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Patent Searching and Data


Title:
PUMP UNIT
Document Type and Number:
Japanese Patent JP2017145830
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a space-saving pump unit enabling a variable speed operation control to be carried out by a single pump unit while performing a positive heat radiation.SOLUTION: This invention relates to a pump unit in which a pump part arranged in a pump casing to have an impeller and a rotating motor for rotationally driving the impeller are integrally assembled and the rotating motor comprises a housing having a plurality of cooling fins at its outer periphery, a stator fixed to the housing, a rotor fixed to a rotating shaft of the rotating motor and constituted to have a plurality of permanent magnets arranged in a cylindrical shape, a bearing for supporting the rotating shaft, an end bracket to which the bearing is fixed, a fan fixed to an end part of the end bracket opposite to that of the side to which the pump part is fixed, a cover covering the housing, an electrical power converter device fixed to a part of the housing, and a control board fixed to the other part of the housing.SELECTED DRAWING: Figure 2

Inventors:
TOMITA TOSHIO
OKAFUJI HIROSHI
TAKAHASHI SHINICHI
FUJITA YUKIHISA
Application Number:
JP2017083309A
Publication Date:
August 24, 2017
Filing Date:
April 20, 2017
Export Citation:
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Assignee:
HITACHI INDUSTRY EQUIPMENT SYSTEMS CO LTD
International Classes:
F04D15/00
Domestic Patent References:
JP2009041500A2009-02-26
JP2000145651A2000-05-26
JP2009278809A2009-11-26
JP2009278811A2009-11-26
JP2007120497A2007-05-17
JP2004100624A2004-04-02
JPH0574168U1993-10-08
Attorney, Agent or Firm:
Yuji Toda