Extractor hood

Abstract

An extractor hood comprises a fan outer cover and a smoke collection cover. The extractor hood is characterized in that a movable smoke blocking plate is mounted on each of the left side and the right side of the smoke collection cover, is arc-shaped and is provided with a concave face downward, and the movable smoke blocking plate is driven by a driving mechanism to upwards contract into the smoke collection cover or downwards extend out of the same along an arc-shaped track. The extractor hood has the advantages that the arc-shaped movable smoke blocking plates are mounted on the left side and the right side of the inside of the smoke collection cover, contract into the smoke collection cover when not working and extend out of the smoke collection cover when working, so that acting distance of left and right cavity negative pressure areas of the smoke collection cover is expanded, and opportunity that rising oil smoke escapes from two sides of the smoke collection cover is reduced. In addition, the smoke collection cover is generally small in own height, so that after the arc-shaped smoke blocking plates are adopted, the arc-shaped smoke blocking plates can rotate to contract or extend, height of an extending portion can reach or exceed original height of the smoke collection cover, extending distance is relatively long, and better smoke blocking effect is acquired.

Description

technical field [0001] The invention relates to a range hood. Background technique [0002] At present, the overall installation height of the European-style range hood determines that the range hood is relatively far away from the pan that produces the oil fume, and the negative pressure loss is relatively large. In order to improve the range hood effect of the range hood, people have improved the structure of the range hood, and the usual method is to improve the fan system of the range hood, such as increasing the power of the fan, such as improving the structure of the impeller, etc. etc. Although this improvement can effectively improve the range hood's range hood effect, it needs to improve the structure of the entire fan system, which is not only more complicated, but also cannot improve the distribution of the negative pressure area when the range hood is working, and the negative pressure loss It is still relatively large, and the oil fume above the stove is still ...

AI Technical Summary

Problems solved by technology

The deficiencies of the range hood with the above-mentioned smoke baffles mainly include: the movable smoke baffles are all flat plate structures, and because the height of the smoke collecting hood itself is limited, the movable smoke baffles that protrude up and down only have relatively The movable smoke baffle with a small extension height can be hidden in the smoke collecting hood as a whole, and the smoke baffle effect of the movable smoke baffle with a small extension height is relatively poor

For the movable smoke baffle that extends horizontally, although the wider smoke baffle can be retracted and hidden in the smoke collection hood, it cannot make the negative pressure area extend downward, and the smoke baffle effect is relatively poor

In addition, the existing movable smoke baffles are generally installed on the front of the fume collecting hood, which cannot expand the working distance of the negative pressure area of ​​the left and right chambers of the fume collecting hood, and the oil fume can easily escape from both sides

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