Motors, compressors and refrigeration equipment

Abstract

The present application discloses a motor, a compressor and a refrigeration device, which belongs to the technical field of motor manufacturing. The motor includes: a stator assembly, a rotor assembly and a housing, the stator assembly is sleeved on the rotor assembly, and the housing is sleeved on the stator assembly; the outer periphery of the stator assembly has a plurality of grooves, and contact portions are defined between adjacent grooves. The stator assembly also has teeth arranged at equal angles along the circumference, the number of teeth is C, the tooth width of the teeth is Bt, the sum of the arc lengths of the plurality of contact portions is L1, and satisfies: 1.35<L1 / (C*Bt)<2.1. According to the motor of the present application, the retention force between the stator assembly and the housing can be optimized for application in different motors, and the good flow field flow capacity between the stator assembly and the housing can be ensured, thereby improving the stiffness and modal characteristics of the motor, improving the running stability and vibration reduction and noise reduction performance of the motor, and ensuring the working efficiency of the motor. In addition, the motor can be prevented from working in an oversaturated condition, which can effectively improve the reliability and service life of the motor.

Description

Technical Field

[0001] The present application relates to the technical field of motor manufacturing, and in particular to a motor, a compressor and a refrigeration device. Background Art

[0002] In refrigeration equipment such as air conditioners and refrigerators, the compressor realizes energy transfer by compressing the refrigerant circulation. During this process, refrigeration oil lubrication is required to ensure the efficient operation of the motor and the pump body. In the related technology, a through hole is often designed between the stator and the housing of the motor to promote oil reflux, but due to the position and volume of the stator, the through hole is easy to hinder oil circulation, increasing the risk of vibration during the operation of the motor and the pump body. In addition, poor internal structure matching of the motor is also easy to cause high-frequency vibration. For example, the magnetic density matching of the teeth and yoke of the stator is unbalanced, resulting in oversaturation of the magnetic field density, thereby causing unbalanced magnetic pull of the magnetic field on the rotor, resulting in high-frequency vibration of the rotor during rotation. For example, insufficient holding force between the stator and the housing in the motor will also cause mechanical vibration. These vibrations will not only generate high-frequency noise and cause noise pollution, but also reduce the performance and operating stability of the motor, seriously affecting the working reliability and life of the motor. Summary of the invention

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the present application is to propose a motor, which can optimize the retention force between the stator assembly and the housing when applied to different motors, and ensure good flow field flow capacity between the stator assembly and the housing, thereby improving the stiffness and modal characteristics of the motor, improving the running stability and vibration and noise reduction performance of the motor, and ensuring the working efficiency of the motor. In addition, it can also prevent the motor from working in an oversaturated condition, which can effectively improve the reliability and service life of the motor.

[0004] The present application also provides a compressor having the above motor.

[0005] The present application also provides a refrigeration device having the above compressor.

[0006] According to the motor of the first aspect embodiment of the present application, the motor includes: a stator assembly, a rotor assembly and a casing, the stator assembly is sleeved on the rotor assembly, and the casing is sleeved on the stator assembly; wherein the outer periphery of the stator assembly has a plurality of groove portions, and contact portions are defined between adjacent groove portions, and the stator assembly also has teeth portions arranged at equal angles along the circumferential direction, the number of the teeth portions is C, the tooth width of the teeth portions is Bt, the sum of the arc lengths of the plurality of contact portions is L1, and satisfies: 1.35<L1 / (C*Bt)<2.1.

[0007] According to the motor of the present application, the retention force between the stator assembly and the motor housing when applied to different motors can be optimized by limiting the ratio range between the sum of the arc lengths of the contact portion and the sum of the tooth widths of the tooth portion, and a good flow field flow capacity between the stator assembly and the housing can be ensured, thereby improving the stiffness and modal characteristics of the motor, enhancing the operating stability and vibration and noise reduction performance of the motor, and ensuring the working efficiency of the motor. In addition, it can also ensure that the magnetic density of the stator assembly remains within a reasonable range, prevent the motor from operating in an oversaturated condition, and protect the motor from damage, thereby effectively improving the reliability and service life of the motor.

[0008] According to some embodiments of the present application, the contact portion includes: a first contact portion and a second contact portion, the central angle of the first contact portion is a1, the central angle of the second contact portion is a2, and the relationship a2<a1 is satisfied.

[0009] Further, the number of the first contact portions is C1, the number of the second contact portions is C2, and C1+C2<C is satisfied.

[0010] In some embodiments, the minimum radial dimension of the yoke in the area where the first contact portion is located is Bc, and satisfies: 1.9<L1 / (C*Bc)<3.1.

[0011] According to some embodiments of the present application, the inner diameter of the tooth portion is Di1, the outer diameter of the stator assembly is D1, and 209<L1 / D1*Di1<320 is satisfied.

[0012] In some embodiments, the axial dimension of the stator assembly is Lef, and satisfies: 3.2<L1 / Lef<6.

[0013] According to a compressor of an embodiment of the second aspect of the present application, the compressor includes: a motor according to any one of the above embodiments.

[0014] According to the refrigeration equipment of the embodiment of the third aspect of the present application, the refrigeration equipment includes: the compressor described in the above embodiment.

[0015] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 is a schematic diagram of the coordination between the stator assembly and the housing according to an embodiment of the present application;

[0018] Figure 2is a schematic diagram of a compressor according to an embodiment of the present application.

[0019] Reference numerals:

[0020] 1000. Compressor;

[0021] 10. stator assembly; 12. groove portion; 14. contact portion; 14a. first contact portion; 14b. second contact portion; 16. tooth portion; 18. yoke portion;

[0022] 20. Rotor assembly;

[0023] 30. Shell;

[0024] 200, crankshaft;

[0025] 300, main bearing;

[0026] 400, cylinder;

[0027] 500, piston;

[0028] 600. Auxiliary bearing. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0030] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0031] Reference to "embodiment" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments.

[0032] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0034] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0035] In the description of the present application, 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 application 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 application.

[0036] In the description of the present application, a first feature being “on” or “under” 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 with each other but are in contact with each other via another feature therebetween.

[0037] In the description of the present application, “above”, “over” and “above” a first feature to 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.

[0038] The term “plurality” used in this application refers to two or more (including two).

[0039] Reference below Figure 1 and Figure 2The motor, the compressor 1000 and the refrigeration device according to the embodiments of the present application are described.

[0040] like Figure 1 As shown, according to the motor of the first embodiment of the present application, the motor includes: a stator assembly 10, a rotor assembly 20 and a casing 30.

[0041] Among them, the stator assembly 10 is sleeved on the rotor assembly 20, and the housing 30 is sleeved on the stator assembly 10; the outer periphery of the stator assembly 10 has a plurality of groove portions 12, and contact portions 14 are defined between adjacent groove portions 12. The stator assembly 10 also has teeth portions 16 arranged at equal angles along the circumferential direction, the number of teeth portions 16 is C, the tooth width of the teeth 16 is Bt, the sum of the arc lengths of the plurality of contact portions 14 is L1, and satisfies: 1.35<L1 / (C*Bt)<2.1.

[0042] Specifically, the rotor assembly 20, the stator assembly 10 and the housing 30 are arranged in sequence from the inside to the outside in the radial direction. The stator assembly 10 can generate a magnetic field through electromagnetic induction, and the rotor assembly 20 and the magnetic field generated by the stator assembly 10 can cooperate to generate an electromagnetic torque, thereby realizing the operation of the motor. The housing 30 surrounds the stator assembly 10 and the rotor assembly 20, and can play a good role in fixing and protecting the stator assembly 10, the rotor assembly 20 and other components inside the motor. The outer periphery of the stator assembly 10 has a groove portion 12 that is recessed toward the axis direction of the stator assembly 10. The groove portion 12 is spaced apart from the housing 30 to form a certain space. This space can be used for the flow of liquids such as engine oil to provide cooling and lubrication for the motor. The number of the groove portions 12 is multiple, and the multiple groove portions 12 are evenly or unequally spaced along the circumferential direction of the outer periphery of the stator assembly 10. The portion between the groove portions 12 is the contact portion 14. A contact portion 14 is defined between two adjacent groove portions 12. The contact portion 14 is the stator. In the contactable area between the assembly 10 and the housing 30, during the operation of the motor, the contact portion 14 can contact the housing 30 in an intermittent manner, forming a good support, positioning and force dispersion effect; the stator assembly 10 has a plurality of teeth 16 on the side radially away from the housing 30, and the plurality of teeth 16 are arranged at equal angles in the circumferential direction of the stator assembly 10, and a part of the plurality of teeth 16 is radially opposite to the groove portion 12 on the outer periphery of the stator assembly 10, so as to optimize the force transmission path, enhance the contact force between the stator assembly 10 and the housing 30, and help to improve the overall stiffness of the motor.

[0043] It should be pointed out that each of the above-mentioned contact portions 14 has a certain length in the circumferential direction of the stator assembly 10, that is, the arc length of the contact portion 14, and the sum of the arc lengths of the multiple contact portions 14 is L1. The ratio range between the sum of the arc lengths L1 of the multiple contact portions 14 and the number C of the teeth 16 and the tooth width Bt of a single tooth 16 must satisfy 1.35<L1 / (C*Bt)<2.1, wherein C*Bt is the sum of the tooth widths of the multiple teeth 16, which is equivalent to the ratio of the sum of the arc lengths of the multiple contact portions 14 to the sum of the tooth widths of the multiple teeth 16 being set within a range greater than 1.35 and less than 2.1.

[0044] Table 1 Stator assembly related parameters of different motors

[0045]

[0046] For example, when the value of L1 / (C*Bt) is too small, such as the value of L1 / (C*Bt) of Comparative Example 1 in Table 1 is 1.25, the value of L1 / (C*Bt) of Comparative Example 2 is 1.26, the value of L1 / (C*Bt) of Comparative Example 3 is 1.31, and the value of L1 / (C*Bt) of Comparative Example 4 is 1.23, it is easy to cause insufficient holding force between the stator assembly 10 and the housing 30, reduce the stiffness and modal performance of the motor, increase the vibration and noise of the motor, and affect the running stability and life of the motor; when the value of L1 / (C*Bt) is too large, the arc length of the contact portion 14 is too long, and the magnetic flux density is easy to be too high, thereby causing the core material of the stator assembly 10 to operate in an oversaturated state or a state close to an oversaturated state. state, resulting in a significant decrease in the magnetic permeability of the core, resulting in a decrease in the transfer efficiency of the magnetic field energy, increasing the energy loss and heat generation of the motor, and, an excessively long arc length of the contact portion 14 will also occupy more space, reducing the layout space of the groove portion 12, thereby affecting the fluidity of the groove portion 12 for liquid circulation, resulting in poor heat dissipation effect of the motor, and reducing its long-term operation stability and reliability; and setting the value of L1 / (C*Bt) within a range greater than 1.35 and less than 2.1, for example, the value of L1 / (C*Bt) in Example 2 in Table 1 is 2.01, etc., then the magnetic density of the stator assembly 10 can be maintained within a reasonable range, and the stator assembly 10 and the housing 30 have good flow field flow capacity and good contact retention.

[0047] According to the motor of the present application, the retention force between the stator assembly 10 and the motor housing 30 when applied to different motors can be optimized by limiting the ratio range between the sum of the arc lengths of the contact portion 14 and the sum of the tooth widths of the tooth portion 16, and a good flow field flow capacity between the stator assembly 10 and the housing 30 can be ensured, thereby improving the stiffness and modal characteristics of the motor, enhancing the operating stability and vibration and noise reduction performance of the motor, and ensuring the working efficiency of the motor. In addition, it can also ensure that the magnetic density of the stator assembly 10 is maintained within a reasonable range, prevent the motor from operating in an oversaturated condition, and protect the motor from damage, thereby effectively improving the reliability and service life of the motor.

[0048] like Figure 1 As shown, according to some embodiments of the present application, the contact portion 14 includes: a first contact portion 14a and a second contact portion 14b, the center angle of the first contact portion 14a is a1, the center angle of the second contact portion 14b is a2, and the following condition is satisfied: a2<a1.

[0049] Specifically, the number of the first contact portion 14a and the number of the second contact portion 14b can be configured to be multiple, the center angle a1 corresponding to the first contact portion 14a is greater than the center angle a2 corresponding to the second contact portion 14b, so that the arc length of the first contact portion 14a is greater than the arc length of the second contact portion 14b, and a single first contact portion 14a occupies a relatively large peripheral area of ​​the stator assembly 10, and a single second contact portion 14b occupies a relatively small peripheral area of ​​the stator assembly 10, which helps to balance the contact force and fluidity between the stator assembly 10 and the housing 30, and optimize the overall mechanical properties, stiffness and working performance. In addition, the different center angles of the first contact portion 14a and the second contact portion 14b are also conducive to optimizing the path and distribution of the magnetic flux in the stator assembly 10. For example, the relatively large first contact portion 14a can guide more magnetic flux through certain specific areas, and the relatively small second contact portion 14b can be used for local adjustment or enhancement of the magnetic flux. In addition, by setting the first contact portion 14a and the second contact portion 14b to have different central angles, it is also beneficial to provide more possibilities for motor performance and improve the adaptability of the motor to different working conditions. For example, in applications where the motor requires high rigidity, the central angle a1 of the first contact portion 14a can be appropriately increased to provide more contact area and supporting force. In designs that require more flexibility or compactness, the central angle a2 of the second contact portion 14b can be reduced for adaptation.

[0050] In addition, in some specific embodiments of the present application, the number of first contact portions 14a is constructed to be consistent with the number of second contact portions 14b, and the first contact portions 14a and the second contact portions 14b are arranged adjacent to each other. For example, the number of first contact portions 14a and second contact portions 14b can be set to two or three, etc. This helps to maintain the symmetry of the motor structure and optimize the magnetic flux path, thereby improving the dynamic balance performance and efficiency of the motor.

[0051] like Figure 1 As shown, according to some embodiments of the present application, the number of the first contact portions 14a is C1, the number of the second contact portions 14b is C2, and C1+C2<C is satisfied.

[0052] Specifically, the sum of the number of the first contact portions 14a and the second contact portions 14b is less than the number of the teeth 16. For example, in some embodiments, the number of the teeth 16 may be 9, and the sum of the number of the first contact portions 14a and the second contact portions 14b may be 4 or 6. By defining C1+C2<C, on the one hand, it can be ensured that the teeth 16 of the stator assembly 10 occupy a dominant position, which is conducive to the improvement of the efficiency of the motor magnetic field distribution and energy conversion. At the same time, the intermittent contact between the reasonable number of first contact portions 14a and second contact portions 14b and the housing 30 can also improve the heat conduction path and the flow effect between the stator assembly 10 and the housing 30, and can improve the heat dissipation efficiency and operation reliability. On the other hand, by reducing the number of contact portions 14 in direct contact with the housing 30 (relative to the total number of teeth 16), the overall structure of the stator assembly 10 can be optimized, so that the stator assembly 10 can reduce unnecessary contact to reduce potential vibration noise and assembly difficulty while maintaining the necessary contact with the housing 30 to ensure stability.

[0053] like Figure 1 As shown, according to some embodiments of the present application, the minimum radial dimension of the yoke 18 in the area where the first contact portion 14 a is located is Bc, and satisfies: 1.9<L1 / (C*Bc)<3.1.

[0054] Specifically, multiple teeth 16 are connected by a yoke 18, and the yoke 18 can be divided into multiple yoke 18 segments arranged in sequence in the circumferential direction of the stator assembly 10, and a yoke 18 segment is arranged between every two adjacent teeth 16, so that the total number of yoke 18 segments is equal to the total number of teeth 16, wherein the minimum radial dimension of the yoke 18 in the area where the first contact portion 14a is located is Bc, and the minimum radial dimension of the yoke 18 here can be understood as the minimum thickness dimension of the yoke 18, and satisfies 1.9<L1 / (C*Bc)<3.1.

[0055] Table 2 Stator assembly related parameters of different motors

[0056]

[0057] Exemplarily, when the value of L1 / (C*Bt) is too small, such as the value of L1 / (C*Bt) of Comparative Example 1 in Table 2 is 1.71, the value of L1 / (C*Bt) of Comparative Example 2 is 1.3, the value of L1 / (C*Bt) of Comparative Example 3 is 1.8, and the value of L1 / (C*Bt) of Comparative Example 5 is 1.48, the holding force between the stator assembly 10 and the housing 30 will be reduced, the stiffness and modal performance of the motor will be reduced, the vibration and noise of the motor will increase, and the reliability of the motor operation will be reduced. At the same time, the yoke 18 will be too thick, which will increase the material cost and weight, and make the propagation path of the electromagnetic energy in the yoke 18 too long, thereby increasing the eddy current loss and the magnetic resistance loss, and reducing the electromagnetic efficiency of the motor. When the value of L1 / (C*Bt) is too large, it is easy to The magnetic flux density is too high, causing the motor to operate in an oversaturated condition, reducing the reliability of the motor. At the same time, the strength of the yoke 18 and the holding force of the stator assembly 10 in contact with the housing 30 cannot be guaranteed, further exacerbating the risk of motor vibration and damage. In the embodiment of the present application, by setting the value of L1 / (C*Bc) to a range greater than 1.9 and less than 3.1, for example, the value of L1 / (C*Bc) in Example 1 in Table 2 is 2.01 or the value of L1 / (C*Bc) in Example 2 is 3.02, etc., so that the ratio between the arc length of the contact portion 14 and the radial dimension of the yoke 18 (that is, the thickness dimension of the yoke 18) is set within a suitable range, the strength of the yoke 18 and the good holding force of the stator assembly 10 in contact with the housing 30 can be guaranteed, and the reliability and efficiency of the motor operation can be improved.

[0058] like Figure 1 As shown, according to some embodiments of the present application, the inner diameter of the tooth portion 16 is Di1, the outer diameter of the stator assembly 10 is D1, and 209<L1 / D1*Di1<320 is satisfied.

[0059] Specifically, the ratio of the inner diameter Di1 of the tooth portion 16 to the outer diameter D1 of the stator assembly 10 can be understood as the split ratio of the stator assembly 10 .

[0060] Table 3 Stator assembly related parameters of different motors

[0061]

[0062] By limiting the ratio of the sum of the arc lengths of the multiple contact portions 14 to the split ratio within the above range, for example, the value of L1 / D1*Di1 in Example 1 is 213.63 or the value of L1 / D1*Di1 in Example 2 is 317.91, etc., so that the arc length of the contact portion 14 and the inner diameter of the tooth portion 16 and the outer diameter of the stator assembly 10 have a suitable ratio range. On the one hand, a good size of the yoke 18 can be ensured, and the yoke 18 can be prevented from reaching an oversaturated state due to excessive magnetic density during the operation of the motor, thereby Avoid the resulting energy loss, heat generation and efficiency reduction problems; secondly, a reasonable split ratio and arc length range of the contact portion 14 are conducive to optimizing the magnetic field distribution of the stator assembly 10, reducing leakage flux and magnetic resistance, thereby improving the output power and efficiency of the motor; thirdly, by limiting the ratio of the sum of the arc lengths of multiple contact portions 14 to the split ratio within the above-mentioned range, it is also helpful to enhance the structural strength and rigidity of the stator assembly 10, improve the stator assembly 10's ability to resist mechanical stress, and thereby improve the working reliability and life of the stator assembly 10.

[0063] like Figure 1 As shown, according to some embodiments of the present application, the axial dimension of the stator assembly 10 is Lef, and satisfies: 3.2<L1 / Lef<6.

[0064] Specifically, the stator assembly 10 has a certain length in the axial direction. The axial dimension Lef of the stator assembly 10 can be understood as the thickness of the stator assembly 10 , and Lef and the sum of the arc lengths L1 of the plurality of contact portions 14 satisfy 3.2<L1 / Lef<6.

[0065] Table 4 Stator assembly related parameters of different motors

[0066]

[0067] By limiting the ratio of the sum of the arc lengths of the multiple contact portions 14 to the axial dimension of the stator assembly 10 within the above range, for example, as shown in Table 4, the L1 / Lef value of Example 1 and Example 3 is 4.03 or the L1 / Lef value of Example 2 is 6.04, etc. On the one hand, from the perspective of the thickness of the motor, the ratio range of the sum of the arc lengths of the multiple contact portions 14 to the axial dimension of the stator assembly 10 can ensure a reasonable match between the arc length of the contact portion 14 and the axial length of the stator assembly 10, which helps to maintain the stability and reliability of the motor during operation, while optimizing the holding force between the stator assembly 10 and the motor housing 30 and the flow field flow capacity; on the other hand, by limiting the ratio of the sum of the arc lengths of the multiple contact portions 14 to the axial dimension of the stator assembly 10 within the above range, the axial dimension of the stator assembly 10 and the arc length of the contact portion 14 are reasonable, and the magnetic flux path and magnetic flux density of the stator assembly 10 applied to different motors can also be optimized, and the overall performance of the motor is optimized, which is conducive to improving the performance and reliability of different motors under different working conditions.

[0068] like Figure 2 As shown, according to the compressor 1000 of the second aspect embodiment of the present application, the compressor 1000 includes: a motor of any one of the above embodiments. Since the compressor 1000 according to the second aspect embodiment of the present application is provided with the motor of any one of the above embodiments, the stator assembly 10 and the casing 30 in the motor of the compressor 1000 have good retention force and flow field flow capacity, and at the same time can prevent the motor from operating in an oversaturated condition, thereby improving the stiffness and modal performance of the motor, and can enhance the operating stability, reliability and vibration reduction and noise reduction performance of the motor, thereby optimizing the working performance and reliability of the compressor 1000.

[0069] In addition, in some specific embodiments of the present application, the compressor 1000 further includes: a crankshaft 200, a power unit, a main bearing 300, a cylinder 400, a piston 500, and a secondary bearing 600. Among them, one end of the crankshaft 200 is inserted into the rotor assembly 20 and connected to the rotor assembly 20, and the crankshaft 200 is also connected to the power unit, which is configured to drive the crankshaft 200 to rotate. When the power unit is working, it can drive the crankshaft 200 to rotate, and then drive the rotor assembly 20 to rotate; the main bearing 300, the cylinder 400, and the secondary bearing 600 are all sleeved on the outer periphery of the crankshaft 200, and are successively arranged away from the rotor assembly 20 in the axial direction of the crankshaft 200. The main bearing 300 and the secondary bearing 600 can be respectively at different positions of the crankshaft 200 to support the crankshaft 200 and reduce the friction and wear when it rotates, which helps to improve the running stability of the compressor 1000. A piston 500 is disposed in the cylinder 400 and is connected to the crankshaft 200. The rotation of the crankshaft 200 can drive the piston 500 to reciprocate in the cylinder 400, thereby ensuring that the compression work of the compressor 1000 is effectively completed and energy consumption is saved.

[0070] like Figure 1 and Figure 2 As shown, according to the refrigeration equipment of the embodiment of the third aspect of the present application, the refrigeration equipment includes: the compressor 1000 in the above embodiment, and the technical effect produced is consistent with that in the above embodiment, which will not be repeated here.

[0071] 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 present application. 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 may be combined in any one or more embodiments or examples in a suitable manner.

[0072] Although the embodiments of the present application 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 application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A motor, characterized in that: include: A stator assembly, a rotor assembly and a housing, wherein the stator assembly is sleeved on the rotor assembly, and the housing is sleeved on the stator assembly; wherein, The outer periphery of the stator assembly has a plurality of grooves, and contact portions are defined between adjacent grooves. The stator assembly also has teeth arranged at equal angles along the circumferential direction, the number of the teeth is C, the tooth width of the teeth is Bt, the sum of the arc lengths of the plurality of contact portions is L1, and the following conditions are satisfied: 1.35<L1 / (C*Bt)<2.1; The contact portion includes: a first contact portion and a second contact portion, the center angle of the first contact portion is a1, the center angle of the second contact portion is a2, and the following conditions are satisfied: a2<a1; The minimum radial dimension of the yoke portion in the area where the first contact portion is located is Bc, and satisfies: 1.9<L1 / (C*Bc)<3.

1.

2. The motor according to claim 1, characterized in that The number of the first contact portions is C1, the number of the second contact portions is C2, and C1+C2<C is satisfied.

3. The motor according to claim 1, characterized in that The inner diameter of the tooth portion is Di1, the outer diameter of the stator assembly is D1, and 209<L1 / D1*Di1<320 is satisfied.

4. The motor according to claim 1, characterized in that The axial dimension of the stator assembly is Lef, and satisfies: 3.2<L1 / Lef<6.

5. A compressor, characterized in that: include: The motor according to any one of claims 1 to 4.

6. A refrigeration device, characterized in that: include: The compressor as claimed in claim 5.

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