Air inlet mesh enclosure for extractor hood

Abstract

The invention provides an air inlet mesh enclosure for an extractor hood. The air inlet mesh enclosure comprises a double-layer structure which is respectively an outer mesh enclosure and an inner mesh enclosure, wherein an outer top surface, an outer-side wall surface and an outer bottom surface are arranged on the outer mesh enclosure, an inner top surface, an inner-side wall surface and an inner bottom surface are arranged on the inner mesh enclosure, the outer-side wall surface of the outer mesh enclosure and the inner-side wall surface of the inner mesh enclosure are distributed in parallel with each other, stripe-shaped air inlets are evenly distributed on the outer-side wall surface, blind window blades are arranged on the inner-side wall surface corresponding to the air inlets, the blind window blades and the air inlets are arranged opposite to each other in the longitudinal direction, an annular cascade is formed by the blind window blades along the cross section which is perpendicular to the normal direction at the inner top surface, and the deflecting direction of the annular cascade-shaped blind window blades is clockwise or anticlockwise. When the air inlet mesh enclosure is used, a tornado effect can be generated, and the suction force of the extractor hood can be greatly improved, so that the a smoke sucking effect is improved; and a cyclone separating effect is generated due to the tornado effect, so that the degree of fat separation is greatly improved, and the air inlet mesh enclosure is small in resistance.

Description

technical field [0001] The invention relates to an air intake net cover of a range hood. Background technique [0002] At present, top-suction range hoods on the market are often equipped with an air inlet grille at the oil fume suction port. There are many types of air inlet grilles, and the most common ones are filter mesh type and punched plate type (through holes or flanged holes) , Condensing plate type, two-layer or multi-layer combination type, etc. The main function of this air intake grille is only one, which is to separate oil fumes and guide oil. According to the different grease separation methods, these air intake screens can also be divided into filtration method, physical inertia method, condensation method or combination method and so on. For example, Chinese Patent Document No. CN101144631 disclosed a rotary easy-to-clean free oil net on March 19, 2008, which is characterized in that: there are two or more layers of inner and outer net covers connected and...

AI Technical Summary

Problems solved by technology

However, the above-mentioned oil net is the same as the air inlet grilles of other aforementioned modes, and there is a common problem, that is, the resistance of oil separation is large, which affects the suction; the resistance of oil with small resistance is poor.

[0003] At present, there are some oil fume purification methods on the market that are good at separating oil and have little effect on suction, such as the electrostatic method, but due to the high cost and immature technology, they have not been widely used in the hood industry

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