U.S. patent number 3,902,636 [Application Number 05/443,398] was granted by the patent office on 1975-09-02 for beverage dispensing unit.
Invention is credited to Carl S. Zilk.
United States Patent |
3,902,636 |
Zilk |
September 2, 1975 |
Beverage dispensing unit
Abstract
A beverage dispensing assembly in which a manifold is mounted on
the rear surface of a panel, the manifold having first and second
inlets adapted to be connected to a source of liquids to be
dispensed and first and second female output ports which are
arranged to receive corresponding male inlet projections which are
located on a flow control valve assembly which can be removably
mounted on the front surface of the panel. Disposed between the
inlets and the female output ports are spring biased valve seats
which are normally urged to the closed position by internal
springs. When the male projections of the flow control valve are
inserted into the output ports of the manifold, the valve seats are
displaced to an open or liquid-passing position. This permits the
passage of liquids to the "flow control" valve assembly and from
there, through a faucet under control of a manually or electrically
operated control valve in the flow control valve assembly.
Inventors: |
Zilk; Carl S. (Portland,
OR) |
Family
ID: |
26957131 |
Appl.
No.: |
05/443,398 |
Filed: |
February 19, 1974 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
Issue Date |
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274872 |
Jul 25, 1972 |
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Current U.S.
Class: |
222/129.1;
137/607 |
Current CPC
Class: |
B67D
1/0082 (20130101); Y10T 137/87692 (20150401) |
Current International
Class: |
B67D
1/00 (20060101); B67d 005/56 () |
Field of
Search: |
;222/129,129.1,129.2,129.3,129.4,135,136,145,153
;137/329.1,329.2,329.3,329.4,594,604,607,608,609,614,614.2,614.3,614.19 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Reeves; Robert B.
Assistant Examiner: Martin; Larry
Attorney, Agent or Firm: Haugen; Orrin M.
Parent Case Text
CROSS-REFERENCE TO RELATED APPLICATION
This is a continuation of application Ser. No. 274,872, filed July
25, 1972 now abandoned.
Claims
I claim:
1. In beverage dispensing apparatus of the type wherein a flavoring
syrup and a fluid to be mixed therewith are applied under pressure
to a pair of inlets and are permitted to pass through a common
mixing outlet upon the operation of first and second flow control
valves, the improvement comprising, in combination:
a. a mounting panel having a front and rear face and at least two
apertures therethrough;
b. manifold means mounted on the rear face of said mounting panel
having first and second outlet ports aligned with said two
apertures in said panel, the plane of the surface of the manifold
forming said ports being substantially coplanar with the plane of
said panel, said manifold means further including at least two
inlets adapted to be connected respectively to a supply of
flavoring syrup and a supply of fluid to be mixed therewith and
spring biased valve seat means disposed in said manifold between
said first and second outlet ports and said two inlets to normally
prevent the flow of liquids through said manifold means;
c. a flow control valve assembly having first and second inlet
tubes and a single outlet with a normally closed spring biased
valve disposed between each of said first and second inlet tubes
and said single outlet;
d. means for simultaneously removably mounting said flow control
valve assembly from the front face of said mounting panel with said
first and second inlet tubes of said flow control valve passing
through said apertures in said panel into said outlet ports of said
manifold means to thereby displace said valve seat means from said
normally closed position to an open position; and
e. actuator means operatively connected to said normally closed
spring biased valves in said flow control valve assembly for
opening same, said actuator means being located on the front side
of said panel.
2. Apparatus as in claim 1 wherein said actuator means comprises a
manually operated lever and linkage means coupling said lever to
said spring biased valve means of said flow control valve
assembly.
3. Apparatus as in claim 1 wherein said flow control valve assembly
includes adjustment means for controlling the time sequence between
the start of the flow of syrup and the flow of the fluid to be
mixed therewith when said actuator means is operated.
4. Apparatus as in claim 3 wherein said flow control valve assembly
further includes additional adjustment means for setting the volume
rate of flow of either said syrup or said fluid to a desired
value.
5. Apparatus as in claim 1 wherein said flow control valve
comprises a generally torroidal outer sealing ring with sealing
pallet means disposed generally coaxially within said outer
ring.
6. Apparatus as in claim 5 wherein said sealing pallet means is
provided with a single seat within said single outlet.
7. Apparatus as in claim 1 wherein said actuator means comprises a
manually operated lever, first linkage means coupling said lever to
an electrically operated solenoid having push rod means operatively
associated with the armature thereof, and second linkage means
coupling said push rod means to said flow control valve assembly.
Description
BACKGROUND OF THE INVENTION
This invention relates generally to beverage dispensing apparatus,
and more specifically to an improved liquid mixing and dispensing
assembly which is easy to disassemble and clean and therefore quite
simple to maintain.
Many bars, restaurants and soda fountains which sell soft drinks
utilize a mixture of a flavoring syrup and another liquid to be
mixed therewith, usually water or water charged with carbon dioxide
gas. This approach is found to reduce costs and to minimize the
materials handling problems attendant with bottled beverages. Many
forms of mixing and dispensing valves are known in the prior art
for combining the flavoring syrup and the liquid to be mixed
therewith. However, a common defect of these prior art designs is
that they often present problems in cleaning away excess syrup
and/or the mixed beverage which necessarily builds up through
spillage in normal use of the equipment.
In establishments where several different types or flavors of
carbonated beverages are to be sold, the prior art mixing and
dispensing valve assemblies required as many connections to sources
of carbonated water as there were types of flavors to be offered.
This necessitated rather costly plumbing and added to the
complexity of the routing and interconnections, often creating an
unsightly arrangement.
The present invention obviates these two drawbacks and results in a
beverage dispensing system which is easy to maintain and which does
not require complicated interconnection patterns to the products to
be dispensed. In the preferred embodiment of this invention, these
advantages are obtained through the unique design of a manifold and
a flow-control valve assembly which utilize self-sealing,
quick-disconnect valve seats in conjunction therewith such that
when the parts are disassembled for cleaning, the flow of fluids
therethrough are automatically halted and the surface on which the
parts are normally mounted is free of protruding parts and
therefore easy to sponge clean.
The design of the manifold assembly, which is an integral part of
the system of this invention, allows a single source of carbonated
water or other fluid to be used in conjunction with a plurality of
different beverage dispensing nozzles, thereby reducing the amount
of plumbing over that required by prior art systems of equal size
in terms of varieties to be offered.
SUMMARY OF THE INVENTION
Accordingly, it is the principal object of this invention to
provide a novel beverage dispensing assembly and system.
Another object of the invention is to provide a beverage dispensing
and mixing apparatus which may be readily disassembled for purposes
of cleaning.
Still another object of this invention is to provide a beverage
dispensing system which is simple and therefore less expensive to
install and which uses a minimum of external connections to the
supply of liquids to be dispensed.
Yet another object of the invention is to provide a novel beverage
mixing and dispensing valve which permits two or more liquids to be
mixed in any desired proportion.
Yet still another object of this invention is to provide a beverage
dispensing and mixing apparatus which may be activated by an
attendant through the use of an electrical circuit including a
solenoid.
The novel features that are considered characteristic of this
invention are set forth with particularity in the appended claims.
The invention itself, both as to its organization and method of
operation, as well as additional objects and advantages thereof,
will best be understood from the following description when read in
connection with the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a side elevational view of one embodiment of the
invention;
FIG. 2 is a front elevation of the apparatus of FIG. 1;
FIG. 3 is a plan view of the apparatus of FIGS. 1 and 2;
FIG. 4 is a blown-apart perspective view of the preferred
embodiment;
FIG. 5 is a cross-sectional view taken through one of the inlet and
outlet ports of the manifold;
FIG. 6 is a sectional view taken along the line 6--6 of FIG. 5;
FIG. 7 is a side elevational view showing the motion of a lever
element which is associated with only one of the flow control
valves in the assembly;
FIG. 8 is a top elevational view of a portion of a valve prepared
in accordance with the present invention, and designed to be
electrically actuated;
FIG. 9 is an elevational view of the structure shown in FIG. 8,
that is, with the valve base removed from the panel; and
FIG. 10 is a side elevational view, partially broken away, of the
structure of the present invention equipped with an electrical
solenoid actuating element.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring now to the figures, the details of construction of the
preferred embodiment will be described. Common parts appearing on
the several views will be marked with the same identifying
numeral.
FIGS. 1, 2 and 3 clearly depict the external appearance of the
beverage dispensing apparatus of this invention. The apparatus is
principally comprised of two main parts, the manifold assembly
identified generally by the numeral 10 and the flow control valve
assembly indicated generally by the numeral 12. The forward surface
of the manifold assembly is secured to the rear surface of a
mounting panel 14 and is normally hidden from the view of a
customer, with the forward surface of the manifold being coplanar
with the rear surface of panel 14. The flow control valve 12 is
mounted on the front surface of mounting panel 14 and is,
therefore, the portion which is normally visible. The operative
portion of the flow control valve assembly can best be seen in the
exploded view of FIG. 4 and is identified by numeral 16. A
decorative cover 18 normally conceals the assembly 16 from view.
The fluids to be dispensed are applied under pressure to the inlet
connections 20 and/or 22 of the manifold assembly 10. The barbed
input connections are adapted to receive suitable tubing which
leads to the reservoir of the liquid or liquids to be
dispensed.
As is illustrated in FIG. 2, any desired number of liquid mixing
and dispensing valve assemblies may be mounted on the panel 14 and
while only two are illustrated, it should be understood that
additional units may be employed in a system.
Associated with each flow control valve assembly 12 is a manually
displaceable lever 24 which is pivotally mounted with respect to a
mounting rod 23 coupled through a linkage 25 to a pair of flow
control valves disposed in the assembly 16 between the male inlet
connections 26 and 28 thereof and the output nozzle 30 (FIG. 4).
The levers 24 are slightly curved as can best be seen in FIG. 1.
The curvature of this lever is such that it conforms to the side of
a glass in which the beverage is to be allowed to pour. If desired,
it is possible to eliminate the manual lever actuator 24 and
replace it with the armature of an electrical solenoid so that the
dispenser apparatus can be actuated by a push-button contact. All
that is required is a linkage which will convey the motion of the
armature to the flow control valves disposed in the assembly 16
between the male inlet projections 24 and 26 and the outlet nozzle
30.
Attention is now directed to FIGS. 3 and 7 wherein another feature
of the invention is illustrated, this being the inclusion of a
second manually positionable lever 32 which is associated with only
one of the flow control valves in the assembly 16. Specifically,
the manual depression of the lever 32 will cause the valve seat
associated with the carbonated water supply to be operated
independently of the valve associated with the flavoring syrup
supply so that, if desired, one can add additional carbonated water
to the beverage without adding additional syrup. As is apparent
from FIG. 3, actuation of the lever 32 in a counter-clockwise
direction, such as is illustrated in phantom in FIG. 7, opens the
valve associated with this lever and the carbonated water is
dispensed. In order to provide a resilient return for lever 32, an
arm or flexible segment 32A is provided which abuts the surface of
panel 14 as indicated in FIG. 7. A similar lever may be provided
for adjacent units.
Referring now to FIG. 5, the details of the construction of the
novel manifold assembly of this invention will be described. The
manifold is preferably formed from a buitable plastic such as nylon
by a molding process and generally includes a block of such
material 34 having a plurality of apertures such as bores 36, 38
and 40 formed therein.
The bores, such as 36 and 38 formed in the walls of the block 34
which are not contiguous with the mounting panel 14, are adapted to
receive either barbed tubular input connectors 20 or 22 or a simple
plug 42. Each of the bores 36 and 38 communicates with a valve seat
chamber 44 also formed in the manifold block 34. This valve seat
chamber 44 communicates with the output port located within the
bore 40. The manifold assembly 10 is adapted to be secured to the
mounting panel 14 by means of machine screws 35 which pass through
apertures formed in the panel 14 and into threaded receptacles in
the block 34. Located within the valve seat chamber 44 is a valve
seat 48 which is normally biased rightwardly to a closed position
in contact with an O-ring seal 50 also disposed in the chamber 44
in abutment with an annular spacer member 52. The valve seat 48 is
urged to the right by means of the compression spring 54 which is
concentric with the stem 56 of the valve seat 48 and which abuts a
shoulder 57 formed in the block 34. When the valve seat 48 is in
its right-most position, it blocks the female outlet port 58 formed
in the outlet bore 40. Hence, liquids applied to the input
connections 20 and 22 are precluded from flowing through the valve
seat chamber 44 and the female outlet port 58.
The valve seat member 48 is adapted to be moved to the left (its
open position) by the introduction of the male inlet connections 26
and 28 of the flow control valve assembly 16 into the female output
ports 58. Specifically, when the flow control valve assembly 16 is
in place, the male inlet connections 26 and 28 pass through
apertures formed in the mounting panel 14 and slidably fit into the
female outlet ports 58 of the manifold 34. The flow control valve
assembly 16 is removably secured to the mounting panel by means of
a locking pin 60, which passes through an aperture 61 formed in the
upper surface of the flow control valve assembly 16 and into a
corresponding aperture 62 formed in an L-shaped bracket 64 secured
to the panel 14. The horizontal portion of bracket 64 fits into a
slot (not shown) in the rear surface of block 16. Liquids will be
permitted to flow through the manifold from the input connections
20 and 22 and into the male input connections 26 and 28 of the flow
control valve assembly 16 only when the assembly 16 is in place on
the front of the panel 14. Thus, when the manually operated lever
24 is pressed rearwardly toward mounting panel 14, the upper tip
end thereof causes actuation of the valve generally designated 65.
Specifically, valve 65 comprises an outer annular ring member 65A
through which a centrally disposed pallet member 65B is coupled to
the assembly. Actuating lever 65C extends radially outwardly from
valve 65, and, as indicated in FIG. 5, is associated with the
linkage including actuating linkage members 68 and 70, which are
more fully described hereinafter. As is apparent in FIG. 5, the
pallet 65B of valve 65 seats against seat 67, and thus controls
flow of fluid through the apparatus. Thus, when pallet 65B is
unseated, flow control valve assembly 16 will be opened and the
liquids will be allowed to flow through the mixing chamber 66 and
out of the nozzle 30.
Referring still to FIG. 4, the thin, flat U-shaped member 68 is
formed from a suitable material so as to constitute a leaf-type
spring which normally urges the top ends of the linkages 70 and 72
in a rearward direction (toward panel 14) about the pivot rod 23.
As a result, the portion of the linkages 70 and 72 below the pivot
rod 23 act upon arms 65C and thus control the disposition of pallet
member 65B disposed between the male inlet connections 26 and 28
and the mixing chamber 66. The rearward depression of the flow
control lever 24 moves cross-link 25 forward to act against the
force exerted by the leaf spring 68 and tips the linkages 70 and 72
in a forward direction, thereby allowing the pallets 65B located in
the flow control assembly 16 to unseat, which in turn, allows the
flow of liquids therethrough. Other resilient biasing means such as
a coil spring or the like may be substituted for leaf spring
68.
One of the principal advantages of the present invention is the
ease with which the dispenser system may be cleaned. In doing so,
one merely lifts upwardly on the cover member 18 which is arranged
to slip into the notches 76 in the mixing chamber 66 to expose the
flow control valve assembly 16. The operator next pulls upward on
the latch pin 60 removing it from the bracket 64 such that the flow
control valve assembly block 16 may be pulled outward from the
mounting panel 14. When the male inlet projections 26 and 28 are
removed from the female output ports 58 of the manifold block 34,
the valve seats 48 therein will move to their closed position to
seal off the flow of any further liquids from the reservoir to the
female outlet port. The front surface of the mounting panel 14 is
therefore free of any projections (except the small L-shaped
bracket 64) and can be readily sponged clean. The nozzle 30 is
secured to the mixing chamber 66 by a friction fit and can readily
be removed. Since no screw threads or unusual sealing rings or the
like are employed, the nozzle is also easily cleaned. The flow
control valve assembly 16 and its attached mixing chamber 66 can be
totally immersed in water for cleaning purposes without damage.
Also, back-flushing of water through the nozzle 30 can be readily
accomplished to further facilitate cleaning.
As soon as the flow control valve assembly 16 is again secured in
place on the mounting panel 14 by the locking pin 60, the valve
seats 48 in the manifold block 34 will again be moved to the open
position because of the rearward force applied by the male inlet
projections 26 and 28 to permit the flow of fluid therethrough
under control of the valves contained in the flow control valve
assembly 16.
The plan view of FIG. 3 shows an inlet connection 22 for each of
the dispenser valve assemblies mounted on the panel 14. In
practice, it has been found that the amount of external connections
can be considerably reduced by providing a single inlet connection
for attachment to the source of carbonated water or other liquid
which is to be used as the mix. This is achieved by providing a
molded tubular interconnection 78 between manifold blocks 34 of
adjacent beverage dispensing units which communicate with a
continuous tubular channel 80 formed through the manifold block 34.
Ports located in the rear or bottom surfaces of the manifolds 34
can be selectively blocked with plugs 42 to preclude the flow of
liquid from the tubular passage 80 to one of the valve seat
chambers 44 in any one of the several manifold block assemblies
which may be mounted on the panel 14. Thus, if a source of liquid,
such as carbonated water, is connected to a single one of the
inlets 22, it can be supplied to each of several dispenser valve
assemblies which may be mounted on the panel 14 by way of the
interconnecting tubes 78. Alternatively, the flow to any particular
assembly can be blocked by a plug 42 and a different liquid supply
(such as tap water) can be connected directly to that unit by way
of its inlet connection 22.
In operation, it is generally desired that the mixing liquid begin
to flow through the nozzle 30 before the syrup is allowed to mix
therewith. The relative timing between the introduction of the
mixing liquid and the initiation of the flow of flavoring syrup
following depression of the flow control lever 24 is adjustable and
is accomplished by turning the set screws 82 and 84 so that they
protrude by differing extents from the valve linkages 70 and 72.
The more the set screw is inserted, the sooner its associated valve
seat will be opened upon depression of lever 24.
Adjustment is also available in the volume rate of flow through the
valves. This allows the operator to set the flow rate at a desired
valve to insure the proper ratio of flavoring syrup to mixing
liquid. Referring to FIG. 1, located in the bottom surface of the
flow control valve blocks 16 are first and second set screws 86
which are adapted to cooperate with the channels between the male
inlet projections 26 and 28 and the valve seat chambers (not shown)
in assembly 16. The screw can be made to partially obstruct this
passage by a desired and predetermined amount.
Electrical operation is available for the apparatus of the present
invention, with such a unit shown in FIGS. 8, 9 and 10. The
operational features of this structure are, nevertheless, the same
as those shown in the device illustrated in FIGS. 1-7, with the
exception being the electrical actuation. With specific attention
now being directed to FIGS. 8, 9 and 10, lever 90, which coincides
essentially with lever 24, is provided with a switch actuating cap
92 having an extension arm 94 extending therefrom. Arm 94 makes
contact with switch bar 96 which, in turn, strikes the actuating
pin of switch 97 through upper switch pad 98. Lever 90, as
indicated, is pivotally mounted on pivot pin 100. Return spring
102, preferably fabricated from plastic, is provided to maintain
lever 90 in a clockwise extended disposition.
As is apparent in the drawing, solenoid 104 is provided for
accomplishing the valve actuation. Solenoid 104, coupled to switch
97 through leads 106, has a push-bar 108 coupled thereto, with
push-bar 108 being utilized to strike soda and syrup activators 110
upon outward travel of push-bar 108. Pin 112 is provided, as shown
in FIG. 10, to permit removal of the forwardly extending portion of
the assembly, shown generally at 114. Thus, the complete valve unit
can be removed completely independently of the electrical portion,
to permit periodic cleaning, as required. Also, it will be
appreciated that the complete electrical portion of the system can
be easily removed from back of the panel in order to permit
inspection and repair. Since switch failures are more frequently
experienced, the switch is preferably rendered more accessible.
Conventional voltage and current requirements are available, and
low voltage, such as 24-volt supplies, may be utilized if
desired.
Thus, it can be seen that the present invention provides a means
whereby the various objects and advantages previously referred to
can be accomplished. Various modifications can be made in the
details of construction. Hence, the scope of the invention is to be
determined by the following claims.
* * * * *