Title:
FREE FLUID TYPE PUMP
Document Type and Number:
Japanese Patent JPS58104390
Kind Code:
A
Abstract:
The free-flow pump has an impeller housing (9, 10) laterally of its free flow chamber (4), and the impeller (6) is located in the impeller chamber (9, 10). The external, radial limiting member (10) of the impeller housing is drawn forwardly into the free flow chamber so as to decrease in the direction of rotation from the housing tongue (11) to the pressure pipe outlet. The limiting member (10) causes a constriction in the external portion (4') of the flow chamber, and such constriction decreases from the housing tongue towards the pressure pipe outlet. These measures permit the pump characteristics to be improved, and in particular the throttle characteristic of the free-flow pump can be stabilized.
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| JP2006283597 | ELECTRIC PUMP DEVICE |
Inventors:
RENGAA HAAGEN
Application Number:
JP21346382A
Publication Date:
June 21, 1983
Filing Date:
December 07, 1982
Export Citation:
Assignee:
EMIRU EGAA UNTO CO SA
International Classes:
F04D7/04; F04D29/22; (IPC1-7): F04D7/04
Domestic Patent References:
| JPS4713703A |
Attorney, Agent or Firm:
Hideto Asamura