A kind of inflation and deflation device and method

Abstract

The present invention relates to an inflation and deflation device and method, wherein the method includes: a controller obtains the preset number of inflation and deflation cycles according to the start control signal of the inflation and deflation cycle and sets it as the number of remaining cycles; when the number of remaining cycles is greater than or equal to 1 , the solenoid valve and the intake valve are simultaneously opened according to the first inflation control command; the first pressure sensor monitors the gas pressure in the transfer chamber in real time to obtain the first gas pressure; when the first gas pressure reaches the first preset pressure, the control The controller closes the solenoid valve and the intake valve, and counts the standing time after closing; when the standing time reaches the first preset time, the exhaust valve set on the transfer cavity is set according to the first exhaust control command open; when the first gas pressure reaches the second preset pressure, the controller will close the exhaust valve; the controller will reduce the number of remaining cycles by 1; when the number of remaining cycles is 0, the valve core pressure set on the sealed cavity The needle pops up, disconnecting the sealed cavity from the second line.

Description

technical field [0001] The invention relates to the technical field of inflation and deflation, in particular to a method for an inflation and deflation device. Background technique [0002] Since electronic components or precision parts will age and fail when stored in the air for a long time, it is necessary to put the long-term stored components or precision parts in a closed cavity and fill the closed cavity with inert gas to prolong the life of the product. storage period. [0003] In order to avoid too many openings in the cavity, generally there is only one inflation valve to replace and pressurize the internal gas, and a pressure gauge cannot be directly installed on the cavity to measure the internal pressure. In the case that there is no pressure gauge in the cavity, the actual pressure of the cavity and the gas concentration in the cavity cannot be known. It is easy to cause the filling gas pressure to be too high and the container for placing the product to be d...

AI Technical Summary

Problems solved by technology

In the case that there is no pressure gauge in the cavity, the actual pressure of the cavity and the gas concentration in the cavity cannot be known. It is easy to cause the filling gas pressure to be too high and the container for placing the product to be deformed, or the filling gas concentration to be insufficient and the product to be placed may be damaged. The case where the memory is greatly shortened

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