The core accessories of ventilator: the role of proportional solenoid valve

1. The role of proportional solenoid valve

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

2. Double proportional solenoid valve

At present, some anesthesia machines use bipolar proportional solenoid valves. In the first stage, precise air-oxygen mixing is performed, that is, the high-pressure mixed gas is generated first according to the set oxygen concentration. The second stage performs precise ventilation release, that is, produces various wave-shaped steam outputs according to the set ventilation regulations.

3. Proportional flow A control system

In the anesthesia machine and ventilator, the proportion of the total flow control system used is based on a single gate valve or a valve.