Maintenance prompting method of central flue purification system

Abstract

The invention discloses a maintenance prompting method of a central flue purification system. The central flue purification system comprises range hoods installed on different floors, wherein each range hood comprises a fan; an air outlet of each range hood communicates with a public flue through a smoke pipe of the range hood; an adjustable check valve and a flow velocity detection module are installed on each smoke pipe; and a centralized filter is installed in the public flue. The maintenance prompting method is characterized by comprising a filter maintenance detection method and a fan impeller maintenance detection method which are mutually independent. According to the maintenance prompting method of the central flue purification system, the before-and-after flow velocities of the pipes detected by the flow velocity detection modules are compared to determine whether the centralized filter in the flue needs maintenance or not; and in addition, for an indoor machine impeller installed on each floor, the change of the rotational inertia of the impeller is judged by utilizing the time difference of the rotational speed or acceleration of the impeller on each floor, so that whether the weight increase caused by the greasy dirt exists or not and whether the indoor machine impeller needs maintenance or not are further determined.

Description

technical field [0001] The invention relates to a central purification system, in particular to a maintenance reminder method for the central flue purification system. Background technique [0002] In recent years, the user-side adjustable angle valve combined with the centralized filtration and discharge of the main fan at the flue outlet on the roof has begun to be used in some well-decorated buildings. The main fan on the roof, that is, the central range hood, performs frequency conversion + valve preset for users with different operating rates. The flow distribution is achieved at an angle, which can solve the poor smoke exhaust situation of the bottom user to a certain extent, and at the same time effectively control the flow rate and noise of the entire flue system. In addition, in order to purify the oil fume entering the public flue, a centralized flue filter is generally installed in the public flue. Effective purification. After the flue system has been used for ...

AI Technical Summary

Problems solved by technology

After the flue system has been used for a long time, the centralized filter of the flue will be clogged and its performance will be reduced, which will lead to an increase in system resistance and seriously affect the user's smoke exhaust, so it needs to be replaced in time

At present, people generally judge whether the centralized filter needs to be cleaned or replaced according to the service life or experience, but this maintenance method often cannot truly reflect the use of the centralized filter, and the filter may be replaced too early or too late

In addition, after the central flue system works for a long time, the air volume of the flue motor will decrease at the same speed, and the power will also change greatly, and the accumulation of impeller oil will make the start-up time longer. The impeller of the road main fan is maintained. Similarly, the existing flue system cannot provide intelligent reminders for the maintenance of the impeller, and it is prone to inappropriate maintenance timing.

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