GB1259528A - - Google Patents
Info
- Publication number
- GB1259528A GB1259528A GB1259528DA GB1259528A GB 1259528 A GB1259528 A GB 1259528A GB 1259528D A GB1259528D A GB 1259528DA GB 1259528 A GB1259528 A GB 1259528A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pump
- pumps
- outlet
- flow
- assembly
- 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.)
- Expired
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
- F04D13/00—Pumping installations or systems
- F04D13/12—Combinations of two or more pumps
- F04D13/14—Combinations of two or more pumps the pumps being all of centrifugal type
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
1,259,528. Centrifugal pumps. J. OPLANDER Nov.11, 1969 [Nov. 12, 1968], No.55169/69. Heading F1C. A pump assembly, e. g. for central heating systems, comprises two separately-driven pumps 4, 5, Fig. 1, mounted in a common casing 1 having an inlet 2 and an outlet 3. The pumps may be operated independently or simultaneously and each is associated with means at its outlet 8 or 9 for preventing backflow in the main flow duct 1a when the respective pump is operative. In the embodiment shown, the means comprises a flap valve 10 or 11 movable into one of two positions by the discharge flow from the associated pump or by the flow through the adjacent portion of the duct 1a when the pump is inoperative. In an alternative embodiment, Fig. 2 (not shown), the backflowpreventing means comprises an ejector-type pump (16, 18 or 17, 19). Operation of the pumps 4, 5 may be controlled manually or automatically, e. g. by a timer device and/or in accordance with the quantity of flow through the assembly or with the pressure differential across the inlet and outlet of the assembly.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19681808411 DE1808411C3 (en) | 1968-11-12 | 1968-11-12 | PUMP UNIT OF TWO CENTRIFUGAL PUMPS ARRANGED IN A HOUSING |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1259528A true GB1259528A (en) | 1972-01-05 |
Family
ID=5713089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1259528D Expired GB1259528A (en) | 1968-11-12 | 1969-11-11 |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US3602611A (en) |
| AT (1) | AT295798B (en) |
| BE (1) | BE741398A (en) |
| CH (1) | CH497648A (en) |
| DE (1) | DE1808411C3 (en) |
| ES (1) | ES373403A1 (en) |
| FR (1) | FR2023098A1 (en) |
| GB (1) | GB1259528A (en) |
| NL (1) | NL6916949A (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3985094A (en) * | 1976-02-20 | 1976-10-12 | The United States Of America As Represented By The Secretary Of The Navy | Series waterjet propulsion pumps for marine vehicles |
| FR2415732A1 (en) * | 1978-01-25 | 1979-08-24 | Commissariat Energie Atomique | Nuclear reactor coolant circuit with parallel pumps - has common converging and diverging portion downstream of pumps preventing flow reversal |
| US4548263A (en) * | 1984-03-14 | 1985-10-22 | Woods Billy E | Fitting for dual submersible pumps |
| US5385453A (en) * | 1993-01-22 | 1995-01-31 | Copeland Corporation | Multiple compressor in a single shell |
| US5404943A (en) * | 1994-03-29 | 1995-04-11 | Strawn; Wesley O. | Multiple pump assembly for wells |
| DE29916897U1 (en) * | 1999-09-24 | 2000-01-20 | Reich Kg Regel & Sicherheits | Submersible pump |
| US20060204384A1 (en) * | 2004-09-03 | 2006-09-14 | Cornell Donald E | Water cannon |
| FR2893092B1 (en) * | 2005-11-08 | 2008-10-10 | Koyo Hpi Soc Par Actions Simpl | ELECTRO-PUMP GROUP, OF THE TYPE COMPRISING AT LEAST ONE HYDRAULIC PUMP, IN PARTICULAR A GEAR, DRIVEN IN ROTATION BY A MOTOR DEVICE |
| DE102011109943A1 (en) * | 2011-08-10 | 2013-02-14 | Airbus Operations Gmbh | Pressure supply for a water system |
| DE102011116957A1 (en) | 2011-10-26 | 2013-05-02 | Vaillant Gmbh | Multiple coaxial pump |
| CN102606445A (en) * | 2012-02-14 | 2012-07-25 | 晋州市水泵厂 | Dual-pump type variable-frequency submersible pump |
| TWI602994B (en) * | 2016-01-27 | 2017-10-21 | 訊凱國際股份有限公司 | Heat exchange module and serial pump thereof |
| DE102019111980A1 (en) * | 2019-05-08 | 2020-11-12 | Rapa Automotive Gmbh & Co. Kg | POWER SUPPLY UNIT FOR ACTIVE SUSPENSION SYSTEM |
-
1968
- 1968-11-12 DE DE19681808411 patent/DE1808411C3/en not_active Expired
-
1969
- 1969-10-31 AT AT1025169A patent/AT295798B/en not_active IP Right Cessation
- 1969-11-04 CH CH1641669A patent/CH497648A/en not_active IP Right Cessation
- 1969-11-07 BE BE741398D patent/BE741398A/xx unknown
- 1969-11-11 NL NL6916949A patent/NL6916949A/xx unknown
- 1969-11-11 ES ES373403A patent/ES373403A1/en not_active Expired
- 1969-11-11 GB GB1259528D patent/GB1259528A/en not_active Expired
- 1969-11-12 US US875639A patent/US3602611A/en not_active Expired - Lifetime
- 1969-11-12 FR FR6938763A patent/FR2023098A1/fr not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| CH497648A (en) | 1970-10-15 |
| FR2023098A1 (en) | 1970-08-07 |
| US3602611A (en) | 1971-08-31 |
| NL6916949A (en) | 1970-05-14 |
| BE741398A (en) | 1970-04-16 |
| ES373403A1 (en) | 1972-02-01 |
| DE1808411A1 (en) | 1970-06-25 |
| DE1808411B2 (en) | 1973-02-01 |
| AT295798B (en) | 1972-01-25 |
| DE1808411C3 (en) | 1973-08-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |