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Патент USA US3075552

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Jan. 29, 1963
Filed Jan. 28, 1959
FIG. 2
Fred W. Dleslng
ite Sttes
; atent
Patented Jan. 29, 1963
Fred W. Diesing, East Williston, N.Y., assignor to Fan'
child Stratos Corporation, a corporation of Maryland
Filed Jan. 28, 1959, 'Ser. No. 789,717
5 Claims. (Cl. 137-338)
Wall 15 has an opening 16 therethrough which provides
adequate clearance for the unobstructed movement of the
valve 2 therein. It may be noted that the limits of move
ment of the valve 2 are such that a portion thereof is
always interposed within the opening 16.
The extreme lower end of the housing 1 is provided
with a downwardly depending neck portion 17 which has
a passage therethrough forming the continuation of the
This invention relates to a valve assembly which regu
passage 5. It is the ?ow through the passage 5 that is
lates the ?ow of a ?uid at high temperature and in which
provision is made for cooling the valve by an induced 10 regulated by the position of the valve 2 relative to the
valve seat 3. The position of the valve 2, in turn, is con
?ow of a ?uid at lower temperature.
trolled by the pressure within the bellows 6. As the
Valves which regulate the ?ow of ?uids at high tem
pressure within the bellows 6 increases, the bellows ex
peratures, for example, valves which control the bleed
pands, moving the lower free end downwardly and mov
or discharge of combustion gases from a combustion
chamber, are subject to failure by reason of the high tem 15 ing the valve 2 closer to the valve seat 3. This, of course,
reduces the rate of ?ow of the ?uid through the passage
perature conditions within the valve assembly, especially
therebetween. As the pressure within the bellows de
the valve and valve seat. The present invention provides
creases, the bellows tends to contract, lifting the lower
a novel assembly in which the ?ow of the high tempera
free end of the bellows, and thereby raising the valve
ture ?uid induces a ?ow of ?uid at lower temperature
away from its valve seat.
through the valve assembly which induced ?ow brings
Air intake ports 18 are formed at the upper end of
the ?uid at lower temperature into heat exchange rela
the housing 1. Also, a plurality of larger exhaust ports
tionship with the valve and valve seat. This induced cir
19 are provided in the wall of the housing 1 below the
culation of the ?uid at lower temperature reduces the
temperature of the valve and valve seat and helps prevent 25 wall 15. A ?ow of cool air is induced through the housing
1 by the ?ow of hot ?uid from the passage 5 through
failure of the valve assembly.
open valve 2 to the discharge ports 19, the cool air serv
For a complete understanding of the present invention,
ing to reduce the temperature of the valve assembly and
reference may be made to the detailed description which
prevent its failure.
follows and to the accompanying drawing in which:
This ?ow of cool air enters the upper portion of the
FIGURE 1 is an elevational view showing the valve 30
housing through the ports 18, passes between the outer
assembly of the present invention in cross section,
surface of the annular wall 7 and the inner surface of
FIGURE‘ 2 is a schematic view of a system in which
the housing, and through the restricted passage formed
the valve might be employed.
Referring to FIGURE 1 of the drawing, the valve as
by the clearance between the valve 2 and the opening 16
sembly of the present invention comprises ‘generally a 35 into the lower portion of the housing and thence out
wardly through the exhaust ports 19. The air thus cir
housing 1, a movable valve 2 accommodated within the
culated is brought into heat exchange relationship with the
housing, a valve seat 3 forming the upper end of an annu
.parts of the valve assembly, including the valve 2, the
lar wall 4 de?ning a passage 5 therethrough, and a pres
sure controlled actuator 6 for regulating the position of
valve seat 3, and the outer surface of the wall 4 before
the valve relative to the valve seat.
As shown, the pressure controlled actuator 6 is an ex
being exhausted through the exhaust ports 19.
In one application of the valve assembly of the present
pandable and collapsible bellows which, by its inherent
resiliency, is normally urged to collapsed condition. The
invention, the valve is used as a bleed or bypass for com
bustion gases within a combustion chamber. For ex
ample, in the application schematically shown in FIG
bellows 6 is accommodated within a cylindrical wall 7
which is open at both ends. The upper end of the cylin~ 45 URE 2 of the drawing, combustion gases are relieved
from the combustion chamber of a jet rocket engine in
drical wall is provided with an outwardly projecting ?ange
order to regulate the speed of operation of a turbine
8 by means of which the cylindrical wall is mounted to
driven by the engine. In this system, a solid propellant
the upper wall of the housing. The upper end of the
stored in the chamber 25)‘ burns or decomposes, pro
bellows in turn is ?xedly connected to the upper end of
ducing combustion gases which are exhausted through
the cylindrical wall.
the conduit 23. These combustion gases serve as the
The upper open end of the bellows communicates with
impelling ?uid used to drive the turbine wheel 21. The
a passage 11 which is de?ned by a neck portion 12 of
turbine wheel 21 is mounted on a shaft 22 through which
the housing. The passage 11 connects the interior of the
other equipment may be driven. A bleed valve 24 of
bellows with a source of variable control pressure by
means of which the position of the valve 2 is regulated 55 the type shown in FIGURE 1 is provided to control the
energy transmitted by the engine to the turbine wheel 21.
with respect to the valve seat 3.
The bleed valve, in turn, is controlled by a governor 25
The lower end of the bellows is closed and carries a
which produces a variable control pressure which corre
movable disc 9 which is guided for movement within the
sponds to the speed of operation of the turbine wheel 21.
cylindrical Wall 7. The valve 2 is connected to this mov
The governor 25 may, for example, be of the type de
able disc 9 by a valve stem 10. The valve stem 10' car 60 scribed in the copending application of James C. Green
ries a shield 13 thereon immediately above the valve 2.
lees, Serial No. 761,616, ?led September 17, 1958.
The shield 13 serves to protect the actuator for the valve
In the event of overspeed operation of the shaft 22,
from damage by the high temperature of the ?uid which
a reduced pressure is transmitted through the conduit 26
?ows through the valve. Being of larger dimensions than
to the actuator 6 of the valve 24. The actuator 6, in
the lower end of the cylindrical wall 7, the shield 13 also 65 turn, responds to this reduced pressure by further open—
serves as a stop to limit the upward movement of the
ing the valve 2 to increase the rate of exhaust of the
valve 2 away from the valve seat 3. This maximum open
gases through the passage 5 of the valve
position of the valve 2 is determined by the engagement
with the exhaust conduit 23.
of the upper surface of the shield 13 with the lower edge
70 These exhausted combustion gases ?ow upwardly through
of the cylindrical wall 7.
the valve 2 and the discharge ports 19, inducing a ?ow
The chamber de?ned within the valve housing 1 is
of air through the air intake ports 18 as described above
divided into upper and lower portions by a wall 15. The
so as to intermingle the cooler air with the hot combus
tion gases to cool the parts of the valve assembly. The
hot combustion gases thus relieved from the exhaust
conduit 23 through the valve 24 reduce the energy of
'3. A ?uid cooled, high temperature valve assembly as
set forth in claim 1 in .whichrthe pressure controlled actu
ator is an expandable and contractable bellows.
4. A ?uid cooled, high temperature valve assembly com
prising a housing, a partition separating the interior of
the housing into different chambers, means de?ning a ?ow
the impelling ?uid directed against the turbine Wheel 21,
thereby reducing the speed of .the turbine wheel until a
predetermined speed is reached at which a condition o?
equilibrium is established.
Similarly, in the event of an underspeed operation of
passage for a relatively hot ?uid through one of the cham
bers of the housing, a valve seat dividing the ?ow passage
into a passage upstream of the valve seat and a passage
the turbine, an increased pressure is transmitted through 10 downstream of the valve seat, a valve cooperating with
the conduit 26 regulatingthe valve to reduce the bleed of
the valve seat to control the ?ow through the ?ow pas
exhaust gases from the conduit 23 to speed upthe turbine
sage, means de?ning an inlet port inthe other chamber of
wheel until a condition of equilibrium is attained.
said housing establishing communication between a cool
The invention has been shown in preferred form only
ing ?uid andthedownstreampassage, and means de?ning
and by wayof example, and obviously many modi?caitons 15 an opening in said partition connecting the said chambers,
and variations may be made therein without ‘departing
atleastaportion of the valve being accommodated within
from the spirit of the invention. The invention, there
said opening through the partition so as to de?ne a re
fore, is not to be limited to any speci?ed form or embodi
stricted passage, wherebythe ?ow of the relatively hot
ment except insofar as such limitations are expressly set
?uid through the-?ow passage induces a ?ow of. the cool
forth in the appended claims.
20 ing ?uid into that chamber from the other chamber
I claim:
through, the restricted passageto cool the valve.
1. A ?uid cooled, high temeprature valve assembly
5. A ?uid cooled, high temperaturevalve assembly as
comprising a housing, a partition within said housing
set forth in claim 4 including arresting wnttolled actu
dividing the interior of the housing into separate cham
ator in'the chamber in @mmunimtiOnWith the cooling
bers, means de?ning a ?ow'passage for a relatively hot 25 ?uid, .21 protective shieldihaving anew-end surrounding
?uid through one of the chambersof the housing, a valve
seat dividing the ?ow passage into a passage upstream o?
the valve seat and a passage downstream of the valve seat,
a valve cooperating withthe valve seat tocontrol the?ow
through the ?ow passage,_a pressure controlled actuator 30
accommodated Within the other of said chambeIS, means
portion of said valve, the clearance between the opening
and the valve de?ning arestricted passage therebetween,
and means de?ning a port in the housing establishing com
munication between the chamber accommodating the pres
sure controlled actuator and a sourceof cooling ?uid, the
,2. A ?uid' cooled, high temperature valve assembly as
set forth in claim 1 including a shield ‘within the chamber
accommodating the pressure controlledactuator and car
ried by the valve.
References Cited innthe?leof this patent
flow of ?uid through the valve inducinga ?ow of the cool
ing ?uid from one chamber to the other chamber through
' i
and another shield carried by the valve intermediate-the
partitionand the .hopen end of. the ,said firsténientioned
shield to protectthe pressure controlledactuator. ‘
de?ning an opening in the partition to accommodate a
the restricted passage to cool the valve.
the pressureicqmrelled actuatqr, the pater Periphery of
the shieldand the-.ipnersurrface 9f the housing de?ning a
passage .therebetween for the ?ow of the cooling ?uid,
Schuler ______________ __,_ Aug.‘ 7, 1917
Winton ____;__'__'_,___‘___'Apr'. 26, 1921
"Bruneau ‘_
Friedl '_ "'
' ;. Oct. 25, 1921
_ Aug. V27, 1929
4Whit'e ;'__
Neuland '_‘_p_____"__
_'_'Jan. '15, 1935
J.‘ Jan.'2'0,"19?42
rugh' ,__;;____;;;___;___'_' June‘ 11,1946
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