EP0348299A1 - Wärmeaustauscher - Google Patents

Wärmeaustauscher Download PDF

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Publication number
EP0348299A1
EP0348299A1 EP89401752A EP89401752A EP0348299A1 EP 0348299 A1 EP0348299 A1 EP 0348299A1 EP 89401752 A EP89401752 A EP 89401752A EP 89401752 A EP89401752 A EP 89401752A EP 0348299 A1 EP0348299 A1 EP 0348299A1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
chamber
guide tube
tubes
exchanger according
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
EP89401752A
Other languages
English (en)
French (fr)
Other versions
EP0348299B1 (de
Inventor
Bernard Raymond Schmitt
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.)
INNOVATIONS THERMIQUES
Original Assignee
INNOVATIONS THERMIQUES
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Filing date
Publication date
Application filed by INNOVATIONS THERMIQUES filed Critical INNOVATIONS THERMIQUES
Priority to AT89401752T priority Critical patent/ATE77473T1/de
Publication of EP0348299A1 publication Critical patent/EP0348299A1/de
Application granted granted Critical
Publication of EP0348299B1 publication Critical patent/EP0348299B1/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
    • F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
    • F24H1/225—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating electrical central heating boilers
    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/10—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically
    • F28D7/106—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged one within the other, e.g. concentrically consisting of two coaxial conduits or modules of two coaxial conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/22—Arrangements for directing heat-exchange media into successive compartments, e.g. arrangements of guide plates

Definitions

  • the present invention relates to a heat exchanger which comprises a hollow body having a supply chamber and a discharge chamber connected by at least one guide tube in which extends at least one elongated heating element, for example containing the minus an electrical resistance, so that a fluid can pass from the supply chamber to the evacuation chamber by flowing in the space separating the heating element and the guide tube.
  • said hollow body further has two intermediate chambers connected by at least one connecting tube which is arranged around said guide tube and which connects these intermediate chambers, so that a second fluid can pass from one intermediate chamber in the other, flowing in the space separating said guide tube and said connecting tube.
  • said supply and discharge chambers can advantageously be connected by several guide tubes in each of which extends at least one elongated heating element, said intermediate chambers then being able to be connected by several connection tubes disposed respectively around said guide tubes.
  • said guide tube, said connecting tube and possibly said elongated heating element are preferably cylindrical and coaxial so as to determine annular flow spaces for the fluids.
  • said hollow body comprises a first intermediate partition separating said intermediate chambers and carrying said connecting tube, a second intermediate partition separating one of the intermediate chambers and the supply chamber and a third intermediate partition separating the other intermediate chamber and the evacuation chamber, these second and third partitions carrying said guide tube and one of the end walls of said body being traversed and carrying said elongated heating element.
  • said hollow body may advantageously further comprise two end walls and an outer wall extending parallel to said tubes, said partitions being carried by this outer wall.
  • said spaces are such that the flow of fluid therein is turbulent.
  • means are preferably provided for centering said guide tube in said connecting tube so as to maintain a constant distance between these tubes.
  • these centering means are formed by local deformations of one of said tubes, deformations which bear on the other tube.
  • said guide tube is preferably tightly connected to the wall of said supply chamber through which it passes and / or to the wall of said discharge chamber through which it passes, via 'A deformable means in the direction of the length of this guide tube.
  • the aforementioned deformable means is constituted by an annular or tubular bellows tightly connected on the one hand to the guide tube and on the other hand to the wall of the aforementioned chamber.
  • the heat exchanger shown in the figures and generally identified by the reference 1 comprises a hollow body 2 which has a longitudinal cylindrical wall 3 as well as radial end walls 4 and 5.
  • the interior volume of the hollow body 2 is, longitudinally, divided into four successive chambers 6, 7, 8, 9 which are respectively separated by radial partitions 10, 11 and 12.
  • the cylindrical wall 3 of the body 2 is longitudinally divided into parts provided with flanges on which these radial partitions are fixed respectively.
  • the intermediate chambers 7 and 8 are connected, in the example, by two longitudinal cylindrical tubes 13 and 14 which extend through the intermediate radial partition 11 and which are carried, preferably in leaktight manner, by the latter, the ends of these connecting tubes 13 and 14 being at a distance from the radial partitions 10 and 12.
  • the end chambers 6 and 9 are connected by cylindrical longitudinal guide tubes 15 and 16 which extend through the connection tubes 13 and 14 being coaxial with them and which extend through the radial walls 10 and 12, the guide tubes 15 and 16 being carried by these radial walls 10 and 12 in a sealed manner and their ends being respectively at a distance from the end walls 4 and 5 of the hollow body 2.
  • the intermediate chambers 7 and 8 are connected by the annular spaces 17 and 18 separating respectively the connecting tubes 13 and 14 and the guide tubes 15 and 16.
  • longitudinal elongated heating elements 19 and 20 which also extend through the end chamber 6 and the end wall 4 and which are carried by this last. These elongated heating elements contain electrical resistances at least in the region of the guide tubes 15 and 16.
  • end chambers 6 and 9 are connected by the annular passages 21 and 22 separating the elongated heating elements 19 and 20 and the guide tubes 15 and 16.
  • the wall 3 of the cylindrical body 2 carries on the one hand radial pipes 23 and 24 which make it possible to connect the end chambers 6 and 9 to a first external circuit and on the other hand radial pipes 25 and 26 which allow to connect the intermediate chambers 7 and 8 to a second external circuit.
  • the heat exchanger 1 described above and shown in the figures works and can be used as follows.
  • a first fluid such as a liquid circulating in the aforementioned first circuit enters the supply chamber 6 through the radial tube 23, flows into the annular spaces 21 and 22 separating respectively the heating elements 19 and 20 and the guide tubes 15 and 16 to the evacuation chamber 9, from which it emerges through the radial tube 24.
  • the first fluid is heated during its passage through the annular spaces 21 and 22.
  • a second fluid such as a liquid circulating in the aforementioned second circuit enters the first intermediate chamber 7 through the radial tube 25, flows through the annular spaces 17 and 18 separating respectively the connecting tubes 13 and 14 and the tubes guides 15 and 16 to the second intermediate chamber 8 to exit therefrom through the radial tube 26.
  • this fluid which circulates in the first aforementioned circuit, is passed through annular spaces 21 and 22 in which it is heated by the electrical resistance of the elongated heating elements 19 and 20 and, to cool it, it is done pass through these annular spaces 21 and 22 and at the same time a second cooling fluid, which circulates in the aforementioned second circuit, is passed through the annular spaces 17 and 18.
  • the length of the connecting tubes 13 and 14, which determines the length of the annular passages 17 and 18, constitutes one of the parameters for determining the heat flux between the two fluids.
  • the elongated heating elements 19 and 20 are carried by the end wall 4 of the hollow body 2 and extend through the supply chamber 6 and into the guide tubes 15 and 16.
  • these elongated heating elements 19 and 20 are suitably centered.
  • the elongated heating elements 19 and 20 and the guide tubes 15 and 16 can slide longitudinally relative to each other in order to absorb their deformations due to temperature variations.
  • connecting tubes 13 and 14 pass through and are carried by the intermediate partition 11.
  • the connecting tubes 13 and 14 are also provided with local deformations 28 extending inwards and against which the guide tubes 15 and 16 bear respectively.
  • the guide tubes 15 and 16 are respectively fixed to the walls 10 and 12 of the hollow body 2 in a sealed manner, for example by welding.
  • sleeves 29 are tightly fixed against the partition 12 and surround the guide tubes 15 and 16.
  • Sleeves 30 surround and are tightly fixed to these guide tubes, at a distance sleeves 29.
  • the heat exchanger which has just been described is designed not only to allow several modes of heat transfer but also so that the parts which compose it undergo limited mechanical stresses.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Compression-Type Refrigeration Machines With Reversible Cycles (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
EP89401752A 1988-06-22 1989-06-21 Wärmeaustauscher Expired - Lifetime EP0348299B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89401752T ATE77473T1 (de) 1988-06-22 1989-06-21 Waermeaustauscher.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8808396A FR2633378B1 (fr) 1988-06-22 1988-06-22 Echangeur de chaleur a deux flux
FR8808396 1988-06-22

Publications (2)

Publication Number Publication Date
EP0348299A1 true EP0348299A1 (de) 1989-12-27
EP0348299B1 EP0348299B1 (de) 1992-06-17

Family

ID=9367596

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89401752A Expired - Lifetime EP0348299B1 (de) 1988-06-22 1989-06-21 Wärmeaustauscher

Country Status (5)

Country Link
EP (1) EP0348299B1 (de)
AT (1) ATE77473T1 (de)
DE (1) DE68901815T2 (de)
ES (1) ES2033105T3 (de)
FR (1) FR2633378B1 (de)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR648964A (fr) * 1928-02-14 1928-12-17 Perfectionnements aux échangeurs de chaleur tubulaires
US2775682A (en) * 1955-08-12 1956-12-25 Turbine Equipment Company Electric fluid heater
FR1569319A (de) * 1967-06-20 1969-05-30
FR2333206A1 (fr) * 1975-11-27 1977-06-24 Giraud Gabriel Mini-chaufferie pour maisons individuelles, immeubles, usages industriels et autres
CH593470A5 (en) * 1975-07-10 1977-11-30 Schulthess Ad Maschinenfabrik Heat exchanger, esp. for use in textile dyeing - has automatic completely independently regulated heating and cooling systems
US4254826A (en) * 1979-09-11 1981-03-10 Pvi Industries Inc. Modular heat exchanger
EP0031919A1 (de) * 1979-12-21 1981-07-15 Hoechst Aktiengesellschaft Ringspalt-Rohrbündel-Wärmetauscher
US4440217A (en) * 1982-06-10 1984-04-03 Stieler Scott M Counterflow heat exchanger
DE3318722A1 (de) * 1983-05-21 1984-11-22 K.H. Michael Dipl.-Ing. Schunk (FH), 7441 Wolfschlugen Waermetauscher
DE3419442A1 (de) * 1983-05-25 1984-12-20 Kogata Gasu Reibo-gijutsu Kenkyu Kumiai, Tokio/Tokyo Waermetauscher

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR648964A (fr) * 1928-02-14 1928-12-17 Perfectionnements aux échangeurs de chaleur tubulaires
US2775682A (en) * 1955-08-12 1956-12-25 Turbine Equipment Company Electric fluid heater
FR1569319A (de) * 1967-06-20 1969-05-30
CH593470A5 (en) * 1975-07-10 1977-11-30 Schulthess Ad Maschinenfabrik Heat exchanger, esp. for use in textile dyeing - has automatic completely independently regulated heating and cooling systems
FR2333206A1 (fr) * 1975-11-27 1977-06-24 Giraud Gabriel Mini-chaufferie pour maisons individuelles, immeubles, usages industriels et autres
US4254826A (en) * 1979-09-11 1981-03-10 Pvi Industries Inc. Modular heat exchanger
EP0031919A1 (de) * 1979-12-21 1981-07-15 Hoechst Aktiengesellschaft Ringspalt-Rohrbündel-Wärmetauscher
US4440217A (en) * 1982-06-10 1984-04-03 Stieler Scott M Counterflow heat exchanger
DE3318722A1 (de) * 1983-05-21 1984-11-22 K.H. Michael Dipl.-Ing. Schunk (FH), 7441 Wolfschlugen Waermetauscher
DE3419442A1 (de) * 1983-05-25 1984-12-20 Kogata Gasu Reibo-gijutsu Kenkyu Kumiai, Tokio/Tokyo Waermetauscher

Also Published As

Publication number Publication date
DE68901815T2 (de) 1992-12-17
FR2633378A1 (fr) 1989-12-29
EP0348299B1 (de) 1992-06-17
ATE77473T1 (de) 1992-07-15
ES2033105T3 (es) 1993-03-01
FR2633378B1 (fr) 1991-01-11
DE68901815D1 (de) 1992-07-23

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