US 12,492,705 B2
Water pump structure and rotor thereof
En-Cheng Chang, Kaohsiung (TW); and Ming-Tsung Li, Kaohsiung (TW)
Assigned to SUNONWEALTH ELECTRIC MACHINE INDUSTRY CO., LTD., Kaohsiung (TW)
Filed by SUNONWEALTH ELECTRIC MACHINE INDUSTRY CO., LTD., Kaohsiung (TW)
Filed on Sep. 19, 2024, as Appl. No. 18/889,419.
Claims priority of application No. 112210285 (TW), filed on Sep. 22, 2023.
Prior Publication US 2025/0101991 A1, Mar. 27, 2025
Int. Cl. F04D 29/22 (2006.01); F04D 1/00 (2006.01); F04D 29/42 (2006.01)
CPC F04D 29/2261 (2013.01) [F04D 1/00 (2013.01); F04D 29/426 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A water pump structure, comprising:
a housing;
a rotor disposed in the housing, and the rotor comprising:
an impeller having a central hole, an outer edge, at least one groove and at least one guiding slot, wherein the at least one groove is in communication with the central hole, the at least one groove extends outward from an inner edge of the central hole to the outer edge of the impeller, and the at least one guiding slot extends inward from the outer edge and free from communicating with the central hole; and
a stator disposed around a periphery of the rotor and spaced apart form the rotor through a separation component disposed between the rotor and the stator.