Dust defelector for silicon mass airflow sensor

Details Dust defelector for silicon mass airflow sensor Dust defelector for silicon mass airflow sensor

1990-02-02

1991-01-01

Goldstein, Herbert

Measuring and testing

Simulating operating condition

Marine

73202, 7320421, G01P 500, G01F 500

Patent

active

049810359

ABSTRACT:
The silicon sensing element of a mass airflow sensor is shielded from direct impact by large dust particles by means of a plastic deflector that is disposed in spaced upstream relationship to the entrance of a by-pass venturi containing the sensor. The deflector is supported on a mesh screen and is arranged such that air can enter the by-pass venturi after having passed by and behind the deflector. In another embodiment the deflector is an airfoil that is part of a probe assembly containing the sensing element.

REFERENCES:
patent: 4304130 (1981-12-01), Peter et al.
patent: 4412419 (1983-11-01), Eiermann et al.
patent: 4785662 (1988-11-01), Ohta et al.
patent: 4856328 (1989-08-01), Johnson
Huijsing et al., "Monolithic Integrated Direction-Sensitive Flow Sensor", in IEEE Trans., vol. 29, No. 1/82, pp. 133-136.

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