Air outlet device for range hoods

Abstract

The invention discloses an air outlet device for range hoods. The air outlet device comprises a cover body and a valve block component which is arranged at an air outlet of the cover body, wherein the valve block component comprises a rotation shaft which is arranged along the symmetry axis of the air outlet and two symmetric valve blocks which are hinged on the rotation shaft; the total area of the two valve blocks is matched with the air outlet; and the valve blocks are capable of rotating around the rotation shaft to open or close the air outlet. The air outlet device for range hoods is characterized in that a control device which is used for controlling the two valve blocks to be automatically opened and closed is arranged below the valve block component. The air outlet device is not only capable of automatically controlling the opening and the closing of the valve clocks to ensure the smooth opening and the tight closing of the valve blocks, ensure the unobstructed air exhaust during the use of the range hoods and prevent the backflow of lampblack when the range hoods are closed, but also capable of ensuring the synchronous opening and closing of the two valve blocks to ensure the unobstructed air exhaust of the range hoods and reduce the noise of the range hoods.

Description

technical field [0001] The invention relates to an air outlet device of a range hood. Background technique [0002] The buildings used in today's family living are generally public flues. The oil fumes discharged from the range hoods of each household enter the public flue from the range hoods and are discharged from the top of the house. If the air outlet of the range hoods is not tightly sealed , it will cause the fumes from the lower-level users to enter the rooms of the upper-level residents during the discharge process, or when the wind blows or the air pressure is low, the oily fumes discharged from the upper-level residents will also enter the house from the exhaust port of the range hood of the lower-level residents. In this case, there will be a phenomenon of gas and smoke between the airways. Therefore, the general range hood is equipped with an air outlet cover at the air outlet of the range hood, and a valve plate is arranged in the air outlet cover. The valve p...

AI Technical Summary

Problems solved by technology

However, the cost of the electromagnet in this structure is high and the structure is complicated. The electromagnetic device is easily damaged in the oily environment. If the valve piece with a smaller degree of shell bonding is opened first, the gas pressure in the air outlet hood will be greatly reduced instantly, and the other valve piece will be difficult to open again. Although this technology adds a structure to assist in opening the valve piece, the two If the valves are not opened synchronously, there is still a hidden danger that one of the valves cannot be opened.

Moreover, the opening and closing of the valve plate in the air outlet hood also needs to rely on the effect of the wind force in the air outlet hood, which increases the uncontrollable factors and makes it impossible to artificially control the opening and closing of the air outlet hood

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