EP1884717A1 - Appareil de chauffage - Google Patents

Appareil de chauffage Download PDF

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Publication number
EP1884717A1
EP1884717A1 EP06015790A EP06015790A EP1884717A1 EP 1884717 A1 EP1884717 A1 EP 1884717A1 EP 06015790 A EP06015790 A EP 06015790A EP 06015790 A EP06015790 A EP 06015790A EP 1884717 A1 EP1884717 A1 EP 1884717A1
Authority
EP
European Patent Office
Prior art keywords
heating
valve
heat exchanger
installation according
switching
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
EP06015790A
Other languages
German (de)
English (en)
Other versions
EP1884717B1 (fr
Inventor
Olav 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 Management AS
Original Assignee
Grundfos Management 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 Management AS filed Critical Grundfos Management AS
Priority to EP06015790.6A priority Critical patent/EP1884717B1/fr
Publication of EP1884717A1 publication Critical patent/EP1884717A1/fr
Application granted granted Critical
Publication of EP1884717B1 publication Critical patent/EP1884717B1/fr
Not-in-force 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
    • 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
    • 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
    • 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 heating system, in particular a gas boiler with two heating circuits according to the features specified in the preamble of claim 1.
  • Such heating systems are typically compact systems, so-called gas water heaters, which all aggregates and facilities for supplying the radiator for space heating on the one hand and to provide hot service water on the other hand.
  • gas water heaters which all aggregates and facilities for supplying the radiator for space heating on the one hand and to provide hot service water on the other hand.
  • These are typically provided for wall mounting devices that have a unit in the lower part, which includes the majority of device-side wiring, in particular a circulation pump and a switching valve, the required for the operation of the device sensor and control electronics and ancillaries such as air , Dirt separator and the like.
  • Such units are state of the art, it is in this context EP 1 528 330 A1 directed.
  • the space above the unit is typically provided for the gas burner and the primary heat exchanger located above it.
  • the primary heat exchanger In space heating operation, the primary heat exchanger is usually connected directly to the radiators for space heating. However, as soon as hot domestic water is requested, the connection between the primary heat exchanger and the radiators for space heating is separated by means of a switching valve and the heated liquid stream coming from the primary heat exchanger is directed into a secondary heat exchanger, typically a plate heat exchanger It is flowed through in countercurrent with hot water and this heated. Once hot tap water is requested by opening a tap, the switching valve is moved in the heating system in the prescribed switching position and beyond ignited the burner to supply the heating circuit with the required energy in the form of heat.
  • the disadvantage here is that especially in the summer, when no heat is needed for the space heating, it takes a relatively long time after opening the tapping point for hot water until heated hot water gets there.
  • the invention has the object, a generic heating system in such a way that the aforementioned problems are reduced, in particular an even faster Heating of the service water can be done after opening the tap.
  • the heating system according to the invention in particular gas boiler has two heating circuits, one for hot water and one for space heating.
  • the heat transfer medium for both heating circuits is heated in a common primary heat exchanger and fed to the heating circuits by means of a circulation pump.
  • a switching valve which is a first switching position the primary heat exchanger in the first heating circuit and in a second switching position the primary heat exchanger incorporated into the second heating circuit.
  • a third switching position is provided, in which a line connection to both heating circuits is shut off.
  • This third switch position is provided for the system state, if neither heat in the heating circuit for space heating nor in the heating circuit for domestic water heating heat is required and removed, so typically with switched off space heating after closing the tap for heated hot water. This ensures that the secondary heat exchanger, in which the service water is heated, then, when the service water flow is turned off due to the closed dispensing valve, not further charged with hot water.
  • This arrangement also has the advantage that at least some time still hot water is present directly in front of the secondary heat exchanger, so that faster heated hot water is available when reopening the tap.
  • the basic idea of the present invention is therefore not to design the switching valve as in the prior art as a 3/2-way valve, but also to provide a further switching position in which the line connection between the primary heat exchanger and the two heating circuits is interrupted.
  • the circulating pump can be controlled after installation in the heating system so that it runs in the interrupted by the closed valve position without circulation.
  • the thereby absorbed by the pump power is determined and used during later operation of the system to determine without a flow meter alone due to the electrical data of the pump driving motor, whether a promotion is or not.
  • the pump can thus be calibrated automatically at this point with appropriate training of the control electronics.
  • bypass line not only the line connection to both heating circuits is shut off in this third switching position, but also a bypass line connected in parallel to the primary heat exchanger through which the coming of the primary heat exchanger heat transfer the primary heat exchanger is supplied again when the line connection to the heating circuits is locked.
  • This bypass line not only has the advantage that, despite blocked heating circuits, a further circulation of the heat carrier and thus a homogenization of the heat level within the primary circuit, but can also be used to ensure that hot water is always present, even if neither the room heating on heated service water is tapped.
  • a spring-loaded valve preferably a check valve is arranged in the bypass line, which is dimensioned and arranged so that when the line connection is shut off to both heating circuits, automatically opens by the pressure generated by the circulation pump and thus releases the bypass line for the flow ,
  • This check valve ensures that in normal heating operation no hydraulic short circuit is created by the bypass line or the line connection for the bypass line in the switching position in which it is shut off, is depressurized.
  • the construction of the switching valve can be simplified by this arrangement, since the switching valve can then be designed as a simple 3/3-way valve and must not be designed as a 4/3-way valve.
  • the check valve is opened automatically and thus released the bypass line.
  • the switching valve is advantageously designed as a 3/3-way valve, but it can also be a 4/3-way valve are used, then the bypass line connects to the fourth valve port and is released in the switching position when the two heating circuits are shut off.
  • the switching valve is designed as a seat valve, wherein two valve seats and associated closing body can be provided for a 3/3-way valve, which are preferably spring-loaded in the closing direction.
  • a design is on the one hand structurally simple, on the other hand robust, less susceptible to faults in contaminants and also has the advantage that, with a suitable structural design, the valve at overpressure both on the one hand and on the other Heating circuit can open automatically.
  • the closing bodies are arranged so that they close against the intended flow direction of the heat carrier.
  • An advantageous embodiment of the switching valve is obtained when the closing body are movably arranged on a common shift rod and the shift rod has drivers which take the respective shooting body only in the opening direction. The closing of the valves then takes place automatically, so that only a comparatively simple mechanism has to be provided for opening.
  • valve seats are arranged so that they are facing away from each other and aligned with each other, then a straight common control rod can be used.
  • the shift rod is advantageously arranged coaxially to the valve seats and guided linearly movable.
  • a particularly simple, but at the same time functional design results when the shift rod is flared at both ends, wherein there is a helical compression spring between the inside expansion and the adjacent closing body, which force acts on the closing body in the direction of the adjacent driver.
  • the shift rod can then advantageously form the guide for the closing body, which can be designed as a simple and inexpensive to produce disc, which comes to rest on a corresponding annular surface.
  • the switching valve is designed in the manner of a cartridge, so that it can be inserted as a fully assembled component in a substantially cylindrical open at one end and lockable by a lid mounting space to which all of the switching valve connect the following lines and the bypass line.
  • installation spaces can be structurally simple in housing parts are provided, from which units are constructed, which include all the essential units of the heating system, ancillaries and piping.
  • Such units are typically formed of a plurality of plastic injection molded parts, the cheaper they are to produce, the less lost cores are required.
  • bypass line is connected in the region between the valve seats of the switching valve to the installation space, so that in connection with the check valve quasi the function 4/3-way valve is achieved without having the otherwise necessary design effort.
  • the bypass line can then advantageously be formed by a connection piece of such a housing component formed from plastic, wherein the check valve is advantageously used in this connection piece from the free end.
  • the connecting piece is expediently arranged and aligned such that it opens directly into the pump housing part which is typically provided in such units, specifically in the region of the suction mouth of the circulating pump, which is regularly designed to be cost-effective as a centrifugal pump.
  • the embodiment according to the invention in particular the provision of a switching position of the valve in which the line connection to both Heating circuits is shut off, in conjunction with the bypass line with check valve (non-return valve) can be advantageously integrated within a structural unit, which is typically present in such heating systems and is constructed of housing and valve components made of plastic injection and absorbs all essential piping, aggregates and ancillaries, so as this is also described by way of example below.
  • 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 circulating 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 of a bypass line 5 or a heat exchanger 6 in the form of a plate heat exchanger or radiators 7 of a space heater.
  • a bypass line 5 a return to the circulating pump 3 and thus to the primary heat exchanger 1 takes place in a short path.
  • the water heated in the primary heat exchanger 1 is the plate heat exchanger 6 supplied, 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 water in the primary heat exchanger 1 is supplied to the radiators 7 of the space heater and then via a return line 11 again 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 member 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 domestic hot water heating, flows into the upper left connection 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.
  • the housing components 20, 22 and 23 have in installation position accessible from the front, by means of a bayonetable lid 32 completed cylindrical housings, which contain valves and the like.
  • a bayonetable lid 32 completed cylindrical housings, which contain valves and the like.
  • the 3/3-way valve 4 is incorporated, which is removable after removal of the lid 32 in the manner of a cartridge assembly.
  • the housing member 20 has, as best seen in FIG. 3, the lower port 27 for the heating flow on, from this connection so flows that intended for the radiator 7 of the space heating warm water. It also has a connection 33 extending through a transverse channel to the installation space in the installation position to the rear of the plate heat exchanger 6, through which the hot water coming from the primary heat exchanger 1 via the connection 31 into the housing component 20 is fed to the plate heat exchanger 6 in the switching position provided for the service water heating is through which flows in countercurrent to be heated hot water. Furthermore, the bypass line 5 connects to the installation space parallel to the cross channel leading to the connection 33, the connecting branch 34 of which opens out into the pump housing part 13 is widened and receives a check valve 35 there.
  • the housing component 20 has a mounting connection 36 extending between the connection 31 and the connecting piece 34, which accommodates a drive unit 37, via which a control lever 38, which is sealingly guided through the cylinder wall of the installation space, moves about the pivot axis 39 in its pivoting position becomes.
  • the remote from the drive unit 37 end of the control lever 38 is fork-shaped and laterally engages over a shift rod 40 which is thickened in this area to a driver 41, the fork 42 engages positively such that during pivoting movements of the control lever 38, the shift rod 40 in Axial direction is moved.
  • the shift rod 40 which is guided axially movable within the installation space, has at a distance to both sides of the driver 41 two further drivers 43, on which closure members 44 are supported in the form of annular discs and which are arranged movable in the axial direction on the shift rod 40 ,
  • the free ends of the shift rod 40 extend beyond the driver 43 and are guided on the housing side. They are surrounded by helical compression springs 45, which are supported on one side of the housing and the other side on the closing body 44 and push it in the direction of the driver 43.
  • closure members 44 are sealed to the shift rod 40 and cooperate with valve seats 46 arranged on the housing side, which are arranged at a distance from each other in the opposite direction, as shown in detail with reference to FIG. 4.
  • both closing bodies 44 are acted upon by the force of the springs 45 sealingly against the valve seats 46 and thus block the line connection between the terminal 31, ie the line coming from the primary heat exchanger 1 both to the terminal 27, ie to the Radiators 7 of the space heating and the connection 33 of the plate heat exchanger 6 for heating the service water.
  • the closing body 44 can function in conjunction with the valve seats 46 with suitable dimensioning of the springs 45 as a pressure relief valve, so that in case of failure of the check valve 35 ensures that the valves open automatically due to the pressure generated by the circulation pump 3 and the from Primary heat exchanger 1 heated water can be dissipated in the heating system.
  • the control of the closing body 44 is effected by means of the drive unit 37, which pivots the control lever 38 about the axis 39 depending on the control, whereby the shift rod 40 is guided in Fig. 4 either to the right or to the left.
  • the shift rod 40 is moved to the left in Fig. 4, the left in the Fig. 44 closing body 44 is lifted from the valve seat 46 and thus the line connection to port 27 for the heating flow released, the other closing body 44 remains unchanged in its closed position.
  • the shift rod 40 is moved in the opposite direction, the left-hand closing body 44 in FIG.
  • valve seats 46 with the closing bodies 44, the shift rod 40 with the drivers and their leadership are formed in a cartridge so that after disengaging the fork 42 of the control lever 38 from the driver 43 and removing the lid 32, the entire unit can be pulled out of the installation space , z. B. for maintenance or repair purposes.

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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)
  • Water Supply & Treatment (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
EP06015790.6A 2006-07-28 2006-07-28 Appareil de chauffage Not-in-force EP1884717B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06015790.6A EP1884717B1 (fr) 2006-07-28 2006-07-28 Appareil de chauffage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06015790.6A EP1884717B1 (fr) 2006-07-28 2006-07-28 Appareil de chauffage

Publications (2)

Publication Number Publication Date
EP1884717A1 true EP1884717A1 (fr) 2008-02-06
EP1884717B1 EP1884717B1 (fr) 2016-01-13

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EP06015790.6A Not-in-force EP1884717B1 (fr) 2006-07-28 2006-07-28 Appareil de chauffage

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EP (1) EP1884717B1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110308767A1 (en) * 2010-06-19 2011-12-22 Grundfos Management A/S Housing unit for a heating system
EP2629019A1 (fr) * 2012-02-17 2013-08-21 Grundfos Holding A/S Unité de boîtier pour un appareil de chauffage
CN104040261A (zh) * 2012-01-09 2014-09-10 格兰富控股联合股份公司 供热装置
EP3222929A4 (fr) * 2014-11-19 2018-08-08 Kyungdong Navien Co., Ltd. Chaudière ayant un clapet de retenue intégré à une conduite d'eau
CN109026668A (zh) * 2018-09-21 2018-12-18 合肥新沪屏蔽泵有限公司 用于供热设备的一种泵壳体

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0825387A2 (fr) * 1996-08-13 1998-02-25 WILO GmbH Unité hydraulique pour une installation combinée d'eau de chauffage et d'eau chaude sanitaire
EP0931988A2 (fr) * 1998-01-22 1999-07-28 Wolf GmbH Méthode et installation pour réduire le temps d'attente pour le tirage d'eau chaude
EP1367306A1 (fr) * 2002-05-31 2003-12-03 Grundfos a/s Cartouche de soupape
EP1528330A1 (fr) * 2003-11-03 2005-05-04 Grundfos A/S Ensemble pour installation de chauffage compact
EP1653132A1 (fr) * 2004-11-02 2006-05-03 Siemens Aktiengesellschaft Soupape à trois voies
EP1655527A1 (fr) * 2004-11-05 2006-05-10 Grundfos a/s Soupape pour une installation compacte de chauffage

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0825387A2 (fr) * 1996-08-13 1998-02-25 WILO GmbH Unité hydraulique pour une installation combinée d'eau de chauffage et d'eau chaude sanitaire
EP0931988A2 (fr) * 1998-01-22 1999-07-28 Wolf GmbH Méthode et installation pour réduire le temps d'attente pour le tirage d'eau chaude
EP1367306A1 (fr) * 2002-05-31 2003-12-03 Grundfos a/s Cartouche de soupape
EP1528330A1 (fr) * 2003-11-03 2005-05-04 Grundfos A/S Ensemble pour installation de chauffage compact
EP1653132A1 (fr) * 2004-11-02 2006-05-03 Siemens Aktiengesellschaft Soupape à trois voies
EP1655527A1 (fr) * 2004-11-05 2006-05-10 Grundfos a/s Soupape pour une installation compacte de chauffage

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN104040261A (zh) * 2012-01-09 2014-09-10 格兰富控股联合股份公司 供热装置
CN104040261B (zh) * 2012-01-09 2018-03-02 格兰富控股联合股份公司 供热装置
US10012395B2 (en) 2012-01-09 2018-07-03 Grundfos Holding A/S Heating unit
EP2629019A1 (fr) * 2012-02-17 2013-08-21 Grundfos Holding A/S Unité de boîtier pour un appareil de chauffage
WO2013120649A1 (fr) * 2012-02-17 2013-08-22 Grundfos Holding A/S Unité de logement pour un appareil de chauffage
CN104114952B (zh) * 2012-02-17 2017-03-15 格兰富控股联合股份公司 用于加热器的壳体单元
EP3222929A4 (fr) * 2014-11-19 2018-08-08 Kyungdong Navien Co., Ltd. Chaudière ayant un clapet de retenue intégré à une conduite d'eau
CN109026668A (zh) * 2018-09-21 2018-12-18 合肥新沪屏蔽泵有限公司 用于供热设备的一种泵壳体
CN109026668B (zh) * 2018-09-21 2024-05-10 合肥新沪屏蔽泵有限公司 用于供热设备的一种泵壳体

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