EP2236952B1 - Dispositif tubulaire pour le transit d'un fluide caloporteur particulièrement pour les échangeurs de chaleur, et un échangeur de chaleur gaz/liquide, particulièrement pour les chaudières, comprenant une série de dispositifs tubulaires - Google Patents

Dispositif tubulaire pour le transit d'un fluide caloporteur particulièrement pour les échangeurs de chaleur, et un échangeur de chaleur gaz/liquide, particulièrement pour les chaudières, comprenant une série de dispositifs tubulaires Download PDF

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Publication number
EP2236952B1
EP2236952B1 EP10158755.8A EP10158755A EP2236952B1 EP 2236952 B1 EP2236952 B1 EP 2236952B1 EP 10158755 A EP10158755 A EP 10158755A EP 2236952 B1 EP2236952 B1 EP 2236952B1
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EP
European Patent Office
Prior art keywords
heat exchange
tube
gas
section
cross
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.)
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Application number
EP10158755.8A
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German (de)
English (en)
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EP2236952A1 (fr
Inventor
Bortolo Zen
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.)
Sari - Stampi Articoli Industriali Di Zen Bortolo
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Sari - Stampi Articoli Industriali Di Zen Bortolo
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Priority to SI201031194A priority Critical patent/SI2236952T1/sl
Publication of EP2236952A1 publication Critical patent/EP2236952A1/fr
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Publication of EP2236952B1 publication Critical patent/EP2236952B1/fr
Priority to HRP20160712TT priority patent/HRP20160712T1/hr
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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
    • F24H1/24—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
    • F24H1/28—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 including one or more furnace or fire tubes
    • F24H1/285—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 including one or more furnace or fire tubes with the fire tubes arranged alongside the combustion chamber
    • 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
    • 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
    • F24H9/0042—Cleaning arrangements
    • 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
    • F28F1/06—Tubular elements of cross-section which is non-circular crimped or corrugated in cross-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
    • 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 present invention refers to a tubular device for the transit of a heat exchange fluid particularly for heat exchangers.
  • the invention also refers to a liquid/gas heat exchanger, particularly for boilers, comprising a series of such tubular devices.
  • Such boilers comprise a passage chamber for a first heat exchange fluid, crossed by passage ducts for a second heat exchange fluid, the particularity of which lies in the fact that at least part of such ducts is provided by a plurality of tubes, each of which has a cross section with a profile that is formed by a plurality of lobes arranged in a substantially radial direction.
  • a heat exchange tube for a heat exchanger is known from US 2 445 471 .
  • the tube has a pleated surface and is provided, inside, with a core that forces gas or fluid passing through the tube into radially outward projecting interstices formed by the pleated outer wall of the tube.
  • US 2 445 471 discloses a tubular device for the transit of a heat exchange fluid, particularly for heat exchangers, comprising a tube that has at least one portion of its cross-section with a profile that is formed by a plurality of lobes arranged in a substantially radial direction, such that it comprises a removable rod-like flow redirection element inserted in the axial space between the blending portions between two successive lobes, and designed to redirect laterally the flow of heat exchange fluid introduced in said tube toward the heat exchange channels of said tube that have a lobate cross-section.
  • the aim of the present invention is to provide a tubular device for the transit of a heat exchange fluid, particularly for heat exchangers, that is capable of overcoming the drawbacks of tubes with a lobar cross section of the known type.
  • an object of the invention is to provide a liquid/gas heat exchanger, particularly for boilers, fitted with a plurality of tubular devices.
  • Another object of the invention is to provide a tubular device in which the gas that crosses it is subjected to a turbulence that improves the heat exchange compared to what can be achieved with tubes of the known type.
  • Another object of the invention is to provide a tubular device that is easy to clean.
  • Another object of the invention is to device a liquid/gas heat exchanger of greater yield than similar exchangers of the known type.
  • a further object of the invention is to provide a tubular device for the transit of a heat exchange fluid, particularly for heat exchangers, and a liquid/gas heat exchanger particularly for boilers, comprising a series of such tubular devices, structurally simple and easy to use, which can be made using known systems and technologies,
  • a liquid/gas heat exchanger particularly for boilers, comprises a passage chamber for a first heat exchange fluid and passage ducts for a second heat exchange fluid, said passage chamber being crossed by said passage ducts, and is characterised in that at least part of said passage ducts are formed by a plurality of tubular devices according to the invention.
  • a tubular device for the transit of a heat exchange fluid, particularly for heat exchangers, according to the invention, is shown in a first embodiment thereof in Figures 1 through 5 , and is designated therein by the reference numeral 10.
  • the tubular device 10 is of the type comprising a tube 11 having a series of tube portions 11a, 11b and following, each of which in cross section 12 ( Figure 4 ) has a profile that is formed by three lobes 13, 14 and 15, arranged in a substantially radial direction.
  • the tubular device 10 comprises a removable rod-like flow redirection element 16 inserted in the axial space between the blending zones 17, 18 and 19 between two successive lobes.
  • the rod-like element 16 is designed to redirect laterally the flow of heat exchange fluid introduced into the tube 11, toward the heat exchange channels 20, 21, 22 of the same tube portion 11a, 11b, 11c and following, of the tube 11 having a lobar cross section.
  • the portions 11a, 11b and following are made in such a way that the cross sections of two successive tube portions 11a, 11b and following are rotated with respect to the axis of the tube 11 by a certain angle, for example 60° as shown by the cross section 12a in Figure 5 , of the tube portion 11b, and with respect to the cross section 12 in Figure 4 , of the tube portion 11a.
  • the rod-like redirection element 16 has a contoured grip end 23, clearly visible in Figure 2 , for the extraction of the rod-like element 16 from the tube 11, for cleaning the tube 11.
  • the tube 11 has a cross section that comprises three lobes 13, 14 and 15 arranged substantially at 120 sexagesimal degrees with respect to each other.
  • lobes in alternative embodiments, can also be different in number.
  • the tube 11 has a rectilinear longitudinal extension, and the portions 11a, 11b and following with a cross section 12 that comprises three lobes alternate with portions 11e, 11f and following with a cross section that is substantially circular, as can be seen in Figures 1 and 2 .
  • the tubular device according to the invention in a second embodiment, not part of the invention, schematically shown in Figure 6 , the tubular device according to the invention, indicated therein with the reference numeral 110, comprises a tube 111 with a cross section that comprises three lobes, with continuous rectilinear longitudinal extension, with no portions having a circular cross section.
  • the corresponding rod-like element 116 with the contoured grip end 123 is schematically shown inside the tube 111.
  • the tube 211 has a helical longitudinal extension.
  • the tube 11, as well as 111 and 211, have end portions 24 and 25 that are substantially cylindrical, and therefore relatively simple to be welded onto.
  • Figure 3 shows a cross section 12b of a first end 24.
  • the tube 11, 111, 211 can easily be obtained by processing involving pressing of a metal tube.
  • the rod-like element 16 and 116 can be obtained from a metal bar.
  • the invention also refers to a liquid/gas heat exchanger, designated in Figures 8 and 9 with the reference numeral 30.
  • the exchanger 30, particularly for boilers for example powered by diesel fuel or by co-generation, comprises a passage chamber 35 for a first heat exchange fluid, crossed by passage ducts 32 for a second heat exchange fluid.
  • Part of such ducts is provided by a plurality of tubular devices 10 or 110 or 210 as described above.
  • the exchanger 30 comprises a main external body 33 containing an intake chamber for the gas 34, which forms, together with the main body 33, the passage chamber 35 for a first heat exchange fluid.
  • the gas intake chamber 34 is surrounded by a series of heat exchange ducts 36, circular in cross section, and by a series of the tubular devices 10.
  • the two series of ducts are arranged on two concentric circumferences.
  • the gas is conveyed from the intake chamber 34 to the ducts 36 with circular cross section by means of a first redirection and exchange bottom 37.
  • the same gas that exits from the ducts 36 with circular cross section is conveyed to the tubular devices 10 by means of an annular chamber 38 surrounding the inlet of the gas intake chamber 34.
  • the exchanger 30 is closed in an upper region by a flange 39 with a hole for the passage of gas, and in a lower region by a second condensation collecting bottom 40 with an inlet 41 for a flue.
  • At least one of the flange 39 and the second bottom 40 is designed to be removed for the extraction of the rod-like redirection elements 16 of the tubular devices 10 for cleaning the tubes 11 thereof.
  • a tubular device in which the gas that crosses it is subjected to a turbulence that improves the heat exchange compared to what can be achieved with tubes of the known type, and consequently a liquid/gas heat exchanger has been devised, particularly for boilers, fitted with a plurality of tubular devices as per the aim of the invention, of improved yield compared to similar exchangers of the known type.
  • tubular device for the transit of a heat exchange fluid, particularly for heat exchangers, and a liquid/gas heat exchanger, particularly for boilers, comprising a series of such tubular devices have been devised, that are structurally simple, easy to use, and can be made using known systems and technologies.

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)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Claims (8)

  1. Dispositif tubulaire (10) pour le transit d'un fluide d'échange de chaleur, en particulier pour des échangeurs de chaleur, comprenant un tube (11) qui comporte une série de parties de tube (11a, 11b, 11c, 11d) chacune avec une section ayant un profil qui est formé par une pluralité de lobes agencés dans une direction sensiblement radiale, chaque lobe définissant un canal d'échange de chaleur (20, 21, 22) de ladite partie de tube (11a, 11b, 11c, 11d), les sections (12, 12a) de deux parties de tube (11a, 11b, 11c, 11d) successives étant tournées l'une par rapport à l'autre par rapport à l'axe du tube d'un certain angle, et le dispositif tubulaire (10) comprenant un élément de redirection d'écoulement similaire à une tige (16) amovible inséré dans l'espace axial entre les parties de mélange (17, 18, 19) entre deux lobes successifs de la section de chaque partie de tube (11a, 11b, 11c, 11d), et conçu pour rediriger latéralement l'écoulement du fluide d'échange de chaleur introduit dans ledit tube (11) vers les canaux d'échange de chaleur (20, 21, 22) des parties de tube (11a, 11b, 11c, 11d).
  2. Dispositif selon la revendication 1, caractérisé en ce que ledit élément de redirection d'écoulement similaire à une tige (16) comporte au moins une extrémité de préhension (23) profilée pour son extraction dudit tube (11).
  3. Dispositif selon les revendications précédentes, caractérisé en ce que lesdites parties de tube (11a, 11b, 11c, 11d) ont chacune une section qui comprend trois lobes (13, 14, 15) agencés sensiblement à 120 degrés sexagésimaux les uns par rapport aux autres.
  4. Dispositif selon les revendications précédentes, caractérisé en ce que ledit tube (111) comporte une extension longitudinale rectiligne.
  5. Dispositif selon les revendications 2, 3 et 4 précédentes, caractérisé en ce que lesdites parties de tube (11a, 11b, 11c, 11d) alternent avec d'autres parties de tube (11e, 11f, 11g) ayant une section transversale qui est sensiblement circulaire.
  6. Echangeur de chaleur liquide/gaz (30), particulièrement pour des chaudières comprenant une chambre de passage (35) pour un premier fluide d'échange de chaleur et des conduits de passage (32) pour un deuxième fluide d'échange de chaleur, ladite chambre de passage (35) étant traversée par lesdits conduits de passage (32), caractérisé en ce qu'au moins une partie desdits conduits de passage (32) est formée par une pluralité de dispositifs tubulaires (10) selon l'une quelconque des revendications 1 à 5.
  7. Echangeur de chaleur selon la revendication 6, caractérisé en ce qu'il comprend un corps externe principal (33), qui contient une chambre d'admission (34) pour ledit deuxième fluide d'échange de chaleur qui est un gaz, qui forme, avec ledit corps principal (33), ladite chambre de passage (35) pour un premier fluide d'échange de chaleur, ladite chambre d'admission (34) pour le gaz étant entourée par lesdits conduits de passage (32) qui sont formés par une série de conduits d'échange de chaleur (36) ayant une section transversale circulaire et par une série desdits dispositifs tubulaires (10), le gaz étant transporté de ladite chambre d'admission (34) vers lesdits conduits d'échange de chaleur (36) ayant une section transversale circulaire au moyen d'une première partie inférieure de redirection et d'échange (37), ledit gaz qui sort desdits conduits d'échange de chaleur (36) ayant une section transversale circulaire étant transporté vers les dispositifs tubulaires (10) au moyen d'une chambre annulaire (38) qui entoure l'entrée de ladite chambre d'admission pour le gaz (34).
  8. Echangeur de chaleur selon la revendication 7, caractérisé en ce qu'il est fermé dans une région supérieure par un rebord (39) avec un trou pour le passage de gaz et dans une région inférieure par une deuxième partie inférieure de collecte de condensation (40) avec une entrée (41) pour un gaz de combustion, au moins l'un dudit rebord (39) et de ladite partie inférieure (40) étant conçu pour être retiré pour l'extraction des éléments de redirection similaires à une tige (16) des dispositifs tubulaires (10) pour le nettoyage du tube (11) de ceux-ci.
EP10158755.8A 2009-03-31 2010-03-31 Dispositif tubulaire pour le transit d'un fluide caloporteur particulièrement pour les échangeurs de chaleur, et un échangeur de chaleur gaz/liquide, particulièrement pour les chaudières, comprenant une série de dispositifs tubulaires Active EP2236952B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SI201031194A SI2236952T1 (sl) 2009-03-31 2010-03-31 Cevasta naprava za prehod fluida za prenos toplote, še zlasti za prenosnike toplote in prenosnik toplote kapljevina/plin, še zlasti za kotle, ki obsegajo niz cevastih naprav
HRP20160712TT HRP20160712T1 (hr) 2009-03-31 2016-06-21 Cijevni uređaj za prolaz tekućine za izmjenu topline osobito za izmjenjivače topline i izmjenjivač topline plin/tekućina, osobito za kotlove, koji sadržava niz cjevastih uređaja

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITPD2009A000071A IT1393847B1 (it) 2009-03-31 2009-03-31 Dispositivo tubolare per il transito di un fluido di scambio termico particolarmente per scambiatori di calore, e scambiatore di calore liquido/aeriforme, particolarmente per caldaie, comprendente una serie di tali dispositivi tubolari

Publications (2)

Publication Number Publication Date
EP2236952A1 EP2236952A1 (fr) 2010-10-06
EP2236952B1 true EP2236952B1 (fr) 2016-03-23

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EP10158755.8A Active EP2236952B1 (fr) 2009-03-31 2010-03-31 Dispositif tubulaire pour le transit d'un fluide caloporteur particulièrement pour les échangeurs de chaleur, et un échangeur de chaleur gaz/liquide, particulièrement pour les chaudières, comprenant une série de dispositifs tubulaires

Country Status (8)

Country Link
EP (1) EP2236952B1 (fr)
DK (1) DK2236952T3 (fr)
ES (1) ES2576989T3 (fr)
HR (1) HRP20160712T1 (fr)
HU (1) HUE030761T2 (fr)
IT (1) IT1393847B1 (fr)
PL (1) PL2236952T3 (fr)
SI (1) SI2236952T1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017207335A1 (de) * 2017-05-02 2018-11-08 Mahle International Gmbh Abgaswärmeübertrager

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013083371A (ja) * 2011-10-06 2013-05-09 Hitachi Industrial Equipment Systems Co Ltd スクリュー圧縮機
CN104913581A (zh) * 2015-05-29 2015-09-16 福州开发区引射低温制冷技术有限公司 一种冻结装置用的铝合金蒸发管
EP3276290B1 (fr) 2016-07-26 2019-10-23 S.A.R.I. - Stampi Articoli Industriali Di Zen Bortolo Dispositif tubulaire permettant le déplacement d'un fluide d'échange de chaleur, particulièrement pour des échangeurs de chaleur
US20210356169A1 (en) * 2020-05-13 2021-11-18 Beckett Thermal Solutions Heat exchanger for water heater

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080029243A1 (en) * 2003-11-25 2008-02-07 O'donnell Michael J Heat exchanger tube with integral restricting and turbulating structure

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2445471A (en) * 1944-05-09 1948-07-20 Salem Engineering Company Heat exchanger
DE1129516B (de) * 1955-10-04 1962-05-17 Andre Huet Roehrenwaermetauscher, dessen Waermeaustauschflaeche aus vielen Paaren gleichachsig ineinander gesteckter Rohre besteht
FR2799276B1 (fr) * 1999-09-16 2001-12-07 Seccacier Chaudiere cylindrique

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080029243A1 (en) * 2003-11-25 2008-02-07 O'donnell Michael J Heat exchanger tube with integral restricting and turbulating structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017207335A1 (de) * 2017-05-02 2018-11-08 Mahle International Gmbh Abgaswärmeübertrager

Also Published As

Publication number Publication date
IT1393847B1 (it) 2012-05-11
PL2236952T3 (pl) 2016-09-30
SI2236952T1 (sl) 2016-07-29
ES2576989T3 (es) 2016-07-12
DK2236952T3 (en) 2016-07-04
HUE030761T2 (en) 2017-05-29
EP2236952A1 (fr) 2010-10-06
HRP20160712T1 (hr) 2016-07-29
ITPD20090071A1 (it) 2010-10-01

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