Magnetothermal actuator
A magnetic actuator and thermal actuator technology, which is applied to the parts, electrical components, and operation/release mechanism of the protection switch, etc., can solve the problems of hindering product reset, high temperature hysteresis of the coil, etc., to avoid uselessness. The effect of heating and avoiding heat diffusion
Active Publication Date: 2017-09-01
HAGER ELECTRO LTD
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Problems solved by technology
[0009] Disadvantages of this type of construction are: high temperature hysteresis of the coil
[0010] In the same way, the coil needs time to cool down, and the deformable member thus needs time to cool down and return to its compressed position, thus preventing the product from resetting in a timely manner.
Method used
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Embodiment Construction
[0038] exist figure 1 with 2 Among them, the magnetic actuator consists of a coil 5 , a movable magnetic core 4 , a fixed magnetic core 1 and a first return device including a spring 3 . The striker 2 , which will be called “second striker” in conformity with the first part of the description and driven by the moving magnetic core 4 , makes it possible to act, if necessary, on the trigger of the mechanical lock. The function of the magnetic actuator is conventional: in the event of a significant rise in current, for example due to a short circuit, the magnetic field generated by the coil 5 causes the mobile core 4 to move against the spring 3 , thereby driving the striker 2 . Said moving core 4 moves in the direction of the fixed core 1 , which further acts as a stop during the translational movement of the moving core 4 . The case 6a around which the coil 5 is wound surrounds and guides the movable magnetic core 4, which slides in the case 6a.
[0039] The thermal actuator...
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A magnetocaloric actuator comprising: a magnetic actuator consisting of a coil (5) placed in series in a power line surrounding a fixed magnetic core (1) and a movable magnetic core (4 ) and drives the movable magnetic core (4) between two positions respectively representing the two states of the non-actuated state and the actuated state of the actuator, said movable magnetic core (4) being capable of resetting by means of the first (3) is returned to a position corresponding to the non-actuated state of the actuator; a thermal actuator comprising a deformable member (10) made of a thermally sensitive material, the thermally sensitive material capable of changing from an initial shape to a final shape under the action of heat generated around the thermally sensitive material, the initial shape and the final shape representing the two states of the actuator, respectively a non-actuated state and an actuated state; said The magnetic actuator and said thermal actuator are collinear along the axis of rotation (X). The magnetocaloric actuator is characterized in that the thermal actuator comprises a heating element (11) made of heat transfer material placed in series with the coil (5), the heating element (11 ) thermally cooperates with said deformable member (10) and is capable of generating heat around the deformable member (10).
Description
technical field [0001] The present disclosure relates generally to a magnetothermal actuator, and more particularly to an electrical device of the notable circuit breaker type, arranged to open at least one power line in the event of a fault Whereas protection is guaranteed, the fault leads to a rise in the current or to a faster current, for example further to a short circuit, or to a slower current in the event of an excessive load in the circuit. The invention also relates to an electrical device equipped with such a magnetocaloric actuator. Background technique [0002] In the case of a fault phenomenon as described above, the opening of the line results from the presence in such a device of fixed and moving contacts capable of being separated from each other, under the assumption that they can be separated from each other, by means of mechanical This is accomplished by triggering the action of a magnetothermal actuator on the lock. These two contacts are arranged betw...
Claims
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IPC IPC(8): H01H71/40H01H71/16
CPCH01H71/161H01H71/40
Inventor 吉拉姆·拉科姆多米尼克·沃纳
Owner HAGER ELECTRO LTD