EP2153158B1 - Boiler with variously-shaped heat exchange elements. - Google Patents

Boiler with variously-shaped heat exchange elements. Download PDF

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Publication number
EP2153158B1
EP2153158B1 EP08750077A EP08750077A EP2153158B1 EP 2153158 B1 EP2153158 B1 EP 2153158B1 EP 08750077 A EP08750077 A EP 08750077A EP 08750077 A EP08750077 A EP 08750077A EP 2153158 B1 EP2153158 B1 EP 2153158B1
Authority
EP
European Patent Office
Prior art keywords
exchange
walls
fluid
boiler
heat exchanger
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.)
Not-in-force
Application number
EP08750077A
Other languages
German (de)
French (fr)
Other versions
EP2153158A2 (en
Inventor
Angelo Rigamonti
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Individual
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Individual
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Publication of EP2153158A2 publication Critical patent/EP2153158A2/en
Application granted granted Critical
Publication of EP2153158B1 publication Critical patent/EP2153158B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F24H1/287—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 in line with 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
    • F24H9/02—Casings; Cover lids; Ornamental panels
    • 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
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
    • F28D9/0043—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2225/00—Reinforcing means
    • F28F2225/02—Reinforcing means for casings
    • 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

Definitions

  • the present invention relates to a boiler with variously-shaped heat exchange elements.
  • a heat exchanger is a device for changing the temperature of a fluid ("working fluid") by forcing a heat exchange with another fluid (“exchange fluid”) a large amount of which is available at a temperature sufficient to bring the working fluid to the required temperature.
  • working fluid a fluid
  • exchange fluid another fluid
  • a boiler comprises a heat exchanger fitted with a burner that can generate the exchange fluid (combustion fumes and hot air) within a combustion chamber, in order to heat water or air (the working fluid) within the boiler casing or body.
  • Each of these exchanger modules is formed by a pair of basic elements, which are reciprocally connected in a facing position so as to form a single block.
  • the object of the present invention is to obtain a boiler that can withstand higher pressures than a traditional heat exchanger.
  • a boiler including a burner, a heat exchanger adapted to raise the temperature of a working fluid through heat exchange with an exchange fluid, including a plurality of heat exchanger modules placed side by side in order to define a combustion chamber within which said burner for the generation of said exchange fluid is inserted, exchange walls for the passage of said exchange fluid, an ejection chamber for said exchange fluid fitted with a discharge flue, and a substantially parallelepiped casing adapted to be filled with working fluid, characterised in that said casing has side walls inter-connected by stay-plates placed between said heat exchanger modules, and top and bottom walls and end walls fitted with reinforcing elements to prevent their deformation due to the pressure of said working fluid.
  • the heat exchanger could be of the same type described in Patent Application WO2007/093231 .
  • the reinforcing elements may be rods applied externally to the walls of the casing.
  • the stay-plates connecting the side walls of the casing may have an area considerably smaller than that of the casing walls, so as not to block the passage of working fluid inside the casing.
  • a boiler 1 according to the present invention is shown in figures 1-5 . It can raise the temperature of water or another working fluid through heat exchange with hot air and fumes, which constitute the exchange fluid.
  • the boiler 1 includes a heat exchanger 50 formed by eight exchanger modules 2 adapted to form a combustion chamber 2B, slotted exchange walls 2C and an ejection chamber 2D.
  • a burner 3 shown diagrammatically in figures 1-5 , is applied to the combustion chamber 2B at the inlet 51 of the first of the eight heat exchangers 2, while a discharge flue 4 is connected to the outlet 52 of the ejection chamber 2D.
  • the exchange fluid, generated inside the combustion chamber 2B, passes through the exchange walls 2C and then to the expulsion chamber 2D and the discharge flue 4.
  • the modules are built in a substantially parallelepipedal air-tight casing 5, shown in figures 1-5 .
  • a casing 5 is formed by the following walls:
  • the casing 5 contains the working fluid that exchanges heat with the exchange fluid through the exchange walls 2C.
  • a working fluid is introduced through a conduit 7B and is ejected through another conduit 7C; both conduits 7B and 7C are incorporated into the front wall 5C, which also includes the inlet 51, the support means for burner 3 and the outlet 52 leading to the discharge flue 4.
  • Three stay-plates or panels 6 structurally connect the side walls 5D, and are positioned so as to be parallel to the exchange walls 2C and the front walls 5C; such panels 6 have welded ends 10, so that they can be securely inserted within cavities 11 between the side walls 5D (in other embodiments, other means of attachment may be used, provided that they are adapted to integrally join the panels 6 to the side walls).
  • cavities 11 appear as slots in the metal sheet that forms the side walls 5D.
  • the size of panel 6 is such that its height is considerably shorter than the height of the exchange walls 2C, so as not to block the passage of working fluid.
  • the action of the panels 6 is to reciprocally hold the two side walls 5D in place, preventing them from deforming, even when the pressure of the exchange fluid increases to 4.5 bar.
  • the reinforcement rods 8 are applied to the front and rear walls 5C and to the top and bottom walls 5B, which structurally reinforce the casing 5, preventing the walls from deforming under high pressures.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Details Of Fluid Heaters (AREA)
  • Hydrogen, Water And Hydrids (AREA)
  • Gas Burners (AREA)
  • Air Supply (AREA)

Abstract

There is described a boiler (1) including a burner (3), a heat exchanger (50) adapted to raise the temperature of a working fluid through heat exchange with an exchange fluid, including a plurality of heat exchanger modules (2) placed side by side in order to define a combustion chamber within which the burner (3) for the generation of exchange fluid is inserted, exchange walls (2C) for the passage of exchange fluid, an expulsion chamber (2D) for the exchange fluid fitted with a discharge flue (4) and a substantially parallelepiped casing (5) adapted to be filled with working fluid. The boiler includes side walls (5D) inter-connected by stay-plates (6) placed between the heat exchanger modules (2) and top and bottom walls (5B) and end walls (5C) fitted with reinforcing elements (8) which prevent their deformation due to the pressure of working fluid.

Description

  • The present invention relates to a boiler with variously-shaped heat exchange elements.
  • A heat exchanger is a device for changing the temperature of a fluid ("working fluid") by forcing a heat exchange with another fluid ("exchange fluid") a large amount of which is available at a temperature sufficient to bring the working fluid to the required temperature. When the heat exchange is over, the working fluid reaches the required temperature, whereas the exchange fluid, which is spent and can no longer sustain the heat exchange, is expelled.
  • A boiler comprises a heat exchanger fitted with a burner that can generate the exchange fluid (combustion fumes and hot air) within a combustion chamber, in order to heat water or air (the working fluid) within the boiler casing or body.
  • International Patent Application no. WO2007/093231 discloses a boiler according to the preamble of claim 1, namely a burner and a modular heat exchanger, consisting of exchanger modules, each of which includes:
    • a combustion chamber for the generation of an exchange fluid;
    • an exchange wall for the passage of the exchange fluid;
    • an exchange fluid ejection chamber fitted with a discharge flue.
  • Each of these exchanger modules is formed by a pair of basic elements, which are reciprocally connected in a facing position so as to form a single block.
  • Once this heat exchanger is fitted inside a casing to form a boiler, it may happen that the internal pressure is such as to cause the deformation of the internal walls of the casing.
  • The object of the present invention is to obtain a boiler that can withstand higher pressures than a traditional heat exchanger.
  • According to the invention, such an object is achieved by a boiler including a burner, a heat exchanger adapted to raise the temperature of a working fluid through heat exchange with an exchange fluid, including a plurality of heat exchanger modules placed side by side in order to define a combustion chamber within which said burner for the generation of said exchange fluid is inserted, exchange walls for the passage of said exchange fluid, an ejection chamber for said exchange fluid fitted with a discharge flue, and a substantially parallelepiped casing adapted to be filled with working fluid, characterised in that said casing has side walls inter-connected by stay-plates placed between said heat exchanger modules, and top and bottom walls and end walls fitted with reinforcing elements to prevent their deformation due to the pressure of said working fluid.
  • The heat exchanger could be of the same type described in Patent Application WO2007/093231 . The reinforcing elements may be rods applied externally to the walls of the casing. The stay-plates connecting the side walls of the casing may have an area considerably smaller than that of the casing walls, so as not to block the passage of working fluid inside the casing.
  • These and other features of the present invention will become more apparent from the following detailed description of an embodiment thereof, which is disclosed by no way of limitation in the accompanying drawings, in which:
    • figure 1 shows a perspective view of a boiler according to the invention;
    • figure 2 shows a plan view of the boiler in figure 1;
    • figure 3 shows a side view of the boiler in figure 1;
    • figure 4 shows a section view along line IV-IV of figure 2;
    • figure 5 shows a section view along line V-V of figure 3;
    • figure 6 shows a simplified side view only of the heat exchanger;
    • figure 7 shows a front view only of the heat exchanger;
    • figure 8 shows a section view along line VIII-VIII in figure 6.
  • A boiler 1 according to the present invention is shown in figures 1-5. It can raise the temperature of water or another working fluid through heat exchange with hot air and fumes, which constitute the exchange fluid.
  • The boiler 1 includes a heat exchanger 50 formed by eight exchanger modules 2 adapted to form a combustion chamber 2B, slotted exchange walls 2C and an ejection chamber 2D. A burner 3, shown diagrammatically in figures 1-5, is applied to the combustion chamber 2B at the inlet 51 of the first of the eight heat exchangers 2, while a discharge flue 4 is connected to the outlet 52 of the ejection chamber 2D. The exchange fluid, generated inside the combustion chamber 2B, passes through the exchange walls 2C and then to the expulsion chamber 2D and the discharge flue 4.
  • In order to be supported, the modules are built in a substantially parallelepipedal air-tight casing 5, shown in figures 1-5. Such a casing 5 is formed by the following walls:
    • a top and bottom wall 5B, parallel to the flow of exchange fluid inside the discharge flue 4;
    • two end walls 5C (one at the front and one at the rear), parallel to the exchange walls 2C;
    • two side walls 5D, at right angles to the exchange walls 2C.
  • The casing 5 contains the working fluid that exchanges heat with the exchange fluid through the exchange walls 2C. Such a working fluid is introduced through a conduit 7B and is ejected through another conduit 7C; both conduits 7B and 7C are incorporated into the front wall 5C, which also includes the inlet 51, the support means for burner 3 and the outlet 52 leading to the discharge flue 4.
  • Three stay-plates or panels 6 structurally connect the side walls 5D, and are positioned so as to be parallel to the exchange walls 2C and the front walls 5C; such panels 6 have welded ends 10, so that they can be securely inserted within cavities 11 between the side walls 5D (in other embodiments, other means of attachment may be used, provided that they are adapted to integrally join the panels 6 to the side walls). In the present embodiment, such cavities 11 appear as slots in the metal sheet that forms the side walls 5D.
  • The size of panel 6 is such that its height is considerably shorter than the height of the exchange walls 2C, so as not to block the passage of working fluid.
  • The action of the panels 6 is to reciprocally hold the two side walls 5D in place, preventing them from deforming, even when the pressure of the exchange fluid increases to 4.5 bar.
  • The reinforcement rods 8 are applied to the front and rear walls 5C and to the top and bottom walls 5B, which structurally reinforce the casing 5, preventing the walls from deforming under high pressures.

Claims (6)

  1. A boiler (1) including a burner (3), a discharge flue (4), a heat exchanger (50) adapted to raise the temperature of a working fluid through heat exchange with an exchange fluid, including a plurality of heat exchanger modules (2) placed side by side to define a combustion chamber (2B), within which said burner (3) for the generation of said exchange fluid is inserted, exchange walls (2C) for the passage of said exchange fluid, an ejection chamber (2D) for said exchange fluid fitted with the discharge flue (4) and a substantially parallelepipedal casing (5) adapted be filled with working fluid, characterised in that said casing (5) has side walls (5D) inter-connected by stay-plates (6) placed between said heat exchanger modules (2), and top and bottom walls (5B) and end walls (5C) fitted with reinforcing elements (8) adapted to prevent their deformation due to the pressure of said working fluid.
  2. A boiler according to claim 1, characterised in that said stay-plates (6) are formed by panels (6) with ends (10) securely fitted within cavities (11) between said side walls (5D) of the casing (5).
  3. A boiler according to claim 2, characterised in that said panels (6) are parallel to said exchange walls (2C).
  4. A boiler according to claim 3, characterised in that said panels (6) are substantially rectangular and of a height considerably shorter than the height of said exchange walls (2C).
  5. A boiler according to any of the previous claims, characterised in that said reinforcing elements (8) include rods applied to said top and bottom walls (58) and end walls (5C).
  6. A boiler according to claim 5, characterised in that said rods (8) are on the outside of said casing (5).
EP08750077A 2007-05-11 2008-05-06 Boiler with variously-shaped heat exchange elements. Not-in-force EP2153158B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT000955A ITMI20070955A1 (en) 2007-05-11 2007-05-11 "BOILER WITH VARIABLE SHAPED HEAT EXCHANGE ELEMENTS"
PCT/EP2008/055525 WO2008138803A2 (en) 2007-05-11 2008-05-06 Boiler with variously-shaped heat exchange elements.

Publications (2)

Publication Number Publication Date
EP2153158A2 EP2153158A2 (en) 2010-02-17
EP2153158B1 true EP2153158B1 (en) 2011-03-30

Family

ID=39591194

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08750077A Not-in-force EP2153158B1 (en) 2007-05-11 2008-05-06 Boiler with variously-shaped heat exchange elements.

Country Status (9)

Country Link
US (1) US20100300378A1 (en)
EP (1) EP2153158B1 (en)
CN (1) CN101680722B (en)
AT (1) ATE503976T1 (en)
CA (1) CA2686538A1 (en)
DE (1) DE602008005877D1 (en)
EA (1) EA015650B1 (en)
IT (1) ITMI20070955A1 (en)
WO (1) WO2008138803A2 (en)

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Publication number Priority date Publication date Assignee Title
IT1397535B1 (en) 2010-01-21 2013-01-16 Rigamonti MODULAR THERMAL GROUP WITH MODULATING BURNERS FOR CONDENSING BOILER.
FR2980837B1 (en) * 2011-10-04 2015-06-26 Valeo Systemes Thermiques HEAT EXCHANGER WITH STACKED PLATES.
FR2980838B1 (en) 2011-10-04 2018-04-27 Valeo Systemes Thermiques HEAT EXCHANGER
EP2795219B1 (en) * 2011-12-20 2017-12-06 Robert Bosch GmbH Modular heat exchanger
AT513731A1 (en) * 2012-11-26 2014-06-15 Vaillant Group Austria Gmbh boiler
DE102015101048B3 (en) * 2015-01-26 2016-06-09 Viessmann Werke Gmbh & Co Kg boiler
US10371413B2 (en) 2015-04-06 2019-08-06 Central Boiler, Inc. Boiler with access to heat exchangers
CA2926064C (en) 2015-04-06 2021-08-31 Dennis Brazier Boiler with access to heat exchangers
KR101789503B1 (en) * 2015-09-25 2017-10-26 주식회사 경동나비엔 Round plate heat exchanger
KR101931971B1 (en) * 2016-02-05 2018-12-24 주식회사 경동나비엔 Heat exchanger
JP6631409B2 (en) * 2016-05-23 2020-01-15 株式会社デンソー Heat exchanger
FR3053453B1 (en) * 2016-06-29 2019-07-05 Liebherr-Aerospace Toulouse Sas THERMAL EXCHANGE DEVICE COMPRISING AT LEAST ONE STIFFENING DEVICE, AIR CONDITIONING SYSTEM AND VEHICLE
CN107477871B (en) * 2017-07-20 2020-05-19 广东万和热能科技有限公司 Heat exchanger, full-premix hot water boiler and control method thereof
RU193295U1 (en) * 2019-06-20 2019-10-22 Ришат Сафуанович Шаймухаметов Hot water boiler

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Also Published As

Publication number Publication date
DE602008005877D1 (en) 2011-05-12
EA015650B1 (en) 2011-10-31
ITMI20070955A1 (en) 2008-11-12
WO2008138803A2 (en) 2008-11-20
EA200971048A1 (en) 2010-04-30
WO2008138803A3 (en) 2009-03-12
US20100300378A1 (en) 2010-12-02
CA2686538A1 (en) 2008-11-20
CN101680722B (en) 2011-12-07
ATE503976T1 (en) 2011-04-15
EP2153158A2 (en) 2010-02-17
CN101680722A (en) 2010-03-24

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