EP2591488B1 - Régulateur bilame - Google Patents

Régulateur bilame Download PDF

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Publication number
EP2591488B1
EP2591488B1 EP11728843.1A EP11728843A EP2591488B1 EP 2591488 B1 EP2591488 B1 EP 2591488B1 EP 11728843 A EP11728843 A EP 11728843A EP 2591488 B1 EP2591488 B1 EP 2591488B1
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EP
European Patent Office
Prior art keywords
bimetal
bimetallic
arcuate
switching
clamping
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.)
Active
Application number
EP11728843.1A
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German (de)
English (en)
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EP2591488A1 (fr
Inventor
Elmar Mangold
Andreas J. Beckmann
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.)
Stego Holding GmbH
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Stego Holding 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
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Priority to PL11728843T priority Critical patent/PL2591488T3/pl
Publication of EP2591488A1 publication Critical patent/EP2591488A1/fr
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Publication of EP2591488B1 publication Critical patent/EP2591488B1/fr
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    • 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
    • H01H37/521—Thermally-sensitive members actuated due to deflection of bimetallic element comprising a plurality of bimetals acting in the same direction
    • 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
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/12—Means for adjustment of "on" or "off" operating temperature

Definitions

  • the invention relates to a bimetallic regulator with a switching device and at least one bimetal device, which is so in operative connection with the switching device or can be brought that it allows a temperature-dependent switching of the switching device.
  • the document DE361876 discloses, for example, a bimetallic regulator according to the preamble of claim 1, but in particular a bimetallic switch, with a switching device and at least one bimetal device, which is in operative connection with the switching device or can be brought so that it allows a temperature-dependent switching of the switching device, wherein the bimetal device at least one The first bimetallic element and at least one arcuate second bimetallic element connected to each other at a contact area connected and formed at the contact area such that the coefficient of thermal expansion of the first bimetallic element from its first side, eg its underside, to its first side opposite the second side, for Top, decreases and the coefficient of thermal expansion of the arcuate second bimetallic element of its first side facing away from the first side of the first bimetallic element, z.
  • the second bimetallic element is formed as a semicircular arc and arranged to actuate the switching device that add deflections of the bimetallic elements.
  • a bimetal or thermobimetal is a metal element made of two layers of different materials, which are connected to each other cohesively or positively. Characteristic is the change of shape with temperature change. The change in shape manifests itself as bending of the bimetal. The cause is the different thermal expansion coefficient of the metals used. If one metal expands more strongly than the associated other metal, the metal layer combination will bend.
  • the two metals are usually joined together by rolling and in particular cold welding, or else by mechanical connection means, such as rivets.
  • bimetals are temperature-dependent switches, the bimetals are used here so that they actuate a switching device with temperature changes and the associated bending.
  • Such a bimetal or switch shows, for example, the DE 894 469 in which a bimetal is struck with one end on a basic construction and with a free end in operative connection with a switching device.
  • This switching device consists of two switching elements which are adjustable relative to one another via a stop plate. In a deformation of the bimetallic it comes to the contact closure of the two switching elements, ie to a switching operation on the then an associated electrical device etc. can be controlled.
  • a similar bimetallic regulator shows the DE 889 782 in which also a bimetal is struck with one end on a basic construction and with another free end in operative connection with a switching device. Again, the initiated by the bending of the bimetallic element at the free end switching operation via a suitable adjustment is adjustable.
  • the bimetallic regulators known from the prior art are usually not exactly adjustable with regard to the switching temperature. This can be observed especially with very small bimetallic regulators.
  • the object of the invention is therefore to offer a bimetallic according to the type mentioned above, which guarantees a precisely adjustable switching behavior and / or a small hysteresis, especially with a small size.
  • this object is achieved inter alia by a bimetallic, with a switching device and at least one bimetal device, which is in operative connection with the switching device or can be brought that it allows a temperature-dependent switching of the switching device, wherein the bimetallic device at least a first bimetallic element and at least one arcuate second bimetallic element, which are connected to each other at a contact portion and formed at the contact portion such that the coefficient of thermal expansion of the first bimetallic element decreases from the underside to the top and the coefficient of thermal expansion of the arcuate second bimetallic element increases from its underside to the top, or vice versa.
  • At least the first bimetallic element and at least the arcuate second bimetallic element are composed of at least two element layers each having at least one of them Constructed thermal expansion coefficient, wherein with respect to the thermal expansion coefficient of the layer structure of the first bimetallic element at the contact region opposite to the layer structure of the arcuate second bimetallic element extends.
  • the bimetallic device of the bimetal according to the invention consists of at least two bimetallic elements, namely at least a first bimetallic element and at least a second arcuate bimetallic element, both bimetallic elements are multilayer elements and wherein the layer elements of each bimetallic element used have such different thermal expansion coefficients that the respective bimetal element deformed as a function of the ambient temperature.
  • the two bimetallic elements are connected to one another at a contact region in such a way that the layer structure of the first bimetallic element is opposite to the layer structure of the arcuate second bimetal element with respect to the thermal expansion coefficients.
  • this "opposite arrangement" of the layer structure is understood to mean an arrangement in which, with regard to the thermal expansion coefficients, the layer structure of the first bimetallic element, viewed from the layer with the lower coefficient of thermal expansion to the layer with the higher coefficient of thermal expansion, opposite to the layer structure the second arcuate bimetallic element extends.
  • bimetal devices are thus also included in the scope of the invention, in which the first bimetallic element has, inter alia, a different layer structure with respect to the number of layers or the materials and material thicknesses used than the second bimetallic element, as long as especially in the contact area an "opposite layer structure" is provided.
  • any kind of deviation from a straight line or a main extension axis of the bimetal understood, and in particular a shape, in particular a circular arc shape, in which a portion of the bimetallic element in at least 90 ° offset direction to another portion of the first and / or the second bimetallic element extends.
  • the result is a bimetallic regulator in which even at low temperature changes large movements occur at the bimetal device, so u.a. Switching operations can be carried out even at low temperature changes.
  • the resulting bimetallic regulator is thus much more sensitive compared to prior art regulators.
  • the bimetal device comprises a plurality of series-connected combinations of first bimetallic elements and arcuate second bimetallic elements.
  • the bimetal device is preferably designed so that the arrangement of first bimetallic elements and arcuate second bimetallic elements alternates, whereby in each case again the inventive opposite arrangement of the layer structures of the respective bimetal elements is to be considered. It is also possible to form the bimetallic device in such a way that a combination of the first bimetal element and the arcuate second bimetallic element is connected via a further intermediate element and preferably a non-bimetallic intermediate element to a further combination of a first bimetallic element and arcuate second bimetallic element.
  • bimetal device meandering through a corresponding arrangement of first and second bimetallic elements, in particular so as to compensate for movements substantially perpendicular to the main movement direction (ie the direction of movement which executes a switching operation).
  • intermediate elements and preferably also to arrange non-bimetallic intermediate elements between at least one first bimetal element and an arcuate second bimetallic element.
  • the first bimetallic element and / or the arcuate second bimetallic element are formed as a bimetallic strip.
  • the design with bimetallic strip guarantees a switching movement of the bimetal device in a defined direction of movement.
  • the contact region is arranged at the one distal end of the first bimetallic element and a proximal end of the arcuate second bimetallic element.
  • the arcuate second bimetallic element describes a half-arc to almost a solid sheet and in particular a three-quarter arc, according to the invention, however, a semicircular arc to almost a full arc and in particular a three-quarter arc.
  • the element movements of the first bimetallic element and the arcuate second bimetallic element add particularly effectively to a common switching movement with temperature change, wherein the bimetal device receives a very compact structure at the same time.
  • the main axis of extension of the switching region and the adjacent tangent of the arcuate second bimetallic element includes an angle of ⁇ 180 degrees, in particular an angle of ⁇ 90 degrees. In this way, you get a very compact component, coupled with a very effective combination of individual bimetallic movements with temperature changes.
  • the switching range of the arcuate second bimetallic element is arranged at a defined normal temperature T 0 axis parallel to the main extension axis of the first bimetallic element.
  • T 0 axis parallel to the main extension axis of the first bimetallic element.
  • the bimetallic device is mounted with a proximal end of the first bimetallic element substantially clamped relative to the switching device. Starting from this clamping point, results in a bimetal with a very large switching path, which can also be arranged in a confined space.
  • the element layer having the higher coefficient of thermal expansion is arranged in the region of the inner arc.
  • a bimetal device is obtained, which expands very strongly when the temperature increases and acts on a switching device arranged in the outer environment of the bimetal device.
  • the element layer with the higher coefficient of thermal expansion in the region of the outer arc of the second bimetallic element is arranged.
  • the present invention also relates to a bimetallic regulator with a device for electrically conductive connection of at least one line element to the aforementioned bimetal or to a housing mounted in a contact element of a similar switching device, wherein a clamping device is provided, comprising: a clamping bolt and a clamping bolt receptacle which together define a terminal space into which the conduit member from the outside of the housing is inserted and into which the contact element protrudes from the inside of the housing, wherein the clamping bolt is held in the housing in its axial direction and with a clamping extension restraining against the contact element and wherein an abutment portion of the clamping bolt receptacle such while reducing the clamping space on the clamping extension and the contact element fitting thereto zubewegbar and at least in a clamping position can be fixed, that the conduit element and the contact element are fixed to each other electrically conductive, without a bending load is entered into the contact element.
  • Fig. 1 shows an isometric view of an embodiment of the bimetallic controller according to the invention
  • Fig. 2 a side view of this embodiment
  • Fig. 3 a detailed view of a bimetallic device 4, as used in this bimetal 1.
  • the bimetallic device 4 has two bimetal elements 6, 8, namely a first bimetallic element 6 and an arcuate second bimetallic element 8.
  • the arcuate second bimetallic element here is at least partially in the form of a 3 ⁇ 4 circle.
  • These two bimetallic elements 6, 8 are connected to one another at a contact region 14, in particular here the first bimetallic element 6 is arranged with its distal end 7 at the proximal end 9 of the arcuate second bimetallic element 8.
  • the bimetal device 4 is connected via a switching element 3 with a switching device 2 in operative connection, which establishes an electrical connection between two contact elements 16, 18, thus enabling a switching operation.
  • An adjusting element 20 can be used to adjust this switching process by positioning two contact elements 17, 19 assigned to the contact elements 16, 18 relative to one another. Depending on how this positioning takes place, the switching device 2 triggers the switching operation in the case of small or larger movements of the bimetal device 4.
  • the bimetallic device 4 is clamped substantially rigidly with a proximal end 5 of the first bimetallic element 6 on a bearing block 22.
  • This bearing block which consists of a plurality of insulating individual elements 23, carries in addition to the bimetal 4 and the contact elements 16 and 18 and a support plate 24, a fastening of the bimetallic regulator 1 in a housing 40 (see Fig. 7 ) and, moreover, carries the adjusting element 20.
  • the arcuate second bimetallic element 8 has at its distal end 11 via a switching region 13, via which it is in operative connection with the switching device 2 with the switching element 3. With a change in temperature, the shift range 13 moves due to the resulting movement of the two bimetallic elements 6, 8 to the switching device 2, wherein the switching element 3 triggers the switching process at a certain movement.
  • the structure of the switching device 2 can be seen in detail. It comprises the two contact elements 16 and 18, which can be brought into electrical conduction with one another via associated contact elements 17 and 19 by activation via the switching element 3.
  • the contact element 17 is designed here as a spring element and in particular as a beryllium spring element, so that the electrical conduction opens again in a "retraction" of the switching element 3.
  • the first bimetallic element 6 consists of two element layers 10, 12, wherein the element layer 10 with the larger coefficient of thermal expansion ⁇ .DELTA.T10 is arranged on the underside 21 shown in the drawing plane and the element layer 12 with the lower coefficient of thermal expansion .DELTA.T12 on the upper side 23.
  • This bimetal element 8 consists of two element layers 10, 12, wherein in the contact region 14, the element layer 10 with the higher coefficient of thermal expansion ⁇ .DELTA.T10 is arranged on the top 23 shown in the drawing plane and the element layer 12 with the lower coefficient of thermal expansion .DELTA.T12 on the bottom 21.
  • Fig. 3 is the movement of the bimetallic device 4 and the two bimetallic 6, 8 shown schematically at a certain temperature change .DELTA.T, wherein the end position of the bimetallic device 4 is shown in broken lines at a temperature change .DELTA.T.
  • Fig. 4 shows a further embodiment of the bimetal 4, in which case a plurality of first bimetallic elements 6 and arcuate second bimetallic elements 8 are arranged in series and here in particular meandering.
  • the in Fig. 3 illustrated switching path 26 at a temperature change .DELTA.T increase almost arbitrarily, with unwanted movements, here, for example, in Fig. 3 shown right drift of the switching range 13, correct.
  • bimetal 6, 8 each have a layer structure, consisting of at least two element layers 10, 12, as he already with reference to Fig. 3 was explained in detail.
  • Fig. 5 to 7 is the previously discussed embodiment according to the Fig. 1 to 3 again in isometric view ( Fig. 5 ) and in a longitudinal section ( Fig. 6 ).
  • the embodiment of the bimetallic regulator 1 has been supplemented here by clamping devices 28 and in particular by two paternoster terminals 30, which allow the simple connection of a line element (not shown) to the bimetallic regulator 1.
  • the contact elements 16, 18 mostly via a solder joint with further conductive elements (not shown), so here is the connection of the bimetallic regulator 1 and the contact elements 16, 18 on the paternoster terminals 30.
  • connection technique is that no heat energy is introduced by a soldering or welding process into the contact elements 16 and 18 and via these into the switching contacts 17, 19 and in particular the switching contact 17 designed here as Berrylium spring. Especially this heat input has led to deformations in the prior art and to a decrease in the restoring force of the running as a spring element switching contact 17. This artificial aging, which has essentially met a thermal aftertreatment, often led to a malfunction of the bimetal 1.
  • the clamping bolt receptacle 34 is formed as a clamping bolt shoe which at least partially encloses the clamping space 36, wherein at its inner, the clamping extension 33 facing the bottom wall, the counter bearing portion 35 is formed.
  • the clamping bolt receptacle 34 is preferably mounted in the axial direction of the clamping bolt 32 movable on the clamping bolt.
  • the clamping bolt 32 is preferably provided with a threaded portion which threadingly engages with a threaded receiving portion of the clamping bolt receptacle 34 is that the abutment portion 35 of the clamping bolt receptacle 34 by a rotation of the clamping bolt 32 on the clamping bolt extension 33 and the contact element 16, 18 adjacent thereto to and from this is movable.
  • the clamping bolt receptacle 34 is preferably formed from a multi-folded metal strip 42. This allows an inexpensive production with good stability and sufficient material for the formation of a threaded receiving area.
  • the clamping bolt receptacle 34 preferably has at its lower bottom region a cover element 44, which serves as a guide for connecting a line element.
  • the cover member 44 preferably extends axially parallel to the clamping bolt 32 so that it successively covers a receiving opening 48 in the housing 40 with a reduction of the clamping space 36, so here by a rotation of the clamping bolt 32. This prevents the erroneous insertion of the conduit element.

Claims (8)

  1. Régulateur bilame, avec un dispositif de commutation (2) et au moins un dispositif bilame (4), qui est ou peut être mis en liaison active avec le dispositif de commutation (2), de telle manière qu'il permette une commutation du dispositif de commutation (2) en fonction de la température,
    dans lequel le dispositif bilame (4) présente au moins un premier élément bilame (6) et au moins un deuxième élément bilame en forme d'arc (8), qui sont reliés l'un à l'autre dans une zone de contact (14) et qui sont configurés dans la zone de contact de telle manière que le coefficient de dilatation thermique du premier élément bilame (6) diminue de son premier côté, par exemple son côté inférieur (21), à son deuxième côté opposé au premier côté, par exemple à son côté supérieur (23), et que le coefficient de dilatation thermique du deuxième élément bilame en forme d'arc (8) augmente de son premier côté détourné du premier côté du premier élément bilame (6), par exemple de son côté inférieur (21'), à son deuxième côté opposé au premier côté du deuxième élément bilame (8), par exemple à son côté supérieur (23'), ou le coefficient de dilatation thermique des deux éléments bilames (6, 8) évolue de façon inverse, et le deuxième élément bilame (8) est de forme semi-circulaire ou entièrement circulaire et est disposé, pour l'actionnement du dispositif de commutation (2), de telle manière que les déplacements des éléments bilames (6, 8) s'additionnent,
    caractérisé en ce que la zone de contact (14) est disposée à une extrémité distale (7) du premier élément bilame (6) et à une extrémité proximale (9) du deuxième élément bilame en forme d'arc (8).
  2. Régulateur bilame selon la revendication 1, caractérisé en ce que les éléments bilames (6, 8) sont constitués d'au moins chaque fois deux couches d'élément (10, 12) avec des coefficients de dilatation thermique différents (αΔT10, αΔT12), dans lequel, par rapport aux coefficients de dilatation thermique (αΔT10, αΔT12), la structure stratifiée du premier élément bilame (6) évolue dans la zone de contact (10) à l'opposé de la structure stratifiée du deuxième élément bilame en forme d'arc (8).
  3. Régulateur bilame selon la revendication 1 ou 2, caractérisé en ce que le premier élément bilame (6) et/ou le deuxième élément bilame en forme d'arc (8) sont réalisés sous forme de bandes bimétalliques.
  4. Régulateur bilame selon l'une quelconque des revendications précédentes, caractérisé en ce que le deuxième élément bilame en forme d'arc (8) présente à son extrémité distale (11) une zone de commutation (13) de forme essentiellement linéaire, qui est ou peut être mise en liaison active avec le dispositif de commutation (2).
  5. Régulateur bilame selon la revendication 4, caractérisé en ce que l'axe d'extension principal de la zone de commutation (13) et la tangente voisine de celle-ci du deuxième élément bilame en forme d'arc (8) forment un angle de < 180°, en particulier un angle ≤ 90°.
  6. Régulateur bilame selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif bilame (4) est monté avec une extrémité proximale (5) du premier élément bilame (6) essentiellement encastrée par rapport au dispositif de commutation (2).
  7. Régulateur bilame selon l'une quelconque des revendications précédentes, caractérisé en ce que dispositif bilame (4) présente une multiplicité de combinaisons de premiers éléments bilames (6) et de deuxièmes éléments bilames en forme d'arc (8), connectées en série et disposées en particulier de façon sinueuse.
  8. Régulateur bilame selon l'une quelconque des revendications précédentes, dans lequel le régulateur bilame (1) est ou peut être monté dans un boîtier (40) avec un dispositif, caractérisé en ce que ce dispositif est prévu pour le raccordement électriquement conducteur d'au moins un élément de ligne au dispositif de commutation (2), avec un dispositif de serrage (28), qui présente les éléments suivants:
    une borne à tige (32) et un logement de borne à tige (34), qui définissent ensemble un espace de borne (36), dans lequel l'élément de ligne peut être introduit par le côté extérieur du boîtier (43) et dans lequel l'élément de contact (16; 18) pénètre par le côté intérieur du boîtier (45), dans lequel la borne à tige (32) est maintenue dans le boîtier (40) dans sa direction axiale et s'applique librement sur l'élément de contact (16; 18) avec un prolongement de borne (33) et dans lequel une zone de contre-appui (35) du logement de borne à tige (34) peut être déplacée, avec réduction de l'espace de borne (36), contre le prolongement de borne (33) et l'élément de contact (16; 18) appliqué sur celui-ci et peut être fixée au moins dans une position de serrage, de telle manière que l'élément de ligne et l'élément de contact (16; 18) soient fixés l'un à l'autre de façon électriquement conductrice, sans qu'une contrainte de flexion soit introduite dans l'élément de contact (16; 18).
EP11728843.1A 2010-07-05 2011-07-01 Régulateur bilame Active EP2591488B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL11728843T PL2591488T3 (pl) 2010-07-05 2011-07-01 Regulator bimetalowy

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010017741A DE102010017741B4 (de) 2010-07-05 2010-07-05 Bimetallschalter
PCT/EP2011/061087 WO2012004197A1 (fr) 2010-07-05 2011-07-01 Régulateur bilame

Publications (2)

Publication Number Publication Date
EP2591488A1 EP2591488A1 (fr) 2013-05-15
EP2591488B1 true EP2591488B1 (fr) 2017-04-05

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EP11728843.1A Active EP2591488B1 (fr) 2010-07-05 2011-07-01 Régulateur bilame

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US (1) US10332706B2 (fr)
EP (1) EP2591488B1 (fr)
JP (1) JP2013533592A (fr)
KR (1) KR20130137120A (fr)
CN (1) CN102959671B (fr)
BR (1) BR112013000015B1 (fr)
CO (1) CO6660495A2 (fr)
DE (1) DE102010017741B4 (fr)
EA (1) EA023533B1 (fr)
ES (1) ES2628593T3 (fr)
MX (1) MX2012015033A (fr)
PL (1) PL2591488T3 (fr)
WO (1) WO2012004197A1 (fr)

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CN103065867A (zh) * 2012-12-25 2013-04-24 戎征雷 一种恒温温控器
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CN108321014B (zh) * 2018-02-07 2024-03-08 佛山市顺德区汇控电器制造有限公司 一种双保险的防复位温控器

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Publication number Publication date
US20130106566A1 (en) 2013-05-02
BR112013000015A2 (pt) 2016-05-24
PL2591488T3 (pl) 2017-11-30
DE102010017741A1 (de) 2012-01-05
KR20130137120A (ko) 2013-12-16
JP2013533592A (ja) 2013-08-22
EA201201672A1 (ru) 2013-06-28
MX2012015033A (es) 2013-08-27
CO6660495A2 (es) 2013-04-30
DE102010017741B4 (de) 2012-05-16
WO2012004197A1 (fr) 2012-01-12
ES2628593T3 (es) 2017-08-03
US10332706B2 (en) 2019-06-25
EA023533B1 (ru) 2016-06-30
CN102959671B (zh) 2016-03-30
BR112013000015B1 (pt) 2020-10-27
EP2591488A1 (fr) 2013-05-15
CN102959671A (zh) 2013-03-06

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