EP0387628A2 - Chaudière - Google Patents

Chaudière Download PDF

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Publication number
EP0387628A2
EP0387628A2 EP90104064A EP90104064A EP0387628A2 EP 0387628 A2 EP0387628 A2 EP 0387628A2 EP 90104064 A EP90104064 A EP 90104064A EP 90104064 A EP90104064 A EP 90104064A EP 0387628 A2 EP0387628 A2 EP 0387628A2
Authority
EP
European Patent Office
Prior art keywords
wall
longitudinal
weld seams
pipe
longitudinal weld
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
EP90104064A
Other languages
German (de)
English (en)
Other versions
EP0387628B1 (fr
EP0387628A3 (fr
Inventor
Hans Dr. Viessmann
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AT90104064T priority Critical patent/ATE83061T1/de
Publication of EP0387628A2 publication Critical patent/EP0387628A2/fr
Publication of EP0387628A3 publication Critical patent/EP0387628A3/fr
Application granted granted Critical
Publication of EP0387628B1 publication Critical patent/EP0387628B1/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
    • F24H1/263—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 with a dry-wall combustion chamber

Definitions

  • the invention relates to a heating boiler for liquid or gaseous fuels according to the preamble of the main claim.
  • Boilers of the type mentioned are known from DE-A-17 78 832.
  • this effect is achieved in that a space is provided between the two walls and this space is sealed.
  • the inner wall is used simultaneously to form longitudinal ribs, namely in such a way that the sheet metal forming the inner wall is folded into longitudinal ribs directed inwards.
  • the invention is therefore based on the object, starting from the boiler of the generic type, to stabilize it while maintaining the advantageous folding principle for the longitudinal ribs by welding without breaking the favorable double wall principle, that is, no, a direct heat transfer allowing thermal conduction to create and with the proviso that the heat transfer should be distributed evenly over the entire circumferential area of the inner wall.
  • This design results in an extraordinarily stable cylindrical body after unfolding, rounding of the folded sheet metal blank and its welding along the tube-side rib folding gusset, which can be inserted easily and preferably by pressing into the outer tube tube, and which is also sufficiently stable against heat stress distortions.
  • the surfaces of the longitudinal weld seams are arranged underneath the outer circumferential surface of the inner wall and delimit a gap with the tubing.
  • the "feet" of the folded longitudinal ribs and thus also the longitudinal weld seams generate significantly larger amounts of heat than in the areas of the inner wall between the longitudinal ribs.
  • a measure that intervenes in the heat transfer conditions of a heating surface does not represent this known design of the heating surface, but this is essential for the design of the boiler according to the invention, for which an advantageous further development is that the longitudinal weld seams in the inflow-side region of the longitudinal ribs, up to the plane reaching the outer circumferential surface, are higher than the longitudinal weld seams that follow in the direction of the trigger. This can be achieved simply by either making the welds thicker or by placing another weld on the first weld in order to reach the required weld height. It is advantageously taken into account with this requirement that the area on the inflow side is known to be less prone to condensate than the area on the outflow side.
  • the inner flank surfaces of the longitudinal ribs are, moreover, formed to be tightly pressed together in order to avoid cavities in the ribs.
  • the pipe line surrounding the inner wall can advantageously be provided in the area on the outlet side with beads that are spaced apart from one another and face the water side, which likewise counteracts the risk of condensate formation.
  • transitions from the inner wall into the rib folds can, moreover, be designed in the form of bevels or bevels, which can easily be accomplished by appropriate design of the folding tools.
  • the stipulation of the special height dimensioning of the longitudinal weld seams is particularly easy to meet, since this results in larger gusset spaces than they would otherwise can be reached by simply bending the sheet at the foot of the respective fold.
  • the longitudinal weld seams are created in the gussets in the form of drop weld seams.
  • the prefolded and cylindrically rounded heating surface is simply set up vertically for welding and covered with several welding torches that run vertically downwards in the gusset areas with the "drop weld seams".
  • very high welding speeds can be achieved in the production of the inner wall designed according to the invention.
  • a two or three-fold offset of the entire welding device in the direction of rotation is sufficient around the longitudinal axis of the cylindrical inner wall to cover all folding gussets with welding seams.
  • the boiler consists of a water-bearing housing 12, which is penetrated by a pipe 6 containing the combustion chamber 13, which is double-walled at least in the fume-side half, in which the inner wall 1 with the inwardly directed, heating gas flues 14, folded longitudinal ribs 8 sits .
  • the parts of no interest here namely the water-carrying housing 12, the burner-side closure 15, the trigger-side closure 16 and the combustion chamber 13 are only indicated by dashed lines.
  • the tube-side rib fold gussets 2 of the inner wall 1 are covered with longitudinal weld seams 3, as can be seen from FIGS. 4 to 6.
  • the rib fold gusset 2 are not simply filled with weld seams, but the surfaces 4 of the longitudinal weld seams 3 are below the outer peripheral surface 5 of the inner wall 1 and arranged with the pipe 6 a gap 2 'delimiting. Furthermore, the inner wall 1 is in heat-conducting contact except for the longitudinal weld seams 3 with the pipe pull 6, in the sense of the aforementioned explanation.
  • the longitudinal weld seams 3 of the longitudinal ribs 8, extending into the plane of the outer peripheral surface 5, are higher than the longitudinal weld seams 3 that follow in the discharge-side direction (area 7 ') 3 and 4, which correspond approximately to the actual conditions with regard to the size of their representation.
  • the inner flank surfaces 9 of the longitudinal ribs 8 are, as well 2 to 4 can be seen, arranged tightly pressed together.
  • transitions 11 from the inner wall 1 into the rib folds 8 can be formed in the form of bevels 12 or bevels 13, as is illustrated in FIGS. 5, 6.
  • the depth of the gusset enlarged in the sense of FIGS. 5, 6 in the highly stressed area 7 can be reduced, so that the weld seams there without changing the welding speed and / or welding material supply with their surface advantageously automatically come to be higher than in the area adjoining in the draw-off direction.

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)
  • Details Of Fluid Heaters (AREA)
  • Incineration Of Waste (AREA)
  • Gas Burners (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)
  • Control Of Steam Boilers And Waste-Gas Boilers (AREA)
EP90104064A 1989-03-11 1990-03-02 Chaudière Expired - Lifetime EP0387628B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90104064T ATE83061T1 (de) 1989-03-11 1990-03-02 Heizungskessel.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3907948A DE3907948A1 (de) 1989-03-11 1989-03-11 Heizkessel
DE3907948 1989-03-11

Publications (3)

Publication Number Publication Date
EP0387628A2 true EP0387628A2 (fr) 1990-09-19
EP0387628A3 EP0387628A3 (fr) 1991-05-15
EP0387628B1 EP0387628B1 (fr) 1992-12-02

Family

ID=6376119

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90104064A Expired - Lifetime EP0387628B1 (fr) 1989-03-11 1990-03-02 Chaudière

Country Status (4)

Country Link
EP (1) EP0387628B1 (fr)
AT (1) ATE83061T1 (fr)
DE (2) DE3907948A1 (fr)
ES (1) ES2036855T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9310296U1 (de) * 1993-07-10 1994-11-10 Vießmann, Hans, Dr., 35088 Battenberg Heizkesselbauelement

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8531100U1 (de) * 1985-11-04 1987-10-29 Vießmann, Hans, Dr.h.c., 3559 Battenberg Heizgaszugrohr

Also Published As

Publication number Publication date
DE59000521D1 (de) 1993-01-14
ATE83061T1 (de) 1992-12-15
ES2036855T3 (es) 1993-06-01
EP0387628B1 (fr) 1992-12-02
DE3907948A1 (de) 1990-09-13
EP0387628A3 (fr) 1991-05-15

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