AVEA ventilator systems 211
L2786 Rev. M
Appendix C: Pneumatic Diagram
Gas Delivery Engine
The Gas Delivery Engine receives and conditions supplied Oxygen and Air from external and/or internal (compressor) sources. It
then mixes the gas to the concentration required and delivers the desired flow, or pressure to the patient.
The Gas Delivery Engine begins with the Inlet Pneumatics. The Inlet Pneumatics accepts clean O
2
, or Air; it provides extra
filtration and regulates air and O
2
gas before entering the Oxygen Blender. The Oxygen Blender mixes the gases to the desired
concentration before reaching the Flow Control Valve. The Flow Control Valve controls the flow rate of the gas mixture to the
patient. Between the Oxygen Blender and Flow Control Valve, the Accumulator System is installed to provide peak flow capacity.
The Flow Sensor provides information about the actual inspiratory flow for closed loop servo control. The gas is then delivered to
the patient through the Safety/Relief Valve and Outlet Manifold.
Figure C1 Gas Delivery Engine
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