Intelligent fresh gas flow and oxygen concentration control device for anesthesia machine
A technology of fresh gas and oxygen concentration, applied in respirator and other directions, can solve the problems of unstable gas supply, inability to precisely control the flow of fresh gas and oxygen concentration, low safety, etc., to achieve stable supply, safe and reliable use, and gas flow. Accurate effect of value and oxygen concentration
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[0012] The present invention will be further described below with reference to the drawings and embodiments.
[0013] figure 1 As shown, the intelligent control device for fresh gas flow and oxygen concentration mainly includes a gas mixing chamber 19, an oxygen input channel 1, a laughing gas input channel 2, an air input channel 3, and a PLC control system 20. The oxygen input channel 1 is provided with a one-way valve 4, a regulating valve 10, a filter 13, and a flow sensor 16 in sequence from the intake end. A stepping motor 7 is connected to the regulating valve 10, and the intake end of the oxygen input channel 1 is also provided There is an alarm valve 21, the stepping motor 7 and the flow sensor 16 are all connected to the PLC control system 20; the nitrous oxide input channel 2 is provided with a check valve 5, a regulating valve 11, a filter 14 and a flow sensor 17 in sequence from the intake end. The stepping motor 8 is connected to the regulating valve 11. The steppi...
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