U.S. patent number 3,756,473 [Application Number 05/210,008] was granted by the patent office on 1973-09-04 for dispenser assembly.
This patent grant is currently assigned to Eaton Corporation. Invention is credited to William R. Donahue, Jr..
United States Patent |
3,756,473 |
Donahue, Jr. |
September 4, 1973 |
DISPENSER ASSEMBLY
Abstract
An improved dispenser assembly includes a single control lever
or three independent levers which are selectively operated to
dispense either cold water or a mixture of water and a selected one
of a plurality of drink concentrates. A pair of control knobs are
provided for independently varying the ratio of the two drink
concentrates to water in the dispensed mixture. To enable the
mixture of concentrate and water to be varied, a bypass passage is
provided around the throat of a venturi to a mixing zone or chamber
where the concentrate and water are mixed. The concentrates are
supplied to the mixing zone from a pair of removable containers.
The removable containers, venturis, dispensing nozzles and by-pass
controls can be readily removed to facilitate cleaning.
Inventors: |
Donahue, Jr.; William R.
(Batavia, IL) |
Assignee: |
Eaton Corporation (Cuyahoga
County, OH)
|
Family
ID: |
22781248 |
Appl.
No.: |
05/210,008 |
Filed: |
December 20, 1971 |
Current U.S.
Class: |
222/129.2;
222/144.5; 222/571 |
Current CPC
Class: |
B67D
1/0045 (20130101); B67D 1/0043 (20130101); B67D
2001/0824 (20130101) |
Current International
Class: |
B67D
1/00 (20060101); B67d 005/56 () |
Field of
Search: |
;222/129.1,129.2,135,129.3,57,132,133,145,144.5,571
;137/599.1,604 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Reeves; Robert B.
Assistant Examiner: Rolla; Joseph J.
Claims
Having described specific preferred embodiments of the invention,
the following is claimed:
1. Dispenser apparatus for dispensing a mixing beverage with a
selected one of a plurality of drink concentrates, said dispenser
assembly comprising:
a. a mixing beverage inlet valve having a closed position
preventing mixing beverage flow therethrough and an open position
permitting flow through its outlet;
b. a manifold conduit communicating with the outlet of said inlet
valve and having first and second valves disposed therein;
c. manually operable means for actuating said inlet valve with one
of said first and second valves including a lever rotatable in a
first plane to selectively engage one of said first and second
valves and pivotable in a second plane to actuate said selectively
engaged valve and said inlet valve;
d. first and second containers for storing drink concentrates for
said first and second valves respectively; and
e. mixing and nozzle means connecting said first valve with said
first drink container and said second valve with said second drink
container for mixing and dispensing a selective drink concentrate
in predetermined proportion to said mixing beverage when said
manually operable means are actuated.
2. The dispenser apparatus of claim 1 wherein said mixing beverage
constitutes water and said apparatus further includes a third valve
in said manifold conduit and an associated conduit and nozzle
therewith for dispensing water.
3. The dispensing apparatus of claim 2 wherein said lever further
includes a first and second cammed projection extending therefrom,
said second cammed projection disposed further outwardly than said
first, said inlet valve has a spring biased valve stem for
actuating said valve and adjacent said second projection in all
positions of said lever in said first plane and depressed by said
lever when said lever is pivoted in said second plane, said first,
second and third valves have shelves for actuating said valves
which extend over said first projection when said lever is in a
selected position, and said manually operable means further
includes seating means to permit said lever to rotate and pivot
about a fixed point thereon.
4. A dispenser assembly for use in dispensing either water or a
mixture of water and a selected one of a plurality of drink
concentrates, said dispenser assembly comprising nozzle means for
dispensing either water or a mixture of water and a selected one of
a plurality of drink concentrates, first mixing means for mixing
water and a first drink concentrate, second mixing means for mixing
water and a second drink concentrate, a plurality of conduit means
including a first conduit means for conducting water to said nozzle
means, second conduit means for conducting water to said mixing
means and for conducting a mixture of water and the first drink
concentrate from the first mixing means to said nozzle means, and
third conduit means for conducting water to said second mixing
means and for conducting a mixture of water and the second drink
concentrate from the second mixing means to said nozzle means,
first valve means operable between a closed condition blocking a
flow of water through said first conduit means and an open
condition enabling water to flow through said first conduit means
to said nozzle means, second valve means operable between a closed
condition blocking a flow of water through said second conduit
means to said first mixing means and an open condition enabling
water to flow through said second conduit means to said first
mixing means and enabling a mixture of water and the first drink
concentrate to flow from said first mixing means to said nozzle
means, third valve means operable between a closed condition
blocking a flow of water through said third conduit means to said
second mixing means and an open condition enabling water to flow
through said third conduit means to said second mixing means and
enabling a mixture of water and the second drink concentrate to
flow from said second mixing means to said nozzle means, and
actuator means for operating a selected one of said valve means
between the open and closed conditions to effect a flow either
water or a mixture of water and a selected one of the drink
concentrates to said nozzle means, said actuator means including a
manually engageable selector member and mounting means supporting
said selector member for movement between a selected one of a
plurality of operating positions in each of which said selector
member is associated with a selected one of said valve means, said
mounting means also supporting said selector member for movement
between an unactuated position and an actuated position when said
selector member is in any one of said operating positions to enable
said selector member to effect operation of a selected one of said
valve means from the closed condition to the open condition to
enable either water or a mixture of water and one of the drink
concentrates to flow to said nozzle means and said mounting means
includes means for supporting said selector member for rotational
movement about first axis to a selected one of said plurality of
operating positions and means for supporting said selector member
for rotational movement about a second axis between said unactuated
and actuated positions.
5. Dispensing apparatus for mixing a beverage with a concentrated
beverage to produce a mixed beverage of various proportions thereof
and dispensing same comprising:
a. a first conduit having an upstream portion, a downstream portion
and a throat portion interposed said upstream and downstream
portions;
b. means for supplying said mixing beverage to said upstream
portion of said first conduit;
c. means for supplying said concentrated beverage to said
downstream portion of said first conduit at a first point therein
adjacent said throat portion when and as said mixing beverage flows
through said throat portion;
d. a second conduit having an inlet connected to said upstream
portion of said first conduit and an outlet connected to said
downstream portion of said first conduit at a second point beyond
said first point; and
e. an adjustable valve in said second conduit regulating the flow
of mixing beverage therethrough and correspondingly the flow rate
of mixing beverage through said throat section.
6. The dispensing apparatus of claim 5 wherein said adjustable
valve comprises a rotatable knob having marked indicia thereon, a
shaft secured at one end to said knob and sealing disposed in said
second conduit, said shaft having a tapered end portion at its
other end adjacent said outlet of said second conduit.
7. The dispensing apparatus of claim 5 wherein said adjustable
valve comprises a rotatable knob having marked indicia thereon, a
hollow shaft secured at one end to said knob and sealing disposed
in said second conduit, said shaft having an opening extending
through one of its wall portions and adapted to be in and out of
engagement with said outlet of said second conduit when said knob
is rotated.
8. A dispenser assembly for use in dispensing either water or a
mixture of water and a selected one of a plurality of drink
concentrates, said dispenser assembly comprising nozzle means for
dispensing either water or a mixture of water and a selected one of
a plurality of drink concentrates, first mixing means for mixing
water and a first drink concentrate, second mixing means for mixing
water and a second drink concentrate, a plurality of conduit means
including a first conduit means for conducting water to said nozzle
means, second conduit means for conducting water to said first
mixing means and for conducting a mixture of water and the first
drink concentrate from the first mixing means to said nozzle means,
and third conduit means for conducting water to said second mixing
means and for conducting a mixture of water and the second drink
concentrate from the second mixing means to said nozzle means,
first valve means operable between a closed condition blocking a
flow of water through said first conduit means and an open
condition enabling water to flow through said first conduit means
to said nozzle means, second valve means operable between a closed
condition blocking a flow of water through said second conduit
means to said first mixing means and an open condition enabling
water to flow through said second conduit means to said first
mixing means and enabling a mixture of water and the first drink
concentrate to flow from said first mixing means to said nozzle
means, third valve means operable between a closed condition
blocking a flow of water through said third conduit means to said
second mixing means and an open condition enabling water to flow
through said third conduit means to said second mixing means and
enabling a mixture of water and the second drink concentrate to
flow from said second mixing means to said nozzle means, and
actuator means for operating a selected one of said valve means
between the open and closed conditions to effect a flow either
water or a mixture of water and a selected one of the drink
concentrates to said nozzle means, said actuator means including a
manually engageable selector member and mounting means supporting
said selector member for movement between a selected one of a
plurality of operating positions in each of which said selector
member is asssociated with a selected one of said valve means, said
mounting means also supporting said selector member for movement
between an unactuated position and an actuated position when said
selector member is in any one of said operating positions to enable
said selector member to effect operation of a selected one of said
valve means from the closed condition to the open condition to
enable either water or a mixture of water and one of the drink
concentrates to flow to said nozzle means and first bypass means
for enabling the ratio of water to first drink concentrate mixed in
said first mixing means to be varied, and second bypass means for
enabling the ratio of water to second drink concentrate mixed in
said second mixing means to be varied.
9. A dispenser assembly as set forth in claim 8 further including
first flow regulating means connected with said first bypass means
for varying a flow rate of water through said bypass means reltive
to the flow rate of water through said second conduit means, and
second flow regulating means connected with said second bypass
means for varying a flow rate of water through said second bypass
means relative to the flow rate of water through said third conduit
means.
10. A dispenser assembly as set forth in claim 9 wherein said first
mixing means includes a first venturi means having an upstream end
portion for receiving water from said second conduit means, a
throat, and a mixing chamber downstream of said throat connected in
fluid communication with a source of the first drink concentrate,
said first bypass means including a conduit for conducting water
from an area adjacent to the upstream end portion of said first
venturi means to an area downstream of said throat, said second
mixing means including a second venturi means having an upstream
end portion for receiving water from said third conduit means, a
throat and a mixing chamber downstream of said throat connected in
fluid communication with a source of the second drink concentrate,
said second bypass means including a conduit for conducting water
from an area adjacent to the upstream end portion of said second
venturi means to an area downstream of said throat of said second
venturi means.
11. A dispenser assembly for use in dispensing a mixture of water
and a selected one of plurality of drink concentrates, said
dispenser assembly comprising a base member, first container means
for holding a first drink concentrate, second container means for
holding a second drink concentrate, first mixing means for mixing
drink concentrate from said first container means with water,
second mixing means for mixing drink concentrate from said second
container means with water, first conduit means for conducting
drink concentrate from said first container means to said first
mixing means, second conduit means for conducting drink concentrate
from said second container means to said second mixing means, first
nozzle means for dispensing a mixture of the first drink
concentrate and water, second nozzle means for dispensing a mixture
of the second drink concentrate and water, third conduit means for
conducting water to said first and second mixing means and for
conducting a mixture of water and drink concentrate from said first
and second mixing means to said nozzle means, valve means operable
between a closed condition blocking a flow of water through said
third conduit means to at least one of said mixing means and an
open condition enabling water to flow through said third conduit
means to at least one of said mixing means, guide means disposed on
said base for guiding movement of said first and second container
means relative to said base, each of said first and second
container means being independantly movable relative to said base
between a retracted position and an extended position projecting
outwardly from said base to provide access to the interior of one
of said container means when it is in the extended position, and
wherein said first and second conduit means each include a first
section of conduit connected with an associated one of said
container means for movement therewith relative to said base, a
second section of conduit connected with said base, and releasable
coupling means for interconnecting said first end sections of
conduit, each of said first sections of conduit and the associated
one of said container means being movable toward said base when the
associated one of said container means is in the retracted position
to effect an interconnection of the associated first and second
sections of conduit by one of said coupling means and away from
said base to effect a disconnection of the associated first and
second sections of conduit at said one coupling means to release
the associated container means for movement from its retracted
position to its extended position.
12. A dispenser assembly as set forth in claim 11 further including
first stop means connected with said base for blocking outward
movement of said first container means when said first container
means reaches the extended position during movement from the
retracted position, and second stop means connected with said base
for blocking outward movement of said second container means when
said second container means reaches the extended position during
movement from the retracted position.
13. A dispenser assembly as set forth in claim 11 further including
first stop means connected with said base for engaging a trailing
wall of said first container means to block outward movement of
said first container means when said first container means reaches
the extended position during movement from the retracted position,
and second stop means connected with for engaging a trailing wall
of said second container means to block outward movement of said
second container means when said second container means reaches the
extended position during movement from the retracted position, said
guide means including means for enabling the trailing walls of said
first and second container means to move away from said base and
clear of said first and second stop means.
14. A dispenser assembly as set forth in claim 11 further including
first drink strength control means for varying the ratio of the
first drink concentrate to water in the mixture conducted from said
first mixing means to said first nozzle means, and second drink
strength control means for varying the ratio of the second drink
concentrate to water in the mixture conducted from said second
mixing means to said second nozzle means.
15. A dispenser assembly as set forth in claim 11 further including
first retainer means for releasably holding said first container
means against movement relative to said base when said first
container means is in the retracted position and the associated
first and second sections of conduit are interconnected by one of
said coupling means, second retainer means for releasably holding
said second container means against movement relative to said base
when said second container means is in the retracted position and
the associated first and second sections of conduit are
interconnected by another of said coupling means, said first and
second retainer means being selectively operable to release said
first and second container means for movement relative to said base
to disconnect the associated first and second conduit sections
while said first and second container means are in their retracted
positions.
16. A dispenser assembly as set forth in claim 15 wherein said
first retainer means is connected with said first nozzle means and
said second retainer means is connected with said second nozzle
means, said first and second nozzle means being movable relative to
said base to effect operation of said first and second retainer
means to release said first and second container means for movement
away from said base.
17. A multibeverage dispenser for mixing water and a selected one
of a plurality of drink concentrates and dispensing same,
comprising:
a. a water inlet valve having an inlet connected to a source of tap
water and an outlet, a closed position preventing water flow
therethrough and an open position permitting water flow out said
outlet;
b. a tempering tank having an inlet connected to said outlet of
said inlet valve and an outlet;
c. a manifold conduit connected to said outlet of said tempering
tank and having a first and second valve disposed therein;
d. manually operable means for actuating said inlet and a selected
one of said first and second valves to allow tempered water to flow
through said selected valve;
e. first and second containers for storing drink concentrates for
first and second valves respectively;
f. means for mixing and dispensing one of said drink concentrates
with its associated valve when said manually operable means is
actuated, said mixing and dispensing means further including first
and second nozzles and first and second conduit means connecting
said first and second valves with said first and second containers
and said first and second nozzles respectively and drip preventing
means preventing beverage from dripping from said nozzles when said
manually operable means is not actuated, said drip preventing means
including a vented connection between said and second nozzles and
said first and second conduit means respectively.
Description
The present invention relates generally to a dispenser assembly and
more particularly to a dispenser assembly which is capable of
dispensing a selected one of a plurality of beverages.
Several known types of dispenser assemblies have been utilized in
refrigerators to dispense either water or a mixture of water and a
drink concentrate. One of these known dispenser assemblies is
disclosed in U.S. Pat. No. 2,823,833 to Bauerlein. While known
dispenser assemblies have been generally satisfactory in operation,
certain problems have been encountered in manufacturing and using
them.
The operation of a known drink dispenser has been somewhat
unsatisfactory in that the ratio of drink concentrate to cold water
can be adjusted only by varying the strength of the concentrate in
a supply container for the dispenser. In addition, difficulties
have been encountered in using a known drink dispenser due to a
dripping of water and/or drink mixture from the dispensing nozzles
and concentrate pick-up tubes. Other problems which are encountered
to a greater or lesser extent during the operation of known drink
dispensers relate to filling of the concentrate containers and
cleaning the dispenser. Finally, many of the known drink dispensers
have been relatively difficult to assemble and clean.
Accordingly, it is an object of this invention to provide a new and
improved dispenser assembly having a drink strength control for
varying the ratio of drink concentrate to water in a dispensed
mixture.
Another object of this invention is to provide a new and improved
dispenser assembly for use in dispensing either water or a mixture
of water and a selective one of a plurality of drink concentrates
where a single control lever or multiple levers are utilized to
select and dispense either water or a mixture of water and a
desired one of a plurality of drink concentrates.
Another object of this invention is to provide a new and improved
dispenser assembly having vented nozzles to insure a complete
discharge of liquid from the nozzles without subsequent dripping
and also aeriate the mixed product to enhance flavor.
Another object of this invention is to provide a new and improved
dispenser assembly having apparatus for mixing a selected one of a
plurality of drink concentrates with water and selectively
dispensing them and wherein the dispenser assembly can be readily
disassembled for cleaning.
Another object of this invention is to provide a new and improved
drink dispenser assembly having concentrate containers which can be
moved between a retracted position in which the concentrate
containers are connected in fluid communication with apparatus for
mixing drink concentrates with water and an extended position in
which the interior of the containers is readily accessible to allow
the level of concentrate to be checked and the container filled
with additional concentrate if necessary.
Another object of this invention is to provide a new and improved
dispenser assembly for dispensing either water or a mixture of
water and a selected one of a plurality of drink concentrates
wherein the dispenser assembly includes a first drink strength
control device for varying the ratio of a first drink concentrate
to water in a dispensed mixture and a second drink strength control
device for varying the ratio of a second drink concentrate to water
in a dispensed mixture.
Another object of this invention is to provide a new and improved
dispenser assembly as set forth in the next preceding object and
wherein the mixing and drink strength controls each include a
venturi or similar means for induring a flow of concentrate to a
mixing zone and means for bypassing water around a throat to the
venturi to the mixing zone to enable the ratio of water to drink
concentrate to be varied.
These and other objects of the features of the invention will
become more apparent upon a consideration of the following
description taken in connection with the accompanying drawings
wherein:
FIG. 1 is an illustration of a drink dispenser assembly
construction in accordance with the present invention in
association with a tempering tank or reservoir which holds
refrigerated water;
FIG. 2 is a fragmentary elevational view, taken generally along the
line 2--2 of FIG. 1, illustrating the relationship between a pair
of concentrate containers, dispensing nozzles, and drink strength
control knobs;
FIG. 3 is a plan view taken generally along a line 3--3 of FIG. 2,
illustrating a plurality of control valves which are operated one
at a time by a selector lever to direct a flow of cold water to
either a water dispensing nozzle or to one of a pair of mixing
devices in which water is mixed with a drink concentrate;
FIG. 4 is a sectional view, taken generally on line 4--4 of FIG. 3,
illustrating a closed control valve for controlling a flow of water
to a mixing device, a conduit arrangement for conducting drink
concentrate from a container to the mixing device, and a dispensing
nozzle for dispensing a mixture of water and drink concentrate, the
selector lever being shown in an unactuated position;
FIG. 5 is a sectional view, taken generally along the line 5--5 of
FIG. 3, illustrating a flow path of water from an open control
valve to a dispensing nozzle, the selector lever being shown in an
actuated position;
FIG. 6 is a sectional view, taken generally along the line 6--6 of
FIG. 4, illustrating the relationship between venturis in the
mixing devices and drink strength control valves which are operable
to vary the ratio of drink concentrate to water in a mixture
conducted from the mixing devices;
FIG. 7 is an enlarged fragmentary sectional view illustrating a
second embodiment of the drink strength control device; and
FIG. 8 is a schematic illustration depicting the flow of water and
drink concentrate through the dispenser assembly.
A drink dispenser assembly 12 for dispensing either water or a
mixture of water and a selected one of a plurality of drink
concentrates is illustrated in FIG. 1 in a refrigerator 14 in
association with a cold water reservoir or tempering tank 16. A
single manually operable control or selector lever 20 is
selectively operable between an unactuated position (FIG. 4) and an
actuated or dispensing position (FIG. 5) to dispense either cold
water from a nozzle 24 (FIG. 1), a mixture of a first drink
concentrate and cold water from a nozzle 26, or a mixture of a
second drink concentrate and cold water from a nozzle 28. The two
drink concentrates are stored in separate containers 32 and 34 and
are mixed with cold water in an associated one of a pair of mixing
devices 36 or 38 (see FIG. 6), upon suitable actuation of the
selector lever 20. The ratio of drink concentrate to water
dispensed from the nozzles 26 and 28 can be selectively controlled
by means of drink strength control devices 42 and 44 having control
knobs 46 and 48 which are readily accessible from the front of the
dispenser assembly 12.
In accordance with a feature of the invention, the selector lever
20 is manually operable to actuate a selected one of a plurality of
control valves 52, 54 or 56 (see FIGS. 3 and 6) to dispense either
water or a mixture of water and a selected one of the drink
concentrates. To enable the selector lever 20 to actuate any one of
the control valves 52, 54 or 56, the selector lever is pivotally
and rockably mounted at a swivel connection 60 (see FIGS. 3, 4 and
5) on a support member 62. When the selector lever 20 is in the
centered position of FIG. 3, an actuator arm or projection 66 is
disposed in abutting engagement with the lower side of a spring
finger or arm 70 which biases the central water flow control valve
54 towrad the closed position. When a handle portion 72 of the
selector lever 20 is depressed from the unactuated position of FIG.
4 to the actuated position of FIG. 5, the projection 66 lifts the
spring finger 70 and opens the valve 54. Opening the valve 54
enables water to flow from a manifold passage 74 through the valve
54 to the nozzle 24. Of course, when the selector lever 20 is
released, the spring finger 70 pivots or rocks the selector lever
20 in a clockwise direction (as viewed in FIG. 5) about the swivel
connection 60 to close the valve 54 and interrupt the flow of water
to the nozzle 24.
When it is desired to dispense a mixture of water and one of the
two drink concentrates, the selector lever 20 is pivoted from the
centered position of FIG. 3 toward the nozzle from which the
desired mixture of water and drink concentrate is to be dispensed.
If a mixture of water and the second drink concentrate from the
container 34 is to be dispensed, the selector lever 20 is rotated
in a counterclockwise direction (as viewed in FIG. 3) toward the
dispensing nozzle 28. This rotational movement of the selector
lever 20 moves the actuator arm 66 out from under the spring finger
70 and moves a second actuator arm or projection 78 to a position
beneath a second spring finger 82. The spring finger 82 biases the
valve 56 to the closed position of FIG. 4. Therefore, when the
handle 72 of the selector lever 20 is pivoted or rocked downwardly
from the unactuated position of FIG. 4 towards the actuated
position of FIG. 5, the projection 78 lifts the end of the spring
finger 82 and opens the control valve 56.
Similarly, when a mixture of water and the first drink from the
container 32 is to be dispensed, the selector lever 20 is rotated
in a clockwise direction, as viewed in FIG. 3, to move a third
actuator arm or projection 86 beneath a spring finger 88 which
biases the control valve 52 towards the closed position. Of course,
this pivotal movement of the selector lever 20 moves the actuator
arm 66 from beneath the central spring finger 70. A subsequent
depressing of the selector lever handle 72 causes the actuator arm
86 to lift the free end of spring finger 88 and open the flow
control valve 52.
Whenever one of the water flow control valves 52, 54 or 56 is
opened by the selector lever 20, cold or refrigerated water flows
from the tempering tank 16 and through the open valve to effect a
dispensing of either cold water from the nozzle 24 or a mixture of
cold water and drink concentrate from one of the nozzles 26 or 28.
To promote this flow of cold water from the tempering tank 16, a
main or inlet water control valve 92 is operated from the closed
position of FIG. 6 to the open position of FIG. 5 whenever the
selector lever 20 is actuated. Opening the water inlet valve 92
enables tap water to flow from an inlet connection 94 through the
water inlet control valve 92, along a valve actuator stem 96 and
through a passage 98 (FIG. 6) to an outlet connection 100. The
connection 100 is connected in fluid communication with the
tempering tank 16 by a flexible conduit or hose 102 (FIG. 1).
This flow of tap water under pressure into the tempering tank 16
causes relatively cold water to flow from the tempering tank to the
control valves 52, 54 and 56. Accordingly, the tempering tank 16 is
connected by a flexible hose or conduit 108 (see FIG. 1) to a
connection 110 leading to the manifold passage 74 and valves 52, 54
and 56 (FIG. 6). Since only one of the valves 52, 54 or 56 can be
opened at a time by depressing the selector lever 20, the cold
water will flow from the manifold passage 74 through the open valve
toward the associated one of the nozzles 24, 26 and 28.
To provide for actuation of the water inlet valve 92 each time the
selector lever 20 is depressed to open one of the control valves,
52, 54 and 56, the selector lever and inlet valve are
interconnected by a linkage 112 (FIGS. 4 and 5). The linkage 112 is
actuated by an arm or projection 114 on the selector lever 20. This
arm 114 is disposed beneath a cam section or portion 116 of a
pivotally mounted actuator lever 120. The cam section 116 of the
actuator lever 120 has such an extent that the arm 114 remains
beneath the cam section 116 during pivotal movement of the selector
lever 20 in moving either the arm 78 beneath the spring finger 82
or the arm 86 beneath the spring finger 88. Therefore, when the
selector lever 20 is depressed to open one of the valves 52, 54 or
56 the inlet valve actuator lever 120 is pivoted rearwardly by
camming action of the arm 114 against the cam section 116. As the
inlet valve actuator lever 120 is pivoted rearwardly, the arm 114
slides upwardly along the cam section 116 until the arm engages a
stop lip or section 122.
This rearward movement of the actuator lever 120 opens the water
inlet valve 92 as one of the control valves 52, 54 or 56 is opened.
Thus, as the lever 120 is pivoted in a clockwise direction as
viewed in FIGS. 4 and 5, a water inlet valve pin 124 is moved
rearwardly from the position shown in FIGS. 4 and 6 to the actuated
position of FIG. 5. This movement of the valve pin 124 moves the
valve stem 96 and opens the water flow control valve 92 against the
influence of a biasing spring 128. The resulting flow of tap water
through the open control valve 92 is maintained substantially
constant regardless of pressure variations by a water flow control
device 132 constructed in the manner described in U.S. Pat. No.
2,891,578 to Dahl et al. A screeen 134 is provided in the water
flow to remove water born dirt and other particles.
From the foregoing, it is apparent that the single selector lever
20 is operable to dispense either water or a mixture of water and a
selected drink concentrate. To select either water or a mixture of
water and a particular drink concentrate, the selector lever 20 is
pivoted to move an operating arm 66, 78 or 86 beneath the spring
finger 70, 82 or 88 for one of the control valves 52, 54 or 56. The
selector lever 20 is then depressed to open the selected one of the
control valves. Depressing the selector lever 20 also opens the
main water inlet valve 92 to provide a uniform flow of water from
the tempering tank 16 through the open one of the control valves
52, 54 or 56.
When the control valve 54 is opened by operating the selector lever
when it is in the center position of FIG. 3, cold or refrigerated
water flows directly through a water conduit or passage 140 to the
central nozzle 24 (See FIGS. 5 and 6). However, if lever 20 is
positioned to open control valve 52, water flows through a conduit
or passage 152 (FIG. 6) to the mixing device 36 where it is mixed
with a first drink concentrate from the container 32 (FIG. 2). This
mixture of the first drink concentrate and water then flows through
a passage 146 to the dispensing nozzle 26. Similarly, when the
selector lever 20 is positioned to open control valve 56, water
flows through a passage 150 to a mixing device 38 where it is mixed
with a second drink concentrate from the container 34. This mixture
of water and the second drink concentrate then flows through the
passage 152 to the dispensing nozzle 28 (see FIG. 4).
The mixing device 38 promotes an even mixing of the cold water and
drink concentrate. To this end, the second mixing device 38 induces
a flow of drink concentrate from the container 34 at a rate which
is proportional to the flow of water through the mixing device 38.
The flow of concentrate is advantageously induced by means of a
venturi 158 having a conical inlet 160 through which water from the
passage 150 flows to a cylindrical throat 162 and into a mixing
chamber or zone 164. Since the conical entrance portion of the
venturi 158 tapers toward the throat 162 which has a relatively
small diameter, water flows into the mixing zone 164 at a
relatively high speed. This high speed flow of water induces a
pressure reduction below atmospheric pressure which induces a flow
of the drink concentrate along a conduit 170 (FIG. 4) and into the
mixing zone 164 through a circular opening 174. The mixture of
drink concentrate and water then flows from the mixing zone 164
through the passage 152 to the nozzle 28.
The flow control device 36 (FIG. 6) is of the same construction as
the flow control device 38 and includes a venturi 180 which is
connected with a mixing chamber or zone 182, through a throat 184.
The first drink concentrate is conducted from the container 32 (see
FIGS. 1 and 2) to the mixing chamber or zone 182 through a conduit
190. Of course, the mixture of drink concentrate and water flows
from the mixing device 36 through the passage 146 (FIG. 6) to the
nozzle 26. Since the general principle of operation of the mixing
devices 36 and 38 is well known, the manner of operation of the
mixing devices 36 and 38 will not be further described herein to
avoid prolixity of description. However, it should be understood
that although it is preferred to utilize well formed venturis 158
and 180 to induce a flow of the concentrate into the mixing zones
164 and 182, orifices of a somewhat different configuration could
be utilized as long as they induce sufficient pressure reduction
and the resulting requisite concentrate flow.
It is contemplated that during use of the dispenser assembly 12, it
will be desirable to dispense drinks of different strengths, that
is drinks containing different percentages of drink concentrate.
Accordingly, the drink strength control devices 42 and 44 are
operable to vary the ratio of drink concentrate to water in the
mixture conducted from the mixing devices 36 and 38 to the
associated nozzles 26 and 28. To provide different ratios of water
to drink concentrate, the drink strength controls 42 and 44 are
operable to conduct water directly to the mixing zones 182 and 164
without passing the water through the venturi throats 184 and 162.
Of course, this additional or bypassed water tends to reduce the
rate flow of drink concentrates from the containers 32 and 34 to
the mixing chambers 182 and 164 with the result that somewhat
weaker drinks are dispensed from the nozzles 26 and 28.
To enable the drink strength control device 44 to vary the ratio of
drink concentrate to water in a mixture dispensed from the nozzle
28, the control device includes a valve 194 which is operated from
a closed position (shown in FIG. 6) through a range of partially
opened positions to a fully opened position by rotation of the knob
48. When the valve 194 is in the closed position, it blocks a flow
of water from the passage 150 through a passage 198 to the mixing
chamber or zone 164. Therefore, when the valve 194 is closed a
relatively strong drink is dispensed from the nozzle 28 upon
actuation of the selector lever 20 to open the valve 56.
If the knob 48 is rotated through half a turn, the valve 194 is
fully opened and a relatively large flow of water is conducted to
the mixing zone or chamber 164 without passing through the throat
162. This flow of water is conducted to the mixing zone through a
bypass passage 198. This bypassed water tends to reduce the rate at
which concentrate flows into the mixing zone 164 to reduce the
ratio of drink concentrate to water in the mixture dispensed from a
nozzle 28. Therefore, a relatively weak drink is dispensed from the
nozzle 28 when the valve 194 is open.
A drink of intermediate strength can be dispensed from the nozzle
28 by merely rotating the knob 48 part way from the relatively
strong position shown in FIG. 2 toward the relatively weak
position. This will cause a tapered end portion 202 (FIG. 6) of the
valve 194 to partially block the passage 198. Therefore, a limited
flow of water is bypassed around the throat 162 of the venturi 158.
Although it is preferred to utilize water bypassed from upstream of
the venturi 158, it should be understood that the water could be
obtained from other sources.
The drink strength control device 42 is of substantially the same
construction as the drink strength control 44 and includes a valve
206 which is operated between a fully closed position (illustrated
in FIG. 6) through a plurality of partially open positions to a
fully open position to vary the ratio of drink concentrate to water
in the drink dispensed from the nozzle 26. The knobs 46 and 48 are
advantageously provided with pointers 210 and 212 which cooperate
with indicia 216 (see FIG. 2) indicating the relative ratio of
water to drink concentrate to be dispensed from the nozzles 26 and
28.
A second embodiment of the drink strength control device is
illustrated in FIG. 7. The drink strength control device of FIG. 7
differs from the drink strength control device 44 of FIG. 6 in the
construction of the valve utilized to control the flow of water
through the bypass passage. Since the embodiment of the drink
strength control device illustrated in FIG. 7 is generally similar
to the embodiment of FIG. 6, similar elements will be designated
with similar numerals, the suffix letter "a" being associated with
the numerals of FIG. 7 to avoid confusion.
The drink strength control device 44a of FIG. 7 includes a control
valve 194a which controls a flow of water through a bypass passage
198a to a mixing chamber 164a. The valve 194a includes a tubular
valve wall 222 having an opening 224 through which water can pass
to the mixing chamber 164a when the valve 194a is is in the open
position shown in FIG. 7. Of course, rotation of the knob 48a
gradually moves the opening 224 out of alignment with the portion
of the passage 198a leading to the mixing chamber 164a to gradually
block a flow of water through the passage 198a. Thus, it can be
seen that although the valve 194a is constructed somewhat
differently than the valve 194, it functions to vary the rate of
flow of water through the bypass passage 198a to vary the strength
of the drink dispensed from the nozzle 28a in much the same manner
as in which the valve 194 varies the strength of the drink
dispensed from the nozzle 28. Of course, many other known types of
valves could be substituted for the valves 194 and 194a if
desired.
After the dispenser assembly 12 has been utilized for a period of
time the containers 32 and 34 will have to be refilled with drink
concentrate. To enable the level of drink concentrate in the
containers 32 and 34 to be inspected and to facilitate filling of
the containers, the containers are movable one at a time from the
retracted positions shown in FIG. 1 to an extended position (shown
in dashed lines in FIG. 4). In the extended position front or
leading walls 230 and 232 of the containers 32 and 34 are disposed
forwardly or outwardly of the nozzles 24, 26 and 28 to provide
access to the interior of the containers. Thus, as the container 34
is moved forwardly from the retracted position (shown in solid
lines in FIG. 4) toward the extended position (shown in dashed
lines in FIG. 4), a rear or trailing wall 236 of the container 34
is moved forwardly until the trailing or rear wall 236 engages a
stop member or projection 240 which is integrally formed with a
base or mounting plate 242 of the dispenser assembly 12.
The container 34 is held or retained in the retracted position,
shown in solid lines in FIG. 4, by a latch or retainer device 246
which is connected with the nozzle 28. The retainer device 246
includes a holding or hook arm 250 which engages a downwardly
projecting flange 252 on the front wall 232 of the container 34
when the container is in the retracted position. The hook or
retainer arm 250 is swung beneath the front flange 252 on the
container 34 (see FIGS. 1 and 4) to hold the front portion of the
container upwardly in the position shown in solid lines in FIG. 4.
The front flange advantageously includes a cam surface 254 (FIG. 2)
which is engaged by the retainer arm 250 to force the container 34
upwardly to the dispensing position as the hook arm 250 engages the
flange 250 to insure proper positioning of the container.
When the nozzle 28 is pivoted in a counterclockwise direction (as
viewed in FIG. 2) the hook arm 250 is swung out from beneath the
flange 252 on the front wall 232 of the container 34. This releases
a front end portion of the container for downward movement to
enable an elongated guide flange or lip 260 to move downwardly and
into engagement with an arcuate guide member 262 (as shown in
dashed line in FIG. 4). The container 34 is then supported in a
downwardly sloping position with the front wall 232 clear of the
nozzle 28 and a front lip on the baseplate 242. When the container
34 is in this downward sloping position, the rear wall 236 of the
container is raised upwardly so that it will engage the stop member
240 when the container 34 reaches the fully extended position shown
in dashed lines in FIG. 4.
When the container 34 is in the extended position, the interior of
the container can be readily inspected and drink concentrate added
to the container 34. The container 34 is advantageously made out of
a translucent material so that the level of drink concentrate in
the container can be visually ascertained with the container in the
retracted position. If desired, when the container 34 is in the
extended position the front portion of the container can be raised
slightly to move the rear wall 236 downwardly away from the stop
member 240. Once the rear wall 236 has cleared the stop member 240,
the container 34 can be withdrawn from the baseplate 242 for
cleaning or filling at a remote location.
It should be noted that when the container 34 is in the retracted
position as shown in solid lines in FIG. 4, a bottom wall 270 of
the container slopes downwardly toward a recess 276 which is
connected in fluid communication with the conduit 170. Therefore,
when the level of drink concentrate is relatively low, it will
accumulate in the recess 276 to enable the dispenser assembly 12 to
be operated for a relatively long time without refilling of the
container 34, and minimize unused concentrate.
To enable the container 34 to be moved between the retracted and
extended positions, the conduit 170 includes a fixed upper section
280 (FIG. 4) which is connected with the base 242 and leads to the
mixing zone or chamber 164 and a movable lower section 282 which is
integrally formed with the front wall 232 of the container 34. The
upper and lower conduit sections 280 and 282 are connected in fluid
communication by a resilient sleeve coupling 286. To provide for a
fluid tight connection between the lower conduit section 282 and
the upper conduit section 280, the lower conduit section includes a
cylindrical upwardly extending portion 290 which is telescopically
received in the coupling 286. It is understood that coupling 286
may be received in portion 290. This telescopic engagement between
the coupling 286 and conduit section 282 is maintained by the latch
arm 250 which holds the front portion of the container 34 upwardly
by engaging the outwardly projecting flange 252 on the front wall
of the container 34. Althought the coupling 286 is disposed on the
mounting plate 242 and the container 34 is moved relative to the
coupling, it should be understood that the coupling could be moved
with the container relative to the upper conduit section 280 if
desired.
When the container 34 is to be moved to the extended position, the
nozzle 28 is rotated, in the counterclockwise direction as shown in
FIG. 2, to move the retainer arm 250 out of engagement with the
flange 252. This enables the front portion of the container to be
moved downwardly to move the lower conduit section 282 out of
telescopic engagement with the coupling 286. The front guide 262 is
somewhat lower than a rear guide 294 so that the upwardly
projecting end portion 290 of the conduit section 282 clears the
coupling sleeve 286 when the guide flange 260 rests on the front
guide. A check valve 298 is provided in the coupling 286 to prevent
dripping when the container 34 is moved to the extended position
and to maintain liquid in the mixing device 38.
The container 32 is constructed in the same manner as is the
container 34 and cooperates with a resilient sleeve coupling 302 on
the baseplate 242 in the same manner as in which the container 34
cooperates with the sleeve coupling 286. The nozzle 26 can be
rotated in a counterclockwise direction, as viewed in FIG. 2, to
disengage a hook arm 303 from a flange 304 and release the
container 32 for outward movement from the retracted position to
the extended position after a lower conduit section which is
integrally formed with the container 32 has cleared the coupling
302 in the manner previously explained in connection with the
container 34. A stop member, similar to the stop member 240, is
engaged by a rear wall of the container 32 when it is in the
extended position.
During operation of the dispenser assembly, dripping is prevented
from the nozzles 24, 26 and 28 by venting the upper ends of the
nozzles to the atmosphere. This venting of the upper ends of the
nozzles 24, 26 and 28 releases the liquid in the nozzles for flow
into a glass or other receiving container at the end of a
dispensing operation. To provide for the venting action, a vent
passage 310 (FIG. 3) is formed in an outer wall 312 of a tube or
conduit leading from the mixing device 36 to the nozzle 26. This
vent passage results in the application of atmospheric pressure to
both sides of the liquid in the nozzle 28 so that the liquid can
flow freely from the nozzle. Similar vent passages 310 are formed
in the conduits or tubes leading to the nozzles 24 and 28 (FIGS. 4
and 5). Since the vent passages 310 enable the liquid to flow
freely from the nozzles 24, 26 and 28, the nozzles do not tend to
drip after the selector lever 20 is released and the open one of
the valves 52, 54 or 56 has closed under the influence of the
associated one of the spring fingers 70, 82 or 88.
After the dispenser assembly 12 has been used for a substantial
period of time, it is contemplated that it will be desirable to
clean the various operating components of the assembly. To
facilitate cleaning, the mixing devices 36 and 38 drink strength
control devices 42 and 44, and nozzles 24, 26 and 28 can be readily
disconnected from a main body 313 (see FIG. 6) of the dispenser
assembly 12. To disassemble the dispenser assembly 12 for cleaning,
the drink concentrate containers 32 and 34 are first removed from
the base 242 by moving the rear walls 236 of the containers clear
of the stops 240 (FIG. 4) when the containers are in the extended
positions. Once the containers 32 and 34 have been removed,
retaining fingers or arms 314 and 315 (FIGS. 2 and 3) are swung
upwardly from the retaining positions of FIGS. 4 and 5 to release a
front or forward section 316 (FIG. 6) which includes the mixing
devices 36 and 38 and drink strength controls 42 and 44, for
outward movement from the dispensing position of FIG. 6. As the
forward section 316 is pulled outwardly, connecting conduits 317,
318 and 319 are moved out of telescopic engagement with mating
sockets formed in the main body section 313. Also, the flexible
couplings 286 and 302 are moved out of engagement with U-shaped
slots formed in the forward portion of the mounting or support
plate 242.
Once the front section 316 has been disconnected from the body 313.
The front section can be easily disassembled to further facilitate
cleaning. Thus, the nozzles 24, 26 and 28 can be disconnected from
the passages 140, 146 and 152 so that they can be cleaned
separately. To facilitate disconnection of the nozzles, they are
removably secured to the associated conduits by engagement of
protuberances 320 with suitably formed slots in the nozzles 24, 26
and 28. The slots in the nozzles 26 and 28 have a generally
L-shaped configuration to enable the protuberances 320 to cooperate
with the short leg of the L-shaped slots during rotation of these
nozzles to move the latch arms 250 into and out of engagement with
the flanges 252. In addition, the drink strength flow control
valves 194 and 206 can be moved axially outwardly by releasing
spring type clip fingers which hold them in their normal operating
positions. Of course, the sleeve couplings 286 and 302 can be
disconnected from the upper sections of conduit to facilitate
cleaning the check valves located within the sleeve couplings.
To further facilitate cleaning of the dispenser assembly, the
selector lever 20 can be readily removed from the support member
62. To remove the selector lever or member 20, it is merely
necessary to remove a retaining pin or screw 321 (FIG. 5) and slide
the selector member forwardly to move a pivot post 322, which is
integrally formed with the selector lever 20, out of a forwardly
opening U-shaped slot in the support mounting 62. It should be
noted that a pair of stop arms 326 and 328 are integrally formed
with the selector member 20 to limit its pivotal movement relative
to the valves 52, 54 and 56 so that the selector member 20 stops
its rotational movement about the pivot post 322 in either a
clockwise or counterclockwise direction, as viewed in FIG. 3, with
one of the actuator arms 78 or 86 beneath one of the spring arms 82
or 88.
While the dispenser assembly 20 has been designed to be readily
disassembled for cleaning purposes, it should be understood that
this design enables it to be readily assembled at a factory or
other location. To facilitate mounting the dispenser assembly in a
refrigerator, support or mounting brackets 332 and 334 (FIG. 3)
which are fastened to a refrigerator wall, can be connected to the
base 242 with upstanding tabs disposed on either the left or right
hand side of the dispenser assembly for either a right or left hand
mounting.
From the foregoing description can be seen that the dispenser
assembly 12 is operable to dispense either water or a mixture of
water and one of a plurality of drink concentrates. To effect a
dispensing of a desired drink, whether it is a mixture of water and
a concentrate or just water, the selector lever 20 is pivoted to
locate an actuator arm 66, 78 or 86 to actuate a selected control
valve 52, 54 or 56. Simultaneously with actuation of one of the
control valves 52, 54 or 56, the selector lever 20 cams the
actuator lever 120 rearwardly to open the main or water inlet flow
control valve 92. Opening the main or water flow control valve 92
enables water to flow at a relatively constant rate into and out of
the tempering tank 16 in the manner illustrated schematically in
FIG. 8.
The flow of water from the tempering tank 16 enters the manifold
conduit 74 (FIG. 8) and flows through one of the control valves 52,
54 or 56 which is opened against the influence of its biasing
spring by depressing the selector lever 20. If water is to be
dispensed from the central nozzle 24, the control valve 54 is
opened and water is conducted directly to the nozzle 24 through the
conduit 140. However, if a drink mixture of a concentrate from
either the container 32 or the container 34 is desired, one of the
valves 52 or 56 is opened to conduct the water to a mixing device
36 or 38. A mixture of water and the selected concentrate then
flows to one of the nozzles 26 or 28 and into a glass or other
receiving container (not shown).
If a drink made up of a mixture of the concentrate in container 32
is to be dispensed and the ratio of drink concentrate to water is
to be varied, the knob 46 is turned to operate the valve 206 to
vary the rate at which water is bypassed around the venturi 180. If
the strength of the drink is to be increased, that is in larger
percentage of drink concentrate is to be added to the drink, the
knob 46 is turned to further close the valve 206 to reduce the rate
at which water is bypassed around the venturi 180. On the other
hand, if the ratio of drink concentrate to water is to be
decreased, the knob 46 is turned to increase the rate at which
water is bypassed around the venturi 180. The mixing device 38 and
drink strength control 40 works in the same manner as does the
mixing device 36 and drink strength control 42 to mix a selected
ratio of drink concentrate and water in the mixing zone or chamber
164 before it is dispensed from the nozzle 28.
Although the drink dispenser 12 has been illustrated herein in
association with two containers 32 and 34 for dispensing only two
different drink concentrates from the nozzles 26 and 28, it should
be understood that other containers for holding other drink
concentrates could be provided. If this was done, the number of
operating positions to which the selector lever 20 can be moved
would be increased by corresponding amount. However, it should be
understood that the number of actuator arms provided in association
with the selector lever 20 need not necessarily be increased since
one of the existing actuator arms could be utilized to effect
actuation of any one of a plurality of valves. Also, it should be
understood that the various drinks could be dispensed from a single
nozzle if desired. Of course, the particular type of drink
concentrate dispensed from the containers 32 and 34 can be varied.
For example, a fresh fruit concentrate could be provided in one of
the containers and a concentrated syrup provided in the other
container.
* * * * *