Frostless high and low temperature testing machine

Abstract

The invention relates to a frostless high and low temperature testing machine which comprises a box body, a testing cabin arranged in the box body, a first cavity connected with the testing cabin, a refrigerating device and a control system. The testing cabin is communicated with the first cavity through an air inlet and an air outlet, and the frostless high and low temperature testing machine further comprises a drying device, a heating device and a circulating fan. The observation window is provided with at least one operation port. According to the frostless high and low temperature testing machine, the testing temperature range is -82 DEG C to 180 DEG C, the testing range is wide, long-time operation can be kept at the low temperature, through the adoption of the box body structure and the drying device, even if the temperature is as low as -82 DEG C and the observation window is large in size, it can still be ensured that the testing chamber and the observation window cannot be frosted, and the aging test requirements on products in the high-precision industrial field are met.

Description

technical field [0001] The invention relates to the technical field of aging test instruments, in particular to a frost-free high and low temperature test machine. Background technique [0002] With the improvement of product quality requirements in the industry developed in recent years, such as data transmission and reception in the 5G industry and equipment connected to the 5G network, reliability needs to be verified in a wider temperature range, and high and low temperature testing machines are common in product investment. The equipment for the simulation test of the product before the market is mainly used to test the changes of the product under extremely high temperature, extremely low temperature and normal temperature, and to simulate the real situation of the product used under the corresponding ambient temperature. The existing high and low temperature testing machine has a serious frosting problem, which affects the quality of the test. On the other hand, the t...

AI Technical Summary

Problems solved by technology

The existing high and low temperature testing machine has a serious frosting problem, which affects the quality of the test. On the other hand, the test temperature range (-70°C to 150°C) that the existing high and low temperature testing machine can provide is not suitable for the 5G mentioned above In the field of communications, high-precision fields such as chips and aerospace components, and the existing high and low temperature testing machines already have serious frosting problems at the low temperatures they can reach, if the temperature is lower than this temperature, the frosting problem will be more serious

Furthermore, in order to facilitate the observation and operation during the test, the existing high and low temperature testing machines have an observation window and an operation port on the box body. The setting of the observation window and the operation port reduces the sealing of the test chamber, which leads to the problem of frosting It is further serious, and it also leads to the fact that the test temperature cannot be lowered. The existing technology can only reduce the size of the observation window as much as possible, which affects the observation field of view.

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