Electric water pump

Patent metadata

Field	Value
Publication number	US-12497977-B2
Application number	US-202418760346-A
Country	US
Kind code	B2
Filing date	Jul 1, 2024
Priority date	Jul 4, 2023
Publication date	Dec 16, 2025
Grant date	Dec 16, 2025

Abstract

The present invention provides an electric water pump in which a plurality of inlets and outlets for the distribution of fluid are provided in one housing, and the fluid is pumped into each space by an rotational operation of one impeller in a state where a space is partitioned for each inlet and outlet through which the fluid is distributed, thereby distributing the fluid through multiple paths with one water pump and reducing costs and weight through structure simplification.

First claim

What is claimed is:

1 . An electric water pump, comprising:
a housing partitioned into a distribution space where fluid is distributed and a driving space into which a motor is built, the distribution space having a plurality of inlets and outlets communicating with an outside; and an impeller provided in the distribution space of the housing and connected to the motor to rotate, formed so that the distribution space is partitioned for each inlet and outlet that communicate with each other among the plurality of inlets and outlets, and pumping the fluid to each inlet and outlet when rotating by driving of the motor, wherein the housing is separately composed of a case and a cover, an upper portion of the case is opened upward to form a portion of the distribution space, and form a driving space with the built-in motor at a lower side, and a lower portion of the cover is opened to form the rest of the distribution space and is coupled to an upper portion of the case, wherein the distribution space is partitioned into a first distribution part on the case side and a second distribution part on the cover side by the impeller, wherein the case is formed with the first distribution part that is recessed along an outer side of the distribution space, and the cover is formed with the second distribution part that is recessed along the outer side of the distribution space.

2 . The electric water pump of claim 1 , wherein the case is formed with a first inlet and a first outlet communicating with the first distribution part, and
the cover is formed with a second inlet and a second outlet communicating with the second distribution part.

3 . The electric water pump of claim 2 , wherein the first inlet and the first outlet are symmetrically spaced apart in the first distribution part, and
the second inlet and the second outlet are symmetrically spaced apart from on an opposite side to the first inlet and the first outlet in the second distribution part.

4 . The electric water pump of claim 1 , wherein the impeller includes a body part connected to the motor, and a guide part that rotates with the body part in the first distribution part and the second distribution part, and
the guide part partitions the first distribution part and the second distribution part and, when rotating, pumps a cooling medium distributed in the first distribution part and a cooling medium distributed in the second distribution part.

5 . The electric water pump of claim 4 , wherein the motor is provided with a driving shaft, and
the driving shaft penetrates through the upper portion of the case and the body part of the impeller to be rotatably supported by the cover, and the body part of the impeller is coupled to the driving shaft and rotates together.

6 . The electric water pump of claim 4 , wherein the guide part of the impeller includes a partition wall part that extends to an outer side of the body part and partitions the first distribution part and the second distribution part, and a wing part that extends upward and downward from the partition wall part and is located in the first distribution part and the second distribution part.

7 . The electric water pump of claim 6 , wherein the guide part is provided with a rim part extending upward and downward at an end of the partition wall part, and the wing part is formed to be connected to the rim part.

8 . The electric water pump of claim 7 , wherein a first recess part in which the rim part is located on the outer side of the first distribution part is formed in the case, a second recess part in which the rim part is located on the outer side of the second distribution part is formed in the cover, and the first recess part and the second recess part match each other.

9 . The electric water pump of claim 6 , wherein the plurality of wing parts are formed along the partition wall part, and extend obliquely from the partition wall part.

10 . An electric water pump, comprising:
a housing partitioned into a distribution space where fluid is distributed and a driving space into which a motor is built, the distribution space having a plurality of inlets and outlets communicating with an outside; and an impeller provided in the distribution space of the housing and connected to the motor to rotate, formed so that the distribution space is partitioned for each inlet and outlet that communicate with each other among the plurality of inlets and outlets, and pumping the fluid to each inlet and outlet when rotating by driving of the motor, wherein the housing is separately composed of a case and a cover, an upper portion of the case is opened upward to form a portion of the distribution space, and form a driving space with the built-in motor at a lower side, and a lower portion of the cover is opened to form the rest of the distribution space and is coupled to an upper portion of the case, wherein the distribution space is partitioned into a first distribution part on the case side and a second distribution part on the cover side by the impeller, wherein the impeller includes a body part connected to the motor, and a guide part that rotates with the body part in the first distribution part and the second distribution part, and the guide part partitions the first distribution part and the second distribution part and, when rotating, pumps a cooling medium distributed in the first distribution part and a cooling medium distributed in the second distribution part.

Assignees

• Coavis

Inventors

• Lee Hyun Tae
• Lee Woo Keun

Classifications

• F04D29/445

  especially adapted for liquid pumps · CPC title

• F04D25/16

  Combinations of two or more pumps {; Producing two or more separate gas flows} · CPC title

• F04D1/006

  double suction pumps · CPC title

• F04D17/162

  Double suction pumps · CPC title

• F04D13/14

  the pumps being all of centrifugal type {(deviation valves F04D15/0016)} · CPC title