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DE3320474A1 - Heat exchanger for liquid media - Google Patents

Heat exchanger for liquid media

Info

Publication number
DE3320474A1
DE3320474A1 DE19833320474 DE3320474A DE3320474A1 DE 3320474 A1 DE3320474 A1 DE 3320474A1 DE 19833320474 DE19833320474 DE 19833320474 DE 3320474 A DE3320474 A DE 3320474A DE 3320474 A1 DE3320474 A1 DE 3320474A1
Authority
DE
Germany
Prior art keywords
flow tube
heat exchanger
energy supply
wall
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.)
Withdrawn
Application number
DE19833320474
Other languages
German (de)
Inventor
Wilhelm 8741 Nordheim Klemm
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.)
Forbach GmbH and Co KG
Original Assignee
Forbach GmbH and Co KG
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 Forbach GmbH and Co KG filed Critical Forbach GmbH and Co KG
Priority to DE19833320474 priority Critical patent/DE3320474A1/en
Publication of DE3320474A1 publication Critical patent/DE3320474A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/42—Heating elements having the shape of rods or tubes non-flexible
    • H05B3/48—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material
    • H05B3/50—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material heating conductor arranged in metal tubes, the radiating surface having heat-conducting fins
    • 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
    • F24H1/12—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 in which the water is kept separate from the heating medium
    • F24H1/14—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 in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
    • F24H1/142—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 in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form using electric energy supply

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)

Abstract

Heat exchanger for liquid media, consisting of a through-flow tube (2) for conducting the medium to be warmed, and at least one tubular jacket heater (3) arranged as energy supply device parallel to the through-flow tube (2). In order to improve the heat transfer in the tubular jacket heater (3) to the jacket flow tube (2), the tubular jacket heater (3) is pressed into the outer wall (4) of the through-flow tube (2) and is virtually completely embraced or enclosed by the wall of the through-flow tube (2). <IMAGE>

Description

Wärmetauscher für flüssige Medien Heat exchanger for liquid media

Die Erfindung betrifft einen Wärmetauscher für flüssige Medien nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a heat exchanger for liquid media the preamble of claim 1.

Ein Wärmetauscher für flüssige Medien (elektrischer Durchlauferhitzer) dieser Art ist aus der DE-AS 24 54 920 bekannt. Bei diesem Durchlauferhitzer verlaufen der oder die Mantelrohrheizkörper parallel zum Durchflußrohr. Der oder die Mantelrohrheizkörper stehen dabei mit dem Durchflußrohr nur in den Berührungsbereichen unmittelbar in Wärmetauscherverbindung, während der weitaus größere Flächenbereich des jeweiligen Mantelrohrheizkörpers keinerlei Berührung mit dem Durchflußrohr hat. Dies hat zur Folge, daß die Wärmeabführung vom Mantelrohrheizkörper zum Durchflußrohr äußerst unbefriedigend ist und damit der Wirkungsgrad eines solcher Art ausgebildeten Durchlauferhitzers zu Wünschen übrig läßt.A heat exchanger for liquid media (electric water heater) this type is known from DE-AS 24 54 920. In this water heater run the tubular heating element (s) parallel to the flow tube. The tubular heating element (s) stand directly in with the flow tube only in the areas of contact Heat exchanger connection, while the much larger surface area of the respective Jacketed heating element has no contact with the flow tube. This has to As a result, the heat dissipation from the tubular heating element to the flow tube is extremely high is unsatisfactory and thus the efficiency of a water heater designed in this way leaves something to be desired.

Aufgabe der Erfindung ist es, einen Wärmetauscher der eingangs genannten Art weiter zu verbessern, so daß einerseits die Wärmeübertragung vom Mantelrohrheizkörper zum Durchflußrohr begunstigt und der Verlust durch Strahlungswärme vermindert wird und andererseits ein konstruktiver Gesamtaufbau gefunden wird, der eine rationelle Fertigung des Durchlauferhitzers zuläßt.The object of the invention is to provide a heat exchanger of the type mentioned at the beginning Kind to further improve, so that on the one hand the heat transfer from the tubular heating element to the flow tube and the loss due to radiant heat is reduced and on the other hand, a constructive overall structure is found which is a rational one Manufacture of the water heater allows.

Die Lösung dieser Aufgabe gemäß der Erfindung ist dem kennzeichnenden Teil des Patentanspruchs 1 zu entnehmen.The solution to this problem according to the invention is the characteristic one Part of claim 1 can be found.

Zweckmäßige weitere Ausgestaltungen des Gegenstandes der Erfindung sind in den Unteransprüche angegeben.Expedient further refinements of the subject matter of the invention are specified in the subclaims.

Dadurch, daß bei diesem neuartigen Wärmetauscher der größte Teil der Mantelfläche des Rohrheizkörpers in inniger Berührung mit dem Durchflußrohr steht, wird eine überaus gute Wärmeübertragung vom Mantelrohrheizkörper zum Durchflußrohr bei einem Minimum an Strahlungswärmeverlusten erreicht.-Desweiteren läßt sich ein solcher Wärmetauscher rationell und damit kostensenkend herstellen.The fact that in this new type of heat exchanger most of the The outer surface of the tubular heating element is in intimate contact with the flow tube, there is an extremely good heat transfer from the tubular heating element to the flow tube achieved with a minimum of radiant heat losses Such heat exchangers can be produced efficiently and thus in a cost-saving manner.

An Hand von zwei in der Zeichnung dargestellten bevorzugten Ausführungsbeispielen wird die Erfindung nachfolgend näher beschrieben. In den beiden Figuren ist jeweils ein Wärmetauscher für flüssige Medien (Durchlauferhitzer) im Querschnitt dargestellt.On the basis of two preferred exemplary embodiments shown in the drawing the invention is described in more detail below. In each of the two figures a heat exchanger for liquid media (water heater) shown in cross section.

Der in Fig. 1 dargestellte Wärmetauscher 1 besteht aus einem Durchflußrohr 2, welches die zu erhitzende Flüssigkeit führt, und einem elektrischen Mantelrohrheizkörper 3 üblicher Bauart als Energiezuführungseinrichtung. Der Mantelrohrheizkörper 3 ist zentrisch zum Durchflußrohr 2 angeordnet und ist in dessen äußerer Wandungsfläche 4 so eingedrückt bzw. eingepreßt, daß das Durchflußrohr 2 den Mantelrohrheizkörper 3 nahezu vollständig umgreift bzw.The heat exchanger 1 shown in Fig. 1 consists of a flow tube 2, which carries the liquid to be heated, and an electric tubular heater 3 conventional design as an energy supply device. The tubular heating element 3 is arranged centrally to the flow tube 2 and is in its outer wall surface 4 so pressed or pressed in that the flow tube 2 the tubular heater 3 almost completely encompassed or

umschließt. Beim Wärmetauscherkörper 1' nach Fig. 2 sind im zentrischen Durchflußrohr 2' drei Mantelrohrheizkörper 5, 6, 7 in dessen äußerer Wandungsfläche 4 so eingedrückt, daß sie von der eingedrückten Rohrwandung teilweise umgriffen werden. Die drei Mantelrohrheizkörper 5, 6, 7 sind dabei in einem Winkel von je 120 Winkelgrade zueinander angeordnet. Um die im Durchflußrohr 2' eingedrückten Mantelrohrheizkörper 5, 6, 7 ist zweckmäßig ein diese Einheit umschließendes Hüllrohr 8 geschoben. Dadurch wird ein äußerst kompakter Wärmetauscherkörper 1' geschaffen. Es wäre auch vorteilhaft, um die Wärmeabstrahlung nach außen hin weiter zu verringern, die Innenwandung des Hüllrohres 8 mit einer reflektierenden Beschichtung zu versehen.encloses. When the heat exchanger body 1 'according to Fig. 2 are in the central Flow tube 2 'three tubular heating elements 5, 6, 7 in its outer wall surface 4 pressed in so that they partially encompassed the pressed pipe wall will. The three tubular heating elements 5, 6, 7 are at an angle of each 120 degrees to each other arranged. To the depressed in the flow tube 2 ' Jacketed tubular heating element 5, 6, 7 is expediently a jacket tube enclosing this unit 8 pushed. This creates an extremely compact heat exchanger body 1 '. It would also be advantageous to further reduce the heat radiation to the outside, to provide the inner wall of the cladding tube 8 with a reflective coating.

Claims (6)

Patentansprü che 1.Wärmetauscher für flüssige Medien, bestehend aus einem Durchflußrohr zur rührung des zu erwärmenden Mediums und mindestens einer, parallel zu dem Durchflußrohr angeordneten Energiezuführungseinrichtung, z.B. Mantei rohrheizkörper, dadurch gekennzeichnet, daß der oder die Energiezuführungseinrichtungen (3,5,6,7) in die äußere Wandung (4,4') des Durchflußrohres (2,2') eingedrückt und von der Wandung des Durchflußrohres (2,2') teilweise bis nahezu vollständig umgriffen bzw. umschlossen sind. Claims che 1. Heat exchanger for liquid media, consisting of a flow tube for stirring the medium to be heated and at least one, energy supply means arranged parallel to the flow tube, e.g. Mantei tubular heating element, characterized in that the energy supply device or devices (3,5,6,7) pressed into the outer wall (4,4 ') of the flow tube (2,2') and from the wall of the flow tube (2, 2 ') partially to almost completely encompassed or are enclosed. 2. Wärmetauscher nach Anspruch 1, dadurch gekennzeichnet, daß die als Mantel rohrheizkörper ausgebildete Energiezuführungsei nrichtung (3), vorzugsweise zentrisch zum Durchflußrohr (2) angeordnet ist.2. Heat exchanger according to claim 1, characterized in that the formed as a jacket tubular heater energy supply device (3), preferably is arranged centrally to the flow tube (2). 3. Wärmetauscher nach Anspruch 1 mit mehreren Energiezuführungseinrichtungen, dadurch gekennzeichnet, daß das Durchflußrohr (2') vorzugsweise zentrisch zu den rohrartigen Energiezuführungsei nrichtungen (5,6,7) angeordnet ist.3. Heat exchanger according to claim 1 with several energy supply devices, characterized in that the flow tube (2 ') is preferably centric to the tubular energy supply devices (5,6,7) is arranged. 4. Wärmetauscher nach Anspruch 1 mit mehreren Energiezuführungseinrich tungen (5,6,7), dadurch gekennzeichnet, daß diese vorzugsweise zentrisch in die Wandung (4') des Durchflußrohres (2') eingedrückt sind.4. Heat exchanger according to claim 1 with several Energiezuführungseinrich lines (5,6,7), characterized in that it is preferably centered in the Wall (4 ') of the flow tube (2') are pressed in. 5. Wärmetauscher nach Anspruch 3 oder 4, dadurch gekennzeichnet, daß die in dem Durchflußrohr (2') eingedrückten Energiezuführungseinrichtungen (5,6,7) durch ein Hüllrohr (8) umschlossen bzw. verkleidet sind.5. Heat exchanger according to claim 3 or 4, characterized in that the energy supply devices (5,6,7) pressed into the flow tube (2 ') are enclosed or covered by a jacket tube (8). 6. Wärmetauscher nach Anspruch 5, dadurch gekennzeichnet, daß die Innenwandung des Hüllrohres (8) mit einer reflektierenden Beschichtung versehen ist.6. Heat exchanger according to claim 5, characterized in that the The inner wall of the cladding tube (8) is provided with a reflective coating is.
DE19833320474 1983-06-07 1983-06-07 Heat exchanger for liquid media Withdrawn DE3320474A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19833320474 DE3320474A1 (en) 1983-06-07 1983-06-07 Heat exchanger for liquid media

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19833320474 DE3320474A1 (en) 1983-06-07 1983-06-07 Heat exchanger for liquid media

Publications (1)

Publication Number Publication Date
DE3320474A1 true DE3320474A1 (en) 1984-12-13

Family

ID=6200823

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19833320474 Withdrawn DE3320474A1 (en) 1983-06-07 1983-06-07 Heat exchanger for liquid media

Country Status (1)

Country Link
DE (1) DE3320474A1 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2599479A1 (en) * 1986-05-27 1987-12-04 Walter Jean Jacques Electric boiler
US5857515A (en) * 1995-04-12 1999-01-12 David M. Skupien Heat exchanging device
EP1215939A2 (en) * 2000-12-06 2002-06-19 Strix Limited Liquid heating vessels
EP1321708A3 (en) * 2001-12-20 2004-04-21 Eichenauer Heizelemente GmbH &amp; Co.KG Device for heating a liquid
DE102005050203A1 (en) * 2005-10-18 2007-04-19 Eichenauer Heizelemente Gmbh & Co. Kg Flow heater manufacturing method for use in e.g. coffee machine, involves soldering support bar with solder, where melting point of support bar is higher than melting point of solder for soldering heater with solder
DE102011012769B4 (en) 2010-05-12 2022-01-20 Türk & Hillinger GmbH High performance instantaneous water heater

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2599479A1 (en) * 1986-05-27 1987-12-04 Walter Jean Jacques Electric boiler
US5857515A (en) * 1995-04-12 1999-01-12 David M. Skupien Heat exchanging device
EP1215939A2 (en) * 2000-12-06 2002-06-19 Strix Limited Liquid heating vessels
EP1215939B1 (en) * 2000-12-06 2005-05-11 Strix Limited Liquid heating vessels
EP1321708A3 (en) * 2001-12-20 2004-04-21 Eichenauer Heizelemente GmbH &amp; Co.KG Device for heating a liquid
DE102005050203A1 (en) * 2005-10-18 2007-04-19 Eichenauer Heizelemente Gmbh & Co. Kg Flow heater manufacturing method for use in e.g. coffee machine, involves soldering support bar with solder, where melting point of support bar is higher than melting point of solder for soldering heater with solder
DE102005050203B4 (en) * 2005-10-18 2018-05-24 Eichenauer Heizelemente Gmbh & Co. Kg Method of making a flow heater and flow heater
DE102011012769B4 (en) 2010-05-12 2022-01-20 Türk & Hillinger GmbH High performance instantaneous water heater

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