Brushless direct-current magnetic water pump

Abstract

The invention provides a brushless direct-current magnetic water pump. The brushless direct-current magnetic water pump comprises a brushless direct-current motor, a pump seat, a pump cover and impellers. The brushless direct-current motor comprises a hollow motor shell, an electronic reversing control panel in the motor shell, and an end cover connected to one end of the motor shell in a sealed mode. The electronic reversing control panel is installed on the inner end face of the end cover, and a cooling water chamber for cooling the electronic reversing control panel is arranged on the outer end face of the end cover. One end of the pump seat is connected with the outer end face of the end cover in a sealed mode. The pump seat is provided with a water inflow hole and a water drainage hole which are communicated with the cooling water chamber respectively. The water inflow hole, the cooling water chamber and the water drainage hole form a fluid flow channel. The pump cover is connected with the other end of the pump seat in a sealed mode. An inner cavity is formed in the pump cover and communicated with the water inflow hole and the water drainage hole of the pump seat. Heat generated by the electronic reversing control panel is forcibly circulated and brought out in an end face water-cooling mode, the control panel can be cooled effectively and rapidly, the cooling performance of the motor is improved, and the service life of the motor is prolonged.

Description

technical field [0001] The invention relates to the field of water pumps, in particular to a brushless direct current magnetic force water pump which dissipates heat to a control board of a direct current brushless motor through end surface water cooling. Background technique [0002] The brushless DC magnetic water pump is equipped with a brushless DC motor, which drives the impeller to rotate. The heat dissipation of the electronic components of the brushless DC motor's control board directly affects the performance of the motor. The first prior art adopts forced air cooling to dissipate heat for the electronic commutation control board, that is, the control board is installed at the bottom of the motor housing, the motor housing is provided with an air inlet and an air outlet, and the rotor part is equipped with a cooling fan. After the motor is running, the cooling fan will inhale the wind from the air inlet and discharge it from the air outlet to achieve the air cooling...

AI Technical Summary

Problems solved by technology

The disadvantage of this structure is that the air inlet of the motor casing directly communicates with the rotor parts inside the motor, the dustproof and waterproof effects are poor, and the application is limited to a certain extent, and the service life of the motor is greatly reduced during use.

[0003] The second prior art also uses air cooling to dissipate heat from the electronic reversing control board. The control board is installed at the bottom of the motor housing, but the motor housing is not provided with air inlets and outlets, and the inside and outside of the motor housing are completely isolated. , so the dustproof and waterproof level is high

Although the dustproof and waterproof performance of this structure is better, it can only balance the heat of the control board, and the heat dissipation still depends on the natural heat dissipation of the motor shell, and the heat dissipation effect is not obvious, especially when the working environment temperature of the motor is high (such as above 100°C) ), it is impossible to dissipate heat to the control board in the motor. The motor runs under the condition of high ambient temperature and poor heat dissipation effect, which will reduce the life of the control board, which will also reduce the service life of the motor and even the water pump.

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