Efficient household ventilating fan with motor forced ventilation and integral heat dissipation structure

Abstract

The invention discloses an efficient household ventilating fan with a motor forced ventilation and integral heat dissipation structure. The ventilating fan comprises a motor, a wind wheel, a volute and a base, wherein the wind wheel and a rotating shaft of the motor are fixed together through the base, the motor and the volute are fixedly connected with each other, and the motor is completely arranged in the volute. By the ventilating fan, airflow which is generated when a blower of the ventilating fan rotates can forcefully ventilate and dissipate the heat of a motor housing, the unsafety factors of overhigh temperature rise and the like which are caused by poor heat dissipation condition when an embedded mounting ventilating fan operates are effectively solved, a heat dissipation effect is improved, the motor temperature rise and energy consumption are lowered, the service life of the motor is prolonged, and the efficiency of the whole ventilating fan is increased, and the product safety is ensured. Moreover, compared with the prior art, the efficient household ventilating fan also has the characteristics of convenience in maintenance and easiness in motor changing.

Description

technical field [0001] The invention relates to a household ventilation fan, in particular to an embedded ventilation fan installed on a suspended ceiling. Background technique [0002] The efficiency and service life of household ventilation fans are largely determined by the efficiency and life of the motor. At present, the most common use in my country's homes and public places is the embedded household ventilation fan installed on the ceiling. This ventilation fan is usually installed in the interlayer between the ceiling wall and the ceiling of the kitchen and bathroom. Due to the height of housing in our country, after installing the suspended ceiling, the height of the interlayer is generally very small, and the ventilation conditions are poor. In addition, in order to prevent the damp air in the bathroom from affecting the insulation performance of the ventilation fan motor, the casing of the ventilation fan motor is designed as a closed structure. In the non-airfl...

AI Technical Summary

Problems solved by technology

The lower surface of the motor is divided into two structures in the volute: one is that the end cover where the lower surface of the motor is located is set in the wind wheel, and the wind wheel base wrapped on the lower surface of the motor is provided with grooves and holes. When the wind wheel rotates, the airflow generated will force the lower surface of the motor and its end cover to dissipate heat as a whole; in another structure, there are no grooves and holes on the base of the wind wheel, and the airflow entering from the air inlet plate when the wind wheel rotates Cannot enter the area between the wind wheel and the motor, and cannot form airflow on the surface of the motor to force the surface of the motor to dissipate heat

Therefore, the ventilation and heat dissipation structure design of the existing embedded ventilation fan motor cannot ventilate and dissipate the entire motor surface, the heat dissipation effect is not ideal, and the efficiency of the motor cannot be effectively improved, thus affecting the improvement of the efficiency of the whole machine

In addition, the long-term poor heat dissipation of the motor makes the motor work at high temperature for a long time, which accelerates the aging of the enameled wire of the motor and shortens the life of the motor

In addition, when the motor is damaged, the existing technology needs to remove the whole machine from the ceiling before replacing it, which brings inconvenience to maintenance

The root cause of this problem lies in the poor heat dissipation effect of the motor, and the unreasonable structural design is just one of the important reasons for the poor heat dissipation effect of the motor.

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