EP0024381A2 - Hängender Wärmetauscher für einen Verbrennungskessel - Google Patents

Hängender Wärmetauscher für einen Verbrennungskessel Download PDF

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Publication number
EP0024381A2
EP0024381A2 EP80810256A EP80810256A EP0024381A2 EP 0024381 A2 EP0024381 A2 EP 0024381A2 EP 80810256 A EP80810256 A EP 80810256A EP 80810256 A EP80810256 A EP 80810256A EP 0024381 A2 EP0024381 A2 EP 0024381A2
Authority
EP
European Patent Office
Prior art keywords
exchanger
combustion chamber
free space
exchanger according
double wall
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.)
Withdrawn
Application number
EP80810256A
Other languages
English (en)
French (fr)
Other versions
EP0024381A3 (de
Inventor
Claude Hays
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.)
EVITHERM SA
Original Assignee
EVITHERM SA
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 EVITHERM SA filed Critical EVITHERM SA
Publication of EP0024381A2 publication Critical patent/EP0024381A2/de
Publication of EP0024381A3 publication Critical patent/EP0024381A3/de
Withdrawn legal-status Critical Current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
    • 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
    • F24H2230/00—Solid fuel fired boiler

Definitions

  • the invention relates to generators of hot fluids such as water, steam, air or others, and particularly generators where the fluid follows a circuit in which it is separated from the production of heat which has its seat in a room combustion, therefore fuel boilers. It relates more precisely to a heat exchanger between the gases produced by combustion and the fluid to be heated which circulates in a blade forming a wall and eliminating the combustion chamber.
  • the object of the invention is to overcome these drawbacks while considerably improving the thermal efficiency compared to known exchanger boilers.
  • the expansion problems are solved by the shape of the exchanger, in one or more (advantageously two) distinct and separate parts, and fixed on one side therefore cantilevered.
  • a baffle device increases the path of the fluid to be heated, therefore the effective exchange surface.
  • the external profile, both transverse and longitudinal of each of the parts of the exchanger is shaped so as to facilitate the evacuation of the combustion gases while increasing their travel at the level of the exchange surfaces.
  • the boiler shown in the drawings conventionally comprises a combustion chamber 1, limited below in the particular case which is illustrated, by a grid 2 serving to support a solid fuel. What will be explained in relation to this particular case can still be applied by analogy mutatis / with some small modifications in the case of the use of a liquid or gaseous fuel.
  • the combustion chamber 1 is moreover limited by a cylindrical casing 3 of longitudinal axis with double wall which closes it on the sides, as well as at the top and at the bottom, leaving under the grate 2 sufficient free space 4 for a good distribution of the air necessary for combustion.
  • the combustion chamber 1 is further closed at the end on the one hand by a front door 5 in which is formed at a level below that of the grate 2 an opening 6 for the supply of fresh air, and on the other hand part by a rear facade 7 in which is formed in the upper part a duct 8 for discharging the fumes.
  • a second evacuation duct 9 also crosses in the upper part and towards the rear the upper part of the double envelope 3.
  • the heat transfer fluid to be heated arrives at the bottom and preferably at the rear via an inlet duct 10 inside the double wall 3 and escapes from this envelope at the top and before 11 after having circulated in the form of a blade in the double wall 3 and absorbs the heat supplied by the radiation from the hearth and the licking of the internal wall of the casing 3 by the flames and products of combustion.
  • the boiler body which has just been described is also enclosed in a thermally insulating covering 12 itself contained in a sheet metal casing 13.
  • the exchanger 14 comprises two parts 15, 15 ′ shown symmetrical with respect to the vertical plane AA of the boiler and which in fact constitute two elementary exchangers each connected to one of the side faces of the double wall 3 and preferably about two thirds of the combustion chamber 1 above the grate 2, so as to be in communication with the interior of the double wall 3.
  • the median plane of each of the parts 15.15 ' is approximately horizontal, and these two parts 15.15' are separated from each other so as to provide a free space between them 16 by which the combustion gases can flow upwards.
  • the two parts 15, 15 ′ are cantilevered, since they are fixed only at one of their ends, so that the expansions which arise cause practically no stress in these parts. 15.15 ', the end near the median vertical plane being completely free or "floating".
  • This arrangement also presents an important additional advantage: the combustion products which rise by licking the lateral faces of the double wall 3 are diverted by the exchanger towards the free space 16 and their course in contact with the envelope of the heat-transfer fluid. is therefore extended, which greatly improves the efficiency of the heat exchange.
  • each part 15, 15 ′ of the exchanger 14 does not form a single blade extending in the upper region of the combustion chamber 1 but two adjacent blades (superimposed on the drawings).
  • the external faces 17, 18 of each part 15, 15 ′ are fixed to the internal face of the double wall 3 and, between them, a middle plate 19 is fixed to the external face of the double wall 3 while having its other end (on the side of the vertical median plane AA) free.
  • a middle plate 19 is fixed to the external face of the double wall 3 while having its other end (on the side of the vertical median plane AA) free.
  • the free space 16 between the two parts 15, 15 ′ will advantageously be slightly divergent from back to front, as illustrated in Figure 3.

Landscapes

  • 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)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP80810256A 1979-08-21 1980-08-19 Hängender Wärmetauscher für einen Verbrennungskessel Withdrawn EP0024381A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH7605/79 1979-08-21
CH760579 1979-08-21

Publications (2)

Publication Number Publication Date
EP0024381A2 true EP0024381A2 (de) 1981-03-04
EP0024381A3 EP0024381A3 (de) 1981-05-06

Family

ID=4327740

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80810256A Withdrawn EP0024381A3 (de) 1979-08-21 1980-08-19 Hängender Wärmetauscher für einen Verbrennungskessel

Country Status (4)

Country Link
EP (1) EP0024381A3 (de)
ES (1) ES8105848A1 (de)
FR (1) FR2463899A1 (de)
PT (1) PT71711B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2741006A3 (de) * 2012-12-06 2017-06-14 Wagner Production s.r.o. Warmluft- und/oder Wärmetauscherofen für feste Brennstoffe

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2119606A (en) * 1937-08-23 1938-06-07 Earl C Stauffer Domestic heating boiler
US2128820A (en) * 1938-02-10 1938-08-30 Holtz Ireneus Basil Furnace
DE2434536A1 (de) * 1974-07-18 1976-02-05 Rapido Dinsing Werk Gmbh Heizkessel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2741006A3 (de) * 2012-12-06 2017-06-14 Wagner Production s.r.o. Warmluft- und/oder Wärmetauscherofen für feste Brennstoffe

Also Published As

Publication number Publication date
PT71711B (fr) 1981-06-25
FR2463899A1 (fr) 1981-02-27
ES494418A0 (es) 1981-06-01
EP0024381A3 (de) 1981-05-06
ES8105848A1 (es) 1981-06-01
PT71711A (fr) 1980-09-01

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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

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PUAL Search report despatched

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AK Designated contracting states

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

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Effective date: 19820413

RIN1 Information on inventor provided before grant (corrected)

Inventor name: HAYS, CLAUDE