Fan control apparatus and fan control method
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Solution Overview
Problem
Existing fan control systems require a complex configuration with multiple fans and sensors to maintain uniform atmospheric pressure, temperature, and humidity across adjacent rooms, which is not efficient.
Innovation Solution
A fan control apparatus comprising a first sensor in one room, a second sensor in an adjacent room, and an RF fan placed between them, with a controller that adjusts the rotational speed and direction of the RF fan to equalize the measured conditions between the two rooms, allowing for simpler control of pressure, temperature, and humidity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple fans and sensors are used to maintain uniform atmospheric conditions across adjacent rooms, then the control reliability is improved, but the device complexity increases
Solution Approach 1:
The single fan is configured to operate in multiple modes (forward rotation for exhaust, reverse rotation for intake) to replace multiple fans. The controller manages different operational states (exhaust mode, intake mode, stop mode) of the same fan based on pressure differential requirements, achieving multi-functionality with a single device
Solution Approach 2:
The fan acts as an intermediary device that responds to pressure differential signals from sensors to regulate airflow between rooms. The controller serves as an intermediary that processes sensor data and translates it into fan control commands, coordinating the interaction between sensing and actuation components
2Manufacturing precision
If multiple fans are deployed between adjacent rooms, then the atmospheric pressure uniformity is improved, but the ease of operation deteriorates
Solution Approach 1:
The system automatically monitors pressure differentials using sensors and adjusts fan operation accordingly without manual intervention. The controller continuously compares pressure readings and autonomously switches the fan between exhaust mode, intake mode, and stop mode to maintain pressure equilibrium
Solution Approach 2:
Instead of using multiple fans operating in fixed directions, the system uses a single fan that reverses its rotation direction based on control signals. The fan operates in forward rotation for exhaust, reverse rotation for intake, and stop for pressure equilibrium, inverting the conventional approach of multiple fixed fans
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables efficient and automatic control of atmospheric pressure, temperature, and humidity across adjacent rooms using a simpler configuration, with the RF fan acting as both an inlet and outlet fan to maintain equal conditions.
Implementation Method 1
the controller is configured to control a rotational speed and rotational direction of the RF fan in such a manner that the measured values of the first and second sensors are the same
Data Source
AI summary
Provided is a fan control apparatus which includes: a first sensor; a second sensor; an RF fan; and a controller. The first sensor is provided in a first room, and is configured to acquire a measured value of at least one condition selected from conditions of atmospheric pressure, temperature, and humidity for the first room, the second sensor is provided in a second room adjacent to the first room, and is configured to acquire a measured value of the same condition as the at least one selected condition for the second room, the RF fan is placed at a boundary between the first and second rooms, and the controller is configured to control a rotational speed and rotational direction of the RF fan in such a manner that the measured values of the first and second sensors are the same.