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Patent Searching and Data


Title:
FLUID FEEDING DEVICE
Document Type and Number:
WIPO Patent Application WO/2008/056484
Kind Code:
A1
Abstract:
Provided is a fluid feeding device for preventing the outer circumference of a rotor from being corroded with rust or the like and for eliminating dust such as iron powder when the dust sticks to the outer circumference of the rotor. The fluid feeding device, in which a fluid is sucked from an intake port (11) formed in a pump casing (10) and is discharged from a discharge port (12) by rotating an impeller (13) through a pump drive shaft (2) by an electric motor (M) constituted of a rotor (3) and a stator coil (4). The outer circumference of the rotor has its outer circumference subjected to a corrosion-resisting surface treatment, a mold-releasing surface treatment or a corrosion-resisting/mold-releasing surface treatment. The fluid feeding device includes a dust discharge passage (S) leading from a rotor housing chamber (50) of a partition (5) partitioning the rotor and stator coil in a sealed state to the inside of the pump casing, and dust sending means (an oblique groove (30), a tank (6) and a fluid supply device (7)) for sending the dust having stuck to the rotor, toward the dust discharge passage.

Inventors:
ICHIMARU HIRONOBU (JP)
YOSHIMI NAOFUMI (JP)
Application Number:
PCT/JP2007/067574
Publication Date:
May 15, 2008
Filing Date:
September 10, 2007
Export Citation:
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Assignee:
ICHIMARU GIKEN CO LTD (JP)
ICHIMARU HIRONOBU (JP)
YOSHIMI NAOFUMI (JP)
International Classes:
F04D13/06; F04D13/16
Foreign References:
JPH0688593A1994-03-29
JP2000145683A2000-05-26
JPH0577595U1993-10-22
JPS6010892U1985-01-25
JPS5017042Y11975-05-27
JPH08200277A1996-08-06
JP2000316248A2000-11-14
JP2003003984A2003-01-08
Attorney, Agent or Firm:
HIRATA, Yoshinori (Nishizin 1-Chome Sawara-k, Fukuoka-shi Fukuoka 02, JP)
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