Brushless DC Magnetic Water Pump

Abstract

The invention provides a brushless DC magnetic force water pump, which includes a brushless DC motor, a pump base, a pump cover and an impeller. The brushless DC motor includes a hollow motor casing, an electronic reversing control board arranged in the motor casing, And the end cover sealedly connected to the end of the motor casing, the electronic reversing control board is installed on the inner end surface of the end cover, and the outer end surface of the end cover is provided with a cooling water chamber for cooling the electronic reversing control board; one end of the pump base It is sealed and connected with the outer end face of the end cover. The pump base is provided with a water inlet hole and a water outlet hole respectively connected with the heat dissipation water chamber. The water inlet hole, the heat dissipation water chamber and the water outlet hole constitute a fluid circulation channel; One end is sealed and connected, the pump cover has an inner cavity, and the inner cavity communicates with the water inlet hole and the water outlet hole of the pump base. In the invention, the heat generated by the electronic commutation control board is forcibly circulated out through the end surface water cooling method, which can effectively and quickly dissipate heat from the control board, improve the heat dissipation performance of the motor, and prolong the service life of the motor.

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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