EP0706016A1 - Chaudière à gaz - Google Patents

Chaudière à gaz Download PDF

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Publication number
EP0706016A1
EP0706016A1 EP95114855A EP95114855A EP0706016A1 EP 0706016 A1 EP0706016 A1 EP 0706016A1 EP 95114855 A EP95114855 A EP 95114855A EP 95114855 A EP95114855 A EP 95114855A EP 0706016 A1 EP0706016 A1 EP 0706016A1
Authority
EP
European Patent Office
Prior art keywords
flow
gas
gas boiler
pockets
boiler according
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
EP95114855A
Other languages
German (de)
English (en)
Other versions
EP0706016B1 (fr
Inventor
Helmut Prof. Dr.-Ing. Burger
Dietmar Debus
Peter Prof. Dr.-Ing. Hofbauer
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.)
Viessmann Werke GmbH and Co KG
Original Assignee
Viessmann Werke GmbH and Co KG
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
Priority claimed from DE19944435745 external-priority patent/DE4435745C1/de
Priority claimed from DE29503697U external-priority patent/DE29503697U1/de
Application filed by Viessmann Werke GmbH and Co KG filed Critical Viessmann Werke GmbH and Co KG
Publication of EP0706016A1 publication Critical patent/EP0706016A1/fr
Application granted granted Critical
Publication of EP0706016B1 publication Critical patent/EP0706016B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F24H1/24—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers
    • F24H1/26—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle forming an integral body
    • F24H1/28—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle forming an integral body including one or more furnace or fire tubes
    • F24H1/287—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water mantle surrounding the combustion chamber or chambers the water mantle forming an integral body including one or more furnace or fire tubes with the fire tubes arranged in line with the combustion chamber
    • 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
    • F24H9/0015—Guiding means in water channels

Definitions

  • the invention relates to a gas boiler, consisting of a water-carrying housing with an upper forward and lower return connection and with a combustion chamber equipped with a flat burner in the upper part of the housing, from the circumferential wall of which are arranged essentially parallel and vertically arranged heating gas pockets to an exhaust gas collection chamber arranged at the bottom of the housing with an exhaust gas connection to lead.
  • Gas boilers of the type mentioned are known, for example, from DE-PS 43 01 804, whose pot-like combustion chambers, which are oriented horizontally with their axes, are equipped with hemispherical gas surface burners, lead to an extremely compact design of the entire combustion chamber area and, in this respect, of the entire gas boiler , which, however, is associated with a high thermal load on the combustion chamber walls, in particular in the area of the connections of the downward heating gas draw pockets, the connection opening cross sections of which reduce the area of the combustion chamber peripheral wall which can be cooled in this area accordingly.
  • the return water introduced into the housing of the gas boiler at the bottom is not simply left to flow upwards, flushing the heating gas pockets and the combustion chamber, to the boiler flow, but it is done specifically and with acceleration of a central core of the inflowing heat transfer medium Actuation of the highly stressed peripheral wall parts of the combustion chamber between the heating gas draw pockets, along which wall parts and accordingly accelerates the heat transfer medium, these wall parts correspondingly intensively cooling, flows upward around the combustion chamber to the flow connection.
  • the gas boiler consists of a water-carrying housing 1 with an upper flow connection 2 and a lower return connection 3 and with a combustion chamber 5 arranged in the upper housing part 1 'and equipped with a surface burner 4, the peripheral wall 6 of which is essentially parallel to one another and vertically arranged heating gas draw pockets 7 lead to an exhaust gas collection chamber 8 with exhaust gas discharge connection 9 arranged at the bottom of the housing 1.
  • the funnel-shaped flow guides 10 are designed as parts or connecting parts of the walls 14 which cover the two open sides S of the pocket package P, one part of the walls 14 being a flow trap 14 'above the return connection 3 is arranged.
  • the flow of the heat transfer medium which is bundled and directed to the outflow openings A, accelerated there and directed towards the central region of the combustion chamber circumferential wall 6, is indicated by arrows which also illustrate that the entire highly stressed lower region of the circumferential wall 6 from the center to both sides is intensively rinsed and thus cooled, which would not be guaranteed to this extent if the entire return water flowing in through the return connection 3, as was customary hitherto, would be left to its own devices and flow upward over the entire cross section of the water-bearing housing 1, which is only indicated by dashed lines could.
  • the size of the outflow openings A, the inclination of the flow guides 10 and the distance of the outflow openings A to the peripheral wall 6 can vary depending on the special conditions on the respective gas boiler, in particular with regard to the expected maximum thermal loads.
  • the flow guides 10 are arranged in the form of a walls 13 which limit the inflow shaft 12 with respect to the width B of the heating gas draw pockets 7 and between the heating gas draw pockets 7, part of the walls 13 being a flow catch 13 'above the return connection 3, and in the embodiment according to FIG. 5 of the walls W forming the flow guides 10, the return-side walls 10 'are angled into the pocket interspaces 7', as shown, and limit the other walls 10 '' on the side remote from the return outflow openings A directed against the peripheral wall 6 of the combustion chamber 5, that is to say there is an inflow from the side of the peripheral wall parts.
  • the emerging flows are indicated by arrows.
  • the arrangement of the return connection 3 on the housing 1 or its assignment to the flow guides 10 or to the walls W or 14 extending downwards is advantageously made such that the major part of the return reaches the flow guides 10 directly .
  • the return connection 3 can be extended inside the housing 1 by a pipe 3' which is provided with outflow openings 11 directed into the pocket spaces 7 ' is (see also Fig. 3).
  • the flow guides 10 are designed in the form of sheet metal strips 15 arranged on one and / or other side flank F of the heating gas draw pockets 7.
  • the metal strips 15 are attached, soldered or welded to the flanks F of the heating gas draw pockets. According to FIG. 10, this takes place on both adjacent flanks of two heating gas draw pockets, and somewhat offset from one another, so that a kind of labyrinth is created as flow guide 10.
  • a sealing profile 15 ' can also be placed on a sheet metal strip 15, or only a profile 16 (only indicated schematically in FIG.
  • flank walls F of the heating gas draw pockets 7 are embossed anyway for reasons of flow guidance on the gas side and for reasons of stability, as illustrated, for example, it is also advantageously possible to design the flow guides 10 in the form of web features 19 pointing into the spaces 7 ′ of the heating gas draw pockets 7 form, as shown in Fig. 11.
  • FIG. 12 finally illustrates an embodiment of the flow guidance in the form of a sheet metal comb, the “tines” 20 of which engage in the pocket interspaces 7 ′, this comb or the two combs each being dotted on the associated wall 14 or forming part of it .
  • FIGS. 13 to 16 differ from the ones described above in that the inflowing water is intercepted by a lower flow baffle, a cross flow is brought about by a second flow baffle and only then a further cross flow along the lower region of the combustion chamber peripheral wall 6 , and this with increasing increase in flow velocity.
  • This embodiment has been found to be the most effective, which is why it is preferred.
  • baffles 26 which are arched in opposite directions in the gussets 25 delimited by the flow guide plates 21, 21 'and the side delimitation plates 22 and the regions 27 of the flow guide plates 21, 21 located above them 'and / or the side boundary plates 22 are provided with a perforation 28.
  • the flow guide plates 21, 21 ' can be designed to have an increasing arch in their attachment areas with the same effect.
  • FIGS. 16A, B A special feature is shown in FIGS. 16A, B.
  • a part of the relatively cold return water is branched off and fed directly to the lower crossflow channel 24, for which purpose separate return lines 3 'are provided in (FIG. 16A) or on (FIG. 16B) housing 1, which to a certain extent cut out a portion of the return flow and Mix in the hot water in the cross-flow duct 24 and lower its temperature somewhat. If such a boiler is operated in the condensing mode, this is somewhat at the expense of the use of the condensing boiler.
  • small catch plates 30 can also be arranged on the side plates with access to the crossflow duct 24 or 24', respectively direct this less hot water into the cross-flow channel 24 or 24 '.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Adjustment Of The Magnetic Head Position Track Following On Tapes (AREA)
  • Gas Separation By Absorption (AREA)
  • Treating Waste Gases (AREA)
  • Baking, Grill, Roasting (AREA)
  • Chimneys And Flues (AREA)
  • Incineration Of Waste (AREA)
EP95114855A 1994-10-06 1995-09-21 Chaudière à gaz Expired - Lifetime EP0706016B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19944435745 DE4435745C1 (de) 1994-10-06 1994-10-06 Gasheizkessel
DE4435745 1994-10-06
DE29503697U 1995-03-04
DE29503697U DE29503697U1 (de) 1995-03-04 1995-03-04 Gasheizkessel

Publications (2)

Publication Number Publication Date
EP0706016A1 true EP0706016A1 (fr) 1996-04-10
EP0706016B1 EP0706016B1 (fr) 2001-01-10

Family

ID=25940805

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95114855A Expired - Lifetime EP0706016B1 (fr) 1994-10-06 1995-09-21 Chaudière à gaz

Country Status (3)

Country Link
EP (1) EP0706016B1 (fr)
AT (1) ATE198658T1 (fr)
DE (1) DE59508954D1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017058034A1 (fr) * 2015-09-28 2017-04-06 Aic Społka Akcyjna Chauffe-eau à combustible
EP3336427A1 (fr) * 2016-12-16 2018-06-20 Ikerlan, S. Coop. Brûleur à gaz

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2388647A (en) * 1944-10-07 1945-11-06 Howard G Sawyer Fire-tube boiler
FR2472725A1 (fr) * 1979-12-27 1981-07-03 Barrault Rene Louis Chaudiere a lame d'eau et a tubes de fumees
EP0271434A2 (fr) * 1986-12-06 1988-06-15 Joh. Vaillant GmbH u. Co. Chaudière de chauffage d'acier
DE9318680U1 (de) 1993-12-07 1994-02-24 Vießmann, Hans, Dr., 35088 Battenberg Gasheizkessel

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2388647A (en) * 1944-10-07 1945-11-06 Howard G Sawyer Fire-tube boiler
FR2472725A1 (fr) * 1979-12-27 1981-07-03 Barrault Rene Louis Chaudiere a lame d'eau et a tubes de fumees
EP0271434A2 (fr) * 1986-12-06 1988-06-15 Joh. Vaillant GmbH u. Co. Chaudière de chauffage d'acier
DE9318680U1 (de) 1993-12-07 1994-02-24 Vießmann, Hans, Dr., 35088 Battenberg Gasheizkessel

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017058034A1 (fr) * 2015-09-28 2017-04-06 Aic Społka Akcyjna Chauffe-eau à combustible
EP3336427A1 (fr) * 2016-12-16 2018-06-20 Ikerlan, S. Coop. Brûleur à gaz

Also Published As

Publication number Publication date
DE59508954D1 (de) 2001-02-15
EP0706016B1 (fr) 2001-01-10
ATE198658T1 (de) 2001-01-15

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