Filter screen of range hood

Abstract

The invention discloses a filter screen of a range hood. The filter screen is characterized by comprising a plurality of ventilation surfaces which are arranged side by side from left to right, wherein each ventilation surface is a concave surface with high left and right sides and a low middle part; a plurality of meshes are formed in the two side surfaces of each ventilation surface; the concave part in the middle of each ventilation surface forms a drainage trough; the concave depth of each ventilation surface is gradually increased from the front end to the back end. The filter screen is provided with the plurality of ventilation surfaces with the high two sides and the low middle part side by side and the meshes are formed in inclined planes of the ventilation surfaces, so that the filter screen has a larger area for oil fume to pass through compared with a planar filter screen, and the exhaust efficiency is improved; besides, the oil fume can collide with the side surfaces of the ventilation surfaces for a plurality of times when passing through the filter screen, so that grease can be easily condensed on the ventilation surfaces and flow into an oil cup along the drainage troughs; moreover, because the oil fume collides with the filter screen for a plurality of times, the oil fume flow can be scattered, and then the rectifying effect of the oil fume passing through the filter screen is improved.

Description

technical field [0001] The invention relates to a range hood, in particular to a filter screen for the range hood. Background technique [0002] Existing range hoods, whether they are top-suction or side-suction, are usually provided with a filter at the air inlet of the fan to enhance the effect of oil fume separation. And the filter screen commonly used at present, as the self-cleaning filter screen of a kind of range hood that the Chinese patent application of application number 201210472911.5 is disclosed, filter mesh is arranged on the filter screen; The oil net for the range hood has a number of air intake holes, which are in the shape of a lower periphery and a higher middle; another example is a range hood oil net disclosed in the Chinese patent application number 201020202030.8, which includes a rectangular plate The outer oil net and the inner oil net are respectively provided with circular mesh holes. [0003] Although the above-mentioned filters are densely cov...

AI Technical Summary

Problems solved by technology

[0003] Although the above-mentioned filters are densely covered with mesh holes, the area of ​​the air intake is still small, resulting in a sharp drop in the air intake; the oil fume directly passes through the mesh holes and enters the air inlet, the residence time is short, the contact area is small, and the grease and The separation effect of flue gas is not ideal, and the rectification effect on flue gas is not obvious

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