Air Cooling Duct Outlet Structure for Accurate Temperature Sensing
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Solution Overview
Problem
Temperature sensors in air cooling units are affected by the amount of blown-out air, leading to inaccurate temperature detection and potential damage to electrical apparatus due to improper operation control.
Innovation Solution
The air cooling unit incorporates projecting portions in the duct outlet to stabilize air flow, ensuring the temperature sensor is not influenced by the amount of blown-out air, thereby allowing precise operation control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the amount of blown-out air is increased to improve cooling efficiency, then the cooling performance is improved, but the temperature sensor detection accuracy deteriorates due to air flow interference
Solution Approach 1:
A flow rate restricting member is introduced as an intermediary element between the air outlet and the temperature sensor. This mediator component restricts and stabilizes the air flow, preventing the high-velocity blown-out air from directly impacting the temperature sensor while still allowing the cooling function to operate effectively.
Solution Approach 2:
The harmful effect of high-velocity air flow on the temperature sensor is separated from the beneficial cooling function. The flow rate restricting member extracts or isolates the problematic air flow characteristics, allowing the temperature sensor to operate in a stabilized environment independent of the main cooling air stream.
2Use of energy by moving object
If the fan operation is controlled based on temperature sensor readings to improve energy efficiency, then the energy consumption is reduced, but the operation control reliability deteriorates due to inaccurate temperature detection
Solution Approach 1:
The flow rate restricting member serves as an intermediary that creates a stable measurement environment for the temperature sensor, decoupling the sensor readings from the variable air flow conditions. This ensures that temperature readings used for fan control decisions are accurate and reliable, maintaining proper operation control while enabling energy-efficient fan management.
3Difficulty of detecting and measuring
If the temperature sensor is placed downstream of the air outlet to improve temperature monitoring, then the monitoring capability is improved, but the measurement accuracy deteriorates due to air flow interference
Solution Approach 1:
The flow rate restricting member is positioned between the air outlet and the temperature sensor, acting as an intermediary that stabilizes the air flow before it reaches the sensor. This allows the temperature sensor to be effectively placed in the downstream monitoring position while the restricting member prevents the harmful high-velocity air from directly impacting the sensor, thus maintaining both monitoring capability and measurement accuracy.
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
Stable air flow around the temperature sensor enables accurate temperature detection, preventing damage to electrical components by ensuring appropriate operation limits are maintained.
Implementation Method 1
the projection portion is provided on the inner surface of the air outlet. The projecting portion disrupts air flow in the duct.
Data Source
AI summary
An air cooling unit disclosed in the present specification includes an electrical apparatus, a duct having an outlet for blowing air along a surface of the electrical apparatus, a temperature sensor disposed in the electrical apparatus, and a controller configured to limit operation of the electrical apparatus when a temperature detected by the temperature sensor exceeds a threshold temperature. The inner surface of the air outlet has thereon a projecting portion. The projecting portion and the temperature sensor are located on a same straight line parallel to an air blowing direction at the air outlet when the projecting portion and the temperature sensor are viewed along a direction perpendicular to the surface of the electrical apparatus.