EP0337923B1 - Wasserheizer - Google Patents

Wasserheizer Download PDF

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Publication number
EP0337923B1
EP0337923B1 EP89710028A EP89710028A EP0337923B1 EP 0337923 B1 EP0337923 B1 EP 0337923B1 EP 89710028 A EP89710028 A EP 89710028A EP 89710028 A EP89710028 A EP 89710028A EP 0337923 B1 EP0337923 B1 EP 0337923B1
Authority
EP
European Patent Office
Prior art keywords
burner
heat exchanger
elements
water heater
heat
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.)
Expired - Lifetime
Application number
EP89710028A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0337923A3 (en
EP0337923A2 (de
Inventor
Peter Goebel
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.)
Nv Vaillant Sa
Vaillant-Schonewelle BV
Vaillant Austria GmbH
Vaillant GmbH
Vaillant SARL
Vaillant Ltd
Original Assignee
Vaillant Austria GmbH
Nv Vaillant Sa
Joh Vaillant GmbH and Co
Vaillant GmbH
Vaillant SARL
Vaillant Ltd
Vaillant-Schonewelle 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 Vaillant Austria GmbH, Nv Vaillant Sa, Joh Vaillant GmbH and Co, Vaillant GmbH, Vaillant SARL, Vaillant Ltd, Vaillant-Schonewelle BV filed Critical Vaillant Austria GmbH
Publication of EP0337923A2 publication Critical patent/EP0337923A2/de
Publication of EP0337923A3 publication Critical patent/EP0337923A3/de
Application granted granted Critical
Publication of EP0337923B1 publication Critical patent/EP0337923B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
    • F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
    • F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
    • 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
    • F24H1/40—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or 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
    • F24H9/00—Details
    • F24H9/0005—Details for water heaters
    • F24H9/001—Guiding means
    • F24H9/0026—Guiding means in combustion gas channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2215/00—Fins
    • F28F2215/04—Assemblies of fins having different features, e.g. with different fin densities

Definitions

  • the invention relates to a water heater with a surface burner assigned to a combustion chamber, preferably a lint burner, and at least one heat exchanger arranged in the exhaust gas duct of this combustion chamber.
  • Such water heaters are state of the art. Particularly in the case of water heaters with fan-operated surface burners and when using metallic or ceramic burner plates, the proportion of radiation energy in the overall output of the burner is comparatively large.
  • the low visible flame height of such burners opens up the possibility of dimensioning and designing the combustion chamber in a very compact and space-saving manner.
  • this design depends on the ratio of the burner area to that area of the heat exchange elements which is flown by the exhaust gases. It would be desirable to dimension this inflow surface approximately the same size as the burner surface.
  • GB-PS 1 556 709 design the fins in a single-layer heat exchanger so that they have a lower height on the side facing the burner than on the side facing away from the burner.
  • the heat exchanger is designed with ribless pipe strings near the burner, while the pipe strings remote from the burner have ribs which improve the heat absorption capacity.
  • a disadvantage of all of the aforementioned variants is that the intended effect may be too slight under certain circumstances, and moreover it is difficult to predict and cannot be regulated. In addition, no positive impact on pollutant emissions is expected.
  • the object of the invention is therefore to achieve a reduction in the thermal load on the elements closer to the burner, while at the same time reducing the nitrogen oxide formation.
  • this object is achieved in that, in the region of the tube strings of the heat exchanger facing the burner, elements consisting of ceramic material and absorbing radiant heat, for example rods, are arranged running parallel to the tube strands. In addition to the thermal load on the heat exchange tubes near the burner, these measures can also significantly reduce the nitrogen oxide formation of the burner.
  • these elements absorbing radiant heat are provided between a family of pipe strands with a smooth surface and a family of pipe strands with a heat exchange surface enlarged by profiling, for example ribs are.
  • the elements for radiation absorption can, however, also be arranged directly in front of the group of pipe strings which are closer to the burner.
  • the water heater shown in FIGS. 1 and 2 operated with a lint burner 1 and a blower, has a combustion chamber 2 and an exhaust gas duct 3 in which heat exchange elements are arranged; these heat exchange elements are formed as pipe strings of water-bearing coils in all embodiments.
  • Ceramic rods 7 are located between these tube strings 4 and 6.
  • These rods 7 are uncooled guide elements which serve to improve the exhaust gas flow and thus the heat reduction and to reduce the nitrogen oxide content of the exhaust gases.
  • These heated rods 7 reach a surface temperature of approximately 800 to 900 ° C. and in this way prevent the exhaust gases from cooling down too much as heat stores within the water-cooled combustion chamber 2. This improves the burnout in the flow direction of the exhaust gases.
  • the tube strings 4 are advantageously arranged congruently with the tube strands 6, in order thereby to keep part of the radiant heat of the burner 1 from the foremost group of the tube strands 6.
  • FIG. 5 shows an embodiment variant in which the ceramic rods 7 are arranged directly in front of the group of pipe strands 8 closer to the burner 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Geometry (AREA)
  • Gas Burners (AREA)
  • Cookers (AREA)
  • Resistance Heating (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
  • Thermally Insulated Containers For Foods (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
EP89710028A 1988-04-15 1989-04-17 Wasserheizer Expired - Lifetime EP0337923B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0097788A AT395268B (de) 1988-04-15 1988-04-15 Wasserheizer
AT977/88 1988-04-15

Publications (3)

Publication Number Publication Date
EP0337923A2 EP0337923A2 (de) 1989-10-18
EP0337923A3 EP0337923A3 (en) 1990-10-31
EP0337923B1 true EP0337923B1 (de) 1992-11-11

Family

ID=3504123

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89710028A Expired - Lifetime EP0337923B1 (de) 1988-04-15 1989-04-17 Wasserheizer

Country Status (5)

Country Link
EP (1) EP0337923B1 (enrdf_load_stackoverflow)
AT (2) AT395268B (enrdf_load_stackoverflow)
DE (2) DE3912616A1 (enrdf_load_stackoverflow)
ES (1) ES2037460T3 (enrdf_load_stackoverflow)
GR (1) GR3006755T3 (enrdf_load_stackoverflow)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4404596A1 (de) * 1994-02-12 1995-08-17 Interdomo Gmbh & Co Wärmetauscher mit beschichteten Rohren
GB2286237B (en) * 1994-01-14 1998-04-08 Hallam Edmond Heat exchanger
DE4410716A1 (de) * 1994-02-12 1995-08-17 Interdomo Gmbh & Co Wärmetauscher mit lamellenfreier erster Rohrreihe
DE4406030C2 (de) * 1994-02-24 1997-12-18 Buderus Heiztechnik Gmbh Brennwertkessel
NL9400980A (nl) * 1994-06-15 1996-01-02 Atag Verwarming Bv Warmtewisselaar.
DE19529559A1 (de) * 1995-08-11 1997-02-13 Wieland Werke Ag Wärmeaustauschsystem zur Wassererwärmung
DE19723727A1 (de) * 1997-05-31 1998-12-03 Vaillant Joh Gmbh & Co Lamellenwärmetauscher
FI111411B (fi) * 2001-10-24 2003-07-15 Outokumpu Oy Laite vedenlämmittimeen

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT250409B (de) * 1962-05-17 1966-11-10 Waagner Biro Ag Wärmetauscher, insbesondere für druckgefeuerte Dampfkessel
NL6912511A (enrdf_load_stackoverflow) * 1969-08-17 1971-02-19
DE7528615U (de) * 1975-09-10 1976-03-04 Robert Bosch Gmbh, 7000 Stuttgart Wassererhitzer mit einem atmosphaerischen brenner fuer gasfoermige oder fluessige brennstoffe
DE2742854C2 (de) * 1977-09-23 1985-05-02 Robert Bosch Gmbh, 7000 Stuttgart Wassererhitzer mit einem Gas- oder Ölbrenner
DE2742839A1 (de) * 1977-09-23 1979-04-05 Bosch Gmbh Robert Waermeuebertrager fuer einen gas- oder oelbeheizten durchlauf-wassererhitzer
FR2524971A1 (fr) * 1982-04-08 1983-10-14 Deleage Philippe Generateur de chauffe modulaire
FR2530320B1 (enrdf_load_stackoverflow) * 1982-07-19 1984-12-21 Fives Cail Babcock
DE3413712A1 (de) * 1984-04-12 1985-10-17 Wen Chuan Fengshan City Taiwan Yuan Waermetauscherrohr und verfahren zu seiner herstellung

Also Published As

Publication number Publication date
ATE82381T1 (de) 1992-11-15
AT395268B (de) 1992-11-10
DE58902642D1 (de) 1992-12-17
GR3006755T3 (enrdf_load_stackoverflow) 1993-06-30
DE3912616A1 (de) 1989-10-26
EP0337923A3 (en) 1990-10-31
ATA97788A (de) 1992-03-15
EP0337923A2 (de) 1989-10-18
ES2037460T3 (es) 1993-06-16

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