EP0696810A1 - ContrÔleur de température - Google Patents

ContrÔleur de température Download PDF

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Publication number
EP0696810A1
EP0696810A1 EP95107960A EP95107960A EP0696810A1 EP 0696810 A1 EP0696810 A1 EP 0696810A1 EP 95107960 A EP95107960 A EP 95107960A EP 95107960 A EP95107960 A EP 95107960A EP 0696810 A1 EP0696810 A1 EP 0696810A1
Authority
EP
European Patent Office
Prior art keywords
heating resistor
temperature monitor
switching mechanism
cover part
bimetallic
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
EP95107960A
Other languages
German (de)
English (en)
Other versions
EP0696810B1 (fr
Inventor
Marcel Hofsäss
Dieter Dr. Bühling
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.)
Thermik Geraetebau GmbH
Original Assignee
Thermik Geraetebau 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 Thermik Geraetebau GmbH filed Critical Thermik Geraetebau GmbH
Publication of EP0696810A1 publication Critical patent/EP0696810A1/fr
Application granted granted Critical
Publication of EP0696810B1 publication Critical patent/EP0696810B1/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
    • H01H1/00—Contacts
    • H01H1/50—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position
    • H01H1/504—Means for increasing contact pressure, preventing vibration of contacts, holding contacts together after engagement, or biasing contacts to the open position by thermal means
    • 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
    • H01H37/54—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting
    • H01H37/5427—Thermally-sensitive members actuated due to deflection of bimetallic element wherein the bimetallic element is inherently snap acting encapsulated in sealed miniaturised housing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/14—Electrothermal mechanisms
    • H01H71/16—Electrothermal mechanisms with bimetal element
    • H01H71/164—Heating elements

Definitions

  • the present invention relates to a temperature monitor, in particular for electrical consumers, such as, for example, electric motors and transformers, having a bimetallic switching mechanism which opens or closes at excess temperature in a housing comprising a cover part and a pot-like base part, a first heating resistor connected to the bimetallic switching mechanism, which acts when the switching mechanism is actuated in the sense of a self-holding function, and a second heating resistor connected to the bimetal switching mechanism, which acts in such a way that the bimetal switching mechanism at too high a current flow through the second heating resistor switches to protect the consumer from overcurrent.
  • electrical consumers such as, for example, electric motors and transformers
  • Such a temperature monitor is known from DE-OS-43 36 564.
  • the known temperature monitor comprises a bimetallic switching mechanism which opens in the event of overtemperature or overcurrent, to which the first heating resistor is connected in parallel and with which the second heating resistor is connected in series.
  • the known temperature monitor comprises a ceramic carrier plate provided with conductive and insulating coatings, on which an encapsulated bimetal switching mechanism is arranged, next to which a PTC thermistor module is connected, which is electrically connected in parallel with the bimetal switching mechanism and acts as a first heating resistor.
  • a thick-film resistor is also arranged on the ceramic carrier plate, which leads under the bimetal switchgear and is connected in series with it.
  • the task of the known temperature monitor is to interrupt the flow of current through the electrical consumer when this consumer is too high a temperature or when the current through the consumer is too high.
  • the known temperature monitor is connected in series to the consumer, so that the temperature monitor is traversed by the current flowing through the consumer, the bimetal switchgear being closed at temperatures below the response temperature and / or at currents below the response current.
  • the operating current of the consumer flows via the second heating resistor of a few ohms connected in series and via the closed contacts of the bimetallic switching mechanism that bridges the first heating resistor. If the temperature of the consumer now exceeds a predetermined limit value, the bimetallic switching mechanism that is in thermal contact with the consumer suddenly opens its contacts by a bimetallic snap disk snapping around inside the bimetallic switching mechanism. The current now flows through the heating resistor connected in series and via the second heating resistor, which has such a large resistance that the current is very much lower than the original operating current, so that the consumer is virtually switched off. As a result of the PTC thermistor characteristic of the second heating resistor, the current decreases further with the heating of this heating resistor.
  • the bimetallic snap disk Due to the heat radiation and / or conduction from this heating resistor, the bimetallic snap disk is further heated in such a way that it remains held in its position with the contacts open. In this way, it is prevented that when the consumer is switched off as a result of overtemperature, an automatic reclosure takes place, which could lead to so-called contact flutter with periodic switching on and off and is generally undesirable.
  • the series-connected heating resistor heats up to such an extent that the switching mechanism finally reaches and opens its response temperature. In this case, the self-holding takes place in the same way as already described above.
  • temperature monitor fulfills all the requirements in terms of function, it is disadvantageous that it has a relatively bulky and large construction, which can be attributed in particular to the ceramic carrier plate.
  • temperature monitors of this type are usually made very small, for example they have a diameter of 10 mm and a height of 5 mm, which places extreme demands on the manufacturing accuracy and at the same time the need for simple, yet functionally reliable constructions justified.
  • Such a miniature temperature monitor is known from EP-A-0 342 441 and from DE-OS-37 10 672.
  • This temperature monitor is designed to be self-retaining, but has no sensitivity to overcurrent.
  • the known temperature monitor comprises a heating resistor connected in parallel with the bimetallic switching mechanism, which acts in a similar way to that described above in connection with the first heating resistor.
  • a second heating resistor connected in series is not provided.
  • the high-impedance parallel resistor is integrated in the housing of the bimetal switchgear.
  • This housing comprises a pot-shaped lower part and an associated cover part, which can either consist of insulating material or of an electrically conductive resistance material.
  • a bimetallic snap disk and a spring washer are arranged in the housing part and carry a movable contact with which a fixed contact is associated, which is carried by the cover part.
  • the spring washer presses the movable contact against the fixed contact and at the same time serves to over forward the contacts flowing current to the bottom part, to which a first external contact is attached.
  • the second external contact of the known temperature monitor is arranged on the cover part and is in electrically conductive contact with the fixed contact of the bimetallic switching mechanism through the cover part.
  • the spring bimetallic snap disk acts on the spring washer, which snaps suddenly when a certain response temperature is exceeded and thereby lifts the movable contact from the fixed contact, so that the current flow through the bimetal switchgear is interrupted.
  • This heating resistor can either consist of the resistance material of the cover part or can be printed on the cover part if it consists of insulating material.
  • the known temperature monitor has the disadvantage that it does not offer overcurrent protection.
  • Another disadvantage is that in the embodiment where the cover part is made of electrically conductive resistance material, an insulating sleeve between the cover part and the bottom part is required in order to ensure a defined current path and thus a defined resistance. If, on the other hand, the heating resistor is formed by a printed resistance path, it is disadvantageous that this resistance path must be formed spirally and / or in arcs in order to achieve the desired resistance value and current profile.
  • the disadvantages relate to the high manufacturing costs in both cases.
  • From DE-OS-41 42 716 is a temperature monitor in a similar miniature version without locking by parallel switched heating resistor, but known for this with a series-connected heating resistor integrated in the smallest space, which ensures current monitoring.
  • the series resistor is arranged as an etched or stamped part or as a film printed with a resistor in the immediate vicinity and in thermal and electrical contact with the spring washer of the bimetallic switching mechanism in such a way that it comes to rest in the bottom part of the housing.
  • the etched or stamped parts used here as heating resistors cannot be manufactured too precisely with regard to the resistance value and only for a small resistance range.
  • bimetal circuit breakers in the form of pots which each have only one of the two protective functions mentioned above with respect to temperature and current.
  • DE-OS-36 32 256 discloses a temperature monitor which responds only to overcurrent and does not hold, in which a resistance wire coil which is freely tensioned in the vicinity of the bimetal element is provided as the heating resistor. Disadvantages here are the high space requirement, possible fluctuations in the position assignment to the bimetallic element and the associated fluctuations in the heat transfer, and contact problems at the connections of the resistance wire helix.
  • this object is achieved in that the first and the second heating resistor are integrated in the cover part.
  • the object underlying the invention is completely achieved in this way.
  • the inventor has found that by means of these design measures a compact temperature monitor can be created, which can only be produced inexpensively by replacing a new cover part, even during the production of known temperature monitors.
  • the integration of both heating resistors in the cover part offers the further advantage that the number of electrical contact points is reduced compared to the prior art, which results in a higher reliability of the temperature monitor.
  • the bimetallic switching mechanism comprises a fixed contact part held in the cover part as well as a movable contact part which is carried by a spring snap disc which can be moved by a bimetallic snap disk.
  • first heating resistor is connected in parallel with and the second heating resistor in series with the bimetallic switching mechanism that opens when the temperature rises.
  • the first heating resistor which effects the self-holding function would have to be connected in series to the bimetallic switching mechanism, while the second heating resistor which caused the temperature sensitivity would have to be arranged in parallel with the series circuit comprising the first heating resistor and the bimetallic switching mechanism.
  • the temperature of the consumer to be monitored and, for example, the current flow would be monitored by a control device, so that two monitoring functions could be achieved with a single temperature monitor.
  • the new temperature monitor opens as a result of an excess temperature in the consumer, the current is cut through the control unit is greatly reduced, which can be used to switch off the control unit.
  • an excessively high current through the control device which could damage the consumer, would also be monitored at the same time, because this excessively high current would result in the bimetallic switching mechanism closing via the second heating resistor connected in parallel, and thus the current now taking place through the parallel connected low-resistance heating resistor flows through the series connected high-resistance heating resistor.
  • the cover part is at least partially made of insulating material and the first and / or the second heating resistor and their connection connections are applied, preferably printed, in a layer arrangement on the insulating material.
  • the cover part is at least partially made of electrically conductive material, preferably of PTC thermistor material, which is provided as the first or second heating resistor.
  • the heating resistor connected in series is applied in layer form either to a deposited insulating layer or to a separate, previously produced film.
  • the film is placed on with the resistance layer and, together with the actual cover part, which can be made of insulating material or of PTC thermistor material, connected to the pot-like base part by flanging.
  • certain irregularities in the cover part and / or the flanging tool are compensated for in an advantageous manner by the film.
  • the electrically conductive material forms the first heating resistor and if an insulating layer is applied to it, to which the second heating resistor is applied, preferably printed, in a layer arrangement.
  • the second heating resistor is applied to the top of the cover part facing away from the base part and is connected with its one connection connection to the fixed contact part and with its other connection connection to a first external connection held on the cover part.
  • This embodiment has the advantage that several functions can be integrated in the new cover part in a manner that is simple in terms of production technology, which in principle also reduces the space requirement.
  • the heating resistor connected in series is on the side of the cover part facing away from the bimetallic snap disk, this design reduces the time until switching due to overtemperature by a certain preheating of the heating resistor connected in parallel, which contributes to a reliable response of the new temperature monitor.
  • the heating resistor (s) in the form of a layer has a structure which determines the resistance, with a resistance-determining segment preferably being left out laterally.
  • the advantage here is that the heating resistor is simply printed on as a continuous surface, the resistance being determined by a segment to be left free, which has manufacturing advantages over the arc-shaped or spiral arrangements of the prior art.
  • first and / or the second heating resistor are connected to the bimetallic switching mechanism via ring-shaped connection connections arranged on the cover part.
  • This measure has the advantage that ring-shaped, i.e. Centrally symmetrical structures can be applied evenly when printed on the conductor track, with the further advantage that when assembling the new temperature monitor it is not necessary to pay attention to a special angular alignment between the base part and the cover part.
  • the layer arrangements are covered by a preferably electrically insulating protective layer.
  • the advantage here is that the installation of the new temperature monitor can also be carried out by inexperienced, trained personnel, since the risk of incorrect installation with additional undesired contacting of the resistance layers is avoided.
  • FIG. 1 shows a schematic block diagram of a temperature monitor 10, which has a first external connection 11 and a second external connection 12, via which the temperature monitor 10 is connected in series with an electrical consumer, such as an electric motor or a transformer.
  • the temperature monitor 10 comprises a bimetallic switching mechanism 14 to which a first heating resistor 15 is connected in parallel.
  • a second heating resistor 16 is arranged in series with the parallel circuit consisting of the bimetal switching mechanism 14 and the first heating resistor 15, and as a rule has a significantly lower ohmic resistance than the first heating resistor 15.
  • the bimetal switching mechanism is in thermal contact with the one to be monitored electrical consumers.
  • the bimetallic switchgear 14 If the bimetallic switchgear 14 has a temperature below its response temperature, the first heating resistor 15 is short-circuited by the bimetallic switchgear 14, so that the operating current of the consumer only flows through the second heating resistor 16, which is also in thermal contact with the bimetallic switch. Derailleur 14 is. Now increases the temperature of the bimetallic switching mechanism, be it due to an increased temperature of the electrical consumer to be monitored or due to an excessive operating current through the second heating resistor 16 heats up accordingly, the bimetal switchgear 14 opens when it has exceeded its response temperature. This eliminates the short circuit across the first heating resistor 15, which is now flowed through in series with the second heating resistor 16 by the operating current.
  • the operating current is significantly reduced, which generally leads to the electrical consumer being switched off.
  • the operating current which is still flowing is sufficient to keep the bimetal switching mechanism 14 at a temperature above the response temperature by means of the ohmic heating of the first heating resistor 15.
  • the bimetallic switching mechanism 14 remains at the elevated temperature and is thus open, so that there is no undesirable contact flutter.
  • the bimetallic switching mechanism 14 has tripped as a result of overcurrent, that is to say if the second heating resistor 16 has been heated up to such an extent that the operating current has exceeded the response temperature due to the thermal contact with the bimetallic switching mechanism 14.
  • the new temperature monitor 10 comprises a housing 17 with a cup-shaped base part 18 and with a cover part 19 which closes the base part 18 and which rests on a circumferential shoulder 21 of the base part 18.
  • the housing 17 is closed by a flange 22 which presses the cover part 19 onto the circumferential shoulder 21.
  • the bimetallic switching mechanism 14 which is of conventional construction. It comprises a spring washer 24, which carries a movable contact part 25, over which a bimetallic snap disk 26 is placed.
  • the spring washer 24 is supported on a base 28 of the cup-shaped base part 18 and thus prestresses the movable contact part 25 against a fixed contact part 29 which extends like a rivet through the cover part 19 to the outside, where a head 30 is visible.
  • the bimetal switching mechanism 14 has a temperature below its response temperature, so that it is in the closed state. If the temperature of the bimetallic switching mechanism 14 is increased, the bimetallic snap disk 26 suddenly snaps from the convex shape shown into a concave shape and is supported on the underside of the cover part 19 in such a way that it moves the movable contact part 25 against the force of the Spring washer 24 lifts off the fixed contact part 29, as is generally known.
  • the cover part 19 is provided with two ring-shaped conductor or contact tracks 32, 33, which are realized by means of a printed and baked silver paste. While the contact track 32 rests on the shoulder 21 and ensures good electrical contact between the heating resistor 15 and the base part 18 made of electrically conductive material, the contact track 33 is located in the region of the fixed contact part 29 and ensures a corresponding electrically conductive connection between the heating resistor 15 and the contact part 29. Since the second External connection 12 is soldered to the flanged edge 22, because of the arrangement described, the heating resistor 15 is connected in parallel with the switching mechanism 14 and is bridged by the switching mechanism 14 when the latter is closed.
  • the cover part 19 On its upper side facing the outside, the cover part 19 carries an insulating layer 35, on which a resistance layer is applied in the mask printing process, which forms the heating resistor 16 with a resistance value of 0.1 to 10 ⁇ .
  • ring-shaped contact tracks 37, 38 are also printed from silver-containing paste, of which the contact track 37 ensures that the second heating resistor 16 is connected to the fixed contact part 29.
  • the outer contact track 38 connects to the first outer connection 11.
  • a protective layer 39 which provides mechanical and electrical protection.
  • the second heating resistor 16 is connected in series between the first external connection 11 and the fixed contact part 29, so that the arrangement according to FIG. 2 is integrated in an extremely compact manner and only into the cover part 19, the block diagram shown in FIG Temperature monitor with overcurrent and overtemperature protection and self-holding function implemented.
  • FIG. 3 shows the temperature monitor 10 from FIG. 2 in a top view, the protective layer 39 being omitted for reasons of clarity.
  • the second heating resistor 16 does not represent a purely annular layer, but is formed by a ring segment which leaves a cutout 41 free.
  • the heating resistor 16 can be understood as a parallel connection of many small elementary resistors between the ring-shaped conductor tracks 37 and 38, so that an enlargement or reduction of the cutout 41 leads to a reduction or enlargement of the resistance value of the heating resistor 16, which thus also easily in retrospect its resistance value can be adjusted. Since the heating resistor 16 points outwards, this can take place even with the temperature monitor 10 already installed.
  • the resistance value of the heating resistor 16 must be set so that the ohmic heat generated in it as the nominal operating current flows through it is sufficient to heat the bimetallic snap disk 26 beyond the response temperature.
  • the cover part 19 can also be made of an insulating material, wherein the first heating resistor 15 can also be formed as a sheet resistor, in this case on the inwardly facing surface of the cover part 19. This sheet resistance would extend between the contact tracks 32 and 33 exactly as the sheet resistor 16 extends between the contact tracks 37 and 38, so that the parallel connection of the first heating resistor 15 to the bimetallic switching mechanism 14 is maintained.

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Thermally Actuated Switches (AREA)
  • Glass Compositions (AREA)
  • Control Of Combustion (AREA)
  • Fire-Detection Mechanisms (AREA)
  • Valve Device For Special Equipments (AREA)
  • Inorganic Insulating Materials (AREA)
  • Control Of Temperature (AREA)
  • Control Of Resistance Heating (AREA)
EP95107960A 1994-08-10 1995-05-25 ContrÔleur de température Expired - Lifetime EP0696810B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4428226 1994-08-10
DE4428226A DE4428226C1 (de) 1994-08-10 1994-08-10 Temperaturwächter

Publications (2)

Publication Number Publication Date
EP0696810A1 true EP0696810A1 (fr) 1996-02-14
EP0696810B1 EP0696810B1 (fr) 1997-11-05

Family

ID=6525292

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95107960A Expired - Lifetime EP0696810B1 (fr) 1994-08-10 1995-05-25 ContrÔleur de température

Country Status (7)

Country Link
US (1) US5615072A (fr)
EP (1) EP0696810B1 (fr)
JP (1) JP3422346B2 (fr)
AT (1) ATE160050T1 (fr)
DE (2) DE4428226C1 (fr)
DK (1) DK0696810T3 (fr)
ES (1) ES2109032T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0741393A2 (fr) * 1995-05-03 1996-11-06 Thermik Gerätebau GmbH Module thermistance
DE102023104839B3 (de) 2023-02-28 2024-05-16 Marcel P. HOFSAESS Temperaturabhängiger Schalter

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19507105C1 (de) * 1995-03-01 1996-05-15 Hofsaes Geb Zeitz Ulrika Temperaturwächter
DE19604939C2 (de) * 1996-02-10 1999-12-09 Marcel Hofsaes Schalter mit einem temperaturabhängigen Schaltwerk
DE19704563B4 (de) * 1997-02-07 2005-07-21 Thermik Gerätebau GmbH Vorrichtung zum Schützen eines Gerätes
JP3874875B2 (ja) * 1997-02-24 2007-01-31 富士通株式会社 磁気ディスク装置
DE19727197C2 (de) * 1997-06-26 1999-10-21 Marcel Hofsaess Temperaturabhängiger Schalter mit Kontaktbrücke
DE19748589C2 (de) * 1997-11-04 1999-12-09 Marcel Hofsaes Schalter mit einem temperaturabhängigen Schaltwerk
DE19752581C2 (de) * 1997-11-27 1999-12-23 Marcel Hofsaes Schalter mit einem temperaturabhängigen Schaltwerk
JPH11273519A (ja) * 1998-03-25 1999-10-08 Hosiden Corp サーキットプロテクタとそれに用いる弾性熱応動板の製法
DE19816809C2 (de) * 1998-04-16 2001-10-18 Thermik Geraetebau Gmbh Temperaturabhängiger Schalter
DE19816807C2 (de) * 1998-04-16 2000-06-08 Thermik Geraetebau Gmbh Temperaturabhängiger Schalter
DE19827113C2 (de) 1998-06-18 2001-11-29 Marcel Hofsaes Temperaturabhängiger Schalter mit Stromübertragungsglied
US6542062B1 (en) 1999-06-11 2003-04-01 Tecumseh Products Company Overload protector with control element
US6707372B2 (en) * 2000-10-04 2004-03-16 Honeywell International, Inc. Thermal switch containing preflight test feature and fault location detection
DE10301803B4 (de) * 2003-01-20 2010-12-09 Hofsaess, Marcel P. Schalter mit einem temperaturabhängigen Schaltwerk
US20050122201A1 (en) * 2003-08-22 2005-06-09 Honeywell International, Inc. Thermal switch containing preflight test feature and fault location detection
WO2005036579A1 (fr) * 2003-10-08 2005-04-21 Yamada Electric Mfg. Co., Ltd. Dispositif pourvu d'un relais
US7102481B2 (en) * 2003-12-03 2006-09-05 Sensata Technologies, Inc. Low current electric motor protector
US7326887B1 (en) 2006-12-13 2008-02-05 Sensata Technologies, Inc. Modified reset motor protector
US7800477B1 (en) * 2007-03-20 2010-09-21 Thermtrol Corporation Thermal protector
IT1392191B1 (it) * 2008-12-12 2012-02-22 Electrica Srl Protettore termico per motori elettrici, in particolare per motori eletrici per compressori
EP2282320A1 (fr) * 2009-08-01 2011-02-09 Limitor GmbH Disque bimétallique embouti
EP2506281B1 (fr) * 2011-03-29 2015-10-07 Marcel P. Hofsaess Commutateur thermodépendant avec résistance protectrice
DE102011107110B4 (de) 2011-07-12 2013-04-18 Marcel P. HOFSAESS Verfahren zum Umgeben eines elektrischen Bauteils mit einem Schutzgehäuse sowie elektrisches Bauteil mit einem Schutzgehäuse
US20130021132A1 (en) * 2011-07-21 2013-01-24 Honeywell International Inc. Permanent one-shot thermostat
DE102012112207B3 (de) * 2012-12-13 2014-02-13 Marcel P. HOFSAESS Temperaturabhängiger Schalter
JP6157856B2 (ja) * 2013-01-10 2017-07-05 カルソニックカンセイ株式会社 熱感知装置
DE202013012037U1 (de) * 2013-02-13 2015-02-10 Thermik Gerätebau GmbH Temperaturabhängiger Schalter
DE102013101393B4 (de) * 2013-02-13 2014-10-09 Thermik Gerätebau GmbH Temperaturabhängiger Schalter
DE102013108508A1 (de) 2013-08-07 2015-02-12 Thermik Gerätebau GmbH Temperaturabhängiger Schalter
DE102013108504C5 (de) 2013-08-07 2018-11-15 Thermik Gerätebau GmbH Temperaturabhängiger Schalter
DE102013022331B4 (de) 2013-08-07 2020-10-29 Thermik Gerätebau GmbH Temperaturabhängiger Schalter
DE102014108518A1 (de) * 2014-06-17 2015-12-17 Thermik Gerätebau GmbH Temperaturabhängiger Schalter mit Distanzring
DE102014116888B4 (de) * 2014-11-18 2018-05-17 Thermik Gerätebau GmbH Temperaturabhängiger Schalter
DE102015114248B4 (de) 2015-08-27 2019-01-17 Marcel P. HOFSAESS Temperaturabhängiger Schalter mit Schneidgrat

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EP0284916A2 (fr) * 1987-03-31 1988-10-05 Ulrika Hofsäss Thermostat avec un boîtier
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EP0453596A1 (fr) * 1990-04-25 1991-10-30 Ulrika Hofsäss Commutateur à température
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Publication number Priority date Publication date Assignee Title
DE8411838U1 (de) * 1984-04-14 1984-07-26 Limitor GmbH, 7530 Pforzheim Bimetallschutzschalter
EP0284916A2 (fr) * 1987-03-31 1988-10-05 Ulrika Hofsäss Thermostat avec un boîtier
DE3710672A1 (de) * 1987-03-31 1988-10-13 Hofsass P Temperaturwaechter mit einem gehaeuse
FR2613870A1 (fr) * 1987-04-10 1988-10-14 Degois Cie Ets Thermostat perfectionne notamment pour couverture chauffante
EP0453596A1 (fr) * 1990-04-25 1991-10-30 Ulrika Hofsäss Commutateur à température
DE4142716A1 (de) * 1991-12-21 1993-06-24 Microtherm Gmbh Thermoschalter
DE4336564A1 (de) * 1992-11-03 1994-05-05 Thermik Geraetebau Gmbh Temperaturwächter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0741393A2 (fr) * 1995-05-03 1996-11-06 Thermik Gerätebau GmbH Module thermistance
EP0741393A3 (fr) * 1995-05-03 1997-08-13 Thermik Geraetebau Gmbh Module thermistance
DE102023104839B3 (de) 2023-02-28 2024-05-16 Marcel P. HOFSAESS Temperaturabhängiger Schalter

Also Published As

Publication number Publication date
ATE160050T1 (de) 1997-11-15
JPH08171841A (ja) 1996-07-02
US5615072A (en) 1997-03-25
EP0696810B1 (fr) 1997-11-05
ES2109032T3 (es) 1998-01-01
JP3422346B2 (ja) 2003-06-30
DE4428226C1 (de) 1995-10-12
DK0696810T3 (da) 1998-01-05
DE59500942D1 (de) 1997-12-11

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