US1115440A - Dynamo-electric machine. - Google Patents

Description

F. R. KUNKEL.

DYNAMO ELECTRIC MACHINE.

APPLICATION FILED JULY 6,1908.

1, 1 1 5,440. I Patented Oct. 27, 1914.

3 SHEBTS-SHEET l.

WITNESSES INVENTOR 0L1, QM

ATTORNEY F. R. KUNKEL.

DYNAMO ELECTRIC MACHINE.

APPLICATION FILED JULY6,1908

1,1 15,440. Patented 001;. 27, 1914.

3 SHBETS-SHEET 2.

WITNESSES: INVENTOR F. R. KUNKEL.

DYNAMO ELECTRIC MACHINE. APPLICATION FILED JULY 6, 1908.

Patented Oct. 27, 1914.

3 SHEETS-SHEET 3.

- I VEN 08 old. 2? 0 WITNESSES! ATTORNEY mgavzww' fecting ventilation and cooling thereof.

been effected in connection FRED R. KUN'KEL, OF EDGEVIOOD PARK,

OFFICE.

PENNSYLVANIA, ASSIGNOR, BY MESNE AS- PITTSBURGH, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA DYNAMO-ELECTRIC MACHINE.

Specification of Letters Patent.

Patented Oct. 27, 1914.

Application filed July 8, 1908. Serial No. M2178.

To aZZ whom it may comer/1.:

Be it known that I. Fnnn'I-t. KUNKEL, a citizen of the United States, and a resident of Edgewood Park, in the county of Allegheny and State of Pennsylvania, have invented a new. and useful improvement in Dynamo-Electric Machines, of which the following is a specification.

My invention relates to dynamo-electr c machines. and particularly to means for et- The object of my invention is to so con struct and arrange the parts of a dynamoelectric machine as to cause and permit more effective cooling and ventilation than has with machines heretofore constructed.

Figure 1 of the accompanying drawings is a view in longitudinal section and in side elevation of a machine constructed in accordance with the present invention. Fig. 52 is a longitudinal sectional view through a portion of another machine also embodying the invention, and Fig. 3 is view, in end elevation, of a rotatable member for the said machines.

The. machine comprises, as is usual, stationary and rotatable laminated core-members 1 and 2, the former of which is supported upon rods or bolts 3 and is mounted within an inclosin g casing 4% for the machine, annular passages being provided between the outer circumferential face oi? the member and the casing. The stationary member is provided with a winding 6 that may be of any desired and suitable form.

The supporting spider for the rotatable core member 2 comprises a sleeve 7 having radially projecting longitudinal ribs '7 upon which the core lamince are mounted, an outwardly projecting annular flange 8 at a considerable distance beyond one end of the core and radial vanes 9 between the flange and the corresponding end of the core, all of said spider parts constituting a one-piece integral structure for supporting the core laminae and providing ventilating passages to discharge currents of air against the projecting ends of the stationary coils 6, and also 'cool the core 2. The vanes 9 also act as fan blades to cause the circulation of air through the ventilating passages during the 1 operation of the machine.

When the rotatable member of the machine is in motion, the vanes 9 cause a movement of air radially outward in the direction of the arrows 10, thus drawing air longitudinally through the passages provided in the rotatable member by the ribs 7, as indicated by the arrows 11, and causing drafts longitudinally through the passages 5 between the stationary core member and the casing in the in the passages in the rotatable indicated by tween the ends of from those member, as the arrowsv 12, as well as bethe passages in the staopposite direction tionary and rotatable members at the end of the machine opposite the vanes 9, as indicated by the arrows 13. Thus, it is seen that the from the innermost heated portions of the circulation of air occurs through and machine to the outermost portions, or adacent to the casing, con teri that the drafts of air ends of the coils 6.

While the invention is from which the heat veyed by the air is radiated to the exor of the machine, it being noted further also pass between the particularly adapted for employment in machines that are entirely inclosed, very effective in structures, in which inwardly at one end through the as shown in Fig. 1, it is also machines having open the air may be drawn winding at ing claim as my invention:

A rotatable member for dynamo-eleccomprising a core and a onehaving, as inthat constitute and an outflange constituta continuation of the body of the sleeve beyond the corresponding end of the core to deflect the air currents radially outward.

trio machines comprising A rotatable member for dynainoeleca core and a onepiece supporting structure having, as integral parts thereof, a sleeve, longitudinal ribs, an outwardly pro ecting annular flange COD stituting a continuation of the body portion of the sleeve at one end and radial vanes disposed between the flange and the the core member.

. dynamo-electric machine comprising .ing ventilating passages of a rotatable member ary coils.

stationary and rotatable members having laminated cores, an inclosing casing therefor, and a longitudinally ribbed sleeve support for the rotatable core member having an annular deflector at one end constituting a continuation of the body portion of the sleeve support, whereby currents of air are caused to flow through the rotatable member longitudinally from one end thereof in contact with its core and radially outward at the other end and between and in vcontact with the stationary core and the 5. In a dynamo 4 electric machine, the

combination with a stationary member comprising a casing, a'core and coils and having ventilating passages between the casing and the core, of a rotatable member having passages extending longitudinally thereventilating passages through the stationary the stationary member, and

b0 the rotatable member and the through and an annular deflector at one end of the passages and constituting a continuation of the inner walls thereof to deflect the air currents through the stationary ventilating passages in and means for causand between the coil spaces to the the stationary member, ing a circulation through said passages.

6. In a dynamo electric machine, the combination with a stationary member comprising a casing, a core and coils having between the casing and the core, of a rotatable member having passages extending longitudinally therethrough 1 and an annular deflector at one end constituting a continuation of the inner walls of said passages to deflect the air currents coil spaces to the passages in vanes disposed radially between one end of the core of ends of the passages in the said member.

In testimony ,Whereof, I have hereunto subscribed my name this 20th day of June, 1908.

1' FR D R; KUNKEL.

Witnesses IV J. BnANsoN, BIRNEY HINES.

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