Flue electric check valve

Abstract

The invention discloses a flue electric check valve. The external of the flue electric check valve is a spherical or cylindrical check valve element; a motor and an electric control board are arrangedat the top of the check valve element; and the electric control board is provided with an alternating-current transformer and a single-chip microcomputer. A spherical air door is mounted in an innercavity of the check valve element, is a spherical body with a through hole in middle, and is assembled in an inner cavity of the check valve element by upper and lower positioning rotating shafts. Thealternating-current transformer is connected with the single-chip microcomputer; a control wire of the single-chip microcomputer is connected to the motor; and a rotating shaft of the motor is linkedwith the upper positioning rotating shaft of the spherical air door, and drives rotation of the spherical air door. The alternating-current transformer is used for detecting if a fan of a range hoodis operated, and the single-chip microcomputer is used for controlling the motor to open or close the spherical air door so as to achieve full-automatic intelligent operation. The flue electric checkvalve can effectively prevent such smell as lampblack from flowing indoors from a public flue, can smoothly discharge waste gas without barriers, thoroughly prevents the smell returning and shifting phenomenon of the kitchen public flue, and has the characteristics of intelligent control, safety, reliability and convenience to install.

Description

technical field [0001] The invention relates to a supporting product between a kitchen public flue of a civil building and a range hood, in particular to an anti-reverse device on the flue which is used to dump smoke and prevent return air. Background technique [0002] With the improvement of people's living standards, range hoods have been widely used, but due to various reasons, the phenomenon of off-flavors and odors in public kitchen flues is very common, seriously affecting the quality of life of residents. People have come up with a lot of methods to solve the problem that prevents the public flue from falling down and odors, such as carrying out the anti-falling design (mother and son flue) to the flue in building construction, and carrying out the anti-reverse design etc. at the flue mouth again. However, some of the schemes designed so far are too complicated, which increases the construction cost of the house, and some of them have no obvious anti-reverse effect. ...

AI Technical Summary

Problems solved by technology

[0003] In view of the above problems existing in the flue, the purpose of the present invention is to provide a product that can be used to discharge smoke between the public flue and the range hood in the kitchen of civil buildings, prevent odors, prevent damper blades from sticking, and smoke smoothly. , in order to completely eradicate the phenomenon of off-flavors and odors in public kitchen flues

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