design cost of the product.

[0050] The aforementioned fixed bracket 3 can be connected to the compressor 1 and the gas-liquid separator 2 using existing technologies such as bolting, snap-fit ​​connection, and hinge. However, in a preferred embodiment, the fixed bracket 3 is welded to both the housing 11 and the outer casing 21. See details... Figure 4 As shown, the fixed bracket 3 is reliably connected to the casing 11 of the compressor 1 and the outer shell 21 of the gas-liquid separator 2 at four connection points by welding. It should be noted that welding has advantages over bolting and clamping: 1. Welding results in a stronger modal fit between the two structures than bolting or clamping; a stronger modal fit is more conducive to reducing vibration. 2. For the connection of two objects in this compressor type, bolting and clamping require the design of corresponding structures and consideration of material structure and cost, while welding is simple, direct, and convenient.

[0051] For a specific implementation method, please refer to [link / reference]. Figures 3 to 5 As shown, the fixed bracket 3 is an integral structure, which can be formed by bending a sheet metal strip. See details. Figure 3As shown, the fixed bracket 3 has a first side connecting section 31, a second side connecting section 32, and an intermediate connecting section 33 connecting the first end of the first side connecting section 31 and the first end of the second side connecting section 32. The first side connecting section 31, the intermediate connecting section 33, and the second side connecting section 32 are connected in sequence as a whole and are symmetrical about the center line connecting the first circle and the second circle. The intermediate connecting section 33 is connected to one of the housing 11 and the outer shell 21, and the first side connecting section 31 and the second side connecting section 32 are connected to the other of the housing 11 and the outer shell 21.

[0052] The fixed bracket 3 in this technical solution is an integrated structure. The integrated structure of the fixed bracket 3 facilitates its assembly with the compressor 1 and the gas-liquid separator 2, preventing the phenomenon of difficulty in assembly and positioning caused by a large number of parts.

[0053] See also Figure 3 As shown, in some embodiments, the intermediate connecting segment 33 has a recessed portion (not indicated in the figure) that is recessed toward the second end of the first side connecting segment 31 along the direction of the line connecting the centers of the first circle and the second circle, so that the fixing bracket 3 forms an M-shape, and the groove of the recessed portion (i.e. Figure 3 The lowest point of the left side of the middle connecting segment 33 (where it is recessed to the right at its maximum position) coincides with the first intersection point 45, which is the intersection of the first internal common tangent line L1 and the second internal common tangent line L2.

[0054] In this technical solution, by aligning the lowest point of the groove in the aforementioned concave portion with the first intersection point 45, the fixed bracket 3 can counteract the vibrations caused by the vibrations from both the housing 11 and the gas-liquid separator 2, thereby further enhancing the stability and anti-interference capability of the fixed bracket 3.

[0055] As another specific implementation method, see details. Figure 6 and Figure 7 As shown, in some embodiments, the fixing bracket 3 is a split structure, the fixing bracket 3 includes a first connecting section 34 and a second connecting section 35, the first connecting section 34 and the second connecting section 35 are symmetrical about the line connecting the center of the first circle and the second circle, the two ends of the first connecting section 34 are respectively connected to the housing 11 and the outer shell 21, and the two ends of the second connecting section 35 are respectively connected to the housing 11 and the outer shell 21.

[0056] In this technical solution, the split-structure fixed bracket 3 includes two relatively separate and independently set parts: a first connecting section 34 and a second connecting section 35. The connection points of the two parts with the compressor 1 and the gas-liquid separator 2 are respectively limited by the positions described above. Compared with the integrated structure fixed bracket 3, it can reduce the amount of materials used, thereby reducing the corresponding manufacturing cost.

[0057] See details Figure 7 As shown, in a specific embodiment, the aforementioned first connecting segment 34 and second connecting segment 35 are arc-shaped segments mirrored each other. Each arc-shaped segment is stably fitted with the housing 11 of the compressor 1 and the outer shell 21 of the gas-liquid separator 2 through the arc surface, which can meet the fixing requirements for stability and vibration reduction of the gas-liquid separator 2 while reducing the amount of material used in the fixing bracket 3.

[0058] It is understandable that the two ends of the aforementioned first connecting segment 34 and second connecting segment 35 respectively form an opening structure that is adapted to the radius of the first circle and the second circle.

[0059] See details Figure 2 As shown, the aforementioned first connection point 41, second connection point 42, third connection point 43 and fourth connection point 44 form an isosceles trapezoid. That is, the main structure of the aforementioned fixed bracket 3 will be confined within the area enclosed by the aforementioned isosceles trapezoid. Defined as follows: the radius of the first circle is R, the radius of the second circle is r, and the distance between the centers of the first circle and the second circle is L, where 5mm < LRr < 35mm.

[0060] In this technical solution, the range of LRr is optimized. Experimental verification shows that the fixed bracket 3 has superior vibration reduction and stability. See details... Figure 8 As shown, when the gas-liquid separator 2 is close to the casing 11 of the compressor 1, the gas-liquid separator 2 is significantly affected by the vibration of the compressor casing itself. Figure 8 The noise level curve corresponds to LRr=3mm. Therefore, the experiment found that 5mm<LRr, at which point the vibration of the gas-liquid separator 2 from the compressor housing is significantly reduced; at the same time, when the gas-liquid separator 2 is far away from the compressor housing, it is more affected by the turbulent motion of the internal fluid during compressor operation, such as... Figure 8 In the case of LRr=50mm, it was found through experiments that if LRr<35mm is satisfied, vibration and noise can be reduced by controlling the turbulent flow distance of the fluid. When 5mm<LRr<35mm is satisfied, the gas-liquid separator 2 of the compressor housing is modally enhanced, which can reduce the structural resonance of the gas-liquid separator 2, reduce the vibration of the gas-liquid separator 2, reduce the noise of the compressor 1, and enhance the overall structural stability of the compressor 1.

[0061] The aforementioned isosceles trapezoid has an upper base, a lower base, and two legs connecting the upper and lower bases. The length of the upper base is S1, the length of the lower base is S2, and the height of the trapezoid is H. Then the following relationship holds:

[0062] H=L- S1= S2= .

[0063] Further integration Figure 9 and Figure 10 The figure shows the compressor operating at two different frequencies ( Figure 9 The frequency is 86Hz. Figure 10 (The frequency is 74Hz), and the vibration reduction and noise reduction effect is optimal when LRr=20mm.

[0064] In some embodiments, the first circle and the second circle have a first external common tangent L3 and a second external common tangent L4. The first external common tangent L3 is tangent to the second circle at point m1, and the second external common tangent L4 is tangent to the second circle at point m2. The compressor assembly further includes a pressure plate 5, which has a surrounding segment that matches the second circle. The minor arc between points m1 and m2 is defined as the m1m2 arc segment. The surrounding segment and the m1m2 arc segment are both symmetrical about the line connecting the centers of the first circle and the second circle. The surrounding segment fits into the m1m2 arc segment, and the arc length of the surrounding segment is greater than the arc length of the m1m2 arc segment.

[0065] In this technical solution, by fitting the surrounding section with the arc segment m1m2 and having the arc length of the surrounding section greater than that of the arc segment m1m2, the constraint capability of the pressure plate 5 on the gas-liquid separator 2 can be improved. While ensuring the stability of the compressor, the material loss of the pressure plate 5 is further reduced, and the noise of the compressor is lowered.

[0066] In some embodiments, a connection structure (not shown in the figure) is formed at the connection position between the fixed bracket 3 and the housing 11, and both ends of the pressure plate 5 are detachably connected to the connection structure. Specifically, the aforementioned connection structure can be formed, for example, in the threaded hole (or through hole) structure of the first connection section 34 and the second connection section 35 near the compressor 1, so that the detachable connection between the pressure plate 5 and the fixed bracket 3 can be achieved by using corresponding connecting screws (not shown in the figure).

[0067] It should be noted that in this technical solution, the pressure plate 5 is connected to the fixed bracket 3 near the housing 11 at both ends. In existing technologies, the pressure plate 5 is usually directly connected to the end of the separator bracket, i.e., the fixed bracket 3, near the gas-liquid separator 2. The gas-liquid separator 2 and the pressure plate 5 are stably connected to the compressor 1 as a whole. In this solution, the pressure plate 5 of the gas-liquid separator 2 is directly connected to the compressor 1. This further stabilizes the interaction between the gas-liquid separator 2 and the inner arc segment of the compressor 1. By fixing the pressure plate 5 to the compressor 1, it also stabilizes the interaction between the gas-liquid separator 2 and the outer arc segment of the compressor 1, further strengthening the fixation of the gas-liquid separator 2 and reducing noise. Figure 2 As shown, the aforementioned outer arc segment refers to the minor arc segment between point m1 and point m2, and the inner arc segment refers to the minor arc segment between the first connecting point 41 and the second connecting point 42.

[0068] It is understandable that the aforementioned fixed bracket 3 may have various structures, but regardless of the structure adopted, its overall mechanical strength should meet the load-bearing requirements of different models of compressors and the gas-liquid separators that are matched with the compressors.

[0069] See details Figure 11 The fixed bracket 3 involved in this invention can significantly reduce the noise level of the compressor during operation.

[0070] According to an embodiment of the present invention, an air conditioner is also provided, including the compressor assembly described above.

[0071] It will be readily understood by those skilled in the art that, without conflict, the advantageous technical features of the above-mentioned methods can be freely combined and superimposed.

[0072] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention. The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the protection scope of the present invention.

Claims

1. A compressor assembly, comprising: A compressor (1), the compressor (1) having a housing (11), any plane perpendicular to the central axis of the housing (11) being a first projection plane, the housing (11) projecting onto the first projection plane to form a first circle; a gas-liquid separator (2), the gas-liquid separator (2) having a shell (21), the central axis of the shell (21) being parallel to and spaced apart from the central axis of the housing (11), the shell (21) projecting onto the first projection plane to form a second circle, characterized in that the compressor assembly further includes: A fixed bracket (3) is connected between the housing (11) and the outer shell (21). The fixed bracket (3) has a first connection point (41) and a second connection point (42) with the outer shell (21), and a third connection point (43) and a fourth connection point (44) with the housing (11). The first circle and the second circle have a first internal common tangent (L1) and a second internal common tangent (L2). The first internal common tangent (L1) is tangent to the first circle and the second circle at the fourth connection point (44) and the first connection point (41), respectively. The second internal common tangent (L2) is tangent to the first circle and the second circle at the third connection point (43) and the second connection point (42), respectively.

2. The compressor assembly according to claim 1, characterized in that, The fixed bracket (3) is welded to the housing (11) and the outer shell (21).

3. The compressor assembly according to claim 1, characterized in that, The fixed bracket (3) is an integral structure. The fixed bracket (3) has a first side connecting section (31), a second side connecting section (32), and an intermediate connecting section (33) connected between the first end of the first side connecting section (31) and the first end of the second side connecting section (32). The first side connecting section (31), the intermediate connecting section (33), and the second side connecting section (32) are connected in sequence as one unit and are symmetrical about the center line connecting the first circle and the second circle. The intermediate connecting section (33) is connected to one of the housing (11) and the outer shell (21). The first side connecting section (31) and the second side connecting section (32) are connected to the other of the housing (11) and the outer shell (21).

4. The compressor assembly according to claim 3, characterized in that, The intermediate connecting segment (33) has a recessed portion that is recessed toward the second end of the first side connecting segment (31) along the direction of the center line connecting the first circle and the second circle, so that the fixed bracket (3) forms an M shape. The lowest point of the recessed portion coincides with the first intersection point (45), which is the intersection of the first internal common tangent (L1) and the second internal common tangent (L2).

5. The compressor assembly according to claim 1, characterized in that, The fixed bracket (3) is a split structure. The fixed bracket (3) includes a first connecting section (34) and a second connecting section (35). The first connecting section (34) and the second connecting section (35) are symmetrical about the line connecting the center of the first circle and the second circle. The two ends of the first connecting section (34) are respectively connected to the housing (11) and the outer shell (21). The two ends of the second connecting section (35) are respectively connected to the housing (11) and the outer shell (21).

6. The compressor assembly according to any one of claims 1 to 5, characterized in that, The radius of the first circle is R, the radius of the second circle is r, and the distance between the centers of the first circle and the second circle is L, where 5mm < LRr < 35mm.

7. The compressor assembly according to claim 6, characterized in that, LRr=20mm.

8. The compressor assembly according to claim 1, characterized in that, The first circle and the second circle have a first external common tangent (L3) and a second external common tangent (L4). The first external common tangent (L3) is tangent to the second circle at point m1, and the second external common tangent (L4) is tangent to the second circle at point m2. The compressor assembly also includes a pressure plate (5). The pressure plate (5) has a surrounding segment that matches the second circle. The minor arc between points m1 and m2 is defined as the m1m2 arc segment. The surrounding segment and the m1m2 arc segment are both symmetrical about the line connecting the centers of the first circle and the second circle. The surrounding segment fits into the m1m2 arc segment, and the arc length of the surrounding segment is greater than the arc length of the m1m2 arc segment.

9. The compressor assembly according to claim 8, characterized in that, The fixed bracket (3) and the housing (11) are connected by a connection structure, and both ends of the pressure plate (5) are detachably connected to the connection structure.

10. An air conditioner, characterized in that, The compressor assembly includes any one of claims 1 to 9.

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