Air thermal shock chambers are divided into three-zone type and two-zone type according to test requirements and testing standards. The difference lies in the testing method and internal structure. Thermal shock chamber is used to test the degree to which composite materials and material structures can withstand instantaneous and continuous environments of high and extremely low temperatures, that is, to test their chemical changes or physical changes caused by thermal expansion and contraction in the shortest possible time. Test samples include metals, plastics, rubber, electronics... and other materials, which can be used as a basis or reference for product improvement.
When the thermal shock chamber performs rapid high and low temperature shock tests, the compressor will frost. At this time, the compressor needs to be defrosted. So, what is the defrosting frequency of the thermal shock test chamber to ensure long-term use of the machine?
There are two defrosting methods for thermal shock test chambers: one is by time, and the other is by the number of cycles. Generally, most manufacturers and customers rarely use set time to defrost, because the disadvantage is that after the set defrost time is up, the chamber may be undergoing testing, and setting according to the number of cycles means defrosting after the hot and cold shock test is completed, so it is recommended to set according to the number of cycles.
The defrosting frequency of Guangdong Yuanyao thermal shock test chamber has been set before leaving the factory. It usually defrosts once every 10 cycles. It will defrost automatically after the number of cycles is reached. Users do not need to modify it if they follow the recommended values. If the customer has his own defrosting frequency requirements, he can modify the number of cycles or time in the defrost settings of the equipment control system. Regarding the range of settable values: according to the time, it can be set within 1 to 9999 hours, and according to the number of cycles, it can be set within 1 to 9999 cycles.
