Apparatus for analyzing the particulate matter content of an aerosol

US11530968B2 · kind B2 · utility

Assignee

• Infineon Technologies AG · DE

Inventors

• Alfons Dehe · Reutlingen, DE
• Christian Bretthauer · Munich, DE

Key dates

• Filing date: Jul 13, 2020
• Grant date: Dec 20, 2022
• Expiry date: Jan 20, 2041

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2291/102
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An apparatus for analyzing the particulate matter content of an aerosol includes an aerosol chamber configured to receive an aerosol, the particulate matter content of which should be analyzed, at least one ultrasonic generator configured to produce ultrasonic waves in the aerosol received in the aerosol chamber, an ultrasonic detector configured to detect ultrasonic waves produced by the at least one ultrasonic generator in the aerosol, and an evaluator having a data exchange communication link with the ultrasonic detector and configured to ascertain the matter content on the basis of signals output by the ultrasonic detector. The ultrasonic generator and the ultrasonic detector are positioned relative to one another such that a path length to be traversed by ultrasonic waves between the ultrasonic generator and the ultrasonic detector is less than 1 cm.