Constant-pressure control system and control method for multi-split fan

Abstract

The invention relates to the technical field of fans, and discloses a constant-pressure control system and control method for a multi-split fan. The control system comprises a central control system, a main control cabinet, a plurality of fans and a pressure sensor, wherein the central control system is used for calculating or setting a preset wind pressure value; the main control cabinet comprises a controller and a switch, and the central control system and the controller are connected to the switch; the plurality of fans are all connected with the switch; and the pressure sensor is arranged in an output header pipe of the plurality of fans, the pressure sensor is connected with the main control cabinet, and the pressure sensor is used for measuring the actual air pressure value of the output header pipe. By means of the structure, the constant-pressure control system for the multi-split fan does not need to occupy more interfaces, wiring is simple, and the cost, difficulty and workload of system integration can be favorably reduced.

Description

technical field [0001] The invention relates to the technical field of fans, in particular to a constant pressure control system and a control method for a multi-connected fan. Background technique [0002] In the prior art, in the constant pressure control of multiple magnetic levitation blowers online, each blower needs to be connected to the central control system individually, which not only complicated the wiring, but also needed to occupy a lot of interfaces in the central control system, and made the central control system. The control program is complicated. Moreover, in the existing multi-connection constant pressure control, the operator's work experience is mostly used to control how many blowers are turned on and how many speed to adjust, which makes the deviation of the adjustment process larger and consumes more energy. SUMMARY OF THE INVENTION [0003] One object of the present invention is to provide a multi-connected fan constant pressure control system, ...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, in the online constant pressure control of multiple maglev blowers, each blower needs to be connected to the central control system separately, which not only complicates the wiring, but also requires more interfaces of the central control system, and makes the central control system Complex control program

Moreover, in the existing multi-line constant pressure control, it relies more on the working experience of the operator to control how many blowers to turn on and how much to adjust the speed, which makes the deviation of the adjustment process larger and consumes more energy.

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