Device for the detection of noxious substances in the air supplied to a compartment occupied by people
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United States of America Patent
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-
May 10, 1988
Grant Date -
N/A
app pub date -
Dec 10, 1986
filing date -
Apr 23, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
One or more sensors are used for the indication and/or control and/or adjustment of filter devices and/or ventilation systems in relation with a measured value or respective measured values, established by the sensor, or respective sensors. In order to provide an economically simple and maintainance free device of the afore-mentioned kind with reduced space requirements, which responds to all common air pollutants and insures a reliable reading, the invention proposes that the sensor be placed in a housing with a side facing the oncoming flow preceded within the housing by a measuring slot abutting an air chamber of the housing, where a pulsator is located, whereby one or more air-inlet openings lead to the cylinder space of the air chamber facing away from the sensor. The pulsator consists of a piston coupled with an oscillator. In the air chamber an air-conditioning device, preferably a heating device, is provided.
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