EP0488096B1 - Echangeur de chaleur à tubes - Google Patents

Echangeur de chaleur à tubes Download PDF

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Publication number
EP0488096B1
EP0488096B1 EP91120033A EP91120033A EP0488096B1 EP 0488096 B1 EP0488096 B1 EP 0488096B1 EP 91120033 A EP91120033 A EP 91120033A EP 91120033 A EP91120033 A EP 91120033A EP 0488096 B1 EP0488096 B1 EP 0488096B1
Authority
EP
European Patent Office
Prior art keywords
tubes
exchanger according
projection members
tube
condensate
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
EP91120033A
Other languages
German (de)
English (en)
Other versions
EP0488096A1 (fr
Inventor
Richard Vetter
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
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AT91120033T priority Critical patent/ATE100932T1/de
Publication of EP0488096A1 publication Critical patent/EP0488096A1/fr
Application granted granted Critical
Publication of EP0488096B1 publication Critical patent/EP0488096B1/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
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
    • F28D21/0005—Recuperative heat exchangers the heat being recuperated from exhaust gases for domestic or space-heating systems
    • F28D21/0008—Air heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28B—STEAM OR VAPOUR CONDENSERS
    • F28B9/00—Auxiliary systems, arrangements, or devices
    • F28B9/08—Auxiliary systems, arrangements, or devices for collecting and removing condensate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/08—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/08—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag
    • F28D7/082—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration
    • F28D7/085—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being otherwise bent, e.g. in a serpentine or zig-zag with serpentine or zig-zag configuration in the form of parallel conduits coupled by bent portions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/06—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media
    • F28F13/08—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by affecting the pattern of flow of the heat-exchange media by varying the cross-section of the flow channels

Definitions

  • the invention relates to a tube heat exchanger in which the combustion gases flow through the tubes and there is air on the outside of the tubes, in particular heat exchangers for cooling the combustion gases from boiler systems and / or for preheating the combustion air from boiler systems.
  • condensation cannot usually be ruled out in heat exchangers of the type mentioned at the outset, provided a certain temperature gradient is not ruled out, care has always been taken to ensure that the condensate runs off.
  • condensate traps are used, which are located in the bottom of the heat exchanger on which the condensate collects.
  • the invention is based on the knowledge that a condensate accumulation can be used if the heat exchanger is given a specific design. Accordingly, the invention is based on the object of designing the exchangers mentioned at the outset in such a way that an improved cleaning of the combustion gases and / or heat storage is possible through a conscious accumulation of condensate.
  • At least one tube inside the tube has one or more dam-like projections that reduce its clear passage cross-section and / or an inclined rise and that the tube or the pipes are inclined toward the projections and / or inclined rises .
  • the condensate is deliberately not discharged, but at least collected or stowed at one point, these collections preferably extending essentially over the entire length of the horizontal or inclined pipe sections.
  • the condensate that accumulates can then be used as a heat accumulator and heat the air touching the pipes.
  • the contact area between the combustion gases and the condensate increases within the pipes, which results in better cleaning of the combustion gases.
  • the protrusions or the elevated point caused by the inclined rise do not prevent the condensate from draining off. If a certain amount of condensate has accumulated, the protrusions or the highest points are overcome, but a reservoir-like accumulation remains.
  • the heat exchanger has a large number of approximately horizontal, one above the other straight pipes 1 made of plastic; Adjacent, one above the other pipes 1 go over 18o ° - elbow 2 into each other in such a way that combustion gases supplied from above in the direction of arrow 3 are passed back and forth at a temperature of about 6o ° C through the heat exchanger, which they below in Leave the direction of arrow 4 with a temperature of about 4o O C.
  • the air used to cool the combustion gases is fed in counterflow from below in the direction of arrow 5; it leaves the exchanger in the upper region in the direction of arrow 6. While, according to the embodiment according to the drawing, the cooling air is guided in counterflow to the combustion gases, it can also be guided and directed transversely to the tubes 1 in other embodiments.
  • the tubes 1, viewed in the flow direction of the combustion gases, are provided in the end region with a projection in the manner of a small dam in the lower floor region;
  • small plastic molded bodies 7 are glued into the tubes according to FIGS. 2 and 3 or fastened in another way. They have a T-shaped cross section in such a way that the vertical cross bar 8 forms the actual dam or projection.
  • the greatest height h should be 1o - 5o% of the inside diameter of the pipe.
  • the condensate from the combustion gases collects on the bottom of the tubes 1, a corresponding, flat liquid accumulation being formed.
  • the free condensate surface thus created serves to better influence the combustion gases;
  • thermal energy is stored that can be passed on to the outside air, which e.g. is of great importance when the air is fed to the boiler or furnace from which the combustion gases to be cooled come.
  • the attachment of the plastic molded body 7 at the ends of the tubes 1 is simple because the elbow 2 and tubes 1 are plugged together. There is a socket connection as a plug connection with an O-ring seal.
  • the condensate Due to the tempered flue gases, the condensate is at a correspondingly high temperature. Therefore, it is also possible to use the heat exchanger according to the invention as a radiator, primarily by using the heat stored in the condensate.
  • the radiator designed in this way is preferably used for space heating.
  • the heat exchanger can also be used to preheat the combustion air for a boiler system, with the effect of lowering the temperature of the combustion gases.
  • the tubes 2 lie one above the other; they are inclined so that condensate can also accumulate.
  • the inclination of adjacent tubes 2 is in opposite directions, in such a way that their mutual distance - when viewed in the direction of tubes 1 - is greater in the area of the elbows 2 than at the opposite end (B greater than A) (in tubes 1 and elbows 2 with practically the same diameter dimensions).
  • the condensate is indicated at K.
  • 5 and 6 provides pipes 1o, which are laid back and forth, but are practically in a horizontal plane.
  • Their inlet section 11 is downward towards the pipes 1o and the outlet region 12 of the pipes 1o is inclined upward from the pipes 1o, in order to enable the condensate to accumulate over the entire length of the pipes 1o.
  • the inclination of the pipe sections 12 is advantageously chosen to be so small that the condensate can flow through them before the pipe sections 1o completely fill with the condensate and thereby even close the heat exchanger.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Claims (11)

  1. Échangeur de chaleur tubulaire, dans lequel les tubes sont parcourus par des gaz de combustion et de l'air se trouve à l'extérieur des tubes, notamment échangeur de chaleur pour refroidir les gaz de combustion de chaudières et/ou pour préchauffer l'air de combustion de chaudières, caractérisé en ce qu'au moins un tube (1) comporte, à l'intérieur, une ou plusieurs saillies (7) analogues à un barrage et/ou une rampe inclinée diminuant sa section transversale de passage, et en ce que le tube ou les tubes sont inclinés vers les saillies et/ou les rampes inclinées.
  2. Échangeur suivant la revendication 1, caractérisé en ce que les saillies (7) se trouvent, aux extrémités des tubes (1), tournées vers les coudes (2).
  3. Échangeur suivant la revendication 1, caractérisé en ce que les saillies (7) sont des pièces montées ultérieurement dans les tubes (1) et qui y sont fixées.
  4. Échangeur suivant la revendication 3, caractérisé en ce que les saillies (7) sont munies d'un pied élargi, par lequel elles touchent la face intérieure des tubes (1).
  5. Échangeur suivant la revendication 1, caractérisé en ce que la hauteur (h) (la plus grande) des saillies représente de 10 à 50 % du diamètre intérieur des tubes (1).
  6. Échangeur suivant la revendication 3, caractérisé en ce que les saillies (7) sont collées.
  7. Échangeur suivant la revendication 1 ou 6, caractérisé en ce que les tubes ou les saillies sont des pièces en matière plastique.
  8. Échangeur suivant la revendication 1, caractérisé en ce que les tubes (1) et les coudes (2) sont maintenus ensemble par emmanchement à la manière de raccords à emboîtement.
  9. Échangeur suivant la revendication 1, caractérisé en ce que la pente maximum des tubes par rapport aux saillies est de 1 cm environ par mètre de longueur du tube.
  10. Échangeur suivant la revendication 1, caractérisé par son utilisation comme corps de chauffe, de préférence comme radiateur.
  11. Échangeur suivant la revendication 1, caractérisé en ce que pour des tubes (10) disposés sensiblement dans un plan horizontal, la partie (12) formant la sortie est inclinée vers le haut, tandis que la partie (11) d'entrée des tubes est, de préférence, inclinée vers le bas en direction des tubes (10).
EP91120033A 1990-11-29 1991-11-23 Echangeur de chaleur à tubes Expired - Lifetime EP0488096B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT91120033T ATE100932T1 (de) 1990-11-29 1991-11-23 Roehrenwaermeaustauscher.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4037986 1990-11-29
DE4037986A DE4037986A1 (de) 1990-11-29 1990-11-29 Roehrenwaermeaustauscher

Publications (2)

Publication Number Publication Date
EP0488096A1 EP0488096A1 (fr) 1992-06-03
EP0488096B1 true EP0488096B1 (fr) 1994-01-26

Family

ID=6419156

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91120033A Expired - Lifetime EP0488096B1 (fr) 1990-11-29 1991-11-23 Echangeur de chaleur à tubes

Country Status (3)

Country Link
EP (1) EP0488096B1 (fr)
AT (1) ATE100932T1 (fr)
DE (2) DE4037986A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4330361A1 (de) * 1993-09-08 1995-03-09 Richard Vetter Röhrenwärmeaustauscher
EP1158255A3 (fr) 2000-05-25 2003-05-07 Ryll Heizungs GmbH Chaudiére
CN101738122B (zh) * 2009-12-14 2011-12-21 杭州沈氏换热器有限公司 一种盘管及具有该盘管的换热器
CN101852566B (zh) * 2010-05-10 2012-01-25 赵春 水平组合相变换热器
CN222813723U (zh) * 2024-02-06 2025-04-29 宁德时代新能源科技股份有限公司 换热管、电池和用电装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE899946C (de) * 1951-06-12 1953-12-17 Borsig Ag Waermeaustauscher mit waagerechten Rohrlagen und kaskadenartigen UEberlaeufen
DE2937477A1 (de) * 1979-09-17 1981-04-02 Günter Prof. Dr.-Ing. 7441 Wolfschlugen Schöll Flacher, aus zwei duennen blechen oder metallfolien bestehender trennwand-waermeaustauscher
EP0027478A1 (fr) * 1979-10-19 1981-04-29 Van der Iest, Sietze Echangeur de chaleur pour la récupération de la chaleur des gaz d'échappement
FR2523710A1 (fr) * 1982-03-17 1983-09-23 Fives Cail Babcock Perfectionnements aux echangeurs de chaleur a tubes
CA1201950A (fr) * 1982-04-05 1986-03-18 Robert C. Brauer Systeme de chauffage par air chaud
GB8307568D0 (en) * 1983-03-18 1983-04-27 Secretary Industry Brit Heat exchangers
US4896411A (en) * 1985-05-02 1990-01-30 Carrier Corporation Method of making a multiple cell condensing heat exchanger
AT391547B (de) * 1987-12-23 1990-10-25 Vaillant Gmbh Abgasfuehrung fuer brennerbeheizte geraete

Also Published As

Publication number Publication date
DE59100950D1 (de) 1994-03-10
ATE100932T1 (de) 1994-02-15
DE4037986A1 (de) 1992-06-04
EP0488096A1 (fr) 1992-06-03

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