EP1361405A2 - Echangeur de chaleur et sa méthode de fabrication - Google Patents

Echangeur de chaleur et sa méthode de fabrication Download PDF

Info

Publication number
EP1361405A2
EP1361405A2 EP03010271A EP03010271A EP1361405A2 EP 1361405 A2 EP1361405 A2 EP 1361405A2 EP 03010271 A EP03010271 A EP 03010271A EP 03010271 A EP03010271 A EP 03010271A EP 1361405 A2 EP1361405 A2 EP 1361405A2
Authority
EP
European Patent Office
Prior art keywords
finned
tubular
connection
seat
protrusions
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.)
Withdrawn
Application number
EP03010271A
Other languages
German (de)
English (en)
Other versions
EP1361405A3 (fr
Inventor
Roberto Padovani
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.)
Comas SpA
Original Assignee
Comas 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 Comas SpA filed Critical Comas SpA
Publication of EP1361405A2 publication Critical patent/EP1361405A2/fr
Publication of EP1361405A3 publication Critical patent/EP1361405A3/fr
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • 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
    • 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
    • F28D7/087—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 assembled in arrays, each array being arranged in the same plane
    • 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
    • F28F1/126—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 consisting of zig-zag shaped fins
    • 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

Definitions

  • the present invention relates to radiators and heat exchangers, and particularly it refers to a heat exchanger device and manufacturing method thereof, for transferring heat from air or gas to a fluid, for instance in wall thermal boilers for domestic use.
  • the known heat exchangers are constituted by a plurality of finned pipes inside which a fluid flows, that must be heated or cooled by the air or gas flow, forced to pass through the interspaces among the fins. These last ones have exchanging surfaces of suitable dimensions in order to absorb by convection the heat from the air or gas and to transfer it, by conduction, to pipes and fluid or vice versa.
  • connection wet seal being determined by the interference at the assemblage of each protrusion inside the following one, can be subject to risks liquid leakage, which may happen because of the seal loosening at the connection areas, due to the heat and mechanical stresses, to which the heat exchanger is subject.
  • Another object of the present invention is to propose a device made of material having a thin wall thickness and almost constant in all the points, in order to achieve a material saving, a weight and dimension reduction with an equal exchanged thermal energy, a diminution of heat inertia and an increase of the heat exchange coefficient.
  • Further object of the present invention is to propose a heat exchanger device and a manufacturing method thereof, which guarantee a perfect hydraulic and/or pneumatic seal even after high thermic and mechanical stresses.
  • Another object is to propose a manufacturing method of the device that allows simplifying and at the same time integrating the production and assemblage processes of the device, requiring a smaller number of manufacturing apparatuses with consequent cost reduction.
  • numeral 1 indicates a heat exchanger device substantially constituted by a plurality of finned elements 2, each of which including a set of tubular protrusions 4, for instance four, each of which having a seat 5 and a connection 6.
  • connection 6 of each tubular protrusion 4 of a finned element 2 is inserted in a corresponding seat 5 of an adjacent finned element 2, in order to form a duct 10 for the fluid passage and a finned pack 11 for the heat exchanger.
  • the inner portion of the seat 5 has tubular shape and is complementary to the external portion of the connection 6, for a precise and firm coupling.
  • the length S 1 of the seat 5 is greater than the length S2 of the connection 6, in such way that in assembled condition A a plain portion 3 of a finned element 2 mates a shoulder means 12 carried out on the connection 6 of an adjacent finned element 2 in assembled condition A.
  • said shoulder means 12 mate a first rounded portion 7, carried out at an inner edge of the seat 5.
  • Each tubular protrusion 4 further has baffle means 15, in order to increase the turbulence of the fluid flow inside the duct 10 and to improve in this way the heat exchange between said fluid and the duct 10 walls.
  • baffle means 15 consist of an annular inner extension of the free edge of the connection 6.
  • the refolded protrusion may consist of a diaphragm mean having a plurality of borders positioned almost orthogonal with respect to the direction of the fluid flow.
  • the tubular protrusions 4 of each finned element 2 have cross section with circular or oval or elliptical or polygonal shape.
  • the ends of the adjacent finned elements 2 are in single body and particularly they are carried out from a continuous strip 20 having undulated or straight edges.
  • Each finned element 2 of the continuous strip 20 has the set of tubular protrusions 4 positioned on the opposite side of the strip 20, with respect to the set of tubular protrusions 4 of the adjacent finned element 2 adjacent.
  • the tubular protrusions 4 are reciprocally connected, by inserting the external connections 6 in the respective inner seats 5 and the finned elements 2 are positioned reciprocally facing and parallel.
  • the tubular protrusions are carried out by continuous drawing process of the strip 20 through dies and counter-dies, provided with a number of punches equal to the number of tubular protrusions 4 of each finned element 2.
  • tubular protrusions 4 are reciprocally blocked through a welding material, which is inserted, for instance by brazing, into the connections between each attack 6 and seat 5.
  • the welding material is inserted in the shape of rods 17 in passage holes 16 carried out on each finned element 2, in proximity of each tubular protrusion 4, in such way that the material can penetrate, by melting, in the connections between the tubular protrusions 4.
  • tubular protrusions 4 allow carrying out ducts 10 for the passage of the liquid to be heated or cooled and mutually connecting the finned element 2, in order to form packs 11 having fins regularly positioned at a mutual constant and very precise distance.
  • heat exchanger devices 1 According to the number of finned element 2 and according to the pitch and number of tubular protrusions 4 of each finned element 2, it is possible to manufacture heat exchanger devices 1 having different dimensions, in order to satisfy the different user demands.
  • FIGS 7 to 9 show a variant of the heat exchanger device in which each portion of the continuous strip 20 has a plurality of auxiliary tubular protrusions 24, fit to carry out, in the assembled condition A of the device 1, a plurality of auxiliary ducts 25 to obtain a further separate hydraulic circuit, for instance for sanitary water.
  • the figures of the exchanger device variant also show connection ducts 18 which join the tubular protrusions 4 of the external finned elements of the finned package 11 to realize a continuous duct for the fluid and they show fittings 19, of known type, for connecting the device 1 to an other apparatus, for instance a circulation pump.
  • the figures 11 and 12 show a further variant of the heat exchanger device in which the adjacent finned element 2, that are in a single body, are carried out, after the drawing process of the tubular protrusions 4, by longitudinally shearing a continuous strip 20, which has a width approximately double with respects to the width of the single finned element 2 of figure 5.
  • two heat exchanger device 1 from a single strip 20 and with finned element 2 having an undulated profile, for instance lower, fit for contacting the heat source and an upper rectilinear profile fit to be licked, for instance, by burnt smokes flowing out.
  • Such finned element 2 with equal dimensions, thus have a greater exchange area with respect to the undulated finned element of figure 2, allowing increasing the exchanger device performance, subtracting a greater quantity of heat from the burnt smokes and lowering the outlet temperature thereof.
  • the manufacturing method of the heat exchanger device 1 of the present invention provides:
  • the method further provides to carry out on each tubular protrusion 4 baffle means 15 and rounded portions, first 7 and second 8, respectively at the inner corner of seat 5 and at the free edge of the connection 6.
  • the method provides to carry out the plurality of tubular protrusions 4, each of which provided with the seat 5, the connection 6, the baffle means 15 and the rounded portions 7, 8, by means of a single drawing on the strip 20.
  • a variant of the manufacturing method of the heat exchanger device 1, provides:
  • said manufacturing method allows producing at the same time two heat exchanger device, using a die having dimensions almost equal to the dimensions of the die used for obtaining the preferred embodiment of the exchanger device. This allows to double the production without modifying the speed of the press, which operates the punch, and to carry out finned element 2 without production of off-cuts, therefore optimizing the strip use.
  • the main advantage of the present invention is that to provide a heat exchanger device and a manufacturing method thereof, including finned elements regularly positioned at mutual constant and very precise distance.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP03010271A 2002-05-07 2003-05-07 Echangeur de chaleur et sa méthode de fabrication Withdrawn EP1361405A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBO20020266 2002-05-07
IT2002BO000266A ITBO20020266A1 (it) 2002-05-07 2002-05-07 Dispositivo scambiatore di calore e relativo metodo di realizzazione

Publications (2)

Publication Number Publication Date
EP1361405A2 true EP1361405A2 (fr) 2003-11-12
EP1361405A3 EP1361405A3 (fr) 2007-05-02

Family

ID=11440112

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03010271A Withdrawn EP1361405A3 (fr) 2002-05-07 2003-05-07 Echangeur de chaleur et sa méthode de fabrication

Country Status (2)

Country Link
EP (1) EP1361405A3 (fr)
IT (1) ITBO20020266A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1739365A1 (fr) * 2005-06-27 2007-01-03 Frog S.r.l./GmbH Chauffage et/ou refroidissement d'une pièce
WO2008037309A1 (fr) * 2006-09-26 2008-04-03 Grenzebach Bsh Gmbh échangeur de chaleur
WO2014002147A1 (fr) * 2012-06-29 2014-01-03 三菱電機株式会社 Procédé pour fabriquer un échangeur de chaleur, échangeur de chaleur et climatiseur

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1558264A (en) * 1975-07-11 1979-12-19 Chausson Usines Sa Method of making heat exchanger bodies

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2212864A (en) * 1937-07-12 1940-08-27 Gen Motors Corp Refrigerating apparatus
FR1180908A (fr) * 1957-08-07 1959-06-10 Ensembles pour la transmission de la chaleur
US3195626A (en) * 1962-07-09 1965-07-20 Gen Motors Corp Heat exchanger
FR2191087B1 (fr) * 1972-07-05 1977-05-13 Delamair Limited
US5318112A (en) * 1993-03-02 1994-06-07 Raditech Ltd. Finned-duct heat exchanger
GB9909663D0 (en) * 1999-04-28 1999-06-23 Pickering Robert Heating arrangement

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1558264A (en) * 1975-07-11 1979-12-19 Chausson Usines Sa Method of making heat exchanger bodies

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1739365A1 (fr) * 2005-06-27 2007-01-03 Frog S.r.l./GmbH Chauffage et/ou refroidissement d'une pièce
WO2008037309A1 (fr) * 2006-09-26 2008-04-03 Grenzebach Bsh Gmbh échangeur de chaleur
WO2014002147A1 (fr) * 2012-06-29 2014-01-03 三菱電機株式会社 Procédé pour fabriquer un échangeur de chaleur, échangeur de chaleur et climatiseur
JPWO2014002147A1 (ja) * 2012-06-29 2016-05-26 三菱電機株式会社 熱交換器の製造方法
US9816761B2 (en) 2012-06-29 2017-11-14 Mitsubishi Electric Corporation Method for manufacturing heat exchanger

Also Published As

Publication number Publication date
EP1361405A3 (fr) 2007-05-02
ITBO20020266A1 (it) 2003-11-07
ITBO20020266A0 (it) 2002-05-07

Similar Documents

Publication Publication Date Title
US11415381B2 (en) Heat exchanger with aluminum tubes rolled into an aluminum tube support
EP1714100B1 (fr) Méthode de production d'un échangeur thermique à ailettes en plaques brasées
US20150300745A1 (en) Counterflow helical heat exchanger
JPH08502811A (ja) 伝熱管
EP2676094B1 (fr) Procédé de fabrication d'un échangeur de chaleur et échangeur de chaleur
KR102336638B1 (ko) 열 순환을 위한 반전 헤더 설계
CZ290645B6 (cs) Způsob výroby ploché teplosměnné trubky
US20120199328A1 (en) Heat Exchanger Comprising a Tubular Element and a Heat Transfer Element
KR102139270B1 (ko) 열풍 오븐
JP7357208B2 (ja) 熱交換器およびこれを備えた温水装置
JPS58221390A (ja) 熱交換器
CZ336097A3 (cs) Výparník
JP3049386B2 (ja) 複合熱交換器
JP6858343B2 (ja) 熱交換器およびこれを備えた給湯装置
EP1361405A2 (fr) Echangeur de chaleur et sa méthode de fabrication
US2820617A (en) Heat exchanger
JP2009150587A (ja) 熱交換器
CN110595248B (zh) 扁管、换热管和换热器以及换热管的制造方法
JP2013011410A (ja) フィンチューブ型熱交換器およびこれを備えた温水装置
KR100740698B1 (ko) 열교환기용 헤더파이프
JPH08170888A (ja) 一体型熱交換器用チューブ
EP3652492B1 (fr) Échangeur de chaleur comprenant des tubes de fluide ayant une première et une seconde paroi intérieure
GB2254687A (en) Heat exchanger
CN219956219U (zh) 换热器以及燃气热水器
CN209588793U (zh) 热交换器

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL LT LV MK

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: COMAS S.P.A.

RIN1 Information on inventor provided before grant (corrected)

Inventor name: PADOVANI, ROBERTO

17P Request for examination filed

Effective date: 20071002

17Q First examination report despatched

Effective date: 20071116

AKX Designation fees paid

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

AXX Extension fees paid

Extension state: MK

Payment date: 20071102

Extension state: LV

Payment date: 20071102

Extension state: LT

Payment date: 20071102

Extension state: AL

Payment date: 20071102

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20111201