阅读说明：本技术 快速散热型永磁耦合器 (Quick heat dissipation type permanent magnet coupler ) 是由 梁康有 谭宇航 肖天伦 周虹君 于 2020-03-30 设计创作，主要内容包括：本发明属于由周围空气流过的冷却或通风的发电、变电或配电设备技术领域,公开了一种快速散热型永磁耦合器,包括外壳、输入轴和输出轴,输入轴上固定有铜转子,输出轴上固定有永磁转子,永磁转子位于铜转子内；外壳上设有多个散热孔,还包括冷却部,冷却部包括与输入轴转动连接的定位块,定位块上设有多条导流通道,导流通道的进气端位于靠近外壳处,导流通道的出气端朝向铜转子,导流通道的直径沿靠近出气端处逐渐减小；输入轴上还固定有若干将外部气体导入导流通道的散热翅片。本发明解决了现有技术仅通过排出热气,只能实现减少永磁转子升温,不能实现对永磁转子降温,进而使得长时间运行后,永磁转子因高温消磁,无法稳定运行的问题。(The invention belongs to the technical field of cooling or ventilating power generation, transformation or distribution equipment through which ambient air flows, and discloses a rapid heat dissipation type permanent magnet coupler which comprises a shell, an input shaft and an output shaft, wherein a copper rotor is fixed on the input shaft, a permanent magnet rotor is fixed on the output shaft, and the permanent magnet rotor is positioned in the copper rotor; the shell is provided with a plurality of heat dissipation holes, the cooling part comprises a positioning block rotatably connected with the input shaft, a plurality of flow guide channels are arranged on the positioning block, the air inlet ends of the flow guide channels are positioned close to the shell, the air outlet ends of the flow guide channels face the copper rotor, and the diameters of the flow guide channels are gradually reduced along the positions close to the air outlet ends; the input shaft is also fixed with a plurality of radiating fins for guiding external air into the flow guide channel. The invention solves the problems that the temperature rise of the permanent magnet rotor can only be reduced and the temperature reduction of the permanent magnet rotor can not be realized only by discharging hot gas in the prior art, so that the permanent magnet rotor can not stably operate due to high-temperature demagnetization after long-time operation.)

1. Quick heat dissipation type permanent magnet coupler includes the shell and runs through the input shaft and the output shaft at shell both ends respectively, still includes the copper rotor and is located the permanent magnet rotor of copper rotor, and forms the gas seam between permanent magnet rotor and the copper rotor, and the copper rotor is fixed on the input shaft, and the permanent magnet rotor is fixed on the output shaft, is equipped with a plurality of louvres, its characterized in that on the shell: the cooling part comprises a positioning block fixed on the inner side of the shell, the input shaft is rotatably connected to the positioning block, a plurality of flow guide channels are arranged on the positioning block, the air inlet ends of the flow guide channels are positioned close to the shell, the air outlet ends of the flow guide channels face the copper rotor, and the diameters of the flow guide channels are gradually reduced along the direction close to the air outlet ends; the input shaft is also fixed with a plurality of radiating fins for guiding external air into the flow guide channel.

2. The fast heat dissipating permanent magnetic coupler of claim 1, wherein: the cooling portion is equipped with two, and the locating piece and the output shaft of another cooling portion rotate to be connected.

3. The fast heat dissipating permanent magnetic coupler of claim 2, wherein: and flow guide covers wrapping the radiating fins are fixed on the positioning blocks, and the flow guide channels are positioned on the inner rings of the flow guide covers.

4. The fast heat dissipating permanent magnetic coupler of claim 3, wherein: the air guide sleeve is conical, and the free end of the air guide sleeve is abutted to the inner side of the shell.

5. The fast heat dissipating permanent magnetic coupler of claim 4, wherein: and a flow blocking disc is further fixed on the stator, and the air outlet end of the flow guide channel is positioned between the flow blocking disc and the copper rotor.

6. The fast heat dissipating permanent magnet coupler of any of claims 1-5, wherein: the heat dissipation part comprises a heat dissipation barrel fixed on the inner side of the shell, a sliding plate is vertically connected in the heat dissipation barrel in a sliding mode, an exhaust pipe communicated with the outside is arranged at the top of the heat dissipation barrel, an exhaust check valve is arranged on the exhaust pipe, an air guide port is arranged on the sliding plate, an air guide check valve is arranged in the air guide port, an air inlet is fixed at the bottom of the heat dissipation barrel, and an air inlet check valve is arranged in the air inlet; the bottom of the sliding plate is also fixedly provided with a push rod penetrating through the bottom of the heat dissipation barrel, and the outer ring of the copper rotor is fixedly provided with a driving block for intermittently pushing the push rod.

7. The fast heat dissipating permanent magnetic coupler of claim 6, wherein: and a balancing weight is fixed at the bottom of the push rod.

8. The fast heat dissipating permanent magnetic coupler of claim 7, wherein: and a spring is welded between the sliding plate and the bottom of the heat dissipation barrel.

9. The fast heat dissipating permanent magnetic coupler of claim 8, wherein: the balancing weight is spherical.

10. The fast heat dissipating permanent magnetic coupler of claim 9, wherein: the driving block is arc-shaped.

Technical Field

The invention belongs to the technical field of cooling or ventilating power generation, transformation or distribution equipment through which ambient air flows, and particularly relates to a rapid heat dissipation type permanent magnet coupler.

Background

The permanent magnet coupler is also called a magnetic coupling and a permanent magnet transmission device. The permanent magnet motor mainly comprises a copper rotor, a permanent magnet rotor and a controller. At the in-process of permanent magnet coupler operation, quick rotation all can take place for copper rotor and permanent magnet rotor, and the magnetic induction acting can make copper rotor and permanent magnet rotor produce the heat, and the heat can lead to the demagnetization of permanent magnet rotor, appears the slew rate and reduces or unable pivoted condition, consequently needs cool down permanent magnet rotor. The cooling mode that currently generally uses is forced air cooling, through at the magnetic conduction dish outside installation radiating fin, relies on the magnetic conduction dish to rotate, forms the vortex, takes out more heat in to reach the effect of cooling.

However, this method can only discharge the gas with higher temperature to reduce the temperature rise, but cannot achieve the effect of temperature reduction. In order to ensure that the demagnetization condition can not occur after long-time operation, the temperature of the permanent magnet rotor is reduced and rapidly reduced while the temperature rise is reduced, so that the stable operation of the permanent magnet rotor is ensured.

Disclosure of Invention

The invention aims to provide a quick heat dissipation type permanent magnet coupler to solve the problems that in the prior art, only through discharging hot gas, the temperature rise of a permanent magnet rotor can be reduced, the temperature reduction of the permanent magnet rotor cannot be realized, and further, after the permanent magnet rotor runs for a long time, the permanent magnet rotor cannot stably run due to high-temperature demagnetization.

In order to achieve the purpose, the invention provides the following technical scheme that the rapid heat dissipation type permanent magnet coupler comprises a shell, an input shaft and an output shaft, wherein the input shaft and the output shaft respectively penetrate through two ends of the shell; the input shaft is also fixed with a plurality of radiating fins for guiding external air into the flow guide channel.

The technical principle of the technical scheme is as follows:

the input shaft rotates when the permanent magnet coupler operates to drive the radiating fins to rotate, so that gas is guided, external gas is guided into the guide channel and blown to the copper rotor from the gas outlet end of the guide channel, and the copper rotor is cooled. Because the material characteristic of copper rotor, its heat conductivity is good, consequently can be fast after the copper rotor cooling, can take place the heat exchange with permanent magnet rotor, realize permanent magnet rotor's temperature reduction.

The copper rotor and the permanent magnet rotor can generate heat when rotating, so that the temperature in the shell is higher, and the temperature of gas guided into the guide channel through the radiating fins is lower; meanwhile, the diameter of the flow guide channel towards the air outlet end is gradually reduced, so that the flow speed of gas discharged from the air outlet end is high, the temperature is low, and the cooling effect and efficiency can be improved.

The beneficial effects of the technical scheme are as follows:

1. by arranging the radiating fins on the input shaft, when the permanent magnet coupler operates, the input shaft can rotate to drive the radiating fins to rotate, so that external gas is guided into the guide channel and discharged from the gas outlet end of the guide channel and is blown on the copper rotor, and the copper rotor is cooled; because the copper rotor has good heat conductivity, after heat dissipation, the copper rotor can exchange heat with the permanent magnet rotor, and further the permanent magnet rotor is cooled;

2. the diameter of the flow guide channel is gradually reduced towards the direction of the air outlet end, the flow speed is gradually increased when the air flows in the flow guide channel, and the temperature of the air is gradually reduced according to the Bernoulli principle, so that the temperature of the air discharged from the air outlet end is low, and the copper rotor can be quickly and efficiently cooled;

in summary, compared with the prior art that hot gas on the inner side of the shell is exhausted, the technical scheme introduces gas with lower external temperature, and realizes temperature reduction through heat exchange between the gas and the copper rotor; simultaneously, because this technical scheme's concrete structure setting can make to blow and spill the gas temperature on the copper rotor and further reduce, and then improve the effect and the speed of cooling, realize quick, the efficient cooling.

Furthermore, the cooling part is provided with two, and the locating piece of another cooling part is connected with the output shaft rotation.

Has the advantages that: set up another cooling portion in output shaft one side, can realize cooling down the copper rotor of opposite side, realize the effect and the speed of improvement cooling to copper rotor both sides synchronous cooling.

Furthermore, the positioning blocks are fixed with air guide sleeves wrapping the radiating fins, and the air guide channels are located on inner rings of the air guide sleeves.

Has the advantages that: through the setting of kuppe, can carry out the water conservancy diversion to the external gas, in the gaseous whole diversion passageways that get into of being convenient for, the convenience is cooled down the copper rotor.

Furthermore, the air guide sleeve is conical, and the free end of the air guide sleeve is abutted against the inner side of the shell.

Has the advantages that: the air guide sleeve is arranged to be conical, so that the air inlet end of the air guide sleeve is wider in wrapping range, and more gas can be guided; meanwhile, the free end of the air guide sleeve is abutted against the inner side of the shell, so that the phenomenon that gas with higher temperature in the shell is led into the air guide channel can be avoided, and the cooling effect is further prevented from being influenced.

Furthermore, a flow blocking disc is fixed on the stator, and the air outlet end of the flow guide channel is positioned between the flow blocking disc and the copper rotor.

Has the advantages that: the gas discharged through the flow guide channel is positioned between the flow blocking disc and the copper rotor, so that the outward diffusion speed of the gas can be reduced, the contact between the gas and the copper rotor is prolonged, the heat exchange time between the gas and the copper rotor is prolonged, and the cooling effect on the copper rotor is improved.

The heat dissipation part comprises a heat dissipation barrel fixed on the inner side of the shell, a sliding plate is vertically connected in the heat dissipation barrel in a sliding mode, an exhaust pipe communicated with the outside is arranged at the top of the heat dissipation barrel, an exhaust check valve is arranged on the exhaust pipe, an air guide port is arranged on the sliding plate, an air guide check valve is arranged in the air guide port, an air inlet is fixed at the bottom of the heat dissipation barrel, and an air inlet check valve is arranged in the air inlet; the bottom of the sliding plate is also fixedly provided with a push rod penetrating through the bottom of the heat dissipation barrel, and the outer ring of the copper rotor is fixedly provided with a driving block for intermittently pushing the push rod.

Has the advantages that: the heat dissipation part is arranged, so that gas with high temperature in the shell can be discharged outwards, and the influence of the gas with high temperature on the cooling effect of the external gas is reduced. When the copper rotor rotates, the driving block is driven to rotate, when the driving block rotates to be abutted against the push rod, the push rod is gradually pushed to move upwards, the sliding plate is driven to move upwards, the sliding plate extrudes gas on the upper part of the heat dissipation barrel, and the gas is discharged through the exhaust pipe; meanwhile, the lower part of the heat dissipation barrel sucks the gas with higher temperature in the shell through the air inlet. Along with the rotation of copper rotor, the drive block breaks away from the push rod gradually for the push rod slides down under the action of self gravity and the gravity of slide, and then leads into heat dissipation bucket upper portion through leading the gas port with the gas of heat dissipation bucket lower part. Through the continuous rotation of copper rotor, can last above-mentioned action, and then accomplish the gas discharge of the higher temperature of shell inside.

Furthermore, a balancing weight is fixed at the bottom of the push rod.

Has the advantages that: under the effect of balancing weight, can realize moving down fast of slide for the operation effect of whole radiating part is good.

Further, a spring is welded between the sliding plate and the bottom of the heat dissipation barrel.

Has the advantages that: set up the spring, can avoid the balancing weight to drive the slide and move down fast, the striking heat dissipation bucket that causes avoids the heat dissipation bucket impaired.

Further, the balancing weight is spherical.

Has the advantages that: the balancing weight is set to be spherical and has a cambered surface, so that the driving block can be conveniently pushed.

Further, the driving block is arc-shaped.

Has the advantages that: the driving block is arc-shaped and has a cambered surface, so that the driving block is convenient to contact with the balancing weight, the push rod is convenient to push upwards, and meanwhile, the driving block with the cambered surface has no edge angle, so that the balancing weight can be prevented from being scratched; and no noise is generated when the balancing weight is contacted with the driving block, and the influence of the external environment is reduced.

Drawings

FIG. 1 is a longitudinal sectional view of embodiment 1 of the present invention;

fig. 2 is a schematic structural view of a heat dissipation portion in embodiment 2 of the present invention.

Detailed Description

The following is further detailed by way of specific embodiments:

reference numerals in the drawings of the specification include: the device comprises an input shaft 1, an output shaft 2, a copper rotor 3, a permanent magnet rotor 4, a positioning block 5, a flow guide channel 51, a flow blocking disc 52, a flow guide cover 53, a heat dissipation fin 6, a heat dissipation barrel 7, an air inlet 71, an exhaust pipe 72, a sliding plate 8, an air guide opening 81, a push rod 82, a balancing weight 83 and a driving block 9.