A stator housing assembly and compressor assembly

Abstract

The application provides a stator shell assembly and a compressor assembly, the stator shell assembly comprising: a stator and a shell, the stator being located in the interior of the shell, and the outer peripheral wall of the stator being welded with the inner peripheral wall of the shell; the outer peripheral wall of the stator has at least two welding positions in the circumferential direction, including a first welding position and a second welding position; the outer peripheral wall of the shell is further connected with a distributor; and in the projection plane of the axial end surface of the shell, the shell has a shell center, the distributor has a distributor center, and the shell center and the distributor center form a shell-distributor center connecting line; and the connecting line of the center of the first welding position and the center of the second welding position is a first connecting line, and the first connecting line is parallel to the shell-distributor center connecting line. According to the application, the radial vibration of the distributor can be dispersed, the radial vibration of the distributor is reduced to a certain extent, the vibration of the whole compressor assembly is reduced, and the vibration reduction and noise reduction effects are greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of compressors, in particular to a stator shell assembly and a compressor assembly. BACKGROUND

[0002] So far, most compressor manufacturers widely use the stator welded shell process, and the existing way of fixing the stator of the compressor is mainly hot fitting, that is, the compressor shell is heated to expand, and then the stator is fitted into the shell. After the compressor shell cools down, the stator can be fixed inside the shell. However, in this way, the contact surface between the motor and the compressor shell is larger. Therefore, the vibration of the motor is more likely to be transmitted to the shell and then to the compressor. Therefore, reducing the contact surface between the stator and the shell can reduce the transmission of motor vibration and thus reduce the vibration of the compressor.

[0003] There are many reasons for the vibration of the compressor. Among them, the operation of the motor can cause the vibration of the distributor in the radial direction to increase, which can increase the vibration of the compressor.

[0004] Due to the unreasonable installation of the stator in the compressor in the prior art, the vibration generated during operation is large, and other technical problems, therefore, the present application researches and designs a stator shell assembly and a compressor assembly. SUMMARY

[0005] Therefore, the technical problem to be solved by the present application is to overcome the defects of the unreasonable installation of the stator in the compressor in the prior art, which leads to large vibration during operation, thereby providing a stator shell assembly and a compressor assembly.

[0006] In order to solve the above problems, the present application provides a stator shell assembly, which comprises:

[0007] a stator and a shell, the stator is located inside the shell, the outer peripheral wall of the stator is welded with the inner peripheral wall of the shell; the outer peripheral wall of the stator has at least two welding positions in the circumferential direction, including a first welding position and a second welding position; the outer periphery of the shell is also connected with a distributor;

[0008] and in the projection plane of the axial end surface of the shell, the shell has a shell center, the distributor has a distributor center, and the shell center and the distributor center form a shell-distributor center connecting line; and the center line of the first welding position and the center line of the second welding position is a first connecting line, and the first connecting line is parallel to the shell-distributor center connecting line.

[0009] In some embodiments,

[0010] Further included is a flange, which is also arranged in the housing and located at an axial side of the stator, an outer peripheral wall of the flange is welded with the inner wall of the housing, and there is a fourth welding position on the outer peripheral wall of the flange in the circumferential direction;

[0011] In the projection plane of the axial end surface of the housing, the first welding position on the stator and the fourth welding position of the flange are at least partially coincident.

[0012] In some embodiments,

[0013] The outer peripheral wall of the stator further has a third welding position, and in the projection plane of the axial end surface of the housing, the first welding position, the second welding position and the third welding position are sequentially and spaced in the circumferential direction.

[0014] In some embodiments,

[0015] The outer peripheral wall of the stator has a cut edge and a non-cut edge, the cut edge is an outer peripheral wall formed by cutting part of the original outer peripheral wall of the stator towards the radial inner side, the non-cut edge is between two adjacent cut edges, and the first welding position, the second welding position and the third welding position are all arranged on the outer peripheral wall of the non-cut edge.

[0016] In some embodiments,

[0017] In the projection plane of the axial end surface of the housing, the first welding position, the second welding position and the third welding position are uniformly spaced in the circumferential direction, the centers of the first welding position, the second welding position and the third welding position are sequentially connected to form an equilateral triangle, and the central angle of the arc segment on the inner wall of the housing between the center of the first welding position and the center of the second welding position is 120°, the central angle of the arc segment on the inner wall of the housing between the center of the second welding position and the center of the third welding position is 120°, and the central angle of the arc segment on the inner wall of the housing between the center of the third welding position and the center of the first welding position is 120°.

[0018] In some embodiments,

[0019] In the projection plane of the axial end surface of the housing, the first welding position, the second welding position and the third welding position are non-uniformly spaced in the circumferential direction.

[0020] In some embodiments,

[0021] The first welding position extends in an axial direction on the outer peripheral wall of the stator, the second welding position extends in an axial direction on the outer peripheral wall of the stator, the third welding position extends in an axial direction on the outer peripheral wall of the stator, and the sum of the axial length of the first welding position, the axial length of the second welding position, and the axial length of the third welding position is not more than the axial length of the stator.

[0022] In some embodiments,

[0023] The axial length of the first welding position is less than 1 / 3 of the axial length of the stator, the axial length of the second welding position is less than 1 / 3 of the axial length of the stator, and the axial length of the third welding position is less than 1 / 3 of the axial length of the stator.

[0024] In some embodiments,

[0025] The axial one end of the first welding position, the axial one end of the second welding position, and the axial one end of the third welding position are all located on a same first axial plane, the axial other end of the first welding position, the axial other end of the second welding position, and the axial other end of the third welding position are all located on a same second axial plane, the first axial plane is perpendicular to the central axis of the stator, and the second axial plane is perpendicular to the central axis of the stator.

[0026] In some embodiments,

[0027] The axial one end of the first welding position and the same axial one end surface of the stator have a first distance greater than 0, the axial other end of the first welding position and the same axial other end surface of the stator have a second distance greater than 0, and the first distance is equal to the second distance;

[0028] The axial one end of the second welding position and the same axial one end surface of the stator have a third distance greater than 0, the axial other end of the second welding position and the same axial other end surface of the stator have a fourth distance greater than 0, and the third distance is equal to the fourth distance;

[0029] The axial one end of the third welding position and the same axial one end surface of the stator have a fifth distance greater than 0, the axial other end of the third welding position and the same axial other end surface of the stator have a sixth distance greater than 0, and the fifth distance is equal to the sixth distance.

[0030] The present application also provides a compressor assembly comprising the aforementioned stator housing assembly.

[0031] The stator shell assembly and compressor assembly have the following beneficial effects:

[0032] 1. The present application improves the welding position between the stator and the shell, so that the welding and fixing between the stator and the shell can be completed through the multiple welding positions arranged at intervals, which greatly reduces the contact area between the stator and the shell compared with the hot sleeve method in the prior art, thereby effectively reducing the transmission of compressor vibration, and by arranging the center line of the first and second welding positions to be parallel to the center line of the shell distributor, the radial vibration transmission between the compressor and the distributor can be effectively inhibited, the radial vibration transmission of the compressor to the distributor is minimized and inhibited, the radial vibration of the distributor is dispersed, the radial vibration of the distributor is reduced to a certain extent, thereby reducing the vibration of the entire compressor assembly, and the vibration reduction and noise reduction effects are greatly improved.

[0033] 2. The present application also oppositely arranges the first welding position on the stator and the fourth welding position on the flange in the axial direction, so that the stator and the flange have at least one same fixed position in the circumferential direction, so that the vibration transmission and inhibition of the stator to the rotor and the axial transmission and inhibition of the flange to the shaft can at least be consistent, the vibration generated by the rotation of the rotor and the shaft can be further inhibited, the vibration reduction effect and performance of the compressor interior are further improved.

[0034] 3. The present application also improves the fixing effect of the stator by arranging the third welding position, further improves the vibration reduction effect, and the three welding positions are uniformly arranged in the circumferential direction, which can further uniformly distribute the vibration transmission in the circumferential direction, and further improve the vibration reduction and noise reduction effect; the present application preferably arranges the multiple welding positions on the non-cut edge, which can reduce the distance between the stator and the inner wall of the shell, improve the effect of welding and fixing, and the cut edge can reduce the contact area between the stator and the shell, further improve the vibration reduction and noise reduction effect; the present application limits the axial length of the welding position, which can further reduce the contact area between the stator and the shell while ensuring the welding firmness between the stator and the shell, and further reduce the vibration; by arranging the stator welding point (seam) at the central position (axial direction) outside the motor stator, the welding firmness can be further improved. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 is a top view of the stator shell assembly (motor) of the present application;

[0036] Figure 2 is a side sectional internal view of the compressor assembly of the present application.

[0037] The reference signs are as follows:

[0038] 1 stator; 2 housing; 3 first weld location; 4 second weld location; 5 third weld location; 6 distributor; 7 housing center; 8 housing distributor center line; 9 first line; 10 flange; 11 fourth weld location; 12 fifth weld location; 13 sixth weld location; 14 trimmed edge; 15 untrimmed edge. DETAILED DESCRIPTION

[0039] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative in nature and by no means as any limitation to the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without any creative effort fall within the scope of the present application.

[0040] It is to be noted that the terms used herein are only intended to describe specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprise" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components and / or combinations thereof.

[0041] The relative arrangement of the components and steps, numerical expressions, and numerical values set forth in the embodiments are not intended to limit the scope of the present application unless specifically stated otherwise. It should be understood that the dimensions of the various parts shown in the drawings are not drawn to scale for the purpose of convenience of description. The techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered as part of the authorized description when appropriate. In all the examples shown and discussed herein, any specific value should be interpreted as merely exemplary, and not as a limitation. Therefore, other examples of the exemplary embodiments can have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it need not be discussed further in subsequent drawings.

[0042] In the description of the application, it should be understood that the orientation words such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicated orientation or position relationship are generally based on the orientation or position relationship shown in the drawings, only for the convenience of describing the application and simplifying the description, without the opposite description, these orientation words do not indicate and imply that the device or element referred to must have a particular orientation or be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the scope of protection of the application; The orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0043] For the convenience of description, spatial relative terms such as "over", "above", "upper surface", "upper" and the like can be used herein to describe the spatial position relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawing is inverted, the device described as "above" or "over" other devices or structures will be positioned "below" or "under" other devices or structures. Therefore, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative description used herein is interpreted accordingly.

[0044] In addition, it should be noted that the use of "first", "second" and the like to define parts is only for the convenience of distinguishing the corresponding parts, and the above words have no special meaning unless otherwise stated, therefore it cannot be understood as a limitation on the scope of protection of the application.

[0045] As Figures 1-2 shown, the application provides a stator shell assembly, which comprises:

[0046] A stator 1 is located inside a shell 2, and the outer peripheral wall of the stator 1 is welded with the inner peripheral wall of the shell 2; There are at least two welding positions (preferably including first, second and third welding positions) in the circumferential direction of the outer peripheral wall of the stator 1, including a first welding position 3 and a second welding position 4; The outer periphery of the shell 2 is also connected with a distributor 6;

[0047] And in the projection plane of the axial end surface of the shell 2, the shell 2 has a shell center 7, the distributor 6 has a distributor center, and the shell center 7 and the distributor center form a shell-distributor center connecting line 8; and the connecting line between the center of the first welding position 3 and the center of the second welding position 4 is a first connecting line 9, and the first connecting line 9 is parallel to the shell-distributor center connecting line 8.

[0048] The present application improves the welding position between the stator and the shell, so that the welding and fixation between the stator and the shell can be completed through the multiple welding positions arranged at intervals, greatly reduces the contact area between the stator and the shell compared with the hot sleeve method in the prior art, thereby effectively reducing the transmission of compressor vibration, and by arranging the connecting line between the centers of the first and second welding positions to be parallel to the shell-distributor center connecting line, the radial vibration transmission between the compressor and the distributor can be effectively inhibited, the radial vibration transmission of the compressor to the distributor is minimized and inhibited, the radial vibration of the distributor is dispersed, the radial vibration of the distributor is reduced to a certain extent, thereby reducing the vibration of the entire compressor assembly, and the vibration reduction and noise reduction effect is greatly improved.

[0049] In some embodiments,

[0050] Further comprising a flange 10, which is also arranged in the shell 2 and located on the axial side of the stator 1, the outer peripheral wall of the flange 10 is welded with the inner wall of the shell 2, and there is a fourth welding position 11 on the outer peripheral wall of the flange 10 in the circumferential direction.

[0051] In the projection plane of the axial end surface of the shell 2, the first welding position 3 on the stator 1 and the fourth welding position 11 of the flange 10 at least partially overlap.

[0052] The present application further arranges the first welding position on the stator opposite to the fourth welding position on the flange in the axial direction, so that the stator and the flange have at least one same fixation position in the circumferential direction, so that the vibration transmission and inhibition of the stator to the rotor and the axial transmission and inhibition of the flange to the shaft can at least be consistent, further inhibiting the vibration generated by the rotation of the rotor and the shaft, further reducing the vibration inside the compressor and improving the vibration reduction and noise reduction performance.

[0053] Further preferably, the outer peripheral wall of the flange 10 further has a fifth welding position 12 and a sixth welding position 13, and the fourth welding position 11, the fifth welding position 12 and the sixth welding position 13 are sequentially and spacedly distributed in the circumferential direction.

[0054] Preferably, the non-uniform distribution of the stator welding points needs to ensure that the first stator welding point partially overlaps the fourth flange welding point. The uniform distribution of the stator welding points only needs to ensure that the line connecting the first stator welding point and the second stator welding point is parallel to the line connecting the center of the shell distributor and the center of the shell, and at this time, the first stator welding point and the fourth flange welding point do not necessarily partially overlap.

[0055] In some embodiments,

[0056] The outer peripheral wall of the stator 1 also has a third welding position 5, and in the projection plane of the axial end surface of the shell 2, the first welding position 3, the second welding position 4, and the third welding position 5 are sequentially and uniformly distributed in the circumferential direction.

[0057] The third welding position is provided, which can further improve the fixing effect of the stator, further improve the vibration reduction effect, and the three welding positions are uniformly and sequentially arranged in the circumferential direction, which can further uniformly distribute the vibration transmission in the circumferential direction, and further play the effect of vibration reduction and noise reduction.

[0058] Figure 1 The compressor is shown in the top view, the strip-shaped shadow part is the angle range of the three stator welding points (seams) I, II, III (i.e., the first welding position 3, the second welding position 4, and the third welding position 5), the semicircular shadow is the range of the three flange welding points a, b, c (i.e., the fourth welding position 11, the fifth welding position 12, and the sixth welding position 13), the stator cutting edge is the gap between the motor stator and the shell, and the line connecting the distributor suction port and the center of the shell is the center line of the distributor and the shell. In the drawing, the axial projection of the stator welding point (seam) I overlaps the flange welding point a, and the stator welding point (seam) I is located at the non-stator cutting edge. A straight line parallel to the center line of the distributor and the shell is drawn based on the stator welding point (seam) I and intersects the shell, and the intersection point of the straight line and the shell is also located at the non-stator cutting edge as the stator welding point (seam) II. In addition, in order to better fix the motor on the shell, the stator welding point (seam) III is taken at the non-stator cutting edge on the other side of the line connecting the stator welding point (seam) I and the stator welding point (seam) II.

[0059] In some embodiments,

[0060] The outer peripheral wall of the stator 1 has a cutting edge 14 and a non-cutting edge 15, the cutting edge 14 is formed by cutting part of the structure on the original outer peripheral wall of the stator 1 towards the radial inner side, the non-cutting edge 15 is between two adjacent cutting edges 14, and the first welding position 3, the second welding position 4, and the third welding position 5 are all arranged on the outer peripheral wall of the non-cutting edge 15.

[0061] The plurality of welding positions are preferably arranged on the non-cutting edge, the distance between the stator and the shell can be reduced, the welding fixing effect is improved, the cutting edge can reduce the contact area between the stator and the shell, and the vibration reduction and noise reduction effect is further improved.

[0062] In some embodiments,

[0063] In the projection plane of the axial end surface of the shell 2, the first welding position 3, the second welding position 4 and the third welding position 5 are uniformly distributed in the circumferential direction, the centers of the first welding position 3, the second welding position 4 and the third welding position 5 are sequentially connected to form an equilateral triangle, and the central angle of the arc segment on the inner wall of the shell 2 between the center of the first welding position 3 and the center of the second welding position 4 is 120°, the central angle of the arc segment on the inner wall of the shell 2 between the center of the second welding position 4 and the center of the third welding position 5 is 120°, and the central angle of the arc segment on the inner wall of the shell 2 between the center of the third welding position 5 and the center of the first welding position 3 is 120°.

[0064] In some embodiments,

[0065] In the projection plane of the axial end surface of the shell 2, the first welding position 3, the second welding position 4 and the third welding position 5 are uniformly distributed in the circumferential direction.

[0066] This is another embodiment of the present application, that is, the stator welding points (joints) I, II and III are three circumferential non-uniform continuous welds, and the welding needs to ensure that the axial heights of the three continuous welds are the same and the starting and ending positions of the welds are located on the same plane; each continuous weld needs to be kept parallel to the compressor axis, that is, the weld needs to be vertical and cannot be inclined; the sum of the axial lengths of the three welds needs to be controlled within the height of the stator stack.

[0067] In some embodiments,

[0068] The first welding position 3 extends in the axial direction on the outer peripheral wall of the stator 1, the second welding position 4 extends in the axial direction on the outer peripheral wall of the stator 1, the third welding position 5 extends in the axial direction on the outer peripheral wall of the stator 1, and the sum of the axial lengths of the first welding position 3, the second welding position 4 and the third welding position 5 does not exceed the axial length of the stator 1.

[0069] The present application limits the axial length of the welding position, which can further reduce the contact area between the stator and the shell while ensuring the welding firmness between the stator and the shell, and further reduces the vibration.

[0070] In some embodiments,

[0071] The axial length of the first welding position 3 is less than 1 / 3 of the axial length of the stator 1, the axial length of the second welding position 4 is less than 1 / 3 of the axial length of the stator 1, and the axial length of the third welding position 5 is less than 1 / 3 of the axial length of the stator 1.

[0072] The present application can further reduce the contact area between the stator and the shell while ensuring the firmness of the welding between the stator and the shell by limiting the axial length of the welding position.

[0073] Figure 2 The compressor cross-sectional view is shown. The long strip in the axial direction is the stator welding point (seam) I, and the welding method is laser welding. During welding, the corresponding position of the shell assembly and the outer part of the motor stator are fused together to achieve the connection effect. The stator welding point (seam) is located at the central position of the motor stator outside (axial direction), and the axial length of a single welding seam does not exceed 1 / 3 of the stator stack height (pure iron core height) (to reduce vibration while ensuring welding strength and firmness), and the total length of three welding seams cannot exceed the stator stack height.

[0074] In some embodiments,

[0075] The axial one end of the first welding position 3, the axial one end of the second welding position 4, and the axial one end of the third welding position 5 are located on the same first axial plane, the axial other end of the first welding position 3, the axial other end of the second welding position 4, and the axial other end of the third welding position 5 are located on the same second axial plane, the first axial plane is perpendicular to the center axis of the stator 1, and the second axial plane is perpendicular to the center axis of the stator 1.

[0076] That is, the axial height of the three continuous welding seams is the same, and the starting and ending positions of the welding seams are located on the same plane, which can further improve the uniformity of structural support, improve the welding firmness, and further improve the vibration reduction performance; each continuous welding seam needs to be kept parallel to the compressor axis, that is, the welding seam needs to be vertical and cannot be inclined; the sum of the axial lengths of the three welding seams needs to be controlled within the stator stack height.

[0077] In some embodiments,

[0078] The axial one end of the first welding position 3 and the same axial one end surface of the stator 1 have a first distance greater than 0, the axial other end of the first welding position 3 and the same axial other end surface of the stator 1 have a second distance greater than 0, and the first distance and the second distance are equal;

[0079] The third distance between the axial one end of the third welding position 5 and the same axial one end surface of the stator 1 is greater than 0, the fourth distance between the axial other end of the third welding position 5 and the same axial other end surface of the stator 1 is greater than 0, and the third distance is equal to the fourth distance.

[0080] The third distance between the axial one end of the third welding position 5 and the same axial one end surface of the stator 1 is greater than 0, the fourth distance between the axial other end of the third welding position 5 and the same axial other end surface of the stator 1 is greater than 0, and the third distance is equal to the fourth distance.

[0081] The present application can further improve the welding firmness and the damping performance by locating the stator welding points (joints) at the central position (axial direction) outside the motor stator.

[0082] The present application allows the stator welding points (joints) I, II and III to be uniformly distributed (more uniform stress and more balance) under the premise that the connecting lines of the stator welding points (joints) I and II are parallel to the center connecting line of the shell distributor, and the stator welding points (joints) I, II and III are located in the non-stator cutting edge (uncut part), as shown in the figure. Figure 1 The starting angle of the welding point is the included angle between the welding point II and the center connecting line of the distributor and the center connecting line of the shell. At this time, the welding position and height of the welding seam are required to be consistent with those in the non-uniform distribution.

[0083] The present application also provides a compressor assembly comprising the stator shell assembly.

[0084] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application. The above description is only the preferred embodiment of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A stator housing assembly characterized by: The stator (1) and the shell (2), the stator (1) is located inside the shell (2), the outer wall of the stator (1) is welded with the inner wall of the shell (2); The outer wall of the stator (1) has at least two welding positions in the circumferential direction, including the first welding position (3) and the second welding position (4); The outer wall of the shell (2) is also connected with the distributor (6); And in the projection plane of the axial end surface of the shell (2), the shell (2) has a shell center (7), the distributor (6) has a distributor center, and the shell center (7) and the distributor center form a shell-distributor center line (8); The center line of the first welding position (3) and the center of the second welding position (4) is the first line (9), and the first line (9) is parallel to the shell-distributor center line (8); Also includes a flange (10), the flange (10) is also arranged in the shell (2) and the flange (10) is located on one side of the axial direction of the stator (1), the outer wall of the flange (10) is welded with the inner wall of the shell (2), and the outer wall of the flange (10) has a fourth welding position (11) in the circumferential direction; In the projection plane of the axial end surface of the shell (2), the first welding position (3) on the stator (1) and the fourth welding position (11) of the flange (10) are at least partially overlapped.

2. The stator shell assembly according to claim 1, wherein: The outer wall of the stator (1) also has a third welding position (5), and in the projection plane of the axial end surface of the shell (2), the first welding position (3), the second welding position (4) and the third welding position (5) are sequentially distributed in the circumferential direction.

3. The stator shell assembly according to claim 2, wherein: The outer wall of the stator (1) has a cut edge (14) and a non-cut edge (15), the cut edge (14) is formed by cutting part of the structure on the original outer wall of the stator (1) towards the radial inner side, the non-cut edge (15) is between two adjacent cut edges (14), and the first welding position (3), the second welding position (4) and the third welding position (5) are arranged on the outer wall of the non-cut edge (15).

4. The stator shell assembly according to claim 3, wherein: ​ In the projection plane of the axial end surface of the shell (2), the first welding position (3), the second welding position (4) and the third welding position (5) are uniformly distributed in the circumferential direction, the center of the first welding position (3), the center of the second welding position (4) and the center of the third welding position (5) are sequentially connected to form an equilateral triangle, and the central angle of the arc segment on the inner wall of the shell (2) between the center of the first welding position (3) and the center of the second welding position (4) is 120°, the central angle of the arc segment on the inner wall of the shell (2) between the center of the second welding position (4) and the center of the third welding position (5) is 120°, and the central angle of the arc segment on the inner wall of the shell (2) between the center of the third welding position (5) and the center of the first welding position (3) is 120°.

5. The stator shell assembly of claim 3, wherein: In the projection plane of the axial end surface of the shell (2), the first welding position (3), the second welding position (4) and the third welding position (5) are non-uniformly distributed in the circumferential direction.

6. The stator shell assembly of any one of claims 2-5, wherein: The first welding position (3) extends in the axial direction on the outer peripheral wall of the stator (1), the second welding position (4) extends in the axial direction on the outer peripheral wall of the stator (1), the third welding position (5) extends in the axial direction on the outer peripheral wall of the stator (1), and the sum of the axial length of the first welding position (3), the axial length of the second welding position (4) and the axial length of the third welding position (5) is less than the axial length of the stator (1).

7. The stator shell assembly of claim 6, wherein: The axial length of the first welding position (3) is less than 1 / 3 of the axial length of the stator (1), the axial length of the second welding position (4) is less than 1 / 3 of the axial length of the stator (1), and the axial length of the third welding position (5) is less than 1 / 3 of the axial length of the stator (1).

8. The stator shell assembly of claim 2, wherein: The axial one end of the first welding position (3), the axial one end of the second welding position (4) and the axial one end of the third welding position (5) are located on the same first axial plane, the axial other end of the first welding position (3), the axial other end of the second welding position (4) and the axial other end of the third welding position (5) are located on the same second axial plane, the first axial plane is perpendicular to the central axis of the stator (1), and the second axial plane is perpendicular to the central axis of the stator (1).

9. The stator shell assembly of claim 8, wherein: a first distance between an axial one end of the first welding position (3) and an axial one end surface of the stator (1) is greater than 0, a second distance between an axial other end of the first welding position (3) and an axial other end surface of the stator (1) is greater than 0, and the first distance is equal to the second distance; a third distance between an axial one end of the second welding position (4) and an axial one end surface of the stator (1) is greater than 0, a fourth distance between an axial other end of the second welding position (4) and an axial other end surface of the stator (1) is greater than 0, and the third distance is equal to the fourth distance; a fifth distance between an axial one end of the third welding position (5) and an axial one end surface of the stator (1) is greater than 0, a sixth distance between an axial other end of the third welding position (5) and an axial other end surface of the stator (1) is greater than 0, and the fifth distance is equal to the sixth distance.

10. A compressor assembly characterized by: A stator housing assembly comprising the stator housing assembly of any one of claims 1-9.

Images