Patent ID: 11913461
Assignee: ZIEHL-ABEGG SE
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 0:
1. A fan for determining a media flow moved by the fan (1), the fan having an electric motor (2) and an impeller (3) driven by the electric motor (2), wherein the impeller (3) moves a gaseous medium in a media flow from an inflow side (5) to an outflow side (7),, comprising:
a pressure sensor system,
a speed ascertainment system,
an evaluation unit, and
a bulkhead (11), which is formed inside the electric motor (3);
wherein the pressure sensor system is designed to ascertain an actual pressure difference (Δp*) between a first region (10) and a second region (13) wherein the bulkhead (11) prevents or reduces a pressure equalization between the first region (10) and the second region (13), wherein at least one of the first region (10) and the second region (13) is formed in the electric motor (2), wherein a pressure (pA) prevails in the first region (10) which corresponds to a pressure (p1) present on the inflow side, wherein a pressure (pB) prevails in the second region (13) which corresponds to a pressure (p2) present on the outflow side,
wherein the speed ascertainment system is designed to ascertain an actual speed (n) of the impeller (3), and
wherein the evaluation unit is designed to determine at least one of a mass flow and a volume flow of the medium based on the actual pressure difference (Δp*), the actual speed (n), and a pressure characteristic curve of the fan (1).