Flue check valve and flue system with same

Abstract

The invention discloses a flue check valve and a flue system with the same. The flue check valve comprises a valve body, a non-return structure and a distributing fin, wherein the valve body is provided with a smoke channel and the smoke channel is provided with a smoke inlet and a smoke outlet; the non-return structure is arranged on the valve body and only allows fluid inside the smoke channel to circulate in one way from the smoke inlet to the smoke outlet; and the distributing fin is rotationally installed on the valve body so as to adjust the flowing-out angle of the fluid from the smokeoutlet. According to the flue check valve of the embodiment of the invention, the backward flowing prevention and fireproof functions are achieved, the smoke discharge angle is adjusted according to the smoke discharge piezoresistance distribution of floors, and accordingly mutual influence on smoke discharge at different floors is reduced, and the smoke discharge efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of smoke exhaust, in particular to a flue check valve and a flue system having the flue check valve. Background technique [0002] The public vertical smoke exhaust system is a commonly used ventilation and exhaust method in residential kitchens. The cooking fumes generated by residents are discharged to the public flue through range hoods. [0003] Specific as figure 1 In the flue system 1' shown, the range hood 10' in the kitchen communicates with the public flue 40' through the indoor smoke exhaust channel 20'. A flue check valve 30' is arranged between ', and the flue check valve 30' has a check structure. When the range hood 10' is working, the air with oil fume passes through the indoor smoke exhaust channel 20' to push away the non-return structure, and the oil fume is discharged to the public flue 40'; when the range hood 10' stops working, the non-return structure Rely on the self-resetting seal ...

AI Technical Summary

Problems solved by technology

[0004] However, if figure 1 As shown, when the range hood 10' is working, the non-return structure of the flue check valve 30' is opened, and the oil fume is discharged to the public flue 40'. Since the oil fume is a fluid, it diffuses to the surroundings in an unconstrained state, for example , part of the oil fume will flow to the bottom of the public flue 40', which increases the smoke exhaust resistance of the upper floor users to the lower floor users, resulting in uneven distribution of smoke exhaust resistance on different floors and affecting the smoke exhaust efficiency

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