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
Links
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
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.
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)
| 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)
| 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 |
-
1973
- 1973-07-03 DK DK368973AA patent/DK139989B/en unknown
-
1974
- 1974-06-28 FI FI2001/74A patent/FI54735C/en active
- 1974-06-28 SE SE7408578A patent/SE418415B/en not_active IP Right Cessation
- 1974-06-28 GB GB2871774A patent/GB1470254A/en not_active Expired
- 1974-06-28 CH CH896974A patent/CH576589A5/xx not_active IP Right Cessation
- 1974-07-01 DE DE2431544A patent/DE2431544C2/en not_active Expired
- 1974-07-02 AT AT544374A patent/AT337007B/en not_active IP Right Cessation
- 1974-07-02 IT IT69106/74A patent/IT1014444B/en active
- 1974-07-02 NL NLAANVRAGE7408962,A patent/NL179672C/en not_active IP Right Cessation
- 1974-07-02 NO NO742405A patent/NO142362C/en unknown
- 1974-07-03 FR FR7423150A patent/FR2245862B1/fr not_active Expired
- 1974-07-03 BE BE146171A patent/BE817201A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| CH576589A5 (en) | 1976-06-15 |
| NL7408962A (en) | 1975-01-07 |
| NL179672B (en) | 1986-05-16 |
| DE2431544C2 (en) | 1986-04-17 |
| DK368973A (en) | 1975-03-10 |
| DK139989B (en) | 1979-05-28 |
| NL179672C (en) | 1986-10-16 |
| DE2431544A1 (en) | 1975-01-23 |
| FI200174A (en) | 1975-01-04 |
| FR2245862B1 (en) | 1978-02-17 |
| NO142362C (en) | 1980-08-06 |
| NO742405L (en) | 1975-01-27 |
| AT337007B (en) | 1977-06-10 |
| FR2245862A1 (en) | 1975-04-25 |
| GB1470254A (en) | 1977-04-14 |
| FI54735B (en) | 1978-10-31 |
| ATA544374A (en) | 1976-09-15 |
| IT1014444B (en) | 1977-04-20 |
| DK139989C (en) | 1983-10-31 |
| NO142362B (en) | 1980-04-28 |
| BE817201A (en) | 1975-01-03 |
| SE418415B (en) | 1981-05-25 |
| FI54735C (en) | 1979-02-12 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NUG | Patent has lapsed |
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