2-68 
 
Figure 18 Pneumatic diagram of the mechanical vaporizer manifold assembly 
The mechanical vaporizer manifold assembly consists of the check valve assembly, connector 
assembly, locking plate assembly, vaporizer manifold, vaporizer pad, and inlet/outlet quick 
connectors. The structural diagram of the mechanical vaporizer manifold assembly is shown 
below. 
 
Figure 19 Structural diagram of the mechanical vaporizer manifold assembly 
 
2.3.4.2 Electronic Vaporizer (for A9) 
The electronic vaporizer can accurately feed the anesthetic agent into the anesthesia breathing 
circuit at certain concentration. During operating of the electronic vaporizer, the electronic 
vaporizer manifold provides 150 kPa (22 psi) drive gas, which flows through the drive gas inlet 
(14.3), mechanical pressure relief valve (14.6), pressure sensor (14.7), and drug pool entrance 
switch valve (14.8) into the drug pool of the vaporizer. The drive gas drives the anesthetic liquid 
in the drug pool to flow through the filter (14.11) and exit safety valve (14.12) into the injector 
(14.13), which injects pure anesthetic liquid to the mixing chamber (14.16) at certain frequency. 
In addition, the fresh gas of the anesthesia machine enters the mixing chamber through the fresh 
air inlet (14.15), and is fully mixed with the anesthetic gas. Then the mixed gas is delivered to the 
patient side through the fresh gas outlet (14.17). The pneumatic diagram of the electronic 
vaporizer is shown below.