Punching sheet assembly, motor, compressor and air conditioning system

Abstract

The utility model discloses a punching sheet assembly, a motor, a compressor and an air conditioning system, the punching sheet assembly comprises a stator punching sheet, the stator punching sheet is provided with a yoke portion arranged in a surrounding manner, the peripheral wall of the yoke portion is provided with a plurality of trimming grooves at intervals, and the sum of projection areas of the plurality of trimming grooves in the thickness direction is S1; the rotor punching sheet is arranged inside the stator punching sheet in the radial direction, the rotor punching sheet is provided with a plurality of through-flow holes which are arranged around the center of the rotor punching sheet at intervals, the sum of the projection areas of the plurality of through-flow holes in the thickness direction is S2, and S1 and S2 meet the condition that S1 / S2 is larger than 0.65 and smaller than 0.95. According to the punching sheet assembly provided by the utility model, the sizes of the trimming grooves and the sizes of the through-flow holes are optimally designed, so that the structures of the stator punching sheet and the rotor punching sheet can reduce the operation energy consumption of a motor, improve the operation efficiency of the motor and ensure the efficient operation of the compressor.

Description

Technical Field

[0001] The utility model relates to the field of motors, in particular to a punching sheet assembly, a motor, a compressor and an air conditioning system. Background Art

[0002] In the related art, the motor is provided with a stator and a rotor, and the stator and the rotor are generally formed by stacking stator punchings and rotor punchings, and the forms of the stator punchings and the rotor punchings affect the working efficiency of the motor. In the prior art, a trimming groove structure for circulating coolant is provided on the outside of the stator punchings, and flow holes are provided on the rotor punchings. How to set the shape and size of the trimming grooves and the shape and size of the flow holes on the rotor punchings will affect the final working energy efficiency of the motor. Therefore, the form of the trimming grooves on the rotor punchings and the setting form of the flow holes on the rotor have become technical problems to be solved in this field. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a punching sheet assembly. According to the punching sheet assembly of the utility model, by optimizing the size of the trimming groove and the size of the through-flow hole, the structure of the stator punching sheet and the rotor punching sheet can reduce the energy consumption of the motor operation, improve the motor operation efficiency, and ensure the efficient operation of the compressor.

[0004] The utility model also provides a motor with the punching sheet assembly.

[0005] The utility model also provides a compressor having the motor.

[0006] The utility model also provides an air conditioning system with the compressor.

[0007] According to the utility model, the punching sheet assembly includes: a stator punching sheet, on which a yoke is formed, and a plurality of trimming grooves are arranged at intervals on the outer peripheral wall of the yoke, and the sum of the areas of the plurality of trimming grooves projected in the thickness direction is S1; a rotor punching sheet, which is arranged radially inside the stator punching sheet, and on which a plurality of flow holes are arranged at intervals around the center of the rotor punching sheet, and the sum of the areas of the plurality of flow holes projected in the thickness direction is S2, and S1 and S2 satisfy: 0.65<S1 / S2<0.95.

[0008] According to the utility model, the punching sheet assembly includes a stator punching sheet and a rotor punching sheet, a yoke is formed on the stator punching sheet, and a plurality of trimming grooves are arranged on the outer peripheral wall of the yoke. By arranging a plurality of trimming grooves on the outer periphery of the yoke, the lubricating oil flows into the gap between the stator punching sheet and the rotor through the trimming grooves to reduce friction. At the same time, the lubricating oil flows through the trimming grooves to take away heat, realize heat dissipation of the motor, and ensure stable operation of the motor. The sum of the projected areas of the plurality of trimming grooves in the thickness direction is S1; the rotor punching sheet is provided with a plurality of flow holes arranged at intervals around the center of the rotor punching sheet to improve the operation stability of the motor. The sum of the projected areas of the plurality of flow holes in the thickness direction is S2. By designing S1 and S2 to satisfy 0.65<S1 / S2<0.95, the structure of the stator punching sheet and the rotor punching sheet can effectively reduce the energy consumption of the motor, improve the energy efficiency of the motor, and ensure the efficient and stable operation of the motor compressor.

[0009] According to some embodiments of the utility model, a tooth portion is formed on the stator punching sheet, the tooth portion protrudes radially inward along the yoke portion and is arranged at circumferential intervals, a stator slot is formed between two adjacent tooth portions and the yoke portion, and a slot bottom of the stator slot is formed on the yoke portion; wherein, each tooth portion is formed with a tooth shoulder protruding on both sides of the tooth portion in the width direction, a notch of the stator slot is defined between two adjacent tooth shoulders, and a minimum distance between two adjacent tooth shoulders is W; the number of the stator slots is Q, Q=15, the distance between the surface of the tooth shoulder facing the rotor punching sheet and the slot bottom is L, and satisfies: 2.6<Q*(W*L) / S1<3.5.

[0010] According to some embodiments of the present invention, 2.3 mm ≤ W ≤ 3.6 mm.

[0011] According to some embodiments of the present invention, the radius of the stator punching sheet is R, and satisfies: 42.5mm≤R≤56mm.

[0012] According to some embodiments of the present invention, a plurality of permanent magnet slots spaced apart in the circumferential direction are formed on the rotor punching sheet, and a permanent magnet is disposed in each of the permanent magnet slots.

[0013] According to some embodiments of the present invention, the permanent magnet slot can be configured as a V-shaped slot, a U-shaped slot, a W-shaped slot, a straight slot or an I-shaped slot.

[0014] The following briefly describes a motor according to another embodiment of the present invention.

[0015] According to the utility model, the motor includes: a shell, a stator and a rotor, the stator and the rotor are formed by stacking a sheet assembly and accommodated in the shell, the sheet assembly is constructed as the sheet assembly described in any one of the above embodiments, wherein the stator is fixed inside the shell, the shell stably supports the stator, the rotor is accommodated inside the stator, the rotor and the stator cooperate with each other so that the rotor can rotate relative to the stator, thereby realizing the conversion of electrical energy into mechanical energy, the stator and the rotor in the motor of the utility model are formed by stacking the sheet assembly described in any one of the above embodiments, and the sheet assembly is optimized to achieve smaller losses during operation of the motor of the utility model and higher energy efficiency.

[0016] The following briefly describes a compressor according to another embodiment of the present invention.

[0017] The compressor according to the utility model has the motor described in any one of the above embodiments. Since the compressor according to the utility model has the motor described in any one of the above embodiments, the energy efficiency of the motor is higher, and the compressor according to the utility model has higher energy efficiency and runs stably.

[0018] The following briefly describes an air conditioning system according to another embodiment of the present invention.

[0019] The air-conditioning system according to the utility model has the compressor described in the above embodiment. Since the air-conditioning system according to the utility model has the compressor described in the above embodiment, the air-conditioning system of the utility model has a better cooling effect and lower energy consumption due to the higher energy efficiency of the compressor.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1 It is a structural schematic diagram of a punching sheet assembly according to an embodiment of the utility model;

[0023] Figure 2 It is a structural schematic diagram of a punching sheet assembly according to an embodiment of the utility model;

[0024] Figure 3 This is a comparison diagram of energy efficiency between a punching assembly according to an embodiment of the utility model and a conventional structure at the same rotation speed;

[0025] Figure 4The figure is a comparison diagram of energy efficiency between a punching sheet assembly according to an embodiment of the utility model and a conventional structure at another same rotation speed.

[0026] Reference numerals:

[0027] Punching sheet assembly 1;

[0028] Stator punching sheet 11, yoke 111, trimming groove 1111, tooth portion 112, tooth shoulder 1121, stator slot 113;

[0029] Rotor punching 12 , flow holes 121 , and permanent magnet slots 122 . DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0031] In the related art, the motor is provided with a stator and a rotor, and the stator and the rotor are generally formed by stacking stator punchings and rotor punchings, and the forms of the stator punchings and the rotor punchings affect the working efficiency of the motor. In the prior art, a trimming groove structure for circulating coolant is provided on the outside of the stator punchings, and flow holes are provided on the rotor punchings. How to set the shape and size of the trimming grooves and the shape and size of the flow holes on the rotor punchings will affect the final working energy efficiency of the motor. Therefore, the form of the trimming grooves on the rotor punchings and the setting form of the flow holes on the rotor have become technical problems to be solved in this field.

[0032] Reference below Figure 1-Figure 4 A punching sheet assembly according to an embodiment of the utility model is described.

[0033] According to the utility model, the punching sheet assembly 1 includes a stator punching sheet 11 and a rotor punching sheet 12. The stator punching sheet 11 is formed with a circumferentially arranged yoke 111. The outer peripheral wall of the yoke 111 is provided with a plurality of trimming grooves 1111 at intervals. The sum of the areas of the plurality of trimming grooves 1111 projected in the thickness direction is S1. The rotor punching sheet 12 is arranged radially inside the stator punching sheet 11. The rotor punching sheet 12 is provided with a plurality of flow holes 121 arranged at intervals around the center of the rotor punching sheet 12. The sum of the areas of the plurality of flow holes 121 projected in the thickness direction is S2. S1 and S2 satisfy: 0.65<S1 / S2<0.95.

[0034] like Figure 1 and Figure 2As shown, a circumferential yoke 111 is formed on the stator punching sheet 11, and a plurality of trimming grooves 1111 are arranged at intervals on the outer peripheral wall of the yoke 111. When the stator punching sheet 11 is assembled, the yoke 111 between two adjacent trimming grooves 1111 cooperates with the motor component to ensure the stable installation of the stator punching sheet 11, and the plurality of trimming grooves 1111 arranged on the outer peripheral wall of the yoke 111 cooperate with the motor component. When the motor is running, the lubricating oil can flow into the gap between the stator punching sheet 11 and the rotor through these trimming grooves 1111 to form a lubricating film, thereby reducing the friction and wear between the stator punching sheet 11 and the rotor. At the same time, the trimming grooves 1111 can also enhance the heat dissipation performance of the motor. Since the lubricating oil will take away the heat inside the motor during the flow process, the lubricating oil flowing in through the trimming grooves 1111 Lubricating oil can effectively reduce the temperature inside the motor and ensure that the motor maintains stable performance during long-term operation. By reasonably designing parameters such as the shape, number and position of the trimming grooves 1111, the magnetic flux distribution of the motor can be adjusted, thereby optimizing the electromagnetic performance of the motor, which helps to improve the overall operating efficiency and performance of the motor. In the scheme of the utility model, the sum of the projected areas of the multiple trimming grooves 1111 in the thickness direction is designed to be S1, wherein the projected areas of the multiple trimming grooves 1111 in the thickness direction may be the same or different, and S1 is the sum of the projected areas of the multiple trimming grooves 1111 in the thickness direction. For example, the projected areas of the multiple trimming grooves 1111 in the thickness direction are S11, S12, S13..., respectively, then S1=S11+S12+S13+...

[0035] The rotor sheet 12 is arranged radially inside the stator sheet 11, and a plurality of through holes 121 are arranged around the center of the rotor sheet 12 at intervals. Since the rotor sheet 12 is an important component in the motor, its quality has a great influence on the performance of the motor. By arranging a plurality of through holes 121 on the rotor sheet 12, the use of the material of the rotor sheet 12 can be significantly reduced, thereby reducing the weight of the rotor sheet 12, further improving the working efficiency and stability of the motor. In addition, during the long-term operation of the motor, the rotor sheet 12 is easily damaged by fatigue and The influence of thermal damage, thereby shortening the service life of the motor, the design of the flow hole 121 can reduce the stress concentration of the rotor punching 12, alleviate its stress condition, thereby improving its strength and durability. In addition, the flow hole 121 also helps to improve the operating efficiency and stability of the motor. By reasonably designing the shape and number of the rotor punching 12, combined with the layout of the flow hole 121, the rotor inertia of the motor can be reduced, and the dynamic response speed and torque density of the motor can be improved. This enables the motor to respond to control signals more quickly during startup, acceleration and deceleration, and achieve smoother and more efficient operation.

[0036] In the scheme of the utility model, the sum of the projected areas of the plurality of flow holes 121 in the thickness direction is designed to be S2, and the relationship between the sum of the projected areas S1 of the plurality of cutting grooves 1111 in the thickness direction and the sum of the projected areas S2 of the plurality of flow holes 121 in the thickness direction satisfies: 0.65<S1 / S2<0.95. Through testing, it is found that by optimizing the design of the sum of the projected areas S1 of the plurality of cutting grooves 1111 in the thickness direction and the sum of the projected areas S2 of the plurality of flow holes 121 in the thickness direction, the value of S1 / S2 is within a preset range, thereby reducing the operating energy consumption of the motor, improving the operating efficiency of the motor, and improving the operating efficiency of the compressor.

[0037] According to the utility model, the punching sheet assembly 1 includes a stator punching sheet 11 and a rotor punching sheet 12. A yoke 111 is formed on the stator punching sheet 11. A plurality of trimming grooves 1111 are arranged on the outer peripheral wall of the yoke 111. By arranging a plurality of trimming grooves 1111 on the outer periphery of the yoke 111, the lubricating oil flows into the gap between the stator punching sheet 11 and the rotor through the trimming grooves 1111, thereby reducing the friction between the stator punching sheet 11 and the rotor. At the same time, the lubricating oil flows through the trimming grooves 1111 to take away the heat, thereby realizing the heat dissipation of the motor and ensuring the stability of the motor. During stable operation, the sum of the projected areas of the plurality of trimming grooves 1111 in the thickness direction is S1; the rotor punching 12 is provided with a plurality of flow holes 121 arranged at intervals around the center of the rotor punching 12 to improve the stability of motor operation, and the sum of the projected areas of the plurality of flow holes 121 in the thickness direction is S2. By designing S1 and S2 to satisfy 0.65<S1 / S2<0.95, the structure of the stator punching 11 and the rotor punching 12 can effectively reduce the energy consumption of the motor operation, improve the motor operation efficiency, and ensure the efficient operation of the compressor.

[0038] Among them, Figure 3 and Figure 4 As shown in the figure, the ordinate is the output power of the motor at the corresponding speed. The solution of the present invention optimizes the sum S1 of the areas of the peripheral trimming grooves 1111 of the stator punching sheet 11 and the sum S2 of the areas of the flow holes 121 on the rotor punching sheet 12 to meet 0.65<S1 / S2<0.95, so that the output power of the punching assembly 1 of the present invention at the same speed is higher than that of the punching assembly of conventional structure.

[0039] According to some embodiments of the utility model, a tooth portion 112 is formed on the stator punching sheet 11, the tooth portion 112 protrudes radially inward along the yoke portion 111 and is arranged at intervals in the circumferential direction, a stator slot 113 is formed between two adjacent tooth portions 112 and the yoke portion 111, and a slot bottom of the stator slot 113 is formed on the yoke portion 111; wherein, each tooth portion 112 is formed with a tooth shoulder 1121 protruding on both sides of the width direction of the tooth portion 112 at the end portion, and a notch of the stator slot 113 is defined between two adjacent tooth shoulders 1121, and the minimum distance between two adjacent tooth shoulders 1121 is W; the number of stator slots 113 is Q, Q=15, the distance between the surface of the tooth shoulder 1121 facing the rotor punching sheet 12 and the slot bottom is L, and satisfies: 2.6<Q*(W*L) / S1<3.5.

[0040] like Figure 1 and Figure 2 As shown, a tooth portion 112 is formed on the stator punching sheet 11, and the tooth portion 112 protrudes radially inward along the yoke portion 111 and is arranged at intervals in the circumferential direction. A stator slot 113 is formed between two adjacent tooth portions 112, and a winding is accommodated in the stator slot 113. During the operation of the motor, the current passes through the stator winding to generate a magnetic field, and this magnetic field interacts with the rotor magnetic field to drive the rotor to rotate. The tooth portion 112 of the stator punching sheet 11 is an important part of this magnetic circuit. The tooth portion 112 determines the distribution and intensity of the magnetic field. By optimizing the tooth portion 112 and the stator slot 113, the efficiency of the motor can be effectively improved. Among them, the slot width of the stator slot 113 directly affects the motor. Electromagnetic performance and operating efficiency. In the scheme of the utility model, the tooth shoulders 1121 of two adjacent tooth portions 112 define a slot of the stator slot 113, and the distance between adjacent tooth shoulders 1121 gradually decreases in the extension direction toward the slot bottom, which helps to reduce magnetic resistance and increase magnetic flux density. The minimum distance between two adjacent tooth shoulders 1121 is W, the distance between the surface of the tooth shoulder 1121 facing the rotor punching sheet 12 and the slot bottom is L, the number of stator slots 113 is Q, and satisfies: 2.6<Q*(W*L) / S1<3.5. Through the above arrangement, the slot filling rate of the stator slot 113 can be effectively improved, the motor operating loss can be reduced, and the motor operating efficiency can be improved.

[0041] In an embodiment of the utility model, the number Q of the stator slots 113 is 15, and the motor is constructed as a 15-slot 10-pole structure. The design of this motor can provide a higher power density and is suitable for high-speed usage scenarios. In addition, the solution of the utility model optimizes the design of the stator punchings 11 and the rotor punchings 12 in the 15-slot 10-pole motor, which can maximize the energy efficiency of the motor, thereby improving the energy efficiency of the compressor.

[0042] According to some embodiments of the present invention, 2.3 mm ≤ W ≤ 3.6 mm.

[0043] Specifically, the slot width of the stator slot 113 directly affects the electromagnetic performance and efficiency of the motor. In the solution of the utility model, the slot of the stator slot 113 is defined between two adjacent tooth shoulders 1121, and the minimum distance W between two adjacent tooth shoulders 1121 satisfies 2.3mm≤W≤3.6mm, which helps to reduce magnetic resistance, increase magnetic flux density, and enable the motor to generate greater torque at the same current, thereby improving the energy efficiency of the motor.

[0044] According to some embodiments of the present invention, the radius of the stator punching sheet 11 is R, and satisfies: 42.5 mm ≤ R ≤ 56 mm.

[0045] Specifically, the radius of the stator punching sheet 11 will affect the size and position distribution of the tooth portion 112 and the stator slot 113. Appropriate size design can optimize the distribution of magnetic flux and current, thereby reducing the loss in the motor. The solution of the utility model reduces the loss of motor operation and improves the energy efficiency of the motor by designing the radius R of the stator punching sheet 11 to satisfy 42.5mm≤R≤56mm. At the same time, it ensures that the stator punching sheet 11 has a large heat dissipation area, which is beneficial to the dissipation of heat inside the motor, improves the heat dissipation performance of the motor, and ensures stable operation of the motor.

[0046] According to some embodiments of the present invention, a plurality of permanent magnet slots 122 spaced apart in the circumferential direction are formed on the rotor punching 12 , and a permanent magnet is disposed in each of the permanent magnet slots 122 .

[0047] like Figure 1 and Figure 2 As shown, a plurality of permanent magnet slots 122 are formed on the rotor punching 12 and are spaced apart in the circumferential direction. Each permanent magnet slot 122 is suitable for accommodating a permanent magnet. The plurality of permanent magnet slots 122 are evenly arranged in the circumferential direction, so that the magnetic field generated by the permanent magnet is more uniform, thereby improving the efficiency and performance of the motor. In the scheme of the present utility model, the number of the permanent magnet slots 122 is 10, and the motor is constructed as a 15-slot 10-pole structure. This motor design can provide a higher power density, so that it can generate greater power at the same volume or weight. At the same time, by optimizing the setting of this motor, the motor energy efficiency can be maximized.

[0048] According to some embodiments of the present invention, the permanent magnet slot 122 may be configured as a V-shaped slot, a U-shaped slot, a W-shaped slot, a straight slot, or an I-shaped slot.

[0049] like Figure 1 and Figure 2As shown, in an embodiment of the utility model, the permanent magnet slot 122 is constructed as a straight slot, which is conducive to forming a relatively uniform magnetic field distribution and ensuring stable operation of the motor. The structure of the straight slot is relatively simple, which is conducive to reducing the manufacturing cost of the motor. At the same time, this design is also convenient for automated production, improving production efficiency and product quality. Of course, the permanent magnet slot 122 can also be constructed into a variety of shapes such as a V-shaped slot, a U-shaped slot, a W-shaped slot or an I-shaped slot. Different slot shapes of the permanent magnet slot 122 can optimize the uniformity and concentration of the magnetic field, thereby improving the performance and efficiency of the motor. The slot shape of the permanent magnet slot 122 can be selected and optimized according to the specific needs and performance requirements of the motor.

[0050] The motor according to the utility model is briefly described below.

[0051] The motor according to the utility model includes a housing, a stator and a rotor, the stator and the rotor are formed by stacking a punching assembly 1 and are accommodated in the housing, and the punching assembly 1 is constructed as the punching assembly 1 described in any one of the above embodiments. Among them, the stator is fixed inside the housing, the housing stably supports the stator, the rotor is accommodated inside the stator, and the rotor and the stator cooperate with each other so that the rotor can rotate relative to the stator, thereby realizing the conversion of electrical energy into mechanical energy. The stator and the rotor in the motor of the utility model are formed by stacking the punching assembly 1 described in any one of the above embodiments. By optimizing the design of the punching assembly 1, the loss of the motor of the utility model during operation is smaller and the motor operation efficiency is higher.

[0052] According to some embodiments of the present invention, a plurality of stator slots 113 arranged at intervals in the circumferential direction are formed on the stator, and windings are accommodated in the stator slots 113 .

[0053] Specifically, a plurality of stator slots 113 are formed on the stator, and windings are accommodated in the stator slots 113. The stator is composed of a plurality of stator punching sheets 11 stacked together, and the rotor is composed of a plurality of rotor punching sheets 12 stacked together. When the windings are energized, a rotating magnetic field is generated, thereby driving the rotor to rotate. The stator and rotor in the motor of the utility model are composed of the punching sheet assemblies 1 described in any one of the above embodiments stacked together, so that the motor has higher energy efficiency and more stable operation.

[0054] The compressor according to the present utility model is briefly described below.

[0055] The compressor according to the utility model has the motor described in any one of the above embodiments. Since the compressor according to the utility model has the motor described in any one of the above embodiments, the energy efficiency of the motor is higher, and the compressor according to the utility model has higher energy efficiency and runs stably.

[0056] The air conditioning system according to the utility model is briefly described below.

[0057] The air-conditioning system according to the utility model has the compressor described in the above embodiment. Since the air-conditioning system according to the utility model has the compressor described in the above embodiment, the air-conditioning system of the utility model has a better cooling effect and lower energy consumption due to the higher energy efficiency of the compressor.

[0058] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0059] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0060] In the description of the present invention, "plurality" means two or more.

[0061] In the description of the present invention, a first feature being “above” or “below” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact but are in contact with each other via another feature therebetween.

[0062] In the description of the present invention, a first feature “above”, “over” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0063] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0064] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A punching assembly, characterized in that: include: A stator punching sheet, wherein a yoke portion is formed on the stator punching sheet, and a plurality of trimming grooves are arranged at intervals on the outer peripheral wall of the yoke portion, and the sum of the areas of the plurality of trimming grooves projected in the thickness direction is S1; The rotor punching is arranged radially inside the stator punching, and the rotor punching is provided with a plurality of flow holes arranged at intervals around the center of the rotor punching, the sum of the areas of the plurality of flow holes projected in the thickness direction is S2, and the S1 and the S2 satisfy: 0.65<S1 / S2<0.

95.

2. The punching sheet assembly according to claim 1, characterized in that: The stator punching sheet is formed with teeth, the teeth protrude radially inwardly along the yoke and are arranged at intervals in the circumferential direction, a stator slot is formed between two adjacent teeth and the yoke, and a slot bottom of the stator slot is formed on the yoke; Among them, the end of each tooth portion is formed with tooth shoulders protruding on both sides of the width direction of the tooth portion, and the slot of the stator slot is defined between two adjacent tooth shoulders, and the minimum distance between two adjacent tooth shoulders is W; the number of stator slots is Q, Q=15, the distance between the surface of the tooth shoulder facing the rotor punching and the bottom of the slot is L, and satisfies: 2.6<Q*(W*L) / S1<3.

5.

3. The punching sheet assembly according to claim 2, characterized in that: 2.3mm≤W≤3.6mm.

4. The punching sheet assembly according to claim 1, characterized in that: The radius of the stator punching sheet is R, and satisfies: 42.5mm≤R≤56mm.

5. The punching sheet assembly according to claim 1, characterized in that: The rotor punching sheet is formed with a plurality of permanent magnet slots spaced apart in the circumferential direction, and a permanent magnet is disposed in each of the permanent magnet slots.

6. The punching sheet assembly according to claim 5, characterized in that: The permanent magnet slot can be configured as a V-shaped slot, a U-shaped slot, a W-shaped slot, a straight slot or an I-shaped slot.

7. A motor, characterized in that: include: case; A stator and a rotor, wherein the stator and the rotor are formed by stacking a sheet assembly and are accommodated in the housing, and the sheet assembly is constructed as the sheet assembly described in any one of claims 1-6.

8. The motor according to claim 7, characterized in that The stator is formed with a plurality of stator slots spaced apart in a circumferential direction, and windings are accommodated in the stator slots.

9. A compressor, characterized in that: A motor comprising any one of claims 7-8.

10. An air conditioning system, characterized in that: Comprising the compressor as claimed in claim 9.

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