EP2504632B1 - Echangeur condenseur à double tubage pour chauffer de l'eau et/ou produire de l'eau chaude sanitaire - Google Patents

Echangeur condenseur à double tubage pour chauffer de l'eau et/ou produire de l'eau chaude sanitaire Download PDF

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Publication number
EP2504632B1
EP2504632B1 EP10790690.1A EP10790690A EP2504632B1 EP 2504632 B1 EP2504632 B1 EP 2504632B1 EP 10790690 A EP10790690 A EP 10790690A EP 2504632 B1 EP2504632 B1 EP 2504632B1
Authority
EP
European Patent Office
Prior art keywords
coil
fumes
tubing
exchanger
plain
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
EP10790690.1A
Other languages
German (de)
English (en)
Other versions
EP2504632A2 (fr
Inventor
Marco De Nardis
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.)
Fontecal SpA
Original Assignee
Fontecal 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.)
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Publication date
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Priority to PL10790690T priority Critical patent/PL2504632T3/pl
Publication of EP2504632A2 publication Critical patent/EP2504632A2/fr
Application granted granted Critical
Publication of EP2504632B1 publication Critical patent/EP2504632B1/fr
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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
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/48—Water heaters for central heating incorporating heaters for domestic water
    • F24H1/52—Water heaters for central heating incorporating heaters for domestic water incorporating heat exchangers for domestic water
    • 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
    • F24H1/48—Water heaters for central heating incorporating heaters for domestic water
    • F24H1/52—Water heaters for central heating incorporating heaters for domestic water incorporating heat exchangers for domestic water
    • F24H1/523—Heat exchangers for sanitary water directly heated by the burner
    • 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
    • F28F1/00—Tubular elements; Assemblies of tubular elements
    • F28F1/08—Tubular elements crimped or corrugated in longitudinal section
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2250/00—Arrangements for modifying the flow of the heat exchange media, e.g. flow guiding means; Particular flow patterns
    • F28F2250/10—Particular pattern of flow of the heat exchange media
    • F28F2250/102—Particular pattern of flow of the heat exchange media with change of flow direction

Definitions

  • the present invention relates to a double tubing condensation exchanger for heating water and/or for producing sanitary hot water.
  • the invention relates to a fumes-liquid heat exchanger, permitting obtaining very high energetic efficiency with low specific load loss both on the fumes side and on the liquid side.
  • heat exchangers comprised of plain profile serpentine (without corrugation) is that they cause deposition of liquid due to condensation of combustion products within exchange interspaces for fumes.
  • the Applicant has realised a condensation heat exchanger that can solve the above problem.
  • FR 2494829 A3 describes a double tubing condensation exchanger according to the pre-characterizing portion of claim 1 of the present application.
  • said first coil is arranged inside said second coil.
  • said first coil has a cross section shape so as to conform to the profile of said second coil, particularly a pseudo-pentagonal cross section, or a rectangular cross section shape, or an ovoidal cross section shape.
  • said exchanger is a vertical fume flow exchanger or a horizontal fume flow exchanger.
  • said first and second coils are sized so a to make the relevant thermal carrier fluid reaching substantially the same temperature at the outlet of the exchanger.
  • first figures 1 and 2 it is shown a first embodiment of the heat exchanger according to the invention, generically indicated by reference number 1, according to an arrangement with a mainly vertical flow of products from combustion within the same exchanger 1.
  • Exchanger 1 provides two coiled tubings, respectively a plain tubing 2 and a corrugated tubing 3, concentrically arranged.
  • heat exchanger 1 provides that cold thermal carrier fluid, to be heated, enters within heat exchanger from below, running hydraulically parallel with respect to the two coiled tubings 2, 3 upward.
  • the two tubings 2, 3 have different profiles, and particularly, the inner one 2 being comprised of a plain tubing, with profile shown in figure 4 (or one of the different arrangements shown in figures 5 and 6 ) suitable to be coupled with corrugated tubing 3, so as to realise an optimum thermal exchange, while the outer one 3 is comprised of a flexible corrugated tubing wound as a coil.
  • the two tubings 2, 3 are adjacent to each other, and their profiles couple so as to realise an optimum exchange surface to transfer heat from combustion products to the thermal carrier fluid.
  • combustion fumes arriving from burner 4 go upward (arrows F).
  • Fumes once reached upper bottom 5, are forced to invert their direction, again going down toward lower bottom (not shown) through passages realised between corrugated tubing 3 and plain tubing 2.
  • a direct passage does not exist in this first embodiment between interstices of plain coiled tubing 2 (horizontal passages between spire of plain coil), but all fumes are forced upward and to pass within paths indicated in figure 2 .
  • heat exchanger 1 in a second embodiment providing a horizontal fumes flow.
  • cold thermal carrier fluid to be heated enters within heat exchanger from below (WATER INLET) following a hydraulically parallel path of the two coiled tubings 2, 3 upward.
  • Two coiled tubings 2 have different profiles, and particularly the inner one 2 is comprised of a plain tubing, with profile shown specifically in figure 4 , suitable to be coupled with corrugated tubing so as to realise an optimum heat exchange, while the outer one 3 is comprised of a coiled flexible corrugated tubing.
  • Said coiled tubings 2, 3 are adjacent to each other, and are realised with profiles coupled so as to realise an optimum exchange surface for transferring heat from combustion product to thermal carrier fluid.
  • Both coiled tubings 2, 3 are continuous and have no branches all along heat exchanger length 1, being connected at the bottom with return manifold and above to the inlet manifold (not shown).
  • Thermal exchange mode between gas burner 4, at the top of the combustion chamber, and the two tubings 2, 3, containing thermal carrier fluid, can be so summarised:
  • Plain coiled tubing 2 shown in figures 3 and 4 has a "pseudo-pentagonal" profile, but, as shown in figures 5 and 6 , it can be realised with different profiles (pseudo-rectangular profile, pseudo- ovoidal profile, ecc.).
  • Main function of plain tubing is that of lowering temperature of fumes arriving from combustion process (variable as a function of the kind of comburent employed and of air excess employed) up to a value of about 300°C-400°C, heating thermal carrier fluid circulating within "plain" hydraulic circuit.
  • Specific "pseudo-pentagonal" shape of plain tubing 2 of figure 4 permits an optimum coupling with corrugated tubing 3, obliging warm fumes to lick exchange surfaces of both tubings, so as to obtain maximum fumes/water heat transfer.
  • Combination of plain and corrugated tubings permits obtaining a higher efficiency.
  • System based on new coaxial combination of two coils with a different geometry, respectively comprised of a coil winding of a corrugated tubing 3, and the other one comprised of a coil winding of a plain tubing 2 (with an pseudo-pentagonal, - rectangular or - ovoidal shape, and like) permits an optimum exploitation of heat generated by hydrocarbon combustion.
  • particular fumes path permits an optimum fumes/water exchange, with useful efficiencies higher than those obtained with known solutions.

Claims (3)

  1. Échangeur à condensation à double tube destiné à chauffer de l'eau et/ou à produire de l'eau chaude sanitaire, qui comporte un premier serpentin (2) ayant une surface lisse et un second serpentin (3) ayant une surface ondulée, disposés parallèlement l'un à l'autre, lesdits premier et second serpentins étant enroulés en hélice, dans lequel un fluide caloporteur peut circuler, indépendamment, à l'intérieur desdits premier et second serpentins, ledit premier serpentin pouvant échanger de la chaleur avec des fumées de combustion principalement par rayonnement et par convection, ledit échangeur étant caractérisé en ce que ledit second serpentin est agencé de telle sorte qu'il peut échanger de la chaleur avec les fumées de combustion principalement par condensation.
  2. Échangeur à condensation à double tube selon la revendication 1, caractérisé en ce que ledit premier serpentin est disposé à l'intérieur dudit second serpentin.
  3. Échangeur à condensation à double tube selon une des revendications précédentes, caractérisé en ce que ledit premier serpentin a une forme de section transversale appropriée pour se conformer au profil dudit second serpentin, en particulier une section transversale pseudo pentagonale, une forme de section transversale rectangulaire, ou une forme de section transversale ovoïde.
EP10790690.1A 2009-11-24 2010-11-17 Echangeur condenseur à double tubage pour chauffer de l'eau et/ou produire de l'eau chaude sanitaire Active EP2504632B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL10790690T PL2504632T3 (pl) 2009-11-24 2010-11-17 Wymiennik kondensacyjny z podwójną wężownicą do ogrzewania wody i/lub wytwarzania ciepłej wody sanitarnej

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITRM2009A000614A IT1396729B1 (it) 2009-11-24 2009-11-24 Scambiatore a condensazione a doppia tubazione per riscaldamento di acqua e/o produzione di acqua calda sanitaria .
PCT/IT2010/000459 WO2011064804A2 (fr) 2009-11-24 2010-11-17 Echangeur condenseur à double tubage pour chauffer de l'eau et/ou produire de l'eau chaude sanitaire

Publications (2)

Publication Number Publication Date
EP2504632A2 EP2504632A2 (fr) 2012-10-03
EP2504632B1 true EP2504632B1 (fr) 2015-03-04

Family

ID=42315635

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10790690.1A Active EP2504632B1 (fr) 2009-11-24 2010-11-17 Echangeur condenseur à double tubage pour chauffer de l'eau et/ou produire de l'eau chaude sanitaire

Country Status (7)

Country Link
EP (1) EP2504632B1 (fr)
CN (1) CN102713453B (fr)
ES (1) ES2538392T3 (fr)
HK (1) HK1176394A1 (fr)
IT (2) IT1396729B1 (fr)
PL (1) PL2504632T3 (fr)
WO (1) WO2011064804A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024003957A1 (fr) * 2022-06-27 2024-01-04 Riello S.P.A. Chaudière, en particulier chaudière à condensation, comprenant un échangeur de chaleur

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103940087B (zh) * 2014-04-09 2017-04-05 西安交通大学 一种窄间隙扁圆形双盘管整体冷凝锅炉
US10024603B2 (en) * 2014-11-26 2018-07-17 Riello S.P.A. Double tubing condensation exchanger for heating water and/or for producing sanitary hot water
CA2990138A1 (fr) 2015-06-24 2016-12-29 Riello S.P.A. Profil de tube pour echangeur de chaleur, echangeur de chaleur pour chaudieres a condensation presentant ledit profil, et chaudiere a condensation equipee dudit echangeur de chale ur
IT201700081975A1 (it) * 2017-07-19 2019-01-19 Calini Donatella Un sistema di produzione di energia per turbine a combustione esterna

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2494829A3 (fr) * 1980-11-21 1982-05-28 Ciat Sa Perfectionnements aux echangeurs de temperature du type coaxial
WO2005108875A1 (fr) * 2004-05-11 2005-11-17 Noritz Corporation Échangeur de chaleur et dispositif chauffe-eau

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024003957A1 (fr) * 2022-06-27 2024-01-04 Riello S.P.A. Chaudière, en particulier chaudière à condensation, comprenant un échangeur de chaleur

Also Published As

Publication number Publication date
PL2504632T3 (pl) 2015-10-30
CN102713453B (zh) 2015-05-27
HK1176394A1 (en) 2013-07-26
IT1403750B1 (it) 2013-10-31
ITRM20100599A1 (it) 2011-05-25
IT1396729B1 (it) 2012-12-14
ITRM20090614A1 (it) 2011-05-25
CN102713453A (zh) 2012-10-03
WO2011064804A2 (fr) 2011-06-03
WO2011064804A3 (fr) 2012-05-10
EP2504632A2 (fr) 2012-10-03
ES2538392T3 (es) 2015-06-19

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