Double-face-air-incoming bidirectional multi-blade centrifugal fan type air exchange device and working method thereof

Abstract

The invention discloses a double-face-air-incoming bidirectional multi-blade centrifugal fan type air exchange device and a working method thereof. The air exchange device comprises a box shell, a reflecting panel, a double-face-air-incoming multi-blade centrifugal fan and two gold pipes, the reflecting panel, the double-face-air-incoming multi-blade centrifugal fan and the gold pipes are arrangedin the box shell, the reflecting panel and the gold pipes are positioned on the left side of the box shell, the centrifugal fan is positioned on the right side of the box shell, the end of the reflecting panel is fixed on the inner wall of the left side of the box shell, the reflecting panel is positioned at 1/2 height of the box shell, an air incoming grating is arranged on the upper surface ofthe box shell and directly faces the reflecting panel, the gold pipes are positioned on the reflecting panel, one side, close to the centrifugal fan, of the reflecting panel is of a flat plate structure, and the other side of the reflecting panel is of a wavy structure. The air exchange device and the working method are large in air quantity, high in pressure coefficient and low in noise.

Description

technical field [0001] The invention relates to a ventilation device and a working method thereof, in particular to a double-sided air intake bidirectional multi-blade centrifugal fan type ventilation device and a working method thereof. Background technique [0002] At present, the two-way multi-blade centrifugal fan type ventilator generally has the problem of low performance, which cannot be compared with the one-way fan. Today, as the ventilation industry is increasingly miniaturizing products, it is necessary to improve the performance of the two-way multi-blade centrifugal fan ventilation device. [0003] In view of the characteristics of large flow coefficient, high pressure coefficient and compact structure, multi-blade centrifugal fans have been widely used in industrial products, and are also widely used in household appliances such as household ventilation devices. Its structure includes motor, volute and impeller. At present, for the structure of the ventilatio...

AI Technical Summary

Problems solved by technology

At present, most of the two-way multi-blade centrifugal fan volute structure is figure 1 and figure 2 As shown, the air ducts of this structure are symmetrically distributed, the air outlet and the air exchange port are on the same side, and the air outlets are axially parallel and in the same direction. This structure can meet the same air duct for forward rotation and reverse rotation, but with this The air volume to the blade impeller is small, the pressure coefficient is low, and the noise is large

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