close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2405831

код для вставки
E3, i194@
R. w. JENSEN
TEMPERATURE AND PRESSURE CONTRO'L
Filed Jan. 21, .1944
- Zßœßäì
l
k3 Sheets-61h59@ l
É
d?
i'
f:
W
E3
ßrwentof:
@www Mdm/fm,
Away@ 23s ma
R. W. JENSEN
_
¿ma
TEMPERATURE AND PRESSURE CONTROL
Filed Jam 2l, 1944
3 Sheets-Sheet 2V
Aug@ E3, w46@
R w JENSEN '
TEMPERATURE AND PRESSURE CONTROL
'Filed Jan. 21, 1944 ,
s sheets-sheet s
2,495,831
Patented Aug. 13, 1946
UNITED STATES PATENT j OFFICE
p
2,405,831
TEMPERATURE AND PRESSURE CONTROL
Raymond W. Jensen, Los Angeles, Calif., assignor
to The Garrett Corporation, Airesearch Manu
facturing Company division, Los Angeles, Calif.,
a corporation of California
’
‘
’
Application January 21, 1944, serial No. 519,159
11 Claims.
1
This _invention relates generally to oil cooling
systems for internal combustion engines and to
controls for regulating the flow and> temperature
of oil from the cooler to the internal combustion
engine within a range most satisfactory for eii'i
cient operation and lubrication of the engine, es
pecially of the type used for aircraft.
Pressure lubricating systems for internal com
bustion engines are provided with heat exchang
ing means for regulating the heat of the lubricat
ing oil and maintaining it within a proper and ef
ñcient heat range. The heat exchanger is pro
vided with a bypass passage through which the
oil from the engine may circumvent the heat ex
changer when for any reason the oil is prevented
from passing through the cooling system. Ther
mostatic valve means are often employed to con
trol the ñowïof oil through the bypass passage.
When such a thermostatic valve means is em
(o1. 23e-s4)
2
I a device in which the control means for the valve
may be adjustably regulated to adapt the same
to varying conditions and to increase the sensi
tivity of the same for the important purpose of
extending the operating range and of making
unnecessary a replacement or substitution of the
control means where changing circumstances are
encountered.
Further objects and advantages of the invention
will be brought out in the following part o1’ the
speciñcation.
y
k
„
Referring to the drawings which are for illus
trative purposes only,
Y
Fig. 1 is a vertical sectional View showing a
control fitting embodying the invention and a
portion of a-cooler on which it may be mounted.
Fig. 2 is a horizontal sectional view taken as>
indicated by the line 2--2 of Fig. 1.
Fig. 3 is a vertical sectioñ taken as indicated
ployed, the cooled oil from the heat exchanger
and uncooled oil from the bypass passage now
past the valve` means, the operation of which is
controlled by the temperature of the oil. When
by the line 3-3 of Fig. 2.
a pressure build-up occurs in the bypass passage,
line 5-5 of Fig. 1.
Fig. 4 is a vertical section taken as indicated
by the line 4_4 of Fig. 3.
Fig. 5 is a view mostly in section taken on the
y
,
owing- to any'condition which impedes the free 25 Fig. 6 is an elevational view of a modified form
flow of oil through the cooler, the valve is un
of the invention.
seated'to relieve the pressure, and held unseated
until the valve is influenced to seat by the Aheat
of the oil when the condition of impedance in the
Fig. 7 is a section taken on the line 'I-'I of
Fig. 6.
i
v
Fig. 8 is a section taken on the line 8_8 of
heat 'exchanger is corrected. A type of valve 30 Fig. 7.
commonly used in lubricating systems of the class
To the heat exchanger I0, which is illustrative
mentioned'is known asv “sylphon valve,” which
of one form or type of cooler in which the valve
includes in its structure a bellows which forms
arrangement herein described may be used, is
a sealed expandable pressure chamber, which Yis
connected a fitting I I to which is secured a, con
subject to leakage and breakage ,and has a lim..
trol ñtting or housing I2, which is formed with
ited operating range.
v
`
The present invention relates'to a valve struc
ture for accomplishing temperature and pressure
‘ an inlet chamber I3 to receive the oil from the
engine. The chamber I3 of the housing I2 is
formed with a, port'opening I4, which registers
regulation which' eliminates the use ofbellows
with an opening I5 in the ñtting I‘I, providing a
and hence obviates any possibility of failure 40 passageway for thehot oil from the engine to the
thereof.
'
’
It’ is' an object of ‘the invention to provide a Y
Iiuid'cooling system combined'with temperature
and pressure control in which the possibilitylof
failure of operation of the control is eliminated
or reduced to'a minimum.
'
’
It is'also an objectof the invention to provide
a simple, efficient, and compact flow of oil and
heat exchangeriû, which, in the instance shown,
is comprised of a core I6 of spaced tubes I6’ with
means >for battling the circuit of oil therethrough,
anda muff or enveloping jacket Il. Entry of the
oil to the core I6 from the jacket or muff'is af
forded by `anopening I8. y The aforementioned
port or opening I5 is in direct communication
with said muff or jacket I1, through a port I9 in
temperature control which is light and susceptible
the fitting II as shown-in Fig. 5. The port open
to complete interchangeability with other valves 50 ing Il in the chamber I3, under normal condi
or- control means employed- in similar capacities.
A further object` of the inventionv is to provide
a, control means having a greater operating range
than valves similarly employed.
`
A furtherobject of the invention is to provide
‘ tions, is open, but under extraordinary condi
tions, as, for instance, in case of sudden pressure
build-up of the oil, it is arranged to be closed to
cause a relief of the pressure by bypassing it from
said chamber I3 'through a bypass I9' into a valve
2,405,831
3
chamber 20, from which it travels through an
outlet 2| from said chamber 20 to the engine,
directly or indirectly. For effecting this relief
from sudden pressure of the oil, a double valve 22
is provided in the chamber I3, and comprises a
valve member 23 on one end of a stem 24 and a
cylindrical »valvez25‘iat the -other end thereof." The ~
cylindrical Valve 25‘is held normally seated'on itsu
seat 25 by a compression spring 21 disposed in the
cylindrical hollow 28 of said valve 25 and con-i
tained Within a chamber 29 vin-*saldwñtting ¿12,
said chamber being provided With a cap 3D against
4
tively thereto and therewith. This piston 40 is
connected by rods or posts 4I with a supporting
slide member 42 which is slidably disposed within
a cylinder of a cap 43 secured to said housing I2.
A spring 44, positioned in the cylinder of the cap
43 exerts a pressure upon said slide member 42
tofhold'thefsame lagainst .a seat: 45 in-.theîcap 43
and‘to hold the associatedelements` of the valve
structure in set position. As stated, the valve 39
is‘mounted on the piston 40. It has independent
movement-'relativelythereto and such independ
ent movement is effected by a thermal responsive
which the compression of saiddspringL-Z'Ioccurs;
means;¿sucl-rl asaafbi-'metallic coil 46, connected
The seat 26 for said valve 25'isxima 'port-‘or open
ing 3| in said chamber 29 and Whenithe valve- 25”.’
is unseated, said port establishes communication
between the chamber I3 and '.th’ecbypass ,chamberi
at‘its outer’endto the end of links 4l which are
pivotallyl mounted‘j'in arms 48 of the valve 39.
'The opposite ends of said links 41 are pivotally
connected to‘linklmembers 49 which are secured
to> said.. piston 40. The inner end of the b1
I9', as shown in Figs. 1 and 2.
The cylindrical ._
valve 25 is provided with. guide members 32,"extending beyond the face thereof, and these guide
metallic' coil 4B is secured to a bar or other mem
ber 59, which is fixedly mounted on the rods 4I.
mem-bers -`cooperate- ~Withl the cylindrical: portion .
off-the valve and-thelopeninglSI»tomaintain the
sa'me; and its# companion f «valve A»23' »l in f , position.
The thermostatic runit C orl 2 coilf» -4 6 ’ Y responds ~to
the Viniluence 4of hot land~coldïoil~or other» Iiluid-ß
and, moving'jn“ either one Lor'fanother“direetionç
carries >with it' the valve 39 independently:off-the»When;Y for any reason;- af-pressureldevelops inthe >
chamber I3 which'Y is »inexcess of .the pressure re- » 25 mount"thereof 'ori piston 40e-that' is,` independ-'e
sisted
is' lifted-- by i against
said spr-ing
^ the»-2tension'
1;» the» cylindrical
of » saidilspring
valvef.1221"?`
from its seat 26, while, concurrently, th’e~valv’e«23lA
at»the«other»end¢ofethe»stem 24 ¿isseated inf-the
ently "of the ' piston 40'1‘iand = 'its-*asseciated-.fpartsf
which in association'with Athe-valve 39d' constitute.:V
a pressure'responsive-means: Inforderto use-all
of- the ,power 1 developed L fromvthe» »use--of- ’af-bl*
port or opening-I4’.i Tlfi-isaelevati‘on-oirthe double »09
valve 22 opens communication betweenlthe:cham»l -
metal; it is highlyimportant that'thefvalve ywhich'
is Ainfluenced by‘such'bi-meta-l ‘ibex'balancedùthat'
ber»4 I3 'andthe-bypassepassage :l 9! ,' and «thus-'re
lieves the pressure, in consequencewvl'iereoff thev
valves- 23iandy 25' underH the urge-of thespring 21
return to `normal position;~ as» shown .in- Fig. 1.
Thehousing. I2 ~is-formed A'Withï-a `bypass cham-.
is,zthat. pressures 'be-‘equal Von -alll~`sides~ or ‘parts
ber 33l-which- has ‘= an' lopening-'orv` port 33 'L- andY a
of the valve;A For'thisï-purposœthe piston'lllrh’as
the' same ‘diameter fas the-«valve‘seat- 5 I~,» andthe
innerdiameter of >the'valve 39 is nalso of- theI samei
diameter.V The‘va-lve member 39 -is cylindrical?
shown, and'is‘ffo‘rmeclîwithA a~ central 4lopening; 52‘»
which isdiametricallyssmaller thanthefdiametri-L
through. This `bypass chamben-33`f is essentially
cal ‘extent" or“ the ‘inner-"Wal'lí‘orrface vof the Yvalve
a pressure chamber, as explained¢hereinaiterî~fand
39;:and' with4 an`annular internalfshoulderfüï
communicates with a-bypass ~-passage 35 :insaid
ñtting II, this bypass passage~35 >lbeing-fin corn'.-N
Which.`> cooperates `~with' ' thecaforementioned" pis:
munication» Withlthe »muff f I'Iî andi arranged -`to
cause the oil to circumvent the-heat exchanger
rection, to-wit:` . away from its 'seatiâlg
ton 4 Il; to.limit"the >movement- 4thereof‘ìin one ïdi’-The-ex#
terior 'diameter' of the ‘,valve greater than-that:~
of' the, seat“‘5l',gand",the end ‘thereof “is tapered.
and rformedivith a spherical face Y54, which fa'-
|021 When.- for~any reason; the»\circuitf-ofßoil
through the core I6 of the heat exchangerilßí’ is.4
obstructed.' »the oil travels through- orearoundrone
area of the muri and, being prevented from-pass
The piston'.4ll“'is.„also provided with‘aspherical
ing throu'ghetl’ieppeningflß »tothe core` lëfcon
periphery 40’ì'to enablathe valve 39‘to rotate and;
tinues its‘travel through the muflî I'I, and even»
seatïitselïifîit‘ is' not'on center. Y The ,slide _mem
cilitates, itsA seating under“V adverse. conditions.
tuallyeenters `the bypass chambere33; - throughV the
b‘er, 42‘hasvan opening_„55"to provide fojr ,a balance
bypass `pa-ssageâ 5
ing Aor lport 33L~inathe housing» I 2 .'-~ The »circuit of
ofjfpressure . so th`at`any increase „in .pressure ,oc-_
casioned7 byanyA failure , in_th‘e`- cooler or.. heat 'ex
the~oil «is vindicated by'A arrowed linesein Fig;V 1, A as «is A
changerwilLbe exerted Íagainst‘thepiston 4Il‘and
also the travel ofà oil throughltheeoreof the-heat»
thus move the valve 391mm> it'sí,seat,î..regardless
theï‘hoi-ising~ "I I ‘andthe open
For purposes or' description;- said Y»chamber 33»
of the pressure at _which the.spring ¿44' set..
Whenan >impedance .or restriction, to„the.,f1ow.
may-‘be consideredl a-~--byp2iSS.l Alchamberì 2û~of~
thel *housing` I2- receivesecooledoil Vfromf-the- heat
of 'Íoilj is‘roiîëred ¿by the ,heat " exchanger .0n forA
exchanger.-
v
~
exchanger`v I0«'through‘»a aportfßSv/hich is-provided
Withwthe check- `-valve»3Iì-’~. The oil travels »from
said*l chamber ~-I Sblzlru‘ougli'`l` theeoutletv port v2 I; for
return~by-ganydesired 'course-'to theaengine:
ln‘this `»ch'am-ber12 (luis - arranged »a thermostati
other reasons,- a pressure „builds „11min the bypass
chamber 33 beyond'a determined limit,‘andiab'0ve„
such limit the springg‘lß will be compressed; thus’
causingthe -.entire .valve y_structure gto .be .,moved.
from 1 itsseat 5 I1 and .relieving pressure, .from the
heat exchanger. ..
cally controlledyvalve structure; generally indi- 65
cated- by-- 31,1 for controlling=the~flow lof uncooled
In" the unseated ` position _ ot fthe ,valve .39;1tlie
iluid „pressure ~, in . the ,bypassrcliamber ,3321s. bal-'
oil through~the~ openingfSß,A which is a communi
ancedfagainst. the ,piston 4B .îandjunder this .con
eating`-port~-between~the bypass chamberßß and
dition,A ‘the bi-metallic .thermostaticr coilI.4Ii,'.Í,be-.
ingjníluenced- by, the. .,h‘eat of „the .oil to expand.
easilyäopferates the valve member,39"to seating
thet chamberiû. ` Thieçvalvev ‘structureß‘l` com
prises apressure’responsive unitjanda thermoà
statically' operated valve; Vas hereinafter described.
The valve structure 3'I'îhas~a valve member
adapted to engage theY seat surrounding, theopen
ing 38 ’for closingthis opening. `‘The valve mem’
b‘er 39 ‘ismounted upon'a piston'f48 ‘to'move'rela 75
position: Reduced oil temperature will cause the
thermostat `to contract and ‘thereby to-‘open the
valve; In thefopen‘ position' of -the‘ valve',-- the
thermostat will be influenced«bythe-temperature
of‘the' oil‘fiowing through‘th‘e chamber' 33fwhich
amasar
ls uncooled, and the oil passing into the valve
chamber 3U, which is cooled, and obviously the
provided'with'perforations 68.- When this keyl or
lever 66 isV moved in a circular plane in either one
valve 39 will remain open until the desirable .op
direction or another, the tension of the coil 58
erating temperature of the oil is reached, at
which time the valve will seat and cause all of
the oil to iiow through the heat exchanger It
to and through the valve chamber 2D.
'
The invention as herein described provides a
through the medium ofthe shaft S4 to which the
dead end thereof is connected, may be regulated
in accordance with the range required to operate
the valve. It is obvious, therefore, that this regu
lationis of considerable importance in a device
device which is light in Weight, is interchange
of this type to accommodate the action of the >bi
able with the “sylphon” valve now used, elimi- 10 metallic coil to differing conditions, obviating
nates the use of bellows and hence obviates the
thereby the need of substitutions for this purpose
possibility of the failure of such bellows by leak
and the labor incident thereupon.
' '
age or breakage, has a greater operating range
' . When the lever or key B6 has been manipulated
‘and requires no threaded parts. '
to obtain the desired degree of tension of the coil,
it is secured in position of adjustment by a locking
A variation of the form of the invention, with
'out alteration of the sense of the disclosure here
tofore made, is illustrated in the form of embodi
vment shown in Figs. 6, '7, and 8, wherein like nu
merals of reference indicate like parts in all of
the views in the drawings.
'
- -The valve structure 3i has a valve member 3Q
adapted to engage the seat surrounding the open
ing 38 for closing this opening. The valve mem
ber 39 is mounted upon a piston @il to move rel
atively thereto'and therewith as has been point
ed out. This piston 43 is connected by bars 5v'ì
-with a supporting slide member ¿2 which `is slid-_
-ably disposed Within a cylinder of a cap d3 se
cured to said housing l2. The bars 56 are con
nected to the piston 40 and the piston member
v42 by any desired means, such as screws 5l, bolts,
or welds. As stated, the valve 39 has independ
ent movement relatively to the piston 55 and
-suchindependent movement i5 effected by a thermally responsive element, such as a bi-metallic
-'coil 58. The outer or free end of said coil 58 is
secured to a pin 59 which is carried in the ends
-of a pair of links 65. The other ends of said links
6U are pivotally connected to extensions 6i which
lare provided on said ñat bars 55 and project
therefrom at substantially right angles to the
longitudinal axis of said bars. The intermediate
V'or substantially the central portion of said links
are'pivotally connected to the ends of arms 52
which are integral or associated with the valve
-39 in a desirable manner.
'I‘he dead end 53 of
means, such as a pin screw or bolt 69 carried in
a lug 'iii on one of said ñat bars 5S, whichpin or
screw 6E! is arranged to fit into or pass through
one of the perforations 68 in the arcuate _flange 61;
Although I have shown but one form of my
20
invention, it will be understood that _various
changes and modifications may bemade without
departingy from the Vspirit and scope of the in
vention, and that the invention should becon.
strued in accordance with thespirit and scope
of the appended claims.
.
I claim as my invention:
1
l. A combined pressure andtemperature conf
trolled valve'ìfor controlling the iloW of a Viscous
fluid through a bypass port of a heat exchanger
having a normal heat exchange flow path, and a
bypass, including said port, for circumventing
said normal iiow path, comprising: an annular
valve element adapted to seat with reference to
said port, a piston within said valve element and
cooperating therewith to form a closure for said
port, a temperature responsive connection be
tween said piston and valve element `for moving
the latter with reference to the piston, and yield
40 ing meansurging the piston toa predetermined
position, said piston being movable against the
force of said yielding means by pressure in said
bypass and being adapted, when it thus moves,
to operate said Valve element, through said con
nection, to relieve said pressure.
,
`
2. lA combined pressure and .temperature con
>>the bi-metallic coil 58 is secured to a shaft 54
trolled valve for controlling the flow of a viscous
which extends through said flat bars 55 and is f' yfluid through a bypass port of a heat exchanger
mounted for rotation therein, the purpose of this
having a normal heat exchange flow path, a valve
being set out presently.
_
The structure as thus defined provides a valve
>which is movable relatively to the stationary pis
»ton 4B by the bi-metallic coil, the expansive and
`contractive effort of which is translated to the
‘end thereof, which connects with the free ends
0f the links 60. Since' the links are pivotally at
‘taohed at the other ends thereof to the exten
sions 6| of the ñat bars 56, they are moved about
chamber communicating with said port, and a by-.
pass, including said port, for circumventing said
normal viiow path, comprising: an annular valve
element adapted to seat with reference to said
port, a piston within Asaid valve element and co
operating therewith to form a closure for'said
port, a supporting member slidably mounted in
said` valve chamber and carrying said piston,
yielding means urging said member and piston to
- such pivotal attachment and such movement is
a predetermined position, and a temperature re
transferred to the valve 39. The arms 52 whereof, 60 sponsive connection between said piston and valve
"as explained, are pivotally associated with said
>element for moving the latter with reference to
links 60 intermediate their length.
f
For the purpose oi rendering unnecessary re
lplacements or substitutions of thermal coils to
ïmeet different conditions and t0 regulate the ac
-tionof the coil, whereby it will respond sensitively
`and to a nicety to a Wide range of requirements,
the- piston, said piston being adapted to‘mov'e
against the force of said yielding means in re
sponse to pressure in said lbypass and being
, adapted, when it thus moves, t0 operate-said valve
element, through said connection, to relieveV said
pressure.
a
,
Iïhave provided means for controlling the tension
3. A combined pressure and temperature con
fof ‘the coil. A means for this purpose is shown in
trolled valve for controlling the Viiow of a viscous
Figs. 6,- 7, and 8, and includes the aforementioned 70 fluid through a bypass port of a heat exchanger
Ashaft-(ill to which, as described, the dead end 63
having a normal heat exchange flow path and a
óf the con s@ is secured and which is mounted for
bypass, including said port, for circumventing
'rotation in the nat bars 56. On the projecting end
-said normal flow path, comprising: -an annular
'~-65 of-the shaft 64 is ñtted an end of akey or lever
'valve velement adapted to seat with reference to
ï-'Gûhavingat »the 'outer end an 'arcuate flange 61 75 said«-port,»-a piston within- said-Valve element and,
2,405,831
cooperating therewith to' forma closure for said
port, means to `yieldingly urgesaid piston> and
valve element. towardsy a port closing position,y and
a temperature responsive> connection between said
piston and valve element formoving the latter
with reference to the piston, said piston being
_yieldable in response to pressure in said bypass
and adapted, Awhen it thus yields, to operate said
valve element, through said connection, to relieve
8
saidport, a supporting member within said valve
element-and on which said valve’element is slid
ably mounted, said supporting member cooperat
4. A combined pressure and temperature con
trolled valve forr controlling the ñow of a viscous
ñuid through a bypass port of a heat exchanger
having a normal heat exchange flow path and a
ing with said valve element to form a closure for
said port, means for yieldingly urging said sup
porting member and valve element to a port clos
ing position, a thermostatic coil, one end of which
is connected to said support, and a leverl pivoted
on said valve element and connected at its respec
tive ends to said supporting member and the other
end of said coil, said lever and coil cooperatively
forming a temperature responsive connection be
tween said supporting member and valve‘element
for moving the latter with reference to said-sup
bypass, including said port, for circumventing said
porting member. '
said’pressure.
normal ñow path, comprising: an -annular valve
element adapted to seat with reference to said
port, a. piston within said 'valve element and co
operating therewith to form a closure for said
8. A combined pressure and temperature-con
trolled valve for controlling the now ofv a viscous
bypass, including said port, for circumventing said
other end of said lever, a shaft connected to
.fluid through a bypass port of a heat exchanger
having a normal heat exchange flow path and
port,` means to yieldingly urge said piston and 20 a bypass.` including said port, for circumventing
said normal flow path, comprising: an annular
valve element toward aport closing position, and
valve element adapted to seat with reference to
a bi-metallic coil forming a, temperature respon
said port, a supporting member within said valve
sive connection between said piston and valve ele
element and on which said valve element is
ment for moving the latter with reference to the
slidably mounted, said supporting member co
piston, said piston being yieldable in response to
operating with said valve element to form a
pressure in said bypass and adapted, when it thus
closure for said port, means for yieldingly urging
yields, to operate said valve element, through said
said supporting member and valve element to a
connection, to relieve said pressure.
port closing position, a lever pivoted on said
~ y5. A combined pressure and temperature con
trolled valve for controlling the flow of a viscous 30 valve element and pivoted to said supporting
member at one end, a loi-metallic thermostatic
fluid through a bypass port of a heat exchanger
coil, the outer end of which is connected to the
having a normal heat exchange now path and a
the center of said coil and journaled insaid sup
normal i‘low path, comprising: an annular valve
element adapted to seat with reference to said 35 porting member, and an adjusting elementvcon
nected to said shaft and adapted to 4be connected
port, a piston within said valve element and co
to said supporting member in any one of several
operating therewith to form a closure for said
positions of adjustment about the axis of said
port, means for yieldingly Jui-'ging said piston and
shaft.
valve element towards a port closing position, a Y
9. A combined pressure and temperature con
thermostatic coil, one end of which is connected 40
trolled valve for controlling the flow of a viscous
to said piston, and a lever pivoted on said valve
fluid through e, bypass port of a heat exchanger
element and connected at its respective ends to
having a normal heat exchange flow path and a
said piston and the other end of said coil, said
bypass, including said port, for circumventing
lever and coil cooperatively forming a tempera
said normal flow path, comprising: an annular
ture responsive connection between said piston
valve element adapted to seat with reference to
and valve element for moving the latter with ref
said port, a piston within said valve element and
erence to the piston, said piston being yieldable
cooperating therewith to form a closure for said
in response to pressure in said bypass and
port, said piston having` a spherical peripheral
adapted, when it thus yields, to operate said valve
element, through said connection, to relieve said 5 0 surface and said valve element having a cylin
pressure.
6. A combined pressure and temperature con
trolled valve for controlling the flow of a viscous
'ñuid through a bypass port of a heat exchanger
having a normal heat exchange flow path, and a
bypass, including said port, for circumventing
drical inner surface cooperating therewith to ,
permit sliding and universally tilting movement
of said valve element in
to said port, means for
piston and valve element
tion, and a temperature
seating with reference
yieldingly urging said
to a port closing posi
responsive connection
between said piston and valve element for mov
ing the latter with reference to the piston, said
said normal flow path, comprising: an annularv
valve element adapted to seat with reference to
piston being yieldable in response to pressure in
said port, a supporting member within said- valve
said bypass and adapted, when it thus yields, to
60
element and on which said valve element is slid
operate said Valve element, through saidconnec
ably mounted, said supporting member cooperat
tion, to relieve said pressure.
’ing with said valve element to form a closure for
10. A combined pressure and temperature con
said port, means for yieldingly urging said sup
trolled valve for controlling the iiow of a viscous
- porting member and valve element to a port clos
through a bypass port of a heat exchanger
ing position, and a temperature responsive con 65 fluid
having a normal heat exchange ñow path and
nection between said supporting member and
a bypass, including said port, for circumventing
valve element for moving the latter with refer
said normal flow path, comprising: a cylindrical
ence to said supporting member.
tubular valve element having a spherical and
7. A combined pressure and temperature con
trolled valve for controlling the flow of a viscous 70 roughly frusto-conical valve face adapted to seat
in saidlport, a piston having a spherical rim
viluid through a bypass port of .a heat exchanger
surface fitted Within said valve element, on which
-having a normal vheat exchange flowpath, and a
said valve element is slidable and universally
- bypass, including said port, for circumventing
tiltable to accommodate the seating of said valve
said` normal flow path, comprising: an annular
valve element adapted to seat with reference to 75 face in said port, means f_or >yieldingly urging
9
10
said piston and valve element to a port closing
11. A valve as set forth in claim 10, wherein
position, a valve chamber communicating with
the rim surface of the piston has a diameter
said port, a supporting member slidably mount
substantially equal to the diameter of said port,
ed in said chamber, means rigidly connecting
and wherein said valve element has an inwardly
said piston to said supporting member, and a 5 oñset end portion on which said valve face is
thermo-responsive connection between said Valve
formed, said offset portion forming an internal
element and connecting means, for moving the
shoulder serving as a stop to limit the movement
valve element with reference to the piston, said
of said piston in one direction within said valve
piston being yieldable in response to pressure
element.
in said bypass and adapted, when it thus yields, 10
to operate said valve element, through said con
RAYMOND W. JENSEN.
nection, to relieve said pressure.
Документ
Категория
Без категории
Просмотров
0
Размер файла
1 042 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа