公开(公告)号：US20230417632A1

公开(公告)日：2023-12-28

申请号：US18339572

申请日：2023-06-22

申请人： ESPEC CORP.

发明人： Haruki SETO ,  Yuta Moriyama ,  Katsuhiko Watabe ,  Tetsuya Okadome ,  Masaki Yamamoto ,  Takumi USUI

IPC分类号： G01M99/00 ,  F25B7/00

CPC分类号： G01M99/002 ,  F25B7/00 ,  F25B2400/0409 ,  F25B2400/0411

摘要： There is provided an environmental test apparatus that can create a predetermined environment inside a test chamber, the environmental test apparatus including: the test chamber for placing a test target object; a heating portion; and a cooling portion. The cooling portion has a refrigeration circuit having a compressor, a condenser, an expansion portion, and an evaporator and in which a phase-changing refrigerant is to be circulated. The refrigeration circuit has a first bypass flow path connecting a discharge side of the condenser and a suction side of the compressor and the first bypass flow path is provided with a first flow rate control portion. A temperature measurement portion for measuring a temperature of the compressor and a controller are provided. The controller is configured to control a substantial degree of opening of the first flow rate control portion according to a detection value of the temperature measurement portion.