JPS57195898A - Centrifugal pump with inclined open impeller - Google Patents

Centrifugal pump with inclined open impeller

Info

Publication number
JPS57195898A
JPS57195898A JP7923381A JP7923381A JPS57195898A JP S57195898 A JPS57195898 A JP S57195898A JP 7923381 A JP7923381 A JP 7923381A JP 7923381 A JP7923381 A JP 7923381A JP S57195898 A JPS57195898 A JP S57195898A
Authority
JP
Japan
Prior art keywords
impeller
blade
passage
force
gap
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
JP7923381A
Other languages
Japanese (ja)
Inventor
Tomoyoshi Okamura
Yasumasa Nakawa
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 JP7923381A priority Critical patent/JPS57195898A/en
Publication of JPS57195898A publication Critical patent/JPS57195898A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/18—Rotors
    • F04D29/22—Rotors specially for centrifugal pumps
    • F04D29/2261—Rotors specially for centrifugal pumps with special measures

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

PURPOSE:To suppress leakage by making the angle between the shaft center and the side face of the open side of the meridian plane passage of an impeller less than 90 deg. and applying a component of the centrifugal force generated by revolutions of the impeller to the particles flowing in a gap between the impeller and a casing in the direction of the blade passage. CONSTITUTION:The angle theta(8) formed between the axis 1a of the side face of the open side of an impeller 1 and the rotary shaft center line 7 is made 90 deg.. A centrifugal force 10 is applied to the particles 9 near the blades flowing through a gap between the impeller 1 and a casing 2 due to the viscosity by revolutions of the blades. Then, if the centrifugal force 10 is divided into the component force 11 in the meridian plane direction of the blade and the component force 12 in the vertical direction to the side face of the blade, the component force 12 is directed toward the blade passage. That is, the flow through the gap 6 is applied with a force enforcing it into the impeller passage. Thereby, leakage is reduced and the pump efficiency can be improved.
JP7923381A 1981-05-27 1981-05-27 Centrifugal pump with inclined open impeller Pending JPS57195898A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7923381A JPS57195898A (en) 1981-05-27 1981-05-27 Centrifugal pump with inclined open impeller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7923381A JPS57195898A (en) 1981-05-27 1981-05-27 Centrifugal pump with inclined open impeller

Publications (1)

Publication Number Publication Date
JPS57195898A true JPS57195898A (en) 1982-12-01

Family

ID=13684153

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7923381A Pending JPS57195898A (en) 1981-05-27 1981-05-27 Centrifugal pump with inclined open impeller

Country Status (1)

Country Link
JP (1) JPS57195898A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009057894A (en) * 2007-08-31 2009-03-19 Nidec Sankyo Corp Pumping device and washing machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009057894A (en) * 2007-08-31 2009-03-19 Nidec Sankyo Corp Pumping device and washing machine

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