Device for controlling the ventilation of an internal space, par

Details Device for controlling the ventilation of an internal space, par Device for controlling the ventilation of an internal space, par

1992-02-26

1993-11-09

Joyce, Harold

Ventilation

Vehicle

Having automatic control means

454139, B60H 306

Patent

active

052598136

ABSTRACT:
The quality of the external air is determined by means of a pollutant sensor. The quality of the internal air is determined by calculation taking account of the air quantities introduced from outside into the internal space. A decision between air supply operation and air recirculation operation is then made on the basis of a comparison of the air qualities inside and outside. The pollutant sensor is preferably located in a casing whose internal space is accessible to gases through an opening which is preferably sealed by a gas-permeable membrane.

REFERENCES:
patent: 4458583 (1984-07-01), Fukui et al.
patent: 4742763 (1988-05-01), Holter et al.

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