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WO2018114340A1 - Élément coulé pour échangeur de chaleur - Google Patents

Élément coulé pour échangeur de chaleur Download PDF

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Publication number
WO2018114340A1
WO2018114340A1 PCT/EP2017/081719 EP2017081719W WO2018114340A1 WO 2018114340 A1 WO2018114340 A1 WO 2018114340A1 EP 2017081719 W EP2017081719 W EP 2017081719W WO 2018114340 A1 WO2018114340 A1 WO 2018114340A1
Authority
WO
WIPO (PCT)
Prior art keywords
cast
cast wall
wall
plug
pins
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.)
Ceased
Application number
PCT/EP2017/081719
Other languages
English (en)
Inventor
Gertjan Zwiggelaar
Omke Jan Teerling
Raymond Westers
Mathieu VERHOOGT
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.)
Bekaert Combustion Technology BV
Original Assignee
Bekaert Combustion Technology BV
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 Bekaert Combustion Technology BV filed Critical Bekaert Combustion Technology BV
Publication of WO2018114340A1 publication Critical patent/WO2018114340A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • F24H1/30—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 being built up from sections
    • F24H1/32—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 being built up from sections with vertical sections arranged side by side
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D31/00—Cutting-off surplus material, e.g. gates; Cleaning and working on castings
    • B22D31/002—Cleaning, working on castings
    • 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
    • F24H8/00—Fluid heaters characterised by means for extracting latent heat from flue gases by means of condensation
    • 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
    • F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
    • F28D21/0001—Recuperative heat exchangers
    • F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
    • F28D21/0005—Recuperative heat exchangers the heat being recuperated from exhaust gases for domestic or space-heating systems
    • F28D21/0007—Water heaters
    • 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
    • F28F1/124—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 being formed of pins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F11/00—Arrangements for sealing leaky tubes and conduits
    • F28F11/02—Arrangements for sealing leaky tubes and conduits using obturating elements, e.g. washers, inserted and operated independently of each other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
    • F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
    • F28F3/022—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being wires or pins
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2220/00—Closure means, e.g. end caps on header boxes or plugs on conduits
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]

Definitions

  • the invention relates to a cast element for a heat exchanger.
  • the cast element allows
  • Cast elements for heat exchangers e.g. for heat exchanger used in heat cells are known.
  • a burner is provided in a combustion chamber of the heat exchanger.
  • the flue gas generated by the burner in the combustion chamber will transfer its heat through the walls of the cast elements of the heat exchanger to the liquid, mostly water, to be heated.
  • Several types of heat exchangers comprising cast elements are known. Types include mono-casts and sectional heat exchangers. Sectional heat exchangers are built up of a number of sections or segments. Sectional heat exchangers, e.g. in aluminium, exist that comprise a number of identical intermediate segments positioned next to each other; and two end segments.
  • the number of intermediate segments that is used in the assembly of the heat exchanger depends on the required capacity of the heat exchanger.
  • the heat exchanger has a number of channels (at least one water channel in each intermediate segment) in parallel flow connection for water to be heated, and flue gas channels extending from the one or more combustion chambers in the heat exchanger.
  • Cast elements for heat exchangers are typically made using sand cores where a fluid flow channel inside the cast element is to be provided.
  • a sectional heat exchanger, using cast intermediate segments, is provided in
  • EP2080961A2 describes a boiler having a sectional heat exchanger.
  • the sectional heat exchanger has vertical elements made of casting material; and gas or oil combustion for heat exchange between hot gas and boiler water.
  • An exhaust gas and condensation water collector is formed in a lower area, and a combustion chamber is separated from a circular water arm.
  • Vertical water arms are fastened to the circular water arm at water side below the combustion chamber based on a lower hub. The vertical water arms form a vertical flow channel for the hot gases.
  • a first aspect of the invention is a cast element for a heat exchanger.
  • the cast element comprises a first cast wall and a second cast wall.
  • Preferably the first cast wall and the second cast wall are parallel to each other.
  • a, preferably meandering, channel is provided for the flow of fluid to be heated in the heat exchanger.
  • the cast element comprises first pins protruding from the surface at the outer side of the first cast wall, for increasing the exchange of heat towards the fluid to be heated; and at least one - and preferably a plurality of; and more preferably at least three - through hole(s) through the first cast wall on the surface of the first cast wall from which first pins protrude.
  • the through hole(s) create a fluid flow connection through the first cast wall between the channel and the outside of the channel.
  • the through hole(s) are surrounded by first pins protruding from the surface at the outer side of the first cast wall.
  • the cast element is a mono-cast.
  • Cast elements for heat exchangers can be made using sand cores to form the channel for fluid flow between cast metal walls.
  • the sand cores need to be kept in position. This is typically done by using extensions of the sand core at the sides of the cast element, sides which will form the side parts of the heat exchanger where no hot flue gas flows that needs to exchange its heat to the fluid to be heated in the fluid flow channel.
  • Such through holes are typically closed after the casting process by means of the insertion of plugs.
  • such approach does not allow manufacturing big cast elements for use in heat exchangers with large capacity.
  • the cast element of the first aspect of the invention allows producing heat exchangers and heat cells of large capacity, e.g. sectional heat exchangers in heat cells of 1 MW or even 3 MW capacity.
  • the through holes in the inventive cast element originate from the inventive method used to produce the cast elements; from the use of extensions of the sand core that are used during casting to keep the sand cores in their position, to counter the forces on the sand core exerted by the molten metal (e.g. aluminium or aluminium alloy) during casting. This way, a large cast element of high quality can be produced; and used in heat exchangers, and in heat cells of large capacity.
  • the invention allows production of heat exchangers and heat cells of large capacity that have a high efficiency in heat transfer.
  • the cast element comprises a combustion chamber for the production of flue gas when the cast element is used in a, preferably condensing, heat cell;
  • the cast element comprises second pins protruding from a surface at the outer side of the second cast wall, for increasing the exchange of heat towards the fluid to be heated.
  • the cast element comprises second pins protruding from a surface at the outer side of the second cast wall, for increasing the exchange of heat towards the fluid to be heated.
  • the cast element does not comprise through holes inside the channel through the second cast wall at the surface of the second cast wall from which second pins protrude.
  • the cast element comprises second pins protruding from a surface at the outer side of the second cast wall, for increasing the exchange of heat towards the fluid to be heated.
  • the cast element comprises at least one - and preferably a plurality of - through hole(s) into the channel through the second cast wall at the surface of the second cast wall from which first pins protrude.
  • the cast element is a section for side to side assembly in a sectional heat exchanger.
  • the at least one through hole has a circular cross section.
  • the at least one through hole has a cylindrical shape.
  • a second aspect of the invention is an element for a heat exchanger.
  • the element comprises a cast element as in the first aspect of the invention; and at least one - and preferably a plurality of - plug(s) inserted in the first cast wall. Each plug closes off a through hole through the first cast wall at the surface of the first cast wall from which first pins protrude, such that no fluid can flow through the plugged through holes.
  • the plug is casted.
  • the plug is welded onto the first cast wall in order to close off the through hole.
  • the plug is inserted in the first cast wall via screw threads in the plug and in the first cast wall.
  • the plug is screwed into the first cast wall.
  • screw thread can be provided at the plug.
  • At least one of the plugs comprises at least one pin or fin; and preferably a plurality of pins or fins; protruding from the outer surface of the plug for increasing the exchange of heat towards the fluid to be heated.
  • the direction of the pins of fins is from the surface of the plug away from the channel.
  • the plug comprises a plurality of pins protruding from the outer surface of the plug for increasing the exchange of heat towards the fluid to be heated, wherein the pins are provided in the same pattern as the pattern of the pins surrounding the pins on the plug.
  • same pattern of pins is meant that pins have the same diameter and that pitch and spacing between pins is the same on the plug as surrounding the plug.
  • the surface of the plug at the outer side of the first cast wall is substantially flat.
  • At least one of the plugs comprises a protrusion protruding in the channel for the flow of fluid to be heated.
  • the protrusion can be a pin or a fin. Even more preferably, a plurality of protrusions is provided protruding in the channel for the flow of fluid to be heated.
  • the protrusions can be pins and/or fins. The protrusion or protrusions create obstacles in the channel for the flow of fluid, thereby creating beneficial effects by mixing the flow of fluid to be heated.
  • the surface of the plugs at the outer side of the first cast wall is preferably substantially flat. Plugs that are substantially flat are preferred at positions on the element where temperature difference between the fluids between which heat is to be exchanged is big; in order to prevent the risk of boiling of the water that is to be heated by flue gas.
  • the element comprises a plurality of plugs.
  • Each plug closes off a through hole through the first cast wall at the surface of the first cast wall from which first pins protrude.
  • At least one plug - and preferably a plurality of plugs - comprises at least one pin or fin protruding from the outer surface of the plug for increasing the exchange of heat towards the fluid to be heated.
  • the surface of at least one plug - and preferably of a plurality of plugs - is substantially flat at the outer side of the first cast wall. With the surface of a plug is substantially flat at the outer side of the first cast wall is meant that the plug does not comprise protrusions protruding from the outer surface of the plug.
  • Plugs that are substantially flat are preferred at positions of the element where temperature difference between the fluids between which heat is to be exchanged will be big in the heat exchanger; in order to prevent the risk of boiling of the water that is to be heated by flue gas.
  • Plugs that comprises at least one pin or fin are preferred in zones of the element where the difference between the temperature of flue gas and the water are lower, in order to increase the efficiency of heat exchange in such zones where the risk of boiling of water in the water channel does not exist.
  • the surface of the plugs at the outer side of the first cast wall is preferably substantially flat.
  • through holes in the first quarter (and more preferably in the first third) of the height of the cast element below the combustion chamber are closed by means of plugs having a substantially flat surface; whereas through holes further down are more preferably closed by means of plugs comprising at least one pin or fin protruding from the outer surface of the plug for increasing the exchange of heat towards the fluid to be heated.
  • the cast element is provided out of aluminium or out of aluminium alloy; and the plug or plugs are provided out of aluminium or out of aluminium alloy.
  • a third aspect of the invention is a sectional heat exchanger for a condensing heat cell.
  • the sectional heat exchanger comprises a plurality of elements as in any embodiment of the second aspect of the invention. Elements are assembled side by side parallel to each other, such that a channel is provided for the flow of flue gas between the first cast wall of an element and a cast wall - preferably the second cast wall - of its neighbouring element.
  • the sectional heat exchanger comprises a combustion chamber extending perpendicularly to the elements.
  • the combustion chamber can be provided for installation of a burner, e.g. a surface stabilized premix gas burner, for the production of flue gas.
  • the combustion chamber is provided in flue gas flow connection with the channel or channels provided for the flow of flue gas.
  • a fourth aspect of the invention is a plug for closing off a through hole of a cast element as in any embodiment of the first aspect of the invention.
  • the plug is provided out of light metal; preferably out of aluminium or an aluminium alloy.
  • the metal plug comprises a plurality of pins or fins for the increase of heat transfer.
  • a fifth aspect is a method for producing a cast element as in any embodiment of the first aspect of the invention.
  • the method comprises the step of providing a sand core that will create in the cast element a channel for the flow of fluid to be heated in between the first cast wall and the second cast wall of the cast segment.
  • the sand core comprises one or more than one extension used during casting to keep the sand core in its position.
  • the one or more than one extension(s) allow countering forces on the sand core exerted by the molten metal (e.g. aluminium) during casting.
  • the one or more than one extension(s) are provided such that one or more than one through hole inside the channel through the first cast wall at the surface of the first cast wall from which first pins protrude will be formed during casting.
  • the method further comprises the steps of casting light metal around the sand core; and removing the sand core. Using the method, large cast elements of high quality can be produced; and used in heat exchangers, and in heat cells of large
  • Figure 1 and 2 show an example of a cast element according to the first aspect of the
  • Figure 3 shows an example of an element according to the second aspect of the invention.
  • Figure 4 - and its detail figure 4A - show an example of a sectional heat exchanger as in the third aspect of the invention.
  • FIGS 5, 6, 7, 8 and 9 show plugs that can be used in the invention.
  • Figure 1 shows an example of a cast element 110 for a heat exchanger with a view on the first cast wall 120.
  • Figure 2 shows the section of the exemplary cast element of figure 1 between the first cast wall and the second cast wall.
  • the exemplary cast element comprises a first cast wall 120 and a second cast wall.
  • the first cast wall and the second cast wall are parallel to each other.
  • a meandering channel 240 (figure 2) is provided for the flow of fluid to be heated in the heat exchanger.
  • the cast element comprises first pins 122 protruding from the surface at the outer side of the first cast wall 120, for increasing the exchange of heat towards the fluid to be heated; and a plurality of through holes 150 through the first cast wall at the surface of the first cast wall from which first pins protrude.
  • the through hole(s) create a fluid flow connection through the first cast wall between the channel and the outside of the channel.
  • the through holes(s) are surrounded by first pins protruding from the surface at the outer side of the first cast wall.
  • the cast element is a mono-cast.
  • the through holes in the inventive cast element originate from the inventive method used to produce the cast elements: from the use of extensions of the sand core that are used during casting to keep the sand cores in their position, to counter the forces on the sand core exerted by the molten metal (e.g. aluminium) during casting.
  • the molten metal e.g. aluminium
  • the cast element 110 of figure 1 comprises a combustion chamber 160 for the production of flue gas when the cast element is used in a, preferably condensing, heat cell.
  • Figure 3 shows exemplary element 314 for a heat exchanger comprising a cast element as in the first aspect of the invention; and plugs inserted in each of the through holes.
  • the cast element can be the cast element shown in figures 1 and 2.
  • Figure 3 shows a view on the first cast wall 120.
  • the cast element comprises a first cast wall 120 and a second cast wall.
  • the first cast wall and the second cast wall are parallel to each other.
  • a meandering channel is provided for the flow of fluid to be heated in the heat exchanger.
  • the cast element comprises first pins 122 protruding from a surface at the outer side of the first cast wall, for increasing the exchange of heat towards the fluid to be heated; and a plurality of through holes 150 inside the channel through the first cast wall at the surface of the first cast wall from which first pins protrude.
  • the cast element is a mono-cast.
  • the exemplary element 314 for the heat exchanger comprises plugs inserted in each of the through holes. Each plug 380, 382 closes off a through hole through the first cast wall at the surface of the first cast wall from which first pins protrude.
  • the plugs can be welded onto the first cast wall in order to close off the through hole. It is also possible to screw the pins into the first wall.
  • Plugs can be provided with pins 382 for the increase of heat transfer.
  • plugs 380 in the top part of the element have a substantially flat surface; whereas plugs 382 in the lower part of the element are provided with pins for the increase of heat transfer.
  • the sectional heat exchanger 400 for a condensing heat cell is shown in figure 4; and the detail of section A is shown in figure 4A.
  • the sectional heat exchanger comprises a plurality of elements 414 as in the second aspect of the invention, e.g. the element 314 of figure 3.
  • the elements 414 for the heat exchanger comprise a cast element as in the first aspect of the invention; and plugs 480 inserted in each of the through holes 450 of the cast elements.
  • Elements 414 are assembled side by side parallel to each other, such that a channel 470 is provided for the flow of flue gas between the first cast wall 420 of an element and a cast wall - preferably the second cast wall 430 - of its neighbouring element.
  • the sectional heat exchanger comprises a combustion chamber 460 extending perpendicularly to the elements.
  • the combustion chamber is provided in flue gas flow connection with the channel or channels provided for the flow of flue gas.
  • a surface stabilized premix gas burner (not shown in figure 4) can be installed in the sectional heat exchanger, thereby forming a heat cell.
  • the cast element comprises first pins 422 protruding from a surface at the outer side of the first cast wall, for increasing the exchange of heat towards the fluid to be heated; and a plurality of through hole(s) 450 inside the channel 440 through the first cast wall at the surface of the first cast wall from which first pins protrude.
  • the exemplary cast element comprises second pins 432 protruding from a surface at the outer side of the second cast wall, for increasing the exchange of heat towards the fluid to be heated.
  • a cast element does not comprise through holes inside the channel through the second cast wall at the surface of the second cast wall from which second pins protrude. It is also possible however to provide cast element that comprise through holes inside the channel through the second cast wall at the surface of the second cast wall from which second pins protrude.
  • Each plug 480 closes off a through hole through the first cast wall at the surface of the first cast wall from which first pins protrude.
  • the plugs can e.g. be welded onto the first cast wall in order to close off the through hole.
  • through holes in the first third of the height of the cast element below the combustion chamber are closed by means of plugs 480 having a substantially flat surface; whereas through holes further down are closed by means of plugs 482 comprising at least one pin 486 or fin protruding from the outer surface of the plug for increasing the exchange of heat towards the fluid to be heated.
  • FIG. 5 shows an example of a plug 580 that can be used in the invention to close off a through hole through the first cast wall at the surface of the first cast wall from which first pins protrude.
  • the surface of the plug that will form the outside of the first cast wall when the plug is inserted in a through hole is substantially flat.
  • Figure 6 shows an example of a plug 682 that can be used in the invention to close off a through hole through the first cast wall at the surface of the first cast wall from which first pins protrude.
  • the plug comprises one pin 686 protruding from the outer surface of the plug.
  • the protruding pin will provide a pin protruding from the outer surface from the element when the plug is inserted in a through hole to close off the through hole.
  • the pin will increase the exchange of heat towards the fluid to be heated in the heat exchanger.
  • Figure 7 shows an example of a plug 782 that can be used in the invention to close off a through hole through the first cast wall at the surface of the first cast wall from which first pins protrude.
  • the plug comprises a plurality of pins 786 protruding from the outer surface of the plug, the protruding pins will provide pins protruding from the outer surface of the element when the plug is inserted in a through hole to close off the through hole.
  • the pins will increase the exchange of heat towards the fluid to be heated in the heat exchanger.
  • Figure 8 shows an example of a plug 882 that can be used in the invention to close off a through hole through the first cast wall at the surface of the first cast wall from which first pins protrude.
  • the plug comprises a plurality of pins 886 protruding from the outer surface of the plug, the protruding pins will provide pins protruding from the outer surface of the element when the plug is inserted in a through hole to close off the through hole.
  • the pins will increase the exchange of heat towards the fluid to be heated in the heat exchanger.
  • the plug 882 also comprises a protrusion 887 for protruding in the channel for the flow of fluid to be heated.
  • Figure 9 shows an example of a plug 982 that can be used in the invention to close off a through hole through the first cast wall at the surface of the first cast wall from which first pins protrude.
  • the plug comprises a plurality of pins 986 protruding from the outer surface of the plug, the protruding pins will provide pins protruding from the outer surface of the element when the plug is inserted in a through hole to close off the through hole.
  • the plug of figure 9 has finer pins than the pins of figures 7 and 8 and can be used in a heat exchanger wherein the pins on the plug are provided in the same pattern as the pattern of the pins on the wall of the cast element that surround the pins on the plug.
  • the plugs of figures 5, 6, 7, 8 and 9 can e.g. be made by means of casting.
  • the plugs are provided out of light metal, preferably out of the same metal as the cast element.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Geometry (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

La présente invention concerne un élément coulé comprenant une première paroi coulée et une seconde paroi coulée. Entre la première paroi coulée et la seconde paroi coulée et délimité par celles-ci, un canal est prévu pour l'écoulement de fluide à chauffer dans l'échangeur de chaleur. L'élément coulé comprend des premières broches faisant saillie à partir de la surface au niveau du côté extérieur de la première paroi coulée, pour augmenter l'échange de chaleur vers le fluide à chauffer ; et au moins un trou traversant à travers la première paroi coulée sur la surface de la première paroi coulée à partir de laquelle des premières broches font saillie. Le ou les trous traversants créent un raccordement d'écoulement de fluide à travers la première paroi coulée entre le canal et l'extérieur du canal. Au niveau du côté extérieur de la première paroi coulée, le ou les trous traversants sont entourés par des premières broches faisant saillie à partir de la surface au niveau du côté extérieur de la première paroi coulée. L'élément coulé est un mono-coulé.
PCT/EP2017/081719 2016-12-21 2017-12-06 Élément coulé pour échangeur de chaleur Ceased WO2018114340A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP16205602.2 2016-12-21
EP16205602 2016-12-21

Publications (1)

Publication Number Publication Date
WO2018114340A1 true WO2018114340A1 (fr) 2018-06-28

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WO (1) WO2018114340A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3764021A1 (fr) * 2019-07-10 2021-01-13 Bekaert Combustion Technology B.V. Échangeur de chaleur sectionnel

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5109806A (en) * 1990-10-15 1992-05-05 The Marley Company Premix boiler construction
EP0730127A1 (fr) * 1995-02-28 1996-09-04 Dejatech B.V. Echangeur de chaleur avec chambre de combustion universelle et purgeur de condensat
EP1028298A1 (fr) * 1999-02-10 2000-08-16 Holding J.H. Deckers N.V. Appareil de chauffage avec echangeur de chaleur coulé et integré
DE102005014616B3 (de) 2005-03-31 2006-06-29 Robert Bosch Gmbh Gliederheizkessel aus Gusseisen oder Aluminium
EP2080961A2 (fr) 2008-01-17 2009-07-22 Robert Bosch GmbH Chaudière sectionnable
EP2486995A1 (fr) * 2011-02-09 2012-08-15 Gerardus Eliza Henricus Beckers Produits coulés en alliage löger, par exemple échangeur thermique, avec des obturateurs de trous de moulage, obturateur et son procédé de fabrication

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5109806A (en) * 1990-10-15 1992-05-05 The Marley Company Premix boiler construction
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DE102005014616B3 (de) 2005-03-31 2006-06-29 Robert Bosch Gmbh Gliederheizkessel aus Gusseisen oder Aluminium
EP2080961A2 (fr) 2008-01-17 2009-07-22 Robert Bosch GmbH Chaudière sectionnable
EP2486995A1 (fr) * 2011-02-09 2012-08-15 Gerardus Eliza Henricus Beckers Produits coulés en alliage löger, par exemple échangeur thermique, avec des obturateurs de trous de moulage, obturateur et son procédé de fabrication

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EP3764021A1 (fr) * 2019-07-10 2021-01-13 Bekaert Combustion Technology B.V. Échangeur de chaleur sectionnel

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