EP1884720A1 - Assembly for a compact heating installation - Google Patents

Assembly for a compact heating installation Download PDF

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Publication number
EP1884720A1
EP1884720A1 EP06015791A EP06015791A EP1884720A1 EP 1884720 A1 EP1884720 A1 EP 1884720A1 EP 06015791 A EP06015791 A EP 06015791A EP 06015791 A EP06015791 A EP 06015791A EP 1884720 A1 EP1884720 A1 EP 1884720A1
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EP
European Patent Office
Prior art keywords
heating
assembly according
water
heat exchanger
valve
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.)
Granted
Application number
EP06015791A
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German (de)
French (fr)
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EP1884720B1 (en
Inventor
Olav Jensen
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Grundfos Management AS
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Grundfos Management AS
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Publication date
Application filed by Grundfos Management AS filed Critical Grundfos Management AS
Priority to PL06015791T priority Critical patent/PL1884720T3/en
Priority to EP06015791.4A priority patent/EP1884720B1/en
Publication of EP1884720A1 publication Critical patent/EP1884720A1/en
Application granted granted Critical
Publication of EP1884720B1 publication Critical patent/EP1884720B1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/14—Arrangements for connecting different sections, e.g. in water heaters 
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/48—Water heaters for central heating incorporating heaters for domestic water
    • F24H1/52—Water heaters for central heating incorporating heaters for domestic water incorporating heat exchangers for domestic water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/14—Arrangements for connecting different sections, e.g. in water heaters 
    • F24H9/142—Connecting hydraulic components

Definitions

  • the invention relates to a structural unit for a heating system with two heating circuits according to the features indicated in the preamble of claim 1.
  • Such units are state of the art and are typically used in so-called gas heating, which are often built as compact wall units.
  • These compact devices have a primary heat exchanger in which circulated water is heated as a heat transfer medium, which is supplied either to a space heating heating circuit or a heat exchanger, typically a plate heat exchanger, via which the domestic water heating takes place.
  • the assembly typically includes a built-up of several injection molded plastic fittings and pump housing, which is formed on the rear side for connection of the plate heat exchanger.
  • the assembly also includes all other electrical, mechanical and / or hydraulic components, as far as they can be usefully merged into the unit. These are typically filters, dirt / air separators, switching valves, throttle valves, temperature and pressure sensors, and the like.
  • EP 1 528 330 Al Such a unit in which connect three housing parts under inclusion of the pump unit to each other and are connected at the back by the heat exchanger, is off EP 1 528 330 Al known.
  • This unit is highly integrated and consists essentially of a central pump housing part and two laterally adjoining valve body parts.
  • the heating of the service water takes place as soon as a service water flow within the unit is detected. Then, the switching of a directional control valve takes place in such a way that the heated water coming from the primary heat exchanger is no longer directed into the heating circuit for space heating but into the heating circuit for domestic water heating, namely into the plate heat exchanger. At the same time, the burner is ignited so that heating of the heat carrier flowing through takes place in the primary heat exchanger.
  • the invention has the object, a generic unit for a heating system in such a way that a better temperature control of the process water is made possible.
  • the assembly according to the invention for a heating system with two heating circuits, one for the space heating and one for the heating of process water, has a fitting and pump housing, which is designed for connection of the secondary heat exchanger, in which the heating of the service water takes place.
  • means for controlling the temperature of the process water are provided within the assembly, namely within the fitting and pump housing, which operate independently of the outside of the unit located heating system parts.
  • the basic idea of the present invention is thus to control the temperature control not only as in the prior art by the gas supply of the burner, which always takes place outside the unit, but within the unit, namely to provide means for controlling the temperature of the service water within the fitting and pump housing So, which are within the unit and thus independent of units outside the unit are independent and thus mounted by the manufacturer of the unit and can be adjusted.
  • a controllable throttle point is provided in the service water line within the unit, with which the hot water flow can be controlled.
  • the possibility of controlling the amount of hot water, the temperature of the escaping hot water can be controlled, too without interfering with the burner control. It may therefore be possible to dispense with a burner control, at least on a sensitive burner control, as this can be done via the flow control, possibly also in addition to the burner control.
  • a throttle point is provided within the assembly, the flow cross-section is adjustable.
  • a temperature control is provided instead of a pure control.
  • a temperature sensor is arranged that is provided within the unit an electronic control, which is fed to the signal of the temperature sensor and in turn emits a control signal , which is responsible for the control of the flow cross section of the throttle point. In this way, a closed loop for the temperature control of the process water can be provided within the unit.
  • the controllable throttle point can in principle be located anywhere within the service water line in the unit, but must be arranged in the flow direction in front of the temperature sensor. It is particularly expedient if the controllable throttle point lies in the flow direction in front of the secondary heat exchanger.
  • the fittings and pump housing from at least one fitting housing part and a pump housing part is constructed of plastic injection molding, then it is structurally particularly favorable to arrange the controllable orifice in a fitting housing part, which connects to the secondary heat exchanger.
  • a variety of design options is given. Particularly advantageous is a construction according to the invention, in which the throttle point is designed in the manner of a slide valve and the slide is moved by means of an externally arranged on the housing electric motor in the axial direction, so that depending on the position of the slide, the flow cross section is larger or smaller. It is expedient to design the arrangement so that the flow cross-section can not be completely closed, but always a minimum flow cross-section remains to ensure even in the case of a defect still sufficient flow of the plate heat exchanger.
  • the design in the manner of a slide valve has the advantage that the flow cross-section can be controlled almost force-free, that can be completely dispensed with sealant in the flow cross section and that the relevant components are inexpensive to produce or can be integrated into the housing.
  • the slide valve-like training also allows a further development to the effect that on the side facing away from the engine of the slide, a filling valve for the heating system can be arranged, which is controllable indirectly or directly by the slide at least in the opening direction. It can therefore, if the control of the flow cross-section is not needed, the slider can be used to control the filling valve, whereby a separate drive for the filling valve can be omitted. Since there is already a conduit for the service water within the housing, it only requires a short overflow, which makes it possible to fill with the help of the incorporated therein filling valve and a further provided check valve, the heating circuit, if this should be necessary.
  • the filling valve is designed so that it is spring-loaded in the closing direction, so that it can be closed in the normal position and can only be opened when actuated by the slide.
  • a filling valve is advantageously designed as a seat valve, but may also be designed as a slide valve.
  • a line connection between a service water leading line and a heating water leading line can be provided without much effort. It is only within the unit in addition to the channel connection to create a space for the filling valve and another space for a check valve, which prevents backflow of heating water to the hot water.
  • the check valve downstream means are provided which effectively prevent ingress of heating water in the hot water circuit. It should be borne in mind that the simple safety of a check valve, which, with a few exceptions, is constantly closed and thus not moved, may not be sufficient to provide the security against the ingress of heating water into the hot water circuit. It is therefore provided according to an embodiment of the invention, a transfer port, which connects to the space between the filling valve and the check valve and connects it to the environment or a drain line. This overflow channel thus ensures that even in the case of a defect of the Check valve itself can not build up pressure on the water heater side filling valve, but this is then possibly derived, until the pressure within the heating circuit has dropped accordingly.
  • the slide of the throttle point can be moved into a cylinder which intersects the channel of the corresponding housing part which leads transversely thereto and leads to the heat exchanger.
  • Such a design is advantageous tool and also particularly advantageous in terms of the arrangement, since both the slider and the end arranged thereon and this traversing motor can be arranged at an easily accessible point of the unit, so that they are easily accessible in the installation position and repair - Or maintenance case without removing housing parts are removable and installable.
  • the arrangement of the engine is advantageously carried out so that it is located above the heat exchanger for heating the service water, ie where regularly a free space is formed within the system.
  • the heating system shown with reference to FIG. 1 has a heating circuit in which water circulated in a primary heat exchanger 1 by means of a burner 2 is heated as a heat carrier.
  • the water is supplied by means of a circulation pump 3 through the primary heat exchanger 1 and subsequently to a 3/3-way valve, from which it is selectively fed via a check valve overflow 5 or a heat exchanger 6 in the form of a plate heat exchanger or radiators 7 a space heater.
  • a check valve overflow 5 or a heat exchanger 6 in the form of a plate heat exchanger or radiators 7 a space heater.
  • This switching position is used for rapid heating of the water circulated there.
  • the heated water in the primary heat exchanger 1 is supplied to the plate heat exchanger 6, in which it heated hot water in countercurrent, which comes from a service water pipe 8 and heated by a hot water pipe 9 leaves the heat exchanger 6.
  • the guided through the heat exchanger 6 heating water passes through a return line 10 back to the circulation pump 3 and thus to the primary heat exchanger 1.
  • the heated in the primary heat exchanger 1 water is supplied to the radiators 7 of the space heater and then via a return line 11 turn to Circulation pump 3 and back to the primary heat exchanger. 1
  • FIG. 1 the components 3 to 6 and 10 as well as further components not shown in detail in the figure are arranged in a structural unit 12, which is shown in FIG. 1 by the rectangular frame numbered 12.
  • Such a unit 12, as is typically provided for so-called wall-mounted gas heaters is shown in Fig. 2.
  • the assembly 12 has a central pump housing part 13 which receives the impeller of the circulation pump 3 and the suction side has an air separator, the quick exhaust fan 14 in FIG. 2 can be seen.
  • the pump housing part 13 is located at a distance in front of the plate heat exchanger 6 and has a mounting position upwardly directed pressure port 15, which is provided for line connection to the primary heat exchanger 1.
  • the pump housing part 13 carries the front side of the electric motor 16 of the pump.
  • the terminal box 17 of the motor 16 is disposed on the electric motor 16 and receives all the control electronics.
  • Right and left close to the pump housing part 13 so-called fitting housing parts 18 and 19, each consisting of two housing components 20 and 21 or 22 and 23. These are plastic injection molded parts, which each connect to a connection pair of the plate heat exchanger 6.
  • the assembly shown in Fig. 2 has four downwardly directed ports 27 to 30, which are provided for connection to the stationary, water-carrying lines in the house.
  • the connection 27 is provided for the heating flow and the connection 30 for the heating return.
  • the hot water is fed via line 8 at the terminal 29 in the unit 12, where it passes from below into the housing member 23 to the bottom in Fig. 2 connection of the right pair of the plate heat exchanger 6, flows through this and passes through the lower terminal of the left pair of terminals in the Housing component 21 and the hot water supply 28 in the corresponding stationary hot water pipe of the building.
  • the heated water coming from the primary heat exchanger 1 is introduced via a connection 31 at the top into the housing component 20, which comprises the 3/3-way valve 4 and, for the purpose of heating service water, flows into the upper left connection of the connection plate of the plate heat exchanger 6 the plate heat exchanger in countercurrent to the hot water and exits at the upper port of the right pair of ports back into the housing member 22 which is line connected to the suction port of the pump 3.
  • a throttle point 32 which is variable in its flow cross-section, is provided in the housing component 23.
  • the housing member 23 has a mounting position (shown in FIG. 2) to the front accessible, closed by a lid 33 cylindrical space 34, followed by the bottom of the terminal 29 for supplying the still cold service water.
  • a channel 35 connects, which ends in the lower connection of the right pair of terminals of the plate heat exchanger 6. In the area between the bottom of the space 34 and the channel 35, this cuts a cylindrical pipe section 36, at the upper end of a terminal 26 is provided for receiving a drive unit 40.
  • a slide 37 is mounted movable in the axial direction, which has a the interior of the pipe section 36 in sections and in cross section completely filling cylinder 38 at its end.
  • the slider 37 is rod-shaped, sealed in the upper part of the pipe section 36 via a seal 39 and the drive unit 40 located there, stored, which has an electric motor for moving the cylinder 38 within the pipe section 36.
  • the temperature control itself is arranged in the terminal box 17 of the motor 16 and moreover has a temperature sensor 49 provided in the housing component 21, which detects the temperature of the heated service water emerging from the plate heat exchanger 6.
  • the pipe section 36 is extended downward beyond the channel 35 and formed there as a guide for a valve body 41 of a filling valve 42.
  • the filling valve 42 is designed as a slide valve.
  • the slider and valve body 41 is subjected to a force in the closing direction by means of a coil spring 43 fixed in the housing at the end.
  • the With reference to Figures 4 and 6 shown position of the valve body 41 thus shows the closed valve position.
  • the slide 37 To open the filling valve 42 to open, the slide 37 must be moved by means of the electric motor 38 beyond its maximum throttle position, until the free end face of the cylinder 38 comes to rest on the opposite end face of the valve body 41. Then, when the slider 37 is further moved against the force of the coil spring 43 and the valve body 41 is pushed down, created around the valve body around a channel connection between the pending in the room 34 service water and a transverse channel 44 to which a check valve 45 connects and the in a port 46 opens, which is provided for connection to the heating circuit of the primary heat exchanger 1. Thus, when the slider 37 is moved into the lowermost end position shown with reference to FIGS.
  • the coil spring 43 is almost completely compressed and the valve body 41 is moved into the position that opens the filling valve 42, whereby the transverse channel 44 is acted upon by the pressure of the service water line is.
  • the downstream check valve 45 releases the flow between the channel 44 in the direction of the port 46 and blocks in the opposite direction, so that in this position, an overflow of service water in the heating circuit, but not vice versa, takes place.
  • the heating circuit automatically or possibly also by manual intervention in the control.
  • the transverse channel 44 with which the spring 43 and the lower Part of the valve body 41 receiving space conductively connected This space is opened by a central recess 47 in the spring 43 supporting the lid 48, so that incoming water is discharged to the outside into the environment and thus can not get into the service water pipe.
  • a drain line leading may possibly be attached to a drain line leading.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)

Abstract

The unit (12) has two heating circuits that are provided for space heating and for heating service water, respectively. Armature and pump housing parts are formed for connection of a heat exchanger (6) for heating of the service water. A throttle point (32) and a temperature sensor (49) are arranged in an inner side of the housing parts for controlling temperature of the service water. A slider is movable in an axial direction by using an electric motor, and a charging valve is arranged at a side of the slider.

Description

Die Erfindung betrifft eine Baueinheit für eine Heizungsanlage mit zwei Heizkreisen gemäß den im Oberbegriff des Anspruchs 1 angegebenen Merkmalen.The invention relates to a structural unit for a heating system with two heating circuits according to the features indicated in the preamble of claim 1.

Derartige Baueinheiten zählen zum Stand der Technik und werden typischerweise in so genannten Gasthermen eingesetzt, die häufig als kompakte Wandgeräte gebaut werden. Diese kompakt ausgebildeten Geräte weisen einen Primärwärmetauscher auf, in welchem im Kreislauf geführtes Wasser als Wärmeträger erwärmt wird, das entweder einem für die Raumheizung vorgesehenen Heizkreis oder aber einem Wärmetauscher, typischerweise einem Plattenwärmetauscher zugeführt wird, über den die Brauchwassererwärmung erfolgt. Die Baueinheit umfasst dabei typischerweise ein aus mehreren Kunststoffspritzgussteilen aufgebautes Armaturen- und Pumpengehäuse, welches rückseitig zum Anschluss des Plattenwärmetauschers ausgebildet ist. Die Baueinheit umfasst darüber hinaus auch alle sonstigen elektrischen, mechanischen und/oder hydraulischen Komponenten, soweit sie sinnvollerweise in der Baueinheit zusammengeführt werden können. Dies sind typischerweise Filter, Schmutz-/Luftabscheider, Schaltventile, Drosselventile, Temperatur- und Drucksensoren und dergleichen.Such units are state of the art and are typically used in so-called gas heating, which are often built as compact wall units. These compact devices have a primary heat exchanger in which circulated water is heated as a heat transfer medium, which is supplied either to a space heating heating circuit or a heat exchanger, typically a plate heat exchanger, via which the domestic water heating takes place. The assembly typically includes a built-up of several injection molded plastic fittings and pump housing, which is formed on the rear side for connection of the plate heat exchanger. The assembly also includes all other electrical, mechanical and / or hydraulic components, as far as they can be usefully merged into the unit. These are typically filters, dirt / air separators, switching valves, throttle valves, temperature and pressure sensors, and the like.

Eine solche Baueinheit, bei der drei Gehäuseteile unter Eingliederung des Pumpenaggregats aneinander anschließen und rückseitig durch den Wärmetauscher verbunden sind, ist aus EP 1 528 330 Al bekannt. Diese Baueinheit ist hoch integriert und besteht im Wesentlichen aus einem zentralen Pumpengehäuseteil und zwei seitlich daran anschließenden Armaturengehäuseteilen.Such a unit in which connect three housing parts under inclusion of the pump unit to each other and are connected at the back by the heat exchanger, is off EP 1 528 330 Al known. This unit is highly integrated and consists essentially of a central pump housing part and two laterally adjoining valve body parts.

Die Erwärmung des Brauchwassers erfolgt, sobald ein Brauchwasserdurchfluss innerhalb der Baueinheit detektiert wird. Dann erfolgt die Umschaltung eines Wegeventils derart, dass das vom Primärwärmetauscher kommende erwärmte Wasser nicht mehr in den Heizkreis für die Raumheizung, sondern in den Heizkreis für die Brauchwassererwärmung, nämlich in den Plattenwärmetauscher geleitet wird. Gleichzeitig wird der Brenner gezündet, so dass im Primärwärmetauscher eine Erwärmung des durchfließenden Wärmeträgers erfolgt.The heating of the service water takes place as soon as a service water flow within the unit is detected. Then, the switching of a directional control valve takes place in such a way that the heated water coming from the primary heat exchanger is no longer directed into the heating circuit for space heating but into the heating circuit for domestic water heating, namely into the plate heat exchanger. At the same time, the burner is ignited so that heating of the heat carrier flowing through takes place in the primary heat exchanger.

Um eine schnelle und ausreichende Erwärmung des Brauchwassers zu gewährleisten, wird brennerseitig bezogen auf den Wasserdurchfluss im Primärwärmetauscher eine hohe Energie eingebracht, die andererseits aber auch im Sekundärwärmetauscher abgenommen werden muss, um eine Überhitzung des Systems, insbesondere Dampfblasenbildung und die damit verbundene schlagartige Druckerhöhung bzw. spätere Kavitation beim Einfallen der Dampfblasen zu vermeiden. Hierzu zählt es zum Stand der Technik, in Abhängigkeit der Durchflussmenge vom Brauchwasser den Brenner zu steuern, sei es in Stufen oder auch stufenlos. Diese Steuerung genügt zwar den Sicherheitsanforderungen für die Heizungsanlage, kann aber in der Praxis dazu führen, dass das erwärmte Brauchwasser je nach aktuellem Leitungsdruck unterschiedlich warm aus der Baueinheit und somit auch aus der Entnahmestelle am Zapfventil austritt.In order to ensure rapid and adequate heating of the service water, a high energy is introduced on the burner side relative to the water flow in the primary heat exchanger, but on the other hand must also be removed in the secondary heat exchanger to overheat the system, in particular vapor bubble formation and the associated sudden pressure increase or to avoid later cavitation when the vapor bubbles fall. For this it belongs to the state of the art to control the burner depending on the flow rate of the process water, be it in stages or steplessly. Although this control meets the safety requirements for the heating system, but in practice can cause the heated hot water depending on the current line pressure different degrees of warmth from the unit and thus also exits the sampling point on the nozzle.

Vor diesem Hintergrund liegt der Erfindung die Aufgabe zugrunde, eine gattungsgemäße Baueinheit für eine Heizungsanlage so auszubilden, dass eine bessere Temperatursteuerung des Brauchwassers ermöglicht wird.Against this background, the invention has the object, a generic unit for a heating system in such a way that a better temperature control of the process water is made possible.

Diese Aufgabe wird gemäß der Erfindung durch die in Anspruch 1 angegebenen Merkmale gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen, der nachfolgenden Beschreibung und der Zeichnung angegeben.This object is achieved according to the invention by the features specified in claim 1. Advantageous embodiments of the invention are specified in the subclaims, the following description and the drawing.

Die erfindungsgemäße Baueinheit für eine Heizungsanlage mit zwei Heizkreisen, einem für die Raumheizung und einem für die Erwärmung von Brauchwasser, weist ein Armaturen- und Pumpengehäuse auf, das zum Anschluss des Sekundärwärmetauschers ausgebildet ist, in welchem die Erwärmung des Brauchwassers erfolgt. Gemäß der Erfindung sind innerhalb der Baueinheit, nämlich innerhalb des Armaturen- und Pumpengehäuses Mittel zur Temperatursteuerung des Brauchwassers vorgesehen, die unabhängig von den außerhalb der Baueinheit befindlichen Heizungsanlagenteilen arbeiten.The assembly according to the invention for a heating system with two heating circuits, one for the space heating and one for the heating of process water, has a fitting and pump housing, which is designed for connection of the secondary heat exchanger, in which the heating of the service water takes place. According to the invention, means for controlling the temperature of the process water are provided within the assembly, namely within the fitting and pump housing, which operate independently of the outside of the unit located heating system parts.

Grundgedanke der vorliegenden Erfindung ist es also, die Temperatursteuerung nicht nur wie beim Stand der Technik durch die Gaszufuhr des Brenners zu steuern, was stets außerhalb der Baueinheit erfolgt, sondern innerhalb der Baueinheit, nämlich innerhalb des Armaturen-und Pumpengehäuses Mittel zur Temperatursteuerung des Brauchwassers vorzusehen, die also innerhalb der Baueinheit liegen und damit von außerhalb der Baueinheit angeordneten Aggregaten unabhängig sind und somit vom Hersteller der Baueinheit montiert und fertig eingestellt werden können.The basic idea of the present invention is thus to control the temperature control not only as in the prior art by the gas supply of the burner, which always takes place outside the unit, but within the unit, namely to provide means for controlling the temperature of the service water within the fitting and pump housing So, which are within the unit and thus independent of units outside the unit are independent and thus mounted by the manufacturer of the unit and can be adjusted.

Um die Temperatur des aus der Baueinheit austretenden erwärmten Brauchwassers zu steuern, ist es gemäß einer Weiterbildung der Erfindung von besonderem Vorteil, wenn innerhalb der Baueinheit eine steuerbare Drosselstelle in der Brauchwasserleitung vorgesehen ist, mit welcher der Brauchwasserdurchfluss gezielt gesteuert werden kann. Durch die Möglichkeit der Steuerung der Brauchwassermenge kann die Temperatur des austretenden Brauchwassers gesteuert werden, auch ohne einen Eingriff in die Brennersteuerung. Es kann also ggf. auf eine Brennersteuerung, zumindest auf eine feinfühlige Brennersteuerung verzichtet werden, da dies über die Durchflusssteuerung, ggf. auch zusätzlich neben der Brennersteuerung erfolgen kann. Hierzu ist innerhalb der Baueinheit eine Drosselstelle vorgesehen, deren Strömungsquerschnitt einstellbar ist.In order to control the temperature of the emerging from the assembly heated service water, it is according to a development of the invention of particular advantage if a controllable throttle point is provided in the service water line within the unit, with which the hot water flow can be controlled. The possibility of controlling the amount of hot water, the temperature of the escaping hot water can be controlled, too without interfering with the burner control. It may therefore be possible to dispense with a burner control, at least on a sensitive burner control, as this can be done via the flow control, possibly also in addition to the burner control. For this purpose, a throttle point is provided within the assembly, the flow cross-section is adjustable.

Vorteilhaft ist es, wenn statt einer reinen Steuerung eine Temperaturregelung vorgesehen wird. Dies kann in Weiterbildung der Erfindung dadurch erfolgen, dass innerhalb des Gehäuses in der vom Sekundär wärmetauscher abströmseitigen Brauchwasserleitung ein Temperatursensor angeordnet ist, dass im Weiteren innerhalb der Baueinheit eine elektronische Regelung vorgesehen ist, welcher das Signal des Temperatursensors zugeführt ist und die wiederum ein Stellsignal abgibt, welches für die Steuerung des Strömungsquerschnitts der Drosselstelle verantwortlich ist. Auf diese Weise kann innerhalb der Baueinheit ein geschlossener Regelkreis für die Temperatursteuerung des Brauchwassers vorgesehen werden.It is advantageous if a temperature control is provided instead of a pure control. This can be done in a further development of the invention in that within the housing in the secondary heat exchanger downstream DHW line, a temperature sensor is arranged that is provided within the unit an electronic control, which is fed to the signal of the temperature sensor and in turn emits a control signal , which is responsible for the control of the flow cross section of the throttle point. In this way, a closed loop for the temperature control of the process water can be provided within the unit.

Die steuerbare Drosselstelle kann grundsätzlich an beliebiger Stelle innerhalb der Brauchwasserleitung in der Baueinheit liegen, muss jedoch in Strömungsrichtung vor dem Temperatursensor angeordnet sein. Besonders zweckmäßig ist es, wenn die steuerbare Drosselstelle in Strömungsrichtung vor dem Sekundärwärmetauscher liegt.The controllable throttle point can in principle be located anywhere within the service water line in the unit, but must be arranged in the flow direction in front of the temperature sensor. It is particularly expedient if the controllable throttle point lies in the flow direction in front of the secondary heat exchanger.

Wenn, was heutzutage zum Stand der Technik zählt, das Armaturen-und Pumpengehäuse aus mindestens einem Armaturengehäuseteil und einem Pumpengehäuseteil aus Kunststoffspritzguss aufgebaut ist, dann ist es konstruktiv besonders günstig, die steuerbare Drosselstelle in einem Armaturengehäuseteil anzuordnen, welches an den Sekundärwärmetauscher anschließt.If what belongs to the state of the art today, the fittings and pump housing from at least one fitting housing part and a pump housing part is constructed of plastic injection molding, then it is structurally particularly favorable to arrange the controllable orifice in a fitting housing part, which connects to the secondary heat exchanger.

Zur Ausbildung einer im Strömungsquerschnitt steuerbaren Drosselstelle ist eine Vielzahl von konstruktiven Möglichkeiten gegeben. Besonders vorteilhaft ist eine Konstruktion gemäß der Erfindung, bei der die Drosselstelle nach Art eines Schieberventils ausgebildet ist und der Schieber mittels eines außen am Gehäuse angeordneten Elektromotors in Achsrichtung verfahrbar ist, so dass je nach Stellung des Schiebers der Strömungsquerschnitt größer oder kleiner ist. Dabei ist es zweckmäßig, die Anordnung so auszulegen, dass der Strömungsquerschnitt nicht völlig geschlossen werden kann, sondern stets ein Mindestströmungsquerschnitt verbleibt, um auch im Falle eines Defektes noch eine ausreichende Durchströmung des Plattenwärmetauschers sicherzustellen. Die Ausbildung nach Art eines Schieberventils hat den Vorteil, dass nahezu kraftfrei der Strömungsquerschnitt gesteuert werden kann, dass auf Dichtmittel im Bereich des Strömungsquerschnitts völlig verzichtet werden kann und dass die diesbezüglichen Bauteile kostengünstig herstellbar bzw. in das Gehäuse integrierbar sind.To form a controllable in the flow cross-section throttle body a variety of design options is given. Particularly advantageous is a construction according to the invention, in which the throttle point is designed in the manner of a slide valve and the slide is moved by means of an externally arranged on the housing electric motor in the axial direction, so that depending on the position of the slide, the flow cross section is larger or smaller. It is expedient to design the arrangement so that the flow cross-section can not be completely closed, but always a minimum flow cross-section remains to ensure even in the case of a defect still sufficient flow of the plate heat exchanger. The design in the manner of a slide valve has the advantage that the flow cross-section can be controlled almost force-free, that can be completely dispensed with sealant in the flow cross section and that the relevant components are inexpensive to produce or can be integrated into the housing.

Die schieberventilähnliche Ausbildung erlaubt darüber hinaus auch eine Weiterbildung dahingehend, dass auf der dem Motor abgewandten Seite des Schiebers ein Füllventil für die Heizungsanlage angeordnet werden kann, das zumindest in Öffnungsrichtung mittelbar oder unmittelbar durch den Schieber steuerbar ist. Es kann also, wenn die Steuerung des Strömungsquerschnittes nicht benötigt wird, der Schieber zur Steuerung des Füllventils verwendet werden, wodurch ein gesonderter Antrieb für das Füllventil entfallen kann. Da innerhalb des Gehäuses eine Leitungsführung für das Brauchwasser ohnehin vorhanden ist, bedarf es lediglich eines kurzen Überströmkanals, welcher es ermöglicht, mit Hilfe des darin eingegliederten Füllventils sowie eines weiterhin vorgesehenen Rückschlagventils den Heizkreis zu befüllen, wenn dies erforderlich sein sollte.The slide valve-like training also allows a further development to the effect that on the side facing away from the engine of the slide, a filling valve for the heating system can be arranged, which is controllable indirectly or directly by the slide at least in the opening direction. It can therefore, if the control of the flow cross-section is not needed, the slider can be used to control the filling valve, whereby a separate drive for the filling valve can be omitted. Since there is already a conduit for the service water within the housing, it only requires a short overflow, which makes it possible to fill with the help of the incorporated therein filling valve and a further provided check valve, the heating circuit, if this should be necessary.

Vorteilhaft ist dabei das Füllventil so ausgebildet, dass es in Schließrichtung federkraftbeaufschlagt ist, so dass es in normaler Stellung geschlossen und lediglich bei Betätigung durch den Schieber geöffnet werden kann. Ein solches Füllventil ist vorteilhaft als Sitzventil ausgebildet, kann jedoch auch als Schieberventil ausgebildet sein.Advantageously, the filling valve is designed so that it is spring-loaded in the closing direction, so that it can be closed in the normal position and can only be opened when actuated by the slide. Such a filling valve is advantageously designed as a seat valve, but may also be designed as a slide valve.

Soweit es die Steuerung des Füllventils angeht, ist es zweckmäßig, diese so auszugestalten, dass der Schieber erst beim Verfahren über die engste Drosselstelle hinaus den Ventilkörper des Füllventils öffnend ansteuert, dann ist sichergestellt, dass beim normalen Steuerungsbetrieb das Füllventil nicht angesteuert wird.As far as the control of the filling valve, it is expedient to design this so that the slider opens the valve body of the filling valve opening only during the process beyond the narrowest throttle point, then it is ensured that during normal control operation, the filling valve is not activated.

Da innerhalb des Armaturengehäuses die Leitungsführungen sehr eng beieinander liegen, kann eine Leitungsverbindung zwischen einer Brauchwasser führenden Leitung und einer Heizungswasser führenden Leitung ohne großen Aufwand vorgesehen werden. Es ist lediglich innerhalb der Baueinheit neben der Kanalverbindung ein Raum für das Füllventil sowie ein weiterer Raum für ein Rückschlagventil zu schaffen, welches ein Rückströmen von Heizungswasser zum Brauchwasser verhindert.Since the lines are very close together within the fitting housing, a line connection between a service water leading line and a heating water leading line can be provided without much effort. It is only within the unit in addition to the channel connection to create a space for the filling valve and another space for a check valve, which prevents backflow of heating water to the hot water.

Vorteilhaft sind dem Rückschlagventil nachgeschaltet Mittel vorgesehen, welche ein Eindringen von Heizungswasser in den Brauchwasserkreis wirksam verhindern. Dazu ist zu bedenken, dass die einfache Sicherheit eines Rückschlagventils, das bis auf wenige Ausnahmen ständig geschlossen ist und somit nicht bewegt wird, möglicherweise nicht ausreicht, um die gegen das Eintreten von Heizungswasser in den Brauchwasserkreis erforderliche Sicherheit zu geben. Es ist daher gemäß einer Weiterbildung der Erfindung ein Überströmkanal vorgesehen, der an den Raum zwischen Füllventil und Rückschlagventil anschließt und diesen mit der Umgebung oder einer Abflussleitung verbindet. Dieser Überströmkanal stellt somit sicher, dass auch im Falle eines Defektes des Rückschlagventils sich am Füllventil heizungswasserseitig kein Druck aufbauen kann, sondern dieses dann ggf. abgeleitet wird, so lange, bis der Druck innerhalb des Heizkreises entsprechend abgefallen ist.Advantageously, the check valve downstream means are provided which effectively prevent ingress of heating water in the hot water circuit. It should be borne in mind that the simple safety of a check valve, which, with a few exceptions, is constantly closed and thus not moved, may not be sufficient to provide the security against the ingress of heating water into the hot water circuit. It is therefore provided according to an embodiment of the invention, a transfer port, which connects to the space between the filling valve and the check valve and connects it to the environment or a drain line. This overflow channel thus ensures that even in the case of a defect of the Check valve itself can not build up pressure on the water heater side filling valve, but this is then possibly derived, until the pressure within the heating circuit has dropped accordingly.

Konstruktiv besonders günstig ist es, wenn der Schieber der Drosselstelle in einen Zylinder verfahrbar ist, der den quer dazu mündenden, zum Wärmetauscher führenden Kanal des entsprechenden Gehäuseteils schneidet. Eine solche Ausbildung ist werkzeugmäßig vorteilhaft und auch hinsichtlich der Anordnung besonders günstig, da sowohl der Schieber als auch der endseitig daran angeordnete und diesen verfahrende Motor an einer gut zugänglichen Stelle der Baueinheit angeordnet werden können, derart, dass sie in Einbaulage gut zugänglich und im Reparatur- bzw. Wartungsfall ohne Ausbau von Gehäuseteilen aus-und einbaubar sind. Die Anordnung des Motors erfolgt dabei vorteilhaft so, dass dieser oberhalb des Wärmetauschers zur Erwärmung des Brauchwassers angeordnet ist, also dort, wo regelmäßig ein Freiraum innerhalb der Anlage gebildet ist.It is particularly advantageous in terms of design if the slide of the throttle point can be moved into a cylinder which intersects the channel of the corresponding housing part which leads transversely thereto and leads to the heat exchanger. Such a design is advantageous tool and also particularly advantageous in terms of the arrangement, since both the slider and the end arranged thereon and this traversing motor can be arranged at an easily accessible point of the unit, so that they are easily accessible in the installation position and repair - Or maintenance case without removing housing parts are removable and installable. The arrangement of the engine is advantageously carried out so that it is located above the heat exchanger for heating the service water, ie where regularly a free space is formed within the system.

Die Erfindung ist nachfolgend anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert. Es zeigen:

Fig. 1
ein Schaltbild einer Heizungsanlage,
Fig. 2
in perspektivischer Ansicht in Einbaulage eine Baueinheit einer Heizungsanlage gemäß Fig. 1,
Fig. 3
in vergrößerter Darstellung eine perspektivische Ansicht eines bestückten Gehäusebauteils der Baueinheit gemäß Fig. 2,
Fig. 4
einen Schnitt des Gehäusebauteils nach Fig. 3 durch die Ebene A-A-A-A in einer ersten Stellung,
Fig. 5
die Schnittdarstellung gemäß Fig. 4 in einer zweiten Stellung,
Fig. 6
einen Schnitt des in Fig. 3 dargestellten Gehäusebauteils längs der Schnittebene B-B-B-B in einer ersten Stellung und
Fig. 7
die Schnittdarstellung nach Fig. 6 in einer zweiten Stellung.
The invention is explained in more detail with reference to an embodiment shown in the drawing. Show it:
Fig. 1
a circuit diagram of a heating system,
Fig. 2
in perspective view in installation position, a structural unit of a heating system according to FIG. 1,
Fig. 3
an enlarged view of a perspective view of a populated housing component of the assembly of FIG. 2,
Fig. 4
3 shows a section of the housing component according to FIG. 3 through the plane AAAA in a first position,
Fig. 5
the sectional view of FIG. 4 in a second position,
Fig. 6
a section of the housing component shown in Fig. 3 along the sectional plane BBBB in a first position and
Fig. 7
the sectional view of FIG. 6 in a second position.

Die anhand von Fig. 1 dargestellte Heizungsanlage weist einen Heizkreis auf, in dem in einem Primärwärmetauscher 1 mittels eines Brenners 2 in Kreislauf geführtes Wasser als Wärmeträger erwärmt wird. Das Wasser wird mittels einer Umwälzpumpe 3 durch den Primärwärmetauscher 1 und nachfolgend einem 3/3-Wegeventil zugeführt, von dem aus es wahlweise über ein Rückschlagventil einer Überströmleitung 5 oder einem Wärmetauscher 6 in Form eines Plattenwärmetauschers oder Heizkörpern 7 einer Raumheizung zugeführt wird. Durch die Überströmleitung 5 erfolgt auf kurzem Wege eine Rückführung zur Umwälzpumpe 3 und somit zum Primärwärmetauscher 1. Diese Schaltstellung dient zum schnellen Erwärmen des dort im Kreislauf geführten Wassers. In der zweiten Schaltstellung wird das im Primärwärmetauscher 1 erwärmte Wasser dem Plattenwärmetauscher 6 zugeführt, in welchem es im Gegenstrom Brauchwasser erwärmt, welches aus einer Brauchwasserleitung 8 kommt und erwärmt durch eine Warmwasserleitung 9 den Wärmetauscher 6 verlässt. Das durch den Wärmetauscher 6 geführte Heizwasser gelangt über eine Rückführleitung 10 wieder zur Umwälzpumpe 3 und somit zum Primärwärmetauscher 1. In der dritten Schaltstellung des Ventils 4 wird das im Primärwärmetauscher 1 erwärmte Wasser den Heizkörpern 7 der Raumheizung zugeführt und dann über eine Rückführleitung 11 wiederum zur Umwälzpumpe 3 und zurück zum Primärwärmetauscher 1.The heating system shown with reference to FIG. 1 has a heating circuit in which water circulated in a primary heat exchanger 1 by means of a burner 2 is heated as a heat carrier. The water is supplied by means of a circulation pump 3 through the primary heat exchanger 1 and subsequently to a 3/3-way valve, from which it is selectively fed via a check valve overflow 5 or a heat exchanger 6 in the form of a plate heat exchanger or radiators 7 a space heater. Through the overflow 5, a return to the circulation pump 3 and thus to the primary heat exchanger 1 is carried out over a short path. This switching position is used for rapid heating of the water circulated there. In the second switching position, the heated water in the primary heat exchanger 1 is supplied to the plate heat exchanger 6, in which it heated hot water in countercurrent, which comes from a service water pipe 8 and heated by a hot water pipe 9 leaves the heat exchanger 6. The guided through the heat exchanger 6 heating water passes through a return line 10 back to the circulation pump 3 and thus to the primary heat exchanger 1. In the third switching position of the valve 4, the heated in the primary heat exchanger 1 water is supplied to the radiators 7 of the space heater and then via a return line 11 turn to Circulation pump 3 and back to the primary heat exchanger. 1

Wie aus Fig. 1 ersichtlich ist, sind die Bauteile 3 bis 6 und 10 sowie weitere, in der Figur nicht im Einzelnen dargestellte Komponenten, in einer Baueinheit 12 angeordnet, die in Fig. 1 durch den mit 12 bezifferten rechteckigen Rahmen dargestellt ist.As can be seen from FIG. 1, the components 3 to 6 and 10 as well as further components not shown in detail in the figure are arranged in a structural unit 12, which is shown in FIG. 1 by the rectangular frame numbered 12.

Eine solche Baueinheit 12, wie sie typischerweise für so genannte wandmontierbare Gasthermen vorgesehen ist, ist in Fig. 2 dargestellt. Die Baueinheit 12 weist ein zentrales Pumpengehäuseteil 13 auf, welches das Kreiselrad der Umwälzpumpe 3 aufnimmt und saugseitig einen Luftabscheider aufweist, dessen Schnellentlüfter 14 in Fig. 2 erkennbar ist. Das Pumpengehäuseteil 13 liegt mit Abstand vor dem Plattenwärmetauscher 6 und weist einen in Einbaulage nach oben gerichteten Druckstutzen 15 auf, welcher zur Leitungsverbindung mit dem Primärwärmetauscher 1 vorgesehen ist. Das Pumpengehäuseteil 13 trägt stirnseitig den Elektromotor 16 der Pumpe. Der Klemmenkasten 17 des Motors 16 ist auf dem Elektromotor 16 angeordnet und nimmt die gesamte Steuer- und Regelelektronik auf. Rechts und links (gemäß Fig. 2) schließen an das Pumpengehäuseteil 13 so genannte Armaturengehäuseteile 18 und 19 an, die jeweils aus zwei Gehäusebauteilen 20 und 21 bzw. 22 und 23 bestehen. Es handelt sich hierbei um Kunststoffspritzgussteile, die jeweils an ein Anschlusspaar des Plattenwärmetauschers 6 anschließen.Such a unit 12, as is typically provided for so-called wall-mounted gas heaters is shown in Fig. 2. The assembly 12 has a central pump housing part 13 which receives the impeller of the circulation pump 3 and the suction side has an air separator, the quick exhaust fan 14 in FIG. 2 can be seen. The pump housing part 13 is located at a distance in front of the plate heat exchanger 6 and has a mounting position upwardly directed pressure port 15, which is provided for line connection to the primary heat exchanger 1. The pump housing part 13 carries the front side of the electric motor 16 of the pump. The terminal box 17 of the motor 16 is disposed on the electric motor 16 and receives all the control electronics. Right and left (as shown in FIG. 2) close to the pump housing part 13 so-called fitting housing parts 18 and 19, each consisting of two housing components 20 and 21 or 22 and 23. These are plastic injection molded parts, which each connect to a connection pair of the plate heat exchanger 6.

Die in Fig. 2 dargestellte Baueinheit weist vier nach unten gerichtete Anschlüsse 27 bis 30 auf, welche zur Verbindung mit den ortsfesten, Wasser führenden Leitungen im Haus vorgesehen sind. Dabei ist der Anschluss 27 für den Heizungsvorlauf und der Anschluss 30 für den Heizungsrücklauf vorgesehen. Das Brauchwasser wird über die Leitung 8 am Anschluss 29 in die Baueinheit 12 geführt, gelangt dort von unten in das Gehäusebauteil 23 zu dem in Fig. 2 unteren Anschluss des rechten Anschlusspaares des Plattenwärmetauschers 6, durchströmt diesen und gelangt über den unteren Anschluss des linken Anschlusspaares in das Gehäusebauteil 21 und über den Warmwasseranschluss 28 in die entsprechende ortsfeste Warmwasserleitung des Gebäudes. Im Gegenstrom dazu wird das vom Primärwärmetauscher 1 kommende, erwärmte Wasser über einen Anschluss 31 oben in das Gehäusebauteil 20 eingeleitet, welches das 3/3-Wegeventil 4 umfasst und zum Zwecke der Brauchwassererwärmung in den oberen linken Anschluss des Anschlusspaares des Plattenwärmetauschers 6 geführt, durchströmt den Plattenwärmetauscher im Gegenstrom zum Brauchwasser und tritt am oberen Anschluss des rechten Anschlusspaares wieder aus in das Gehäusebauteil 22, das mit dem Saugmund der Pumpe 3 leitungsverbunden ist.The assembly shown in Fig. 2 has four downwardly directed ports 27 to 30, which are provided for connection to the stationary, water-carrying lines in the house. In this case, the connection 27 is provided for the heating flow and the connection 30 for the heating return. The hot water is fed via line 8 at the terminal 29 in the unit 12, where it passes from below into the housing member 23 to the bottom in Fig. 2 connection of the right pair of the plate heat exchanger 6, flows through this and passes through the lower terminal of the left pair of terminals in the Housing component 21 and the hot water supply 28 in the corresponding stationary hot water pipe of the building. In countercurrent thereto, the heated water coming from the primary heat exchanger 1 is introduced via a connection 31 at the top into the housing component 20, which comprises the 3/3-way valve 4 and, for the purpose of heating service water, flows into the upper left connection of the connection plate of the plate heat exchanger 6 the plate heat exchanger in countercurrent to the hot water and exits at the upper port of the right pair of ports back into the housing member 22 which is line connected to the suction port of the pump 3.

Um die Menge des die Baueinheit 12 durchströmenden Brauchwassers zu steuern, was für die eingangs beschriebene Temperaturregelung vorgesehen ist, ist eine in ihrem Strömungsquerschnitt veränderbare Drosselstelle 32 in dem Gehäusebauteil 23 vorgesehen. Das Gehäusebauteil 23 weist einen in Einbaulage (gemäß Fig. 2) nach vorne zugänglichen, durch einen Deckel 33 abgeschlossenen zylindrischen Raum 34 auf, an den von unten der Anschluss 29 zur Zufuhr des noch kalten Brauchwassers anschließt. Im Boden des zylindrischen Raums 34 schließt ein Kanal 35 an, der im unteren Anschluss des rechten Anschlusspaares des Plattenwärmetauschers 6 endet. Im Bereich zwischen dem Boden des Raums 34 und dem Kanal 35 schneidet diese ein zylindrischer Rohrabschnitt 36, an dessen oberen Ende ein Anschluss 26 zur Aufnahme einer Antriebseinheit 40 vorgesehen ist.In order to control the amount of service water flowing through the unit 12, which is provided for the temperature control described above, a throttle point 32, which is variable in its flow cross-section, is provided in the housing component 23. The housing member 23 has a mounting position (shown in FIG. 2) to the front accessible, closed by a lid 33 cylindrical space 34, followed by the bottom of the terminal 29 for supplying the still cold service water. In the bottom of the cylindrical space 34, a channel 35 connects, which ends in the lower connection of the right pair of terminals of the plate heat exchanger 6. In the area between the bottom of the space 34 and the channel 35, this cuts a cylindrical pipe section 36, at the upper end of a terminal 26 is provided for receiving a drive unit 40.

Innerhalb des Rohrabschnitts 36 ist ein Schieber 37 in Achsrichtung verfahrbar gelagert, der einen den Innenraum des Rohrabschnitts 36 abschnittsweise und im Querschnitt vollständig ausfüllenden Zylinder 38 an seinem Ende aufweist. Im Übrigen ist der Schieber 37 stangenförmig ausgebildet, im oberen Teil des Rohrabschnitts 36 über eine Dichtung 39 abgedichtet und der dort befindlichen Antriebseinheit 40 gelagert, welche einen Elektromotor zum Verfahren des Zylinders 38 innerhalb des Rohrabschnitts 36 aufweist.Within the tube section 36, a slide 37 is mounted movable in the axial direction, which has a the interior of the pipe section 36 in sections and in cross section completely filling cylinder 38 at its end. Incidentally, the slider 37 is rod-shaped, sealed in the upper part of the pipe section 36 via a seal 39 and the drive unit 40 located there, stored, which has an electric motor for moving the cylinder 38 within the pipe section 36.

Wenn der Schieber 37 in seiner oberen Endstellung befindlich ist, dann ist der Durchfluss vom Raum 34 zum Kanal 35 vollständig geöffnet. Mit zunehmender Abwärtsbewegung wird jedoch der Verbindungsquerschnitt mehr und mehr verkleinert. In der anhand der Figuren 4 und 6 dargestellten Schieberstellung ist der Zylinder 38 nahezu vollständig in die Verbindung zwischen dem Raum 34 und dem Kanal 35 eingefahren, dann weist die Drosselstelle 32 ihren engsten Querschnitt auf. Dieser verbleibende engste Drosselquerschnitt ist jedoch so groß, dass immer noch ausreichend Wasser in den Plattenwärmetauscher 6 gelangt, um eine Überhitzung zu vermeiden.If the slide 37 is in its upper end position, then the flow from the space 34 to the channel 35 is fully open. With increasing downward movement, however, the connecting cross section is reduced more and more. In the slide position shown with reference to FIGS. 4 and 6, the cylinder 38 has almost completely retracted into the connection between the space 34 and the channel 35, then the throttle point 32 has its narrowest cross-section. However, this remaining narrowest throttle cross-section is so large that sufficient water still passes into the plate heat exchanger 6 in order to avoid overheating.

In diesem Bereich, in dem der Zylinder 38 ganz nach oben gefahren ist, bis zu dem Bereich, in dem er den Durchgang zum Kanal 35 großteils verschließt, liegt der für die Temperaturregelung vorgesehene Stellbereich des Schiebers. Die Temperaturregelung selbst ist im Klemmenkasten 17 des Motors 16 angeordnet und weist darüber hinaus noch einen im Gehäusebauteil 21 vorgesehenen Temperatursensor 49 auf, welcher die Temperatur des aus dem Plattenwärmetauscher 6 austretenden erwärmten Brauchwassers erfasst. Durch Steuerung der Drosselstelle 32, also durch elektromotorisches Verfahren des Schiebers 37 innerhalb des Rohrabschnitts 36 wird die Menge des dem Plattenwärmetauscher 6 durchströmenden Brauchwassers gesteuert und somit die Temperatur des austretenden, erwärmten Brauchwassers geregelt.In this area, in which the cylinder 38 is driven all the way up to the area in which it largely closes the passage to the channel 35, there is provided for the temperature control range of the slide. The temperature control itself is arranged in the terminal box 17 of the motor 16 and moreover has a temperature sensor 49 provided in the housing component 21, which detects the temperature of the heated service water emerging from the plate heat exchanger 6. By controlling the throttle point 32, so by electromotive method of the slide 37 within the pipe section 36, the amount of hot water flowing through the plate heat exchanger 6 is controlled and thus regulated the temperature of the exiting, heated service water.

Der Rohrabschnitt 36 ist nach unten über den Kanal 35 hinaus verlängert und dort als Führung für einen Ventilkörper 41 eines Füllventils 42 ausgebildet. Das Füllventil 42 ist als Schieberventil ausgebildet. Der Schieber und Ventilkörper 41 ist mittels einer endseitig im Gehäuse festgelegten Schraubenfeder 43 in Schließrichtung kraftbeaufschlagt. Die anhand der Figuren 4 und 6 dargestellte Stellung des Ventilkörpers 41 zeigt somit die geschlossene Ventilstellung.The pipe section 36 is extended downward beyond the channel 35 and formed there as a guide for a valve body 41 of a filling valve 42. The filling valve 42 is designed as a slide valve. The slider and valve body 41 is subjected to a force in the closing direction by means of a coil spring 43 fixed in the housing at the end. The With reference to Figures 4 and 6 shown position of the valve body 41 thus shows the closed valve position.

Um das Füllventil 42 öffnend anzusteuern, muss der Schieber 37 mittels des Elektromotors 38 über seine maximale Drosselstellung hinaus verfahren werden, bis die freie Stirnseite des Zylinders 38 an der gegenüberliegenden Stirnseite des Ventilkörpers 41 zur Anlage kommt. Wenn dann der Schieber 37 weiter entgegen der Kraft der Schraubenfeder 43 bewegt und der Ventilkörper 41 nach unten geschoben wird, entsteht um den Ventilkörper herum eine Kanalverbindung zwischen dem im Raum 34 anstehenden Brauchwasser und einem Querkanal 44, an den ein Rückschlagventil 45 anschließt und der in einem Anschluss 46 mündet, welcher zur Verbindung mit dem Heizkreis des Primärwärmetauschers 1 vorgesehen ist. Wenn also der Schieber 37 in die anhand der Figuren 5 und 7 dargestellte unterste Endstellung verfahren wird, dann ist die Schraubenfeder 43 nahezu vollständig zusammengedrückt und der Ventilkörper 41 in die das Füllventil 42 öffnende Stellung gefahren, wodurch der Querkanal 44 mit dem Druck der Brauchwasserleitung beaufschlagt ist. Das nachgeschaltete Rückschlagventil 45 gibt die Strömung zwischen dem Kanal 44 in Richtung zum Anschluss 46 frei und sperrt in Gegenrichtung, so dass in dieser Stellung ein Überströmen von Brauchwasser in den Heizkreis, aber nicht umgekehrt, erfolgt. Durch entsprechende Sensorik und Ansteuerung kann also mittels des Füllventils 42 der Heizkreis selbsttätig oder ggf. auch durch manuellen Eingriff in die Steuerung befüllt werden. Beim Ansteuern des Schiebers 37 in Gegenrichtung, also in den Figuren nach oben, wird der Ventilkörper 41 durch die Kraft der Schraubenfeder 43 wieder in die Schließstellung bewegt, in welche ein O-Ring für die erforderliche Abdichtung sorgt.To open the filling valve 42 to open, the slide 37 must be moved by means of the electric motor 38 beyond its maximum throttle position, until the free end face of the cylinder 38 comes to rest on the opposite end face of the valve body 41. Then, when the slider 37 is further moved against the force of the coil spring 43 and the valve body 41 is pushed down, created around the valve body around a channel connection between the pending in the room 34 service water and a transverse channel 44 to which a check valve 45 connects and the in a port 46 opens, which is provided for connection to the heating circuit of the primary heat exchanger 1. Thus, when the slider 37 is moved into the lowermost end position shown with reference to FIGS. 5 and 7, the coil spring 43 is almost completely compressed and the valve body 41 is moved into the position that opens the filling valve 42, whereby the transverse channel 44 is acted upon by the pressure of the service water line is. The downstream check valve 45 releases the flow between the channel 44 in the direction of the port 46 and blocks in the opposite direction, so that in this position, an overflow of service water in the heating circuit, but not vice versa, takes place. By appropriate sensor and control can thus be filled by means of the filling valve 42, the heating circuit automatically or possibly also by manual intervention in the control. When driving the slider 37 in the opposite direction, ie in the figures above, the valve body 41 is moved by the force of the coil spring 43 back into the closed position, in which an O-ring provides the required seal.

Um sicherzustellen, dass auch selbst dann, wenn das Rückschlagventil 45 defekt sein sollte, kein Heizwasser in die Brauchwasser führende Leitung gelangt, ist der Querkanal 44 mit dem die Feder 43 und den unteren Teil des Ventilkörpers 41 aufnehmenden Raum leitungsverbunden. Dieser Raum ist durch eine zentrale Ausnehmung 47 in dem die Feder 43 abstützenden Deckel 48 geöffnet, so dass hier eintretendes Wasser nach außen in die Umgebung abgeführt wird und somit nicht in die Brauchwasserleitung gelangen kann. Hier kann ggf. eine zum einen Abfluss führende Leitung angebracht sein.To ensure that even if the check valve 45 should be defective, no heating water enters the service water pipe leading, the transverse channel 44 with which the spring 43 and the lower Part of the valve body 41 receiving space conductively connected. This space is opened by a central recess 47 in the spring 43 supporting the lid 48, so that incoming water is discharged to the outside into the environment and thus can not get into the service water pipe. Here may possibly be attached to a drain line leading.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1 -1 -
PrimärwärmetauscherPrimary heat exchanger
2 -2 -
Brennerburner
3 -3 -
Umwälzpumpecirculating pump
4 -4 -
3/3-Wegeventil3/3-way valve
5 -5 -
Überströmleitungoverflow
6 -6 -
Wärmetauscherheat exchangers
7 -7 -
Heizkörperradiator
8 -8th -
BrauchwasserleitungWater pipe
9 -9 -
WarmwasserleitungHot water pipe
10 -10 -
RückführleitungReturn line
11 -11 -
RückführleitungReturn line
12 -12 -
Baueinheitunit
13 -13 -
PumpengehäuseteilPump housing part
14 -14 -
Schnellentlüftervent
15 -15 -
Druckstutzenpressure port
16 -16 -
Elektromotorelectric motor
17 -17 -
Klemmenkastenterminal box
18 -18 -
Armaturengehäuseteil, linksseitigValve body part, left side
19 -19 -
Armaturengehäuseteil, rechtsseitigValve body part, right side
20 -20 -
Gehäusebauteil von 18Housing component of 18
21 -21 -
Gehäusebauteil von 18Housing component of 18
22 -22 -
Gehäusebauteil von 19Housing component of 19
23 -23 -
Gehäusebauteil von 19Housing component of 19
26 -26 -
Anschlussconnection
27 -27 -
Anschluss für HeizungsvorlaufConnection for heating flow
28 -28 -
Anschluss für Brauchwasser, warmConnection for hot water, warm
29 -29 -
Anschluss für Brauchwasser, kaltConnection for hot water, cold
30 -30 -
Anschluss für HeizungsrücklaufConnection for heating return
31 -31 -
Anschluss zum PrimärwärmetauscherConnection to the primary heat exchanger
32 -32 -
Drosselstellerestriction
33 -33 -
Deckelcover
34 -34 -
Raumroom
35 -35 -
Kanalchannel
36 -36 -
Rohrabschnittpipe section
37 -37 -
Schieberpusher
38 -38 -
Zylindercylinder
39 -39 -
Dichtungpoetry
40 -40 -
Antriebseinheitdrive unit
41 -41 -
Ventilkörpervalve body
42 -42 -
Füllventilfilling valve
43 -43 -
Schraubenfedercoil spring
44 -44 -
QuerkanalQuerkanal
45 -45 -
Rückschlagventilcheck valve
46 -46 -
Anschluss zum Befüllen des HeizkreisesConnection for filling the heating circuit
47 -47 -
Ausnehmungrecess
48 -48 -
Deckelcover
49 -49 -
Temperatursensortemperature sensor

Claims (13)

Baueinheit (12) für eine Heizungsanlage mit zwei Heizkreisen, einen für die Raumheizung und einen zur Erwärmung von Brauchwasser, mit einem Armaturen- und Pumpengehäuse (13, 18, 19), das zum Anschluss eines Sekundärwärmetauschers (6) zur Erwärmung des Brauchwassers ausgebildet ist, dadurch gekennzeichnet, dass innerhalb des Armaturen- und Pumpengehäuses (13, 18, 19) Mittel zur Temperatursteuerung (32, 40, 49) des Brauchwassers vorgesehen sind.Assembly (12) for a heating system with two heating circuits, one for space heating and one for heating domestic water, with a fitting and pump housing (13, 18, 19), which is designed to connect a secondary heat exchanger (6) for heating the service water , characterized in that within the fitting and pump housing (13, 18, 19) means for temperature control (32, 40, 49) of the service water are provided. Baueinheit nach Anspruch 1, dadurch gekennzeichnet, dass die Mittel zur Temperatursteuerung eine im Strömungsquerschnitt steuerbare Drosselstelle (32) in der Brauchwasserleitung aufweisen.Assembly according to claim 1, characterized in that the means for temperature control have a controllable in flow cross-section throttle point (32) in the service water pipe. Baueinheit nach Anspruch 2, dadurch gekennzeichnet, dass innerhalb des Gehäuses (23) in der vom Sekundärwärmetauscher (6) abströmseitigen Brauchwasserleitung ein Temperatursensor (49) angeordnet ist, dessen Signal einer elektronische Regelung (17) zugeführt ist, welche den Strömungsquerschnitt der Drosselstelle (32) steuert.An assembly according to claim 2, characterized in that within the housing (23) in the downstream of the secondary heat exchanger (6) downstream a water temperature sensor (49) is arranged, the signal of an electronic control (17) is supplied, which the flow cross section of the throttle point (32 ) controls. Baueinheit nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Armaturen- und Pumpengehäuse aus mindestens einem Armaturengehäuseteil (18, 19) und einem Pumpengehäuseteil (13) aufgebaut ist und dass die steuerbare Drosselstelle (32) in einem Armaturengehäuseteil (19) angeordnet ist, an welches der Sekundärwärmetauscher (6) anschließt.Assembly according to one of the preceding claims, characterized in that the fitting and pump housing of at least one fitting housing part (18, 19) and a pump housing part (13) is constructed and that the controllable throttle point (32) in a valve body part (19) is arranged, to which the secondary heat exchanger (6) connects. Baueinheit nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Drosselstelle (32) nach Art eines Schieberventils ausgebildet ist und der Schieber (37) mittels eines außen am Gehäuse angeordneten Elektromotors (40) in Achsrichtung verfahrbar ist.Assembly according to one of the preceding claims, characterized in that the throttle point (32) is designed in the manner of a slide valve and the slide (37) by means of an outside of the housing arranged electric motor (40) is movable in the axial direction. Baueinheit nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass auf der dem Antrieb (40) abgewandten Seite des Schiebers (37) ein Füllventil (42) für die Heizungsanlage angeordnet ist, das zumindest in Öffnungsrichtung mittelbar oder unmittelbar durch den Schieber (37) beaufschlagbar ist.Assembly according to one of the preceding claims, characterized in that on the drive (40) facing away from the slide (37) a filling valve (42) is arranged for the heating system, which at least indirectly in the opening direction directly or indirectly acted upon by the slide (37) is. Baueinheit nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Ventilkörper (41) des Füllventils (42) in Schließrichtung federkraftbeaufschlagt ist.Assembly according to one of the preceding claims, characterized in that the valve body (41) of the filling valve (42) is spring-loaded in the closing direction. Baueinheit nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass beim Verfahren des Schiebers (37) über seine engste Drosselstelle hinaus der Ventilkörper (41) des Füllventils (42) öffnend angesteuert wird.Assembly according to one of the preceding claims, characterized in that the valve body (41) of the filling valve (42) is openly actuated during the movement of the slide (37) beyond its narrowest throttle point. Baueinheit nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass in Öffnungsstellung des Füllventils (42) eine Leitungsverbindung zwischen einer Brauchwasser führenden Leitung (34) und einer Heizungswasser führenden Leitung (46) gebildet ist, wobei innerhalb des Armaturengehäuseteils (19) ein Rückschlagventil (45) vorgesehen ist, welches ein Rückströmen von Heizungswasser zum Brauchwasser verhindert.Assembly according to one of the preceding claims, characterized in that in the open position of the filling valve (42) a line connection between a service water leading line (34) and a heating water leading line (46) is formed, wherein within the fitting housing part (19) a check valve (45 ) is provided, which prevents a return flow of heating water to the hot water. Baueinheit nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass dem Rückschlagventil (45) nachgeschaltet Mittel (47) vorgesehen sind, welche ein Eindringen von Heizungswasser in den Brauchwasserkreis verhindern.Assembly according to one of the preceding claims, characterized in that the check valve (45) downstream Means (47) are provided which prevent penetration of heating water in the hot water circuit. Baueinheit nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass in Schließstellung des Füllventils (42) ein Überströmkanal vorgesehen ist, welcher den Raum (44) hinter dem Rückschlagventil (45) mit der Umgebung oder einer Abflusseinrichtung verbindet.Assembly according to one of the preceding claims, characterized in that in the closed position of the filling valve (42) an overflow channel is provided which connects the space (44) behind the check valve (45) with the environment or a drainage device. Baueinheit nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Schieber (37) der Drosselstelle (32) in einem Zylinder (36) verfahrbar ist, der den quer dazu mündenden zum Wärmetauscher (6) führenden Kanal (5) schneidet.Assembly according to one of the preceding claims, characterized in that the slide (37) of the throttle point (32) in a cylinder (36) is movable, which crosses the transverse to the heat exchanger (6) leading channel (5) cuts. Baueinheit nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der den Schieber (37) steuernde Motor (40) oberhalb des Wärmetauschers (6) zur Erwärmung des Brauchwassers angeordnet ist.Assembly according to one of the preceding claims, characterized in that the slider (37) controlling the motor (40) is arranged above the heat exchanger (6) for heating the service water.
EP06015791.4A 2006-07-28 2006-07-28 Assembly for a compact heating installation Not-in-force EP1884720B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL06015791T PL1884720T3 (en) 2006-07-28 2006-07-28 Assembly for a compact heating installation
EP06015791.4A EP1884720B1 (en) 2006-07-28 2006-07-28 Assembly for a compact heating installation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06015791.4A EP1884720B1 (en) 2006-07-28 2006-07-28 Assembly for a compact heating installation

Publications (2)

Publication Number Publication Date
EP1884720A1 true EP1884720A1 (en) 2008-02-06
EP1884720B1 EP1884720B1 (en) 2016-01-13

Family

ID=37102068

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06015791.4A Not-in-force EP1884720B1 (en) 2006-07-28 2006-07-28 Assembly for a compact heating installation

Country Status (2)

Country Link
EP (1) EP1884720B1 (en)
PL (1) PL1884720T3 (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2093517A1 (en) * 2008-02-22 2009-08-26 Grundfos Management A/S Component for a compact heating system
EP2093515A1 (en) * 2008-02-22 2009-08-26 Grundfos Management A/S Component for a compact heating system
EP2093516A1 (en) * 2008-02-22 2009-08-26 Grundfos Management A/S Component for a compact heating system
US20110308767A1 (en) * 2010-06-19 2011-12-22 Grundfos Management A/S Housing unit for a heating system
CN105180256A (en) * 2015-08-21 2015-12-23 张青林 Oil-heating type heating hot water and flue gas wall-hanging stove
EP3222929A4 (en) * 2014-11-19 2018-08-08 Kyungdong Navien Co., Ltd. Boiler having check valve integrated with water pipe line
EP3444537A4 (en) * 2016-04-11 2019-03-27 Mitsubishi Electric Corporation Heat storage device
EP3388721A4 (en) * 2015-12-07 2019-07-24 Kyungdong Navien Co., Ltd. Three-way valve
EP4124808A1 (en) * 2021-07-28 2023-02-01 Robert Bosch GmbH Heater with a bypass line and device for a heater
WO2024105026A1 (en) * 2022-11-14 2024-05-23 Grundfos Holding A/S Method and system for controlling a flow of fluid in a mixing loop

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CN105042673A (en) * 2015-07-02 2015-11-11 赖海荣 Space heater
CN110701787A (en) * 2019-10-31 2020-01-17 广州迪森家居环境技术有限公司 Gas wall-mounted boiler and quick hot water assembly thereof

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EP1188991A1 (en) * 2000-09-14 2002-03-20 Chaffoteaux Et Maury Hydraulic distribution valve for a mixed heating system
EP1528330A1 (en) * 2003-11-03 2005-05-04 Grundfos A/S Assembly for a compact heating installation
EP1710511A2 (en) * 2005-04-04 2006-10-11 Hermann S.r.l. Boiler with devices for optimising the supply of hot water for sanitary purposes, and the corresponding method

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DE19632604A1 (en) * 1996-08-13 1998-02-19 Wilo Gmbh Filling device for hydraulic assembly
EP0931988A2 (en) * 1998-01-22 1999-07-28 Wolf GmbH Method and installation for reducing the waiting time for the tapping of hot water
EP1188991A1 (en) * 2000-09-14 2002-03-20 Chaffoteaux Et Maury Hydraulic distribution valve for a mixed heating system
EP1528330A1 (en) * 2003-11-03 2005-05-04 Grundfos A/S Assembly for a compact heating installation
EP1710511A2 (en) * 2005-04-04 2006-10-11 Hermann S.r.l. Boiler with devices for optimising the supply of hot water for sanitary purposes, and the corresponding method

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2093517A1 (en) * 2008-02-22 2009-08-26 Grundfos Management A/S Component for a compact heating system
EP2093515A1 (en) * 2008-02-22 2009-08-26 Grundfos Management A/S Component for a compact heating system
EP2093516A1 (en) * 2008-02-22 2009-08-26 Grundfos Management A/S Component for a compact heating system
US20110308767A1 (en) * 2010-06-19 2011-12-22 Grundfos Management A/S Housing unit for a heating system
US9612036B2 (en) * 2010-06-19 2017-04-04 Grundfos Management A/S Housing unit for a heating system
EP3222929A4 (en) * 2014-11-19 2018-08-08 Kyungdong Navien Co., Ltd. Boiler having check valve integrated with water pipe line
CN105180256A (en) * 2015-08-21 2015-12-23 张青林 Oil-heating type heating hot water and flue gas wall-hanging stove
CN105180256B (en) * 2015-08-21 2018-05-15 张青林 Oily hot type heating hot water burnt gas wall hanging furnace
EP3388721A4 (en) * 2015-12-07 2019-07-24 Kyungdong Navien Co., Ltd. Three-way valve
EP3444537A4 (en) * 2016-04-11 2019-03-27 Mitsubishi Electric Corporation Heat storage device
EP4124808A1 (en) * 2021-07-28 2023-02-01 Robert Bosch GmbH Heater with a bypass line and device for a heater
WO2024105026A1 (en) * 2022-11-14 2024-05-23 Grundfos Holding A/S Method and system for controlling a flow of fluid in a mixing loop

Also Published As

Publication number Publication date
EP1884720B1 (en) 2016-01-13
PL1884720T3 (en) 2016-08-31

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