Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
PRESSURIZING CENTRIFUGAL PUMP
Document Type and Number:
WIPO Patent Application WO/2005/098239
Kind Code:
A1
Abstract:
A pressurizing centrifugal pump for scraping a fluid from a pressurizing chamber into a blade chamber by forming a blade forward inclination angle and a blade outside forward inclination angle on blades projectedly installed backwardly aslant in the radial direction of a blade plate and a boss part and feeding out the fluid while restricting the leakage and movement of the fluid in the blade chamber to the side. In the pressurizing centrifugal pump, a pressurizing part (16) having a pressurizing surface (36) and a pressurizing partition wall (35) forming a pressurizing chamber (33) is formed oppositely to the blades (19) of an impeller (5) in a drum-shaped case (4) having an inlet (2) and an outlet (3). The blade surface (5a) of the blades (19) is installed projectedly with the gentle blade forward inclination angle (Ѳ) from the blade plate (26) in plan view, and a blade outside surface (5b) shifted from the roughly intermediate part of the blade surface (5a) to the blade outer side is formed by bending with the blade outside forward inclination angle (&agr ) which is steeper than the blade forward inclination angle (Ѳ).

Inventors:
YONEHARA RYOICHI (JP)
Application Number:
PCT/JP2005/004615
Publication Date:
October 20, 2005
Filing Date:
March 16, 2005
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
YONEHARA GIKEN CO LTD (JP)
YONEHARA RYOICHI (JP)
International Classes:
F04D1/00; F04D5/00; F04D7/02; F04D31/00; F04D29/24; F04D29/42; F04D29/44; (IPC1-7): F04D29/24; F04D1/00; F04D7/02
Foreign References:
JP2004060470A2004-02-26
JP2002089477A2002-03-27
JP2574653B21997-01-22
Other References:
See also references of EP 1739310A4
Attorney, Agent or Firm:
Nagata, Yoshiaki (6-2 Chaya-machi, Kita-k, Osaka-shi Osaka, JP)
Download PDF: