CN215817677U - Stator assembly, motor and compressor - Google Patents
Stator assembly, motor and compressor Download PDFInfo
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- CN215817677U CN215817677U CN202121925427.4U CN202121925427U CN215817677U CN 215817677 U CN215817677 U CN 215817677U CN 202121925427 U CN202121925427 U CN 202121925427U CN 215817677 U CN215817677 U CN 215817677U
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- stator core
- limiting
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- stator assembly
- limiting part
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Abstract
The application provides a stator assembly, a motor and a compressor, which comprise a shell, a stator core and a fixed structure, wherein the stator core is arranged in the shell; the fixed structure is arranged on the inner wall of the shell; the fixed structure is matched with the stator core in a concave-convex mode so as to limit the stator core. According to stator module, motor and compressor of this application, when can avoiding stator core iron loss to increase, avoid influencing the motor magnetic circuit.
Description
Technical Field
The application belongs to the technical field of compressors, and particularly relates to a stator assembly, a motor and a compressor.
Background
At present, the stator and the shell of the variable frequency compressor generally adopt an interference fit mode, the heating shell is deformed and sleeved on the outer wall of the stator core, the stator core and the shell form tight interference fit along with the reduction of the temperature of the shell, and the fixation and torque transmission of the shell and the stator core are ensured by the interference force during the operation of the compressor. The existing hot jacket mode is used for meeting the requirement of sufficient torque transmission, and meanwhile, the connection strength of the shell and the stator core cannot be influenced. However, in the design, large interference is needed, and at the moment, the stator core is subjected to large shell pressure stress, so that the iron loss of the motor is large, and the efficiency is reduced. Or, stator core and casing are interference fit or clearance fit, and welded fastening, consequently, satisfying under sufficient moment of torsion and joint strength condition, stator core and casing only need little interference or little clearance fit can, avoid receiving the great extrusion force of casing and lead to the problem that iron loss increases, efficiency reduces because of stator core. Realize the fixed of stator through welding stator core and casing, but solder joint or welding seam on the stator core still can influence the motor magnetic circuit, or lead to the asymmetric scheduling problem of magnetic circuit, to the miniaturized trend of present compressor, motor magnetic circuit saturation degree is high simultaneously, and this scheme will be more outstanding to the adverse effect of magnetic circuit.
Therefore, how to provide a stator assembly, a motor and a compressor which can avoid the iron loss of a stator core from increasing and avoid influencing the magnetic circuit of the motor becomes a problem which needs to be solved urgently by a person skilled in the art.
SUMMERY OF THE UTILITY MODEL
Therefore, the technical problem that this application will be solved lies in providing a stator module, motor and compressor, when can avoiding stator core iron loss to increase, avoids influencing the motor magnetic circuit.
In order to solve the above problems, the present application provides a stator assembly including:
a housing;
the stator iron core is arranged in the shell;
the fixing structure is arranged on the inner wall of the shell; the fixed structure is matched with the stator core in a concave-convex mode so as to limit the stator core.
Further, fixed knot constructs including spacing portion, and spacing portion sets up in stator core's tip, and spacing portion is used for spacing stator core.
Furthermore, a first concave-convex structure is arranged on the limiting portion, a second concave-convex structure is arranged on the stator core, and the first concave-convex structure and the second concave-convex structure are matched to limit the stator core.
Furthermore, the fixing structure also comprises a fixing part which is fixedly connected with the shell; the limiting part is arranged on the inner peripheral side of the fixing part and is positioned at one end of the fixing part close to the stator core; in the axial direction, the length of the fixing part is H1, the length of the limiting part is H2, wherein H1> H2;
and/or the contact surface of the fixing part and the shell is an arc surface.
Furthermore, the stator core is provided with a yielding groove, and the limiting part is wholly or partially arranged in the yielding groove; and/or the limiting part is in clearance fit with the abdicating groove.
Further, on stator module's cross section, the shape of spacing portion is trapezoidal, and trapezoidal upper base is located the inner periphery of spacing portion, and trapezoidal lower base is located the periphery of spacing portion.
Furthermore, the limiting part comprises a first limiting part which is arranged at the first end of the stator core; the number of the first limiting parts is at least one, and when the number of the first limiting parts is more than two, the more than two first limiting parts are sequentially arranged around the circumferential direction of the stator core;
and/or, spacing portion includes the spacing portion of second, and the spacing portion of second sets up in stator core's second end, and the quantity of the spacing portion of second sets up to at least one, and when the quantity of the spacing portion of second was more than two, the spacing portion of second more than two was arranged around stator core's circumference in proper order.
Further, fixed knot constructs still including solid fixed ring, and spacing portion sets up on solid fixed ring.
Further, when the fixing structure further comprises a fixing part, the length of the fixing part in the axial direction is H1, H1 is more than or equal to 3 mm;
and/or when the fixing structure comprises a limiting part, and the limiting part comprises at least three first limiting parts;
and/or, when the fixed structure comprises a limiting part, and the limiting part comprises a second limiting part, the number of the second limiting part is at least three.
Furthermore, the fixed structure is fixedly connected with the shell in a shrink fit or welding mode;
and/or, the fixing structure is in interference fit or clearance fit with the shell.
Furthermore, when the fixed structure is fixedly connected with the shell in a welding mode, welding points and the stator core are staggered in the axial direction; and/or the welding points are obliquely arranged from outside to inside in the direction close to the stator core.
According to still another aspect of the present application, there is provided an electric machine including a stator assembly as described above.
According to still another aspect of the present application, there is provided a compressor including a stator assembly, and a motor is the above-described stator assembly.
According to the stator assembly, the motor and the compressor, the fixed structure is adopted to limit the movement of the stator core, so that the connection between the stator core and the shell is simpler, the direct hot sleeve connection between the stator core and the shell can be prevented, and the problem of increased motor iron loss caused by hot sleeve stress can be solved; the influence on the magnetic circuit structure of the motor when the stator core and the shell are directly welded can be avoided; when this application can avoid stator core iron loss to increase, avoid influencing motor magnetism, and then improve the stability of compressor operation, reduce vibration noise.
Drawings
Fig. 1 is a schematic structural view of a stator assembly according to an embodiment of the present application;
FIG. 2 is a schematic structural diagram of a fixing structure according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a stator core according to an embodiment of the present application.
The reference numerals are represented as:
1. a housing; 2. a stator core; 21. a yielding groove; 22. a second relief structure; 3. a fixed structure; 31. a limiting part; 32. a first relief structure; 33. a fixed part; 4. welding spots; 5. a rotor assembly.
Detailed Description
Referring to fig. 1-3 in combination, a stator assembly includes a housing 1, a stator core 2, and a fixing structure 3, the stator core 2 being disposed in the housing 1; the fixed structure 3 is arranged on the inner wall of the shell 1; the fixed structure 3 is in concave-convex fit with the stator core 2 to limit the movement of the stator core 2, and the fixed structure 3 is adopted to limit the stator core 2, so that the connection between the stator core 2 and the shell 1 is simpler, the direct hot sleeve connection between the stator core 2 and the shell 1 can be prevented, and the problem of increased iron loss of the motor caused by hot sleeve stress can be solved; the influence on the magnetic circuit structure of the motor when the stator core 2 and the shell 1 are directly welded can be avoided; when this application can avoid 2 iron losses of stator core to increase, avoid influencing the motor magnetism, and then improve the stability of compressor operation, reduce vibration noise. This application avoids stator core 2 directly with the fixed radial compressive stress who produces of motor casing 1, avoids the problem that the motor iron loss that leads to from this increases, efficiency reduces, has also avoided simultaneously because the noise problem that 2 atress of stator core warp, loose production. In addition, the stator core 2 does not need to be welded and fixed, so that the magnetic circuit structure of the motor is not influenced, and the running stability of the compressor is improved.
The application also discloses some embodiments, fixed knot constructs 3 including spacing portion 31, and spacing portion 31 sets up in stator core 2's tip, and spacing portion 31 is used for spacing stator core 2. The limiting parts 31 can be arranged at two ends of the stator core 2, and at the moment, the stator core 2 is limited between the limiting parts 31 at the two ends, so that the axial limiting effect of the stator core is achieved; the limiting portion 31 may be a limiting plate, a limiting block, or other structures having a stopping function. Through fixed knot structure 3 and 1 fixed coordination of casing, loss increase, noise increase, the reliability problem that produce when avoiding stator core 2 and 1 direct fixed coordination of casing. The two stopper portions 31 are respectively provided and fixed to the measuring ends of the stator core 2. The stator core 2 and the shell 1 are in micro interference or clearance fit. And the fixed structures 3 positioned at the two ends of the stator core 2 are welded and fixed with the shell 1.
The application also discloses some embodiments, be provided with first concave-convex structure 32 on the spacing portion 31, be provided with second concave-convex structure 22 on stator core 2, first concave-convex structure 32 cooperatees with second concave-convex structure 22 and carries on spacingly to stator core 2. The first concave-convex structure 32 is a protrusion, the second concave-convex structure 22 is a groove, the protrusion is matched with the groove, and the protrusion extends into the groove, so that the movement of the stator core 2 on the vertical axis can be limited. The groove is formed in the end face of the stator structure, the protrusion can be a strip protrusion, and the strip protrusion extends in the axial direction. The protrusion can also be a convex point, the end surface of the limiting part 31 close to the stator core 2 is provided with the protrusion, the end surface of the stator core 2 contacting the limiting part 31 is provided with a groove closely matched with the convex point, and the fixing structure 3 and the stator core 2 are convenient to position and assemble.
The application also discloses some embodiments, the fixing structure 3 further comprises a fixing part 33, and the fixing part 33 is fixedly connected with the shell 1; the stopper 31 is provided on the inner peripheral side of the fixing portion 33 and located at one end of the fixing portion 33 close to the stator core 2; in the axial direction, the length of the fixing part 33 is H1, and the length of the limiting part 31 is H2, wherein H1> H2; namely, the limiting part 31 forms a step structure on the fixing part 33; since H1> H2 is welded to the housing 1, the weld 4 can be separated from the stator core 2 during welding, and the magnetic circuit of the motor can be further prevented from being affected.
The application also discloses some embodiments, and the contact surface of the fixing part 33 and the shell 1 is an arc surface. Casing 1's cross section is the arcwall face, and the periphery wall of fixed part 33 contacts with casing 1's internal surface, and consequently the periphery wall of fixed part 33 and casing 1's internal surface shape looks adaptation, and fixed part 33 is the arcwall face with casing 1's contact surface promptly, can be with casing 1 better fixed like this, and then more stable to stator core 2's fixed.
The application also discloses some embodiments, the stator core 2 is provided with a yielding groove 21, and the limiting part 31 is wholly or partially arranged in the yielding groove 21; the abdicating groove 21 is formed in the end face of the stator core 2, the cross section of the abdicating groove 21 is also trapezoidal and corresponds to the cross section of the limiting portion 31, so that the limiting portion 31 can further limit the stator core 2 in the circumferential direction.
The application also discloses some embodiments, spacing portion 31 and the groove of stepping down 21 clearance fit. In fixed knot constructs 3 embedding stator core 2 both ends abdicate groove 21, can guarantee that fixed knot constructs 3 and stator core 2 has sufficient contact surface, remains sufficient space simultaneously and is used for placing winding overhang, or insulating skeleton.
The application also discloses some embodiments, on stator module's cross section, spacing portion 31's shape is trapezoidal, and trapezoidal upper base is located spacing portion 31's inner periphery, and trapezoidal lower base is located spacing portion 31's periphery. Namely, the side length of the limiting part 31 close to the shell 1 is larger than the side length close to the inner circle side of the stator, and the side surface matched with the shell 1 is an arc-shaped surface.
The application also discloses some embodiments, the limiting part 31 comprises a first limiting part 31, and the first limiting part 31 is arranged at the first end of the stator core 2; the number of the first limiting parts 31 is set to be at least one, and when the number of the first limiting parts 31 is more than two, the more than two first limiting parts 31 are sequentially arranged around the circumferential direction of the stator core 2;
the application also discloses some embodiments, the limiting part 31 includes a second limiting part 31, the second limiting part 31 is disposed at the second end of the stator core 2, the number of the second limiting parts 31 is set to be at least one, and when the number of the second limiting parts 31 is more than two, the more than two second limiting parts 31 are sequentially arranged around the circumference of the stator core 2.
The application also discloses some embodiments, and fixed knot constructs 3 and still includes solid fixed ring, and spacing portion 31 sets up on solid fixed ring. That is, the stopper portions 31 are integrally connected by a connection ring. The coupling ring includes a first coupling ring on which the first stopper portion 31 is disposed, and the coupling ring includes a second coupling ring on which the second stopper portion 31 is disposed. The limiting part 31 and the connecting ring are integrally formed, the connecting ring can be welded or sleeved on the shell 1 in a hot mode, the welding mode is simpler, and the assembly is more convenient.
The application also discloses some embodiments, when the fixing structure 3 further comprises a fixing part 33, and the length of the fixing part 33 is H1 in the axial direction, H1 is more than or equal to 3 mm; a sufficient welding position can be ensured.
The present application also discloses some embodiments, when the fixing structure 3 includes the limiting portion 31, and the limiting portion 31 includes the first limiting portion 31, the number of the first limiting portions 31 is set to be at least three, and the at least three first limiting portions 31 are uniformly arranged around the circumference of the stator core 2.
The present application also discloses some embodiments, when the fixing structure 3 includes the limiting portion 31, and the limiting portion 31 includes the second limiting portion 31, the number of the second limiting portions 31 is set to be at least three, and the at least three second limiting portions 31 are uniformly arranged around the circumference of the stator core 2. The number of the first limiting parts 31 and/or the second limiting parts 31 is larger than three, and the fixing effect is good. In addition, the number of the first limiting parts 31 may be different from that of the second limiting parts 31, or may be the same, for example, four first limiting parts 31 are provided, and five second limiting parts 31 are provided; the positions of the first stopper portion 31 and the second stopper portion 31 in the circumferential direction may or may not correspond to each other.
The application also discloses some embodiments, and the fixed structure 3 is fixedly connected with the shell 1 through a shrink sleeve or a welding mode.
The application also discloses embodiments in which the fixing structure 3 is in an interference fit or clearance fit with the housing 1.
The application also discloses some embodiments, when the fixed structure 3 is fixedly connected with the shell 1 in a welding mode, the welding points 4 are staggered with the stator core 2 in the axial direction; and/or the welding spots 4 are arranged obliquely from outside to inside in the direction close to the stator core 2. The welding direction is inclined from the two ends of the iron core to the axial center of the iron core, certain axial force can be generated on the fixed structure 3, the fixing force of the stator iron core 2 is enhanced, and the running reliability of the compressor is guaranteed.
The stator assembly further comprises a stator core 2, a framework, insulating slot paper and a winding. In this application, stator core 2 carries out the axial through fixed knot constructs 3 spacing, is fixed in casing 1 in, because its radial direction does not receive the force or receives less interference stress, can avoid the stator iron to decrease and increase, avoids simultaneously because stator core 2 produces after the atress warp, loose and the noise problem that leads to. In addition, the stator core 2 does not need to be welded and fixed, so that the magnetic circuit structure of the motor is not influenced, and the running stability of the compressor is improved.
According to an embodiment of the present application, there is provided an electric machine including a stator assembly, the stator assembly being as described above.
According to an embodiment of the application, a compressor is provided, and comprises a stator assembly, wherein the motor is the stator assembly. The compressor comprises a shell 1 assembly, a motor assembly and a pump body assembly. Motor element, pump body subassembly are arranged in casing 1 along the axial, motor element includes stator module, rotor subassembly 5 and fixed knot construct 3.
It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.
The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed. The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present application, and these modifications and variations should also be considered as the protection scope of the present application.
Claims (13)
1. A stator assembly, comprising:
a housing (1);
the stator core (2), the said stator core (2) is set up in the said body (1);
the fixing structure (3) is arranged on the inner wall of the shell (1); fixed knot constructs (3) with stator core (2) unsmooth cooperation is in order to right stator core (2) carry on spacingly.
2. The stator assembly according to claim 1, characterized in that the fixing structure (3) comprises a limiting portion (31), the limiting portion (31) is arranged at an end of the stator core (2), and the limiting portion (31) is used for limiting the stator core (2).
3. The stator assembly according to claim 2, characterized in that a first concave-convex structure (32) is arranged on the limiting portion (31), a second concave-convex structure (22) is arranged on the stator core (2), and the first concave-convex structure (32) and the second concave-convex structure (22) are matched to limit the stator core (2).
4. The stator assembly according to claim 2, characterized in that the fixing structure (3) further comprises a fixing portion (33), the fixing portion (33) being fixedly connected with the housing (1); the limiting part (31) is arranged on the inner peripheral side of the fixing part (33) and is positioned at one end, close to the stator core (2), of the fixing part (33); in the axial direction, the length of the fixing part (33) is H1, the length of the limiting part (31) is H2, wherein H1> H2;
and/or the contact surface of the fixing part (33) and the shell (1) is an arc surface.
5. The stator assembly according to claim 2, characterized in that the stator core (2) is provided with a relief groove (21), and the limiting part (31) is wholly or partially arranged in the relief groove (21); and/or the limiting part (31) is in clearance fit with the abdicating groove (21).
6. The stator assembly according to claim 3, characterized in that, in the cross section of the stator assembly, the shape of the limiting part (31) is trapezoid, the upper base of the trapezoid is located at the inner periphery of the limiting part (31), and the lower base of the trapezoid is located at the outer periphery of the limiting part (31).
7. The stator assembly according to claim 2, characterized in that the limiting part (31) comprises a first limiting part (31), the first limiting part (31) being arranged at a first end of the stator core (2); the number of the first limiting parts (31) is set to be at least one, and when the number of the first limiting parts (31) is more than two, the more than two first limiting parts (31) are sequentially arranged around the circumferential direction of the stator core (2);
and/or, spacing portion (31) includes spacing portion (31) of second, spacing portion (31) of second set up in the second end of stator core (2), the quantity of the spacing portion (31) of second sets up to at least one, works as when the quantity of the spacing portion (31) of second is more than two, more than two spacing portion (31) of second centers on stator core (2)'s circumference arranges in proper order.
8. The stator assembly according to claim 2, characterized in that the fixation structure (3) further comprises a fixation ring, the limiting portion (31) being arranged on the fixation ring.
9. Stator assembly according to any of claims 1-8, characterized in that when the fixation structure (3) further comprises a fixation part (33), the length of the fixation part (33) in axial direction is H1, H1 ≧ 3 mm;
and/or, when the fixing structure (3) comprises a limiting part (31), and the limiting part (31) comprises a first limiting part (31), the number of the first limiting parts (31) is at least three;
and/or, when the fixing structure (3) comprises a limiting part (31), and the limiting part (31) comprises a second limiting part (31), the number of the second limiting parts (31) is at least three.
10. The stator assembly according to claim 1, characterized in that the fixed structure (3) is fixedly connected with the casing (1) by means of shrink-fitting or welding;
and/or the fixing structure (3) is in interference fit or clearance fit with the shell (1).
11. The stator assembly according to claim 10, characterized in that when the fixing structure (3) is fixedly connected with the housing (1) by welding, the welding points (4) are axially offset from the stator core (2); and/or the welding points (4) are obliquely arranged from outside to inside in the direction close to the stator core (2).
12. An electrical machine comprising a stator assembly, characterized in that the stator assembly is a stator assembly according to any of claims 1-11.
13. A compressor comprising a stator assembly, characterized in that the stator assembly is a stator assembly according to any of claims 1-11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121925427.4U CN215817677U (en) | 2021-08-17 | 2021-08-17 | Stator assembly, motor and compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121925427.4U CN215817677U (en) | 2021-08-17 | 2021-08-17 | Stator assembly, motor and compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215817677U true CN215817677U (en) | 2022-02-11 |
Family
ID=80132415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121925427.4U Active CN215817677U (en) | 2021-08-17 | 2021-08-17 | Stator assembly, motor and compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215817677U (en) |
-
2021
- 2021-08-17 CN CN202121925427.4U patent/CN215817677U/en active Active
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