Cooling apparatus of environment tester

Abstract

The invention relates to a cold supply device of an environment tester, belonging to the technical field of reliability test equipment. The environment tester comprises a test box body, the test box body comprises an upper box cavity and a working cavity which are divided through an upper cross beam; the cold supply device comprises a liquid nitrogen transportation mechanism, a valve mechanism, a liquid nitrogen spray feeding mechanism, at least one gas circulating mechanism, a mechanical refrigeration connecting mechanism and a gas leakage mechanism, wherein the liquid nitrogen transportation mechanism is arranged on a top plate of the test box body to be communicated with the upper box cavity; the valve mechanism is arranged on the test box body, and corresponds between the upper box cavity and the working cavity; the liquid nitrogen spray feeding mechanism is arranged on the cavity wall of the working cavity, and is communicated with the working cavity; the gas circulating mechanism is installed on the top of the test box body; the mechanical refrigeration connecting mechanism is arranged on the test box body, and is communicated with the working cavity; the gas leakage mechanism is arranged on the test box body, and is communicated with the working cavity. The invention can satisfy the test requirements for low temperature and large temperature variability, can be also meet the test requirements that the temperature is not needed to be low and the temperature variability is not large, and saves the energy.

Description

technical field [0001] The invention belongs to the technical field of reliability testing equipment, and in particular relates to a cooling device for an environmental testing machine. Background technique [0002] As is well known in the industry, for various electronic products, various mechanical parts and even raw materials that need to work in extremely harsh environments, strict reliability enhancement tests are usually required. Reliability enhancement tests are often performed by corresponding environmental testing machines. to take charge. [0003] The environmental testing machine is a tool used by people to simulate the environment in which products are used. It can help people evaluate the possible impact of the environment on the product in advance, so as to find out the reasons in advance, take measures, and prevent problems before they happen, so that the product can be tested in practice. In the process of use, it can play its due function and ensure its du...

AI Technical Summary

Problems solved by technology

However, although mechanical refrigeration has the advantages of low energy consumption, the test range is relatively narrow, and it cannot meet the tests of very low temperature and large temperature change rate, so the scope of use is restricted. Therefore, how to combine liquid nitrogen refrigeration with mechanical refrigeration The complementarity of advantages has become a technical problem that the industry has been paying attention to and has been seeking to solve for a long time. The technical solutions to be introduced below are produced under this background

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