Constant temperature and constant-humidity test box

A constant temperature and humidity test and test cabin technology, applied in the field of constant temperature and humidity test chambers, can solve the problems of inability to stabilize air pressure, high dependence on air pressure sensors, and inability to test

Active Publication Date: 2021-04-30
广东艾斯瑞仪器科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are currently testing requirements for constant temperature, humidity, and pressure. The existing constant temperature, humidity, and pressure test chambers rely on the PID closed-loop control system. After the sensor detects the air pressure in the target space, it feeds back to th

Method used

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  • Constant temperature and constant-humidity test box
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  • Constant temperature and constant-humidity test box

Examples

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Embodiment Construction

[0021] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0022] Such as Figure 1-3 As shown, the constant temperature and humidity test box of the present invention includes a heat insulation box 1 and a water tank, and the heat insulation box 1 is provided with a transparent observation window 2, and also includes a barrel-shaped test chamber 4 and a base 5 placed in a vertical direction. , a heating device, a refrigeration device, a humidifying device 7 and a counterweight piston 8, the base 5 is provided with a bracket for installing the sample; the counterweight piston 8 is freely slidable under the action of gravity and is arranged on the upper end of the barrel-shaped test chamber 4, The air pressure in the test chamber 4 is kept constant; the test chamber 4 is provided with a test space 0, and the test space 0 is located between the counterweight piston 8 and the base 5; the humidifying device 7 is used to add humi...

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Abstract

The invention relates to the technical field of test devices, in particular to a constant-temperature and constant-humidity test box. The constant-temperature and constant-humidity test box comprises a barrel-shaped test chamber arranged in a vertical direction, a base, a heating device, a refrigerating device, a humidifying device and a balance weight piston, and the base is provided with a support used for installing a sample; a test space is formed in the test cabin and is positioned between the counterweight piston and the base; the humidifying device is used for adding wet air into the test space, the humidifying device comprises an atomizing device and a compressor, the atomizing device atomizes water in the water tank to generate water vapor, and the compressor presses the water vapor into the test space; and the test box further comprises a circulating fan, a honeycomb rotating wheel, a temperature sensor, a humidity sensor and a controller. According to the constant-temperature and constant-humidity test box, after water vapor is condensed and liquefied, due to the fact that the balance weight piston can freely slide under the action of gravity, the air pressure in the test chamber is kept constant, and the air pressure in the test chamber can be kept stable without an air pressure sensor.

Description

technical field [0001] The invention relates to the technical field of testing devices, in particular to a constant temperature and humidity test chamber. Background technique [0002] The constant temperature and humidity test chamber is a kind of equipment that tests the performance of the product under a certain constant temperature and humidity state to test whether the performance of the product meets the requirements of the relevant standards. [0003] During the test, in order to achieve the preset temperature and humidity, the constant temperature and humidity test chamber needs to be equipped with corresponding temperature adjustment devices and humidity adjustment devices to adjust the temperature and humidity. However, there are currently testing requirements for constant temperature, humidity, and pressure. The existing constant temperature, humidity, and pressure test chambers rely on the PID closed-loop control system. After the sensor detects the air pressure ...

Claims

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Application Information

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IPC IPC(8): B01L7/00B01L1/00
CPCB01L7/00B01L1/00
Inventor 管飞徕池飞娟李衡
Owner 广东艾斯瑞仪器科技有限公司
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