EP0491815A1 - Steam/water mixer - Google Patents

Steam/water mixer

Info

Publication number
EP0491815A1
EP0491815A1 EP90914145A EP90914145A EP0491815A1 EP 0491815 A1 EP0491815 A1 EP 0491815A1 EP 90914145 A EP90914145 A EP 90914145A EP 90914145 A EP90914145 A EP 90914145A EP 0491815 A1 EP0491815 A1 EP 0491815A1
Authority
EP
European Patent Office
Prior art keywords
steam
water
mixer
mixing container
inlet
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Withdrawn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
EP90914145A
Other languages
German (de)
French (fr)
Inventor
Dietrich Fagin
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.)
Henkel AG and Co KGaA
Original Assignee
Henkel AG and Co KGaA
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
Application filed by Henkel AG and Co KGaA filed Critical Henkel AG and Co KGaA
Publication of EP0491815A1 publication Critical patent/EP0491815A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
    • F22D1/28—Feed-water heaters, i.e. economisers or like preheaters for direct heat transfer, e.g. by mixing water and steam
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D23/00—Control of temperature
    • G05D23/01—Control of temperature without auxiliary power
    • G05D23/13—Control of temperature without auxiliary power by varying the mixing ratio of two fluids having different temperatures
    • G05D23/1386—Control of temperature without auxiliary power by varying the mixing ratio of two fluids having different temperatures for steam and liquid
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S261/00—Gas and liquid contact apparatus
    • Y10S261/76—Steam

Definitions

  • the present invention relates to a steam-water mixer, each with an inlet for water vapor and for water, with a container for mixing steam and water, with an outlet of this mixing container for the heated water, with an inside the mixing container between or the steam -Inlets and the or the water inlets arranged sintered material, aas is arranged so that the steam entering the mixing container only passes through the Si ntermaterial through to the water inlet or outlet of the mixing container.
  • the sintered material can be ceramic or metal. Since the steam flows through the hollow cylinder before the mixing process and thus bubbles out through the water, the lime contained in the water also falls out very finely and does not form any incrustations. This finely divided lime is discharged from the steam-water mixer with the heated water. Since only fine pearly steam and water mix in the mixing container, the cavitation noises are also significantly reduced.
  • a det-like steam-water mixer is from the older, but not previously published patent application P 38 37 728. 4-52 known.
  • this steam-water mixer With this steam-water mixer, the temperature of the emerging hot water fluctuates by approximately 10 ° C. when the counter pressure built up by the spatial height of the hot water hose and the outlet nozzle changes. Therefore, the steam-water mixer only permits according to the older patent application Use cleaning and comparable purposes, but use of this mixer for heating reactors, stirred tanks, e.g. B. in technical centers and comparable systems is not possible due to the large temperature fluctuations.
  • This invention is therefore based on the object in a steam-water mixer of the type mentioned to dampen the temperature fluctuations caused by changing spatial position of the outlet nozzle and the hot water hose to such an extent that the mixer is also suitable for heating the said containers and systems is.
  • This object is achieved according to the invention by means of fillers arranged in the space between the sintered material and the inner wall of the mixing container.
  • the fillings dampen fluctuations in temperature down to about 2 ° C with changing spatial positions of the outlet nozzle and the hot water hose.
  • the noise level is reduced from 68.5 dB (A) in the mixer according to the older patent application to 63.5 dB (A) in the mixer according to the present invention.
  • the mixer according to the invention is of course still suitable for preparing hot water for cleaning and comparable purposes.
  • the mixer according to the invention for heating containers and comparable systems, e.g. B. are used in laboratories, technical centers and production plants.
  • the filler bodies are preferably cylindrical. It is particularly advantageous if the diameter and the height of the filling bodies are approximately the same. The word “approximately” means that a deviation of up to 10% lies within the scope of this embodiment of the invention. It is also preferred that the packing consist of metal, especially stainless steel. This results in particularly good noise reduction.
  • FIG. 1 shows a side view of a steam-water mixer according to the invention with a longitudinal section of the mixing container
  • FIG. 2 shows a side view of the mixer from FIG. 1 from a viewing direction lying at right angles thereto
  • FIG. 3 is a circuit diagram of the control of the mixer according to Figures 1 and 2 and
  • Fig. 4 shows a longitudinal section through a mixing container according to the invention.
  • the steam-water mixer consists essentially of a steam inlet 5 arranged at the top in FIGS. 1 and 2, an outlet 7 shown at the bottom left in the drawings, a water inlet 2 shown at the bottom on the right and a mixing container 3 arranged between the inlets and outlets
  • the steam flows through the steam inlet 5 through the through valve 15, which can be actuated by the handwheel 16, through the steam valve 4 and the check valve 9 and finally through the steam inlets 11 into the mixing container 3.
  • the steam valve arranged between the through valve 15 and the check valve 9 4 is pneumatically operated by a rotary drive 8, which has a spring return.
  • the steam valve 4 is a ball valve.
  • the drive 8 is electrically controlled by the flow meter 1.
  • the switching time is less than one second.
  • the steam originating from a steam network with 4 bar is mixed in the mixing tank 3 with water from a service water network, which flows into the mixer at the water inlet 2.
  • a service water network which flows into the mixer at the water inlet 2.
  • egg n two-way valve 17 which can be actuated by egg n handwheel 1 8, is provided.
  • the water flows through the flow meter 1, aer controls the drive 8 only when a minimum amount of water is present, so that the steam valve 4 is opened and remains.
  • the water flows through a further check valve 1 0 and through a 90-Crad bend 1 9 tangentially at the water inlet 12 in the mixing container 3rd
  • the steam flows within the mixing container 3 through a hollow cylinder 13 made of sintered material.
  • the heated water flows through the outlet 14 of the mixing container 3 and a pipe section to the outlet 7 of the steam water mixer.
  • a coupling 24 is provided, for example for connecting hoses.
  • a ball valve 25 is installed to shut off by hand.
  • FIG 2 the thermal monitoring system of the steam-water mixer is shown.
  • a control device 6 On a laterally branching sleeve 26, a control device 6 is attached, which is connected to a thermal sensor not visible in the drawing.
  • the thermocouple measures the temperature of the water emerging from the mixing container 3.
  • the control device 6 also acts on the drive 8 of the steam valve 4.
  • the desired maximum temperature of the escaping water is set via this control device and the thermal sensor.
  • the steam-water mixer is firmly connected to a base plate 29 via a pipe clamp 27 and profile pieces 28.
  • the steam-water mixer shown supplies between 500 and 2,500 liters per hour up to 90 Crad Celsius hot water and is exhausted puts on a connection to a steam network with 4 bar.
  • a correspondingly larger mixer must be used for a larger amount of hot water.
  • the particularly high operational reliability also results from the short switching time of the flow meter 1 having a slot initiator.
  • FIG. 3 shows the circuit diagram associated with the mixer according to FIGS. 1, 2 and 4.
  • the mixer is switched on with switch 30. Between the switch 30 and the power supply are two fuses 31, 32.
  • the central component in this circuit is the isolating switch 33. It receives the signals describing the state of the mixer from the flow meter 1 and from the thermocouple 34. Via the connections 35 and 36 the isolating switch is supplied with electrical energy.
  • Flow meter 1 and thermal sensor 34 control the relays 35 and 36 within the isolating switching device 2.
  • the circuit is, as can be seen from FIG. 3, designed so that the two further relays 37 and 38 only close the circuit when both relays 35 and 36 are addressed at the same time.
  • the solenoid valve 39 is energized, which opens the steam valve 4.
  • the control circuit of the solenoid valve 39 is protected by two fuses 40, 41 which are connected directly in front of and behind the solenoid valve 39.
  • I n Fig. 4 shows a longitudinal section through a mixing container according to an embodiment of the invention.
  • I m mixing container 3 is between the sintered material 13 formed as a hollow cylinder with bottom and the inner wall 43 of the mixing container 3, another hollow cylinder 44 consisting of a perforated plate with a concentrically arranged honing cylinder the 45 attached.
  • the inner hollow cylinder 45 also consists of a perforated plate.
  • the cylinder 45 lies closely against the sintered material 13 and the hollow cylinder 44 closely against the inner wall 43 of the mixing container 3.
  • Both hollow cylinders 44 and 45 are connected to one another on the upper cover surface and each have their own base.

Abstract

L'invention concerne un mélangeur de vapeur de d'eau comportant une entrée pour la vapeur d'eau et une entrée pour l'eau, un réservoir (3) pour le mélange de la vapeur et de l'eau, une sortie (7) de ce réservoir de mélange (3) pour l'eau réchauffé, un matériau frittée (13) disposé à l'intérieur du réservoir de mélange (3) entre la ou les entrées de vapeur (11) et la ou les entrées d'eau de telle manière que la vapeur entrant dans le réservoir de mélange (3) traverse uniquement le matériau fritté (13) pour parvenir à l'entrée d'eau (12) ou à la sortie (14) du réservoir de mélange (3), ce mélangeur étant caractérisé par la présence d'une charge dans l'espace (42) séparant le matériau fritté (13) et la paroi intérieure du réservoir de mélange (3).The invention relates to a steam mixer comprising an inlet for steam and an inlet for water, a tank (3) for mixing steam and water, an outlet (7 ) of this mixing tank (3) for the heated water, a sintered material (13) arranged inside the mixing tank (3) between the steam inlet or inlets (11) and the inlet or inlets of water in such a way that the steam entering the mixing tank (3) only passes through the sintered material (13) to reach the water inlet (12) or the outlet (14) of the mixing tank (3) , this mixer being characterized by the presence of a filler in the space (42) separating the sintered material (13) and the inner wall of the mixing tank (3).

Description

" Dampf-Wasser-Mischer"  "Steam-water mixer"
Die vorliegende Erfindung betrifft einen Dampf-Wasser-Mischer mit je einem Einlaß für Wasserdampf und für Wasser , mit einem Behälter zum Mischen von Dampf und Wasser , mit einem Auslaß dieses Mischbehälters für das erwärmte Wasser , mit einem innerhalb des Mischbehälters zwischen dem oder den Dampf-Einlässen und dem oder den Wasser-Einlässen angeordnetem Sinter-Material, aas so angeordnet ist, daß der in den Mischbehälter eintretende Dampf nur durch das Si ntermaterial hindurch zum Wasser-Einlaß oder zum Auslaß des Mischbehälters gelangt. Das Sinter-Material kann dabei Keramik oder Metall sein . Da vor dem Mischvorgang der Dampf durch den Hohlzylinder strömt und damit feinstverteilt durch das Wasser perlt , fällt der im Wasser enthaltende Kalk eben falls sehr fein verteilt aus und bildet kei ne Verkrustungen. Dieser fein verteilte Kalk wird mit dem erwärmten Wasser aus dem Dampf-Wasser-Mischer ausgetragen . Da im Mischbehälter sich nur feinperliger Dampf und Wasser mischen , werden auch die Kavitationsgeräusche erheblich herabgesetzt. The present invention relates to a steam-water mixer, each with an inlet for water vapor and for water, with a container for mixing steam and water, with an outlet of this mixing container for the heated water, with an inside the mixing container between or the steam -Inlets and the or the water inlets arranged sintered material, aas is arranged so that the steam entering the mixing container only passes through the Si ntermaterial through to the water inlet or outlet of the mixing container. The sintered material can be ceramic or metal. Since the steam flows through the hollow cylinder before the mixing process and thus bubbles out through the water, the lime contained in the water also falls out very finely and does not form any incrustations. This finely divided lime is discharged from the steam-water mixer with the heated water. Since only fine pearly steam and water mix in the mixing container, the cavitation noises are also significantly reduced.
Ein detartiger Dampf-Wasser-Mischer ist aus der älteren , aber nicht vorveröffentlichten Patentanmeldung P 38 37 728 . 4-52 bekannt. Bei diesem Dampf-Wasser-Mischer schwankt die Temperatur des austretenden Heißwassers um etwa 10 °C , wenn sicn der durch die räumlicne Höhe des Heißwasser-Schiauches und der Austrittsdüse aufgebaute Gegendruck ändert. Daher läßt sicn der Dampf-Wasser-Mischer gemäß der älteren Patentanmeidung nur zu Reinigungs- und verg leichbaren Zwecken verwenden , aber ein Einsatz dieses Mischers zum Beheizen von Reaktoren , Rührkesseln ,z. B . in Technika , und vergleichbaren Systemen ist wegen der zu großen Temperaturschwankungen nicht möglich . A det-like steam-water mixer is from the older, but not previously published patent application P 38 37 728. 4-52 known. With this steam-water mixer, the temperature of the emerging hot water fluctuates by approximately 10 ° C. when the counter pressure built up by the spatial height of the hot water hose and the outlet nozzle changes. Therefore, the steam-water mixer only permits according to the older patent application Use cleaning and comparable purposes, but use of this mixer for heating reactors, stirred tanks, e.g. B. in technical centers and comparable systems is not possible due to the large temperature fluctuations.
Dieser Erfindung liegt daher die Aufgabe zugrunde , bei einem Dampf-Wasser-Mischer der eingangs genannten Art die bei wechselnder räumlicher Lage der Austrittsdüse und des Heißwasser-Schlauches hervorgerufenen Temperaturschwankungen derart stark zu dämpfen , daß der Mischer auch zum Beheizen der genannten Behälter und Systeme geeignet ist. This invention is therefore based on the object in a steam-water mixer of the type mentioned to dampen the temperature fluctuations caused by changing spatial position of the outlet nozzle and the hot water hose to such an extent that the mixer is also suitable for heating the said containers and systems is.
Diese Aufgabe wird erfindungsgemaß durch im Raum zwischen Sinter -Material und I nnenwand des Mischbehälters angeordnete Füllkörper gelöst. Die Füllkörper bewirken eine Schwankungs-Dämpfung der Temperatur bis auf etwa 2 °C bei wechselnder räumlicher Lage der Austrittsdüse und des Heißwasser-Schlauches . Außerdem wird bei ansonsten gleichen Bedingungen die Ceräuschentwicklung von 68 , 5 dB (A) bei dem Miscner nach aer älteren Patentanmeldung auf 63 , 5 dB (A) bei dem Mischer nach der vorliegenden Erfindung herabgesetzt. Der erfindungsgemäße Mischer ist natürlich weiterhin zum Bereiten von Heißwasser von Reinigungs- und vergleichbaren Zwecken geeignet. Zusätzlich kann der erfindungsgemäße Mischer zum Beheizen von Behältern und vergleichbaren Systemen , z . B . in Labors , Technika und Produktionsbetrieben eingesetzt werden . This object is achieved according to the invention by means of fillers arranged in the space between the sintered material and the inner wall of the mixing container. The fillings dampen fluctuations in temperature down to about 2 ° C with changing spatial positions of the outlet nozzle and the hot water hose. In addition, under otherwise identical conditions, the noise level is reduced from 68.5 dB (A) in the mixer according to the older patent application to 63.5 dB (A) in the mixer according to the present invention. The mixer according to the invention is of course still suitable for preparing hot water for cleaning and comparable purposes. In addition, the mixer according to the invention for heating containers and comparable systems, e.g. B. are used in laboratories, technical centers and production plants.
Vorzugsweise sind die Fülikörper zylinderförmig ausgebildet. Dabei ist es besonders vorteilhaft , wenn der Durchmesser und die Höhe der Fύllkörper etwa gleich sind . Dabei bedeutet das Wort "etwa" , das eine Abweichung bis zu 10 % im Rahmen dieser Ausgestaltung der Erfindung liegt. Außerdem wird bevorzugt , daß die Füllkörper aus Metall, insbesondere aus Edelstahl bestehen . Dadurch wird eine besonders gute Geräuschdämpfung erreicht . The filler bodies are preferably cylindrical. It is particularly advantageous if the diameter and the height of the filling bodies are approximately the same. The word "approximately" means that a deviation of up to 10% lies within the scope of this embodiment of the invention. It is also preferred that the packing consist of metal, especially stainless steel. This results in particularly good noise reduction.
Ein Ausführungsbeispiel der Erfindung wird nachstehend anhand von Zeichnungen beschrieben . Es zeigen : An embodiment of the invention is described below with reference to drawings. Show it :
Figur 1 eine Seitenansicht eines Dampfer-Wasser-Mischers gemäß der Erfindung mit einem Längsschnitt des Mischbehälters , FIG. 1 shows a side view of a steam-water mixer according to the invention with a longitudinal section of the mixing container,
Figur 2 eine Seitenansicht des Mischers von Figur 1 aus einer rechtwinklig dazu liegenden Blickrichtung , FIG. 2 shows a side view of the mixer from FIG. 1 from a viewing direction lying at right angles thereto,
Figur 3 ein Schaltbild der Steuerung des Mischers nach den Figuren 1 und 2 und Figure 3 is a circuit diagram of the control of the mixer according to Figures 1 and 2 and
Fig . 4 einen Längsschnitt durch einen Mischbehälter entsprechend der Erfindung . Fig. 4 shows a longitudinal section through a mixing container according to the invention.
Der Dampf-Wasser-Mischer besteht im wesentlichen aus einem in den Figuren 1 und 2 oben angeordneten Dampfeinlaß 5 , einem in den Zeichnungen unten links dargestellten Auslaß 7 , einem dane ben rechts dargestellten Wassereinlaß 2 und einem zwischen den Ein- und Auslässen angeordneten Mischbehälter 3. Der Dampf strömt durch den Dampfeinlaß 5 über das Durchgangsventil 15 , das mit dem Handrad 16 betätigbar ist , durch das Dampfventil 4 und das Rückschlagventil 9 und schließlich durch die Dampfeinlässe 1 1 in den Mischbehälter 3. Das zwischen Durchgangsventil 15 und Rückschlagventil 9 angeordnete Dampfventil 4 wird von einem Drehantrieb 8 , der eine Federrückstellung aufweist, pneuma tisch betätigt. Bei dem Dampfventil 4 handelt es sich um einen Kugelhahn. Wie nachstehend noch ausgeführt wird , wird der Antrieb 8 elektrisch vom Durchflußmesser 1 gesteuert. Die Schaltzeit beträgt weniger als eine Sekunde . The steam-water mixer consists essentially of a steam inlet 5 arranged at the top in FIGS. 1 and 2, an outlet 7 shown at the bottom left in the drawings, a water inlet 2 shown at the bottom on the right and a mixing container 3 arranged between the inlets and outlets The steam flows through the steam inlet 5 through the through valve 15, which can be actuated by the handwheel 16, through the steam valve 4 and the check valve 9 and finally through the steam inlets 11 into the mixing container 3. The steam valve arranged between the through valve 15 and the check valve 9 4 is pneumatically operated by a rotary drive 8, which has a spring return. The steam valve 4 is a ball valve. As will be explained below, the drive 8 is electrically controlled by the flow meter 1. The switching time is less than one second.
Der aus einem Dampfnetz mit 4 bar stammende Dampf wird im Mischbehälter 3 mit Wasser aus einem Brauchwassernetz vermischt, das beim Wassereinlaß 2 in den Mischer strömt. Am Wassereinlaß 2 ist ebenfalls ei n Durchgangsventil 17 , das durch ei n Handrad 1 8 betätigbar ist , vorgesehen . Nach Durchfließen des Durchgangsventits 17 strömt das Wasser durch den Durchflußmesser 1 , aer nur bei Vorliegen einer Mindestwassermenge den Antrieb 8 so steuert, daß das Dampfventil 4 geöffnet wird und bleibt . Nach Durchströmen des Du rchflußmessers 1 fließt das Wasser durch ein weiteres Rückschlagventil 1 0 und durch einen 90-Crad- Bogen 1 9 tangential beim Wassereinlaß 12 in den Mischbehälter 3. The steam originating from a steam network with 4 bar is mixed in the mixing tank 3 with water from a service water network, which flows into the mixer at the water inlet 2. At the water inlet 2 is also egg n two-way valve 17, which can be actuated by egg n handwheel 1 8, is provided. After flowing through the passage valve 17, the water flows through the flow meter 1, aer controls the drive 8 only when a minimum amount of water is present, so that the steam valve 4 is opened and remains. After flowing through the Du rchflußmessers 1, the water flows through a further check valve 1 0 and through a 90-Crad bend 1 9 tangentially at the water inlet 12 in the mixing container 3rd
Bevor Wasser und Dampf aufeinander treffen , strömt der Dampf innerhalb des Mischbehälters 3 durch einen Hohlzylinder 13 aus Sinter-Material. Before water and steam meet, the steam flows within the mixing container 3 through a hollow cylinder 13 made of sintered material.
Nach dem Durchmischen von Dampf und Wasser strömt aas erwärmte Wasser durch den Auslaß 14 des Mischbehälters 3 und ein Rohrstύck zum Auslaß 7 des Dampfwasser-Mischers . Am Ende dieses Auslasses ist eine Kupplung 24 zum Beispiel zum Anschließen von Schläuchen vorgesehen. Noch vor der Kupplung 24 ist zum Absperren von Hand ein Kugelhahn 25 eingebaut. After the steam and water have been mixed, the heated water flows through the outlet 14 of the mixing container 3 and a pipe section to the outlet 7 of the steam water mixer. At the end of this outlet, a coupling 24 is provided, for example for connecting hoses. Before the clutch 24, a ball valve 25 is installed to shut off by hand.
I n Figur 2 ist das thermische Überwachungssystem des DampfWasser-Mischers dargestellt. An einer seitlich abzweigenden Muffe 26 ist eine Steuereinrichtung 6 angebaut , die mit einem in der Zeichnung nicht sichtbaren Thermofühler verbunden ist . Der Thermofühler mißt die Temperatur des aus dem Mischbehäiter 3 austretenden Wassers . Die Steuereinrichtung 6 wirkt ebenfalls auf den Antrieb 8 des Dampfventils 4. Über diese Steuereinrichtung und den Thermofühler wird die gewünschte maximale Temperatur des austretenden Wassers eingestellt. In Figure 2, the thermal monitoring system of the steam-water mixer is shown. On a laterally branching sleeve 26, a control device 6 is attached, which is connected to a thermal sensor not visible in the drawing. The thermocouple measures the temperature of the water emerging from the mixing container 3. The control device 6 also acts on the drive 8 of the steam valve 4. The desired maximum temperature of the escaping water is set via this control device and the thermal sensor.
Über eine Rohrschelle 27 und Profilstücke 28 ist der Dampf-Wasser-Mischer mit einer Bodenplatte 29 fest verbunden . Der dargestellte Dampf-Wasser-Mischer liefert zwischen 500 und 2.500 Liter pro Stunde bis zu 90 Crad Celsius heißen Wassers und ist ausge legt auf einen Anschluß an ein Dampfnetz mit 4 bar . Für eine größere Heißwassermenge ist ein entsprechend größerer Mischer emzusetzen . Die besonders hohe Betriebssicherheit ergibt sich auch durch die kurze Schaltzeit des einen Schlitzinitiator aufweisenden Durchflußmessers 1 . The steam-water mixer is firmly connected to a base plate 29 via a pipe clamp 27 and profile pieces 28. The steam-water mixer shown supplies between 500 and 2,500 liters per hour up to 90 Crad Celsius hot water and is exhausted puts on a connection to a steam network with 4 bar. A correspondingly larger mixer must be used for a larger amount of hot water. The particularly high operational reliability also results from the short switching time of the flow meter 1 having a slot initiator.
I n Figur 3 ist das zu dem Mischer nach den Figuren 1 , 2 und 4 zugehörige Schaltbild dargestellt. Der Mischer wird mit sem Schalter 30 eingeschaltet. Zwischen dem Schalter 30 und dem Stromnetz liegen zwei Sicherungen 31 , 32. Das zentrale Bauelement in dieser Schaltung ist das Trennschaltgerät 33. Es empfängt die den Zustand des Mischers beschreibenden Signale vom Durchflußmesser 1 und vom Thermofühler 34. Ü ber die Anschlüsse 35 und 36 wird das Trennschaltgerät mit elektrischer Energie versorgt. Durchflußmesser 1 und Thermofühler 34 steuern innerhalb des Trennschaltgerätes 2 die Relais 35 und 36. Die Schaltung ist, wie aus Figur 3 zu erkennen ist, so ausgelegt , daß die beiden weiteren Relais 37 und 38 nur dann den Stromkreis scniießen , wenn beide Relais 35 und 36 gleichzeitig angesprochen sind . In diesem Fall wird das Magnetventil 39 unter Strom gesetzt , welches das Dampfventil 4 öffnet. Zum .Erhöhen der Betriebssicherheit ist der Ansteuerstromkreis des Magnetventils 39 durch zwei , unmittelbar vor und hinter das Magnetventil 39 geschaltete Sicherungen 40 , 41 abgesichert. FIG. 3 shows the circuit diagram associated with the mixer according to FIGS. 1, 2 and 4. The mixer is switched on with switch 30. Between the switch 30 and the power supply are two fuses 31, 32. The central component in this circuit is the isolating switch 33. It receives the signals describing the state of the mixer from the flow meter 1 and from the thermocouple 34. Via the connections 35 and 36 the isolating switch is supplied with electrical energy. Flow meter 1 and thermal sensor 34 control the relays 35 and 36 within the isolating switching device 2. The circuit is, as can be seen from FIG. 3, designed so that the two further relays 37 and 38 only close the circuit when both relays 35 and 36 are addressed at the same time. In this case, the solenoid valve 39 is energized, which opens the steam valve 4. To increase the operational safety, the control circuit of the solenoid valve 39 is protected by two fuses 40, 41 which are connected directly in front of and behind the solenoid valve 39.
I n Fig . 4 ist ein Längsschnitt durch einen Mischbehälter entsprechend einer Ausführungsform der Erfindung dargestellt. Hier , wie in den übrigen Zeichnungen , werden für gleiche Teile und gleiche Bezeichnungen die gleichen Bezugszeichen verwendet. I m Mischbehälter 3 ist zwischen dem als Hohlzyiinder mit Boden ausgebildeten Sintermaterial 13 und der I nnenwand 43 des Misch behälters 3 ein weiterer aus einem Lochblech bestehender Hohl zyiinder 44 mit einem konzentrisch darin angeordneten Honlzyiin der 45 angebracht. Auch der innere Hohlzylinder 45 Desteht aus einem Lochblech. Der Zylinder 45 liegt eng an dem Sintermaterial 13 und der Hohlzylinder 44 eng an der Innenwand 43 des Mischbehälters 3 an. Beide Hohlzylinder 44 und 45 sind an mrer oberen Deckfläche miteinander verbunden und haben jeweils einen eigenen Boden. Innerhalb des so gebildeten Raumes 42 sind als Fullkorper Edelstahl-Zylinder von 1 cm Durchmesser und 1 cm Länge angeordnet. Durch diese Füllkörper, durch die das heiße Wasser hindurchtreten muß, sinkt die Geräuschbelastung von 68,5 dB (A) auf 63,5 dB (A). Der wichtigste Vorteil der Füllkörper liegt jedoch darin, daß die Temperaturschwankungen des austretenden heißen Wassers stark verringert werden. Wenn z. B. die Temperatur des austretenden heißen Wassers ohne Fullkorper um etwa 10 °C schwankt, bewirken die Füllkörper eine Scnwankungs-Dämpfung auf etwa 2 °C. I n Fig. 4 shows a longitudinal section through a mixing container according to an embodiment of the invention. Here, as in the other drawings, the same reference numerals are used for the same parts and the same designations. I m mixing container 3 is between the sintered material 13 formed as a hollow cylinder with bottom and the inner wall 43 of the mixing container 3, another hollow cylinder 44 consisting of a perforated plate with a concentrically arranged honing cylinder the 45 attached. The inner hollow cylinder 45 also consists of a perforated plate. The cylinder 45 lies closely against the sintered material 13 and the hollow cylinder 44 closely against the inner wall 43 of the mixing container 3. Both hollow cylinders 44 and 45 are connected to one another on the upper cover surface and each have their own base. Within the space 42 thus formed, stainless steel cylinders of 1 cm in diameter and 1 cm in length are arranged as full bodies. Through this packing, through which the hot water must pass, the noise level drops from 68.5 dB (A) to 63.5 dB (A). However, the most important advantage of the packing is that the temperature fluctuations of the hot water escaping are greatly reduced. If e.g. B. fluctuates the temperature of the emerging hot water without full body by about 10 ° C, the packing cause a fluctuation damping to about 2 ° C.

Claims

P a t e n t a n s p r ü c h e P a t e n t a n s r u c h e
Dampf-Wasser-Mischer mit je einem Einlaß für Wasserdampf und für Wasser, mit einem Behälter (3) zum Mischen von Dampf und Wasser, mit einem Auslaß (7) dieses Mischbehälters (3) für das erwärmte Wasser, mit einem innerhalb des Mischbehälters (3) zwischen dem oder den Dampf-Einlässen (11) und dem oder den Wasser-Einlässen angeordneten Sinter Material (13), das so angeordnet ist, daß der in den Mischbehälter (3) eintretende Dampf nur durch das Sinter-Material (13) hindurch zum Wasser-Einlaß (12) oder zum Auslaß (14) des Mischbehälters (3) gelangt, Steam-water mixer, each with an inlet for steam and for water, with a container (3) for mixing steam and water, with an outlet (7) of this mixing container (3) for the heated water, with an inside the mixing container ( 3) sintered material (13) arranged between the steam inlet (s) (11) and the water inlet (s), which is arranged such that the steam entering the mixing container (3) only through the sintered material (13) passes through to the water inlet (12) or the outlet (14) of the mixing container (3),
gekennzeichnet durch marked by
im Raum (42) zwischen Sintermaterial (13) und Innenwand des Mischbehälters (3) angeordnete Füllkörper. Filling bodies arranged in the space (42) between the sintered material (13) and the inner wall of the mixing container (3).
Mischer nach Anspruch 1, Mixer according to claim 1,
dadurch gekennzeichnet, characterized,
daß die Füllkörper zylinderförmig ausgebildet sind. that the packing is cylindrical.
Mischer nach Anspruch 2, Mixer according to claim 2,
dadurch gekennzeichnet, characterized,
daß der Durchmesser und die Höhe der Füllkörper etwa gleich sind. that the diameter and the height of the packing are approximately the same.
Mischer nach Anspruch 1, Mixer according to claim 1,
dadurch gekennzeichnet, characterized,
daß die Füllkörper aus Metall, insbesondere aus Edelstahl, bestehen. that the packing consists of metal, especially stainless steel.
EP90914145A 1989-09-13 1990-09-05 Steam/water mixer Withdrawn EP0491815A1 (en)

Applications Claiming Priority (2)

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DE3930579A DE3930579A1 (en) 1989-09-13 1989-09-13 STEAM WATER MIXER
DE3930579 1989-09-13

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EP0491815A1 true EP0491815A1 (en) 1992-07-01

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US (1) US5194187A (en)
EP (1) EP0491815A1 (en)
JP (1) JPH05500722A (en)
DE (1) DE3930579A1 (en)
WO (1) WO1991004523A1 (en)

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DE3930579A1 (en) 1991-04-04
JPH05500722A (en) 1993-02-12
WO1991004523A1 (en) 1991-04-04
US5194187A (en) 1993-03-16
DE3930579C2 (en) 1991-07-18

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