Stator assembly, compressor motor, compressor and refrigerator

Abstract

The utility model provides a stator assembly, a compressor motor, a compressor and a refrigerator, and relates to the technical field of compression equipment, the stator assembly comprises a stator iron core, an annular accommodating cavity is formed in the stator iron core and is used for accommodating a rotor, and a plurality of winding coils are arranged on the stator iron core along the periphery of the accommodating cavity in the circumferential direction; a first area and a second area are formed on the stator core in the circumferential direction, the height of the winding coil located in the second area is smaller than that of the winding coil located in the first area in the thickness direction of the stator core, and the second area is used for arranging an air cylinder seat of the compressor. The height of the winding coil of the second area is reduced relative to the height of the winding coil of the first area, the air cylinder seat is arranged in the second area with the smaller winding coil height, the height of the air cylinder seat on the second area can be reduced accordingly, the overall height of the compressor is further reduced, and the compressor can be applied to a small-size scene. In addition, the air cylinder seat does not interfere with a winding coil in the second area, and the safe electrical distance can be guaranteed.

Description

Technical Field

[0001] This application relates to the field of compression equipment technology, specifically to a stator assembly, a compressor motor, a compressor, and a refrigerator. Background Technology

[0002] Currently, the permanent magnet synchronous motors used in inverter refrigerator compressors on the market have a stator core with uniform height throughout. The stator windings are evenly wound on the teeth of the stator core, with each tooth having the same thickness and the same number of turns of enameled wire. This results in the same height of the coil on each tooth. In the compressor cylinder design, the cylinder support feet must be higher than the coil to ensure electrical safety distances. Consequently, the design height of the cylinder bore / cylinder head above the cylinder support feet is increased, leading to an increase in the overall height of the compressor. Utility Model Content

[0003] The purpose of this application is to provide a stator assembly, compressor motor, compressor, and refrigerator that are capable of...

[0004] In one aspect of this application, a stator assembly is provided, including a stator core, wherein an annular accommodating cavity is formed on the stator core for accommodating a rotor, and a plurality of winding coils are arranged circumferentially along the outer periphery of the accommodating cavity on the stator core.

[0005] The stator core is formed with a first region and a second region along the circumferential direction. Along the thickness direction of the stator core, the height of the winding coil located in the second region is less than the height of the winding coil located in the first region. The second region is used to arrange the cylinder seat of the compressor.

[0006] Optionally, the stator core has a circumferentially formed receiving groove that extends through the thickness direction, and a winding tooth is formed between adjacent receiving grooves. The winding coil passes through two adjacent receiving grooves to be wound around the winding tooth.

[0007] Optionally, along the thickness direction, the height of the winding teeth in the second region is less than the height of the winding teeth in the first region.

[0008] Optionally, along the thickness direction, the upper surface of the stator core in the second region is lower than the upper surface of the first region, so that the cylinder seat can be close to the upper surface of the stator core in the second region.

[0009] Optionally, the winding coil and the winding teeth are arranged in a one-to-one correspondence.

[0010] Optionally, the plurality of winding coils are evenly distributed around the outer circumference of the receiving cavity.

[0011] In one aspect of this application, a compressor motor is provided, comprising: the stator assembly described above, a rotor, and a cylinder seat, wherein the rotor is disposed within a receiving cavity of the stator assembly, and the cylinder seat is arranged in a second region of the stator assembly.

[0012] Optionally, the cylinder seat has a support foot, and the cylinder seat is connected and fixed to the stator core of the stator assembly through the support foot.

[0013] In one aspect of this application, a compressor is provided, comprising: a housing and the aforementioned compressor motor disposed within the housing.

[0014] In one aspect of this application, a refrigerator is provided, including: the compressor described above, and a compartment for storing items.

[0015] The stator assembly, compressor motor, compressor, and refrigerator provided in this application embodiment include a stator core with an annular cavity for housing the rotor. Multiple winding coils are arranged circumferentially along the outer periphery of the cavity on the stator core. A first region and a second region are formed circumferentially on the stator core. Along the thickness direction of the stator core, the height of the winding coils in the second region is less than the height of the winding coils in the first region. The second region is used to house the compressor cylinder seat. The height of the winding coils in the second region is lower than the height of the winding coils in the first region. By placing the cylinder seat in the second region with the smaller winding coil height, the height of the cylinder seat in the second region can also be reduced, i.e., the height of the cylinder seat relative to the stator core is reduced, thereby reducing the overall height of the compressor. This allows the compressor to be used in small-sized applications. It also prevents interference between the cylinder seat and the winding coils in the second region, ensuring electrical safety distances.

[0016] The compressor motor includes the stator assembly described above, as well as a rotor and a cylinder seat, wherein the rotor is disposed within the receiving cavity of the stator assembly, and the cylinder seat is arranged in the second region of the stator assembly.

[0017] The compressor includes a housing and the aforementioned compressor motor disposed within the housing.

[0018] The refrigerator includes the compressor mentioned above, as well as a compartment for storing items. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is one of the schematic diagrams of the stator assembly structure provided in this embodiment;

[0021] Figure 2 This is the second schematic diagram of the stator assembly structure provided in this embodiment;

[0022] Figure 3 This is the third schematic diagram of the stator assembly structure provided in this embodiment;

[0023] Figure 4 This is a schematic diagram of the compressor motor structure provided in this embodiment;

[0024] Figure 5 This is a schematic diagram of the structure of a stator assembly in the prior art;

[0025] Figure 6 This is a schematic diagram of a conventional compressor.

[0026] Icons: 10-Stator assembly; 11-Stator core; 110-Accommodation cavity; 111-First zone; 112-Second zone; 111a, 112a-Upper end face; 12-Winding coil; 13-Winding teeth; 21-Cylinder seat; 22-Support foot; H, H0, H1, H2-Height; D-Thickness direction. Detailed Implementation

[0027] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0028] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for simplifying the description, and 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. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0029] It should also be noted that, unless otherwise explicitly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0030] Please refer to Figure 1As shown, this application embodiment provides a stator assembly 10, including: a stator core 11, an annular accommodating cavity 110 formed on the stator core 11 for accommodating a rotor, and a plurality of winding coils 12 arranged circumferentially along the outer periphery of the accommodating cavity 110 on the stator core 11; a first region 111 and a second region 112 are formed circumferentially on the stator core 11, the height H2 of the winding coil 12 located in the second region 112 along the thickness direction D of the stator core 11 is less than the height H1 of the winding coil 12 located in the first region 111, and the second region 112 is used to arrange the cylinder seat 21 of the compressor.

[0031] The stator core 11 has a receiving cavity 110 for mounting the rotor; for example, the stator core 11 and the receiving cavity 110 are arranged coaxially, in other words, the stator core 11 and the rotor are coaxial. Multiple winding coils 12 are also provided on the stator core 11, located on the outer periphery of the receiving cavity 110. The multiple winding coils 12 are arranged circumferentially, and the winding coils 12 can generate a magnetic field when energized.

[0032] The stator assembly 10 and the rotor work together to perform energy conversion. The stator assembly 10 can generate a rotating magnetic field. Specifically, the winding coil 12 on the stator core 11 generates a rotating magnetic field through current. This rotating magnetic field interacts with the magnetic field on the rotor, driving the rotor to rotate and realizing the conversion of electrical energy into mechanical energy.

[0033] Refer to Figure 2 and Figure 3 As shown, a first region 111 and a second region 112 are formed in the circumferential direction of the stator core 11. Both the first region 111 and the second region 112 are distributed with winding coils 12. In the thickness direction D of the stator core 11, the height H2 of the winding coil 12 in the second region 112 is smaller than the height H1 of the winding coil 12 in the first region 111. The second region 112 with the smaller height H2 of the winding coil 12 is used to arrange the cylinder seat 21.

[0034] Because the support feet 22 of the cylinder seat 21 need to be higher than the winding coil 12 to ensure electrical safety distance, in the prior art, when the cylinder seat is located above the winding coil, the design height of the cylinder seat is increased to avoid the winding coil, thus increasing the overall height of the compressor. This application sets the cylinder seat 21 in the second zone 112 where the height H2 of the winding coil 12 is smaller, thereby reducing the height of the cylinder seat 21 and consequently reducing the overall height of the compressor, making the compressor suitable for smaller applications.

[0035] Specifically, the stator core 11 has a circumferentially formed receiving groove that extends through the thickness direction D, and a winding tooth 13 is formed between adjacent receiving grooves. The winding coil 12 passes through two adjacent receiving grooves to be wound on the winding tooth 13.

[0036] Along the thickness direction D, the height of the winding tooth portion 13 in the second region 112 is less than the height of the winding tooth portion 13 in the first region 111.

[0037] Multiple receiving slots are formed on the stator core 11, extending through the thickness direction D of the stator core 11; the solid structure between adjacent receiving slots forms a winding tooth 13 for winding the winding coil 12. For example, each receiving slot has an opening facing the receiving cavity 110, through which the winding coil 12 passes and is wound onto the winding tooth 13.

[0038] The heights of the multiple winding teeth 13 on the stator core 11 along the thickness direction D of the stator core 11 are different. Specifically, the height of the winding teeth 13 in the second region 112 is less than the height of the winding teeth 13 in the first region 111. As a result, the height H2 of the winding coil 12 wound on the winding teeth 13 in the second region 112 is less than the height H1 of the winding coil 12 wound on the winding teeth 13 in the first region 111. The height H2 of the winding coil 12 in the second region 112 is lower than the height H1 of the winding coil 12 in the first region 111. The height of the cylinder seat 21 on the second region 112 can also be reduced accordingly. In addition to reducing the overall height of the compressor, the cylinder seat 21 can also prevent interference with the winding coil 12 in the second region 112, and can also ensure electrical safety distance.

[0039] Furthermore, such as Figure 2 As shown, along the thickness direction D, the upper end face 112a of the stator core 11 in the second region 112 is lower than the upper end face 111a of the first region 111, so that the cylinder seat 21 can approach the upper end face 112a of the stator core 11 in the second region 112.

[0040] The stator core 11 has different heights along the thickness direction D in the second region 112 and the first region 111. The overall height of the second region 112 is smaller than that of the first region 111, which makes the upper end face 112a of the second region 112 lower than the upper end face 111a of the first region 111. The lower end faces of the first region 111 and the second region 112 are coplanar along the thickness direction D, which reduces the height of the first region 111 relative to the height of the second region 112. The reduced second region 112 is used to arrange the cylinder seat 21, so that the cylinder seat 21 can be close to the upper end face 112a of the second region 112, and the height of the cylinder seat 21 is reduced accordingly.

[0041] Generally, the winding teeth 13 used to wind the winding coil 12 correspond one-to-one with the winding coil 12, and multiple winding coils 12 are evenly distributed around the outer circumference of the receiving cavity 110.

[0042] For example, nine winding teeth 13 are formed on the stator core 11, and each winding tooth 13 is wound with a winding coil 12, that is, there are nine winding coils 12 in total; the nine winding teeth 13 or the nine winding coils 12 form a 360-degree circumferential distribution on the outer periphery of the accommodating cavity 110; compared with the solution of canceling the winding coil at the corresponding position of the cylinder seat, the winding coils 12 in this application are still arranged in a circumferential distribution, and the number of winding coils 12 is not reduced. Correspondingly, the current energized by the winding coils 12 will not be reduced. This application does not need to adopt the solution of canceling or reducing the winding coils 12, and can still achieve the purpose of reducing the height of the cylinder seat 21. Without canceling or reducing the winding coils 12, the continuity and integrity of the torque force can also be effectively guaranteed, ensuring the normal operation performance of the stator assembly 10.

[0043] Based on this, refer to Figure 4 As shown, this application embodiment also provides a compressor motor, including the stator assembly 10 described above, as well as a cylinder seat 21 and a rotor. The rotor is disposed in the receiving cavity 110 of the stator assembly 10, and the cylinder seat 21 is arranged in the second region 112 of the stator assembly 10.

[0044] By setting the second zone 112, the height H2 of the winding coil 12 in the second zone 112 is reduced. The cylinder seat 21 set in the second zone 112 can be as close as possible to the winding coil 12 in the second zone 112, and will not interfere with the winding coil 12 in the second zone 112. While reducing the height of the cylinder seat 21, a safe electrical distance between the cylinder seat 21 and the winding coil 12 in the second zone 112 can also be guaranteed.

[0045] The cylinder base 21 is provided with a support foot 22, and the cylinder base 21 is connected and fixed to the stator core 11 of the stator assembly 10 through the support foot 22.

[0046] contrast Figure 4 and Figure 6 It can be seen that, due to Figure 6 Existing technology adopts Figure 5 The winding coil shown, Figure 5 The height H1 of each winding coil is the same; however, after adopting the stator assembly 10 of this application, it is possible to... Figure 4 The height H0 of the middle cylinder seat 21 is compared to Figure 6 In the prior art, the height H of the cylinder seat is significantly reduced, that is, the height H0 is less than the height H, thus achieving the purpose of reducing the height of the cylinder seat 21.

[0047] For example, the support foot 22 is located on the cylinder seat 21, and the support foot 22 and the stator core 11 can be connected and fixed by fasteners such as screws, thereby realizing the connection and fixation of the cylinder seat 21 and the stator assembly 10.

[0048] On the other hand, embodiments of this application also provide a compressor, including a housing and the aforementioned compressor motor disposed within the housing.

[0049] By reducing the height of the cylinder base 21 relative to the stator core 11, the overall height of the compressor is reduced, which helps to reduce the size and volume of the compressor for use in smaller applications.

[0050] This application also discloses a refrigerator, including a compressor as described above, and a compartment for storing items.

[0051] By applying the aforementioned compressor with a reduced height, the volume of the effective area inside the refrigerator of this application, excluding the compressor, can be increased. For example, after the compressor height is reduced, the volume of the refrigerator compartment and the freezer compartment can be increased accordingly without changing the overall volume of the refrigerator, so that it can be used in large-capacity storage scenarios.

[0052] The compressor motor, compressor, and refrigerator contain the same structure and beneficial effects as the stator assembly 10 in the foregoing embodiments. The structure and beneficial effects of the stator assembly 10 have been described in detail in the foregoing embodiments and will not be repeated here.

[0053] The above description is merely an embodiment of this application and is not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A stator assembly (10), characterized in that, include: Stator core (11), an annular accommodating cavity (110) is formed on the stator core (11) for accommodating the rotor, and a plurality of winding coils (12) are arranged on the stator core (11) along the outer periphery of the accommodating cavity (110). The stator core (11) is formed in a first region (111) and a second region (112) along the circumferential direction. Along the thickness direction (D) of the stator core (11), the height (H2) of the winding coil (12) located in the second region (112) is smaller than the height (H1) of the winding coil (12) located in the first region (111). The second region (112) is used to arrange the cylinder seat (21) of the compressor.

2. The stator assembly (10) according to claim 1, characterized in that, The stator core (11) has a circumferentially formed receiving groove that extends along the thickness direction (D), and a winding tooth (13) is formed between adjacent receiving grooves. The winding coil (12) passes through two adjacent receiving grooves to be wound on the winding tooth (13).

3. The stator assembly (10) according to claim 2, characterized in that, Along the thickness direction (D), the height of the winding tooth (13) of the second region (112) is less than the height of the winding tooth (13) of the first region (111).

4. The stator assembly (10) according to claim 3, characterized in that, Along the thickness direction (D), the upper end face (112a) of the stator core (11) in the second region (112) is lower than the upper end face (111a) of the first region (111), so that the cylinder seat (21) can be close to the upper end face (112a) of the stator core (11) in the second region (112).

5. The stator assembly (10) according to any one of claims 2 to 4, characterized in that, The winding coil (12) and the winding teeth (13) are arranged in a one-to-one correspondence.

6. The stator assembly (10) according to claim 5, characterized in that, Multiple winding coils (12) are evenly distributed around the outer circumference of the accommodating cavity (110).

7. A compressor motor, characterized in that, The stator assembly (10) according to any one of claims 1 to 6, and the rotor and cylinder seat (21), the rotor being disposed in a receiving cavity (110) of the stator assembly (10), and the cylinder seat (21) being disposed in a second region (112) of the stator assembly (10).

8. The compressor motor according to claim 7, characterized in that, The cylinder seat (21) is provided with a support foot (22), and the cylinder seat (21) is connected and fixed to the stator core (11) of the stator assembly (10) through the support foot (22).

9. A compressor, characterized in that, It includes a housing and a compressor motor as described in claim 7 or 8 disposed within the housing.

10. A refrigerator, characterized in that, It includes the compressor as described in claim 9, and a compartment for storing items.

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