US 11,946,478 B2
Fan assembly
David John Shorter, Swindon (GB); Liam Craig Barclay, Bristol (GB); Mark Douglas Whiting, Bristol (GB); Victoria Isabelle Palmer, Gloucester (GB); Jonathan Edward Clear, Bath (GB); Edward Michael Waugh, Swindon (GB); Daniel James Beavis, Bristol (GB); Thomas Sideropoulos, Bristol (GB); and James Benjamin Brooks, Bristol (GB)
Assigned to Dyson Technology Limited, Wiltshire (GB)
Appl. No. 16/977,531
Filed by Dyson Technology Limited, Wiltshire (GB)
PCT Filed Feb. 27, 2019, PCT No. PCT/GB2019/050543
§ 371(c)(1), (2) Date Sep. 2, 2020,
PCT Pub. No. WO2019/171024, PCT Pub. Date Sep. 12, 2019.
Claims priority of application No. 1803499 (GB), filed on Mar. 5, 2018.
Prior Publication US 2020/0400152 A1, Dec. 24, 2020
Int. Cl. F04D 25/08 (2006.01); F04D 27/00 (2006.01); F04D 29/42 (2006.01)
CPC F04D 25/08 (2013.01) [F04D 27/004 (2013.01); F04D 29/4226 (2013.01)] 37 Claims
OG exemplary drawing
 
1. A fan assembly comprising:
a fan body;
a motor-driven impeller housed within the fan body and arranged to generate an airflow;
a nozzle comprising a base surrounding an upper portion of the fan body and an air outlet arranged to emit the airflow from the fan assembly;
a plurality of sensors connected to the fan body and arranged to measure a value for each of a plurality of air quality characteristics;
a display positioned on the fan body and viewable through the base of the nozzle, the display arranged to present data to a user of the fan assembly;
a user interface positioned on the fan body: and
a processor connected to the fan body and configured to:
receive, from the plurality of sensors, measured values for each of the plurality of air quality characteristics;
for each of the plurality of air quality characteristics, identify one of a corresponding set of intervals within which the measured value falls and select an air quality index value associated with the identified interval;
identify the highest of the selected air quality index values as a current overall air quality index value; and
cause the display to display a time series plot of the current overall air quality index value and a number of preceding overall air quality index values.