EP0194512B2 - Elektrische Beheizung für ein Bimetall, insbesondere für ein elektrisches Leistungssteuergerät - Google Patents

Elektrische Beheizung für ein Bimetall, insbesondere für ein elektrisches Leistungssteuergerät Download PDF

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Publication number
EP0194512B2
EP0194512B2 EP86102502A EP86102502A EP0194512B2 EP 0194512 B2 EP0194512 B2 EP 0194512B2 EP 86102502 A EP86102502 A EP 86102502A EP 86102502 A EP86102502 A EP 86102502A EP 0194512 B2 EP0194512 B2 EP 0194512B2
Authority
EP
European Patent Office
Prior art keywords
bimetal
support
power control
control device
contact
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
EP86102502A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0194512A2 (de
EP0194512A3 (en
EP0194512B1 (de
Inventor
Willi Essig
Siegfried Mannuss
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.)
Ego Elektrogeraete AG
Original Assignee
EGO Elektro Geraete AG
EGO Elektro Gerate Blanc und Fischer 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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6264582&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0194512(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by EGO Elektro Geraete AG, EGO Elektro Gerate Blanc und Fischer GmbH filed Critical EGO Elektro Geraete AG
Priority to AT86102502T priority Critical patent/ATE75344T1/de
Publication of EP0194512A2 publication Critical patent/EP0194512A2/de
Publication of EP0194512A3 publication Critical patent/EP0194512A3/de
Application granted granted Critical
Publication of EP0194512B1 publication Critical patent/EP0194512B1/de
Publication of EP0194512B2 publication Critical patent/EP0194512B2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H61/00—Electrothermal relays
    • H01H61/02—Electrothermal relays wherein the thermally-sensitive member is heated indirectly, e.g. resistively, inductively
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/32—Thermally-sensitive members
    • H01H37/52—Thermally-sensitive members actuated due to deflection of bimetallic element
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H89/00—Combinations of two or more different basic types of electric switches, relays, selectors and emergency protective devices, not covered by any single one of the other main groups of this subclass
    • H01H89/04—Combination of a thermally actuated switch with a manually operated switch

Definitions

  • the invention relates to an electrical heater for a bimetal, in particular for an electrical power control device, according to the preamble of claim 1.
  • An electrical power control device which is provided for electric heating devices and supplies the consumer with the power in individual power pulses of different relative duty cycles, has become known from DE-C-26 25 716. It has a bimetal in the form of an angle lever, which acts at one end on an electrical snap switch and on whose longer bimetal working leg, which is arranged transversely to the snap switch, an electrical heating winding is wound with the interposition of insulating plates.
  • the electrical heating winding must consist of very thin wire when the control heating is connected in parallel with the consumer, because its attachment and contacting is a critical point in the manufacture and operation, because it should only consume very little power.
  • GB-A-1 515 356 describes a bimetal heater according to the preamble of claim 1. While one side of the carrier is pressed against the bimetal by a spring bolt, the other side is contacted by a bow spring and pressed simultaneously.
  • DE-U-7 327 063 shows a heating element which is contacted and fixed on both sides with a plate-like carrier by insert shoes which are fixed by bending tabs on a bimetal.
  • the object of the invention is to provide an electric heater for a bimetal and thus an improved power control device, which are simple in construction and have improved operational reliability and quick response even in the lower temperature range.
  • the carrier should also preferably be arranged on the side of the bimetal with the material with a greater coefficient of expansion and the bimetal can preferably be largely straight at room temperature in the region covered by the carrier. As a result, the bimetal bends away from the ceramic carrier, but is at a very short distance from it at the beginning of the heating.
  • the clip can be a preferably pocket-shaped spring material part fastened to the bimetal, which in particular has lateral guide edges.
  • the carrier can therefore simply be pushed into this pocket during assembly and is thus automatically contacted on one side.
  • the resistance layer can be contacted by a contact spring with a transmission contact.
  • This relatively light and thin contact spring yields slightly to the movements of the bimetal and thus the wearer and is sufficient to transmit the low heating current of the bimetal.
  • the contact spring can be shaped into a preferably oval cylinder and fixed in at least one corresponding opening in a housing. This creates a non-rotatable axis that fixes the contact spring in the desired position on the housing.
  • the free end of the bimetal which is preferably curved, can act directly on the actuation point of a snap switch. This eliminates the need for transmission levers or the like.
  • a snap switch can be used, the snap spring of which is attached to a flexible spring support and which is actuated by bending the spring support relative to a spring tongue supported on a fixed part.
  • the bimetal forms one leg of an angle lever which is pivotably mounted close to its break point, on the other leg of which an adjustment curve acts.
  • This leg of the angle lever can consist of two approximately parallel strips, one of which is formed by a compensation bimetal and preferably located on the other strip supported by an adjusting screw. This creates a jointly swiveling working bimetal / compensation bimetal unit that only needs one swivel bearing for all movements acting on the snap switch (working travel of the bimetal, compensation travel and adjustment travel of the setting curve).
  • a helical spring advantageously presses this angle lever against the adjustment curve.
  • it can be arranged on a preferably bolt-shaped guide part which, during assembly, can be snapped behind a housing shoulder, preferably a housing slot, with a tensioned coil spring deflected from its central axis and can be disengaged when the angle lever is actuated.
  • the tensioned coil spring is thus fixed in the slot by means of the bolt.
  • the power control device can contain switch-off and / or signal contact springs which run approximately parallel to one another, one of the contact springs in the "off" state of the power control device being in a depression of a switching curve and preferably acting on another (or more) of the contact springs via an insulating contact piece.
  • this enables space-saving attachment of the contacts which are used for signal contact or double-pole disconnection and are manually operated when the power control device is switched on, and on the other hand the contacts are in the "off” state, i.e. the vast majority of the time, in an unloaded state and so can not tire.
  • the power control device 11 shown has a housing 12 which consists of a housing base plate 13 and a housing cover 14. They consist of thermosetting plastic material and can be screwed together at two corners with screws 15.
  • An adjusting shaft 16 is mounted in both housing parts and carries an adjusting curve 17 and a switching curve 18.
  • An angle lever 20 is pivotally mounted about a pivot axis 19 in a housing corner and bears a working bimetal 22 and a compensation bimetal 23, which are riveted to the axle carrier 21, on a U-shaped axle carrier 21 offset in the longitudinal direction of the axis.
  • the working bimetal 22 first extends essentially straight approximately parallel to one side of the housing and is then bent in the shape of an arc in the direction of the center of the housing.
  • the snap switch 31 is arranged approximately parallel to the main extent of the working bimetal 22 between the latter and the setting shaft 16 or the switching curve 18 arranged thereon.
  • the normally open contact 29 cooperates with a fixed mating contact 32, which, like the other switch connections, is connected through the housing base plate to terminal tabs 33 which extend from the rear of the switch, i.e. protrude vertically from the outside of the housing base plate 13.
  • Other types of snap-action switches can also be used, which also allow switching contacts to be provided if desired.
  • the resistance layer 37 can consist of known thick-film resistors, for example based on bismuth or Ru2O7.
  • the carrier can consist of Al2O3.
  • the pocket 39 formed by the clamp 35 extends over the entire width of the working bimetal 22 and the approximately equally wide carrier 36 and has lateral angled portions 40 which guide the carrier 36. Two wart-shaped features 41 in the clamp 35 press on one of the contact surfaces 38 and thus ensure a secure hold and good contact.
  • the carrier is held at its root in contact with the bimetal 22 and, after an offset 34 in the bimetal, at a small distance parallel to it, at least at room temperature, if the bimetal runs essentially straight in this area.
  • the bimetal bends away from the carrier, but then also receives sufficient radiant heat at the higher temperatures, so that there is still sufficient heat transfer. It is essential, however, that the good contact results in a quick response in the lower temperature range.
  • the other end of the carrier 36 is contacted by a thin contact spring 42 which rests on a contact surface 38 with laterally bent ends.
  • the material of the contact spring is widened at the fixed end and rolled into an oval cylinder 43, which lies in corresponding recesses in the housing parts 13, 14 and positions the contact spring.
  • the power is supplied via a welded wire 44 from a connecting tongue.
  • the contact spring thus forms a connection which moves with the end of the carrier and keeps its contact surface itself clean due to this movement.
  • the compensation bimetal 23 initially runs approximately at right angles to the working bimetal 22 and then bends slightly towards the center of the switch.
  • a spring plate strip 45 is attached parallel to it in the area of the axle support 21 and has a V-shaped bend 46 into which an adjusting screw 47 screwed into the free end of the compensation bimetal engages. By means of the adjusting screw 47, the compensation bimetal 23 and the strip 45 can be adjusted in their distance from one another for adjusting the power control device.
  • the setting curve has a spiral outer surface 52, which ends in its section with the largest radius in a projecting cam 53, which contains a latching recess, in which the configuration 46 shown in FIG. 1 shows the power control device in the "off" state 11 lies.
  • a depression 54 At the end of the curve with the smallest radius there is a depression 54 which ensures reliable control of the maximum output (100% relative duty cycle).
  • two contact springs 60 and 61 are provided in the housing, which bear at their free ends contacts which are provided for signal contact or for switching off the second pole of the household power supply.
  • the self-resilient contact springs are attached on one side to holders inserted into the housing and integral with the flat tabs.
  • the contact spring 60 running close to the setting shaft has a bend 62 which runs on the switching curve 18 and, in the illustrated "off" state of the power control device 11, lies in a corresponding depression in the switching curve 18, is thereby relaxed and the contacts of both contact springs 60, 61 open Has.
  • the contact spring 61 for signal contact ie the indication whether the power control device is switched on, is actuated by an insulating pressure piece 64 which is fastened to the contact spring 60.
  • the switching curve 18 has a concentric outer surface.
  • the mode of operation corresponds to that of a power control unit. If, when switched on by turning the adjusting shaft in FIG. 1 in a clockwise direction, the bend 46 comes out of the catch, whereby the user has to overcome resistance, the angle lever pivots counterclockwise to the desired setting value, as a result of which the working bimetal 22 has its free end 24 the pushing spring carrier 30, which presses against it, gives space for pivoting counterclockwise. As a result, the snap switch 31 closes the previously opened contacts 29, 32 when the snap spring 26 is snapped and a connected consumer receives current as does the resistance layer 37, which is connected in parallel with the consumer, i.e. is operated with the full mains voltage.
  • the bimetallic heater described is particularly well suited for a power control device, but can also be used for other devices in which an advantageous heating of a bimetal or similar part is important, e.g. in thermal time switches.
  • the position and size of the bend 34 of the working bimetal 22 can be used to determine the desired degree of thermal coupling of the heating to the bimetal, for example in order to vary the switching frequency. Beam and bimetal could also be in contact with one another over most of the heating area.

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Thermally Actuated Switches (AREA)
  • Control Of Resistance Heating (AREA)
  • Control Of Temperature (AREA)
  • Means For Warming Up And Starting Carburetors (AREA)
EP86102502A 1985-03-08 1986-02-26 Elektrische Beheizung für ein Bimetall, insbesondere für ein elektrisches Leistungssteuergerät Expired - Lifetime EP0194512B2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86102502T ATE75344T1 (de) 1985-03-08 1986-02-26 Elektrische beheizung fuer ein bimetall, insbesondere fuer ein elektrisches leistungssteuergeraet.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3508248 1985-03-08
DE19853508248 DE3508248A1 (de) 1985-03-08 1985-03-08 Elektrische beheizung fuer ein bimetall, insbesondere fuer ein elektrisches leistungssteuergeraet

Publications (4)

Publication Number Publication Date
EP0194512A2 EP0194512A2 (de) 1986-09-17
EP0194512A3 EP0194512A3 (en) 1987-12-23
EP0194512B1 EP0194512B1 (de) 1992-04-22
EP0194512B2 true EP0194512B2 (de) 1996-04-03

Family

ID=6264582

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86102502A Expired - Lifetime EP0194512B2 (de) 1985-03-08 1986-02-26 Elektrische Beheizung für ein Bimetall, insbesondere für ein elektrisches Leistungssteuergerät

Country Status (8)

Country Link
US (1) US4704595A (enrdf_load_stackoverflow)
EP (1) EP0194512B2 (enrdf_load_stackoverflow)
JP (1) JPS61216212A (enrdf_load_stackoverflow)
AT (1) ATE75344T1 (enrdf_load_stackoverflow)
AU (1) AU589607B2 (enrdf_load_stackoverflow)
DE (2) DE3508248A1 (enrdf_load_stackoverflow)
ES (1) ES8706288A1 (enrdf_load_stackoverflow)
YU (1) YU46519B (enrdf_load_stackoverflow)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3623700C2 (de) * 1986-07-14 1996-02-08 Bosch Siemens Hausgeraete Leistungssteuergerät
DE3639186A1 (de) * 1986-11-15 1988-05-26 Ego Elektro Blanc & Fischer Elektro-schaltgeraet, insbesondere zur leistungssteuerung
DE3710387A1 (de) * 1987-04-01 1988-10-13 Thermostat & Schaltgeraetebau Leistungssteuergeraet
DE3813798A1 (de) * 1988-04-23 1989-11-02 Ego Elektro Blanc & Fischer Schaltgeraet fuer waermegeraete oder dgl.
DE3842171A1 (de) * 1988-12-15 1990-06-28 Barlian Reinhold Verzoegerungsrelais
US4947044A (en) * 1989-03-20 1990-08-07 The Boeing Company Method and apparatus for covertly viewing a target using infrared radiation
JP2585148B2 (ja) * 1991-04-05 1997-02-26 ウチヤ・サーモスタット株式会社 フィルム状発熱体内蔵型サーモスタット
GB2266184B (en) * 1992-04-09 1995-07-12 Ceramaspeed Ltd Temperature-compensated load energising device
JP2585164B2 (ja) * 1992-07-07 1997-02-26 ウチヤ・サーモスタット株式会社 サーモプロテクタ
US5191310A (en) * 1992-07-09 1993-03-02 Eaton Corporation Adjustable cycling switch for electric range
DE9304533U1 (de) * 1993-03-25 1993-05-19 E.G.O. Elektro-Geräte Blanc u. Fischer, 7519 Oberderdingen Steuergerät, insbesondere Leistungs-Steuergerät für Elektro-Wärmegeräte
JP2920103B2 (ja) * 1996-01-29 1999-07-19 ウチヤ・サーモスタット株式会社 サーマルプロテクタ
DE19736308A1 (de) * 1997-08-21 1999-02-25 Ego Elektro Geraetebau Gmbh Leistungssteuergerät
DE19833983A1 (de) * 1998-07-29 2000-02-03 Ego Elektro Geraetebau Gmbh Verfahren zur Herstellung eines elektrischen Schaltgeräts und elektrisches Schaltgerät
CA2369527C (en) * 2001-01-31 2005-01-04 Robertshaw Controls Company Switching system for plural simmer voltages
US6538549B1 (en) * 2001-08-30 2003-03-25 Blue Sea Systems Advanced electrical circuit breaker system and method
US6888441B2 (en) * 2003-08-28 2005-05-03 Emerson Electric Co. Apparatus adapted to be releasably connectable to the sub base of a thermostat
DE202004007436U1 (de) * 2004-05-10 2004-07-22 Dreefs Gmbh Schaltgeräte Und Systeme Elektrisches Leistungssteuergerät
FI124624B (en) 2012-06-29 2014-11-14 Murata Manufacturing Co Improved oscillating gyroscope
CN103426681B (zh) * 2013-08-30 2016-06-22 蒋闯 可控可锁定保护开关、开关控制系统及锂电池
US11566793B2 (en) 2015-01-20 2023-01-31 Robertshaw Controls Company Electro-mechanical energy regulator providing enhanced simmer performance
CN108335945B (zh) * 2018-04-12 2019-12-31 甘跃斌 一种闪动式双温联动温控器
US11810741B2 (en) 2020-11-09 2023-11-07 Robertshaw Controls Company Increased push travel alternative for energy regulator
CN112490090B (zh) * 2020-12-25 2025-06-20 浙江奥来电器有限公司 一种断路器的动触头机构

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1263945B (de) * 1955-09-30 1968-03-21 Arbor Ann Energieregler
GB786121A (en) * 1955-10-03 1957-11-13 Proctor Electric Co Wattage controller system for electric heaters
US3059085A (en) * 1959-09-18 1962-10-16 Stevens Mfg Co Inc Temperature control circuit
DE1665039A1 (de) * 1966-04-30 1970-01-29 Walter Meuschel Bimetallschalter
DE1648322A1 (de) * 1967-07-20 1971-03-25 Vdo Schindling Mess- oder Schaltglied aus Bimetall
GB1201537A (en) * 1968-04-10 1970-08-05 Diamond H Controls Ltd Improvements in or relating to thermal control means
US3846726A (en) * 1973-03-15 1974-11-05 Emerson Electric Co Bimetal actuator with electrical resistance heater
DE7327063U (de) * 1973-07-24 1973-12-06 Westfaelische Kupfer- Und Messingwerke Ag Befestigungsvorrichtung fur elektrische Beheizungen von Bimetall Streifen
DE2625715B2 (de) * 1976-06-09 1979-01-18 E.G.O. Elektro-Geraete Blanc U. Fischer, 7519 Oberderdingen Leistungssteuergerät
DE2625716C3 (de) * 1976-06-09 1979-10-11 E.G.O. Elektro-Geraete Blanc U. Fischer, 7519 Oberderdingen Leistungssteuergerät
GB1515356A (en) * 1976-08-02 1978-06-21 Emi Ltd Electric switch
DE3143691A1 (de) * 1981-11-04 1983-05-11 E.G.O. Elektro-Geräte Blanc u. Fischer, 7519 Oberderdingen Steuerbeheizung fuer ein leistungssteuergeraet
JPS58108625A (ja) * 1981-12-21 1983-06-28 株式会社日立製作所 厚膜リレ−

Also Published As

Publication number Publication date
DE3684940D1 (de) 1992-05-27
YU46519B (sh) 1993-11-16
DE3508248A1 (de) 1986-09-11
ES552774A0 (es) 1987-06-01
JPS61216212A (ja) 1986-09-25
EP0194512A2 (de) 1986-09-17
US4704595A (en) 1987-11-03
EP0194512A3 (en) 1987-12-23
EP0194512B1 (de) 1992-04-22
ES8706288A1 (es) 1987-06-01
JPH0582693B2 (enrdf_load_stackoverflow) 1993-11-22
AU589607B2 (en) 1989-10-19
YU33086A (en) 1988-02-29
ATE75344T1 (de) 1992-05-15
AU5440386A (en) 1986-09-11

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