Title:
流体機械
Document Type and Number:
Japanese Patent JP5339565
Kind Code:
B2
Abstract:
The present invention provides a rotary-type fluid machine which enables practical and effective operation in an extremely low specific speed range. The rotary-type fluid machine (1, 1') has an impeller (10, 10') integrally connected to a rotating drive shaft (2). The impeller is accommodated in a casing (3). Fluid (a) of a suction fluid passage (4) to be pumped flows into a center part (11) of the impeller. The fluid (b) is discharged from a peripheral portion (12) of the impeller by the effect of the centrifugal force of the rotating impeller, so that the fluid is delivered through a delivery fluid passage (5) outside of the casing. Many grooves (15) extending toward a peripheral edge of the impeller from the center part of the impeller are formed on the impeller. The groove opens on an outer circumferential surface (18) of the impeller, and causes strong recirculation vortices (R) to be formed in the vicinity of the peripheral edge of the impeller when the impeller rotates.
Inventors:
Junichi Kurokawa
Shusaku Kagawa
Shusaku Kagawa
Application Number:
JP2009551458A
Publication Date:
November 13, 2013
Filing Date:
January 14, 2009
Export Citation:
Assignee:
National University Corporation Yokohama National University
International Classes:
F04D29/22; F04D23/00; F04D29/42
Domestic Patent References:
| JPH07509156A | 1995-10-12 | |||
| JP2005023794A | 2005-01-27 | |||
| JPH01501645A | 1989-06-08 | |||
| JPH0319489U | 1991-02-26 | |||
| JP2005270345A | 2005-10-06 |
Attorney, Agent or Firm:
Yoshihiko Shimazoe