Multifunctional high and low temperature impulse testing box

Abstract

The invention provides a multifunctional high and low temperature impulse testing box which is composed of a heating area, a working area and a refrigerating area. A heating system is arranged in the heating area, a refrigerating system is arranged in the refrigerating area, partition plates are arranged between the areas, the two ends of each partition plate are respectively provided with a ventilating door, and the ventilating doors are respectively connected with a ventilating door control device. The control end of the heating system, the control end of the refrigerating system and the control ends of the ventilating door control devices are connected to a PLC. The multifunctional high and low temperature impulse testing box is characterized in that the PLC is internally provided with a heat and cold impulse testing control system and a high / low temperature alternating testing control system, and the PLC is connected with a work pattern switching circuit. The multifunctional high and low temperature impulse testing box has the advantages that both a cold and heat impulse test and a high / low temperature alternating test can be carried out through the testing box, a box body is simple in structure, the equipment functions are complete, the energy consumption is low, the adjusting time is short, and the service life of the testing box is long.

Description

technical field [0001] The invention belongs to the control technology of an environmental test device, in particular to a multifunctional high and low temperature impact test box. Background technique [0002] In aviation, aerospace, military industry, electronics, IT and other industries, environmental test simulators are used more and more widely. It is mainly used in the adaptability test of simulated products such as aviation, aerospace, electronics, IT industry, instrumentation, electrical products, etc. under the condition of rapid changes in ambient atmospheric temperature and the safety test of electronic components to provide reliability tests and product screening. Wait. [0003] The existing various environmental test simulation devices mainly include high and low temperature test chambers, temperature shock test chambers, damp heat test chambers and salt spray test chambers and so on. For the existing high and low temperature test chambers and temperature shoc...

AI Technical Summary

Problems solved by technology

For the existing high and low temperature test chambers and temperature shock test chambers, although the temperature of the working area is adjusted through the adjustment of cold and heat resistance, the function of the test chamber is relatively single, either only for high and low temperature tests, or only Doing temperature shock test, relatively speaking, increases equipment cost and test cost

Moreover, the existing temperature adjustment control system is set relatively rough, which not only takes a long time for debugging, but also increases the difficulty and unreliability of the operation, and the long-term heavy load operation of the equipment causes the accessories to deteriorate rapidly, which affects its service life. Due to the high energy consumption, its steam A large amount of emissions to the surrounding environment conflicts with the environmental concept of advocating energy conservation and emission reduction, making this type of test equipment unable to meet the needs of mass consumption and energy conservation and environmental protection

[0004] The disadvantages of the existing technology are: the function of the environmental test simulation device is single, the equipment cost and test cost are relatively high, in the temperature control technology, the energy consumption of dynamic balance adjustment is large, the adjustment time is long, and the operation difficulty and unreliability are increased. Moreover, the long-term heavy load operation of the equipment causes the rapid deterioration of the accessories and affects its service life

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