WO2022009243A1 - Method for finning a heat exchanger and heat exchanger obtained by applying such method - Google Patents

Method for finning a heat exchanger and heat exchanger obtained by applying such method Download PDF

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Publication number
WO2022009243A1
WO2022009243A1 PCT/IT2021/050208 IT2021050208W WO2022009243A1 WO 2022009243 A1 WO2022009243 A1 WO 2022009243A1 IT 2021050208 W IT2021050208 W IT 2021050208W WO 2022009243 A1 WO2022009243 A1 WO 2022009243A1
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WO
WIPO (PCT)
Prior art keywords
fins
plate
metal
heat exchanger
heat
Prior art date
Application number
PCT/IT2021/050208
Other languages
French (fr)
Inventor
Enzo CELANT
Original Assignee
Celant.Tel S.R.L.
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 Celant.Tel S.R.L. filed Critical Celant.Tel S.R.L.
Publication of WO2022009243A1 publication Critical patent/WO2022009243A1/en

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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
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/0008—Soldering, e.g. brazing, or unsoldering specially adapted for particular articles or work
    • B23K1/0012—Brazing heat exchangers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K1/00—Soldering, e.g. brazing, or unsoldering
    • B23K1/08—Soldering by means of dipping in molten solder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F28F21/081—Heat exchange elements made from metals or metal alloys
    • F28F21/082—Heat exchange elements made from metals or metal alloys from steel or ferrous alloys
    • 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
    • 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
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D20/02—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat
    • F28D20/023—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using latent heat the latent heat storage material being enclosed in granular particles or dispersed in a porous, fibrous or cellular structure
    • 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
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D2020/0004—Particular heat storage apparatus
    • F28D2020/0021—Particular heat storage apparatus the heat storage material being enclosed in loose or stacked elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F28F21/081—Heat exchange elements made from metals or metal alloys
    • F28F21/084—Heat exchange elements made from metals or metal alloys from aluminium or aluminium alloys
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F28F21/081—Heat exchange elements made from metals or metal alloys
    • F28F21/085—Heat exchange elements made from metals or metal alloys from copper or copper alloys
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/04—Fastening; Joining by brazing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2275/00—Fastening; Joining
    • F28F2275/06—Fastening; Joining by welding
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/14—Thermal energy storage

Definitions

  • the present invention refers to a method for finning a heat exchanger and to the exchanger obtained with the application of the method.
  • To increase the heat exchange surfaces it is normally common to apply fins to the surfaces.
  • the material used is aluminum, there is usually no difficulty in making specially shaped extrusions. It involves making a specially shaped extrusion die, which is used to extrude aluminum. Given the characteristics of the material, the costs are limited and acceptable even for limited productions .
  • the heat exchange surfaces are made of carbon steel, considerably cheaper than aluminum.
  • the solution of making extrusions appears impractical for steel, especially for small series, due to the high costs of the equipment needed to work the steels.
  • the steel fins are welded onto a plate, also made of steel.
  • this procedure is excessively expensive, but has practically no alternatives for small and very small series.
  • Object of the present invention is providing a method for applying fins to a metal plate, particularly suitable for small and medium series productions, since it does not require any specific equipment.
  • the present invention solves the problem posed by proposing a method and a device, respectively according to their independent claims, for obtaining a heat exchanger of the type which provides a plurality of fins applied to a surface.
  • the method is of the type that involves applying a plurality of metal fins to a surface that is also metal, the application being carried out by welding, and comprises the following steps: - bringing the plurality of fins (13, 31, 34,
  • the fins constitute a grid, so that it is simple and economical to couple the plurality of fins with the plate. In this way, in fact, it is easy to keep the grating in contact with the metal surface, for example by means of some welding points, and to effect the infiltration of metal material, for example by immersion into a bath of molten metal.
  • the contact made in this phase is not normally a perfect contact, due to the inevitable flatness defects of the plate and alignment of the fins. This fact, however, is not a problem; on the contrary, it favors the infiltration of metal material between plate and fins.
  • a galvanic bath can be used to carry out an electrolytic deposition of a suitable metal.
  • a further variant can be constituted by a painting with products containing metal powders.
  • the fins can be applied individually, by brazing, by providing suitable means for keeping the fins in position.
  • the latter procedure may be convenient in case of very small series.
  • the device obtained with the method described is a heat exchanger provided with metal fins applied to a plate which is also metal; according to the invention, the fins are connected to the plate by infiltrating, between the fins (13, 31,
  • Figure 1 shows a finned plate using the welding method
  • (1) designates a finned plate obtained according to the known art.
  • the finned plate (1) comprises a plate (2) and a plurality of fins (3) made by bending the metal strips in an L shape, so that the bases (3a) of the metal strips can be welded to the plate (2) by electric roller welding.
  • the heat passage section is not particularly extensive.
  • Fig. 2 shows a finned plate (10) obtained with the method according to the invention.
  • the finned plate (10), according to the invention, comprises a plate (11) on which a grid (12) is welded which, in turn, consists of a plurality of first fins (13).
  • the grating (12) is a grating of a known type, obtained, for example, by electrically welding a plurality of the first fins (13) with cylindrical bars (14).
  • the finned plate (10) is finally obtained by placing the grating (12) in contact with the plate (11) and immersing it all into a bath of molten zinc, using suitable means to keep the grating (12) in contact with the plate (11).
  • the effect is to obtain, simultaneously with the surface coating, the continuous welding of the first fins (13) to the plate (11), ensuring the metallic continuity between the plate (11) and the fins (13).
  • the molten zinc is arranged around the base of the fins (13) by enlarging it and consequently increasing the heat passage area.
  • the finned plate (10) can be obtained by placing the first single fins (13) on the plate (11), using suitable means to keep the fins (13) in position during immersion into the molten zinc bath and subsequent cooling.
  • further second fins (31) can be applied on the lower part of the plate (11) to facilitate the heat exchange with the underlying environment.
  • the fins (31) can be part of a device (30) for the accumulation of heat, as will be specified below.
  • Fig. 3 shows a finned plate (20) obtained with the method according to the invention, using a grating (12a), again obtained by electrically welding a plurality of fins (13) with cylindrical bars (14), but with the addition of longitudinal fins (15) which give greater strength to the whole, making it suitable to perform a structural function as well.
  • Fig. 4 shows a finned plate (10) of the type coupled with the device (30) for the accumulation of heat.
  • the device (30) for the accumulation of heat comprises: the plurality of second fins (31) welded below the plate (11); a container, filled with a phase change material (not shown), formed by four walls (32) and a bottom (33), inside which a plurality of third fins (34), called third fins (34), are offset with respect to the second fins (31).
  • the fins (31) and (34) will be advantageously welded to the respective plates (11) and (33) with the method according to the invention, preferably using suitable gratings.
  • the second and third fins (31) and (34) will protrude inside the thermal mass, constituted by the phase change substance, to improve the heat exchange between the phase change substance and the fins (31) and (34).
  • fourth fins (35) can be welded, to improve the heat exchange with the underlying environment.
  • the method according to the invention has been described so far with reference to carbon steel welded by immersion into molten zinc; however, the same method can be used with other types of steel, or with copper welded by immersion into a suitable molten alloy, for example alloys based on tin and/or silver. Obviously in this case the costs will be considerably higher and therefore the materials will be preferably used in cases in which the heat exchange needs are particularly stringent.
  • a galvanic bath can be used to carry out an electrolytic deposition of a suitable metal.
  • the deposited metal layer can be grown until sufficient metal contact between the fins and the base plate is ensured.
  • the coating of the exchanger can be carried out by painting with products containing metal powders, either by spray painting or by means of cataphoresis treatments.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Prevention Of Electric Corrosion (AREA)

Abstract

A method for finning a heat exchanger and an exchanger obtained with the application of this method are described. The method consists in applying a plurality of metal fins (13, 31, 34, 35) to a plate (11, 33), which is also made of metal, by welding and comprises the following steps: contacting the plurality of fins (13, 31, 34, 35) with the plate (11, 33), means being provided for maintaining the contact during the subsequent step; infiltrating, between the fins (13, 31, 34, 35) and the plate (11, 33), some metal material capable of favoring the passage of heat between the fins.

Description

METHOD FOR FINNING A HEAT EXCHANGER AND HEAT EXCHANGER OBTAINED BY APPLYING SUCH METHOD
The present invention refers to a method for finning a heat exchanger and to the exchanger obtained with the application of the method. To increase the heat exchange surfaces, it is normally common to apply fins to the surfaces. When the material used is aluminum, there is usually no difficulty in making specially shaped extrusions. It involves making a specially shaped extrusion die, which is used to extrude aluminum. Given the characteristics of the material, the costs are limited and acceptable even for limited productions .
In some cases, where the heat exchange needs are not particularly stringent, the heat exchange surfaces are made of carbon steel, considerably cheaper than aluminum. In these cases, the solution of making extrusions appears impractical for steel, especially for small series, due to the high costs of the equipment needed to work the steels. In these cases, the steel fins are welded onto a plate, also made of steel. However, this procedure is excessively expensive, but has practically no alternatives for small and very small series.
Object of the present invention is providing a method for applying fins to a metal plate, particularly suitable for small and medium series productions, since it does not require any specific equipment.
The present invention solves the problem posed by proposing a method and a device, respectively according to their independent claims, for obtaining a heat exchanger of the type which provides a plurality of fins applied to a surface.
The method is of the type that involves applying a plurality of metal fins to a surface that is also metal, the application being carried out by welding, and comprises the following steps: - bringing the plurality of fins (13, 31, 34,
35) in contact with the plate (11, 33), means being provided for maintaining the contact during the subsequent step;
- infiltrating, between the fins (13, 31, 34, 35) and the plate (11, 33), means suitable for favoring the passage of heat between the fins (13, 31, 34, 35) and the plate (11, 33).
According to a preferred embodiment, the fins constitute a grid, so that it is simple and economical to couple the plurality of fins with the plate. In this way, in fact, it is easy to keep the grating in contact with the metal surface, for example by means of some welding points, and to effect the infiltration of metal material, for example by immersion into a bath of molten metal.
The contact made in this phase is not normally a perfect contact, due to the inevitable flatness defects of the plate and alignment of the fins. This fact, however, is not a problem; on the contrary, it favors the infiltration of metal material between plate and fins.
As an alternative to immersion into a molten metal bath, a galvanic bath can be used to carry out an electrolytic deposition of a suitable metal. A further variant can be constituted by a painting with products containing metal powders.
However, the fins can be applied individually, by brazing, by providing suitable means for keeping the fins in position. The latter procedure may be convenient in case of very small series. The device obtained with the method described is a heat exchanger provided with metal fins applied to a plate which is also metal; according to the invention, the fins are connected to the plate by infiltrating, between the fins (13, 31,
34, 35) and the plate (11, 33), means adapted to favor the passage of heat between the fins (13, 31, 34, 35) and the plate (11, 33).
Preferred embodiments and non-trivial variants of the present invention are the subject matter of the dependent claims.
It is understood that all attached claims form an integral part of the present description.
It will be immediately obvious that innumerable variations and modifications (for example relating to shape, dimensions, arrangements and parts with equivalent functionality) can be made to what is described, without departing from the scope of the invention as appears from the attached claims.
The invention will now be described, for illustrative and non-limiting purposes only, according to a preferred embodiment and with reference to the attached figures, in which:
Figure 1 shows a finned plate using the welding method;
- Figures 2 and 3 show finned plates using the method according to the invention;
- Figure 4 shows a possible improvement of the exchanger obtained with the method according to the invention.
With reference to Fig. 1, (1) designates a finned plate obtained according to the known art.
The finned plate (1) comprises a plate (2) and a plurality of fins (3) made by bending the metal strips in an L shape, so that the bases (3a) of the metal strips can be welded to the plate (2) by electric roller welding.
In this way, even though there is a metallic continuity between the base (2) and the fins (3), the heat passage section is not particularly extensive.
This procedure for the realization of the finning, in addition to the extreme manufacturing complexity, has also two serious limitations. First of all, in order to make the bases (3a), it is not possible to use too high thicknesses, thereby reducing the ability to transmit heat. Furthermore, the very width of the bases (3a) forces the fins to be arranged at a considerable distance, so it is not in fact possible to create a dense finning, should it be necessary to disperse heat.
Fig. 2 shows a finned plate (10) obtained with the method according to the invention. The finned plate (10), according to the invention, comprises a plate (11) on which a grid (12) is welded which, in turn, consists of a plurality of first fins (13).
The grating (12) is a grating of a known type, obtained, for example, by electrically welding a plurality of the first fins (13) with cylindrical bars (14).
The finned plate (10) is finally obtained by placing the grating (12) in contact with the plate (11) and immersing it all into a bath of molten zinc, using suitable means to keep the grating (12) in contact with the plate (11). The effect is to obtain, simultaneously with the surface coating, the continuous welding of the first fins (13) to the plate (11), ensuring the metallic continuity between the plate (11) and the fins (13).
As highlighted in the enlarged detail of Fig. 2, the molten zinc is arranged around the base of the fins (13) by enlarging it and consequently increasing the heat passage area. The finned plate (10) can be obtained by placing the first single fins (13) on the plate (11), using suitable means to keep the fins (13) in position during immersion into the molten zinc bath and subsequent cooling.
According to a preferred embodiment, further second fins (31) can be applied on the lower part of the plate (11) to facilitate the heat exchange with the underlying environment. The fins (31) can be part of a device (30) for the accumulation of heat, as will be specified below.
Fig. 3 shows a finned plate (20) obtained with the method according to the invention, using a grating (12a), again obtained by electrically welding a plurality of fins (13) with cylindrical bars (14), but with the addition of longitudinal fins (15) which give greater strength to the whole, making it suitable to perform a structural function as well. Fig. 4 shows a finned plate (10) of the type coupled with the device (30) for the accumulation of heat.
According to a preferred embodiment, the device (30) for the accumulation of heat comprises: the plurality of second fins (31) welded below the plate (11); a container, filled with a phase change material (not shown), formed by four walls (32) and a bottom (33), inside which a plurality of third fins (34), called third fins (34), are offset with respect to the second fins (31).
The fins (31) and (34) will be advantageously welded to the respective plates (11) and (33) with the method according to the invention, preferably using suitable gratings.
With the geometry shown in Fig. 4, the second and third fins (31) and (34) will protrude inside the thermal mass, constituted by the phase change substance, to improve the heat exchange between the phase change substance and the fins (31) and (34).
A similar result, albeit with a decrease in effectiveness, but with a significant saving on production costs, can be obtained with the use of water instead of the phase change substance and without creating the fins (31) and (34).
According to a preferred embodiment, under the plate (33), which constitutes the bottom of the container of the phase change substance, fourth fins (35) can be welded, to improve the heat exchange with the underlying environment. The method according to the invention has been described so far with reference to carbon steel welded by immersion into molten zinc; however, the same method can be used with other types of steel, or with copper welded by immersion into a suitable molten alloy, for example alloys based on tin and/or silver. Obviously in this case the costs will be considerably higher and therefore the materials will be preferably used in cases in which the heat exchange needs are particularly stringent.
According to another preferred embodiment, as an alternative to immersion into a bath of molten metal, a galvanic bath can be used to carry out an electrolytic deposition of a suitable metal. By suitably adjusting the duration of the treatment, the deposited metal layer can be grown until sufficient metal contact between the fins and the base plate is ensured.
According to a further preferred embodiment, the coating of the exchanger can be carried out by painting with products containing metal powders, either by spray painting or by means of cataphoresis treatments.

Claims

1. Method for applying a plurality of metal fins
(13, 31, 34, 35) to a plate (11, 33), also made of metal, characterized in that it comprises the following steps:
- bringing the plurality of fins (13, 31, 34, 35) in contact with the plate (11, 33), means being provided for maintaining the contact during the subsequent step; - infiltrating, between the fins (13, 31, 34, 35) and the plate (11, 33), some metal material suitable to favor the passage of heat between the fins (13, 31, 34, 35) and the plate (11,
33).
2. Method according to claim 1, characterized in that the fins (13, 31, 34, 35) are part of a grating (12, 12a).
3. Method according to claim 1 or 2, characterized in that the means adapted to keep the fins (13, 31, 34, 35) or the grating (12, 12a) in contact with the plate (11, 33) during the step of infiltrating, between the fins (13, 31, 34, 35) and the plate (11, 33), the means adapted to favor the passage of heat between the fins (13, 31, 34, 35) and the plate (11,
33), comprise welding spots.
4. Method according to claims 1 to 3, characterized in that the metal material is infiltrated between the fins (13, 31, 34, 35) and the plate (11, 33) by immersion of the fins (13,
31, 34, 35) and the plate (11, 33) into a molten metal bath.
5. Method according to claims 1 to 3, characterized in that the metal material is infiltrated between the fins (13, 31, 34, 35) and the plate (11, 33) by immersion of the fins (13, 31, 34, 35) and plate (11, 33) into a galvanic bath in which an electrolytic metal deposit is made.
6. Method according to claims 1 to 3, characterized in that the metal material is infiltrated between the fins (13, 31, 34, 35) and the plate (11, 33) by immersion into a cataphoresis bath.
7. Method according to claims 1 to 3, characterized in that the metal material is infiltrated between the fins (13, 31, 34, 35) and the plate (11, 33) by painting.
8. Method according to claim 4, characterized in that the immersion in the molten metal bath carries out a brazing between the fins (13, 31, 34, 35) and the plate (11, 33).
9. Method according to at least one of claims 1 to 8, characterized in that the fins (13, 31, 34,
35) and the plate (11, 33) are made of steel, aluminum or copper and the interposed metal material is zinc or a tin- and/or silver-based alloy.
10. Heat exchanger provided with metal fins
(13, 31, 34, 35) applied to a plate (11, 33), also made of metal, characterized in that the fins (13, 31, 34, 35) are connected to the plate (11, 33) by a method according to claims 1 to 9.
11. Heat exchanger according to claim 10, characterized in that the first fins (13) are connected on the upper part of the plate (11).
12. Heat exchanger according to claim 10, characterized in that the second fins (31) are connected on the lower part of the plate (11).
13. Heat exchanger according to at least one of claims 10 to 12, characterized in that it comprises a device (30) for the accumulation of heat connected to the plate (11), the device (30) comprising a container, filled with water or with a phase change material, formed by walls (32) and a bottom (33).
14. Heat exchanger according to claim 13, characterized in that, on the bottom plate (33) of the device (30), a plurality of third fins (34) are welded, the third fins (34) being offset with respect to the second fins (31) and extending inside the device (30) for the accumulation of heat.
15. Heat exchanger, according to claim 13, characterized in that, on the lower part of the bottom plate (33) of the device (30), fourth fins (35) are welded.
PCT/IT2021/050208 2020-07-07 2021-07-05 Method for finning a heat exchanger and heat exchanger obtained by applying such method WO2022009243A1 (en)

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IT102020000005029 2020-07-07
IT202000005029 2020-07-07

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6174770A (en) * 1984-09-17 1986-04-17 Furukawa Alum Co Ltd Production of aluminum heat exchanger
US5490559A (en) * 1994-07-20 1996-02-13 Dinulescu; Horia A. Heat exchanger with finned partition walls
US5758720A (en) * 1996-11-26 1998-06-02 Behr America, Inc. Unitary heat exchanger core and method of making same
WO2001030528A1 (en) * 1999-10-25 2001-05-03 Alliedsignal Inc. Process for manufacturing of brazed multi-channeled structures
US6564458B1 (en) * 2000-05-12 2003-05-20 Tokyo First Trading Company Method for manufacturing a radiator
US20050126769A1 (en) * 2003-12-10 2005-06-16 Honeywell International Inc. Bimetallic plate-fin titanium based heat exchanger
US20070164088A1 (en) * 2006-01-18 2007-07-19 Kam Dianatkhah Brazing process for stainless steel heat exchangers
WO2013109968A1 (en) * 2012-01-18 2013-07-25 Holtec International, Inc. Finned tube assemblies for heat exchangers

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6174770A (en) * 1984-09-17 1986-04-17 Furukawa Alum Co Ltd Production of aluminum heat exchanger
US5490559A (en) * 1994-07-20 1996-02-13 Dinulescu; Horia A. Heat exchanger with finned partition walls
US5758720A (en) * 1996-11-26 1998-06-02 Behr America, Inc. Unitary heat exchanger core and method of making same
WO2001030528A1 (en) * 1999-10-25 2001-05-03 Alliedsignal Inc. Process for manufacturing of brazed multi-channeled structures
US6564458B1 (en) * 2000-05-12 2003-05-20 Tokyo First Trading Company Method for manufacturing a radiator
US20050126769A1 (en) * 2003-12-10 2005-06-16 Honeywell International Inc. Bimetallic plate-fin titanium based heat exchanger
US20070164088A1 (en) * 2006-01-18 2007-07-19 Kam Dianatkhah Brazing process for stainless steel heat exchangers
WO2013109968A1 (en) * 2012-01-18 2013-07-25 Holtec International, Inc. Finned tube assemblies for heat exchangers

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