Original source: Analysis of the heating device and cooling link of the constant temperature and humidity chamber Xiaobian: Lin frequency instrument The constant temperature and humidity chamber is used for the inspection quality of instruments, vehicles, metals, foods, etc., mainly to detect the weather resistance of materials in high temperature, cold, dry and humid environment; therefore, the heating device and the cooling link are the equipment. One of the important core functions, then how does it achieve heating and cooling? Xiaobian today to answer for you. The heating device is the key link to control whether the constant temperature and humidity chamber is warming up. When the controller receives the heating command, it will output the voltage to the relay. About 3-12 VDC is added to the solid state relay; its AC terminal is equivalent to the wire connection. At the same time, the contactor is also sucked, and there is voltage at both ends of the heater to cause it to heat up. The circulating fan drives the heat to the box, so that the constant temperature and humidity test chamber heats up, so the temperature can quickly reach the value you set. ; The parameter for judging the performance of a constant temperature and humidity chamber is in its cooling stage. It is mainly composed of compressor, condenser, evaporator and throttling device. The compressor is the heart of the refrigeration system, which is mainly inhaled. Low-temperature and low-pressure gas, then become high-temperature and high-pressure gas, and then condense into liquid to release heat, and then let the fan take away heat. Therefore, the constant temperature and humidity machine is caused by hot air, and then throttling into low-pressure liquid, and then passing through the evaporator to become low temperature. The low-pressure gas passes through the evaporator to become a low-temperature low-pressure gas and finally returns to the compressor. The refrigerant absorbs heat in the evaporator to complete the gasification process and absorb heat, thereby achieving the purpose of cooling, and completing the cooling process of the constant temperature and humidity chamber. The above is about the heating device and cooling of the constant temperature and humidity chamber. Have you answered some questions in your mind? If you have any questions about the equipment, you can directly inquire. AUTRENDS INTERNATIONAL LIMITED , https://www.petspetscare.com