How to use the refrigerator solenoid valve life test bench

　　

制冷机电磁阀是现代制冷系统中的关键部件，其性能的稳定性和寿命直接关系到整个制冷系统的运行效果和寿命。那制冷机电磁阀阀寿命测试台该如何使用，来看广州智品汇电子科技是如何介绍的。
Refrigeration solenoid valves are key components in modern refrigeration systems. Their performance stability and lifespan are directly related to the overall system's performance and lifespan. So, how do you use a refrigerator solenoid valve lifespan test bench? Let's see how Guangzhou Zhipinhui Electronic Technology explains it.

Number of test stations: 5. By replacing the test fixture, life and leakage tests can be performed on electronic expansion valves and solenoid valves (leakage is tested using the pressure-maintaining method).

Electronic Expansion Valve Testing:

① Secure the expansion valve to the life test bench and drive it with a set voltage (e.g., DC12V), a specified excitation method, and a set frequency (e.g., 83 PPS).

② Set the inlet (side pipe) pressure to 1.0 MPa, and the outlet (straight pipe) to atmosphere. Open and close the valve a set number of times (e.g., 100,000) in a cycle of 0 to 500. Use nitrogen or clean compressed air, with a source pressure ≥ 4.5 MPa.

Test pressure is manually adjustable from 1 to 3.5 MPa.

Note: The valve supports opening and closing cycles up to 9.99 million times, with the goal of determining the maximum life of the electronic expansion valve.

③ Failure Detection: Read the pressure using a pressure sensor. Set the fully closed and open valve pressures in the software to detect changes in inlet pressure. When the air inlet pressure exceeds the set value, the system alarm prompts that the test piece has failed, and records parameters such as the current number of runs.