Motor, fan and air conditioner

Abstract

The utility model discloses a motor, a fan and an air conditioner, and relates to the technical field of motors, and the motor comprises a housing, a stator assembly, a rotating shaft, a first end cover, a second end cover, a first rotor assembly, a second rotor assembly, and a bearing pedestal which is supported in the housing through the rotating shaft and can rotate relative to the housing. The stator assembly and the shell are fixedly connected and wound on the outer side of the bearing seat, and the first rotor assembly and the second rotor assembly are connected to the first end cover and the second end cover respectively. A magnetic field emitted by the first rotor assembly enters the second rotor assembly in the axial direction and then returns to the first rotor assembly from the second rotor assembly to form a closed magnetic circuit, so that the magnetic circuit passes through the stator assembly and interacts with a magnetic field generated by the stator assembly, the first rotor assembly and the second rotor assembly are driven to rotate, and then the rotating shaft is driven to rotate. And by adopting the axial magnetic flux matching scheme, the axial size of the motor can be effectively shortened, and the miniaturization of the motor is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a motor, a fan and an air conditioner. Background Art

[0002] In the prior art, airflow in ducted air conditioners, such as air conditioners, is generated by an internal fan, which includes a rotor and a motor that drives the rotor. The motor's rotor is typically located inside the stator. To meet the motor's performance requirements and minimize radial size, the rotor's axial dimension must be large, and the stator winding's axial dimension must also be designed to match the rotor's axial dimension to provide the appropriate magnetic field strength. Consequently, conventional motors have a large axial dimension, which prevents them from meeting miniaturization requirements and reduces the rotor's air intake area. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a motor that can effectively shorten the axial dimension, thereby facilitating miniaturization of the motor.

[0004] The utility model also provides a fan and an air conditioner having the motor.

[0005] The motor according to the first embodiment of the present invention includes: a housing with a bearing seat provided therein;

[0006] A stator assembly is fixedly connected to the housing, and the stator assembly is wound around the outer side of the bearing seat;

[0007] a rotating shaft, supported in the bearing seat and capable of rotating relative to the housing;

[0008] a first end cover, fixedly connected to the rotating shaft and located on one side of the housing along the rotation axis of the rotating shaft;

[0009] a second end cover, fixedly connected to the rotating shaft and located on the other side of the housing along the rotating axis;

[0010] a first rotor assembly connected to a side of the first end cover facing the stator assembly;

[0011] The second rotor assembly is connected to a side of the second end cover facing the stator assembly.

[0012] The motor according to the embodiment of the present utility model has at least the following beneficial effects:

[0013] By providing a rotating shaft supported by a bearing seat within the housing and capable of rotating relative to the housing, a stator assembly fixedly connected to the housing and wound around the outside of the bearing seat, a first end cap and a second end cap fixedly connected to each end of the rotating shaft, and a first rotor assembly and a second rotor assembly connected to the first end cap and the second end cap, respectively, the first and second rotor assemblies are positioned on either side of the stator assembly, thereby improving the stability and reliability of the motor during operation. Since the first rotor assembly is connected to the side of the first end cap facing the stator assembly, and the second rotor assembly is connected to the side of the second end cap facing the stator assembly, the magnetic field emitted by the first rotor assembly enters the second rotor assembly axially and then returns from the second rotor assembly to the first rotor assembly, forming a closed magnetic circuit. Therefore, the magnetic circuit passes through the stator assembly and interacts with the magnetic field generated by the stator assembly, thereby driving the first and second rotor assemblies to rotate, and in turn, the rotating shaft. The use of an axial magnetic flux coordination scheme can effectively shorten the axial dimension of the motor, facilitating its miniaturization.

[0014] According to some embodiments of the present invention, the shell includes an annular first outer edge and a second outer edge, the first outer edge protrudes from the stator assembly toward the first end cover, and at least part of the structure of the first end cover is located in the enclosed space of the first outer edge, and the second outer edge protrudes from the stator assembly toward the second end cover in a direction parallel to the rotation axis, and at least part of the structure of the second end cover is located in the enclosed space of the second outer edge.

[0015] According to some embodiments of the present invention, the bearing seat is provided with a first bearing chamber and a second bearing chamber, the first bearing chamber is located on the side facing the first end cover, a first bearing and an elastomer are installed in the first bearing chamber, the elastomer is configured to apply a preload force to the first bearing, and the second bearing chamber is located on the side facing the second end cover, a second bearing is installed in the second bearing chamber.

[0016] According to some embodiments of the present invention, a boss is provided in the bearing seat, the boss is located between the first bearing chamber and the second bearing chamber, the elastomer is a corrugated gasket, and the corrugated gasket is located between the first bearing and the boss.

[0017] According to some embodiments of the present invention, two sides of the corrugated gasket respectively abut against the outer ring of the first bearing and the side wall of the boss facing the first bearing chamber.

[0018] According to some embodiments of the present invention, the first end cover includes a first positioning step arranged around the outer side of the rotating shaft, and the first positioning step abuts against the inner ring of the first bearing; and / or,

[0019] The second end cover includes a second positioning step arranged around the outer side of the rotating shaft, and the second positioning step abuts against the inner ring of the second bearing.

[0020] According to some embodiments of the present invention, the stator assembly includes a plurality of iron cores and a plurality of windings respectively wound around the iron cores, and the plurality of iron cores are arranged at intervals along the circumferential direction of the rotation axis.

[0021] According to some embodiments of the present invention, the stator assembly and the housing are an integral plastic part.

[0022] According to some embodiments of the present invention, the first rotor assembly includes a plurality of first magnetic steels, which are fixedly connected to the inner side of the first end cover and are evenly distributed along the circumference of the rotation axis; and / or,

[0023] The second rotor assembly includes a plurality of second magnetic steels, which are fixedly connected to the inner side of the second end cover and are evenly distributed along the circumference of the rotation axis.

[0024] According to some embodiments of the present invention, the first end cover includes a circular first back iron and a plurality of first protrusions, wherein the plurality of first protrusions are provided on an inner side of the first back iron, and the plurality of first protrusions are used to position the first rotor assembly in the radial and axial directions of the first end cover; and / or,

[0025] The second end cover includes a circular second back iron and a plurality of second protrusions. The plurality of second protrusions are arranged on the inner side of the second back iron. The plurality of second protrusions are used to position the second rotor assembly along the radial direction and the axial direction of the second end cover.

[0026] The fan according to the second embodiment of the present invention includes the motor described in the above embodiment, and the two ends of the rotating shaft respectively extend to the outside of the first end cover and the outside of the second end cover; two wind wheels are respectively installed at the two ends of the rotating shaft.

[0027] The fan according to the embodiment of the utility model has at least the following beneficial effects:

[0028] By adopting the motor of the first embodiment, the motor is provided with a rotating shaft supported by a bearing seat within the housing and capable of rotating relative to the housing. The stator assembly is fixedly connected to the housing and wound around the outer side of the bearing seat. The first and second end caps are fixedly connected to the ends of the rotating shaft, respectively. The first and second rotor assemblies are connected to the first and second end caps, respectively. By arranging the first and second rotor assemblies on either side of the stator assembly, the smoothness and reliability of the motor's operation can be improved. Because the first rotor assembly is connected to the side of the first end cap facing the stator assembly, and the second rotor assembly is connected to the side of the second end cap facing the stator assembly, the magnetic field emitted by the first rotor assembly axially enters the second rotor assembly and then returns from the second rotor assembly to the first rotor assembly, forming a closed magnetic circuit. Therefore, the magnetic circuit passes through the stator assembly and interacts with the magnetic field generated by the stator assembly, thereby driving the first and second rotor assemblies to rotate, and thus driving the rotating shaft to rotate. The use of an axial magnetic flux coordination scheme can effectively reduce the axial size of the motor, facilitating its miniaturization. When the motor is positioned between two wind wheels, the larger the axial size of the motor, the smaller the air inlet area. When the fan adopts the motor of this embodiment, the axial dimension of the motor is relatively small, so the air intake area can be increased and the air outlet efficiency can be improved.

[0029] An air conditioner according to an embodiment of the third aspect of the present invention includes the fan described in the above embodiment.

[0030] By adopting the second embodiment of the blower, the blower motor is provided with a rotating shaft supported by a bearing seat within the housing and capable of rotating relative to the housing. The stator assembly is fixedly connected to the housing and wound around the outer side of the bearing seat. The first and second end caps are fixedly connected to the ends of the rotating shaft, respectively. The first and second rotor assemblies are connected to the first and second end caps, respectively. By arranging the first and second rotor assemblies on either side of the stator assembly, the smoothness and reliability of the motor operation can be improved. Because the first rotor assembly is connected to the side of the first end cap facing the stator assembly, and the second rotor assembly is connected to the side of the second end cap facing the stator assembly, the magnetic field emitted by the first rotor assembly enters the second rotor assembly axially and then returns from the second rotor assembly to the first rotor assembly, forming a closed magnetic circuit. Therefore, the magnetic circuit passes through the stator assembly and interacts with the magnetic field generated by the stator assembly, thereby driving the first and second rotor assemblies to rotate, and further driving the rotating shaft to rotate. The use of an axial magnetic flux coordination scheme can effectively shorten the axial dimension of the motor, which is conducive to the miniaturization of the motor. When the motor is positioned between the two wind wheels, the larger the axial dimension of the motor, the smaller the air inlet area. When the fan adopts the motor of this embodiment, the axial dimension of the motor is relatively small, so the air intake area can be increased and the air outlet efficiency can be improved.

[0031] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0033] Figure 1 This is a schematic structural diagram of a motor according to an embodiment of the present invention;

[0034] Figure 2 This is an exploded view of a motor according to an embodiment of the present invention;

[0035] Figure 3 This is a cross-sectional view of a motor according to an embodiment of the present invention;

[0036] Figure 4 This is a cross-sectional view of a housing according to an embodiment of the present invention;

[0037] Figure 5 This is a schematic structural diagram of an iron core according to an embodiment of the present invention;

[0038] Figure 6 This is a structural schematic diagram of a first rotor assembly according to an embodiment of the present utility model;

[0039] Figure 7 This is a schematic structural diagram of a second rotor assembly according to an embodiment of the present invention;

[0040] Figure 8 This is a simplified schematic diagram of a fan according to an embodiment of the present invention.

[0041] Figure Number:

[0042] Motor 1000;

[0043] Housing 100; bearing seat 110; first bearing chamber 111; second bearing chamber 112; elastic body 113; corrugated gasket 114; boss 115; rotating shaft 120; first outer edge 130; second outer edge 140; supporting foot 150; vibration-damping sleeve 151; mounting foot 160; vibration-damping member 161; connecting column 1611; vibration-damping pad 1612; slot 162; first bearing 170; second bearing 180;

[0044] stator assembly 200; iron core 210; yoke 211; iron sheet 212; winding 220;

[0045] First end cover 300; first rotor assembly 310; first magnetic steel 311; first positioning step 320; first back iron 330; first protrusion 340;

[0046] Second end cover 400; second rotor assembly 410; second magnetic steel 411; second positioning step 420; second back iron 430; second protrusion 440;

[0047] Wind turbine 2000; wind wheel 2100. DETAILED DESCRIPTION

[0048] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0049] In the description of the present invention, it should be understood that descriptions involving orientation, such as the orientation or positional relationship indicated by up, down, etc., are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0050] In the description of this utility model, "a plurality" means more than two. The use of "first" or "second" is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or implicitly indicating the order of the technical features indicated.

[0051] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0052] Reference Figure 1 、 Figure 2 and Figure 3As shown, a motor 1000 according to an embodiment of the present invention can be applied to household appliances such as air conditioners, refrigerators, humidifiers, and fans. In order to facilitate the introduction of the solution of this embodiment, the motor 1000 is applied to the fan 2000 of the air conditioner as an example. The motor 1000 includes a housing 100, a stator assembly 200, a first end cover 300, a second end cover 400, a first rotor assembly 310, and a second rotor assembly 410. A bearing seat 110 is provided inside the housing 100, and the stator assembly 200 is fixedly connected to the inside of the housing 100, and the stator assembly 200 is arranged around the outside of the bearing seat 110. The rotating shaft 120 is supported in the bearing seat 110 by a bearing, and the rotating shaft 120 can rotate relative to the housing 100. The rotating shaft 120 is used to be fixedly connected to the wind wheel 2100 to drive the wind wheel 2100 to rotate. The first end cover 300 is fixedly connected to the rotating shaft 120 and is located on one side of the shell 100 along the rotation axis of the rotating shaft 120, and the second end cover 400 is fixedly connected to the rotating shaft 120 and is located on the other side of the shell 100 along the rotation axis, that is, the first end cover 300 and the second end cover 400 are respectively located on the left and right sides of the shell 100.

[0053] For example, the first end cap 300 is located on the left side of the housing 100, the second end cap 400 is located on the right side of the housing 100, and the bearing housing 110 and the stator assembly 200 are located between the first end cap 300 and the second end cap 400. As an alternative embodiment, the first end cap 300 may be located on the right side of the housing 100, and the second end cap 400 may be located on the left side of the housing 100. At least one end of the rotating shaft 120 extends through the housing 100. The rotating shaft 120 may extend through the first end cap 300, the second end cap 400, or both ends of the rotating shaft 120. The first rotor assembly 310 is connected to the side of the first end cap 300 facing the stator assembly 200, and the second rotor assembly 410 is connected to the side of the second end cap 400 facing the stator assembly 200. In other words, the stator assembly 200 is located between the first rotor assembly 310 and the second rotor assembly 410.

[0054] It is understood that by adopting the above-mentioned solution, arranging the first rotor assembly 310 and the second rotor assembly 410 on either side of the stator assembly 200, respectively, the stability and reliability of the motor 1000 during operation can be improved. Since the first rotor assembly 310 is connected to the side of the first end cap 300 facing the stator assembly 200, and the second rotor assembly 410 is connected to the side of the second end cap 400 facing the stator assembly 200, the magnetic field emitted by the first rotor assembly 310 enters the second rotor assembly 410 axially and then returns from the second rotor assembly 410 to the first rotor assembly 310, forming a closed magnetic circuit. Therefore, the magnetic circuit passes through the stator assembly 200 and interacts with the magnetic field generated by the stator assembly 200, thereby driving the first rotor assembly 310 and the second rotor assembly 410 to rotate, and further driving the rotation of the rotating shaft 120. The adoption of the axial magnetic flux coordination solution can effectively shorten the axial dimension of the motor 1000, which is conducive to the miniaturization of the motor 1000.

[0055] Reference Figure 3 As shown, in an embodiment of the present invention, the housing 100 includes a first outer edge 130 and a second outer edge 140, both of which are annular. The first outer edge 130 protrudes from the stator assembly 200 toward the first end cap 300. At least a portion of the structure of the first end cap 300 is located within the space enclosed by the first outer edge 130, and the first end cap 300 and the first outer edge 130 are spaced apart. For example, the entire structure of the first end cap 300 is located within the space enclosed by the first outer ring, and the side of the first end cap 300 facing away from the first rotor assembly 310 is flush with the end of the first outer edge 130. The second outer edge 140 protrudes from the stator assembly 200 toward the second end cap 400. At least a portion of the structure of the second end cap 400 is located within the space enclosed by the second outer edge 140, and the second end cap 400 and the second outer edge 140 are spaced apart. For example, the entire structure of the second end cover 400 is located within the enclosed space of the second outer ring, and the side of the second end cover 400 facing away from the second rotor assembly 410 is flush with the end of the second outer edge 140 .

[0056] It can be understood that by arranging at least part of the structure of the first end cover 300 to be located within the enclosed space of the first outer edge 130, and at least part of the structure of the second end cover 400 to be located within the enclosed space of the second outer edge 140, the gap size between the first end cover 300 and the first outer edge 130 can be effectively reduced, as can the gap size between the second end cover 400 and the second outer edge 140. This can improve the protective effect of the first end cover 300 and the second end cover 400 on the stator assembly 200, the first rotor assembly 310 and the second rotor assembly 410, effectively reduce the probability of water entering the interior of the housing 100, and at the same time reduce the entry of foreign matter such as dust and insects, so as to improve the reliability and stability of the motor 1000 during operation.

[0057] Reference Figure 3 and Figure 4 As shown, in an embodiment of the present invention, the bearing seat 110 is provided with a first bearing chamber 111 and a second bearing chamber 112. The first bearing chamber 111 is located on the side facing the first end cap 300, and the second bearing chamber 112 is located on the side facing the second end cap 400. A first bearing 170 and an elastic member 113 are provided in the first bearing chamber 111. The rotating shaft 120 passes through the first bearing 170 and the elastic member. The elastic member is used to apply a preload force to the first bearing 170 to eliminate clearance, reduce the adverse condition of shaking of the first bearing 170, and improve the stability of the operation of the motor 1000. A second bearing 180 is installed in the second bearing chamber 112, and the rotating shaft 120 passes through the second bearing 180. The first bearing 170 and the second bearing 180 can support the rotating shaft 120, while allowing the rotating shaft 120 to rotate smoothly and reducing friction during rotation, thereby improving the stability of the operation and service life of the rotating shaft 120. As an alternative embodiment, only one bearing with a longer axial length may be provided in the bearing seat 110 , or three or four bearings may be designed. The appropriate solution is selected according to the actual situation.

[0058] Reference Figure 3 and Figure 4 As shown, in an embodiment of the present invention, a boss 115 is provided in the bearing seat 110, and the boss 115 is located between the first bearing chamber 111 and the second bearing chamber 112. The elastic member is a corrugated gasket 114, and the corrugated gasket 114 is located between the first bearing 170 and the boss 115. Therefore, the corrugated gasket 114 abuts against the first bearing 170 and the boss 115, respectively, thereby applying a preload force to the first bearing 170, eliminating the clearance of the first bearing 170, and improving the stability of the first bearing 170 during operation. For example, the bearing seat 110 is provided with a through hole that passes through in the axial direction, and a boss 115 is provided on the inner wall of the middle part of the through hole. The boss 115 is annular and arranged along the circumference of the through hole. The boss 115 divides the through hole into the first bearing chamber 111 and the second bearing chamber 112. As an alternative embodiment, a spacer sleeve may be placed in the through hole to separate the first bearing chamber 111 and the second bearing chamber 112, or the boss 115 may not be formed, or the spacer sleeve and other structures may not be placed, but a corrugated gasket 114 may be placed directly between the first bearing chamber 111 and the second bearing chamber 112. At this time, the corrugated gasket 114 abuts against the first bearing 170 and the second bearing 180 at the same time. The appropriate solution can be selected according to the actual situation.

[0059] In the embodiment of the present invention, one side of the corrugated washer 114 axially abuts the outer ring of the first bearing 170, and the other side abuts the sidewall of the boss 115 facing the first bearing chamber 111. It will be understood that the first bearing 170 comprises an inner ring, an outer ring, and multiple rolling elements. The outer ring is nested within the inner ring and spaced apart from the inner ring. The multiple rolling elements are positioned within a track between the inner and outer rings and are restrained by a retainer. The inner ring is fixedly connected to the rotating shaft 120, for example, by an interference fit. The outer ring is fixedly connected to the inner wall of the first bearing chamber 111 and is rotatable relative to the inner ring. Therefore, when the first and second rotor assemblies 310, 410 drive the rotating shaft 120 to rotate via the first and second end caps 300, 400, the rotating shaft 120 also drives the inner ring to rotate. The corrugated gasket 114 and the outer ring are usually fixed relative to the housing 100. In order to avoid friction and wear of the corrugated gasket 114, it is necessary to design the corrugated gasket 114 and the outer ring to abut against each other to improve the rationality and reliability of the structural design of the motor 1000.

[0060] Reference Figure 3 As shown, in the embodiment of the present invention, the first end cap 300 includes a first positioning step 320, which is disposed around the outer side of the rotating shaft 120 and abuts the inner ring of the first bearing 170. The second end cap 400 includes a second positioning step 420, which is disposed around the outer side of the rotating shaft 120 and abuts the inner ring of the second bearing 180. It will be appreciated that since the first and second end caps 300, 400, and the rotating shaft 120 rotate synchronously, the inner rings of the first and second bearings 170, 180 also rotate synchronously with the rotating shaft 120. Therefore, the first positioning step 320 abuts the inner ring of the first bearing 170, and the second positioning step 420 abuts the inner ring of the second bearing 180. This effectively limits the position of the first and second bearings 170, 180, thereby eliminating play between the first and second bearings 170, 180, and improving operational stability of the first and second bearings 170, 180.

[0061] Reference Figure 2 and Figure 5As shown, in an embodiment of the present invention, the stator assembly 200 includes a plurality of iron cores 210 and a plurality of windings 220, and the plurality of windings 220 are correspondingly wound around the plurality of iron cores 210, and the plurality of iron cores 210 are arranged at intervals along the axial direction of the rotation axis. For example, the iron core 210 includes a yoke 211 and two iron sheets 212, the two iron sheets 212 are connected to the two ends of the yoke 211, and the windings 220 are wound around the yoke 211. It can be understood that by arranging the plurality of iron cores 210 at intervals along the circumferential direction of the rotation axis, the uniformity of the magnetic field distribution of the stator assembly 200 can be improved, thereby improving the stability and reliability of the motor 1000 during operation. Designing the windings 220 to be wound around the yoke 211 can reduce iron loss, especially iron loss when the motor 1000 is running at high speed, thereby improving the performance of the motor 1000.

[0062] In the embodiment of the present invention, the stator assembly 200 and housing 100 are integrally molded, which reduces the number of components used. For example, screws and other components are eliminated, eliminating the need for separate assembly. This simplifies the production process of the motor 1000, reduces assembly steps and labor costs, and also makes the motor 1000 more compact. This also enhances the overall mechanical strength and rigidity of the motor 1000, improves its vibration and impact resistance, and extends its service life.

[0063] Reference Figure 6 and Figure 7 As shown, in an embodiment of the present invention, the first rotor assembly 310 includes a plurality of first magnets 311, which are fixedly connected to the inner side of the first end cover 300, that is, the first magnets 311 are fixedly connected to the side of the first end cover 300 facing the stator assembly 200, and the plurality of first magnets 311 are evenly arranged along the circumference of the rotation axis. Adjacent first magnets 311 have opposite polarities at their ends facing away from the first end cover 300. The second rotor assembly 410 includes a plurality of second magnets 411, which are fixedly connected to the inner side of the second end cover 400, that is, the second magnets 411 are fixedly connected to the side of the second end cover 400 facing the stator assembly 200, and the plurality of second magnets 411 are evenly arranged along the circumference of the rotation axis. Adjacent second magnets 411 have opposite polarities at their ends facing away from the second end cover 400. The number of second magnetic steels 411 is the same as the number of first magnetic steels 311, and the plurality of first magnetic steels 311 and the plurality of second magnetic steels 411 are arranged in a one-to-one correspondence in the axial direction. The polarity of the axially opposing first magnetic steels 311 is opposite to the polarity of the second magnetic steels 411. Therefore, the magnetic field generated by the first magnetic steels 311 enters the second magnetic steels 411, and the magnetic field of the second magnetic steels 411 returns to the first magnetic steel 311. The magnetic fields generated by the first and second magnetic steels 311 and 411 interact with the magnetic field generated by the winding 220, thereby driving the first and second rotor assemblies 310 and 410 to rotate synchronously.

[0064] Reference Figure 6 As shown, in an embodiment of the present invention, the first end cap 300 includes a circular first back iron 330 and a plurality of first protrusions 340. The plurality of first protrusions 340 are disposed on the inner side of the first back iron 330. The plurality of first protrusions 340 are used to position the first rotor assembly 310 radially and axially relative to the first end cap 300. For example, a first protrusion 340 is provided at each radial end of the first magnetic steel 311, and a first protrusion 340 is provided at each circumferential end of the first magnetic steel 311. Adjacent first magnetic steels 311 may share a single first protrusion 340. Therefore, by restricting the position of the first magnetic steel 311 with the plurality of first protrusions 340, the reliability and accuracy of the positioning of the first magnetic steel 311 can be improved.

[0065] Reference Figure 7 As shown, in an embodiment of the present invention, the second end cover 400 includes a circular second back iron 430 and a plurality of second protrusions 440. The plurality of second protrusions 440 are disposed on the inner side of the second back iron 430. The plurality of second protrusions 440 are used to position the second rotor assembly 410 in the radial and axial directions of the second end cover 400. For example, a second protrusion 440 is provided at each radial end of the second magnetic steel 411, and a second protrusion 440 is provided at each circumferential end of the second magnetic steel 411. Adjacent second magnetic steels 411 may share a single second protrusion 440. Therefore, by restricting the position of the second magnetic steel 411 by the plurality of second protrusions 440, the reliability and accuracy of the positioning of the second magnetic steel 411 can be improved.

[0066] Reference Figure 1 and Figure 2 As shown, in an embodiment of the present invention, the motor 1000 requires a fixed housing during operation, for example, to connect the motor 1000 to the mounting structure of an air conditioner. Mounting feet 160 are provided on the outside of the housing. Two mounting feet 160 can be provided and spaced apart along the circumference of the housing. One end of the mounting foot 160 is provided with a slot 162. The motor 1000 also includes a vibration damper 161, which includes a connecting post 1611 and two vibration damping pads 1612. The two vibration damping pads 1612 are connected to the ends of the connecting post 1611, respectively. The connecting post 1611 is engaged with the slot 162. Fasteners are provided through the connecting post 1611 and are threadedly connected to a fixing plate, thereby securing the housing to the mounting plate. The vibration damper 161 acts as a vibration damper, thereby reducing the possibility that vibrations during operation of the motor 1000 are transmitted to the mounting plate through the fasteners, thereby increasing noise. Support feet 150 are also provided on the outside of the housing to support the motor 1000. The motor 1000 further includes a vibration-damping sleeve 151 , which is mounted on the support leg 150 , thereby effectively reducing the vibration of the motor 1000 during operation from being transmitted to the supporting structure of the air conditioner through the support leg 150 , thereby improving the user experience.

[0067] Reference Figure 8 As shown, a fan 2000 according to one embodiment of the present invention includes the motor 1000 of the above-described embodiment and two wind rotors 2100. The fan 2000 according to this embodiment of the present invention is installed in a ducted air conditioner, which has a dual-wind rotor structure. The ends of the rotating shaft 120 extend outward from the first end cap 300 and the second end cap 400, respectively. The two wind rotors 2100 are mounted on either end of the rotating shaft 120, for example, on the left and right sides of the motor 1000. By adopting the motor 1000 of the above embodiment, the motor 1000 is supported by the bearing seat 110 inside the housing 100 by setting a rotating shaft 120 and can rotate relative to the housing 100, the stator assembly 200 and the housing 100 are fixedly connected and wound around the outside of the bearing seat 110, the first end cover 300 and the second end cover 400 are respectively fixedly connected to the two ends of the rotating shaft 120, the first rotor assembly 310 and the second rotor assembly 410 are respectively connected to the first end cover 300 and the second end cover 400, and by arranging the first rotor assembly 310 and the second rotor assembly 410 on both sides of the stator assembly 200, the air output of the motor 1000 can be increased, and the stability and reliability of the motor 1000 during operation can be improved. Because the first rotor assembly 310 is connected to the side of the first end cap 300 facing the stator assembly 200, and the second rotor assembly 410 is connected to the side of the second end cap 400 facing the stator assembly 200, the magnetic field emitted by the first rotor assembly 310 enters the second rotor assembly 410 axially and then returns from the second rotor assembly 410 to the first rotor assembly 310, forming a closed magnetic circuit. Therefore, the magnetic circuit passes through the stator assembly 200 and interacts with the magnetic field generated by the stator assembly 200, thereby driving the first rotor assembly 310 and the second rotor assembly 410 to rotate, and further driving the rotation of the rotating shaft 120. The use of an axial magnetic flux coordination scheme can effectively shorten the axial dimension of the motor 1000, facilitating miniaturization of the motor 1000.

[0068] It should be noted that Figure 8 The dashed arrow in the figure indicates the direction of airflow. The end of the rotor 2100 facing the motor 1000 is the airflow area. When the motor 1000 is placed between two rotors 2100, the larger the axial dimension of the motor 1000, the smaller the airflow area. However, when the fan 2000 employs the motor 1000 of this embodiment, the smaller axial dimension of the motor 1000 increases the airflow area and improves airflow efficiency.

[0069] Since the fan 2000 of the embodiment of the present invention adopts all the technical solutions of the motor 1000 of the above embodiment, it has at least all the beneficial effects brought by the technical solutions of the above embodiment, which will not be repeated here.

[0070] An air conditioner according to one embodiment of the present invention includes the fan 2000 of the above embodiment. The air conditioner according to the present invention adopts the fan 2000 of the above embodiment. The motor 1000 of the fan 2000 is supported by a bearing seat 110 inside the housing 100 by providing a rotating shaft 120 and is rotatable relative to the housing 100. The stator assembly 200 is fixedly connected to the housing 100 and wound around the outside of the bearing seat 110. The first end cover 300 and the second end cover 400 are respectively fixedly connected to the two ends of the rotating shaft 120. The first rotor assembly 310 and the second rotor assembly 410 are respectively connected to the first end cover 300 and the second end cover 400. By arranging the first rotor assembly 310 and the second rotor assembly 410 on both sides of the stator assembly 200, the stability and reliability of the motor 100 during operation can be improved. Since the first rotor assembly 310 is connected to the side of the first end cap 300 facing the stator assembly 200, and the second rotor assembly 410 is connected to the side of the second end cap 400 facing the stator assembly 200, the magnetic field emitted by the first rotor assembly 310 enters the second rotor assembly 410 axially, and then returns from the second rotor assembly 410 to the first rotor assembly 310 to form a closed magnetic circuit. Therefore, the magnetic circuit passes through the stator assembly 200 and interacts with the magnetic field generated by the stator assembly 200, thereby driving the first rotor assembly 310 and the second rotor assembly 410 to rotate, and then driving the rotating shaft 120 to rotate. The use of an axial magnetic flux matching solution can effectively shorten the axial dimension of the motor 1000, which is conducive to the miniaturization of the motor 1000. When the motor 1000 is set between the two wind wheels 2100, the larger the axial dimension of the motor 1000, the smaller the air inlet area. After the fan 2000 adopts the motor 1000 of this embodiment, due to the smaller axial dimension of the motor 1000, the air inlet area can be increased, thereby improving the air outlet efficiency.

[0071] Since the air conditioner adopts all the technical solutions of the fan 2000 of the above embodiment, it has at least all the beneficial effects brought by the technical solutions of the above embodiment, which will not be repeated here.

[0072] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A motor, characterized in that include: a housing with a bearing seat provided therein; A stator assembly is fixedly connected to the housing, and the stator assembly is wound around the outer side of the bearing seat; a rotating shaft, supported in the bearing seat and capable of rotating relative to the housing; a first end cover, fixedly connected to the rotating shaft and located on one side of the housing along the rotation axis of the rotating shaft; a second end cover, fixedly connected to the rotating shaft and located on the other side of the housing along the rotating axis; a first rotor assembly connected to a side of the first end cover facing the stator assembly; The second rotor assembly is connected to a side of the second end cover facing the stator assembly.

2. The motor according to claim 1, characterized in that: The shell includes an annular first outer edge and a second outer edge, the first outer edge protruding from the stator assembly toward the first end cover, and at least part of the structure of the first end cover is located in the enclosed space of the first outer edge, and the second outer edge protruding from the stator assembly toward the second end cover in a direction parallel to the rotation axis, and at least part of the structure of the second end cover is located in the enclosed space of the second outer edge.

3. The motor according to claim 1 or 2, characterized in that: The bearing seat is provided with a first bearing chamber and a second bearing chamber. The first bearing chamber is located on the side facing the first end cover. A first bearing and an elastomer are installed in the first bearing chamber. The elastomer is configured to apply a preload force to the first bearing. The second bearing chamber is located on the side facing the second end cover. A second bearing is installed in the second bearing chamber.

4. The motor according to claim 3, characterized in that: A boss is provided in the bearing seat, and the boss is located between the first bearing chamber and the second bearing chamber. The elastic body is a corrugated gasket, and the corrugated gasket is located between the first bearing and the boss.

5. The motor according to claim 4, characterized in that: Two sides of the corrugated gasket respectively abut against the outer ring of the first bearing and the side wall of the boss facing the first bearing chamber.

6. The motor according to claim 3, characterized in that: The first end cover includes a first positioning step arranged around the outer side of the rotating shaft, the first positioning step abutting against the inner ring of the first bearing; and / or, The second end cover includes a second positioning step arranged around the outer side of the rotating shaft, and the second positioning step abuts against the inner ring of the second bearing.

7. The motor according to claim 1, characterized in that: The stator assembly includes a plurality of iron cores and a plurality of windings respectively wound around the iron cores. The plurality of iron cores are arranged at intervals along the circumferential direction of the rotation axis.

8. The motor according to claim 1 or 7, characterized in that: The stator assembly and the housing are an integral plastic part.

9. The motor according to claim 1, characterized in that: The first rotor assembly includes a plurality of first magnetic steels, which are fixedly connected to the inner side of the first end cover and are evenly distributed along the circumference of the rotation axis; and / or, The second rotor assembly includes a plurality of second magnetic steels, which are fixedly connected to the inner side of the second end cover and are evenly distributed along the circumference of the rotation axis.

10. The motor according to claim 1, characterized in that: The first end cover includes a circular first back iron and a plurality of first protrusions, wherein the plurality of first protrusions are provided on an inner side of the first back iron, and the plurality of first protrusions are used to position the first rotor assembly in a radial direction and an axial direction of the first end cover; and / or, The second end cover includes a circular second back iron and a plurality of second protrusions. The plurality of second protrusions are arranged on the inner side of the second back iron. The plurality of second protrusions are used to position the second rotor assembly along the radial direction and the axial direction of the second end cover.

11. A fan, characterized in that include: The motor according to any one of claims 1 to 10, wherein both ends of the rotating shaft extend outwardly from the first end cover and the second end cover respectively; Two wind wheels are respectively installed at two ends of the rotating shaft.

12. An air conditioner, characterized in that: Including the fan according to claim 11.

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