close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2405615

код для вставки
Au‘g- 13, 1946-'
‘F. J. SIGMUND ET'AL
' 2,405,515?‘
SUPPORT FOR WINDINGS IN MAGNETIZING CORES
Filed July 26, 1945
_
_
‘
I
_
INVENTOR.
‘7% M WWW- '
Patented Aug. 13, 1946
2,405,615
UNITED STATES PATENT QFFICE
2,405,615
SUPPORT FOR WINDINGS IN MAGNETIZING
CORES
Frank J. Sigmund and William S. Hlavin, Cleve
land, Ohio, assignors, by mesne assignments,
to Sigmund Corporation, a corporation of Ohio
Application July 26, 1943, Serial No. 496,136
12 Claims.
1
Our invention relates in general to winding
(Cl. 171-206)
2
ticularly to winding elements for dynamo-elec
spacer plate employed to centralize the sleeves
within the slots of the magnetizable core;
Figure 4 is a fragmentary and perspective view
tric machines and to the spacing of the windings
at a distance from the inside surface of the slots.
positioned in the slots of the magnetizable core;
elements for electrical machines and more par
This application is a continuation in part of
our application filed July 9, 1942, Serial No. 450,
240, for “Liquid-tight stator” now Patent No.
2,385,385, dated September 25, 1945.
An object of our invention is the provision of
centralizing the windings within the slots of the
:nagnetizable core of the electrical device.
Another object of our invention is the provision
showing an arrangement of sleeves which are
Figure 5 is an enlarged cross-sectional view of a
fragmentary portion surrounding a slot after it
has been ?lled with insulating material;
Figure 6 is a fragmentary end view of a stator
having insulating material ?lling the space around
the sleeves and covering the windings which ex
tend around the ends of the magnetizable core;
and
of a sleeve for each of the slots to envelope the
Figure '7 shows an enlarged cross-sectional view
windings therein and to hold the windings at a 15 of a fragmentary portion surrounding a slot in
a rotor after it has been ?lled with insulating
distance from the inside surface of the slot.
material.
Another object of our invention is to extend
With reference to Figure l which shows a cross
the sleeves which envelope the winding beyond
sectional view of a stator into which the features
the ends of the magnetizable core and to hold
the extended ends of the sleeves so as to space 20 of our invention may be adapted, the magnet
irable. core is identi?ed by the reference char
the sleeves at a distance from the inside surface
acter 20 which carries windings 2! comprising a
of the slots.
plurality of coils positioned in the longitudinal
Another object of our invention is the provision
slots thereof. The portion of the coils which lie
of completely surrounding the sleeves ?lling the
space between the sleeves and the inside surface 25 within the slots may be designated as coil sides
and the portion of the coils which extend beyond
of the slots with an insulating material which
the ends of the ma-gnetizable coil 20 may be
also functions as a mechanical support for the
designated as the coil heads. In the drawing,
windings as well as to make the windings water
the coil sides are designated by the reference
tight and vibration proof.
30 character 22 and the coil heads by the reference
Another object of our invention is the pro
character 23. The laminations of the magnet
vision of centralizing the windings within the slots
izable coil- 20 may be held together in any suit
of the magnetizable core by utilizing centralized
able manner and, as illustrated, ring plates 24
sleeves or support means so as to leave a space
positioned upon each end of the core may be em
between the windings and the inside surface of
ployed for this purpose. The ring plates 24 com
the slots to enable air or other cooling medium
press the laminations together to make a rigid
to come into intimate contact with the windings
construction.
Within the slots of the magnet
to cool same.
izable core we insert perforated sleeves 25 hav
Another obiect of our invention is the pro
ing openings 23 in their side walls so that the
vision of supporting the sleeves within the slots 40 insulating material which surrounds the sleeves
at a distance from the inside surface of the slots.
may readily ?ow in intimate contact with the
Other objects and a fuller understanding of our
windings. The object of the perforated sleeves
invention may be had by referring to the follow
25 is to centralize the coil sides within the slots
ing description and claims, taken in conjunction
of the magnetizable core. so that the coil sides do
with the accompanying drawing in which:
45 not mechanically touch the magnetizable core.
Figure 1 is a cross-sectional view of a stator
The ends of the perforated sleeves 25 may be cen
of a, dynamo-electric machine embodying the fea
tralized within the slots in any suitable manner
tures of our invention, the section of Figure 1
and, as illustrated, they are centralized within
being taken along the line |--l of Figure 2;
the slots by means of spacer plates 26 which are
Figure 2 is a cross-sectional view taken along
disposed at a spaced distance from the ends of
the line 2-2 of Figure 1 and shows particularly
the magnetizable core by means of hollow tubes
the sleeves for holding the windings at a spaced
36 through which screws 37 extend which se
distance from the inside surface of the slots of
curely hold the spacer plates 26 to the ends of the
the magnetizable core;
magnetizable core. The spacer plates 26‘ may be
Figure 3 is a fragmentary planned view of a 65 made of any suitable material and we prefer em
2,405,615
31
4
ploying any suitable insulating material made of
plastic composition. As shown in Figure 3, the
cizers and other substances may be added to ob
tain desirable electrical, physical, chemical and
mechanical properties.
spacer plate
is provided with a plurality of
notched openings 313 which are in substantial
alignment with the slots of the stator. The
notched openings are arranged to receive the end
of the perforated sleeve 25 to hold the sleeve at
distance from the inside surface of the slots.
In certain constructions of dynamo-electric
Solvents may be em
ployed to facilitate the application of any of
these materials.
For submersible motors, the space between
the outside surface of the sleeves 25 and the in
side surface of the slots are completely ?lled
with the insulated material indicated by the
machines, the length of the machine may be in reference character 39 as shown in Figure 5 for
stator construction, and as shown in Figure 7
relatively long in the range of one to eight feet
or longer and in these types of construction we
for a rotor construction.
provide for supporting the perforated sleeves in
terial may also be molded or formed about
coil heads as indicated in Figure 6, making
total windings completely liquid~tight. The
sulating material not only serves to insulate
termediate their ends in order that they may
not give as the coil sides are being inserted in
the slots. For this type of construction, we
employ a plurality of backing devices or ?exible
straps 29 and a plurality of side rods 3!], see
Figure 4, which will be sometimes referred to as
backing means. The flexible backing straps 29
extend from one spacer plate to another and
The insulating ma
the
the
in
the
windings, but also acts as a mechanical support
for the windings and as a liquid-proof container
around the windings. The windings are thus
liquid-proof, insulation proof, and vibration
proof. The sleeves 25 may be made of sub
stantially the same material as the insulation
material so that they become readily fused to
gether as one piece.
In those cases where the motors need not be
made liquid-tight, the windings may then be
dipped in an insulating material which is rela
tively thin to give a surface coating thereon
while leaving a space between the outside sur
face of the coated sleeves and the inside surface
of the slots so that the windings may be venti
lated by forcing air or any other cooling medium
between the outside surface of the coated sleeves
and the inside surface of the slots. The dis
tance between the outside surface of the sleeves
and the inside surface of the slots may be of
are arcuate in cross-section so as to ?t in the en
larged cut-away portion 3! as shown in Figure 3.
The side rods 3i} also extend between the spacer
plates 25 and are arranged to ?t in the arcuate
side notches 32. Considerable pressure may be
applied to the coil sides while they are being
inserted in the perforated sleeves in the slots;
With the use of a backing means as indicated,
the sleeves still maintain their centralized posi
tion within the slots. After the coil sides are
inserted within the sleeve and the wires are
properly adjusted, the backing strips 29 and
rods 39 may be removed by withdrawing them
in one direction from the spacer plate and the
slots of the stator. The strips and rods are
any suitable dimension and is preferably main
made ?exible so that they may be bent to clear
tained at a minimum 50 long as enough space
the windings as they are removed. The throat
is provided to receive the insulated material for
of the sleeves 25 may be closed by longitudinal
strips 33 which may be made of any suitable 40 the purpose intended.
In this invention, the windings may be con
perforated material to allow the insulating ma
sidered as ?oating within the slots of the mag
terial which is to surround same to ?ow there
netizable core, in that the windings are sup
through. The closure strips 33 are substan
ported by a spider-like construction at a dis
tially U-shaped in cross-section and are ar
ranged to ?t inside of the sleeves 25. The clo 45 tance from the inside surface of the slots of the
magnetizable core. Accordingly, by means of
sure strips keep the windings in the sleeves 25‘.
our construction, the insulating material may
The coil heads 23 may be anchored to the
penetrate the slots to completely envelope the
spacer plates 25 by means of wrapping cord 38
which is shown by a dash-dot line.
windings.
The wrap
ping cords 38 loop under the spacer plates and 50
up over the coil heads, then back again under
the plates. The wrapping cords 38 securely bind
the coil heads to the spacer plates and prevent
longitudinal moving of the windings within the
Although we have described our invention
with a certain degree of particularity, it is un
derstood that the present disclosure has been
made only by way of example and that numerous
changes in the details of construction and the
After the windings are securely mounted 55 combination and arrangement of parts may be
resorted to without departing from the spirit and
to the slots and after the backing means are
the scope of the invention as hereinafter claimed.
removed, the windings are ready to be treated
with the insulating material.
We claim as our invention:
The insulating material may be applied to the
1. In the construction of a magnetizable core
windings by dipping the magnetizable core and 60 with a plurality of winding slots and windings in
the windings in a liquid-like insulating material
said slots, the improvement of spacer means for
or by casting or forming the insulating material
spacing the windings in the slots at a distance
about the windings in any suitable molds or dies
from the inside surface of the slots comprising,
such as illustrated in our application, Serial No.
in combination, a sleeve for each of the slots to
450,240, hereinbefore identi?ed. The materials
substantially envelope the winding, and means at
slots.
suitable for insulation include the thermoset
ting plastics such as phenol-formaldehyde, urea
formaldehyde, and combinations or variations
thereof; the thermoplastic such as polymers
and co-polymers of vinyl chloride, vinyl acetate,
vinylidene chloride, methyl methacrylate, and
combinations or variations thereof as well as
synthetic or natural waxes, resin, rubbers and
rubber-like materials or combinations, varia
tions and modi?cations thereof. Fillers, plasti
the end of and connected to the core for engag
ing the sleeves and holding the sleeves in the
slots at a distance from the inside surface of the
slots said sleeves thereby providing an unob
structed passageway between the sleeves and the
inside surface of the slots throughout the length
thereof, and said means for engaging the sleeves
providing communication from the said passage
way in the slots to the core ends, whereby cool
75 ing media may be conducted through said pas
2,405,615
5
sageway from the core ends to. cool the. magne
tizable core.
2. In the construction of a magnetizable core
with a plurality of winding slots and windings in
said slots, the improvement of spacer means for
spacing the windings in the slots at a distance
from the inside surface of the slots comprising,
in combination, a sleeve for each of the slots to
6
each end of the core and having apertures for re
ceiving the ends of the sleeves for holding the
sleeves in the slots at a distance from the inside
surface of the slots, each of said plates being
spaced from and being constrained against lat~
eral movement with reference to the ends of the
core, removable backing means for the sleeves in
the slots, said backing means having ends remove
ably supported by the said plates.
envelope the winding, said sleeves having ends ex
6. In the construction of a magnetizable core
tending beyond the ends of the core, and means 10
with a plurality of winding slots and windings in
at the end of and connected. to the core for en
said slots, the improvement of spacer means for
gaging the sleeves and holding the sleeves in the
spacing the windings in the slot at a distance from
slots at a distance from the inside surface of the
the inside surface of the slots comprising, in
slots said sleeves thereby providing an unob
structed passageway between the sleeves and the 15 combination, a sleeve for each of the slots to en
velope the winding, said sleeves having ends ex
inside surface of the slots throughout the length
tending beyond the ends of the core, means at
thereof, and said means for engaging the sleeves
the end of and connected to the core for engag~
providing communication from the said passage
ing the ends of the sleeves for holding the sleeves
way in the slots to the core ends, whereby cool
in the slots at a distance from the inside surface
ing media may be conducted through said pas
of the slots, and closure means for the sleeves to
sageway from the core ends to cool the magne
keep the windings in the sleeves said sleeves there
tizable core.
by providing an unobstructed passageway be
3. In the construction of a magnetizabie core
tween the sleeves and the inside surface of the
with a plurality of winding slots and windings in
slots throughout the length thereof, and said
said slots, the improvement of spacer means for
means for engaging the sleeves providing com”
spacing the windings in the slots at a distance
munication from the said passageway in the slots
from the inside surface of the slots comprising,
to the core ends, whereby ?uid media may be con
in combination, a sleeve for each of the slots to
ducted through said passageway from the core
envelope the winding, said sleeves having ends
extending beyond the ends of the core, a plate 30 ends.
7. In the construction of a magnetizable core
on each end of, and connected to the core and
with a plurality of winding slots and windings in
having apertures for receiving the ends of the
said slots, the improvement of spacer means for
sleeves for holding the sleeves in the slots at a
spacing the windings in the slots at a distance
distance from the inside surface of the slots the
from the inside surface of the slots comprising,
said plate on each end of the core serving as
in combination, a sleeve for each of the slots to
bridge support members for the sleeves with the
substantially envelope the winding, and means
sleeves bridging therebetween and forming an
at the end of and connected to the core for en
unobstructed passageway space between the
gaging the sleeves and holding the sleeves in the
sleeves and the inside surface of the slots through
out the length thereof, and the said plate on each 40 slots at a distance from the inside surface of the
slots, said sleeves thereby providing an unob
end of the core providing communication from
structed space between the sleeves and the inside
the passageway in the slots to the core ends,
surface of the slots throughout the length thereof
whereby air may be conducted through said pas
and a mass of insulating material between the
sageway to cool the said magnetizable core.
sleeves and the inside surface of the slots.
4. In the construction of a magnetizable core
8. A liquid-tight winding element for a dyna
with a plurality of winding slots and windings in
mo-electric machine comprising a magnetizable
said slots, the improvement of spacer means for
core having a plurality of winding slots, a wind
spacing the windings in the slot at a distance from
ing comprising coils with coil sides in said slots
the inside surface of the slots comprising, in com
and coil heads at the end of the core, a sleeve for
bination, a sleeve for each of the slots to envelope
each of the slots to substantially envelop the
the winding, said sleeves having ends extending
beyond the ends of the core. a plate on each end
of the core and having apertures for receiving the
ends of the sleeves for holding the sleeves in the
slots at a distance from the inside surface of the
slots, each of said plates being spaced from and
being constrained against lateral movement with
reference to the ends of the core the said plate
on each end of the core serving as bridge support
members for the sleeves with the sleeves bridging
therebetween and forming an unobstructed pas
sageway space between the sleeves and the inside
surface of the slots throughout the length there
of, and said plate on each end of the core pro
viding communication from the passageway in
the slots to the core ends, whereby an unob
structed passageway is provided throughout the
core slots to the exterior of the core.
5. In the construction of a magnetizable core
with a plurality of winding slots and windings in
said slots, the improvement of spacer means for
spacing the windings in the slot at a distance
from the inside surface of the slots comprising,
in combination, a sleeve for each of the slots to
envelope the winding, said sleeves having ends
extending beyond the ends of the core, a plate on
winding side in the slot, said winding being closely
compacted with interstices therebetween of
smaller cross-sectional area than the cross-sec
tional area of an individual wire, a mass of in
sulating material of the class including polymer
ized and copolymerized substances in the slots
comprising liquid-proof container about each
sleeve and coil side, said mass of insulating ma
terial terminating in an annular ring upon each
end of the core and enclosing the coil heads to
make a ?uid-tight winding, said insulating ma
terial in the slots and in the annular ring being
integrally joined and set as a unitary mass by
polymerizing without the application of pressure.
9. A liquid-tight Winding element for a dyna
mo-electric machine comprising a magnetizable
core having a plurality of winding slots, a winding
comprising coils with coil sides in said slots and
coil heads at the ends of the core, means anchored
at the end of the core and bridging between the
ends of the core and extending through the slots
for stabilizing the coil sides in the slots at a dis
tance from the inside surface of the slots, there
by forming an unobstructed space between the
coil sides and the inside surface of the slots,
2,405,615
7
8
throughout the length of the slots, a mass of in
velope the winding, and means engaging . the
sulating material of the class including polymer‘
ized and copolymerized substances in the said
the sleeves in the slots at a distance from the in
sleeves and the magnetizable core for holding
side surface of the slots, said sleeves thereby pro
unobstructed space in the slots comprising a
liquid-proof container about each coil side and 5 viding an unobstructed space for said insulating
mass throughout the length of the slots, and said
the stabilizing means, said mass of insulating ma
sleeve engaging means providing a passageway
terial terminating in an annular ring upon each
from the slots to the core end whereby said mass
end of the core, and means enclosing the coil
heads to make a fluid-tight winding.
of insulating material in the core slots and in the
10. In the construction of a magnetizable core 10 annular masses on the ends of the core may be
integrally connected.
with a plurality of winding slots and windings in
12. In the construction of a magnetizable core
said slots, the improvement of spacer means for
with a pluraiity winding slots and windings in
spacing the windings in the slots at a distance
said slots, the improvement of spacer means for
from the inside surface of the slots comprising, in
combination, a sleeve for each of the slots to sub 15 spacing the windings in the slots at a distance
stantially envelope the winding, and means en
from the inside surface of the slots comprising, in
gaging the sleeves and the magnetizable core for
combination, a sleeve for each of the slots to sub
stantially envelope the winding, and means en
holding the sleeves in the slots at a distance from
gaging the sleeves and the magnetizable core for
the inside surface of the slots, said sleeves having
a wall structure including a perforated sheet of 20 holding the sleeves in the slots at a distance from
material.
the inside surface of the slots, said sleeves there
11. In the construction of a magnetizable core
by providing an unobstructed passageway between
with a pluralityof winding slots and windings in
the sleeves and the inside surface of the slots
said slots and a mass of insulating material of
throughout the length thereof, said sleeve en
the class including polymerized and copolymer 25 gaging means providing a passageway from the
ized substances surrounding said windings in the
slots to the core ends, whereby continuous com
slots and forming an annular mass upon each end
munication is provided from one end of the core
of the core and enclosing the windings, the im
to the other through the slots and around the
provement of spacer means for spacing the wind—
sleeves.
ings in the slots at a distance from the inside sur 30
FRANK J. SIGMUND.
‘face of the slots comprising, in combination, a
WILLIAM S. HLAVIN.
sleeve for each of the slots to substantially en
Документ
Категория
Без категории
Просмотров
0
Размер файла
688 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа