EP1094027A1 - High pressure pneumatic beverage dispensing system - Google Patents
High pressure pneumatic beverage dispensing system Download PDFInfo
- Publication number
- EP1094027A1 EP1094027A1 EP99120677A EP99120677A EP1094027A1 EP 1094027 A1 EP1094027 A1 EP 1094027A1 EP 99120677 A EP99120677 A EP 99120677A EP 99120677 A EP99120677 A EP 99120677A EP 1094027 A1 EP1094027 A1 EP 1094027A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- water
- tank
- carbonator tank
- gas
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D1/00—Apparatus or devices for dispensing beverages on draught
- B67D1/0042—Details of specific parts of the dispensers
- B67D1/0057—Carbonators
- B67D1/006—Conventional carbonators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D1/00—Apparatus or devices for dispensing beverages on draught
- B67D1/0042—Details of specific parts of the dispensers
- B67D1/0057—Carbonators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D1/00—Apparatus or devices for dispensing beverages on draught
- B67D1/08—Details
- B67D1/10—Pump mechanism
- B67D1/101—Pump mechanism of the piston-cylinder type
- B67D1/102—Pump mechanism of the piston-cylinder type for one liquid component only
- B67D1/103—Pump mechanism of the piston-cylinder type for one liquid component only the piston being driven by a liquid or a gas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
- B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
- B67D1/00—Apparatus or devices for dispensing beverages on draught
- B67D1/08—Details
- B67D1/0801—Details of beverage containers, e.g. casks, kegs
- B67D2001/0827—Bags in box
Definitions
- the present disclosure relates generally to a beverage dispensing system configured for portable or fixed installations. More particularly, the present disclosure relates to a self-contained, high pressure pneumatic beverage dispensing system that is especially adapted for use on railcars, ships, and the like, as well as for installation in golf carts and other such small vehicles.
- beverage dispensing systems have required electrical or gasoline power. Therefore, these systems tend to be bulky and usually are unsuitable for portable applications.
- conventional beverage dispensing systems comprise a high pressure carbonator tank plumbed to a carbon dioxide (CO 2 ) cylinder through a pressure regulator in which the pressure to be supplied to the carbonator tank is reduced to approximately 90 pounds per square inch (psi).
- a motorized pump plumbed to a fixed water tap system is used to pressurize the water supplied to the tank to approximately 200 psi.
- the high pressure water flows into the carbonator tank, overcoming the rising pressure of the CO 2 gas contained therein.
- As the carbonator tank fills with this high pressure water a pocket of CO 2 gas that exists above the water is compressed, forcing the CO 2 gas to be absorbed into the water, thereby creating carbonated water.
- these conventional beverage dispensing systems require a constant source of power to operate the pump motor, use of such systems is generally limited to fixed installations.
- the present disclosure relates to a self-contained high pressure pneumatic beverage dispensing system.
- the system comprises a carbonator tank for facilitating absorption of CO 2 gas in water to produce carbonated water, a source of CO 2 gas under high pressure, the source of CO 2 gas in fluid communication with the carbonator tank so as to fill the carbonator tank with CO 2 gas, a source of water under high pressure and in fluid communication with the carbonator tank so as to fill the carbonator tank with water, at least one pneumatic pump in fluid communication with the source of CO 2 gas, at least one liquid reservoir in fluid communication with the at least one pneumatic pump, and a beverage dispenser valve in fluid communication with the carbonator tank and the at least one liquid reservoir, wherein the beverage dispenser valve can dispense carbonated water and/or the liquid held in the at least one liquid reservoir when activated by the operator.
- the at least one liquid reservoir comprises a bag-in-box container and the pneumatic pump comprises a vacuum pump that can draw liquid from the container and urge it toward the dispenser valve when activated by the operator.
- FIG. 1 is a schematic view of a first embodiment of a self-contained high pressure pneumatic beverage dispensing system.
- FIG. 2 is a cut-away side view of the high pressure carbonator tank used in the beverage dispensing system of FIG. 1.
- FIG. 3 is a cut-away side view of the carbonator tank of FIG. 2 with a pneumatic water level switch mounted thereto (and with all inlet and outlet valves removed), this switch also shown in cut-away view to depict the activated or fill position of the pneumatic water level switch.
- FIG. 4 is a partial side view of the carbonator tank of FIG. 2 with the pneumatic water level switch of FIG. 3 in cut-away view to depict the inactivated or full position of the pneumatic water level switch.
- FIG. 5 is a schematic view of a second embodiment of a self-contained high pressure pneumatic beverage dispensing system.
- FIG. 6 is a partial cut-away view of the high pressure water pump used in the beverage dispensing system of FIG. 5 depicting the rodless piston contained within the cylindrical tube of the water pump.
- FIG. 7 is a schematic view of an alternative carbonator tank and filling system.
- FIG. 8 is schematic view of another alternative carbonator tank and filling system.
- FIG. 1 is a schematic view of a first embodiment 10 of the self-contained high pressure pneumatic beverage dispensing system.
- the system generally comprises a source 12 of gas, typically, although not necessarily, carbon dioxide (CO 2 ) at high pressure, a source 14 of high pressure water, a high pressure carbonator tank 16, and a beverage dispensing valve 18.
- the source 14 of CO 2 at high pressure typically comprises a conventional refillable gas storage tank 20 that is filled with pressurized CO 2 gas.
- the pressurized CO 2 gas contained within the gas storage tank 20 is used to both carbonate water in the carbonator tank 16 as well as to pressurize and propel the water to be supplied to the carbonator tank.
- a gas shut-off valve 22 When the gas shut-off valve 22 is opened, CO 2 gas travels through a gas outlet line 24 and is supplied to three separate gas pressure regulators 26, 28, and 30.
- the gas traveling through the first pressure regulator 26 is reduced in pressure to approximately 90 pounds per square inch (psi) to 110 psi and then exits the pressure regulator to enter a carbonator tank supply line 32.
- the carbonator tank supply line 32 directs the CO 2 gas to a gas inlet check valve 34 of the high pressure carbonator tank 16 so that the carbonator tank can be filled with pressurized CO 2 gas.
- the CO 2 gas that travels through the second gas pressure regulator 28 is reduced in pressure to approximately 25 psi to 60 psi. After exiting the second gas pressure regulator 28, the CO 2 gas flows into a carbonator tank water level switch line 36.
- the water level switch line 36 is connected to a carbonator tank water level switch 40, the configuration and operation of which is described in detail hereinafter.
- Each pump 43 can comprise a vacuum pump of conventional design which comprises an interior diaphragm (not shown) which is connected to an inner reversible value (not shown).
- Each pump 43 is configured such that, when supplied with pressurized gas, the diaphragm reciprocates back and forth under the control of the reversible valve within the pump so as to draw liquid into the pump through an inlet 45 and expel the drawn liquid out from the pump through an outlet 47. As indicated in FIG.
- the inlets 45 are connected to suction lines 49 that connect the pumps 43 to liquid reservoirs 51 which, for instance, comprise bag-in-box containers holding soft drink syrups and/or juice concentrates.
- liquid reservoirs 51 which, for instance, comprise bag-in-box containers holding soft drink syrups and/or juice concentrates.
- the outlets 47 are supply lines 46 that connect the pumps 43 to a cold plate 48 in which the syrup or concentrate can be cooled to an appropriate serving temperature. Accordingly, when operating, each pump 43 draws liquid from its associated bag-in-box container 51 and urges the liquid through the supply line 46 to the cold plate 48.
- the pressure on both sides of the vacuum pump diaphragm equalizes, i.e. the pressure of the gas supplied by line 42 equals the pressure in line 46, the pump will stall.
- the CO 2 gas supplied to the third gas pressure regulator 30 is lowered in pressure to approximately 175 psi to 225 psi.
- the CO 2 gas is ported through a high pressure gas supply line 50 that supplies gas pressure to the pressurized water source 14 of the system.
- the water source 14 comprises a high pressure water tank 52.
- this water tank 52 typically is constructed of a strong metal such as stainless steel.
- a pliable diaphragm 54 Inside the water tank 52 is a pliable diaphragm 54 that separates the interior of the water tank into two separate chambers 56 and 58.
- the upper, or water, chamber 56 of the water tank is adapted to store water that will be supplied to the carbonator tank 16 for carbonization.
- the lower, or gas, chamber 58 is adapted to receive high pressure gas that is used to pressurize the water contained in the upper chamber 56.
- the pliable diaphragm 54 completely isolates each chamber from the other such that no mixture of the water and CO 2 gas can occur.
- a water chamber line 60 Connected to the water chamber side of the water tank 52 is a water chamber line 60.
- the water chamber line 60 can be used to refill the water chamber 56 of the water tank 52.
- a refill inlet check valve 62 connected to one branch of the water chamber pipeline 60 is connected to a source of water having positive head pressure which, depending upon personal preferences, can be a source of purified water or a standard tap water source. It will be understood that refilling should only be attempted when the water tank is in a depressurized state.
- a three-way vent valve 59 Positioned along the high pressure gas supply line 50 between the third gas pressure regulator 30 and the water tank 52 is a three-way vent valve 59.
- the three-way vent valve 59 is manually operable to control the pressurization or depressurization of the gas chamber 58 of the water tank.
- the three-way vent valve 59 directs high pressure CO 2 gas into the gas chamber 58 of the water tank 52. This high pressure gas urges the pliable diaphragm 54 against the volume of water contained within the water chamber 56 to increase the pressure of the water to a level within the range of approximately 175 psi to 225 psi.
- the three-way vent valve 59 is manually switched to a closed position in which the supply of high pressure CO 2 gas to the tank is shut-off, and the high pressure gas contained in the gas chamber of the water tank is vented to the atmosphere to relieve the pressure therein.
- this gas is first directed to a first vent line 65 which leads to a diffuser 67 which, as is known in the art, gradually diffuses the vented gas into the atmosphere to reduce noise.
- the water chamber line 60 is further used to transport the pressurized water supplied by the water tank in two separate directions.
- a first direction the water is taken to a water valve 64 that is positioned intermediate the water tank 52 and the carbonator tank 16 along the water flow path existing between these two tanks.
- the water valve 64 is pneumatically actuated to open or close to permit or prevent the flow of water therethrough.
- the water valve 64 comprises a normally closed, gas actuated, high pressure bellows valve. Considered suitable for this use are HB Series bellows valves manufactured and commercially available from by Nupro. Coupled with a pneumatic signal line 66, the water valve 64 and water level switch 40 are in fluid communication with one another.
- the water valve 64 When supplied with a pneumatic pressure signal sent from the water level switch, the water valve 64 opens, permitting high pressure water supplied by the water tank 52 to pass through the valve and into a carbonator tank water supply line 68. In use, the water is transported through this water supply line 68 to a water inlet check valve 70 that is mounted to the carbonator tank 16 such that the carbonator tank can be filled with the high pressure water.
- the water chamber line 60 transports the water exiting the water tank 52 in a second direction to a water pressure regulator 72.
- This pressure regulator reduces the pressure of the water supplied from the water tank to approximately 40 psi. From the water pressure regulator 72, the water flows through a flat water supply line 74 and then through the cold plate 48 to be dispensed by the beverage dispenser 18 when activated by the operator.
- FIG. 2 illustrates, in cut-away view, the carbonator tank 16 used in the present embodiment.
- the carbonator tank 16 comprises a generally cylindrical tank 76.
- the gas inlet check valve 34 and the water inlet check valve 70 as well as a safety relief valve 78 of conventional design.
- a carbonated water outlet 80 Further mounted to the top of the carbonator tank 76 is a carbonated water outlet 80 that is fluidly connected to a carbonated water supply line 82 (FIG. 1).
- a carbonated water supply tube 84 that extends from the bottom of the tank up to the carbonated water outlet 80 such that, when the beverage dispenser valve 18 is activated, pressurized carbonated water from the bottom of the carbonator tank is forced through the supply tube 84, out of the carbonated water outlet 80, through the carbonated water supply line 82, through the cold plate 48, and finally out of the dispenser valve into a suitable beverage container C.
- the carbonator tank 16 can further comprise a mechanical water level indicator system 86.
- This system includes a hollow float member 88 having a rod 90 extending upwardly from the top portion of the float member.
- a magnetic member 92 Positioned on the top of the rod 90 is a magnetic member 92, by way of example, in the form of a magnetic cylinder.
- the float member 88 rests on the bottom of the carbonator tank.
- part of the magnetic member 92 is positioned within the tank 76 and part is positioned within an elongated hollow tube 94 that extends upwardly from the top of the tank.
- This hollow tube 94 permits travel of the rod 90 and magnetic member 92 in the upward direction, the purpose for which is explained hereinafter.
- Presently considered to be in accordance with the above description is the Model M-6 carbonator available from Jo-Bell.
- a mechanical stabilizer 96 can be provided.
- the stabilizer 96 can comprise a retainer band 98 that is wrapped around the float member 88 and a slide member 100 which is disposed about the carbonated water supply tube 84 and to which the retainer band is fixedly attached. Configured in this manner, the float member 88 will continue to rise within the carbonator tank 76 as the water level within the tank increases. Similarly, the magnetic member 92 will rise within the elongated hollow tube 94 so that water level sensing means can detect when the tank 76 is full so that water flow into the tank can be halted.
- the water level within the tank 76 is monitored and controlled by a carbonator tank water level switch 40 that is mounted to the carbonator tank 16.
- FIGS. 3 and 4 illustrate the water level switch 40 and part of the carbonator tank in cut-away view.
- the water level switch 40 comprises an outer housing 102 that is adapted to be mounted adjacent the hollow cylinder 94 of the carbonator tank 16.
- Located within the housing 102 is a pneumatic three-way magnetic proximity switch 104 and a lever arm 106. While the proximity switch 104 is fixed in position within the housing, the lever arm 106 is free to rotate about a pin 108 such that the lever arm is pivotally mounted within the water level switch 40.
- Mounted to the lever arm 106 are first and second magnets 110 and 112. The first magnet 110 is mounted to the arm 106 at a position in which it is adjacent the proximity switch 104 when the lever arm is oriented vertically as shown in FIG. 3.
- the first magnet 110 maintains the lever arm 106 in the vertical orientation when the tank 76 is not full.
- the lever arm 106 is in this vertical orientation, positive contact is made with the proximity switch 104, thereby activating the switch and causing it to send a pneumatic pressure signal to the water valve 64 to remain open so that the tank 76 can be filled.
- the magnetic member 92 within the hollow tube 94 rises, and eventually reaches a position at which it is adjacent the second magnet 112 mounted on the lever arm 106. Since the magnetic member 92 is constructed of a magnetic metal, such as magnetic stainless steel, the second magnet 112 of the lever arm 106 is attracted to the member 92.
- the lever arm 106 pivots toward the magnetic member as depicted in FIG. 4. Due to this pivoting, contact between the first magnet 110 and the proximity switch 104 is terminated, thereby deactivating the proximity switch. Being deactivated, the proximity switch 104 then shuts-off the supply of pressurized CO 2 gas to the water valve 64, causing the normally closed valve to cut-off the flow of water to the carbonator tank 16.
- the first embodiment 10 of the beverage dispensing system can be used to dispense carbonated and noncarbonated mixed beverages, as well as any carbonated and noncarbonated unmixed beverages, in liquid form.
- the water tank 52 is filled with water via the water tank refill check valve 62 and water chamber line 60.
- the three-way vent valve 59 is manually switched to the gas open position such that the gas chamber 58 of the tank and the high pressure gas supply line 50 are in open fluid communication with one another.
- the operator opens the shut-off valve 22 of the gas storage tank 20 so that high pressure CO 2 gas flows to the three gas pressure regulators 26, 28, and 30.
- CO 2 gas flows into the carbonator tank 16, raising the pressure within the tank to approximately 90 psi to 110 psi.
- the high pressure CO 2 gas also flows through the second and third pressure regulators 28 and 30.
- the gas is supplied to both to the pneumatic three-way magnetic proximity switch 104 of the water level switch 40 and to the concentrated syrup container 44.
- the gas supplied to the proximity switch 104 is used, as needed, to send pneumatic pressure signals to the water valve 64.
- the high pressure gas passes through the high pressure gas supply line 50, through the three-way vent valve 59, and into the gas chamber 58 of the water tank 52 to fill and pressurize the gas chamber.
- the water contained in the water chamber 56 is forced out of the tank 52 and flows through the water chamber line 60 to travel to both the carbonator tank water valve 64 and the water pressure regulator 72.
- the water that passes through the water pressure regulator is routed into and through the flat water supply line 74 to be cooled by the cold plate 48 and, if desired, dispensed through the beverage dispenser valve 18.
- the float member 88 contained therein is positioned near the bottom of the tank 76 and the water tank level switch 40 is in the activated position shown in FIG. 3.
- the water tank level switch 40 is in this activated position, pneumatic pressure is provided to the water valve 64, keeping it in the open position so that water can flow into the carbonator tank 16.
- the pressure of the water begins to rise sharply.
- the pressure of the water in the water chamber 56 and the lines in fluid communication therewith reach a pressure equal to that of the high pressure CO 2 gas contained in the gas chamber 58. Accordingly, water enters the tank at high pressure, typically at approximately 175 psi to 225 psi.
- the carbonator tank 16 Since the carbonator tank 16 is relatively small when compared to the CO 2 container 20 and water tank 52, it normally fills quickly. Therefore, carbonated water is available soon after the carbonization system is initiated. As such, the operator can use the beverage dispensing valve 18, commonly referred to as a "bar gun,” to dispense either flat water supplied by the flat water supply line 74 or carbonated water supplied by the carbonated water supply line 82. Similarly, syrup, or other concentrated liquid, can be dispensed from the bag-in-boxes 51 with the vacuum pumps 43 in the manner described hereinbefore such that a mixed flat or carbonated drink can be post-mixed in a selected beverage container C.
- the beverage dispensing valve 18, commonly referred to as a "bar gun” to dispense either flat water supplied by the flat water supply line 74 or carbonated water supplied by the carbonated water supply line 82.
- syrup, or other concentrated liquid can be dispensed from the bag-in-boxes 51 with the vacuum pumps 43 in the manner described here
- the water level switch 40 becomes oriented in the inactivated position (Fig. 4), thereby shutting-off the supply of gas to the water valve 64. Not having the pressure signal needed to remain open, the water valve 64 closes, cutting the supply of water to the carbonator tank 16. As the water level is again lowered, the water level switch is again activated, restarting the process described in the foregoing.
- the system therefore cycles in response to the volume of water contained within the carbonator tank 16. Typically, the cycle will occur repeatedly until either the gas or water supplies are depleted. At this time, either or both may be refilled, and the system reinitiated.
- FIG. 5 is a schematic view of a second embodiment 114 of a self-contained high pressure pneumatic beverage dispensing system. Since the second embodiment 114 is nearly identical in structure and function as that of the first except as to the water source and the pressure levels provided to the various components, the following discussion is focused on the water source 115 and the pressure levels associated therewith.
- the high pressure water tank of the first embodiment is replaced with a low pressure water tank 116 and a high pressure water pump system 118 that includes a pneumatic water pump 119.
- the low pressure water tank 116 is similar in construction to the high pressure water tank and therefore has water and gas chambers 120 and 122 separated by a pliable diaphragm 124. Due to the presence of the pneumatic water pump 119, the water within the water tank 116 need not be at high pressure. Accordingly, instead of being supplied with CO 2 gas at approximately 175 psi to 225 psi, the water tank is supplied with gas at pressures at approximately 25 psi to 60 psi.
- the water tank 116 is supplied with gas from a low pressure gas supply line 126 that branches from the syrup container line 42 described in the discussion of the first embodiment 10. Since it will not be subjected to high pressure CO 2 gas, the low pressure water tank 116 can be constructed of a mild steel as opposed to a stainless steel which tends to be substantially more expensive. Similar to the water tank of the first embodiment, pressurized water can leave the water chamber 120 of the tank 116 through a water chamber line 127. In one direction, the pressurized water supplied by the water tank 116 flows to the pneumatic water pump 119 to fill the pump with water. In a second direction, the water flows through flat water line 74 to the cold plate 48.
- the high pressure gas supply line 50 supplies gas at approximately 175 psi to 225 psi to a pneumatic water pump control valve 128.
- the control valve 128 is connected to a pump gas supply line 130, and first and second pneumatic signal lines 132 and 134.
- the pump gas supply line 130 connects in fluid communication to the pneumatic water pump 119 at its first end 136.
- the pneumatic signal lines 132 and 134 connect to first and second piston sensors 140 and 142 respectively.
- the first piston sensor 140 is mounted to the pump 119 adjacent its first end 136 and the second piston sensor 142 is mounted to the pump adjacent its second end 138.
- Each of the piston sensors 140 and 142 is connected to a sensor gas supply line 144 which is in fluid communication with the low pressure gas supply line 126.
- the pneumatic water pump 119 comprises a piston cylinder 145 and a rodless piston 146.
- the rodless piston 146 comprises a central magnet 148 that is positioned intermediate two piston end walls 150 and 152. Located between the magnet 148 and each of the end walls 150 and 152 are seals 154 and 156. Typically, these seals comprise an inner resilient O-ring 158 and an outer lip seal 160. Configured in this manner, the seals 154 and 156 prevent fluids from passing between the piston 146 and the piston cylinder 145, but permit sliding of the piston 146 along the cylinder 145.
- the first piston sensor 140 senses the proximity of the piston due to its magnetic attraction to the piston.
- the sensor 140 is activated and sends a pneumatic pressure signal to the control valve 128, causing the control valve to open.
- the control valve 128 While the control valve 128 is in the open position, high pressure gas flows through the control valve, along the pump gas supply line 130, and into the gas side of the pump 119. The high pressure gas ejects the water contained in the water side of the pump 119, eventually pressurizing the water to approximately 175 psi to 225 psi.
- the pressurized water flows to the carbonator tank 16 in similar manner as in the first embodiment 10.
- the second piston sensor 142 activates in similar manner to the first piston sensor 140, and sends a pneumatic pressure signal to the control valve 128 that causes the valve to cut-off the supply of gas to the pump and vent the piston cylinder 145 so that the relatively low pressure water can again fill the pump.
- the first piston sensor 140 is again activated, and the system cycles again.
- the system can further include a pump reset switch 162 and/or an accumulator tank 163.
- the reset switch 162 receives high pressure water from the pump through water supply line 164.
- the reset switch 162 also receives low pressure CO 2 gas from the syrup supply line 42 through gas supply line 166.
- Linking the reset switch 162 and the pump control valve 128 is a pneumatic signal line 168 which connects to the second signal line 134. So described, the pump reset switch 162 ensures that there is an adequate amount of carbonated water to meet the demand.
- the reset switch 162 sends a pneumatic pressure signal to the control valve 128, causing the valve to close and vent the gas pressure in the pump 119 so that the pump can be refilled and a full piston stroke then executed.
- the accumulator tank 163 contains an internal diaphragm (not shown) which separates the lower chamber of the tank 163 from the upper chamber of the tank 163.
- In the upper chamber is a volume of nitrogen gas.
- the lower chamber fills with high pressure water supplied by the pump 119.
- the nitrogen gas contained in the upper chamber is compressed. In this compressed state, the gas can force the water out of the accumulator tank 163 during situations in which carbonated water demand is high and the pump 119 is in the refill portion of its cycle.
- FIG. 7 illustrates an alternative carbonator tank and filling system for use in either of the aforementioned embodiments.
- the system comprises a conventional electrically sensed, high pressure carbonator tank 170 and an electric power source 172.
- the power source 172 typically comprises a battery.
- Electrically connected to the carbonator sensor (not shown) are both the power source 172 and a low voltage pneumatic interface valve 174.
- the interface valve 174 is in fluid communication with both a source of pressurized CO 2 gas and a pneumatic water valve 176.
- the sensors When the electric sensors within the carbonator tank 170 detect that the carbonator tank is not full, the sensors electrically signal the interface valve 174.
- the signal received by the interface valve 174 causes it to open and send a pneumatic pressure signal to the pneumatic water valve to cause it to open so that the carbonator tank can be refilled in the manner discussed hereinabove.
- FIG. 8 illustrates a further alternative carbonator tank and filling system for use with the present beverage disposing system which comprises a conventional high pressure carbonator tank 178.
- the carbonator tank 178 is mounted to a vertical surface with a spring loaded carbonator mounting bracket 180. Coupled to this mounting bracket 180 is a pneumatic three-way valve 182 that is in fluid communication with a high pressure CO 2 gas supply line 184 and a pneumatic signal line 186 which is in turn connected to a pneumatic water valve 188.
- the tank 178 When the tank 178 is empty, it is supported by the carbonator mounting bracket 180 in an upright orientation. While the tank 178 is positioned in this upright orientation, the pneumatic three-way valve 182 is open, thereby sending a pneumatic pressure signal to the water valve to remain open. Once the tank 178 is nearly full, however, its weight overcomes the force of the spring within the bracket 180, causing the tank to tilt. This tilting action closes the three-way valve, which in turn closes the water valve 188 and shuts-off the supply of pressurized water to the carbonator tank 178.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Devices For Dispensing Beverages (AREA)
Abstract
Description
- The present application claims the benefit of the filing date of U.S. Patent Application Serial No. 08/965,711, filed November 7, 1997, and U.S. Patent Application Serial No. 09/353,862, filed July 15, 1999, both of which are incorporated herein by reference in their entireties.
- The present disclosure relates generally to a beverage dispensing system configured for portable or fixed installations. More particularly, the present disclosure relates to a self-contained, high pressure pneumatic beverage dispensing system that is especially adapted for use on railcars, ships, and the like, as well as for installation in golf carts and other such small vehicles.
- Conventionally, beverage dispensing systems have required electrical or gasoline power. Therefore, these systems tend to be bulky and usually are unsuitable for portable applications.
- Typically, conventional beverage dispensing systems comprise a high pressure carbonator tank plumbed to a carbon dioxide (CO2) cylinder through a pressure regulator in which the pressure to be supplied to the carbonator tank is reduced to approximately 90 pounds per square inch (psi). A motorized pump plumbed to a fixed water tap system is used to pressurize the water supplied to the tank to approximately 200 psi. The high pressure water flows into the carbonator tank, overcoming the rising pressure of the CO2 gas contained therein. As the carbonator tank fills with this high pressure water, a pocket of CO2 gas that exists above the water is compressed, forcing the CO2 gas to be absorbed into the water, thereby creating carbonated water. In that these conventional beverage dispensing systems require a constant source of power to operate the pump motor, use of such systems is generally limited to fixed installations.
- Although portable beverage dispensing systems that do not require electrical or gasoline powered pumps have been developed, these systems have several disadvantages. One such system is that disclosed in U.S. Patent No. 5,411,179 (Oyler et al.) and U.S. Patent No. 5,553,749 (Oyler et al.). Similar to the systems described in the present disclosure, the system described in these patents use high pressure CO2 gas supplied by a CO2 tank to pressurize the water that is supplied to a carbonator tank. Unlike the present systems described in the present disclosure, however, the systems described in these patent references use a low pressure carbonator which typically operates at pressures below 100 psi.
- Despite providing for some degree of water carbonation (typically, approximately 2.5%), such low pressure systems do not produce beverages having a commercially acceptable level of carbonation (generally between 3% to 4%). Experimentation has shown that the pressurized water must be cooled to a low temperature prior to entering the carbonator tank of these systems to achieve absorption of CO2 gas into the water. This cooling typically is effected by using a cold plate through which the pressurized water passes just prior to being supplied to the carbonator tank.
- As mentioned above, low, albeit marginally acceptable, levels of carbonation can be attained with these low pressure systems. One significant drawback of using this method, however, is that the CO2 gas contained within the carbonated water can be quickly diffused from the water when it is heated to a warmer temperature. Accordingly, when the carbonated water is post-mixed with relatively warm liquids such as concentrated syrups, juices, and the like, the relatively small amount of carbonation contained within the water can be quickly lost.
- From the foregoing, it can be appreciated that it would be desirable to have a self-contained beverage dispensing system that is completely portable and that produces beverages having a commercially acceptable level of stable carbonation.
- The present disclosure relates to a self-contained high pressure pneumatic beverage dispensing system. In one embodiment, the system comprises a carbonator tank for facilitating absorption of CO2 gas in water to produce carbonated water, a source of CO2 gas under high pressure, the source of CO2 gas in fluid communication with the carbonator tank so as to fill the carbonator tank with CO2 gas, a source of water under high pressure and in fluid communication with the carbonator tank so as to fill the carbonator tank with water, at least one pneumatic pump in fluid communication with the source of CO2 gas, at least one liquid reservoir in fluid communication with the at least one pneumatic pump, and a beverage dispenser valve in fluid communication with the carbonator tank and the at least one liquid reservoir, wherein the beverage dispenser valve can dispense carbonated water and/or the liquid held in the at least one liquid reservoir when activated by the operator.
- In a presently preferred arrangement, the at least one liquid reservoir comprises a bag-in-box container and the pneumatic pump comprises a vacuum pump that can draw liquid from the container and urge it toward the dispenser valve when activated by the operator.
- The features and advantages of the invention will become apparent upon reading the following specification, when taken in conjunction with the accompanying drawings.
- FIG. 1 is a schematic view of a first embodiment of a self-contained high pressure pneumatic beverage dispensing system.
- FIG. 2 is a cut-away side view of the high pressure carbonator tank used in the beverage dispensing system of FIG. 1.
- FIG. 3 is a cut-away side view of the carbonator tank of FIG. 2 with a pneumatic water level switch mounted thereto (and with all inlet and outlet valves removed), this switch also shown in cut-away view to depict the activated or fill position of the pneumatic water level switch.
- FIG. 4 is a partial side view of the carbonator tank of FIG. 2 with the pneumatic water level switch of FIG. 3 in cut-away view to depict the inactivated or full position of the pneumatic water level switch.
- FIG. 5 is a schematic view of a second embodiment of a self-contained high pressure pneumatic beverage dispensing system.
- FIG. 6 is a partial cut-away view of the high pressure water pump used in the beverage dispensing system of FIG. 5 depicting the rodless piston contained within the cylindrical tube of the water pump.
- FIG. 7 is a schematic view of an alternative carbonator tank and filling system.
- FIG. 8 is schematic view of another alternative carbonator tank and filling system.
- Referring now in more detail to the drawings, in which like numerals indicate corresponding parts throughout the several views, FIGS. 1-8 illustrate various embodiments of a self-contained, high pressure pneumatic beverage dispensing system of the present invention. FIG. 1 is a schematic view of a first embodiment 10 of the self-contained high pressure pneumatic beverage dispensing system. The system generally comprises a
source 12 of gas, typically, although not necessarily, carbon dioxide (CO2) at high pressure, a source 14 of high pressure water, a highpressure carbonator tank 16, and abeverage dispensing valve 18. The source 14 of CO2 at high pressure typically comprises a conventional refillablegas storage tank 20 that is filled with pressurized CO2 gas. As will be discussed in more detail below, the pressurized CO2 gas contained within thegas storage tank 20 is used to both carbonate water in thecarbonator tank 16 as well as to pressurize and propel the water to be supplied to the carbonator tank. - The CO2 gas exits the
gas storage cylinder 20 through a gas shut-offvalve 22. When the gas shut-offvalve 22 is opened, CO2 gas travels through agas outlet line 24 and is supplied to three separategas pressure regulators first pressure regulator 26 is reduced in pressure to approximately 90 pounds per square inch (psi) to 110 psi and then exits the pressure regulator to enter a carbonatortank supply line 32. The carbonatortank supply line 32 directs the CO2 gas to a gasinlet check valve 34 of the highpressure carbonator tank 16 so that the carbonator tank can be filled with pressurized CO2 gas. - The CO2 gas that travels through the second
gas pressure regulator 28 is reduced in pressure to approximately 25 psi to 60 psi. After exiting the secondgas pressure regulator 28, the CO2 gas flows into a carbonator tank waterlevel switch line 36. The waterlevel switch line 36 is connected to a carbonator tankwater level switch 40, the configuration and operation of which is described in detail hereinafter. - Along the water
level switch line 36, between the secondgas pressure regulator 28 and thewater level switch 40, is a pump-line 42 that is in fluid communication with at least onepneumatic pump 43. By way of example, twosuch pumps 43 are shown in FIG. 1. Eachpump 43 can comprise a vacuum pump of conventional design which comprises an interior diaphragm (not shown) which is connected to an inner reversible value (not shown). Eachpump 43 is configured such that, when supplied with pressurized gas, the diaphragm reciprocates back and forth under the control of the reversible valve within the pump so as to draw liquid into the pump through aninlet 45 and expel the drawn liquid out from the pump through anoutlet 47. As indicated in FIG. 1, theinlets 45 are connected tosuction lines 49 that connect thepumps 43 toliquid reservoirs 51 which, for instance, comprise bag-in-box containers holding soft drink syrups and/or juice concentrates. Connected to theoutlets 47 aresupply lines 46 that connect thepumps 43 to a cold plate 48 in which the syrup or concentrate can be cooled to an appropriate serving temperature. Accordingly, when operating, eachpump 43 draws liquid from its associated bag-in-box container 51 and urges the liquid through thesupply line 46 to the cold plate 48. As is known in the art, when the pressure on both sides of the vacuum pump diaphragm equalizes, i.e. the pressure of the gas supplied byline 42 equals the pressure inline 46, the pump will stall. When the pressure becomes unequal, e.g., when the pressure inline 46 drops as syrup or concentrate is distributed by the operator, the pump will again reciprocate to draw and expel these liquids. Presently deemed suitable for use in the herein described embodiment are Model 5000 vacuum pumps available from Flowjet. From the cold plate 48, the syrup or concentrate then can be discharged through thebeverage dispenser valve 18 as desired. Although in the foregoing, the invention has been described as comprising a vacuum pump and a bag-in-box container, it is to be appreciated that equivalent substitutes for either or both of these components could be used in the present embodiment as desired. Accordingly, the identification of vacuum pumps and bag-in-box containers is not intended to limit the scope of the present disclosure. - The CO2 gas supplied to the third
gas pressure regulator 30 is lowered in pressure to approximately 175 psi to 225 psi. After passing through the thirdgas pressure regulator 30, the CO2 gas is ported through a high pressuregas supply line 50 that supplies gas pressure to the pressurized water source 14 of the system. In this first embodiment, the water source 14 comprises a highpressure water tank 52. Although capable of alternative configurations, thiswater tank 52 typically is constructed of a strong metal such as stainless steel. Inside thewater tank 52 is apliable diaphragm 54 that separates the interior of the water tank into twoseparate chambers 56 and 58. The upper, or water,chamber 56 of the water tank is adapted to store water that will be supplied to thecarbonator tank 16 for carbonization. The lower, or gas, chamber 58 is adapted to receive high pressure gas that is used to pressurize the water contained in theupper chamber 56. Thepliable diaphragm 54 completely isolates each chamber from the other such that no mixture of the water and CO2 gas can occur. - Connected to the water chamber side of the
water tank 52 is awater chamber line 60. Among other functions to be discussed hereinafter, thewater chamber line 60 can be used to refill thewater chamber 56 of thewater tank 52. To refill thetank 52, a refillinlet check valve 62 connected to one branch of thewater chamber pipeline 60 is connected to a source of water having positive head pressure which, depending upon personal preferences, can be a source of purified water or a standard tap water source. It will be understood that refilling should only be attempted when the water tank is in a depressurized state. - Positioned along the high pressure
gas supply line 50 between the thirdgas pressure regulator 30 and thewater tank 52 is a three-way vent valve 59. The three-way vent valve 59 is manually operable to control the pressurization or depressurization of the gas chamber 58 of the water tank. When switched to an open position, the three-way vent valve 59 directs high pressure CO2 gas into the gas chamber 58 of thewater tank 52. This high pressure gas urges thepliable diaphragm 54 against the volume of water contained within thewater chamber 56 to increase the pressure of the water to a level within the range of approximately 175 psi to 225 psi. When the operator wishes to refill the tank with water in the manner described above, the three-way vent valve 59 is manually switched to a closed position in which the supply of high pressure CO2 gas to the tank is shut-off, and the high pressure gas contained in the gas chamber of the water tank is vented to the atmosphere to relieve the pressure therein. Preferably, this gas is first directed to afirst vent line 65 which leads to adiffuser 67 which, as is known in the art, gradually diffuses the vented gas into the atmosphere to reduce noise. Once the pressure within thetank 52 is reduced, the operator can refill the tank with any water source capable of supplying water at a positive head pressure. - In addition to providing for refilling of the
water tank 52, thewater chamber line 60 is further used to transport the pressurized water supplied by the water tank in two separate directions. In a first direction, the water is taken to awater valve 64 that is positioned intermediate thewater tank 52 and thecarbonator tank 16 along the water flow path existing between these two tanks. Typically, thewater valve 64 is pneumatically actuated to open or close to permit or prevent the flow of water therethrough. In a preferred arrangement, thewater valve 64 comprises a normally closed, gas actuated, high pressure bellows valve. Considered suitable for this use are HB Series bellows valves manufactured and commercially available from by Nupro. Coupled with apneumatic signal line 66, thewater valve 64 andwater level switch 40 are in fluid communication with one another. When supplied with a pneumatic pressure signal sent from the water level switch, thewater valve 64 opens, permitting high pressure water supplied by thewater tank 52 to pass through the valve and into a carbonator tankwater supply line 68. In use, the water is transported through thiswater supply line 68 to a waterinlet check valve 70 that is mounted to thecarbonator tank 16 such that the carbonator tank can be filled with the high pressure water. - In addition to transporting high pressure water in the first direction to the
water valve 64, thewater chamber line 60 transports the water exiting thewater tank 52 in a second direction to awater pressure regulator 72. This pressure regulator reduces the pressure of the water supplied from the water tank to approximately 40 psi. From thewater pressure regulator 72, the water flows through a flatwater supply line 74 and then through the cold plate 48 to be dispensed by thebeverage dispenser 18 when activated by the operator. - The primary components of the first embodiment of the invention having been described, the configuration and operation of the high pressure carbonator tank will now be discussed. FIG. 2 illustrates, in cut-away view, the
carbonator tank 16 used in the present embodiment. As depicted in the figure, thecarbonator tank 16 comprises a generallycylindrical tank 76. Mounted to the top of thetank 76 are the gasinlet check valve 34 and the waterinlet check valve 70 as well as asafety relief valve 78 of conventional design. Further mounted to the top of thecarbonator tank 76 is acarbonated water outlet 80 that is fluidly connected to a carbonated water supply line 82 (FIG. 1). Inside the tank is a carbonatedwater supply tube 84 that extends from the bottom of the tank up to thecarbonated water outlet 80 such that, when thebeverage dispenser valve 18 is activated, pressurized carbonated water from the bottom of the carbonator tank is forced through thesupply tube 84, out of thecarbonated water outlet 80, through the carbonatedwater supply line 82, through the cold plate 48, and finally out of the dispenser valve into a suitable beverage container C. - In addition to the above components, the
carbonator tank 16 can further comprise a mechanical waterlevel indicator system 86. This system includes ahollow float member 88 having arod 90 extending upwardly from the top portion of the float member. Positioned on the top of therod 90 is amagnetic member 92, by way of example, in the form of a magnetic cylinder. When thetank 76 is empty, thefloat member 88 rests on the bottom of the carbonator tank. Situated in this empty configuration, part of themagnetic member 92 is positioned within thetank 76 and part is positioned within an elongatedhollow tube 94 that extends upwardly from the top of the tank. Thishollow tube 94 permits travel of therod 90 andmagnetic member 92 in the upward direction, the purpose for which is explained hereinafter. Presently considered to be in accordance with the above description is the Model M-6 carbonator available from Jo-Bell. - As the
tank 76 is filled with water, the buoyancy of thefloat member 88 causes it to float towards the top of the tank. To maintain thefloat member 88,rod 90, andmagnetic member 92 in the correct orientation, amechanical stabilizer 96 can be provided. As illustrated in the figure, thestabilizer 96 can comprise aretainer band 98 that is wrapped around thefloat member 88 and aslide member 100 which is disposed about the carbonatedwater supply tube 84 and to which the retainer band is fixedly attached. Configured in this manner, thefloat member 88 will continue to rise within thecarbonator tank 76 as the water level within the tank increases. Similarly, themagnetic member 92 will rise within the elongatedhollow tube 94 so that water level sensing means can detect when thetank 76 is full so that water flow into the tank can be halted. - In the first embodiment, the water level within the
tank 76 is monitored and controlled by a carbonator tankwater level switch 40 that is mounted to thecarbonator tank 16. FIGS. 3 and 4 illustrate thewater level switch 40 and part of the carbonator tank in cut-away view. Preferably, thewater level switch 40 comprises anouter housing 102 that is adapted to be mounted adjacent thehollow cylinder 94 of thecarbonator tank 16. Located within thehousing 102 is a pneumatic three-waymagnetic proximity switch 104 and alever arm 106. While theproximity switch 104 is fixed in position within the housing, thelever arm 106 is free to rotate about apin 108 such that the lever arm is pivotally mounted within thewater level switch 40. Mounted to thelever arm 106 are first andsecond magnets first magnet 110 is mounted to thearm 106 at a position in which it is adjacent theproximity switch 104 when the lever arm is oriented vertically as shown in FIG. 3. - Being attracted to the
proximity switch 104, thefirst magnet 110 maintains thelever arm 106 in the vertical orientation when thetank 76 is not full. When thelever arm 106 is in this vertical orientation, positive contact is made with theproximity switch 104, thereby activating the switch and causing it to send a pneumatic pressure signal to thewater valve 64 to remain open so that thetank 76 can be filled. As the water level rises within thetank 76, however, themagnetic member 92 within thehollow tube 94 rises, and eventually reaches a position at which it is adjacent thesecond magnet 112 mounted on thelever arm 106. Since themagnetic member 92 is constructed of a magnetic metal, such as magnetic stainless steel, thesecond magnet 112 of thelever arm 106 is attracted to themember 92. In that the attractive forces between thesecond magnet 112 and themagnetic member 92 are greater than those between thefirst magnet 110 and the proximity switch, thelever arm 106 pivots toward the magnetic member as depicted in FIG. 4. Due to this pivoting, contact between thefirst magnet 110 and theproximity switch 104 is terminated, thereby deactivating the proximity switch. Being deactivated, theproximity switch 104 then shuts-off the supply of pressurized CO2 gas to thewater valve 64, causing the normally closed valve to cut-off the flow of water to thecarbonator tank 16. - In operation, the first embodiment 10 of the beverage dispensing system can be used to dispense carbonated and noncarbonated mixed beverages, as well as any carbonated and noncarbonated unmixed beverages, in liquid form. To use the system, the
water tank 52 is filled with water via the water tankrefill check valve 62 andwater chamber line 60. Once thewater tank 52 has been filled to an appropriate level, the three-way vent valve 59 is manually switched to the gas open position such that the gas chamber 58 of the tank and the high pressuregas supply line 50 are in open fluid communication with one another. - To initiate the carbonization process, the operator opens the shut-off
valve 22 of thegas storage tank 20 so that high pressure CO2 gas flows to the threegas pressure regulators first pressure regulator 26, CO2 gas flows into thecarbonator tank 16, raising the pressure within the tank to approximately 90 psi to 110 psi. At approximately the same time, the high pressure CO2 gas also flows through the second andthird pressure regulators second pressure regulator 28, the gas is supplied to both to the pneumatic three-waymagnetic proximity switch 104 of thewater level switch 40 and to theconcentrated syrup container 44. The gas supplied to theproximity switch 104 is used, as needed, to send pneumatic pressure signals to thewater valve 64. After passing through thethird pressure regulator 30, the high pressure gas passes through the high pressuregas supply line 50, through the three-way vent valve 59, and into the gas chamber 58 of thewater tank 52 to fill and pressurize the gas chamber. - As the CO2 gas flows into the gas chamber 58, the water contained in the
water chamber 56 is forced out of thetank 52 and flows through thewater chamber line 60 to travel to both the carbonatortank water valve 64 and thewater pressure regulator 72. The water that passes through the water pressure regulator is routed into and through the flatwater supply line 74 to be cooled by the cold plate 48 and, if desired, dispensed through thebeverage dispenser valve 18. - Assuming the
carbonator tank 16 to initially not contain water, thefloat member 88 contained therein is positioned near the bottom of thetank 76 and the watertank level switch 40 is in the activated position shown in FIG. 3. When the watertank level switch 40 is in this activated position, pneumatic pressure is provided to thewater valve 64, keeping it in the open position so that water can flow into thecarbonator tank 16. As the water continues to flow from thewater tank 52 and fills all lines connected thereto, the pressure of the water begins to rise sharply. Eventually, the pressure of the water in thewater chamber 56 and the lines in fluid communication therewith reach a pressure equal to that of the high pressure CO2 gas contained in the gas chamber 58. Accordingly, water enters the tank at high pressure, typically at approximately 175 psi to 225 psi. - Since the
carbonator tank 16 is relatively small when compared to the CO2 container 20 andwater tank 52, it normally fills quickly. Therefore, carbonated water is available soon after the carbonization system is initiated. As such, the operator can use thebeverage dispensing valve 18, commonly referred to as a "bar gun," to dispense either flat water supplied by the flatwater supply line 74 or carbonated water supplied by the carbonatedwater supply line 82. Similarly, syrup, or other concentrated liquid, can be dispensed from the bag-in-boxes 51 with thevacuum pumps 43 in the manner described hereinbefore such that a mixed flat or carbonated drink can be post-mixed in a selected beverage container C. - Once the
carbonator tank 16 is full, thewater level switch 40 becomes oriented in the inactivated position (Fig. 4), thereby shutting-off the supply of gas to thewater valve 64. Not having the pressure signal needed to remain open, thewater valve 64 closes, cutting the supply of water to thecarbonator tank 16. As the water level is again lowered, the water level switch is again activated, restarting the process described in the foregoing. The system therefore cycles in response to the volume of water contained within thecarbonator tank 16. Typically, the cycle will occur repeatedly until either the gas or water supplies are depleted. At this time, either or both may be refilled, and the system reinitiated. - FIG. 5 is a schematic view of a second embodiment 114 of a self-contained high pressure pneumatic beverage dispensing system. Since the second embodiment 114 is nearly identical in structure and function as that of the first except as to the water source and the pressure levels provided to the various components, the following discussion is focused on the
water source 115 and the pressure levels associated therewith. - In this second embodiment 114, the high pressure water tank of the first embodiment is replaced with a low pressure water tank 116 and a high pressure water pump system 118 that includes a
pneumatic water pump 119. The low pressure water tank 116 is similar in construction to the high pressure water tank and therefore has water andgas chambers 120 and 122 separated by apliable diaphragm 124. Due to the presence of thepneumatic water pump 119, the water within the water tank 116 need not be at high pressure. Accordingly, instead of being supplied with CO2 gas at approximately 175 psi to 225 psi, the water tank is supplied with gas at pressures at approximately 25 psi to 60 psi. Therefore, the water tank 116 is supplied with gas from a low pressuregas supply line 126 that branches from thesyrup container line 42 described in the discussion of the first embodiment 10. Since it will not be subjected to high pressure CO2 gas, the low pressure water tank 116 can be constructed of a mild steel as opposed to a stainless steel which tends to be substantially more expensive. Similar to the water tank of the first embodiment, pressurized water can leave thewater chamber 120 of the tank 116 through a water chamber line 127. In one direction, the pressurized water supplied by the water tank 116 flows to thepneumatic water pump 119 to fill the pump with water. In a second direction, the water flows throughflat water line 74 to the cold plate 48. - In the second embodiment, the high pressure
gas supply line 50 supplies gas at approximately 175 psi to 225 psi to a pneumatic waterpump control valve 128. As shown in FIG. 5, in addition to the high pressuregas supply line 50, thecontrol valve 128 is connected to a pumpgas supply line 130, and first and secondpneumatic signal lines gas supply line 130 connects in fluid communication to thepneumatic water pump 119 at itsfirst end 136. Thepneumatic signal lines second piston sensors first piston sensor 140 is mounted to thepump 119 adjacent itsfirst end 136 and thesecond piston sensor 142 is mounted to the pump adjacent itssecond end 138. Each of thepiston sensors gas supply line 144 which is in fluid communication with the low pressuregas supply line 126. - As shown in FIG. 6, the
pneumatic water pump 119 comprises apiston cylinder 145 and arodless piston 146. Therodless piston 146 comprises acentral magnet 148 that is positioned intermediate twopiston end walls magnet 148 and each of theend walls ring 158 and anouter lip seal 160. Configured in this manner, the seals 154 and 156 prevent fluids from passing between thepiston 146 and thepiston cylinder 145, but permit sliding of thepiston 146 along thecylinder 145. - In an initial filled state, with the
piston 146 positioned adjacent thefirst end 136 of thepump 119, thefirst piston sensor 140 senses the proximity of the piston due to its magnetic attraction to the piston. When such a condition is sensed, thesensor 140 is activated and sends a pneumatic pressure signal to thecontrol valve 128, causing the control valve to open. While thecontrol valve 128 is in the open position, high pressure gas flows through the control valve, along the pumpgas supply line 130, and into the gas side of thepump 119. The high pressure gas ejects the water contained in the water side of thepump 119, eventually pressurizing the water to approximately 175 psi to 225 psi. - From the
pump 119, the pressurized water flows to thecarbonator tank 16 in similar manner as in the first embodiment 10. When nearly all of the water is driven out of thepump 119 with thepiston 146, thesecond piston sensor 142 activates in similar manner to thefirst piston sensor 140, and sends a pneumatic pressure signal to thecontrol valve 128 that causes the valve to cut-off the supply of gas to the pump and vent thepiston cylinder 145 so that the relatively low pressure water can again fill the pump. Once thepump 119 is completely filled, thefirst piston sensor 140 is again activated, and the system cycles again. - Although the system, as described herein, is believed to be complete and effective, the system can further include a pump
reset switch 162 and/or an accumulator tank 163. As shown in FIG. 5, thereset switch 162 receives high pressure water from the pump throughwater supply line 164. Thereset switch 162 also receives low pressure CO2 gas from thesyrup supply line 42 throughgas supply line 166. Linking thereset switch 162 and thepump control valve 128 is apneumatic signal line 168 which connects to thesecond signal line 134. So described, the pumpreset switch 162 ensures that there is an adequate amount of carbonated water to meet the demand. For instance, if thepiston 146 is positioned at some intermediate point along the length of its stroke and thecarbonator tank 16 is filled, switching thewater valve 64 off, equilibrium can be achieved, dropping the pressure of the water, therefore indicating that thewater pump 119 is not full. Upon sensing this water pressure drop, thereset switch 162 sends a pneumatic pressure signal to thecontrol valve 128, causing the valve to close and vent the gas pressure in thepump 119 so that the pump can be refilled and a full piston stroke then executed. - Another optional component that ensures adequate supply of high pressure water is the accumulator tank 163. The accumulator tank 163 contains an internal diaphragm (not shown) which separates the lower chamber of the tank 163 from the upper chamber of the tank 163. In the upper chamber is a volume of nitrogen gas. In operation, the lower chamber fills with high pressure water supplied by the
pump 119. As the accumulator tank 163 is filled, the nitrogen gas contained in the upper chamber is compressed. In this compressed state, the gas can force the water out of the accumulator tank 163 during situations in which carbonated water demand is high and thepump 119 is in the refill portion of its cycle. - FIG. 7 illustrates an alternative carbonator tank and filling system for use in either of the aforementioned embodiments. The system comprises a conventional electrically sensed, high
pressure carbonator tank 170 and anelectric power source 172. Considered suitable for this application is any of the electrically sensed carbonator tanks produced by McCann. To ensure portability, thepower source 172 typically comprises a battery. Electrically connected to the carbonator sensor (not shown) are both thepower source 172 and a low voltagepneumatic interface valve 174. Theinterface valve 174 is in fluid communication with both a source of pressurized CO2 gas and apneumatic water valve 176. - When the electric sensors within the
carbonator tank 170 detect that the carbonator tank is not full, the sensors electrically signal theinterface valve 174. The signal received by theinterface valve 174, causes it to open and send a pneumatic pressure signal to the pneumatic water valve to cause it to open so that the carbonator tank can be refilled in the manner discussed hereinabove. - FIG. 8 illustrates a further alternative carbonator tank and filling system for use with the present beverage disposing system which comprises a conventional high
pressure carbonator tank 178. Thecarbonator tank 178 is mounted to a vertical surface with a spring loadedcarbonator mounting bracket 180. Coupled to this mountingbracket 180 is a pneumatic three-way valve 182 that is in fluid communication with a high pressure CO2gas supply line 184 and apneumatic signal line 186 which is in turn connected to apneumatic water valve 188. - When the
tank 178 is empty, it is supported by thecarbonator mounting bracket 180 in an upright orientation. While thetank 178 is positioned in this upright orientation, the pneumatic three-way valve 182 is open, thereby sending a pneumatic pressure signal to the water valve to remain open. Once thetank 178 is nearly full, however, its weight overcomes the force of the spring within thebracket 180, causing the tank to tilt. This tilting action closes the three-way valve, which in turn closes thewater valve 188 and shuts-off the supply of pressurized water to thecarbonator tank 178. - While preferred embodiments of the invention have been disclosed in detail in the foregoing description and drawings, it will be understood by those skilled in the art that variations and modifications thereof can be made without departing from the spirit and scope of the invention as set forth in the claims and such variations and modifications are intended to be part of this disclosure. For instance, although the second embodiment of the invention is described as comprising a separate water tank and water pump, it will be understood by persons having ordinary skill in the art that these two components could essentially be combined into a single component such as a high volume, high pressure water pump. In such an arrangement, the pump would function similarly as the pump described in the second embodiment, however, would only complete one stroke instead of cycling between dispensing and refilling strokes. Because of this fact, the pump control valve, piston sensors, and associated lines would be unnecessary in such an embodiment.
Claims (13)
- A self-contained high pressure pneumatic beverage dispensing system, comprising:a carbonator tank for facilitating absorption of CO2 gas in water to produce carbonated water;a source of CO2 gas under high pressure, said source of CO2 gas being in fluid communication with said carbonator tank so as to fill said carbonator tank with CO2 gas;a source of water under high pressure, said source of water being in fluid communication with said carbonator tank so as to fill said carbonator tank with water;at least one pneumatic pump in fluid communication with said source of CO2 gas;at least one liquid reservoir in fluid communication with said at least one pneumatic pump; anda beverage dispenser valve in fluid communication with said carbonator tank and said at least one liquid reservoir, wherein said beverage dispenser valve can dispense carbonated water and/or the liquid held in said at least one liquid reservoir when activated by the operator.
- The system of claim 1, wherein said at least one pump comprises a vacuum pump.
- The system of claim 1, wherein said at least one liquid reservoir comprises a bag-in-box container adapted to hold soft drink syrups and juice concentrates.
- The system of claim 1, further comprising a cold plate through which the carbonated water flows after exiting said carbonator tank and before passing through said beverage dispenser valve.
- The system of claim 1, further comprising a water valve in fluid communication with said source of water and said carbonator tank, said water valve having an open position in which water from said source of water can flow through said water valve and into said carbonator tank and having a closed position in which water from said source of water cannot flow through said water valve to said carbonator tank.
- The system of claim 5, further comprising a water level switch operably connected to said carbonator tank and capable of sensing whether or not said carbonator tank is filled with water, said water level switch further being capable of sending a signal to said water valve that causes said water valve to open when a low water level inside said carbonator tank is sensed.
- The system of claim 6, wherein said water valve is pneumatically actuated and said water level switch is in fluid communication with said source of CO2 and capable of sending a pneumatic signal to open said water valve and supply water to said carbonator tank when a low water level inside said carbonator tank is sensed by said water level switch.
- The system of claim 1, wherein said source of water comprises a high pressure water tank.
- The system of claim 1, wherein said source of water includes a water tank and a water pump in fluid communication with said water tank, said water pump being adapted to receive high pressure CO2 gas from said source of CO2 gas and use it to increase the pressure of the water supplied to said water pump.
- The system of claim 9, wherein said source of water further includes a pneumatic water pump control system that comprises first and second piston sensors, wherein said piston sensors send signals to said control valve to indicate when to reciprocate said pump.
- A method for providing a portable source of carbonated beverages, comprising:pressurizing water through utilization of a high pressure gas;transporting the pressurized water to a carbonator tank;absorbing CO2 gas into the pressurized water within the carbonator tank to form carbonated water;controlling the amount of water transported to the carbonator tank with a water valve in fluid communication with the carbonator tank; andcontrolling actuation of the water valve with a water level switch operably connected to the carbonator tank and capable of sensing whether or not the carbonator tank is filled with water.
- The method of claim 11, wherein the water valve that controls transport of water of the carbonator tank is pneumatically controlled.
- The method of claim 11, wherein the water level switch operably connected to the carbonator tank sends pneumatic signals to the water valve to control its actuation.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99120677A EP1094027A1 (en) | 1999-10-19 | 1999-10-19 | High pressure pneumatic beverage dispensing system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99120677A EP1094027A1 (en) | 1999-10-19 | 1999-10-19 | High pressure pneumatic beverage dispensing system |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1094027A1 true EP1094027A1 (en) | 2001-04-25 |
Family
ID=8239224
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99120677A Withdrawn EP1094027A1 (en) | 1999-10-19 | 1999-10-19 | High pressure pneumatic beverage dispensing system |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP1094027A1 (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1095898A1 (en) * | 1999-10-29 | 2001-05-02 | S.O.B. Partnership | Self-contained high pressure pneumatic beverage dispensing system |
US7984845B2 (en) | 2008-05-19 | 2011-07-26 | Millercoors, Llc | Regulated fluid dispensing system packaging |
US8038039B2 (en) | 2008-05-19 | 2011-10-18 | Millercoors, Llc | Regulated fluid dispensing device and method of dispensing a carbonated beverage |
US8052012B2 (en) | 2008-05-19 | 2011-11-08 | Millercoors, Llc | Regulated fluid dispensing device and method of dispensing a carbonated beverage |
US8191740B2 (en) | 2008-05-19 | 2012-06-05 | Millercoors, Llc | Modular constructed regulated fluid dispensing device |
ITMI20131638A1 (en) * | 2013-10-03 | 2015-04-04 | Vintar S N C Di Tarallo B E Taran Tini M | DISPENSING SYSTEM FOR A SPARKLING BEVERAGE, IN PARTICULAR WINE |
WO2016179483A3 (en) * | 2015-05-06 | 2016-12-15 | La Colombe Torrefaction, Inc. | Foaming pressurized beverage |
US10051874B2 (en) | 2015-05-06 | 2018-08-21 | La Colombe Torrefaction, Inc. | Foaming pressurized beverage |
US11020695B2 (en) | 2015-05-27 | 2021-06-01 | Flow Control LLC | Cartridge pump |
US11339768B2 (en) | 2015-05-27 | 2022-05-24 | Flow Control LLC | Cartridge accumulator |
US11472690B2 (en) | 2021-02-05 | 2022-10-18 | Cana Technology, Inc. | Pneumatic system for fluid mixture dispensing device |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2391003A (en) * | 1942-01-15 | 1945-12-18 | Frostidrink Inc | Carbonating apparatus |
EP0033157A2 (en) * | 1980-01-29 | 1981-08-05 | The Coca-Cola Company | Method and apparatus for making and dispensing carbonated water |
WO1994012425A1 (en) * | 1992-11-20 | 1994-06-09 | Ab Konstruktions-Bakelit | Method and apparatus for carbonating and chilling a liquid |
US5411179A (en) | 1993-08-31 | 1995-05-02 | S.O.B. Partnership | Self-contained beverage dispensing system |
US5575405A (en) * | 1989-09-01 | 1996-11-19 | Juicy Whip, Inc. | Post-mix beverage dispenser with an associated simulated visual display of beverage |
-
1999
- 1999-10-19 EP EP99120677A patent/EP1094027A1/en not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2391003A (en) * | 1942-01-15 | 1945-12-18 | Frostidrink Inc | Carbonating apparatus |
EP0033157A2 (en) * | 1980-01-29 | 1981-08-05 | The Coca-Cola Company | Method and apparatus for making and dispensing carbonated water |
US5575405A (en) * | 1989-09-01 | 1996-11-19 | Juicy Whip, Inc. | Post-mix beverage dispenser with an associated simulated visual display of beverage |
WO1994012425A1 (en) * | 1992-11-20 | 1994-06-09 | Ab Konstruktions-Bakelit | Method and apparatus for carbonating and chilling a liquid |
US5411179A (en) | 1993-08-31 | 1995-05-02 | S.O.B. Partnership | Self-contained beverage dispensing system |
US5553749A (en) | 1993-08-31 | 1996-09-10 | S.O.B. Partnership | Self-contained beverage dispensing system |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1095898A1 (en) * | 1999-10-29 | 2001-05-02 | S.O.B. Partnership | Self-contained high pressure pneumatic beverage dispensing system |
US7984845B2 (en) | 2008-05-19 | 2011-07-26 | Millercoors, Llc | Regulated fluid dispensing system packaging |
US8038039B2 (en) | 2008-05-19 | 2011-10-18 | Millercoors, Llc | Regulated fluid dispensing device and method of dispensing a carbonated beverage |
US8052012B2 (en) | 2008-05-19 | 2011-11-08 | Millercoors, Llc | Regulated fluid dispensing device and method of dispensing a carbonated beverage |
US8141755B2 (en) | 2008-05-19 | 2012-03-27 | Millercoors, Llc | Regulated fluid dispensing device and method of dispensing a carbonated beverage |
US8186569B2 (en) | 2008-05-19 | 2012-05-29 | Millercoors, Llc | Regulated fluid dispensing system packaging |
US8191740B2 (en) | 2008-05-19 | 2012-06-05 | Millercoors, Llc | Modular constructed regulated fluid dispensing device |
ITMI20131638A1 (en) * | 2013-10-03 | 2015-04-04 | Vintar S N C Di Tarallo B E Taran Tini M | DISPENSING SYSTEM FOR A SPARKLING BEVERAGE, IN PARTICULAR WINE |
WO2016179483A3 (en) * | 2015-05-06 | 2016-12-15 | La Colombe Torrefaction, Inc. | Foaming pressurized beverage |
US10051874B2 (en) | 2015-05-06 | 2018-08-21 | La Colombe Torrefaction, Inc. | Foaming pressurized beverage |
US10729151B2 (en) | 2015-05-06 | 2020-08-04 | La Colombe Torrefaction, Inc. | Foaming pressurized beverage |
US10893683B2 (en) | 2015-05-06 | 2021-01-19 | La Colombe Torrefaction, Inc. | Foaming pressurized beverage |
US11020695B2 (en) | 2015-05-27 | 2021-06-01 | Flow Control LLC | Cartridge pump |
US11339768B2 (en) | 2015-05-27 | 2022-05-24 | Flow Control LLC | Cartridge accumulator |
US11472690B2 (en) | 2021-02-05 | 2022-10-18 | Cana Technology, Inc. | Pneumatic system for fluid mixture dispensing device |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6234349B1 (en) | Self-contained high pressure pneumatic beverage dispensing system | |
US6820763B2 (en) | Portable beverage dispensing systems | |
US6253960B1 (en) | Self-contained high pressure pneumatic beverage dispensing system | |
US6216913B1 (en) | Self-contained pneumatic beverage dispensing system | |
US6021922A (en) | Self-contained high pressure pneumatic beverage dispensing system | |
US20060231574A1 (en) | Self-contained pneumatic beverage dispensing system | |
US4950431A (en) | Motorless batch carbonator | |
US4304736A (en) | Method of and apparatus for making and dispensing a carbonated beverage utilizing propellant carbon dioxide gas for carbonating | |
US4921135A (en) | Pressurized beverage container dispensing system | |
US4687120A (en) | Method and apparatus for dispensing cold beverage | |
CA1145303A (en) | Post-mix beverage dispensing system syrup package, valving system and carbonator therefor | |
EP1094027A1 (en) | High pressure pneumatic beverage dispensing system | |
US6196418B1 (en) | Carbonated and non-carbonated water source and water pressure booster | |
US6793099B1 (en) | Supply system for a bottled water cooler and method of use | |
US6296153B1 (en) | Self-contained high pressure pneumatic beverage dispensing system | |
US20110017770A1 (en) | Method and apparatus for pressure equalized dispensing of a pressurized liquid in a container ("flair beverage valves") | |
US4709734A (en) | Method and system for filling packages with a carbonated beverage pre-mix under micro-gravity conditions | |
US4093681A (en) | Motorless carbonator | |
US9873606B2 (en) | Self-pressurized concentrate source for post-mix equipment | |
WO2017221183A1 (en) | Method and apparatus for dispensing one or more liquids from a liquid storage container | |
EP1211217A1 (en) | Bottle coupler | |
EP1092673A1 (en) | High-pressure pneumatic beverage dispensing system | |
WO2021074639A1 (en) | Beverage dispenser with removable water container and carbonator assembly | |
WO1990008481A1 (en) | Motorless carbonator | |
US20210023512A1 (en) | Gas entrainment system for beverages |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
|
17P | Request for examination filed |
Effective date: 20010629 |
|
AKX | Designation fees paid |
Free format text: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
17Q | First examination report despatched |
Effective date: 20030410 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20030823 |