Humidity Control in Low Pressure Temperature Test Box
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Solution Overview
Problem
Conventional low pressure and high-low temperature test boxes fail to account for humidity, an essential factor affecting material or device properties, limiting detection accuracy.
Innovation Solution
A low pressure and high-low temperature test box equipped with a humidity control system, including a heater, evaporator, temperature-humidity sensor, vacuum manometer, air circulation device, and humidity regulating device, which allows simultaneous control of temperature, humidity, and pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a conventional test box is used for low pressure and high-low temperature testing, then temperature and pressure detection is achieved, but humidity control and detection capability is lacking
Solution Approach 1:
The test box is transformed from a single-function device (temperature and pressure testing only) to a multi-function device that simultaneously controls and detects temperature, pressure, and humidity. This is achieved by integrating a humidity regulating device with a water tank, water-gas control valve, and humidifying airflow passage into the existing test box structure, enabling it to perform multiple environmental control functions.
Solution Approach 2:
The humidity control system is divided into separate functional components: a water tank for water storage, a water-gas control valve for water vapor generation, and a humidifying airflow passage for humidity distribution. This segmentation allows independent optimization of each component while maintaining overall system functionality.
2Adaptability or versatility
If humidity control components are added to the test box, then humidity detection and control capability is improved, but device complexity increases
Solution Approach 1:
The humidity control components (water tank, water-gas control valve, humidifying airflow passage) are merged with the existing test box structure rather than being added as completely separate systems. The water tank is positioned within the test box, and the humidifying airflow passage integrates with the existing air circulation system, reducing overall system complexity.
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 precise detection and regulation of humidity, improving the accuracy of material or device property assessments under varying conditions.
Implementation Method 1
a first heater (2) and a first evaporator (3) installed inside the test box body (1)
Implementation Method 2
a first evaporator (3) installed inside the test box body (1)
Implementation Method 3
the test box body is further provided with a vacuum pump (8) used for vacuuming the inside thereof
Implementation Method 4
a temperature-humidity sensor (4) installed on the test box body (1) used for detecting the temperature/humidity therein
Implementation Method 5
a vacuum manometer (5) used for detecting the pressure inside the test box body (1)
Implementation Method 6
an air circulation device (6) used for circulating the air inside the test box body (1)
Data Source
AI summary
A low pressure and high-low temperature test box capable of controlling humidity comprises a test box body (1), a first heater (2) and a first evaporator (3) which are installed in the test box body (1), a humiture sensor (4) for detecting the humiture inside the test box body (1) and a vacuum manometer (5) for detecting the pressure inside the test box body (1) which are both installed on the test box body (1), an air circulation device (6) for circulating the air inside the test box body (1), and a humidity adjusting device (7) which is connected to the test box body (1) and used for adjusting the humidity inside the test box body (1). A vacuum pump (8) for vacuumizing the test box body (1) is also provided on the test box body (1).