EP1519135A2 - Aufbau eines Wärmetauschers - Google Patents

Aufbau eines Wärmetauschers Download PDF

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Publication number
EP1519135A2
EP1519135A2 EP04018161A EP04018161A EP1519135A2 EP 1519135 A2 EP1519135 A2 EP 1519135A2 EP 04018161 A EP04018161 A EP 04018161A EP 04018161 A EP04018161 A EP 04018161A EP 1519135 A2 EP1519135 A2 EP 1519135A2
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
exchanger construction
tubes
construction
level
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Withdrawn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
EP04018161A
Other languages
English (en)
French (fr)
Other versions
EP1519135A3 (de
Inventor
Giandomenico Lovato
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.)
Ferroli SpA
Original Assignee
Ferroli 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 Ferroli SpA filed Critical Ferroli SpA
Publication of EP1519135A2 publication Critical patent/EP1519135A2/de
Publication of EP1519135A3 publication Critical patent/EP1519135A3/de
Withdrawn legal-status Critical Current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
    • 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
    • F28D7/0066—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids
    • 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
    • F28D7/0008—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 for one medium being in heat conductive contact with the conduits for the other medium
    • F28D7/0016—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 for one medium being in heat conductive contact with the conduits for the other medium the conduits for one medium or the conduits for both media being bent
    • 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
    • F28D7/0041—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 for only one medium being tubes having parts touching each other or tubes assembled in panel form
    • 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
    • F28D7/0066—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids
    • F28D7/0083—Multi-circuit heat-exchangers, e.g. integrating different heat exchange sections in the same unit or heat-exchangers for more than two fluids with units having particular arrangement relative to a supplementary heat exchange medium, e.g. with interleaved units or with adjacent units arranged in common flow of supplementary heat exchange medium
    • 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

Definitions

  • the present invention relates to a heat exchanger construction.
  • the inventive heat exchanger construction is provided for conveying or transmitting heat between a primary fluid, in a gaseous status, or in a liquid status, and one or more secondary fluids, also in either a gaseous or liquid status, and being preferably, but not exclusively, designed for use in thermal generators for heating purposes and/or for providing sanitary use hot water and/or for air conditioning and/or heat recovery purposes.
  • heat exchangers are conventionally used in several fields.
  • the aim of the present invention is to provide such a heat exchanger which is improved with respect to prior heat exchangers for the same applications.
  • a main object of the invention is to provide such a heat exchanger construction which allows to arrange several heat exchanger circuits in a single construction, while providing an efficient and full separation of said heat exchanger circuits.
  • Another object of the present invention is to provide such a heat exchanger which can be used in heat generators including burners of an atmospheric, premixed, blown, catalytic type, operating on gaseous, solid and liquid fuels, or heat generators using other he4at sources.
  • Another object of the present invention is to provide such a heat exchanger which can be made of different materials and which can be easily used in different types of heat generators, such as conventional heat generators, condensation heat generators and so on.
  • Yet another object of the present invention is to provide such a heat exchanger which can also be used in heat recovery or refrigerating apparatus.
  • Yet another important object of the present invention is to provide such a heat exchanger allowing to make very compact boiler bodies, with the built-in necessary hydraulic circuits, for heating, sanitary hot water purposes, and for recovering heat from combustion fumes, for refrigerating applications and so on.
  • Yet another important object of the present invention is to provide such a heat exchanger which allows to highly automatize the related making process.
  • a heat exchanger construction characterized in that said heat exchanger construction comprises a plurality of tubular elements, therebetween at least a continuous zig-zag or fretted blade element is arranged, said blade element being made rigid with said tubular elements to provide a heat transmission between a secondary fluid, circulating in the tubular elements, and a primary fluid cross-traversing the tubular element and blade assembly.
  • the heat exchanger construction which has been generally indicated by the reference number 1 comprises, in a basic embodiment thereof shown in figures 1a and 1b, a plurality of heat exchanger tubes 2 having preferably, though not exclusively, a circular, oval, rectangular, flattened and/or contoured configuration, which tubes are preferably, but not exclusively, mutually parallel and therethrough one or more secondary fluids are conveyed.
  • a continuous or discontinuous zig-zag or fretted blade element 3 is arranged in the space between two adjoining tubes.
  • Each said blade element 3 in particular, is made rigid with said tubes contacted thereby by a welding process, or an analogous process, and/or by a mechanical type of coupling, thereby allowing heat to be transmitted between the secondary fluid F2 circulating through the tubes 2, and a primary fluid which is cross-conveyed through the assembly of the tubes 2 and blade elements 3 which cooperate to provide the subject heat exchanger 1.
  • the tubes 2, in particular, can be arranged on several levels, as shown, for example, in figure 2, which shows, by way of an exemplary and not limitative example, three arrangement levels.
  • the heat exchanger forming tubes can also be mutually coupled with a series and/or parallel relationship on each individual level and/or in a series and/or parallel relationship between different levels, or with series/parallel combinations on a single level or between different levels.
  • Figures 3a-8b show some coupling possibilities, given by way of an example and not of limitation, since the subject heat exchanger has been specifically designed for fitting to a very high number of coupling combinations and circuits.
  • Figures 3a-3b show a heat exchanger 101 with heat exchanger tubes 2 coupled in a series relationship, by fitting elements 22, or being formed starting from a single tube, on a single level.
  • FIGS 4a-4b show a heat exchanger 201 with heat exchanger tube 2 coupled in a parallel relationship, by fitting elements 222, on a single level.
  • FIGS 5a-5b show a heat exchanger 301, with heat exchanger tube 2 coupled in a series relationship, by fitting elements 22, or being formed from a single tube, on several levels.
  • Figures 6a-6b show a heat exchanger 401 with tubes 2 coupled in a parallel relationship, by fitting elements 222, on several levels.
  • FIGS. 7a and 7b show an exemplary embodiment of a heat exchanger, generally indicated by the reference number 501, including independent heat exchanger circuits on several levels and with a series coupling relationship.
  • the heat exchanger of the shown embodiment comprises three independent circuits, each arranged on a different level, with a series type of coupling, and being preferably, but not exclusively, traversed by a different secondary fluid.
  • the secondary fluid F2 sequentially passes through the heat exchanger tubes 2 at the first level from the left to the right, with reference to the figures.
  • the secondary fluid F3 sequentially passes through the tubes 2 of the heat exchanger on the middle level from the right to the left, whereas the secondary fluid F4 sequentially passes through the heat exchanger on the third level, from the left to the right.
  • FIGS 8a and 8b show a further exemplary embodiment of a heat exchanger, generally indicated by the reference number 601, with independent circuits arranged on several levels, and with a series and parallel coupling.
  • the heat exchanger of the shown embodiment comprises three independent circuits, each of which being arranged on a different level, i.e. two with a parallel coupling and the other with a series coupling, and each being traversed by a different secondary fluid.
  • the secondary fluid F2 passes in parallel through the tubes of the heat exchanger on the first level.
  • the secondary fluid F3 sequentially passes through the tubes of the heat exchanger on the middle level from the left to the right, whereas the secondary fluid F4 passes in parallel through the tubes of the third level heat exchanger.
  • the heat exchanger according to the present invention can comprise a plurality of mutually independent secondary circuits, with different characteristics and being traversed by different nature and/or purpose fluids, such as, for example, heating water, sanitary water, refrigerating gas, and so on.
  • each secondary circuit can operate in an independent manner from the other secondary circuits: simultaneously with the other, or alternatively with the other, with different or like exchanged powers and fluid flow rates.
  • This feature is such as preventing any mutual polluting of the fluid in all the operating conditions, thereby providing a heat exchanger which is very useful in hygienic parasanitary applications, in which this safety is required.
  • the heat exchanger according to the present invention can be made of different materials, depending on its applications, but, preferably though not exclusively, being made of copper, steel, stainless steel, aluminium, plastics materials, and so on.
  • the invention provides an improved heat exchanger construction, which comprises a lot of advantageous features.
  • the heat exchanger according to the present invention allows to combine a plurality of heat exchanger circuits to form an individual construction, while providing a full separation of the heat exchanger circuits, owing to the provision of the above mentioned double wall, thereby the subject heat exchanger can be advantageously used in boilers, preferably though not exclusively provided for producing hot water for heating purposes and warm water for hygienic-sanitary uses.
  • the specifically designed features of the heat exchanger according to the present invention allow it to be used in heat generators including atmospheric premixed, blown, catalytic burners, operating based on gaseous, solid and liquid fuels, or generators using other heat sources.
  • the possibility of using different materials for making the heat exchanger according to the present invention allow said heat exchanger to be used in different types of generators, such as conventional heat generators, condensation generators, and so on.
  • the heat exchanger according to the present invention can also be used in heat recovery or refrigerating apparatus.
  • the boiler bodies in particular, can be of a very compact construction, with built in hydraulic circuits for heating purposes, providing hot water, recovering heat from combustion fumes, refrigerating purposes, and so on.
  • the heat exchanger circuits are completely independent from one another, both from an operation standpoint and from a heat exchanging capability (flow rates, exchanged powers and so on) standpoint.
  • the inner circuits of the subject heat exchanger furthermore, operate in a very efficient manner, which will allow the subject heat exchanger to be used in condensation boilers for providing sanitary use hot water.
  • prior thermal generators have a sanitary hot water efficiency which is much less than that of the subject heat exchanger.
  • the heat exchanger according to the present invention has a small heat exchanger mass, allowing to greatly reduce its overall thermal inertia, while providing a high speed in responding to thermal load variations and reducing to a minimum undesired thermal leakages.
  • the blade elements associated to the heat exchanger tubes can be made with a very low making waste, since they can be constructed without using molding and shearing operations, as it would be necessary in conventional finned heat exchanger, thereby providing a great reduction in the material and operating cost.
  • the heat exchanger according to the present invention operates with a very small load loss at the primary fluid side, with a great reduction of the atmospheric pollution.
  • the above mentioned small load loss will provide a great reduction of the CO and NOx emissions, and a very low electric consume for driving the primary fluid conveying members, including, for example, fans, pumps, and so on.
  • the subject heat exchanger can comprise any desired numbers of operating levels, depending on its applications and uses.
  • the subject heat exchanger construction comprises a plurality of tubes which can have either an equal circular, rectangular, flattened and/or contoured cross section.
  • the subject heat exchanger comprises one or more independent heat exchanger circuits therethrough different fluid can be conveyed with different and independent features and flow rates.
  • the subject heat exchanger construction as stated, comprises any desired number of operating levels, depending on its use and applications.
  • the used materials, as well as the contingent size and shapes can be any, according to requirements.

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  • 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)
EP04018161A 2003-09-29 2004-07-30 Aufbau eines Wärmetauschers Withdrawn EP1519135A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI20031862 2003-09-29
ITMI20031862 ITMI20031862A1 (it) 2003-09-29 2003-09-29 Struttura di scambiatore di calore.

Publications (2)

Publication Number Publication Date
EP1519135A2 true EP1519135A2 (de) 2005-03-30
EP1519135A3 EP1519135A3 (de) 2006-09-20

Family

ID=34179335

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04018161A Withdrawn EP1519135A3 (de) 2003-09-29 2004-07-30 Aufbau eines Wärmetauschers

Country Status (3)

Country Link
EP (1) EP1519135A3 (de)
CN (1) CN1603733B (de)
IT (1) ITMI20031862A1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100491698C (zh) * 2008-01-29 2009-05-27 何满潮 深井模块化组装移动式降温器
CN103557586B (zh) * 2013-11-13 2016-01-06 李林 燃气热水装置
CN105486150A (zh) * 2016-01-11 2016-04-13 芜湖美的厨卫电器制造有限公司 换热件和换热器

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB913237A (en) * 1958-03-05 1962-12-19 Lely Nv C Van Der Improvements in or relating to implements for the lateral displacement of crop lyingon the ground
GB943235A (en) * 1960-10-25 1963-12-04 Marston Excelsior Ltd Improvements in or relating to heat exchangers
JPS5922623B2 (ja) * 1980-12-08 1984-05-28 富士重工業株式会社 熱交換器の製造方法
DE4141556C2 (de) * 1991-12-17 2003-01-30 Behr Gmbh & Co Wärmetauscher für eine Abgasanlage eines Kraftfahrzeuges
US5380499A (en) * 1993-06-15 1995-01-10 The Babcock & Wilcox Company Combined heat exchanger and ammonia injection process
JPH11294973A (ja) * 1998-04-14 1999-10-29 Tokyo Gas Co Ltd 吸収冷温水機の熱交換器
DE10106371A1 (de) * 2001-02-12 2002-08-14 Ludwig Pilsl Vorrichtung für den Austausch von Wärme

Also Published As

Publication number Publication date
CN1603733B (zh) 2010-06-02
EP1519135A3 (de) 2006-09-20
CN1603733A (zh) 2005-04-06
ITMI20031862A1 (it) 2005-03-30

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