The invention relates to a three-box type temperature
impact test box, which comprises a box body, an electrical cabinet, an electrical
system, a refrigerating
system and a
heating system, wherein the interior of the box body is divided into a high temperature area, a test area and a low temperature area from the top to the bottom, pneumatic
doors are arranged between the test area and the high temperature area and between the test area and the low temperature area, the pneumatic
doors are connected with air cylinders, the
heating system and a temperature resisting circulation fan are arranged in the high temperature area, the refrigerating
system and a temperature resisting circulation fan are arranged in the low temperature area, and temperature resisting circulation fans are respectively arranged in a high temperature box body and a low temperature box body. The three-box type temperature
impact test box disclosed by the invention has a novel structure and is convenient to use, a three-box type temperature
impact and control process is adopted to completely overcome the defect of temperature interpenetration, the action speed of the pneumatic
doors is high, and the switching process of the high temperature area and the low temperature area can be completed within 3 seconds. The travel switch fault caused by conventional motor pullup and the defect of pull deformation of thebox body are avoided, the temperature in the box body is uniform and stable, and the working efficiency is greatly improved.