EP0193433A1 - Heizungsanlage für offene Kamine mit umgekehrtem Zug - Google Patents

Heizungsanlage für offene Kamine mit umgekehrtem Zug Download PDF

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Publication number
EP0193433A1
EP0193433A1 EP86400210A EP86400210A EP0193433A1 EP 0193433 A1 EP0193433 A1 EP 0193433A1 EP 86400210 A EP86400210 A EP 86400210A EP 86400210 A EP86400210 A EP 86400210A EP 0193433 A1 EP0193433 A1 EP 0193433A1
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EP
European Patent Office
Prior art keywords
vertical
exchanger
receptacle
installation according
conduits
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Withdrawn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
EP86400210A
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English (en)
French (fr)
Inventor
Guy Albert Percebois
Bernard Helas
Original Assignee
HELAS BERNARD
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 HELAS BERNARD filed Critical HELAS BERNARD
Publication of EP0193433A1 publication Critical patent/EP0193433A1/de
Withdrawn legal-status Critical Current

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    • 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
    • F24B1/00—Stoves or ranges
    • F24B1/18—Stoves with open fires, e.g. fireplaces
    • F24B1/183—Stoves with open fires, e.g. fireplaces with additional provisions for heating water
    • 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
    • F24B1/00—Stoves or ranges
    • F24B1/18—Stoves with open fires, e.g. fireplaces
    • F24B1/1804—Reverse-draught fireplaces

Definitions

  • the present invention relates to an open hearth heating installation and reverse draft.
  • a reverse-draw heating installation comprising a heat recuperator with circulation of hot water which comprises a horizontal exchanger and a vertical exchanger connected to a cold water inlet and to a hot water outlet.
  • the horizontal exchanger extends under a grid intended to receive the fuel and in a compartment constituting the combustion chamber, the bottom of the latter comprising an ashtray.
  • This combustion chamber opens into a vertical smoke evacuation compartment in which the vertical exchanger is arranged.
  • the upper part of this vertical compartment opens into the chimney itself.
  • the thermal efficiency of these installations can reach around 70%, while in normal draft installations, this efficiency does not exceed 20 to 30%, since a part of the calories is evacuated by the escaping fumes straight up into the chimney.
  • the horizontal and vertical heat exchangers generally consist of tubes inside which the water to be heated is circulated.
  • the essential object of the present invention is to remedy this drawback by creating an open hearth heating system and reverse draft, the heat recuperator of which has a vertical exchanger which can be easily cleaned without dismantling, while having an excellent heat exchange efficiency. , its construction being, moreover, simple and inexpensive.
  • the heating installation for an open hearth fireplace and reverse draft in which the vertical exchanger is constituted by a rectangular sheet metal receptacle, one of the dimensions of which is small compared to the other two, and which comprises at its lower part a water inlet connected to the horizontal exchanger and at its upper part an outlet for hot water, is characterized in that this receptacle contains vertical conduits serving for the passage of smoke, the lower part of which opens into the compartment of the combustion chamber and the upper part of which opens into the chimney proper, these vertical conduits being arranged one beside the other so as to define -between them thin spaces in which the water circulates .
  • These vertical conduits have a section in the form of a polygon or a circle.
  • these vertical conduits of the vertical exchanger make it possible to create between them and the side walls of the receptacle, thin passages, in which the water to be heated circulates, these thin passages being favorable for obtaining '' an excellent heat exchange efficiency between the fumes passing through the vertical conduits and this water.
  • the vertical conduits are fixed to the side walls of the sheet metal receptacle, by means of metal studs welded to these walls and to these conduits.
  • These studs constitute a simple and effective means for fixing the conduits to the walls of the receptacle and for imparting sufficient resistance thereto with respect to the pressure exerted by the water.
  • these pads preferably made up of discs, do not disturb the circulation of water inside the exchanger.
  • the horizontal exchanger comprises a series of parallel tubes placed between a cold water collector and a heated water collector arranged perpendicular to the receptacle of the vertical exchanger, the water outlet from the heated water collector being connected to the water inlet located at the bottom of the vertical exchanger receptacle.
  • the heat recovery unit of the installation according to the invention is thus constituted by the combi original creation of horizontal tubes in which water circulates with vertical conduits of polygon section, crossed by smoke and surrounded by water which communicates with the horizontal tubes.
  • This original combination allows to obtain simultaneously, a simple construction, having a high thermal efficiency and whose maintenance is easy and inexpensive.
  • the heating installation for an open hearth chimney with reverse draft comprises a heat recuperator with water circulation, which comprises a horizontal exchanger 1 and a vertical exchanger 2 connected to an inlet d cold water 3 and a hot water outlet 4 which is itself connected to a central heating installation not shown.
  • the horizontal exchanger 1 extends under a grid 5 formed of bars intended to receive the fuel and above a compartment 6 (see FIG. 3) constituting the combustion chamber, the bottom of the latter comprising a removable ashtray 7.
  • This combustion chamber 6 opens into a vertical smoke evacuation compartment in which the vertical exchanger 2 is disposed. The upper part of this vertical compartment opens into the chimney proper.
  • the vertical exchanger 2 consists of a rectangular sheet metal receptacle 8, one of the dimensions of which is small compared to the other two.
  • the receptacle 8 has at its lower part a water inlet 9 connected to the horizontal exchanger 1 and at its upper part an outlet 10 for hot water.
  • this receptacle; 8 contains vertical conduits 11, the open lower part of which communicates with the combustion chamber compartment 6 and the upper part of which, also open, opens into the chimney proper.
  • These vertical conduits 11 have a square cross section and are arranged in line one next to the other, so as to define between them and with the front and back walls of the receptacle 8, passages 12 of small thickness and of rectangular section ( see figure 2) in which the water to be heated circulates.
  • the vertical conduits 11 are fixed to the side walls of the receptacle 8 made of sheet metal by means of metal studs 13 welded to these walls and to the conduits, thereby ensuring the rigidity necessary for these walls to be able to resist the pressure exerted by water.
  • These metal studs 13 are constituted by discs each welded to two adjacent conduits II and arranged opposite circular holes 14 (see FIG. 4) of the same diameter formed in the opposite front and back walls of the receptacle 8.
  • the weld 15 is produced at the edge of these holes 14 and against the discs 13.
  • the receptacle 8 contains, opposite the lower water inlet 9, a vertical tube 16 for the outlet of hot water, the open upper end 10 of which is located near the upper wall 17 of the receptacle, from which projects beyond the end of the vertical conduits 11.
  • Figures 1 to 3 show on the other hand the horizontal exchanger 1 which comprises a series of parallel tubes 18 placed between a cold water collector 19 and a collector 20 of heated water arranged perpendicular to the receptacle 8 of the vertical exchanger 2.
  • the outlet of the heated water collector 20 is connected to the water inlet 9 located at the bottom of the receptacle 8 of the vertical exchanger 2.
  • the tubes 18 each carry a radial fin 21 forming an angle relative to a vertical plane and directed in the direction (see arrows F) of the circulation of the combustion gases.
  • the two collectors 19 and 20 are constituted by parallelepipedic tanks elongated in sheet metal, fixed on a parallelepipedic compartment 22 also of larger dimensions made of sheet metal, which is open at its upper part and which surrounds the combustion chamber 6 and the ashtray 7.
  • the vertical exchanger 2 of generally parallelepipedal shape rests and is fixed vertically to the ends of the two parallelepipedic tanks constituting the collectors 19 and 20 of the horizontal exchanger 1.
  • the end of the manifold 20 for leaving the horizontal exchanger 1 comprises at ° its upper part an opening which opens directly into the water inlet opening 9 of the receptacle 8 which constitutes the vertical exchanger.
  • the cold water inlet manifold 19 has at its end, to which the receptacle 8 is fixed, a compartment 23 (see FIG. 1) separated by a partition 23a from the rest of the manifold 19, into which the vertical tube 16 of hot water outlet, disposed in the receptacle 8.
  • This compartment 23 presents the lateral tube 4 for the outlet of the hot water which is connected to the central heating installation.
  • FIGS. 1 to 3 It can also be seen in FIGS. 1 to 3 that the two parallelepipedic tanks 19 and 20 constituting the collectors of the horizontal exchanger are joined by bars 5, welded to these tanks, and extending above the tubes 18, these bars 5 forming the grid of the hearth.
  • the two parallelepipedic tanks 19 and 20 are joined by a front plate 24 welded to the ends of these tanks and extending over the entire height thereof.
  • the horizontal exchanger 1 is bordered laterally and frontally (see FIG. 6) by removable glass walls (25, 26, 27) which extend over a certain height (10 to 20 cm) above the grid 5. These walls also constitute a stop for the logs which are placed on this grid.
  • the walls 25, 26, 27 can be replaced by removable walls 28, 29, 30 (see FIG. 7) extending practically to the lower edge 31 of the chimney hood 32.
  • the front wall 29 is advantageously divided into two hinged panels forming access doors to the foyer.
  • the hood 32 disposed above the heat recovery unit, comprises a partition 33 extending substantially vertically over part of the height of this hood 32.
  • This partition 33 is disposed substantially parallel to the dorsal face 34 of the hood 32 and separates the latter into two conduits 35, 36, one 35 serving for operation in reverse draft and the other 36 for operation in normal draft (see FIG. 8).
  • This hood 32 further comprises in its upper part a narrowing 37 defining the outlet duct of the hood.
  • the hood 32 includes a single register 38 pivotally mounted at the end 33a of the partition 33, so that it can be moved between a position in which it closes the conduit for normal draft (position shown in solid line in Figure 8) and opens the one used for reverse pulling and a position in which, conversely, it opens the conduit for normal draw and closes the one used for reverse pulling (position in dotted line in the figure 8).
  • the register 38 In the first position, the register 38 bears against the base of the narrowing 37 of the hood, while in the second position, the register 38 bears against the dorsal face 34 of the hood.
  • the register 38 has a very simple rectangular form of embodiment, its lateral edges conforming to the partial vertical profile of the lateral walls of the hood 32. This register 38 therefore allows the intensity of the normal draw and that of the reverse draw to be adjusted as desired.
  • the fumes are evacuated towards the chimney by passing through the vertical conduits 11. These absorb the major part of the calories conveyed by the fumes by yielding them by heat exchange to the water contained in the receptacle 8 which surrounds the conduits 11.
  • the water heated in the vertical exchanger 2 is collected at the upper end 10 of the tube 16 and then discharged through the outlet 4 located at the bottom of the vertical exchanger 2.
  • the heat recovery unit of the installation according to the invention is very easy to maintain and clean.
  • the only parts of this recuperator which are liable to become fouled are formed by the interior of the vertical conduits 11.
  • the cleaning of these can be carried out easily, without dismantling, by using the cleaning tool shown in the Figure 10, which is part of the installation according to the invention.
  • this tool comprises a tube 40 ending in an elbow 41 forming an angle of 90 ° with the tube.
  • a flexible rod 42 for example constituted by a helical spring with contiguous turns, is engaged inside the tube 40, and has at its end a cleaning member 44 such as a hedgehog or a brush of dimensions adapted to the section of the vertical conduits 11 of the vertical exchanger 2.
  • the section of the vertical conduits 11 of the vertical exchanger can also be rectangular.
  • This section can moreover be in the shape of any polygon, for example of a hexagon as in the case of the conduits represented in FIG. 5.
  • the hexagons 11a are arranged one next to the other according to the configuration called in "honeycomb" which makes it possible to obtain the largest exchange surface with the surrounding water for a given volume of the exchanger.
  • the exchange surface between the vertical conduits 11 and the surrounding water and between these conduits and the fumes passing inside them could be further increased by having fins inside and outside of these ducts.
  • thermal efficiency of the horizontal exchanger 1 could be further improved by arranging the fins inside the tubes 18, as described for example in French patent application No. 80 15629 filed on July 15, 1980 by the present depositor.
  • thermal regulation of the installation is advantageously carried out by means of a device comprising a thermal probe in contact with the water circulating in the heat recovery unit, this probe automatically controlling the rotation of the damper 38 around its axis to adjust the draw.
EP86400210A 1985-02-05 1986-01-31 Heizungsanlage für offene Kamine mit umgekehrtem Zug Withdrawn EP0193433A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8501569A FR2577019B1 (fr) 1985-02-05 1985-02-05 Installation de chauffage pour cheminee a foyer ouvert et tirage inverse
FR8501569 1985-02-05

Publications (1)

Publication Number Publication Date
EP0193433A1 true EP0193433A1 (de) 1986-09-03

Family

ID=9315940

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86400210A Withdrawn EP0193433A1 (de) 1985-02-05 1986-01-31 Heizungsanlage für offene Kamine mit umgekehrtem Zug

Country Status (3)

Country Link
EP (1) EP0193433A1 (de)
DE (1) DE193433T1 (de)
FR (1) FR2577019B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2397765A1 (de) * 2010-06-10 2011-12-21 E.W.M. Limited Brennstoffbrennofen

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3803623A1 (de) * 1987-03-18 1988-09-29 Anna Wanninger Kachelofen mit wassertherme
DE4415767C2 (de) * 1994-04-29 1996-02-22 Emmanuel Ouranos Kaminofen, zusammengesetzt aus Feuerstelle und mehreren Aufbauten, mit Wasserbehältern

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2505986A1 (fr) * 1981-05-13 1982-11-19 Sirie Jean Cheminee a tirage inverse avec recuperation de calories
FR2552529A1 (fr) * 1983-09-22 1985-03-29 Suderie Michel Recuperateur de chaleur a eau

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2505986A1 (fr) * 1981-05-13 1982-11-19 Sirie Jean Cheminee a tirage inverse avec recuperation de calories
FR2552529A1 (fr) * 1983-09-22 1985-03-29 Suderie Michel Recuperateur de chaleur a eau

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2397765A1 (de) * 2010-06-10 2011-12-21 E.W.M. Limited Brennstoffbrennofen
GB2481049B (en) * 2010-06-10 2016-06-29 Ewm Ltd Fuel-burning stove

Also Published As

Publication number Publication date
FR2577019A1 (fr) 1986-08-08
FR2577019B1 (fr) 1988-07-01
DE193433T1 (de) 1987-01-15

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