EP0280782A1 - Steam generator - Google Patents

Steam generator Download PDF

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Publication number
EP0280782A1
EP0280782A1 EP87118632A EP87118632A EP0280782A1 EP 0280782 A1 EP0280782 A1 EP 0280782A1 EP 87118632 A EP87118632 A EP 87118632A EP 87118632 A EP87118632 A EP 87118632A EP 0280782 A1 EP0280782 A1 EP 0280782A1
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EP
European Patent Office
Prior art keywords
lifting tube
fresh water
steam
pipe
water connection
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Withdrawn
Application number
EP87118632A
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German (de)
French (fr)
Inventor
Wilfred E. Schönmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
E Schonmann & Co AG
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E Schonmann & Co AG
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
Priority claimed from CH37787A external-priority patent/CH671448A5/en
Priority claimed from CH361487A external-priority patent/CH673330A5/en
Application filed by E Schonmann & Co AG filed Critical E Schonmann & Co AG
Publication of EP0280782A1 publication Critical patent/EP0280782A1/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F10/00—Siphons
    • F04F10/02—Gravity-actuated siphons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B1/00—Methods of steam generation characterised by form of heating method
    • F22B1/28—Methods of steam generation characterised by form of heating method in boilers heated electrically
    • F22B1/284—Methods of steam generation characterised by form of heating method in boilers heated electrically with water in reservoirs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/48—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers
    • F22B37/50—Devices for removing water, salt, or sludge from boilers; Arrangements of cleaning apparatus in boilers; Combinations thereof with boilers for draining or expelling water

Definitions

  • the present invention relates to a steam generating device, in particular for air humidification systems, with a steam boiler which can be connected to a consumer via a steam pipe, which is in flow connection with a fresh water connection via controllable valve means and which opens into a drain line.
  • Steam generating devices of this type are usually connected directly to normal tap water, which passes through suitable supply lines and valve means into a steam cylinder, where it evaporates under the direct action of resistance heating elements. The steam then reaches the consumer via a steam line, for example into a steam distribution pipe of an air humidification system.
  • the drain line is formed by a lifting pipe of a suction lifting device arrangement, the lifting pipe being operatively connected to controllable suction means.
  • Suitable suction means can be pumps, for example be medium.
  • suction means which are operatively connected to the lifting tube comprise a jet pump which is connected to the fresh water connection of the steam boiler and which, on the suction side, opens into the down pipe of the lifting tube with an intake connection in the region of the knee and which via a solenoid valve connects to the fresh water connection connected is.
  • the fresh water connection can be made separately on the steam boiler.
  • the lifting tube of the siphon arrangement permits a significantly simplified embodiment in that the fresh water connection opens into the riser pipe of the lifting tube via a further solenoid valve in the area of the elbow.
  • the lifting tube can also connect the interior of the steam boiler to a lower-level siphon basin provided with a fresh water connection and a waste water connection, the lifting tube then also being operatively connected to controllable suction means.
  • Suction means suitable for this can also be pump means, for example.
  • suction means that are operatively connected to the lifting tube include a jet pump that is connected to the fresh water connection of the steam boiler and that ends on the suction side with an intake port in the knee of the lifting tube and that can be controlled via a valve-controlled normal pressure line.
  • the siphon basin Since there is a need to fill the siphon basin with a sufficient amount of liquid for the suction process, it is also advantageous to avoid multiple fresh water connections if the siphon basin has a fill pipe and the steam boiler has an inlet pipe with a common, controllable inlet solenoid valve closed fresh water connection are connected.
  • a steam boiler 1 which can be connected via a steam pipe 2 to a consumer (not shown in more detail), the contents of which, as a rule normal tap water, can evaporate under the direct action of resistance heating elements 3.
  • the tap water is introduced into the steam boiler 1 from a fresh water connection 13 via an inlet solenoid valve 12 and an inlet pipe 9 ⁇ and via the riser pipe of a lifting pipe 21, which will be described in more detail below.
  • a level control 4 monitors the liquid level in the steam boiler 1 and emits corresponding control signals to a control circuit 16, via which the inlet solenoid valve 12 is closed or opened.
  • a siphon arrangement 20 For emptying resp. Drainage of the steam boiler 1 is now provided according to the invention a siphon arrangement 20, the so-called, aforementioned lifting tube 21 of the interior of the steam boiler 1 with a lower external level, which is indicated by the outlet 23 ⁇ of the down pipe of the lifting tube 21.
  • a closed liquid column can be created in the lifting tube by suctioning in a lifting tube, which creates an overpressure in the tube from the higher level to the lower level side, which causes the liquid in the tube to flow, whereupon the steam boiler empties extremely quickly.
  • a so-called jet pump 28 which receives its drive energy from the incoming fresh water and is connected to the fresh water connection 13 via a solenoid valve 11 ⁇ .
  • this jet pump 28 On the intake side, this jet pump 28 is connected to the down pipe of the lifting tube 21 via an intake connection 29 in the region of the knee 8.
  • the solenoid valve 11 ′ can also be actuated by the control circuit 16 via a control line 7.
  • the inlet solenoid valve 12 is opened, whereupon fresh water can flow in via the down pipe of the lifting tube 21 until the level control 4 interrupts the filling process. If the liquid level in the steam boiler 1 then drops, the level control regulates tion 4 via the control circuit 16, the refilling by opening and closing the inlet solenoid valve 12.
  • the heating elements 3 are first switched off and the inlet solenoid valve 12 is closed. Then the further solenoid valve 11 ⁇ is opened, whereby the jet pump 28 generates a negative pressure on the riser pipe side in the lifting pipe 21, by means of which the water column in the riser pipe is raised until the independent flow in the pipe begins, as described above.
  • the cold fresh water can mix with the boiler water at the boiling point, causing a mixture to flow into the sewage pipe that is less than 60 ° warm.
  • valve II If the valve II prepare is then closed and the steam boiler 1 has emptied, it can be opened for cleaning.
  • the steam generating device in turn comprises the steam boiler 1, which can be connected via the steam pipe 2 to a consumer (not shown in more detail), the content of which, as a rule, a normal line water, can evaporate under the direct effect of resistance heating elements 3.
  • the tap water is also introduced into the steam boiler 1 from a fresh water connection 13 via an inlet solenoid valve 12 and an inlet pipe 9.
  • a level control 4 monitors the liquid level in the steam boiler 1 and emits corresponding control signals to a control circuit 16, via which the inlet solenoid valve 12 is closed or opened.
  • Draining off the steam boiler 1 now connects the lifting tube 21 to the interior of the steam boiler 1 with a lower-level siphon basin 23 provided with a fresh water connection and a waste water connection.
  • the latter is filled with a sufficient amount of water for a suction process, at the level of which the downpipe 24 forming the waste water connection opens .
  • a closed liquid column can be generated in the knee 8 of the lifting tube 21 in the lifting tube, which creates an overpressure in the tube from left to right in the illustration, which causes the liquid in the tube to flow, whereupon the steam boiler moves extremely quickly emptied.
  • the contents of the kettle flow out through the downpipe 24 at the level of the siphon basin 23.
  • a jet pump 28 is again provided, which derives its drive energy from the incoming fresh receives water and is thus turned on in the inlet pipe 9 for the steam boiler 1.
  • this jet pump 28 is connected to the knee 8 of the lifting tube 21 via an intake connector 29.
  • the function is controlled in the simplest way via a normal pressure line 6 which opens into the intake port 29 and which can be closed by a solenoid valve 11 in order to initiate the intake process.
  • This solenoid valve 11 can also be actuated by the control circuit 16 via a control line 7.
  • the aforementioned fresh water connection 13 also serves to fill the siphon basin 23, for which purpose a branch line in the form of a filling line 22 for the siphon basin 23 is connected downstream of the inlet solenoid valve 12. In order to take into account a smaller fill quantity here, a throttle device 15 is switched on in this fill line 22.
  • the inlet solenoid valve 12 is opened, whereupon fresh water can flow in until the level control 4 interrupts the filling process.
  • the siphon basin 23 is also filled via the filling line 22. If the liquid level in the steam boiler 1 then drops, the level control 4 regulates the refilling via the control circuit 16 by opening and closing the inlet solenoid valve 12.
  • the heating elements 3 are also switched off here first and then the inlet solenoid valve 12 is initially opened.
  • Fresh water thus reaches the steam boiler 1 via the inlet pipe 9 opening out near the bottom of the boiler and cools the water near the suction opening of the lifting tube 21 near the bottom, whereby the steam generation stops.
  • the solenoid valve 11 is closed, whereby the jet pump 8 generates a negative pressure in the lifting tube 21, by means of which the water columns in the lifting tube 21 are raised until the siphon effect begins as described above. If the inlet valve 12 is then closed and the normal pressure valve 11 is opened, the steam boiler 1 remains essentially empty and can be opened for cleaning.

Abstract

The steam generator comprises a steam boiler (1) which can be connected via a steam pipe (2) to a consumer and which is fluidically connected via controllable valve means (12) to a fresh water connection (13) and which opens into a discharge line. In this connection, the discharge line is formed by a siphon pipe (21) of a siphon arrangement (20), the siphon pipe (21) being in work connection with controllable suction means (25). Emptying and residue removal can thus take place completely trouble-free through pipe means with relatively large flow cross- section without any hindrance from valve means, throttles and the like. <IMAGE>

Description

Die vorliegende Erfindung betrifft eine Dampferzeugungsein­richtung, insbesondere für Luftbefeuchtungsanlagen, mit einem, über ein Dampfrohr mit einem Verbraucher verbindba­ren Dampfkessel, der über ansteuerbare Ventilmittel mit einem Frischwasseranschluss in Strömungsverbindung steht und der in einer Ablaufleitung ausmündet.The present invention relates to a steam generating device, in particular for air humidification systems, with a steam boiler which can be connected to a consumer via a steam pipe, which is in flow connection with a fresh water connection via controllable valve means and which opens into a drain line.

Dampferzeugungseinrichtungen dieser Art werden üblicherweise direkt an normales Leitungswasser angeschlossen, welches über geeignete Zuleitungen und Ventilmittel in einen Dampf­zylinder gelangt, wo es unter direkter Wirkung von Wider­standsheizelementen verdampft. Ueber eine Dampfleitung ge­langt dann der Wasserdampf zum Verbraucher, etwa in ein Dampfverteilrohr einer Luftbefeuchtungsanlage.Steam generating devices of this type are usually connected directly to normal tap water, which passes through suitable supply lines and valve means into a steam cylinder, where it evaporates under the direct action of resistance heating elements. The steam then reaches the consumer via a steam line, for example into a steam distribution pipe of an air humidification system.

Bei solchen Einrichtungen ist ein häufiges Abschlämmen resp. Entleeren des Dampfzylinders zwecks Reinigung notwendig, was über in der Regel Magnet-Ventilmittel in der Ablauflei­tung bodenseitig des Dampfzylinders erfolgt.In such facilities, a frequent blowdown or It is necessary to empty the steam cylinder for cleaning, which is usually done via magnetic valve means in the drain line on the bottom of the steam cylinder.

Diese Magnet-Ventilmittel in der Ablaufleitung geben bei solchen Systemen aber regelmässig Anlass zu Störungen, da die Ventilmittel von den abzuschlämmenden Rückständen ange­griffen und zerstört werden, was deren Auswechslung resp. Wartung verlangt.These solenoid valve means in the drain line regularly give rise to malfunctions in such systems, since the valve means are attacked and destroyed by the residues to be drained, which means their replacement or. Maintenance requires.

Es ist deshalb Aufgabe der vorliegenden Erfindung, eine Dampferzeugungseinrichtung der vorgenannten Art mit einem Entleerungs- und Abschlämmsystem auszurüsten, das ohne we­sentlichen Aufwand sicher und wartungsarm funktioniert.It is therefore an object of the present invention to equip a steam generating device of the aforementioned type with an emptying and drainage system which functions safely and requires little maintenance without substantial effort.

Dies wird erfindungsgemäss dadurch erreicht, dass die Ab­laufleitung von einem Heberohr einer Saugheberanordnung ge­bildet ist, wobei das Heberohr mit ansteuerbaren Ansaugmit­teln in Wirkungsverbindung steht.This is achieved according to the invention in that the drain line is formed by a lifting pipe of a suction lifting device arrangement, the lifting pipe being operatively connected to controllable suction means.

Damit kann ein Entleeren und Abschlämmen durch Leitungsmit­tel mit relativ grossem Durchströmungsquerschnitt ohne jedes Hindernis von Ventilmitteln, Drosseln u. dgl. absolut stö­rungsfrei erfolgen.This allows emptying and draining through pipe means with a relatively large flow cross-section without any obstacle from valve means, throttles and. Like. done absolutely trouble-free.

Hierfür geeignete Ansaugmittel können beispielsweise Pumpen­ mittel sein.Suitable suction means can be pumps, for example be medium.

Eine besonders vorteilhafte Ausgestaltung ergibt sich aber dann, wenn die mit dem Heberohr in Wirkungsverbindung ste­henden Ansaugmittel eine dem Frischwasseranschluss des Dampfkessels zugeschaltete Strahlpumpe umfassen, welche an­saugseitig mit einem Ansaugstutzen im Bereich des Knies in die Falleitung des Heberohres mündet und welche über ein Magnetventil mit dem Frischwasseranschluss verbunden ist.A particularly advantageous embodiment is obtained, however, if the suction means which are operatively connected to the lifting tube comprise a jet pump which is connected to the fresh water connection of the steam boiler and which, on the suction side, opens into the down pipe of the lifting tube with an intake connection in the region of the knee and which via a solenoid valve connects to the fresh water connection connected is.

Ansich kann der Frischwasseranschluss separat am Dampfkessel erfolgen. Das Heberohr der Saugheberanordnung gestattet aber eine wesentlich vereinfachte Ausführungsform, indem der Frischwasseranschluss über ein weiteres Magnetventil im Be­reich des Kniestückes in die Steigleitung des Heberohres einmündet.In itself, the fresh water connection can be made separately on the steam boiler. The lifting tube of the siphon arrangement, however, permits a significantly simplified embodiment in that the fresh water connection opens into the riser pipe of the lifting tube via a further solenoid valve in the area of the elbow.

Bei einer weiteren Ausführungsform des Erfindungsgegenstan­des kann zudem das Heberohr den Innenraum des Dampfkessels mit einem tiefer stehenden, mit einem Frischwasseranschluss und einem Abwasseranschluss versehenen Siphonbecken verbin­den, wobei dann ebenfalls das Heberohr mit ansteuerbaren An­saugmitteln in Wirkungsverbindung steht.In a further embodiment of the subject matter of the invention, the lifting tube can also connect the interior of the steam boiler to a lower-level siphon basin provided with a fresh water connection and a waste water connection, the lifting tube then also being operatively connected to controllable suction means.

Damit kann ebenfalls ein Entleeren und Abschlämmen durch Leitungsmittel mit relativ grossem Durchströmungsquerschnitt ohne jedes Hindernis von Ventilmitteln, Drosseln u. dgl. ab­solut störungsfrei erfolgen.This can also be used for emptying and draining through pipes with a relatively large flow cross-section without any obstacle from valve means, throttles and. Like. done absolutely trouble-free.

Hierfür geeignete Ansaugmittel können ebenfalls beispiels­weise Pumpenmittel sein.Suction means suitable for this can also be pump means, for example.

Eine besonders vorteilhafte Ausgestaltung ergibt sich hier­bei dann, wenn die mit dem Heberohr in Wirkungsverbindung stehenden Ansaugmittel eine dem Frischwasseranschluss des Dampfkessels zugeschaltete Strahlpumpe umfassen, welche an­saugseitig mit einem Ansaugstutzen im Knie des Heberohres ausmündet und welche über eine ventilgesteuerte Normaldruck­leitung ansteuerbar ist.A particularly advantageous embodiment results when the suction means that are operatively connected to the lifting tube include a jet pump that is connected to the fresh water connection of the steam boiler and that ends on the suction side with an intake port in the knee of the lifting tube and that can be controlled via a valve-controlled normal pressure line.

Da die Notwendigkeit besteht, das Siphonbecken für den An­saugvorgang mit einer ausreichenden Flüssigkeitsmenge zu füllen, ist es ferner zur Vermeidung mehrerer Frischwasser­anschlüsse vorteilhaft, wenn das Siphonbecken über eine Füll-Leitung und der Dampfkessel über ein Zulaufrohr mit einem gemeinsamen, durch ein ansteuerbares Einlass-Magnet­ventil verschlossenen Frischwasseranschluss verbunden sind.Since there is a need to fill the siphon basin with a sufficient amount of liquid for the suction process, it is also advantageous to avoid multiple fresh water connections if the siphon basin has a fill pipe and the steam boiler has an inlet pipe with a common, controllable inlet solenoid valve closed fresh water connection are connected.

Beispielsweise Ausführungsformen des Erfindungsgegenstandes sind nachfolgend anhand der Zeichnung näher erläutert. Es zeigen:

  • Fig. 1 ein Funktionsschema der erfindungsgemässen Dampfer­zeugungseinrichtung; und
  • Fig. 2 eine Ausführungsvariante der Anordnung gemäss Fig.1.
For example, embodiments of the subject matter of the invention are explained in more detail below with reference to the drawing. Show it:
  • 1 shows a functional diagram of the steam generating device according to the invention; and
  • 2 shows a variant of the arrangement according to FIG. 1.

Die Dampferzeugungseinrichtung gemäss Fig. 1 umfasst in be­kannter Weise einen, über ein Dampfrohr 2 mit einem nicht näher gezeigten Verbraucher verbindbaren Dampfkessel 1, des­sen Inhalt, in der Regel normales Leitungswasser, unter di­rekter Wirkung von Widerstandsheizelementen 3 verdampfen kann.1 comprises, in a known manner, a steam boiler 1 which can be connected via a steam pipe 2 to a consumer (not shown in more detail), the contents of which, as a rule normal tap water, can evaporate under the direct action of resistance heating elements 3.

Das Leitungswasser wird von einem Frischwasseranschluss 13 her über ein Einlass-Magnetventil 12 und ein Zulaufrohr 9ʹ sowie über die Steigleitung eines nachfolgend noch näher beschriebenen Heberohres 21 in den Dampfkessel 1 eingelei­tet.The tap water is introduced into the steam boiler 1 from a fresh water connection 13 via an inlet solenoid valve 12 and an inlet pipe 9ʹ and via the riser pipe of a lifting pipe 21, which will be described in more detail below.

Eine Niveausteuerung 4 überwacht dabei den Flüssigkeits­spiegel im Dampfkessel 1 und gibt entsprechende Steuersig­nale an eine Steuerschaltung 16 ab, über welche das Einlass-­Magnetventil 12 geschlossen bzw. geöffnet wird.A level control 4 monitors the liquid level in the steam boiler 1 and emits corresponding control signals to a control circuit 16, via which the inlet solenoid valve 12 is closed or opened.

Für ein Entleeren resp. Abschlämmen des Dampfkessels 1 ist nun erfindungsgemäss eine Saugheberanordnung 20 vorgesehen, deren sogenanntes, vorerwähntes Heberohr 21 den Innenraum des Dampfkessels 1 mit einem tiefer stehenden Aussenniveau, das durch den Auslass 23ʹ der Falleitung des Heberohres 21 angedeutet ist, verbindet.For emptying resp. Drainage of the steam boiler 1 is now provided according to the invention a siphon arrangement 20, the so-called, aforementioned lifting tube 21 of the interior of the steam boiler 1 with a lower external level, which is indicated by the outlet 23ʹ of the down pipe of the lifting tube 21.

Wie bekannt, kann durch Ansaugen eines Heberohres eine ge­schlossene Flüssigkeitssäule im Heberohr erzeugt werden, wo­durch im Rohr ein Ueberdruck von der niveauhöheren zur ni­veautieferen Seite entsteht, der die Flüssigkeit im Rohr zum Fliessen bringt, worauf sich der Dampfkessel äusserst rasch entleert.As is known, a closed liquid column can be created in the lifting tube by suctioning in a lifting tube, which creates an overpressure in the tube from the higher level to the lower level side, which causes the liquid in the tube to flow, whereupon the steam boiler empties extremely quickly.

Für das vorbeschriebene Ansaugen ist eine sogenannte Strahl­pumpe 28 vorgesehen, welche ihre Antriebsenergie vom zulau­fenden Frischwasser erhält und hierfür über ein Magnetven­til 11ʹ mit dem Frischwasseranschluss 13 verbunden ist. An­saugseitig ist diese Strahlpumpe 28 über einen Ansaugstutzen 29 im Bereich des Knies 8 mit der Falleitung des Heberohres 21 verbunden. Ueber eine Steuerleitung 7 kann dabei das Mag­netventil 11ʹ ebenfalls von der Steuerschaltung 16 her be­tätigt werden.For the suction described above, a so-called jet pump 28 is provided, which receives its drive energy from the incoming fresh water and is connected to the fresh water connection 13 via a solenoid valve 11ʹ. On the intake side, this jet pump 28 is connected to the down pipe of the lifting tube 21 via an intake connection 29 in the region of the knee 8. The solenoid valve 11 ′ can also be actuated by the control circuit 16 via a control line 7.

Um den Dampfkessel 1 füllen zu können, wird das Einlass-Mag­netventil 12 geöffnet, worauf Frischwasser über die Fall­leitung des Heberohres 21 einströmen kann bis die Niveau­steuerung 4 den Füllvorgang unterbricht. Sinkt dann der Flüssigkeitspegel im Dampfkessel 1, regelt die Niveausteue­ rung 4 über die Steuerschaltung 16 das Nachfüllen durch Oeffnen und Schliessen des Einlass-Magnetventils 12.In order to be able to fill the steam boiler 1, the inlet solenoid valve 12 is opened, whereupon fresh water can flow in via the down pipe of the lifting tube 21 until the level control 4 interrupts the filling process. If the liquid level in the steam boiler 1 then drops, the level control regulates tion 4 via the control circuit 16, the refilling by opening and closing the inlet solenoid valve 12.

Zum Abschlämmen resp. Entleeren des Dampfkessels 1 werden zunächst die Heizelemente 3 abgeschaltet und das Einlass-­Magnetventil 12 geschlossen. Dann wird das weitere Magnet­ventil 11ʹ geöffnet, womit die Strahlpumpe 28 steigleitungs­seitig im Heberohr 21 einen Unterdruck erzeugt, durch wel­chen die Wassersäule in der Steigleitung angehoben wird bis die selbständige Strömung im Rohr, wie vorbeschrieben, ein­setzt. In der Falleitung kann sich dabei das kalte Frisch­wasser mit dem sich auf dem Siedepunkt befindlichen Kessel­wasser mischen, wodurch ein Gemisch der Abwasserleitung zu­fliesst, welches weniger als 60° warm ist.To blow down resp. Emptying the steam boiler 1, the heating elements 3 are first switched off and the inlet solenoid valve 12 is closed. Then the further solenoid valve 11ʹ is opened, whereby the jet pump 28 generates a negative pressure on the riser pipe side in the lifting pipe 21, by means of which the water column in the riser pipe is raised until the independent flow in the pipe begins, as described above. In the downpipe, the cold fresh water can mix with the boiler water at the boiling point, causing a mixture to flow into the sewage pipe that is less than 60 ° warm.

Wird dann das Ventil IIʹ geschlossen und hat sich der Dampf­kessel 1 geleert, kann dieser zur Reinigung geöffnet werden.If the valve II dann is then closed and the steam boiler 1 has emptied, it can be opened for cleaning.

Soll hingegen nach einem Abschlämmvorgang sofort wieder ge­füllt oder teilgefüllt werden, wird lediglich das Füll-Ven­til 12 in der vorbeschriebenen Weise geöffnet.If, on the other hand, should be filled or partially filled again immediately after a blowdown process, only the filling valve 12 is opened in the manner described above.

Die Dampferzeugungseinrichtung gemäss der Ausführungsvarian­te gemäss Fig. 2 umfasst wiederum den, über das Dampfrohr 2 mit einem nicht näher gezeigten Verbraucher verbindbaren Dampfkessel 1, dessen Inhalt, in der Regel normales Leitungs­ wasser, unter direkter Wirkung von Widerstandsheizelementen 3 verdampfen kann. Das Leitungswasser wird auch hier von einem Frischwasseranschluss 13 her über ein Einlass-Magnet­ventil 12 und ein Zulaufrohr 9 in den Dampfkessel 1 einge­leitet. Eine Niveausteuerung 4 überwacht dabei den Flüssig­keitsspiegel im Dampfkessel 1 und gibt entsprechende Steuer­signale an eine Steuerschaltung 16 ab, über welche das Ein­lass-Magnetventil 12 geschlossen bzw. geöffnet wird.The steam generating device according to the embodiment variant according to FIG. 2 in turn comprises the steam boiler 1, which can be connected via the steam pipe 2 to a consumer (not shown in more detail), the content of which, as a rule, a normal line water, can evaporate under the direct effect of resistance heating elements 3. The tap water is also introduced into the steam boiler 1 from a fresh water connection 13 via an inlet solenoid valve 12 and an inlet pipe 9. A level control 4 monitors the liquid level in the steam boiler 1 and emits corresponding control signals to a control circuit 16, via which the inlet solenoid valve 12 is closed or opened.

Für ein Entleeren resp. Abschlämmen des Dampfkessels 1 ver­bindet nun das Heberohr 21 den Innenraum des Dampfkessels 1 mit einem tiefer stehenden, mit einem Frischwasseranschluss und einem Abwasseranschluss versehenen Siphonbecken 23. Letzteres ist mit einer ausreichenden Wassermenge für einen Ansaugvorgang gefüllt, auf dessen Niveau das den Abwasser­anschluss bildende Fallrohr 24 mündet.For emptying resp. Draining off the steam boiler 1 now connects the lifting tube 21 to the interior of the steam boiler 1 with a lower-level siphon basin 23 provided with a fresh water connection and a waste water connection. The latter is filled with a sufficient amount of water for a suction process, at the level of which the downpipe 24 forming the waste water connection opens .

Wie bekannt, kann durch Ansaugen hier im Knie 8 des Hebe­rohres 21 eine geschlossene Flüssigkeitssäule im Heberohr erzeugt werden, wodurch im Rohr ein Ueberdruck von in der Darstellung links nach rechts entsteht, der die Flüssig­keit im Rohr zum Fliessen bringt, worauf sich der Dampf­kessel äusserst rasch entleert. Dabei fliesst der Kesselin­halt in Niveauhöhe im Siphonbecken 23 durch das Fallrohr 24 ab. Für dieses Ansaugen ist wieder eine Strahlpumpe 28 vor­gesehen, welche ihre Antriebsenergie vom zulaufenden Frisch­ wasser erhält und somit in das Zulaufrohr 9 für den Dampf­kessel 1 eingeschaltet ist. Ansaugseitig ist diese Strahl­pumpe 28 über einen Ansaugstutzen 29 mit dem Knie 8 des He­berohres 21 verbunden. Die Funktionssteuerung erfolgt dabei in einfachster Weise über eine in den Ansaugstutzen 29 mün­dende Normaldruck-Leitung 6, welche durch ein Magnetventil 11 verschlossen werden kann, um den Ansaugvorgang einzulei­ten. Ueber eine Steuerleitung 7 kann dabei dieses Magnet­ventil 11 ebenfalls von der Steuerschaltung 16 her betätigt werden.As is known, a closed liquid column can be generated in the knee 8 of the lifting tube 21 in the lifting tube, which creates an overpressure in the tube from left to right in the illustration, which causes the liquid in the tube to flow, whereupon the steam boiler moves extremely quickly emptied. The contents of the kettle flow out through the downpipe 24 at the level of the siphon basin 23. For this suction, a jet pump 28 is again provided, which derives its drive energy from the incoming fresh receives water and is thus turned on in the inlet pipe 9 for the steam boiler 1. On the intake side, this jet pump 28 is connected to the knee 8 of the lifting tube 21 via an intake connector 29. The function is controlled in the simplest way via a normal pressure line 6 which opens into the intake port 29 and which can be closed by a solenoid valve 11 in order to initiate the intake process. This solenoid valve 11 can also be actuated by the control circuit 16 via a control line 7.

Der vorgenannte Frischwasseranschluss 13 dient gleichzeitig auch dem Füllen des Siphonbeckens 23, wofür dem Einlass-Mag­netventil 12 eine Zweigleitung in Form einer Füll-Leitung 22 für das Siphonbecken 23 nachgeschaltet ist. Um dabei einer hier geringeren Füllmenge Rechnung zu tragen, ist in dieser Füll-Leitung 22 eine Drosselvorrichtung 15 eingeschaltet.The aforementioned fresh water connection 13 also serves to fill the siphon basin 23, for which purpose a branch line in the form of a filling line 22 for the siphon basin 23 is connected downstream of the inlet solenoid valve 12. In order to take into account a smaller fill quantity here, a throttle device 15 is switched on in this fill line 22.

Um den Dampfkessel 1 füllen zu können, wird das Einlass-­Magnetventil 12 geöffnet, worauf Frischwasser einströmen kann, bis die Niveausteuerung 4 den Füllvorgang unterbricht. Gleichzeitig wird auch das Siphonbecken 23 über die Füll-­Leitung 22 gefüllt. Sinkt dann der Flüssigkeitspegel im Dampfkessel 1, regelt die Niveausteuerung 4 über die Steuer­schaltung 16 das Nachfüllen durch Oeffnen und Schliessen des Einlass-Magnetventils 12.In order to be able to fill the steam boiler 1, the inlet solenoid valve 12 is opened, whereupon fresh water can flow in until the level control 4 interrupts the filling process. At the same time, the siphon basin 23 is also filled via the filling line 22. If the liquid level in the steam boiler 1 then drops, the level control 4 regulates the refilling via the control circuit 16 by opening and closing the inlet solenoid valve 12.

Zum Abschlämmen resp. Entleeren des Dampfkessels 1 werden auch hier zunächst die Heizelemente 3 abgeschaltet und dann das Einlass-Magnetventil 12 vorerst geöffnet. Damit gelangt Frischwasser über das, nahe dem Kesselboden ausmündende Zu­laufrohr 9 in den Dampfkessel 1 und kühlt das Wasser nahe der bodennahen Ansaugöffnung des Heberohres 21, womit die Dampferzeugung aufhört. Weiter wird das Magnetventil 11 ge­schlossen, womit die Strahlpumpe 8 im Heberohr 21 einen Unterdruck erzeugt, durch welchen die Wassersäulen im Hebe­rohr 21 angehoben werden bis die Siphonwirkung wie vorbe­schrieben einsetzt. Wird dann das Einlass-Ventil 12 ge­schlossen und das Normaldruck-Ventil 11 geöffnet, bleibt der Dampfkessel 1 im Wesentlichen leer und kann zur Reini­gung geöffnet werden. Soll hingegen nach einem Abschlämm­vorgang sofort wieder gefüllt oder teilgefüllt werden, wird nur das Normaldruck-Ventil 11 geöffnet, womit unter der Wir­kung der eintretenden Luft in den Ansaugstutzen 29 und da­mit in das Knie 8 des Heberohres 2l der sogenannte Flüssig­keitsfaden im Heberohr 21 reisst und der Flüssigkeitstrans­port im Heberohr 21 unterbrochen wird.To blow down resp. Emptying the steam boiler 1, the heating elements 3 are also switched off here first and then the inlet solenoid valve 12 is initially opened. Fresh water thus reaches the steam boiler 1 via the inlet pipe 9 opening out near the bottom of the boiler and cools the water near the suction opening of the lifting tube 21 near the bottom, whereby the steam generation stops. Furthermore, the solenoid valve 11 is closed, whereby the jet pump 8 generates a negative pressure in the lifting tube 21, by means of which the water columns in the lifting tube 21 are raised until the siphon effect begins as described above. If the inlet valve 12 is then closed and the normal pressure valve 11 is opened, the steam boiler 1 remains essentially empty and can be opened for cleaning. If, on the other hand, after a blowdown process is to be filled or partially filled again immediately, only the normal pressure valve 11 is opened, so that the so-called liquid thread in the lifting pipe 21 tears under the action of the incoming air into the suction port 29 and thus into the knee 8 of the lifting pipe 2l and the Liquid transport in the lifting tube 21 is interrupted.

Aus dem Vorstehenden ergeben sich somit Dampferzeugungsein­richtungen mit einem sehr einfachen, wartungsarmen und funk­tionssicheren Entleerungs- und Abschlämmsystem.The foregoing results in steam generating devices with a very simple, low-maintenance and functionally reliable emptying and drain system.

Claims (6)

1. Dampferzeugungseinrichtung, insbesondere für Luftbe­feuchtungsanlagen, mit einem, über ein Dampfrohr mit einem Verbraucher verbindbaren Dampfkessel, der über an­steuerbare Ventilmittel mit einem Frischwasseranschluss in Strömungsverbindung steht und der in einer Ablauf­leitung ausmündet, dadurch gekennzeichnet, dass die Ab­laufleitung von einem Heberohr (21) einer Saugheberan­ordnung (20) gebildet ist, wobei das Heberohr (21) mit ansteuerbaren Ansaugmitteln (25) in Wirkungsverbindung steht. (Priorität 18.09.87).1. Steam generating device, in particular for air humidification systems, with a steam boiler which can be connected to a consumer via a steam pipe, which is in flow connection via controllable valve means with a fresh water connection and which opens into a drain line, characterized in that the drain line has a lifting tube (21) Suction lifter arrangement (20) is formed, the lifting tube (21) being operatively connected to controllable suction means (25). (Priority 18.09.87). 2. Dampferzeugungseinrichtung nach Anspruch 1, dadurch ge­kennzeichnet, dass die mit dem Heberohr (21) in Wir­kungsverbindung stehenden Ansaugmittel (25) eine dem Frischwasseranschluss (13) des Dampfkessels (1) zuge­schaltete Strahlpumpe (28) umfassen, welche ansaugsei­tig mit einem Ansaugstutzen (29) im Bereich des Knies (8) in die Falleitung des Heberohres (21) mündet und welche über ein Magnetventil (11ʹ) mit dem Frischwasser­anschluss (13) verbunden ist. (Priorität 18.09.87).2. Steam generating device according to claim 1, characterized in that the suction means (25) which are operatively connected to the lifting tube (21) comprise a jet pump (28) which is connected to the fresh water connection (13) of the steam boiler (1) and which has a suction nozzle (29) on the suction side ) in the area of the knee (8) opens into the down pipe of the lifting tube (21) and which is connected to the fresh water connection (13) via a solenoid valve (11ʹ). (Priority 18.09.87). 3. Dampferzeugungseinrichtung nach Anspruch 1, dadurch ge­kennzeichnet, dass der Frischwasseranschluss (13) über ein weiteres Magnetventil (12) im Bereich des Kniestük­ kes (8) in die Steigleitung des Heberohres (21) einmün­det. (Priorität 18.09.87).3. Steam generating device according to claim 1, characterized in that the fresh water connection (13) via a further solenoid valve (12) in the region of the elbow kes (8) opens into the riser pipe of the lifting tube (21). (Priority 18.09.87). 4. Dampferzeugungseinrichtung nach Anspruch 1, dadurch ge­kennzeichnet, dass das Heberohr (21) den Innenraum des Dampfkessels (1) mit einem tiefer stehenden, mit einem Frischwasseranschluss und einem Abwasseranschluss ver­sehenen Siphonbecken (23) verbindet, wobei das Heberohr (21) mit ansteuerbaren Ansaugmitteln (25) in Wirkungs­verbindung steht. (Priorität 03.02.87).4. Steam generating device according to claim 1, characterized in that the lifting tube (21) connects the interior of the steam boiler (1) with a lower, with a fresh water connection and a waste water connection provided siphon basin (23), the lifting tube (21) with controllable suction means (25) is in operative connection. (Priority 03.02.87). 5. Dampferzeugungseinrichtung nach Anspruch 4, dadurch ge­kennzeichnet, dass die mit dem Heberohr (21) in Wir­kungsverbindung stehenden Ansaugmittel (25) eine dem Frischwasseranschluss (13) des Dampfkessels (1) zuge­schaltete Strahlpumpe (28) umfassen, welche ansaugseitig mit einem Ansaugstutzen (29) im Knie (8) des Heberohres (21) ausmündet und welche über eine ventilgesteuerte Normaldruckleitung (6) ansteuerbar ist.(Priorität 03.02.87).5. Steam generating device according to claim 4, characterized in that the suction means (25) which are operatively connected to the lifting tube (21) comprise a jet pump (28) which is connected to the fresh water connection (13) of the steam boiler (1) and which has a suction connection (29) on the suction side ) opens into the knee (8) of the lifting tube (21) and which can be controlled via a valve-controlled normal pressure line (6) (priority 03.02.87). 6. Dampferzeugungseinrichtung nach Anspruch 4, dadurch ge­kennzeichnet, dass das Siphonbecken (23) über eine Füll-­Leitung (22) und der Dampfkessel (1) über ein Zulaufrohr (9) mit einem gemeinsamen, durch ein ansteuerbares Ein­lass-Magnetventil (12) verschlossenen Frischwasseran­schluss (13) verbunden sind.(Priorität 03.02.87).6. Steam generating device according to claim 4, characterized in that the siphon basin (23) via a filling line (22) and the steam boiler (1) via an inlet pipe (9) with a common, closed by a controllable inlet solenoid valve (12) Fresh water connection (13) are connected (priority 03.02.87).
EP87118632A 1987-02-03 1987-12-16 Steam generator Withdrawn EP0280782A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CH377/87 1987-02-03
CH37787A CH671448A5 (en) 1987-02-03 1987-02-03 Steam generator for humidifying air
CH3614/87 1987-09-18
CH361487A CH673330A5 (en) 1987-09-18 1987-09-18 Steam generator for humidifying air

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EP0280782A1 true EP0280782A1 (en) 1988-09-07

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Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0383327A1 (en) * 1989-02-17 1990-08-22 LechMetall Landsberg GmbH Edelstahlerzeugnisse Cooking steam generator with a descaling device
EP0451066A1 (en) * 1990-04-04 1991-10-09 SOCIETE COOPERATIVE DE PRODUCTION BOURGEOIS (Société Coopérative de Production Anonyme à Capital Variable) Cooking steam generator with drain device
EP1437547A2 (en) * 2003-01-09 2004-07-14 Hansgrohe AG Device for producing steam as well as its cleaning method and method for operating the same
US7665332B2 (en) 2006-08-15 2010-02-23 Whirlpool Corporation Steam fabric treatment appliance with exhaust
US7681418B2 (en) 2006-08-15 2010-03-23 Whirlpool Corporation Water supply control for a steam generator of a fabric treatment appliance using a temperature sensor
US7690062B2 (en) 2007-08-31 2010-04-06 Whirlpool Corporation Method for cleaning a steam generator
US7707859B2 (en) 2006-08-15 2010-05-04 Whirlpool Corporation Water supply control for a steam generator of a fabric treatment appliance
US7730568B2 (en) 2006-06-09 2010-06-08 Whirlpool Corporation Removal of scale and sludge in a steam generator of a fabric treatment appliance
US7753009B2 (en) 2006-10-19 2010-07-13 Whirlpool Corporation Washer with bio prevention cycle
US7765628B2 (en) 2006-06-09 2010-08-03 Whirlpool Corporation Steam washing machine operation method having a dual speed spin pre-wash
US7841219B2 (en) 2006-08-15 2010-11-30 Whirlpool Corporation Fabric treating appliance utilizing steam
US7861343B2 (en) 2007-08-31 2011-01-04 Whirlpool Corporation Method for operating a steam generator in a fabric treatment appliance
US7886392B2 (en) 2006-08-15 2011-02-15 Whirlpool Corporation Method of sanitizing a fabric load with steam in a fabric treatment appliance
US7905119B2 (en) 2007-08-31 2011-03-15 Whirlpool Corporation Fabric treatment appliance with steam generator having a variable thermal output
US7918109B2 (en) 2007-08-31 2011-04-05 Whirlpool Corporation Fabric Treatment appliance with steam generator having a variable thermal output
US7941885B2 (en) 2006-06-09 2011-05-17 Whirlpool Corporation Steam washing machine operation method having dry spin pre-wash
US7966683B2 (en) 2007-08-31 2011-06-28 Whirlpool Corporation Method for operating a steam generator in a fabric treatment appliance
US8037565B2 (en) 2007-08-31 2011-10-18 Whirlpool Corporation Method for detecting abnormality in a fabric treatment appliance having a steam generator
US8393183B2 (en) 2007-05-07 2013-03-12 Whirlpool Corporation Fabric treatment appliance control panel and associated steam operations
US8555676B2 (en) 2007-08-31 2013-10-15 Whirlpool Corporation Fabric treatment appliance with steam backflow device
US8555675B2 (en) 2007-08-31 2013-10-15 Whirlpool Corporation Fabric treatment appliance with steam backflow device
EP2896894A1 (en) * 2013-11-04 2015-07-22 BSH Hausgeräte GmbH Steam treatment device with fixed water connection

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FR558150A (en) * 1922-10-31 1923-08-22 Pump valve for priming pipes for siphoning liquids
DE1150285B (en) * 1958-08-28 1963-06-12 Commissariat Energie Atomique Device for withdrawing fluids at different levels
WO1983001101A1 (en) * 1981-09-28 1983-03-31 Lovik, Alf Steam generator

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FR558150A (en) * 1922-10-31 1923-08-22 Pump valve for priming pipes for siphoning liquids
DE1150285B (en) * 1958-08-28 1963-06-12 Commissariat Energie Atomique Device for withdrawing fluids at different levels
WO1983001101A1 (en) * 1981-09-28 1983-03-31 Lovik, Alf Steam generator

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0383327A1 (en) * 1989-02-17 1990-08-22 LechMetall Landsberg GmbH Edelstahlerzeugnisse Cooking steam generator with a descaling device
EP0451066A1 (en) * 1990-04-04 1991-10-09 SOCIETE COOPERATIVE DE PRODUCTION BOURGEOIS (Société Coopérative de Production Anonyme à Capital Variable) Cooking steam generator with drain device
FR2660733A1 (en) * 1990-04-04 1991-10-11 Bourgeois Ste Coop Production WATER VAPOR GENERATOR FOR COOKING APPLIANCE PROVIDED WITH A DRAINING DEVICE.
US5223696A (en) * 1990-04-04 1993-06-29 Societe Cooperative De Production Bouregois Steam generator for cooking apparatus, with an emptying device
EP1437547A2 (en) * 2003-01-09 2004-07-14 Hansgrohe AG Device for producing steam as well as its cleaning method and method for operating the same
DE10301450A1 (en) * 2003-01-09 2004-07-22 Hansgrohe Ag Device for generating steam and process for cleaning and operating the same
EP1437547A3 (en) * 2003-01-09 2005-05-04 Hansgrohe AG Device for producing steam as well as its cleaning method and method for operating the same
US7730568B2 (en) 2006-06-09 2010-06-08 Whirlpool Corporation Removal of scale and sludge in a steam generator of a fabric treatment appliance
US7941885B2 (en) 2006-06-09 2011-05-17 Whirlpool Corporation Steam washing machine operation method having dry spin pre-wash
US7765628B2 (en) 2006-06-09 2010-08-03 Whirlpool Corporation Steam washing machine operation method having a dual speed spin pre-wash
US7665332B2 (en) 2006-08-15 2010-02-23 Whirlpool Corporation Steam fabric treatment appliance with exhaust
US7681418B2 (en) 2006-08-15 2010-03-23 Whirlpool Corporation Water supply control for a steam generator of a fabric treatment appliance using a temperature sensor
US7841219B2 (en) 2006-08-15 2010-11-30 Whirlpool Corporation Fabric treating appliance utilizing steam
US7707859B2 (en) 2006-08-15 2010-05-04 Whirlpool Corporation Water supply control for a steam generator of a fabric treatment appliance
US7886392B2 (en) 2006-08-15 2011-02-15 Whirlpool Corporation Method of sanitizing a fabric load with steam in a fabric treatment appliance
US7904981B2 (en) 2006-08-15 2011-03-15 Whirlpool Corporation Water supply control for a steam generator of a fabric treatment appliance
US7913339B2 (en) 2006-08-15 2011-03-29 Whirlpool Corporation Water supply control for a steam generator of a fabric treatment appliance using a temperature sensor
US7753009B2 (en) 2006-10-19 2010-07-13 Whirlpool Corporation Washer with bio prevention cycle
US10844533B2 (en) 2007-05-07 2020-11-24 Whirlpool Corporation Method for controlling a household washing machine
US8393183B2 (en) 2007-05-07 2013-03-12 Whirlpool Corporation Fabric treatment appliance control panel and associated steam operations
US7861343B2 (en) 2007-08-31 2011-01-04 Whirlpool Corporation Method for operating a steam generator in a fabric treatment appliance
US7918109B2 (en) 2007-08-31 2011-04-05 Whirlpool Corporation Fabric Treatment appliance with steam generator having a variable thermal output
US7966683B2 (en) 2007-08-31 2011-06-28 Whirlpool Corporation Method for operating a steam generator in a fabric treatment appliance
US8037565B2 (en) 2007-08-31 2011-10-18 Whirlpool Corporation Method for detecting abnormality in a fabric treatment appliance having a steam generator
US7905119B2 (en) 2007-08-31 2011-03-15 Whirlpool Corporation Fabric treatment appliance with steam generator having a variable thermal output
US8555676B2 (en) 2007-08-31 2013-10-15 Whirlpool Corporation Fabric treatment appliance with steam backflow device
US8555675B2 (en) 2007-08-31 2013-10-15 Whirlpool Corporation Fabric treatment appliance with steam backflow device
US7690062B2 (en) 2007-08-31 2010-04-06 Whirlpool Corporation Method for cleaning a steam generator
EP2896894A1 (en) * 2013-11-04 2015-07-22 BSH Hausgeräte GmbH Steam treatment device with fixed water connection

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