EP0057460B1 - Regulating device for the temperature of electrically heated applianees - Google Patents

Regulating device for the temperature of electrically heated applianees Download PDF

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Publication number
EP0057460B1
EP0057460B1 EP82100725A EP82100725A EP0057460B1 EP 0057460 B1 EP0057460 B1 EP 0057460B1 EP 82100725 A EP82100725 A EP 82100725A EP 82100725 A EP82100725 A EP 82100725A EP 0057460 B1 EP0057460 B1 EP 0057460B1
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EP
European Patent Office
Prior art keywords
bimetallic strip
compensating
stop
working
bimetal
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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
EP82100725A
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German (de)
French (fr)
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EP0057460A3 (en
EP0057460A2 (en
Inventor
Jürgen Sixt
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EGO Elektro Geratebau GmbH
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EGO Elektro Gerate Blanc und Fischer GmbH
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Priority to AT82100725T priority Critical patent/ATE9936T1/en
Publication of EP0057460A2 publication Critical patent/EP0057460A2/en
Publication of EP0057460A3 publication Critical patent/EP0057460A3/en
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Publication of EP0057460B1 publication Critical patent/EP0057460B1/en
Expired legal-status Critical Current

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/10—Compensation for variation of ambient temperature or pressure

Definitions

  • the invention relates to a control device for the temperature of electrically heated devices with a working bimetal which determines the intermittent duty cycle of the device and a compensating bimetal which counteracts the influence of the ambient temperature on the working bimetal, in which device the compensating bimetal which due to increasing ambient temperature deformation of the working bimetal only up to a certain value of the ambient temperature is largely canceled out by continuously increasing its own deformation, while the compensation bimetal comes to a stop at ambient temperatures above this value.
  • the object of the invention is to adjust the compensation in the upper temperature range in a simple and uncomplicated manner to a value corresponding to or approximating the actual conditions.
  • This object is achieved according to the invention in that the stop between the fixed end of the compensation bimetal and the effective point of attack is arranged such that, at temperatures above the certain value, the deformation of the partial length of the compensation bimetal lying between the point of attack and the stop is reduced accordingly Compensation effect can continue to work.
  • the bimetal can be arranged parallel to a snap switch, the support of which forms the stop. No additional component is therefore required here in order to put the invention into practice.
  • the power control device 11 has a housing 12 which has the shape of a substantially square box which is open on one flat side. It is used for the infinitely adjustable control of the output, in particular of electric cooking and heating devices in individual output pulses with variable relative duty cycle.
  • the power can be adjusted by means of an adjusting shaft 23 and a curve 19 which is non-rotatable thereon.
  • the curve 19 acts on one end 70 of a compensation bimetal 26, which is pressed against the curve by a spring 34 and is connected at the other end in the region of an axis of rotation 28 to the carrier 29 of a snap switch 27.
  • the snap switch 27 has a snap spring 30 consisting of a thin spring plate, the spring tongue of which is supported on a bent projection 71 of the snap switch carrier under kink pretension. At the free end, the snap spring 30 carries a contact 31 which can cooperate with a contact 32 fixed on the power control unit. The snap spring is received at its end opposite the contact 31 on a screw-like adjustable counter bearing 33.
  • a working bimetal 36 in the form of an L-shaped bimetal lever is pivotally mounted on the housing 12 about an axis of rotation 37.
  • the snap spring is actuated via a bent projection 44 of an L-leg 43 of the working bimetal 36.
  • the working bimetal is about the axis of rotation 37 relative to the housing 12 under the effect of the bimetal bend in the long leg 38 of the latch, which is arranged transversely to the snap switch Bimetal lever 43 pivotable.
  • the free end of the leg 38 is supported on an intermediate wall 42 by an adjusting screw 40 and under the action of a coil spring 41.
  • the intermediate housing wall 42 separates one Chamber 74 in which the heated leg 38 of the working bimetal 36 is located.
  • the chamber 74 is ventilated to the outside.
  • the rest of the switch part which in particular contains the snap switch 27 and the compensation bimetal 26, remains largely unaffected by the heat of the working bimetal 36 and its heating.
  • the temperature of the power control unit can increase to quite considerable temperatures due to poor heat dissipation to the outside or due to external heating when installed in a stove, oven or the like.
  • the compensation bimetal 26 counteracts this influence, which drives the temperature of the working bimetal 36 up and thus produces a greater deflection, which simulates a lower power setting, by bending when heated so that the distance between it and the snap-action switch carrier is smaller becomes.
  • the compensation bimetal 26 in the vicinity of its bent end 70 resting against the curve has a second, opposite bend 75, which is produced by the compensation bimetal 26 being forked at its free end and one section of material is bent up and the other is bent down. It is possible to provide one bend 70 and 75, but two bends 75 could also be provided parallel to one another for reasons of symmetry, in the middle of which there is a bend 70 or vice versa.
  • the offsets are V-shaped or arc-shaped to ensure a smooth contact surface on the curve 19 or the switch carrier 29.
  • the power control unit is shown in the switched-off state. If, by turning the curve 19 via the setting shaft 23, a power setting is carried out, the snap-action switch carrier 29 is pivoted counter-clockwise via the divided compensation bimetal 26, the snap spring which until then has been held in the switched-off position by the lever end 44 acting on the actuating point, the two contacts 31, 32 closes. As a result, current is supplied to the consumer, for example a hotplate, but also the heating 39 of the working bimetal 36, which expands in such a way that after a certain time the lever end 44 brings the snap switch back to the off position. After the bimetal 36 has cooled, the heating of which has also been switched off, the snap switch switches on again. This results in a switch-on and switch-off control that can be set in the relative duty cycle.
  • the compensation bimetal 26 in the drawing is deflected downward, that is to say toward the snap switch carrier 29. This continues until the temperature range is reached in which a further deflection of the compensation bimetal would lead to overcompensation.
  • the offset 75 of the compensation bimetal 26 comes into contact with the switch carrier, which forms a stop for the offset 75. This prevents the further deflection of the compensation bimetal 26 in the region between the offset 75 and the other end 76 of the compensation bimetal.
  • An effective compensation deflection of the bimetal remains only between the contact point of the offset 75 on the support 29 and the contact point of the offset 70 on the curve 19.
  • the embodiment described here in which the compensation bimetal stops on the snap switch carrier, is advantageous in the pivotable arrangement of the compensation bimetal / snap switch unit. If the arrangement cannot be pivoted as a whole, the stop could also be fixed to the housing. By arranging the stop accordingly, it would even be possible, if necessary, to generate counter-compensation.

Abstract

1. Regulating device for the temperature of electrically heated appliances with a working bimetallic strip (36) determining the intermittent on-time of the appliance and a compensating bimetallic strip (26) counteracting the influence of the ambient temperature on the working bimetallic strip (36), whereby in said device the compensating bimetallic strip (26) substantially removes the deformation of the working bimetallic strip (36) caused by increasing ambient temperature only up to a given value of the latter as a result of constantly increasing characteristic deformation whilst, in the case of ambient temperatures above this value, the compensating bimetallic strip (26) engages with a stop, characterized in that the stop is arranged between the fixed end (76) of the compensating bimetallic strip (26) and the effective application point (70) in such a way that in the case of temperatures above the given value the deformation of the partial length of the compensating bimetallic strip (26) located between the application point (70) and the stop can continue to act with a correspondingly reduced compensating effect.

Description

Die Erfindung betrifft eine Regeleinrichtung für die Temperatur elektrisch beheizter Geräte mit einem die intermittierende Einschaltdauer des Gerätes bestimmenden Arbeits-Bimetall und einem dem Einfluß der Umgebungstemperatur auf das Arbeits-Bimetall entgegenwirkenden Kompensations-Bimetall, bei welcher Einrichtung das Kompensations-Bimetall die auf Grund steigender Umgebungstemperatur erfolgende Verformung des Arbeits-Bimetalles nur bis zu einem bestimmten Wert der Umgebungstemperatur durch stetig zunehmende eigene Verformung weitgehend aufhebt, während das Kompensations-Bimetall bei über diesem Wert liegenden Umgebungstemperaturen an einem Anschlag zur Anlage kommt.The invention relates to a control device for the temperature of electrically heated devices with a working bimetal which determines the intermittent duty cycle of the device and a compensating bimetal which counteracts the influence of the ambient temperature on the working bimetal, in which device the compensating bimetal which due to increasing ambient temperature deformation of the working bimetal only up to a certain value of the ambient temperature is largely canceled out by continuously increasing its own deformation, while the compensation bimetal comes to a stop at ambient temperatures above this value.

Aus der GB-A-763 892 ist eine derartige Regeleinrichtung bekannt geworden, bei der die Auslenkung des Kompensations-Bimetalls von einem Zusatznocken an der Einstellkurve bei relativ hohen Einstellungen der Regeleinrichtung behindert wird. Die Begrenzung erfolgt also nicht bei einem bestimmten festen Wert der Umgebungstemperatur, sondern in Abhängigkeit von der Einstellung der Regeleinrichtung.From GB-A-763 892 such a control device has become known in which the deflection of the compensation bimetal is hampered by an additional cam on the setting curve at relatively high settings of the control device. The limitation therefore does not take place at a certain fixed value of the ambient temperature, but as a function of the setting of the control device.

In der CH-A-448 305 ist ein elektro-thermisches Zeitschaltwerk beschrieben, bei dem zur Umgebungstemperatur-Kompensation der Schaltwirkung des Arbeits-Bimetalles diese beiden Bimetalle parallel zueinander schwenkbar angeordnet sind. Bei der Ausbiegung beider Bimetalle wandert der Angriffspunkt eines Verbindungsstiftes auf eine schräge Rampe am Kompensations-Bimetall zu und bewirkt eine Aufhebung oder Änderung der Kompensationswirkung. Diese Anordnung ist relativ aufwendig und für feinere Riegelvorgänge wenig geeignet, weil es erhebliche Auslenkungen beider Bimetalle sowie ein stets reibungsbehaftetes Wandern eines Stiftes auf einem Bimetall voraussetzt.In CH-A-448 305 an electro-thermal time switch is described, in which these two bimetals are pivotally arranged parallel to each other for ambient temperature compensation of the switching effect of the working bimetal. When both bimetals bend, the point of application of a connecting pin moves towards an inclined ramp on the compensation bimetal and causes the compensation effect to be canceled or changed. This arrangement is relatively complex and not very suitable for finer locking operations, because it requires considerable deflections of both bimetallic elements as well as an always frictional migration of a pin on a bimetal.

Aufgabe der Erfindung ist es, auf einfache und unkomplizierte Art die Kompensation im oberen Temperaturbereich auf einen den wirklichen Verhältnissen entsprechenden oder nahekommenden Wert anzugleichen.The object of the invention is to adjust the compensation in the upper temperature range in a simple and uncomplicated manner to a value corresponding to or approximating the actual conditions.

Diese Aufgabe wird gemäß der Erfindung dadurch gelöst, daß der Anschlag zwischen festliegendem Ende des Kompensations-Bimetalles und wirksamen Angriffspunkt derart angeordnet ist, daß bei über dem bestimmten Wert liegenden Temperaturen die Verformung der zwischen Angriffspunkt und Anschlag liegenden Teillänge des Kompensations-Bimetalles mit entsprechend herabgesetztem Kompensationseffekt weiterwirken kann.This object is achieved according to the invention in that the stop between the fixed end of the compensation bimetal and the effective point of attack is arranged such that, at temperatures above the certain value, the deformation of the partial length of the compensation bimetal lying between the point of attack and the stop is reduced accordingly Compensation effect can continue to work.

Dadurch, daß der Anschlag in Abstand von dem wirksamen Angriffspunkt des Bimetalls angreift, verbleibt also ein Rest des Bimetalls, das noch im Kompensationssinne wirksam bleibt, wenn der Anschlag bereits wirksam geworden ist.Because the stop acts at a distance from the effective point of attack of the bimetal, a remainder of the bimetal remains, which remains effective in the sense of compensation when the stop has already become effective.

Auf diese Weise kann eine gute Anpassung der Kennlinie auch dann vorgenommen werden, wenn eine vollständige Blockierung der Kompensation nicht erwünscht ist.In this way, a good adjustment of the characteristic curve can also be carried out when complete blocking of the compensation is not desired.

Dies kann vorzugsweise dadurch geschehen, daß das Bimetall an seinem vom festliegenden Ende fernen Ende in wenigstens zwei Abschnitte aufgeteilt ist, von denen der eine an dem Anschlag zur Anlage kommt und der andere den wirksamen Angriffspunkt bildet.This can preferably be done by dividing the bimetal at its end remote from the fixed end into at least two sections, one of which comes to rest against the stop and the other forms the effective point of attack.

Bei einer bevorzugten Ausführungsform kann das Bimetall parallel zu einem Schnappschalter angeordnet sein, dessen Träger den Anschlag bildet. Hier wird also kein zusätzliches Bauteil benötigt, um die Erfindung in die Praxis umzusetzen.In a preferred embodiment, the bimetal can be arranged parallel to a snap switch, the support of which forms the stop. No additional component is therefore required here in order to put the invention into practice.

Ein Ausführungsbeispiel der Erfindung wird im Zusammenhang mit der Zeichnung beschrieben.An embodiment of the invention will be described in connection with the drawing.

Diese zeigt die Draufsicht auf ein Leistungssteuergerät, in dem eine Kompensationseinrichtung nach der Erfindung verwendet wird.This shows the top view of a power control device in which a compensation device according to the invention is used.

Das Leistungssteuergerät 11 besitzt ein Gehäuse 12, das die Form eines im wesentlichen quadratischen, an einer Flachseite offenen Kastens hat. Es dient zur stufenlos einstellbaren Steuerung der Leistung insbesondere von Elektrokoch- und Wärmegeräten in einzelnen Leistungsimpulsen mit veränderbarer relativer Einschaltdauer. Über eine Einstellwelle 23 und eine darauf drehfeste Kurve 19 ist die Leistung einstellbar. Die Kurve 19 wirkt auf ein Ende 70 eines Kompensations-Bimetalls 26 ein, das durch eine Feder 34 an die Kurve angepreßt wird und mit dem anderen Ende im Bereich einer Drehachse 28 mit dem Träger 29 eines Schnappschalters 27 verbunden ist.The power control device 11 has a housing 12 which has the shape of a substantially square box which is open on one flat side. It is used for the infinitely adjustable control of the output, in particular of electric cooking and heating devices in individual output pulses with variable relative duty cycle. The power can be adjusted by means of an adjusting shaft 23 and a curve 19 which is non-rotatable thereon. The curve 19 acts on one end 70 of a compensation bimetal 26, which is pressed against the curve by a spring 34 and is connected at the other end in the region of an axis of rotation 28 to the carrier 29 of a snap switch 27.

Der Schnappschalter 27 besitzt eine aus dünnem Federblech bestehende Schnappfeder 30, deren Federzunge an einem abgebogenen Vorsprung 71 des Schnappschaltträgers unter Knickvorspannung abgestützt ist. Am freien Ende trägt die Schnappfeder 30 einen Kontakt 31, der mit einem am Leistungssteuergerät festen Kontakt 32 zusammenarbeiten kann. Die Schnappfeder ist an ihrem dem Kontakt 31 gegenüberliegenden Ende an einem schraubenartig justierbaren Gegenlager 33 aufgenommen.The snap switch 27 has a snap spring 30 consisting of a thin spring plate, the spring tongue of which is supported on a bent projection 71 of the snap switch carrier under kink pretension. At the free end, the snap spring 30 carries a contact 31 which can cooperate with a contact 32 fixed on the power control unit. The snap spring is received at its end opposite the contact 31 on a screw-like adjustable counter bearing 33.

Ein Arbeits-Bimetall 36 in Gestalt eines L-förmigen Bimetallhebels ist um eine Drehachse 37 am Gehäuse 12 schwenkbar gelagert. Die Betätigung der Schnappfeder geschieht über einen abgebogenen Vorsprung 44 eines L-Schenkels 43 des Arbeits-Bimetalls 36. Das Arbeits-Bimetall ist um die Drehachse 37 gegenüber dem Gehäuse 12 unter der Wirkung der Bimetallbiegung in dem langen, quer zum Schnappschalter angeordneten Schenkel 38 des Bimetallhebels 43 verschwenkbar. Auf dem Schenkel 38 befindet sich eine elektrische Beheizung 39, die elektrisch parallel zum Verbraucher geschaltet ist, d. h. ebenfalls von dem Kontaktpaar 31, 32 ein- und ausgeschaltet wird. Das freie Ende des Schenkels 38 stützt sich über eine Justierschraube 40 und unter der Wirkung einer Schraubenfeder 41 an einer Gehäusezwischenwand 42 ab.A working bimetal 36 in the form of an L-shaped bimetal lever is pivotally mounted on the housing 12 about an axis of rotation 37. The snap spring is actuated via a bent projection 44 of an L-leg 43 of the working bimetal 36. The working bimetal is about the axis of rotation 37 relative to the housing 12 under the effect of the bimetal bend in the long leg 38 of the latch, which is arranged transversely to the snap switch Bimetal lever 43 pivotable. On the leg 38 there is an electrical heater 39 which is electrically connected in parallel to the consumer, i. H. is also switched on and off by the contact pair 31, 32. The free end of the leg 38 is supported on an intermediate wall 42 by an adjusting screw 40 and under the action of a coil spring 41.

Die Gehäusezwischenwand 42 trennt eine Kammer 74 ab, in der der beheizte Schenkel 38 des Arbeits-Bimetalls 36 liegt. Die Kammer 74 ist nach außen belüftet.The intermediate housing wall 42 separates one Chamber 74 in which the heated leg 38 of the working bimetal 36 is located. The chamber 74 is ventilated to the outside.

Dadurch bleibt der übrige Schalterteil, der insbesondere den Schnappschalter 27 und das Kompensations-Bimetall 26 enthält, von der Wärme des Arbeits-Bimetalls 36 und seiner Beheizung weitgehend unbeeinflußt. Trotzdem kann sich die Temperatur des Leistungssteuergerätes infolge schlechter Wärmeableitung nach außen oder durch Fremdbeheizung bei Einbau in einen Herd, Backofen o. dgl. auf recht erhebliche Temperaturen erhöhen. Diesem Einfluß, der die Temperatur des Arbeits-Bimetalls 36 hochtreibt und damit eine stärkere Ausbiegung erzeugt, die eine geringere Leistungseinstellung vortäuscht, wirkt das Kompensations-Bimetall 26 entgegen, indem es sich bei Erwärmung so verbiegt, daß der Abstand zwischen ihm und dem Schnappschalterträger geringer wird.As a result, the rest of the switch part, which in particular contains the snap switch 27 and the compensation bimetal 26, remains largely unaffected by the heat of the working bimetal 36 and its heating. Nevertheless, the temperature of the power control unit can increase to quite considerable temperatures due to poor heat dissipation to the outside or due to external heating when installed in a stove, oven or the like. The compensation bimetal 26 counteracts this influence, which drives the temperature of the working bimetal 36 up and thus produces a greater deflection, which simulates a lower power setting, by bending when heated so that the distance between it and the snap-action switch carrier is smaller becomes.

Aus der Zeichnung ist zu erkennen, daß das Kompensations-Bimetall 26 in der Nähe seines an der Kurve anliegenden abgekröpften Endes 70 eine zweite, entgegengesetzt gerichtete Abkröpfung 75 aufweist, die dadurch hergestellt ist, daß das Kompensations-Bimetall 26 an seinem freien Ende gegabelt ist und ein Materialabschnitt nach oben und der andere nach unten abgekröpft ist. Es ist möglich, jeweils eine Abkröpfung 70 und 75 vorzusehen, es könnten jedoch auch aus Symmetriegründen zwei Abkröpfungen 75 parallel zueinander vorgesehen sein, in deren Mitte sich eine Abkröpfung 70 befindet oder umgekehrt. Die Abkröpfungen sind jeweils V- oder bogenförmig, um eine glatte Anlagefläche an der Kurve 19 oder dem Schalterträger 29 zu gewährleisten.From the drawing it can be seen that the compensation bimetal 26 in the vicinity of its bent end 70 resting against the curve has a second, opposite bend 75, which is produced by the compensation bimetal 26 being forked at its free end and one section of material is bent up and the other is bent down. It is possible to provide one bend 70 and 75, but two bends 75 could also be provided parallel to one another for reasons of symmetry, in the middle of which there is a bend 70 or vice versa. The offsets are V-shaped or arc-shaped to ensure a smooth contact surface on the curve 19 or the switch carrier 29.

Das Leistungssteuergerät ist im ausgeschalteten Zustand dargestellt. Wenn durch Drehung der Kurve 19 über die Einstellwelle 23 eine Leistungseinstellung erfolgt, dann wird über das geteilte Kompensations-Bimetall 26 der Schnappschalterträger 29 entgegen dem Uhrzeigersinn verschwenkt, wobei die bis dahin von dem auf den Betätigungspunkt einwirkenden Hebelende 44 in Ausschaltstellung gehaltene Schnappfeder die beiden Kontakte 31, 32 schließt. Dadurch wird dem Verbraucher, beispielsweise einer Kochplatte, Strom zugeführt, jedoch auch der Beheizung 39 des Arbeitsbimetalls 36, das sich so ausdehnt, daß nach gewisser Zeit das Hebelende 44 den Schnappschalter wieder zum Ausschalten bringt. Nach Abkühlung des Bimetalls 36, dessen Beheizung ebenfalls ausgeschaltet wurde, schaltet der Schnappschalter wieder ein. Es ergibt sich also eine in der relativen Einschaltdauer einstellbare Ein- und Ausschaltsteuerung.The power control unit is shown in the switched-off state. If, by turning the curve 19 via the setting shaft 23, a power setting is carried out, the snap-action switch carrier 29 is pivoted counter-clockwise via the divided compensation bimetal 26, the snap spring which until then has been held in the switched-off position by the lever end 44 acting on the actuating point, the two contacts 31, 32 closes. As a result, current is supplied to the consumer, for example a hotplate, but also the heating 39 of the working bimetal 36, which expands in such a way that after a certain time the lever end 44 brings the snap switch back to the off position. After the bimetal 36 has cooled, the heating of which has also been switched off, the snap switch switches on again. This results in a switch-on and switch-off control that can be set in the relative duty cycle.

Bei Erhöhung der Umgebungstemperatur wird das Kompensations-Bimetall 26 in der Zeichnung nach unten, also auf den Schnappschalterträger 29 zu, ausgelenkt. Dies erfolgt so lange, bis der Temperaturbereich erreicht ist, in dem eine weitere Auslenkung des Kompensations-Bimetalles zu einer Überkompensation führen würde. In diesem Bereich kommt die Abkröpfung 75 des Kompensations-Bimetalls 26 mit dem Schalterträger in Berührung, der einen Anschlag für die Abkröpfung 75 bildet. Dadurch wird die weitere Auslenkung des Kompensations-Bimetalls 26 in dem Bereich zwischen der Abkröpfung 75 und dem anderen Ende 76 des Kompensations-Bimetalls verhindert. Lediglich zwischen dem Anlagepunkt der Abkröpfung 75 an dem Träger 29 und dem Anlagepunkt der Abkröpfung 70 an der Kurve 19 verbleibt noch eine wirksame Kompensationsausbiegung des Bimetalls.When the ambient temperature rises, the compensation bimetal 26 in the drawing is deflected downward, that is to say toward the snap switch carrier 29. This continues until the temperature range is reached in which a further deflection of the compensation bimetal would lead to overcompensation. In this area, the offset 75 of the compensation bimetal 26 comes into contact with the switch carrier, which forms a stop for the offset 75. This prevents the further deflection of the compensation bimetal 26 in the region between the offset 75 and the other end 76 of the compensation bimetal. An effective compensation deflection of the bimetal remains only between the contact point of the offset 75 on the support 29 and the contact point of the offset 70 on the curve 19.

Durch die Wahl der Entfernung zwischen dem Anschlagspunkt (hier 75 gegen 29) und dem Angriffspunkt zwischen der Abkröpfung 70 und der Kurve 19 ist es möglich, den Betrag der Blockierung bzw. Behinderung der Ausdehnung zu bestimmen und somit eine degressive Kompensationskennlinie zu erzeugen. Es wäre auch möglich, mehrere, in Richtung steigender Temperatur hintereinander wirksame Anschläge zu schaffen, um eine noch flexiblere Anpassung zu erzeugen.By selecting the distance between the attachment point (here 75 against 29) and the attachment point between the offset 70 and the curve 19, it is possible to determine the amount of the blockage or obstruction of the expansion and thus to generate a degressive compensation characteristic. It would also be possible to create several stops which act in succession in the direction of increasing temperature in order to produce an even more flexible adaptation.

Die hier beschriebene Ausführungsform, bei der das Kompensations-Bimetall an dem Schnappschalterträger zum Anschlag kommt, ist bei der schwenkbaren Anordnung der Einheit Kompensations-Bimetall/Schnappschalter vorteilhaft. Bei einer nicht als ganzes schwenkbaren Anordnung könnte der Anschlag auch gehäusefest sein. Durch entsprechende Anordnung des Anschlages wäre es sogar möglich, falls erforderlich, eine Gegenkompensation zu erzeugen.The embodiment described here, in which the compensation bimetal stops on the snap switch carrier, is advantageous in the pivotable arrangement of the compensation bimetal / snap switch unit. If the arrangement cannot be pivoted as a whole, the stop could also be fixed to the housing. By arranging the stop accordingly, it would even be possible, if necessary, to generate counter-compensation.

Claims (4)

1. Regulating device for the temperature of electrically heated appliances with a working bimetallic strip (36) determining the intermittent on-time of the appliance and a compensating bimetallic strip (26) counteracting the influence of the ambient temperature on the working bimetallic strip (36), whereby in said device the compensating bimetallic strip (26) substantially removes the deformation of the working bimetallic strip (36) caused by increasing ambient temperature only up to a given value of the latter as a result of constantly increasing characteristic deformation whilst, in the case of ambient temperatures above this value, the compensating bimetallic strip (26) engages with a stop, characterized in that the stop is arranged between the fixed end (76) of the compensating bimetallic strip (26) and the effective application point (70) in such a way that that in the case of temperatures above the given value the deformation of the partial length of the compensating bimetallic strip (26) located between the application point (70) and the stop can continue to act with a correspondingly reduced compensating effect.
2. Device according to claim 1, characterized in that at its end remote from the fixed end, the compensating bimetallic strip (26) is subdivided into at least two portions (70, 75), whereof one engages with the stop (29) and the other forms the effective application point.
3. Device according to one of the preceding claims, characterized in that the compensating bimetallic strip (26) is positioned parallel to a quick-break switch (27), whose support (29) forms the stop.
4. Device according to claim 3, characterized in that quick-break switch (27) with its support (29) and the compensating bimetallic strip (26) form a cohesive unit pivotable about a splindle (28), the fixed end (76) of the compensating bimetallic strip (26) is connected to the support (29) and the application point is operable by a setting member (19).
EP82100725A 1981-02-03 1982-02-02 Regulating device for the temperature of electrically heated applianees Expired EP0057460B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82100725T ATE9936T1 (en) 1981-02-03 1982-02-02 CONTROL DEVICE FOR THE TEMPERATURE OF ELECTRICALLY HEATED APPLIANCES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813103561 DE3103561A1 (en) 1981-02-03 1981-02-03 DEVICE FOR COMPENSATING THE AMBIENT TEMPERATURE INFLUENCE ON DEVICES LIKE SWITCHES, REGULATING, CONTROL UNITS OR THE LIKE.
DE3103561 1981-02-03

Publications (3)

Publication Number Publication Date
EP0057460A2 EP0057460A2 (en) 1982-08-11
EP0057460A3 EP0057460A3 (en) 1982-09-01
EP0057460B1 true EP0057460B1 (en) 1984-10-17

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EP82100725A Expired EP0057460B1 (en) 1981-02-03 1982-02-02 Regulating device for the temperature of electrically heated applianees

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EP (1) EP0057460B1 (en)
AT (1) ATE9936T1 (en)
DE (2) DE3103561A1 (en)
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DE4032942A1 (en) * 1990-10-17 1992-04-23 Ego Elektro Blanc & Fischer DEVICE FOR CONTROLLING AN ENVIRONMENTAL INFLUENCE ON DEVICES
CN112616280B (en) * 2020-12-23 2022-07-05 南昌洋深电子科技有限公司 Signal equipment protection device of central control room of bank
CN114613643B (en) * 2022-03-24 2024-03-29 绍兴中新电器有限公司 Coupler with thermal compensation and application thereof
CN115810509B (en) * 2022-12-16 2023-10-03 佛山市九龙机器有限公司 Double-loop temperature controller

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US2427945A (en) * 1942-12-05 1947-09-23 Westinghouse Electric Corp Electric hot plate with vesseltemperature control
GB763892A (en) * 1955-01-07 1956-12-19 Richard Collier An improved thermally-responsive electric heat regulating switch
US2824192A (en) * 1956-10-05 1958-02-18 Westinghouse Electric Corp Thermally actuated switch
DE1052007B (en) * 1957-11-16 1959-03-05 Ernst Dreefs G M B H Constantly adjustable energy regulator for electrically heated devices
CH448305A (en) * 1965-12-22 1967-12-15 Licentia Gmbh Switching device for temperature regulation
DE1615231C3 (en) * 1967-04-14 1975-02-13 E.G.O. Elektro-Geraete Blanc U. Fischer, 7135 Oberderdingen Power control of electrical heating devices
DE2625716C3 (en) * 1976-06-09 1979-10-11 E.G.O. Elektro-Geraete Blanc U. Fischer, 7519 Oberderdingen Power control unit

Also Published As

Publication number Publication date
YU23482A (en) 1985-10-31
DE3103561A1 (en) 1982-08-26
YU43510B (en) 1989-08-31
EP0057460A3 (en) 1982-09-01
ATE9936T1 (en) 1984-11-15
EP0057460A2 (en) 1982-08-11
DE3260973D1 (en) 1984-11-22

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