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Патент USA US2135582

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Nov. s, 1938
'
c, J_ KOHLER
2,135,582
VACUUM BREAKER
Filed Dec. 50, 1956
4
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2 Sheets-Sheet 1
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i
IN VEN TOR.
C1313b J-KUHL ER
NOV. 8, 1938.
c_ J, KOHLER
2,135,582
VACUUM BREAKER
Filed Dec. 30, 1936
2 Sheets-Sheet 2
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INVENTOR.
H8433 jfééw
JK
4TTOR
Patented N... s, 1938
2,135,582
UNITED STATES PATENT
OFFICE
2,135,582
VACUUM BREAKER
Carl J. Kohler, Kohler, Wis.
_
Application December 30, 1936, Serial No. 118,252
v14 Claims. (Cl. 137-111)
My invention relates to improvements in vac
uum breakers of a type adaptable for use in con
- nection with plumbing ?xtures such as ?ush
tanks,-closet bowls, etc.
Considerable attention has lately been directed
to the fact that a vacuum in the supply line of
a plumbing ?xture, such as may be created by
shutting off or lowering the water pressure there
in, has a tendency to create a back-syphon, sy
10 phoning the liquid content of the ?xture into
the supply line and contaminating it. Since the
- supply line ordinarily also supplies drinking wa
ter, this contamination is a serious matter, and
modern plumbing codes require that ?xtures be
15 equipped with some means to prevent back-sy
phonage.
It is the object of my invention to provide
means which will positively prevent back-sy
phonage.
20
‘
It is a further object. of my invention to pro
vide such a means which is not dependent upon
pressure through said body member without the
liquid occupying the center portion or core of
the body member, which may be left open to the
atmosphere.
It is impossible to back syphon
such an arrangement, since any vacuum in the 5
supply line will be immediately broken by the
admission of air through the center of the body
member.
.
'
,
‘
Passing now 'to the speci?c embodiment oi’ the
principle and particularly that illustrated in
Figures 1 to 4 of the drawings, the vacuum
breaker is shown interposed between the water
closet bowl I and the ?ush valve 2, it being
understood, however, that the device is not lim
ited to such use, as it may be used in connection
with a ?ush tank or any other source of supply
to any type oi’ plumbing ?xture or in any other
type of liquid connection where the prevention
of back syphonage is desirable.
The vacuum breaker proper comprises a tu
bular body portion 3 provided with the liquid
moving parts for its operation but utilizes the‘ supply pipe 4 which has communication with
centrifugal force of the water for this purpose.
the interior 01' said body through the port 5. As
Other objects will be apparent from the dis
is shown in Figure 4, the port 5 enters the body
closure herein.
3 in a direction substantially tangential to the
I attain these objects by the mechanism illus
circumference of the body.
trated in the accompanying drawings, in which
Thus liquid enters the body through‘ the port
Figure 1 is a side view, partly in section, of the
vacuum breaker connected to a ?ush ‘valve and '
30 water closet bowl; ~Fig. 2, a horizontal section
thereof taken along the lines 2-2 of Fig. 1;
Figures 3 and 4, semi—diagrammatic views there
of showing the direction of liquid travel; Fig. 5,
,a side view, partly in section, showing a di?er
35 ent arrangement of the supply and discharge
connections; Fig. 6, a‘ sectional view thereof taken
along the lines 6-—6 of Fig.5; Figs. 7, 8 and 9,
side views, partly in section, showing other ar
rangements of the supply and discharge connec
40 tions; and Fig. 10, a sectional view of the form
shown in Fig. 9, taken along the lines iii-i0 of
Fig. 9.
The invention is capable of embodiment in
many varied .structures. ‘However, the general
45 principle of all is similar, namely, the liquid in
troduced into a substantially tangential direc
tion will be given a rotary or helical movement
and, by vcentrifugal force, tends to adhere to the
walls of the receptacle leaving an air space or
50 vortex in the center thereof.
I have discovered
that by supplying and withdrawing the liquid
in a direction tangential to a tubular body mem
ber and by a correct proportioning oi the size
of the inlet and outlet connections to tubular
body member it is possible to pass liquid under
5 in a direction tangential to the body, which
gives the liquid a rotary or whirling motion, caus
ing it to ascend the body in a spiral or helical
path as shown by the dotted line of Figure 3.
The port 5 may also, if desired, be arranged so‘
as to discharge somewhat upwardly to aid the
helical ?ow instead of depending on the displace
ment of the liquid in the body by that entering
the body to cause the upward movement.
The body 3 is provided with a partition or top
6 which extends partially across the body and
is adapted to divert the stream of liquid down
wardly as shown by the dotted line 01' Figure 3.
I prefer to'provide an inner sleeve ‘I adapted
to receive the downward flow of the liquid and
to guide it downwardly as shown by the arrowed
line of Figure 4,“ the liquid still retaining its
whirling or‘ helical motion. _
The partition 6 is apertured at I and the ap
erture is preterably'provided with a tube 0 which
provides communication between the interior oi’
the body and the atmosphere.‘
The device may also be provided with the orna~ 60
mental cap‘ II.
,
’
v
The liquid entering the port I passes upwardly
with a spiral or helical motion along the body
3 and then downwardly, still retaining its helical
motion, along the sleeve 1. The centrifugal force
PP
8,185,582
2
communication between the center portion of the
created by the helical movement causes the liq
uid to adhere to the walls of the sleeve 1 leaving
an open center or core open to the atmosphere
as shown by the dotted line of Figure 4. ~ It is
impossible for a vacuumranywhere in the line
to draw liquid through the apparatus, since, in
' ‘ such a case, air would be drawn through the
aperture 8 to break the vacuum.
_
Thus a positive means of preventing back-sy
10 phoning is provided, which means is not depend
body and the exterior atmosphere.
4. In a vacuum breaker, the combination of a
tubular body, a liquid supply connection thereto,
means for causing liquid entering said body to
assume a helical motion, the proportion between
said supply pipe and said.'body being such that
liquid entering the b'ody and held against the . Y
walls thereof by centrifugal force does not occupy
the center portion of said body, and means for 10
ent upon any check valves or other moving parts
which are impositive in action due to their tend
providing communication between said center
portion and the exterior atmosphere.
- ency to stick or. bind, due to corrosion andother
tubular body, a liquid supply pipe thereto, a port
'15
5. In a vacuum breaker, the combination of a
15
The construction shown in Figures 5 and 6 is - adapted to provide communication between said
supply
pipe
and
said
body
and
entering
said
body
similar to that described except that the body
causes.
_
Y
> 3 is provided with a bottom. I I, which is spiral , in a direction substantially tangential thereto,
or helically shaped to aid the helical flow of liquid. a top on said body, a tubular sleeve positioned
Or the supply pipe 4 may enter the body 3 at within said body and spaced apart therefrom and ‘ 20
from said top,‘ and an aperture in said top
20 its top, as shown inFigure "I, the liquid passing
and discharging downwardly.
-
adapted to provide communication between said
'
If desired, the body 3 may be provided with
spiral or helical bands II, as shown in Figure 8,
sleeve and the exterior atmosphere.
6. In a vacuum breaker, the combination of a
tubular body, a ?uid supply pipe communicating
with
said body in a direction substantially tangen 25
25 In the construction shown in Figures 9 and 10
,.tial
thereto,
an aperture in said body adapted to
the sleeve 1 is not provided, the liquid discharg
ing through the discharge pipe it which, like the provide communication between said body and
the exterior atmosphere, and a discharge pipe
supply pipe 4, is positioned substantially tangen
communicating
with said body in a direction sub 30
tial to the body 3.
.
stantially tangential thereto.
80
Ihave found that where the discharge is di
'7. In a vacuum breaker, the combination of a
rectly into a chamber in which a back pressure
may develop, such ‘as the closet bowl shown in tubular'body, a liquid supply pipe thereto, means
Figure 1, there is a tendency for the liquid to rise associated with said body for imparting a helical
in the discharge tube and interfere with the motion to liquid entering said body from said
supply pipe, and an aperture in said- body adapted
action of the device.
. _
Therefore. I prefer to provide the discharge to provide communication between the central
portion of the interior of said body and the ex
pipe ll witha closure plate I! adapted to com
pletely close the end of said discharge pipe and terior - atmosphere.
8. In a vacuum breaker, the combination of a
to provide the discharge pipe I‘ with a series of
tubular body, a liquid supply thereto, a port 40
peripherally
located
discharge
apertures
ll
8.
This
40
construction obviates the tendency of the liquid adapted to provide communication between said
to rise in the discharge pipe. since the pressure supply and said body and entering said body in a
of the liquid passing through the apertures I6 direction substantially tangential thereto, an ap
erture in said body adapted to provide communi
is sui?'cient to overcome any back pressure.
45
It will be understood that the speci?c embodi-' ' cation between the central portion of the interior
45
of
said
body
and
the
exterior
atmosphere,
a
dis
ments herein disclosed are for the purpose or
illustration only and that the invention is not charge pipe having communication with said body
to aid the helical flow of liquid,
'
‘ limited to the speci?c details disclosed, but only
by the scope of the appended claims. ,
‘
60 \ I claim:
1. In a vacuum- breaker, the combination of a
tubular body, a liquid supply pipe thereto, a port
adapted to provide commlmication between said
supply pipe and said body and‘ entering said body
in a direction substantially tangential thereto,
and an aperture positioned in the central portion
of said'body and adapted to provide communica
tion ‘between the interior of said body and the
exterior atmosphere.
'
2. In a vacuum breaker, the combination of a ‘
tubular body, a liquid supply pipe thereto, a port
adapted to provide communication between said
supply pipe and said body and entering said body
in a direction substantially. tangential thereto,
65 the proportion between said port and said body
being such that liquid entering said body from
said port and held by centrifugal force against
. the walls of said body does not occupy the center
portion of said body, and means for providing
70 communication between said center portion and
and provided near its extremity with a plurality
of peripherally located discharge apertures, and
a closure adapted to close the end of said dis
charge pipe.
.
,
9. In a vacuum breaker, the combination of a
tubular body, a liquid supply thereto, means for
imparting a helical motion to liquid entering said
body from said supply, an aperture. adapted tov 55
provide communication between the central por
tion of the interior of said body and the exterior
atmosphere, a discharge pipe having communica
tion with said body and provided near its dis
charge extremity with a plurality of peripherally 60
located discharge apertures, and a closure adapt
ed to close the discharge end of said discharge‘
Pipe.
-
10. In a vacuum breaker, the combination of a
tubular body, a liquid supply- thereto, a port
adapted to provide communication between said
supply and said body and entering said body in':
a; direction substantially tangential thereto, a._
top on said. body, a tubular sleeve positioned
within said body .and spaced apart therefrom and
from said top, an aperture in said top adapted to
3. In a vacuum breaker,.the combination of a ' provide‘ communication between said sleeve and
tubular body, a liquid supply connection thereto, the exterior atmosphere, a discharge pipe hav
means for causing liquid entering said body to ing communication with said body and provided
the exterior atmosphere.
78
50
-
,
assume a rotary motion, and means for providing ' near its discharge extremityv with a plurality of
65
8,135,588
peripherally located discharge apertures, and a
closure adapted to close the discharge end of said
discharge pipe.
11. In a vacuum breaker, the combination of a
tubular body, a liquid supply connection thereto,
means for causing liquid entering said body from
said connection to assume a rotary motion, and
a tube positioned in the center portion of said
body and de?ning an unobstructed passageway
between the central portion of the interior of
said body, and the external atmosphere.
12. In a vacuum breaker, the combination of a
tubular body, a liquid supply connection discharg
ing into said body in a direction upwardly there
of and tangential thereto and an aperture in said
body adapted to provide communication between
the central portion of the interior of said body
and the exterior atmosphere.
13. In a vacuum breaker, the combination or a
tubular body, a liquid supply pipe thereto, a port
'3
adapted to provide communication between said
supply pipe and said body and entering said body
in a direction substantially tangential thereto
whereby liquid entering said body is directed up
wardly in a spiral motion, an inner sleeve position
in said body and spaced therefrom, means for di
recting the ?ow of liquid downwardly into said
sleeve and means for providing communication
between the interior of said sleeve and the exte
rior atmosphere.
10
14. In a vacuum breaker, the combination of a
tubular body, a liquid supply pipe thereto, means
for causing liquid entering said body from said
supply pipe to assume a spiral motion and to
travel upwardly in ‘said body, an inner sleeve posi 15
tioned in said body, means for directing the flow
of liquid downwardly into said sleeve and means
for providing communication between the interior
01' said sleeve and the exterior atmosphere.
CARL J. KOHLER; 20
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