Temperature equalizing structure of low-temperature surface source black body and manufacturing method of temperature equalizing structure

Abstract

The invention provides a temperature equalizing structure of a low-temperature surface source black body and a manufacturing method thereof. The structure comprises a cold source connecting part which is connected with a cold source, and a heat mixing plate, wherein the cold source connecting part is arranged on the heat mixing plate, and energy conducted from the cold source connecting part is conducted and distributed in the heat mixing plate; a cooling capacity distributor is arranged on the side, away from the cold source connecting part, of the heat mixing plate, and an annular groove is formed in the cooling capacity distributor. The structure has better temperature field distribution, the cooling capacity is regulated and controlled through the cooling capacity distributor in the temperature equalizing body, so a black body radiant panel is heated more uniformly, and the influence of boundary heat exchange can be offset through heat compensation; the requirement for a heat mixing structure is reduced, and the weight of the temperature equalizing body is effectively reduced.

Description

technical field [0001] The invention relates to the field of temperature control, in particular to a temperature uniform structure of a low-temperature surface source black body and a manufacturing method thereof. Background technique [0002] Temperature uniformity is an important technical index of surface source blackbody. According to Planck's equation, the spectral radiance of a blackbody radiation source is expressed by the blackbody temperature and wavelength, and the modified Sakuma-Hattori interpolation equation of Planck's law gives the radiometer calibration scheme, using a set of known emissivity and temperature The radiation thermometer can be calibrated with a black body radiation source. Therefore, as a characterization of temperature parameters, the temperature uniformity and stability of the blackbody radiation source are the main indicators for evaluating the performance of the blackbody radiation source. The quality of uniformity will directly affect the...

AI Technical Summary

Problems solved by technology

[0004] However, the effect of temperature uniformity is achieved by conduction and diffusion in solid metal plates, which means that thicker and heavier metal heat conduction plates are required to ensure the effect of temperature uniformity; only the difference in power distribution due to cold sources can be reduced As a result, the temperature difference of the radiation surface of the black body has an upper limit, and the reduction effect cannot be completely eliminated, and the temperature uniformity effect is low

In addition, the boundary heat transfer existing on the side of the surface source blackbody will also seriously affect the temperature uniformity of the blackbody radiation surface, resulting in the temperature difference between the center of the blackbody radiation surface and its surroundings, especially when there is a large temperature difference between the surface source blackbody and the ambient temperature. One problem cannot be solved by the traditional homogeneous body

Images