Fan assembly and household electrical appliance with it

Abstract

The invention discloses a draught fan assembly and a household electric appliance with the same. The draught fan assembly comprises a motor support, a motor, an impeller and a flow collection structure. A through hole is formed in the motor support. The motor is fixed to the front side of the motor support. The impeller is located in the through hole and is connected with a motor shaft of the motor. The flow collection structure is arranged on the motor support and corresponds to the through hole. The rear end face of the flow collection structure is located on the rear side of the rear surface of the motor support. The cross section of the flow collection structure is in a circular ring shape. The rotation outer diameter of the impeller is D1, and the inner diameter of the flow collection structure is D2, wherein 1.02D1<=D2<=1.09D1. By means of the draught fan assembly, the air outlet amount of the draught fan assembly is easily increased, and noise of the draught fan assembly is easily lowered; and furthermore, compared with a manner for increasing the air volume of the draught fan assembly in the prior art, reduction of cost is facilitated, the size of the draught fan assembly is reduced, and the use reliability of the draught fan assembly is improved.

Description

technical field [0001] The invention relates to the technical field of household electrical appliances, in particular to a fan assembly and a household electrical appliance having the same. Background technique [0002] Generally, a fan is usually provided in a household appliance to facilitate heat dissipation of the household appliance. [0003] The air volume blown by the fan assembly in the related art is small and the noise is large. Although the air supply volume can be increased by increasing the speed of the motor, this leads to greater noise of the fan assembly, and the high speed of the motor increases the loss of the motor, increases the cost, and reduces the reliability and safety. In addition, when the air volume is not enough, a large-diameter impeller is sometimes used to solve the problem. This will not only increase the volume of the fan component itself, but also increase the overall volume of the household appliances. Moreover, considering that the large-...

AI Technical Summary

Problems solved by technology

[0003] The air volume blown by the fan assembly in the related art is small and the noise is large

Although the air supply volume can be increased by increasing the speed of the motor, this leads to greater noise of the fan assembly, and the high speed of the motor increases the loss of the motor, increases the cost, and reduces the reliability and safety

In addition, when the air volume is not enough, a large-diameter impeller is sometimes used to solve the problem. This will not only increase the volume of the fan component itself, but also increase the overall volume of the household appliances. Moreover, considering that the large-diameter impeller is easy to deform under high temperature, this There are higher requirements for the material of the large-diameter impeller, and stricter requirements for the adjustment of dynamic balance, resulting in an increase in material costs and installation costs

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