Patent · US Active

Fan

US11768090B2 · kind B2 · utility

0Cited by

2References

14Claims

0Family size

Assignee

ZIEHL-ABEGG SE · DE

Inventors

Frieder LOERCHER · Braunsbach, DE
Alexander Herold · Erlangen, DE

Key dates

Filing date	Mar 9, 2020
Grant date	Sep 26, 2023
Priority date	—
Expiry date	May 28, 2040

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF24F2110/30
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A fan, in particular axial fan and preferably backward-curved radial fan, having an impeller equipped with blades, an electric motor for rotating the impeller and a device for determining the airflow when the impeller is rotating. The device for determining the airflow includes a volume flow measuring wheel arranged in the air flow, which is arranged upstream of the impeller on the inflow side. The air volume flow is calculated or derived from the rotational speed of the volume flow measuring wheel.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.