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Патент USA US2409669

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Oct. 22, l'946..
H. J. DAILEY
2,409,668
HEAT TRANSFER MEANS AND METHOD OF ASSEMBLY
‘Filed‘July 18,‘ 1942
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INVENTOR
H-JT ,D/Y/LE'Y
BY
‘ATTORNEY
Patented Oct. 22, 1946
2,409,668
UNITED ‘STATES PATENT OFFICE
2,409,668
HEAT TRANSFER MEANS AND METHOD OF
ASSEMBLY
Hampton J. Dailey, Bloom?eld, N. J ., assignor to
Westinghouse Electric Corporation, East Pitts
burgh, Pa., a corporation of Pennsylvania
Application July 18, 1942, Serial No. 451,448
4 Claims.
1
This invention relates to heat transfer means
and particularly to cooling means applied to and
in combination with an external electrode of an
(01. 189-35)
2
Figure 2 is a sectional View of the core showing
steps of fabrication; and
Figure 3 is a sectional View of anode and core
electron discharge device, and method of assem
of Fig. 1 about to be assembled.
bly therewith.
'
In the speci?c embodiment of the invention
Heretofore electron discharge devices have
illustrated in said drawing, the reference numeral
been constructed with envelopes partly of glass
ii) designates an electron discharge device in
general, ‘having usual triode or other electrodes
and partly of metal, at least one of the external
1'. etal parts constituting an electrode. A particu
of which the anode ll shown herein is formed
lar instance of such construction is incorporated 10 as part of the envelope and provides a peripheral
rim portion l2 sealed into an edge margin of
in the present showing wherein the external
glass portion E3 of said envelope. The anode
metal part constitutes in part an anode. C'on
sequential upon the heat developed in the metal
structure, while not per se novel, enters into the
lic anode, the junction between the metal and
present invention as illustrative of the metallic
glass is subjected to high temperature differ 15 portion of the electron device to which an exter
ences. Radiators of one sort or another have
nal radiator is to be applied. Said anode is shown
been applied to the external part of the metallic
as an inverted dome the base part of which curls
electrode, and in application of a sleeve type of
or ?ares outwardly at M and then downwardly
radiator the fabrication has involved use of solder
to form said rim portion 12 spaced from and
for obtaining tight contact for insuring maxi 20 engirdling a part of the body of the anode nearest
mum conduction of heat from the electrode to
the base part thereof. The structure accordingly
the radiator. The solder, on entry of the elec
provides an inverted channel i5 between the dome
trode into the core, is frequently forced from the
or body portion of the anode and said rim por
intervening device and strikes the glass part of
tion l2; The glass portion i3 of the envelope is
the envelope either causing immediate breakage 25 provided with a reentrant edge margin 16, and
or a weakened spot which develops into a defect‘
it is‘this reentrant margin which is sealed to» the
and point of leakage. To avoid this, insuf?cie-nt
said rim portion i2 of the anode.
solder has frequently been employed thereby
The heat transfer means or radiator, desig
leaving an air gap between the electrodeand
nated in general by numeral ll’, comprises a
radiator core with resultant loss of conduction. 30 metallic core [8 the lower portion whereof has
An object of the present invention is to over
?ns 18 extending longitudinally thereof and
come the detrimental eifects of prior art con
radiating therefrom. The outer longitudinal
struction and method of fabrication.
edges of the ?ns are here shown engaging and
A further object of the invention is to improve
attached to the inner face of a ring 28 surround
the structure and method of fabrication and at 35 ing the annular series of ?ns. As here shown,
the same time reduce discards or'shrinkage- in
the ?ns are situated at their inner longitudinal
manufacture and development of defective de
margins in grooves 2! provided in the outer sur
vices in use from the cause mentioned. ‘
face of the lower cylindrical part of the core.
Another object of the invention is to obtain
Other constructions of ?ns and means of attach
maximum heat conduction from the electrode 40 ment may be substituted.
to the radiator core.
The upper part of core I8‘ is hollowed, thereby
Yet another object is to reduce the time and
providing an anode cavity 22 shaped to conform
attention required of the operator in making a
perfect assembly of the electrode and. radiator
to the dome shape of the anode. Assembly clear
ance and manufacturing tolerance results in a
45 minute space existing between the cavity wall
Still further objects and advantages will be
and the anode, and that space is ?lled with a
come apparent'both by direct recitation thereof
?lm of solder 23 during fabrication. It may now
and by implication from the context as the de
be pointed out that the upper part 24 of core I8
core.
scription proceeds.
is annular, due to the cavity 22 therein, and this
Referring to the accompanying drawing in
which like numerals of reference indicate similar
parts throughout the several views;
entrant glass margin [6 and the body of the
Figure 1 is a longitudinal sectional view of an
electron discharge device with a cooling means
annular part of the core enters between the re
anode as well as between the channel-forming
parts of the anode, so that the upper end of the
core is above the edge of the glass and therefore
applied thereto in accordance with my invention; 55 solder ejected from the provided space is apt to,
2,409,668
3
4
and frequently has in the past, contacted with
and often lodged upon the glass. The present
speci?cation or illustrated in the drawing, shall
be interpreted as exemplary and not in a limiting
invention overcomes this prevalent detrimental
condition.
sense. It is also to be understood that the follow
ing claims are intended to cover all of the generic
and speci?c features of the invention herein
shown and described and all statements of the
scope of the invention herein set forth as a mat
ter of language which might be said to fall there
In the upper end edge of the annular part 24
of the core is provided an over?ow catch basin
formed by means of an annular channel 25. As
this channel is interposed between the space for
the solder and the glass part of the envelope,
excess solder from said space will lodge in said
channel, thereby protecting the glass. Since the
channel is annular or continuous around the
anode, large amounts of solder extruded at one
between.
I claim:
I. A heat exchange means comprising a core
having a cavity opening upward and having a
closed bottom, said cavity adapted to receive a
position will flow around to parts of the channel
device for heat exchange purposes by conduction
where no solder has been caught, and thus the 15 from said device through the material of the core,
channel will accommodate irregularity of extru
said cavity adapted to contain material in a ?uid
sion of the solder. If desired, and where space
state subject to extrusion at the upper edge of the
permits, the outer wall of the catch basin or chan
cavity upon introduction of said device into the
nel may be made higher than the inner wall, as
cavity, said core having means for accommodat
shown, to more positively prevent over?ow of 20 ing excess of the ?uid material extruded from
the extruded solder.
the cavity.
In manufacture, and as indicated by the show
2. A heat exchange means comprising a core
ing of Figure 2, the cavity 22 of the core is a having a cavity opening upward and having a
propriately cleaned and kept in best condition
closed bottom, said cavity adapted to receive a
for adherence of the solder. Cleaning may be 25 device for heat exchange purposes by conduction
by acid or otherwise, after which a ?ow of hydro
from said device through the material of the core,
gen is maintained in the cavity until ready to
said cavity adapted to contain material in a ?uid
insert the anode therein. Solder 26 in proper
state subject to extrusion at the upper edge of
amount is placed in the cavity and the core is
the cavity upon, introduction of said device into
heated so that all parts thereof are above the 30 the cavity, said core having a channel for ac
melting point of the solder. Flame 2'! is indica
commodating excess of the ?uid material extruded
tive of appropriate heating means.
from the cavity.
Next, the anode is forced, as being done in
3. A heat exchange means comprising a core
Fig. 2, gradually and ?rmly into said cavity, the
having a cavity opening upward and having a
anode displacing the melted solder and forcing 35 closed bottom, said cavity adapted to receive a
it to rise in the space between the anode and core.
device for heat exchange purposes by conduction
The fact that the entire core is above the tem
from said device through the material of the
perature of the solder assures ?ow, without solidi
core, said cavity adapted to contain material in
?cation, to the upper edge of the core. Likewise,
a ?uid state subject to extrusion at the upper edge
excess solder extruded from the space, will con 40 of the cavity upon introduction of said device into
tinue in its liquid state and will flow into the
the cavity, said core having a continuous annular
catch basin or channel 25 and will level-off there
channel for accommodating excess of the ?uid
in to take care of a very considerable over?ow.
material extruded from the cavity.
Thus it can be assured that the solder completely
4. A heat exchange means comprising a core
?lls the space between the anode and core and 45 having a cavity opening upward and having a
that the extruded excess will be accommodated
closed bottom, said cavity adapted to receive a
and. retained by the channel so none will contact
device for heat exchange purposes by conduction
the glass part of the envelope. Cooling of the
from said device through the material of the core,
core is then permitted and the solder will accord
said cavity adapted to contain material in a fluid
ingly harden in place giving full surface connec 50 state subject to extrusion at the upper edge of
tion throughout the cavity with the anode.
the cavity upon introduction of said device into
Since the various details of construction, and
the cavity, said core having a channel for ac
steps involved in the method, as well as the pre
commodating excess of the ?uid material extruded
cise relation and functioning of parts are subject
from the cavity, the wall of the channel furthest
to variation and change without departing from 55 from the said cavity having greater height than
the inventive concept or scope of the invention,
the wall of the channel nearest said cavity.
it is intended that all matter contained in the
HAMPTON J. DAILEY.
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