EP3581859A1 - Cellule chauffante d'un appareil chauffant - Google Patents

Cellule chauffante d'un appareil chauffant Download PDF

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Publication number
EP3581859A1
EP3581859A1 EP19167477.9A EP19167477A EP3581859A1 EP 3581859 A1 EP3581859 A1 EP 3581859A1 EP 19167477 A EP19167477 A EP 19167477A EP 3581859 A1 EP3581859 A1 EP 3581859A1
Authority
EP
European Patent Office
Prior art keywords
burner
fuel gas
control pressure
pressure line
door
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
EP19167477.9A
Other languages
German (de)
English (en)
Other versions
EP3581859B1 (fr
Inventor
Didier Bodet
Patrice Richard
David Chauvin
Nicolas Bellevert
Etienne Etienne Sinsoulier
Karim Somaia
Rémi Claisse
Henri Lami
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.)
Vaillant GmbH
Original Assignee
Vaillant GmbH
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 Vaillant GmbH filed Critical Vaillant GmbH
Publication of EP3581859A1 publication Critical patent/EP3581859A1/fr
Application granted granted Critical
Publication of EP3581859B1 publication Critical patent/EP3581859B1/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
    • F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/40—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes
    • F24H1/43—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes helically or spirally coiled
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/60—Devices for simultaneous control of gas and combustion air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/72—Safety devices, e.g. operative in case of failure of gas supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M7/00—Doors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/02—Regulating fuel supply conjointly with air 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
    • F24H9/00—Details
    • F24H9/20—Arrangement or mounting of control or safety devices
    • F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
    • F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
    • F24H9/2042—Preventing or detecting the return of combustion gases
    • F24H9/205—Closing the energy 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
    • F24H15/00—Control of fluid heaters
    • F24H15/10—Control of fluid heaters characterised by the purpose of the control
    • F24H15/104—Inspection; Diagnosis; Trial operation
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/395—Information to users, e.g. alarms

Definitions

  • the invention relates to a device and a method for detecting a leak in a heat cell of a heating device with a fuel-operated burner and a combustion chamber sealed from the environment.
  • the object of the invention is to provide protection against unintentional exhaust gas leakage from combustion chambers with a fuel-operated burner.
  • This object is achieved according to the invention in that, in the case of a heat cell with a fuel-operated burner and a housing with an opening which can be closed by a removable burner door, a between the housing and the burner door Control pressure line for the fuel gas metering is arranged. In the event of malfunctions, the control pressure drops, the burner receives no fuel gas as a result and the system switches off.
  • control pressure line runs on the outer edge of the burner door, this ensures that the pressure in the control pressure line drops to ambient pressure in the event of a fault.
  • the control pressure line should at least run almost completely around the burner door so that an exit is also detected at every faulty point.
  • the line on the burner door should run at the top. Suitable materials are those with a melting point below 300 ° C, preferably plastic.
  • a temperature-resistant seal should be placed closer to the burner than the control pressure line; in the proper case, this protects the control pressure line.
  • the transition from the housing to the burner door can optionally also be sealed only by the control pressure line.
  • FIG 1 shows a heat cell 8 with a housing 10 with an opening which can be closed by a removable burner door 4.
  • a burner 1 projects into the interior of the heat cell 8, the burner 1 being connected to a blower 2 via a fuel gas / air supply 3 is.
  • a control pressure line 14 branches from the fuel gas-air supply 3 to a fuel gas metering device 15 in the form of a gas fitting, which supplies fuel gas to the fuel gas-air supply 3 via a fuel gas line 17 as a function of the pressure in the control pressure line 14.
  • the fuel gas flows into a venturi 16 within the fuel gas / air supply 3.
  • a graphite seal 7 is located between the housing 10 and the burner door 4.
  • the fan 2 When operating the heat cell 8, the fan 2 runs at a predetermined speed. Depending on this speed, a certain pressure is established in the control pressure line 14. In a gas fitting 15, this pressure serves as a manipulated variable for metering in fuel gas which is supplied to the fuel gas / air supply 3 via the fuel gas line 17. The fuel gas-air mixture is burned on the outer surface of the burner 1. The exhaust gases are cooled in a heat exchanger and discharged into the environment.
  • FIGS. 2 and 3 show a heat cell 8 according to the invention, which differs from the Figure 1 differs in that the control pressure line 14 does not run the shortest route to the fuel gas metering device 15, but instead runs additionally between the housing 10 and the burner door 4.
  • the heat cell 8 also has a fuel-operated burner 1. This is supplied with fuel gas by a fuel gas metering device 15 as a function of the pressure in a control pressure line 14.
  • a heat exchanger 9 is used to transfer thermal energy of the exhaust gases of the burner 1 to a heat sink.
  • the burner 1 and the heat exchanger are accommodated in a housing 10 with an opening.
  • the opening of the housing 10 can be closed by a removable burner door 4.
  • a fuel gas-air supply 3 is connected for supplying a fuel gas-air mixture.
  • a temperature-resistant graphite seal 7 is arranged between the housing 10 and the burner door 4.
  • the control pressure line 14 extends around the graphite seal 7 on the outer edge of the burner door 4, the control pressure line 14 being radially adjacent to the surroundings.
  • the control pressure line 14 is made of silicone.
  • the hot exhaust gas from the flame 12 of the burner 1 can flow past it and the control pressure line 14 is acted upon radially at the leakage point by hot exhaust gases.
  • the control pressure line 14 initially seals off the exhaust gases before they exit into the environment. However, if the control pressure line 14 is also damaged, so that it melts, the control pressure line 14 is no longer leakproof as a result. As a further consequence, the pressure in the control pressure line 14 assumes the ambient pressure.
  • the fuel gas metering device 15 is accordingly also subjected to ambient pressure, which it interprets as a signal for a non-existent air flow from the blower and accordingly determines the corresponding amount of fuel gas, which in the case of no amount of combustion air also means no amount of fuel gas.
  • fuel gas metering devices 15 are constructed in such a way that they require a specific, predetermined air flow or minimum pressure for the release of fuel gas. Since the pressure signal drops below this minimum value when the control pressure line 14 is defective, the fuel gas supply is interrupted and the burner goes out. A flame monitoring device, not shown, detects the extinction of the flame. If necessary, the device control tries to start the burner again, but this fails due to the pressure in the control pressure line 14 being too low, so that the device goes into the fault mode and gives a corresponding indication.
  • the at least the control pressure line 14 can only run in the upper area, since this area is particularly stressed by the thermal buoyancy.
EP19167477.9A 2018-06-12 2019-04-05 Cellule chauffante d'un appareil chauffant Active EP3581859B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102018113993.4A DE102018113993A1 (de) 2018-06-12 2018-06-12 Wärmezelle eines Heizgerätes

Publications (2)

Publication Number Publication Date
EP3581859A1 true EP3581859A1 (fr) 2019-12-18
EP3581859B1 EP3581859B1 (fr) 2021-02-24

Family

ID=66101885

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19167477.9A Active EP3581859B1 (fr) 2018-06-12 2019-04-05 Cellule chauffante d'un appareil chauffant

Country Status (3)

Country Link
EP (1) EP3581859B1 (fr)
DE (1) DE102018113993A1 (fr)
ES (1) ES2864642T3 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19749510A1 (de) * 1997-11-08 1999-05-12 Buderus Heiztechnik Gmbh Mischeinrichtung
DE10015399A1 (de) * 2000-03-28 2001-10-04 Viessmann Werke Kg Gebläseunterstützter Brenner für Gasheizkessel
WO2013060997A2 (fr) * 2011-10-26 2013-05-02 Gdf Suez Dispositif de régulation d'un mélange gazeux
US20150153067A1 (en) * 2009-03-06 2015-06-04 Giannoni France Door with a built-in burner for a heating appliance

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050051155A1 (en) * 2003-08-12 2005-03-10 Tomlinson John L. Direct-fired, gas-fueled heater

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19749510A1 (de) * 1997-11-08 1999-05-12 Buderus Heiztechnik Gmbh Mischeinrichtung
DE10015399A1 (de) * 2000-03-28 2001-10-04 Viessmann Werke Kg Gebläseunterstützter Brenner für Gasheizkessel
US20150153067A1 (en) * 2009-03-06 2015-06-04 Giannoni France Door with a built-in burner for a heating appliance
WO2013060997A2 (fr) * 2011-10-26 2013-05-02 Gdf Suez Dispositif de régulation d'un mélange gazeux

Also Published As

Publication number Publication date
ES2864642T3 (es) 2021-10-14
EP3581859B1 (fr) 2021-02-24
DE102018113993A1 (de) 2019-12-12

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