The core accessory of the ventilator: the working principle of the proportional solenoid valve

Working principle:

Proportional control is a kind of feedback control system software, that is, the transformation of the output independent variable and the transformation of the opinion feedback data signal are related to the proportion (positive proportion or inverse proportion). Percentage flow monitoring refers to the release of the converted current (input independent variable) to the air supply automatic control system under the premise that the air pressure and temperature in the air supply automatic control system will not change, and then change the air supply The diameter makes the total flow of the steam (output independent variable) and the amount of current (input independent variable) proportionally related.

The role of proportional solenoid valve:

The proportional solenoid valve on the anesthesia machine is used as a suction valve. The flow-adjustable solenoid valve has key functions in two aspects: air-oxygen mixing and precise vapor release. The flow-adjustable solenoid valve is the development trend of contemporary anesthesia machines.