Anti-downdraft pipe

Abstract

An anti-downdraft smoke pipe, comprising a smoke pipe body, a housing, a ratchet, a wind pendulum, a rotating shaft, a driven fan, a driving top and a driven top, the casing is arranged at the front end of the smoke pipe body and the The front port is covered; the ratchet wheel is rotatably arranged in the casing, the outer ring of the ratchet wheel has ratchet teeth and the inner side is formed with a ring gear; The active top that drives the ratchet to rotate, the front end of the rotating shaft is provided with an acceleration gear that meshes with the aforementioned ring gear; the driven top cooperates with the aforementioned ratchet to limit the reverse rotation of the ratchet; the side wall of the smoke pipe body is provided with a smoke exhaust hole, The smoke exhaust hole can receive the smoke gas discharged radially from the wind wheel. After the wind pendulum receives the wind, the power is transmitted to the ratchet through the cooperation of the active top and the driven top. The ratchet rotates in one direction and transmits the force to the driven fan through the acceleration gear. The driven fan discharges the smoke through the smoke exhaust hole to achieve wind pressure resistance. And anti-wind purposes.

Description

technical field [0001] The invention relates to a smoke exhaust pipe, in particular to a smoke exhaust pipe applied to gas water heaters, dual-purpose furnaces or range hoods. Background technique [0002] In the process of daily use of products such as water heaters or range hoods, once encountering strong winds, the exhaust of smoke will be greatly affected, and the water heater may even be turned off due to this, which will seriously affect the use and safety of users. Specifically, the following problems will occur : [0003] 1. When the wind pressure is too high, the flue gas cannot be discharged normally, which affects the combustion of gas and reduces the efficiency. [0004] 2. If the wind blows backwards into the water heater, it will lead to dangerous situations such as flashback, flameout, and CO exceeding the standard. [0005] In terms of anti-backwind, many efforts and attempts have been made in the prior art, as shown in the Chinese utility model patent "a d...

AI Technical Summary

Problems solved by technology

[0003] 1. When the wind pressure is too high, the flue gas cannot be discharged normally, which will affect the combustion of gas and reduce the efficiency

[0004] 2. The wind blows back into the water heater, which will lead to backfire, flameout, CO exceeding the standard and other dangerous situations

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