SE7408578L - - Google Patents

Info

Publication number
SE7408578L
SE7408578L SE7408578A SE7408578A SE7408578L SE 7408578 L SE7408578 L SE 7408578L SE 7408578 A SE7408578 A SE 7408578A SE 7408578 A SE7408578 A SE 7408578A SE 7408578 L SE7408578 L SE 7408578L
Authority
SE
Sweden
Prior art keywords
piston
inlet
impeller
spring
discharge duct
Prior art date
Application number
SE7408578A
Other languages
Unknown language ( )
Other versions
SE418415B (en
Inventor
L I Rassmussen
Original Assignee
Smegaard T As
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 Smegaard T As filed Critical Smegaard T As
Publication of SE7408578L publication Critical patent/SE7408578L/
Publication of SE418415B publication Critical patent/SE418415B/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
    • F04D15/0027—Varying behaviour or the very pump
    • F04D15/0038—Varying behaviour or the very pump by varying the effective cross-sectional area of flow through the rotor

Landscapes

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

Abstract

1470254 Centrifugal pumps T SMEDEGAARD AS 28 June 1974 [3 July 1973] 28717/74 Heading F1C A centrifugal pump comprises a movable valve sleeve 18 having an obturating band 18a for gradually shutting off the outlet of the impeller 17 from the discharge duct 16 and a skirt 19 having ports 19a for providing a by-pass between the discharge duct and the inlet 15, the sleeve being connected to a piston 23 which is subjected on opposite sides to the discharge and inlet pressures and also connected to a tension spring 22 which opposes the net force on the piston. The space above the piston 23 communicates with the inlet 15 via one or more ducts 25. In another embodiment, the piston is below the impeller, and the spring may be a compression spring.
SE7408578A 1973-07-03 1974-06-28 CENTRIFUGAL PUMP WITH PUMP CAPACITY CONTROL MECHANISM SE418415B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK368973AA DK139989B (en) 1973-07-03 1973-07-03 Centrifugal pump with control mechanism.

Publications (2)

Publication Number Publication Date
SE7408578L true SE7408578L (en) 1975-01-07
SE418415B SE418415B (en) 1981-05-25

Family

ID=8125696

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7408578A SE418415B (en) 1973-07-03 1974-06-28 CENTRIFUGAL PUMP WITH PUMP CAPACITY CONTROL MECHANISM

Country Status (12)

Country Link
AT (1) AT337007B (en)
BE (1) BE817201A (en)
CH (1) CH576589A5 (en)
DE (1) DE2431544C2 (en)
DK (1) DK139989B (en)
FI (1) FI54735C (en)
FR (1) FR2245862B1 (en)
GB (1) GB1470254A (en)
IT (1) IT1014444B (en)
NL (1) NL179672C (en)
NO (1) NO142362C (en)
SE (1) SE418415B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE463041B (en) * 1985-11-26 1990-10-01 Stal Refrigeration Ab CONTROL DEVICE IN REFRIGERATOR AND HEAT PUMP SYSTEM CONTROL OIL PRESSURE AND FLOW TO AN OIL INJECTED COMPRESSOR WITH OIL SUPPLY ON HIGH PRESSURE SIDE
IT223506Z2 (en) * 1990-02-09 1995-07-20 Zanussi A Spa Industrie WASHING MACHINE WITH CENTRIFUGAL TYPE WATER CIRCULATION PUMP
DE102011018240A1 (en) 2011-04-19 2011-11-24 Tcg Unitech Systemtechnik Gmbh Radial pump has rotatable impeller in housing, where shut-off is directly or indirectly connected to pressure chamber through control valve
ITBS20130100A1 (en) * 2013-07-09 2015-01-10 Ind Saleri Italo Spa ADJUSTABLE COOLING PUMP FOR INTERNAL COMBUSTION ENGINE
CN111075774B (en) * 2019-12-24 2022-05-10 上海炳标环保科技有限公司 Adjustable injection air supplement pump

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE881306C (en) * 1941-10-28 1953-06-29 Voith Gmbh J M Centrifugal pump with split ring protection
US3070025A (en) * 1958-03-03 1962-12-25 Thompson Ramo Wooldridge Inc Injector discharge pressure regulator for pumps
GB853173A (en) * 1958-08-08 1960-11-02 Samuel Hopton Improvements in machines for the continuous mixing of fluids or solids
FR1409465A (en) * 1964-07-18 1965-08-27 Cem Comp Electro Mec Further training in blowers and similar rotating machines
US3504986A (en) * 1968-03-12 1970-04-07 Bendix Corp Wide range inducer

Also Published As

Publication number Publication date
FI54735B (en) 1978-10-31
FR2245862B1 (en) 1978-02-17
NL179672C (en) 1986-10-16
SE418415B (en) 1981-05-25
NL7408962A (en) 1975-01-07
NO142362B (en) 1980-04-28
FI54735C (en) 1979-02-12
DE2431544A1 (en) 1975-01-23
NO142362C (en) 1980-08-06
FR2245862A1 (en) 1975-04-25
GB1470254A (en) 1977-04-14
IT1014444B (en) 1977-04-20
CH576589A5 (en) 1976-06-15
DK139989B (en) 1979-05-28
AT337007B (en) 1977-06-10
FI200174A7 (en) 1975-01-04
ATA544374A (en) 1976-09-15
DK368973A (en) 1975-03-10
NO742405L (en) 1975-01-27
DK139989C (en) 1983-10-31
BE817201A (en) 1975-01-03
NL179672B (en) 1986-05-16
DE2431544C2 (en) 1986-04-17

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