EP0599796A1 - Atmosphärischer Gaskessel für Zentralheizung - Google Patents

Atmosphärischer Gaskessel für Zentralheizung Download PDF

Info

Publication number
EP0599796A1
EP0599796A1 EP93870220A EP93870220A EP0599796A1 EP 0599796 A1 EP0599796 A1 EP 0599796A1 EP 93870220 A EP93870220 A EP 93870220A EP 93870220 A EP93870220 A EP 93870220A EP 0599796 A1 EP0599796 A1 EP 0599796A1
Authority
EP
European Patent Office
Prior art keywords
boiler
plates
perforations
burnt gases
studs
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
EP93870220A
Other languages
English (en)
French (fr)
Other versions
EP0599796B1 (de
Inventor
Mathieu Mueller
Moreno Furlan
Philippe Roulin
François-Xavier Geubel
Remy Bastin
Henri Calvi
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.)
Saint-Roch Couvin Sa/nv
Original Assignee
Saint-Roch Couvin Sa/nv
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 Saint-Roch Couvin Sa/nv filed Critical Saint-Roch Couvin Sa/nv
Publication of EP0599796A1 publication Critical patent/EP0599796A1/de
Application granted granted Critical
Publication of EP0599796B1 publication Critical patent/EP0599796B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/022—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being wires or pins
    • 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
    • F24H1/38—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water contained in separate elements, e.g. radiator-type element
    • 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
    • F24H9/0005—Details for water heaters
    • F24H9/001—Guiding means
    • F24H9/0026—Guiding means in combustion gas channels

Definitions

  • a very low temperature boiler with a power of 16 to 75 KW intended for central heating of premises and in particular that of a single-family dwelling.
  • Such a boiler has a high calorific efficiency thanks to the fact that the losses to the atmosphere and by sweeping the hearth when the boiler is stopped are reduced, by reduction of the average boiler temperature. This is obtained in particular by limiting the outlet temperature of the heat transfer fluid and by direct control of the burner and the boiler circulator. When the heat demand is satisfied, the operation of the circulator is timed in order to evacuate the excess calories still present at the level of the boiler.
  • Document US-A-1,855,777 discloses a gas boiler for individual application comprising a combustion chamber and an exchanger made up of a series of juxtaposed cast iron plates, arranged vertically and assembled together by means of tie rods. Pairs of consecutive plates alternately delimit circulation zones on the one hand, water to be heated, and on the other hand, burnt gases.
  • the walls of the plates in contact with the combustion gases are lined with polyhedral pins arranged in a staggered fashion over the entire exchange surface, facing the pins of a plate juxtaposed so as to touch.
  • the passage sections between the nipples do not allow sufficient natural draft.
  • GB-A-291417 discloses a water heater for a steam generator.
  • a sectional boiler body made up of a series of cast iron plates forming a combustion chamber with the end panels and a sheet steel floor with perforations intended for combustion air.
  • the walls of the trays in contact with the burnt gases are lined with vertical cast iron fins arranged in staggered rows with respect to a vertical axis.
  • the height of the fins is greater than half the distance between two neighboring plates, so as to achieve by their interpenetration and their staggered arrangement of sinuous channels which provide three-dimensional turbulence in the upward flow of burnt gases.
  • the passage sections are sufficient to ensure a natural draft.
  • the external panels of the exchanger form the lateral faces of the cast iron block of the boiler.
  • the intermediate panels each have at their base a square or rectangular cavity delimited by a tubular frame integral with the panel. Each cavity is superimposed on that of the neighboring panels to form a combustion chamber of substantially cubic shape.
  • a turbulence burner connected to a gas source by means of a solenoid valve.
  • An ignition electrode ensures direct automatic ignition of the burner after each burner interruption, so as to reset the combustion of the gas flow admitted by the solenoid valve to supply the gas burner at each calorie demand.
  • a monitoring electrode controls the presence of a flame when the regulation, including an aquastat for adjusting the temperature of the boiler, controls the opening of the solenoid valve.
  • the present invention aims to produce a gas boiler in accordance with the regulations in force in Belgium and many countries, in particular in Germany. It also aims to improve the thermal efficiency and reduce the CO and NO x content of the burnt gases.
  • This combination is found in an atmospheric gas boiler of the type described in the first paragraph of this memo.
  • This boiler is essentially characterized in that the plates in contact with the burnt gases are lined with cast iron nipples of oblong section truncated at the top, arranged in staggered rows with respect to a vertical axis, the length of the nipples between two neighboring plates bottom to top, so as to constitute obstacles which ensure the turbulence of an ascending current of burnt gases in three orthogonal directions and the evaporation of the droplets of condensed water, which fall on the truncated top of the nipples.
  • the bottom of the combustion chamber is covered with a steel sheet having perforations.
  • the secondary air passes through the aforesaid perforations and optimizes the total air flow necessary for the combustion of the gas, the majority primary air entering the cylindrical ramps of the burners by the open face perpendicular to the axis of the arm.
  • the perforations form a row arranged under each cylindrical ramp of the burner.
  • the boiler is provided with an ignition electrode and an electrode for monitoring the presence of a kanthal flame, preferably identical.
  • the ignition electrode resets the flame by a high voltage discharge while the monitoring electrode, in contact with the flame, transmits a potential difference due to ionization.
  • the two electrodes are identical and consist, for example, of kanthal electrodes.
  • the atmospheric gas boiler comprises a sectional boiler body 1, consisting of a series of trapezoidal plates 2 coupled in pairs to form the elements 3 of an exchanger in which circulates the heat transfer fluid and around which the burnt gases circulate.
  • the aforementioned elements 3 are interconnected by means of biconical nipples 4 placed in bushings for passage between elements 3 of the water to be heated and a TAPAFILL® sealing bead placed in the joint situated on the perimeter of each of the intermediate plates assembled in known manner by means of tie rods 5.
  • Each of the elements 3 of the body of the boiler 1 is provided with a cavity 6 forming with the cavities of the neighboring elements 3, a combustion chamber 7 with natural draft.
  • the roof 8 of the combustion chamber is vaulted to prevent the deposition of sludge and scale at the places where the heating elements are most stressed (Fig. 2).
  • the elimination of sludge avoids overheating.
  • the distance between the plates 2 must be judiciously chosen to limit the pressure drops in the passage of the burnt gases and promote the recovery of calories.
  • nipples 9 of cast iron of oblong section truncated at the top 10 are lined with nipples 9 of cast iron of oblong section truncated at the top 10 (FIG. 4). These pins 9 are staggered relative to a vertical axis. The length of the pins 9 is substantially equal to half of the difference between two neighboring elements 3 so as to form sinuous channels swept by the updraft of the burnt gases.
  • the nipples 9 constitute obstacles which increase the heat exchanger exchange surface and create three-dimensional turbulence in the burnt gases (Fig 6).
  • the top 10 of the truncated studs forms a horizontal surface which receives the droplets of condensed water in the upper part of the boiler body 1, at the points where the dew points of the burnt gases are reached.
  • the droplets are crushed on each of said surfaces and are eliminated by evaporation.
  • the walls of the plates 2 in contact with the heat transfer fluid are provided with baffles 28 which form channels 29 for circulation of the heat transfer fluid (FIG. 3).
  • the inlet pipe of the heat transfer fluid to be heated is provided with a flow distributor 29 which distributes the flow of heat transfer fluid through a series of orifices 33 uniformly between the various plates 2 of the boiler body in order to irrigate the various plates 2 uniformly (Fig. 8). This distributor improves the overall efficiency of the boiler.
  • a tubular turbulence burner 11 of the WORGAS® type described in document PCT / IT 87/0079 is inserted into the combustion chamber 7, as illustrated in FIG. 7.
  • the burner comprises several cylindrical stainless steel ramps 12 each arranged just in below the scanning zones of the boiler body 1 for the burnt gases.
  • the turbulence burner 11 inserted in said chamber and connected to a gas source 13 by means of a solenoid valve 14 controlled by a regulation system comprising an ignition electrode 16, a monitoring electrode 23 for the presence of the flame , a aquastat 17 for adjusting the boiler temperature and a safety aquastat.
  • the bottom of the combustion chamber 7 is covered with a steel sheet 19 having perforations 30 and an upwardly curved rim.
  • the perforations 30 are distributed in rows 20 arranged under each ramp 12 of the burner 11.
  • the secondary air passes through the aforementioned perforations 30 and ensures optimum combustion.
  • This manhole 26 is internally covered with an insulating layer 27 in order to reduce thermal losses, and incidentally absorb the combustion noise and reduce the propagation of noise towards a flue 31 (Fig. 9).
  • This insulation 27 reduces the heat losses and attenuates the acoustic vibrations in the smoke duct 31.
  • An inclined arrangement of the upper edge 22 of the elements 3 of the body of the boiler 1 eliminates all risk of overheating because it allows natural elimination of any gas occlusion.
  • the body of the boiler is covered with a mantle 32 made of removable sheet steel panels.
  • An ignition electrode 16 disposed above one of the cylindrical ramps 12 of the tubular burner 11 ensures direct automatic ignition of the burner 11, each time that the regulation orders the solenoid valve 14 to reset the gas supply. due to a calorie demand after interruption.
  • the ignition electrode 16 which resets the flame by a high voltage discharge and the ionization electrode 23 intended to monitor the flame are identical. These are, for example, kanthal electrodes sold by SAPCO ® in Courbevoie-France.
  • the shape and dimensions of the nipples are important.
  • the truncated face of the studs 9 has a trapezoidal shape dictated by the requirements for demolding the cast iron panels.
  • the surface is sized to accommodate a droplet of water.
  • the width and the height of the nipples are dimensioned experimentally by determining a deflection angle which prevents the separation of the upward flow of the burnt gases.
  • the height and length of the nipples varies according to their position on the panels. Starting from the top down, the height of the nipples varies from 29mm to 22mm and the length from 17 to 15, while the width is kept constant from 14mm at the base to 10.5mm at the truncated top.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Control Of Combustion (AREA)
EP93870220A 1992-11-23 1993-11-18 Atmosphärischer Gaskessel für Zentralheizung Expired - Lifetime EP0599796B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE9201015 1992-11-23
BE9201015A BE1006365A5 (fr) 1992-11-23 1992-11-23 Chaudiere atmospherique a gaz pour chauffage central.

Publications (2)

Publication Number Publication Date
EP0599796A1 true EP0599796A1 (de) 1994-06-01
EP0599796B1 EP0599796B1 (de) 1997-01-22

Family

ID=3886533

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93870220A Expired - Lifetime EP0599796B1 (de) 1992-11-23 1993-11-18 Atmosphärischer Gaskessel für Zentralheizung

Country Status (4)

Country Link
EP (1) EP0599796B1 (de)
AT (1) ATE148215T1 (de)
BE (1) BE1006365A5 (de)
DE (1) DE69307665T2 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1136764A2 (de) * 2000-03-18 2001-09-26 Robert Bosch Gmbh Wärmetauscher für ein Gasbrennwertgerät
EP1108963A3 (de) * 1999-12-17 2003-01-08 Truma Gerätetechnik GmbH & Co. Rauchgas-Wärmetauscher
GB2381306A (en) * 2001-08-09 2003-04-30 Gruppo Imar S P A Heat exchanger plates

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB291417A (en) * 1927-06-04 1929-01-04 Bastian Morley Co Improvements in and relating to fluid heaters
US1855777A (en) * 1928-03-28 1932-04-26 Bryant Heater & Mfg Company Boiler section
FR957533A (de) * 1950-02-23
DE2141785A1 (de) * 1971-08-20 1973-02-22 Rheinstahl Ag Gusseiserner gliedergasheizkessel

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR957533A (de) * 1950-02-23
GB291417A (en) * 1927-06-04 1929-01-04 Bastian Morley Co Improvements in and relating to fluid heaters
US1855777A (en) * 1928-03-28 1932-04-26 Bryant Heater & Mfg Company Boiler section
DE2141785A1 (de) * 1971-08-20 1973-02-22 Rheinstahl Ag Gusseiserner gliedergasheizkessel

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1108963A3 (de) * 1999-12-17 2003-01-08 Truma Gerätetechnik GmbH & Co. Rauchgas-Wärmetauscher
EP1136764A2 (de) * 2000-03-18 2001-09-26 Robert Bosch Gmbh Wärmetauscher für ein Gasbrennwertgerät
EP1136764A3 (de) * 2000-03-18 2003-01-29 Robert Bosch Gmbh Wärmetauscher für ein Gasbrennwertgerät
GB2381306A (en) * 2001-08-09 2003-04-30 Gruppo Imar S P A Heat exchanger plates
GB2381306B (en) * 2001-08-09 2005-09-07 Gruppo Imar S P A Gas-liquid heat exchanger and boiler incorporating said heat exchanger

Also Published As

Publication number Publication date
ATE148215T1 (de) 1997-02-15
BE1006365A5 (fr) 1994-08-02
EP0599796B1 (de) 1997-01-22
DE69307665D1 (de) 1997-03-06
DE69307665T2 (de) 1997-09-04

Similar Documents

Publication Publication Date Title
CA1141607A (fr) Chaudiere, notamment pour installation de chauffage
EP0040557A1 (de) Heizeinrichtung mit Wärmerekuperator
EP0350388A1 (de) Heisswassergerät
EP0599796B1 (de) Atmosphärischer Gaskessel für Zentralheizung
FR2485697A1 (fr) Cheminee pour le chauffage de locaux et pour la production d'eau chaude pour une utilisation hydrosanitaire
EP0498748B1 (de) Gasbeheizter gusseisener Gliederheizkessel mit totaler Vormischung
FR2553869A1 (fr) Chaudiere a condensation pour chauffage a fluide caloporteur
EP0171340A1 (de) Kondensationsheisswassererzeuger
EP0029783B1 (de) Vorrichtung zur Wiedergewinnung der Wärme für offene Kamine
EP0062573B1 (de) Erhitzer für festen Brennstoff
EP0271392B1 (de) Feststoffbefeuerter Heizkessel und insbesondere Holzbefeuerter Heizkessel
FR2547393A1 (fr) Chambre de combustion pour combustibles solides
CA1156113A (fr) Cheminee domiciliaire avec chauffe-eau incorpores
LU84141A1 (fr) Systeme de chauffage
FR2577019A1 (fr) Installation de chauffage pour cheminee a foyer ouvert et tirage inverse
FR2687214A1 (fr) Chaudiere a combustible solide, et particulierement chaudiere a bois.
FR2503847A1 (fr) Generateur d'air chaud a chauffage mixte gaz-electricite
EP3608592A1 (de) Heizgerät, das mindestens eine lufteinspritzleitung umfasst
FR2506902A1 (fr) Cheminee-poele monobloc a circulation d'air et a parachevement catalytique de la combustion
FR2674006A1 (fr) Chaudiere sectionnable a gaz en fonte a premelange total.
FR2494816A1 (fr) Dispositif de recuperation de chaleur dans l'atre d'une cheminee
FR2488375A1 (fr) Appareil de production d'eau chaude dans une cheminee
EP0716277A1 (de) Einstückiges Bauteil für eine Flüssigkeitserhitzungsanlage
BE513006A (de)
FR2477679A1 (fr) Ensemble de foyer de combustion pour chauffage de locaux

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE ES FR GB IT LI LU NL

17P Request for examination filed

Effective date: 19941123

17Q First examination report despatched

Effective date: 19951122

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE ES FR GB IT LI LU NL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19970122

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19970122

Ref country code: GB

Effective date: 19970122

Ref country code: FR

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19970122

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19970122

Ref country code: AT

Effective date: 19970122

REF Corresponds to:

Ref document number: 148215

Country of ref document: AT

Date of ref document: 19970215

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: E. BLUM & CO. PATENTANWAELTE

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 69307665

Country of ref document: DE

Date of ref document: 19970306

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 19970122

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19971118

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19971130

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19971130

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19971130

26N No opposition filed
BERE Be: lapsed

Owner name: S.A. SAINT-ROCH COUVIN N.V.

Effective date: 19971130

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19980801

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST