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Patent Searching and Data


Title:
PUMP WITH IMPELLER MADE FROM SHEET METAL
Document Type and Number:
Japanese Patent JP2010031738
Kind Code:
A
Abstract:

To provide an impeller made from a sheet metal capable of improving a blade molding property of the impeller achieving high performance and balancing strength reliability and welding property of the impeller at the same time.

In the pump provided with a rotation shaft, the impeller made from the sheet metal consisting of hub mounted to the rotation shaft and blades arranged for an outer circumference of this hub, a suction casing for introducing fluid to the impeller and a discharge casing consisting of an outer circumferential discharge casing and an inner circumferential discharge for introducing the fluid discharged from the impeller, the impeller is structured as follows; the blades of the impeller are separated in a direction from an impeller inlet to an outlet and suction side blades of the separated blades are molded by mold-bending and discharge side blades of the separated blades are defined in a perfect two-dimensional form and molded by linear bending with a roll and the blades are respectively arranged to a hub at its sucking side and discharge side in tandem and welded.


Inventors:
HIRADATE SUMIMASA
TANAKA TEIJI
CHIBA YOSHIMASA
SHIMIZU ISATO
NAGAI YUJI
IRIE KOICHI
Application Number:
JP2008000194544
Publication Date:
February 12, 2010
Filing Date:
July 29, 2008
Export Citation:
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Assignee:
HITACHI PLANT TECHNOLOGIES LTD
International Classes:
F04D29/30; F04D11/00; F04D29/38
Attorney, Agent or Firm:
ポレール特許業務法人