Patent ID: 6450043
Filing Date: 2002-09-17
Classification: F24F,G01F

Abstract:
A probe for use in monitoring intake air volume in an air handling system, wherein intake air travels in a turbulent stream flowing in a direction downstream from an upstream air intake, the probe comprising:a high pressure chamber having a front wall including an external front face for facing upstream in the turbulent stream, transverse to the direction of flow of the turbulent stream, the front face having transverse dimensions establishing an impact area on the front face for disturbing the turbulent stream so substantially as to effect a substantial change in direction of the turbulent stream; first pressure sensing holes in the front wall for establishing a first pressure in the high pressure chamber when the probe is placed in the turbulent stream; a low pressure chamber having a rear wall including an external rear face for facing downstream in the turbulent stream, transverse to the direction of flow of the turbulent stream, when the front face faces upstream; second pressure sensing holes in the rear wall for establishing a second pressure in the low pressure chamber when the probe is placed in the turbulent stream; a seal between the high pressure chamber and the low pressure chamber for enabling establishment of a higher first pressure in the high pressure chamber as compared to a lower second pressure in the low pressure chamber; a high pressure output for transmitting information pertaining to the first pressure in the high pressure chamber; and a low pressure output for transmitting information pertaining to the second pressure in the low pressure chamber; whereby a difference between the first pressure and the second pressure provides information pertaining to intake air volume.