US 12,071,956 B2
Fan shroud and fan assembly having fan shroud
Braden Vaughan, Greenville, SC (US); and Venkat Praveen Gambhir, Greenville, SC (US)
Assigned to Techtronic Cordless GP, Anderson, SC (US)
Filed by TECHTRONIC CORDLESS GP, Anderson, SC (US)
Filed on Jan. 11, 2023, as Appl. No. 18/153,085.
Prior Publication US 2024/0229822 A1, Jul. 11, 2024
Int. Cl. F04D 29/42 (2006.01); F04D 25/06 (2006.01); F04D 25/08 (2006.01); F04D 29/70 (2006.01)
CPC F04D 29/4226 (2013.01) [F04D 25/0673 (2013.01); F04D 25/08 (2013.01); F04D 29/703 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A fan assembly comprising:
a motor having an output shaft;
a plurality of fan blades coupled to the output shaft and configured to be rotated by the output shaft when the motor is actuated to generate airflow in an airflow direction; and
a fan shroud surrounding the plurality of fan blades,
wherein the fan shroud comprises a converging section having an inner diameter that decreases in the airflow direction, and a constant diameter section downstream of the converging section in the airflow direction that has a substantially constant diameter,
wherein the converging section surrounds at least a portion of the motor.