EP2629019A1 - Unité de boîtier pour un appareil de chauffage - Google Patents

Unité de boîtier pour un appareil de chauffage Download PDF

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Publication number
EP2629019A1
EP2629019A1 EP12156038.7A EP12156038A EP2629019A1 EP 2629019 A1 EP2629019 A1 EP 2629019A1 EP 12156038 A EP12156038 A EP 12156038A EP 2629019 A1 EP2629019 A1 EP 2629019A1
Authority
EP
European Patent Office
Prior art keywords
housing unit
unit according
housing
chamber
heating
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
EP12156038.7A
Other languages
German (de)
English (en)
Other versions
EP2629019B1 (fr
Inventor
Bent Døssing
Søren Søgaard Jensen
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 PL12156038.7T priority Critical patent/PL2629019T3/pl
Priority to EP12156038.7A priority patent/EP2629019B1/fr
Priority to CN201380009806.0A priority patent/CN104114952B/zh
Priority to PCT/EP2013/050859 priority patent/WO2013120649A1/fr
Publication of EP2629019A1 publication Critical patent/EP2629019A1/fr
Application granted granted Critical
Publication of EP2629019B1 publication Critical patent/EP2629019B1/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
    • 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
    • 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
    • F24D3/08—Hot-water central heating systems in combination with systems for domestic hot-water supply

Definitions

  • the invention relates to a housing unit for a heater with the features specified in the preamble of claim 1.
  • housing units for heaters typically mounted wall-mounted gas-fired heating
  • the core of the structure is always a pump, a changeover valve, which optionally line connected one or the other heating circuit with a primary heat exchanger and a plate heat exchanger, which is used for domestic water heating.
  • a bypass line typically a breather, a pressure relief valve, sensors, such as pressure gauges, flow meters and the like, and other components.
  • housing units which are typically made of plastic injection, vorzuhalten, which record not only the line connections between the components but also a large part of the components.
  • a generic housing unit is made EP 2 397 777 A1 known.
  • This housing unit is provided for connection to a terminal pair of a plate heat exchanger in such a way that in the assembled state, the housing unit is arranged in front of the plate heat exchanger.
  • Such an arrangement has the advantage that it has a comparatively small width, but builds relatively large in depth.
  • a disadvantage of this design is also that the plate heat exchanger is accessible only after disassembly of the housing unit, which When replacing the plate heat exchanger leads to high labor costs in the repair.
  • the invention has the object, a generic housing unit in such a way that on the one hand a compact design with a small number of individual casings is achieved, on the other hand, the plate heat exchanger is as easy as possible interchangeable.
  • the housing unit according to the invention for a heater with two heating circuits, one for space heating and one for domestic water heating, has a pump housing, which has a chamber on the suction side, open into the two return lines, which can be shut off alternately by means of a switching member arranged opposite the suction side of the pump are.
  • the return lines are arranged in the region of their passage through the chamber wall at an angle ⁇ between 60 ° and 120 ° to each other, ie the return lines are approximately perpendicular to each other, so that the one return line, in particular the heating circuit for space heating at the bottom can lead, whereas the other return line opens laterally.
  • the embodiment of the invention has the further advantage that a very compact housing unit is achievable, which allows the construction of a heater with only a small depth.
  • the basic idea of the present invention is to design the housing unit in such a way that the return lines in the region of their passage through the chamber wall enclose an angle between 60 ° and 120 °, that is, they are advantageously approximately perpendicular to one another. Then the return line, which is typically brought from below to the heating bath, can connect the space heating to the housing unit in a quasi-direct way.
  • a lateral arrangement is possible, which allows an arrangement immediately adjacent to a plate heat exchanger, the connection to the plate heat exchanger either through the housing unit itself or advantageous can be done via an intermediate housing.
  • the connection is expediently carried out in installation eye from the rear, in order to remove the plate heat exchanger without disassembly of the housing unit or any intermediate housing forward in case of repair.
  • the angle ⁇ is preferably oriented around the axis of rotation of the pump impeller.
  • the suction-side chamber, in which the return lines open, also has a switching element, with which the return lines are alternately blocked, so that the space formed in the suction chamber can be used as a valve housing and on the other within this space a flow calming and air separation take place can, so that advantageously this chamber also forms part of an air separator, for example, when near the installation position in the upper side a vent valve is arranged with access to the environment.
  • the free ends of the pipe sections which open out into the chamber are advantageously designed to one another in such a way that the annular end faces lie opposite one another at the pipe section ends, preferably being arranged in parallel.
  • a parallel arrangement has the advantage that the formation of the intermediate switching element can also be done in parallel.
  • the switching element may also be formed with wedge-shaped sealing surfaces which are at an angle to one another. It is understood that the beveling of the pipe section ends then takes place in accordance with each other, so that with the switching element depending on the position either the one pipe end or the other end of pipe sections can be closed.
  • connections for the return lines can advantageously be provided directly on the pump housing, in particular the chamber, wherein expediently the connection for the return line of the heating circuit for space heating in installation position below and the connection for the return line of the heating circuit for domestic water heating in installation position is arranged laterally on the pump housing ,
  • the installation position is always defined by the arrangement of the air separator, which is arranged with its vent valve in the upper region of the chamber, in particular in breather pumps.
  • the chamber forms part of an air separator.
  • the arrangement of an air separator in the suction-side region of the pump, in particular as part of the chamber is particularly advantageous, but an air separator can also be provided elsewhere, optionally also outside the housing unit.
  • the switching element on a lever one end of which is provided with a sealing body which is arranged with clearance between the pipe ends, wherein the lever is pivotally mounted in a wall portion delimiting the chamber and its other end with a control drive connected is.
  • a sealing body may be provided at the end of the lever, which alternately seals the front ends of the pipe sections with two sides arranged at approximately 180 ° to one another.
  • the control drive is located outside of the liquid-carrying part of the pump housing and is accessible from the outside so that it is interchangeable without removing the lever.
  • the control drive on the side of the pump housing, which is opposite to the drive motor turned away.
  • the drive motor on the one hand and the control drive are always arranged at two sides typically facing away from each other by 180 °, the control drive and the motor thus enclose the intermediate housing unit.
  • the control drive in installation position on the back of the pump housing, since it is space saving accommodated here, on the other hand so far accessible that it is interchangeable without removing the housing unit in the back, if what is typically the case, to a Side, for example, enough space to the top to access behind the housing unit can.
  • the pump housing seen in the axial direction of the impeller has a substantially rectangular outer contour, as is typically the case when the pump head having the motor is fixed to the pump housing with four screws, so that from the per se circular shape forms a square contour, then It is particularly advantageous to arrange diagonally the lever with respect to the rectangular outer contour, since over the diagonal of the lever may have a greater length than in another arrangement, without projecting beyond the outer contour of the housing.
  • connection piece is provided on the rear side of the pump housing, which serves for the integration of the lever in the pump housing and in which the lever can be used together with the wall portion in which it is mounted.
  • Such connecting pieces for exchangeable attachment of the switching element are state of the art and are in EP 2 397 777 A1 described and illustrated in detail.
  • the housing unit according to the invention is designed and arranged so that it next to the narrow side of the plate heat exchanger sits and with this via the return line for the service water to be heated and also mechanically connected, wherein advantageously an intermediate housing is provided, which mechanically and line connects the housing unit with the plate heat exchanger.
  • This intermediate housing can also form part of the housing unit.
  • the housing unit is designed so that the pump housing is projected in its in the axial direction of the impeller seen rectangular outer contour of the mounting position in the upper side by a pressure port on the one hand and the vent valve on the other.
  • the vent valve should be located on the one hand as possible at the highest point of the pump, on the other hand, the discharge nozzle leads to a line which leads upwards in the heater to a primary heat exchanger in which the water of the primary heating by means of a burner becomes.
  • the free space lying in the contour region between them can be used for the arrangement of the control drive for the switching element.
  • Such an arrangement has the advantage that the control drive is arranged on the one hand on a usually accessible location, on the other hand in a room that is not otherwise usable anyway.
  • the housing unit within the pump housing on a channel which connects the return line of the heating circuit for domestic water heating with the interposition of a bypass valve with the chamber. Additionally or alternatively, this channel can connect the return line of the heating circuit for domestic water heating with the interposition of a pressure relief valve with the environment.
  • the bypass connection between the return line and the chamber is formed, which ensures that when the heating circuit is closed for the space heating a circulation system is maintained and on the other hand, via the pressure relief valve creates a connection to the environment, which ensures that when a predetermined pressure is exceeded, a pressure relief via this valve in the outside environment can be done without the risk that components within the System burst due to an inadmissibly high pressure rise or fail in any other way.
  • a channel is advantageously formed by molding into the chamber wall, wherein the indentation is advantageously arranged so that it is arranged parallel to a recess for receiving the vent valve, so that it can be formed in the same way with drawing cores inside. In this case, the indentation is guided into the pipe section, which adjoins the return line for the hot water to be heated, ie in the area upstream of the switching element in the flow direction.
  • the line connection between the channel and the chamber may be formed in a simple manner by an opening in the wall of the indentation. It is not important to optimize the flow, as the bypass line is not needed in normal operation.
  • the bypass valve is advantageously incorporated into the indentation, d. H. that the opening is closed by the bypass valve and released only after opening the bypass valve.
  • the pressure relief valve is advantageously incorporated into the indentation, suitably introduced into the manner of a cartridge in this, so that at the free end of the indentation only a handle for test operation and a preferably in installation position directed backward outlet protrude.
  • the housing unit according to the invention is integrally formed as a plastic injection molded part, so as to cost in large-scale production as a receptacle for the aforementioned and also optionally to serve other components of the heater and at the same time to form the necessary connection lines.
  • Fig. 1 shown heating system has two heating circuits, one for space heating and one for domestic water heating.
  • the system consists of the actual heater, which can be designed as a wall-mounted gas heater or as a floor mounted heater.
  • the device side part is in Fig. 1 formed by the part of the heating system shown above the broken line 0, the rest of the building-side part through the underlying.
  • the heater has four water supply connections exiting the bottom of the unit, namely a heating supply connection 1, a heating return connection 2, a cold water connection 3 and a hot water connection 4.
  • the other connections gas, electric
  • This heater thus serves on the one hand to supply heat exchangers 5, for example in the form of radiators for space heating and for heating domestic hot water.
  • a Plattenwörmeleyer 6 is provided within the heater, via which the coming of the cold water connection 3 cold service water is heated and directed to the hot water connection 4.
  • the heating takes place by means of a warm water generated in the heater in a primary heat exchanger 7, for example by combustion of gas, which is conducted in the counterflow through the plate heat exchanger 6.
  • the heat transfer medium typically water
  • This circulating pump 8 conveys the heat transfer medium via a pressure line 9 to the primary heat exchanger 7, where this is heated and fed either via a line 10 to the plate heat exchanger 6 or via a line 11 to the heating flow connection 1 and from there to the heat exchangers 5 of the space heater.
  • the emerging from the heat exchangers 5 and 6 medium is fed via a return line 12, which leads the water coming from the heat exchanger 5, and via a return line 13, which leads the water coming from the heat exchanger 6, a changeover valve 14, which depending on the switching position either Return line 12 or the return line 13 to the suction side of the pump 8 connects.
  • the switching valve 14 is controlled by means of an electric motor 15 such that in operation, the return line 12 is connected to the pump 8. If warm water is to be removed at the hot water tap, this is detected by means of a flow sensor 16 and the valve 14 is actuated by switching by means of the electromotive control drive 15, so that the return line 13 is connected to the suction side of the pump 8.
  • the heater on a bypass line 17, which ensures that even when closing both heating circuits circulation within the heater is possible.
  • a pressure relief valve 18 is incorporated as a bypass valve in the bypass line 17, which opens from a preset differential pressure.
  • the heater has other components, of which only an example here, a surge tank 19, a safety valve 20 and a vent valve 21 are shown.
  • a housing unit 22 is provided which is formed as a one-piece plastic injection molded part.
  • housing unit 22 is, in particular the Fig. 2 and 3 it can be seen, provided for arrangement in addition to the plate heat exchanger 6, which is arranged wall-mounted in installation position and is arranged with the housing unit 22 at the bottom 23 of the device housing, such that the terminals 1 - 4 can be occupied by the underside of the device housing.
  • the plate heat exchanger 6 is arranged in the illustrated embodiment so that it can be removed after loosening two screws without disassembly of the housing unit 22 or intermediate housings 24 and 25, which connect to the heat exchanger 6, forward, which makes the device very easy to maintain makes, especially in calcareous water premature failure of the plate heat exchanger 6 can not be excluded.
  • the housing unit 22 comprises, on the one hand, a pump housing 26, which is formed on the side facing the installation side for connecting an electric motor 27, on the shaft of which a rotary wheel is seated which is rotatably arranged in the pump housing 26, which is a volute, and there Promotes heat transfer medium from the suction port of a in installation position upwardly outgoing pressure port 28 into the conduit 9.
  • the pump housing Suction side, d. H. in installation position behind the space for the impeller, the pump housing has a chamber 29 which is cup-shaped and in installation position at the bottom has a connection for the return line 12 of the space heater, which is formed there as a heater return port 2.
  • the chamber 29 laterally, in the installed position on the left side to the plate heat exchanger 6 towards a port 30 which connects to the intermediate housing 24 and receives the return line 13 from the plate heat exchanger 6.
  • a port 30 which connects to the intermediate housing 24 and receives the return line 13 from the plate heat exchanger 6.
  • openings in the radial chamber wall 29 are provided, which are surrounded and continued in the interior of the chamber 29 by pipe sections 31 and 32, which lead these line connections in the interior of the chamber 29.
  • the openings in the radial chamber wall for the terminals 2 and 30 are arranged in the present embodiment at an angle ⁇ of 90 ° to each other, wherein the lateral connection 30 is arranged offset in the radial chamber wall a piece down.
  • the pipe sections 31 and 32 are chamfered at their free ends, so that their annular end faces 33 facing each other and are arranged parallel to each other, as is apparent from Fig. 5 is apparent.
  • the pipe sections 31 and 32 can be closed alternately by means of a switching element which consists of a lever 34, which is guided pivotably through the chamber wall and at the inner end of a sealing body 35 is arranged, which closes or releases depending on the lever position, the free end of the pipe section 31 or the free end of the pipe section 32.
  • the lever end located outside the chamber 29 is connected to the control drive 15, which is arranged perpendicular to the lever 34.
  • the longitudinal axis of the lever 34 includes in the installed position with the horizontal or the bottom of the pump housing 26 at an angle of 45 °, ie the lever 34 is relative to the in the axial direction (50) of the impeller axis seen substantially square pump housing 26 arranged diagonally and that For this purpose, a corresponding terminal 36 is formed on the back, in which the lever 34 with a wall portion 37, in which it is pivotally mounted, is incorporated like a cartridge.
  • the control drive 15, which is arranged perpendicular to the pump housing 26 extends beyond the top and is located in the axial direction 50 of the impeller between the discharge nozzle 28 and an air separator 38 with vent valve 21 and the underlying safety valve 20.
  • the safety valve 20 is like a cartridge an indentation 40 is incorporated in the chamber wall, which ends open into the pipe section 31, which forms the return line from the plate heat exchanger 6 and which is connected via a recess 41 in the wall of the indentation 40 with the interior of the chamber 29.
  • a pressure limiting valve 18 is incorporated as a bypass valve on the tube side, this is followed by the safety valve 20, which connects the interior of the chamber 29 with the environment when exceeding a predetermined pressure on the recess 41.
  • the chamber 29 not only includes the switching valve 14 but also serves for air separation in the area in front of the suction mouth and is provided at the top with the air separator 38, which includes the Heilabscheideventil 21.
  • the intermediate case 24 connects to a pair of the line terminals of the plate heat exchanger 6 whose other pair is connected through the intermediate case 25.
  • Fig. 5 illustrates the intermediate housing 24 connects the terminal 30 of the housing unit 22 with the lower terminal of the right in the installed position rear terminal pair of the plate heat exchanger 6.
  • the upper terminal 6 is led out to a line connection.
  • the intermediate housing 25 connects to the other rear terminal pair of the plate heat exchanger 6 and leads to the heating flow connection 1 and the hot water connection 4 at the bottom 23 of the heater.
  • the space used above such as front, rear, top, bottom and side always refer to an arrangement in which the heater, for example, wall-mounted, the bottom 23 of the heater is arranged horizontally and the internals extend from there upwards.
  • the view is always with the front housing wall open, as is customary in heating baths, wherein the rear wall of the housing is arranged on the wall on which the device is mounted.

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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)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP12156038.7A 2012-02-17 2012-02-17 Unité de boîtier pour un appareil de chauffage Active EP2629019B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
PL12156038.7T PL2629019T3 (pl) 2012-02-17 2012-02-17 Jednostka obudowy dla przyrządu grzejnego
EP12156038.7A EP2629019B1 (fr) 2012-02-17 2012-02-17 Unité de boîtier pour un appareil de chauffage
CN201380009806.0A CN104114952B (zh) 2012-02-17 2013-01-17 用于加热器的壳体单元
PCT/EP2013/050859 WO2013120649A1 (fr) 2012-02-17 2013-01-17 Unité de logement pour un appareil de chauffage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP12156038.7A EP2629019B1 (fr) 2012-02-17 2012-02-17 Unité de boîtier pour un appareil de chauffage

Publications (2)

Publication Number Publication Date
EP2629019A1 true EP2629019A1 (fr) 2013-08-21
EP2629019B1 EP2629019B1 (fr) 2016-04-13

Family

ID=47559526

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12156038.7A Active EP2629019B1 (fr) 2012-02-17 2012-02-17 Unité de boîtier pour un appareil de chauffage

Country Status (4)

Country Link
EP (1) EP2629019B1 (fr)
CN (1) CN104114952B (fr)
PL (1) PL2629019T3 (fr)
WO (1) WO2013120649A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3012553A1 (fr) * 2014-10-21 2016-04-27 Grundfos Holding A/S Composant pour une installation de chauffage

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19912284A1 (de) * 1999-03-18 2000-09-28 Grundfos A S Bjerringbro Kompaktheizungsanlage
EP1528330A1 (fr) * 2003-11-03 2005-05-04 Grundfos A/S Ensemble pour installation de chauffage compact
EP1884717A1 (fr) * 2006-07-28 2008-02-06 Grundfos Management A/S Appareil de chauffage
EP2148149A2 (fr) * 2008-07-21 2010-01-27 O.T.M.A. S.N.C. di Spaggiari & C. Ensemble de vanne hydraulique pour chaudières à montage mural
EP2397777A1 (fr) 2010-06-19 2011-12-21 Grundfos Management A/S Unité de boîtier pour une installation de chauffage

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1418387B1 (fr) * 2002-11-08 2016-01-13 Grundfos A/S Installation de chauffage compacte avec deux circuits de chauffage
CN201233054Y (zh) * 2008-06-17 2009-05-06 广东万家乐燃气具有限公司 一种多功能壁挂炉预热供水系统

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19912284A1 (de) * 1999-03-18 2000-09-28 Grundfos A S Bjerringbro Kompaktheizungsanlage
EP1528330A1 (fr) * 2003-11-03 2005-05-04 Grundfos A/S Ensemble pour installation de chauffage compact
EP1884717A1 (fr) * 2006-07-28 2008-02-06 Grundfos Management A/S Appareil de chauffage
EP2148149A2 (fr) * 2008-07-21 2010-01-27 O.T.M.A. S.N.C. di Spaggiari & C. Ensemble de vanne hydraulique pour chaudières à montage mural
EP2397777A1 (fr) 2010-06-19 2011-12-21 Grundfos Management A/S Unité de boîtier pour une installation de chauffage

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3012553A1 (fr) * 2014-10-21 2016-04-27 Grundfos Holding A/S Composant pour une installation de chauffage

Also Published As

Publication number Publication date
EP2629019B1 (fr) 2016-04-13
CN104114952B (zh) 2017-03-15
WO2013120649A1 (fr) 2013-08-22
PL2629019T3 (pl) 2016-12-30
CN104114952A (zh) 2014-10-22

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