EP0994321B1 - Echangeur de chaleur pour chauffe-eau chauffé par combustible - Google Patents

Echangeur de chaleur pour chauffe-eau chauffé par combustible Download PDF

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Publication number
EP0994321B1
EP0994321B1 EP19990120228 EP99120228A EP0994321B1 EP 0994321 B1 EP0994321 B1 EP 0994321B1 EP 19990120228 EP19990120228 EP 19990120228 EP 99120228 A EP99120228 A EP 99120228A EP 0994321 B1 EP0994321 B1 EP 0994321B1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
lamellae
tubes
water
passage
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
EP19990120228
Other languages
German (de)
English (en)
Other versions
EP0994321A2 (fr
EP0994321A3 (fr
Inventor
Ernst Schmidt
Franz Schmuker
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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
Priority claimed from DE29818228U external-priority patent/DE29818228U1/de
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0994321A2 publication Critical patent/EP0994321A2/fr
Publication of EP0994321A3 publication Critical patent/EP0994321A3/fr
Application granted granted Critical
Publication of EP0994321B1 publication Critical patent/EP0994321B1/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
    • F24H1/40—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
    • 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
    • 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
    • F24H1/44—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with combinations of two or more of the types covered by groups F24H1/24 - F24H1/40 , e.g. boilers having a combination of features covered by F24H1/24 - F24H1/40
    • 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
    • F28F1/10—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
    • F28F1/32—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 the means having portions engaging further tubular elements
    • F28F1/325—Fins with openings

Definitions

  • the invention relates to a heat exchanger according to the preamble of the main claim.
  • a heat exchanger is known from GB-A-2 110 811.
  • the fins of the heat exchanger are pushed onto the water-carrying pipes and then z. B. fixed in a vacuum soldering process or by soldering in an H 2 - continuous furnace on the water pipes.
  • Such heat exchangers are produced in large numbers, the soldering processes require additional effort, special furnaces are required in which the soldering process can take place.
  • the inventive design of the slats according to the Features of claim 1 has the advantage that a resilient Press fit of the pipes in the through openings of the fins is realized, resulting in soldering or the like material connection can be largely dispensed with.
  • the Introduce the radially around the circumference of the lamella openings distributed slots does not require an additional one Work step, since this at the same time as the Openings in the slats, e.g. in the so-called speed nut process can be produced.
  • the contact surfaces that the hot combustion gases are directly applied, additionally through a material connection, in particular can be secured by laser welding.
  • the contact surface between the water pipes and the fins of the heat exchanger will be more advantageous Way enlarged in that the through openings with enclosing the pipes and from the lamellar plates pulled out collar are provided.
  • the pipes in the through openings of the fins further advantageous if the collar is one to the axis of the Passage opening inclined course. A further bending in front of the collar ensures that by the pressing process no undefined fault in the area the through opening is created.
  • the conical course of the collar additionally the joining process relieved and the required thermal contact guaranteed.
  • FIG. 1 is a fireplace insert with one in it arranged heat exchanger shown.
  • Figure 2 shows one Partial view of the spacers provided in the slats according to section A-A in Figure 1.
  • Figure 3 shows a partial view along the pipe axis provided in the fins Section B-B in Figure 1 according to the state of the art and
  • Figure 4 is a partial view of the in the lamellae provided pipe axis according to section B-B according to the invention.
  • FIG 1 is a gas heated water heater with a Burner 10, a combustion chamber 12 and a heat exchanger 14 shown.
  • the heat exchanger 14 has several parallel tubes 16 with a round Cross-section that lead to the water to be heated.
  • the Heat exchanger 14 is constructed in several layers, the in a plane extending pipe sections parallel or be successively flowed through by the water to be heated can.
  • a packet of fins 18 sits on the tubes 16, which are spaced apart with a width b. about the gaps 20 that form occur in it combustion gases flowing along in interaction with the water to be heated in the pipes 16 before being used as exhaust gases not cooled the heat exchanger 14 over a Exhaust gas discharge shown.
  • the slats 18 have in the edge region of the Through openings evenly distributed over the circumference Radial slots 22 on the edge area in several Subdivide edge segments 24. These radial slots 22 or the forming edge segments 24 can be in one so-called "speed nut" process together with the Through openings for the water-carrying pipes 16 in be produced in one work step.
  • the size of the in the slats 18 introduced through openings are with matched the diameter of the water-carrying pipes 16 so that the edge segments 24 clamp on the surface of the water pipes 16 sit on ( Figure 3).
  • the closest to the burner 10 are the Edge areas of the through openings of the lamellae 18 additionally provided with a collar 26.
  • this is Slat area with a temperature of approx. 1200 ° C applied.
  • the collar 26 in this area Contact surface or the heat conduction to the water-bearing Tubes 16 enlarged, which ensures a long life of the Connection is also guaranteed in this area.
  • the edge segment area of the first layer of the heat exchanger 14, which is directly exposed to the hot combustion gases, is additionally achieved by laser welding with the connected water-carrying pipe 16. So that will ensures that even in the so-called “dry-fall case", d. H. there is temporarily no water in the tube 16, one good heat-dissipating connection is retained, one local overheating of the heat exchanger 14 prevented.
  • FIG. 4 Another embodiment for realizing a resilient press fit of the tubes 16 in the through openings shows Figure 4.
  • the collar 26 has one to the axis the through opening inclined course 41 so that a conically narrowing through opening is created.
  • An additional one Collar 26 upstream bend 43 ensure that by the pressing process no undefined distortion in the area the through opening is created.
  • spacers 28 are used.
  • the spacers 28 are produced in that in the Slats 18 openings 30 are introduced such that the exhibitions 32 each created at the support adjacent lamella 18.
  • the Diameter of these spacers 28 in the edge areas of the heat exchanger 14 is larger than inside of the heat exchanger 14.
  • the exhibitions 32 contribute a turbulence of the combustion gases, whereby the Efficiency of heat transfer is increased.
  • the one in figure 2 arched exhibitions 32 shown support the Flow diversion or swirling.
  • the combustion chamber 12 of the gas-heated water heater 14 is provided with water-carrying channels 34, the hydraulic with the water-carrying pipes 16 of the heat exchanger 14 are connected.

Claims (4)

  1. Echangeur thermique pour chauffe-eau chauffé par un combustible, comportant des tubes d'alimentation en eau (16) et une série de lamelles (18) traversée par les tubes (16) et dotée d'orifices traversants circulaires pour recevoir les tubes (16), les lamelles (18) formant entre elles des interstices pour le passage des gaz de combustion, et les orifices traversants étant pourvus au moins dans la zone de l'entrée du gaz de combustion au moins en partie de collerettes (26) entourant les tubes (16) et qui en partant des tôles de lamelles sont positionnées de façon serrée sur les tubes (16), les collerettes (26) étant formées dans la zone de bordure de l'orifice traversant,
    caractérisé en ce que
    la zone de bordure des orifices traversants des lamelles (18) est pourvue de fentes radiales (22) partant du centre de l'orifice traversant, réparties sur la périphérie, et qui divisent la zone de bordure de l'orifice traversant en plusieurs segments de bordure (24), et la collerette présente par rapport à l'axe de l'orifice traversant, une inclinaison (41) qui permet un ajustage serré élastique entre les tubes (16) et les tôles de lamelles.
  2. Echangeur thermique selon la revendication 1,
    caractérisé en ce que
    l'inclinaison (41) menant à la surface des lamelles est située avant une courbure (43) inclinée partant de la surface des lamelles et menant vers la collerette (26).
  3. Echangeur thermique selon la revendication 1,
    caractérisé en ce que
    la liaison par combinaison de forces entre les segments de bordure (24) et les tubes d'alimentation en eau (16), dans la zone de l'entrée du gaz de combustion, est en outre garantie par une liaison matérielle, en particulier par une soudure au laser.
  4. Echangeur thermique selon la revendication 1,
    caractérisé en ce que
    les lamelles (18) comportent des saillies (32) servant d'entretoises (28) qui définissent une distance interstitielle (b) entre les lamelles (18).
EP19990120228 1998-10-13 1999-10-11 Echangeur de chaleur pour chauffe-eau chauffé par combustible Expired - Lifetime EP0994321B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE29818228U DE29818228U1 (de) 1998-10-13 1998-10-13 Wärmeübertrager für brennstoffbeheizte Wassererhitzer
DE29818228U 1998-10-13
DE19946604A DE19946604A1 (de) 1998-10-13 1999-09-29 Wärmeübertrager für brennstoffbeheizte Wassererhitzer
DE19946604 1999-09-29

Publications (3)

Publication Number Publication Date
EP0994321A2 EP0994321A2 (fr) 2000-04-19
EP0994321A3 EP0994321A3 (fr) 2000-12-20
EP0994321B1 true EP0994321B1 (fr) 2004-08-18

Family

ID=26055100

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19990120228 Expired - Lifetime EP0994321B1 (fr) 1998-10-13 1999-10-11 Echangeur de chaleur pour chauffe-eau chauffé par combustible

Country Status (1)

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EP (1) EP0994321B1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111108331A (zh) * 2018-09-19 2020-05-05 苏州明志科技股份有限公司 一种铝合金热交换器及其制备方法

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101033927B (zh) * 2007-04-10 2010-12-08 宁波方太厨具有限公司 高效热水器换热片
DE202011102456U1 (de) * 2011-06-24 2011-09-28 Reventa Kunststoffverarbeitung Gmbh & Co. Kg Rippenrohr

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
HU181538B (en) * 1980-03-11 1983-10-28 Energiagazdalkodasi Intezet Turbulent heat exchanger
GB2110811A (en) * 1981-11-28 1983-06-22 Salter & Co Ltd G Finned tube heat exchanger members
GB2146939A (en) * 1983-09-26 1985-05-01 Huetoetechnika Ipari Szoevetke Device for fixing heat-exchanger plates to their carrying pipes
DE29702918U1 (de) * 1996-02-19 1997-04-03 Vaillant Joh Gmbh & Co Lamellenwärmetauscher
DE19626321A1 (de) * 1996-07-01 1998-01-08 Bosch Gmbh Robert Gasbeheizter Umlauf-Wasserheizer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111108331A (zh) * 2018-09-19 2020-05-05 苏州明志科技股份有限公司 一种铝合金热交换器及其制备方法

Also Published As

Publication number Publication date
EP0994321A2 (fr) 2000-04-19
EP0994321A3 (fr) 2000-12-20

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