EP2072823B1 - Rotary pump with venting arrangement - Google Patents
Rotary pump with venting arrangement Download PDFInfo
- Publication number
- EP2072823B1 EP2072823B1 EP08021509.8A EP08021509A EP2072823B1 EP 2072823 B1 EP2072823 B1 EP 2072823B1 EP 08021509 A EP08021509 A EP 08021509A EP 2072823 B1 EP2072823 B1 EP 2072823B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- separation chamber
- pump
- chamber
- venting
- 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.)
- Active
Links
- 238000013022 venting Methods 0.000 title claims description 20
- 238000000926 separation method Methods 0.000 claims description 45
- 239000007788 liquid Substances 0.000 claims description 20
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
- F04D9/00—Priming; Preventing vapour lock
- F04D9/001—Preventing vapour lock
- F04D9/002—Preventing vapour lock by means in the very pump
- F04D9/003—Preventing vapour lock by means in the very pump separating and removing the vapour
Definitions
- the invention relates to a centrifugal pump with a flowed through by the liquid to be conveyed, arranged in the flow direction in front of the pump chamber separation chamber, wherein the separation chamber is formed substantially cylindrical with a vertical axis, to form a liquid cyclone in the separation chamber of the liquid inlet has a tangential orientation, and Separation chamber has an upper central vent.
- the object of the invention is to improve the separation chamber upstream of a centrifugal pump in such a way that with small external dimensions a high venting performance can be achieved.
- This object is achieved in that the upper vent of the separation chamber is surrounded by a tube which projects down into the separation chamber and that the separation chamber is connected to the pump chamber via a channel, the goes off the side of the separation chamber at the level of the tube and opens at the suction port of the pump impeller.
- a low volume of the separation chamber can be achieved with high venting performance, so that the overall external dimensions of the venting device and the pump are low. Also, a particularly early and safe separation of the gas bubbles is achieved from the liquid.
- the length of the tube is 1 ⁇ 4 to 1 ⁇ 2 of the height of the separation chamber, preferably at least the height of the entrance of the channel.
- the upper vent opening of the separation chamber leads to a ventilation chamber arranged above the separation chamber, wherein an automatic venting takes place.
- the upper venting chamber may have a float which can be dismantled upwards.
- the housing of the venting device in particular the separation chamber is integrally connected to the housing of the pump, so that the pump and the venting device form a unit is particularly advantageous.
- the liquid inlet of the separation chamber has at least one guide surface guiding the liquid and the liquid inlet of the separation chamber is arranged on its underside and stationary guide vanes have in particular a guide vane ring.
- a particularly stable cyclone is produced in the separation chamber and, moreover, the outer dimensions are reduced since a lateral inflow is not required.
- the inlet of the separation chamber is arranged on its underside and in this case forms the suction nozzle of the pump.
- a centrifugal pump 1 which is used in particular for circulating the heating water in heating systems, has within a pump housing 2 a spiral space 3, in which a pump impeller 1a is mounted.
- the pump impeller can be driven by an electric motor, not shown, which can be fastened with its motor housing to a connection surface 4 of the housing 2.
- a coaxial to the pump impeller 5 opens at the suction port of the pump impeller 1a, so that the pump 1 promotes from the channel 5 to the discharge nozzle 6, which is connected to the spiral space 3.
- the discharge nozzle 6 is arranged on the upper side of the pump with a preferably vertical axis and has an external thread 7.
- a ventilation device 8 is laterally formed with its housing 9, so that the two housings 2, 9 are in one piece.
- the housing 9 forms a lower separation chamber 10, in which the incoming liquid in particular water forms a cyclone, so that the space 10 can also be called a "cyclone chamber”.
- the separation chamber 10 has a lower liquid inlet 11, whose cross section is circular and corresponds to the cross section of the separation chamber 10. In this case, the inlet 11 goes down into the suction nozzle 12, which simultaneously forms the suction nozzle of the pump.
- a vane ring 13 is coaxially mounted near the lower liquid inlet 11 and thus close to the suction nozzle 12, wherein the guide vanes 14 annularly surround a central, aerodynamically shaped body.
- the guide vanes 14 move or rotate, but solely by the suction of the liquid is formed by the cyclone.
- the opening 16 is surrounded by a central coaxial tube 17, which is open at the bottom and thus projects down into the space 10 to safely receive the gas bubbles accumulating in the center of the cyclone and to lead upwards into a venting chamber 18.
- the length of the tube (17) 1 ⁇ 4 to 1 ⁇ 2 height of the separation chamber, preferably at least the height of the inlet 20 of the channel 5.
- a float 19 is mounted for automatic venting.
- the parts 11 to 19 are arranged coaxially to each other.
- the freed from the air bubbles liquid passes through an upper, arranged on the separation chamber 10 outlet opening 20 in a horizontal channel 5, which connects the separation chamber 10 with the spiral space 3, wherein the channel 5 opens at the suction opening of the pump impeller.
- the axis of the pressure port 6 is arranged parallel to the axis of the suction nozzle 12 and the separation chamber 10, so that a simple attachment in pipes is made possible.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
Die Erfindung betrifft eine Kreiselpumpe mit einer von der zu fördernden Flüssigkeit durchströmten, in Strömungsrichtung vor der Pumpenkammer angeordneten Separationskammer, wobei die Separationskammer im Wesentlichen zylindrisch mit senkrechter Achse ausgebildet ist, zum Bilden eines Flüssigkeitszyklons in der Separationskammer der Flüssigkeitseinlass eine tangentiale Ausrichtung aufweist, und die Separationskammer eine obere mittige Entlüftungsöffnung aufweist.The invention relates to a centrifugal pump with a flowed through by the liquid to be conveyed, arranged in the flow direction in front of the pump chamber separation chamber, wherein the separation chamber is formed substantially cylindrical with a vertical axis, to form a liquid cyclone in the separation chamber of the liquid inlet has a tangential orientation, and Separation chamber has an upper central vent.
Eine solche Kreiselpumpe ist aus der
Aufgabe der Erfindung ist es, die eine Kreiselpumpe vorgeschaltete Separationskammer in einer Weise zu verbessern, dass bei geringen Außenabmessungen eine hohe Entlüftungsleistung erreichbar ist.The object of the invention is to improve the separation chamber upstream of a centrifugal pump in such a way that with small external dimensions a high venting performance can be achieved.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass die obere Entlüftungsöffnung der Separationskammer von einem Rohr umgeben ist, das nach unten in die Separationskammer hineinragt und dass die Separationskammer mit dem Pumpenraum über einen Kanal verbunden ist, der seitlich der Separationskammer in Höhe des Rohres abgeht und an der Saugöffnung des Pumpenlaufrades mündet.This object is achieved in that the upper vent of the separation chamber is surrounded by a tube which projects down into the separation chamber and that the separation chamber is connected to the pump chamber via a channel, the goes off the side of the separation chamber at the level of the tube and opens at the suction port of the pump impeller.
Hierdurch kann bei hoher Entlüftungsleistung ein geringes Bauvolumen der Separationskammer erreicht werden, so dass die Gesamtaußenabmessungen der Entlüftungsvorrichtung und der Pumpe gering sind. Auch wird eine besonders frühe und sichere Trennung der Gasblasen aus der Flüssigkeit erreicht.As a result, a low volume of the separation chamber can be achieved with high venting performance, so that the overall external dimensions of the venting device and the pump are low. Also, a particularly early and safe separation of the gas bubbles is achieved from the liquid.
Vorzugsweise wird vorgeschlagen, dass die Länge des Rohres ¼ bis ½ der Höhe der Separationskammer, vorzugsweise mindestens die Höhe des Eingangs des Kanals beträgt. Ferner wird vorgeschlagen, dass die obere Entlüftungsöffnung der Separationskammer zu einer oberhalb der Separationskammer angeordneten Entlüftungskammer führt, wobei eine automatische Entlüftung erfolgt. Hierbei kann die obere Entlüftungskammer einen Schwimmer aufweisen, der nach oben hin demontierbar ist.Preferably, it is proposed that the length of the tube is ¼ to ½ of the height of the separation chamber, preferably at least the height of the entrance of the channel. It is also proposed that the upper vent opening of the separation chamber leads to a ventilation chamber arranged above the separation chamber, wherein an automatic venting takes place. In this case, the upper venting chamber may have a float which can be dismantled upwards.
Besonders vorteilhaft ist es, wenn das Gehäuse der Entlüftungsvorrichtung insbesondere der Separationskammer mit dem Gehäuse der Pumpe einstückig verbunden ist, so dass die Pumpe und die Entlüftungsvorrichtung eine Einheit bilden.It when the housing of the venting device, in particular the separation chamber is integrally connected to the housing of the pump, so that the pump and the venting device form a unit is particularly advantageous.
Besonders vorteilhaft ist es, wenn der Flüssigkeitseinlass der Separationskammer mindestens eine die Flüssigkeit führende Leitfläche aufweist und der Flüssigkeitseinlass der Separationskammer an ihrer Unterseite angeordnet ist und stillstehende Leitschaufeln insbesondere einen Leitschaufelkranz aufweist. Hierdurch wird ein besonders stabiler Zyklon in der Separationskammer erzeugt und darüber hinaus die Außenabmessungen verringert, da ein seitlicher Zulauf nicht erforderlich ist. Vielmehr hat es sich als besonders günstig herausgestellt, dass der Einlass der Separationskammer an ihrer Unterseite angeordnet ist und hierbei den Saugstutzen der Pumpe bildet.It is particularly advantageous if the liquid inlet of the separation chamber has at least one guide surface guiding the liquid and the liquid inlet of the separation chamber is arranged on its underside and stationary guide vanes have in particular a guide vane ring. As a result, a particularly stable cyclone is produced in the separation chamber and, moreover, the outer dimensions are reduced since a lateral inflow is not required. Rather, it has been found to be particularly favorable that the inlet of the separation chamber is arranged on its underside and in this case forms the suction nozzle of the pump.
Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen dargestellt und wird im Folgenden näher beschrieben. Es zeigen
- Fig. 1
- einen senkrechten Schnitt durch die Pumpe mit Entlüftungsvorrichtung und
- Fig. 2
- eine perspektivische Ansicht.
- Fig. 1
- a vertical section through the pump with venting device and
- Fig. 2
- a perspective view.
Eine Kreiselpumpe 1, die insbesondere zum Umwälzen des Heizungswassers bei Heizungsanlagen verwendet wird, weist innerhalb eines Pumpengehäuses 2 einen Spiralraum 3 auf, in dem ein Pumpenlaufrad 1a gelagert ist. Das Pumpenlaufrad ist über einen nicht dargestellten Elektromotor antreibbar, der mit seinem Motorengehäuse an einer Anschlussfläche 4 des Gehäuses 2 befestigbar ist.A centrifugal pump 1, which is used in particular for circulating the heating water in heating systems, has within a pump housing 2 a
Ein zum Pumpenlaufrad koaxialer Kanal 5 mündet an der Saugöffnung des Pumpenlaufrades 1a, so dass die Pumpe 1 aus dem Kanal 5 zum Druckstutzen 6 fördert, der mit dem Spiralraum 3 verbunden ist. Hierbei ist der Druckstutzen 6 an der Oberseite der Pumpe mit vorzugsweise senkrechter Achse angeordnet und weist ein Außengewinde 7 auf.A coaxial to the
Am Pumpengehäuse 2 ist seitlich eine Entlüftungsvorrichtung 8 mit ihrem Gehäuse 9 angeformt, so dass die beiden Gehäuse 2, 9 einstückig sind. Das Gehäuse 9 bildet eine untere Separationskammer 10, in der die eingehende Flüssigkeit insbesondere Wasser einen Zyklon ausbildet, so dass der Raum 10 auch eine "Zyklonkammer" genannt werden kann. Die Separationskammer 10 weist einen unteren Flüssigkeitseinlass 11 auf, dessen Querschnitt kreisförmig ist und dem Querschnitt der Separationskammer 10 entspricht. Hierbei geht der Einlass 11 nach unten in den Saugstutzen 12 über, der gleichzeitig den Saugstutzen der Pumpe bildet.On the
In der zylindrischen Separationskammer 10, dessen Achse senkrecht steht, ist nahe dem unteren Flüssigkeitseinlass 11 und damit nahe dem Saugstutzen 12 ein Leitschaufelkranz 13 koaxial befestigt, wobei die Leitschaufeln 14 ringförmig einen mittigen, strömungsgünstig geformten Körper umgeben. Durch den Leitschaufelkranz 13 wird die angesaugte Flüssigkeit zu einem Zyklon bewegt, der innerhalb der Separationskammer 10 rotiert. Hierbei ist es nicht erforderlich, dass die Leitschaufeln 14 sich bewegen bzw. rotieren, sondern allein durch das Ansaugen der Flüssigkeit entsteht der Zyklon.In the
Durch den Zyklon gelangen in der Flüssigkeit befindliche Gasblasen (insbesondere Luftblasen) in den mittleren Bereich des Zyklons und damit zu einer oberen Entlüftungsöffnung 16, die in der oberen Abschlusswand der Separationskammer 10 angeordnet ist. Erfindungsgemäß ist die Öffnung 16 von einem mittleren koaxialen Rohr 17 umgeben, das nach unten offen ist und damit nach unten in den Raum 10 hineinragt, um die sich in der Mitte des Zyklons ansammelnden Gasblasen sicher aufzunehmen und nach oben in eine Entlüftungskammer 18 zu führen. Hierbei beträgt die Länge des Rohres (17) ¼ bis ½ Höhe der Separationskammer, vorzugsweise mindestens die Höhe des Eingangs 20 des Kanals 5. In der oberhalb der Separationskammer 10 koaxial angeordneten Entlüftungskammer 18 ist ein Schwimmer 19 zur selbsttätigen Entlüftung gelagert. Hierbei sind die Teile 11 bis 19 zueinander koaxial angeordnet.Through the cyclone gas bubbles located in the liquid (in particular air bubbles) in the central region of the cyclone and thus to an
Die von den Luftblasen befreite Flüssigkeit gelangt über eine obere, an der Separationskammer 10 angeordnete Auslassöffnung 20 in einen waagerechten Kanal 5, der die Separationskammer 10 mit dem Spiralraum 3 verbindet, wobei der Kanal 5 an der Saugöffnung des Pumpenlaufrades mündet. Die Achse des Druckstutzens 6 ist parallel zur Achse des Saugstutzens 12 und der Separationskammer 10 angeordnet, so dass eine einfache Befestigung in Rohrleitungen ermöglicht wird.The freed from the air bubbles liquid passes through an upper, arranged on the
Claims (8)
- Rotary pump (1) having a separation chamber (10) through which the liquid to be delivered flows and which is arranged upstream of the pump chamber (3) in the flow direction, wherein- the separation chamber (10) is formed substantially cylindrically with a vertical axis,- the liquid inlet has a tangential orientation for the purpose of forming a liquid cyclone in the separation chamber (10), and- the separation chamber (10) has an upper central venting opening (16),characterized in that the upper venting opening (16) of the separation chamber (10) is surrounded by a tube (17) which projects into the separation chamber (10) in the downward direction, and in that the separation chamber (10) is connected to the pump chamber (3) via a duct (5) which extends laterally from the separation chamber at the height of the tube (17) and which opens at the suction opening of the pump impeller.
- Pump according to Claim 1, characterized in that the length of the tube (17) is ¼ to ½ of the height of the separation chamber (10), preferably at least the height of the inlet (20) of the duct (5) .
- Pump according to either of the preceding claims, characterized in that the inlet (11) of the separation chamber (10) forms the suction connection piece (12) of the pump (1) or is close to the suction connection piece (12) of the pump (1).
- Pump according to one of the preceding claims, characterized in that the upper venting opening (16) of the separation chamber (10) leads to a venting chamber (18) which is arranged above the separation chamber.
- Pump according to Claim 4, characterized in that the upper venting chamber (18) has a float (19) which is able to be dismounted in the upward direction.
- Pump according to one of the preceding claims, characterized in that the housing (9) of the venting device, in particular of the separation chamber (10), is integrally connected to the housing (2) of the pump (1).
- Pump according to one of the preceding claims, characterized in that the liquid inlet of the separation chamber (10) has at least one guide surface (14) which conducts the liquid.
- Pump according to one of the preceding claims, characterized in that the liquid inlet (11) of the separation chamber (10) is arranged on the underside of the latter and has at least one stationary guide blade (14), in particular a guide blade ring (13).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200710061558 DE102007061558A1 (en) | 2007-12-18 | 2007-12-18 | Centrifugal pump with ventilation |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2072823A2 EP2072823A2 (en) | 2009-06-24 |
EP2072823A3 EP2072823A3 (en) | 2014-06-25 |
EP2072823B1 true EP2072823B1 (en) | 2018-08-08 |
Family
ID=40210450
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08021509.8A Active EP2072823B1 (en) | 2007-12-18 | 2008-12-11 | Rotary pump with venting arrangement |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2072823B1 (en) |
DE (1) | DE102007061558A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH710814A2 (en) * | 2015-03-03 | 2016-09-15 | Imi Hydronic Eng Switzerland Ag | Device for degassing a liquid. |
CN114893393B (en) * | 2022-04-21 | 2024-05-17 | 北京太阳宫燃气热电有限公司 | Exhaust device of water supply pump of gas boiler |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL6404199A (en) * | 1964-04-17 | 1965-10-18 | ||
DE1653725A1 (en) * | 1967-09-29 | 1972-01-13 | Hanning Elektro Werke | Circulation pump for heating systems |
DE3068606D1 (en) * | 1979-09-13 | 1984-08-23 | Vaillant Joh Gmbh & Co | Pump with degasser |
SE420230C (en) * | 1980-10-20 | 1987-11-16 | Sala International Ab | DEVICE FOR PUMPING FOR FOAMING LIQUIDS |
DE8102304U1 (en) * | 1981-01-30 | 1981-07-02 | Grundfos A/S, 8850 Bjerringbro | PUMP WITH NAMEPLATE |
DE3109918C2 (en) * | 1981-03-14 | 1989-03-16 | Wilo-Werk Gmbh & Co Pumpen- Und Apparatebau, 4600 Dortmund | Liquid pump with gas separation chamber |
DE3703434A1 (en) | 1987-02-05 | 1988-08-18 | Oplaender Wilo Werk Gmbh | Centrifugal pump with vent chamber - has passage with side outlet enclosing outlet to rotor |
AT389236B (en) * | 1987-11-03 | 1989-11-10 | Trawoeger Werner | SEPARATOR |
DE19743062A1 (en) | 1997-09-30 | 1999-04-01 | Wilo Gmbh | Air separation device |
-
2007
- 2007-12-18 DE DE200710061558 patent/DE102007061558A1/en not_active Withdrawn
-
2008
- 2008-12-11 EP EP08021509.8A patent/EP2072823B1/en active Active
Also Published As
Publication number | Publication date |
---|---|
DE102007061558A1 (en) | 2009-06-25 |
EP2072823A3 (en) | 2014-06-25 |
EP2072823A2 (en) | 2009-06-24 |
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