What are the test requirements for the air conditioning electronic expansion valve life test bench?

　　
This equipment is essential for comprehensive performance and durability testing of electronic expansion valves. Its core purpose is to ensure the valves have a sufficiently long service life and reliability in practical applications. What are the testing requirements for an air conditioning electronic expansion valve life test bench? Let's take a look at how Guangzhou Zhipinhui Electronic Technology explains it.

Under-Load Life Test Requirements

① Secure the expansion valve to the life test bench and operate it at a set voltage (e.g., DC12V), specified excitation mode, 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 0-500. Use nitrogen or clean compressed air, with a source pressure ≥4.5 MPa. The test pressure is adjustable from 1 to 3.5 MPa. Note: Opening and closing up to 9.99 million cycles is also supported to determine the maximum lifespan of the electronic expansion valve.