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Патент USA US3070118

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Dec. 25, 1962
R. A. FISCHER
>
BALANCE DIAPHRAGM REGULATOR VALVE
3,070,108
Filed Aug. l, 1960
2 Sheets-Sheet l
"
i
le
INVENTOR:
?P/C?/ARD A. FISCHER,
A flor/ley.
De@ 25, 1962
Filed Aug. 1, 1960
R. A. FISCHER
BALANCE DIAPHRAGM REGULATOR VALVE
46
3,070,108
2 Sheets-Sheet 2
BYÖLIMM
A Homey.
Patented Elec. 25, '1952
l
¿La
an upper plate Ztl, a central plate 21, and a lower plate 22
secured together by fastening means such as rivets, not
shown. The inner periphery or central portion or" a dia
3,070,108
BALANCE DlAPHRAGM REGULATOR VALVE
Richard A. Fischer, Los Angeles, Calif., assigner to The
Garrett Corporation, Los Angeles, Calif., a corpora
phragm 24 is retained between the plates 2li and 21 and
the central portion of a diaphragm 25 is similarly re
tained between the plates 21 and 22. The outer periphery
of the diaphragm 24 is clamped between the wall of the
cap 11 and an annular ring 27 by suitsl le fastening ele
ments, not shown, and the same or similar fastening ele
ments may be utilized to clamp the outer periphery of dia
phragm 25 between the annular ring 27 and the wall of
the body 1t). Between the plates and the annular ring
tion of California
Filed Aug. 1, 1966, Ser. No. 46,589
1l) Claims. (Cl. 137-64)
This invention relates generally to devices for auto
matically regulating lllow of fluid and rnore particularly
to devices that regulate the ñow of lluid 'from a high
pressure source to a point of demand or use.
The simplicity and positiveness of the operation of the
invention makes it particularly well adapted for use in
respiratory devices, pressure regulators, or other similar
types of ílow control valves, ‘but it is to be understood that
the utility of the invention is not limited thereto.
27, the diaphragms 24 and 2 respectively have oppositely
extending arcuate convolutions 29 and 39 Aforming a
chamber 31 around the periphery of the movable wall 12.
The chamber 31 is connected with a supply of breath
able gas such as compressed air or oxygen, not shown,
by means of a conduit 313 secured to an inlet 5d formed
vOne of the objects of the present invention is to pro
vide a How regulator of the type referred to that is par
ticularly well suited to installations where inlet lluids 20
from a high pressure source must be controlled.
A further object of the invention is to provide a ñow
regulator of the type referred to having a `valve compris
ing llexible members proportioned and arranged so that
in the annular ring 27.
The arcuate convolutions 2i“
and 3€) are made equal in area so that the forces of the
high pressure inlet supply acting on the convolutions are
balanced. When the Awall 12 moves in response to a pres
sure diñferential acting across the wall, the convolutions
and the cap 11, and
the 'forces created by the hivh pressure inlet fluid are 25 roll on the inner walls of the body
the outer perimeters of the plates 2d and
balanced.
An exhalation valve indicated generally at 355 is posi
A still [further object of the invention is to provide a
tioned in the approximate center or" the movable wall 12
ñow regulator that is operated by relatively slight pres
by means of a pin 36 which slides freely in a drilling in
sure variations.
Another object of the invention is to provide a ilow 30 the movable wall. The exhalation valve 35 includes a
valve member 3T adapted to normally esclude a plurality
regulator having a simple means of effecting Zero leakage.
of apertures 3S arranged in spaced radial relationship
Still another object of the invention is to provide a
about the pin 36. A spring 3E“ is positioned about the
flow regulator whose component parts do not require
pin 36 and co-acts between the plate 22 and the head of
critical tolerances or tits thus contributing to and satisfy
ing the additional objects or" minimum machining, rapid 35 the pin to urge the valve member 37 in a closing direction.
A plurality of passages ¿itl formed in plate 2_2 connect
production and low cost.
chamber 31 with the chamber 1d. As shown 'in FlG
Other and further objects ot the present invention will
URE 1, the ends 41 of the passages ¿lil are occluded by
become apparent from the disclosures in the following
the arcuate convolution Si) of the diaphragm _25 when
detailed speci'ñcation, appended claims, and accompany
the pressures on the opposite sides of the movable wall 12
ing drawing, wherein:
40
are
balanced, the high pressure gas in chamber 31 hold
FIGURE 1 is a sectional view taken centrally through
ing the convolution 3 in sealing engagement with the
a respiratory device embodying one vform of the present
ends 41 of the passages dll.
invention;
In use, inhalation will produce a reduction in the pres
FIGURE 2 is a sectional view similar to FIGURE l
sure within the chamber 14, causing the movable wall
12 to move toward the chamber 14, and the convolution
but illustrating the respiratory device of FIGURE 1 in
the position assumed during inhalation;
30 will roll on the plate 22 and uncover the ends 41 of
the passages 40, as shown in FIGURE 2. The breath
able gas then will flow from the source through the
ñed yform of exhalation valve;
FIGURE 4 is a sectional view tai-ken centrally through 50 chamber 31 and passages 4t) into chamber 14, and thence
through the conduit 16 to the point of use. Upon eX
a pressure regulator showing another form of the present
FIGURE 3 is a sectional ‘iew of a respiratory device
of the type shown in FIGURE l but illustrating a modi
halation, the exhalation products will be carried through
invention.
Referring to the drawings, in which like numerals
identify similar parts throughout, the invention is illus
conduit 16 to the chamber 14 and pressure in chamber
14 will increase causing the movable wall 12 to move up
trated in FIGURE l and FIGURE 2 of the drawings in 55 wardly so that the convolution 3l? of the diaphragm
25 will roll on the plate 22 and again seal the ends 41
the form of a respiratory ydevice having a body 10 and
of the passages 49. When the pressure within chamber
a cap 11. A respiration responsive movable lwall in
14 is increased above the pressure of the ambient tluid
dicated generally at `12 is secured between the body and
in chamber 15, the movable wall 12 will seat against a
the cap in the manner hereinafter described to provide a
chamber 1d» within the body 1t) and a chamber 15 within GO stop (not shown) and the pressure acting on the under
side of the valve member 37 will move the valve member
the cap 11.
to permit a flow of
The respiratory device is adapted for use in conjunc
exhalation products from the chamber 14 through the
tion with a face mask or a suitable mouthpiece, not
apertures 38 into the chamber 15 and thence out into
shown, and the chamber 14 communicates with such
point of use by means of a conduit 16 secured to an out
65
let 17' ‘formed in the body 10. ln the embodiment of
the invention shown in FIGURE 1 and FIGURE 2, charn
ber 15 communicates lwith the ambient i'luid medium
which is admitted to the interior of the chamber through
70
spaced radial openings 18 provided in the cap 11.
The respiration responsive movable wall 12 includes
the surrounding fluid medium through the openings 18.
When the pressures in chamber 14 and chamber 15 are
equalized the spring 39 will move the exhalation valve
member 37 downwardly to cover the apertures 38 and
the movable wall 12 will be centrally positioned as shown
in FIGURE 1. The inhalation-exhalation cycle may
then be repeated until the supply of breathable gas is
expended.
‘
3,070,108
Lì
ence pressure, not shown, by means of a conduit 60 se
Adjustable means comprising a spring 43 disposed in
cured to an outlet 61 formed in the cap Il. The conduit
chamber 14 between the lower side of the movable wall
33 in this form of the invention is connected with a source
i12 and the inner wail of the body Ml, and a spring 44
of compressed fluid and the conduit 16 is connected to `an
disposed in chamber i5 between the upper side of the
enclosure wherein the pressure is to be maintained equal
movable wall i2 and a spring retainer ¿i5 are provided U1 to the reference pressure. The enclosure may, for ex
to center the movable wall when the pressures on the
opposite sides thereof are equalized. If desired, the
spring retainer $5 may be positioned so that a load is
ample, be a compartment or a duct wherein the pressure
of the lluid normally would diminish due to leakage or
use, and the device shown in FÍGURE 4 is utilized to
applied to one side of the movable wall and a screw 46
maintain the pressure in the enciosure equal to the refer
10
and a lock nut 47 are provided to maintain the retainer
ence pressure.
45 in adjusted position.
in operation, chamber 1S is subjected at all times to
The respiratory device illustrated in FIGURE 3 of
the drawings is identical to the respiratory device shown
in FÍGURE l except for the exhalation valve. The
modilied form of the exhalation valve in FIGURE 3 corn
prises a plurality of passageways 50 formed in the mov
able wall I2 and adapted to conduct Huid from cham
the reference pressure which is introduced through the
conduit 6i). When the pressure of the fluid in the enclo
sure wherein the pressure is to be maintained falls below
the pressure of the reference pressure in chamber 15, the
resultant reduction in pressure in chamber
will create
a pressure differential across the movable wall l2 and
ber le to chamber i5 as hereinafter noted. The ends
cause the wall to move toward the chamber I4. The con
5l of the passageways Sil communicate at all times with
the chamber llé- while the ends 52 of the passageways 20 volution 39 will then uncover the ends 4l of the passages
4d and l‘luid will ñow from the pressure source through
are occluded and sealed by the arcuate convolution 29
the chamber 3l and the passages 4t) into the chamber 14
when the pressures on the opposite sides of the movable
and thence to the enclosure. When the pressure in the
wall l2 are balanced or when the movable Wall 12 is
enclosure, and hence chamber i4, becomes equal to the
positioned as shown in FIGURE 2 in response to inhala
reference pressure in chamber i5, the movable wall 12
tion.
will be centered and convolution 3d will seal the ends ¿il
In operation, when the pressures on the opposite sides
of the passages d@ and shut oiî the flow of iiuid to the
of the movable wall l2 in FIGURE 3 are balanced, the
enclosure.
ends 52 of the passageways d@ are occluded by the arcu
As noted above, the arcuate convolutions T29 and 301
ate convolution 29 and, simultaneously, the ends 41 of
the passages 4t) are occluded by the arcuate convolution 30 are made equal in area so that the forces of the high
3-0 of the diaphragm 24, the high pressure fluid in the
chamber 31 holding the convolutions in sealing engage
ment with the above noted ends 4l and 52. Inhalation
will produce a reduction in the pressure within the cham
ber ld and cause the movable Wall 12 to move down
wardly toward the chamber I4. As the movable wall
moves in the downwardly direction, the convolution 29
will continue to seal off the ends 52 of the passageways
5€) but the convolution 3€) will roll on the plate 22 and
uncover the ends 4l of the passages di). The breath
able gas will then ñow from the source through the
chamber 3l and passages 4% into chamber 14, and thence
through the conduit i6 to the point of use.
pressure inlet suppiy acting on the convolutions are
balanced.
I claim:
l. A fluid flow regulating device comprising: a body
having a ñrst chamber adapted for connection to a point
of huid demand and a second chamber adapted for con
nection to a reference pressure; a pressure responsive
movable wall in said body exposed on one side to the
pressure in said ñrst chamber and on the other side to
said reference pressure, said movable wall having ílexible
means secured to said body and forming a peripheral
Upon exhaiation, the exhalation products will be car
ried through conduit I6 to the chamber 14 and pressure
chamber disposed to be connected with a source of iluid
under pressure; passage means for conducting said fluid
under pressure to said first chamber, said flexible means
occluding said passage means under conditions of zero
in chamber 14 will increase causing the movable wall
I2 to move in the upwardly direction. When the pres
sures on opposite sides of the movable wall 12 are equal,
the ends 41 of the passages 40 will be occluded by the
convolution 3€? `and the ends 52 of the passageways 50
said passage means in response to a reduction in the pres
sure in said ñrst chamber below the pressure of said
reference pressure; and a valve member carried by and
normally closing an opening in said movable wall connect
will be occluded by the convolution 29, Thus during
this phase of operation there will be no flow through
either the passages ¿itl or the passageways 5t).
As the exhalation continues the pressure Within the
chamber 14 will continue to increase. When the pressure
within the chamber i4 exceeds the pressure of the am
bient ñuid in the chamber 15 the movable wall 12 will
be moved toward the chamber I5 and the convolution
demand, the ñexible means being disposed to unblock
ing said first chamber with said second chamber, said
valve member being movable toward an open position
when the pressure in said first chamber exceeds the refer
ence pressure.
2. A fluid flow regulating device comprising: a body
having a chamber adapted for connection to a point of
lluid demand; a pressure responsive movable wall forming
one side of said chamber, one side of said movable wall
being exposed to the pressure in said chamber, the other
side being exposed to the pressure of the surrounding
permit ñow of the exhalation products from the chamber 60 ñuid medium, `said movable wall having ñexible means
14 through the passageways 5i) into the chamber 15 and
secured to said body and forming a peripheral cham-ber
thence out into the surrounding fluid medium through
disposed to be connected with a source of fluid under
the openings 18.
pressure; passage means for conducting said fluid under
During this phase of the operation the convolution 30 f» pressure to said chamber, said flexible means occluding
will seal off the ends 4l of the passages 40 and prevent
said passage means under conditions of zero demand, the
flow of the pressurized gas therethrough. The inhala
ñexible means being disposed to unblock said passage
means in response to a reduction in the pressure in said
tion-exhalation cycle may then be repeated until the
chamber below the pressure of said surrounding ñuid
supply oi breathable gas is expended.
medium; and a valve member carried by and normally
FIGURE 4 shows a modiñcd form of the invention
closing an opening in said movable wall connecting said
embodied in a device such as a pressure regulator. In
chamber with the surrounding fluid medium, said valve
this form of the invention there is no exhalation valve
member
being movable toward an open position when the
and the chamber l5, rather than communicating with
pressure in said chamber exceeds the pressure of the sur
the ambient atmosphere through a plurality of holes dis
rounding ñuid medium.
_posed in the cap il, is connected with a regulated refer
29 will uncover the ends 52 of the passageways 50 to
5
3,070,108
3. A ytiuid flow regulating device comprising: a body
having a chamber adapted for connection to a point of
fluid demand; a pressure responsive movable wall forming
one side of said chamber, one side of said movable wall
being exposed to the pressure in said chamber, the `other
side being exposed to the pressure of the surrounding
iluid medium, said movable wall having flexible means
secured to said body and forming a peripheral chamber
disposed to be connected with a source of liuid under
pressure; a plurality of passages disposed in said movable
wall for conducting said iluid under pressure to »said cham
ber, said ñexible means occluding one end of said passages
under conditions of zero demand, the flexible means being
disposed `to unblock said passages in response to a reduc
tion in the pressure in said chamber below the pressure of
said surrounding ñuid medium; and a valve member
carried by and normally closing an opening in said mov
able wall connecting said chamber with the surrounding
ñuid medium, said valve member being movable toward
an open position when the pressure in said chamber ex
6
nection with a reference pressure; a pressure responsive
movable wall separating said chambers and operating in
response to changes in the differential of pressures in said
chambers, said movable wall having a rigid central por
tion and ñexible means secured to said body and forming
a peripheral chamber disposed to be connected with a
source of fluid under pressure; and a plurality of passages
disposed in the rigid central portion of said movable wall
for conducting said huid under pressure to said iirst cham
ber, said ilexible means occluding said passages under con
ditions of zero demand, the said ñexible means being dis
posed to unblock said passages in response to a reduction
in the pressure in said first chamber below the reference
pressure in said second chamber.
7. A fluid flow regulating device comprising: a body
having a iirst chamber adapted for connection to a point
of fluid demand and a second chamber adapted for con
nection with a reference pressure; a pressure responsive
movable wall separating said chambers and operating in
20 response to changes in the di?ferential of pressures in said
ceeds the pressure of the surrounding ñuid medium.
chambers, said movable wall having a rigid central portion
4. A tluid flow regulating device comprising: a body
and a pair of flexible annular members having oppositely
having a chamber adapted for connection to a point of
disposed convoluted portions, said tlexible members being
lluid demand; a pressure responsive movable wall forming
to said body and forming a peripheral chamber
one side of said chamber, said movable wall having a rigid 25 secured
disposed to be connected with a source of iluid under
central portion and a pair of flexible member forming a
pressure, the convoluted portions being equal in area and
peripheral chamber secured to said »body and disposed to
arranged so that the forces of the iluid in the peripheral
be connected with a source of iiuid under pressure, the
chamber are balanced; and a plurality of passages dis
movable wall being exposed on one side to the pressure
posed in the rigid central portion of said movable wall for
in said chamber and on the `other side to the pressure of 30
conducting said fluid under pressure to said ñrst cham
the surrounding ñuid medium; a plurality of passages dis
ber, said convoluted portions occluding said passages under
posed in the rigid central portion of said movable wall for
conditions of zero demand, the said convoluted portions
conducting said fluid under pressure to said chamber,
being disposed to unblock said passages in response to a
one of said flexible members occluding one end of said
reduction in the pressure in said first chamber below the
passages under conditions of zero demand, the said one 35 reference pressure in said second chamber.
flexible member being disposed to unblock said passages
in response to a reduction in the pressure in said chamber
below the pressure of said surrounding iluid medium; and
8. A Huid ilow regulating device comprising: a body
having a chamber adapted for connection to a point of
fluid demand; a pressure responsive movable Wall form
lng one side of said chamber, one side of said movable
ing in said movable wall connecting said chamber with 40 Wall
being exposed to the pressure in said chamber, the
the surrounding ñuid medium, said valve member being
cther side being exposed to the pressure of the surround
a valve member carried by and normally closing an open
movable toward an open position when the pressure in
said chamber exceeds the pressure of the surrounding
Huid medium.
lng medium; and passage means in said movable wall for
connecting said chamber with a source of high pressure
Íluid, said movable wall including flexible means co-acting
5. A iiuid flow regulating device comprising: a body 45 with said passage means for controlling flow of fluid from
having a chamber adapted for connection to a point of
said high pressure source to said chamber, said flexible
means having oppositely disposed convoluted portions
ñuid demand; a pressure responsive movable wall forming
proportioned and arranged so that the forces created by
one side of said chamber, one side of said movable wall
the high pressure iluid are balanced.
being exposed to the pressure in said chamber, the other
9. A fluid flow regulating device comprising: a body
side -being exposed to the pressure of the surrounding iluid 50
having a ñrst chamber adapted for connection to a point
medium, said movable wall having a rigid central portion
of Íluid demand and a second chamber adapted for con
and a pair of tlexible annular members having oppositely
nection with a reference pressure; a pressure responsive
disposed convoluted portions secured to said body and
forming a peripheral chamber disposed to be connected 55 movable wall separating said chambers and modulating
in response to changes in the differential of pressures in
with a source of fluid under pressure, the convoluted por
said chambers; íirst passage means in said movable Wall
tions of said flexible members being equal in area and
for connecting said first chamber with a source of high
arranged so that the forces of the fluid in the peripheral
pressure Huid; second passage means in said movable wall
chamber are balanced; a plurality of passages disposed in
the rigid central portion of said movable wall for conduct 60 for connecting said ñrst chamber with said second cham
ber; and occluding means including flexible rolling dia
ing said ñuid under pressure to said chamber, one of said
phragms disposed between said movable -wall and said
flexible members occluding one end of said passages under
body and arranged to control ñow of fluid through said
conditions of zero demand, the said one ñexible member
ñrst and said second passage means.
being disposed to unblock said passages in response to a
10. A ñuid flow regulating device comprising: a body
reduction in the pressure in said chamber below the pres 65
having a ñrst chamber adapted for connection to a point
sure of the surrounding ñuid medium, and a valve member
of fluid demand and a second chamber adapted for con
carried by and normally closing an opening in said mov
nection
with a reference pressure; a pressure responsive
able wall connecting said chamber with the surrounding
tluid medium, said valve member being movable toward
movable Wall separating said chambers and responsive to
ceeds the pressure of the surrounding ñuid medium.
6. A ñuid flow regulating device comprising: a body
having a iirst chamber adapted for connection to a point
first passage means in said movable Wall for connecting
said first chamber with a source of high pressure fluid;
second passage means in said movable wall -for connect
an open position when the pressure in said chamber ex 70 changes in the differential of pressures in said chambers;
of ñuid demand and a second chamber adapted for con
ing said first chamber with said second chamber; and
75 occluding means including flexible rolling diaphragms dis
3,070,108
posed between said movable Wall and said body and ar
ranged to control flow of fluid through said first and
second passage means, said rolling diaphragms having con
volutions forming a chamber disposed to be connected
with said source of high pressure fluid, said convolutions
being proportioned and arranged so that the forces cre
ated by said high pressure Huid are balanced.
8
References Cited in the ñle of this patent
UNITED STATES PATENTS
2,121,312
2,490,113
*2,663,121
2,679,863
Bicknell ____________ __ June 21,
Champbell __________ _„ Dec. 6,
Ramsey ____________ _„ Dec. 22,
Tucker ______________ __ June 1,
1938
1949
1953
1954
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