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Патент USA US2131743

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mm 4, was.
M.
LOUGHRIDGE'
VENTURI S‘IPHON
Filed Dec.. 3, 1984
2,331,743
2 Sheets-Sheet 1
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ATTORNEY.
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M H, LOUGHRHDGE
’ 2,131,743
VENTLIRI S IPHON
Filed Dec. 5, 1934
V
2 Sheets-Sheet?
INV NTOR.
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ATTORNEY.
Patented Oct. 4, 1938
2,131,743 '
' UNITED STATES
PATENT-OFFICE
2,131,743’
, , VENTURI SIPHON
Matthew H. Loughridge, Bogota, N. J. ‘
Application December 3, 1934, Serial No. 755,841
28 Claims
This invention relates to a Venturi siphon and
plumbing ?xtures that are used to accomplish the
is a combination of the siphon and Venturi which
admits of a variety of applications and’ has a
number of important uses. The invention com,
same results.
prises applying’ a Venturi to an ordinary siphon
to start the siphon.
means that the siphon
raising liquids‘by pressure. In this speci?cation, _
is started by an air blast instead of by suction
, ‘and its operation is readily controlled. In the
aspirated siphom-a tube is applied near the lower
in end of the siphon‘ through‘ which the air is .ex
hausted by suction after the discharge ori?ce is
~
>
The term “siphon” is somewhat loosely used
in the mechanical arts to apply to system for
it refers‘ to the siphon action of transferring liq.
uids from a higher to a lower level. The term
“Venturi’_’ is used herein in a generic sense, having
reference to a nozzle in which the ?ow of a fluid
causes a sub-normal pressure in a connecting 10
pipe.‘
’
>
closed. If the suction is obtained by'the. mouth , 1 The invention will be more particularly under
stood from the following speci?cation and the
, there is ‘danger of the liquid ‘passing into. the
accompanying drawings showing the Venturi si
mouth and if the liquid itself is . dangerous a
special stopper must be provided for the discharge
ori?ce when starting the siphon. In the present
invention the siphon is started by blowing instead
of by suction so that the liquid cannot be diverted
into improperychannels, and the discharge follows
‘ 20 the air blast. The ve‘nturimay be applied at the
discharge end of the siphon ‘and by its action, it
phon ‘and a variety of applications thereof, in 1.5
which:
1
‘
‘
.
‘
Fig. 1 is a general application of the Venturi
siphon with a float cont-r01 valve; Fig. 2 is a cross
section of the Venturi at the discharge end of the
siphon, and Fig. 3 is a cross-section of one form 20
of control ori?ce of the siphon.
,
Fig. llis another form of the siphon self con;
liquid establishes the siphon which continues un- V trolled through a time interval, and Fig. 5 is an
removes or reduces the air in the siphon until the
til it is interrupted.
25
application of ‘the siphon controlled by the tem
,
The siphon can .be started from any source of
?uid, pressure, preferably .air, and by controlling
‘the application ‘of this air, the Siphon is con‘
trolled.“ In the smaller sized instruments ‘the air
blast may be obtained ‘from a bulb, or from a hand
30 pump. In, larger installations, the fluid pressure
may be obtained from a pressure source and this
source may be electrically controlled for the pur
pose of starting the siphon ‘in any predetermined.
manner.
After the siphon is started it may be
35 arranged by its operation to discontinue the start.
ing fluid pressure.
.
'
.
,
The siphon may be interrupted by admitting
air to the siphon pipe above the level of the liquid
in the delivery tank. By suitably controlling this
40 orifice by a valve the system'may be arranged for
automatic operation in the transference of liq
‘uids. One method of controlling the siphon ‘is by
a float valve, another is by the time of operation
' and another is by the temperature of the fluid
45 in the delivery or receiving tank.
The Venturi siphon maybe used in a laboratory
for ordinary siphon purposes, it may be ‘used ‘in
the. homes for ‘dispensing liquids. such as milk
50 without pouring, it may be used on farms for a,
variety of purposes and it may be used in in;
dustries where liquids are to be transferred from‘
,a higher to a lower level. The siphon itself has
perature of the liquid ?owing in the siphon.
25 1
In the drawings, l l is the delivery tank which
is placed ata higher level than the receiving tank
l6, and with which it is connected by the siphon
tube M, which is bent at I3 and has the receiv
ing end l2 dipping into the tank H. The lower 30
end of'the siphon is connected with the Venturi
I5 which has the discharge ori?ce 2i.
,
The Venturi may be constructedas shown in
2 with the siphon I4 connected at its throat
38 so that an air blast applied at the upper end 35
20 exhausts the air in siphon‘ M sufficiently to
start the siphon, which once‘started, continues
until interrupted. The air blast may be supplied
through pipe [9 from the pump ll operated by
the handle H3. The force-necessary to start the 40
siphon depends upon the extent of the “lift” nec-
‘
,essary'to bring the liquid over the bend of the
siphon.
Where this distance is short a single
operation of the pump will start the siphon, but
as the lift increases more pumping is necessary. 45
The siphon may be interrupted or broken by
admitting air to the‘siphon tube above the level
of the liquid in the delivery» tank. An ori?ce for
the purpose is provided in the tube at 35 and a
rubber hose 33 may be connected with this ori?ce ‘5,0
and controlled by the valve 32 to. determine the
M
operation of the siphon. In‘ Fig. 1 the device is
applied to ?lling the water bottle IB from reser
no moving parts, “it is easily installed and‘ re. voir II. This bottle has _a narrow neck to which
55 placed and is
less expensive than the usual ‘the metal cover 22 is clamped.’ This cover sup- s5
2
2,131,743
ports the venturi l5 and the tube 23 through
which the plunger 24 of the float 25 extends. The
collar 28 limits the downward movement of plung
er 24. This plunger moves in a guide 21 secured
to the frame 26 and as it is raised by the liquid in
I6, its upper end engages the lever 29, which
is pivoted at 30 to 26 and carries the valve 32
at its lower end which is normally held in en
gagement with the rubber tube 33, located in
10 socket 34, by the flat spring 3|. As soon as valve
32 is slightly opened, the air rushes in to the
siphon tube at 35 which results in breaking th
siphon.
-
'
16, the resistance of the diaphragm ‘l4 and the
rate of ?ow of the liquid through the venturi.
The valve 13 is mounted on the upper end, or air
intake end of the nozzle. The valve 32 is unseat
ed only when the siphon is to be stopped and
makes one operation for each operation of the
siphon.
The venturi in Fig. 5 starts and stops according
to predetermined temperatures of the liquid in
tank I6. When the temperature of the liquid
reaches a predetermined value the thermostatic
bulb 19, through connection 80, operates a switch
8|, controlling the circuit of the electro-pneu
matic valve 82 through wires 84 and battery 83.
This connects the ?uid pressure of tank 85, 15
through pipe 86 to pipe Hi to start the venturi
15. This transfers a colder liquid from tank II
to tank l6 and when the temperature is reduced
to a predetermined extent, the thermostatic bulb
18, through connection 11, reduces the pressure 20
It has been found in practice that if the ori
15 ?ce of tube 33 is below the discharge end of the
siphon, there is a tendency for the liquid to flow
through this tube in which case the siphon is
not interrupted until the liquid in tube I4 is suf
?ciently drawn to provide an air space in this
20 tube. This condition is largely avoided by mak
ing the ori?ce of valve 32 above the discharge end
of the siphon. As the siphon operates it draws
the air out of tube 33 so that there is a partial
vacuum in this tube which is easily destroyed
when valve 32 opens. To facilitate drawing the
air out of tube 33, the connection to the siphon
M is preferably through a venturi at 36, which
may be constructed as indicated in Fig. 3 with
the throat at 3'! connecting with 35. It will be
30 noted that the siphon is started and stopped
pneumatically and comparatively little effort is
needed to open valvev 32 and stop the siphon.
The Venturi nozzle in Fig. 3 is of the usual
construction witha narrow neck surrounded by
With certain types of Venturi nozzles it has
been found that the most satisfactory operation
an annular space which connects with the air
hose 33. The narrow neck causes an increase in
is obtained by a relative large volume at moder
ate pressure for the air blast. The higher the lift
velocity of the liquid ?ow through the siphon tube
at this point. This increase in velocity draws the
in chamber 16 and opens valve 32 to stop the
siphon.
Thermostatic bulbs of the type shown at 18
and 19 are well known in the refrigerating art.
The arrangement illustrated shows the tank II
transferring a colder liquid to tank It to cool
this tank. If the operation is to be reversed so
that the liquid transferred to IE heats this tank
to a predetermined extent, then the .position of
valve 32 is reversed so that it will open pipe 33 30
when the pressure in 16 is ‘increased to an extent
corresponding with the controlling temperature.
at the receiving end of the siphon, the greater
the energy necessary to start the siphon.
The venturi may be constructed in a variety of
air from tube 33 and creates a partial vacuum
40 therein. This vacuum is easily destroyed by a
forms for the purpose of this invention and dif- ‘
60 the siphon tends to draw air into the venturi at
the upper end 20 and this effect is used to con
4. A siphon with a venturi, means for starting
the siphon by said venturi and means controlled (10
slight opening of the control valve 32, which ad
ferent liquids may be transferred thereby. Any
mits atmospheric pressure to the annular cham
theory of operation expressed herein may be sub
ber surrounding the nozzle at 36 and immediately , ject to modi?cation in the light of later knowl
interrupts the siphon. It is desirable to make edge.
the air hose 33 as small as possible so that it
Having thus described my invention, I claim:
can easily be exhausted with the siphon tube
1. A siphon with a venturi, means for starting
when starting the siphon, but the prompt inter
the siphon by the venturi and means operated by
ruption of the siphon by a small air line requires the flow of liquid through the venturi from the
a Venturi nozzle at the siphon trap. In the
siphon for controlling the siphon.
measuring of the ?ow of liquids to which this
A siphon with a venturi, means for starting
invention is applied, prompt interruption of the the2. siphon
by the venturi and means controlled
siphon is necessary.
a partial vacuum established by the flow of
The Venturi siphon in Fig. 4 regulates itself by
liquid through the venturi for stopping the siphon.
for operation during a predetermined time in
3. A siphon with a venturi, means for starting
terval, or during a predetermined ?ow of the liq
the
siphon by said venturi, electrical means con
uid. This comprises the stand 10 supporting the
pump I‘! and the receiving container I6 and also trolling said starting means and means for auto
the upstanding member ‘I I, having the cleats for matically bringing the electrical means into oper
clamping the venturi I5 at 72., The operation of ation.
trol the siphon. The housing 13 with the dia
phragm T4 is mounted on top of the venturi and
the valve 32 is attached to the diaphragm 14
65 which is subject to atmospheric air pressure on
the top through the aperture 15. The air tube 19
from pump I'l connects to chamber 16 below the
diaphragm and connects to the venturi. Air
pressure from pump l1 holds valve 32 closed
70 while it starts the venturi. . When the siphon is
operating, it draws the air from ‘chamber 16 and
pipe l9 and when 16 is su?iciently exhausted the
air pressure above diaphragm 74 opens valve 32
and stops the siphon. The time necessary to ac
75 complish this depends upon the size of chamber
by temperature for controlling said siphon.
5. In a siphon system, a delivery tank, a re
ceiving tank, a siphon connecting said tanks,
means for starting said siphon and means re
sponsive to the temperature of the liquid in one
of said tanks controlling the operation, of said
siphon.
6. In a siphon system, a delivery tank, a re
ceiving tank, a siphon connecting said tanks, and
means controlled by the temperature of the liquid
flowing through said siphon for starting and for
stopping said siphon.
7. In a siphon system, a siphon tube having a
delivery nozzle and a controlling nozzle, an air
valve connected with said controlling nozzle for 75
3
2,131,743
stopping the siphon and means operated by air
from said cover member into said bottle for oper
pressure for opening said air valve.
ating said controlling device by the level of the
liquid in said bottle.
, 8. In a siphon system,‘a siphon tube having a
delivery nozzle and a controlling nozzle, an air
valve connected with said controlling nozzle for
stopping the siphon and a diaphragm operatively
connected with said delivery nozzle for operating
said valve.
9. An article of manufacture comprising a
10 nozzle having an air passage therethrough and
having a side connection to said passage for the
?ow of a liquid, the liquid being deflected to
Wards one end of the nozzle and a diaphragm
connected with the opposite end of the nozzle to
.15 be operated by the?ow of liquid through the
nozzle.
10. In a siphon system, a siphon tube having a
delivery nozzle with a diaphragm connected with
one end of said nozzle to be a?ected' by the ?ow
20 of liquid through said nozzle and means con
trolling the operation of said siphon operatively
connected with said diaphragm.
11. In a siphon system, a siphon tube having a
controlling nozzle, an air valve connected with
controlling nozzle, a chamber having a. dia
.25 said
phragm controlling said air valve and means as
‘ sociated with ?uid pressure connected with said
chamber.
12. In a siphon system, a siphon tube having a
30 controlling nozzle, an air valve connected with
said controlling nozzle and a thermostat control
ling said air valve.
.
13. A siphon system comprising a siphon tube,
a Venturi nozzle at the discharge end of said tube,
a controlling nozzle in said siphon, a valve for
35
said controlling nozzle, 2. ?oat having a stem for
operating said valve, a receiving tank, said ?oat
being located in said receiving tank, and a com
bined support for said Venturi nozzle, valve and
stem detachably secured’ to said receiving tank.
40
14. A siphon system comprising a siphon tube,
a discharge tank and a receiving tank connected
_ by said tube, a controlling nozzle in said siphon,
an air ‘valve for said controlling nozzle, a ?oat
operating said valve and a frame secured to
4.5 for
said receiving tank for supporting said valve and
50
phragm operatively connected with said delivery
nozzle and operating said controlling nozzle, an
air chamber enclosed by said diaphragm; and
means for exhausting air from said chamber by
the ?ow of liquid through said delivery nozzle. 10
19. In a siphon system, a siphon tube having a
delivery nozzle and a controlling nozzle, a dia
phragm operatively connected with said delivery
nozzle and operating said controlling nozzle, and
means for operating said diaphragm after a time 15
interval by the ?ow of liquid through said de
livery nozzle.
20. In a siphon system, a siphon tube having a
delivery nozzle and a controlling nozzle having
a valve, a diaphragm operatively connected with 20
said delivery nozzle and controlling said valve and
means for applying air pressure below said dia
phragm to start the siphon and to hold the valve
closed.
21. In a siphon system, a siphon tube having a 25
Venturi nozzle for starting the siphon, an air
supply connected with said nozzle, a valve con
trolling said air supply and a pressure‘ bulb for
operating said valve.
22. In a siphon system, a siphon tube, a nozzle 30
for admitting air to said tube for stopping the
siphon, a valve controlling said nozzle and a
pressure bulb for operating said valve.
23. In a siphon-system, a siphon tube, a Venturi
nozzle for controlling said siphon, a source of 35
pressure ?uid supply for operating said nozzle and
an electric circuit controlling said pressure ?uid
supply.
24. In a siphon system, a siphon tube, a Venturi
nozzle for controlling said siphon, a source of 40
pressure ?uid supply for operating the nozzle, a
valve controlling said pressure ?uid supply, a cir
cuit controlling said valve and means responsive
to temperature change controlling said circuit.
25. In a siphon system, a siphon tube, a Venturi 45
?oat in operative relation to each other and in
nozzle for controlling said siphon, a diaphragm
controlling said nozzle and a pressure bulb for
dependently of said nozzle.
controlling said diaphragm.
15. The combination, a liquid delivery tank, a
receiver tank, a siphon with a venturi for starting
the siphon, connecting said tanks, a second ven
turi on said siphon, an air valve mounted on said
turi nozzle for controlling said siphon, a dia 50
phragm controlling said nozzle and a pressure
receiver tank and operated by the liquid level in
said receiver tank and an air hose connecting said
valve with said second venturi to control the
55 operation of the siphon.
16. The combination, a siphon with a venturi
for starting the siphon and having a vent ori?ce
above the liquid level of the delivery tank in which
60 the siphon is placed, said ori?ce connecting to a
nozzle with an annular air space in the siphon,
a valve, an air hose connecting said valve with
‘said vent ori?ce and means for operating said
valve to control the operation of said siphon.
65
18. In a siphon system, a siphon tube having a
delivery nozzle and a controlling nozzle, a dia
17. The combination, a bottle with a narrow
neck, a cover member arranged to clasp‘ on said
neck, a ?lling tube secured to said member for
?lling the bottle, a controlling device mounted
on said member for controlling the flow of liquid
through said ?lling tube and means extending
26. In a siphon system, a siphon tube, a Ven
bulb operated by temperature change controlling
said diaphragm.
27. A- siphon system comprising a siphon tube,
a discharge tank and a receiving tank connected 55
by said tube, a controlling nozzle in said siphon,
a valve controlling said nozzle and a device in
the receiving tank responsive to the character
istic of the liquid in the receiving tank controlling
60
the operation of said valve.
28. An article of manufacture comprising a
siphon with a nozzle having an air passage there
.through and having a side connection to said
passage for the ?ow of a liquid, the liquid being
de?ected towards the lower end of the nozzle, a
valve connected to the upper end of the nozzle,
said valve being operated by the passage of ?uid
through said nozzle and controlling the passage
of ?uid through said nozzle. .
MATTHEW H. LOUGHRIDGE.
70
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