Central flue system and sealing state detection method thereof

Abstract

A central flue system comprises range hoods mounted on different floors; an air outlet of each range hood communicates with a public flue through a respective smoke pipe; a valve body is arranged in each smoke pipe. The central flue system is characterized in that a flue fan is arranged in the public flue; flow velocity detection modules used for detecting the flow velocity of pipelines where thecorresponding valve bodies are located are arranged on the smoke pipes; the central flue system also comprises indoor unit controllers for controlling the valve bodies to be opened and closed and a host controller for controlling the rotating speed or frequency of the flue fan; moreover, flow velocity data output by the flow velocity detection modules can be transmitted to the host controller through the indoor unit controllers. The invention further discloses a sealing state detection method of the central flue system. The central flue system has the advantages that the central flue system iscombined with valve body sealing detection to detect the sealing condition of the flue and the valve bodies, the detection method is simple and reliable, possible valve block defects or flue cracks can be found in advance, and a good installation basis is provided for actual use of a user.

Description

Technical field [0001] The invention relates to a central flue system, in particular to a central flue system and a sealing state detection method thereof. Background technique [0002] At present, the floors of newly-built buildings in cities are generally getting higher and higher. Since the exit of high-rise public flue is generally set at the top of the floor, the switch status of the range hood of each user will affect the resistance of the system outlet, making the bottom user's smoke exhaust situation bad . However, the cross-sectional area of ​​the public flue is generally pre-defined by the building design code and cannot be replaced. If the area of ​​the flue cannot be increased, if the air volume is increased blindly, the flue will be blocked and the entire flue will be increased. The flow rate and noise of the system. [0003] In addition, the user-side adjustable angle valve combined with the roof flue outlet main fan for centralized filtration and emission has been ...

AI Technical Summary

Problems solved by technology

If there is partial leakage in the flue or the seal of the adjustable check valve is not tight, it will cause pressure relief in the flue and affect the smoke exhaust of users at the bottom. Therefore, the sealing of the flue and the valve body has a great impact on the smoke exhaust of users at low floors.

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