Oblique flow fan having anti-corrosion function

Abstract

The invention provides an oblique flow fan having an anti-corrosion effect to solve the problem that an existing oblique flow fan is not adapted to be used in a ventilating duct containing corrosive gas. The oblique flow fan adopts a brushless motor completely wrapped with general-purpose plastics, and the brushless motor is completely isolated from the corrosive gas, and is thus not eroded by thecorrosive gas. In addition, on the condition that the brushless motor is completely wrapped, ventilation and heat dissipation design is conducted, so that normal operation of the motor is ensured, nooverheating is caused, and the service life of the brushless motor is guaranteed; owing to a ventilation and heat dissipation structure, heat of a circuit board can be taken away, and normal operation of the circuit board can be ensured; furthermore, the shape of a movable impeller and the shape of a stationary impeller are designed by a three-dimensional flow theory, so that air pressure and theair quantity can be increased effectively, the air pressure can reach 400 Pa, the air quantity can reach 1800 m<3> / h, and the existing oblique flow fan in the market merely has the air pressure of 200 Pa and the air quantity of 1000 m<3> / h.

Description

technical field [0001] The invention relates to a diagonal flow fan, more specifically, to a diagonal flow fan with anti-corrosion function. Background technique [0002] In general, the ventilation system of a laboratory or chemical plant is extremely important. In order to improve the efficiency of ventilation, it is necessary to increase the flow rate of the fluid in the ventilation duct. Since the diameter of the duct of the ventilation system is usually not particularly large, because if the diameter of the duct is large, the cost of the entire ventilation system will be high, so the diameter of the ventilation duct only needs to be able to make the wind speed and volume meet the requirements of use, so the ventilation duct The diameter will not be too large. In small ventilation ducts, in order to increase the velocity of the fluid, it is necessary to increase the wind pressure. A centrifugal fan can be used to increase the wind pressure, but the installation of the c...

AI Technical Summary

Problems solved by technology

[0004] However, general oblique flow fans are not suitable for use in laboratories or chemical plants containing corrosive gases

Because the motors used in general oblique flow fans are exposed to the air and do not have anti-corrosion functions, the service life of the motors is short

Images