Patent Application
20220402743
The present invention relates to beverage dispensers, and in particular to the cleaning of beverage dispensers. Specifically, a method and apparatus are disclosed for cleaning a dispenser which dispenses beverages.
Restaurants, bars, and other types of food establishments use a dispenser in order to dispense beverages.
Dispenser 100 is coupled to a plurality of different beverages (or beverage ingredients) via inlet hose 102. Within inlet hose 102, a plurality of tubes (not shown) receive beverages (or beverage ingredients) from different sources. For example, one of the tubes within inlet hose 102 may be connected to a water source so that water can be dispensed from dispenser 100. Another tube within inlet hose 102 may be connected to a source of carbonated water. Other tubes within inlet hose 102 may be connected to containers storing concentrated beverage ingredients (e.g. concentrated soda flavorings). Dispenser 100 may mix one of the beverage ingredients with carbonated water to produce various types of flavored sodas (for example).
Pushbuttons 108 thus each correspond to various beverages such as water, carbonated water, or various flavored sodas. If pushbutton 108 corresponding to water or carbonated water is depressed, then water or carbonated water is dispensed through nozzle 106. If pushbutton 108 corresponding to a flavored soda is depressed, then concentrated soda flavoring and carbonated water are mixed within dispenser 100 and dispensed through nozzle 106. An exemplary dispenser is disclosed in Schroeder, U.S. Pat. No. 7,658,006, which is hereby incorporated by reference in its entirety.
At least some of the concentrated soda flavorings received by dispenser 100 include corn syrup as a sweetener. Thus, as various flavored sodas are dispensed from nozzle 106, a residue which includes corn syrup remains on various surfaces of nozzle 106. Over time, the residue builds and nozzle 106 becomes unsanitary.
A method and apparatus cleans a plurality of beverage dispensers which sit in respective holsters. Cleaning solution conduits are oriented to spray cleaning solution towards respective tops of holsters. At least one fluid valve and/or pump alternatively permits and blocks a cleaning solution to flow to the cleaning solution conduits, respectively. A power supply provides flow signals to the at least one fluid valve and/or pump, respectively, wherein the valve(s) and/or pump transitions between permitting and not permitting flow of cleaning solution responsive to transitioning of the flow signals, respectively. A transmitter signals the power supply to transition the flow signals to cause the fluid valve(s) and/or pump to permit the cleaning solution to flow to the cleaning solution conduits.
In another embodiment, a cleaning system for a beverage dispenser that uses hot water is provided. The cleaning system includes a solenoid including an intake port and an outlet port. A controller selectively operates the solenoid. A pressurized water supply is connected to the intake port of the solenoid. A housing is configured to receive a beverage dispensing assembly adjacent to a spray nozzle that is in fluid communication with the outlet port of the solenoid and sprays the beverage dispensing assembly in response to the controller activating the solenoid.
The foregoing Summary and the following detailed description will be better understood when read in conjunction with the appended drawings, which illustrates a preferred embodiment of the invention. In the drawings:
Over time, as dispenser 100 is used, residue builds on surfaces of nozzle 106, and that residue may have adverse consequences. Bacteria and/or mold may grow on the residue. The residue may attract insects such as fruit flies. When beverages are contaminated with bacteria, mold or insects, the beverages can cause sickness and disease. Furthermore, the taste of the beverage being dispensed through the residue may be adversely affected. The residue can block beverages flowing through nozzle 106, thus reducing the flow rate of beverages being dispensed. This may increase the amount of time needed to dispense beverages. Residue creating a blockage within dispenser 100 can alter the ratio of carbonated water and concentrated soda flavoring which are mixed together, thus causing a flavored soda to be dispensed which has either not enough flavoring or too much flavoring; the result is the dispensing of a beverage which does not have its expected taste. A buildup of debris over time can also shorten equipment life.
The residue which collects on surfaces of nozzle 106 can thus have numerous consequences, including:
If beverages do not taste good, then customers are dissatisfied, and they may stop purchasing beverages at the establishment that is selling the beverages (or may even stop being customers of the establishment entirely). Furthermore, poor reviews of the establishment may appear on social media if the beverages do not taste good;
The residue on the surfaces of the dispenser looks unappealing and unappetizing, and customers will not want to purchase or drink beverages dispensed through the residue;
A “board of health” type of inspection of dispenser 100 may result in a government entity prohibiting use of the dispenser until it has been adequately cleaned;
If the residue slows down beverage dispensing, then the rate at which beverages are sold may be reduced. This reduction can adversely affect profits.
The residue can cause soda to be dispensed with not enough or too much carbonated water.
The residue can shorten equipment life.
It is thus desirable for nozzle 106 to be clean and for any residue which appears on nozzle 106 to be removed.
In a bar setting, and as shown in
As shown in
With reference to
In an exemplary embodiment of the present invention, a mechanism (not shown) may be used to assist keeping nozzle 106 within holster 200. For example, dispenser 100 and holster 200 may each include respective magnets which attract each other and therefore keep dispenser 100 in holster 100. Holster 100 may alternatively include a tab which extends along the side and top of dispenser 100 and which helps to keep nozzle 106 within holster 200.
While the mechanism described above may be used to assist keeping nozzle 106 within holster 200, there may be disadvantages of such a mechanism as well. For example, dispenser 100 may be inserted into holster 200 and withdrawn from holster 200 multiple times over a short period of time. If a bar tender is serving a large number of customers, the bar tender may need to insert dispenser 100 into holster 200 very quickly. Alternatively, the bar tender may need to withdraw dispenser 100 from holster 200 very quickly. In such a situation, it may be desirable to not have any mechanical mechanisms which assists in keeping dispenser 100 in holster 200. Thus, for example, it may be desirable for the shape of nozzle 106 to simply guide dispenser 100 into holster 200. Once nozzle 106 has been guided into holster 200, it may be desirable for only the weight of dispenser 100 to keep dispenser 100 (or a portion thereof such as nozzle 106) mated to holster 200. By using only the weight of dispenser 100 to keep dispenser 100 mated to holster 200, dispenser 100 can be withdrawn from holster 200 very quickly.
Holster 200 includes outlet 204. Outlet 204 permits any liquids within compartment 201 to drain out. A tube may be connected to outlet 204 and the tube may lead to a drain, such as a public drain provided by a municipality. It is thus desirable that any liquids within compartment 201 be discarded. It is considered more desirable to discard liquids that are within compartment 201 then to reuse those liquids. In other words, any liquids removed from compartment 201 are desirably not reintroduced back into compartment 201 at a later time. Therefore, any liquids removed from compartment 201 are disposed of, for example via a public drain.
Outlet 204 is desirably situated so that it receives liquids from the lowest point within compartment 201. In this manner, compartment 201 is fully drained.
Inlet 206 is also included. Inlet 206 receives liquid under pressure, thus causing the liquid to be directed upward within compartment 201. The liquid which is received by inlet 206 is for cleaning nozzle 106 and will be more fully described below.
Inlet 206 is desirably configured so that liquid flowing through inlet 206 flows through the center of compartment 201. Thus, inlet 206 is positioned at the center of the bottom of compartment 201. Fluid flowing under pressure through inlet 206 flows along dotted line C shown in
Within compartment 201, and attached to the exit of inlet 206, a spray nozzle 214 may be situated. This optional spray nozzle may direct fluid flowing through inlet 206 into any desired pattern in order to clean nozzle 106. In an exemplary embodiment of the present invention, a spray nozzle with a spray pattern of 25 degrees may be used.
In many restaurants, there is more than one dispenser 100. Many restaurants have multiple dispensers 100 in order to accommodate the number of customers who wish to be served beverages.
Cleaning apparatus 300 shown in
Controller 335 instructs valves 310a, 310b to open and close via power supply 320. In an exemplary embodiment of the present invention, power supply 320 is a PS-6012 manufactured by Altech Corp. and is installed and operated in accordance with the Altech Corp. PS-60 data sheet which is hereby incorporated by reference.
Controller 335 signals power supply 320 via controller outputs 331a, 331b. Power supply 320 subsequently provides 12 volt signals to valves 310a, 310b responsive to being signaled by outputs 331a, 331b respectively. Thus, a positive signal on controller output 331a causes power supply 320 to transmit a 12 volt signal on power supply output 321a. Furthermore, a positive signal on controller output 331b causes power supply 320 to transmit a 12 volt signal on power supply output 321b. When the positive signal is removed from controller output 331a, output 321a ceases to provide a 12 volt signal. When the positive signal is removed from controller output 331b, output 321b ceases to provide a 12 volt signal.
Valves 310a, 310b are valves which regulate flow of liquid. In an exemplary embodiment of the present invention, valves 310a, 310b are 12 VDC solenoid valves (i.e. valves with 12 volt relays) plastic ½″ manufactured by Zilong. When valves 310a, 310b receive 12 volt signals on their respective control inputs, the valves open and fluid provided at the valves' input is allowed to flow out the valves' output. When the 12 volt signals are removed from each valves' control inputs, the valves close and fluid is not permitted to flow out of each valves' output. A desirable flow rate for the output of each valve is, for example, 1 gallon per minute.
Thus, power supply outputs 321a, 321b are connected between power supply 320 and valves 310a, 310b. When power supply 320 places a 12 volt signal on power supply output 321a, valve 310a opens. When power supply 320 places a 12 volt signal on power supply output 321b, valve 310b opens. When the respective 12 volt signals are removed from each respective power supply output, the respective valve closes.
Valves 310a, 310b receive fluid via valve inlets 311a, 311b respectively. Valve inlets may be pipes or tubes (e.g. flexible tubes) having, for example, a diameter of ⅜″. Valve inlets 311a,b receive fluid via pressurized fluid source 315. Pressurized fluid source 315 includes branch 316 which directs fluid under pressure to valve inlets 311a,b. Thus, when valve 310a opens, fluid from valve inlet 311a is permitted to flow through valve outlet 312a. Furthermore, when valve 310b opens, fluid from valve inlet 311b is permitted to flow through valve outlet 312b. Valve outlet 312a is connected to inlet 206a and valve outlet 312b is connected to inlet 206b. Thus, when valves 310a, 310b open, fluid is directed to holsters 200 in order to clean nozzles 106.
Pressurized fluid source 315 delivers pressurized fluid from a pressurized fluid source. The pressurized fluid source can be, for example, pressurized water from a municipal water source. Alternatively, the pressurized fluid source can be otherwise. For example,
The fluid used to clean nozzle 106 may be for example a fluid which is safe for human consumption. Thus, a food grade solution is desirable as the fluid to be stored in tank 410. Exemplary food grade solutions include chlorine bleach (diluted 1 teaspoon to 1 quart of water, hydrogen peroxide (3%), and white distilled vinegar (5%)). Other liquids may be used as the fluid within tank 410. Exemplary fluids which may be used within tank 410 include, for example: a) citric acid (with an exemplary concentration of between 2.5% and 35%); b) lactic acid (with an exemplary concentration of between 2.5% and 60%); and c) peracetic acid (with an exemplary concentration of between 1% and 22%). Other food sanitizing surface agents may also be used. Water may also constitute a “fluid.” Furthermore, fluid source 315 may optionally include a y-junction 420 and valves 416, 418 which allows the fluid flowing into pressurized fluid source 315 to alternate between the fluid stored in tank 410 and water obtained from a commercial water supply 430. Controller 335 can thus allow solution from tank 410 to clean nozzle(s) 106 for a first amount of time (by actuating valve 416), and to then allow water from a commercial water source to clean nozzle 106 for a second amount of time (by actuating valve 418).
In a further alternative embodiment of the present invention, tank 410 is eliminated and all cleaning is done simply using fluid from water source 430. Water source 430, may be, for example, a municipal water source. If the municipal water source is supplying water with sufficient pressure, then the pressure provided by the municipal water source may be sufficient to clean nozzle 106.
In a further exemplary embodiment of the present invention, an additional pump 435 is used with the water from water source 430 in order to increase the pressure of water being received from water source 430. Pump 435 may be used, for example, on demand. Thus, for example, a water pressure of 40 PSI from water source 430 may be desirable to clean nozzle 106. Pump 435 may be omitted if the water pressure from water source 430 is approximately 40 PSI or higher. The pump 435 may be included if the water pressure from water source 430 is below 40 PSI. If the pump 435 is operated on an on demand basis, the pump 435 is activated if water pressure from water source 430 is below 40 PSI and the pump 435 is deactivated (allowing water to pass through without boosting water pressure) if water pressure from water source 430 is 40 PSI or greater. A water pressure of 40 PSI is merely exemplary, and it is understood that a water pressure at which operation of pump 435 is desirable may be higher or lower depending upon individual circumstances.
Pump 414 and valve 416 may be provided. Fluid from a source of fluid pumped with pressure via pump 414 to valve 416. When valve 416 is open, fluid under pressure arrives at pressurized fluid source 315. When valve 416 is closed, fluid is prevented from arriving at pressurized fluid source 315. Valve 416 and pump 414 can be controlled by controller 335 and power supply 320 as described above.
Pump 414 may be provided and valve 416 may be omitted. When pump 414 is on, fluid from a source of fluid is pumped with pressure via pump 414 to pressurized fluid source 315. When pump 414 is off, fluid from a source of fluid (not under pressure) is prevented from arriving at pressurized fluid source 315. Pump 414 can be controlled by controller 335 and power supply 320 as described above.
Valve 416 may be provided and pump 414 may be omitted. This embodiment may be used if the source of fluid is providing fluid to valve 416 under pressure. Fluid may be provided under pressure if the source of fluid is, for example, a municipal water supply. As previously explained, it is desirable for the amount of pressure in the fluid transmitted to pressurized fluid source to be sufficient to clean residue off of nozzles 106. Thus, when valve 416 is open, fluid from a source of fluid flows to pressurized fluid source 315. When valve 416 is closed, fluid from a source of fluid is prevented from arriving at pressurized fluid source 315.
Each of the above alternative embodiments enables pressurized fluid from a single source to arrive at pressurized fluid source 315, to flow through branch 316, and to then be sprayed onto multiple nozzles 106 via valve outlets 312a, 312b.
In accordance with an exemplary embodiment of the present invention, it is desirable to allow fluid to be sprayed out of valve outlets 312a, 312b at predetermined times. Thus, when a predetermined time is reached (e.g. 4 AM, 8 AM etc.) valves 310a, 310b are opened and pressurized fluid flows out of valve outlets 312a, 312b and towards nozzle 106. The predetermined time may be chosen based upon times that beverages are typically not being served from dispenser 100 (such as a when a bar or restaurant is closed). At such times, nozzles 106 are resting in holsters 200 as they are not being used.
As previously explained, it may be desirable for dispenser 100 to be lifted out of holster 200 as quickly as possible. Furthermore, it may be desirable for dispenser 100 to be inserted into holster 200 (and thus “mated” to holster 200) as quickly as possible. This potential need to quickly mate dispenser 100 to holster 200 and to quickly remove dispenser 100 to holster 200 may add to the desirability of opening valves 310a, 310b based on time, and to not rely on a sensor. Thus, in this exemplary embodiment, there is no sensor that is needed to determine whether dispenser 100 is mated to holster 200 so that cleaning of nozzle 106 may be initiated. A sensor may have the disadvantage of not accurately detecting whether dispenser 100 is mated to holster 200. If a sensor does not detect that dispenser 100 is mated to holster 200 (even though in fact it is mated), then nozzle 106 will not be cleaned. In the exemplary embodiment, the possibility of a sensor not correctly determining that dispenser 100 is mated to holster 200 is a non-issue because no sensor is used for such detection. Nozzle 106 is simply cleaned with pressurized fluid from valve outlets 312a, 312b at a time when dispenser 100 is typically not being used.
In an exemplary embodiment of the present invention, in order to ensure that sufficient pressure is delivered to each nozzle 102, valves 310a, 310b can be opened sequentially instead of at the same time. Thus, valve 310a can be opened, kept open, and closed before valve 310b is opened, kept open and closed.
While the above exemplary embodiment illustrates controller 335, it is understood that controller 335 can be replaced with other methods and apparatus for controlling cleaning apparatus 300. For example, controller 335 can be located at a remote site and can communicate with transmitter 330 via a Wi-Fi connection. Thus, a Wi-Fi receiver can receive signals over a wireless connection and can then signal power supply 320 to open and close valves in order to perform nozzle cleaning. It is understood that other forms of communication (wired and wireless) may also be used.
In actual practice, it is desirable for power supply 320 and controller 335 (or a Wi-Fi receiver if power supply 320 is controlled remotely) to be mounted in a box, such as a box with a screw on panel, in order to protect power supply 320 and controller 335 from tampering. Valves 310a and 310b can be mounted, for example, next to such a box and near tank 410 and/or a commercial water supply. The box and valves 310a, 310b can be located away from the bar area in order to avoid unnecessary crowding of the bar area. Valve outlets 312a, 312b can be routed through walls and/or floors to be connected to inlet 206. In this manner, power supply 320 and controller 335 can be placed in a desirable location in order to clean a plurality of dispensers 100 located in respectively different physical locations.
In an alternative embodiment of the present invention, the fluid that is flowing through valve outlets 312a, 312b can be heated. In this manner, effectiveness of the fluid in disinfecting nozzle 106 can be enhanced. A fluid heating mechanism (for example an instant hot water dispenser manufactured by InSinkErator) can be used to heat fluid before it reaches nozzle 106. Exemplary locations to place an instant hot water dispenser include along valve outlets 312a, 312b, valve inlets 311a, 311b, or anywhere before or after valve 416 and/or valve 418.
The above description and illustrations show fluid flowing into two valve outlets 312a, 312b via branch 316. It is understood, that the description of two valve outlets is merely exemplary, and the actual number of valve outlets may be two or greater. In this manner, two or more nozzles 106 of respective dispensers 100 can be included in accordance with the exemplary embodiments set forth above.
The above description describes opening valves and/or engaging a pump for a certain amount of time in order to clean nozzles 106. One or ordinary skill in the art will recognize that there are methods for determining how much cleaning fluid is sprayed on each nozzle 106. For example, instead of measuring the amount of time fluid is being sprayed onto nozzles 106, one can spray cleaning fluid onto nozzles 106 based on the amount of cleaning fluid being sprayed. Thus, for example, a dosing pump can be used to deliver a certain amount of cleaning fluid to nozzles 106. Permitting and then stopping cleaning fluid from spraying onto nozzles 106 can thus be a function of the amount of cleaning fluid sprayed, the amount of time during which cleaning fluid is sprayed, or both.
The method and apparatus described above provides numerous advantages over the prior art:
The apparatus described above is attached to a holster using tubes. Therefore, the controller, power supply and valves can be located at a location away from holster 200. This is desirable because the area behind a bar is very crowded with machinery and beverages. The area under holster 200 can be kept clear for other machinery and beverages since fluid supply and fluid drain lines may be all that is required to be connected to holster 200. Thus, for example, controller 335 and power supply 320 may be located in a place which is away from customers and/or away from directly behind a bar. Controller 335 and power supply 320 can be housed in a “Bud” box and valves 310a, 310b can be located near the “Bud” box. Valve outlets 312a, 312b can be comprised of many feet of tubing. The tubing can be hidden under a bar counter and the tubing can extend to each dispenser 100. In this manner, multiple nozzles 106 can be cleaned without placing the equipment needed to clean nozzles 106 in inconvenient locations where a bar tender is attempting to work. The length of the tubing may determine the amount of power desirable in pump 414 to be able to pump fluid to each holster 200 to clean each nozzle 106.
Because controller 335 can begin allowing cleaning fluids to clean nozzle(s) 106 at any time, it is not necessary to detect whether nozzle 106 is in holster 200. Mechanisms to determine if nozzle 106 is in holster 200 can be expensive, require modifications to dispenser 100, and may not function correctly if such sensors are not properly engaged. With the exemplary embodiment described above, cleaning fluid can be directed at nozzle(s) 106 at a time that nozzle(s) 106 will normally be in their respective holster(s). Exemplary times when nozzle(s) 106 will be in their respective holster(s) will be times when a bar or restaurant is normally closed, such as 10 AM (for a bar) or 4 AM (for a restaurant).
By streaming fluid at nozzles 102 when the bar or restaurant is closed, it is unnecessary to clean nozzles 102 after each use. When the bar or restaurant is closed and nozzles 102 are not being used, fluid can be directed to nozzles 102 for an extended period of time without interfering with a bartenders need to use the dispenser, especially during a busy time in the bar or restaurant.
As shown in
In one embodiment, the spray nozzle 562 is a polyvinylidene fluoride (PVDF) spray nozzle. In another embodiment, the spray nozzle 562 is a stainless steel nozzle. The spray nozzle 562 provides hot water to the beverage dispensing assembly 560, more specifically a beverage gun dispenser, to clean the beverage dispensing assembly 560 of any residue. The fluid provided by the spray nozzle 562 is hot water, which is effective at breaking up debris, residue, and sugar. The controller 530 is programmable to run a timed cycle. In a preferred embodiment, the cleaning system 500 cycles on for one minute, and off for one minute for a total of six cycles per one day. The cleaning system 500 and the controller 530 can be programmed to only run during non-business hours. The controller 530 includes a 12 volt 2 amp power adapter, and an AC to DC converter to supply a single channel 12 volt electronic timer. A DIN rail 531 is provided for the controller 530. A diode 525 is also provided for the controller 530.
An intake tube 526 connects the pressurized water supply 540 to the intake port 522 of the solenoid 520, and the intake tube 526 has an inner diameter of at least ⅜ inches. A dispensing tube 528 connects the outlet port 524 of the solenoid 520 to the spray nozzle 562, and the dispensing tube 528 has an inner diameter no greater than ¼ inches. In a more preferred embodiment, the inner diameter of the dispensing tube 528 is no greater than 11/64 inches. The inner diameter of the intake tube 526 is at least 50% larger than an inner diameter of the dispensing tube 528.
A drainage line 580 is connected to the beverage dispenser 510 and provides drainage for water sprayed from the spray nozzle 562. The drainage line 580 is connected to a drainage port 582 of the beverage dispenser 510.
A secondary dispensing tube 628 extends from a T-fitting connector 532 provided between the dispensing tube 528 and a spray nozzle tube 534. The secondary dispensing tube 628 can be provided for a secondary beverage dispenser (as shown in
The embodiments of
While the present invention has been described herein with reference to exemplary embodiments, it should be understood that the invention is not limited thereto. Those skilled in the art with an access to the teachings herein will recognize additional modifications, applications, and embodiments within the scope thereof and additional fields in which the invention would be useful.
The Summary and Abstract sections may set forth one or more but not all exemplary embodiments of the present invention as contemplated by the inventor(s), and thus, are not intended to limit the present invention and the appended claims in any way.
The present invention has been described above with the aid of functional building blocks illustrating the implementation of specified functions and relationships thereof. The boundaries of these functional building blocks have been arbitrarily defined herein for the convenience of the description. Alternate boundaries can be defined so long as the specified functions and relationships thereof are appropriately performed.
The foregoing description of the specific embodiments will so fully reveal the general nature of the invention that others can, by applying knowledge within the skill of the art, readily modify and/or adapt for various applications such specific embodiments, without undue experimentation, without departing from the general concept of the present invention. Therefore, such adaptations and modifications are intended to be within the meaning and range of equivalents of the disclosed embodiments, based on the teaching and guidance presented herein, it is to be understood that the phraseology or terminology herein is for the purpose of description and not of limitation, such that the terminology or phraseology of the present specification is to be interpreted by the skilled artisan in light of the teachings and guidance.
The breadth and scope of the present invention should not be limited by any of the above-described exemplary embodiments, but should be defined only in accordance with the following claims and their equivalents.
This application is a continuation of U.S. Non-Provisional patent application Ser. No. 15/278,942 filed on Sep. 28, 2016, which is incorporated herein by reference as if fully set forth.
| Number | Date | Country | |
|---|---|---|---|
| Parent | 15278942 | Sep 2016 | US |
| Child | 17891340 | US |
