Inflation and deflation apparatus and method

Abstract

The invention relates to an inflation and deflation device and method. The method comprises the steps that a controller obtains preset inflation and deflation cycle set times according to an inflationand deflation cycle starting control signal and sets the preset inflation and deflation cycle set times as a residual cycle index; when the residual cycle index is greater than or equal to 1, an electromagnetic valve and an air inlet valve are opened simultaneously according to a first inflation control instruction; a first pressure sensor monitors the gas pressure in a transfer cavity in real time to obtain the first gas pressure; when the first gas pressure reaches a first preset pressure, the controller closes the electromagnetic valve and the gas inlet valve and performs timing statisticson the closed standing duration; when the standing duration reaches a first preset duration, an exhaust valve arranged on the transfer cavity is opened according to a first exhaust control instruction; when the first gas pressure reaches a second preset pressure, the controller closes the exhaust valve; the controller subtracts 1 from the residual cycle index; and when the number of the residualcycle index is zero, a valve element pressing needle arranged on a closed cavity body bounces up, and connection between the closed cavity body and a second pipeline is disconnected.

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 if 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 def...

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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