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EP0158699B1 - Electric heating register for a blow heater - Google Patents

Electric heating register for a blow heater Download PDF

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Publication number
EP0158699B1
EP0158699B1 EP84107534A EP84107534A EP0158699B1 EP 0158699 B1 EP0158699 B1 EP 0158699B1 EP 84107534 A EP84107534 A EP 84107534A EP 84107534 A EP84107534 A EP 84107534A EP 0158699 B1 EP0158699 B1 EP 0158699B1
Authority
EP
European Patent Office
Prior art keywords
web
insulating element
bar
insulating body
coil winding
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
Application number
EP84107534A
Other languages
German (de)
French (fr)
Other versions
EP0158699A1 (en
Inventor
Günter Petz
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.)
PETZ ELEKTRO GmbH
Original Assignee
PETZ ELEKTRO GmbH
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 PETZ ELEKTRO GmbH filed Critical PETZ ELEKTRO GmbH
Priority to AT84107534T priority Critical patent/ATE39318T1/en
Publication of EP0158699A1 publication Critical patent/EP0158699A1/en
Application granted granted Critical
Publication of EP0158699B1 publication Critical patent/EP0158699B1/en
Expired 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
    • H05B1/00—Details of electric heating devices
    • H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0202—Switches
    • H05B1/0208—Switches actuated by the expansion or evaporation of a gas or liquid
    • 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
    • H05B3/16—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor the conductor being mounted on an insulating base

Definitions

  • the invention relates to an electric heating register for a fan heater, with a resistance heater arranged on an insulator that can be connected to the fan heater housing, with freely protruding winding loops fixed to the insulator by means of a clamp body, and with a bimetal switch that is connected in series with the resistor heater as a heat protection switch Insulating body connected, the terminal supporting web is arranged and in which the one end of the winding loops at a bend-fixed bend connected to the one terminal, removed from the insulating body and the other end of the winding loops arranged on an on the other side of the web closer to the insulating body the other connection connected web-fixed bend are fixed.
  • the bimetal switch is formed on the side of the web which faces the end of the winding loops which is connected to the bend which is approximated to the insulating body.
  • the winding loop which is freely spaced over its essential radial expansion, executes bending movements under the influence of thermal or mechanical influences, which result in uncontrolled approaches or distances between the winding loop and the bimetallic body, which give rise to an indefinite response of the bimetal switch and inaccurate protective circuits.
  • this object is achieved in that the bimetallic switch is arranged on the side of the web which is adjacent to the end of the winding loops connected to the radially outer bend.
  • the bimetallic strip is assigned to the winding loop held with the two radial ends at a constant distance from the web, whereby a reliable response of the bimetallic strip can be achieved at a defined temperature even if the winding loop projecting on the other side of the web is more or less attached to the Approaching footbridge.
  • the web has a recess and that the bimetal switch is arranged on the web and extends over the recess.
  • the recess can serve in a known manner to accommodate a heating resistor assigned in parallel to the bimetal switch.
  • 1 denotes an annular insulating body which can be fixed by means of a hub 2 to a fan heater housing (not shown in more detail).
  • a resistance heater 3, which has winding loops 4, is arranged on the insulating body 1.
  • the winding loops 4 are held on the insulating body 1 by hollow rivets 5 and are freely projecting with the other part. 6 with a web connected to the insulating body 1 is designated, which carries connections 7 and 8 for the resistance heating.
  • connection 7 With the connection 7, a bend 9 is firmly connected, to which the one end 4 'of the resistance heater 3 is fixed, as a result of which this end 4' is held on the web 6 both in the region of the insulating body 1 and via the bend 9.
  • the end 4 ′′ of the resistance heater 3 is fixed to a further bend 9 ′ which is connected via an electrical conductor 10 to a bimetal switch 11 serving as a heat protection switch.
  • the bimetal switch 11 extends over a recess 15 on the side of the end 4 ′ facing the end Web 6.
  • the bimetal switch 11 is connected to the connection 8 via a conductor 12.
  • a low-power electric heating element 13 is connected in a manner known per se parallel to the bimetal switch 11.
  • the web 6 is for connection to the insulating body 1 in a bushing fixed to the insulating body 16 inserted and fixed by means of the retaining pin 14 engaging under the socket 16.
  • FIG. 1 shows that as a result of the definition of the end 4 'of the resistance heater 3, a constant distance between the resistance heater 3 and the bimetal switch is ensured and maintained, and that a precisely defined operation of the bimetal switch 11 is ensured by this constant distance.
  • FIG. 2 shows a resistance heater 3 of the heating register known from DE-A1-2 944132.
  • the bimetallic switch 11 is arranged on the other side of the web 6 and is accordingly assigned to the freely protruding end 4 "of the heating register.
  • the end 4" cannot be influenced if the winding loops 4 are thermally or mechanically influenced optionally a more or less approximate position, e.g. B. at a distance "a” or a more distant position, for. B. at a distance "b” to the bimetallic switch and that the resulting different distances between the end 4 "and the bimetallic switch 11 inadvertently trigger an earlier or later response of the bimetallic switch 11.
  • This enables protective circuits to be achieved at undefined temperatures and prevents the fan heater from being safely protected .

Landscapes

  • Thermally Actuated Switches (AREA)
  • Resistance Heating (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)
  • General Induction Heating (AREA)
  • Conductive Materials (AREA)
  • Non-Reversible Transmitting Devices (AREA)

Abstract

An electrical radiator, particularly for fan-forced heaters, is provided which includes a resistance heating element disposed on an insulating element connected to the housing of the fan-forced heater. The coil winding of the resistance heating element is secured to the insulating element by means of clamping elements and is freely extending therefrom. A bimetallic switch in series with the resistance heating element serves as a heat protective switch and is disposed on a connector bar connected to the insulating element and carrying the electrical connectors for the coil winding. One end of the coil winding is secured on one side of the bar to a first bracket remote from the insulating element and which is rigid with the bar and connected to a first connector. The other end of the coil winding is secured to a second bracket disposed on the other side of the bar near the insulating element and which is rigid with the bar. The bimetallic switch is disposed on a side of the connector bar which faces that end of the coil winding which is, on one hand, connected to the insulating element and, on the other hand, is secured to the first bracket remote from the insulating element, so as to obtain exactly defined protective circuits.

Description

Die Erfindung betrifft ein elektrisches Heizregister für einen Heizlüfter, mit einer an einem mit dem Heizlüftergehäuse verbindbaren Isolierkörper angeordneten Widerstandsheizung, mit am Isolierkörper mittels Klemmkörper fixierten, frei abstehenden Wicklungsschlaufen und mit einem mit der Widerstandsheizung als Wärmeschutzschalter in Reihe liegenden Bimetallschalter, der an einem mit dem Isolierkörper verbundenen, die Anschlüsse tragenden Steg angeordnet ist und bei dem das eine Ende der Wicklungsschlaufen an einer mit dem einen Anschluß verbundenen, vom Isolierkörper entfernten stegfesten Anbiegung und das andere Ende der Wicklungsschlaufen an einer auf der anderen Seite des Stegs dem Isolierkörper zugenähert angeordneten, mit dem anderen Anschluß verbundenen stegfesten Anbiegung festgelegt sind.The invention relates to an electric heating register for a fan heater, with a resistance heater arranged on an insulator that can be connected to the fan heater housing, with freely protruding winding loops fixed to the insulator by means of a clamp body, and with a bimetal switch that is connected in series with the resistor heater as a heat protection switch Insulating body connected, the terminal supporting web is arranged and in which the one end of the winding loops at a bend-fixed bend connected to the one terminal, removed from the insulating body and the other end of the winding loops arranged on an on the other side of the web closer to the insulating body the other connection connected web-fixed bend are fixed.

Bei einem bekannten Heizregister dieser Art (DE-A1-2 944132) ist der Bimetallschalter auf der Seite vom Steg ausgebildet, die der mit dem dem Isolierkörper zugenäherten Anbiegung verbundenen Ende der Wicklungsschlaufen zugewandt ist. Die dabei über ihre wesentliche radiale Ausdehnung frei abstehend gehaltene Wicklungsschlaufe führt unter dem Einfluß thermischer oder mechanischer Einwirkungen Biegebewegungen aus, die unkontrollierte Annäherungen oder Entfernungen der Wicklungsschlaufe zum Bimetallkörper ergeben, die zu einem unbestimmten Ansprechen des Bimetallschalters und ungenauen SchutZschaltungen Anlaß sind.In a known heating register of this type (DE-A1-2 944132), the bimetal switch is formed on the side of the web which faces the end of the winding loops which is connected to the bend which is approximated to the insulating body. The winding loop, which is freely spaced over its essential radial expansion, executes bending movements under the influence of thermal or mechanical influences, which result in uncontrolled approaches or distances between the winding loop and the bimetallic body, which give rise to an indefinite response of the bimetal switch and inaccurate protective circuits.

Es ist Aufgabe der Erfindung, Maßnahmen zu einem sicheren Ansprechen des Bimetallstreifens bei vorbestimmter Temperatur zu schaffen.It is an object of the invention to provide measures for a reliable response of the bimetal strip at a predetermined temperature.

Der Erfindung gemäß ist diese Aufgabe dadurch gelöst, daß der Bimetallschalter auf der Seite vom Steg angeordnet ist, die dem einen mit der radial außenliegenden Anbiegung verbundenen Ende der Wicklungsschlaufen benachbart liegt. Hierdurch ist der Bimetallstreifen der mit den beiden radialen Enden mit konstantem Abstand zum Steg gehaltenen Wicklungsschlaufe zugeordnet, wodurch ein sicheres Ansprechen des Bimetallstreifens bei einer definierten Temperatur auch dann erzielbar ist, wenn die auf der anderen Seite des Stegs abstehende Wicklungsschlaufe sich mehr oder weniger an den Steg annähert.According to the invention, this object is achieved in that the bimetallic switch is arranged on the side of the web which is adjacent to the end of the winding loops connected to the radially outer bend. As a result, the bimetallic strip is assigned to the winding loop held with the two radial ends at a constant distance from the web, whereby a reliable response of the bimetallic strip can be achieved at a defined temperature even if the winding loop projecting on the other side of the web is more or less attached to the Approaching footbridge.

In Ausgestaltung des Heizregisters ist vorgesehen, daß der Steg eine Ausnehmung aufweist und daß der Bimetallschalter über die Ausnehmung sich erstreckend am Steg angeordnet ist. Die Ausnehmung kann dazu dienen, in bekannter Weise einen dem Bimetallschalter parallel zugeordneten Heizwiderstand aufzunehmen.In an embodiment of the heating register, it is provided that the web has a recess and that the bimetal switch is arranged on the web and extends over the recess. The recess can serve in a known manner to accommodate a heating resistor assigned in parallel to the bimetal switch.

Die Erfindung ist in der Zeichnung anhand eines Ausführungsbeispiels verdeutlicht. Es bedeuten:

  • Figur 1 ein Teilstück eines Heizregisters und
  • Figur 2 ein Teilstück eines Heizregisters bekannter Ausbildung gemäß DE-A1-2 944132.
The invention is illustrated in the drawing using an exemplary embodiment. It means:
  • Figure 1 shows a section of a heating register and
  • Figure 2 shows a section of a heating register of known design according to DE-A1-2 944132.

In den Figuren ist mit 1 ein ringförmiger Isolierkörper bezeichnet, der mittels einer Nabe 2 an einem nicht näher dargestellten Heizlüftergehäuse festlegbar ist. Am Isolierkörper 1 ist eine Widerstandsheizung 3 angeordnet, die Wicklungsschlaufen 4 aufweist. Die Wicklungsschlaufen 4 sind am Isolierkörper 1 durch Hohlnieten 5 gehalten und mit dem anderen Teil frei abstehend ausgebildet. Mit 6 ist ein mit dem Isolierkörper 1 verbundener Steg bezeichnet, der Anschlüsse 7 und 8 für die Widerstandsheizung trägt. Mit dem Anschluß 7 ist eine Anbiegung 9 fest verbunden, an die das eine Ende 4' der Widerstandsheizung 3 festgelegt ist, wodurch dieses Ende 4' sowohl im Bereich des Isolierkörpers 1 als auch über die Anbiegung 9 am Steg 6 festgehalten ist. Das Ende 4" der Widerstandsheizung 3 ist an einer weiteren Anbiegung 9' festgelegt, die über einen elektrischen Leiter 10 mit einem als Wärmeschutzschalter dienenden Bimetallschalter 11 verbunden ist. Der Bimetallschalter 11 erstreckt sich über eine Ausnehmung 15 auf der dem Ende 4' zugewandten Seite des Stegs 6. Über einen Leiter 12 steht der Bimetallschalter 11 mit dem Anschluß 8 in Verbindung. Parallel zum Bimetallschalter 11 ist in an sich bekannter Weise ein elektrischer Heizkörper 13 geringer Leistung geschaltet. Der Steg 6 ist zur Verbindung mit dem Isolierkörper 1 in eine isolierkörperfeste Buchse 16 eingesteckt und mittels die Buchse 16 untergreifenden Haltezapfen 14 in dieser fixiert.In the figures, 1 denotes an annular insulating body which can be fixed by means of a hub 2 to a fan heater housing (not shown in more detail). A resistance heater 3, which has winding loops 4, is arranged on the insulating body 1. The winding loops 4 are held on the insulating body 1 by hollow rivets 5 and are freely projecting with the other part. 6 with a web connected to the insulating body 1 is designated, which carries connections 7 and 8 for the resistance heating. With the connection 7, a bend 9 is firmly connected, to which the one end 4 'of the resistance heater 3 is fixed, as a result of which this end 4' is held on the web 6 both in the region of the insulating body 1 and via the bend 9. The end 4 ″ of the resistance heater 3 is fixed to a further bend 9 ′ which is connected via an electrical conductor 10 to a bimetal switch 11 serving as a heat protection switch. The bimetal switch 11 extends over a recess 15 on the side of the end 4 ′ facing the end Web 6. The bimetal switch 11 is connected to the connection 8 via a conductor 12. A low-power electric heating element 13 is connected in a manner known per se parallel to the bimetal switch 11. The web 6 is for connection to the insulating body 1 in a bushing fixed to the insulating body 16 inserted and fixed by means of the retaining pin 14 engaging under the socket 16.

Die Figur 1 zeigt, daß infolge der Festlegung des Endes 4' der Widerstandsheizung 3 ein konstanter Abstand der Widerstandsheizung 3 zum Bimetallschalter gewährleistet und beibehalten wird und daß durch diesen konstanten Abstand ein exakt definiertes Arbeiten des Bimetallschalters 11 sichergestellt ist.FIG. 1 shows that as a result of the definition of the end 4 'of the resistance heater 3, a constant distance between the resistance heater 3 and the bimetal switch is ensured and maintained, and that a precisely defined operation of the bimetal switch 11 is ensured by this constant distance.

Die Figur 2 zeigt eine Widerstandsheizung 3 des aus DE-A1-2 944132 bekannten Heizregisters. Bei an sich gleichem Aufbau ist bei diesem Heizregister der Bimetallschalter 11 auf der anderen Seite des Stegs 6 angeordnet und demgemäß dem frei abstehenden Ende 4" des Heizregisters zugeordnet. Dies führt dazu, daß bei thermischen oder mechanischen Beeinflussungen der Wicklungsschlaufen 4 das Ende 4" unbeeinflußbar gegebenenfalls eine mehr oder weniger angenäherte Stellung, z. B. mit Abstand "a" oder eine entferntere Stellung, z. B. mit Abstand "b" zum Bimetallschalter einnimmt und daß durch die so geschaffenen unterschiedlichen Abstände des Endes 4" zum Bimetallschalter 11 unbeabsichtigt ein früheres oder späteres Ansprechen des Bimetallschalters 11 erfolgt. Hierdurch sind Schutzschaltungen bei undefinierten Temperaturen erzielbar und ein sicherer Schutz des Heizlüfters ausgeschlossen.FIG. 2 shows a resistance heater 3 of the heating register known from DE-A1-2 944132. With the same structure in this heating register, the bimetallic switch 11 is arranged on the other side of the web 6 and is accordingly assigned to the freely protruding end 4 "of the heating register. As a result, the end 4" cannot be influenced if the winding loops 4 are thermally or mechanically influenced optionally a more or less approximate position, e.g. B. at a distance "a" or a more distant position, for. B. at a distance "b" to the bimetallic switch and that the resulting different distances between the end 4 "and the bimetallic switch 11 inadvertently trigger an earlier or later response of the bimetallic switch 11. This enables protective circuits to be achieved at undefined temperatures and prevents the fan heater from being safely protected .

Claims (2)

1. Electrical heating register for a heating fan with a resistance heating (3) allocated at an insulating body which can be connected to the case of the heating fan, with freely sticking out | winding elements (4) attached to the insulating body (1) by means of clamping screws (5) and with a bimetallic switch (11) lying in sequence with the resistance heating (3) and serving as : heat protective switch, which is allocated at a web (6) connected to the insulating body (1) and carrying the contacts (7, 8) and at which the one end (4') of the winding elements (4) is attached to a bending (9) fixed to the web, which is connected with the one contact (7) at distance of the insulating body, and at which the other end (4") of the winding elements (4) is attached to a bending (9') fixed to the web on the other side of the web (6), which is allocated near the insulating body (1) and connected with the other contact (8), characterized in the way that the bimetallic switch (11) is allocated at that side of the web (6) which lies in juxtaposition to that end (4') of the winding elements (4) connected with the radially external bending (9).
2. Electrical heating register according to claim 1, characterized in the way that the web (6) shows a recess (15) and that the bimetallic switch (11) is allocated at the web (6) in the way that it extends over the recess (15).
EP84107534A 1984-03-15 1984-06-29 Electric heating register for a blow heater Expired EP0158699B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84107534T ATE39318T1 (en) 1984-03-15 1984-06-29 ELECTRIC HEATING COIL FOR FAN HEATER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3409495 1984-03-15
DE3409495A DE3409495A1 (en) 1984-03-15 1984-03-15 ELECTRIC HEATING REGISTER, ESPECIALLY FOR HEATING FAN

Publications (2)

Publication Number Publication Date
EP0158699A1 EP0158699A1 (en) 1985-10-23
EP0158699B1 true EP0158699B1 (en) 1988-12-14

Family

ID=6230575

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84107534A Expired EP0158699B1 (en) 1984-03-15 1984-06-29 Electric heating register for a blow heater

Country Status (7)

Country Link
US (1) US4636615A (en)
EP (1) EP0158699B1 (en)
AT (1) ATE39318T1 (en)
AU (1) AU3687384A (en)
DE (1) DE3409495A1 (en)
ES (1) ES536845A0 (en)
NZ (1) NZ209772A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT211702Z2 (en) * 1987-01-27 1989-04-07 Rica Spa ELECTRIC RESISTANCE HEATING ELEMENT FOR AIR ENVIRONMENT HEATERS.
US5399838A (en) * 1993-04-19 1995-03-21 Brown; Neville L. Automotive heating apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2944132A1 (en) * 1979-11-02 1981-05-14 Fa. Fritz Eichenauer, 6744 Kandel ELECTRIC RESISTANCE HEATING ELEMENT

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE510562C (en) * 1923-12-06 1930-10-20 Scherbius & Ritter Overheating protection for electrically heated devices
US1717550A (en) * 1928-03-12 1929-06-18 James H Carmean Heater mounting
CA1031809A (en) * 1974-12-03 1978-05-23 Federal Pioneer Limited Controlled droop thermostat
DE7824686U1 (en) * 1978-08-18 1979-02-08 Wilhelm Bosbach Gmbh & Co Kg, 5630 Remscheid ELECTRICAL RESISTANCE FOR HEATING FAN, ESPECIALLY IN MOTOR VEHICLES
DE3004874A1 (en) * 1980-02-09 1981-08-20 Fritz Eichenauer GmbH & Co KG, 6744 Kandel Component board for miniature electrical appliance - has support plate with slotted gaps with sections bridged by flat shorting strips

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2944132A1 (en) * 1979-11-02 1981-05-14 Fa. Fritz Eichenauer, 6744 Kandel ELECTRIC RESISTANCE HEATING ELEMENT

Also Published As

Publication number Publication date
US4636615A (en) 1987-01-13
ES8601624A1 (en) 1985-10-16
ES536845A0 (en) 1985-10-16
ATE39318T1 (en) 1988-12-15
AU3687384A (en) 1985-09-19
NZ209772A (en) 1988-08-30
EP0158699A1 (en) 1985-10-23
DE3409495A1 (en) 1985-09-26

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