EP0443931A1 - Wärmerekuperator für Kaminöfen - Google Patents

Wärmerekuperator für Kaminöfen Download PDF

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Publication number
EP0443931A1
EP0443931A1 EP91400424A EP91400424A EP0443931A1 EP 0443931 A1 EP0443931 A1 EP 0443931A1 EP 91400424 A EP91400424 A EP 91400424A EP 91400424 A EP91400424 A EP 91400424A EP 0443931 A1 EP0443931 A1 EP 0443931A1
Authority
EP
European Patent Office
Prior art keywords
heat recovery
recovery unit
unit according
fumes
recovery device
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Withdrawn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
EP91400424A
Other languages
English (en)
French (fr)
Inventor
Philippe Clementin
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.)
Les Cheminees Philippe SA
Original Assignee
Les Cheminees Philippe 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
Priority claimed from FR9002454A external-priority patent/FR2658590B2/fr
Application filed by Les Cheminees Philippe SA filed Critical Les Cheminees Philippe SA
Publication of EP0443931A1 publication Critical patent/EP0443931A1/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24B—DOMESTIC STOVES OR RANGES FOR SOLID FUELS; IMPLEMENTS FOR USE IN CONNECTION WITH STOVES OR RANGES
    • F24B7/00—Stoves, ranges or flue-gas ducts, with additional provisions for convection heating 
    • F24B7/005—Flue-gas ducts

Definitions

  • the invention relates to improvements made to the heat recuperator for fireplaces operating with an open or closed hearth, intended to be placed at the level of the chimney flue to recover the calories present in the combustion fumes, subject of the main patent (FR- 88.17150).
  • the chimney has good control of the heating rate by adjusting the air intake, the draft is more efficient and the problems of discharge are eliminated.
  • the combustion fumes can either pass directly from the inlet to the outlet of the exchanger, without circulating in the corridors of the heat exchanger, or run through the said corridors of the 'heat exchanger, in which case there is heat exchange and heat recovery using a heat transfer fluid.
  • the heat recovery device described in the main patent shows a feasible construction in mechanically welded sheet.
  • the heat recovery unit is generally integrated in a chimney flue and that its housing is cramped.
  • the main purpose of the present invention is to provide improvements to the heat recovery unit for fireplaces operating with an open or closed hearth according to the main patent (FR-88.17150), which has the same advantages, namely in particular the possibility of open hearth operation without that the recuperator does not create a pressure drop to maintain an excellent draft at the chimney but whose structure is compatible with molding techniques, which are interesting in this field.
  • the heat recuperator of the present invention is removable to ensure effective cleaning of its internal walls and according to a preferred embodiment of the invention, it also offers ease of cleaning of the places where the dirt is located.
  • the heat recovery unit for a chimney operating with an open or closed hearth intended to be placed at the connection on the chimney flue to recover the calories present in the combustion fumes, according to claim 1 of the patent main (FR-88.17150), is characterized by the fact that it is formed of at least two shells separated by a plate with a direct discharge hatch, at least one of the shells comprising at least one lateral passage for circulation of fumes.
  • the present invention relates to improvements made to the heat recovery unit for a chimney operating with an open or closed hearth, intended to be placed at the level of the chimney flue to recover the calories present in the combustion fumes, subject of the main patent (FR-88.17150) .
  • the invention relates to manufacturers of heating equipment.
  • the presence of a heat recovery unit makes it possible to significantly improve the overall thermal efficiency of combustion by transferring the calories present in the combustion fumes to a heat transfer fluid.
  • the present invention relates particularly to a heat recovery unit which offers the same advantages in terms of principle as the heat recovery unit device described in the main patent (FR-88.17150), that is to say in particular the possibility of directly evacuating the fumes of combustion during operation of the fireplace with the door open or retracted while benefiting from a method of construction by molding, at least in part, and which, in addition, has ease of maintenance, in particular with regard to the cleaning of dirty parts .
  • the heat recuperator of the present invention mainly consists of three parts, as illustrated in FIG. 1.
  • the outlet of the device is connected to the lower shell 2, which corresponds to the inlet 21 of the combustion fumes in the heat recovery unit.
  • the upper shell 1 also has a connector 20 to the chimney flue to ensure the evacuation of combustion fumes.
  • the fumes present in the interior volume of the lower shell 2 pass through the opening released by the hatch 4 and communicate directly with the conduit 20 for discharging the fumes.
  • the hatch 4 constitutes a bypass and the combustion fumes simply pass through the heat recovery unit, as shown in particular in arrow 22 in FIG. 4, without pressure loss but also without recovering a maximum of heat energy.
  • This operating mode of the heat recuperator corresponds to the open hearth appearance of the chimney.
  • At least one of the two shells 1 or 2 comprises at least one side passage 5, 6 for circulation of the combustion fumes.
  • Figure 2 shows schematically the interior space defined by the upper 1 and lower 2 shells.
  • the orifices 7 and 8 are separated from the smoke evacuation duct 20 by a transverse partition 10.
  • the smoke must therefore pass through the lateral corridors 5 and 6 delimited on the one hand by the external walls 11 and 12 of the heat recovery unit and by internal longitudinal walls 13 and 14.
  • the lateral corridors 5 and 6 preferably have a circulation path for the winding fumes.
  • This characteristic promotes the exchange of heat between the combustion fumes and the heat transfer fluid present outside the heat recovery unit.
  • the sinuous path of the combustion fumes inside the lateral corridors 5 and 6 is shown diagrammatically by the arrows 15 as shown in FIGS. 2 and 4.
  • the latter have an outer wall 11 and 12 in the shape of a sawtooth.
  • the surface of the outer walls of the corridors 5 and 6 is therefore large in size to perfect the heat exchange.
  • the walls of the interior partitions 13 and 14 are provided planar; thus, it is advisable to set up in each lane 5, 6 baffles 16 and 17 whose role is to inflect the direction of flow of the fumes in each lane in order to have a winding path with maximum turbulence.
  • the baffles of a corridor are in the form of a grid, as illustrated in FIG. 3, threaded like a drawer into the shell 1.
  • the bars 18 of the grid 16 have the same pitch as the saw teeth of the outer wall 11 and 12 of the shell 1.
  • each of its bars 18 falls opposite one of the vertices of the saw teeth of the outer wall 11 and 12 to constitute the baffles.

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  • Engineering & Computer Science (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)
EP91400424A 1990-02-19 1991-02-18 Wärmerekuperator für Kaminöfen Withdrawn EP0443931A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9002454A FR2658590B2 (fr) 1988-12-20 1990-02-19 Dispositif de recuperation de chaleur pour cheminee a atre.
FR9002454 1990-02-19

Publications (1)

Publication Number Publication Date
EP0443931A1 true EP0443931A1 (de) 1991-08-28

Family

ID=9394193

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91400424A Withdrawn EP0443931A1 (de) 1990-02-19 1991-02-18 Wärmerekuperator für Kaminöfen

Country Status (1)

Country Link
EP (1) EP0443931A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI412397B (zh) * 2007-06-07 2013-10-21 Koyo Thermo Sys Co Ltd 熱回收裝置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH90635A (de) * 1920-11-25 1921-09-16 Rob Kundert Ofenaufsatz.
CH103396A (de) * 1923-08-22 1924-05-16 Ranisav Demeter Ofenaufsatz.
GB2081886A (en) * 1980-07-28 1982-02-24 Corning Glass Works Wood burning stove
US4319556A (en) * 1981-03-09 1982-03-16 Jamestown Group Catalytic stove
GB2085153A (en) * 1980-10-09 1982-04-21 Franklin Ind Inc Stove with catalytic converter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH90635A (de) * 1920-11-25 1921-09-16 Rob Kundert Ofenaufsatz.
CH103396A (de) * 1923-08-22 1924-05-16 Ranisav Demeter Ofenaufsatz.
GB2081886A (en) * 1980-07-28 1982-02-24 Corning Glass Works Wood burning stove
GB2085153A (en) * 1980-10-09 1982-04-21 Franklin Ind Inc Stove with catalytic converter
US4319556A (en) * 1981-03-09 1982-03-16 Jamestown Group Catalytic stove

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI412397B (zh) * 2007-06-07 2013-10-21 Koyo Thermo Sys Co Ltd 熱回收裝置

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