Ventilation – Vehicle – Having inlet airway
Patent
1998-03-18
2000-09-05
Joyce, Harold
Ventilation
Vehicle
Having inlet airway
96 4, B60H 300
Patent
active
061134848
DESCRIPTION:
BRIEF SUMMARY
The invention relates to a ventilation device for a vehicle, particularly a passenger vehicle, according to the preamble of claim 1.
A ventilation device of this kind is described in DE-A-2 355 544. With this device, oxygen is supplied into the passenger compartment using oxygen stored in a pressurized container. When the stock of oxygen is exhausted the pressurized oxygen container must be exchanged for a full pressurized oxygen container. The vehicle must be stopped for this purpose. Furthermore, corresponding pressurized containers are heavy.
Ventilation devices for vehicles generally serve to supply fresh air from the environment to the passenger compartment of a vehicle. More recently, soot and pollen filters have also been used in such ventilation devices in order to free the air supplied to the passenger compartment from airborne particulates.
It is also known that an increased oxygen supply improves a human being's performance. Corresponding devices have, however, only been fairly extensively used hitherto in intensive care or in a doctor's surgery.
GB-A-2 122 103 also discloses a device which serves to supply oxygen-enriched air to the interior of a vehicle. The oxygen enrichment takes place using semi-permeable membranes to which ambient air is supplied by a compressor at pressure above atmospheric. The oxygen-enriched air discharged at the one outlet of the enrichment unit is fed into the interior of the vehicle via a fan. The fan and the compressor are driven by a common drive motor. The outlay in terms of equipment for the oxygen enrichment in the passenger compartment is therefore large, and the entire unit requires some space because of the built-on drive motor.
The object of the invention is to develop a ventilation device according to the preamble of claim 1 in such a way that the oxygen enrichment in the passenger compartment takes place at a high oxygen enrichment rate although the oxygen enrichment unit has small dimensions.
According to the invention this object is achieved by a ventilation device with the features quoted in claim 1.
The ventilation device according to the invention has the further advantage that it operates with a high degree of oxygen enrichment efficiency since the compressor upstream of the oxygen enrichment device is directly driven mechanically from the drive motor of the vehicle.
Advantageous developments of the invention are quoted in sub-claims.
Oxygen enrichment devices as quoted in claim 2 are distinguished in that they require no chemical consumables at all and operate exclusively with solid materials, not with liquid ones.
According to the development of claim 3 it is guaranteed that the compressor is automatically switched off when a sufficient quantity of fresh air to be processed is available at the inlet of the oxygen enrichment device.
The achievement according to claim 4 is that the compressor always operates for fairly long periods of time and is then idle again, is not continuously switched on and off.
According to claim 5, the removal of nitrogen-enriched residual mixture from the oxygen enrichment device is achieved in simple manner.
The geometry quoted in claim 6 provides a particularly effective flushing of the oxygen enrichment device.
The development of the invention according to claim 7 is of advantage in respect of a prevention of disturbing noises which would otherwise accompany the flushing of the oxygen enrichment device.
A ventilation device according to claim 8 guarantees that no liquid, such as is collected by the fresh air inlet when driving in rain, finds its way into the oxygen enrichment device and optionally a compressor upstream thereof.
With a ventilation device according to claim 9 the liquid collector may be particularly small as it does not require a large sump.
The development of the invention according to claim 10 is of advantage in respect of an effective collection of a large quantity of fresh air. This also provides an increase in the pressure of the air discharge of the collecting well corresponding to the decrease in
REFERENCES:
patent: 5582262 (1996-12-01), Wust
Patent Abstracts of Japan, vol. 11, No. 21 (M-555) & JP,A,61 195223 (Matsushita Electric Works Ltd) Database WPI. week 8837. Derwent Publications Ltd., London, GB; AN 88-262582 & SU,A, 1 375 910 (Lepyanko A P).
Boles Derek S.
Joyce Harold
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