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EP0530525B1 - Device for heating streaming media - Google Patents

Device for heating streaming media Download PDF

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Publication number
EP0530525B1
EP0530525B1 EP92113373A EP92113373A EP0530525B1 EP 0530525 B1 EP0530525 B1 EP 0530525B1 EP 92113373 A EP92113373 A EP 92113373A EP 92113373 A EP92113373 A EP 92113373A EP 0530525 B1 EP0530525 B1 EP 0530525B1
Authority
EP
European Patent Office
Prior art keywords
pocket
ptc thermistors
supporting body
recesses
heat exchanger
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 - Lifetime
Application number
EP92113373A
Other languages
German (de)
French (fr)
Other versions
EP0530525A1 (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—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/12—Heating 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—Heating 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 patent 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 therefore rub against the assigned surfaces of the pocket, so that there is a risk of abrasion of the metallic contact assignments and thus insufficient electrical contact between the PTC thermistor and the metal body.
  • the present invention has for its object to develop a heating device of the known type such that abrasion of the metallic contact assignments of the PTC thermistor is avoided when inserting PTC thermistors in the pocket of the heat exchanger.
  • 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 opposing surfaces 3 which are chamfered 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 assigned to 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, and these springs 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, and these springs 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.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Resistance Heating (AREA)
  • Direct Air Heating By Heater Or Combustion Gas (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
  • Steam Or Hot-Water Central Heating Systems (AREA)

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 patent 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 therefore rub against the assigned surfaces of the pocket, so that there is a risk of abrasion of the metallic contact assignments and thus 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 has for its object to develop a heating device of the known type such that abrasion of the metallic contact assignments of the PTC thermistor is avoided when inserting PTC thermistors in the pocket of the heat exchanger.

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 opposing surfaces 3 which are chamfered 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 assigned to 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, and these springs 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 specifically shown. Obviously, due to the above-described configuration of metal body 1 and carrier body 4, 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)

  1. Heating device for heating flowing media having a heat exchanger (1), which is heated by PTC thermistors and is composed of heat-conductive metal, having a pocket (2) which is provided in the heat exchanger (1) and is in the form of a slot, and having a box-shaped supporting body (4), whose shape is matched to the pocket (2), for PTC thermistors, which supporting body (4) has on mutually opposite surfaces (5) recesses (6) for accommodating the PTC thermistors, as well as an internal channel (8) for accommodating a contact spring, so that, during insertion of the supporting body (4), with the PTC thermistors which are located in its recesses (6), into the pocket (2), the PTC thermistors are pressed against pocket surfaces (3) which are opposite them, characterized in that at least those surfaces (5) of the supporting body (4) having the recesses (6) as well as those surfaces (3) of the pocket (2) opposite said surfaces (5) are inclined in such a manner that the cross-section of the supporting body (4) and of the pocket (2) reduces from the insertion side inwards.
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 EP0530525A1 (en) 1993-03-10
EP0530525B1 true 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)

Families Citing this family (19)

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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
DE20212580U1 (en) 2002-08-16 2002-10-10 Türk & Hillinger GmbH, 78532 Tuttlingen Electric heating cartridge with PTC elements
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
DE102011017387A1 (en) * 2010-12-17 2012-06-21 Epcos Ag Thermoelectric module and use of a thermoelectric module
EP2996185A1 (en) 2011-04-21 2016-03-16 Intelligent Energy Limited Hydrogen generator with improved volume efficiency
EP2685784B1 (en) 2012-07-11 2016-09-14 MAHLE Behr GmbH & Co. KG Dispositif de chauffage
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
DE102018122436B4 (en) 2018-09-13 2024-08-22 Eichenauer Heizelemente Gmbh & Co. Kg Heater assembly and heater housing with such a heater assembly
DE102019212443A1 (en) * 2019-08-20 2021-02-25 Eberspächer Catem Gmbh & Co. Kg Electrical load resistance

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DE2816076A1 (en) * 1978-04-13 1979-10-25 Siemens Ag HEATER WITH FERROELECTRIC CERAMIC HEATING ELEMENT
DE2840242C2 (en) * 1978-09-15 1984-08-23 Siemens AG, 1000 Berlin und 8000 München Heating device for preheating heating oil
US4395623A (en) * 1980-03-04 1983-07-26 Murata Manufacturing Co., Ltd. Self-regulating electric heater
JPS60112281A (en) * 1983-11-18 1985-06-18 松下電工株式会社 Heater
FR2568438B1 (en) * 1984-07-25 1986-10-17 Seb Sa BOILER FOR ELECTRIC HOUSEHOLD APPLIANCE
DE3661978D1 (en) * 1985-03-14 1989-03-02 Siemens Ag Heating element for heating streaming, especially gaseous media
US4899032A (en) * 1987-03-12 1990-02-06 Siemens Aktiengesellschaft Electric heating element utilizing ceramic PTC resistors for heating flooring media
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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US5086747A (en) * 1990-08-22 1992-02-11 Texas Instruments Incorporated Internal combustion engine with fuel heater

Also Published As

Publication number Publication date
US5262619A (en) 1993-11-16
ES2057952T3 (en) 1994-10-16
DE59200295D1 (en) 1994-08-25
CA2075689A1 (en) 1993-02-13
JPH05223343A (en) 1993-08-31
EP0530525A1 (en) 1993-03-10

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