[go: up one dir, main page]

EP0007929B1 - Eléments de transfert de chaleur et méthode de fabrication de ces éléments - Google Patents

Eléments de transfert de chaleur et méthode de fabrication de ces éléments Download PDF

Info

Publication number
EP0007929B1
EP0007929B1 EP19780300275 EP78300275A EP0007929B1 EP 0007929 B1 EP0007929 B1 EP 0007929B1 EP 19780300275 EP19780300275 EP 19780300275 EP 78300275 A EP78300275 A EP 78300275A EP 0007929 B1 EP0007929 B1 EP 0007929B1
Authority
EP
European Patent Office
Prior art keywords
heat transfer
wall member
base wall
thermal conductivity
transfer element
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.)
Expired
Application number
EP19780300275
Other languages
German (de)
English (en)
Other versions
EP0007929A1 (fr
Inventor
Maxwell Wingate Davidson
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
Application filed by Individual filed Critical Individual
Priority to DE7878300275T priority Critical patent/DE2862149D1/de
Priority to EP19780300275 priority patent/EP0007929B1/fr
Publication of EP0007929A1 publication Critical patent/EP0007929A1/fr
Application granted granted Critical
Publication of EP0007929B1 publication Critical patent/EP0007929B1/fr
Expired legal-status Critical Current

Links

Images

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
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/14—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by endowing the walls of conduits with zones of different degrees of conduction of heat
    • 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

Definitions

  • the present invention relates to heat transfer elements, and particularly to heat transfer panels or tubes serving for the conduction of heat between zones on either side thereof.
  • Heat transfer elements in the form of plain or curved panels are known, which panels alone or in combination serve to form a barrier between zones of hot and cold fluids while being adapted to transmit heat by conduction from the hot zone to the cold zone.
  • Elements in the form of tubes or pipes operate similarly.
  • these elements are made of a material having a suitably high coefficient of thermal conductivity. Where there is a large boundary between the zones, as is usually the case for effective heat transfer, a large element area is required and since material of high thermal conductivity are relatively more expensive it is a disadvantage of these barriers that they can be costly.
  • the present invention is characterised by having a plurality of apertures extending through a base wall member of the heat transfer element to the opposed outer surfaces of the wall member, said apertures widening as they approach the outer surfaces of the wall member, so as to have a waisted middle part, said apertures being filled with a material of higher thermal conductivity than the material of the wall member, and a layer of higher thermal conductivity than the base wall material on at least one outer surface of the wall member.
  • the transversely extending portion has parts projecting from at least one outer surface of the wall portion: these parts can constitute protuberances for creating turbulent fluid flow at said one outer surface of the wall portion.
  • the panel should be made of materials permitting operation at elevated temperature.
  • the higher thermal conductivity part can be made of a noble metal, silver, copper or other material of suitably high thermal conductivity.
  • the outer surfaces of the wall member can be of any suitable configuration, but preferably at least one surface is of undulating form with the material filled bores extending from the troughs and crests of the undulations.
  • the base wall member is preferaby made from a plastics material for cheapness, for example a polymer.
  • the bore fillings project as rods from at least one outer surface of the wall.
  • the heat transfer element By having a major portion of the heat transfer element made from relatively cheap plastics material rather than a more expensive heat conducting metal e.g. copper, a considerable saving in cost is possible with the element, and particularly in accordance with the present invention by having the metal-filled through- apertures in the plastics panel waisted form and by providing a thin layer of heat conducting metal on the outer surfaces of the panel, efficient heat transfer is possible at particularly low cost.
  • a method of making a heat transfer element comprises forming a base wall member from one material, forming apertures in the wall member extending transversely between the outer surfaces thereof arranging that said apertures widen as they approach the outer surfaces of the wall member so as to have a waisted middle part, filling said apertures with another material of higher thermal conductivity than the material of the base wall member and additionally applying a layer of material to at least one surface of the wall member, said layer being formed from material of higher thermal conductivity than the base wall material.
  • layers of higher thermal conductivity material are formed on both outer wall surfaces.
  • a heat transfer panel 1 of wall part is fabricated from a sheet of plastics material 2 (thermosetting or thermoplastic), polymerised material, acetylene, vinyl or similar, glass or ceramic material.
  • the panel can be moulded to the required form, and in the embodiment shown has a corrugated form, but the surfaces 3 could be outer surfaces of flat or of other configuration.
  • the panel 1 has a corrugated form having equal corrugation pitch P and equal corrugation amplitude A.
  • the corrugations may have unequal pitch and unequal amplitude.
  • the corrugations 3 extend longitudinally but could extend transversely or may be inclined.
  • the panel 1 could be provided with dimples or recesses, on one or both sides, and these may extend in parallel rows or may be arranged in a reverse or alternating manner.
  • a series of through-bores 4 is provided in the panel 1 and extending transversely at predetermined intervals and spacings between desired parts of the outer surfaces of the panel 1.
  • the through-bores 4 can be provided at the crests and troughs of the corrugated panel.
  • These through-bores 4 are fully filled with material which has a high thermal conductivity and which is capable of resisting corrosion (i.e. is a noble material).
  • the through bores widen adjacent the outer- surfaces.
  • the filling material can be a noble metal such as silver (with the base panel suitably a polyamide sheet) which metal has a coefficient of thermal conductivity (1.00 (gramme) calories cm per sec cm 2 per degree C) very many times greater than plastics materials (polymers: 4.0-6.0 x 10- 4 calories cm per sec per cm 2 per degree (C).
  • a noble metal such as silver (with the base panel suitably a polyamide sheet) which metal has a coefficient of thermal conductivity (1.00 (gramme) calories cm per sec cm 2 per degree C) very many times greater than plastics materials (polymers: 4.0-6.0 x 10- 4 calories cm per sec per cm 2 per degree (C).
  • a layer 5 of high thermal conductivity and non-corrosive material is provided on at least one outer surface of the panel as shown in Fig. 3, and preferably on both outer surfaces.
  • a layer 5 may be a silver layer.
  • the metal filled bores 4 widen adjacent the panel outer surfaces instead of being plain cylindrical more efficient heat transfer is possible.
  • the filled bores 4 and layers 5 can be formed for example by electro-plating or dipping etc.
  • the above heat transfer panel according to the present invention has the high thermal conductivity material 4, 5 positioned at the most useful locations in the panel 1. Since plastics materials are considerably cheaper and more easily worked than noble metals, and stainless steels, the above panel will be cheaper than a panel made solely of the metal, but the panel will have higher efficiency of heat transfer than a pure plastics panel.
  • the material of the bores 4 is arranged to extend as rods 6 from one or both outer surfaces of the panel 1.
  • These projecting rods serve as turbulence promoters, droplet promoters for condensing vapours and thermal collectors or distributors to the fluids in contact or "en passant".

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Laminated Bodies (AREA)

Claims (12)

1. Un élément pour transfert de chaleur composé d'un member paroi de base (2), un grand nombre d'orifices (4) s'étendant à travers le membre paroi de base jusqu'aux surfaces extérieures opposées dudit membre, lesdits orifices étant remplis d'une matière dont la conductivité thermique soit plus haute que celle de la matière du membre paroi de base, caractérisé par le fait que lesdits orifices (4) s'élargissent à mesure qu'ils s'approchent des surface extérieures (3) du membre paroi de base (2) de sorte qu'ils prennent une forme resserrée au milieu, et par le fait qu'une couche (5) de matière de conductivité thermique plus haute que celle de la matière du membre parois de base se trouve sur au moins une des surfaces extérieures (3) du membre paroi de base (2).
2. Un élément pour transfert de chaleur comme décrit dans prétention 1, caractérisé par le fait que le bourrage des orifices sorte d'au moins une des surfaces extérieures du membre paroi de base (2).
3. Un élément pour transfert de chaleur comme décrit dans prétention 1 ou 2, caractérisé par le fait que la matière de conductivité thermique supérieure soit un métal capable de résister à la corrosion.
4. Un élément pour transfert de chaleur comme décrit dans n'importe laquelle des prétentions trouvées dessus, caractérisé par le fait que chaque surface extérieure (3) du membre paroi de base (2) soit couverte d'une couche (5) de matière de haute conductivité thermique.
5. Un élément pour transfert de chaleur comme décrit dans n'importe laquelle des prétentions 1 à 3 caractérisé par le fait qu'au moins une surface (3) soit de forme ondulée, les orifices remplis de bourrage s'étendant des creux et des crêtes des ondulations.
6. Un élément pour transfert de chaleur comme décrit dans n'importe laquelle des prétentions précédentes, caractérisé par le fait que le membre paroi de base (2) soit fait de matière plastique.
7. Un élément pour transfert de chaleur comme décrit dans prétention 6, caractérisé par le fait que la matière plastique soit un polymère.
8. Un élément pour transfert de chaleur comme décrit dans n'importe laquelle des prétentions précédentes, caractérisé par le fait que la matière de conductivité thermique supérieure soit un métal noble.
9. Un élément pour transfert de chaleur comme décrit dans prétention 8, caractérisé par le fait que le métal noble soit l'argent.
10. Une méthode pour la fabrication d'un élément pour transfert de chaleur composée de: la formation d'un membre paroi de base (2) d'une matière, la formation d'orifices (4) dans ledit membre paroi de base, s'étendant transversalement d'une surface extérieure du membre à l'autre, le remplissage desdits orifices d'une matière dont la conductivité thermique soit supérieure à celle de la matière du membre paroi de base, caractérisé par le fait que lesdits orifices s'élargissent en s'approchant des surfaces extérieures du membre paroi de base, de sorte qu'ils prennent une forme resserrée par le milieu, et en plus l'application d'une couche (5) de matière à au moins une des surfaces (3) du membre paroi de base (2), ladite couche étant formée d'une matière dont la conductivité thermique soit supérieure à celle de la matière du membre paroi de base.
11. Une méthode, comme décrite dans prétention 10, caractérisée par le fait que lesdites couches de matière soient formées sur toutes les deux surfaces extérieures.
12. Une méthode comme décrite dans prétention 10 ou 11 caractérisée par le fait que la matière de conductivité thermique supérieure soit appliquée par l'argenture galvanique ou par l'immersion.
EP19780300275 1978-08-10 1978-08-10 Eléments de transfert de chaleur et méthode de fabrication de ces éléments Expired EP0007929B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE7878300275T DE2862149D1 (en) 1978-08-10 1978-08-10 Heat transfer elements and method for the manufacture of such elements
EP19780300275 EP0007929B1 (fr) 1978-08-10 1978-08-10 Eléments de transfert de chaleur et méthode de fabrication de ces éléments

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19780300275 EP0007929B1 (fr) 1978-08-10 1978-08-10 Eléments de transfert de chaleur et méthode de fabrication de ces éléments

Publications (2)

Publication Number Publication Date
EP0007929A1 EP0007929A1 (fr) 1980-02-20
EP0007929B1 true EP0007929B1 (fr) 1983-01-12

Family

ID=8185993

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19780300275 Expired EP0007929B1 (fr) 1978-08-10 1978-08-10 Eléments de transfert de chaleur et méthode de fabrication de ces éléments

Country Status (2)

Country Link
EP (1) EP0007929B1 (fr)
DE (1) DE2862149D1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1572680A (en) * 1977-08-11 1980-07-30 United Wire Group Ltd Heat transfer elements
US5653280A (en) * 1995-11-06 1997-08-05 Ncr Corporation Heat sink assembly and method of affixing the same to electronic devices
DE102004042210A1 (de) * 2004-09-01 2006-03-30 Rehau Ag + Co. Wärmetauscher zur Beheizung von Reinigungsflüssigkeit in einem Kraftfahrzeug

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR962422A (fr) * 1950-06-10
GB656811A (en) * 1947-10-27 1951-09-05 Bata Improvements in or relating to radiators for heating buildings
US3825063A (en) * 1970-01-16 1974-07-23 K Cowans Heat exchanger and method for making the same
DE2637511C3 (de) * 1976-08-20 1980-01-31 Gerhard 8000 Muenchen Hahn Wärmetauscher oder Wärmetauschwand

Also Published As

Publication number Publication date
EP0007929A1 (fr) 1980-02-20
DE2862149D1 (en) 1983-02-17

Similar Documents

Publication Publication Date Title
EP0000992B1 (fr) Eléments de transfert de chaleur et le procédé de fabrication de tels éléments
US4705105A (en) Locally inverted fin for an air conditioner
EP0640037B1 (fr) Assemblage de feuilles ondulees
EP0115455B1 (fr) Garniture engendrant un écoulement sinueux pour permettre le transfert de chaleur et de matière par évaporation
JPH03181796A (ja) 熱交換器のプレートフィン構造
EP0188314B1 (fr) Procédé pour fixer un tube dans une ailette
JPS62110701A (ja) 交換塔用充填要素
EP1048918B1 (fr) Evaporateur
EP0311670A1 (fr) Echangeur thermique a plaques.
US4789027A (en) Ribbed heat exchanger
EP0007929B1 (fr) Eléments de transfert de chaleur et méthode de fabrication de ces éléments
US4492268A (en) Condenser
US4253519A (en) Enhancement for film condensation apparatus
GB1587730A (en) Heat transfer elements
CA1114589A (fr) Elements echangeurs de chaleur
EP0005959B1 (fr) Ailettes pour échangeur de chaleur et dispositif pour leur fabrication
WO2001063665A1 (fr) Dissipateur thermique convectif
JPS58205094A (ja) 熱交換素子
CN101212881A (zh) 散热装置
CN221240651U (zh) 一种适用于ptc加热器使用的散热器
EP3399271B1 (fr) Échangeur de chaleur
CN216183373U (zh) 锯齿形旁流密封板
CN100334719C (zh) 传导叶片
JPS57117788A (en) Heat exchanger
JPH0624695Y2 (ja) 熱交換器ユニット

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): BE CH DE FR LU NL SE

17P Request for examination filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): BE CH DE FR LU NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19830112

Ref country code: NL

Effective date: 19830112

Ref country code: FR

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19830112

Ref country code: CH

Effective date: 19830112

Ref country code: BE

Effective date: 19830112

REF Corresponds to:

Ref document number: 2862149

Country of ref document: DE

Date of ref document: 19830217

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19830831

EN Fr: translation not filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19850131

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19880503

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT