Motors, compressors and refrigeration equipment

Abstract

The utility model discloses a motor, a compressor and a refrigeration device, and relates to the technical field of refrigeration devices, wherein the motor comprises a stator, a rotor and an insulating frame, the stator comprises a stator lead-out wire, the stator lead-out wire is electrically connected to a winding, the rotor comprises a rotor core and a balancing block, the balancing block is mounted on the rotor core, the insulating frame comprises a first insulating frame and a second insulating frame, the first insulating frame is connected to the stator, the second insulating frame comprises a wire block plate and a mounting plate, the mounting plate is connected to the wire block plate, the second insulating frame is mounted on the first insulating frame through the mounting plate, the upper end surface of the wire block plate is higher than the upper end surface of the balancing block, so that the stator lead-out wire is away from the balancing block; the technical solution provided by the utility model reduces the risk of scratching the stator lead-out wire during the movement of the rotor, and improves the reliability and safety of the motor.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration equipment, in particular to a motor, a compressor and refrigeration equipment. Background Art

[0002] The motor is composed of the stator, rotor and other main components. In the field of motor design and manufacturing, the protection of the stator lead wire has always been an important consideration. As an important connection component inside the motor, the stator lead wire is responsible for connecting the winding to the external power supply or control device to ensure the normal operation of the motor. However, in the prior art, due to the high-speed rotation of the rotor, especially in some compact or high-performance motor designs, the stator lead wire may be worn by the rotor, resulting in electrical connection interruption or performance degradation, and may even cause motor failure and safety risks. Utility Model Content

[0003] The main purpose of the utility model is to provide a motor, a compressor and a refrigeration device, aiming to reduce the risk of scratching the stator lead wire during the movement of the rotor and improve the reliability and safety of the motor.

[0004] To achieve the above-mentioned purpose, the motor proposed by the utility model includes:

[0005] A stator, the stator comprising stator lead wires, the stator lead wires being electrically connected to the windings;

[0006] A rotor, the rotor comprising a rotor core and a balancing block, the balancing block being mounted on the rotor core; and

[0007] An insulating frame, the insulating frame includes a first insulating frame and a second insulating frame, the first insulating frame is connected to the stator, the second insulating frame includes a wire blocking plate and a mounting plate, the mounting plate is connected to the wire blocking plate, the second insulating frame is mounted on the first insulating frame through the mounting plate, the upper end surface of the wire blocking plate is higher than the upper end surface of the balancing block, so that the stator lead wire is away from the balancing block.

[0008] In one implementation, a height difference between an upper end surface of the wire blocking plate and the balancing block is h1, 0

[0009] In one embodiment, reinforcing ribs are provided on the wire blocking plate.

[0010] In one embodiment, the first insulating frame includes an inner wall, an outer wall and insulating teeth, the inner wall and the outer wall are connected by the insulating teeth, the inner wall and the outer wall are both arranged in a ring shape, the mounting plate is installed on the outer wall, and the upper end surface of the wire blocking plate is higher than the upper end surface of the inner wall.

[0011] ​In one embodiment, a height difference between an upper end surface of the wire baffle plate and an upper end surface of the inner wall is h2, 0<h2≤10mm.

[0012] In one embodiment, the upper end surface of the winding is higher than the upper end surface of the inner wall.

[0013] In one embodiment, a height difference between the upper end surface of the winding and the upper end surface of the inner wall is h3, 0≤h3≤10mm.

[0014] In one embodiment, the upper end surface of the outer wall is higher than the upper end surface of the inner wall.

[0015] In one embodiment, a height difference between an upper end surface of the outer wall and an upper end surface of the inner wall is h4, 3mm≤h4≤15mm.

[0016] In one embodiment, one of the outer wall and the mounting plate is a clamping protrusion, and the other is a clamping hole, and the clamping protrusion is connected to the clamping hole.

[0017] In one embodiment, the mounting plate includes a first mounting plate and a second mounting plate both connected to the wire blocking plate, at least one of the first mounting plate and the second mounting plate is provided with a snap-in hole, the outer wall is inserted between the first mounting plate and the second mounting plate, and the snap-in protrusion is snapped into the snap-in hole.

[0018] In one embodiment, the interval between the first mounting plate and the second mounting plate is s1, the thickness of the outer wall is w, and the gap between the first mounting plate or the second mounting plate and the outer wall is s2=(s1-w) / 2, 0.1mm≤s2≤0.5mm.

[0019] The utility model also provides a compressor, comprising the motor as described above.

[0020] The utility model also provides a refrigeration device, comprising the compressor as described above.

[0021] The motor in the technical solution of the utility model includes a stator, a rotor and an insulating frame, the stator includes a stator lead wire, the stator lead wire is electrically connected to the winding, the rotor includes a rotor core and a balancing block, the balancing block is installed on the rotor core, the insulating frame includes a first insulating frame and a second insulating frame, the first insulating frame is connected to the stator, the second insulating frame includes a wire block plate and a mounting plate, the mounting plate is connected to the wire block plate, the second insulating frame is installed on the first insulating frame through the mounting plate, the upper end surface of the wire block plate is higher than the upper end surface of the balancing block, so that the stator lead wire is away from the balancing block, thereby making the stator lead wire away from the rotor, thereby reducing the risk of scratching the stator lead wire during the movement of the rotor, thereby improving the reliability and safety of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0023] Figure 1 A schematic diagram of the structure of the motor provided by the utility model;

[0024] Figure 2 for Figure 1 A schematic diagram of the structure of the first insulating frame;

[0025] Figure 3 for Figure 1 A structural schematic diagram of the second insulating frame from one perspective;

[0026] Figure 4 for Figure 1 A structural schematic diagram of the second insulating frame from another perspective;

[0027] Figure 5 for Figure 1 A diagram showing the first insulating frame and the second insulating frame after being assembled;

[0028] Figure 6 for Figure 5 Cross-sectional view of the middle section AA.

[0029] Description of Figure Numbers:

[0030] 11. first insulating frame; 111. inner wall; 112. outer wall; 1121. snap-fit ​​protrusion; 113. insulating tooth; 12. second insulating frame; 121. wire blocking plate; 122. first mounting plate; 122a. snap-fit ​​hole; 123. second mounting plate; 124. reinforcing rib; 21. stator; 211. stator lead wire; 212. stator core; 22. rotor; 221. rotor core; 222. balancing block; 223. rotor disc; 23. winding.

[0031] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0034] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0035] Reference Figures 1 to 3 The utility model provides a motor, comprising:

[0036] The stator 21 includes a stator lead wire 211, and the stator lead wire 211 is electrically connected to the winding 23;

[0037] A rotor 22, wherein the rotor 22 comprises a rotor core 221 and a balancing block 222, wherein the balancing block 222 is mounted on the rotor core 221; and

[0038] An insulating skeleton, the insulating skeleton includes a first insulating frame 11 and a second insulating frame 12, the first insulating frame 11 is connected to the stator 21, the second insulating frame 12 includes a wire blocking plate 121 and a mounting plate, the mounting plate is connected to the wire blocking plate 121, the second insulating frame 12 is mounted on the first insulating frame 11 through the mounting plate, the upper end surface of the wire blocking plate 121 is higher than the upper end surface of the balancing block 222, so that the stator lead wire 211 is away from the balancing block 222.

[0039] The motor in the technical solution of the utility model includes a stator 21, a rotor 22 and an insulating frame, the stator 21 includes a winding 23 and a stator lead wire 211, the stator lead wire 211 is electrically connected to the winding 23, the rotor 22 includes a rotor core 221 and a balancing block 222, the balancing block 222 is installed on the rotor core 221, the insulating frame includes a first insulating frame 11 and a second insulating frame 12, the first insulating frame 11 is connected to the stator 21, the second insulating frame 12 includes a wire block plate 121 and a mounting plate, the mounting plate is connected to the wire block plate 121, the second insulating frame 12 is installed on the first insulating frame 11 through the mounting plate, the upper end surface of the wire block plate 121 is higher than the upper end surface of the balancing block 222, so that the stator lead wire 211 is away from the balancing block 222, so that the stator lead wire 211 is away from the rotor 22, thereby reducing the risk of the stator lead wire 211 being scratched during the movement of the rotor 22, thereby improving the reliability and safety of the motor. The stator 21 further includes a stator core 212 , the winding 23 is wound on the stator core 212 , and the first insulating frame 11 is installed on the stator core 212 .

[0040] The balancing block 222 has the following specific functions in the motor: 1. Improving mechanical stability: The balancing block 222 can ensure that the axis of rotation of the rotor 22 is always maintained at a certain position during operation, reducing the mechanical vibration caused by centrifugal force. This helps to ensure the stability and reliability of the equipment operation, thereby improving the overall mechanical performance. 2. Prolonging the service life of the machine: The balancing block 222 can control the balance of the rotating machine, reduce the vibration and friction caused by imbalance, and reduce the wear of mechanical parts. By reducing mechanical vibration and friction, the service life of the machine can be significantly extended and the maintenance cost can be reduced. 3. Improving the bearing life of the rotor 22: The imbalance of the rotor 22 will cause the bearing to bear additional radial loads, accelerating the wear and damage of the bearing. As a balancing device, the balancing block 222 can reduce the load and wear of the rotating bearing, thereby extending the service life of the rotor 22 bearing. 4. Improving mechanical efficiency: During the operation of the machine, the role of the balancing block 222 can reduce the impact of centrifugal force on the machine and reduce energy loss. This helps to improve the operating efficiency of the machine and reduce energy consumption. 5. Reduce noise and vibration: The unbalanced rotor 22 will cause noise and vibration, which not only affects the working environment, but also may have a negative impact on the health of personnel. The balancing block 222 can effectively reduce these noise and vibrations and improve the comfort of the working environment.

[0041] Specifically, the height difference between the upper end surface of the wire baffle 121 and the balancing block 222 is h1, 015mm, the stability of the motor during operation is reduced. Therefore, by 0<h1≤15mm, the position of the balancing block 222 is reasonably set, which not only improves the stability of the motor during operation, but also reduces the risk of scratching the stator lead wire 211.<h1>

[0042] Furthermore, the rotor 22 also includes a rotor disc 223, which is a circular or approximately circular metal sheet designed to adjust the mass distribution of the rotor 22; it is mainly customized according to the unbalance amount of the rotor 22. It is mainly used to adjust the mass distribution of the rotor 22, so that the rotor 22 achieves dynamic balance during rotation, reduces vibration and noise, and thus improves the stability of the motor and reduces the noise during the operation of the motor.

[0043] It is understandable that in order to reduce the weight of the second insulating frame 12, the thickness of the wire blocking plate 121 will be reduced as much as possible. As a result, the structural strength of the wire blocking plate is relatively low. Therefore, in one embodiment, the wire blocking plate 121 is provided with reinforcing ribs 124; by providing the reinforcing ribs 124, the structural strength of the wire blocking plate is increased, and while ensuring the structural strength of the wire blocking plate, the weight of the second insulating frame 12 is also reduced.

[0044] In one embodiment, the first insulating frame 11 includes an inner wall 111, an outer wall 112 and insulating teeth 113, the inner wall 111 and the outer wall 112 are connected by the insulating teeth 113, the inner wall 111 and the outer wall 112 are both arranged in a ring shape, the mounting plate is installed on the outer wall 112, and the upper end surface of the wire blocking plate 121 is higher than the upper end surface of the inner wall 111, thereby reducing the risk of scratching the stator lead wire 211.

[0045] Specifically, the height difference between the upper end surface of the wire baffle 121 and the upper end surface of the inner wall 111 is h2, 0<h2≤10mm. It can be understood that if h2≤0, the inner wall 111 will be protruding from or flush with the wire baffle 121, thereby increasing the risk of the stator lead wire 211 being scratched during the movement of the rotor 22, thereby reducing the reliability and safety of the motor. If h2>10mm, although the distance between the upper end surface of the wire baffle 121 and the upper end surface of the inner wall 111 is too large, thereby reducing the space utilization rate of the insulation skeleton, thereby increasing the weight and size of the insulation skeleton and the motor, and thus not conducive to the miniaturization of the insulation skeleton and the motor; and when 0<h2≤10mm, while reducing the risk of the rotor 22 scratching the stator lead wire 211 during the movement, it also reduces the size and weight of the insulation skeleton, thereby facilitating the miniaturization of the insulation skeleton and the motor.

[0046] In one embodiment, the upper end surface of the winding 23 is higher than the upper end surface of the inner wall 111. This reduces the protruding portion of the winding 23, thereby reducing the risk of the winding 23 loosening or shifting during the operation of the motor.

[0047] Specifically, the height difference between the upper end surface of the winding 23 and the upper end surface of the inner wall 111 is h3, 0≤h3≤10mm. It can be understood that if h3<0, on the one hand, the winding 23 will directly protrude from the insulating skeleton, which will increase the risk of the winding 23 loosening or displacement during the operation of the motor, thereby reducing the stability and reliability of the motor. If h3>10mm, it indicates that there is a large waste of space between the insulating skeleton and the winding 23, which leads to low space utilization of the insulating skeleton, thereby increasing the size and weight of the insulating skeleton, and is not conducive to the miniaturization of the motor. Therefore, 0≤h3≤10mm not only improves the space utilization of the insulating skeleton, but also reduces the risk of the winding 23 loosening or displacement during the operation of the motor.

[0048] In one embodiment, the upper end surface of the outer wall 112 is higher than the upper end surface of the inner wall 111. It can be understood that the rotor 22 structure is located inside the inner wall 111. Therefore, by setting the upper end surface of the outer wall 112 higher than the upper end surface of the inner wall 111, the installation height of the second insulating frame 12 is increased, thereby reducing the risk of scratches on the stator lead wire 211.

[0049] Specifically, the height difference between the upper end surface of the outer wall 112 and the upper end surface of the inner wall 111 is h4, 3mm≤h4≤15mm. This further reduces the scratches on the stator lead wire 211 and increases the space utilization of the insulation frame, thereby reducing the size and weight of the insulation frame, which is beneficial to the miniaturization of the insulation frame and the motor.

[0050] In one embodiment, the inner wall 111 and the insulating teeth 113 are arranged at intervals, and the inner wall 111 and the insulating teeth 113 are arranged in a ring shape, and one inner wall 111 is arranged corresponding to one insulating tooth 113. The insulating tooth 113 is installed at the end of the stator tooth and is stacked with the insulating tooth 113. The outer wall 112 and two adjacent insulating teeth 113 are enclosed to form a first winding groove, and the stator yoke and two adjacent stator teeth are enclosed to form a second winding groove. The first winding groove and the second winding groove are connected and arranged oppositely. The winding 23 is wound on the stator yoke and the insulating teeth 113, and is located in the first winding groove and the second winding groove; by setting the inner wall 111, the winding 23 is firmly fixed on the stator teeth and the insulating teeth 113, preventing the winding 23 from loosening or displacement during the operation of the motor, thereby ensuring the normal operation of the motor.

[0051] In one embodiment, one of the outer wall 112 and the mounting plate is a snap-fit ​​protrusion 1121, and the other is a snap-fit ​​hole 122a, wherein the snap-fit ​​protrusion 1121 is connected to the snap-fit ​​hole 122a. By setting the installation mode of the first insulating frame 11 and the second insulating frame 12 as a snap-fit ​​connection mode, the installation and disassembly of the first insulating frame 11 and the second insulating frame 12 are convenient, and tool-free disassembly can be achieved. No additional materials such as screw fasteners are required during the installation process, so the installation of the snap-fit ​​position is low-cost. The installation process of the snap-fit ​​position is very simple, generally only one piercing action is required, and no rotational movement or product positioning work before installation is required, which is quick and simple; and the process of setting structures such as the snap-fit ​​protrusion 1121 and the snap-fit ​​hole 122a is mature, and its production and processing cost is low, thereby reducing the production and manufacturing cost of the insulating skeleton.

[0052] In one embodiment, the mounting plate includes a first mounting plate 122 and a second mounting plate 123 both connected to the wire blocking plate 121, at least one of the first mounting plate 122 and the second mounting plate 123 is provided with a snap-in hole 122a, the outer wall 112 is inserted between the first mounting plate 122 and the second mounting plate 123, and the snap-in protrusion 1121 is snapped into the snap-in hole 122a. By limiting the positions of the first mounting plate 122 and the second mounting plate 123 on both sides of the outer wall 112, and then by snap-in connection of the snap-in protrusion 1121 and the snap-in hole 122a, the connection strength between the first insulating frame 11 and the second insulating frame 12 is increased, thereby increasing the stability of the second insulating frame 12, and facilitating the installation and disassembly of the first insulating frame 11 and the second insulating frame 12.

[0053] Furthermore, there are multiple snap-in protrusions 1121 and snap-in holes 122a. By setting up multiple snap-in protrusions 1121 and snap-in holes 122a, the connection strength between the first insulating frame 11 and the second insulating frame 12 is increased. At the same time, the outer peripheral surface of the outer wall 112 is provided with multiple snap-in protrusions 1121 at intervals, and the number of snap-in holes 122a is less than the number of snap-in protrusions 1121, so that the second insulating frame 12 can select the installation position of the second insulating frame 12 according to the position of the stator lead-out wire 211, thereby improving the flexibility and applicability of the second insulating frame 12.

[0054] Furthermore, a guiding slope is provided on the snap-in protrusion 1121, which facilitates the snap-in protrusion 1121 to be snapped into the snap-in hole 122a, thereby improving the installation efficiency of the first insulating frame 11 and the second insulating frame 12, and also reduces the bending deformation of the snap-in hole 122a on the first mounting plate 122 and / or the second mounting plate 123 when snapping into the snap-in protrusion 1121, thereby reducing the risk of breakage of the first mounting plate 122 and the second mounting plate 123, thereby improving the service life of the insulating frame.

[0055] Reference Figure 5 and Figure 6In one embodiment, the interval between the first mounting plate 122 and the second mounting plate 123 is s1, the thickness of the outer wall 112 is w, and the gap between the first mounting plate 122 or the second mounting plate 123 and the outer wall 112 is s2 = (s1-w) / 2, 0.1mm≤s2≤0.5mm. It can be understood that when the second insulating frame 12 is inserted into the outer wall 112, the first mounting plate 122 and / or the second mounting plate 123 provided with the snap-in hole 122a will produce a certain bending deformation, so that the snap-in protrusion 1121 can be smoothly snapped into the snap-in hole 122a; therefore, if s2 is less than 0.1mm, it indicates that the gap between the first mounting plate 122 or the second mounting plate 123 and the outer wall 112 is too small, so that the first mounting plate 122 and / or the second mounting plate 123 need to produce a larger bending deformation to make the snap-in protrusion 1121 snap into the snap-in hole 122a, thereby increasing the risk of breakage of the first mounting plate 122 and / or the second mounting plate 123, thereby reducing the service life of the insulating frame. If s2>0.5mm, the gap between the first mounting plate 122 and / or the second mounting plate 123 and the outer wall 112 will be larger. Although it is convenient for the snap-in protrusion 1121 to snap into the snap-in hole 122a, it will cause a certain amount of shaking in the installation between the first mounting plate 122 and / or the second mounting plate 123 and the outer wall 112, thereby reducing the stability of the second insulating frame 12. Therefore, by setting 0.1mm≤s2≤0.5mm, although there is a certain amount of shaking gap for the second insulating frame 12, it does not affect the stability of the second insulating frame 12, thereby facilitating the snap-in protrusion 1121 to snap into the snap-in hole 122a, reducing the risk of the first mounting plate 122 and / or the second mounting plate 123 breaking, and also reducing the amplitude of shaking of the first mounting plate 122 and / or the second mounting plate 123, thereby improving the stability and reliability of the second insulating frame 12.

[0056] At the same time, it should be noted that s2=(s1-w) / 2 does not mean that the gap between the first mounting plate 122 and the outer wall 112 is equal to the gap between the second mounting plate 123 and the outer wall 112. It can be that the first mounting plate 122 is in contact with the outer wall 112, and then the gap value between the second mounting plate 123 and the outer wall 112 is (s1-w); it can also be that the second mounting plate 123 is in contact with the outer wall 112, and then the gap value between the first mounting plate 122 and the outer wall 112 is (s1-w). These will not be discussed one by one here.

[0057] The utility model also proposes a compressor, which includes a motor. The specific structure of the motor refers to the above embodiment. Since the compressor in the technical solution of the utility model adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here one by one.

[0058] The utility model also proposes a refrigeration device, which includes a compressor. The specific structure of the compressor refers to the above embodiment. The refrigeration device can be divided into compression refrigeration equipment, absorption refrigeration equipment, steam injection refrigeration equipment, heat pump refrigeration equipment and electric heating refrigeration device. The refrigeration device is mainly composed of a compressor, an expansion valve, an evaporator, a condenser and accessories, and pipelines. Such as refrigerators, air conditioners, etc. Since the compressor in the technical solution of the utility model adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0059] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A motor, characterized in that: include: A stator, the stator comprising stator lead wires, the stator lead wires being electrically connected to the windings; A rotor, the rotor comprising a rotor core and a balancing block, wherein the balancing block is mounted on the rotor core; as well as An insulating frame, the insulating frame includes a first insulating frame and a second insulating frame, the first insulating frame is connected to the stator, the second insulating frame includes a wire blocking plate and a mounting plate, the mounting plate is connected to the wire blocking plate, the second insulating frame is mounted on the first insulating frame through the mounting plate, the upper end surface of the wire blocking plate is higher than the upper end surface of the balancing block, so that the stator lead wire is away from the balancing block.

2. The motor according to claim 1, characterized in that The height difference between the upper end surface of the wire blocking plate and the balancing block is h1, 0<h1≤15mm.

3. The motor according to claim 1, characterized in that The line blocking plate is provided with reinforcing ribs.

4. The motor according to claim 1, characterized in that The first insulating frame includes an inner wall, an outer wall and insulating teeth, the inner wall and the outer wall are connected by the insulating teeth, the inner wall and the outer wall are both arranged in a ring shape, the mounting plate is installed on the outer wall, and the upper end surface of the wire blocking plate is higher than the upper end surface of the inner wall.

5. The motor according to claim 4, characterized in that The height difference between the upper end surface of the baffle plate and the upper end surface of the inner wall is h2, 0<h2≤10mm.

6. The motor according to claim 4, characterized in that The upper end surface of the winding is higher than the upper end surface of the inner wall.

7. The motor according to claim 6, characterized in that A height difference between the upper end surface of the winding and the upper end surface of the inner wall is h3, 0≤h3≤10mm.

8. The motor according to claim 4, characterized in that The upper end surface of the outer wall is higher than the upper end surface of the inner wall.

9. The motor according to claim 8, characterized in that The height difference between the upper end surface of the outer wall and the upper end surface of the inner wall is h4, 3mm≤h4≤15mm.

10. The motor according to claim 4, characterized in that One of the outer wall and the mounting plate is a clamping protrusion, and the other is a clamping hole, and the clamping protrusion is connected to the clamping hole.

11. The motor according to claim 10, characterized in that The mounting plate includes a first mounting plate and a second mounting plate both connected to the wire blocking plate, at least one of the first mounting plate and the second mounting plate is provided with a snap-in hole, the outer wall is inserted between the first mounting plate and the second mounting plate, and the snap-in protrusion is snapped into the snap-in hole.

12. The motor according to claim 11, characterized in that The interval between the first mounting plate and the second mounting plate is s1, the thickness of the outer wall is w, and the gap between the first mounting plate or the second mounting plate and the outer wall is s2=(s1-w) / 2, 0.1mm≤s2≤0.5mm.

13. A compressor, characterized in that: Comprising a motor as claimed in any one of claims 1 to 12.

14. A refrigeration device, characterized in that: Comprising a compressor as claimed in claim 13.

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