DE1588507A1 - Combined bimetal and magnetic release - Google Patents

Description

Licentia Patent ■ administration s-GmbH

6 Frankfurt / Main, Theodor-Stern-Kai 1

Frankfurt / Main, 6th, Des. 1967

Combined bimetal and magnetic release

The invention relates to a combined bimetal and lUgnetaualöner (quick release), for example , for motor protection switches.

while a rapid release has the task of causing the rapid opening of the protective circuit at high currents through the bimetallic release dir or rmine; causes a su protective circuit far below the animal Anoprechstromstärko SchnellauslSsere

BimetalifliinlHeor, κ. B, in Uotorsnhutzsoh'Utern,

with the üohuti of motors with inlchten start-up BAO ORiQiNAL

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for the degree of inertia T I, for motors with heavier ones Start-up conditions designed for degree of inertia T II (YDE 0660, § 34-, Table 10) Bimetallic hot power to be applied and therefore, since such bimetallic switches are on the one hand quick, on the other hand should work slowly, different technical designs.

The object of the invention is to create a small and simple combined bimetal and magnetic release which the bimetal release part can be used for both inertia level X and inertia level H.

baa is achieved according to the invention in that one or more bimetal strips are indirectly heated on the one hand by a heating coil carried by the bimetal strip and on the other hand by an excitation winding for the magnetic release, and that the bimetal strip (s) is in thermally conductive contact with the magnetic iron of the netauelösers stands (stand).

In the newspaper is an embodiment of the inventor application shown schematically. In there

i / ig. 1 & * n new trigger in Ana loht, '

BAD Flg. 2 the section estlang IlB from flg. 1,

FLg. 5 Ln the plan hole along OD of Fig. 2, 1 9810/0431

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Pig. 4 the interaction of the magnetic armature, the

Magnetic release and the bimetal strip alt a release slide in the view and in the plan view again.

In Fig. 1, old 1 denotes a bimetal strip, the is indirectly heated by the heating coil 2. 3 is the magnetic iron of the liagnetäuslSer * 4 is the armature of the magnetic release and with 5 let the excitation winding for the Magnetauölöser called. Bas magnet iron is like that Aue Fig. 2 and 3 is U-shaped and is from the in Fig «3 includes the excitation winding indicated by dotted lines. At. the transverse handle of the magnetic iron is the bimetallic strip 1, z. B. by spot welding attached. He can Innerhall} the rare leg of the U-shaped magnetic iron and der'Erregerspule 5 bend freely. The anchor 4- des Magnetauslösera 1st on a shoulder 3.1, s. B. in cutting, stored. For his part, he carries an approach 4.1, which, Flg. 4, protrudes into a cutout 6 of the release slide 7. The transverse leg of the magnetic iron 3 goes into an approach 3 * 2 above, which has an opening 3.3. The approach 4.1 The anchor 4 passes through this opening. By the length of the Opening 3 »3 limits the movement of the armature. When the magnet armature 4 is attracted, a small air gap remains between the armature and the pole surfaces of the magnet iron 3. To avoid the clog of the magnet armature 1

BATHROOM 0RK3INÄL

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this is provided with a non-magnetic Umhülluna 4.2, or the cutout 3 * 3 of the extension 3 * 2 is provided with non-magnetic supports on its stop surfaces.

The magnetic iron 3 has a shoulder 3-4 with which it is attached to a part fixed to the housing. Used to set the trip unit a pushing against shoulder 3.1 screw 8, so that the magnetic iron together with its armature and the bimetallic strip in the direction of firing movement of the armature and of the bimetallic strip under deformation of the lug 3 Λ · can be adjusted With this, the ^T Veg, the the anchor 4 and de? .Bimetallic strip 1 has to be measured for triggering, changed.

The anchor or its approach 4.1 and the bimetallic strip enforce recesses 9 of the slide slide 7 «meet when deflected from its rest position indicated in Fig. 4 to the opposite * 7and of the slide valve 7, so this is adjusted in the direction of the arrow drawn in FIG. 4 and in turn adjusts the to Au. release mechanism belonging lever 10.

The rest position of the armature 4 is not caused by the cutout of the slide 7 * but, as described for FIG. 1, by the cutout 3 * 3 of the attachment 3.2 of the magnet frame. An adjustment of the slide 7 by the bimetallic strip alone has no influence on the position of the anchor de · magnetic release.

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The bimetallic strip is heated indirectly, on the one hand by the heating coil sitting on it and on the other hand by the excitation coil of the magneto release. In the latter heating effect, the influence takes place of the bimetal strip not only through thermal radiation, but also through thermal conduction, because the magnet iron heated by the excitation winding 5 is converted into heat-conducting « Is in contact with the bimetal strip. In order to carry a bimetallic release, which is nimble in and of itself, more or less to make, the fastening point of the bimetal strip is placed on the magnetic frame so that the bimetal strip dips more or less into the magnetic frame and is accordingly more or less encompassed by the excitation winding. B. at the in Flg. 2 indicated Fastening part 11 of the bimetallic release responds quickly; so the bimetallic release becomes more sluggish, the more the fastening point is drawn in the direction dee in Fig. 2, Arrow placed 1st. To facilitate fastening of the bimetallic strip «on the» transverse leg of the magnet sens let which · he provided with a push-through ·

The hot winding of the bimetallic strip and the exciter winding for the Uagnotauslöeer are dimensioned so that the conduction of the coil carried by the bimetallic strip and the coil of the Magnetauelösorn are matched to each other, so that with the rwetfold det Vojmetroaee € λτττη the total Ausl8aerko * blnation die Heileietue) f vorwiefead vom der Irreferepulf de · Magneteu «-

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is applied loosely, applied and in Bemug on the Bimetal effective iat and with a load of more than twice the nominal current up to sum tripping by the Magnetic trigger also »but mainly the rice winding of the bimetallic strip is effective. Thereby the ratio of the heating power of the heating coil is twofold Bimetal release for the heating power of the excitation coil of the Ifagnetauslösera behave approximately like 0.15 to 1. This causes an overload of the excitation coil of the llagnetauslöser and the heating coil of the bimetal avoided

6 sheet description 2 sheets of drawings Claims

Claims

101110/0431

Claims (1)

ιιιμίαΐ ι vm UP ¹¹¹ J ' Licentia Patetat-Υβη 6 Frankfurt / Main, Theodor-Stern-Xai 1 68/12? f Frankfurt / Hain, the 6th De *. 1967 Pu / ft Claims i. Combined bimetal and magnetic release (quick release), see e.g. for motor protection switch, characterized in that one or more bimetal strips are heated indirectly on the one hand by a hot winding carried by the bimetallic release (s) and on the other hand by an excitation winding for the magnetic release, and that the bimetal strip (s) In thermally conductive Contact is made with the magnetic iron of the magnetic release. Combined bimetallic and magnetic release according to claim 1, characterized in that the heating power of the coil carried on the bimetallic strip and the coil of the magnet release are matched to each other so that up to about 2 JK of the total release combination, the heating power comes mainly from the excitation coil of the magnet release - Β9ΤΛ applied and effective in relation to the bimetal Is waä with a load of more than 2 JN until the trigger is triggered solely by the magnetic release, but predominantly the hot winding of the bimetal release is effective. 3 · Combined bimetallic and magnetic release according to claim and 2, characterized in that the ratio of 109810/0431 t588507 68/128 . The heating power of the heating coil of the bimetal release to the heating power of the excitation coil of the magnetic release behaves approximately like 0.15 «u 1. 4 ·. Combined bimetal and magnetic trigger after one. of claims 1 "to 3 _t characterized _f d _a ß & ± _e ^ heat influence of the bimetallic coil. by rli ζ exciter coil of the liagnetauslöser variable insofar as the bimetal dips differently deep into the exciter coil. 5 · Combined bimetal and magnetic release according to claim 4, characterized in that the base of the bimetal heat on the magnetic iron of the magnet release is attached. 6. Combined bimetallic and magnetic release according to claim to 5t, characterized in that the magnetic iron U-For.Ti has and that the bimetallic gliod is attached to the Q ^ arschenkel dos magnetic iron. 7 Combined bimetal and magnetic release according to claim ' to 6, characterized in that the transverse leg of the magnetic iron has an elevation on which the bimetal is a member is attached. 8 * Combined bimetal and magnetic release according to claim * to 7 * characterized in that depending on the successor BAD ORfOINAi. 109810/0431 68/128 a Lichen heat influence of the bimetallic link on the part of the exciter coil of the magnet trigger is placed at the base of the bimetallic link at a corresponding point of the longitudinal extent of the magnet iron. '. . Combined bimetallic and magnetic release according to claim 1 to 8, characterized in that the increase is achieved by embossing the magnet. 10. Combined bimetallic and magnetic disconnector according to claim 1 up to 9, characterized in that the bimetallic strip and the armature of the magnetic release are rectified from perform loosening movements. 11. Combined bimetal and lag release according to Anapruoh 1 to 10, characterized in that the magnetic iron carries a neck which, with a recess, surrounds the armature of the magnetic release and serves as a stop for the armature. 12. Combined bimetallic and magnetic aileron according to Anapruoh 1 to 11, characterized in that the armature or shoulder is provided with a non-magnetic support. 15 · Combined bimetal and MagnetauslHser NaOH claim 1 to 12, characterized _v dsduroh that the magnetic iron having a deformable neck, is attached to the bchal tergestell with the ··. Combined bimetal and Mftfnet release after address 1 109810/0431 bie 13t characterized in that the setting of the combined Aus) 8eere can be brought about by the setting of the magnetic release, so that the armature of the magnetic release is adjusted by the same distance as the bimetallic glledes. Lic ent la Patent Verwaltungs-GmbH BATH ORIGINAL 109810/0431 Blank page