A capacitor motor with adaptive magnetic coupling heat dissipation

Abstract

The present invention belongs to the technical field of capacitor motors, and specifically relates to a capacitor motor with adaptive magnetic coupling heat dissipation, comprising: a stator core, a rotor rotatably disposed at the center of the stator core, a motor shaft fixedly connected to the center of the rotor, a bobbin fixedly connected to the stator core for covering the rotor, a second housing fixedly connected to one side of the stator core, a first housing fixedly connected to the side of the stator core away from the second housing, and passive heat dissipation components and active heat dissipation components respectively disposed within the second housing. By providing the passive heat dissipation components, stable and continuous heat dissipation can be provided to the interior of the motor when the motor is operating at low speed or intermittently and the temperature rise inside the motor is not high. By providing the active heat dissipation components, when the motor is operating at a high speed and the temperature rise inside the motor is high and the passive heat dissipation components are difficult to effectively cool, a thermal switch is used to control the PCB board to be energized for magnetic coupling, so that the active heat dissipation components are activated and the passive heat dissipation components are superimposed on the heat dissipation, thereby providing a more efficient heat dissipation effect.

Description

Technical Field

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

[0002] Common motors have an iron core and winding coils. Windings have resistance, and when current is applied, they generate losses. These losses are proportional to the resistance and the square of the current. This is commonly known as copper loss. If the current is not a standard DC or sinusoidal wave, harmonic losses also occur. The iron core also experiences hysteresis and eddy currents in an alternating magnetic field, generating eddy current losses. These losses are related to the material, current, frequency, and voltage. These losses are known as iron loss. Both copper and iron losses manifest as heat, affecting the motor's temperature rise. Therefore, the heat dissipation performance of single-phase capacitor-operated motors directly impacts the motor's service life and overload capacity.

[0003] Motor losses and heat generation generally require that the temperature rise be controlled within the range required by national standards. However, for motors with different heat dissipation effects, the utilization rate of motor design materials will vary greatly under the same temperature rise standard. On the contrary, for motors with the same design parameters, the temperature rise of motors will also vary greatly if different heat dissipation effects are adopted. 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 heat dissipation design plays a decisive role.

[0004] Chinese patent publication number CN206820604U discloses a novel heat-dissipating single-phase capacitor-operated motor. The motor comprises a front cover, a rotor assembly, a stator assembly, a rear cover, and fan blades. The front and rear covers are fixedly connected by screws. The stator assembly is coaxially housed in the cavity formed by the front and rear covers. The rotor assembly is coaxially mounted in the middle of the stator assembly. The rotor shaft of the rotor assembly extends through the midpoints of the front and rear covers, respectively, and the fan blades are coaxially fixedly mounted on the shaft extending through the rear cover. The outlet of the rear cover is provided with a U-shaped protective coil, and the side of the front cover is provided with vertical holes. The end face of the rear cover is provided with crescent-shaped heat dissipation holes. The shaft drives the fan blades to rotate together, allowing them to autonomously draw in air and dissipate heat from the motor.

[0005] However, the above patent still has the following shortcomings:

[0006] 1. The fan blades described in the above patent are independently arranged outside the motor and connected to the motor's shaft, so that when the motor is working, the fan blades are synchronously driven to rotate to generate airflow, thereby dissipating heat from the motor. However, the airflow is hindered by the motor casing, resulting in a small amount of airflow entering the motor for heat dissipation, making it difficult to dissipate heat effectively.

[0007] 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 air flow 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.

[0008] 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 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 not being improved. Summary of the Invention

[0009] 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 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 by controlling 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 application 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, thereby improving the heat dissipation efficiency and ensuring the heat dissipation effect.

[0010] In order to achieve the above-mentioned object, the present invention provides the following technical solution: a capacitor motor with adaptive magnetic coupling heat dissipation, comprising:

[0011] A stator core, wherein a rotor is rotatably provided 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;

[0012] a second housing, wherein one side of the stator core is fixedly connected to the second housing, 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;

[0013] Wherein, a passive heat dissipation component and an active heat dissipation component are respectively arranged in the second shell.

[0014] Furthermore, the passive heat dissipation component includes a seat plate, which is fixedly connected to the second shell, one end of the motor shaft is rotatably connected to the seat plate, a plurality of heat dissipation pipes are fixedly connected to the seat plate, and the end of each heat dissipation pipe extends into the gap between the stator core and the rotor, and the inner end of the second shell is fixedly connected to a heat dissipation grille plate, and the end of each heat dissipation pipe is fixedly connected to the heat dissipation grille plate.

[0015] Furthermore, a through barrel groove is provided on the seat plate near each heat dissipation pipe, ridges are provided in the side walls of the second shell, and a tenon that can be engaged with the corresponding ridge is provided on one side of the seat plate.

[0016] Furthermore, the connection area between each heat pipe and the heat dissipation grid plate is coated with silicone grease, and the outer surface of each heat pipe is sprayed with a layer of insulating paint.

[0017] Furthermore, the active heat dissipation component includes a connecting portion, a connecting portion is provided at the center of the end of the second shell, a fan blade is rotatably connected in the connecting portion, 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.

[0018] Furthermore, one end of the motor shaft close to the base plate is fixedly connected to an annular seat, and one side of the annular seat close to the base plate is fixedly connected to multiple neodymium magnets. The multiple neodymium magnets form an annular array, and one end of the fan blade close to the base plate is fixedly connected to a PCB board. The surface of the PCB board is engraved with an electromagnetic coil at the corresponding position of each neodymium magnet.

[0019] Furthermore, the magnetic pole directions of the neodymium magnets are staggered, and the magnetic pole direction of the electromagnetic coil is the same as the magnetic pole direction of each neodymium magnet.

[0020] Furthermore, the PCB board is connected to a thermal switch, the surface of the PCB board is connected to a control element, the axis of the fan blade is hollow, a collector ring is fixedly connected to the connecting part, the rotating end of the collector ring is fixedly connected to the fan blade, and the collector ring and the PCB board are connected by a wire.

[0021] Furthermore, a plurality of first air ports are evenly distributed on the end of the second shell, each of which passes through the second shell and the heat dissipation grille plate, and a plurality of second air ports are opened on the side wall of the first shell, each of which is fixedly connected to a mesh cover.

[0022] In summary, compared with the prior art, the present invention has the following beneficial effects:

[0023] (1) By setting up passive heat dissipation components, it is possible to provide stable and continuous heat dissipation to the inside of the motor when the motor is working at low speed or intermittently and the temperature rise inside the motor is low, thereby reducing the copper loss and iron loss of the motor. By setting up active heat dissipation components, when the motor is working at high speed continuously and the temperature rise inside the motor is high and the passive heat dissipation components are difficult to effectively cool down, the thermal switch controls the PCB board to be energized and magnetized, so that the active heat dissipation components and the motor shaft transmission are connected through magnetic coupling, the active heat dissipation components work and superimpose the passive heat dissipation components to dissipate heat, thereby providing a more efficient heat dissipation effect.

[0024] (2) 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 and the active heat dissipation component is not needed to participate in the heat dissipation work, the motor shaft and the active heat dissipation component are disconnected, so that the motor does not need to drive the active heat dissipation component to do useless work.

[0025] (3) When active heat dissipation components are required to participate in heat dissipation during operation, magnetic coupling transmission is used to connect the motor shaft and the active heat dissipation components to perform heat dissipation work. 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.

[0026] (4) The heat dissipation components of the present application are all arranged inside the housing of the motor, and the housing is used to provide good protection for the heat dissipation components. The heat dissipation components are built into the housing, so that the heat dissipation components can dissipate heat more directly to the heating parts of the motor, thereby improving the heat dissipation efficiency and ensuring the heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a three-dimensional schematic diagram of the present application.

[0028] Figure 2 This is a side view of the application.

[0029] Figure 3 for Figure 2 Stereoscopic cross-sectional view at AA in the middle.

[0030] Figure 4 for Figure 3 A partial enlarged view of point C in the middle.

[0031] Figure 5 for Figure 2 A three-dimensional cross-sectional view of the middle BB.

[0032] Figure 6 This is an explosion diagram of this application.

[0033] Figure 7 This is a schematic diagram of the structure of the passive heat dissipation component of this application.

[0034] Figure 8This is a structural diagram of the active heat dissipation component of this application.

[0035] Figure 9 This is a three-dimensional schematic diagram of the present application having dustproof and waterproof properties.

[0036] Explanation of the reference numerals: first housing 10; second housing 11; stator core 12; bobbin 13; rotor 14; motor shaft 15; seat plate 16; barrel groove 17; tenon 18; ridge 19; heat dissipation pipe 20; heat dissipation grille plate 21; connecting portion 22; fan blade 23; PCB board 24; electromagnetic coil 25; thermal switch 26; control element 27; annular seat 28; neodymium magnet 29; annular groove 30; first air port 31; second air port 32; mesh cover 33; slip ring 34. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Example 1

[0038] like Figure 1-8 As shown, a capacitor motor with adaptive magnetic coupling heat dissipation comprises 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 bobbin 13 is fixedly connected to the stator core 12. A rotor 14 is rotatably provided at the center of the stator core 12. A motor shaft 15 passing through the end of the first housing 10 is fixedly connected at the center of the rotor 14. A seat plate 16 is fixedly connected to the inside of the second housing 11. An end of the motor shaft 15 close to the second housing 11 is rotatably connected to the seat plate 16. Then, a heat dissipation grille plate 21 is tightly fitted and fixedly connected to the inner side of the end of the second shell 11, and four heat dissipation pipes 20 are fixedly connected to the four corners of the base plate 16. One end of each heat dissipation pipe 20 passes through the base plate 16 and is fixedly connected to the heat dissipation grille plate 21. The end of each heat dissipation pipe 20 away from the heat dissipation grille plate 21 extends into the gap between the stator core 12 and the rotor 14. The connection part between each heat dissipation pipe 20 and the heat dissipation grille plate 21 is coated with silicone grease with good thermal conductivity, and the surface of the heat dissipation pipe 20 is sprayed with insulating paint.

[0039] By providing a heat dissipation pipe 20, the heat generated by the stator core 12 and the rotor 14 is transferred to the heat dissipation grid plate 21 by utilizing the heat conduction effect of the heat dissipation pipe 20, and the heat dissipation grid plate 21, which is tightly fitted with the second shell 11, is used to dissipate the heat to the external environment through the second shell 11, thereby providing stable and continuous heat dissipation inside the motor, thereby reducing the copper loss and iron loss of the motor.

[0040] Compared with the comparative documents, the 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 cooling effect.

[0041] By applying 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. Applying insulating paint on the surface of the heat dissipation pipe 20 can effectively prevent the heat dissipation pipe 20 from contacting 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.

[0042] like Figure 1-8 As shown, a connecting portion 22 is provided at the inner center of the end portion 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. 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. An annular seat 28 is fixedly connected to the 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 annular neodymium magnets 29 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 on the surface of the PCB board 24 close to the seat plate 16 at the corresponding position of each neodymium magnet 29.

[0043] By setting the fan blades 23, when the motor continues to work at high speed and the efficiency of passive heat dissipation is difficult to meet the heat dissipation requirements, the fan blades 23 are connected to the rotor 14 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.

[0044] 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 is working at low speed or intermittently and no active heat dissipation components are required to participate in the heat dissipation work, the motor shaft is disconnected from the active heat dissipation components, so that when the motor is working at low speed or intermittently, the motor does not need to drive the active heat dissipation components to do useless work. In addition, the magnetic coupling transmission method is adopted, which makes the transmission smoother when the power is connected, reducing the damage to the motor caused by sudden increase in load.

[0045] like Figure 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 the magnetic pole direction 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 slip ring 34 is fixedly connected to the connecting portion 22, the rotating end of the slip ring 34 is fixedly connected to the fan blade 23, the slip ring 34 and the PCB board 24 are connected by a wire, the rotating end of the slip 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 slip 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.

[0046] By setting a thermal switch 26, it is detected whether the internal temperature of the motor reaches a point where the passive heat dissipation efficiency cannot meet the heat dissipation requirements, and then the circuit is turned on to energize 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 magnetic poles in a fixed direction to drive the fan blades 23 to rotate for active heat dissipation, making the structure and control method simpler, and will not generate an alternating magnetic field to affect the normal operation of the motor.

[0047] like Figure 1-8 As shown, a through barrel groove 17 is provided 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 that can be 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 that pass through the heat dissipation grille plate 21 are provided 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.

[0048] By providing the tenon 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, which facilitates the air flow to flow through the stator core 12 and the rotor 14 for heat dissipation, and by providing the mesh cover 33, external impurities can be prevented from being sucked into the motor to affect the operation of the motor. At the same time, a barrel groove 17 is opened 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 pipe 20 and the first air port 31 passes through the heat dissipation grille plate 21, the air flow will also take away the heat from the heat pipe 20 and the heat dissipation grille plate 21, 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.

[0049] Moreover, compared with the design in the comparative document in which the heat dissipation components are arranged outside the motor, the heat dissipation components of the present application are all arranged inside 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, thereby improving the heat dissipation efficiency and ensuring the heat dissipation effect.

[0050] In this embodiment, when in use, the motor is connected to the power supply and the control system to drive the motor to work. When the motor is working at a low speed or intermittently, the heat generated by the motor is small. The heat generated by 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 the heat to the heat dissipation grille plate 21. Since the heat dissipation grille plate 21 is tightly fitted with the second shell 11 and its own grille plate can contact the air over a large area, and the first air outlet 31 is provided to allow the outside air to contact the heat dissipation grille plate 21, the heat dissipation grille plate 21 is used to dissipate the heat absorbed and transferred by the heat pipe 20 to the outside, thereby performing passive heat dissipation.

[0051] When passive heat dissipation is performed, since the motor does not drive the fan blades 23 to rotate and do work, but only drives the annular seat 28 and the neodymium magnet 29 to rotate idly, the motor load is small and does not increase the burden on the motor's work. Passive heat dissipation does not consume any additional energy, thereby achieving the effect of saving energy and reducing power consumption.

[0052] When the motor needs to work continuously at high speed, the motor generates a lot of heat and the temperature inside the motor rises high. When the efficiency of passive heat dissipation cannot meet the heat dissipation needs of the motor, the internal temperature of the motor continues to increase until the temperature reaches the threshold value pre-set by the thermal switch 26. The thermal switch 26 then turns on the circuit and energizes the electromagnetic coil 25, causing the electromagnetic coil 25 to generate a magnetic field with a fixed magnetic pole direction. The electromagnetic coil 25 and the neodymium magnet 29 attract each other for magnetic coupling, so that the fan blades 23 are connected to the power of the annular seat 28. At this time, the annular seat 28 and the neodymium magnet 29 drive the fan blades 23 to rotate. Since the motor rotates at a high speed and the speed of the fan blades 23 is the same, the fan blades 23 rotate at a high speed to generate airflow.

[0053] The fan blades 23 rotate to draw outside air into the motor from the second air port 32, which then flows through the heating part of the motor and finally flows out of the motor from the first air port 31 through the seat plate 16. In this way, active heat dissipation of the air-cooled type is achieved continuously, and the air flow flows through the surface of the heat pipe 20 and the heat dissipation grille plate 21 at the same time. The air flow then synchronously takes away the heat absorbed by the heat pipe 20, so that the heat pipe 20 can absorb heat more efficiently and transfer it to the heat dissipation grille plate 21, and the air flow will synchronously flow through the heat dissipation grille plate 21, so that the heat dissipation effect of the heat dissipation grille plate 21 is also improved. At this time, active heat dissipation and passive heat dissipation cooperate with each other to dissipate heat to the motor more efficiently.

[0054] During the rotation of the fan blades 23 , the slip ring 34 can continuously supply power to the PCB board 24 and the electromagnetic coil 25 , making control easier.

[0055] Since the magnetic pole direction of the neodymium magnet 29 is perpendicular to the magnetic pole direction of the motor stator and rotor, and the magnetic pole directions of the neodymium magnet 29 are staggered, and the electromagnetic coil 25 generates the same magnetic field as the neodymium magnet 29, the magnetic force between the neodymium magnet 29 and the electromagnetic coil 25 only serves as an attraction to transfer power, and the magnetic field generated by the neodymium magnet 29 and the electromagnetic coil 25 will not affect the normal operation of the motor.

[0056] When the motor stops working or switches to low speed or intermittent operation, the temperature inside the motor drops, and 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 transmit power, returning to the passive heat dissipation state. Example 2

[0057] like Figure 9 As shown, considering that some usage scenarios need to be exposed to humid spaces, or there is dust in the usage scenarios, the motor needs to have dust-proof and waterproof properties, and the first air port 31 and the second air port 32 used to connect to the outside air will destroy the dust-proof and waterproof properties of the motor. In response to the dust-proof and waterproof requirements of the motor, the outer surfaces of the first shell 10 and the second shell 11 in this embodiment 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.

[0058] When the motor in this embodiment operates at a low speed or intermittently, the passive heat dissipation component is the same as that in the first embodiment, and the heat pipe 20 is used to efficiently conduct heat to the heat dissipation grid plate 21, so that the heat inside the motor is quickly dissipated. At this time, the motor will not drive the active heat dissipation component to work and will not do useless work.

[0059] When the motor runs at high speed for a long time, the thermal switch 26 reaches the threshold value and turns on the circuit of the electromagnetic coil 25 to generate magnetism, thereby causing the neodymium magnet 29 to be magnetically coupled with the electromagnetic coil 25, causing the fan blades 23 to rotate along with the motor shaft 15. The fan blades 23 generate airflow inside the closed motor, accelerating the circulation of air inside the motor, and then allowing high-temperature air to flow quickly through the heat dissipation grille 21. The heat dissipation grille 21 absorbs heat and transfers it to the second shell 11 for heat dissipation. Compared with using passive heat dissipation alone, the heat exchange inside the motor is more efficient after starting active heat dissipation, which improves the heat dissipation efficiency and ensures the heat dissipation effect.

[0060] The above-mentioned 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 described in detail herein.

[0061] For example, certain words are used in the specification and claims 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. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of the components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve the technical problem within a certain error range and basically achieve the technical effect.

[0062] It should be noted that the terms "include," "comprises," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a product or system comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such product or system. In the absence of further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of other identical elements in the product or system comprising the element.

[0063] The above description shows and describes several preferred embodiments of the present application. However, as previously mentioned, it should be understood that the present application is not limited to the form disclosed herein and should not be construed as excluding other embodiments. Instead, the present application can be used in various other combinations, modifications, and environments and can be modified within the scope of the application concept described herein through the above teachings or technology or knowledge in the relevant field. Modifications and changes made by those skilled in the art that do not depart from the spirit and scope of the present application should be protected by the claims appended hereto.

Claims

1. A capacitor motor with adaptive magnetic coupling heat dissipation, characterized in that: The capacitor motor with adaptive magnetic coupling heat dissipation includes: A stator core (12), a rotor (14) rotatably provided at the center of the stator core (12), a motor shaft (15) fixedly connected at the center of the rotor (14), and a bobbin (13) covering the rotor (14) fixedly connected to the stator core (12); A second housing (11), one side of the stator core (12) is fixedly connected to the second housing (11), a side of the stator core (12) away from the second housing (11) is fixedly connected to the first housing (10), and the motor shaft (15) extends from the center of the first housing (10); Wherein, 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 to the second housing (11), one end of the motor shaft (15) is rotatably connected to the seat plate (16), a plurality of heat dissipation pipes (20) are fixedly connected to the seat plate (16), the end of each heat dissipation pipe (20) extends into the gap between the stator core (12) and the rotor (14), the inner end of the second housing (11) is fixedly connected to a heat dissipation grille plate (21), and the end of each heat dissipation pipe (20) is fixedly connected to the heat dissipation grille plate (21); The active heat dissipation component includes a connecting portion (22), the connecting portion (22) is provided at the center of the end of the second housing (11), a fan blade (23) is rotatably connected in the connecting portion (22), the fan blade (23) is located between the seat plate (16) and the heat dissipation grille plate (21), and a gap is left between the fan blade (23) and the seat plate (16); An annular seat (28) is fixedly connected to one end of the motor shaft (15) near the base plate (16); a plurality of neodymium magnets (29) are fixedly connected to one side of the annular seat (28) near the base plate (16); the plurality of neodymium magnets (29) form an annular array; a PCB board (24) is fixedly connected to the inner side of one end of the fan blade (23) near the base plate (16); an electromagnetic coil (25) is engraved on the surface of the PCB board (24) at a position corresponding to each neodymium magnet (29); The surface of the PCB board (24) is connected to a thermal switch (26), the surface of the PCB board (24) is connected to a control element (27), the axis of the fan blade (23) is hollow, a collector ring (34) is fixedly connected inside the connecting portion (22), the rotating end of the collector ring (34) is fixedly connected to the fan blade (23), and the collector ring (34) and the PCB board (24) are connected via a wire.

2. The capacitor motor with adaptive magnetic coupling heat dissipation according to claim 1, characterized in that: A through barrel groove (17) is provided on the seat plate (16) near each heat dissipation pipe (20), ridges (19) are provided in the side walls of the second shell (11), and a tenon (18) capable of engaging with the corresponding ridge (19) is provided on one side of the seat plate (16).

3. The capacitor motor with adaptive magnetic coupling heat dissipation according to claim 1, characterized in that: The connection area between each heat dissipation tube (20) and the heat dissipation grid plate (21) is coated with silicone grease, and the outer surface of each heat dissipation tube (20) is sprayed with a layer of insulating paint.

4. The capacitor motor with adaptive magnetic coupling heat dissipation according to claim 1, characterized in that: The magnetic pole directions of the neodymium magnets (29) are staggered, and the magnetic pole direction of the electromagnetic coil (25) is the same as the magnetic pole direction of each neodymium magnet (29).

5. The capacitor motor with adaptive magnetic coupling heat dissipation according to claim 1, characterized in that: A plurality of first air ports (31) are evenly distributed at the end of the second shell (11), and each of the first air ports (31) penetrates the second shell (11) and the heat dissipation grille plate (21). A plurality of second air ports (32) are opened on the side wall of the first shell (10), and a mesh cover (33) is fixedly connected to each of the first air ports (31) and the second air ports (32).

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