Capacitor motor with self-adaptive magnetic coupling heat dissipation function

Abstract

The invention belongs to the technical field of capacitor motors, and particularly relates to a self-adaptive magnetic coupling heat dissipation capacitor motor which comprises a stator core, a rotor rotatably arranged at the center of the stator core, a motor shaft fixedly connected to the center of the rotor, a coil holder fixedly connected to the stator core and covering the rotor, and a second shell fixedly connected to one side of the stator core. The side, away from the second shell, of the stator core is fixedly connected with a first shell, and a passive heat dissipation part and an active heat dissipation part are arranged in the second shell. Through the arrangement of the passive heat dissipation part, stable and continuous heat dissipation can be provided for the interior of the motor when the motor works at a low speed or intermittently and the temperature rise in the motor is not high, and through the arrangement of the active heat dissipation part, when the temperature rise in the motor is high and the passive heat dissipation part is difficult to effectively cool when the motor works at a continuous high speed, stable heat dissipation can be provided for the interior of the motor. The PCB is controlled to be powered on through the thermoswitch to perform magnetic coupling, so that the active heat dissipation component works and the passive heat dissipation component is superposed to dissipate heat, and further a more efficient heat dissipation effect is provided.

Description

Technical Field

[0001] The present invention belongs to the technical field of capacitor motors, and specifically relates to a capacitor motor with adaptive magnetic coupling heat dissipation. Background Art

[0002] In various motors commonly seen, there are iron cores and winding coils inside. The winding has resistance, and when energized, it will generate losses. The magnitude of the losses is proportional to the square of the resistance and the current, which is what we often call copper loss. If the current is not a standard direct current or sine wave, harmonic losses will also be generated; the iron core has hysteresis and eddy current effects, and eddy current losses will also be generated in an alternating magnetic field. The magnitude of these losses is related to the material, current, frequency, and voltage, which is called iron loss. Both copper loss and iron loss will be manifested in the form of heat, thus affecting the temperature rise of the motor. Therefore, the quality of the heat dissipation effect of a single-phase capacitor running motor directly affects the service life and overload capacity of the motor itself.

[0003] For motor loss and heat generation, generally, the temperature rise is required to be controlled within the range specified by national standards. However, for motors with different heat dissipation effects, under the same temperature rise standard, the utilization rate of motor design materials will vary greatly. On the contrary, for motors with the same design parameters, using different heat dissipation methods, the temperature rise of the motors will also vary greatly. Therefore, the rationality of the motor heat dissipation method design plays an important role in the design and development of the motor. Similarly, for motors used in special environments, the quality of the designed heat dissipation effect plays a decisive role.

[0004] Chinese Patent with Publication No. CN206820604U discloses a new type of heat dissipation single-phase capacitor running motor, which includes a motor front end cover, a rotor assembly, a stator assembly, a motor rear end cover, and a fan. The motor front end cover and the motor rear end cover are fixedly connected by screws. A stator assembly is coaxially accommodated in the cavity formed by the motor front end cover and the motor rear end cover. A rotor assembly is coaxially arranged in the middle of the stator assembly. The rotating shafts on the rotor assembly respectively pass through the midpoints of the motor front end cover and the motor rear end cover, and a fan is coaxially fixedly installed on the rotating shaft passing through the motor rear end cover; a U-shaped protection coil is arranged at the wire outlet of the motor rear end cover, and a vertical hole is arranged on the side of the motor front end cover; a crescent-shaped heat dissipation hole is arranged on the end face of the motor rear end cover. The rotating shaft drives the fan to rotate together, which can independently suck in air to dissipate heat from the motor.

[0005] However, the above patent still has the following disadvantages: 1. The fan described in the above patent is independently arranged outside the motor and connected to the rotating shaft of the motor, so that when the motor works, the fan is synchronously driven to rotate to generate air flow, thereby dissipating heat from the motor. However, in this way, the air flow is blocked by the motor housing, resulting in a small air flow volume entering the motor for heat dissipation, and it is difficult to effectively dissipate heat.

[0006] 2. The fan blades of the above patent are arranged outside the motor. When installing the motor, it is necessary to consider reserving the installation position of the fan blades and leaving enough space to meet the airflow space. This makes the installation of the motor more troublesome, and the exposed fan blades are easily blocked by external debris and stuck, which in turn causes the motor to get stuck and cause damage to the motor.

[0007] 3. The fan blades of the above-mentioned patent are always fixedly connected to the rotating shaft of the motor. Therefore, when the motor rotates, it must drive the fan blades to rotate and do work. However, when the motor works at a low speed or intermittently, it is difficult for the fan blades to stably generate continuous airflow, resulting in the motor doing ineffective work and the heat dissipation effect cannot be improved. Summary of the invention

[0008] In order to overcome the deficiencies of the prior art, the present invention solves the technical problem of providing a passive heat dissipation component to provide stable and continuous heat dissipation to the inside of the motor when the motor is working at a low speed or intermittently and the temperature rise inside the motor is not high, thereby reducing the copper loss and iron loss of the motor. When the motor is working continuously at a high speed and the temperature rise inside the motor is high and the passive heat dissipation component is difficult to effectively cool down, the active heat dissipation component is connected to the motor shaft through magnetic coupling transmission through the control of the thermal switch and the PCB board, so that the active heat dissipation component works and the heat dissipation of the passive heat dissipation component is superimposed, providing a more efficient heat dissipation effect. A magnetic coupling transmission method is adopted between the active heat dissipation component and the motor shaft. When the motor is working at a low speed or intermittently, there is no need to drive the active heat dissipation component to work, and the motor shaft is disconnected from the active heat dissipation component, so that the motor does not do useless work. When active heat dissipation components are required to participate in heat dissipation during operation, the PCB board is powered on through the thermal switch to perform magnetic coupling, and the motor shaft is connected to the active heat dissipation components for heat dissipation. Due to the use of magnetic coupling transmission, the transmission is smoother when the power is connected, reducing the damage to the motor caused by sudden increase in load. The heat dissipation components of this patent are all arranged in the motor casing, and the casing is used to provide good protection for the heat dissipation components. The heat dissipation components are built into the casing, so that the heat dissipation components can dissipate heat more directly to the heating parts of the motor, improve the heat dissipation efficiency, and ensure the heat dissipation effect.

[0009] In order to achieve the above-mentioned purpose, the present invention provides the following technical solution: a capacitor motor with adaptive magnetic coupling heat dissipation, comprising: A stator core, wherein a rotor is rotatably arranged at the center of the stator core, a motor shaft is fixedly connected to the center of the rotor, and a bobbin covering the rotor is fixedly connected to the stator core; A second housing, wherein one side of the stator core is fixedly connected to the second housing, and a side of the stator core away from the second housing is fixedly connected to the first housing, and the motor shaft extends from the center of the first housing; Wherein, a passive heat dissipation component and an active heat dissipation component are respectively arranged in the second shell.

[0010] Furthermore, the passive heat dissipation component includes a seat plate which is fixedly connected inside the second housing. One end of the motor shaft is rotatably connected to the seat plate. A plurality of heat dissipation tubes are fixedly connected to the seat plate. The end of each heat dissipation tube extends into the gap between the stator core and the rotor. The inner end of the second housing is fixedly connected with a heat dissipation grille plate, and the end of each heat dissipation tube is fixedly connected with the heat dissipation grille plate.

[0011] Furthermore, through barrel grooves are formed in the seat plate near each heat dissipation tube. Ridges are respectively arranged inside the side wall of the second housing, and a tenon capable of being clamped with the corresponding ridge is arranged on one side of the seat plate.

[0012] Furthermore, silicone grease is coated at the connection area between each heat dissipation tube and the heat dissipation grille plate, and an insulating paint is sprayed on the outer surface of each heat pipe.

[0013] Furthermore, the active heat dissipation component includes a connecting part which is arranged at the center of the end of the second housing. A fan blade is rotatably connected inside the connecting part. The fan blade is located between the seat plate and the heat dissipation grille plate, and a gap is left between the fan blade and the seat plate.

[0014] Furthermore, an annular seat is fixedly connected to one end of the motor shaft close to the seat plate. A plurality of neodymium magnets are fixedly connected to one side of the annular seat close to the seat plate. The plurality of neodymium magnets form an annular array. A PCB board is fixedly connected to one end of the fan blade close to the seat plate, and electromagnetic coils are engraved on the surface of the PCB board at positions corresponding to each neodymium magnet.

[0015] Furthermore, the magnetic pole directions between the neodymium magnets are arranged in a staggered manner, and the magnetic pole direction of the electromagnetic coil is the same as that of each neodymium magnet.

[0016] Furthermore, the PCB board is connected with a thermal switch, a control element is connected to the surface of the PCB board, the center of the fan blade is hollow, a slip ring is fixedly connected inside the connecting part, the rotating end of the slip ring is fixedly connected with the fan blade, and the slip ring is connected with the PCB board through a wire.

[0017] Furthermore, a plurality of first air ports are evenly distributed and opened at the end of the second housing. Each first air port penetrates through the second housing and the heat dissipation grille plate. A plurality of second air ports are opened on the side wall of the first housing, and a mesh cover is fixedly connected inside each first air port and the second air port.

[0018] In summary, compared with the prior art, the beneficial effects of the present invention are as follows: (1) By setting up passive heat dissipation components, it is possible to provide stable and continuous heat dissipation to the interior of the motor when the motor is operating at low speed or intermittently and the temperature rise inside the motor is relatively low, thereby reducing the copper loss and iron loss of the motor. And by setting up active heat dissipation components, when the motor is operating continuously at high speed and the temperature rise inside the motor is relatively high and it is difficult for the passive heat dissipation components to effectively cool down, the thermal switch controls the PCB board to energize and generate magnetism, so that the active heat dissipation components are coupled to the motor shaft through magnetic force for transmission connection. The active heat dissipation components work and the heat dissipation of the passive heat dissipation components is superimposed, thereby providing a more efficient heat dissipation effect.

[0019] (2) If a magnetic coupling transmission method is adopted between the active heat dissipation components and the motor shaft, when the motor is operating at low speed or intermittently and there is no need for the active heat dissipation components to participate in the heat dissipation work, the connection between the motor shaft and the active heat dissipation components is disconnected, so that the motor does not have to drive the active heat dissipation components to do useless work at this time.

[0020] (3) When the active heat dissipation components are needed to participate in the heat dissipation during the working process, the motor shaft and the active heat dissipation components are connected by magnetic coupling for heat dissipation work. Because of the magnetic coupling transmission method, the transmission is smoother during the power connection, reducing the damage to the motor caused by suddenly increasing the load.

[0021] (4) All the heat dissipation components of this patent are arranged inside the outer shell of the motor, so the outer shell provides good protection for the heat dissipation components. The heat dissipation components are built inside the outer shell, enabling the heat dissipation components to directly dissipate heat to the heat-generating parts of the motor, improving the heat dissipation efficiency and ensuring the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional schematic diagram of this patent.

[0023] Figure 2 It is a side view of this patent.

[0024] Figure 3 It is Figure 2 A three-dimensional cross-sectional view at A-A in

[0025] Figure 4 It is Figure 3 A partial enlarged view at C in

[0026] Figure 5 It is Figure 2 A three-dimensional cross-sectional view at B-B in

[0027] Figure 6 It is an exploded schematic diagram of this patent.

[0028] Figure 7 It is a structural schematic diagram of the passive heat dissipation components of this patent.

[0029] Figure 8This is a schematic structural diagram of the active heat dissipation component of the patent.

[0030] Figure 9 This is a three-dimensional schematic diagram when the patent has dust and waterproof performance.

[0031] Explanation of reference numerals: First housing 10; Second housing 11; Stator core 12; Wire holder 13; Rotor 14; Motor shaft 15; Base plate 16; Barrel groove 17; Tenon 18; Ridge 19; Heat dissipation tube 20; Heat dissipation grille plate 21; Connecting part 22; Fan blade 23; PCB board 24; Electromagnetic coil 25; Thermal switch 26; Control element 27; Annular seat 28; Neodymium magnet 29; Ring groove 30; First air port 31; Second air port 32; Mesh cover 33; Slip ring 34. Detailed implementation manners

[0032] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Embodiment 1

[0033] As Figures 1-8 shown, a capacitive motor with adaptive magnetic coupling heat dissipation, including a first housing 10 and a second housing 11. A stator core 12 is fixedly connected between the first housing 10 and the second housing 11. A wire holder 13 is fixedly connected to the stator core 12. A rotor 14 is rotatably arranged at the center of the stator core 12. A motor shaft 15 passing through the end of the first housing 10 is fixedly connected to the center of the rotor 14. A base plate 16 is fixedly connected inside the second housing 11. One end of the motor shaft 15 close to the second housing 11 is rotatably connected to the base plate 16. A heat dissipation grille plate 21 is closely attached and fixedly connected to the inner side of the end of the second housing 11. Four heat dissipation tubes 20 are respectively fixedly connected to the four corners of the base plate 16. One end of each heat dissipation tube 20 passes through the base plate 16 and is fixedly connected to the heat dissipation grille plate 21. One end of each heat dissipation tube 20 away from the heat dissipation grille plate 21 extends into the gap between the stator core 12 and the rotor 14. A silicone grease with good heat conduction effect is coated at the connection part of each heat dissipation tube 20 and the heat dissipation grille plate 21. The surface of the heat dissipation tube 20 is sprayed with insulating paint.

[0034] By arranging the heat dissipation tubes 20, the heat generated at the stator core 12 and the rotor 14 is transferred to the heat dissipation grille plate 21 by the heat conduction of the heat dissipation tubes 20, and the heat dissipation grille plate 21 closely attached to the second housing 11 dissipates the heat to the external environment through the second housing 11, providing stable and continuous heat dissipation for the inside of the motor, thereby reducing the copper loss and iron loss of the motor.

[0035] Compared with the comparative documents, passive cooling can achieve motor heat dissipation without increasing the load and energy consumption of the motor, and the cooling effect is continuous and stable. Especially when the motor is working at low speed or intermittently, it can still ensure stable and continuous heat dissipation effect.

[0036] By coating with silicone grease, heat can be conducted more efficiently between the heat dissipation pipe 20 and the heat dissipation grille plate 21, so that the heat dissipation grille plate 21 can efficiently dissipate the heat absorbed by the heat dissipation pipe 20, thereby ensuring the heat dissipation effect. The heat dissipation pipe 20 is usually made of copper material. Coating insulating paint on the surface of the heat dissipation pipe 20 can effectively prevent the heat dissipation pipe 20 from contacting with the stator core 12 or the rotor 14 and conducting electricity, thereby preventing the heat dissipation pipe 20 from affecting the normal operation of the motor.

[0037] like Figures 1-8 As shown, a connecting portion 22 is provided at the inner center of the end of the second shell 11, and the connecting portion 22 passes through the center of the heat dissipation grille plate 21. A fan blade 23 located between the seat plate 16 and the heat dissipation grille plate 21 is rotatably connected in the connecting portion 22, and a gap is left between the end of the fan blade 23 and the seat plate 16 and they do not contact each other. An annular groove 30 is provided on the side of the seat plate 16 close to the rotor 14, and an annular seat 28 is fixedly connected to one end of the motor shaft 15 close to the heat dissipation grille plate 21. A plurality of neodymium magnets 29 are evenly distributed and fixedly connected to the side of the annular seat 28 close to the seat plate 16 in a circumferential direction. The neodymium magnets 29 forming an annular shape extend into the annular groove 30 and leave a gap with the side wall of the annular groove 30 and do not contact each other. An electromagnetic coil 25 is engraved and provided at the corresponding position of each neodymium magnet 29 on the surface of the PCB board 24 close to the seat plate 16.

[0038] By providing the fan blades 23, when the motor continuously operates at high speed and the efficiency of passive heat dissipation cannot meet the heat dissipation demand, the fan blades 23 are connected to the rotor 14 by power, so that the rotor 14 rotates and the fan blades 23 are driven to rotate at the same time, thereby generating airflow to carry away the heat generated in the stator core 12 and the rotor 14, thereby efficiently cooling the motor.

[0039] When the power of the fan blades 23 and the rotor 14 is connected, a magnetic field is generated by energizing the electromagnetic coil 25, so that the neodymium magnet 29 and the electromagnetic coil 25 attract each other to realize magnetic coupling transmission. By adopting the magnetic coupling transmission method, when the motor works at a low speed or intermittently without the active heat dissipation components participating in the heat dissipation work, the motor shaft is disconnected from the active heat dissipation components, so that when the motor works at a low speed or intermittently, the motor does not need to drive the active heat dissipation components to do useless work. In addition, by adopting the magnetic coupling transmission method, the transmission is smoother when the power is connected, reducing the damage to the motor caused by the sudden increase in load.

[0040] like Figures 1-8As shown, the magnetic pole directions of each neodymium magnet 29 are staggered, the magnetic pole direction of the electromagnetic coil 25 is the same as that of each neodymium magnet 29, a thermal switch 26 is connected to the surface of the PCB board 24, a control element 27 is connected to the surface of the PCB board 24, the axis of the fan blade 23 is hollow, a collector ring 34 is fixedly connected in the connecting portion 22, the rotating end of the collector ring 34 is fixedly connected to the fan blade 23, the collector ring 34 and the PCB board 24 are connected by a wire, the rotating end of the collector ring 34 is fixedly connected to the axis of the fan blade 23, wiring grooves are opened at corresponding positions of the heat dissipation grille plate 21, the connecting portion 22, the seat plate 16 and the second shell 11, the wires of the collector ring 34 pass through the wiring grooves, and bearings are connected between the connecting portion 22 and the fan blade 23 and between the annular seat 28 and the seat plate 16.

[0041] By setting a thermal switch 26 to detect whether the internal temperature of the motor reaches a point where the passive heat dissipation efficiency cannot meet the heat dissipation demand, the conduction circuit is energized to the electromagnetic coil 25. The PCB board 24 is simple to process and the production process is mature, and the production cost is low, which is suitable for mass production. Compared with the method of directly using a PCB motor to drive the fan blades 23 to rotate for heat dissipation, this solution does not need to adjust the current conduction direction of the electromagnetic coil 25 to change the direction of the magnetic pole. This solution directly generates a magnetic pole with a fixed direction to drive the fan blades 23 to rotate for active heat dissipation, which makes the structure and control method simpler, and does not generate an alternating magnetic field to affect the normal operation of the motor.

[0042] like Figures 1-8 As shown, a through barrel groove 17 is opened on the seat plate 16 near each heat dissipation pipe 20, a ridge 19 is fixedly provided inside the side wall of the second shell 11, and a tenon 18 capable of being clamped and fixed with the ridge 19 is provided at a position corresponding to each ridge 19 on one side of the seat plate 16, a plurality of first air ports 31 penetrating the heat dissipation grille plate 21 are opened at the end of the second shell 11, and a plurality of second air ports 32 are evenly distributed on the outside of the first shell 10, and a mesh cover 33 is fixedly connected to each first air port 31 and the second air port 32.

[0043] By providing the latch 18 and the ridge 19, the stability of the seat plate 16 after installation can be improved, and by providing the first air port 31 and the second air port 32, a passage for air flow can be provided, so that the air flow passes through the stator core 12 and the rotor 14 for heat dissipation, and by providing the mesh cover 33, it can be prevented that foreign matter is sucked into the motor to affect the operation of the motor. At the same time, a barrel groove 17 is provided on the seat plate 16 so that the air flow can smoothly flow through the barrel groove 17 in the motor, and since the barrel groove 17 is provided near the heat dissipation pipe 20 and the first air port 31 passes through the heat dissipation grille plate 21, the air flow will take away the heat from the heat dissipation pipe 20 and the heat dissipation grille plate 21 at the same time, thereby further improving the effect of passive heat dissipation, so that at this time, passive heat dissipation and active heat dissipation can simultaneously and efficiently dissipate heat for the motor, effectively reducing the copper loss and iron loss of the motor.

[0044] Moreover, compared with the design in the comparative document where the heat dissipation component is arranged outside the motor, all the heat dissipation components of this patent are arranged inside the outer shell of the motor. Thus, the outer shell provides good protection for the heat dissipation components. The heat dissipation components are built into the outer shell, enabling the heat dissipation components to directly dissipate heat from the heat-generating parts of the motor, improving the heat dissipation efficiency and ensuring the heat dissipation effect.

[0045] In this embodiment, during use, the motor is connected to the power supply and the control system to drive the motor to work. When the motor operates at a low speed or intermittently, the heat generated by the motor is relatively small at this time. The heat generated during the operation of the stator core 12 and the rotor 14 is absorbed by the heat dissipation pipe 20. The heat dissipation pipe 20 absorbs the heat and transfers it to the heat dissipation grille plate 21. Since the heat dissipation grille plate 21 is closely attached to the second outer shell 11 and its own grille pieces can contact the air over a large area, and by setting the first air port 31, the outside air can contact the heat dissipation grille plate 21. Then, the heat absorbed and transferred by the heat pipe 20 is dissipated to the outside by the heat dissipation grille plate 21 for passive heat dissipation.

[0046] During passive heat dissipation, since the motor does not drive the fan blade 23 to rotate and do work at this time, but only drives the annular seat 28 and the neodymium magnet 29 to rotate idly, the motor load is small and will not increase the working burden of the motor. And passive heat dissipation does not consume any additional energy, achieving the effect of energy conservation and power consumption reduction.

[0047] When the motor needs to operate continuously at a high speed, the heat generated by the motor is relatively large at this time, and the temperature rise inside the motor is relatively high. When the efficiency of passive heat dissipation cannot meet the heat dissipation requirements of the motor, the temperature inside the motor continues to increase until the temperature reaches the threshold preset by the thermal switch 26. Then, the thermal switch 26 conducts the circuit to energize the electromagnetic coil 25, enabling the electromagnetic coil 25 to generate a magnetic field with a fixed magnetic pole direction. Then, the electromagnetic coil 25 and the neodymium magnet 29 attract each other for magnetic coupling, connecting the power of the fan blade 23 and the annular seat 28. At this time, the annular seat 28 and the neodymium magnet 29 drive the fan blade 23 to rotate. And since the motor rotates at a high speed and the rotational speed of the fan blade 23 is the same as that of the motor at this time, the fan blade 23 rotates at a high speed to generate an air flow.

[0048] The fan blade 23 rotates to suck the outside air into the motor through the second air port 32, and the air flows through the heat-generating parts of the motor and finally flows out of the motor through the seat plate 16 and the first air port 31. Continuously doing so realizes the active heat dissipation of the air-cooling type. And the air flow flows through the surface of the heat pipe 20 and the heat dissipation grille plate 21 at the same time. Then, the air flow takes away the heat absorbed by the heat pipe 20 at the same time. Then, the heat pipe 20 can absorb heat more efficiently and transfer it to the heat dissipation grille plate 21. And the air flow will flow through the heat dissipation grille plate 21 at the same time, improving the heat dissipation effect of the heat dissipation grille plate 21. At this time, the active heat dissipation and the passive heat dissipation cooperate with each other to dissipate heat from the motor more efficiently.

[0049] During the rotation of the fan blade 23, the slip ring 34 can continuously supply power to the PCB board 24 and the electromagnetic coil 25, facilitating control.

[0050] Since the magnetic pole direction of the neodymium magnet 29 is perpendicular to the magnetic pole directions of the motor stator and rotor, and the magnetic pole directions of the neodymium magnets 29 are arranged staggeredly, and the magnetic field generated by the electromagnetic coil 25 is the same as that of the neodymium magnet 29, the magnetic force between the neodymium magnet 29 and the electromagnetic coil 25 only acts as an attraction to transmit power, and the magnetic fields generated by the neodymium magnet 29 and the electromagnetic coil 25 will not affect the normal operation of the motor.

[0051] When the motor stops working or resumes low-speed or intermittent operation, the temperature inside the motor drops, then the thermal switch 26 disconnects the circuit again, the electromagnetic coil 25 no longer generates a magnetic field, and the neodymium magnet 29 and the fan blade 23 no longer conduct power, returning to the passive heat dissipation state again. Embodiment Two

[0052] As Figure 9 shown, considering that some usage scenarios need to be exposed to a humid space or there is dust in the usage scenario, the motor needs to have dust and waterproof performance. The first air port 31 and the second air port 32 used to connect to the outside air will damage the dust and waterproof performance of the motor. Therefore, for the dust and waterproof requirements of the motor, in this embodiment, the outer surfaces of the first housing 10 and the second housing 11 adopt a fully enclosed structure, and the first air port 31, the second air port 32, and the mesh cover 33 are no longer provided.

[0053] In this embodiment, when the motor operates at low speed or intermittently, the passive heat dissipation components are the same as those in Embodiment One. The heat pipe 20 is used to efficiently conduct heat to the heat dissipation grille plate 21, so that the heat inside the motor is quickly dissipated. At this time, the motor will not drive the active heat dissipation components to work and will not do useless work.

[0054] When the motor runs at high speed for a long time, at this time, the thermal switch 26 reaches the threshold and conducts the circuit to the electromagnetic coil 25 to generate magnetism, so that the magnetic force between the neodymium magnet 29 and the electromagnetic coil 25 is coupled, and the fan blade 23 rotates together with the motor shaft 15. The fan blade 23 generates an air flow inside the enclosed motor, accelerating the circulating flow of the air inside the motor. Furthermore, the high-temperature air quickly flows through the heat dissipation grille 21, and the heat dissipation grille 21 absorbs heat and transfers it to the second housing 11 for heat dissipation. Compared with using only passive heat dissipation, after starting the active heat dissipation, the heat exchange inside the motor is more efficient, improving the heat dissipation efficiency and ensuring the heat dissipation effect.

[0055] The above stator core 12, rotor 14, heat pipe 20, PCB board 24, electromagnetic coil 25, thermal switch 26, control element 27, slip ring 34, etc. are mature existing technologies. The structures in the drawings are only for illustration and will not be elaborated herein.

[0056] As used in the specification and claims, certain terms are used to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. The specification and claims do not distinguish components by the difference in names, but by the difference in functions of the components. As used throughout the specification and claims, the term "comprising" is an open-ended term and should be interpreted as "including but not limited to". "Substantially" means within an acceptable error range, and those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect.

[0057] It should be noted that the term "including", "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a commodity or system including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such commodity or system. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of another identical element in the commodity or system including the said element.

[0058] The above description shows and describes several preferred embodiments of the present application. However, as mentioned above, it should be understood that the present application is not limited to the forms disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be changed within the scope of the application concept described herein through the above teachings or the technology or knowledge in the relevant field. And any changes and variations made by those skilled in the art without departing from the spirit and scope of the present application shall fall within the protection scope of the appended claims of the present application.

Claims

1. An adaptive magnetically coupled heat dissipation capacitor motor, characterized in that The capacitor motor with adaptive magnetic coupling heat dissipation includes: A stator core (12), a rotor (14) is rotatably arranged at the center of the stator core (12), a motor shaft (15) is fixedly connected to the center of the rotor (14), and a wire holder (13) covering the rotor (14) is fixedly connected to the stator core (12); A second housing (11), the stator core (12) is fixedly connected to a second housing (11) on one side, a first housing (10) is fixedly connected to the side of the stator core (12) away from the second housing (11), and the motor shaft (15) extends out from the center of the first housing (10); Among them, a passive heat dissipation component and an active heat dissipation component are respectively arranged in the second housing (11); The passive heat dissipation component includes a seat plate (16), the seat plate (16) is fixedly connected in the second housing (11), one end of the motor shaft (15) is rotatably connected to the seat plate (16), a plurality of heat dissipation tubes (20) are fixedly connected to the seat plate (16), the end of each heat dissipation tube (20) extends into the gap between the stator core (12) and the rotor (14), and a heat dissipation grille plate (21) is fixedly connected to the inner end of the side wall of the second housing (11), and the end of each heat dissipation tube (20) is fixedly connected to the heat dissipation grille plate (21); The active heat dissipation component includes a connecting part (22), a connecting part (22) is arranged at the center of the end of the second housing (11), a fan blade (23) is rotatably connected in the connecting part (22), the fan blade (23) is located between the seat plate (16) and the heat dissipation grille plate (21), and there is a gap between the fan blade (23) and the seat plate (16).

2. The capacitive motor with adaptive magnetic coupling heat dissipation according to claim 1, wherein A through barrel groove (17) is opened on the seat plate (16) near each heat dissipation tube (20), ridges (19) are respectively arranged in the side wall of the second housing (11), and a tenon (18) capable of being clamped with the corresponding ridge (19) is arranged on one side of the seat plate (16).

3. The capacitor motor with adaptive magnetic coupling heat dissipation according to claim 1, wherein Silicone grease is coated at the connection area between each heat dissipation tube (20) and the heat dissipation grille plate (21), and an insulating paint is sprayed on the outer surface of each heat dissipation tube (20).

4. The capacitive motor with adaptive magnetic coupling heat dissipation according to claim 1, characterized in that, An annular seat (28) is fixedly connected to one end of the motor shaft (15) close to the seat plate (16), a plurality of neodymium magnets (29) are fixedly connected to the side of the annular seat (28) close to the seat plate (16), the plurality of neodymium magnets (29) form an annular array, a PCB board (24) is fixedly connected to the inner end of the fan blade (23) close to the seat plate (16), and electromagnetic coils (25) are engraved on the surface of the PCB board (24) at positions corresponding to each neodymium magnet (29).

5. The capacitor motor with adaptive magnetic coupling heat dissipation according to claim 4, characterized in that, The magnetic pole directions between the respective neodymium magnets (29) are arranged in a staggered manner, and the magnetic pole direction of the electromagnetic coil (25) is the same as the magnetic pole direction of each neodymium magnet (29).

6. The capacitive motor with adaptive magnetic coupling heat dissipation according to claim 4, characterized in that, A thermal switch (26) is connected to the surface of the PCB board (24), a control component (27) is connected to the surface of the PCB board (24), the center of the fan blade (23) is hollow, a slip ring (34) is fixedly connected inside the connecting portion (22), the rotating end of the slip ring (34) is fixedly connected to the fan blade (23), and the slip ring (34) is connected to the PCB board (24) through a wire.

7. The capacitive motor with adaptive magnetic coupling heat dissipation according to claim 1, wherein A plurality of first air vents (31) are evenly distributed and opened at the end of the second housing (11), each of the first air vents (31) penetrates through the second housing (11) and the heat dissipation grille plate (21), a plurality of second air vents (32) are opened on the side wall of the first housing (10), and a mesh cover (33) is fixedly connected inside each of the first air vents (31) and the second air vents (32).

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