EP3141840B1 - Échangeur thermique pour chaudière domestique ou chauffe-eau - Google Patents

Échangeur thermique pour chaudière domestique ou chauffe-eau Download PDF

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Publication number
EP3141840B1
EP3141840B1 EP16187773.3A EP16187773A EP3141840B1 EP 3141840 B1 EP3141840 B1 EP 3141840B1 EP 16187773 A EP16187773 A EP 16187773A EP 3141840 B1 EP3141840 B1 EP 3141840B1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
wing
end wall
clamp
longitudinal axis
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.)
Active
Application number
EP16187773.3A
Other languages
German (de)
English (en)
Other versions
EP3141840A1 (fr
Inventor
Massimo Giacometti
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.)
Riello SpA
Original Assignee
Riello SpA
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 Riello SpA filed Critical Riello SpA
Priority to PL16187773T priority Critical patent/PL3141840T3/pl
Publication of EP3141840A1 publication Critical patent/EP3141840A1/fr
Application granted granted Critical
Publication of EP3141840B1 publication Critical patent/EP3141840B1/fr
Active 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
    • F24H1/43—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes helically or spirally coiled
    • 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
    • F24H9/02—Casings; Cover lids; Ornamental panels
    • 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
    • F24H9/06—Arrangement of mountings or supports for heaters, e.g. boilers, other than space heating radiators
    • 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
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
    • F24H9/1832—Arrangement or mounting of combustion heating means, e.g. grates or burners
    • F24H9/1836—Arrangement or mounting of combustion heating means, e.g. grates or burners using fluid fuel
    • 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
    • F28D21/0007—Water heaters
    • 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
    • F28D7/02—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 helically coiled
    • F28D7/024—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 helically coiled the conduits of only one medium being helically coiled tubes, the coils having a cylindrical configuration
    • 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
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/001—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core
    • F28F9/002—Casings in the form of plate-like arrangements; Frames enclosing a heat exchange core with fastening means for other structures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/007—Auxiliary supports for elements
    • F28F9/013—Auxiliary supports for elements for tubes or tube-assemblies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/007—Auxiliary supports for elements
    • F28F9/013—Auxiliary supports for elements for tubes or tube-assemblies
    • F28F9/0131—Auxiliary supports for elements for tubes or tube-assemblies formed by plates
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/20—Fastening; Joining with threaded elements

Definitions

  • the invention relates to a heat exchanger for a domestic boiler or a water heater.
  • the invention relates to a heat exchanger comprising a casing; and a tubular member, which is wound, in a helix shape, about a given axis, so as to form a plurality of adjacent coils, which are housed inside the casing.
  • the tubular member, wound in a helix shape is flown through by a liquid, usually water, while combustion fumes or, more generically, hot gases containing water vapour flow in the casing to release their heat to the liquid.
  • the coils are spaced apart from one another so as to form an empty space where the combustion fumes can flow.
  • the heat exchanger described above is configured for defining a path for the hot gases extending between the adjacent coils, so as to optimize the heat exchange between the hot gases and the liquid.
  • Documents EP 1,627,190 B1 ; EP 1,600,708 A1 ; EP 1,750,070 A1 ; EP 1,750, 069 A1 ; EP 1,752,718 A1 show some significant examples of condensing heat exchangers used in domestic boilers.
  • Another example of heat exchanger is disclosed in DE 10051219 , which discloses the features of the preamble of claim 1.
  • An object of the invention is to provide a heat exchanger of the type described above, which is easy to be manufactured and to be installed in a domestic boiler or in a water heater.
  • a heat exchanger for a domestic boiler or a water heater comprising a casing, which comprises a lateral wall extending about a longitudinal axis and a first and a second end wall coupled, on opposite sides, to the lateral wall; a tubular member, which is configured for conveying water, and is housed in the casing; and two clamps, each of which is arranged outside the casing, is connected to the first and the second end wall so as to clamp the lateral wall between the first and second end wall; the heat exchanger being characterized in that each clamp is configured for being mounted on a support structure so as to fix the heat exchanger to the support structure.
  • the clamp basically has two functions: on the one hand, it is used to assemble the heat exchanger and, on the other hand, it is used to mount the heat exchanger inside a boiler of a water heater.
  • first and the second end wall have respective annular grooves configured for housing, respectively, the opposite edges of the lateral wall.
  • This configuration makes the assembly of the casing particularly easy, as users simply need to exert, and keep exerting, a force upon the first and the second end wall along the given axis.
  • each clamp is sized so that the first and the second end wall exert a compression force along the longitudinal axis upon the lateral wall.
  • the first end wall has two first anchoring portions and the second end wall has two second anchoring portions, each of which is aligned with a respective first anchoring portion in a direction parallel to the longitudinal axis.
  • each clamp comprises a base; a first and a second wing configured for being connected to the first and second end wall; and a third wing configured for mounting the heat exchanger to the support structure.
  • each clamp is made by folding a metal sheet blank, wherein the first and the third wing are end wings bent at a right angle with respect to the base about respective bending lines, while the second wing is sheared, partly, from the base and bent with respect to the base about a further bend line.
  • the base is parallel to the longitudinal axis, while the bend lines and the further bend line are parallel to each other and transversal to the longitudinal axis.
  • the first, the second and the third wing are preferably bent at a right angle with respect to the base.
  • the first wing has a length longer than the length of the second wing and shorter than the length of the third wing.
  • the first and the second wing are provided with respective holes for the fixing by means of screws, while the third wing is provided with openings, each of which is aligned with a respective hole of the first or the second wing.
  • the different length of the first, the second and the third wing and the opening in the third wing (which is longer) allow an easy access to the screws by means screwdrivers.
  • number 1 indicates, as a whole, a heat exchanger, which, in this specific case, is a condensing heat exchanger for the production of hot water in a domestic boiler or in a water heater, which are not shown in the accompanying Figures.
  • the heat exchanger 1 extends along a longitudinal axis A and comprises a casing 2 with a cylindrical shape; and a tubular member 3, which is partly wound, in a helix shape, about an axis A so as to form coils 4 and two straight end sections, which are not shown in the accompanying Figures, and is housed in the casing 2.
  • the tubular member 3 is obtained through extrusion and is subsequently wound in a helix shape except for two end sections, not shown in the accompanying Figures, which preserve the straight configuration.
  • the casing 2 comprises a lateral wall 5, which has a substantially cylindrical shape and is preferably made of a metal material, such as for example aluminium, or of a plastic material; an end wall 6 with a substantially annular shape and an end wall 7 substantially shaped like a disc.
  • the end walls 6 and 7 are coupled to the lateral wall 5 so as to form the casing 2 and a combustion fumes circulation chamber.
  • the end wall 6 has a central opening 8 and is configured for supporting a burner with a cylindrical shape, not shown in the accompanying Figures, which is partly arranged inside the combustion fumes circulation chamber.
  • the hot fumes are conveyed through the central opening 8.
  • the lateral wall 5 comprises an opening 9 ( Figure 1 ) for the extraction of the combustion fumes and an opening 10 for the extraction of the condensate ( Figure 1 ).
  • the openings 9 and 10 are made along the lateral wall 5.
  • the end walls 6 and 7 comprise respective tubular sections 11 and 12, which are configured for housing the end sections, not show, of the tubular member 3 and, at least partly, respective hydraulic fittings 13 and 14 to connect the tubular member 3 to conduits of a hydraulic circuit, which is not shown herein.
  • the heat exchanger 1 comprises two clamps 15, each of which is arranged outside the casing 2, is connected to the first and the second end wall 6, 7 so as to clamp the lateral wall 5 between the first and second end wall 6, 7, and is configured for being mounted on a support structure 16 so as to fix the heat exchanger to the support structure 16. More in detail.
  • the support structure 16 is part of a bearing framework of the condensing boiler of the water heater.
  • the end walls 6 and 7 have respective annular grooves 17 and 18 configured for housing, respectively, the opposite edges of the lateral wall 5.
  • the clamps 15 are sized so that the end walls 6 and 7 exert a compression force along the longitudinal axis A upon the lateral wall 5.
  • the end wall 6 has two anchoring portions 19 and the end wall 7 has two anchoring portions 20, each of which is aligned with one of the anchoring portions 19 along the given axis A.
  • Each anchoring portion 19 or 20 has two threaded holes 21 to be engaged by screws 22.
  • Each clamp 15 comprises a base 23, which, in use is parallel to the longitudinal axis A; two wings 24 and 25 configured for being connected, respectively, to the end walls 6 and 7; and a third wing 26 configured for mounting the heat exchanger 1 to the support structure 16 ( Figure 2 ).
  • each clamp 15 is made by folding a metal sheet blank, wherein the wings 24 and 26 are end wings bent at a right angle with respect to the base 23 about respective bending lines 27 and 28, while the wing 25 is partly sheared from the base 23, except for a bending line 29 parallel to the bending lines 27 and 28, and subsequently bent at a right angle about the bending line 29.
  • the wing 25 has a length, measured parallel to the bending lines 27, 28 and 29, shorter than the length of the wing 24, which has a length shorter than the length of the wing 26.
  • the wing 24 comprises two holes for the fixing, through screws 22, to the anchoring portion 19.
  • the wing 25 comprises two holes 31 for the fixing to the anchoring portion 20, while the wing 26 has two holes 32 for the fixing to the structure 16.
  • the wing 26 has openings 33 aligned with the holes 30 and openings 34 aligned with the holes 31, so as to allow the screws 22 to be screwed and unscrewed.

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)
  • Geometry (AREA)
  • Details Of Fluid Heaters (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Claims (9)

  1. Echangeur de chaleur pour une chaudière domestique ou un chauffe-eau, l'échangeur de chaleur (1) comprenant une enveloppe (2), qui comprend une paroi latérale (5) s'étendant autour d'un axe longitudinal (A) et une première et une seconde paroi d'extrémité (6, 7) accouplées, sur des côtés opposés, à la paroi latérale (5); un organe tubulaire (3), qui est configuré pour transporter de l'eau, et est logé dans l'enveloppe (2) ; et deux colliers de serrage (15), dont chacun est agencé en dehors de l'enveloppe (2) et est raccordé à la première et à la seconde paroi d'extrémité (6, 7) de façon à enserrer la paroi latérale (5) entre les première et seconde parois d'extrémité (6, 7) ; l'échangeur de chaleur étant caractérisé en ce que chaque collier de serrage est configuré pour être monté sur une structure de support (16) de façon à fixer l'échangeur de chaleur (1) à la structure de support (16).
  2. Echangeur de chaleur selon la revendication 1, dans lequel la première et la seconde paroi d'extrémité (6, 7) ont des gorges annulaires (17, 18) respectives configurées pour loger, respectivement, les bords opposés de la paroi latérale (5).
  3. Echangeur de chaleur selon la revendication 1 ou 2, dans lequel chaque collier de serrage (15) est dimensionné de façon à ce que la première et la seconde paroi d'extrémité (6, 7) exercent une force de compression le long de l'axe longitudinal (A) sur la paroi latérale (5).
  4. Echangeur de chaleur selon l'une quelconque des revendications précédentes, dans lequel la première paroi d'extrémité (6) comporte deux premières portions d'ancrage (19) et la seconde paroi d'extrémité (7) comporte deux secondes portions d'ancrage (20), dont chacune est alignée sur une première portion d'ancrage (19) respective dans une direction parallèle à l'axe longitudinal (A).
  5. Echangeur de chaleur selon l'une quelconque des revendications précédentes, dans lequel chaque collier de serrage (15) comprend une base (23) ; une première et une deuxième aile (24, 25) configurées pour être raccordées aux première et seconde parois d'extrémité (6, 7); et une troisième aile (26) configurée pour monter l'échangeur de chaleur (1) sur la structure de support (16).
  6. Echangeur de chaleur selon la revendication 5, dans lequel chaque collier de serrage (15) est réalisé en pliant un flan de feuille de métal, dans lequel la première et la troisième aile (24, 26) sont des ailes d'extrémité pliées à angle droit par rapport à la base (23) autour des lignes de pliage (27, 28) respectives, tandis que la deuxième aile (25) est cisaillée, en partie, depuis la base (23) et pliée par rapport à la base (23) autour d'une ligne de pliage supplémentaire (29).
  7. Echangeur de chaleur selon la revendication 6, dans lequel la base (23) est parallèle à l'axe longitudinal (A), tandis que les lignes de pliage (27, 28) et la ligne de pliage supplémentaire (29) sont parallèles les unes aux autres et transversales à l'axe longitudinal (A).
  8. Echangeur de chaleur selon l'une quelconque des revendications 5 à 7, dans lequel la première aile (24) a une longueur plus longue que la longueur de la deuxième aile (25) et plus courte que la longueur de la troisième aile (26).
  9. Echangeur de chaleur selon l'une quelconque des revendications 5 à 8, dans lequel la première et la deuxième aile (24, 25) sont pourvues de trous (30, 31) respectifs pour la fixation au moyen de vis (22), tandis que la troisième aile (26) est pourvue d'ouvertures (33, 34) dont chacune est alignée sur un trou (30, 31) respectif de la première ou deuxième aile (24, 25).
EP16187773.3A 2015-09-08 2016-09-08 Échangeur thermique pour chaudière domestique ou chauffe-eau Active EP3141840B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL16187773T PL3141840T3 (pl) 2015-09-08 2016-09-08 Wymiennik ciepła dla domowego kotła lub podgrzewacza wody

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITUB2015A003485A ITUB20153485A1 (it) 2015-09-08 2015-09-08 Scambiatore di calore per una caldaia domestica o uno scaldacqua

Publications (2)

Publication Number Publication Date
EP3141840A1 EP3141840A1 (fr) 2017-03-15
EP3141840B1 true EP3141840B1 (fr) 2019-12-25

Family

ID=54705762

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16187773.3A Active EP3141840B1 (fr) 2015-09-08 2016-09-08 Échangeur thermique pour chaudière domestique ou chauffe-eau

Country Status (4)

Country Link
EP (1) EP3141840B1 (fr)
ES (1) ES2774808T3 (fr)
IT (1) ITUB20153485A1 (fr)
PL (1) PL3141840T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024110263A1 (fr) * 2022-11-23 2024-05-30 Alleima Gmbh Échangeur de chaleur

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111975312B (zh) * 2020-08-06 2022-01-28 四川同一热能设备有限公司 5管单通道热交换器组装生产系统

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Publication number Priority date Publication date Assignee Title
US5967138A (en) * 1998-12-11 1999-10-19 Cacace; Jeffrey Flash suppressor for hot water heater
DE10051219C1 (de) * 2000-10-16 2002-02-28 Viessmann Werke Kg Verfahren zur Umstellung eines Heizkessels von Heizwert- und Brennwertbetrieb und umgekehrt und Heizkessel zu seiner Durchführung
ITMI20030769A1 (it) 2003-04-11 2004-10-12 Riello Spa Scambiatore di calore, metodo di realizzazione di tale scambiatore e caldaia comprendente tale scambiatore.
DE102004005048A1 (de) * 2004-01-30 2005-09-01 Viessmann Werke Gmbh & Co Kg Heizgerät
ITMI20041044A1 (it) 2004-05-25 2004-08-25 Riello Spa Metodo di realizzazione di una caldaia a gas e caldaia a gas cosi'ottenuta
EP1750070B1 (fr) 2005-08-05 2012-05-30 ELBI International S.p.A. Chaudière à gaz avec échangeur de chaleur avec tube à ailettes et procedé de production dudite chaudière à gaz
DK1752718T3 (da) 2005-08-05 2010-10-25 Riello Spa Fremgangsmåde til fremstilling af varmeveksler
PL1750069T3 (pl) 2005-08-05 2013-07-31 Elbi Int Spa Wymiennik ciepła i sposób jego wytwarzania

Non-Patent Citations (1)

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Title
None *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024110263A1 (fr) * 2022-11-23 2024-05-30 Alleima Gmbh Échangeur de chaleur

Also Published As

Publication number Publication date
ES2774808T3 (es) 2020-07-22
EP3141840A1 (fr) 2017-03-15
PL3141840T3 (pl) 2020-08-24
ITUB20153485A1 (it) 2017-03-08

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