JPS55112899A - Pump having high specific speed - Google Patents

Pump having high specific speed

Info

Publication number
JPS55112899A
JPS55112899A JP1979579A JP1979579A JPS55112899A JP S55112899 A JPS55112899 A JP S55112899A JP 1979579 A JP1979579 A JP 1979579A JP 1979579 A JP1979579 A JP 1979579A JP S55112899 A JPS55112899 A JP S55112899A
Authority
JP
Japan
Prior art keywords
counter current
suction
vane wheel
vane
rate range
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP1979579A
Other languages
Japanese (ja)
Inventor
Sumio Sudo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP1979579A priority Critical patent/JPS55112899A/en
Publication of JPS55112899A publication Critical patent/JPS55112899A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To reduce axial power by arranging, only on the outer peripheral side on the suction side of a vane wheel, movable vanes whose angles are varied by the force of flowing water and suppressing the counter current generated in low flow- rate range operation.
CONSTITUTION: When a pump is driven, in a low flow-rate range, counter current is generated close to the outer periphery on the vane wheel suction side, and flows into a vane wheel with a large swirling component, so movable vanes 5 are directed in the same direction by the counter current described above. Accordingly, the movable vane 5 acts to throttle the diameter of the suction passage and cuts 11 the transmission of the counter current to the upper stream side. Accordingly, as the movable vane 5 automatically throttles the suction flow passage due to the action of the counter current, in the low flow-rate range in which counter current is generated on the suction side of a vane wheel 1, the counter current is not transmitted to the upper stream side, and the power loss accompained by the counter current is reduced remarkably.
COPYRIGHT: (C)1980,JPO&Japio
JP1979579A 1979-02-23 1979-02-23 Pump having high specific speed Pending JPS55112899A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1979579A JPS55112899A (en) 1979-02-23 1979-02-23 Pump having high specific speed

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1979579A JPS55112899A (en) 1979-02-23 1979-02-23 Pump having high specific speed

Publications (1)

Publication Number Publication Date
JPS55112899A true JPS55112899A (en) 1980-09-01

Family

ID=12009272

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1979579A Pending JPS55112899A (en) 1979-02-23 1979-02-23 Pump having high specific speed

Country Status (1)

Country Link
JP (1) JPS55112899A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4761115A (en) * 1986-03-19 1988-08-02 Standard Elektrik Lorenz Ag Axial-flow fan
RU2581748C2 (en) * 2014-03-06 2016-04-20 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Воронежский государственный технический университет" Propeller pump

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4761115A (en) * 1986-03-19 1988-08-02 Standard Elektrik Lorenz Ag Axial-flow fan
RU2581748C2 (en) * 2014-03-06 2016-04-20 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Воронежский государственный технический университет" Propeller pump

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