EP0172416B1 - Résistance enveloppée et protégée contre la surcharge - Google Patents

Résistance enveloppée et protégée contre la surcharge Download PDF

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Publication number
EP0172416B1
EP0172416B1 EP85109056A EP85109056A EP0172416B1 EP 0172416 B1 EP0172416 B1 EP 0172416B1 EP 85109056 A EP85109056 A EP 85109056A EP 85109056 A EP85109056 A EP 85109056A EP 0172416 B1 EP0172416 B1 EP 0172416B1
Authority
EP
European Patent Office
Prior art keywords
switch
housing
flange
heating device
pushbutton
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
EP85109056A
Other languages
German (de)
English (en)
Other versions
EP0172416A1 (fr
EP0172416B2 (fr
Inventor
Duilio Capraro
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.)
IRCA SpA Industria Resistenze Corazzate e Affini
Original Assignee
IRCA SpA Industria Resistenze Corazzate e Affini
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=11201709&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0172416(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by IRCA SpA Industria Resistenze Corazzate e Affini filed Critical IRCA SpA Industria Resistenze Corazzate e Affini
Priority to AT85109056T priority Critical patent/ATE37127T1/de
Publication of EP0172416A1 publication Critical patent/EP0172416A1/fr
Publication of EP0172416B1 publication Critical patent/EP0172416B1/fr
Application granted granted Critical
Publication of EP0172416B2 publication Critical patent/EP0172416B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B1/00—Details of electric heating devices
    • H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H05B1/0202—Switches
    • H05B1/0216—Switches actuated by the expansion of a solid element, e.g. wire or rod
    • 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
    • H05B3/78—Heating arrangements specially adapted for immersion heating
    • H05B3/82—Fixedly-mounted immersion heaters

Definitions

  • This invention relates to a temperature limiter particularly useful with electric heater elements of the sheathed type operating in air and/or liquid media.
  • a heating device as claimed comprising a sheathed resistance heating element and temperature controlling and limiting means, so arranged to provide for temperature controlling and limiting effects and thereby protect said sheated resistance heating element against overheating.

Landscapes

  • Resistance Heating (AREA)
  • Control Of Resistance Heating (AREA)
  • Catching Or Destruction (AREA)
  • Non-Adjustable Resistors (AREA)
  • Materials For Photolithography (AREA)
  • Photoreceptors In Electrophotography (AREA)

Claims (9)

1. Dispositif chauffant comprenant un élément chaffant à résistance enveloppée (10) et des moyens de commande et de limitation de la température (18, 19) aménagés pour déterminer un effet de commande et de limitation de la température et protéger ainsi ledit élément chauffant enveloppé (10) vis-à-vis d'une surchauffe, dans lequel:
(a) ledit élément chauffant enveloppé (10) comprend:
-une enveloppe métallique tubulaire (11) entourant une résistance chauffante en serpentin (12) noyée dans un matériau isolant (14),
-deux bornes électriques (15, 16) reliées à ladite résistance chauffante en serpentin (12) et disposées aux extrémités opposées de ladite enveloppe métallique (11); et
-une traverse de support (17) reliée rigidement à ladite enveloppe métallique tubulaire (11) à proximité de ses extrémités;
(b) lesdits moyens de commande et de limitation de la température (18, 19) comprennent:
-un interrupteur de commande dont le logement (18) est supporté sur ladite traverse (17); et -une tige rigide (19) dont une extrémité libre
(20) est reliée fonctionnellement audit interrupteur et dont l'autre extrémité (21) est reliée rigidement en un point (22) à ladite enveloppe métallique tubulaire (11); ladite tige rigide (17) étant responsable de la transmission audit interrupteur de mouvements résultant de la dilatation thermique différentielle entre ladite enveloppe métallique tubulaire (11) et ladite tige rigide (19), déterminant ainsi les effets de commande et de limitation de la température résultant du fait que ledit interrupteur est actionné alternativement vers sa position ouverte ou vers sa position fermée; ledit dispositif chauffant étant caractérisé en ce que:
(c) ledit interrupteur de commande est, en fonctionnement, normalement fermé;
(d) ledit logement (18) dudit interrupteur normalement fermé est supporté sur ladite traverse (17) par des moyens à point d'appui (30, 31) et peut basculer autour desdits moyens à point d'appui (30, 31) par rapport à ladite traverse (17);
(e) ladite tige rigide (19) a son extrémité libre (20) reliée fonctionnellement audit logement (18), déterminant ainsi des mouvements de bascule dudit logement (18) autour desdits moyens à point d'appui (30, 31); et
(f) ledit logement (18) comprend un bouton poussoir de commande mobile (23) relié fonctionnellement audit interrupteur de commande normalement fermé et venant en contact avec ladite traverse (17) de manière telle que, lorsqu'il y a des mouvements de bascule dudit logement (18) en direction de ladite traverse (17), ledit bouton poussoir de commande (23) soit actionné pour ouvrir ledit interrupteur normalement fermé.
2. Dispositif chauffant selon la revendication 1, caractérisé en ce que lesdits moyens à point d'appui (30, 31) comprennent deux éléments de support (31) s'étendant à partir de ladite traverse (17), lesdits éléments de support supportant un axe (30), ledit axe étant relié de façon pivotante au logement (18) dudit interrupteur.
3. Dispositif chauffant selon la revendication 1, caractérisé en ce que ladite tige (19) est reliée à charnière audit logement (18) en un point (32) dudit logement (18) qui est situé entre ledit axe (30) et ledit bouton poussoir (23).
4. Dispositif chauffant selon la revendication 1, caractérisé en ce qu'une borne électrique (41) dudit interrupteur et une borne électrique (16) de ladite résistance chauffante en serpentin (12) sont reliées électriquement par ledit moyen élastique et électriquement conducteur (40) permettant ledit mouvement de bascule dudit logement (18) autour dudit axe (30) par rapport à ladite traverse (17).
5. Dispositif chauffant selon la revendication 4, caractérisé en ce que ledit moyen élastique et électriquement conducteur (40) comprend un fil replié en forme de "U".
6. Dispositif chauffant selon la revendication 1, caractérisé en ce que la refermeture du circuit commandé par ledit interrupteur a lieu automatiquement; ledit bouton poussoir (23) étant ramené automatiquement sous l'action de moyens élastiques connus à sa position normalement fermée lorsqu'il y a cessation de la surchauffe.
7. Dispositif chauffant selon la revendication 1, caractérisé en ce que le circuit commandé par ledit interrupteur est refermé manuellement; ledit bouton poussoir (23) comprenant des moyens de blocage (50, 51, 52) adaptés à bloquer ledit bouton poussoir (23) dans sa position de circuit ouvert à l'encontre de l'action desdits moyens élastiques connus.
8. Dispositif chauffant selon la revendication 7, caractérisé en ce que lesdits moyens de blocage (50, 51, 52) comprennent un plot (50) mobile transversalement à la direction du mouvement dudit bouton poussoir (23); ledit plot (50) venant s'engager, sous la sollicitation de moyens à ressort (51), dans au moins un siège (52) prévu dans une paroi du logement (18) dudit interrupteur, et correspondant à ladite position de circuit ouvert.
9. Dispositif chauffant selon la revendication 8, caractérisé en ce qu'un autre siège (53), correspondant à la position de circuit fermé, est prévu dans ladite paroi du logement (18) dudit interrupteur; ledit plot mobile (50) venant s'engager alternativement dans l'un ou l'autre desdits sièges (52 ou 53) lorsque le circuit électrique commandé par ledit interrupteur est ouvert ou fermé.
EP85109056A 1984-08-22 1985-07-19 Résistance enveloppée et protégée contre la surcharge Expired - Lifetime EP0172416B2 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85109056T ATE37127T1 (de) 1984-08-22 1985-07-19 Vor ueberlastung geschuetzter ummantelter widerstand.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT2290284U 1984-08-22
IT8422902U IT8422902V0 (it) 1984-08-22 1984-08-22 Resistenza elettrica corazzata autoprotetta.

Publications (3)

Publication Number Publication Date
EP0172416A1 EP0172416A1 (fr) 1986-02-26
EP0172416B1 true EP0172416B1 (fr) 1988-09-07
EP0172416B2 EP0172416B2 (fr) 1992-08-26

Family

ID=11201709

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85109056A Expired - Lifetime EP0172416B2 (fr) 1984-08-22 1985-07-19 Résistance enveloppée et protégée contre la surcharge

Country Status (4)

Country Link
EP (1) EP0172416B2 (fr)
AT (1) ATE37127T1 (fr)
DE (1) DE3564899D1 (fr)
IT (1) IT8422902V0 (fr)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB591997A (en) * 1944-07-31 1947-09-04 Arthur Harry Walter Improvements in or relating to thermostatically-controlled electric heating units
DE1138173B (de) * 1960-08-04 1962-10-18 Forbach G M B H & Co K G Temperatur-Schutzeinrichtung fuer die Heizstaebe elektrischer Heisswasserbereiter od. dgl.
US3585359A (en) * 1969-10-24 1971-06-15 Emerson Electric Co Electric heating elements
IT8321433V0 (it) * 1983-04-05 1983-04-05 Irca Spa Limitatore di temperatura in particolare per elementi riscaldanti elettrici.

Also Published As

Publication number Publication date
IT8422902V0 (it) 1984-08-22
ATE37127T1 (de) 1988-09-15
EP0172416A1 (fr) 1986-02-26
DE3564899D1 (en) 1988-10-13
EP0172416B2 (fr) 1992-08-26

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