Large-air-pressure constant-air-volume silent extractor hood

Abstract

The invention discloses a large-air-pressure constant-air-volume silent extractor hood. The large-air-pressure constant-air-volume silent extractor hood comprises a fume collecting cover assembly with a filter screen cover, a shell assembly, a host panel, a check valve and an air channel assembly. The shell assembly is arranged at the middle position of the fume collecting cover assembly. A sound absorption and noise reduction structure is arranged in the shell assembly. The host panel is arranged on the outer portion of the shell assembly in a covering manner. The check valve is arranged at the top of the shell assembly. The air channel assembly is mounted in the shell assembly and is longitudinally arranged in the middle. An air inlet is formed in the position, towards the two sides, of the air channel assembly. An air inlet channel with the uniform and equivalent air inlet volume is formed by the two sides of the air channel assembly and the inner wall of the shell assembly. An outer rotor motor and an impeller assembly are arranged in the air channel assembly. The large-air-pressure constant-air-volume silent extractor hood has a good effect on solving the problem about discharge of lower-layer users sharing a flue, and has the beneficial effects of being large in air volume and pressure, low in noise, constant in air volume and the like.

Description

technical field [0001] The invention relates to the technical field of range hoods, in particular to a static range hood with high wind pressure and constant air volume, which has a compact structure, large air volume, high pressure and low noise, and can maintain constant air volume under different environments. Background technique [0002] At present, the range hoods on the market generally use ordinary induction inner rotor motors, and the motor is placed on the side of the air duct structurally. If double air inlet impellers are used, the side where the motor is placed hinders the air inlet of the impellers, reducing the air inlet area. . Because the air inlet area on both sides of the air duct is different, the position of the air duct on the whole machine is not symmetrical. With such a structure, the air volume, pressure, noise and other performances of the range hood cannot be improved. In addition, the common flue cross-sectional area of ​​high-rise residential b...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem that the ordinary inner rotor motor of the range hood prevents the air intake of the impeller, the air intake area at the impeller is small; the eddy current loss is caused by the asymmetric flow inside the air flow structure, and provides a compact structure , Large air volume, high pressure, low noise, and can maintain constant air volume in different environments

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