DE2162104A1 - COIL FOR CONCENTRIC WINDINGS OF A TRANSFORMER OR A REACTOR - Google Patents

Description

SIEMENS AKTIENGESELLSCHAFT Erlangen H .. Dec. 1971

Berlin and Munich Werner-von-Siemens-Str.

Our sign VPA 71/3304 Ot / Ca

Bobbins for concentric windings of a transformer or a choke coil

The invention relates to a coil body for concentric windings of a transformer or a choke coil, separated from one another by an annular air duct, each mounted on a coil base. Λ

In a "known structure of such windings for transformers or choke coils, the primary and secondary windings are concentrically plugged into one another and subsequently im Ring air duct fixed by inserted wedges. This requires a relatively high manufacturing effort.

The invention is based on the object, the production of windings of the above type for transformers or To simplify choke coils and a certain mutual location of the concentric primary and secondary windings without to secure additional measures.

The object is achieved according to the invention in that the coil body has flanges that cover all of the windings is provided, the distributed around the circumference, after inwardly directed edge slots for receiving spacer strips, which are held immovably in the axial direction, between the on the coil body arranged inner winding and applied to the inserted spacer strips as the coil base have outer winding as well as air passages arranged in the area of the ring air duct.

309325/0560

-2 -

In the subject matter of the invention, the inner winding is in in a known manner applied to the coil base of the coil body penetrated by the iron core. Then v / ground as a spacer and spacer strips serving as the coil base for the outer winding are inserted into the edge slots of the flange and then applied the outer winding. The spacer bars have recesses at a distance between the two flanges, which the Edge slot width are adapted. The immovable spacer strips prevent the openwork ones from evading Flanges and thus increase the stability of the entire bobbin, since those protruding beyond the flanges in the axial direction Parts of the spacer bars have a larger cross-section than the edge slit width. The cross section of the spacer bars and / or the length of the edge slots can be chosen so that the spacer strips either out of engagement with the inner winding or rest on the inner winding. In the latter case, the spacer bars can advantageously -Her inner winding adapted and for example in the case of rectangular or square bobbins, angular be trained. In this case, only the cross-section of the spacer bars determines the distance between the inner and outer winding. By appropriately dimensioning this distance, the leakage inductance and thus the short-circuit behavior the windings are influenced. In addition, an annular air duct is concentric between the two through the spacer strips Windings secured, the axial cooling air duct in connection with the air passages in the flanges of the Bobbin allows "With a horizontal arrangement of the The outer winding is advantageously the bobbin axis from at least two spaced 2-part windings built, between which cooling air can flow. It can also be done with bobbins according to the invention Manufacture transformers and reactors with more than two windings, whereby the outer winding is replaced by separate, spacer strips inserted in the edge slots from the neighboring one inner winding is separated and the spacer bars in question form the respective coil base.

3 0 98 257 0550

The invention is based on a simple square sink body with two windings shown in the drawings explained in more detail below. ,

Pig. 1 shows a perspective view of a wound

Bobbin according to the invention, Pig. ¹ 2 shows a section through the Pig bobbin. 1 .

The coil body 1 ″ consists of the coil base 4 with a square Cross-section and the square puddles 6, the edge slits 5 directed diagonally inwards from the corners as well as air passages 8 in between. The inner winding 3 is applied to the winding base 4. In the the Randechlitze 5 inserted and fixed by this alone Spacer bars 2 are out of engagement with the winding 3. They form the coil base for the outer winding 7 and result together with the air passages 8, an annular air duct. The spacer strips 2 v / iron incisions, the -an axial Ensure fixation in the edge slots 5. When used horizontally, the outer winding 7 is divided so that a distance 10 between the two partial windings remains free, through which an air flow can take place.

5 claims,

2 figures

- 4 309825/0580 -

Claims (5)

Pa ΐ c η t ans ρ rüche jΊ. ^ coil formers for concentric windings of a transformer or a choke coil, separated from one another by an annular air duct, each mounted on a coil base, 'characterized in that the coil form (1) is provided with puddles (6) that overlap 3.j before windings , the inwardly directed edge protection (5) 7mt recording of in ^ xiaJ. direction unversohicbbor held spacer strips (2) Kvischen äer aiii: the inlaid spacer strips (2) as coils ^ round applied ίΙν.Ροτ · οη winding (7) as well as in the area of the Rin ~~ iir "t kaiials (9) arranged air passage (ti) exhibit. 2. bobbin according to claim 1, characterized in that the length of the Ran ir? chi it ze (5) and / ο ei. he the cross: n..i ttlargeo the Abstencisloir / üen (2.) are so gev.'äblt that the width of the liingluftkanals (9) is determined. 3. Coil body according to claim 1 or 2 _f thereby gekennneic ¹ : ^ - ^ "that it is reclitock-shaped and the edge protection (5) of ö. & N Ec] LOiI of the puddle (6) eröt diagonally inwards: cecl; t sino, 4. Coil body according to one of the preliminary claims. that the spacers protruding over the planes (6) ben (2) have a larger cross-section than the width of the edge slits and the distance between the two planes of the rooms. ι ds ciu it zbre.lt e. adapted AuGnehr.rangira? -ui '~ 5. Spulrn] r.body according to claim 1, characterized gejcenni / Oiclmet, dr: ß the ullier Wickiup /; (7) a "as miridcötenn £ v; tii in distance (ΊΟ) from each other on the. Spacer strips (2) with appropriate piece 5/0550 _BA0