Stepless Fan Speed Control Using a Rotary Adjusting Member
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Solution Overview
Problem
Existing fans lack the ability to freely adjust wind speed, limiting user experience.
Innovation Solution
A fan equipped with a stepless adjusting member, such as a potentiometer or rotary encoder switch, allows for continuous adjustment of wind speed through a circuit board controlling the motor's power output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If buttons are used to adjust wind speeds in existing fans, then the structure is simple and easy to manufacture, but the wind speed cannot be adjusted freely which affects user experience
Solution Approach 1:
The patent replaces the traditional mechanical button adjustment system with an electronic control system. The operating element generates signals that are processed by the control board, which then adjusts the motor's power output electronically. This substitution enables continuous wind speed adjustment while maintaining structural simplicity through integrated electronic components.
Solution Approach 2:
The patent introduces a dynamic control mechanism where the operating element can be rotated to different positions, and the control board dynamically adjusts the motor's power output based on the rotation position. This dynamic adjustment capability allows free wind speed variation from low to high, transforming the static discrete speed levels into continuous adjustable ranges.
2Adaptability or versatility
If discrete wind speed grades are provided, then the control structure is simple, but the wind speed cannot be adjusted to match user needs
Solution Approach 1:
The patent changes the control parameter from discrete button selections to continuous rotation position detection. The operating element's rotation angle becomes the control parameter, allowing the system to adapt to any wind speed requirement within the operational range. The control board translates the continuous rotation parameter into corresponding motor power output levels.
Solution Approach 2:
The patent creates a universal control system where the operating element can provide multiple functions: it serves as both the user interface for wind speed adjustment and the signal source for the control board. This multi-functional design enhances adaptability without proportionally increasing system complexity, as the same component performs multiple roles in the control chain.
Data Source
AI summary
The present disclosure provides a fan. The fan includes a fan main body, a circuit board, and an operating element. The circuit board is provided with a stepless adjusting member. The operating element is connected to the stepless adjusting member. The fan main body includes a first motor electrically connected to the circuit board and a fan blade connected to the first motor. The circuit board adjusts power output to the first motor when the operating element rotates and operates the stepless adjusting member. So as to adjust a rotating speed of the first motor. In this way, the user can adjust a desired wind speed of the fan blade according to a need, which solves the problem that the wind speed of the existing fan cannot be freely adjusted and improves the operating performance and the user experience.