EP0225490A2 - Limiteur de température - Google Patents

Limiteur de température Download PDF

Info

Publication number
EP0225490A2
EP0225490A2 EP86115496A EP86115496A EP0225490A2 EP 0225490 A2 EP0225490 A2 EP 0225490A2 EP 86115496 A EP86115496 A EP 86115496A EP 86115496 A EP86115496 A EP 86115496A EP 0225490 A2 EP0225490 A2 EP 0225490A2
Authority
EP
European Patent Office
Prior art keywords
inner rod
transmission member
temperature limiter
spring
actuating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP86115496A
Other languages
German (de)
English (en)
Other versions
EP0225490B1 (fr
EP0225490A3 (en
Inventor
Willi Essig
Heinz Petri
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 Elektro Geratebau GmbH
Original Assignee
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
Application filed by EGO Elektro Gerate Blanc und Fischer GmbH filed Critical EGO Elektro Gerate Blanc und Fischer GmbH
Priority to AT86115496T priority Critical patent/ATE65343T1/de
Publication of EP0225490A2 publication Critical patent/EP0225490A2/fr
Publication of EP0225490A3 publication Critical patent/EP0225490A3/de
Application granted granted Critical
Publication of EP0225490B1 publication Critical patent/EP0225490B1/fr
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
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/12—Means for adjustment of "on" or "off" operating temperature
    • H01H37/22—Means for adjustment of "on" or "off" operating temperature by adjustment of a member transmitting motion from the thermal element to contacts or latch
    • 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
    • H01H37/46—Thermally-sensitive members actuated due to expansion or contraction of a solid
    • H01H37/48—Thermally-sensitive members actuated due to expansion or contraction of a solid with extensible rigid rods or tubes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/0066—Auxiliary contact devices

Definitions

  • the invention relates to a temperature limiter for a heater, in particular a glass ceramic cooking unit, with a substantially rod-shaped temperature sensor having an outer tube and an inner rod therein with a different expansion coefficient, for actuating a signal switch arranged in a base and a circuit breaker also arranged in the base is provided for switching off the heating at a predetermined maximum temperature, a transmission element adjoining the base-side end of the inner rod engaging actuators at actuation points of both switches, which lie approximately in the extension of the inner rod.
  • a temperature limiter of this type has become known, in which the transmission element, which is influenced by an inner rod designed as a tension rod, is guided through holes in the switch in the form of an actuating plunger and is inaccessibly covered from the outside at both ends.
  • the actuators are formed by the end face of a slimmer tappet part and the shoulder surface of a tappet part with a larger diameter, the distance from which is rigidly fixed, so that a relative adjustment due to a direct change in distance between these two actuators is not possible.
  • the invention has for its object to provide a temperature limiter of the type mentioned, in particular for dual-circuit radiant heaters, which on the one hand has relatively large actuation paths with a simple and clear structure and on the other hand enables relative adjustment between the two actuators.
  • a temperature limiter of the type described at the outset in accordance with the invention in that at least one of the actuating members is connected to an adjusting device provided on the transmission member, by means of which the mutual distance between the actuating members can be changed from one another.
  • the actuators or actuation points are linearly one behind the other, preferably in the working direction of the actuators, preferably in an extension of the inner rod, despite this space-saving and relatively large actuation path configuration, a distance adjustment between the two actuators is also possible, in particular in connection with an adjustment device for the Inner rod ensures a very differentiated precise setting of both switches of the temperature limiter.
  • an actuating member is formed directly by an adjusting member lying approximately in the extension of the inner rod, in particular an adjusting screw, which can be arranged very easily from the outside in a small space, so that readjustment is possible at any time. This is particularly the case if the adjusting device is assigned to the actuating member that is removed from the inner rod.
  • a particularly advantageous development in particular of a temperature limiter of the type described, consists in that the essentially linearly movable transmission member is suspended in a freely resilient manner, in particular without contact with the base, so that no frictional forces of a bearing act on the transmission member and therefore an extremely precise switching is guaranteed.
  • the arrangement according to the invention is expediently such that at least one spring holds the transmission member in its precisely aligned position in the manner of a lever guide and leads over the actuation path while maintaining this position, for which purpose in particular a clamped on both sides of the transmission member in the housing of the temperature limiter Leaf spring is suitable, which is fixed rigidly between its clamping points, for example by rivets, spot welding or the like, on the transmission member.
  • the transmission element is designed as a penetration-free, in particular bow-shaped bridge, so that, because no penetration openings are required in the switches, conventional switches can be used without any change and also no weakening of the switch parts as a result of penetration openings must be feared.
  • the actuators can be provided in a particularly simple manner on the sides of the switches facing away from one another and can therefore be arranged so that they are easily accessible.
  • their snap springs are located on their mutually facing sides, i.e. the two switches can be arranged mirror-symmetrically to a central plane lying between them.
  • the switches in particular their snap springs, have different switching differences, the switching difference of the signal switch preferably being substantially smaller or as small as possible, while the switching spring for the circuit breaker is subject to other laws due to its thermal load due to self-heating. This is particularly the case if the circuit breaker is provided closer to the temperature sensor.
  • Temperature limiter I has a front opening and with a plate-shaped flat cover 3 ver closable housing 2 made of insulation material, in which immediately adjacent to each other and one behind the other a circuit breaker 5 and a signal switch 4 in the form of essentially identical snap switches are arranged.
  • a rod-shaped, rectilinear temperature sensor 6 is attached to the housing 2 serving as a base and essentially consists of an outer tube 7 consisting of metal and an inner rod 8 arranged in a contact-free manner therein.
  • the inner rod 8 is supported within the housing 2 with its associated end on a freely resiliently suspended transmission member 9 and rests with its other end on an adjusting member 12 which is adjustable and self-locking in the form of a stud screw in an internal thread in the associated end of the outer tube 7 is led.
  • the two switches 4, 5 each have a strip-shaped switch carrier 13 or 14, which is approximately the same as a stamped and bent part and is each equipped with a snap spring formed by a leaf spring, which carries or forms a switch contact 17 at its free end.
  • the two switch carriers 13, 14, including their snap springs 15, 16, are arranged essentially mirror-symmetrically to a central plane perpendicular to the central axis 18 of the temperature sensor 6 or to the direction of actuation in such a way that the snap springs 15, 16 lie on the sides of the switch carriers 13, 14 facing away from one another .
  • the switch contacts are assigned to the counter contacts 19, 20 which are fixed to the housing and which are connected as a component of or electrically conductively to terminal lugs 21, 22 projecting from the housing.
  • Corresponding terminal lugs 23, 24 are also connected to the switch carriers 13, 14 in an electrically conductive manner, or, in the case of the switch carrier 14, are formed in one piece with the latter.
  • the two connecting lugs 21, 23 of the one switch 4 protrude from a narrow side of the housing 2, while the connecting lugs 22, 24 of the other switch 5 protrude from the opposite narrow side of the housing 2.
  • the counter-contact 19 of the signal switch 4 is designed as a cutting-like contact tip which is immediate, i.e. without separate shading contact, cooperates in an electrically conductive manner with an end section of the associated snap spring 15. This counter contact 19 is expediently formed in one piece from sheet metal with the associated connecting tab 21.
  • the transmission member 9 is designed in the manner of a freely suspended, linearly movably mounted transmission rod as a U-shaped bracket or bridge, which in turn both in loading rich the bracket legs 25, 26 and in the area of the parallel to the temperature sensor 6 bracket crosspiece U cross-sections with outwardly directed U-schericles, so that it can be made for example from relatively thin sheet metal and still has a very high strength.
  • the bow crossbar 28 is located on the side of the switches 4, 5 facing away from the open housing side in a corresponding recess in the housing base, which merges into recesses for receiving the snap springs and contacts and from the suspension springs.
  • a bolt-shaped intermediate member 29 is worn later, the head of which rests between the U-legs 27 on the outside of the stirrup leg 25 and which passes through the stirrup leg 25 with a reduced-diameter shaft section, the latter Shaft section forms with its free end an actuator 30 lying in the central axis for the signal switch 4 closer to the temperature sensor 6.
  • the actuating element 30 is assigned a knob-shaped actuating point 31, against which the actuating element 30 rests with its end face.
  • an actuator 32 is also provided, which is formed by the associated end of an adjusting member 34 formed as an adjusting screw, which lies in the central axis 18 of the temperature sensor 6 and in a one-piece with the bracket leg 26, projecting outwards Internal thread sleeve 35 is adjustable with an external thread and can be fixed by self-locking.
  • the actuating member 32 acts via an actuating point 33 of an intermediate member 36 on a knob-shaped actuating point 37, which is also provided between the clamping zones on the associated side of the snap spring 16.
  • the intermediate members 29, 36 suitably consist of insulating material.
  • the intermediate member 36 is independent of the actuator 32 directly on the transmission member 9 in the actuating direction resiliently mounted in that it is arranged on a leg projecting freely between the actuator 32 and the actuating point 37 of an angular spring tab 38 fastened to the inside of the cross bar 28.
  • the spring 39 which is closer to the temperature sensor 6 and is in the form of a bow-shaped leaf spring, is rigid with the central portion of its bow crossbar 41 on the inside of the U crossbar of the bow leg 25, for example, by spot welding and penetrated by the actuator 30.
  • the approximately U-shaped mutually curved bow legs 42 of the spring 39 are so biased into the housing 2 that they are precisely secured in their position on the one hand by multiple contact on surfaces lying at an angle and on the other hand biased so that the bow crossbar 41st even with release from the transmission member 9 still has a certain bias towards the other end of the transmission member 9.
  • the other, substantially stronger spring 40 is designed as a helical compression spring lying in the central axis 18, which surrounds the adjusting member 34 and is supported on the one hand between the U-legs on the bracket leg 26 and on the other hand on an opposite inner surface of the housing 2.
  • This area is penetrated by an opening 43 provided in the associated housing wall facing away from the temperature sensor 6, which connects to the housing cover 3 and through which the adjusting member 34 is accessible from outside at any time for readjustment.
  • the spring 40 presses the transmission member 9 or the spherically curved end face of the intermediate member 29 against the inner rod 8 and acts together with the spring 39 as a linear guide for the transmission member 9.
  • the switch carrier 13, 14 and the counter-contacts 19, 20 carrying, made of sheet metal fasteners, the flange plate 10, the springs 39, 40 and the transmission member 9 are inserted from the open side of the housing 2 after removal of the housing cover 3 in corresponding openings and thereby substantially aligned and secured so that essentially no separate fasteners are required.
  • a web-shaped projection of the housing which extends essentially up to the housing cover 3 and against which these ends of the switch carriers 13, 14 abut, these ends serving to support the snap springs when the switches are open.
  • the areas of the switch carrier 13, 14 lying on the other side of the transmission member 9 are each provided with a profile 45 protruding from the other switch carrier, which engages in a corresponding recess in the associated plug-in slot of the housing 2, so that the respective switch carrier also in its longitudinal direction is precisely aligned.
  • the housing 2 For the positive reception of one lying adjacent to the temperature sensor 6 Profile edge of the flange plate 10, the housing 2 has a correspondingly profiled holding slot 44.
  • the flange plate 10 is provided with a rivet or the like. attached to the housing 2.
  • the inner rod 8 which is designed as a pressure rod, is shortened relative to the outer tube 7, so that the signal switch 4 according to FIG. I closes, for example at a temperature of approximately 60 °, and thereby switches on an optical or similar hot indicator which indicates that the cooking unit o . Like. must not be touched. If the temperature rises further, the actuating member 30 lifts off the actuating point 31 and, at the set maximum temperature, the circuit breaker 5 is opened and the heating is thereby switched off. The two switching points are adjusted via the adjusting members 12, 34 located in a central axis 18.

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Thermally Actuated Switches (AREA)
  • Control Of Resistance Heating (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Glass Compositions (AREA)
  • Inorganic Insulating Materials (AREA)
  • Control Of Temperature (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
EP86115496A 1985-11-14 1986-11-08 Limiteur de température Expired - Lifetime EP0225490B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86115496T ATE65343T1 (de) 1985-11-14 1986-11-08 Temperaturbegrenzer.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3540414 1985-11-14
DE19853540414 DE3540414A1 (de) 1985-11-14 1985-11-14 Temperaturbegrenzer

Publications (3)

Publication Number Publication Date
EP0225490A2 true EP0225490A2 (fr) 1987-06-16
EP0225490A3 EP0225490A3 (en) 1988-09-14
EP0225490B1 EP0225490B1 (fr) 1991-07-17

Family

ID=6285988

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86115496A Expired - Lifetime EP0225490B1 (fr) 1985-11-14 1986-11-08 Limiteur de température

Country Status (7)

Country Link
US (1) US4695816A (fr)
EP (1) EP0225490B1 (fr)
JP (1) JPH0775137B2 (fr)
AT (1) ATE65343T1 (fr)
DE (2) DE3540414A1 (fr)
ES (1) ES2022804B3 (fr)
YU (1) YU193186A (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0279368A3 (en) * 1987-02-19 1989-11-15 E.G.O. Elektro-Gerate Blanc U. Fischer Temperature limiter
EP0383717A2 (fr) * 1989-02-17 1990-08-22 Emerson Electric Co. Assemblage d'un thermostat
EP0394693A2 (fr) * 1989-04-22 1990-10-31 E.G.O. Elektro-Geräte Blanc und Fischer GmbH & Co. KG Appareil de commutation de température
EP0476304A2 (fr) * 1990-09-15 1992-03-25 E.G.O. Elektro-Geräte Blanc und Fischer GmbH & Co. KG Capteur de température
EP0993015A2 (fr) * 1998-10-09 2000-04-12 E.G.O. ELEKTRO-GERÄTEBAU GmbH Dispositif de commutation pour appareil de chauffage élèctrique
EP1223597A1 (fr) * 2001-01-10 2002-07-17 Electrovac, Fabrikation Elektrotechnischer Spezialartikel Gesellschaft M.B.H. Limiteur de température
WO2009027687A1 (fr) * 2007-09-01 2009-03-05 Ceramaspeed Limited Capteur de température

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0252523A3 (fr) * 1986-07-11 1990-02-07 Nibex Company, Ltd. Capteur de température
DE3913288A1 (de) * 1989-04-22 1990-10-25 Ego Elektro Blanc & Fischer Temperatur-schaltgeraet
DE4138815A1 (de) * 1991-11-26 1993-05-27 Ego Elektro Blanc & Fischer Sockel fuer eine elektromechanische funktionseinheit
DE4138814C2 (de) * 1991-11-26 2002-08-01 Ego Elektro Geraetebau Gmbh Temperatur-Schaltgerät
US7008783B1 (en) 1992-09-22 2006-03-07 Maruha Corporation Gene encoding chondroitinase ABC and uses therefor
AT401114B (de) * 1993-12-03 1996-06-25 Electrovac Temperaturregler
DE19745096C2 (de) * 1997-10-11 2001-11-22 Diehl Ako Stiftung Gmbh & Co Schalteinrichtung für eine Kochzonenheizung
US6250931B1 (en) * 1999-11-02 2001-06-26 Kinetic Group L.L.C. Detachable power supply apparatus
US6267602B1 (en) * 1999-11-02 2001-07-31 Kinetic Group L.L.C. Detachable power supply apparatus
AT409680B (de) * 2001-04-17 2002-10-25 Electrovac Temperaturbegrenzer
AT411554B (de) * 2002-02-25 2004-02-25 Electrovac Temperaturfühler
CN101216533B (zh) * 2008-01-04 2010-06-02 广东格兰仕集团有限公司 热切断器的自动检测设备及其工作方法
DE102009038960A1 (de) * 2009-08-19 2011-02-24 E.G.O. Elektro-Gerätebau GmbH Temperaturfühler und Verfahren zur Justierung eines solchen Temperaturfühlers
EP3116286A4 (fr) * 2015-05-15 2017-04-19 Shenzhen Foda Electric Co., Ltd. Plaque chauffante à régulation de température, isolée thermiquement

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH112032A (de) * 1924-08-29 1925-10-16 Zbinden Emil Kontaktvorrichtung an einer elektrischen Temperaturreguliereinrichtung.
CH275845A (de) * 1949-06-08 1951-06-15 Kieback Erich Ing Dr Thermostat.
GB1277848A (en) * 1970-04-16 1972-06-14 Ranco Controls Ltd Thermostat
DE2839161A1 (de) * 1978-09-08 1980-03-20 Ego Regeltech Temperaturbegrenzer fuer eine glaskeramik-kocheinheit
FR2548825A1 (fr) * 1983-07-07 1985-01-11 Electrovac Dispositif d'indication de chaleur et de regulation ou limitation de la temperature de corps de chauffe par rayonnement ou par contact d'appareils de cuisson electriques
EP0141923B1 (fr) * 1983-09-17 1988-05-25 E.G.O. Elektrogeräte AG Limiteur de température pour plaques de cuisson en vitro-céramique

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1806651A (en) * 1931-05-26 Marine pumping system
US1902451A (en) * 1929-04-19 1933-03-21 Honeywell Regulator Co Thermostatic switch for use with heaters
CH208830A (de) * 1939-04-19 1940-02-29 Landis & Gyr Ag Elektrischer Schalter mit bei kleinem Weg ohne Verwendung eines Magneten kippendem, beweglichem Kontaktglied.
NL66022C (fr) * 1944-10-24
US3100758A (en) * 1959-12-31 1963-08-13 Continental Can Co Vinyl halide copolymers with oxirane-containing side groups having improved heat stability
GB1238286A (fr) * 1967-11-02 1971-07-07
US3906424A (en) * 1974-05-13 1975-09-16 Therm O Disc Inc Cooking range and control therefor
DE2748109C2 (de) * 1977-10-27 1982-04-15 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Elektrokochgerät
DE3100758A1 (de) * 1981-01-13 1982-09-02 Ako Werke Gmbh & Co Schalteinrichtung
DE3333645A1 (de) * 1983-09-17 1985-04-11 E.G.O. Elektro-Geräte Blanc u. Fischer, 7519 Oberderdingen Temperaturbegrenzer fuer eine glaskeramikkocheinheit

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH112032A (de) * 1924-08-29 1925-10-16 Zbinden Emil Kontaktvorrichtung an einer elektrischen Temperaturreguliereinrichtung.
CH275845A (de) * 1949-06-08 1951-06-15 Kieback Erich Ing Dr Thermostat.
GB1277848A (en) * 1970-04-16 1972-06-14 Ranco Controls Ltd Thermostat
DE2839161A1 (de) * 1978-09-08 1980-03-20 Ego Regeltech Temperaturbegrenzer fuer eine glaskeramik-kocheinheit
FR2548825A1 (fr) * 1983-07-07 1985-01-11 Electrovac Dispositif d'indication de chaleur et de regulation ou limitation de la temperature de corps de chauffe par rayonnement ou par contact d'appareils de cuisson electriques
EP0141923B1 (fr) * 1983-09-17 1988-05-25 E.G.O. Elektrogeräte AG Limiteur de température pour plaques de cuisson en vitro-céramique

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0279368A3 (en) * 1987-02-19 1989-11-15 E.G.O. Elektro-Gerate Blanc U. Fischer Temperature limiter
EP0383717A2 (fr) * 1989-02-17 1990-08-22 Emerson Electric Co. Assemblage d'un thermostat
EP0383717A3 (fr) * 1989-02-17 1991-05-29 Emerson Electric Co. Assemblage d'un thermostat
EP0394693A2 (fr) * 1989-04-22 1990-10-31 E.G.O. Elektro-Geräte Blanc und Fischer GmbH & Co. KG Appareil de commutation de température
EP0394693A3 (fr) * 1989-04-22 1991-07-03 E.G.O. Elektro-Geräte Blanc und Fischer GmbH & Co. KG Appareil de commutation de température
EP0476304A2 (fr) * 1990-09-15 1992-03-25 E.G.O. Elektro-Geräte Blanc und Fischer GmbH & Co. KG Capteur de température
EP0476304A3 (en) * 1990-09-15 1992-10-28 E.G.O. Elektro-Geraete Blanc U. Fischer Temperature sensor
EP0993015A2 (fr) * 1998-10-09 2000-04-12 E.G.O. ELEKTRO-GERÄTEBAU GmbH Dispositif de commutation pour appareil de chauffage élèctrique
EP0993015A3 (fr) * 1998-10-09 2001-03-28 E.G.O. ELEKTRO-GERÄTEBAU GmbH Dispositif de commutation pour appareil de chauffage élèctrique
EP1223597A1 (fr) * 2001-01-10 2002-07-17 Electrovac, Fabrikation Elektrotechnischer Spezialartikel Gesellschaft M.B.H. Limiteur de température
US6724294B2 (en) 2001-01-10 2004-04-20 Electrovac, Fabrikation Elektrotechnischer Spezialartikel Gesellschaft M.B.H. Temperature limiter
WO2009027687A1 (fr) * 2007-09-01 2009-03-05 Ceramaspeed Limited Capteur de température

Also Published As

Publication number Publication date
JPS62165823A (ja) 1987-07-22
DE3540414A1 (de) 1987-05-21
JPH0775137B2 (ja) 1995-08-09
US4695816A (en) 1987-09-22
ES2022804B3 (es) 1991-12-16
YU193186A (en) 1988-10-31
EP0225490B1 (fr) 1991-07-17
ATE65343T1 (de) 1991-08-15
EP0225490A3 (en) 1988-09-14
DE3680301D1 (de) 1991-08-22

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