Multistage filtering device used for extractor hood

Abstract

A multi-stage filter device for a range hood, characterized in that it includes an oil filter plate, the oil filter plate has a U-shaped oil filter groove formed by indenting toward the same side of the oil filter plate, and the U-shaped filter plate The oil grooves are parallel to each other and distributed at intervals in turn. On the two opposite side walls of the U-shaped oil filter groove, there are respectively a first oil filter hole and a second oil filter hole. The first oil filter hole and the second oil filter hole are both Distributed at intervals along the length direction of the U-shaped oil filter groove and staggered from each other. The present invention has the advantages that: because the U-shaped oil filter grooves of the oil filter plate of the multi-stage filter device are parallel to each other and distributed in intervals in sequence, and the first oil filter hole and the second oil filter hole on the two opposite side walls of the U-shaped oil filter groove They are distributed at intervals along the length direction of the U-shaped oil filter groove and staggered from each other. Therefore, the oil fume entering the U-shaped oil filter groove can pass through the first oil filter hole and the inner surface of the oil filter groove while colliding with the inner surface of the oil filter groove. The side walls collide, thereby further improving the oil filtering effect.

Description

technical field [0001] The invention relates to a filtering device, in particular to a multi-stage filtering device for range hoods. Background technique [0002] When the range hood is working, it will inhale a large amount of oil fume. The inhaled oil fume is easy to accumulate in the air duct and form a large amount of oil pollution. Due to the high viscosity of the formed oil pollution, it is difficult to discharge from the air outlet of the air duct. Therefore, the oil pollution will not only corrode the pipe , shorten the life of the range hood, but also increase the use and maintenance costs of the range hood. [0003] In order to solve this problem, the common method at present is to install a fume filter device at the air inlet of the range hood. The more common method is to use two layers of perforated filter plates. For example, the patent number is ZL 200620062667.5 (the authorized announcement number is CN 2937877Y) the Chinese utility model patent disclosed "t...

AI Technical Summary

Problems solved by technology

Although the above oil fume filtering device has better oil filtering effect, its structure is relatively complicated and needs to be further improved.

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