Method for controlling air conditioner fan to be started in forward and reverse directions
By detecting the forward and reverse wind conditions and speed of the air-conditioning fan and adopting different startup control methods, the problems of fan startup failure and hardware damage are solved, and reliability and cost-effectiveness are improved.
CN120627368APending Publication Date: 2025-09-12SICHUAN AOKU TECH CO LTD
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Patent Information
- Application Number
- CN202510860136.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-25
- Publication Date
- 2025-09-12
AI Technical Summary
Technical Problem
The air conditioner fan may fail to start due to the action of natural wind during startup, and there is a risk of hardware damage such as motor overload and driver burning.
Method used
By detecting the wind and headwind status and speed of the fan, using the back electromotive force to determine the wind and headwind speed of the fan, and adopting different starting control methods, including positioning, open-loop drag and closed-loop operation, the reliability of fan starting is improved.
Benefits of technology
The reliability of fan startup is improved, hardware cost and structural complexity are reduced, and anti-interference ability and angle tracking real-time performance are enhanced.
✦ Generated by Eureka AI based on patent content.
Abstract
The control method comprises the following steps that A, an angle relation is extracted from counter electromotive force, the actual position of a rotor and the current rotating speed of the fan are obtained through phase-locked loop calculation, and the forward and reverse wind state of the fan is judged according to the positive or negative value of the current rotating speed value of the fan; and B, the starting mode of the air conditioner fan is controlled according to the clockwise and counterclockwise wind of the fan, the current rotating speed of the fan and the actual position of the rotor judged in the step A. Different starting control modes are selected by detecting the current forward and reverse wind states and the rotating speed of the draught fan, and the starting reliability of the draught fan is improved. Compared with forward and reverse wind judgment of a fan provided with a sensor, the hardware cost is reduced, and the structure is simplified; compared with some open-loop algorithms, the angle is calculated through closed-loop control of the phase-locked loop, and the anti-interference capability and the angle following real-time performance are better.
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