Check valve for smoke exhaust of kitchen of high-rise residence

Abstract

The invention discloses a check valve for smoke exhaust of a kitchen of a high-rise residence. A first shell, a fan blade fixing shaft and expansion bolts are included, a cylindrical hole is formed in the center of the front face of the first shell and penetrates through the back face of the first shell, and fan blade fixing frames are arranged at the two ends of the cylindrical hole. The fan blade fixing shaft sequentially penetrates through the fan blade fixing frame, a metal circular ring, fan blades, a gear, a metal circular ring and the fan blade fixing frame, the front face of the first shell is fixedly connected with a first annular body, a rubber outer sleeve is arranged on the outer surface of the first annular body, and the back face of the first shell is fixedly connected with a second annular body. The fan blades and a motor are arranged so that a range hood can be assisted to extract oil smoke in use, the air pressure of an air outlet can be increased when the air pressure of a high-rise smoke exhaust pipeline is large and a baffle cannot be opened or an opening is small, the oil smoke is smoothly exhausted into the pipeline, and the smoke exhaust effect is improved.

Description

technical field [0001] The invention relates to the technical field of kitchen smoke exhaust, in particular to a check valve for smoke exhaust in high-rise residential kitchens. Background technique [0002] The check valve of the range hood is also called the air outlet, the exhaust port and the air outlet cover. The bottom is fixed on the top of the range hood with screws, and the upper part is connected to a plastic telescopic pipe. There are generally two baffles inside the range hood check valve. , but because the check valve of the traditional hood has the problem of the baffle being not tightly sealed (no matter how high-end the hood is), this will cause the trouble of returning to the smell of the range hood. [0003] The kitchen smoke check valve on low floors generally only needs baffles, but the wind pressure of the smoke exhaust pipes on high floors is much higher than that on low floors. However, the baffle plate cannot be opened or the opening is small, which ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problem in the prior art that the baffle cannot be opened or the opening is small due to the high wind pressure, which affects the smoke exhaust effect, and provides a check valve for smoke exhaust in high-rise residential kitchens , the check valve for smoke exhaust in high-rise residential kitchens has the effect of assisting smoke exhaust when the baffle cannot be opened or the opening is small due to high wind pressure

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