EP1363083A1 - Doppeltrohrwärmetauscher mit verstärktem Kontakt - Google Patents

Doppeltrohrwärmetauscher mit verstärktem Kontakt Download PDF

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Publication number
EP1363083A1
EP1363083A1 EP03291109A EP03291109A EP1363083A1 EP 1363083 A1 EP1363083 A1 EP 1363083A1 EP 03291109 A EP03291109 A EP 03291109A EP 03291109 A EP03291109 A EP 03291109A EP 1363083 A1 EP1363083 A1 EP 1363083A1
Authority
EP
European Patent Office
Prior art keywords
ring
tubes
tube
outer tube
conical
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.)
Granted
Application number
EP03291109A
Other languages
English (en)
French (fr)
Other versions
EP1363083B1 (de
Inventor
Jean-Michel Couyade
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.)
Electricite de France SA
Original Assignee
Electricite de France SA
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 Electricite de France SA filed Critical Electricite de France SA
Publication of EP1363083A1 publication Critical patent/EP1363083A1/de
Application granted granted Critical
Publication of EP1363083B1 publication Critical patent/EP1363083B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/101—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using electric energy supply
    • F24H1/102—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using electric energy supply with resistance
    • F24H1/105—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using electric energy supply with resistance formed by the tube through which the fluid flows

Definitions

  • the invention relates to electrical heater arrangements of the heat exchange type between a fluid and a tube in which the fluid circulates.
  • the invention relates more precisely to such arrangements when heat exchange is carried out in an annular space separating two concentric tubes.
  • a another problem to solve is to obtain a good distribution of the currents between the outer tube and the inner tube, by electrical contacts frank and robust.
  • an exchange set thermal for fluid comprising two tubes including an outer tube which surrounds an inner tube, forming between them a circulation space of fluid, electrical connection means between these two tubes so that connecting the assembly to an electrical source generates a heating of the two tubes by Joule effect, characterized in that the electrical connection means between the two tubes include a conical wall and a ring each mounted on a different tube among the inner and outer tubes, the ring resting around the conical wall so that a given differential expansion of the two tubes generates an increase in the support of the conical wall in the Ring.
  • Such a device also allows mechanical centering so automatic concentric tubes.
  • the present two-tube heat exchange device is mainly consists of two sets 100 and 200, one 100 based on the outer tube 110, the other 200 based on the inner tube 210.
  • these two assemblies 100 and 200 are supported one on the other without play. However, during a differential dilation between the outer tube 110 and inner tube 210, a slight sliding is allowed between these two sets at the ends of the tubes.
  • the inner tube 210 is extended at each of its ends by a frustoconical wall 220 (which may be a complete end piece or a wall truncated).
  • the outer tube 110 is itself equipped at its ends with a counter flange 115 which removably receives a flange 130.
  • the flange 130 forms, in its central zone, a ring 135.
  • the frustoconical wall 220 is introduced into the ring 135 enough to ensure support without play.
  • the wall frustoconical 220 penetrates further into the ring 135, thereby generating a more intense ring / tapered wall support.
  • This support is therefore provided both at low temperature and high temperature.
  • Such enhanced support is used for circulation an electric heating current, supplied by simple connection to a source from outside the device.
  • the outer tube 110 is provided, at its end, with a collar annular plane (or counter flange) 115 to which it is fixed by welding on the whole of its periphery.
  • This counter flange 115 also forms a point of contact between the device and a conductive link connected to a source electric. More specifically, an electrical connection is maintained by pinching, clamping or welding, on this counter flange 115 using the head a screw passing through the counter flange.
  • the counter flange 115 is here crossed in total by screws distributed over its periphery, whose main role is to maintain, based on this counter flange 115, a second element 130 also forming a part full and flat annular 132, and carrying in its center the setting ring 135 in touch.
  • This element 130 hereinafter called flange (crazy flange), is shown in front view in Figure 2. It has an interior area with several lights 134 in the center of which is the ring 135. More precisely, the ring 135 is connected to the solid and flat annular part 132 of this flange by three radial profiles 136 between which three slots 134 are formed corresponding.
  • These three sections 136 are distributed at 120 ° from one another, separating between them the lights 134 which extend around the ring 135.
  • the lights 134 extend in an arc around the ring 135 over a width, measured radially, which corresponds to the diameter of the internal section of the outer tube 110.
  • the lights 134 extend the space between the two tubes.
  • the full annular part of this flange 130 covers the counter flange 115 welded to the outer tube 110, and the ring 135 is clamped around the wall or conical end piece 220 carried by the inner tube 210.
  • the liquid to be heated crosses the flange 130 while circulating in its slots 134.
  • Profiles 136 are thin enough to allow deformation radial of ring 135 under the effect of penetration of the conical wall 220. In other words, the profiles 136 compress or extend according to the spacing imposed on the ring 135, without the neck 132 of the flange 130 not is opposed by its rigidity.
  • the initial positioning of the flange 130 is done by tightening the latter against the flange or neck 115 of the outer tube, generating a setting progressive support of the ring 135 on the conical wall 220.
  • This tightening is cold here, tightening sufficient to ensure electrical contact between the two tubes 110 and 210.
  • the ring 135 is here chosen on the inner surface conical, inclination equal to that of the conical wall 220 carried by the tube interior 210. Thus the contact surface is of optimal extent.
  • the conical wall is closed here so that it forms a plug of the inner tube 210.
  • the assembly is mechanically assembled in cold press fit by screws or by any technique whatsoever.
  • the set is removable tube by tube.
  • the inner tube 210 expands a little more than the outer tube 110, mechanical tightening at the level of the ring 135 naturally reinforced on this entire contact surface conical.
  • a current, applied to the counter flanges 115 located at two ends of the device does not circulate only in the wall of the tube exterior 110. It also circulates by contact from the counter-flange 115 to the flange 130, then from the contour of the flange 130 to the ring 135 via profiles 136, from the ring 135 to the inner tube 210 by means of the conical support, then in the inner tube 210.
  • the current return is made along the same route, at the other end of the device.
  • the flange 130 comprising the conical ring 135 can have different shapes, for example round, oval, square, rectangular. She can be secured by welding, soldering or mechanical assembly removable to other mechanical structures such as electric shunt, electrical terminal, flange, piping. It provides electrical continuity by preferably removable contact between two concentric parts.
  • This flange 130 is constructed of all types of conductive materials electricity. It may include on its structure or in its structure metal parts that can be dismantled or not, to ensure good continuity electric, for example copper, aluminum, silver, gold.
  • Profiles 136 supporting ring 135 and allowing continuity electrical are made of all types of electrically conductive materials. They can include on their structure or in their structure parts removable or not, to ensure good continuity electric, for example copper, aluminum, silver, gold. They are either machined in the part, either welded, brazed on the part or mechanically tightened by any technical whatever. These profiles are not limited in number, in dimension and geometry.
  • the ring 135, allowing electrical continuity between the flange 130 and the concentric piece 210 can have different shapes, for example, round, oval, square, rectangular, and is made of all types of materials conductors of electricity. It may have on its structure or in its structure of metal parts which can be dismantled or not, to ensure good electrical continuity, for example copper, aluminum, silver, gold.
  • the internal contact faces are preferably geometrically identical to the faces of the frustoconical end piece 220 of the inner tube 210.
  • the ring 135 is either machined in the part, or welded, brazed on the part or mechanically tightened by any technique whatsoever. It is not limited in dimension.
  • the end piece 220 of the inner tube 210 can have different shapes, for example example, conical, truncated conical, off-centered conical and is made in all type of electrically conductive material.
  • the tip 220 may have on its structure or in its structure metal parts that can be dismantled or not, to ensure good continuity electric, for example copper, aluminum, silver, gold. It is either machined in the part, either welded, brazed on the part, or mechanically tightened by any technical whatever.
  • the tip 220 is not limited in size.
  • the counter-flange 115 can have different shapes, for example round, oval, square, rectangular. It is preferably welded to the tube exterior 110 and is made of any type of conductive material. She may have metal parts on its structure or in its structure removable or not, to ensure good electrical continuity, by example copper, aluminum, silver, gold.
  • the conical wall (220) or the ring (135) is carried by the inner tube (210) and the other of these two elements (220, 135) is carried by a mounted part (130) releasable on the outer tube (110).
  • the element forming the ring (135) in the vicinity of its center carries fixing means at its periphery (132), which are able to cooperate with means (115) located at the periphery of the tube exterior (110).
  • the means for fixing the element (130) carrying the ring (135) are preferably of the releasable type.
  • the means for fixing the element (130) carrying the ring (135) are for example constituted by another neck (132) and means capable of hold this other neck (132) on the neck (115) of the outer tube (110).

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Resistance Heating (AREA)
EP20030291109 2002-05-13 2003-05-12 Doppeltrohrwärmetauscher mit verstärktem Kontakt Expired - Lifetime EP1363083B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0205839 2002-05-13
FR0205839A FR2839603B1 (fr) 2002-05-13 2002-05-13 Dispositif d'echange thermique a double tube, a contactage renforce

Publications (2)

Publication Number Publication Date
EP1363083A1 true EP1363083A1 (de) 2003-11-19
EP1363083B1 EP1363083B1 (de) 2006-06-21

Family

ID=29266096

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20030291109 Expired - Lifetime EP1363083B1 (de) 2002-05-13 2003-05-12 Doppeltrohrwärmetauscher mit verstärktem Kontakt

Country Status (4)

Country Link
EP (1) EP1363083B1 (de)
DE (1) DE60306257T2 (de)
ES (1) ES2266748T3 (de)
FR (1) FR2839603B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110645702A (zh) * 2019-11-05 2020-01-03 东莞珂洛赫慕电子材料科技有限公司 应用于发热模组的水道管及发热模组

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB238648A (en) * 1924-06-10 1925-08-27 Thomas Horace Mcquinn An improved electric water-heater
GB980454A (en) * 1960-12-14 1965-01-13 Ass Elect Ind Improvements in or relating to electrical resistance heaters

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB238648A (en) * 1924-06-10 1925-08-27 Thomas Horace Mcquinn An improved electric water-heater
GB980454A (en) * 1960-12-14 1965-01-13 Ass Elect Ind Improvements in or relating to electrical resistance heaters

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110645702A (zh) * 2019-11-05 2020-01-03 东莞珂洛赫慕电子材料科技有限公司 应用于发热模组的水道管及发热模组

Also Published As

Publication number Publication date
EP1363083B1 (de) 2006-06-21
DE60306257T2 (de) 2007-04-26
FR2839603B1 (fr) 2004-07-23
ES2266748T3 (es) 2007-03-01
FR2839603A1 (fr) 2003-11-14
DE60306257D1 (de) 2006-08-03

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