US1102513A - Transformer. - Google Patents

Description

S. E. JOHANNBSEN..

TRANSFORMER.

APPLIOATION rum) 1320.20, 1912.

Patented July 7, 1914.

Inventor: Svenc/ E.Johannes en,

His Jltitor'n y.

UNITED STATES PATENT omen.

SVEND JOH'ANNESEN, 0F rIr'rsrI LD, MASSACHUSETTS, ASSIGNOR 'ro GENERAL ELECTRIC COMPANY, .A CORPORATION OF NEW YORK.

TRANSFORMER.

T 0 all whom it may concern Be it known that I, SVEND E. JoHAiINEsnN, a citizen of the United States, residing at Pittsfield, county of Berkshire, State, of Massachusetts, have invented certain new and useful Improvements in Transformers, of which the following is a specification.

My invention relates to transformers and the object of my invention is to reduce the amount of material and'space required for a transformer of a given capacity.

oretofore transformers have been so constructed that the primary windings tend to induce flux only in substantially parallel planes through any given portion of the cores". I propose to construct transformers having two sets of primary windings on a single core at a preferred or convenient angle to each other. The core is preferably laminated in effect with respect to both sets of windings. Each primary then tends to induce flux in the core at an angle to the flux which the other primary tends to produce; preferably this angle is a right angle.

By utilizing this feature in constructing transformers appreciable economy of materials and space may be achieved. The

specific forms which transformers involvmg my invention may assume are many; I have herein following described one form of construction involving my invention.

In the accompanying drawings forming a part of this-specification, Figure 1 is an elevation of a preferred form of transformer involving my invention; Fig. 2 is a sectional view along the line 22 of Fig. 1; Fig. 3 is a sectional view of the core sections taken along the 1ine'2-2 of Fig. 1, the core sections being separated, and Fig. 4; is an elevation of a partof the core.

The core 1 of this transformer 1s constructed of ring-shaped members 2, each of an annular cross-section as shown in Fig. 3. These ring members 2 are discontinuous throughout their length, that is, each has at least one opening transverse of its lepgth 'as shown at 3 in Figs. 1 and 4:. In the drawing two transverse openings in the members have been shown, but it will be understood that each of the ring members 1s preferably provided -with such an opening. These openings are. ,ofi'set from each other in assembling, as shown in Figs. 1 and 4c, and preferably will be distributed throughout substantially the entire length of the core 111 Specification of Letters Patent.

Patented July '7, 1914.

Application filed. December 20, 1912. Serial No. 737,875.

order that the heating which may be produced by the flux crossing these openings may be equally distributed. The members 2 of the core sections are of such sizes as to closely nest together as shown in Fig. 3. The section. however, is not made solid in that when finished its cross section is substantially semi-annular as shown in Fig. 3. Preferably as shown in Fig. 3, the adjacent members of each section are of different depths, and similar members of the two sections are of complementary depths, the two sections joined together forming a structure substantially solid and annular in cross section. The cross sectional relation of the members prior tothe assembling of the sections together is clearly shown in Fig.3, and

a cross section of the. complete core isshown section by reason of being made intwo sections.

Within the hollow ring core is placed one set of primary and secondary windings 4. This set of windings lies in the general plane of the ring core, and the primary thereof, therefore, tends to produce flux in the plane of the drawing of Fig. 2. On the outside of the core is placed another set of primary and secondary windings 5, the various turns of which are substantially in the radial planes of the ring core. The primary of this set of windings, therefore, tends to produce flux in the core in planes parallel to the drawing of Fig. 1. Each primary acts to induce an electromotive force in its own secondary and tends to have alone substantially no effect upon the secondary of the other set of windings; each primary tends to produce flux in the single core at a right angle to the flux producing tendency of the other primary.

The mode of connection of the windings to the circuits is substantially immaterial.

It is apparent that in this construction space and material are both economically employed. 1

What I claim as new and desire tosecure by Letters Patent of the United States, is

1. In a transformer, a core, a set of primary and secondary windings thereon, and

another set of primary and secondary windings also thereon and magnetically at substantially right angles to the first set of primary and secondary windings;

2. In a transformer, a core built up of laminations, a set of primary and secondary windings thereon wound in a direction substantially at right angles to the laminations, and another set of primary and secondary windings wound in a direction substantially at right angles to both thelaminations and the direction of winding of the firstrmentioned set of windings. I

3. In a transformer, a core, a set of primary and secondary windings thereon, the

primary tending to produce a)flux therein in one direction, andanother set of primary and secondary windings also thereon, the primary thereof tending to produce a flux in the core at an angle to the direction of the flux from the first-mentioned primary.

4. A transformer having a core substantially in the form of a ring, a set of primary and secondary windings thereon substantially in the plane of the core, and a set of primary and secondary windin s on the core wound in a plane or'planes suhstantially at right angles to the plane of the ring.

5. A transformer,having a core substantially in the form of a ring, the gore being discontinuous in a plane or planes substantially parallel to the general plane of the core and in a radial plane or planes, a set of primary and secondary windings thereon substantially in the plane of the core, and a set of primary and secondary windings on the core wound in a plane or planes substantially at right angles to the plane of the ring.

6. A transformer having a core composed of two sections each having a substantially semi-annular cross section and each being composed of nested hollow rings discontinuous throughout their lengths, the sections being joined together to form a ring of a substantially annular cross section, a set of primary and secondary windings located within the core, and a set of primary and secondary windings wound in substantially radial planes about the core.

In witness whereof, I have hereunto set my hand this 16th day of Dec, 1912.

' SVEND E. J OHAN NESENU Witness-es:

LLOYD M. Krntoonn,

l KNoLLMEYnn,

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