Lampblack whizzing device for air outlet of extractor hood

Abstract

The invention discloses a lampblack whizzing device for an air outlet of an extractor hood. The lampblack whizzing device for the air outlet of the extractor hood comprises a shell, wherein a rotating shaft is arranged in the shell; at least one impeller is arranged on the rotating shaft; a plurality of planar or curved-surface-shaped blades or curved-surface-shaped blades with planar regions are uniformly distributed on the periphery of each impeller in a divergence manner; the surfaces of the impellers (including the blades) can be processed into rough surfaces or surfaces with grains; or oleophilic coatings are sprayed on the surfaces of the impellers, so that oil molecules can be captured well. The lampblack whizzing device for the air outlet of the extractor hood has the technical effect that the device is mounted on an air outlet seat of the extractor hood, therefore, the air inlet area of the extractor hood cannot be affected, and corresponding air quantity and noises are not affected; because the impellers are driven to rotate by gas discharged from the extractor hood, the impellers can adapt to different flows; extra power is not required, therefore, the structure is simple, and the cost is low; and the areas of the blades on the impellers can be large relatively, during rapid rotation of the impellers, the blades can be in contact with the oil molecules widely, and therefore, the oil removal efficiency is improved effectively.

Description

technical field [0001] The invention relates to the technical field of oil and gas spin-off of range hoods, in particular to an oil fume spin-off device for an air outlet of a range hood, and in particular to its mechanical connection structure. Background technique [0002] The disclosed devices for degreasing in range hoods mainly include the following types: 1. Degreasing by placing a relatively dense filter screen at the air inlet of the range hood. 2. By setting two or more layers of relatively dislocated nets at the air inlet of the range hood, there are more opportunities for the range hood to touch the surface of the net when it passes by. 3. By adding a mesh at the air inlet of the fan to make it rotate together with the impeller or motor, when the oil fume passes through the rotating mesh, it is easy to be intercepted. The above three types of methods are all helpful to improve the degreasing performance, but the effect is not significant. At the same time, becaus...

AI Technical Summary

Problems solved by technology

The above three types of methods are all helpful to improve the degreasing performance, but the effect is not significant. At the same time, because these methods will reduce the area of ​​oil fume inhalation, the negative effect is that the air volume of the range hood will be certain. on descent, and sometimes increased noise

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