Low-temperature blackbody radiation source device with frosting and dewing prevention and TEC hot end heat dissipation functions

Abstract

The invention provides a low-temperature blackbody radiation source device with frosting and dew formation prevention and TEC hot end heat dissipation functions. The device is characterized in that the low-temperature blackbody radiation source device comprises a shell, a cooling fin fixed on the shell and an air curtain ring, wherein the cooling fin is communicated with a nitrogen source through an air inlet, nitrogen enters the cooling fin through the air inlet for heat exchange, and the air curtain ring is communicated with the cooling fin through an air outlet; a heat exchange channel is arranged in the cooling fin; the shell is provided with an air curtain ring in the opening direction of the low-temperature blackbody radiation source cavity, the air curtain ring is provided with a nitrogen inlet, the nitrogen inlet is communicated with an outlet of the heat exchange channel of the cooling fin, and nitrogen is fed into the air curtain ring through the nitrogen inlet after being subjected to heat exchange through the cooling fin; the air curtain ring is in a hollow shape, small nitrogen output holes at equal intervals and micro angles are formed in the inner wall of the air curtain ring, nitrogen is blown out through the small nitrogen output holes to form a closed nitrogen curtain, and outside air is isolated from entering the low-temperature blackbody radiation source cavity. The low-temperature blackbody radiation source device with the frosting and dewing prevention and TEC hot end heat dissipation functions is simple in structure and small in occupied space, and has wide application prospects in the field of low-temperature blackbody radiation source devices.

Description

technical field [0001] The invention relates to the technical field of infrared system quantification, in particular to a low-temperature black body radiation source device with the functions of anti-frost and condensation and TEC hot-end heat dissipation. Background technique [0002] In the use of low-temperature blackbody radiation source, TEC is used as the main cold and heat source of the blackbody for heating and cooling of the commonly used low-temperature blackbody radiation source. When one side of the TEC cools, the other side generates heat, and the efficiency of the TEC depends on the degree of heat dissipation at the hot side. Therefore, the method commonly used at present is to add a heat sink and water cooling at the hot end of the TEC to reduce the heat at the hot end of the TEC, so as to achieve high-efficiency operation. However, with the development of infrared instruments, the demand for lower temperatures is increasing, and the conventional methods cann...

AI Technical Summary

Problems solved by technology

[0006] But in the anti-frost and condensation device disclosed in this patent application, the air containing moisture still enters in the cavity of the low-temperature blackbody radiation source, and the moisture needs to be For drying treatment, the structure is complicated and the operation is cumbersome

Images