Condensation Test Chamber Control With Dew-Point Feedback
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Solution Overview
Problem
Existing environment testing apparatuses face challenges in achieving stable and precise control of condensation amounts on test objects, with variations in condensation status and difficulty in maintaining a set condensation level due to limitations in temperature and humidity control.
Innovation Solution
The apparatus employs a cooling/heating unit with a controllable temperature range set between the deviation-added values of wet bulb and dew-point temperatures, controlled by a condensation amount sensor to maintain a stable condensation status with minimal variation, using a wet bulb and dry bulb for humidity and temperature measurement, and an air-conditioner to condition the test chamber.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If the seat temperature is maintained constant near the dew-point temperature, then the condensation status can be maintained for a long time, but it is difficult to obtain accurate condensation status and fine control of condensation amount
Solution Approach 1:
The patent introduces a condensation amount sensor that provides real-time feedback on the condensation status of the test piece. The controller receives this feedback signal and adjusts the seat temperature dynamically based on the actual condensation amount, enabling closed-loop control. This resolves the contradiction by allowing both long-term maintenance of condensation status and accurate measurement/control of condensation amount through continuous monitoring and adjustment.
Solution Approach 2:
The patent transitions from static temperature maintenance to dynamic temperature control. The seat temperature is no longer held constant but is dynamically adjusted based on real-time condensation amount measurements. The controller modifies the temperature instruction value within a controllable temperature range according to feedback signals, enabling both sustained condensation and precise control.
2Speed
If the cooler control utilizes maximum cooling capability, then the response of condensation amount towards set condensation amount is favorable, but the condensation amount does not converge stably at the set value
Solution Approach 1:
The patent implements dynamic temperature control where the seat temperature is adjusted within a controllable temperature range based on real-time condensation amount feedback. Instead of applying maximum cooling continuously, the system dynamically modulates the cooling intensity to match the actual condensation status, enabling both rapid response and stable convergence at the set condensation amount.
Solution Approach 2:
The patent changes the temperature parameter dynamically within a specified range rather than maintaining a fixed temperature or applying maximum cooling. The controller adjusts the temperature instruction value based on the difference between actual and target condensation amounts, enabling the system to respond quickly when far from target and stabilize when approaching the set value.
3Adaptability or versatility
If constant temperature control near dew-point is used, then rough control of condensation amount is achieved, but fine control and small variation in condensation amount cannot be achieved
Solution Approach 1:
The patent employs a condensation amount sensor that provides continuous feedback on the actual condensation status. The controller uses this feedback to make precise adjustments to the seat temperature, enabling fine control of condensation amount. This closed-loop control system achieves both the adaptability of rough control and the precision of fine control by continuously monitoring and adjusting based on actual conditions.
Solution Approach 2:
The system transitions from static constant temperature control to dynamic temperature adjustment within a controllable range. The seat temperature is continuously modified based on real-time condensation amount measurements, enabling the system to adapt to changing conditions and achieve precise control of condensation amount with minimal variation.
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 approach allows for precise control of condensation amounts on the test object surface, reducing variations and ensuring a stable condensation status despite fluctuations in temperature and humidity, thereby enhancing the reliability of condensation tests.
Implementation Method 1
a wet bulb and a dry bulb disposed inside the test chamber, which obtain the temperature and the humidity of the air inside the test chamber
Implementation Method 2
a wet bulb and a dry bulb disposed inside the test chamber, which obtain the temperature and the humidity of the air inside the test chamber
Implementation Method 3
an air-conditioner which conditions the air inside the test chamber to predetermined temperature and humidity
Implementation Method 4
an air-conditioner which conditions the air inside the test chamber to predetermined temperature and humidity
Implementation Method 5
a cooling/heating unit accommodated inside the test chamber, which has a top surface for disposing thereon the test object and cools or heats the test object
Implementation Method 6
controls the condensation amount on the surface of the test object
Data Source
AI summary
An object of the present invention is to provide an environment testing apparatus capable of achieving, on the surface of a test object, a stable condensation status with less variation in the condensation amount than that of already existing-art. The environment testing apparatus 100 includes a regulator 4. On the basis of a signal from a condensation amount sensor 9, the regulator 4 controls the temperature of a cooling/heating plate 6 between a deviation-added value of the wet bulb temperature obtained from the wet bulb 11, and a deviation-added value of the dew-point temperature inside the test chamber 1.