EP1198686B1 - Mixing valve - Google Patents

Mixing valve Download PDF

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Publication number
EP1198686B1
EP1198686B1 EP00951395A EP00951395A EP1198686B1 EP 1198686 B1 EP1198686 B1 EP 1198686B1 EP 00951395 A EP00951395 A EP 00951395A EP 00951395 A EP00951395 A EP 00951395A EP 1198686 B1 EP1198686 B1 EP 1198686B1
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EP
European Patent Office
Prior art keywords
mixing valve
valve according
impeller
hollow shaft
housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP00951395A
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German (de)
French (fr)
Other versions
EP1198686A1 (en
Inventor
Hans-Ulrich Kluth
Wolfgang Müller
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.)
Garrett Motion SARL
Original Assignee
Honeywell Technologies SARL
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Publication date
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Publication of EP1198686A1 publication Critical patent/EP1198686A1/en
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Publication of EP1198686B1 publication Critical patent/EP1198686B1/en
Anticipated expiration legal-status Critical
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0027—Varying behaviour or the very pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F04D13/06—Units comprising pumps and their driving means the pump being electrically driven
    • F04D13/0606—Canned motor pumps
    • F04D13/064—Details of the magnetic circuit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/02—Stopping of pumps, or operating valves, on occurrence of unwanted conditions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/04—Shafts or bearings, or assemblies thereof
    • F04D29/042—Axially shiftable rotors
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/6198—Non-valving motion of the valve or valve seat
    • Y10T137/6253—Rotary motion of a reciprocating valve
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8593—Systems
    • Y10T137/86493—Multi-way valve unit
    • Y10T137/86815—Multiple inlet with single outlet

Definitions

  • the present invention relates to a mixing valve according to the preamble of claim 1.
  • Mixing valves and in particular three-way mixing valves are used in heating systems to connect the heating flow controlled with the boiler flow or the heating return to z. B. by adding water of the heating return to influence the temperature of the water in the heating flow. In the heating flow then usually the heating medium is moved through the system circulating pump is arranged.
  • a mixing valve with the features of the preamble of claim 1 is disclosed in DE 21 070 000.
  • a mixing valve housing 10 has an inlet port 12 for the boiler flow, an outlet 14 for the heating flow and a not visible in this illustration inlet port for the heating return.
  • the inlet port 12 is connected to a lower chamber 16, the heating flow is connected to a central chamber 18 and the heating return is connected to an upper chamber 20. All chambers 16, 18, and 20 are connected to each other via mutually aligned bores.
  • a hollow and axially displaceable shaft 22 passes through these bores and carries an impeller 24 in the region of the middle chamber 18.
  • the upper chamber 20 is integrally formed on a housing cover 26, the use of the impeller 24 with the hollow shaft 22 in the middle Chamber 18 allowed. In the position shown in Fig. 1, the hollow shaft 22 is with her On the other hand, provide perforations 28 in the hollow shaft 22 in the upper chamber 20 a connection between the heater return and the impeller 24 and the middle chamber 18 ago.
  • the hollow shaft 22 protrudes upwards out of the upper chamber 20 and is connected to the rotor 30 of a motor whose stator winding 32 is arranged in a pot-shaped housing 34 which is flanged to the housing cover 26.
  • the stator winding 32 is axially divided into two windings 32 'and 32 "to achieve different positions of the rotor 30 and thus the hollow shaft 22 by separately or simultaneously energizing the windings 32', 32".
  • only the lower winding 32 is energized to drive the impeller 24 via the rotor 30 and the hollow shaft 22, but the excitation is sufficient to achieve the required pumping capacity.
  • An insert 36 concentrically mounted on the cup-shaped housing 34 in the lid region serves to guide the hollow shaft 22.
  • a sleeve 38 which is sealed via O-rings 40 and 42 to the insert 36 and to an attachment on the housing cover 26, shields the sleeve Stator winding 32 against the flowing medium.
  • the pressurized surfaces of the pump body 24 and the hollow shaft 22 existing control body are chosen so that they are the same size and allow pressure equalization.
  • Fig. 2 shows a position of the mixing valve with integrated circulation pump, in which the boiler flow is connected to the heating flow and the admixture of the heating return is separated. This position is achieved by energizing the stator winding 32 'alone, whereby the rotor 30 is drawn into this, so that the lower end of the hollow shaft 22 unimpeded access of the boiler flow to the impeller 24 releases and the perforations 28 are at a level where no Connection is made more with the heating return.
  • Fig. 3 shows the position of the mixing valve with integrated pump, in which both the boiler flow and the heating return are connected to the heating flow. This position is achieved by energizing both stator windings 32 'and 32 ", whereby the rotor 30 occupies a central position, so that the lower end of the hollow shaft 22 allows the partial access of the boiler lead and the perforations 28 are at a level at least partially a connection with the heating return is made.
  • FIGS. 4 to 6 will only be described insofar as it differs from the comparative example shown in FIGS. 1 to 3. Identical components are provided with the same reference numerals; Functionally applied components was preceded by a 1 and new components were provided with separate reference numerals.
  • the stator 132 of the motor comprises three stacked stator windings 132 ', 132 "and 132''', wherein the rotor 30 by separate or common excitation of the stator winding 3 can assume different positions, as was the case with the comparative example according to FIGS.
  • the rotor 30 is connected via a sleeve-shaped intermediate member 50, which is not made of iron, with a motor shaft 122 by means of a nut 52.
  • the motor shaft 122 is mounted in a lower housing approach 54 and as a pump impeller 124 is attached to the motor shaft 122 and rotatable together with this.
  • the impeller 124 is seated in a receiving housing 56, which operates as a sliding control body and consists of two symmetrical parts, between which the impeller 124 is located.
  • the receiving housing 56 has two cylindrical projections 58, 58 ', which are provided with passages 60, 60', which z. B. can be specified by axially parallel distributed over the circumference holes.
  • the lugs 58, 58 ' can also be predetermined by two concentric sleeves, which are connected to one another via radial webs.
  • the vanes of the impeller 124 extend radially over a region which lies outside the medium flowing through the passages 60, 60 '.
  • Two shield plates 62, 62 'extending radially outward from the cylindrical projections 58, 58' enclose the impeller 124 between them and concentrate the passing medium.
  • the shield plates 62, 62 ' can be latched over the circumference at different locations at a distance from each other.
  • the Shield plates 62, 62 ' here not recognizable aligned U-shaped recesses in the edge, which engage over a pin inserted into the housing 10 64 so that they are axially movable but held in the same direction.
  • Circlips 66, 66 ' secure the receiving housing 56 to the motor shaft 122 so that it is axially movable with the motor shaft 122 when the stator windings 132', 132 '' and 132 '''are energized accordingly to the rotor 30 and thus the Move control body.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Multiple-Way Valves (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

The invention relates to a mixing valve with at least two inlets and at least one outlet. A control element is configured as a pump wheel controls the fluid connection between the inlets and the outlets. The pump wheel is connected to a hollow shaft which is rotated by an electric motor and axially displaced through selective actuation of axially displaced stator segments. In a fist axial position of the pump wheel, a first inlet is communicated with the outlet and a second inlet is shut off, and in a second axial position the second inlet is communicated with the outlet and the first inlet is shut off. In a third an intermediate axial position, the two inlets communicate with the outlet allowing fluid mixing within a pump chamber. In a further embodiment of the device, the pump wheel includes a rotatable member to impel fluid through the pump chamber and the outlet. The device unites the mixing valve and the circulation pump in one fitting.

Description

Die vorliegende Erfindung bezieht sich auf ein Mischventil gemäß dem Oberbegriff von Anspruch 1.The present invention relates to a mixing valve according to the preamble of claim 1.

Mischventile und insbesondere Dreiwege-Mischventile werden bei Heizungsanlagen benutzt, um den Heizungsvorlauf gesteuert mit dem Kesselvorlauf bzw. dem Heizungsrücklauf zu verbinden, um z. B. durch Beimischung von Wasser des Heizungsrücklaufes die Temperatur des Wassers im Heizungsvorlauf zu beeinflussen. Im Heizungsvorlauf ist sodann üblicherweise eine das Heizmedium durch die Anlage bewegende Umwälzpumpe angeordnet.Mixing valves and in particular three-way mixing valves are used in heating systems to connect the heating flow controlled with the boiler flow or the heating return to z. B. by adding water of the heating return to influence the temperature of the water in the heating flow. In the heating flow then usually the heating medium is moved through the system circulating pump is arranged.

Ein Mischventil mit den Merkmalen des Oberbegriffs von Patentanspruch 1 ist in DE 21 070 000 offenbart.A mixing valve with the features of the preamble of claim 1 is disclosed in DE 21 070 000.

Hiervon ausgehend ist es die Aufgabe der vorliegenden Erfindung, das Mischventil und die Umwälzpumpe in einer Armatur zu vereinigen. Die Lösung dieser Aufgabe gelingt gemäß den Merkmalen von Patentanspruch 1. Weitere vorteilhafte Ausgestaltungen der Erfindung sind den abhängigen Ansprüchen entnehmbar.On this basis, it is the object of the present invention to combine the mixing valve and the circulation pump in a valve. The solution of this object is achieved according to the features of claim 1. Further advantageous embodiments of the invention are the dependent claims removed.

Anhand von in den Figuren der beiliegenden Zeichnung dargestellten Ausführungsbeispielen sei im folgenden die Erfindung näher erläutert. Es zeigen:

  • Fig. 1 eine Armatur gemäß einem Vergleichsbeispiel in einer Stellung, bei der der Heizungsrücklauf mit dem Heizungsvorlauf verbunden ist;
  • Fig. 2 die Armatur nach Fig. 1 in einer Stellung, bei der der Kesselvorlauf mit dem Heizungsvorlauf verbunden ist;
  • Fig.3 die Armatur nach Fig. 1 in einer Zwischenstellung, bei der der Kesselvorlauf und der Heizungsrücklauf mit dem Heizungsvorlauf verbunden sind.
  • Fig. 4 eine erfindungsgemäße Armatur gemäß dem Ausführungsbeispiel, bei der der Heizungsrücklauf mit dem Heizungsvorlauf verbunden ist;
  • Fig. 5 die erfindungsgemäße Armatur gemäß Fig. 4, bei der der Kesselvorlauf mit dem Heizungsvorlauf verbunden ist; und
  • Fig. 6 die erfindungsgemäße Armatur gemäß Fig. 4, bei der der Kesselvorlauf und der Heizungsrücklauf mit dem Heizungsvorlauf verbunden sind.
On the basis of embodiments illustrated in the figures of the accompanying drawings, the invention is explained in more detail below. Show it:
  • 1 shows a fitting according to a comparative example in a position in which the heating return is connected to the heating flow;
  • Figure 2 shows the valve of Figure 1 in a position in which the boiler flow is connected to the heating flow.
  • 3, the valve of FIG. 1 in an intermediate position in which the boiler flow and the heating return are connected to the heating flow.
  • 4 shows an inventive valve according to the embodiment, in which the heating return is connected to the heating flow;
  • 5 shows the fitting according to the invention as shown in Figure 4, in which the boiler flow is connected to the heating flow. and
  • Fig. 6, the inventive valve according to FIG. 4, in which the boiler flow and the heating return are connected to the heating flow.

Gemäß Fig. 1 besitzt ein Mischventilgehäuse 10 einen Einlaßstutzen 12 für den Kesselvorlauf, einen Auslaßstutzen 14 für den Heizungsvorlauf und einen in dieser Darstellung nicht sichtbaren Einlaßstutzen für den Heizungsrücklauf. Der Einlaßstutzen 12 ist mit einer unteren Kammer 16 verbunden, der Heizungsvorlauf ist an eine mittlere Kammer 18 angeschlossen und der Heizungsrücklauf ist an eine obere Kammer 20 angeschlossen. Alle Kammern 16, 18, und 20 sind über miteinander fluchtende Bohrungen miteinander verbunden. Eine hohle und axial verschiebbare Welle 22 durchsetzt diese Bohrungen und trägt ein Pumpenrad 24 im Bereich der mittleren Kammer 18. Die obere Kammer 20 ist an einem Gehäusedeckel 26 angeformt, der bei seiner Entfernung den Einsatz des Pumpenrades 24 mit der hohlen Welle 22 in die mittlere Kammer 18 gestattet. In der in Fig. 1 dargestellten Stellung liegt die hohle Welle 22 mit ihrem offenen unteren Ende am Boden der unteren Kammer 16 an und versperrt somit den Zutritt des Kesselvorlaufs in das Pumpenrad 24 und die mittlere Kammer 18. Hingegen stellen Perforierungen 28 in der hohlen Welle 22 im Bereich der oberen Kammer 20 eine Verbindung zwischen dem Heizungsrücklauf und dem Pumpenrad 24 bzw. der mittleren Kammer 18 her.Referring to FIG. 1, a mixing valve housing 10 has an inlet port 12 for the boiler flow, an outlet 14 for the heating flow and a not visible in this illustration inlet port for the heating return. The inlet port 12 is connected to a lower chamber 16, the heating flow is connected to a central chamber 18 and the heating return is connected to an upper chamber 20. All chambers 16, 18, and 20 are connected to each other via mutually aligned bores. A hollow and axially displaceable shaft 22 passes through these bores and carries an impeller 24 in the region of the middle chamber 18. The upper chamber 20 is integrally formed on a housing cover 26, the use of the impeller 24 with the hollow shaft 22 in the middle Chamber 18 allowed. In the position shown in Fig. 1, the hollow shaft 22 is with her On the other hand, provide perforations 28 in the hollow shaft 22 in the upper chamber 20 a connection between the heater return and the impeller 24 and the middle chamber 18 ago.

Die hohle Welle 22 ragt nach oben aus der oberen Kammer 20 heraus und ist mit dem Läufer 30 eines Motors verbunden, dessen Statorwicklung 32 in einem topfförmigen Gehäuse 34 angeordnet ist, welches an dem Gehäusedeckel 26 angeflanscht ist. Die Statorwicklung 32 ist axial in zwei Wicklungen 32' und 32" unterteilt, um durch getrennte oder gleichzeitige Erregung der Wicklungen 32', 32" unterschiedliche Stellungen des Läufers 30 und somit der hohlen Welle 22 zu erzielen. Im in Fig. 1 dargestellten Fall ist nur die untere Wicklung 32" erregt, um das Pumpenrad 24 über den Läufer 30 und die hohle Welle 22 anzutreiben, wobei aber die Erregung ausreichend ist, um die geforderte Pumpenleistung zu erzielen.The hollow shaft 22 protrudes upwards out of the upper chamber 20 and is connected to the rotor 30 of a motor whose stator winding 32 is arranged in a pot-shaped housing 34 which is flanged to the housing cover 26. The stator winding 32 is axially divided into two windings 32 'and 32 "to achieve different positions of the rotor 30 and thus the hollow shaft 22 by separately or simultaneously energizing the windings 32', 32". In the case shown in Fig. 1, only the lower winding 32 "is energized to drive the impeller 24 via the rotor 30 and the hollow shaft 22, but the excitation is sufficient to achieve the required pumping capacity.

Ein an dem topfförmigen Gehäuse 34 im Deckelbereich innen konzentrisch angebrachter Einsatz 36 dient der Führung der hohlen Welle 22. Eine Hülse 38, die über O-Ringe 40 und 42 an dem Einsatz 36 und an einem Aufsatz an dem Gehäusedeckel 26 abgedichtet ist, schirmt die Statorwicklung 32 gegen das fließende Medium ab. Die druckbeaufschlagten Flächen des aus Pumpenrad 24 und hohler Welle 22 bestehenden Steuerkörpers sind so gewählt, dass sie gleich groß sind und einen Druckausgleich gestatten.An insert 36 concentrically mounted on the cup-shaped housing 34 in the lid region serves to guide the hollow shaft 22. A sleeve 38, which is sealed via O-rings 40 and 42 to the insert 36 and to an attachment on the housing cover 26, shields the sleeve Stator winding 32 against the flowing medium. The pressurized surfaces of the pump body 24 and the hollow shaft 22 existing control body are chosen so that they are the same size and allow pressure equalization.

Fig. 2 zeigt eine Stellung des Mischventils mit integrierter Umwälzpumpe, bei der der Kesselvorlauf mit dem Heizungsvorlauf verbunden ist und die Beimischung des Heizungsrücklaufs abgetrennt ist. Diese Stellung wird erzielt durch Erregung der Statorwicklung 32' alleine, wodurch der Läufer 30 in diese hineingezogen wird, so daß das untere Ende der hohlen Welle 22 den ungehinderten Zutritt des Kesselvorlaufs zum Pumpenrad 24 freigibt und die Perforierungen 28 auf einer Höhe liegen, wo keine Verbindung mehr mit dem Heizungsrücklauf hergestellt wird.Fig. 2 shows a position of the mixing valve with integrated circulation pump, in which the boiler flow is connected to the heating flow and the admixture of the heating return is separated. This position is achieved by energizing the stator winding 32 'alone, whereby the rotor 30 is drawn into this, so that the lower end of the hollow shaft 22 unimpeded access of the boiler flow to the impeller 24 releases and the perforations 28 are at a level where no Connection is made more with the heating return.

Fig. 3 zeigt die Stellung des Mischventils mit integrierter Pumpe, bei der sowohl der Kesselvorlauf als auch der Heizungsrücklauf mit dem Heizungsvorlauf verbunden sind. Diese Stellung wird erzielt durch Erregung beider Statorwicklungen 32' und 32", wodurch der Läufer 30 eine Mittelstellung einnimmt, so daß das untere Ende der hohlen Welle 22 den teilweisen Zutritt des Kesselvorlaufs erlaubt und die Perforierungen 28 auf einer Höhe liegen, bei der zumindest teilweise eine Verbindung mit dem Heizungsrücklauf hergestellt ist.Fig. 3 shows the position of the mixing valve with integrated pump, in which both the boiler flow and the heating return are connected to the heating flow. This position is achieved by energizing both stator windings 32 'and 32 ", whereby the rotor 30 occupies a central position, so that the lower end of the hollow shaft 22 allows the partial access of the boiler lead and the perforations 28 are at a level at least partially a connection with the heating return is made.

Das in den Figuren 4 bis 6 gezeigte Ausführungsbeispiel der Erfindung sei nur insoweit beschrieben, als es sich von dem in den Figuren 1 bis 3 gezeigten Vergleichsbeispiel unterscheidet. Gleiche Bauelemente sind mit den gleichen Bezugszeichen versehen; funktionell angewandelten Bauelementen wurde eine 1 vorangestellt und neue Bauelemente wurden mit gesonderten Bezugszeichen versehen.The embodiment of the invention shown in FIGS. 4 to 6 will only be described insofar as it differs from the comparative example shown in FIGS. 1 to 3. Identical components are provided with the same reference numerals; Functionally applied components was preceded by a 1 and new components were provided with separate reference numerals.

Gemäß Fig. 4 umfaßt der Stator 132 des Motors drei übereinander angeordnete Statorwicklungen 132', 132" und 132''', wobei der Läufer 30 durch getrennte oder gemeinsame Erregung der Statorwicklung 3 unterschiedliche Stellungen einnehmen kann, wie dies auch bei dem Vergleichsbeispiel gemäß den Figuren 1 bis 3 der Fall war.4, the stator 132 of the motor comprises three stacked stator windings 132 ', 132 "and 132''', wherein the rotor 30 by separate or common excitation of the stator winding 3 can assume different positions, as was the case with the comparative example according to FIGS.

Der Läufer 30 ist über ein hülsenförmiges Zwischenelement 50, das nicht aus Eisen besteht, mit einer Motorwelle 122 mittels einer Mutter 52 verbunden. Die Motorwelle 122 ist in einem unteren Gehäuseansatz 54 gelagert und als Pumpenrad ist ein Flügelrad 124 auf die Motorwelle 122 aufgesteckt und mit dieser zusammen drehbar. Das Flügelrad 124 sitzt in einem Aufnahmegehäuse 56, das als verschiebbarer Steuerkörper arbeitet und aus zwei symmetrischen Teilen besteht, zwischen denen sich das Flügelrad 124 befindet. Das Aufnahmegehäuse 56 weist zwei zylindrische Ansätze 58, 58' auf, die mit Durchführungen 60, 60' versehen sind, welche z. B. durch achsparallele über den Umfang verteilte Bohrungen vorgegeben sein können. Prinzipiell können die Ansätze 58, 58' auch durch zwei konzentrische Hülsen vorgegeben sein, die über radiale Stege miteinander verbunden sind. Die Durchführungen 60, 60' stellen die Verbindung zwischen dem Kesselvorlauf KV, dem Heizungsvorlauf HV und dem Heizungsrücklauf HR her, wobei das Flügelrad 124 den Transport des Mediums bewirkt.The rotor 30 is connected via a sleeve-shaped intermediate member 50, which is not made of iron, with a motor shaft 122 by means of a nut 52. The motor shaft 122 is mounted in a lower housing approach 54 and as a pump impeller 124 is attached to the motor shaft 122 and rotatable together with this. The impeller 124 is seated in a receiving housing 56, which operates as a sliding control body and consists of two symmetrical parts, between which the impeller 124 is located. The receiving housing 56 has two cylindrical projections 58, 58 ', which are provided with passages 60, 60', which z. B. can be specified by axially parallel distributed over the circumference holes. In principle, the lugs 58, 58 'can also be predetermined by two concentric sleeves, which are connected to one another via radial webs. The passages 60, 60 'establish the connection between the boiler feed KV, the heating flow HV and the heating return HR, wherein the impeller 124 causes the transport of the medium.

Die Flügel des Flügelrades 124 erstrecken sich hierbei radial über einen Bereich, der außerhalb des durch die Durchführungen 60, 60' fließenden Mediums liegt. Zwei sich von den zylindrischen Ansätzen 58, 58' radial nach außen erstreckende Schirmbleche 62, 62' schließen das Flügelrad 124 zwischen sich ein und bündeln das durchtretende Medium. Die Schirmbleche 62, 62' können über den Umfang an verschiedenen Stellen im Abstand voneinander verrastet sein. Ferner weisen die Schirmbleche 62, 62' hier nicht erkennbare miteinander fluchtende U-förmige Ausnehmungen im Rand auf, welche einen in das Gehäuse 10 eingesetzten Stift 64 übergreifen, so daß sie axial beweglich aber in Drehrichtung festgehalten sind. Sicherungsringe 66, 66' sichern das Aufnahmegehäuse 56 auf der Motorwelle 122, so daß es mit der Motorwelle 122 axial beweglich ist, wenn die Statorwicklungen 132', 132'' und 132''' entsprechend erregt werden, um den Läufer 30 und damit den Steuerkörper zu verschieben.In this case, the vanes of the impeller 124 extend radially over a region which lies outside the medium flowing through the passages 60, 60 '. Two shield plates 62, 62 'extending radially outward from the cylindrical projections 58, 58' enclose the impeller 124 between them and concentrate the passing medium. The shield plates 62, 62 'can be latched over the circumference at different locations at a distance from each other. Furthermore, the Shield plates 62, 62 'here not recognizable aligned U-shaped recesses in the edge, which engage over a pin inserted into the housing 10 64 so that they are axially movable but held in the same direction. Circlips 66, 66 'secure the receiving housing 56 to the motor shaft 122 so that it is axially movable with the motor shaft 122 when the stator windings 132', 132 '' and 132 '''are energized accordingly to the rotor 30 and thus the Move control body.

Claims (11)

  1. Mixing valve, in particular a three-way mixing valve, with a body (10) and inlets and outlets (KV, HR, HV) on the body (10) and a control body which is arranged axially displaceably inside the body (10) to control the connection between the inlets and outlets located on different planes,
    characterized in that
    an impeller (124) is provided inside the control body, which is configured as a housing (56) mounted fixedly in rotation.
  2. Mixing valve according to Claim 1, characterized in that the housing (56) consists of two mirror-symmetrical parts which are joined to each other and accommodate the impeller (124) between them, the impeller (124) being mounted on a motor shaft (122) which is mounted rotatably inside the housing (56).
  3. Mixing valve according to Claim 2, characterized in that the housing (56) is axially displaceably guided and in that means (64) are provided to secure it against rotation.
  4. Mixing valve according to Claim 3, characterized in that the housing (56) has two umbrella-shaped parts (62, 62') from which cylindrical extensions (58, 58') with axial bores (60, 60') extend upwards and downwards.
  5. Mixing valve according to Claim 4, characterized in that the impeller is configured as a vane wheel (124) with vanes extending radially over a zone that lies outside the bores (60, 60').
  6. Mixing valve according to one or more of Claims 1 to 5, characterized in that the body (10) has: a lower chamber (16) connected to the boiler flow (KV), a middle chamber (18) connected to the heating flow (HV), and an upper chamber (20) connected to the heating return (HR), all chambers being interconnected via the hollow shaft (22) or the cylindrical extensions (58, 58') with their bores (60, 60'), which extend through the partition walls between the chambers.
  7. Mixing valve according to any one of Claims 1 to 6, characterized by a pot-shaped casing (34) mounted on top of the body (10) of the mixing valve, which accommodates the stator winding (32, 132) and the armature (30) of the motor.
  8. Mixing valve according to Claim 7, characterized by sealing means (38, 40, 42) between the stator winding (32) and the armature (30) of the motor.
  9. Mixing valve according to Claim 1, characterized in that the impeller (124) is connected to a hollow shaft (66) which is connected to the armature (30) of a motor, the said motor having an axially subdivided and separately excitable stator winding (132).
  10. Mixing valve according to Claim 9, characterized in that the hollow shaft (66, 66') extends on both sides of the impeller (124) so that, in an end position on the body (10), a first inlet (KV) is sealed off and a connection is made to a second inlet (HR) via perforations in the hollow shaft (66, 66').
  11. Mixing valve according to Claim 10, characterized in that the active, pressure-exposed faces of the control body consisting of impeller (124) and hollow shaft are equal in area.
EP00951395A 1999-07-24 2000-07-18 Mixing valve Expired - Lifetime EP1198686B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19934819 1999-07-24
DE19934819A DE19934819C1 (en) 1999-07-24 1999-07-24 Three-way mixing valve for central heating circuit has axial displacement of pump wheel within valve housing used for controlling flow between entry and exit connections lying in different planes
PCT/EP2000/006841 WO2001007836A1 (en) 1999-07-24 2000-07-18 Mixing valve

Publications (2)

Publication Number Publication Date
EP1198686A1 EP1198686A1 (en) 2002-04-24
EP1198686B1 true EP1198686B1 (en) 2006-09-20

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EP00951395A Expired - Lifetime EP1198686B1 (en) 1999-07-24 2000-07-18 Mixing valve

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US (1) US6619935B1 (en)
EP (1) EP1198686B1 (en)
AT (1) ATE340341T1 (en)
CA (1) CA2380278C (en)
DE (2) DE19934819C1 (en)
WO (1) WO2001007836A1 (en)

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Also Published As

Publication number Publication date
US6619935B1 (en) 2003-09-16
DE50013498D1 (en) 2006-11-02
EP1198686A1 (en) 2002-04-24
ATE340341T1 (en) 2006-10-15
WO2001007836A1 (en) 2001-02-01
CA2380278A1 (en) 2001-02-01
DE19934819C1 (en) 2000-12-07
CA2380278C (en) 2008-09-23

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