Patent ID: 11859637
Assignee: LG ELECTRONICS INC.
Field: Other consumer goods (Other fields)
Classification: CPC F  D | IPC D  F

Claim 0:
1. A washing machine comprising:
a tub;
a drum disposed in the tub;
a first circulation pipe and a second circulation pipe that are configured to supply water into the drum; and
a pump configured to pump water discharged from the tub to the first and second circulation pipes,
wherein the pump comprises:
an impeller,
a pump motor configured to rotate the impeller,
a water introducing port connected with the tub,
a pump housing that defines a housing space accommodating the impeller,
a second circulation port connected to the second circulation pipe, and
a first circulation port connected to the first circulation pipe,

wherein an inner surface of the pump housing comprises:
a rotating water current guide part that defines a curved surface along a rotational direction of the impeller, wherein a first entrance hole of the first circulation port and a second entrance hole of the second circulation port are defined in the rotating water current guide part,
a cut-off point located closer than the first entrance hole to a center of rotation of the impeller in a radial direction of the impeller, wherein the first entrance hole is located between the cut-off point and the second entrance hole in the rotational direction of the impeller, and
a biased water current guide part that connects the first entrance hole to the cut-off point, and

wherein the biased water current guide part extends from the cut-off point to the first entrance hole and is tilted in a direction opposing the rotational direction of the impeller with respect to a radial line that extends from the center of rotation of the impeller to the cut-off point.