Magnetic shoe fixing frame, rotor assembly, motor and heating and ventilation equipment

Abstract

The utility model discloses a magnetic shoe fixing frame, rotor assembly, motor and heating and ventilation equipment, the magnetic shoe fixing frame comprises an upper cover plate, a lower bottom plate and a plurality of division bars, the upper cover plate and the lower bottom plate are distributed along the axial direction of the magnetic shoe fixing frame, and the plurality of division bars are connected with the upper cover plate and the lower bottom plate and are distributed along the circumferential direction of the magnetic shoe fixing frame. The upper cover plate comprises a first check ring, a second check ring and a third check ring which are distributed from inside to outside in the radial direction of the magnetic shoe fixing frame. A first groove with an opening deviating from the lower bottom plate in the axial direction is formed between the first check ring and the second check ring. A second groove with an opening facing the lower bottom plate in the axial direction is formed between the second check ring and the third check ring. According to the magnetic shoe fixing frame provided by the embodiment of the utility model, the plurality of division bars distributed along the circumferential direction are arranged on the magnetic shoe fixing frame, so that the stability of the assembled magnetic shoe can be improved, and the magnetic shoe can be conveniently mounted on the magnetic shoe fixing frame. In addition, the groove structure formed by the upper cover plate can improve the waterproof and sealing effects after the magnetic shoe fixing frame is assembled.

Description

Technical Field

[0001] The utility model relates to the technical field of HVAC equipment, in particular to a magnetic tile fixing frame, a rotor assembly, a motor and HVAC equipment. Background Art

[0002] The rotor of the outer rotor motor is set on the outer ring of the stator, and the magnetic tiles of the rotor are evenly distributed in the circumferential direction. The uniformity of the magnetic tiles has a great influence on the performance, efficiency, and cogging torque of the motor. Therefore, it is necessary to improve the uniformity of the distribution of the magnetic tiles in the circumferential direction. In addition, water vapor will be generated during the use of the outer rotor, resulting in problems such as the motor not being able to operate normally or being damaged. Utility Model Content

[0003] One purpose of the utility model is to provide a magnetic tile fixing frame, which can facilitate the arrangement of magnetic tiles on the magnetic tile fixing frame along the circumferential direction, and the upper cover plate is constructed with grooves, so that the magnetic tile fixing frame can have a certain waterproof effect after assembly.

[0004] Another object of the present invention is to provide a rotor assembly, including the aforementioned magnetic shoe fixing frame.

[0005] Another object of the present invention is to provide a motor, comprising the aforementioned rotor assembly.

[0006] Another object of the present invention is to provide a HVAC device, comprising the aforementioned motor.

[0007] According to the embodiment of the utility model, the magnetic tile fixing frame includes an upper cover plate, a lower base plate and a plurality of spacer strips, the upper cover plate and the lower base plate are distributed along the axial direction of the magnetic tile fixing frame, the plurality of spacer strips connect the upper cover plate and the lower base plate, and are distributed along the circumference of the magnetic tile fixing frame, the upper cover plate includes a first retaining ring, a second retaining ring and a third retaining ring distributed from the inside to the outside along the radial direction of the magnetic tile fixing frame, a first groove is formed between the first retaining ring and the second retaining ring, the first groove having an opening away from the lower base plate along the axial direction; a second groove is formed between the second retaining ring and the third retaining ring, the second groove having an opening toward the lower base plate along the axial direction.

[0008] According to the magnetic tile fixing frame of the embodiment of the utility model, the magnetic tile fixing frame is provided with a plurality of spacers distributed along the circumferential direction, which can improve the stability of the magnetic tiles after assembly and facilitate the distribution of the magnetic tiles on the magnetic tile fixing frame. In addition, the groove structure constructed by the upper cover plate can improve the waterproof and sealing effect after the magnetic tile fixing frame is assembled.

[0009] In addition, the magnetic tile fixing frame according to the above embodiment of the utility model may also have the following additional technical features:

[0010] In some examples of the present invention, the first retaining ring and the second retaining ring are radially spaced apart to form the first groove, and the spacer connects one side of the first retaining ring and the second retaining ring close to the lower base plate.

[0011] In some examples of the present invention, the second retaining ring and the third retaining ring are radially spaced apart to form the second groove, and the upper cover plate further includes a plate portion connected to a side of the second retaining ring and the third retaining ring that is away from the lower base plate.

[0012] In some examples of the present invention, the outer diameter of the lower base plate is not greater than the radial dimension of the outer edges of the plurality of spacers relative to the axis of the magnetic tile fixing frame.

[0013] In some examples of the present invention, the radial dimension of the outer edge of the spacer relative to the axis of the magnetic tile fixing frame is not less than the inner diameter dimension of the second retaining ring.

[0014] In some examples of the present invention, the radial dimension of the inner edge of the spacer relative to the axis of the magnetic tile fixing frame is not less than the inner diameter dimension of the first retaining ring.

[0015] In some examples of the present invention, the radial dimension of the inner edge of the partition bar relative to the axis of the magnetic tile fixing frame is not less than the inner diameter dimension of the lower base plate.

[0016] In some examples of the present invention, the outer diameter of the upper cover plate is greater than the outer diameter of the lower base plate, and the outer diameter of the partition bar is not greater than the outer diameter of the lower base plate.

[0017] In some examples of the present invention, the magnetic tile fixing frame is integrally injection molded.

[0018] In some examples of the present invention, the first retaining ring extends out of the second retaining ring along the axial direction of the magnetic tile fixing frame in a direction away from the lower base plate.

[0019] According to the rotor assembly of the embodiment of the utility model, it includes: the aforementioned magnetic tile fixing frame, magnetic tiles, rotor shaft, and casing, wherein the magnetic tiles are positioned on the magnetic tile fixing frame; the rotor shaft passes through the magnetic tile fixing frame and extends along the axial direction; the casing is respectively connected to the magnetic tile fixing frame and the rotor shaft.

[0020] According to the rotor assembly of the embodiment of the utility model, by providing the aforementioned magnetic tile fixing frame in the rotor assembly, the stability of the operation of the rotor assembly can be improved, and the stability and tightness of the assembly between the magnetic tile fixing frame and the casing can also be improved.

[0021] In some examples of the present invention, the housing includes a peripheral wall and a bottom wall, the peripheral wall surrounds the magnetic tile fixing frame, one end of the peripheral wall along the axial direction is connected to the bottom wall and the other end is open, wherein the opening periphery of the peripheral wall is arranged in the second groove.

[0022] In some examples of the present invention, the opening periphery of the peripheral wall is sealed and connected to the upper cover plate.

[0023] In some examples of the present invention, the peripheral wall and the partition bar are loosely matched.

[0024] In some examples of the present invention, the circumferential wall includes a first section of a circular ring and a second section of a circular ring distributed in the axial direction, the second section of the circular ring is connected to the bottom wall, the first section of the circular ring is connected to the second section of the circular ring, the inner diameter of the first section of the circular ring is larger than the inner diameter of the second section of the circular ring, and the first section of the circular ring is inserted into the second groove.

[0025] In some examples of the present invention, the rotor shaft includes a first mating section, a main body section and a second mating section along the axial direction, and the first mating section and the second mating section are respectively connected to the two ends of the main body section, wherein the diameter D1 of the first mating section, the diameter D2 of the main body section and the diameter D3 of the second mating section satisfy D1≤D3, or D1<D2, or D3<D2, or D1≤D3<D2.

[0026] In some examples of the present invention, an annular groove for accommodating a retaining ring is provided at one end of the main body segment close to the first mating segment.

[0027] In some examples of the present invention, a coating is provided on the bearing position of the main body section.

[0028] The motor according to the embodiment of the utility model comprises: a stator assembly and the aforementioned rotor assembly, wherein the stator assembly is rotatably connected to the rotor assembly.

[0029] According to the motor of the embodiment of the utility model, by applying the aforementioned rotor assembly in the motor, the stability of the motor operation and the waterproof effect can be improved.

[0030] In some examples of the present invention, the stator assembly includes a fixing plate, and at least a portion of a lower periphery of the fixing plate extends into the first groove.

[0031] The HVAC equipment according to the embodiment of the utility model includes the aforementioned motor.

[0032] According to the HVAC equipment of the embodiment of the utility model, the stability and reliability of the operation of the HVAC equipment can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the structure of the magnetic tile fixing frame in some embodiments of the utility model;

[0034] Figure 2 is a cross-sectional view of a magnetic tile fixing frame in some embodiments of the utility model;

[0035] Figure 3 is a top view of a magnetic tile fixing frame in some embodiments of the utility model;

[0036] Figure 4 It is an enlarged view of the partial structure of the rotor assembly in some embodiments of the utility model;

[0037] Figure 5 is a cross-sectional view of a housing in some embodiments of the utility model;

[0038] Figure 6 It is a schematic diagram of the structure of the casing in some embodiments of the utility model;

[0039] Figure 7 is a schematic diagram of the structure of the rotor shaft in some embodiments of the utility model;

[0040] Figure 8 It is a schematic diagram of the structure of the rotor assembly in some embodiments of the utility model;

[0041] Fig. 9 It is an exploded view of the rotor assembly in some embodiments of the present invention.

[0042] Reference numerals:

[0043] 10. Magnetic tile fixing frame; 11. Upper cover plate; 12. Lower base plate; 13. Spacer; 111. First retaining ring; 112. Second retaining ring; 113. Third retaining ring; 114. Plate; 101. First groove; 102. Second groove; 14. Magnetic tile; 20. Casing; 21. Bottom wall; 22. Peripheral wall; 221. First section of circular ring; 222. Second section of circular ring; 23. Shaft seat; 24. Flange; 30. Rotor shaft; 31. First matching section; 32. Second matching section; 301. Annular groove; 33. Main body section; 331. First bearing position; 332. Second bearing position; 40. Fixing plate; 50. Fan; 51. Upper plate; 52. Lower plate; 53. Blades; 60. Screws; 100. Rotor assembly. DETAILED DESCRIPTION

[0044] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0045] Combination Figures 1 to 9 According to the embodiment of the utility model, the magnetic tile fixing frame 10 includes an upper cover plate 11, a lower bottom plate 12 and a plurality of spacers 13. The upper cover plate 11 and the lower bottom plate 12 are distributed along the axial direction of the magnetic tile fixing frame 10. The plurality of spacers 13 connect the upper cover plate 11 and the lower bottom plate 12 and are distributed along the circumferential direction of the magnetic tile fixing frame 10. Specifically, an accommodation space can be constructed between the upper cover plate 11, the lower bottom plate 12 and the spacers 13, and the magnetic tile 14 can be accommodated in the accommodation space. The plurality of spacers 13 can separate a plurality of accommodation spaces in the magnetic tile fixing frame 10. The plurality of spacers 13 arranged along the circumferential direction separate the plurality of magnetic tiles 14, thereby realizing the distribution of the magnetic tiles 14 on the magnetic tile fixing frame 10, and the structural stability is strong. The spacers 13 can also limit the magnetic tiles 14 in the circumferential direction, and the upper cover plate 11 and the lower bottom plate 12 can limit the magnetic tiles 14 in the axial direction, thereby improving the stability of the magnetic tiles 14 after assembly.

[0046] Furthermore, combined with Figure 2 The upper cover plate 11 includes a first retaining ring 111, a second retaining ring 112 and a third retaining ring 113 which are distributed from the inside to the outside along the radial direction of the magnetic tile fixing frame 10. A first groove 101 with an opening axially away from the lower bottom plate 12 is formed between the first retaining ring 111 and the second retaining ring 112; a second groove 102 with an opening axially facing the lower bottom plate 12 is formed between the second retaining ring 112 and the third retaining ring 113. Specifically, when the magnetic tile fixing frame 10 is assembled on the rotor, the magnetic tile fixing frame 10 needs to be accommodated in the housing 20. During assembly, the second groove 102 faces the casing 20. The second groove 102 can be used to form a seal at the connection with the casing 20. The opening directions of the first groove 101 and the second groove 102 are opposite. The first groove 101 can form a water retaining structure when the magnetic tile fixing frame 10 cooperates with other components. For example, a water retaining effect is achieved when the magnetic tile fixing frame 10 is connected to a plate or a fixing plate 40. Taking the cooperation between the magnetic tile fixing frame 10 and the fixing plate 40 as an example, a part of the fixing plate 40 can be embedded in the first groove 101. After assembly, the first retaining ring 111, the fixing plate 40 and the second retaining ring 112 are distributed radially. When water vapor is generated, the water vapor needs to pass through a circuitous channel to enter the motor 1000, thereby forming a maze-like waterproof structure. The magnetic tile fixing frame 10 of the present application can achieve sealing and waterproof effects when the magnetic tile fixing frame 10 is assembled by arranging a first retaining ring 111, a second retaining ring 112 and a third retaining ring 113 on the upper cover plate 11, and forming a groove through the cooperation between the retaining rings, which is conducive to simplifying the structure and reducing costs.

[0047] According to the magnetic tile fixing frame 10 of the embodiment of the utility model, by providing a plurality of circumferentially distributed spacers 13 on the magnetic tile fixing frame 10, the stability of the magnetic tile 14 after assembly can be improved, which is conducive to the distribution of the magnetic tile 14 on the magnetic tile fixing frame 10. In addition, the groove structure constructed by the upper cover plate 11 can improve the waterproof and sealing effects after the magnetic tile fixing frame 10 is assembled.

[0048] In addition, the plurality of spacers 13 in the present invention can be arranged to be evenly spaced along the circumferential direction, so that the plurality of magnetic tiles 14 are evenly spaced along the circumferential direction on the magnetic tile fixing frame 10 .

[0049] Combination Figure 1 and Figure 2 In some embodiments of the utility model, the first retaining ring 111 and the second retaining ring 112 are separated radially to form the first groove 101, and the spacer 13 connects the first retaining ring 111 and the second retaining ring 112 on one side close to the lower bottom plate 12. Specifically, since the upper cover plate 11 of the magnetic tile fixing frame 10 is not sealed with other components, the first groove 101 can be a through groove with openings on both sides, and the spacer 13 is connected to the first retaining ring 111 and the second retaining ring 112, and the spacer 13 can be directly connected to the upper cover plate 11, which is conducive to simplifying the structure, and the spacer 13 can also play the effect of supporting the upper cover plate 11.

[0050] In addition, the first retaining ring 111 and the second retaining ring 112 in the present invention can form the first groove 101 in other ways, for example, the first retaining ring 111 and the second retaining ring 112 can be connected, and at least a portion of the gap between the first retaining ring 111 and the second retaining ring 112 is increased in the direction away from the lower bottom plate 12 in the axial direction, so as to form the aforementioned first groove 101. Of course, the above description of the first retaining ring 111 and the second retaining ring 112 cooperating to form the first groove is only some embodiments of the present invention, and is not intended to limit the protection scope of the present invention.

[0051] Combination Figure 2 and Figure 4In some embodiments of the utility model, the second retaining ring 112 and the third retaining ring 113 are radially spaced apart to form a second groove 102, and the upper cover plate 11 further includes a plate portion 114, and the plate portion 114 is connected to the second retaining ring 112 and the third retaining ring 113 on the side away from the lower base plate 12, thereby, the second retaining ring 112, the third retaining ring 113 and the plate portion 114 jointly form a second groove 102 with one end closed and the other end open, and the opening of the second groove 102 faces the lower base plate 12. Therefore, when assembling the magnetic tile fixing frame 10, the second groove 102 can cooperate with the housing 20, so that the housing 20 or other connecting structure can at least partially extend into the second groove 102, thereby improving the tightness of the connection, and can also form a seal in the second groove 102, for example, by interference fit between the connecting member and the second groove 102, or by providing a sealing ring in the second groove 102.

[0052] Combination Figure 1 and Figure 2 In some embodiments of the utility model, the outer diameter of the lower bottom plate 12 is not greater than the radial dimension of the outer edges of the plurality of spacers 13 relative to the axis of the magnetic tile fixing frame 10. Specifically, the lower bottom plate 12 is annular, and the radius of the lower bottom plate 12 is not greater than the dimension from the outer edges of the spacers 13 to the axis of the magnetic tile fixing frame 10, so that the outer edges of the spacers 13 protrude from the outer periphery of the lower bottom plate 12, which can facilitate the assembly of the magnetic tile fixing frame 10. According to a magnetic tile fixing frame 10 of a specific embodiment of the utility model, the outer diameter of the lower bottom plate 12 is equal to the radial dimension of the outer edges of the plurality of spacers 13 relative to the axis of the magnetic tile fixing frame 10, so that the outer periphery of the lower bottom plate 12 can be flush with the outer edge of the magnetic tile fixing frame 10, which can facilitate manufacturing and assembly.

[0053] In some embodiments of the present invention, the radial dimension of the outer edge of the partition bar 13 relative to the axis of the magnetic tile fixing frame 10 is not less than the inner diameter dimension of the second retaining ring 112, that is, the dimension from the outer edge of the partition bar 13 to the axis of the magnetic tile fixing frame 10 is not less than the radius of the second retaining ring 112. Therefore, the outer peripheral edge of the second retaining ring 112 can be flush with the outer edge of the partition bar 13 or protrude relative to the outer edge of the partition bar 13, which can facilitate the cooperation between the second retaining ring 112 and other components for easy assembly, and the partition bar 13 can also play a role in supporting the second retaining ring 112.

[0054] In some embodiments of the present invention, the radial dimension of the inner edge of the spacer bar 13 relative to the axis of the magnetic tile fixing frame 10 is not less than the inner diameter dimension of the first retaining ring 111. The distance from the inner edge of the spacer bar 13 to the axis of the magnetic tile fixing frame 10 is not less than the radius of the first retaining ring 111, so that the spacer bar 13 can be connected to the first retaining ring 111, and the spacer bar 13 can also play the effect of supporting the first retaining ring 111.

[0055] In some embodiments of the present invention, the radial dimension of the inner edge of the spacer bar 13 relative to the axis of the magnetic tile fixing frame 10 is not less than the inner diameter dimension of the lower bottom plate 12. In other words, the inner edge of the spacer bar 13 does not protrude from the inner edge of the lower bottom plate 12, which can prevent the spacer bar 13 from interfering with other components.

[0056] In some embodiments of the present invention, the outer diameter of the upper cover plate 11 is larger than the outer diameter of the lower base plate 12, and the outer diameter of the partition bar 13 is not larger than the outer diameter of the lower base plate 12. Therefore, the partition bar 13 and the lower base plate 12 are easily assembled into the casing 20, and the upper cover plate 11 with a larger outer diameter can cooperate with the casing 20 to improve the tightness of the connection and facilitate quick positioning and assembly.

[0057] In some embodiments of the present invention, the magnetic tile fixing frame 10 is integrally injection molded, which can improve the overall stability of the magnetic tile fixing frame 10 and facilitate manufacturing.

[0058] Combination Figure 2 and Figure 4 In some embodiments of the utility model, the first retaining ring 111 extends out of the second retaining ring 112 along the axial direction of the magnetic tile fixing frame 10 in a direction away from the lower base plate 12. According to the above, when the fixing plate 40 extends into the first groove 101 between the first retaining ring 111 and the second retaining ring 112, a circuitous structure is formed, thereby constructing a labyrinth waterproof structure, so that water vapor is not easy to pass over the fixing plate 40 or the second retaining ring 112 to enter the motor. Furthermore, the length of the first retaining ring 111 extending in the axial direction is greater than that of the second retaining ring 112, which can make the above-mentioned labyrinth waterproof structure more complicated. When the length of the first retaining ring 111 is longer, it is more difficult for water vapor to pass over the first retaining ring 111 to enter the motor, thereby further improving the waterproof effect.

[0059] Combination Figure 8 and Fig. 9 According to the rotor assembly 100 of the embodiment of the utility model, it includes: the aforementioned magnetic tile fixing frame 10, magnetic tile 14, rotor shaft 30 and housing 20, the magnetic tile 14 is positioned on the magnetic tile fixing frame 10; the rotor shaft 30 is passed through the magnetic tile fixing frame 10 and extends in the axial direction; the housing 20 is respectively connected to the magnetic tile fixing frame 10 and the rotor shaft 30. That is, the magnetic tile fixing frame 10 is accommodated in the housing 20, the magnetic tile 14 can be positioned between the magnetic tile fixing frame 10 and the housing 20, and the rotor shaft 30 is also provided in the housing 20.

[0060] According to the aforementioned magnetic tile fixing frame 10, the uniformity of the circumferential distribution of the magnetic tiles 14 can be improved, so that the motor operation is more stable and reliable when the rotor assembly 100 is running. In addition, the second groove 102 of the magnetic tile fixing frame 10 can facilitate the connection between the magnetic tile fixing frame 10 and the housing 20, facilitate rapid positioning, and help improve assembly tightness.

[0061] According to the rotor assembly 100 of the embodiment of the utility model, by setting the aforementioned magnetic tile fixing frame 10 in the rotor assembly 100, the stability of the operation of the rotor assembly 100 can be improved, and the stability and tightness of the assembly between the magnetic tile fixing frame 10 and the casing 20 can also be improved.

[0062] Combination Figure 5 and Figure 6 In some embodiments of the present invention, the housing 20 includes a peripheral wall 22 and a bottom wall 21, the peripheral wall 22 surrounds the magnetic tile fixing frame 10, one end of the peripheral wall 22 along the axial direction is connected to the bottom wall 21 and the other end is open, wherein the opening periphery of the peripheral wall 22 is arranged in the second groove 102. During assembly, the upper cover plate 11 of the magnetic tile fixing frame 10 can cooperate with the opening periphery of the peripheral wall 22 of the housing 20, and the cooperation between the opening periphery of the peripheral wall and the inner side surface of the second groove 102 is utilized to achieve a relatively static seal between the peripheral wall and the magnetic tile fixing member 10, for example, the opening periphery of the peripheral wall 22 can extend into the second groove 102, which can achieve rapid positioning and improve the overall structural stability of the rotor assembly 100.

[0063] Furthermore, in some embodiments of the present invention, the opening periphery of the peripheral wall 22 is sealed and connected to the upper cover plate 11. For example, a sealing structure such as a sealing ring can be provided in the second groove 102, and the opening periphery of the magnetic tile fixing frame 10 is abutted against the sealing ring to achieve sealing. In addition, sealing can also be achieved by a sealing structure constructed between the opening periphery of the peripheral wall 22 and the inner side surface of the second groove 102, or other methods can be used to achieve sealing cooperation between the peripheral wall 22 and the magnetic tile fixing frame 10.

[0064] Combination Figure 8 In some embodiments of the present invention, the peripheral wall 22 and the spacer bar 13 are gap-matched. During assembly, the spacer bar 13 does not contact the peripheral wall 22 of the housing 20, so that the magnetic tile fixing frame 10 can enter the housing 20 more smoothly and quickly, which is conducive to improving assembly efficiency. In addition, when the motor is running, there can also be a gap between the magnetic tile 14 and the housing 20 to improve the rotation effect.

[0065] Combination Figure 5In some embodiments of the utility model, the peripheral wall 22 includes a first section of a circular ring 221 and a second section of a circular ring 222 distributed in the axial direction, the second section of the circular ring 222 is connected to the bottom wall 21, the first section of the circular ring 221 is connected to the second section of the circular ring 222, and the inner diameter of the first section of the circular ring 221 is greater than the inner diameter of the second section of the circular ring 222, thereby a step structure can be constructed at the opening periphery of the peripheral wall 22 of the housing 20 to be suitable for matching with the upper cover plate 11 of the magnetic tile fixing frame 10. Specifically, the first section of the circular ring 221 can be inserted into the second groove 102 to achieve the connection between the housing 20 and the magnetic tile fixing frame 10. Through the step formed between the first section of the circular ring 221 and the second section of the circular ring 222, the peripheral wall 22 can be used to provide support for the magnetic tile fixing frame 10 to maintain the structural strength and stability of the rotor assembly.

[0066] Furthermore, the inner diameter difference between the second section circular ring 222 and the first section circular ring 221 may be equal to the radial thickness of the second baffle, so that when the first section circular ring 221 is inserted into the second groove 102 , the second baffle 112 may be flush with the second section circular ring 222 .

[0067] According to the rotor assembly 100 of the embodiment of the utility model, during assembly, the bottom of the magnetic tile 14 is supported on the lower base plate 12 of the magnetic tile fixing frame 10, and the spacer 13 has a limiting effect on the two sides of the magnetic tile 14 in the circumferential direction. Alternatively, the spacer 13 of the magnetic tile fixing frame 10 and the two sides of the magnetic tile 14 are gap-fitted. In other words, the magnetic tile 14 and the magnetic tile fixing frame 10 can be in the form of low contact or gap-fitted. The outer wall surface of the magnetic tile 14 protrudes from the magnetic tile fixing frame 10, which can prevent the magnetic tile fixing frame 10 from deforming, especially when the magnetic tile fixing frame 10 is a plastic part, the durability of the magnetic tile fixing frame 10 can be improved. The outer wall of the magnetic tile 14 is bonded to the inner wall of the casing 20 (or the second section of the circular ring 222).

[0068] Combination Figure 7 and Figure 8In some embodiments of the utility model, the rotor shaft 30 includes a first mating section 31, a main body section 33, and a second mating section 32 along the axial direction. The first mating section 31 and the second mating section 32 are respectively connected to the two ends of the main body section 33, wherein the diameter of the first mating section 31 is D1, the diameter of the main body section 33 is D2, and the diameter of the second mating section 32 is D3, and D1, D2, and D3 satisfy or D1<D2, or D3<D2, or D1≤D3<D2. Specifically, the diameter of the first mating section 31 is small, which plays a guiding role, can achieve the effect of positioning and facilitating assembly. For example, in the process of installing the retaining spring to the rotor shaft 30, the retaining spring can enter from the first mating section 31 with the smallest diameter. Therefore, D1<D2 facilitates assembly and improves assembly efficiency. The second mating section 32 is connected to the housing 20, and the diameter of the second mating section 32 is smaller than that of the main body section 33. Therefore, D3<D2 can play a pre-positioning role, facilitate rapid assembly, improve assembly stability, and also play a protective role. Specifically, when the rotor shaft 30 is installed, the second mating section 32 can form a step shape at the bottom of the shaft, so as to achieve a pre-positioning effect. When a shaft seat 23 is provided in the housing 20, the second mating section 32 extends into the shaft seat 23 and is perpendicular to the shaft seat 23, which can improve the rotation efficiency. The diameter of the second mating section 32 can also be less than or equal to the diameter of the first mating section 31. It can also be that D1≤D3<D2, that is, the diameter size of D3 is between D1 and D2, that is, the diameter D3 of the second mating section 32 is smaller than the diameter D2 of the main section 33, but not smaller than the diameter D1 of the first mating section 31, that is, the diameter of the second mating section 32 does not need to be too small, which can ensure the stability of the rotor shaft 30 and the shaft seat, and avoid loosening or shaking during rotation.

[0069] According to a specific rotor shaft 30 of the present invention, the diameter of the main body section 33 is greater than the diameter of the second matching section 32 , and the diameter of the second matching section 32 is greater than the diameter of the first matching section 31 .

[0070] Combination Figure 7 In some embodiments of the utility model, an annular groove 301 for placing a retaining spring is provided at one end of the main body section 33 close to the first mating section 31. Combined with the foregoing, since the diameter of the first mating section 31 is smaller than that of the main body section 33, the retaining spring can easily enter the annular groove of the main body section 33 directly from the first mating section 31, which can facilitate the installation of the retaining spring. During the installation of the retaining spring, the retaining spring is not subjected to force during installation, which can protect the retaining spring. No external tools are required during installation, which is conducive to improving assembly efficiency.

[0071] In some embodiments of the utility model, a coating is provided on the bearing position of the main section 33. The coating can effectively reduce the shaft voltage, thereby reducing the harm of electrical corrosion of the bearing and increasing the bearing life. In addition, the coating can also reduce the friction coefficient between the bearings or reduce the friction noise, prevent jamming, improve the operation flexibility, and improve the stability and wear resistance of the rotor shaft 30 during use. For example, the coating can be made of ceramic coating material or non-metallic coating material. Specifically, in combination with Figure 7 and Figure 8 A first bearing position 331 and a second bearing position 332 are provided on the main body section 33 . The first bearing position 331 is located at the upper part of the main body section 33 in the axial direction, close to the annular groove 301 , and the second bearing position 332 is provided at the upper end of the shaft seat 23 .

[0072] Furthermore, combined with Figure 8 and Fig. 9 The rotor assembly 100 also includes a fan 50, which includes an upper plate 51, blades 53 and a lower plate 52, wherein the blades 53 are arranged between the upper plate 51 and the lower plate 52, and the outer wall of the second section of the circular ring 222 is connected to the flange 24, and the lower plate is connected to the end surface of the flange 24 in a stacked manner.

[0073] The rotor assembly 100 is a very important core component in the motor. Problems such as the installation accuracy of the magnetic tile 14, the installation accuracy of the rotor shaft 30, and the electrical corrosion of the bearings will have a great impact on the performance of the motor. Therefore, if the installation accuracy of the magnetic tile 14 in the circumferential direction is poor, it will cause a large cogging torque of the motor and affect the efficiency of the motor. To this end, the utility model proposes a magnetic tile fixing frame 10, which can effectively ensure that the magnetic tile 14 is evenly distributed in the circumferential direction, and is simple to install and easy to operate. In addition, the structure of the rotor shaft 30 of the utility model can ensure that the coaxiality of the rotor shaft 30 and the housing 20 is good after installation, and the rotor shaft 30 is coated with non-metallic materials at the bearing position, which can effectively reduce the problem of electrical corrosion of the bearings.

[0074] The following describes a magnetic tile fixing frame 10, a rotor assembly 100 and a motor according to a specific embodiment with reference to the accompanying drawings. Figures 1 to 9The magnetic tile fixing frame 10 includes an upper cover plate 11, a lower base plate 12 and a plurality of spacers 13, and the spacers 13 connect the upper cover plate 11 and the lower base plate 12 together. The upper cover plate 11 of the magnetic tile fixing frame 10 includes a first retaining ring 111, a second retaining ring 112 and a third retaining ring 113, and a first groove 101 is formed between the first retaining ring 111 and the second retaining ring 112, and the opening of the first groove 101 faces upward. A second groove 102 is formed between the second retaining ring 112 and the third retaining ring 113, and the opening of the second groove 102 faces downward. The first retaining ring 111 and the second retaining ring 112 are connected together only by the spacers 13, and other positions are hollowed out. The rotor shaft 30 includes a first mating section 31, a main section 33, and a second mating section 32. The main section 33 is located in the middle of the rotor shaft 30, connecting the first mating section 31 and the second mating section 32 together. The diameter of the first mating section 31 is D1, the diameter of the main section 33 is D2, and the diameter of the second mating section 32 is D3, and the relationship is D1≤D3<D2. An annular groove 301 is provided between the first mating section 31 and the main section 33, which can be used to place a retaining ring. The main section 33 is provided with a first bearing position 331 and a second bearing position 332. The first bearing position 331 and the second bearing position 332 are plated, and ceramic coating materials or other non-metallic coating materials are used.

[0075] The rotor assembly 100 includes a magnetic tile fixing frame 10, a rotor shaft 30, a magnetic tile 14, a casing assembly, a fan 50 and a screw 60. The magnetic tile 14 is arranged between two adjacent spacers 13 of the magnetic tile fixing frame 10, and the number of the magnetic tiles 14 is the same as the number of the spacers 13. The casing assembly includes a casing 20, a shaft seat 23 and a flange 24. The casing 20 is composed of a bottom wall 21 and a peripheral wall 22 extending upward from the bottom wall 21. A through hole is provided in the middle of the bottom wall 21 of the casing 20, and the peripheral wall 22 is composed of two upper and lower circular rings, namely a first section circular ring 221 and a second section circular ring 222, and the inner diameter of the first section circular ring 221 is larger than the inner diameter of the second section circular ring 222, and the outer diameters of the two are the same. The shaft seat 23 is arranged in the through hole in the middle of the bottom wall 21 of the casing 20, and the two are fixed together by welding. The flange 24 is connected to the outer wall surface of the peripheral wall 22 of the casing 20. A plurality of through holes are provided on the upper plate 51 of the fan 50 , and the through holes correspond to the threaded holes on the end surface of the flange 24 one by one, and are fastened together by screws 60 .

[0076] The utility model further provides a motor. The motor according to the embodiment of the utility model comprises a stator assembly and the aforementioned rotor assembly 100. The stator assembly and the rotor assembly 100 are rotatably connected to allow the magnetic fields between the stator and the rotor to interact with each other.

[0077] According to the motor of the embodiment of the utility model, by applying the aforementioned rotor assembly 100 in the motor, the stability of the motor operation and the waterproof effect can be improved.

[0078] Combination Figure 4 In some embodiments of the utility model, the stator assembly also includes a fixing plate 40, and at least a portion of the lower periphery of the fixing plate 40 extends into the first groove 101, so that a labyrinth waterproof structure is formed between the fixing plate 40 and the upper cover plate 11 of the magnetic tile fixing frame 10, which can prevent water vapor from entering the motor, thereby protecting the motor and improving the reliability of the stator assembly or the motor operation.

[0079] The utility model also provides a HVAC device. The HVAC device according to the embodiment of the utility model includes the aforementioned motor, which can improve the stability and reliability of the operation of the HVAC device.

[0080] Optionally, the HVAC equipment may be an air conditioner.

[0081] In the description of the present invention, it is necessary to understand that the terms "length", "thickness", "up", "down", "front", "back", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0082] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0083] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0084] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0085] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "embodiments", "specific embodiments", or "some embodiments" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or embodiments are included in at least one embodiment or embodiment of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or embodiments. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or embodiments in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or embodiments described in this specification and the features of the different embodiments or embodiments, without contradiction.

[0086] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A magnetic tile fixing frame, characterized in that: It includes an upper cover plate, a lower bottom plate and a plurality of spacers, wherein the upper cover plate and the lower bottom plate are distributed along the axial direction of the magnetic tile fixing frame, and the plurality of spacers connect the upper cover plate and the lower bottom plate and are distributed along the circumference of the magnetic tile fixing frame. The upper cover plate includes a first retaining ring, a second retaining ring and a third retaining ring distributed from the inside to the outside along the radial direction of the magnetic tile fixing frame, and a first groove is formed between the first retaining ring and the second retaining ring, with an opening along the axial direction away from the lower base plate; a second groove is formed between the second retaining ring and the third retaining ring, with an opening along the axial direction toward the lower base plate.

2. The magnetic tile fixing frame according to claim 1, characterized in that: The first retaining ring and the second retaining ring are spaced apart in radial direction to form the first groove, and the partition bar connects one side of the first retaining ring and the second retaining ring close to the lower base plate.

3. The magnetic tile fixing frame according to claim 1, characterized in that: The second retaining ring and the third retaining ring are spaced apart in radial direction to form the second groove. The upper cover plate further comprises a plate portion connected to a side of the second retaining ring and the third retaining ring which is away from the lower base plate.

4. The magnetic tile fixing frame according to any one of claims 1 to 3, characterized in that: The outer diameter of the lower base plate is not greater than the radial dimension of the outer edges of the plurality of spacers relative to the axis of the magnetic tile fixing frame; Or, the radial dimension of the outer edge of the spacer bar relative to the axis of the magnetic tile fixing frame is not less than the inner diameter dimension of the second retaining ring; Or, the radial dimension of the inner side edge of the spacer bar relative to the axis of the magnetic tile fixing frame is not less than the inner diameter dimension of the first retaining ring; Or, the radial dimension of the inner side edge of the partition bar relative to the axis of the magnetic tile fixing frame is not less than the inner diameter dimension of the lower base plate; Or, the outer diameter of the upper cover plate is larger than the outer diameter of the lower base plate, and the outer diameter of the partition bar is not larger than the outer diameter of the lower base plate; Alternatively, the magnetic tile fixing frame is integrally injection molded.

5. The magnetic tile fixing frame according to claim 1, characterized in that: The first retaining ring extends out from the second retaining ring along the axial direction of the magnetic tile fixing frame in a direction away from the lower base plate.

6. A rotor assembly, characterized in that: include: The magnetic tile fixing frame according to any one of claims 1 to 5; Magnetic tiles, the magnetic tiles are positioned on the magnetic tile fixing frame; A rotor shaft, the rotor shaft is passed through the magnetic tile fixing frame and extends along the axial direction; A casing is connected to the magnetic tile fixing frame and the rotor shaft respectively.

7. The rotor assembly according to claim 6, characterized in that: The housing includes a peripheral wall and a bottom wall, wherein the peripheral wall surrounds the magnetic tile fixing frame, one end of the peripheral wall along the axial direction is connected to the bottom wall and the other end is open, wherein the opening periphery of the peripheral wall is arranged in the second groove.

8. The rotor assembly according to claim 7, characterized in that: The opening periphery of the peripheral wall is sealed and connected to the upper cover plate; and / or the peripheral wall is gap-matched with the partition bar.

9. The rotor assembly according to claim 7, characterized in that: The peripheral wall includes a first section of circular rings and a second section of circular rings distributed in the axial direction, the second section of circular rings is connected to the bottom wall, the first section of circular rings is connected to the second section of circular rings, the inner diameter of the first section of circular rings is greater than the inner diameter of the second section of circular rings, and the first section of circular rings is inserted into the second groove.

10. The rotor assembly according to any one of claims 6 to 9, characterized in that: The rotor shaft includes a first matching section, a main section and a second matching section along the axial direction, wherein the first matching section and the second matching section are respectively connected to two ends of the main section. The first matching section diameter D1, the main section diameter D2 and the second matching section diameter D3 satisfy D1≤D3, or D1<D2, or D3<D2, or D1≤D3<D2.

11. The rotor assembly according to claim 10, characterized in that: An annular groove for accommodating a retaining ring is provided at one end of the main body section close to the first matching section.

12. The rotor assembly according to claim 10, characterized in that: A coating is provided on the bearing position of the main body section.

13. A motor, characterized in that: include; Stator assembly; According to the rotor assembly according to any one of claims 6-12, the stator assembly is rotatably connected to the rotor assembly.

14. The motor according to claim 13, characterized in that The stator assembly includes a fixing plate, and at least a portion of a lower periphery of the fixing plate extends into the first groove.

15. A HVAC equipment, characterized in that: Comprising an electric machine according to claim 13 or 14.

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