Dräger Babylog 8000SC, Техническое и сервисное руководство, Страница: 35 / 155

Dräger Medical AG & Co. KGaA 6173.3
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Function description Babylog 8000
8.2.2 Expiration
The PEEP control valve Y 4.1 vents the control pressure at the expiratory valve Y 5.1. The expiratory
valve Y 5.1 opens the ventilation system. Expiration takes place through the open expiratory valve Y 5.1.
The ejector, which is driven through the open solenoid Y 1.4, supports expiration.
Fig. 11: Venting
8.2.3 PEEP
The PEEP/PIP valve is a pressure regulating valve which generates a control pressure of -19 mbar to
+80 mbar. Control pressures are used to trigger the inspiratory and expiratory valves in order to deliver
the peak inspiratory pressure (PIP) during inspiration and the positive end-expiratory pressure (PEEP)
during expiration to the patient-side valves.
An ejector integrated into the valve allows a negative control pressure of up to -19 mbar.
8.2.4 CPAP
The control pressure generated by the PEEP control valve Y 4.1 acts on the control side of the expiratory
valve Y 5.1 and builds up a continuous positive airway pressure in the ventilation system.
6 Pressure measurement
5 Expiratory valve
4 PEEP/PIP valve
Y5.1
Y4.1
R1.1
S6.3
S6.4
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From
Y1.4