Dustproof Apparatus Fan Control via Inlet-Outlet Temperature Difference
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Solution Overview
Problem
Existing dustproof apparatuses for image display devices lack effective control mechanisms for fan operation, leading to increased power consumption and noise due to unnecessary fan driving.
Innovation Solution
A dustproof apparatus with a casing, fan, sensor unit, and control unit that measures temperature differences between the inlet and outlet to adjust fan operation based on threshold values and temporal changes, ensuring appropriate control in accordance with the image display device's drive state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the fan mechanism is driven continuously to ensure cooling, then the cooling effect is maintained, but power consumption increases and noise is generated
Solution Approach 1:
The fan mechanism transitions from static continuous operation to dynamic controlled operation. The control unit adjusts fan drive states (drive, stop, or intermediate rotation speeds) based on real-time temperature difference measurements between inlet and outlet air, enabling the system to adapt cooling intensity to actual thermal conditions and avoid unnecessary energy consumption.
Solution Approach 2:
The system implements a feedback control loop where the sensor unit continuously measures the temperature difference between inlet and outlet air, feeds this information to the control unit, which then adjusts the fan drive state accordingly. This closed-loop control ensures the fan operates only when and as much as needed for effective cooling.
2Temperature
If the fan mechanism is driven continuously to ensure cooling, then the cooling effect is maintained, but noise is generated
Solution Approach 1:
The fan mechanism transitions from static continuous operation to dynamic controlled operation. The control unit adjusts fan drive states (drive, stop, or intermediate rotation speeds) based on real-time temperature difference measurements between inlet and outlet air, enabling the system to adapt cooling intensity to actual thermal conditions and avoid unnecessary noise generation.
Solution Approach 2:
The system implements a feedback control loop where the sensor unit continuously measures the temperature difference between inlet and outlet air, feeds this information to the control unit, which then adjusts the fan drive state accordingly. This closed-loop control ensures the fan operates only when and as much as needed, minimizing noise.
3Use of energy by moving object
If the fan mechanism is stopped to save power, then power consumption is reduced, but cooling effectiveness decreases
Solution Approach 1:
The system uses feedback control to determine when stopping the fan is safe. The sensor unit monitors the temperature difference between inlet and outlet air, and the control unit compares this against threshold values to decide whether to stop, start, or maintain fan operation, ensuring cooling effectiveness is maintained when needed while saving power when not needed.
Solution Approach 2:
The system changes the operational parameters of the fan (rotation speed, drive state) based on measured temperature conditions. By adjusting the fan drive state according to the temperature difference parameter, the system optimizes the balance between power consumption and cooling effectiveness.
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
This solution allows for precise control of the fan, reducing power consumption and noise by preventing wasteful fan operation and accurately reflecting the image display device's drive state.
Implementation Method 1
a sensor unit that is capable of respectively measuring a first temperature which is a temperature of the air in a vicinity of the inlet and a second temperature which is a temperature of the air in a vicinity of the outlet
Data Source
AI summary
A dustproof apparatus according to an embodiment of the present technology includes a casing portion, a fan portion, a sensor unit, and a control unit. The casing portion is capable of accommodating an image display apparatus and includes an inlet and an outlet that discharges air sucked in from the inlet. The fan portion is provided at the outlet or the inlet. The sensor unit is capable of respectively measuring a first temperature which is a temperature of the air in a vicinity of the inlet and a second temperature which is a temperature of the air in a vicinity of the outlet. The control unit controls drive of the fan portion on a basis of a temperature difference between the first temperature and the second temperature measured by the sensor unit.