Motor, compressor and refrigeration equipment
By optimizing the design of stator slots and stator laminations, the problems of vibration and efficiency reduction caused by motor torque pulsation were solved, thereby improving motor efficiency and heat dissipation performance while controlling costs.
Patent Information
- Application Number
- CN202411061213.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-02
- Publication Date
- 2026-02-03
AI Technical Summary
Existing motors exhibit torque pulsation when outputting electromagnetic torque, leading to vibration and reduced efficiency. Furthermore, existing methods that control torque pulsation by compensating current increase the motor's input power and cost.
By optimizing the slot width of the stator slots and the design of the stator laminations, and by rationally controlling the ratio of the slot width to the inner circumference of the stator laminations, the assembly convenience of the stator windings and the magnetic flux flow are ensured, torque pulsation is reduced, and motor efficiency and heat dissipation performance are improved.
Effectively control torque pulsation, improve motor efficiency and heat dissipation performance, reduce efficiency loss and shortened lifespan caused by overheating, and control costs.
Smart Images
Figure CN121461640A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of electric machines, in particular to an electric machine, a compressor and a refrigeration device. BACKGROUND
[0002] With the rapid development of industrial automation and intelligent manufacturing, the performance of electric machines as core components of driving devices directly affects the efficiency and reliability of the entire system.
[0003] At present, the output electromagnetic torque of the electric machine usually has a certain torque ripple, which causes vibration of the electric machine. In order to suppress the influence of the torque ripple, a compensation current is usually introduced through a frequency converter to reduce the vibration problem caused by the torque ripple. However, the introduction of the current increases the input power of the electric machine, thereby sacrificing the efficiency of the electric machine, or increases additional control hardware and software, thereby increasing the cost. SUMMARY
[0004] The main purpose of the present application is to provide an electric machine, a compressor and a refrigeration device, which aims to effectively control the torque ripple and effectively control the cost while improving the efficiency of the electric machine.
[0005] To achieve the above purpose, the electric machine provided by the present application comprises a stator component;
[0006] The stator component comprises a stator core, the stator core comprises a plurality of stator laminations stacked along the axial direction thereof, the minimum radius of the stator laminations is R1, the stator laminations comprise a stator yoke and a plurality of stator teeth arranged on the inner side of the stator yoke, the minimum distance between the tooth shoe portions of two adjacent stator teeth is L2, the stator yoke, two adjacent stator teeth and the stator yoke form a stator slot, and the number of stator slots is Q,
[0007] In an embodiment,
[0008] In an embodiment, 2mm≤L2≤4mm; and / or, 24mm≤R1≤35mm.
[0009] In an embodiment, the electric machine further comprises a rotor component arranged on the inner side of the stator component;
[0010] The number of poles P of the rotor component, the maximum distance R2 between the bottom wall of the stator slot and the center of the stator lamination, and the maximum radius R3 of the outer contour of the stator lamination satisfy:
[0011] In an embodiment,
[0012] In an embodiment, 5mm≤R3-R2≤13mm; and / or, 24mm≤R1≤35mm; and / or, 40mm≤R3≤90mm.
[0013] In an embodiment, the stator tooth comprises a tooth portion and the tooth shoe portion, one end of the tooth portion is connected to the stator yoke, and the other end is provided with the tooth shoe portion, the width of the tooth portion is L1,
[0014] In an embodiment,
[0015] and / or, 4mm≤L1≤11mm.
[0016] In an embodiment, 15≤Q≤18; and / or, 10≤P≤12;
[0017] and / or, the outer contour of the stator yoke is any one of a circle, a special shape.
[0018] In an embodiment, the number Q of the stator slots, the number p of poles of the rotor component, and the number m of phases of the motor satisfy: 0
[0019] The application also provides a compressor comprising the motor as described above.
[0020] The application also provides a refrigeration device comprising the compressor as described above.
[0021] In the technical solution of the application, the motor comprises a stator component, the stator component comprises a stator core, a plurality of stator slots are formed on the stator lamination of the stator core, and the ratio of the total slot opening width of the plurality of stator slots to the inner circumference of the stator lamination satisfies: In this way, the slot opening width of the stator slot is reasonably designed, which can facilitate the assembly of the stator winding, ensure the flow of magnetic flux in the motor on the stator core, guarantee the maximum output torque of the motor, reduce torque ripple, improve the efficiency of the motor, improve the heat dissipation performance of the motor on the basis of effectively controlling the torque ripple, and thus reduce the efficiency reduction and service life shortening caused by overheating of the motor, thereby effectively controlling the cost. BRIEF DESCRIPTION OF DRAWINGS
[0022] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the application, and for those skilled in the art, other drawings can also be obtained from the structures shown in the drawings without creative labor.
[0023] Figure 1 Structure diagram of an embodiment of the motor provided by the present application;
[0024] Figure 2 For Figure 1 Structure diagram of an embodiment of the stator lamination of the stator component;
[0025] Figure 3 For Figure 1 Structure diagram of another embodiment of the stator lamination of the stator component;
[0026] Figure 4 For Figure 1 Structure diagram of still another embodiment of the stator lamination of the stator component;
[0027] Figure 5 Structure diagram of an embodiment of the compressor provided by the present application;
[0028] Figure 6 Relationship diagram of the slot opening of the stator slot and the torque ripple;
[0029] Figure 7 Relationship diagram of the width of the stator yoke of the stator component and the rigidity of the motor;
[0030] Figure 8 Relationship diagram of the tooth width of the stator component and the rigidity of the motor.
[0031] Brief description of the drawings:
[0032] 1. compressor; 100. motor; 10. stator component; 11. stator lamination; 111. stator yoke; 112. stator tooth; 1121. tooth shoe part; 1122. tooth part; 113. stator slot; 12. stator winding; 20. rotor component; 21. rotor core; 211. mounting slot; 22. permanent magnet; 30. pump body component; 40. shell.
[0033] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION
[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.
[0035] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, motion condition, etc. between the components in a certain posture, and if the certain posture changes, the directional indications will also change accordingly.
[0036] In addition, if the embodiments of the present application involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, "and / or" or "and / or" appearing throughout the text means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist and is not within the protection scope required by the present application.
[0037] With the rapid development of industrial automation and intelligent manufacturing, as the core component of the driving device, the performance of the motor directly affects the efficiency and reliability of the whole system.
[0038] At present, in the output electromagnetic torque of the motor, there is usually a certain torque ripple, which will cause the vibration of the motor, and in order to suppress the influence of torque ripple, the compensation current is usually introduced through the frequency converter to reduce the vibration problem brought by torque ripple, but the introduction of current will increase the input power of the motor, thereby sacrificing the efficiency of the motor, or increasing the additional control hardware and software, thereby increasing the cost.
[0039] In order to solve the technical problem, the present application provides a motor 100.
[0040] Please refer to Figures 1 to 5 In an embodiment of the present application, the motor 100 comprises a stator component 10; the stator component 10 comprises a stator core, the stator core comprises a plurality of stator laminations 11 stacked along the axial direction thereof, the minimum radius of the stator lamination 11 is R1, the stator lamination 11 comprises a stator yoke 111 and a plurality of stator teeth 112 arranged on the inner side of the stator yoke 111, the minimum distance between the tooth shoe portions 1121 of two adjacent stator teeth 112 is L2, the stator yoke 111, two adjacent stator teeth 112 and the stator teeth 112 form a stator slot 113, the number of stator slots 113 is Q, In this way, the torque ripple can be effectively controlled, and the motor efficiency can be improved while effectively controlling the cost.
[0041] In the technical solution of the present application, the motor 100 comprises a stator component 10, the stator component 10 comprises a stator core, a plurality of stator slots 113 are formed on the stator lamination 11 of the stator core, and the ratio of the total slot opening width of the plurality of stator slots 113 to the inner circumference of the stator lamination 11 satisfies: In this way, the slot opening width of the stator slot 113 is reasonably designed, which can facilitate the assembly of the stator winding 12 and ensure the flow of magnetic flux in the motor 100 on the stator core, guarantee the maximum output torque of the motor 100, reduce torque ripple, improve motor efficiency, and improve the heat dissipation performance of the motor 100 on the basis of effectively controlling torque ripple, thereby reducing the efficiency reduction and service life shortening caused by overheating of the motor 100, and effectively controlling the cost.
[0042] Specifically, the slot opening width of the stator slot 113 is determined by the minimum distance between the tooth shoe portions 1121 of the two adjacent stator teeth 112, and the minimum radius of the stator lamination 11 is determined by the distance between the end of the stator tooth 112 away from the stator yoke 111 and the center of the stator lamination 11. Specifically, when Q is a constant value, when less than 0.21, it is easy to make the slot opening of the stator slot 113 too small, which is not conducive to the assembly of the stator winding 12 in the stator slot 113, increases the difficulty of heat dissipation, and also easily makes the inner diameter of the stator lamination 11 too large, increases the overall size of the stator lamination 11, and further increases the manufacturing cost; when greater than 0.29, it is easy to make the slot opening of the stator slot 113 too large, which is easy to limit the magnetic flux of the motor 100, leading to the reduction of the efficiency of the motor 100, and also affects the stable assembly of the stator winding 12 in the stator slot 113, leading to the increase of torque ripple, and also easily makes the inner diameter of the stator lamination 11 too small, affecting the maximum output torque of the motor 100, therefore, the specific value of is limited to between 0.21 and 0.29, which can guarantee the maximum output torque of the motor 100, reduce torque ripple, and further improve the efficiency of the motor, and on the basis of effectively controlling torque ripple, improve the heat dissipation performance of the motor 100, and on the basis of guaranteeing the miniaturization of the stator lamination 11, improve the disassembly and assembly convenience of the stator winding 12 on the stator core. In addition, the stator slot 113 can also have a larger cross-sectional area to accommodate more stator windings 12, which helps to improve the efficiency of the motor.
[0043] wherein, the specific value of includes but is not limited to 0.21, 0.22, 0.23, 0.24, 0.25, 0.26, 0.27, 0.28, 0.29.
[0044] In combination with the description of Figure 6 , it can be obtained that when the ratio of the total slot opening width of the plurality of stator slots 113 to the inner circumference of the stator lamination 11 satisfies When the specific value of L2 is between 0.21 and 0.29, the torque ripple of the motor 100 is small, the vibration of the motor 100 is effectively reduced, and the motor performance is improved.
[0045] Further, in the embodiment of the present application, that is, further narrowing the value range of L2 ensures the optimization of the motor performance, reduces the demand for shock absorption of the motor 100 due to large torque ripple, further improves the heat dissipation performance of the motor 100, reduces the demand for the motor 100 due to the need for an additional cooling system, and further improves the performance of the motor 100.
[0046] Optionally, in the embodiment of the present application, 2mm≤L2≤4mm; it can be understood that when L2 is less than 2mm, the slot opening of the stator slot 113 is too small, which is not conducive to the assembly of the stator winding 12 in the stator slot 113 and increases the difficulty of heat dissipation, and when L2 is greater than 4mm, the slot opening of the stator slot 113 is too large, which easily limits the magnetic flux of the motor 100, causes the efficiency of the motor 100 to decrease, and also affects the stable assembly of the stator winding 12 in the stator slot 113, causing the torque ripple to increase, therefore, the slot opening width L2 of the stator slot 113 is limited between 2mm and 4mm, the slot opening size of the stator slot 113, that is, the minimum distance between the tooth shoe portions 1121 of the two adjacent stator teeth 112, can be reasonably designed, so as to ensure the quick disassembly and stable assembly of the stator winding 12, reduce the torque ripple, and improve the efficiency and heat dissipation performance of the motor 100.
[0047] Specifically, the specific value of the slot opening width of the stator slot 113 includes but is not limited to 2mm, 3mm, and 4mm. In other embodiments, the slot opening width of the stator slot 113 can be greater than 4mm or less than 2mm within the size limit of the stator lamination 11, and the specific value of L2 can also change.
[0048] Optionally, in the embodiment of the present application, 24mm≤R1≤35mm; it can be understood that when R1 is less than 24mm, the inner diameter of the stator lamination 11 is too small, which affects the maximum output torque of the motor 100; and when R1 is greater than 35mm, the inner diameter of the stator lamination 11 is too large, which easily increases the overall size of the stator lamination 11 and further increases the manufacturing cost; therefore, the minimum radius R1 of the stator lamination 11 is limited between 24mm and 35mm, the stator lamination 11 can be reasonably designed, the maximum output torque of the motor 100 is ensured, and the miniaturization level of the stator core is improved.
[0049] Specifically, the specific value of the inner diameter R1 of the stator lamination sheet 11 includes but is not limited to 24mm, 25mm, 26mm, 27mm, 28mm, 29mm, 30mm, 31mm, 32mm, 33mm, 34mm, 35mm. In other embodiments, the inner diameter of the stator lamination sheet 11 can be greater than 35mm or less than 24mm, as long as the size of the stator lamination sheet 11 is allowed. or The specific value of R3-R2 can also change.
[0050] Referring to Figures 1 to 4 In embodiments of the present application, the motor 100 further comprises a rotor component 20 arranged inside the stator component 10; the number of poles P of the rotor component 20, the maximum distance R2 between the bottom wall of the stator slot 113 and the center of the stator lamination sheet 11, and the maximum radius R3 of the outer contour of the stator lamination sheet 11 satisfy: It can be understood that the distance between the bottom wall of the stator slot 113 and the outer contour of the stator lamination sheet 11 can be obtained by R3-R2, and 2*R1 is the inner diameter of the stator lamination sheet 11, wherein by limiting and the ratio of P is between 0.002 and 0.012, the distance between the bottom wall of the stator slot 113 and the outer contour of the stator lamination sheet 11 is reasonably designed, and the specific number of poles P of the rotor component 20 is matched, so that the structural strength and rigidity of the stator lamination sheet 11 can be guaranteed, the vibration caused by the torque and electromagnetic force during the operation of the motor 100 can be more reliably resisted, the noise and vibration can be reduced, the operation stability of the motor 100 can be improved, the energy loss caused by vibration can be reduced, the efficiency of the motor 100 can be improved, the shape and size of the stator lamination sheet 11 can be kept stable due to high rigidity and low temperature rise, and the service life of the motor 100 can be prolonged.
[0051] Specifically, The specific value of R3-R2 includes but is not limited to 0.002, 0.003, 0.004, 0.005, 0.006, 0.007, 0.008, 0.009, 0.01, 0.011, 0.012.
[0052] Further, in embodiments of the present application, i.e. further reducing the range of values, to ensure the optimization of the rigidity of the stator lamination sheet 11, reduce the torque ripple and additional energy loss caused by vibration, thereby improving the efficiency of the motor 100, further improving the heat dissipation performance of the motor 100, reducing the heat accumulation caused by insufficient rigidity, reducing the temperature rise of the motor 100, thereby improving the service life and working stability of the motor 100, and improving the performance of the motor 100.
[0053] In combination with Figure 7As shown, it can be obtained that when limited When the specific value is between 0.005 and 0.012, the stator core has better rigidity, which helps to reliably control the torque pulsation of the motor 100, reduce the vibration and noise of the motor 100, and improve the motor performance.
[0054] Optionally, in the embodiments of the present invention, 5mm≤R3-R2≤13mm. It is understood that when R3-R2 is less than 5mm, the distance between the bottom wall of the stator slot 113 and the outer contour of the stator lamination 11 is small, which is not conducive to maintaining the shape and size of the stator lamination 11, nor is it conducive to controlling the temperature rise and torque pulsation of the motor 100. When R3-R2 is greater than 13mm, the distance between the bottom wall of the stator slot 113 and the outer contour of the stator lamination 11 is large, which is easy to increase the size of the stator lamination 11 and will also affect the torque output of the motor 100. Therefore, the difference between R3 and R2 is limited to between 5mm and 13mm. On the basis of ensuring the maximum output torque of the motor 100, torque pulsation is reduced, heat dissipation is improved, and thus the performance of the motor 100 is improved.
[0055] Specifically, the difference between R3 and R2 can take values including, but not limited to, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, 11mm, 12mm, and 13mm. However, in other embodiments, within the limits of the stator lamination 11's dimensions, R3-R2 can be greater than 13mm or less than 5mm. The specific value can also change.
[0056] Optionally, in an embodiment of the present invention, 40mm≤R3≤90mm, so that the maximum radius of the stator lamination 11 can be reasonably controlled, thereby realizing the miniaturization of the stator core. At the same time, the performance of the motor 100 can be improved by limiting the difference between R3 and R2.
[0057] Specifically, the maximum radius of the stator lamination 11 can be, but is not limited to, 40mm, 45mm, 50mm, 60mm, 70mm, 75mm, 80mm, 85mm, and 90mm. However, in other embodiments, within the limits of the stator lamination 11's dimensions, the maximum radius of the stator lamination 11 can be greater than 90mm or less than 40mm. The specific value can also change.
[0058] In addition, the ratio between the outer diameter R3 and the inner diameter R1 of the stator lamination 11 can be limited, which can improve the maximum output torque of the motor 100 while ensuring the miniaturization of the stator core.
[0059] The maximum radius of the outer periphery of the stator lamination 11 is R3, which is the maximum distance from the center of the stator lamination 11 to the outer edge contour thereof. If the outer periphery of the stator lamination 11 is a complete circle, it can be directly measured, and the maximum value of the radius of the stator lamination 11 is R3. If the outer periphery of the stator lamination 11 is a non-complete circle with grooves, a circle is determined by three points at the outermost ends of the circular arcs, and the maximum value of the radius of the stator lamination 11 is R3.
[0060] The distance between the bottom wall of the stator slot 113 and the center of the stator lamination 11 is R2, which is the maximum distance from the center of the stator lamination 11 to the bottom wall of the stator slot 113. If the inner periphery of the bottom wall of each stator slot 113 is a complete circle after integration, it can be directly measured, and the maximum distance from the center of the stator lamination 11 to the bottom wall of the stator slot 113 is R2. If the inner periphery of the bottom wall of each stator slot 113 is a non-complete circle with grooves after integration, a circle is determined by three points at the outermost ends of the circular arcs, and the maximum distance from the center of the stator lamination 11 to the bottom wall of the stator slot 113 is R2.
[0061] The minimum radius of the inner periphery of the stator lamination 11 is R1, which is the minimum distance from the center of the stator lamination 11 to the inner edge contour thereof. If the inner periphery of the stator lamination 11 is a complete circle, it can be directly measured, and the minimum value of the radius of the stator lamination 11 is R1. If the inner periphery of the stator lamination 11 is a non-complete circle with grooves, a circle is determined by three points at the innermost ends of the circular arcs, and the minimum value of the radius of the stator lamination 11 is R1.
[0062] Please refer to Figures 1 to 4 In the embodiment of the present application, the stator tooth 112 includes a tooth portion 1122 and the tooth shoe portion 1121, one end of the tooth portion 1122 is connected to the stator yoke 111, and the other end is provided with the tooth shoe portion 1121, the width of the tooth portion 1122 is L1, It can be understood that the opposite sides of the end of the tooth portion 1122 away from the stator yoke 111 are each provided with a tooth shoe portion 1121 to constrain the movement tendency of the stator winding 12 out of the stator slot 113 and ensure the stable assembly of the stator winding 12, wherein the width of the tooth portion 1122 is limited The ratio of L1 and P is between 0.003 and 0.013, because the radiation path of the magnetic flux is between the tooth portion 1122, the stator yoke 111 and the rotor component 20, reasonable design of the width of the tooth portion 1122 improves the structural strength and rigidity of the stator tooth 112, which helps to improve the vibration of the motor 100 during operation, reduce noise, cooperate with the specific number P of the magnetic poles of the rotor component 20, in the case of more magnetic poles, improve the order of noise, reduce electromagnetic force, thereby further reducing vibration, improving the running stability of the motor 100, reducing noise, and also facilitating the stability of the shape and size of the stator lamination 11 due to high rigidity and low temperature rise, prolonging the service life of the motor 100.
[0063] Specifically, The specific values include, but are not limited to, 0.003, 0.004, 0.005, 0.006, 0.007, 0.008, 0.009, 0.01, 0.011, 0.012, and 0.013.
[0064] Furthermore, in embodiments of the present invention, That is, to further shrink The range of values ensures the optimization of the rigidity of the stator lamination 11, reduces torque pulsation and additional energy loss caused by vibration, thereby improving the efficiency of the motor 100. It can also further improve the heat dissipation performance of the motor 100, reduce heat accumulation caused by insufficient rigidity, reduce the temperature rise of the motor 100, thereby improving the life and working stability of the motor 100, and thus improving the performance of the motor 100.
[0065] Combination Figure 8 As shown, it can be obtained that when limited When the specific value is between 0.006 and 0.013, the stator core has better rigidity, which helps to reliably control the torque pulsation of the motor 100, reduce the vibration and noise of the motor 100, and improve the motor performance.
[0066] Optionally, in the embodiments of the present invention, 4mm≤L1≤11mm. It is understood that when L1 is less than 4mm, the width of the tooth 1122 is small, which is not conducive to maintaining the shape and size of the stator lamination 11, nor is it conducive to controlling the temperature rise and torque pulsation of the motor 100. When L1 is greater than 11mm, the width of the tooth 1122 is large, which can easily reduce the cross-sectional area of the stator slot 113 and affect the torque output of the motor 100. Therefore, limiting L1 to between 4mm and 11mm can reduce torque pulsation and improve heat dissipation while ensuring the maximum output torque of the motor 100, thereby improving the performance of the motor 100.
[0067] Specifically, the width of the tooth 1122 can take values including, but not limited to, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, and 11mm. However, in other embodiments, the width of the tooth 1122 can be greater than 11mm or less than 4mm, provided that the size of the stator lamination 11 allows it. The specific value can also change.
[0068] Optionally, in an embodiment of the present invention, 15 ≤ Q ≤ 18; wherein the number of stator slots 113 can be selected according to actual needs.
[0069] Optionally, in an embodiment of the present invention, 10≤P≤12, wherein the number of poles of the rotor component 20 can be selected according to actual needs.
[0070] Please refer to Figures 2 to 4 In the embodiments of the present application, the outer profile of the stator yoke 111 is any one of a circle, a special shape, wherein, as shown in Figure 2 The outer profile of the stator yoke 111 is a circle, which facilitates the manufacturing of the stator lamination 11, and at the same time, helps to have a more uniform magnetic flux distribution, reduces the local concentration of magnetic flux, and thus reduces the iron loss; as shown in Figure 3 and Figure 4 The outer profile of the stator yoke 111 is a special shape, that is, a groove is formed on the outside of the stator yoke 111, and the distance between the groove bottom wall and the center of the stator lamination 11 is between the maximum radius and the minimum radius of the stator yoke 111, which increases the heat exchange by providing a larger surface area, and improves the heat dissipation performance of the motor 100, wherein the profile line of the groove can include at least one of an arc segment, a straight line segment, and a multi-segment line.
[0071] Optionally, in the embodiments of the present application, the number Q of the stator slots 113, the number p of poles of the rotor component 100, and the number m of motor phases satisfy: 0 < Q / mP < 1, that is, the motor 100 is a fractional slot motor 100, wherein the fractional slot motor 100 can reduce the uneven distribution of magnetic flux by optimizing the combination of slot number and pole number, and can also output smoother torque, thereby improving the motor performance.
[0072] The present application also provides a compressor 1, which comprises a motor 100, the specific structure of which is referred to the above embodiments, since the compressor 1 adopts all the technical solutions of 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. Among them, the compressor 1 comprises a shell 40, the shell 40 is provided with a stator component 10, a rotor component 20 arranged inside the stator component 10, and a pump body component 30 connected with the rotor component 20.
[0073] The present application also provides a refrigeration equipment, which comprises a compressor 1, the specific structure of which is referred to the above embodiments, since the refrigeration equipment adopts all the technical solutions of 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.
[0074] The above is only an exemplary embodiment of the present application, and does not limit the patent scope of the present application, any equivalent structural transformation made by using the content of the present application specification and drawings, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.
Claims
1. An electric machine characterized in that, comprising a stator component; The stator component comprises a stator core comprising a plurality of stator laminations axially laminated therealong, a minimum radius of the stator laminations being R1, the stator laminations comprising a stator yoke and a plurality of stator teeth arranged inside the stator yoke, a minimum distance between tooth shoe portions of two adjacent stator teeth being L2, the stator yoke, the two adjacent stator teeth and the stator yoke and the two adjacent stator teeth enclosing a stator slot, a number of the stator slots being Q, 2. The electric machine of claim 1, wherein, 3. The electric machine of claim 1, wherein, 2mm ≤ L2 ≤ 4mm; and / or, 24mm ≤ R1 ≤ 35mm.
4. The electric machine of claim 1, wherein, The motor further comprises a rotor component arranged inside the stator component; the number of poles P of the rotor part, the maximum distance R2 between the slot bottom wall of the stator slot and the center of the stator lamination, the maximum radius R of the outer contour of the stator lamination 3, satisfies:
5. The electric machine of claim 4, wherein, 6. The electric machine of claim 4, wherein, 5mm ≤ R3-R2 ≤ 13mm; and / or, 24mm ≤ R1 ≤ 35mm; and / or, 40mm ≤ R3 ≤ 90mm.
7. The electric machine of claim 4, wherein, The stator tooth comprises a tooth portion and the tooth shoe portion, one end of the tooth portion is connected with the stator yoke, the other end is provided with the tooth shoe portion, the width of the tooth portion is L1, 8. The electric machine of claim 7, wherein, and / or, 4mm ≤ L1 ≤ 11mm.
9. The electric machine of claim 1, wherein, 15 ≤ Q ≤ 18; and / or, 10 ≤ P ≤ 12; and / or, the outer contour of the stator yoke is any one of a circle, a special shape.
10. The electric machine of claim 1, wherein, The number Q of the stator slots, the number p of poles of the rotor component, the number m of phases of the motor satisfy: 0 < Q / mP < 1.
11. A compressor characterized by, comprising a motor as claimed in any one of claims 1 to 10.
12. A refrigeration appliance characterized by, comprising a compressor as claimed in claim 11.