Oxygen Concentrator
12
Flow Delivery
Oxygen exiting the product holding tank flows through a pressure
regulator that reduces the high pressure oxygen to a lower, more
manageable pressure before it is delivered to the patient. This
ensures that the oxygen flowing from the device will work
appropriately with accessories and provide a safe pressure for patient
delivery.
The Companion 5 oxygen concentrator may be equipped with an
Oxygen Concentration Status Indicator (OCSI). In that case, oxygen
gas exiting the pressure regulator flows through a check valve and
then through the OCSI sensor. This is the same area of the
concentrator where the flow is measured. The PCB monitors the
concentration and the flow measured by these sensors, and it will
activate a warning light and audible alarm if the concentra-tion drops
below predetermined levels described in the Warning Alarms section
of the manual.
After exiting the concentration and flow rate sensors, oxygen flows
through the flow control valve (FCV) at the LPM flow rate selected by
the patient and indicated on the flow meter. The oxygen gas then flows
through the HEPA filter where unwanted contaminants are removed.
The oxygen is then delivered to the patient through the outlet barb.
Figure 3: Schematic Diagram of Pneumatic Operation
Electrical Operation
All electrical components of the CAIRE Companion 5 are all controlled
by a PCB. The electrical cord supplies mains AC power (120 VAC @
60 Hz or 230 VAC @ 50 Hz) to the main circuit board when the power
switch is in the “ON” (
|
)position. The PCB dis-tributes the mains power
to all of the electrical components. The AC mains power is distributed
and routed directly to the compres-sor and the cooling fan. The
compressor and cooling fan both operate at 120 VAC @ 60 Hz or 230
VAC @ 50 Hz. The remaining power travels to a DC power convertor/
regulator. Figure 4 is a block diagram showing the flow and distribution
of mains power into the concentrator.
or
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Figure 4: Diagram of Mains Electrical Distribution
