Motor, compressor with same and air conditioning equipment

Abstract

The utility model discloses a motor, and a compressor and an air conditioning device having the same, the motor comprises a stator core, the stator core is provided with a through hole and N first accommodating grooves, the first accommodating grooves are communicated with the through hole through first ports, and the width of the first ports is M; the rotor core is rotatably arranged in the through hole, P second accommodating grooves are formed in the rotor core, a first through groove is formed between every two adjacent second accommodating grooves, the area of each first through groove is S, and GCD (N, P) * M / S is larger than or equal to 0.75 / mm and smaller than or equal to 0.85 / mm. According to the motor provided by the embodiment of the utility model, by controlling the area of the first through groove, the space occupied by the first through groove on the rotor core is further controlled, so that the first through groove can better reduce harmonic waves of a space magnetic field, inhibit armature reaction and reduce iron loss of the motor, and the saturation degree of the motor is further fully improved; and the overload capacity of the motor is improved, so that the motor efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, and in particular to a motor and a compressor and air-conditioning equipment having the same. Background Art

[0002] With the rapid development of the economy and the improvement of people's living standards, people's demand for high efficiency is increasing. How to optimize the design of motors to effectively reduce losses and improve efficiency has become a design highlight for achieving motor efficiency. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a motor that controls the area of ​​a first through-slot, and thereby the space occupied by the first through-slot on the rotor core, so that the first through-slot can effectively reduce harmonics of the spatial magnetic field, suppress armature reaction, and reduce iron loss in the motor, thereby fully improving the motor's saturation level and enhancing the motor's overload capacity, thereby improving the motor's efficiency.

[0004] The utility model also provides a compressor having the motor.

[0005] The utility model also provides an air-conditioning device having the compressor.

[0006] According to the motor of the embodiment of the present invention, by controlling the area of ​​the first through-slot, and thus controlling the space occupied by the first through-slot on the rotor core, the first through-slot can better reduce the harmonics of the spatial magnetic field, suppress the armature reaction, reduce the iron loss of the motor, and thus fully improve the saturation degree of the motor, enhance the overload capacity of the motor, thereby achieving an improvement in the efficiency of the motor.

[0007] According to an embodiment of the first aspect of the present invention, the motor includes: a stator core, the stator core is formed with a through hole and N first accommodating slots, the first accommodating slots are used to accommodate stator windings, the first accommodating slots are connected to the through hole through a first opening, and the width of the first opening is M; the rotor core is rotatably arranged in the through hole, and the rotor core is provided with P second accommodating slots, the second accommodating slots are used to accommodate permanent magnets, a first through slot is provided between two adjacent second accommodating slots, the area of ​​the first through slot is S, wherein 0.75 / mm≤GCD(N, P)*M / S≤0.85 / mm.

[0008] In addition, the motor according to the above embodiment of the present invention may also have the following additional technical features:

[0009] According to some embodiments of the present invention, S≥11mm 2 .

[0010] According to some embodiments of the present invention, the radius of the stator core is D1, and the radius of the through hole is D2, satisfying: 0.52≤D2 / D1≤0.6.

[0011] According to some embodiments of the present invention, the radius of the through hole is D2, which satisfies 0.13≤2*arcsin[(M / 2*D2) / (π / N)]≤0.21.

[0012] According to some embodiments of the present invention, N / P=3 / 2.

[0013] According to some embodiments of the present invention, N first accommodating slots are arranged at intervals along the circumference of the stator core; and / or, P second accommodating slots are arranged at intervals along the circumference of the rotor core.

[0014] According to some embodiments of the present invention, the second accommodating slot includes a first slot portion. In the radial direction of the rotor core, two adjacent first slot portions of two adjacent second accommodating slots extend outward toward each other, and the first through slot is located between the adjacent first slot portions of the two adjacent second accommodating slots.

[0015] In the radial direction of the rotor core, the outer edge of the first through slot is the first edge, the inner edge of the first through slot is the second edge, the length of the first edge is L1, and the length of the second edge is L2, where L1<L2.

[0016] According to some optional embodiments of the present invention, the first edge is an arc or a straight line; and / or the second edge is a straight line or an arc.

[0017] According to some optional embodiments of the present invention, the first through groove also includes a first connecting edge and a second connecting edge, the first connecting edge connects one end of the first edge and one end of the second edge, and the second connecting edge connects the other end of the first edge and the other end of the second edge, wherein the first connecting edge is a straight line or an arc, and the second connecting edge is a straight line or an arc.

[0018] According to some optional embodiments of the present invention, the second accommodating groove includes two first groove portions and a second groove portion, the first groove portion extends along the radial direction of the rotor core, and in the radial direction of the rotor core, the two first groove portions of the second accommodating groove extend outward in a direction away from each other, and the second groove portion connects the inner ends of the two first groove portions.

[0019] According to some embodiments of the present invention, at least one second through slot is further provided on a side of the accommodating slot close to the outer edge of the rotor core.

[0020] According to some optional embodiments of the present invention, the second through-groove is a rectangular groove; or, the second through-groove includes a plurality of connected rectangular grooves, and an angle is formed between the plurality of rectangular grooves; or, the second through-groove is an arc-shaped groove; or, the second through-groove is an oblong groove; or, the second through-groove includes a plurality of connected oblong grooves, and an angle is formed between two connected oblong grooves.

[0021] According to some embodiments of the present invention, a third through slot is provided on the outer circumference of the rotor core.

[0022] According to an embodiment of a second aspect of the present invention, a compressor is provided. The compressor includes the motor according to the embodiment of the first aspect of the present invention.

[0023] According to the compressor of the embodiment of the present invention, by utilizing the motor described in the embodiment of the first aspect of the present invention, the area of ​​the first through-slot is controlled, and then the space occupied by the first through-slot on the rotor core is controlled, so that the first through-slot can better reduce the harmonics of the spatial magnetic field, suppress the armature reaction, reduce the iron loss of the motor, and thus fully improve the saturation degree of the motor, enhance the overload capacity of the motor, thereby achieving an improvement in the efficiency of the motor.

[0024] According to an embodiment of a third aspect of the present invention, an air-conditioning device is provided. The air-conditioning device includes the compressor according to the embodiment of the second aspect of the present invention.

[0025] According to the air-conditioning equipment of the embodiment of the present invention, by utilizing the compressor described in the embodiment of the second aspect of the present invention, the area of ​​the first through-slot is controlled, and then the space occupied by the first through-slot on the rotor core is controlled, so that the first through-slot can better suppress the armature reaction, reduce the iron loss of the motor, and then fully improve the saturation degree of the motor, enhance the overload capacity of the motor, thereby achieving an improvement in the efficiency of the motor.

[0026] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0028] Figure 11 is a schematic structural diagram of a stator core and a rotor core according to an embodiment of the present utility model;

[0029] Figure 2 1 is a schematic structural diagram of a stator core according to an embodiment of the present utility model;

[0030] Figure 3 1 is a schematic structural diagram of a rotor core according to an embodiment of the present utility model;

[0031] Figure 4 yes Figure 3 Enlarged view of area A in the middle;

[0032] Figure 5 This is a comparative example in which the first through groove is not provided;

[0033] Figure 6 is a function diagram of current and iron loss according to the embodiment of the utility model and the comparative example;

[0034] Figure 7 It is a current and efficiency function diagram according to the embodiment of the utility model and the comparative example.

[0035] Reference numerals:

[0036] 10. stator core; 11. through hole; 13. first receiving groove; 131. first opening;

[0037] 20. Rotor core; 21. Second accommodating slot; 211. First slot portion; 212. Second slot portion; 23. First through-slot; 231. First edge; 232. Second edge; 233. First connecting edge; 234. Second connecting edge; 25. Second through-slot; 27. Third through-slot. DETAILED DESCRIPTION

[0038] The following describes embodiments of the present invention in detail. 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 intended only to explain the present invention and are not to be construed as limiting the present invention.

[0039] The motor according to the embodiment of the present invention will be described below with reference to the accompanying drawings.

[0040] like Figures 1-4 As shown, the motor according to the embodiment of the present invention includes a stator core 10 and a rotor core 20 .

[0041] The stator core 10 is formed with a through hole 11 and N first accommodating slots 13. The first accommodating slots 13 are used to accommodate the stator winding. The rotor core 20 is rotatably arranged in the through hole 11. The rotor core 20 is provided with P second accommodating slots 21. The second accommodating slots 21 are used to accommodate permanent magnets. After power is applied to the stator winding, a rotating magnetic field is generated near the permanent magnets on the rotor core 20, thereby realizing the rotation of the permanent magnets and the rotor core 20, so that the rotor core 20 outputs rotational force outward.

[0042] A first through slot 23 is provided between two adjacent second accommodating slots 21. The first through slot 23 is used to reduce the harmonics of the spatial magnetic field, suppress the armature reaction, reduce the iron loss of the motor, and thereby reduce the loss of the rotor core 20 and the permanent magnet during rotation.

[0043] Specifically, the first through slot 23 can change the magnetic field near it, reduce the fluctuation of the spatial magnetic field, and thus suppress the armature reaction, reduce the iron loss of the motor, improve the motor saturation level, and enhance the motor overload capacity, thereby achieving improved motor efficiency.

[0044] The area of ​​the first through groove 23 is S. The first receiving groove 13 is connected to the through hole 11 through the first opening 131 . The width of the first opening 131 is M. 0.75 / mm≤GCD(N, P)*M / S≤0.85 / mm.

[0045] The area of ​​the first through-slot 23 is controlled by the formula, and then the space occupied by the first through-slot 23 on the rotor core 20 is controlled, so that the first through-slot 23 on the rotor core 20 that satisfies the formula can achieve better results in improving the efficiency of the motor. Specifically, the first through-slot 23 on the rotor core 20 that satisfies the formula can better reduce the harmonics of the spatial magnetic field, suppress the armature reaction, reduce the iron loss of the motor, and thus fully improve the saturation degree of the motor, enhance the overload capacity of the motor, and thus achieve an improvement in the efficiency of the motor.

[0046] What needs to be explained here is that GCD(N, P) refers to the greatest common divisor of N and P.

[0047] The first opening 131 includes width and depth. The depth of the first opening 131 extends along the axial direction of the stator core 10. The projection of the first opening 131 in the circumferential direction of the stator core 10 can be an arc or a straight line. The width of the first opening 131 refers to the length of the arc or the length of the straight line.

[0048] Therefore, according to the motor of the embodiment of the present invention, by controlling the area of ​​the first through slot 23, and then controlling the space occupied by the first through slot 23 on the rotor core 20, the first through slot 23 can better reduce the harmonics of the spatial magnetic field, suppress the armature reaction, and reduce the iron loss of the motor, thereby fully improving the saturation degree of the motor and enhancing the overload capacity of the motor, thereby achieving an improvement in the efficiency of the motor.

[0049] The following describes a motor according to a specific embodiment of the present invention with reference to the accompanying drawings.

[0050] In some specific embodiments of the present invention, Figures 1-4 As shown, the motor includes a stator core 10 and a rotor core 20 .

[0051] In some embodiments of the present invention, S≥11mm 2 .

[0052] Specifically, the area S of the first through groove 23 may be 11 mm 2 , 15mm 2 , 17mm 2 , 19mm 2 , 20mm 2 , there are no too many restrictions here.

[0053] In some embodiments of the present invention, Figure 2 As shown, the radius of the stator core 10 is D1, and the radius of the through hole 11 is D2, satisfying: 0.52≤D2 / D1≤0.6.

[0054] Among them, the rotor core 20 is arranged at the through-hole, and the size of the through-hole 11 limits the size of the rotor core 20, so that 0.52≤D2 / D1≤0.6, so as to control the size relationship between the rotor core 20 and the stator core 10, thereby ensuring the rotor inertia while taking into account the electromagnetic performance of the motor.

[0055] In some embodiments of the present invention, Figure 2 As shown, the radius of the through hole 11 is D2 , which satisfies 0.13≤2*arcsin[(M / 2*D2) / (π / N)]≤0.21, so as to control the size of the first opening 131 .

[0056] If the first opening 131 is too small, winding will be difficult. If the first opening 131 is too large, the first opening 131 will occupy too large an area of ​​the stator core 10 , affecting the fixation of the stator winding and the strength of the stator core 10 .

[0057] In some embodiments of the present invention, N / P=3 / 2 to control the number of the first receiving grooves 13 and the second receiving grooves 21 .

[0058] In some embodiments, there are 9 first receiving slots 13 and 6 second receiving slots 21, and GCD(N, P) = 3; or, there are 12 first receiving slots 13 and 8 second receiving slots 21, and GCD(N, P) = 4. No excessive restrictions are imposed here.

[0059] In some embodiments of the present invention, the N first accommodating slots 13 are arranged at intervals along the circumference of the stator core 10 , so that the plurality of first accommodating slots 13 are evenly distributed on the stator core 10 .

[0060] In some embodiments of the present invention, the P second accommodating slots 21 are arranged at intervals along the circumference of the rotor core 20 , so that the plurality of second accommodating slots 21 are evenly distributed on the rotor core 20 .

[0061] In some embodiments of the present invention, the second receiving slot 21 includes a first slot portion 211. In the radial direction of the rotor core 20, two adjacent first slot portions 211 of two adjacent second receiving slots 21 extend outward toward each other, and the first through slot 23 is located between the two adjacent first slot portions 211 of the two adjacent second receiving slots 21.

[0062] In the radial direction of the rotor core 20, the outer edge of the first through slot 23 is the first edge 231, and the inner edge of the first through slot 23 is the second edge 232. The length of the first edge 231 is greater than the length of the second edge 232, so as to fully utilize the space between two adjacent second accommodating slots 21, so that the first through slot 23 can better reduce the harmonics of the spatial magnetic field, thereby fully improving the motor saturation level and enhancing the motor overload capacity, thereby achieving an improvement in motor efficiency.

[0063] In some embodiments, the first through slot 23 is trapezoidal and its projection in the axial direction of the rotor core 20 is a trapezoid. The projection of the first through slot 23 in the circumferential direction of the rotor core 20 can be an isosceles trapezoid, a right-angled trapezoid or a common trapezoid.

[0064] Preferably, the projection of the first through slot 23 in the circumferential direction of the rotor core 20 is an isosceles trapezoid, and the waist of the isosceles trapezoid is parallel to the adjacent first slot portion 211 , so as to fully utilize the space between adjacent second accommodating slots 21 .

[0065] In some optional embodiments of the present invention, the first edge 231 is an arc or a straight line.

[0066] In some optional embodiments of the present invention, the second edge 232 is a straight line or an arc.

[0067] In some embodiments, the first edge 231 is a straight line and the second edge 232 is a straight line to form a trapezoidal groove. In other embodiments, the first edge 231 is an arc line and the second edge 232 is an arc line to form a sector annular groove.

[0068] Of course, the first edge 231 may be an arc and the second edge 232 may be a straight line, or the first edge 231 may be a straight line and the second edge 232 may be an arc. No further restrictions are imposed here.

[0069] In some specific embodiments of the present invention, the first through groove 23 also includes a first connecting edge 233 and a second connecting edge 234, the first connecting edge 233 connects one end of the first edge 231 and one end of the second edge 232, and the second connecting edge 234 connects the other end of the first edge 231 and the other end of the second edge 232.

[0070] In some embodiments, the first connecting edge 233 is a straight line or an arc.

[0071] In some embodiments, the second connecting edge 234 is a straight line or an arc.

[0072] In some examples, the first edge 231 , the second edge 232 , the first connecting edge 233 , and the second connecting edge 234 are straight lines to form a trapezoidal first through-groove 23 .

[0073] The first edge 231 and the first connecting edge 233 and the second connecting edge 234 can transition through an arc, and the second edge 232 and the first connecting edge 233 and the second connecting edge 234 can transition through an arc, which reduces the difficulty of processing.

[0074] In other examples, the first edge 231 and the second edge 232 are arcs, and the first connecting edge 233 and the second connecting edge 234 are straight lines, so as to form a first through-groove 23 in a fan-shaped or oblong shape.

[0075] It should be explained here that the oblong groove includes a rectangular groove and two semicircular grooves; or, the oblong groove includes a rectangular groove and two arcuate grooves, and the two semicircular grooves or two arcuate grooves are located on both sides of the rectangular groove.

[0076] In some optional embodiments of the present invention, such as Figure 3As shown, the second accommodating groove 21 includes two first groove portions 211 and a second groove portion 212. The first groove portion 211 extends along the radial direction of the rotor core 20. In the radial direction of the rotor core 20, the two first groove portions 211 of the second accommodating groove 21 extend outward in a direction away from each other, and the second groove portion 212 connects the inner ends of the two first groove portions 211. This makes it easy to fully utilize the space on the rotor core 20 to set larger permanent magnets on the rotor core 20, thereby increasing the power output of the rotor core 20.

[0077] The first groove portion 211 is extended along the radial direction of the rotor core 20 to reduce interference between the permanent magnets and thereby reduce energy loss.

[0078] In some embodiments of the present invention, at least one second through slot 25 is further provided on one side of the accommodating slot close to the outer edge of the rotor core 20. The second through slot 25 is used to guide the magnetic circuit, improve the direction of the magnetic lines of force, and thereby reduce harmonics.

[0079] In some embodiments, the second through-groove 25 is a rectangular groove.

[0080] In other embodiments, the second through-groove 25 includes a plurality of connected rectangular grooves, and an angle is formed between any two connected rectangular grooves.

[0081] In other embodiments, the second through groove 25 is a fan-shaped annular groove.

[0082] In other embodiments, the second through-groove 25 is an oblong groove.

[0083] In other embodiments, the second through-groove 25 includes a plurality of connected oblong grooves, and an angle is formed between any two connected oblong grooves.

[0084] It should be explained here that the oblong groove includes a rectangular groove and two semicircular grooves or two arcuate grooves, and the two semicircular grooves or two arcuate grooves are located on both sides of the rectangular groove.

[0085] In summary, the shape of the second through slot 25 can match the shape of the corresponding space on the rotor core 20 to fully utilize the space on the rotor core 20, so that the second through slot 25 can fully guide the magnetic circuit, improve the direction of the magnetic lines of force, and thus reduce harmonics.

[0086] In some embodiments of the present invention, Figure 4 As shown, a third through slot 27 is provided on the outer circumference of the rotor core 20 , and the third through slot 27 is used to reduce the torque pulsation of the motor.

[0087] In some embodiments, a plurality of third through-slots 27 are defined along the outer periphery of the rotor core 20. This reduces the harmonic content of the air gap flux density, thereby reducing eddy current losses in the motor, improving its operating efficiency, and lowering its temperature rise. Furthermore, this approach reduces torque ripple, resulting in smoother motor operation and effectively controlled noise, thereby optimizing motor performance.

[0088] like Figure 4 As shown, in some embodiments, the third through slot 27 includes at least one of a rectangular slot, a fan-shaped slot, and a curved slot, so that the outer edge of the rotor core 20 is not a complete circle, thereby reducing the harmonic content of the air gap magnetic density, reducing the eddy current loss of the motor, and improving the operating efficiency of the motor.

[0089] The following introduces a comparative example in which the first through groove 23 is not provided. Figure 5 As shown, the rotor core 20 is not provided with the first through slot 23 .

[0090] The stator core 10 is provided with a plurality of stator windings. By supplying current to the stator windings, a rotating magnetic field is generated near the permanent magnets on the rotor core 20 , thereby realizing the rotation of the permanent magnets and the rotor core 20 .

[0091] like Figure 6 As shown, the current passed through the stator winding is used as the independent variable, and the iron loss of the motor is used as the dependent variable. Experiments are conducted on the comparative example and the stator core 10 respectively.

[0092] like Figure 7 As shown, the current passed through the stator winding is used as the independent variable, and the efficiency of the motor is used as the dependent variable. Experiments are conducted on the comparative example and the stator core 10 respectively.

[0093] like Figure 6 As shown, Q1 is the iron loss of the motor when different currents are passed through the stator winding in the embodiment of the present invention, and Q2 is the iron loss of the motor when different currents are passed through the stator winding in the comparative example.

[0094] By comparing Q1 and Q2, it can be clearly concluded that when the same current is passed through, the iron loss of the motor provided with the first through slot 23 is smaller, thereby achieving the purpose of reducing the iron loss of the motor.

[0095] like Figure 7 As shown, W1 is the motor efficiency when different currents are passed through the stator winding in the embodiment of the present invention, and W2 is the motor efficiency when different currents are passed through the stator winding in the comparative example.

[0096] By comparing W1 and W2 , it can be clearly concluded that when the same current is supplied, the motor provided with the first through slot 23 has a higher motor efficiency, thereby achieving the purpose of improving the motor efficiency.

[0097] The following describes a compressor according to an embodiment of the present invention. The compressor according to the embodiment of the present invention includes the motor according to the above embodiment of the present invention.

[0098] According to the compressor of the embodiment of the present invention, by utilizing the motor according to the above-mentioned embodiment of the present invention, by controlling the area of ​​the first through-slot 23, and then controlling the space occupied by the first through-slot 23 on the rotor core 20, the first through-slot 23 can better reduce the harmonics of the spatial magnetic field, thereby fully improving the motor saturation degree and enhancing the motor overload capacity, thereby achieving an improvement in motor efficiency.

[0099] Other structures and operations of the compressor according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0100] The following describes an air conditioning device according to an embodiment of the present invention. The air conditioning device according to the embodiment of the present invention includes the compressor according to the above embodiment of the present invention.

[0101] According to the air-conditioning equipment of the embodiment of the present invention, by utilizing the motor according to the above-mentioned embodiment of the present invention, by controlling the area of ​​the first through-slot 23, and then controlling the space occupied by the first through-slot 23 on the rotor core 20, the first through-slot 23 can better reduce the harmonics of the spatial magnetic field, thereby fully improving the motor saturation degree and enhancing the motor overload capacity, thereby achieving an improvement in motor efficiency.

[0102] Other structures and operations of the air-conditioning device according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0103] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more. In the description of the present invention, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or the first and second features not being in direct contact but being in contact through another feature between them.

[0104] In the description of the present invention, a first feature “above”, “above” 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.

[0105] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0106] Throughout this specification, reference to terms such as "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 that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the illustrative use of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0107] 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 purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A motor, characterized in that: include: A stator core is formed with a through hole and N first accommodating slots, wherein the first accommodating slots are used to accommodate stator windings, the first accommodating slots are connected to the through hole through a first opening, and the first opening has a width of M; The rotor core is rotatably disposed in the through hole. The rotor core is provided with P second accommodating slots, each of which is used to accommodate a permanent magnet. A first through slot is provided between two adjacent second accommodating slots. The area of ​​the first through slot is S, wherein 0.75 / mm≤GCD(N,P)*M / S≤0.85 / mm.

2. The motor according to claim 1, characterized in that S≥11mm 2 。 3. The motor according to claim 1, characterized in that The radius of the stator core is D1, and the radius of the through hole is D2, which satisfies: 0.52≤D2 / D1≤0.

6.

4. The motor according to claim 1, characterized in that The radius of the through hole is D2, which satisfies 0.13≤2*arcsin[(M / 2*D2) / (π / N)]≤0.

21.

5. The motor according to claim 1, characterized in that N / P=3 / 2.

6. The motor according to claim 1, characterized in that N first accommodating slots are arranged at intervals along the circumference of the stator core; And\or, the P second accommodating grooves are arranged at intervals along the circumference of the rotor core.

7. The motor according to claim 1, characterized in that The second accommodating slot includes a first slot portion. In the radial direction of the rotor core, two adjacent first slot portions of two adjacent second accommodating slots extend outward toward each other, and the first through slot is located between the adjacent first slot portions of the two adjacent second accommodating slots. In the radial direction of the rotor core, the outer edge of the first through slot is the first edge, the inner edge of the first through slot is the second edge, the length of the first edge is L1, and the length of the second edge is L2, wherein L1<L2.

8. The motor according to claim 7, characterized in that The first edge is an arc or a straight line; And\or, the second edge is a straight line or an arc.

9. The motor according to claim 7 or 8, characterized in that The first through-groove further includes a first connecting edge and a second connecting edge, wherein the first connecting edge connects one end of the first edge and one end of the second edge, and the second connecting edge connects the other end of the first edge and the other end of the second edge. The first connecting edge is a straight line or an arc, and the second connecting edge is a straight line or an arc.

10. The motor according to claim 7, characterized in that The second accommodating groove includes two first groove portions and a second groove portion, the first groove portion extends along the radial direction of the rotor core, and in the radial direction of the rotor core, the two first groove portions of the second accommodating groove extend outward in a direction away from each other, and the second groove portion connects the inner ends of the two first groove portions.

11. The motor according to claim 1, characterized in that At least one second through slot is further provided on a side of the accommodating slot close to the outer edge of the rotor core.

12. The motor according to claim 11, characterized in that The second through-groove is a rectangular groove; Alternatively, the second through-groove comprises a plurality of connected rectangular grooves, and angles are formed between the plurality of rectangular grooves; Alternatively, the second through-groove is an arc-shaped groove; Alternatively, the second through-groove is an oblong groove; Alternatively, the second through groove includes a plurality of connected oblong grooves, and an angle is formed between any two connected oblong grooves.

13. The motor according to claim 1, characterized in that A third through slot is provided on the outer circumference of the rotor core.

14. A compressor, characterized in that: Comprising a motor according to any one of claims 1-13.

15. An air conditioning device, characterized in that: Comprising the compressor of claim 14.

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