EP0337923A2 - Chauffe-eau - Google Patents

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Info

Publication number
EP0337923A2
EP0337923A2 EP89710028A EP89710028A EP0337923A2 EP 0337923 A2 EP0337923 A2 EP 0337923A2 EP 89710028 A EP89710028 A EP 89710028A EP 89710028 A EP89710028 A EP 89710028A EP 0337923 A2 EP0337923 A2 EP 0337923A2
Authority
EP
European Patent Office
Prior art keywords
burner
water heater
heat exchanger
strands
pipe
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
EP89710028A
Other languages
German (de)
English (en)
Other versions
EP0337923A3 (en
EP0337923B1 (fr
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 Austria GmbH
Vaillant GmbH
Vaillant SARL
Vaillant Ltd
Vaillant-Schonewelle BV
Original Assignee
Vaillant Austria GmbH
Vaillant NV
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, Vaillant NV, 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/fr
Publication of EP0337923A3 publication Critical patent/EP0337923A3/de
Application granted granted Critical
Publication of EP0337923B1 publication Critical patent/EP0337923B1/fr
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.
  • the 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 the inflow area approximately the same size as the burner area.
  • the object of the invention is therefore to reduce the thermal load on the elements closer to the burner.
  • this object is achieved in that regions of the heat exchanger, for example pipe strands, which are closer to the burner in the exhaust gas duct are designed and / or arranged with a lower heat absorption capacity than heat exchanger regions which are further away from the burner.
  • the heat exchange elements closer to the burner can consist of pipe strands, preferably steel pipe strands, with a smooth surface, while the heat exchange elements further away from the burner, for example pipe strings, on the other hand have a heat exchange surface which is enlarged by profiles, for example ribs. But you can also profile the pipe strings closer to the burner with ribs that have a smaller height or thickness than the ribs of pipe strings further away from the burner.
  • pipe strings of the heat exchanger preferably steel pipe strands, which are closer to the burner have a smooth surface.
  • a heat exchanger is known from AT-PS 378 422, which has a single-layer coil which is covered with fins in the area of the heat exchanger. Areas lying outside the heat exchanger are formed from smooth tube.
  • the features of claim 2 ensure that the area closer to the burner is designed as a smooth tube without further processing, while the further area of the tube receives fins.
  • tubular strings of the heat exchanger which are further away from the burner have a heat exchange surface which is enlarged by profiling, for example ribs, in a manner known per se.
  • the tube strings that are closer to the burner are profiled with ribs that have a small height or thickness than the ribs that tube strings that are further away from the burner.
  • these radiant heat absorbing elements are provided between a family of pipe strands with a smooth surface and a family of pipe strings with a heat exchange surface enlarged by profiling, for example ribs.
  • the water heater shown in FIGS. 1 and 2 operated with a lint burner 1 and a fan, has a combustion chamber 2 and an exhaust gas duct 3, in which heat exchange elements are arranged; in all the exemplary embodiments, these heat exchange elements are designed as tubular strings of water-carrying coils.
  • 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 CO content of the exhaust gases.
  • These heated rods 7 reach a surface temperature of about 800 to 900 ° C and in this way, as a heat accumulator, prevent the exhaust gases from cooling down too much 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. 3 shows an embodiment variant in which the heat exchange elements closer to the burner 1 consist of tubes 8, the ribs 9 of which have a lower height than the ribs 11 of the tubes 10 further away from the burner. This also achieves the effect sought by the invention.
  • FIG. 5 shows an embodiment variant in which the ceramic rams 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)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Geometry (AREA)
  • Gas Burners (AREA)
  • Cookers (AREA)
  • Resistance Heating (AREA)
  • Thermally Insulated Containers For Foods (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
EP89710028A 1988-04-15 1989-04-17 Chauffe-eau Expired - Lifetime EP0337923B1 (fr)

Applications Claiming Priority (2)

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

Publications (3)

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

Family

ID=3504123

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89710028A Expired - Lifetime EP0337923B1 (fr) 1988-04-15 1989-04-17 Chauffe-eau

Country Status (5)

Country Link
EP (1) EP0337923B1 (fr)
AT (2) AT395268B (fr)
DE (2) DE58902642D1 (fr)
ES (1) ES2037460T3 (fr)
GR (1) GR3006755T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2286237A (en) * 1994-01-14 1995-08-09 Hallam Edmond Finned tube heat exchanger for gas fired boilers.
EP0687870A1 (fr) * 1994-06-15 1995-12-20 Atag Verwarming B.V. Echangeur de chaleur
US6763786B2 (en) * 2001-10-24 2004-07-20 Outokumpu Oyj Equipment for water heater

Families Citing this family (5)

* 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
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
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

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 (fr) * 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
DE2742839A1 (de) * 1977-09-23 1979-04-05 Bosch Gmbh Robert Waermeuebertrager fuer einen gas- oder oelbeheizten durchlauf-wassererhitzer
DE2742854C2 (de) * 1977-09-23 1985-05-02 Robert Bosch Gmbh, 7000 Stuttgart Wassererhitzer mit einem Gas- oder Ölbrenner
FR2524971A1 (fr) * 1982-04-08 1983-10-14 Deleage Philippe Generateur de chauffe modulaire
FR2530320B1 (fr) * 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

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2286237A (en) * 1994-01-14 1995-08-09 Hallam Edmond Finned tube heat exchanger for gas fired boilers.
GB2286237B (en) * 1994-01-14 1998-04-08 Hallam Edmond Heat exchanger
EP0687870A1 (fr) * 1994-06-15 1995-12-20 Atag Verwarming B.V. Echangeur de chaleur
US6763786B2 (en) * 2001-10-24 2004-07-20 Outokumpu Oyj Equipment for water heater

Also Published As

Publication number Publication date
DE3912616A1 (de) 1989-10-26
ATA97788A (de) 1992-03-15
ES2037460T3 (es) 1993-06-16
DE58902642D1 (de) 1992-12-17
AT395268B (de) 1992-11-10
EP0337923A3 (en) 1990-10-31
ATE82381T1 (de) 1992-11-15
EP0337923B1 (fr) 1992-11-11
GR3006755T3 (fr) 1993-06-30

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