DE4303839A1 - Centrifugal pump with two outlet channels and a reversing valve - Google Patents
Centrifugal pump with two outlet channels and a reversing valveInfo
- Publication number
- DE4303839A1 DE4303839A1 DE4303839A DE4303839A DE4303839A1 DE 4303839 A1 DE4303839 A1 DE 4303839A1 DE 4303839 A DE4303839 A DE 4303839A DE 4303839 A DE4303839 A DE 4303839A DE 4303839 A1 DE4303839 A1 DE 4303839A1
- Authority
- DE
- Germany
- Prior art keywords
- centrifugal pump
- outlet
- end position
- reversing valve
- pump according
- 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.)
- Withdrawn
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
- F04D15/0005—Control, e.g. regulation, of pumps, pumping installations or systems by using valves
- F04D15/0016—Control, e.g. regulation, of pumps, pumping installations or systems by using valves mixing-reversing- or deviation valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
-
- 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
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/46—Fluid-guiding means, e.g. diffusers adjustable
- F04D29/48—Fluid-guiding means, e.g. diffusers adjustable for unidirectional fluid flow in reversible pumps
- F04D29/486—Fluid-guiding means, e.g. diffusers adjustable for unidirectional fluid flow in reversible pumps especially adapted for liquid pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
Die Erfindung betrifft eine Kreiselpumpe mit einem von der Pumpenkammer ausgehenden Auslaß, der in zwei Auslaßkanäle verzweigt, wobei in der Abzweigstelle ein Umsteuerventil angeordnet ist, das abwechselnd einen Auslaßkanal öffnet und den anderen Auslaßkanal schließt.The invention relates to a centrifugal pump with one of the Pump chamber outgoing outlet, which in two outlet channels branches, with a reversing valve in the branch is arranged, which alternately opens an outlet channel and closes the other outlet duct.
Es ist in der Heizungstechnik bekannt, durch Umsteuerventile die Strömungsrichtung zu verändern. Dies geschieht durch Umsteuerventile, die durch einen Motor, Magnet, hydraulisch oder von Hand umgestellt werden. Diese Ventile erfordern einen zusätzlichen Impuls, damit es zu einem Umschalten kommt.It is known in heating technology by Reversing valves to change the flow direction. This happens through reversing valves that are driven by an engine, Can be changed magnetically, hydraulically or by hand. This Valves require an additional impulse for it to a switch comes.
Ferner ist es bekannt, bei Doppelpumpen Klappenventile anzuordnen, die durch die Strömung geöffnet bzw. geschlossen werden. Ferner ist es bekannt, die Strömungsrichtung durch Drehrichtungsänderung der Pumpe vorzunehmen. Hierbei werden hohe Wirkungsgradverluste in Kauf genommen, da das Laufrad nahezu gerade Schaufeln aufweisen muß und eine Spirale in der Pumpenkammer nicht für beide Drehrichtungen vorgesehen werden kann.It is also known for double pumps to have flap valves to be arranged that are opened by the flow or getting closed. It is also known that Flow direction by changing the direction of rotation of the pump to make. This results in high efficiency losses accepted because the impeller is almost straight blades must have and a spiral in the pump chamber not can be provided for both directions of rotation.
Aufgabe der Erfindung ist es, eine Pumpe zu schaffen, deren an beiden Ausgängen vorgesehenes Umsteuerventil selbsttätig durch die Pumpe umstellbar ist.The object of the invention is to provide a pump their reversing valve provided at both outputs is automatically convertible by the pump.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß bei einem Druckabfall im Auslaß auf einen Wert von etwa Null oder auf einen negativen Wert (Sog) das Umsteuerventil selbsttätig umschaltet.This object is achieved in that at a pressure drop in the outlet to a value of about Zero or to a negative value (suction) that Reversing valve switches over automatically.
Bei einer solchen Pumpe wird das Umsteuerventil durch die Pumpe selber verstellt, d. h. es reicht aus, den Pumpendruck und/oder die Strömungsrichtung der Pumpe kurzzeitig zu verändern, um hierdurch das Umsteuerventil zu betätigen und danach die Pumpe in derselben Förderrichtung weiterarbeiten zu lassen. Der kurze Druckabfall und/oder die kurze Strömungsrichtungsänderung reicht aus, um das Umsteuerventil von der einen Stellung in die andere zu bringen, so daß die Förderung durch die Auslaßkanäle jeweils wechselt.With such a pump, the reversing valve is turned on the pump itself is adjusted, d. H. it is enough that Pump pressure and / or the flow direction of the pump to change briefly in order to change the reversing valve to operate and then the pump in the same Let the funding direction continue to work. The short Pressure drop and / or the brief change in flow direction is sufficient to change the reversing valve from one position to bring in the other so that the promotion by the outlet channels change each time.
Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen aufgeführt.Advantageous embodiments of the invention are in the Subclaims listed.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung in quer zur Laufradachse angeordneten Schnitten dargestellt und wird im folgenden näher beschrieben. Es zeigen: An embodiment of the invention is in the Drawing arranged transversely to the impeller axis Cuts shown and will be described in more detail below described. Show it:
Fig. 1 Den Pumpenbetrieb durch den linken Kanal bei geschlossenem rechten Kanal. Fig. 1 Pump operation through the left channel with the right channel closed.
Fig. 2 Ein Umschalten der Klappe durch kurzzeitige Drehrichtungsänderung oder Druckabfall. Fig. 2 Switching the flap by briefly changing the direction of rotation or pressure drop.
Fig. 3 Den Pumpenbetrieb durch den rechten Kanal bei geschlossenem linken Kanal und Fig. 3 Pump operation through the right channel with the left channel closed and
Fig. 4 ein Umschalten der Klappe durch kurzzeitige Drehrichtungsänderung bzw. Druckabfall. Fig. 4 switching the flap by briefly changing the direction of rotation or pressure drop.
Eine Kreiselpumpe weist ein Gehäuse 1 auf, in dessen Pumpenkammer 2 ein durch einen Elektromotor angetriebenes Laufrad 3 sich dreht. Das Laufrad 3 weist einen Einlaß 4 auf, durch den das zu pumpende Medium, insbesondere Heizungswasser von einem nicht dargestellten Saugstutzen angesaugt wird. Von der Pumpenkammer 2 wird die Flüssigkeit zu einem Auslaß 5 gefördert, der in zwei Auslaßkanäle 6, 7 verzweigt. An der Verzweigungsstelle 8 ist ein Ventil 9, insbesondere in Form eines Klappenventils angeordnet.A centrifugal pump has a housing 1 , in the pump chamber 2 of which an impeller 3 driven by an electric motor rotates. The impeller 3 has an inlet 4 through which the medium to be pumped, in particular heating water, is sucked in by a suction nozzle (not shown). The liquid is conveyed from the pump chamber 2 to an outlet 5 which branches into two outlet channels 6 , 7 . A valve 9 , in particular in the form of a flap valve, is arranged at the branching point 8 .
Das Ventilstellglied 10 (verschwenkbare Klappe) ist um eine Achse 11, insbesondere frei verschwenkbar. Das Ventilstellglied nimmt somit zwei Endstellungen ein, wobei in der Zeichnung in der rechten Endstellung der rechte Auslaßkanal verschlossen und der linke geöffnet und in der linken Endstellung der linke Auslaßkanal verschlossen und der rechte geöffnet ist.The valve actuator 10 (pivotable flap) can be pivoted about an axis 11 , in particular freely. The valve actuator thus assumes two end positions, in the drawing the right outlet channel being closed in the right end position and the left one being open and in the left end position the left outlet channel being closed and the right one being open.
Zum Verstellen des Ventilstellglieds in den beiden Endstellungen ist kein zusätzlicher Impuls von außen erforderlich, sondern allein durch eine kurzzeitige Änderung der Drehzahl des Pumpenlaufrades gelingt es, das Umsteuerventil von der einen Endstellung in die andere Endstellung und beim nächsten Mal zurück zu bewegen. Hierzu ist allein ein kurzzeitiger Druckabfall oder eine kurzzeitige Fließrichtungsänderung nötig. Um sicherzustellen, daß der Druckabfall, bzw. die Fließrichtungsänderung dazu führt, daß das Ventilstellglied nicht nur von der einen Endlage in eine Mittelstellung gelangt, sondern zumindest ein Stück darüberhinaus in Richtung der zweiten Endlage, sind zusätzliche hydraulische, pneumatische, elektrische und/oder mechanische Mittel vorgesehen. Diese können zumindest eine Feder, insbesondere eine Sprungfeder aufweisen, die dafür sorgt, daß das Ventilstellglied im wesentlichen nur zwei Stellungen einnehmen kann oder zumindest keine Mittelstellung. Besonders vorteilhaft ist auch eine Sprungfeder insbesondere ein Sprungwerk, das am Ventilstellglied, insbesondere an der Welle des Ventilstellglieds angeschlossen ist.To adjust the valve actuator in the two End positions is not an additional impulse from the outside required, but only by a short-term Changing the speed of the pump impeller succeeds in that Reversing valve from one end position to the other end position and next time back to move. There is only a brief drop in pressure or a brief change in flow direction is necessary. Around ensure that the pressure drop or Flow direction change leads to that Valve actuator not only from one end position to one Reaches the middle position, but at least a little furthermore in the direction of the second end position additional hydraulic, pneumatic, electrical and / or mechanical means are provided. these can at least one spring, in particular a spring have, which ensures that the valve actuator in can only assume two positions or at least no middle position. It is particularly advantageous also a spring, in particular a spring mechanism that Valve actuator, especially on the shaft of the Valve actuator is connected.
Eine weitere Alternative besteht darin, daß die Mittel einen hydraulischen Zylinder aufweisen, der das Ventilstellglied beaufschlagt und durch Drücke in der Pumpe und/oder am Auslaß/in den Auslaßkanälen betätigbar ist.Another alternative is that the funds have a hydraulic cylinder that Valve actuator acted upon and by pressures in the Pump and / or operable at the outlet / in the outlet channels is.
Claims (7)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4303839A DE4303839A1 (en) | 1993-02-10 | 1993-02-10 | Centrifugal pump with two outlet channels and a reversing valve |
DE59402687T DE59402687D1 (en) | 1993-02-10 | 1994-02-07 | Centrifugal pump with two outlet channels and a reversing valve |
EP94101841A EP0610866B1 (en) | 1993-02-10 | 1994-02-07 | Centrifugal pump with two outlet channels and a change-over valve |
KR1019940002489A KR100225915B1 (en) | 1993-02-10 | 1994-02-12 | Centrifugal pump with two outlet channels and a change-over valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4303839A DE4303839A1 (en) | 1993-02-10 | 1993-02-10 | Centrifugal pump with two outlet channels and a reversing valve |
Publications (1)
Publication Number | Publication Date |
---|---|
DE4303839A1 true DE4303839A1 (en) | 1994-08-11 |
Family
ID=6480052
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE4303839A Withdrawn DE4303839A1 (en) | 1993-02-10 | 1993-02-10 | Centrifugal pump with two outlet channels and a reversing valve |
DE59402687T Expired - Fee Related DE59402687D1 (en) | 1993-02-10 | 1994-02-07 | Centrifugal pump with two outlet channels and a reversing valve |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE59402687T Expired - Fee Related DE59402687D1 (en) | 1993-02-10 | 1994-02-07 | Centrifugal pump with two outlet channels and a reversing valve |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0610866B1 (en) |
KR (1) | KR100225915B1 (en) |
DE (2) | DE4303839A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016066485A1 (en) * | 2014-10-29 | 2016-05-06 | BSH Hausgeräte GmbH | Laundry-care appliance having a detergent-solution pump |
CN108603324A (en) * | 2016-02-10 | 2018-09-28 | Bsh家用电器有限公司 | Washings care appliance with lye pump |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100546415B1 (en) | 2004-06-25 | 2006-01-26 | 삼성전자주식회사 | Cascade wake-up circuit to prevent power noise in memory device |
CN103277340B (en) * | 2013-05-09 | 2015-11-18 | 江苏大学 | A kind of two-way spiral case for turbine pump and using method thereof |
GB2575066B (en) | 2018-06-27 | 2020-11-25 | Dyson Technology Ltd | A nozzle for a fan assembly |
GB2575064B (en) * | 2018-06-27 | 2021-06-09 | Dyson Technology Ltd | A nozzle for a fan assembly |
GB2575063B (en) * | 2018-06-27 | 2021-06-09 | Dyson Technology Ltd | A nozzle for a fan assembly |
GB2578617B (en) | 2018-11-01 | 2021-02-24 | Dyson Technology Ltd | A nozzle for a fan assembly |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE346415C (en) * | ||||
DE734284C (en) * | 1941-12-12 | 1943-04-12 | Bernh Draeger | Transfer pump with two or more pressure levels |
DE6607072U (en) * | 1968-01-26 | 1971-01-07 | Siemens Elektrogeraete Gmbh | CENTRIFUGAL PUMP |
DE8336073U1 (en) * | 1983-06-08 | 1985-07-04 | Mes S.A., Stabio | Pump with two optionally switchable pressure outlets, especially for systems on motor vehicles |
DE8620253U1 (en) * | 1985-08-01 | 1986-09-11 | Mes S.A., Stabio | Double feed pump |
DE8702092U1 (en) * | 1986-02-11 | 1987-08-20 | Lucas Electrical Electronics & Systems Ltd., Birmingham | Fluid pump |
DE3714127A1 (en) * | 1986-04-30 | 1987-11-05 | Maruko Keihoki Kk | CONVEYOR PUMP WITH SELECTABLE DIRECTION |
GB2199080A (en) * | 1986-12-09 | 1988-06-29 | Trico Folberth Ltd | Valve arrangement for a bi-directional rotary pump |
DE3209542C1 (en) * | 1982-03-16 | 1992-05-07 | Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart | Dishwashing machine |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB817802A (en) * | 1954-11-12 | 1959-08-06 | Gen Electric | Improvements relating to centrifugal pumps, particularly suitable for clothes washing machines |
FR1142593A (en) * | 1956-02-08 | 1957-09-19 | Guinard Pompes | Improvement in centrifugal pumps with two directions of rotation |
CH499018A (en) * | 1968-09-03 | 1970-11-15 | Troesch Hans A Dr Ing | Circulation pump for heating systems |
EP0460399B1 (en) * | 1990-05-04 | 1994-08-31 | Grundfos International A/S | Centrifugal pump and gasboiler including the same |
DE9013992U1 (en) * | 1990-10-08 | 1991-10-24 | Grundfos International A/S, Bjerringbro | Motor pump unit for circulation systems with two parallel circuits |
-
1993
- 1993-02-10 DE DE4303839A patent/DE4303839A1/en not_active Withdrawn
-
1994
- 1994-02-07 EP EP94101841A patent/EP0610866B1/en not_active Expired - Lifetime
- 1994-02-07 DE DE59402687T patent/DE59402687D1/en not_active Expired - Fee Related
- 1994-02-12 KR KR1019940002489A patent/KR100225915B1/en not_active IP Right Cessation
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE346415C (en) * | ||||
DE734284C (en) * | 1941-12-12 | 1943-04-12 | Bernh Draeger | Transfer pump with two or more pressure levels |
DE6607072U (en) * | 1968-01-26 | 1971-01-07 | Siemens Elektrogeraete Gmbh | CENTRIFUGAL PUMP |
DE3209542C1 (en) * | 1982-03-16 | 1992-05-07 | Bosch-Siemens Hausgeräte GmbH, 7000 Stuttgart | Dishwashing machine |
DE8336073U1 (en) * | 1983-06-08 | 1985-07-04 | Mes S.A., Stabio | Pump with two optionally switchable pressure outlets, especially for systems on motor vehicles |
DE8620253U1 (en) * | 1985-08-01 | 1986-09-11 | Mes S.A., Stabio | Double feed pump |
DE8702092U1 (en) * | 1986-02-11 | 1987-08-20 | Lucas Electrical Electronics & Systems Ltd., Birmingham | Fluid pump |
DE3714127A1 (en) * | 1986-04-30 | 1987-11-05 | Maruko Keihoki Kk | CONVEYOR PUMP WITH SELECTABLE DIRECTION |
GB2199080A (en) * | 1986-12-09 | 1988-06-29 | Trico Folberth Ltd | Valve arrangement for a bi-directional rotary pump |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016066485A1 (en) * | 2014-10-29 | 2016-05-06 | BSH Hausgeräte GmbH | Laundry-care appliance having a detergent-solution pump |
CN107110177A (en) * | 2014-10-29 | 2017-08-29 | Bsh家用电器有限公司 | Laundry treatment appliance with detergent solution pump |
RU2675461C2 (en) * | 2014-10-29 | 2018-12-19 | Бсх Хаусгерете Гмбх | Linen care device with pump for washing solution |
CN108603324A (en) * | 2016-02-10 | 2018-09-28 | Bsh家用电器有限公司 | Washings care appliance with lye pump |
CN108603324B (en) * | 2016-02-10 | 2021-01-05 | Bsh家用电器有限公司 | Washing article nursing device with lye pump |
Also Published As
Publication number | Publication date |
---|---|
KR100225915B1 (en) | 1999-10-15 |
DE59402687D1 (en) | 1997-06-19 |
EP0610866B1 (en) | 1997-05-14 |
EP0610866A1 (en) | 1994-08-17 |
KR940020003A (en) | 1994-09-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8141 | Disposal/no request for examination |