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EP3361182A1 - Module hydraulique pour une installation de chauffage ou de climatisation - Google Patents

Module hydraulique pour une installation de chauffage ou de climatisation Download PDF

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Publication number
EP3361182A1
EP3361182A1 EP17155234.2A EP17155234A EP3361182A1 EP 3361182 A1 EP3361182 A1 EP 3361182A1 EP 17155234 A EP17155234 A EP 17155234A EP 3361182 A1 EP3361182 A1 EP 3361182A1
Authority
EP
European Patent Office
Prior art keywords
valve
heat source
flow path
mixing valve
connection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP17155234.2A
Other languages
German (de)
English (en)
Other versions
EP3361182B1 (fr
Inventor
Peter Mønster
Thomas Blad
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.)
Grundfos Holdings AS
Original Assignee
Grundfos Holdings AS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Grundfos Holdings AS filed Critical Grundfos Holdings AS
Priority to EP17155234.2A priority Critical patent/EP3361182B1/fr
Priority to US16/483,999 priority patent/US11555617B2/en
Priority to CN201880010901.5A priority patent/CN110268205A/zh
Priority to PCT/EP2018/052425 priority patent/WO2018145975A2/fr
Publication of EP3361182A1 publication Critical patent/EP3361182A1/fr
Application granted granted Critical
Publication of EP3361182B1 publication Critical patent/EP3361182B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1066—Arrangement or mounting of control or safety devices for water heating systems for the combination of central heating and domestic hot water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
    • F24D19/1015—Arrangement or mounting of control or safety devices for water heating systems for central heating using a valve or valves
    • F24D19/1024—Arrangement or mounting of control or safety devices for water heating systems for central heating using a valve or valves a multiple way valve
    • F24D19/1033—Arrangement or mounting of control or safety devices for water heating systems for central heating using a valve or valves a multiple way valve motor operated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D3/00—Hot-water central heating systems
    • F24D3/02—Hot-water central heating systems with forced circulation, e.g. by pumps
    • 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
    • F24H9/144—Valve seats, piping and heat exchanger connections integrated into a one-piece hydraulic unit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2220/00—Components of central heating installations excluding heat sources
    • F24D2220/02—Fluid distribution means
    • F24D2220/0235—Three-way-valves

Definitions

  • the invention relates to a hydraulic unit for a heating or air conditioning system with at least one pump unit.
  • EP 2 397 777 A1 is such a unit or housing unit for a heating system known.
  • This unit has a circulation pump for conveying the heating medium and in particular a heat exchanger for heating domestic water. Further, a switching valve is provided to switch the circulation for the heating medium between said heat exchanger and a connected heating circuit.
  • the pump unit may promote the heating medium, in particular water, depending on the position of the switching valve either through the heat exchanger for heating domestic water or through a connected heating circuit of a building.
  • the unit also has connections for connection to a heat source, in particular a primary heat exchanger of a boiler, via which the heating medium is heated in the circuit.
  • the hydraulic unit according to the invention is intended for use in a heating or air conditioning, wherein when used in a heating system by the hydraulic unit, a heated liquid heat carrier, especially water, is promoted as the heating medium, while used in an air conditioner, a refrigerated liquid heat carrier becomes.
  • a heated liquid heat carrier especially water
  • a refrigerated liquid heat carrier becomes.
  • the hydraulic unit has at least one circulating pump unit, which serves to convey a liquid heat carrier, which serves as a heating or cooling medium, through the heating or air conditioning.
  • the heating medium is in the case of a heating system preferably water.
  • the circulating pump unit can in particular be a wet-running centrifugal pump unit, that is to say a centrifugal pump unit with a canned motor.
  • the hydraulic unit according to the invention furthermore has, like known hydraulic units, at least one return connection for a heating circuit and a first supply connection for a heating circuit. These connections can be connected in a conventional manner, a heating circuit through a building for heating the building. In the case of air conditioning, this may be a cooling circuit for cooling the building.
  • the temperature-controlled heating medium is channeled into the building via the flow connection and flows back into the hydraulic unit through the return connection.
  • the hydraulic unit according to the invention also has a heat source output and a heat source input to which a heat source, such as a boiler, in particular a gas boiler can be connected. About the heat source of the heat transfer medium is heated, ie heated in the case of heating and cooled in the case of air conditioning.
  • the heat source outlet in the hydraulic unit is fluid-conductively connected to the return port.
  • the liquid entering the return port is passed on to the heat source outlet and from there to the heat source for re-tempering.
  • the first flow connection is connected fluid-conductively in the hydraulic unit to the heat source input, so that the tempered in the heat source liquid can be supplied via the heat source input through the hydraulic unit to the first flow connection.
  • the circulating pump assembly is located either in the flow path between the return port and the heat source outlet or in a flow path between the heat source inlet and the first flow port.
  • the circulating pump unit is arranged so that it is the heat carrier or as a heat carrier serving liquid through the entire circuit, that is, by a arranged on the flow connection and the return connection heating circuit and by the heat source, which is connected to the heat source and the heat source input, promotes.
  • the hydraulic unit has a second flow connection, which serves to be able to supply at least one second heating circuit with a heat carrier, which has a different temperature than the heat carrier, which is supplied to the first flow connection.
  • a second flow connection which serves to be able to supply at least one second heating circuit with a heat carrier, which has a different temperature than the heat carrier, which is supplied to the first flow connection.
  • At the assembly thus at least two flow connections are available, which can provide different flow temperatures. This is useful, for example, for heating systems, which has both a floor heating and conventional radiators, as then z. B. via the first flow connection the normal radiator can be supplied with a higher flow temperature, while the circuits of the floor heating can be supplied with a lower flow temperature via the second flow connection.
  • a mixing valve is arranged in the flow path from the heat source inlet to the second flow connection and / or in the flow path from the return connection to the second flow connection. Through the mixing valve, the mixing ratio between the two liquid flows can be adjusted, so that the temperature at the second flow connection can be changed. In the case of a heating system of the liquid from the heat source inlet is colder liquid from the Return connection admixed.
  • warmer liquid from the return port may be added to the cold liquid from the heat source inlet.
  • the mixing valve is designed to adjust the flow in the respective flow path.
  • the mixing valve may preferably be designed in such a way that it can completely close off the respective flow path so that no admixing of hot or cold liquid takes place at all.
  • the circulating pump unit is preferably connected via a suction-side flow path to the return port, through which the heat carrier is sucked by the circulating pump unit.
  • the hydraulic unit further comprises at least a portion of a first pressure-side flow path, and preferably at least a portion of a second pressure-side flow path. That is, the hydraulic unit is designed so that it is used in a heating or air conditioning use, in which connect to the circulating pump unit at least two pressure-side flow paths through which flows the funded by the circulating pump unit heat transfer medium.
  • a pressure-side arrangement of the flow paths means that there is a pressure in these flow paths or the mentioned sections which is higher than on the suction side of the circulating pump unit, that is to say as in the suction-side flow path.
  • the pressure loss in the pressure-side flow paths corresponds to less than half the pressure difference between the suction and pressure side of the circulating pump unit.
  • the pressure-side flow paths are upstream of the consumer in the heating or air conditioning to which the heating or cooling capacity is substantially removed and in which the greatest pressure losses occur.
  • the first and the second flow paths open in a common flow path, wherein the common flow path and the mixing point at which the first and second flow paths open into the common flow path are likewise arranged in the hydraulic unit.
  • the common flow path leads to the second flow connection.
  • the mixing valve is arranged in at least one of said sections of the two pressure-side flow paths.
  • the mixing valve serves to vary the flow cross-section in the respective flow path in order to change the flow through the associated flow path.
  • a cross-sectional relationship between the first and second pressure-side flow paths can be changed via the mixing valve, whereby the mixing ratio in which the flows are mixed at the mixing point or in the mouth in the common flow path.
  • the common flow path opens into the second flow connection
  • one of the two flow paths additionally leads to the first flow connection in addition to the orifice into the common flow path.
  • a heating circuit directly receives the heat transfer medium with the temperature from one of the two flow paths, while the other heating circuit receives the heat transfer medium via the second supply connection with the temperature after mixing the flows from both flow paths.
  • the second heating circuit may be a floor heating, which is operated with a lower flow temperature
  • the first heating circuit is a heating circuit with normal radiators, which is supplied with a higher flow temperature.
  • the described first flow connection for a first heating circuit is connected to that of the two pressure-side flow paths, which is the heat carrier leads, which was previously tempered to a heat or cold source, that is fed via the heat source input.
  • the other pressure-side flow path preferably leads liquid, which is supplied from a return of the heating or cooling circuit, ie the return port.
  • first and second flow paths are formed, in particular those portions in which the mixing valve is arranged.
  • first and the second pressure-side flow paths are not completely formed in the hydraulic unit, but rather additionally run by other subsequent to the hydraulic unit components.
  • the heat source for example, a heat exchanger to be integrated with the hydraulic unit.
  • the mixing valve may be arranged in only one of the first and second pressure-side flow paths for changing the cross-section of this pressure-side flow path. This means that the cross section of the other flow path is constant.
  • the admixture of liquid from the flow path to the mixing valve can be varied by adjusting it.
  • the mixing valve in the first and the second pressure-side flow path in such a way that the cross-sections of the first and second pressure-side flow paths, in particular simultaneously, can be changed via the mixing valve. That is, in this arrangement, there is a valve element which is divided into sections engages both the first and the second flow path, or two mutually coupled valve elements, of which a first valve element is located in a portion of the first flow path and a second valve element in a portion of the second flow path.
  • the coupling of the movement of the valve elements can be done mechanically or electronically via appropriate control of the drives of the valve elements.
  • the mixing valve is formed so that, when the cross section of the first flow path is increased, at the same time the cross section of the second flow path is reduced by the same amount. More preferably, the mixing valve may be formed so that at least one of the flow paths can also be completely closed.
  • the mixing valve is designed as a three-way mixing valve.
  • a mixing valve preferably simultaneously contains the mixing point at which the first flow path and the second flow path open into a common flow path.
  • the three-way mixing valve thus preferably has two inputs, of which a first input to the first pressure-side flow path and a second input to the second pressure-side flow path is connected.
  • the third port of the three-way mixing valve forms an exit which is connected to or defines the common flow path.
  • the three-way mixing valve has a valve element, by the movement of the cross sections of the two inputs can be changed and thus the aspect ratio between the first and the second flow path can be changed.
  • the mixing valve has two inputs and an output, as has been described above, for example, wherein a first input of the mixing valve with the heat source input connected is.
  • a second input of the mixing valve is connected to the pressure side of the Umisselzpumpenaggregates upstream of the heat source output. This means that a flow is supplied to the first input of the mixing valve of the circulating pump unit, which has previously flowed through a heat source connected to the heat source and the heat source input and was heated there.
  • the second input of the mixing valve is connected directly to the pressure side of Umisselzpumpenaggregates upstream of the heat source outlet, so that flows to this second input of the mixing valve, a flow which has not flowed through the heat source and thus has a temperature corresponding to the input side temperature of Umisselzpumpenaggregates.
  • the suction side of the circulating pump unit is connected to the return port, to which the heat carrier usually has the lowest temperature in a heating circuit. That is, in this embodiment, the first pressure-side flow path is passed through the heat source, while the second pressure-side flow path is guided parallel to the heat source past the heat source to the mixing valve.
  • both flows are mixed, whereby by adjusting the mixing valve, the cross-sectional ratio of the flow paths can be changed so that the mixture of both flows and thus the temperature of the resulting mixture due to the different temperatures in the two flow paths can be changed.
  • the outlet of the mixing valve is preferably connected to the second flow connection, which is provided for connection of a second heating circuit or cooling circuit.
  • a floor heating can be connected to this flow connection, which usually with a is operated lower flow temperature than by the heat source such.
  • B. provides a primary heat exchanger.
  • the mixing valve may be integrated in a pump housing of the circulating pump unit.
  • a housing of the mixing valve may be formed integrally with at least a portion of the pump housing, in particular as an injection molded part made of plastic. This allows a very compact design and in particular a cost-effective production and easy installation.
  • the mixing valve preferably has a movable valve element and an electric drive motor which moves this valve element and which is preferably designed as a stepping motor.
  • the valve element can be moved to different switching positions in which it sets the aspect ratio between the first and the second flow path differently.
  • a stepper motor drive motor the valve element can be moved to defined positions, without the need for additional sensors for determining the position of the valve element.
  • the valve element may be designed to pivot, rotate or linearly movable, wherein in each case a corresponding coupling is provided with the drive motor.
  • the drive motor can also be designed as a rotating or linear-acting drive motor.
  • the movable valve element of the mixing element is preferably arranged in the interior of a valve housing, while the drive motor is arranged outside of this valve housing, wherein the valve element is pivotable about a pivot axis and a transverse to the Swivel axis extending actuating lever is connected to the drive motor.
  • the actuating lever extends through an elastic seal out of the valve housing.
  • the actuating lever can be moved outside of the valve housing, for example, by a linearly acting drive motor to pivot the valve element in the interior of the housing.
  • a linearly movable valve element would be movable via such an actuating lever in the interior of the valve housing.
  • the pivoting movement has the advantage that the valve element can be firmly coupled to the operating lever without further guide elements, in particular integrally formed.
  • valve element and operating lever can be very easily manufactured as a plastic injection molded part as a one-piece component.
  • the valve element preferably has two valve faces facing away from one another, which can be approached or moved away from opposite valve seats in order to change the flow cross sections. For complete sealing, the valve surface may come to rest on the valve seat.
  • the two valve seats are preferably opposite each other and the valve element with two valve faces facing away from each other is arranged between the valve seats opposite each other.
  • the hydraulic unit comprises a secondary heat exchanger for tempering, in particular heating, of service water and a switching valve, which is arranged such that by the switching valve connected to the Umisselzpumpenaggregat Flow path between the secondary heat exchanger and at least one formed on the unit heating circuit is reversible.
  • the flow path through the secondary heat exchanger preferably upstream of the described mixing valve and downstream of the heat source input, as described above, from the pressure-side flow path, so that the heated in the heat source heat transfer medium can be passed through the secondary heat exchanger to there dhw, which by a second side of the secondary heat exchanger flows to heat.
  • the switching valve makes it possible to shut off the flow path through the secondary heat exchanger and instead to direct the heated heat carrier through the flow connections formed on the unit.
  • the heating medium or the heat carrier can be passed through the connected heating circuits to heat a building.
  • the changeover valve switches over the flow path so that the heating circuits are switched off and instead the heat transfer medium for heating the service water is passed through the secondary heat exchanger.
  • the switching valve may be arranged in addition to the described arrangement on the input side of the secondary heat exchanger alternatively also on the output side of the secondary heat exchanger, ie in particular a return to the suction side of the circulating pump unit.
  • the switching valve may switch between a flow path from the return port to the circulation pump unit and a flow path from the secondary heat exchanger to the circulation pump unit.
  • the flow is thus promoted either by the secondary heat exchanger or by the heating circuits connected to the flow connections and subsequently by the return connection.
  • the switching valve preferably has a movable valve element and an electric drive motor which moves this valve element and which is preferably designed as a stepping motor.
  • the valve element is preferably movable back and forth between two valve seats, whereby this valve element can also be pivotally movable between two opposite valve seats.
  • the drive motor is preferably arranged outside of a valve housing of the changeover valve and connected to the valve element via an actuating lever.
  • the actuating lever is preferably led out of the valve housing by an elastic seal in a wall of the valve housing.
  • the valve element of the mixing valve is formed similar to the valve element of the switching valve and / or the drive motor of the mixing valve is formed similar to the drive motor of the switching valve.
  • the similar design means that the elements are substantially the same design, for example, have a same basic shape or basic configuration.
  • the valve elements of mixing valve and changeover valve are identical and / or the drive motors of the mixing valve and the changeover valve are identical. This makes it possible to significantly reduce the variety of parts.
  • the elastic passage of the valve element or its actuating lever through a wall of the valve housing may be formed at the mixing valve similar or identical to the switching valve.
  • the configuration and geometric arrangement of the valve seats in the switching valve is similar or identical to the configuration and geometric arrangement of the valve seats of the mixing valve. That is, according to the invention, substantially identical or identical valves can be used for different purposes, namely once as a mixing valve and once as Switching valve. The difference in the function is preferably achieved only by driving the drive motor.
  • valve element While in the switching valve of the drive motor, the valve element moves only between two switching positions in which one of the two valve seats is always closed, the valve element is moved between several switching positions in steps or possibly also continuously in the mixing valve to vary the degree of opening of the two valve seats alternately that is, while the opening cross-section is increased at a valve seat, preferably the opening cross-section is reduced at the other valve seat to change the mixing ratio of the outflowing from the valve seats flows to each other. Also in the mixing valve, if appropriate, the valve element can be brought into contact with one of the valve seats in order to completely close this flow path.
  • the drive motor of the mixing valve and the drive motor of the changeover valve on a common motor driver, in particular a stepper motor driver, which selectively drives the drive motor of the mixing valve or the drive motor of the changeover valve.
  • a common motor driver in particular a stepper motor driver, which selectively drives the drive motor of the mixing valve or the drive motor of the changeover valve.
  • the mixing valve can be moved by the motor driver and the corresponding drive motor to adjust the temperature of the heating medium for at least one heating circuit. In this operating state, however, the switching valve does not have more be switched.
  • the drive motor of the mixing valve and the drive motor of the changeover valve are preferably self-holding, so that they maintain their position in the de-energized state.
  • the mixing valve preferably has a mixer control device, which controls the adjustment of the mixing valve to reach a desired liquid temperature on the outlet side of the mixing valve, that is in the common flow path, and is preferably arranged at least partially with a pump control device of the circulation pump assembly in a common electronics housing.
  • This electronics housing can further preferably be an electronics housing mounted directly on the circulating pump unit or integrated in the circulating pump unit.
  • the required motor driver for driving the drive motor of the mixing valve can be integrated in this mixer control device or else be arranged externally, so that the mixer control device sends a control command to the motor driver, which in turn drives the drive motor.
  • the mixer control device may also be integrated into a higher-level heating or cooling system control, but may also be designed separately therefrom.
  • the motor driver for driving the drive motor of the mixing valve and the drive motor of the switching valve is integrated in such a heating control
  • the mixer control device is integrated in the hydraulic unit and more preferably in a pump control device.
  • the mixer control device then sends a control command for setting the mixing valve to the heating control, which causes the drive motor of the mixing valve via the existing there motor driver, to approach a desired position.
  • the mixer control device is integrated in a higher-level heating or air conditioning control, it would also be conceivable to integrate the required motor driver in the hydraulic unit and more preferably in the pump control device, so that the drive motors are connected there to the motor driver, which receives its control commands in turn from a higher-level control device, such as heating control.
  • a common motor driver in these a switching device is integrated, which switches the control between two outputs to which the two drive motors are connected, or optionally addresses these outputs.
  • the circulation pump unit is arranged in a first assembly of the hydraulic unit, while the mixing valve is arranged in a second assembly of the hydraulic unit, wherein the first assembly having the pressure side of the Umisselzpumpenaggregates connected heat source output and the second assembly the having the mixing valve connected to the heat source input, wherein the heat source output and heat source input for connecting a heat source connecting them such.
  • B. enes primary heat exchanger of the heating or air conditioning are provided.
  • Such a hydraulic unit can be installed in a heating system, for example in a compact heating system, and there preferably provides essentially all internal flow paths, so that the hydraulic unit only needs to be connected to the existing in the heating system primary heat exchanger, which serves as a heat source ,
  • the heat source input is connected to a first flow connection, which is provided for connection of a first heating circuit, and to a first input of the mixing valve.
  • a tempered in the heat source heat transfer medium can be supplied to both the first flow connection and the mixing valve.
  • the heat transfer medium is in the tempered by the heat source temperature at.
  • the temperature can be changed accordingly by admixing a heat carrier flow from the second pressure-side flow path in order to provide a correspondingly different temperature-controlled heat transfer medium at a second feed connection.
  • the assembly has a secondary heat exchanger for controlling the temperature of service water and in the second assembly is connected to the heat source input connected first heat exchanger port, which is connected to a heating water inlet of the secondary heat exchanger.
  • a heating medium or heat transfer medium is supplied to the heating water inlet to the secondary heat exchanger, which has previously been heated or tempered in the heat source.
  • a switching valve is preferably arranged, which has a first and a second input and an output and is designed to switch a flow path between the two inputs, wherein the first input connected to a Walkerwasserausgang the secondary heat exchanger and the second input to the return port is.
  • the heating medium or the heat transfer medium can be promoted either by the secondary heat exchanger or by the ends of the return line heating circuits.
  • the switching valve is preferably designed in the manner described above.
  • the described two assemblies of the hydraulic unit are preferably arranged at two opposite ends of the secondary heat exchanger and via the secondary heat exchanger, a connected heat source and the second flow path for connecting the pressure side of the circulating pump unit connected to the second input of the mixing valve.
  • the assemblies are preferably formed one or more parts of plastic and include in addition to the described flow paths for the heating medium preferably additionally flow paths for the hot water to be heated, which connect the secondary heat exchanger with corresponding service water connections to the hydraulic unit.
  • a service water inlet and a line for heated service water are connected to the service water connections.
  • the described hydraulic unit can, as described above, preferably be integrated in a heating system, in particular a compact heating system. In an alternative embodiment, however, it is also possible to use the hydraulic unit according to the invention as a self-sufficient unit, so that the locally in a building can be connected by external pipes with a heating system.
  • the structural unit preferably has fastening elements which are designed to fasten the structural unit to a wall.
  • a support element may be provided which has these fastening elements and serves as a supporting structure for the hydraulic unit according to the invention.
  • This support element is preferably made of metal, for example of a metal sheet.
  • the remaining parts of the hydraulic unit, which define the hydraulic connections described are preferably made of plastic, in particular plastic injection molded parts. It is advantageous to attach such an arrangement to a support element which receives the holding forces, so that the plastic parts, which are the hydraulic flow paths define be relieved of such holding forces.
  • the support element may be part of a housing which surrounds the entire hydraulic unit.
  • the return port, the first and the second flow connection, the heat source outlet, the heat source inlet and, if present, preferably also a service water inlet and a service water outlet with hydraulic connection elements for connecting external pipelines are provided.
  • the hydraulic elements of the assembly are made of plastic, it is advantageous to form the hydraulic connection elements as metal inserts, which serve to connect external pipelines.
  • the hydraulic connection elements preferably have outwardly directed connection threads, to which external pipes can be screwed.
  • the described hydraulic connection elements are connected in addition to the connection with the flow paths in the interior of the structural unit with at least one mechanical support element.
  • This support element is more preferably the support element which has been described above and serves for fastening the hydraulic unit to a wall.
  • the support element, which is connected to the hydraulic connection elements may be mechanically connected to a further support element, which carries the hydraulic unit and is designed for attachment to a wall.
  • the connection of the hydraulic connection elements with one or more support elements has the advantage that mechanical forces which are exerted on connecting the external pipes to the hydraulic connection elements are transmitted to the support element and thus of those elements which define the hydraulic flow paths, be kept away.
  • the mechanical support elements which hold the hydraulic connection elements are preferably formed as metal sheet metal components.
  • FIG. 1 shows a heating system, which is a hydraulic unit 2 according to the invention, a heat source in the form of a primary heat exchanger 4 and two heating circuits 6 and 8 has.
  • the heating circuit 6 is a heating circuit, which by radiator 10 (in Figure schematically only one shown), while the heating circuit 8 is a heating circuit, which forms a floor heating. It should be understood that the heating circuit 8 can in turn be divided into several floor heating circuits.
  • the primary heat exchanger 4 is in particular part of a gas boiler.
  • the primary heat exchanger 4 and the hydraulic unit 2 can be integrated in total in a compact heating system, in particular a gas boiler.
  • the hydraulic unit 2 integrates all the essential hydraulic components that are required to operate the heating system.
  • the hydraulic unit 2 has a heat source outlet 12 and a heat source inlet 14, to which the primary heat exchanger 4 is connected via corresponding pipelines. From the heat source outlet 12, the heating medium to be tempered or the heat transfer medium to be tempered (preferably water) leaves the hydraulic unit 2. Through the heat source input 14, the temperature-controlled heating medium re-enters the hydraulic unit 2. To connect the heating circuits, the hydraulic unit 2 has a first flow connection 16, to which the first heating circuit 6 is connected by the radiator 10, and a second flow connection 18, to which the second heating circuit 8 is connected for underfloor heating. Furthermore, the hydraulic unit 2 has a return port 20 to which the common return of the two heating circuits 6 and 8 is connected.
  • the hydraulic unit 2 shown here also serves to heat hot water and has to a service water inlet 22 and a hot water outlet 24.
  • a service water inlet 22 cold or hot water to be heated is supplied from the service water outlet 24 enters the tempered or heated service water 24 from.
  • the connections are preferably provided with suitable connecting elements or fittings 26, which are formed in this embodiment as threaded connections.
  • the hydraulic unit 2 has a circulation pump unit 28, on the input side or suction side of which a changeover valve 30 is located, which is designed as a 3/2-way valve.
  • the switching valve 30 is connected at its output 32 to the suction side of the circulating pump unit 38.
  • a first input 34 of the switching valve 30 is connected to the heating water outlet 36 in the first hydraulic side of a secondary heat exchanger 38, which serves for domestic water heating.
  • the second input 40 of the switching valve 30 is connected to the return port 20 by a flow path formed in the interior of the hydraulic unit 2.
  • the switching valve 30 has a drive motor 42 designed as a stepper motor.
  • the drive motor 42 moves a valve element 44 (see FIG. Fig. 6 ) between two switch positions, wherein in FIG.
  • valve element 44 closes a first valve seat 46 which communicates with the inlet 34. In this switching position, the flow path from the return port 20 through the second input 30 to the circulating pump unit 28 is thus opened. In a second switching position, the valve element 44 closes a second valve seat 48 which is in communication with the return port 20. In this switching state, the flow path through the return port 20 to the circulating pump unit 28 is thus closed and the flow path from the heating water outlet 36 of the secondary heat exchanger 38 to the circulating pump unit 28 is opened.
  • the flow path divides into two flow paths 50 and 52, the first flow path 50 passing through the heat source outlet 12, the primary heat exchanger 4 and the heat source inlet 14 and from there to the first flow connection 16. That is to say, from the first flow path 50, there are two sections inside the hydraulic unit 12, namely the section up to the heat source outlet 12 and the section from the heat source inlet 14 to the first flow connection 16. The remainder of the first flow path is through the external piping and Primary heat exchanger 4, which are connected to the heat source outlet 12 and the heat source input 14 formed.
  • the second flow path 52 which runs on the pressure side of the circulating pump unit 28, runs in the interior of the hydraulic unit 2 to a mixing valve 54.
  • the mixing valve 54 is designed as a 3-way valve and has two inputs 56 and 58.
  • the first input 56 is in hydraulic communication with the heat source input 14, while the second input 58 is connected via the flow path 52 directly to the pressure side of the Umisselzpumpenaggregats 28.
  • the second input 58 is supplied from the pressure side of the circulation pump unit 28 heating medium, which does not flow through the primary heat exchanger 4 and thus has substantially the temperature which has the heating medium when entering the return port 20.
  • the mixing valve 54 has an outlet 60, which is connected to the second flow connection 18 via a common pressure-side flow path.
  • the temperature or the flow temperature at which the heating medium exits from the second flow connection 18 can be adjusted.
  • the heating medium, which was heated by the primary heat exchanger 4, and which is supplied from the heat source inlet 14 to the mixing valve 54, not tempered heating medium are mixed via the flow path 52 in order to reduce the flow temperature at the second flow connection 18 with respect to the heating medium temperature at the heat source inlet 14 in the case of a heating system. Since the first supply port 16, the heating medium is supplied directly from the heat source input 14, the flow temperature at the first flow port 16 is substantially equal to the output temperature of the primary heat exchanger 4. Thus, different flow temperatures can be provided at the flow ports 16 and 18.
  • the mixing valve 54 also has a drive motor 62, which is designed as a stepper motor. Via the drive motor 62, a valve element 64 is moved in the interior of the mixing valve 54 between two valve seats 66 and 68. In this case, the valve seat 66 is connected to the input 58 and the valve seat 68 to the input 56. Via the stepping motor 62, the valve element 64 can assume different intermediate positions between the two valve seats 66 and 68, so that the free flow cross section from the valve seats 66 and 68 to the outlet 60 is varied.
  • the ratio of the flow cross-sections of the inputs 56 and 58 to one another varies, whereby the mixing ratio between the flows of heating medium flowing through them can be varied.
  • a flow path which connects the heat source inlet 14 to a heating water inlet 70 of the hydraulically first side of the secondary heat exchanger 38 is located in the interior of the hydraulic unit 2.
  • the heating medium can flow from the heat source inlet 14 via the heating water inlet 70 through the secondary heat exchanger 38 to the heating water outlet 36 and from there via the switching valve 30 into the circulating pump unit 28.
  • the heating medium via the secondary heat exchanger 38 to heat a domestic water stream, which of the Domestic hot water inlet 22 flows through the hydraulically second side of the secondary heat exchanger 38 to the hot water outlet 24.
  • FIG. 2 shows a perspective view of such a hydraulic unit 2.
  • the hydraulic unit 2 consists essentially of two assemblies 72 and 74, which are connected to each other via the secondary heat exchanger 38 and the second flow path 52 which is formed as a separate pipeline.
  • the assembly 72 includes, as an essential component, the circulation pump unit 28, to which the pressure side of the heat source outlet 12 and the circulating between pump assembly 28 and heat source outlet 12 branching second pressure-side flow path 52 connects.
  • the first assembly 72 also has the return port 20 and the switching valve 30.
  • the first input 34 of the changeover valve 30 is connected directly to the heating water outlet of the secondary heat exchanger 38.
  • This flow path and the flow path from the return port 20 to the switching valve 30 and the flow path from the second output 60 of the switching valve 30 to the circulating pump unit 28 are formed in a single or multi-part molded plastic part.
  • This also includes the flow path from the service water inlet 22 to a second hydraulic side input port 76 of the secondary heat exchanger 38.
  • a filter 78 and a flow sensor 80 are disposed in the flow path from the service water inlet 22 to the input port 76.
  • the flow sensor 80 detects whether there is a flow in the flow path or not and becomes used to detect whether heated service water is needed or not.
  • the first assembly 72 further includes other components such as a breather 82 and a pressure relief valve 84 in a conventional manner.
  • the second module 74 has the heat source inlet 14, the first flow connection 16, the second flow connection 18 and the process water outlet 24. Further, in the second assembly 74, the second pressure-side flow path 52, which is designed as a separate pipeline, opens into the mixing valve 54 likewise arranged in the second assembly 24.
  • the flow paths from the described connections in the second assembly 74 to the mixing valve 54 and to the secondary heat exchanger 38 are also formed in plastic moldings, which may be one or more parts.
  • two temperature sensors 86 and 88 are arranged, which on the one hand the temperature in the flow path from the secondary heat exchanger 38 to the hot water outlet 24, ie the temperature of the heated service water, and on the other hand, the temperature in the flow path from the mixing valve 54 to the second flow connection 18, ie the second flow temperature detect.
  • the circulation pump unit 28 Based on the temperature sensor 86 in the hot water flow path, the circulation pump unit 28 can be controlled in its rotational speed to adjust the heat input to the secondary heat exchanger 38 and thus the hot water temperature.
  • the mixing valve Via the signal of the temperature sensor 88 on the output side of the mixing valve 54, the mixing valve can be controlled to adjust the mixing ratio so that a desired flow temperature is achieved.
  • the mixing valve 54 and the switching valve 30 are, as shown in the Figures 5 and 6 can be seen, formed substantially the same.
  • the arrangement of the valve seats 46 and 48 and the valve element 44 substantially corresponds to the arrangement of the valve seats 66 and 68 and the valve member 64.
  • the drive motor 42 corresponds to the drive motor 62.
  • the different functionality of the two valves is only by different control of the drive motors 42nd and reaches 62, while the switching valve 30, the valve element 44 is moved only between two switching positions, the drive motor 62 is controlled at the mixing valve 54 so that intermediate positions between the two end positions, which by the contact of the valve element 64 to the valve seats 66 and 68 defined, can be approached.
  • the valve elements 44 and 64 are each connected via an actuating lever 90 with the linear motion causing drive motor 42 and 62, respectively.
  • the actuating lever 90 is guided by a sealing collar 92 and performs a pivoting movement about a pivot axis Y in the region of a housing wall of the valve housing.
  • the substantially same design of the switching valve 30 and the mixing valve 54 has the advantage of the same components and beyond control advantages, since only a stepper motor driver is required to drive the drive motors 42 and 62.
  • the drive motors 42 and 62 need never be operated simultaneously, so that a single motor driver is sufficient for both.
  • the described hydraulic unit 2 can either be integrated into a heating system such as a compact heating system or a boiler or, as the basis of Figures 3 . 4 and 7 is described, be used independently.
  • the hydraulic unit 2 which in FIG. 2 shown hydraulic assembly 2, arranged in a housing 94.
  • the housing 94 simultaneously forms a mechanical support element.
  • the housing 94 is made from a lower housing part 96, an upper housing part 98 and a front plate 100.
  • the housing 94 is preferably formed from sheet metal.
  • the lower housing part 96 has fastening elements in the form of holes 102 on its rear side. Through the holes 102 z. B. screws are guided, with which the housing base 96 can be attached to a wall.
  • connection elements 26 can be mechanically fixed directly to the base plate 103 in the periphery of the through-holes 104.
  • forces acting on the connection elements 26 by external pipelines are transferred directly to the base plate 103 and thus via the lower housing part 96 to the fastening elements 102 without loading the plastic molded parts which define the hydraulic flow paths with excessive forces.
  • connection elements 26 of the heat source outlet 12 and the heat source input 14 engage and can be mechanically fixed directly to the upper housing part 98 accordingly.
  • forces which act on the connection elements 26 of the heat source outlet 12 and the heat source input 14, via the upper housing part 58 and connected thereto lower housing part 98 also transferred directly to the fasteners 102, without the structures inside the hydraulic unit 2 with excessive forces strain.
  • the housing 94 is closed by a front plate 100, which has an opening 108 through which the axial front end of the circulating pump unit 28 may extend to the outside or remains visible from the outside.
  • a control device 110 is arranged, which assumes control functions, which would usually be taken over by the heating control in integrating the hydraulic unit 2 in a heating system.
  • the control device 10 has a first connection region 112, to which a mains connection cable is connected.
  • the control device 110 has a second connection region 114, to which the drive motors 42 and 62 are connected via connection lines (not shown here).
  • this second connection region 114 is connected to temperature sensors 86, 88 and the flow sensor 80 via further connecting lines (not shown).
  • the control device 110 thus assumes control of the mixing valve 54 on the one hand and control of the reversing valve 30 on the other hand.
  • a stepper motor driver is arranged in the control device 110, which drives the drive motors 42 and 62, wherein a single stepping motor driver is sufficient as described above.
  • two stepper motor drivers can also be provided.
  • the control device 110 detects a hot water requirement via the flow sensor 80, it controls the drive motor 42 such that the flow path is closed by the heating circuits and the flow path for the heating medium through the secondary heat exchanger 38 is opened.
  • the control device 110 controls the drive motor 62 to adjust the mixing ratio in the mixing valve 54 so that a predefined starting temperature is reached at the temperature sensor 88.
  • control device 110 is also completely integrated in the electronics housing 116 of the circulating pump unit could be or could be arranged outside the housing 94.
  • the self-sufficient functionality of the hydraulic unit 2 can also be found in a home station use, in which case the heat source outlet 12 and the heat source input 14 is connected to the radiant heating circuit of a building.
  • the pipe section 118, which is in communication with the heat source inlet 14, can then be replaced by a heat meter.

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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)
  • Air-Conditioning For Vehicles (AREA)
EP17155234.2A 2017-02-08 2017-02-08 Module hydraulique pour une installation de chauffage ou de climatisation Active EP3361182B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP17155234.2A EP3361182B1 (fr) 2017-02-08 2017-02-08 Module hydraulique pour une installation de chauffage ou de climatisation
US16/483,999 US11555617B2 (en) 2017-02-08 2018-01-31 Hydraulic unit for a heating or air-conditioning system
CN201880010901.5A CN110268205A (zh) 2017-02-08 2018-01-31 用于供热或空调设备的液压结构单元
PCT/EP2018/052425 WO2018145975A2 (fr) 2017-02-08 2018-01-31 Unité modulaire hydraulique pour système de chauffage ou de climatisation

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Application Number Priority Date Filing Date Title
EP17155234.2A EP3361182B1 (fr) 2017-02-08 2017-02-08 Module hydraulique pour une installation de chauffage ou de climatisation

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EP3361182A1 true EP3361182A1 (fr) 2018-08-15
EP3361182B1 EP3361182B1 (fr) 2020-03-25

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EP (1) EP3361182B1 (fr)
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IT201900000472A1 (it) * 2019-01-11 2020-07-11 O T M A S N C Di Spaggiari E C Assieme idraulico per un impianto combinato per il riscaldamento di ambienti e per la produzione di acqua calda sanitaria e caldaia murale provvista di tale assieme
EP3705785A1 (fr) * 2019-03-08 2020-09-09 Marc Pommerening Station de raccordement pour milieux liquides pour au moins une section de bâtiment, en particulier pour une unité d'habitation
CN113124450A (zh) * 2021-04-28 2021-07-16 扬州华大锅炉有限公司 一种具有高温热水锅炉回水升温功能的锅炉供热系统
DE102022100341A1 (de) 2022-01-10 2023-07-13 Vaillant Gmbh Heizgerät, Verfahren zum Betreiben eines Heizgerätes, Computerprogrammprodukt, Regel- und Steuergerät und Verwendung eines Schrittmotorventils
WO2025186730A1 (fr) * 2024-03-08 2025-09-12 Fugas S.P.A. Dispositif modulaire de distribution d'eau chaude dans une pièce et système équipé d'un tel dispositif

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AU2020438326B2 (en) * 2020-03-23 2023-12-07 Toshiba Carrier Corporation Hot water generation device
CN114923269A (zh) * 2022-05-18 2022-08-19 广东开利暖通空调股份有限公司 地暖多联机的水力模块控制系统及其控制方法

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CN113124450A (zh) * 2021-04-28 2021-07-16 扬州华大锅炉有限公司 一种具有高温热水锅炉回水升温功能的锅炉供热系统
DE102022100341A1 (de) 2022-01-10 2023-07-13 Vaillant Gmbh Heizgerät, Verfahren zum Betreiben eines Heizgerätes, Computerprogrammprodukt, Regel- und Steuergerät und Verwendung eines Schrittmotorventils
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Also Published As

Publication number Publication date
EP3361182B1 (fr) 2020-03-25
US20200018491A1 (en) 2020-01-16
WO2018145975A3 (fr) 2018-10-18
CN110268205A (zh) 2019-09-20
US11555617B2 (en) 2023-01-17
WO2018145975A2 (fr) 2018-08-16

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