EP0333972B1 - Heizgaszugrohr - Google Patents

Heizgaszugrohr Download PDF

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Publication number
EP0333972B1
EP0333972B1 EP89100017A EP89100017A EP0333972B1 EP 0333972 B1 EP0333972 B1 EP 0333972B1 EP 89100017 A EP89100017 A EP 89100017A EP 89100017 A EP89100017 A EP 89100017A EP 0333972 B1 EP0333972 B1 EP 0333972B1
Authority
EP
European Patent Office
Prior art keywords
tube
pipe
gap
pipe according
inner tube
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
EP89100017A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0333972A1 (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 AT89100017T priority Critical patent/ATE67295T1/de
Publication of EP0333972A1 publication Critical patent/EP0333972A1/de
Application granted granted Critical
Publication of EP0333972B1 publication Critical patent/EP0333972B1/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
    • F24H9/001—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
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/003—Multiple wall conduits, e.g. for leak detection

Definitions

  • the invention relates to a heating gas draft tube, which consists of an outer and an inner tube, the outer tube being spaced apart over at least part of its total length in partial areas by circumferential contact deformations on the inner tube.
  • Such a heating gas draft tube is already known from DE-GM 8327692.
  • Such double-walled heating gas draw tubes have proven themselves very well.
  • the reason for the more or less strong cracking noises is the connection between the two tubes, which is practically mechanically firm due to the pressure deformations of the outer tube against the inner tube, which hold the inner tube firmly clamped in the outer tube.
  • the invention is accordingly based on the object of improving the hot gas draft tube of the type mentioned at the beginning in such a way that such cracking noises no longer occur or can be largely reduced.
  • the putty arranged in the gap ensures that the wall of the inner tube which no longer exists and offers condensate protection is replaced, the total expansion which otherwise occurs in a continuous inner tube can be better distributed over the at least two parts of the inner tube and thus counteracting noise. It is essential, as I said, that the specifically created gap between the ends of the two inner tube parts does not simply remain open, which would prevent condensate protection, but this gap is filled with another suitable material that meets the conditions of elasticity, heat resistance and condensate resistance Fulfills.
  • the gap filled with putty can advantageously be covered by a thin sheet metal ring covering the gap.
  • the solution according to the invention is of particular interest for inner tubes which are provided with helically twisted or straight ribs, it being known per se to obtain such ribs by appropriately folding the wall of the inner tube.
  • Such internal ribbing additionally increases the heat absorption of the inner tube and thus also the expansion of the inner tube, which is practically firmly pressed into the outer tube.
  • the aforementioned cover ring for the gap filled with putty is advantageously designed such that the ring is provided at both ends with grooves into which the ends of the ribs of the two adjacent inner tube parts engage with longitudinal play.
  • Such a ring not only fulfills a covering function for the putty sitting in the gap, but with this ring it is also ensured that the rib courses or the ends of the ribs of both finned tube parts are aligned with one another, which is important for problem-free cleaning of such heating gas draw tubes.
  • the intended cover ring for the gap can be used to maintain the gap distance when inserting, and simply in such a way that the ring is provided in the region of its two peripheral edges with two or more small bent stop flags , which ensure the spacing in the assembled state of the two inner tube parts.
  • the first expansion of the two inner tube parts then causes the small flags to bend back, which then simply remain in their bent-back position.
  • Such small flags can also be provided on the rings, which are intended for the spacing of inner finned inner tubes.
  • heating gas draft tube consists in that the ribs folded out of the wall are welded in their gussets on the outer tube side at least over part of their longitudinal extent with longitudinal weld seams.
  • longitudinal weld seams are expediently designed and arranged as so-called drop weld seams, ie the folded inner tube wall is provided with the longitudinal weld seams standing vertically, which permits a very high welding speed and the simultaneous application of several weld seams.
  • the heating gas draft tube according to the invention is explained in more detail below with reference to the drawing of exemplary embodiments.
  • the Schushiyakrohr consists of an outer tube 3 and an inner tube, the outer tube 3 by circumferential contact deformations 3 'is applied to the inner tube 1 in a thermally conductive manner.
  • the direction of flow is indicated by arrows, from which it can also be seen that the contact deformations 3 'are applied over the greater part of the total length of the heating gas draft tube, i.e. where condensation would normally occur.
  • the inflow area of the heating gas draft tube is kept free from such contact deformations 3 '.
  • the inner tube in this heating gas draft tube according to the embodiment consists of three parts, namely the parts 2, 2 ', 2 ⁇ . As can be seen from the enlarged representation according to FIG.
  • FIG. 3 refers to the embodiment shown in FIGS. 1, 2, i.e. one in which the wall 8 of the inner tube is folded into ribs 9 pointing inwards. Irrespective of this, this training, i.e. Gap, putty and ring arrangement can of course also be used for an inner tube that has no internal ribbing, for example.
  • the inner tube part 2 ⁇ according to FIG. 1 could be designed as such a smooth tube on the inflow side.
  • the ring 7 is formed in the sense of FIG. 4, from which it can be seen that that the ring 7 is provided at both ends with grooves 10 into which the ends 11 of the ribs 9 of the two inner tube parts 2, 2 'engage with longitudinal play.
  • This ring designed in this way fulfills two functions, namely firstly the cover of the inserted inner tube 1 into the outer tube 3 in the gap 5 with the putty introduced and secondly the grooves 10 hold the ribs 9 of both tube parts 2, 2 'in alignment with one another .
  • there is a distance between the ends 11 of the ribs 9 and the groove bottoms 10 'in the non-operating state which distance allows the corresponding expansion movements of the pipe parts when the pipe parts 2, 2' are heated and expanded.
  • the ring can also be advantageously designed for this reason such that it is at each end edge area with each at least two spacer tabs 12 is provided.
  • the rings 7 are made of relatively thin sheet metal, the spacer tabs 12 bent against the outer tube 3 are sufficient to maintain the required distance during the insertion of the inner tube into the outer tube.
  • these small spacer tabs 12 can be simply bent upwards during the expansion movement of the inner tube parts 2 'from the end edges of the parts 2, 2', in which position they then remain. As indicated in FIG. 4, this principle of distance keeping can of course also be used for rings in this special embodiment.
  • Fig. 6 the embodiment is illustrated in which the ribs 9 folded from the wall in their outer pipe-side gussets 9 'are welded to longitudinal weld seams 13, which are expediently and advantageously designed and arranged in the sense of rational production as so-called drop weld seams.
  • the pipe is provided in this region in particular with one or more clamping rings 14 which, for example, are simply heated up on the cold pipe and are in contact with one another Apply cooling under tension to the outer tube 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
  • Pipe Accessories (AREA)
  • Thermal Insulation (AREA)
EP89100017A 1988-03-25 1989-01-02 Heizgaszugrohr Expired - Lifetime EP0333972B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89100017T ATE67295T1 (de) 1988-03-25 1989-01-02 Heizgaszugrohr.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3810035A DE3810035C1 (enrdf_load_stackoverflow) 1988-03-25 1988-03-25
DE3810035 1988-03-25

Publications (2)

Publication Number Publication Date
EP0333972A1 EP0333972A1 (de) 1989-09-27
EP0333972B1 true EP0333972B1 (de) 1991-09-11

Family

ID=6350627

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89100017A Expired - Lifetime EP0333972B1 (de) 1988-03-25 1989-01-02 Heizgaszugrohr

Country Status (5)

Country Link
EP (1) EP0333972B1 (enrdf_load_stackoverflow)
AT (1) ATE67295T1 (enrdf_load_stackoverflow)
CA (1) CA1314778C (enrdf_load_stackoverflow)
DE (1) DE3810035C1 (enrdf_load_stackoverflow)
ES (1) ES2025820T3 (enrdf_load_stackoverflow)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8327692U1 (de) * 1983-09-27 1987-04-30 Vießmann, Hans, Dr.h.c., 3559 Battenberg Heizgaszugrohr
DE3425668A1 (de) * 1984-07-12 1986-01-23 Hans Dr.h.c. 3559 Battenberg Vießmann Heizungskessel fuer fluessige oder gasfoermige brennstoffe und fuer insbesondere hoehere leistungsbereiche
DE8531100U1 (de) * 1985-11-04 1987-10-29 Vießmann, Hans, Dr.h.c., 3559 Battenberg Heizgaszugrohr

Also Published As

Publication number Publication date
CA1314778C (en) 1993-03-23
DE3810035C1 (enrdf_load_stackoverflow) 1989-03-23
ATE67295T1 (de) 1991-09-15
ES2025820T3 (es) 1992-04-01
EP0333972A1 (de) 1989-09-27

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