EP0027647A1 - Interrupteur de sécurité de température - Google Patents

Interrupteur de sécurité de température Download PDF

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Publication number
EP0027647A1
EP0027647A1 EP80106323A EP80106323A EP0027647A1 EP 0027647 A1 EP0027647 A1 EP 0027647A1 EP 80106323 A EP80106323 A EP 80106323A EP 80106323 A EP80106323 A EP 80106323A EP 0027647 A1 EP0027647 A1 EP 0027647A1
Authority
EP
European Patent Office
Prior art keywords
sleeve
fusible link
solder
movement
housing
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
EP80106323A
Other languages
German (de)
English (en)
Other versions
EP0027647B1 (fr
Inventor
Walter Hollweck
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.)
INTER CONTROL Hermann Koehler Electrik GmbH and Co KG
Original Assignee
INTER CONTROL Hermann Koehler Electrik GmbH and Co KG
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 INTER CONTROL Hermann Koehler Electrik GmbH and Co KG filed Critical INTER CONTROL Hermann Koehler Electrik GmbH and Co KG
Priority to AT80106323T priority Critical patent/ATE2916T1/de
Publication of EP0027647A1 publication Critical patent/EP0027647A1/fr
Application granted granted Critical
Publication of EP0027647B1 publication Critical patent/EP0027647B1/fr
Expired 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
    • H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
    • H01H37/76—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material
    • H01H37/764—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material in which contacts are held closed by a thermal pellet

Definitions

  • the invention relates to a temperature fuse switch with the features of the preamble of claim 1.
  • Temperature fuse switches with a fusible link are generally e.g. B. from DE-AS 20 12 426 known.
  • the soldering iron insert consists of a solder in the form of a round disk or tablet which is fastened within a recess in the insulating material housing and an opening in the heat transfer plate made of thermally highly conductive material spanned. The diameter of this opening is larger than the diameter of the actuating plunger resting on the top of the fusible link.
  • the disadvantage of this known temperature fuse switch consists in its poor long-term behavior. This is disadvantageous for use as a temperature fuse. Although a defined melting point is to be expected for the solder solders used due to their alloy composition, the solder will soften even before the melting temperature is reached. This means that with prolonged exposure to temperature - but not yet the intended triggering temperature - a drop in the strength of the fusible link occurs, which can lead to a premature response of the temperature fuse due to the pretension exerted by the contact spring on the movement plunger. Another disadvantage is that the solder is largely open. When oxygen is applied to various fusible links, the melting point can change due to oxidation.
  • the invention has for its object to form a temperature fuse switch of the type mentioned so that the aforementioned disadvantages are avoided.
  • the temperature fuse switch should be designed in this way; that the tolerance of its response temperature is narrowed and maintained over a long period of time. This object is achieved by the characterizing part of patent claim 1.
  • the invention ensures that the softened or liquefied solder is not immediately in the radial direction - based on the longitudinal axis of the movement ram - can dodge. Rather, it must first emerge in the axial direction - based on the longitudinal axis and the direction of movement of the movement plunger - from the two ends of the sleeve before it can be pushed away in the radial direction and only then releases the opening path for the movement plunger or the contact spring.
  • the fusible link is prevented from reducing the effective height of the fusible link insert by slow, radial evasion and thus at least initiating the opening process. Before the temperature of the final melting point is reached, it is largely impossible for the solder to escape from the two sleeve ends.
  • the characterizing part of claim 2 enables that after the liquefaction of the fusible link, the sleeve is automatically lifted slightly from its support on the heat transfer plate in such a way that the fusible link can emerge from both ends of the sleeve and can be displaced in the radial direction from the opening path of the movement plunger.
  • the characterizing part of claim 3 has the advantage that the effective passage cross-sections for the liquefied solder at the upper and at the lower sleeve outlet can be coordinated with one another in such a way that the outlet of the liquefied Solder from both ends of the sleeve begins practically simultaneously. This prevents the solder from prematurely escaping from the lower end of the sleeve adjacent to the heat transfer plate.
  • Claim 4 contains a particularly advantageous constructive solution to the concept which is basically stated in the characterizing part of claim 3. Moreover, the characterizing features of claims 3 and 4 take into account the fact that there is a temperature gradient between the end of the fusible link facing the heat transfer plate and the end facing the movement plunger such that the fusible link in the region of the movement plunger is always somewhat 'colder and of greater strength is as in the area of the heat transfer plate.
  • the solder only emerges from the sleeve at both ends when it is largely liquefied, so that the contact spring carries out the opening movement of the circuit at a higher speed.
  • the fusible link is also largely encapsulated to prevent oxidation attack from the outside.
  • the heat transfer plate also need not be provided with an opening for the passage of the movement tappet.
  • the insulating material housing is provided with a recess 12, the lower opening of which is covered by a heat transfer plate 13 made of thermally highly conductive material or is closed.
  • the recesses 11 and 12 are connected to one another by a channel 14 which is penetrated by a movement tappet 15.
  • the movement plunger 15 is of a much greater length than the channel 14 in such a way that it protrudes far from the channel with its two ends. With its lower end 16, the movement plunger 15 protrudes into the upper end of a sleeve 17, which is primarily filled with fusible solder 18 below the lower end 16 of the plunger 15 and stands on the inside 19 of the heat transfer plate 13 with its lower end 20. With its upper end 21, the sleeve 17 surrounds the lower end 16 of the movement plunger 15 with play.
  • the movement plunger 15 rests with its upper end 22 on the underside of the contact spring 9 and holds its free end 10 in the closed position against the mating contact 7 of the left connection 2.
  • the channel 14 is dimensioned in this way that the movement plunger 15 is freely displaceable in the direction of its longitudinal axis 23 within the insulating material housing 1. Between the lower end 16 of the movement plunger 15 and the inner wall 24 of the sleeve 17 there remains an annular gap 25 sufficient for the liquefied solder 18 to pass through.
  • the sleeve 17 is provided with an inwardly projecting annular collar 31 formed on its inner wall 24. As a result, the passage cross section of the lower end 20 of the sleeve 17 is reduced.
  • the solder 18 liquefies. He displaces the thin molten solder 18, which emerges from the upper end 21 and the lower end 20 of the sleeve while slightly lifting it from the heat transfer plate 13 first in the axial direction up and down and then in the radial direction into the free space of the recess 12 .
  • the stroke of the movement plunger 15 is dimensioned such that a secure opening of the current path between the electrical connections 2, 3 is ensured.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Fuses (AREA)
  • Thermally Actuated Switches (AREA)
EP80106323A 1979-10-20 1980-10-17 Interrupteur de sécurité de température Expired EP0027647B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80106323T ATE2916T1 (de) 1979-10-20 1980-10-17 Temperatur-sicherungsschalter.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2942478 1979-10-20
DE19792942478 DE2942478A1 (de) 1979-10-20 1979-10-20 Temperatur-sicherungsschalter

Publications (2)

Publication Number Publication Date
EP0027647A1 true EP0027647A1 (fr) 1981-04-29
EP0027647B1 EP0027647B1 (fr) 1983-03-30

Family

ID=6083973

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80106323A Expired EP0027647B1 (fr) 1979-10-20 1980-10-17 Interrupteur de sécurité de température

Country Status (4)

Country Link
US (1) US4366462A (fr)
EP (1) EP0027647B1 (fr)
AT (1) ATE2916T1 (fr)
DE (1) DE2942478A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997005636A1 (fr) * 1995-08-01 1997-02-13 Inter Control Hermann Köhler Elektrik GmbH & Co. KG Coupe-circuit thermique

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2521770B1 (fr) * 1982-02-17 1986-10-17 Seb Sa Coupe-circuit thermique pour appareils a chauffage electrique
US4536641A (en) * 1984-01-26 1985-08-20 Black & Decker, Inc. Iron with overtemperature protection means
DE3711068A1 (de) * 1987-04-02 1988-10-20 Pscherer Fritz Nachf Gmbh Temperatursicherung fuer elektrische geraete
DE3843154C2 (de) * 1988-12-22 1995-07-20 Felten & Guilleaume Energie Auslöseeinrichtung für Schaltgeräte und Schaltanlagen im Mittelspannungsbereich
US5134413A (en) * 1988-12-27 1992-07-28 Georgia Tech Research Corporation Segmented cylindrical corner reflector
JPH084879A (ja) * 1994-06-17 1996-01-12 Zexel Corp 平行軸差動歯車装置
US5734312A (en) * 1995-06-26 1998-03-31 Black & Decker Inc. Overtemperature protection assembly for an appliance
ES2155788B1 (es) * 1999-06-09 2001-12-01 Bsh Krainel Sa Termofusible de proteccion perfeccionado.
DE10033354C1 (de) * 2000-07-08 2002-01-24 Tsb Thermostat Und Schaltgerae Thermisch gesteuerte, elektrische Schaltvorrichtung
DE10226357B4 (de) * 2002-06-13 2004-06-24 INTER CONTROL Hermann Köhler Elektrik GmbH & Co KG Thermische Sicherung
US7385796B2 (en) * 2002-09-17 2008-06-10 Saudi Arabian Oil Company Fire safety fusible link electrical terminal block
US7206505B2 (en) 2004-06-29 2007-04-17 S.C. Johnson & Son, Inc. Volatizer with integrated thermal cutoff
DE102005060965B4 (de) 2005-06-28 2007-08-16 Inter Control Hermann Köhler Elektrik GmbH & Co. KG Thermische Sicherung mit Verfahren zu ihrer Herstellung

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE294238C (fr) *
CH180001A (de) * 1935-03-25 1935-10-15 Sauter Ag Ubertemperatursicherung für elektrische Heisswasserspeicher.
FR1030509A (fr) * 1951-01-05 1953-06-15 Dispositif d'alarme fonctionnant en cas de menace d'incendie
DE1006053B (de) * 1952-10-09 1957-04-11 Christian Buerkert UEbertemperatursicherung
CH477754A (de) * 1967-09-07 1969-08-31 Richard Fonovits Kommanditgese Elektrische Übertemperatursicherung an einer auf Temperaturüberschreitung zu überwachenden Fläche
GB2004124A (en) * 1977-09-09 1979-03-21 Nifco Inc Thermal cut-off fuse
BE876991A (fr) * 1978-06-15 1979-12-14 Inter Control Koehler Hermann Coupe-circuit thermique a materiau fusible
GB2027665A (en) * 1978-08-04 1980-02-27 Gillenkinch G A Bag-filling Machine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1159602A (en) * 1914-06-17 1915-11-09 Joseph F Scheuer Thermal circuit-closer.
US2997562A (en) * 1960-05-25 1961-08-22 Jr William H Hathaway Thermal switch
DE2530970A1 (de) * 1975-07-11 1977-01-27 Inter Control Koehler Hermann Thermostat-kombination

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE294238C (fr) *
CH180001A (de) * 1935-03-25 1935-10-15 Sauter Ag Ubertemperatursicherung für elektrische Heisswasserspeicher.
FR1030509A (fr) * 1951-01-05 1953-06-15 Dispositif d'alarme fonctionnant en cas de menace d'incendie
DE1006053B (de) * 1952-10-09 1957-04-11 Christian Buerkert UEbertemperatursicherung
CH477754A (de) * 1967-09-07 1969-08-31 Richard Fonovits Kommanditgese Elektrische Übertemperatursicherung an einer auf Temperaturüberschreitung zu überwachenden Fläche
GB2004124A (en) * 1977-09-09 1979-03-21 Nifco Inc Thermal cut-off fuse
BE876991A (fr) * 1978-06-15 1979-12-14 Inter Control Koehler Hermann Coupe-circuit thermique a materiau fusible
DE2826205A1 (de) * 1978-06-15 1979-12-20 Inter Control Koehler Hermann Temperatursicherung mit schmelzmaterial
FR2428908A1 (fr) * 1978-06-15 1980-01-11 Inter Control Koehler Hermann Coupe-circuit thermique a materiau fusible
GB2027665A (en) * 1978-08-04 1980-02-27 Gillenkinch G A Bag-filling Machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997005636A1 (fr) * 1995-08-01 1997-02-13 Inter Control Hermann Köhler Elektrik GmbH & Co. KG Coupe-circuit thermique

Also Published As

Publication number Publication date
DE2942478A1 (de) 1981-04-30
DE2942478C2 (fr) 1990-03-29
ATE2916T1 (de) 1983-04-15
EP0027647B1 (fr) 1983-03-30
US4366462A (en) 1982-12-28

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