US 11,859,623 B2
Cooling system for electric machines
Tadashi Sawata, Coventry (GB); and Aaron Day, Borough Green (GB)
Assigned to HAMILTON SUNDSTRAND CORPORATION, Charlotte, NC (US)
Filed by Hamilton Sundstrand Corporation, Charlotte, NC (US)
Filed on Mar. 25, 2021, as Appl. No. 17/212,140.
Claims priority of application No. 2005311 (GB), filed on Apr. 9, 2020.
Prior Publication US 2021/0317835 A1, Oct. 14, 2021
Int. Cl. H02K 9/00 (2006.01); F04D 25/08 (2006.01)
CPC F04D 25/082 (2013.01) [H02K 9/00 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A cooling system, the system comprising:
a motor that includes a motor housing with channels formed therein;
a propulsion element that is driven by the motor, wherein the propulsion element generates cooling air and directs it at an end face of the motor;
a water tank;
means for mixing water with the cooling air generated by the propulsion element being driven by the motor, applied to the motor the means comprising:
one or more nozzles in fluid communication with the channels;
a pump in fluid communication with the water tank; and
a water supply line arranged between the pump and the housing device and the water tank to provide water from the tank to the channels where the water is distributed to the one or more nozzles, wherein the nozzles are arranged to spray water in the form of a water mist into the flow of cooling air from the propulsion element to the end face of the motor.