EP0387584B1 - Heizgaszugrohr - Google Patents

Heizgaszugrohr Download PDF

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Publication number
EP0387584B1
EP0387584B1 EP90103715A EP90103715A EP0387584B1 EP 0387584 B1 EP0387584 B1 EP 0387584B1 EP 90103715 A EP90103715 A EP 90103715A EP 90103715 A EP90103715 A EP 90103715A EP 0387584 B1 EP0387584 B1 EP 0387584B1
Authority
EP
European Patent Office
Prior art keywords
tube
heating gas
tubes
sleeve
heating
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
EP90103715A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0387584A3 (de
EP0387584A2 (de
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 AT90103715T priority Critical patent/ATE83062T1/de
Publication of EP0387584A2 publication Critical patent/EP0387584A2/de
Publication of EP0387584A3 publication Critical patent/EP0387584A3/de
Application granted granted Critical
Publication of EP0387584B1 publication Critical patent/EP0387584B1/de
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
    • F24H9/00—Details
    • F24H9/0005—Details for water heaters
    • F24H9/0036—Dispositions against condensation of combustion products
    • 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 Walkergaszugrohr according to the preamble of the main claim.
  • Hot gas flue pipes of the type mentioned are generally known and are used in a wide variety of boiler designs, but their designs differ fundamentally from boilers for smaller output ranges, which are known to contain all areas carrying heating and flue gas in only one room (e.g. relatively large cylinder). So combustion chamber, deflection chamber, heating gas flues and flue gas collection chamber. In contrast, in the boilers of interest, the secondary heating surfaces or hot gas flues are formed by relatively small-diameter pipes (of the order of about 30 to 80 mm in diameter) which pass through the water-carrying part of the boiler housing essentially horizontally above and / or next to the actual combustion chamber.
  • Heating gas draft tubes formed from an inner and outer tube are also known from DE-A-33 09 930.
  • the pipes are at a relatively large distance from each other, i.e. they enclose an annular gap, which can lead to buckling, particularly of the inner pipe, when exposed to heat.
  • spacer elements between the pipes, while according to DE-A-34 40 006, powdery material with a given thermal conductivity is filled between the double pipes after their assembly. In both cases, however, these measures extend over the entire length of the heating gas pipes.
  • the invention has for its object to improve a Schusteryakrohr of the type mentioned with simple means to the effect that condensation can be countered in the critical area.
  • This inventive measure of incorporating an additional sleeve between the inner and outer tube is as simple as it is effective for preventing condensation in this critical area.
  • very thin sheet metal can advantageously be used for the sleeve, and on the other hand This creates an additional gap, which despite pressing the pipes together in some areas represents an additional barrier for heat transfer insofar as the areas of the inner pipe covered with it cannot cool down as quickly as if there was only one gap.
  • What is essential for the whole is less the additional integration of a thin sleeve, but rather the creation of an additional gap, which, however, can only be imagined as a very fine structural break between adjacent layers of the tubes and the sleeve.
  • the sleeve only with a wall thickness of 0.5 to 1.0 mm, preferably 0.75 mm, with this dimension ultimately only the practical handling of the sleeve being decisive, that is, theoretically, one could also provide an even thinner metal foil for the sleeve, but this would be difficult to handle.
  • the provision according to the invention of introducing an additional sleeve in the exhaust area of the heating gas draft tube is particularly advantageous in that the fold areas on the fin feet are involved in the heat transfer, i.e. for subclaim 3, protection is only provided within the scope of the present invention claimed.
  • the heating gas draft tube according to the invention is explained in more detail below with the aid of the drawing of an exemplary embodiment.
  • Fig. 1 only the area 3 of the heating gas draft tube I of interest, which is of course much longer as a whole, is shown. Also shown is an embodiment of the heating gas draft tube, in which, as can be seen in FIG. 2, the inner tube consists of a sheet metal blank that is folded into longitudinal ribs 6 and rounded into a tube. As can also be seen from FIG. 1, the outer tube 1 is applied in a heat-conducting manner in partial areas 8 by all-round pressing. In the free space between the longitudinal ribs 6, as can also be seen from FIG. 2, there may be a filler 7, which causes the heating gases flowing in the direction of arrow A to flow through the channels 9 delimited by the longitudinal ribs 6.
  • a metallic sleeve 4 is pressed in a heat-conducting manner to both tubes.
  • the wall thickness W of the sleeve 4 can be dimensioned extremely thin, but this is advantageously dimensioned with a wall thickness of approximately 0.75 mm in order not to impair the handling of the sleeve 4.
  • the insertion of the sleeve 4 is absolutely no problem, because it can be inserted between the two tubes 1, 2 before they are pressed.
  • the sleeve 4 or its sheet metal blank 4 ' is advantageously cut in the sense of FIG. 3 and then rounded to the sleeve.
  • This results in a configuration of the heating gas draft tube such that the sleeve 4 is provided with an oblique cut 5 towards the inflow side Z of the tube I and with its longest surface line (in the exemplary embodiment is a whole median strip MS) "below", that is, arranged on the inflow side B.
  • This design of a heating gas draft tube with only two shells and the additional arrangement of a comparatively thin-walled additional sleeve can of course also be used for double-skin heating gas draft tubes if the outer tube is not, as shown in FIG. 1, pressed in parts.

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)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Resistance Heating (AREA)
EP90103715A 1989-03-11 1990-02-26 Heizgaszugrohr Expired - Lifetime EP0387584B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90103715T ATE83062T1 (de) 1989-03-11 1990-02-26 Heizgaszugrohr.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8903022U DE8903022U1 (de) 1989-03-11 1989-03-11 Heizgaszugrohr
DE8903022U 1989-03-11

Publications (3)

Publication Number Publication Date
EP0387584A2 EP0387584A2 (de) 1990-09-19
EP0387584A3 EP0387584A3 (de) 1991-03-13
EP0387584B1 true EP0387584B1 (de) 1992-12-02

Family

ID=6837007

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90103715A Expired - Lifetime EP0387584B1 (de) 1989-03-11 1990-02-26 Heizgaszugrohr

Country Status (4)

Country Link
EP (1) EP0387584B1 (es)
AT (1) ATE83062T1 (es)
DE (2) DE8903022U1 (es)
ES (1) ES2036853T3 (es)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9103302U1 (de) * 1991-03-18 1992-07-23 Vießmann, Hans, Dr., 3559 Battenberg Dreizugheizkessel
DE19511021C2 (de) * 1995-03-28 1998-10-01 Centrotherm Abgastechnik Gmbh Rohrstück für eine Luft-Abgas-Führung
ES2156689B1 (es) 1998-12-11 2002-02-01 Vulcano Sadeca S A Generador de agua caliente para funcionamiento a baja temperatura.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE337324C (de) * 1919-01-14 1921-05-30 Hugo Junkers Schutzvorrichtung an Fluessigkeitserhitzern
DE3205119C2 (de) * 1982-02-12 1985-04-04 Hans Dr.h.c. 3559 Battenberg Vießmann Heizungskessel für flüssige oder gasförmige Brennstoffe
DE3309930A1 (de) * 1983-03-19 1984-09-20 August Brötje GmbH & Co, 2902 Rastede Heizkessel mit einer kesselheizflaeche aus zueinander in einem vorbestimmten abstand angeordneter innen- und aussenschale
DE3440006A1 (de) * 1984-11-02 1986-05-07 Buderus Ag, 6330 Wetzlar Heizungskessel
DE8531100U1 (de) * 1985-11-04 1987-10-29 Vießmann, Hans, Dr.h.c., 3559 Battenberg Heizgaszugrohr

Also Published As

Publication number Publication date
ES2036853T3 (es) 1993-06-01
DE8903022U1 (de) 1990-07-19
DE59000520D1 (de) 1993-01-14
ATE83062T1 (de) 1992-12-15
EP0387584A3 (de) 1991-03-13
EP0387584A2 (de) 1990-09-19

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