WO2008096731A1 - Pump - Google Patents

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Publication number
WO2008096731A1
WO2008096731A1 PCT/JP2008/051823 JP2008051823W WO2008096731A1 WO 2008096731 A1 WO2008096731 A1 WO 2008096731A1 JP 2008051823 W JP2008051823 W JP 2008051823W WO 2008096731 A1 WO2008096731 A1 WO 2008096731A1
Authority
WO
WIPO (PCT)
Prior art keywords
flow rate
control
flowmeter
current value
exhaust flow
Prior art date
Application number
PCT/JP2008/051823
Other languages
French (fr)
Japanese (ja)
Inventor
Hirokazu Kishimoto
Original Assignee
Nidec Shibaura Corporation
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 Nidec Shibaura Corporation filed Critical Nidec Shibaura Corporation
Publication of WO2008096731A1 publication Critical patent/WO2008096731A1/en

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
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0066—Control, e.g. regulation, of pumps, pumping installations or systems by changing the speed, e.g. of the driving engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0088—Testing machines

Abstract

[PROBLEMS] To provide a reliable pump which can control a flow rate with a simple structure at a reasonable cost. [MEANS FOR SOLVING PROBLEMS] By referencing a current value-exhaust flow rate relationship (4000 rpm) (64) stored in a judgment reference storage unit (6), an exhaust flow rate is calculated from a detected current value obtained by a current value detection unit (3). A flow rate judging unit (53) judges whether the obtained exhaust flow rate is a predetermined set flow rate (10L/min). According to the result of the judgment, the rpm of a motor is controlled so as to control the exhaust flow rate. Accordingly, there is no need of expensive parts such as a flowmeter or a pressure detector which have been conventionally required. Thus, it is possible to control a flow rate with a simple structure at a reasonable cost. Furthermore, since no flowmeter or no pressure detector is used, there is no danger of a pump failure caused by clogging of a flowmeter or a pressure detector with foreign matters. That is, it is possible to perform a highly reliable flow rate control.
PCT/JP2008/051823 2007-02-05 2008-02-05 Pump WO2008096731A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-025094 2007-02-05
JP2007025094A JP2008190401A (en) 2007-02-05 2007-02-05 Pump

Publications (1)

Publication Number Publication Date
WO2008096731A1 true WO2008096731A1 (en) 2008-08-14

Family

ID=39681640

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/051823 WO2008096731A1 (en) 2007-02-05 2008-02-05 Pump

Country Status (2)

Country Link
JP (1) JP2008190401A (en)
WO (1) WO2008096731A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015144310A1 (en) * 2014-03-26 2015-10-01 Wilo Se Method for determining the hydraulic operating point of a pump assembly

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5491657B1 (en) * 2013-05-11 2014-05-14 株式会社マツサカエンジニアリング Pump device
JP7293712B2 (en) * 2019-02-22 2023-06-20 Toto株式会社 flush toilet device
JP7270897B2 (en) * 2019-02-22 2023-05-11 Toto株式会社 flush toilet device
JP7421728B2 (en) 2020-02-28 2024-01-25 Toto株式会社 Flush toilet device
JP7421727B2 (en) 2020-02-28 2024-01-25 Toto株式会社 Flush toilet device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08270595A (en) * 1995-04-03 1996-10-15 Ntn Corp Magnetic levitation pump
JPH1176394A (en) * 1997-09-05 1999-03-23 Terumo Corp Centrifugal liquid pumping device
JP2003021091A (en) * 2001-07-03 2003-01-24 Nikkiso Co Ltd Flow control device of centrifugal pump
JP2003062065A (en) * 2001-08-29 2003-03-04 Senko Medical Instr Mfg Co Ltd Device for driving centrifugal pump

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08270595A (en) * 1995-04-03 1996-10-15 Ntn Corp Magnetic levitation pump
JPH1176394A (en) * 1997-09-05 1999-03-23 Terumo Corp Centrifugal liquid pumping device
JP2003021091A (en) * 2001-07-03 2003-01-24 Nikkiso Co Ltd Flow control device of centrifugal pump
JP2003062065A (en) * 2001-08-29 2003-03-04 Senko Medical Instr Mfg Co Ltd Device for driving centrifugal pump

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015144310A1 (en) * 2014-03-26 2015-10-01 Wilo Se Method for determining the hydraulic operating point of a pump assembly
US10184476B2 (en) 2014-03-26 2019-01-22 Wilo Se Method of determining hydraulic operating point of a pump

Also Published As

Publication number Publication date
JP2008190401A (en) 2008-08-21

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