EP0132237A2 - Elément pour l'échange de chaleur entre fluides et radiateur fabriqué avec le dit élément - Google Patents

Elément pour l'échange de chaleur entre fluides et radiateur fabriqué avec le dit élément Download PDF

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Publication number
EP0132237A2
EP0132237A2 EP84830194A EP84830194A EP0132237A2 EP 0132237 A2 EP0132237 A2 EP 0132237A2 EP 84830194 A EP84830194 A EP 84830194A EP 84830194 A EP84830194 A EP 84830194A EP 0132237 A2 EP0132237 A2 EP 0132237A2
Authority
EP
European Patent Office
Prior art keywords
fins
fact
tubular element
exchange
region
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Withdrawn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
EP84830194A
Other languages
German (de)
English (en)
Other versions
EP0132237A3 (fr
Inventor
Renato Ferroni
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.)
Individual
Original Assignee
Individual
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
Priority claimed from IT833482A external-priority patent/IT1174805B/it
Priority claimed from IT03481/83A external-priority patent/IT1174804B/it
Application filed by Individual filed Critical Individual
Publication of EP0132237A2 publication Critical patent/EP0132237A2/fr
Publication of EP0132237A3 publication Critical patent/EP0132237A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • 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
    • F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
    • F28F3/048—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of ribs integral with the element or local variations in thickness of the element, e.g. grooves, microchannels
    • 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
    • F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
    • F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
    • F28D1/0246—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid heat-exchange elements having several adjacent conduits forming a whole, e.g. blocks
    • 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
    • F28F3/12—Elements constructed in the shape of a hollow panel, e.g. with channels
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2255/00—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes
    • F28F2255/16—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes extruded

Definitions

  • the invention relates to an element for exchanging heat between two fluids, and to a process for constructing the said heat exchange element.
  • exchangers are, as is known, marketed for exchanging heat between fluids, be they both liquids or mixed, for example oil and air. Many of these are constit- nted by simple tubular elements faced with fins and placed in rows.
  • the first fluid (liquid) flows through passages inside the said tubular elements, while the second (gas) hits the fins from the outside, the directions being on each occasion those most appropriate.
  • the said heat exchangers are neither relatively cheap nor simple to construct and are of a thermal efficiency that is not particularly high.
  • Heat exchangers exist that are formed by a number of blade elements side-by-side, in between which there are hollow spaces through which the various fluids can flow.
  • blade elements can be provided that define narrow passages for the liquid and wider passages for the gas.
  • the said bladeielements are supported by internal raised parts fashioned in the form of frets which, apart from a mechanical action of resistance to pressure, have the task of increasing the contact or exchange surfaces.
  • the thermal efficiency of heat exchangers of this type is particularly high but the costs are considerable, mainly on account of the need to couple a plurality of semi-finished parts or elements.
  • the said semi-finished parts in fact, have to be assembled and then welded together.
  • thq heat exchange element is constituted by an extruded section on which the fins are made with the aid of special tools movable parallel to the axis of the section.
  • Another object of the invention is to devise an exchange . element by means of which a complete radiator can be formed simply and economically.
  • the element according to the invention for exchanging heat between fluids comprising a tubular element in which a said first fluid is made to flow, and a plurality of fins integral with the said tubular' element, and characterized by the fact that the said tubular element is flat, that the said fins are placed at least on the major-sides thereof, turned crosswise to the direction in which the said element extends, and that in the region of the extremities thereof, the said tubular element has parts devoid of fins, the depth of which corresponds to the maximum height of the said fins.
  • an exchange element defined virtually, in a way in itself known, by a tubular element provided externally with fins integral there with.
  • the invention advantageously envisages the tubular element being flat in such a way as to define two major sides 2a and two minor sides 2b, the former provided with the said fins 3 tumed, advantageously, crosswise to the main direction of extension of the exchange element 1. Furthermore, the fins 3 are made in one piece with the tubular element.
  • one characteristic of the invention envisages the fins 3 being provided solely in the region of a very spacious central area of the tubular element. At points corresponding to the extremities of the tubular element, there are finless parts 4 whose depth corresponds to the maximum height of the fins 3.
  • Each tubular element is provided internally with ribs 5 that extend parallel to the main extension direction thereof.
  • the pattern of the fins 3 can be rectilineal, as shown in the front part of Figure 1 or, optionally, to suit the heat exchange and coolant requirements, rhomboidal 3' with vertices 3" in opposite contact with one another, or sinusoidal with all the fins parallel one with the other : the purpose being to increase the turbulence of the fluid that hits the fins 3.
  • the flat tubular element is formed by extrusion in a way whereby walls of a relative or even consid- e ra b le thickness are fashioned, especially in the region of the major sides 2a. Furthermore, directly with the extrusion are advantageously formed the ribs 5 that subdivide the passage inside the tubular element and whose task is that of strengthening the said passage and of increasing the heat exchange surface.
  • FIG. 1 A further characteristic of the tubular element is shown in Figure 1, namely, the wedge shaped projections 6, the purpose of which is to act as baffle plates for the flow of, for example, air, are formed in the region of the minor sides 2b again directly at the time of extrusion.
  • the flat tabular element is cut in the region of the walls that define the major sides 2a:
  • the cutting operation is performed crosswise to the main extension direction of the tubular element by means of a tool 7 having multiple cutting edges 8.
  • fins 3 that are parallel one with the other and extend over a substantial part of the gauge of the walls of the tubular element, are formed.
  • the whole tubular element is then cut into lengths corresponding to the size it is wished the heat exchangers to be and, furthermore, the extreme parts 4 are advantageously excluded from the cutting operation, so as to create terminal blocks that facilitate the connection of one heat exchanger to another.
  • the said second phase in the formation of the exchange element can be followed by a third phase in which the fins are altered in shape, as shown with a broken line in Figure 2, through the use of a jig M provided with a plurality of deforming projections D, for example taper pins, which by penetrating between one, fin and the adjoining one, cause the desired alteration in shape to take place.
  • a jig M provided with a plurality of deforming projections D, for example taper pins, which by penetrating between one, fin and the adjoining one, cause the desired alteration in shape to take place.
  • the said jig can be of the.type that is flat and thus operates perpendicularly on a predetermined area occupied by the fins 3, or of the type that is cylindrical and thus operates tangentially to the exchange element, as shown diagrammatically in Figure 2 : in this case the alteration in shape solely in the top part of the fins 3' enables the fluid to have a certain turbulence, even when the rate of flow is high.
  • FIG 3 shows, in particular, a radiator 20 comprising a plurality of exchange elements 1 stacked in a direction perpendicular to the major sides 2a thereof.
  • the various exchange elements 1 that form the radiator 20 are joined one to the other in the region of the contact surfaces constituted by the finless parts 4 : alternatively, a partition 25 can be interposed between one element and another.
  • the bonding can be effected simply by means of a weld S, utilizing, for example, an arc welder.
  • the extremities of the exchange elements 1 be connected to end manifolds 12 provided, for example, with separation elements 9, an inlet 10 and an outlet 11.
  • the operation of the exchange element 1 described above in a prevalently structural sense, is quite obvious, as is also the operation and assembly of the radiator 20.
  • the first fluid for example liquid to be cooled, flows from A through the passage inside the tubular element between the ribs 5.
  • the latter augment the heat exchange surface of the exchange element; on the other, they strengthen the said element and prevent crushing or swelling.
  • the second fluid commonly air, flows perpendicularly to the direction of the liquid, from B, and goes between the fins 3 causing, thanks to the overall dimension and to the conformation of these, an efficient heat exchanger
  • the parts 4 can be arranged directly in columns and be welded one to the other, as shown in Figure 3, to form a multi-element radiator.
  • the arrangement is immediate of end terminals 12 that guide the flow of the first fluid, for example oil, compressed air, or some other fluid, to where the passages inside the tubular elements 1 are located.
  • the said end manifolds 12 increase the overall solidity of the radiator and can be fitted with a simple welding operation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
EP84830194A 1983-06-30 1984-06-26 Elément pour l'échange de chaleur entre fluides et radiateur fabriqué avec le dit élément Withdrawn EP0132237A3 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
IT348183 1983-06-30
IT833482A IT1174805B (it) 1983-06-30 1983-06-30 Elemento scambiatore di calore tra fluidi e radiatore realizzato con il detto elemento scambiatore
IT348283 1983-06-30
IT03481/83A IT1174804B (it) 1983-06-30 1983-06-30 Procedimento per realizzare uno scambiatore di calore definito da un elemento tubolare alettato

Publications (2)

Publication Number Publication Date
EP0132237A2 true EP0132237A2 (fr) 1985-01-23
EP0132237A3 EP0132237A3 (fr) 1986-02-05

Family

ID=26325406

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84830194A Withdrawn EP0132237A3 (fr) 1983-06-30 1984-06-26 Elément pour l'échange de chaleur entre fluides et radiateur fabriqué avec le dit élément

Country Status (1)

Country Link
EP (1) EP0132237A3 (fr)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0693171A4 (fr) * 1993-03-29 1997-03-19 Melanesia Int Trust Ensemble echangeur de chaleur
WO1999019683A1 (fr) * 1997-10-15 1999-04-22 Dierbeck Robert F Echangeur de chaleur modulaire et son procede de fabrication
US6173493B1 (en) 1998-10-15 2001-01-16 Robert F. Dierbeck Modular heat exchanger and method of making
WO2004068052A1 (fr) 2003-01-31 2004-08-12 Heinz Schilling Kg Echangeur de chaleur a air et a eau a parcours partiels de l'eau
US7178586B2 (en) * 2001-07-13 2007-02-20 Lytron, Inc. Flattened tube cold plate for liquid cooling electrical components
WO2014018198A1 (fr) * 2012-07-27 2014-01-30 General Electric Company Refroidisseur de surface de moteur refroidi par air
WO2014133395A1 (fr) * 2013-03-01 2014-09-04 Norsk Hydro Asa Solution d'ailette associée à un échangeur de chaleur à base de microcanaux
US10208621B2 (en) 2015-12-07 2019-02-19 General Electric Company Surface cooler and an associated method thereof
EP3537083A1 (fr) * 2018-03-07 2019-09-11 United Technologies Corporation Échangeur de chaleur à ailettes-plaques haute température
EP3553446A1 (fr) * 2018-03-23 2019-10-16 United Technologies Corporation Bord d'attaque profilé d'échangeur de chaleur à ailettes et plaque coulée
EP3561423A1 (fr) * 2018-04-19 2019-10-30 United Technologies Corporation Mélange entre canaux d'écoulement d'échangeur de chaleur à plaque moulée
EP3537084A3 (fr) * 2018-03-07 2019-12-18 United Technologies Corporation Ailettes segmentées pour un échangeur de chaleur coulé
US20230194182A1 (en) * 2021-12-17 2023-06-22 Raytheon Technologies Corporation Heat exchanger with partial-height folded fins

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE751963C (de) * 1939-11-21 1953-03-23 Manfred Dipl-Ing Behr Herstellung von Rippenrohrkuehlern
FR1353580A (fr) * 1963-01-15 1964-02-28 Chausson Usines Sa Procédé de fabrication d'échangeur thermique et produit en résultant
US4171015A (en) * 1977-03-28 1979-10-16 Caterpillar Tractor Co. Heat exchanger tube and method of making same

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0693171A4 (fr) * 1993-03-29 1997-03-19 Melanesia Int Trust Ensemble echangeur de chaleur
WO1999019683A1 (fr) * 1997-10-15 1999-04-22 Dierbeck Robert F Echangeur de chaleur modulaire et son procede de fabrication
US6173493B1 (en) 1998-10-15 2001-01-16 Robert F. Dierbeck Modular heat exchanger and method of making
US7178586B2 (en) * 2001-07-13 2007-02-20 Lytron, Inc. Flattened tube cold plate for liquid cooling electrical components
WO2004068052A1 (fr) 2003-01-31 2004-08-12 Heinz Schilling Kg Echangeur de chaleur a air et a eau a parcours partiels de l'eau
WO2014018198A1 (fr) * 2012-07-27 2014-01-30 General Electric Company Refroidisseur de surface de moteur refroidi par air
US9599410B2 (en) 2012-07-27 2017-03-21 General Electric Company Plate-like air-cooled engine surface cooler with fluid channel and varying fin geometry
WO2014133395A1 (fr) * 2013-03-01 2014-09-04 Norsk Hydro Asa Solution d'ailette associée à un échangeur de chaleur à base de microcanaux
CN105556235A (zh) * 2013-03-01 2016-05-04 萨帕股份公司 关于基于微通道的换热器的散热片解决方案
CN105556235B (zh) * 2013-03-01 2018-05-25 萨帕股份公司 关于基于微通道的换热器及其散热片
US10208621B2 (en) 2015-12-07 2019-02-19 General Electric Company Surface cooler and an associated method thereof
EP3537083A1 (fr) * 2018-03-07 2019-09-11 United Technologies Corporation Échangeur de chaleur à ailettes-plaques haute température
EP3537084A3 (fr) * 2018-03-07 2019-12-18 United Technologies Corporation Ailettes segmentées pour un échangeur de chaleur coulé
EP3553446A1 (fr) * 2018-03-23 2019-10-16 United Technologies Corporation Bord d'attaque profilé d'échangeur de chaleur à ailettes et plaque coulée
US10962306B2 (en) 2018-03-23 2021-03-30 Raytheon Technologies Corporation Shaped leading edge of cast plate fin heat exchanger
EP3561423A1 (fr) * 2018-04-19 2019-10-30 United Technologies Corporation Mélange entre canaux d'écoulement d'échangeur de chaleur à plaque moulée
EP3889534A1 (fr) * 2018-04-19 2021-10-06 Raytheon Technologies Corporation Mélange entre canaux d'écoulement d'échangeur de chaleur à plaque moulée
EP3889533A1 (fr) * 2018-04-19 2021-10-06 Raytheon Technologies Corporation Mélange entre canaux d'écoulement d'échangeur de chaleur à plaque moulée
US11209224B2 (en) 2018-04-19 2021-12-28 Raytheon Technologies Corporation Mixing between flow channels of cast plate heat exchanger
US20230194182A1 (en) * 2021-12-17 2023-06-22 Raytheon Technologies Corporation Heat exchanger with partial-height folded fins

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Publication number Publication date
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