EP1256760A1 - Assemblage comprenant un brûleur et son boítier - Google Patents

Assemblage comprenant un brûleur et son boítier Download PDF

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Publication number
EP1256760A1
EP1256760A1 EP02076856A EP02076856A EP1256760A1 EP 1256760 A1 EP1256760 A1 EP 1256760A1 EP 02076856 A EP02076856 A EP 02076856A EP 02076856 A EP02076856 A EP 02076856A EP 1256760 A1 EP1256760 A1 EP 1256760A1
Authority
EP
European Patent Office
Prior art keywords
burner
deck
cap
assembly according
housing
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
EP02076856A
Other languages
German (de)
English (en)
Other versions
EP1256760B1 (fr
Inventor
Johannes Clemens Beukers
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.)
Aluheat BV
Original Assignee
Dejatech Bv
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 Dejatech Bv filed Critical Dejatech Bv
Publication of EP1256760A1 publication Critical patent/EP1256760A1/fr
Application granted granted Critical
Publication of EP1256760B1 publication Critical patent/EP1256760B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2203/00—Gaseous fuel burners
    • F23D2203/10—Flame diffusing means
    • F23D2203/101—Flame diffusing means characterised by surface shape
    • F23D2203/1017—Flame diffusing means characterised by surface shape curved
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2211/00—Thermal dilatation prevention or compensation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D2213/00—Burner manufacture specifications

Definitions

  • the present invention relates to an assembly of a burner and a burner housing.
  • the burner housing comprises a heat exchanger and a burner cap; in the known assembly, the burner comprises a burner deck and a frame.
  • the frame in which the burner deck is mounted is arranged on the burner cap of the known assembly the burner cap of the known assembly.
  • This burner deck is connected with the frame, for instance by means of spot welding.
  • the burner deck is located opposite the heat exchanger to ensure an optimum heat transfer. In fact, the combustion of combustible gases takes place on a side of the burner deck facing the heat exchanger.
  • the burner housing is usually manufactured from a material having a coefficient of thermal expansion that is relatively low with respect to the material of the burner, while, moreover, the wall thickness thereof substantially exceeds that of the burner deck.
  • Both the burner cap and the burner deck are often manufactured from plate-shaped metal. This plate-shaped metal usually has a relatively high coefficient of thermal expansion.
  • the burner deck is provided with perforations through which, in use, gases to be burned, premixed via the burner cap, flow into the combustion space. Moreover, this burner deck expands relatively more than the burner housing and the burner cap because the burner deck is exposed to a higher temperature than the temperature to which the burner housing is exposed. In particular the burner cap is practically not heated.
  • the difference in expansion between the burner deck and the burner cap will even be greater if the burner cap is made as a casting because the cast material has a lower coefficient of expansion than the plate material from which the burner deck is manufactured.
  • the burner cap may, for that matter, be a part of the burner housing that is fixedly cast integral therewith, but may also be made as a separate casting.
  • the difference in expansion is counteracted by the frame manufactured from plate material.
  • the burner deck is subject to heavy wear.
  • the frame between the burner cap and the burner deck may be subject to wear. If necessary, replacement of the burner deck is possible without necessarily requiring replacement of the whole assembly.
  • the burner deck and the frame are mountable in the burner housing and are therefore also demountable for the purpose of, for instance, inspection and replacement.
  • a drawback of such an assembly is that in mounting at least a burner deck and a frame have to be arranged in the burner housing, which involves working hours and therefore labor costs. Such a drawback also prevails if the burner deck and/or the frame have to be replaced.
  • An assembly according to the invention is therefore characterized by the features of claim 1.
  • an assembly according to the invention is further characterized by the features of claim 2.
  • the burner deck can be very rapidly mounted in the burner housing. This saves labor costs. Moreover, the preselected deformation occurring, in use, under the influence of the combustion space is limited only in the positions where the at least one dowel pin is arranged, as a result of the fixation on the burner cap.
  • the or each dowel pin is preferably provided near a longitudinal edge of the burner or, in a mounted assembly, is included in a part enclosed between the burner cap and the heat exchanger in a position where only little deformation occurs.
  • an assembly according to the invention is characterized by the features of claim 3.
  • the burner deck can be fastened on the burner cap even more rapidly and simply since no dowel pin needs to be provided. This saves working hours and labor costs in mounting and replacement. Moreover, the burner deck therefore has more space for deformation. Besides, it is observed that the burner deck can also be mounted on the heat exchanger. When using a heat exchanger manufactured from a casting, the dowel pins can be cast integral therewith, in that case.
  • an assembly according to the invention is further characterized by the features of claim 4.
  • an assembly according to the invention is further characterized by the features of claim 5.
  • an assembly according to the invention is further characterized by the features of claim 6.
  • an assembly according to the invention is further characterized by the features of claim 7.
  • the invention also relates to a burner housing intended for use in an assembly of a burner and a burner housing.
  • the invention also relates to a burner deck intended for use in an assembly of a burner and a burner housing.
  • Fig. 1 shows a burner housing 1 comprising a heat exchanger 2 and a burner cap 3.
  • a burner deck 4 Located between the burner cap 3 and the heat exchanger 2 is a burner deck 4.
  • the burner deck 4 may be fixed on the burner cap 3, for instance with at least one dowel pin (not shown) to be placed in a position 5. However, the burner deck 4 may also be clamped on the burner cap 3 with, for instance, a longitudinal edge (not shown). Between the burner deck 4 and the burner cap 3 a packing 7 is preferably arranged.
  • the burner deck 4 is provided with perforations (not shown) through which the gases to be burned flow from the burner cap into the combustion space 6. In use, the combustion takes place directly on the side of the burner deck 4 facing the heat exchanger 2.
  • the burner deck 4 is preformed such that, in use, it further deforms according to a preselected deformation under the influence of the combustion heat.
  • the burner deck will expand, in use, in the direction of the heat exchanger 2.
  • the surface 10 of the heat exchanger 2 against which the burner deck 4 lies is oriented substantially parallel to the side 11 of the burner deck 4 facing away from the burner cap 3. In the example shown, this side 11 facing away from the burner cap 3 is substantially convex.
  • a side 14 of the burner deck 4 facing the burner cap 3 is concave.
  • a side 12 of the burner cap 3 contacting the burner deck 4 is oriented substantially parallel to the side 14 of the burner deck 4 facing the burner cap 3.
  • the burner deck 4 is preferably provided with a protective, in particular an insulating top layer 13.
  • This top layer 13 comprises a heat-sensitive material to increase the life of the burner deck 4.
  • the material often also has a relatively low coefficient of heat conduction, so that, in use, relatively little produced heat can be lost as a result of heat delivery to the burner deck 4.
  • the burner housing 1 comprises the heat exchanger 2 and the burner cap 3.
  • the burner cap 3 may be arranged separately in the burner housing 1.
  • the burner housing is made as a casting. It will be clear that in that case the manufacture of an assembly 1 comprises the following steps: a) the manufacture of a burner housing, by means of one or more casting processes, comprising at least a heat exchanger 2 and a burner cap 3; and b) the mounting of a burner deck 4 in the burner housing.
  • the burner cap 3 is provided with at least two spatially separated dowel pins designed as hooks 8A, 8B, which are arranged to position the burner deck 4 on the burner cap 3 by means of openings 9A, 9B provided in the burner deck 4.
  • the burner deck 4 is therefore placed on the burner cap 3 such that the hook 8A extends through the opening 9A and the hook 8B extends through the opening 9B.
  • the preformed burner deck is straightened a little so that the opening 9A fits around the top 21A of the hook 8A and the opening 9B fits around the top 21B of the hook 8B.
  • the hooks 8A, 8B are preferably cast integral with a burner cap 3 made as a casting.
  • the manufacture of an assembly 1 comprises the following steps: a) the manufacture of a burner housing 1 by means of one or more casting processes, which comprises at least a heat exchanger 2 and a burner cap 3; and b) the mounting of a burner deck 4 in the burner housing on the burner cap 3.
  • the burner deck 4 may also be slid into a previously provided slot in the burner cap 3.
  • the burner deck 4 may be clamped on the burner cap 3.
  • the direction of this clamping may be both in the plane of the burner deck 4 and perpendicular to the plane of the burner deck 4.
  • the ends of the burner deck 4 are clampingly bent around at least an outwardly extending lip on the burner cap 3.
  • the packing 7 may be provided on the burner deck 4 already during the manufacture of the burner deck 4.
  • the mounting method may be extended by all kinds of steps, including, for instance, the arrangement of a packing 7.
  • the heat exchanger 2 may, for that matter, also be manufactured according to a method in which no use is made of a casting.
  • a heat exchanger 2 may, for instance, also be manufactured from plate material.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gas Burners (AREA)
EP02076856A 2001-05-11 2002-05-10 Assemblage comprenant un brûleur et son boîtier Expired - Lifetime EP1256760B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1018054A NL1018054C2 (nl) 2001-05-11 2001-05-11 Samenstel van een brander en een branderbehuizing.
NL1018054 2001-05-11

Publications (2)

Publication Number Publication Date
EP1256760A1 true EP1256760A1 (fr) 2002-11-13
EP1256760B1 EP1256760B1 (fr) 2007-08-29

Family

ID=19773391

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02076856A Expired - Lifetime EP1256760B1 (fr) 2001-05-11 2002-05-10 Assemblage comprenant un brûleur et son boîtier

Country Status (5)

Country Link
EP (1) EP1256760B1 (fr)
AT (1) ATE371835T1 (fr)
DE (1) DE60222048T2 (fr)
ES (1) ES2290245T3 (fr)
NL (1) NL1018054C2 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0314897A1 (fr) * 1987-10-31 1989-05-10 Ruhrgas Aktiengesellschaft Brûleur à gaz avec prémélange et excès d'air
EP0730127A1 (fr) * 1995-02-28 1996-09-04 Dejatech B.V. Echangeur de chaleur avec chambre de combustion universelle et purgeur de condensat
EP0774623A1 (fr) * 1995-11-17 1997-05-21 Dejatech B.V. Brûleur à surface de sortie segmentée
NL1002251C1 (nl) * 1996-02-05 1997-08-06 Dejatech Bv Kantelbare verwarmingsketel van het niet-condenserende type en warmte- wisselaar voor een dergelijke verwarmingsketel.
DE19724806A1 (de) * 1996-06-11 1997-12-18 Vaillant Joh Gmbh & Co Vollvormischender atmosphärischer Strahlungsbrenner
EP0816758A1 (fr) * 1996-06-10 1998-01-07 N.V. Radson-Alutherm Dispositif de répartition des flammes pour un brûleur d'un appareil à eau chaude
EP0915293A2 (fr) * 1997-11-06 1999-05-12 Robert Bosch Gmbh Brûleur à air soufflé

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0314897A1 (fr) * 1987-10-31 1989-05-10 Ruhrgas Aktiengesellschaft Brûleur à gaz avec prémélange et excès d'air
EP0730127A1 (fr) * 1995-02-28 1996-09-04 Dejatech B.V. Echangeur de chaleur avec chambre de combustion universelle et purgeur de condensat
EP0774623A1 (fr) * 1995-11-17 1997-05-21 Dejatech B.V. Brûleur à surface de sortie segmentée
NL1002251C1 (nl) * 1996-02-05 1997-08-06 Dejatech Bv Kantelbare verwarmingsketel van het niet-condenserende type en warmte- wisselaar voor een dergelijke verwarmingsketel.
EP0816758A1 (fr) * 1996-06-10 1998-01-07 N.V. Radson-Alutherm Dispositif de répartition des flammes pour un brûleur d'un appareil à eau chaude
DE19724806A1 (de) * 1996-06-11 1997-12-18 Vaillant Joh Gmbh & Co Vollvormischender atmosphärischer Strahlungsbrenner
EP0915293A2 (fr) * 1997-11-06 1999-05-12 Robert Bosch Gmbh Brûleur à air soufflé

Also Published As

Publication number Publication date
NL1018054C2 (nl) 2002-11-12
ATE371835T1 (de) 2007-09-15
DE60222048D1 (de) 2007-10-11
ES2290245T3 (es) 2008-02-16
DE60222048T2 (de) 2008-05-21
EP1256760B1 (fr) 2007-08-29

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