DE1712924U - SELF-STARTING SINGLE-PHASE AC MOTOR, IN PARTICULAR FOR HAND GRINDING DEVICES. - Google Patents

Description

PATENT Attorney DIPL.-ING. EGGS. STUTTGART-N KÖNIGSTRASSE 14

** - Ί— ^!

June 8, 1954 / K

Applicant: Festo-Maschinenfabrik (Xot.tlieb Stoll _s Eftlingen «♦ $,

Usage model application
4-4558

Self-starting single-phase AC motor especially for surface sanders «

Self-starting end of single phase-n -'- VechöeMrommotoren with cCurasöhlußanker are in different Attsführungsfornien known "Most of the automatic start dtftrch nine absehaltbare auxiliary phase is erawungen odfer an auxiliary phase with condenser * Further, & ± ηδ called Spaltpolisotoren oeicannt, in which the two superimposed over-, PoIe of the laminated stator core have a hat for a one-sided arrangement of a KurasoKluÄring »Auxiliary phase motors are susceptible to failure and therefore only poorly suited for the rough operation of Handachle%. degree, and their performance is too low in view of the rapidly changing demand for handheld devices.

The invention makes a single-phase alternating motor created, in terms of its performance * ,;

jnk: V ^ ürtt. Landessparkasse Stuttgart Account No. 27 - Postscheckkonto Stuttgart No. 42930 - Telephone 94507 -

This is similar to that of the auxiliary phase motors, but with the other advantages of shaded-pole motors ", according to the invention," the stator lamination packet is provided with a large number of evenly distributed over the circumference, as is the case with known ones. " in. which the simultaneous short-circuit ring in the usual way- έ two opposing windings consisting! ^ main winding is distributed ", and for generating ςίβδ field of each of the two windings of an extending ü iialbe number of flutes, h compared to the 'orientation in Uemf

\ Vl

which passes blindly in the main winding through the two outer grooves - the butene group next to those located in these grooves and forms on the end faces of the laminated stator core of the laminated stator core can be provided with a short-circuit ring to earth without weakening the heat of the main winding, which enables a safe start-up and prevents disruptive heat build-up * '*'

The short-circuit ring is preferably composed of two stamped parts, each of which has one at e Front side of the laminated core adjacent singing sector and a straight, after a right-angled turn through a Stator slot and. at. whose

are

are " encircling the snug absciinitt, and the two partsAiacjh Insertion into the stator laminated core on the stub, l6si. welded or soldered to each other

I "i

snugly and on both front sides d ^ js ^ iech- '. "', ■■ /? short-circuit ring, which fits flat, is limited despite ■■. * '

ample cross-section does not disturb the changing room ■■. :., '' ■!

not even with the winding of the stator »The Bp winding- \" ~, '^; - ^:

äes stator can be used in the usual way by normal trickle-> i ,: "~ '"

'take place. This is a cheap serial '' [

fabrication possible. '~ ''"'

^ An invention is described below using one of the '"' * 'Λ

The illustrated exemplary embodiment is explained *, *. . ", Ϊ.3 show - '' H -..- ΛL:

F ¹ Ig-I a circuit diagram of the motor, '· --- ·' ¹⁵¹ Ig ^ a cross section of the stator, ·. ■■

'PIg.3-a' section along line TII-III of * ig.2, · '·, /' Ί \

Pig · .4 a stamped sheet metal part of a short-circuit ring. . \ _; ":. .'_

The stator core 20 is, as in three-phase motors; ._ '.'

known per se, to accommodate the stator winding 'Hit einije "! ."' S variety of (in the example twelve) Kuten versehe ^, ... T

the one on the inside. ... t, ounxora with only narrow slots \ -J open through which the wires of the windings e

, (instilled) ^ The main winding consists of opposed partial windings, each -'.- 's in three in the circuit diagram Fig, 1 with 21,22,23 and 2Τ \ ·· 22% 23 * '"'

■ 'te designated bundles are divided. Each of the at df ... Wick - "'-'

lung extends over an "angle of 180 °, so that in two

; '■' - ■ ": opposing rages (4 and 10 in Pi ^, 2). .

the wires of the two outer bundles of both tfieklimgen ^vr,. lie »The liege.nci & | Grooves (I and 7 in Pig. 2) remain empty. The two _t .lungs are, as usual, between the two Anscb-li

- 4 U and V connected in series.

Each of the two windings is arranged in a 2 [j or » 26 '4ä $, which extends over half the length and through the two outer grooves of the group of grooves (of 6 grooves) next to the sensitive wire bundles of the main winding? cHift | l | i. Ä and forms ring sectors lying on the two end faces of the stator sheet. Bp8% «f | L;, pi. The two and ? .Β are offset in relation to the windings * The guide example goes through the 'slot pairs 6, 11. As a result, in the embodiment rii 27 of the main winding opposite the axis' 28 of the

at least

rin ^ e 25 and 26 'offset by / 30 ° (Pig. 2).' Hence- - Kurzsc'ilu.'iringen induced alternating current: ■ ge current of the main winding out of phase and this © a rotating field »

In the exemplary embodiment, the short-circuit ridge ^ 4ek '> or » 26 is composed of two stamped parts (preferably ^ in # t' * ':; ^ copper sheet). Such a let shown in Fig. 4 * He has a rin ^ sectors Z * 5; φ; ΐ ^ Μ;:; ' Section 30 and a · ■ '... of its ei ^ pm ^ AaM''' :! "^^ inwardly directed straight, section 31 · At * Ί section 31, the stator slot provided for it is bent at right angles at 32 (for example, 'plugged in, then the annular sector-shaped A ^ lies on an end face of the' stator lamination packet, 'straight section 31 nestles the Kutengrun € ^^ other half of the "short-circuit ring is" with

y.y &

straight section 31 is inserted from the other end of the stator into the second groove (for example slot 1.1). Then the two ring halves are welded or soldered to one another at the joints between the free ends of their ring-gate-shaped and straight sections 30 and 31. The stator thus provided with the short-circuit corrugations 25 and 26 can be wound unhindered, i.e. the slot slots remain free for the introduction of the windings and the sections 31 (lying in four slots) of the two short-sole rings 25 and 26 when the. -'HXgklsWg, not, büötbji xw & .Ärotz. ample. · Cross-section practically does not reduce the groove space aura accommodating the main winding.

Claims (1)

PA539i28 * -3.9.54 Expectations. 1 »Self-running five-phase T / echselstronamotor with Short-circuit anchor, characterized in that upon distribution the main winding, which consists in a known way of two opposing ring windings, to one Large number of slots in the stator lamination stack, evenly distributed over the circumference, to generate a rotating field, each one of the two iYickliaigen each other about half the number of nuts extending j opposite the windings in the circumferential direction ' , vex's set short-circuit 3ring is assigned, which is caused by the two outer grooves of the group of grooves covered by it next to the wire bundles of the Kauptwicklmig goes through and on both 'front sides Rin, -f sectors lying on the stator core forms * In-phase alternating current generator according to Claim 1, characterized in that gsikexin shows that the course closing ring consists of two. Stamped sheet metal parts is composed, each of which has a ring sector resting on an end face of the Slechpaköt and fine straight lines, following right-angled turns : through a stator slot and to be stuck to whose base includes clinging section and that the two parts after dem.Einsetzen in the Blechßä ^ et at the 8tof3atellen disconnected or soldered together " are,-· .