US 12,410,810 B2
Water pump
Hyuntae Lee, Sejong-si (KR); Sungwoong Park, Cheonan-si (KR); and Seongjin Son, Ulsan (KR)
Assigned to COAVIS, Sejong-si (KR)
Filed by COAVIS, Sejong-si (KR)
Filed on Feb. 19, 2025, as Appl. No. 19/057,646.
Claims priority of application No. 10-2024-0023473 (KR), filed on Feb. 19, 2024.
Prior Publication US 2025/0264110 A1, Aug. 21, 2025
Int. Cl. F04D 29/22 (2006.01); F04D 1/00 (2006.01); F04D 13/06 (2006.01)
CPC F04D 29/2205 (2013.01) [F04D 1/00 (2013.01); F04D 13/06 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A water pump, comprising:
an upper casing and a lower casing that are coupled to each other to form an impeller accommodating space in which an impeller is rotatably accommodated, provided with an inlet communicating with the impeller accommodating space on an upper side of the impeller accommodating space to allow fluid to be introduced, a discharge channel communicating with the impeller accommodating space on an outer side of the impeller accommodating space in a radial direction, and an outlet connected to the discharge channel to discharge the fluid to the outside; and
an impeller that is rotatably provided in the impeller accommodating space,
wherein the upper casing has an upper bulkhead formed to protrude at a position between the impeller accommodating space and the discharge channel in the radial direction, and the lower casing has a lower bulkhead formed to protrude at a position between the impeller accommodating space and the discharge channel in the radial direction, and
a first gap between an upper side of an outer end of the impeller and the upper bulkhead in the radial direction is formed greater than a second gap between a lower side of an outer side end of the impeller and the lower bulkhead in the radial direction.