EP0530525A1 - Device for heating streaming media - Google Patents

Device for heating streaming media Download PDF

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Publication number
EP0530525A1
EP0530525A1 EP92113373A EP92113373A EP0530525A1 EP 0530525 A1 EP0530525 A1 EP 0530525A1 EP 92113373 A EP92113373 A EP 92113373A EP 92113373 A EP92113373 A EP 92113373A EP 0530525 A1 EP0530525 A1 EP 0530525A1
Authority
EP
European Patent Office
Prior art keywords
pocket
carrier body
heat exchanger
ptc
heating
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
EP92113373A
Other languages
German (de)
French (fr)
Other versions
EP0530525B1 (en
Inventor
Robert Dipl.-Ing. Karner
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.)
TDK Electronics AG
Original Assignee
Siemens Matsushita Components 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 Siemens Matsushita Components GmbH and Co KG filed Critical Siemens Matsushita Components GmbH and Co KG
Publication of EP0530525A1 publication Critical patent/EP0530525A1/en
Application granted granted Critical
Publication of EP0530525B1 publication Critical patent/EP0530525B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H05B3/10—Heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/12—Heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
    • H05B3/14—Heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
    • H05B3/141—Conductive ceramics, e.g. metal oxides, metal carbides, barium titanate, ferrites, zirconia, vitrous compounds

Definitions

  • the present invention relates to a heating device for heating flowing media with a heat exchanger heated by PTC thermistors according to the preamble of the claim.
  • a heating device of the type mentioned above is known from DE-OS 40 13 212.
  • PTC thermistors for heating a heat exchanger can be inserted directly or also by means of a carrier body into a pocket in a metal body serving as a heat exchanger, a spring inserted between the PTC thermistors each having a surface with a metallic contact assignment against an assigned surface of the metal body presses.
  • the spring acts on the other metallic contact assignment, so that the PTC thermistor is electrically connected via the metal body forming the heat exchanger on the one hand and the spring on the other.
  • the pocket for receiving the PTC thermistor in the metal body serving as the heat exchanger has a rectangular cross-section.
  • the metallic contact assignments of the PTC thermistor rub against the assigned surfaces of the pocket, so that there is a risk of abrasion of the metallic contact assignments and thus an insufficient electrical contact between the PTC thermistor and the metal body.
  • the present invention is based on the object of developing a heating device of the known type in such a way that when the PTC thermistors are inserted into the pocket of the heat exchanger, abrasion of the metallic contact assignments of the PTC thermistors is avoided.
  • a pocket for receiving a carrier body for PTC thermistors is provided in a metal body 1 provided as a heat exchanger for a heating device for heating flowing media.
  • This pocket 2 has opposite surfaces 3 which are beveled in a direction perpendicular to the plane of the drawing such that the cross section of the pocket 2 decreases inwards from the insertion side lying in the plane of the drawing - perpendicular to the plane of the drawing.
  • a carrier body 4 for PTC thermistor according to FIGS. 2 and 3, which can be made of plastic, has surfaces 5 associated with the surfaces 3 of the metal body 1 with a corresponding bevel, the carrier body 4 with its smaller cross-section end being seen perpendicular to the plane of the drawing in FIG the metal body 1 can be used.
  • the cuboid carrier body 4 is provided with recesses 6 on opposite sides from the surfaces 5 for receiving disc-shaped PTC thermistors (not shown). In the area of these recesses 6, an opening 7 is provided, so that a contact spring (not shown) can be pushed between the PTC thermistors located in the recesses 6 via a channel 8, which can be inserted after insertion of the carrier body 4 presses into the pocket 2 of the metal body 1 against the pocket surfaces 3 and to contact.
  • a contact spring (not shown) can be pushed between the PTC thermistors located in the recesses 6 via a channel 8, which can be inserted after insertion of the carrier body 4 presses into the pocket 2 of the metal body 1 against the pocket surfaces 3 and to contact.

Abstract

In the case of a heating device for heating flowing media, a metal body which is used as a heat exchanger has a pocket 2 which has an inwardly tapering cross-section and into which a supporting body, which is matched in terms of its cross-section, for PTC thermistors can be pressed in order to heat the heat exchanger. …<IMAGE>…

Description

Die vorliegende Erfindung betrifft eine Heizvorrichtung zum Erwärmen strömender Medien mit einem durch Kaltleiter beheizten Wärmetauscher nach dem Oberbegriff des Patentanspruchs.The present invention relates to a heating device for heating flowing media with a heat exchanger heated by PTC thermistors according to the preamble of the claim.

Eine Heizvorrichtung der vorstehend genannten Art ist aus der DE-OS 40 13 212 bekannt. Bei einer solchen Heizvorrichtung können Kaltleiter zur Erwärmung eines Wärmetauschers direkt oder auch mittels eines Trägerkörpers in eine Tasche in einem als Wärmetauscher dienenden Metallkörper eingesetzt werden, wobei eine zwischen die Kaltleiter eingeführte Feder diese mit jeweils einer eine metallische Kontaktbelegung aufweisenden Fläche gegen eine zugeordnete Fläche des Metallkörpers drückt. Die Feder greift dabei jeweils an der anderen metallischen Kontaktbelegung an, so daß der elektrische Anschluß der Kaltleiter über den den Wärmetauscher bildenden Metallkörper einerseits und die Feder andererseits erfolgt.A heating device of the type mentioned above is known from DE-OS 40 13 212. In such a heating device, PTC thermistors for heating a heat exchanger can be inserted directly or also by means of a carrier body into a pocket in a metal body serving as a heat exchanger, a spring inserted between the PTC thermistors each having a surface with a metallic contact assignment against an assigned surface of the metal body presses. The spring acts on the other metallic contact assignment, so that the PTC thermistor is electrically connected via the metal body forming the heat exchanger on the one hand and the spring on the other.

Bei der aus der DE-OS 40 13 212 besitzt die Tasche zur Aufnahme der Kaltleiter in dem als Wärmetauscher dienenden Metallkörper rechteckigen Querschnitt. Beim Einsetzen der Kaltleiter in die Tasche reiben daher die metallischen Kontaktbelegungen der Kaltleiter an den zugeordneten Flächen der Tasche, so daß die Gefahr eines Abriebs der metallischen Kontaktbelegungen und damit eines unzureichenden elektrischen Kontaktes zwischen Kaltleitern und Metallkörper besteht.In DE-OS 40 13 212, the pocket for receiving the PTC thermistor in the metal body serving as the heat exchanger has a rectangular cross-section. When the PTC thermistor is inserted into the pocket, the metallic contact assignments of the PTC thermistor rub against the assigned surfaces of the pocket, so that there is a risk of abrasion of the metallic contact assignments and thus an insufficient electrical contact between the PTC thermistor and the metal body.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Heizvorrichtung der bekannten Art derart weiterzubilden, daß beim Einsetzen von Kaltleitern in die Tasche des Wärmetauschers ein Abrieb der metallischen Kontaktbelegungen der Kaltleiter vermieden wird.The present invention is based on the object of developing a heating device of the known type in such a way that when the PTC thermistors are inserted into the pocket of the heat exchanger, abrasion of the metallic contact assignments of the PTC thermistors is avoided.

Diese Aufgabe wird bei einer Heizvorrichtung der eingangs genannten Art erfindungsgemäß durch die Merkmale des kennzeichnenden Teils des Patentanspruchs 1 gelöst.This object is achieved according to the invention in a heating device of the type mentioned at the outset by the features of the characterizing part of patent claim 1.

Die Erfindung wird im folgenden anhand eines in den Figuren der Zeichnung dargestellten Ausführungsbeispiels näher erläutert. Es zeigt:

Figur 1
eine Ansicht eines als Wärmetauscher dienenden Metallkörpers von der Seite her, zu der sich die Tasche zur Aufnahme von Kaltleitern öffnet; und
Figuren 2 und 3
eine Seitenansicht bzw. eine perspektivische Ansicht eines Trägerkörpers für Kaltleiter, der in die Tasche des Metallkörpers nach Figur 1 einsetzbar ist.
The invention is explained below with reference to an embodiment shown in the figures of the drawing. It shows:
Figure 1
a view of a metal body serving as a heat exchanger from the side to which the pocket for receiving PTC thermistors opens; and
Figures 2 and 3
a side view and a perspective view of a support body for PTC thermistor, which can be inserted into the pocket of the metal body according to Figure 1.

Gemäß Figur 1 ist in einem als Wärmetauscher für eine Heizvorrichtung zum Erwärmen von strömenden Medien vorgesehenen Metallkörper 1 eine Tasche zur Aufnahme eines Trägerkörpers für Kaltleiter vorgesehen. Diese Tasche 2 besitzt sich gegenüberliegende Flächen 3, welche in einer zur Zeichenebene senkrechten Richtung derart abgeschrägt sind, daß der Querschnitt der Tasche 2 von der in der Zeichenebene liegenden Einsteckseite nach innen - senkrecht zur Zeichenebene - abnimmt.According to FIG. 1, a pocket for receiving a carrier body for PTC thermistors is provided in a metal body 1 provided as a heat exchanger for a heating device for heating flowing media. This pocket 2 has opposite surfaces 3 which are beveled in a direction perpendicular to the plane of the drawing such that the cross section of the pocket 2 decreases inwards from the insertion side lying in the plane of the drawing - perpendicular to the plane of the drawing.

Ein Trägerkörper 4 für Kaltleiter gemäß den Figuren 2 und 3, der aus Kunststoff hergestellt sein kann, besitzt den Flächen 3 des Metallkörpers 1 zugeordnete Flächen 5 mit entsprechender Abschrägung, wobei der Trägerkörper 4 mit seinem Ende geringeren Querschnitts in Figur 1 gesehen senkrecht zur Zeichenebene in den Metallkörper 1 einsetzbar ist.A carrier body 4 for PTC thermistor according to FIGS. 2 and 3, which can be made of plastic, has surfaces 5 associated with the surfaces 3 of the metal body 1 with a corresponding bevel, the carrier body 4 with its smaller cross-section end being seen perpendicular to the plane of the drawing in FIG the metal body 1 can be used.

Der quaderförmige Trägerkörper 4 ist mit auf gegenüberliegenden Seiten von den Flächen 5 her mit Ausnehmungen 6 zur Aufnahme von (nicht dargestellten) scheibenförmigen Kaltleitern versehen. Im Bereich dieser Ausnehmungen 6 ist eine Durchbrechung 7 vorgesehen, so daß über einen Kanal 8 eine (nicht dargestellte) Kontaktfeder zwischen die in den Ausnehmungen 6 befindlichen Kaltleiter geschoben werden kann, welche diese nach dem Einführen des Trägerkörpers 4 in die Tasche 2 des Metallkörpers 1 gegen die Taschenflächen 3 preßt und zu kontaktieren. Es ist aber auch möglich, eine Feder und einen Kontaktstift in den Trägerkörper 4 einzuspritzen, um die Haltleiter in die Tasche 2 zu pressen und zu kontaktieren. Diese Möglichkeit ist nicht eigens dargestellt. Ersichtlich können aufgrund der vorstehend erläuterten Ausgestaltung von Metallkörper 1 und Trägerkörper 4 metallische Kontaktbelegungen der in den Ausnehmungen 6 befindlichen Kaltleiter beim Einführen in die Tasche 2 des Metallkörpers 1 nicht an den Flächen 3 reiben, weil sie praktisch erst nach dem vollständigen Einführen des Trägerkörpers 4 in die Tasche 2 mit den Flächen 3 in Kontakt gelangen. Es wird nicht nur ein Abrieb von metallischen Kontaktbelegungen der Kaltleiter an den Flächen 3 der Tasche 2 daher vermieden sondern die Kaltleiter werden auch mit relativ großem Druck gegen diese Flächen gepreßt.The cuboid carrier body 4 is provided with recesses 6 on opposite sides from the surfaces 5 for receiving disc-shaped PTC thermistors (not shown). In the area of these recesses 6, an opening 7 is provided, so that a contact spring (not shown) can be pushed between the PTC thermistors located in the recesses 6 via a channel 8, which can be inserted after insertion of the carrier body 4 presses into the pocket 2 of the metal body 1 against the pocket surfaces 3 and to contact. However, it is also possible to inject a spring and a contact pin into the carrier body 4 in order to press the contact conductors into the pocket 2 and to contact them. This option is not shown specifically. Obviously, due to the configuration of the metal body 1 and carrier body 4 explained above, metallic contact assignments of the PTC thermistors located in the recesses 6 cannot rub against the surfaces 3 when inserted into the pocket 2 of the metal body 1, because they practically only after the carrier body 4 has been completely inserted into the pocket 2 come into contact with the surfaces 3. Not only is abrasion of metallic contact assignments of the PTC thermistors on the surfaces 3 of the pocket 2 avoided, but the PTC thermistors are also pressed against these surfaces with relatively great pressure.

Claims (1)

Heizvorrichtung zum Erwärmen strömender Medien mit einem durch Kaltleiter beheizten Wärmetauscher (1) aus warmeleitendem Metall, mit einer im Wärmetauscher (1) vorgesehenen schlitzförmigen Tasche (2) und mit einem in seiner Form an die Tasche (2) angepaßten quaderförmigen Trägerkörper (4) für Kaltleiter, der an sich gegenüberliegenden Flächen (5) Ausnehmungen (6) zur Aufnahme der Kaltleiter sowie einen Innenkanal (8) zur Aufnahme einer Kontaktfeder aufweist, so daß beim Einführen des Trägerkörpers (4) mit den in seinen Ausnehmungen (6) befindlichen Kaltleitern in die Tasche (2) die Kaltleiter an ihnen gegenüberliegenden Taschenflächen (3) angepreßt werden,
dadurch gekennzeichnet, daß mindestens die die Ausnehmungen (6) aufweisenden Flächen (5) des Trägerkörpers (4) sowie die diesen gegenüberliegenden Flächen (3) der Tasche (2) derart abgeschrägt sind, daß der Querschnitt des Trägerkörpers (4) und der Tasche (2) von der Einführungsseite her nach innen abnimmt.Heating device for heating flowing media with a heat exchanger (1) made of heat-conducting metal heated by a PTC thermistor, with a slot-shaped pocket (2) provided in the heat exchanger (1) and with a cuboid carrier body (4) adapted to the pocket (2) in shape PTC thermistor which has recesses (6) on opposite surfaces (5) for receiving the PTC thermistor and an inner channel (8) for receiving a contact spring, so that when the carrier body (4) is inserted with the PTC thermistors in its recesses (6) the pocket (2), the PTC thermistors are pressed against the pocket surfaces (3) opposite them,
characterized in that at least the surfaces (5) of the carrier body (4) which have the recesses (6) and the surfaces (3) of the pocket (2) opposite them are chamfered in such a way that the cross section of the carrier body (4) and the pocket ( 2) decreases inwards from the inlet side.
EP92113373A 1991-08-12 1992-08-05 Device for heating streaming media Expired - Lifetime EP0530525B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4126633 1991-08-12
DE4126633 1991-08-12

Publications (2)

Publication Number Publication Date
EP0530525A1 true EP0530525A1 (en) 1993-03-10
EP0530525B1 EP0530525B1 (en) 1994-07-20

Family

ID=6438149

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92113373A Expired - Lifetime EP0530525B1 (en) 1991-08-12 1992-08-05 Device for heating streaming media

Country Status (6)

Country Link
US (1) US5262619A (en)
EP (1) EP0530525B1 (en)
JP (1) JPH05223343A (en)
CA (1) CA2075689A1 (en)
DE (1) DE59200295D1 (en)
ES (1) ES2057952T3 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012080417A1 (en) * 2010-12-17 2012-06-21 Epcos Ag Thermoelectric module and use of a thermoelectric module
EP2685784A1 (en) * 2012-07-11 2014-01-15 Behr GmbH & Co. KG Dispositif de chauffage

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US5668521A (en) * 1995-03-22 1997-09-16 Littelfuse, Inc. Three piece female blade fuse assembly having fuse link terminal with a clip receiving portion
US6215388B1 (en) 1996-09-27 2001-04-10 Therm-Q-Disc, Incorporated Parallel connected PTC elements
DE19846282B4 (en) * 1998-10-08 2006-12-07 Mann + Hummel Gmbh Electric heater
DE10111336B4 (en) * 2001-03-08 2008-02-14 Heraeus Electro-Nite International N.V. Sensor, in particular temperature sensor, with a measuring resistor
ATE330165T1 (en) † 2004-01-23 2006-07-15 Dbk David & Baader Gmbh HEATING CLIP FOR A FLUID LINE
US8232509B2 (en) * 2006-11-16 2012-07-31 S.C. Johnson & Son, Inc. Retainer system
US7288748B1 (en) 2006-12-21 2007-10-30 S.C. Johnson & Son, Inc. PTC electrical heating devices
US9020914B2 (en) * 2008-06-13 2015-04-28 Sony Corporation Automatic song selection
JP5461138B2 (en) * 2009-09-30 2014-04-02 株式会社ケーヒン PTC heater unit
DE102010037479B4 (en) * 2010-09-10 2023-03-16 Dbk David + Baader Gmbh Electric heater
SG194563A1 (en) 2011-04-21 2013-12-30 Eveready Battery Inc Hydrogen generator with improved volume efficiency
US9243560B2 (en) 2012-11-19 2016-01-26 Intelligent Energy Inc. Hydrogen generator having a thermal actuator
US10093538B2 (en) 2012-11-19 2018-10-09 Intelligent Energy Inc. Heater assembly, hydrogen generator and method of providing hydrogen gas
US9725316B2 (en) 2013-03-07 2017-08-08 Intelligent Energy Inc. Hydrogen generator with replaceable fuel unit and a method of producing hydrogen gas
DE102019212443A1 (en) * 2019-08-20 2021-02-25 Eberspächer Catem Gmbh & Co. Kg Electrical load resistance

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DE4013212A1 (en) * 1989-05-30 1990-12-06 Siemens Ag Heating element for flowing medium - has metal body acting as heat exchanger arranged with slot-shaped pocket open or closed to outlet side

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US4223208A (en) * 1978-04-13 1980-09-16 Siemens Aktiengesellschaft Heater with a ferro-electric ceramic heating element
DE4013212A1 (en) * 1989-05-30 1990-12-06 Siemens Ag Heating element for flowing medium - has metal body acting as heat exchanger arranged with slot-shaped pocket open or closed to outlet side

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012080417A1 (en) * 2010-12-17 2012-06-21 Epcos Ag Thermoelectric module and use of a thermoelectric module
EP2685784A1 (en) * 2012-07-11 2014-01-15 Behr GmbH & Co. KG Dispositif de chauffage
US9345071B2 (en) 2012-07-11 2016-05-17 Mahle International Gmbh Heating device

Also Published As

Publication number Publication date
US5262619A (en) 1993-11-16
EP0530525B1 (en) 1994-07-20
DE59200295D1 (en) 1994-08-25
JPH05223343A (en) 1993-08-31
CA2075689A1 (en) 1993-02-13
ES2057952T3 (en) 1994-10-16

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