Axial gap type motor and water pump using same
AssigneeAmotech Co., Ltd.
InventorByung Soo Kim
Life of this patent
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Abstract
Provided is an axial gap type motor employing a non-rare earth magnet, and a water pump using same. The axial gap type motor for a water pump (EWP) comprises: a rotor rotatably supported on a fluid flow passage between a pump cover and a body case; a stator arranged in a lower space formed by the body case and an upper cover, so as to generate a rotating magnetic field, thereby rotating the rotor; and a partition arranged on the body case in order to separate the rotor from the stator. The rotor can use a ferrite magnet, which is a non-rare earth magnet.
Claims9
An axial gap type motor for an electric water pump (EWP) with an impeller consisting of:
- a rotor rotatably supported inside a fluid flow passage between a pump cover and a body case, the impeller being disposed inside the fluid flow passage, the body case having a cylindrical portion and a partition;
- and
- a stator arranged in a lower space formed by the body case and an upper cover, and generating a rotating magnetic field to rotatably drive the rotor,
- wherein the rotor is integrally formed on a lower side of the impeller and rotatably supported by a support shaft having one end supported on the partition, the rotor is formed of a ring-shaped back yoke and a magnet installed on a bottom surface of the ring-shaped back yoke, and the magnet is configured to be in contact with a fluid flowing the fluid flow passage,
- wherein the partition is arranged on top of the body case to separate between the rotor and the stator, and
- wherein the partition is integrally formed with the body case and has a thickness smaller than that of the cylindrical portion of the body case.
Dependencies are inferred from the claim text.