EP2295369A1 - Refroidisseur banc de glace - Google Patents

Refroidisseur banc de glace Download PDF

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Publication number
EP2295369A1
EP2295369A1 EP10194049A EP10194049A EP2295369A1 EP 2295369 A1 EP2295369 A1 EP 2295369A1 EP 10194049 A EP10194049 A EP 10194049A EP 10194049 A EP10194049 A EP 10194049A EP 2295369 A1 EP2295369 A1 EP 2295369A1
Authority
EP
European Patent Office
Prior art keywords
coolant
temperature
dispense
cooler
concentrate
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.)
Granted
Application number
EP10194049A
Other languages
German (de)
English (en)
Other versions
EP2295369B1 (fr
Inventor
Klaus Wiemer
Heinz Altenbach
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Marmon Foodservice Technologies UK Ltd
Original Assignee
IMI Cornelius UK Ltd
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Filing date
Publication date
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Publication of EP2295369A1 publication Critical patent/EP2295369A1/fr
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Publication of EP2295369B1 publication Critical patent/EP2295369B1/fr
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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
    • B67D1/0015—Apparatus or devices for dispensing beverages on draught the beverage being prepared by mixing at least two liquid components
    • B67D1/0021—Apparatus or devices for dispensing beverages on draught the beverage being prepared by mixing at least two liquid components the components being mixed at the time of dispensing, i.e. post-mix dispensers
    • 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
    • B67D1/0857—Cooling arrangements
    • 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
    • B67D1/0857—Cooling arrangements
    • B67D1/0858—Cooling arrangements using compression systems
    • B67D1/0861—Cooling arrangements using compression systems the evaporator acting through an intermediate heat transfer means
    • B67D1/0864—Cooling arrangements using compression systems the evaporator acting through an intermediate heat transfer means in the form of a cooling bath
    • 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
    • B67D1/0857—Cooling arrangements
    • B67D1/0858—Cooling arrangements using compression systems
    • B67D1/0861—Cooling arrangements using compression systems the evaporator acting through an intermediate heat transfer means
    • B67D1/0865—Cooling arrangements using compression systems the evaporator acting through an intermediate heat transfer means by circulating a cooling fluid along beverage supply lines, e.g. pythons
    • 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
    • B67D1/0857—Cooling arrangements
    • B67D1/0858—Cooling arrangements using compression systems
    • B67D1/0861—Cooling arrangements using compression systems the evaporator acting through an intermediate heat transfer means
    • B67D1/0865—Cooling arrangements using compression systems the evaporator acting through an intermediate heat transfer means by circulating a cooling fluid along beverage supply lines, e.g. pythons
    • B67D1/0867—Cooling arrangements using compression systems the evaporator acting through an intermediate heat transfer means by circulating a cooling fluid along beverage supply lines, e.g. pythons the cooling fluid being a liquid
    • 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
    • B67D1/0878—Safety, warning or controlling devices
    • B67D1/0882—Devices for controlling the dispensing conditions
    • B67D1/0884—Means for controlling the parameters of the state of the liquid to be dispensed, e.g. temperature, pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/02—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating liquids, e.g. brine
    • 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
    • B67D2210/00—Indexing scheme relating to aspects and details of apparatus or devices for dispensing beverages on draught or for controlling flow of liquids under gravity from storage containers for dispensing purposes
    • B67D2210/00028—Constructional details
    • B67D2210/0012—Constructional details related to concentrate handling
    • B67D2210/00125—Treating or conditioning the concentrate, e.g. by heating, freezing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D31/00—Other cooling or freezing apparatus
    • F25D31/002—Liquid coolers, e.g. beverage cooler
    • F25D31/003—Liquid coolers, e.g. beverage cooler with immersed cooling element

Definitions

  • This invention relates to beverage dispense and has particular, but not exclusive, application to the field of soft drinks which are typically dispensed chilled. More especially, the invention concerns the dispense of post-mix beverages such as colas and flavoured sodas in which a concentrate such as a syrup or flavour is mixed with a diluent, typically still or carbonated water, at the point of dispense.
  • a concentrate such as a syrup or flavour
  • a diluent typically still or carbonated water
  • the concentrate and diluent are typically mixed in the correct proportions in a post-mix dispense valve for dispense of the beverage at a dispense outlet of a counter top fitting such as a dispense tower.
  • the tower may have multiple outlets for the dispense of the same or different beverages.
  • the beverage ingredients are delivered to the tower in separate supply lines from remote sources of the ingredients.
  • the diluent supply lines pass through a cooler for dispense of chilled beverages.
  • the cooler is often positioned well away from the serving area and the diluent lines are contained in an insulated sheath known as a python to prevent the diluent warming up between the cooler and the tower.
  • the concentrate lines are also contained in the python and may be passed through the cooler.
  • Chilled post-mix soft drinks such as colas and flavoured sodas are typically dispensed by mixing a diluent with a concentrate in a ratio of approximately 5:1.
  • Dispense of a drink having a temperature of about 4 to 5°C can be achieved if the diluent temperature is about 2°C and the concentrate temperature is about 14°C.
  • Accurate control of the diluent temperature in particular is desirable to maintain the required temperature and this can be a problem during periods of high cooling demand when several drinks are dispensed one after another.
  • the present invention seeks to provide a system for dispensing beverages, particularly soft drinks and more especially post-mix soft drinks.
  • a beverage dispense system as defined in claim 1.
  • the cooling module is located within the dispense unit.
  • a pump is provided for pumping coolant around the re-circulation line and a motor for the pump is operable to control pump speed in response to the coolant temperature in the coolant re-circulation line.
  • the chamber includes an inlet and an outlet connected to the coolant re-circulation line and a flow guide for directing flow of water through the chamber between the inlet and the outlet to optimise heat exchange with concentrate in the concentrate line.
  • the coolant is a diluent such as water and the dispense unit includes a post-mix dispense valve connected to the concentrate line and to the coolant re-circulation line.
  • the coolant re-circulation line is connected to a source of still water and includes a carbonator for carbonating the water supplied to the post-mix valve.
  • the cooler comprises a bath of coolant, the carbonator being located within the bath and the water re-circulation line includes a cooling coil within the bath for return flow to the carbonator.
  • the dispense unit includes a post-mix dispense valve connected to the concentrate line and to a further re-circulation line extending between the cooler and the dispense unit within the python for circulating a diluent such as water.
  • both re-circulation lines are connected to a common water supply and the diluent re-circulation line includes a carbonator for carbonating the water supplied to the post-mix valve.
  • the cooler comprises a bath of coolant, the carbonator being located within the bath and the diluent re-circulation line includes a cooling coil within the bath for return flow to the carbonator.
  • the diluent re-circulation line passes through the cooling module.
  • the diluent re-circulation line by-passes the cooling module.
  • a pump is provided for pumping diluent around the diluent re-circulation line and a motor for the pump is operable to control pump speed in response to the diluent temperature in the diluent re-circulation line.
  • the cooler includes an evaporator coil within the bath, and an agitator for circulating coolant in the bath, wherein a clearance gap is provided between the evaporator coil and a wall of the bath to permit coolant to circulate on both sides of the evaporator coil.
  • a motor for the agitator is operable to control agitator speed in response to coolant temperature in the bath.
  • the coolant is a diluent such as water and both the coolant re-circulation line and concentrate line are connected to a post-mix dispense valve of the beverage dispenser.
  • a further re-circulation line is provided that extends between the cooler and the beverage dispenser within the python for circulating a diluent such as water and both the further re-circulation line and concentrate line are connected to a post-mix dispense valve of the beverage dispenser.
  • the coolant re-circulation line may be connected to the post-mix dispense valve wherein one of the coolant and diluent re-circulation lines circulates still water and the other circulates carbonated water.
  • a beverage dispense system employing a cooling circuit in which a cooling fluid is circulated, a temperature sensor for monitoring the temperature of the cooling fluid and a pump for circulating the cooling fluid in the circuit wherein the pump speed is controlled in response to the temperature of the cooling fluid.
  • the circulation of the cooling fluid can be higher during periods of high cooling demand than during periods of low cooling demand thereby reducing power consumption during periods of low cooling demand.
  • the cooling circuit may provide cooling for one or more product lines.
  • the product lines may contain a concentrate such as a syrup or flavour for mixing with a diluent such as still or carbonated water to produce a desired beverage.
  • the cooling circuit may form part of the dispense circuit and contain diluent for mixing with concentrate that has been cooled by the diluent prior to dispense.
  • the cooling circuit may be separate from the dispense circuit and contain a coolant for cooling both the concentrate and diluent.
  • a method of controlling circulation of fluid in a cooling circuit for a beverage dispense system in response to the temperature of the fluid whereby the circulation of cooling fluid is increased in response to an increase in cooling demand.
  • the cooling fluid may be a diluent such as still or carbonated water for a post-mix beverage in which the diluent is mixed with a concentrate such as a syrup or flavour that has been cooled by the diluent prior to dispense.
  • a diluent such as still or carbonated water for a post-mix beverage in which the diluent is mixed with a concentrate such as a syrup or flavour that has been cooled by the diluent prior to dispense.
  • a beverage dispense system for a post-mix beverage comprising a post-mix dispense valve connected to sources of a diluent and a concentrate, wherein a supply line for the concentrate passes through a cooling chamber adjacent to the dispense valve.
  • the source of concentrate can be located close to the dispense valve reducing the length of the concentrate line making replacement of the concentrate source easier, reducing concentrate waste and facilitating cleaning of the concentrate line.
  • a method of dispensing a post-mix beverage comprising providing a post-mix dispense valve, connecting the dispense valve to sources of a diluent and a concentrate, and cooling the concentrate by passage through a cooling chamber positioned adjacent to the dispense valve.
  • the diluent may be passed through the cooling chamber to cool the concentrate and the circulation of diluent may be controlled in response to the cooling demand.
  • an ice bank cooler comprising a bath containing a coolant, an evaporator coil in the bath for cooling the coolant and forming a thermal reserve of frozen coolant on the evaporator coil, and an agitator for agitating coolant in the bath wherein a motor driving the agitator is operable in response to the coolant temperature in the bath.
  • the circulation of the coolant in the bath can be increased by employing a higher motor speed during periods of high cooling demand than during periods of low cooling demand thereby reducing power consumption during periods of low cooling demand.
  • an eighth aspect of the invention there is provided a method of controlling agitation of coolant in an ice bank cooler for a beverage dispense system in response to the temperature of the coolant in the cooler whereby the coolant circulation is increased in response to an increase in cooling demand.
  • an ice bank cooler comprising a bath containing a coolant, an evaporator coil in the bath for cooling the coolant and forming a thermal reserve of frozen coolant on the evaporator coil, and an agitator for agitating coolant in the bath wherein the coil is arranged so that coolant circulated in the cooler by the agitator passes over frozen coolant on both sides of the coil.
  • a method of controlling temperature of coolant in an ice bank cooler for a beverage dispense system by arranging an evaporator coil in the cooler so that coolant circulated in the cooler passes over frozen coolant on both sides of the coil.
  • a python for a beverage dispense system comprising a core having a plurality of fluid lines formed integrally by extrusion and a cover of thermal insulation around the core.
  • any number of fluid lines can be provided according to the system requirements and the core can be cut to the required length of the python and covered with thermal insulation.
  • a method of forming a python for a beverage dispense system comprising extruding a core having a plurality of fluid lines and covering the core with thermal insulation material.
  • a beverage dispense system for a post-mix beverage comprising a diluent source, a concentrate source, a post-mix dispense valve, a diluent line for supply of diluent from the diluent source to the post-mix dispense valve, a concentrate line for supply of concentrate from the concentrate source to the post-mix dispense valve, a cooler located distally from the post-mix dispense valve, and a heat exchange unit located proximally to the post-mix dispense valve, wherein the diluent line comprises a re-circulation loop for circulating diluent between the cooler and the post-mix dispense valve, and the concentrate is cooled in the heat exchange unit by heat exchange with diluent in the re-circulation loop.
  • a post-mix beverage dispense system comprising a manifold valve block 1 provided with a plurality of post-mix dispense valves generally designated by the reference number 3.
  • the manifold valve block 1 has six dispense valves 3a, 3b, 3c, 3d, 3e, 3f but it will be understood that the number of dispense valves may be chosen according to requirements.
  • the dispense valves 3 are connected by individual supply lines generally designated by the reference number 5 to separate supplies of a concentrate generally designated by the reference number 7.
  • a concentrate generally designated by the reference number 7.
  • this arrangement is not essential and that the number of supply lines and supplies of concentrate may be varied according to the number of dispense valves and the beverage requirements.
  • two or more dispense valves may be connected to a common supply of concentrate for dispense of the same beverage.
  • the manifold valve block 1 is also connected to a diluent re-circulation line or loop generally designated by reference number 9 for supplying diluent to each of the dispense valves 3a,3b,3c,3d,3e,3f for mixing with concentrate at the point of dispense to deliver a desired beverage to a container such as a glass, cup or the like placed under an outlet (not shown) of the associated dispense valve 3a,3b,3c,3d,3e,3f.
  • the re-circulation loop 9 contains carbonated water (often referred to as "soda" water) for dispense of carbonated post-mix beverages from the dispense valves 3. It will be understood, however, that this is not essential and that any other suitable diluent may be employed such as still water for dispense of non-carbonated drinks such as fruit juices.
  • the dispense valves 3 are configured to mix carbonated water and concentrate in the relative proportions required for the beverage to be dispensed.
  • the relative proportions may vary for different beverages and the valves are configured individually on initial set-up according to the beverage to be dispensed.
  • Such configuration may be carried out manually or automatically.
  • the dispense valves 3 may be controlled by a programmable controller such as a microprocessor that allows the relative proportions of diluent and concentrate to be set on an individual basis at any time by a service engineer.
  • the controller may also control other functions of the dispense system via a suitable user interface for operating the dispense valves 3 according to customer selection of a desired beverage.
  • the dispense valves 3 may be manually operable.
  • the diluent re-circulation loop 9 includes a carbonator tank 11 and a circulation pump 13 driven by an electric motor 14.
  • the carbonator tank 11 is provided at a location remote from the manifold valve block 1, for example in a storage area such as a cellar or cold room, and in this embodiment, is immersed in a bath of chilled water provided by an ice bank cooler 15. Chilled carbonated water is pumped around the re-circulation loop 9 from the carbonator tank 11 to the manifold valve block 1 and back to the carbonator tank 11.
  • the carbonated water returning to the carbonator tank 11 passes through a cooling coil 17 immersed in the chilled water bath of cooler 15 to cool the carbonated water prior to re-entering the carbonator tank 11.
  • the re-circulation loop 9 is contained in an insulated sheath 19 (commonly referred to as a "python") and the temperature of the carbonated water returning to the carbonator tank 11 is monitored by a temperature sensor 20 provided before the cooling coil 17 for a purpose described later herein.
  • a temperature sensor 20 provided before the cooling coil 17 for a purpose described later herein.
  • the carbonator tank 11 has an inlet connected to a source of still water such as mains water via a supply line 25 for adding still water to the carbonator tank 11 to replace carbonated water that has been dispensed when the water level in the carbonator tank 11 falls to a pre-determined minimum.
  • the upper and lower water levels in the carbonator tank 11 are controlled by level sensors (not shown) that also control operation of a pump 27 in the water supply line 25 to boost the water pressure for addition to the carbonator tank 11 where it is simultaneously carbonated by injecting a supply of carbonating gas into the water stream as it is added to the carbonator tank 11.
  • the pressure of carbonating gas in the headspace above the water level in the carbonator tank 11 is maintained at a level sufficient to prevent the carbonating gas coming out of solution so that the desired carbonation level of the carbonated water circulating in the carbonated water re-circulation loop 9 is maintained.
  • the carbonating gas is carbon dioxide but other gases such as nitrogen may be employed and the term "carbonating" gas is to be construed accordingly.
  • the water supply line 25 passes through a cooling coil 29 immersed in the chilled water bath of the cooler 15 upstream of a T-junction 31 for supply of chilled water to either the carbonating tank 11 or to a coolant re-circulation line or loop 21 according to demand. Cooling the still water before it is added to the carbonator tank 11 assists the carbonation process to achieve the desired carbonation level in the carbonated water for dispense of carbonated beverages from the dispense valves 3.
  • the coolant re-circulation loop 21 passes from the cooler 15 to a cooling module 32 adjacent to the manifold valve block 1 for cooling concentrate supplied to the manifold valve block 1 in the supply lines 5a,5b,5c,5d,5e,5f.
  • the cooling module 32 has a chamber 33 with an inlet connected to the re-circulation loop 21 to receive chilled water from the cooler 15 and an outlet connected to the re-circulation loop 21 to return the water back to the cooler 15.
  • the return flow of water passes through a cooling coil 35 immersed within the chilled water bath of cooler 15.
  • the water is circulated around the coolant loop 21 by a pump 23.
  • the coolant re-circulation loop 21 is contained in the insulated sheath 19 and the temperature of the water returning to the cooler 15 is monitored by a temperature sensor 39 provided before the cooling coil 35 for a purpose described later herein.
  • the manifold valve block 1 and coolant chamber 33 are contained in a beverage dispenser, for example in a dispense tower (not shown), provided at a location remote from the cooler 15 such as a bar or similar serving area where the tower may be located on a counter top for connection to the various supply lines 5 for the concentrates 7, and the re-circulation loops 9 and 21 for carbonated water and coolant.
  • the re-circulation loop 9 may supply carbonated water to more than one tower 1 in the same or different serving areas.
  • the carbonator tank 11 may supply carbonated water to separate re-circulation loops 9 for supply to more than one tower.
  • the re-circulation loop 21 may supply coolant to more than one tower 1 in the same or different serving areas.
  • separate re-circulation loops 21 may be provided for supply of coolant to more than one tower. All combinations and configurations are possible according to the number and position of the towers.
  • the present invention removes the concentrate lines from the python and cools the concentrate in the dispense tower. More specifically, the concentrate is cooled within the tower immediately prior to dispense and the supply lines 5 passing through the coolant chamber 33 contain a significantly lower volume of concentrate that is subjected to cooling compared to existing systems in which the concentrate supply lines are contained in the python 19.
  • the concentrate supply lines 5a,5b,5c,5d,5e,5f pass through the coolant chamber 33 within the tower to the manifold valve block 1.
  • the chamber 33 is insulated to prevent heat exchange between the coolant in the chamber 33 and the warmer surroundings in the serving area.
  • the carbonated water re-circulation loop 9 by-passes the coolant chamber 33 and is connected to the manifold valve block 1 within the tower 1.
  • the coolant re-circulation loop 21 is connected to the chamber 33 for circulating chilled still water through the chamber 33 to cool the concentrate delivered in supply lines 5a,b,5c,5d,5e,5f to the dispense valves 3a,3b,3c,3d,3e,3f.
  • the chamber 33 is provided with an internal flow guide 37 that directs the flow of coolant through the chamber 33 to optimise heat exchange with the concentrate supply lines 5a,5b,5c,5d,5e,5f passing through the chamber 33.
  • the flow guide 37 comprises a partition wall that divides the chamber 33 into an inlet chamber 33a and an outlet chamber 33b. Coolant from the re-circulation loop 21 enters the inlet chamber 33a at the lower end of the coolant chamber 33. The coolant is confined by the flow guide 37 to flow upwards to the upper end of the coolant chamber 33 where it flows across the partition wall into the outlet chamber 33b. The coolant is confined by the flow guide 37 to flow downwards to the lower end of the coolant chamber 33 where it exits the coolant chamber and returns to the re-circulation loop 21.
  • three of the concentrate supply lines pass through the inlet chamber 33a and the other three concentrate supply lines pass through the outlet chamber 33b.
  • the concentrate supply lines 5 may be employed as desired.
  • the lines are shown extending linearly through the coolant chamber 33, this is not essential and other configurations of the concentrate lines within the coolant chamber 33 may be employed such as coils to increase the surface area available for heat transfer to achieve the desired cooling of the concentrate.
  • other configurations of coolant chamber 33 may be employed to direct the flow of coolant over the concentrate supply lines 5 to achieve the desired cooling of the concentrate.
  • the above arrangement reduces the length of the concentrate supply lines 5a,5b,5c,5d,5e,5f which reduces syrup wastage and makes sanitisation of the lines easier.
  • the concentrate sources can be sited close to the dispense tower, for example on a shelf under the counter top in the serving area, which simplifies replacement of the concentrate sources.
  • the concentrate and diluent are mixed in a ratio approximately of 1:5 and a temperature of approximately 4 to 5°C in the dispensed beverage can be achieved with a concentrate temperature of around 14°C where the diluent temperature is about 2°C.
  • Passage of the concentrate supply lines 5 through the cooling chamber 33 is generally sufficient to achieve the necessary cooling of the concentrate without passing the concentrate lines 5 through the python 19 or the cooler 15.
  • the syrup cooling requirement in the cooling chamber 33 is dependent on a number of factors including the ambient temperature and beverage dispense while heat gain in the carbonated water circuit is dependent on a number of factors including the ambient temperature, the python (length, insulation, number of tubes etc) and beverage dispense.
  • the present invention provides temperature sensors 20 and 39 to monitor the temperature of the return flows of carbonated water in the diluent re-circulation loop 9 from the manifold valve block 1 to the carbonator tank 11 and of still water in the coolant re-circulation loop 21 from the cooling chamber 33 to the cooler 15.
  • the temperatures detected by the sensors 20,39 are used to control operation of the re-circulation pumps 13,23 respectively.
  • both pumps 13,23 are twin-speed pumps driven by electric motors 14,40 respectively that are switched from low speed, for example 800 rpm, to high speed, for example 1400 rpm, when the temperature of detected by the associated sensor 20,39 rises above a pre-set temperature, for example 2°C for the carbonated water and 2°C for the still water.
  • a pre-set temperature for example 2°C for the carbonated water and 2°C for the still water.
  • the system is designed so that, in periods of low cooling demand when the temperatures of the carbonated water and still water in the re-circulation loops 9,21 are below the pre-set temperatures such as in the stand-by mode or in periods of low dispense, the re-circulation pumps 13,23 are switched to the low speed to reduce energy consumption and, in periods of high cooling demand, if the temperatures of the carbonated water or still water in the re-circulation loops 9,21 rise above the pre-set temperatures, such as in the dispense mode or at higher ambient temperatures, the associated re-circulation pump 13,23 is switched to the high speed to meet the increased cooling demand. In this way, operation of the re-circulation pumps 13,23 is more energy efficient leading to cost savings.
  • the pumps 13,23 may be a twin-speed pumps for selection of high or low speeds as described or one or both pumps may be a variable speed pump such that the pump speed can be adjusted to provide high and low speeds and any intermediate speeds as desired. Where a variable pump speed is permitted, this may be controlled by a suitably programmed microprocessor or other control system responsive to the temperature detected by the sensors 20,39.
  • the coolant re-circulation loop 21 is also connected to the manifold valve block 1 which can be designed so that each dispense valve can selectively dispense a mixture of concentrate and either carbonated water from re-circulation loop 9 or still water from re-circulation loop 21 or a mixture of both carbonated water and still water. In this way, carbonated drinks, or still drinks or drinks with a variable carbonation level can be dispensed.
  • the manifold valve block 1 may be designed so that one or more dispense valves can dispense the carbonated water and the or each of the remaining dispense valves can dispense the still water.
  • one or more dispense valves may be configured to dispense diluent only, for example to dispense still or carbonated water without any concentrate. Other arrangements that can be employed will be apparent to those skilled in the art.
  • the still water re-circulation line or loop 21 in Figure 1 is omitted and the coolant chamber 33 is connected to the diluent re-circulation line or loop 9.
  • the chilled carbonated water supplied to the manifold valve block 1 also passes through the coolant chamber 33 to cool the syrup supplied to the manifold valve block 1 in the concentrate supply lines (not shown in Figure 3 for clarity).
  • one re-circulation loop can be used both to supply diluent to the manifold valve block and to cool the concentrate.
  • the operation of this modified system is similar to that of Figure 1 and will be understood from the description already provided. With this arrangement, the system only dispenses carbonated drinks. It will be understood, that the system of Figure 1 could be adapted so as to dispense only still drinks by omitting the carbonated water re-circulation loop 9 in Figure 1 and connecting the still water loop 21 to the manifold valve block 1.
  • ice bank coolers typically comprise a bath containing water that is cooled by placing an evaporator of a refrigeration circuit in the bath so that ice forms on the evaporator during periods of low cooling demand to provide a thermal reserve for periods of high cooling demand during which the ice melts to provide additional cooling.
  • a sub-zero ice bank may be produced by the use of an additive that suppresses the freezing point of water. For example an aqueous mixture of water with glycol, a salt, antifreeze or other suitable material added to the water in the bath.
  • the evaporator is situated close to the side wall of the bath and the water in the bath is circulated by an agitator driven by an electric motor to wash across the surface of the ice bank on the inwardly facing side of the evaporator to melt the ice during periods of high demand. Washing across one side of the ice bank reduces the available surface area for cooling during periods of high demand which reduces efficiency.
  • the present invention provides the ice bank cooler 15 with an evaporator coil 41 spaced away from the side wall of the bath so that water circulated by the agitator 43 washes across both sides of the coil 41 as shown by the arrows thereby doubling the available surface area of the ice bank 44 that forms on the coil 41 for the additional cooling required during periods of high demand.
  • the circulation of the water within the bath requires improved performance of the agitator 43.
  • more power is required to operate the agitator 43 during periods of high demand and the present invention employs a temperature sensor 45 to monitor the temperature of the water in the bath and control operation of a motor 47 driving the agitator 43 in response to the water temperature.
  • the motor 47 is a twin-speed motor that is switched from low speed, for example 1500 rpm, to high speed, for example 3000 rpm, when the temperature of the water detected by the sensor 45 rises above a pre-set temperature, for example 1°C. It will be understood, however, that other motor speeds may be employed to take account of factors such as the cooling requirement, the capacity of the cooler and other design parameters of the system.
  • the motor 47 is switched to the low speed to reduce energy consumption and, in periods of high cooling demand when the temperature of the water in the water bath circuit rises above the pre-set temperature such as in the dispense mode, the motor 45 is switched to the high speed to operate the agitator 43 to meet the increased cooling demand. In this way, operation of the agitator and motor combination is more energy efficient leading to cost savings.
  • the agitator 43 may be driven with a twin-speed motor for selection of high or low agitation speeds as described or a variable speed motor may be employed such that the agitator speed can be adjusted to provide high and low speeds and any intermediate speeds as desired. Where a variable agitator speed is permitted, this may be controlled by a suitably programmed microprocessor or other control system responsive to the temperature detected by the temperature sensor 45.
  • FIG. 5 and 6 there is shown an alternative python design according to the present invention.
  • the diluent lines, concentrate lines and coolant lines are bundled together within an insulated sheath.
  • the diameter of the python is dependent on the number and size of individual lines that are wrapped within the sheath.
  • the diameter of the python increases with increased number of lines with the result that construction, handling and installation of the python becomes more difficult and the available surface area of the python for heat transfer from ambient increases.
  • the present invention simplifies the python construction by removing the concentrate lines through the provision of cooling for the concentrate in the dispense tower and forming lines 49,51 for the diluent and coolant respectively as a single extrusion 53 that can be cut to the required length, formed into an annular configuration as shown by the arrows, surrounded with insulation 55 and provided with quick-fit connectors (not shown) at both ends for attaching the diluent and coolant lines 49 and 51 respectively to matching connectors on the cooler 15 and the dispense tower.
  • pythons having any desired length can be made from a common extrusion and provided with the appropriate fluid connections at each end for connection to matching connectors on the cooler 15 and dispense tower 1 when the python is installed. This is easier than bundling several separate fluid lines together within an insulation sheath. Also, the overall diameter of the python can be reduced thereby reducing the weight of the python making handling and installation easier and reducing the surface area for heat exchange with the environment. Alternatively or additionally, the python can have insulation of increased thickness to reduce heat exchange with the environment without increasing the overall diameter of the python compared to existing python designs.
  • the above-described system has a number of advantages and benefits. For example lower energy consumption by reducing the heat gain and controlling the speed of the motors driving the re-circulation pumps and agitator in response to the temperature of the water in the re-circulation loops and water bath respectively. Also easier sanitisation of the concentrate lines and less wastage of concentrate in the concentrate lines can be achieved by removing the concentrate lines from the python and providing shorter concentrate lines from the concentrate sources to the dispense tower. This also allows easier replacement of the concentrate sources by enabling the concentrate sources to be placed below the dispense tower within the serving area. Also reduced installation time may be possible by the use of a customised python that can be connected to the diluent and coolant lines by multi-port block connectors during installation.
  • the invention has been described with particular reference to the dispense of soft drinks, it will be understood that the invention is not limited to such application and the invention could be employed for the dispense of alcoholic drinks such as cocktails while features of the invention could be employed in systems for the dispense of alcoholic drinks.
  • the ice bank cooler could be used to cool beer, lager, cider and the like for dispense.
  • a beverage dispense system for a post-mix beverage comprising a beverage dispense unit at a first location, a cooler at a second location remote from the dispense unit, a python extending from or near the cooler to or near the dispense unit, a concentrate source at the first location, a concentrate line extending between the concentrate source and the dispense unit without passing through the python, a cooling module at the first location, a coolant re-circulation line extending between the cooler and the cooling module within the python, wherein the cooling module comprises a chamber through which the concentrate line passes and the chamber is connected to the coolant re-circulation line for passing coolant through the chamber to transfer heat from the concentrate to the coolant for cooling the concentrate.
  • a method of dispensing a post-mix beverage comprising providing a post-mix beverage dispenser at a first location, providing a cooler at a second location remote from the beverage dispenser, providing a concentrate source at the first location, connecting a concentrate line from the concentrate source to the beverage dispenser without passing through the python, providing a cooling module at the first location, providing a coolant re-circulation line extending between the cooler and the cooling module within a python, connecting the coolant re-circulation line to a chamber of the cooling module, and passing the concentrate line through the chamber for cooling the concentrate by heat exchange with the coolant in the chamber.
EP10194049.2A 2006-07-08 2007-07-09 Refroidisseur banc de glace Active EP2295369B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0613596A GB2440329B (en) 2006-07-08 2006-07-08 Beverage dispense
EP07252746.8A EP1876137B1 (fr) 2006-07-08 2007-07-09 Distributeur de boisson

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP07252746.8A Division EP1876137B1 (fr) 2006-07-08 2007-07-09 Distributeur de boisson
EP07252746.8 Division 2007-07-09

Publications (2)

Publication Number Publication Date
EP2295369A1 true EP2295369A1 (fr) 2011-03-16
EP2295369B1 EP2295369B1 (fr) 2016-04-13

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EP10194049.2A Active EP2295369B1 (fr) 2006-07-08 2007-07-09 Refroidisseur banc de glace
EP07252746.8A Active EP1876137B1 (fr) 2006-07-08 2007-07-09 Distributeur de boisson
EP10194051.8A Not-in-force EP2295370B1 (fr) 2006-07-08 2007-07-09 Système de distribution de boissons

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EP07252746.8A Active EP1876137B1 (fr) 2006-07-08 2007-07-09 Distributeur de boisson
EP10194051.8A Not-in-force EP2295370B1 (fr) 2006-07-08 2007-07-09 Système de distribution de boissons

Country Status (5)

Country Link
EP (3) EP2295369B1 (fr)
DK (1) DK1876137T3 (fr)
ES (1) ES2424148T3 (fr)
GB (3) GB2448621B (fr)
PL (1) PL1876137T3 (fr)

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US10793413B2 (en) 2015-05-05 2020-10-06 Cornelius Beverage Technologies Limited Coolant recirculation apparatus for a beverage dispense system

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GB2452919B (en) 2007-09-18 2013-02-13 Scottish & Newcastle Plc Systems and methods for dispensing beverage
WO2009087336A1 (fr) * 2008-01-08 2009-07-16 Imi Cornelius (Uk) Limited Distributeur de boissons post-mélange équipé d'un dispositif de refroidissement
GB0918840D0 (en) * 2009-10-28 2009-12-09 Diageo Great Britain Ltd Slush machine
GB2558112B (en) * 2012-06-01 2019-06-26 Cornelius Beverage Tech Limited Method of controlling condensation on a beverage dispense head
WO2015004443A1 (fr) * 2013-07-12 2015-01-15 Britvic Soft Drinks Limited Système de distribution de boisson réfrigérée doté d'un carbonateur, et procédé correspondant
WO2016014045A1 (fr) * 2014-07-23 2016-01-28 Manitowoc Foodservice Companies, Llc Procédé et système de recirculation pour distributeur de boissons
US11034569B2 (en) 2018-02-14 2021-06-15 Taphandles Llc Cooled beverage dispensing systems and associated devices
EP3927648B1 (fr) * 2019-02-21 2024-04-24 The Coca-Cola Company Système de distribution de boisson avec systèmes de stockage de micro-ingrédients à distance
US11339045B2 (en) 2020-10-20 2022-05-24 Elkay Manufacturing Company Flavor and additive delivery systems and methods for beverage dispensers

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GB1209544A (en) 1968-07-15 1970-10-21 Gaskell & Chambers Non Drip Me Improvements in or relating to beverage coolers
US4545505A (en) * 1982-07-14 1985-10-08 Reed Industries, Inc. Electronic control circuits for electrically conductive liquids/solids
EP0315439A2 (fr) 1987-11-02 1989-05-10 The Coca-Cola Company Système de commande d'un accumulateur de glace pour un distributeur de boissons
GB2213246A (en) 1987-12-03 1989-08-09 Imi Cornelius Beverage cooler
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GB2291698A (en) 1994-07-22 1996-01-31 Imi Cornelius Beverage cooling systems
GB2317680A (en) 1996-09-20 1998-04-01 Daniel Joseph Ryan An ice bank cooler system
WO2002084188A1 (fr) * 2001-04-12 2002-10-24 Hartek Beverage Handling Gmbh Dispositif de refroidissement de boissons
US20030071060A1 (en) * 2001-09-20 2003-04-17 Paul Haskayne Beverage dispenser

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Also Published As

Publication number Publication date
GB0804872D0 (en) 2008-04-16
GB2440329B (en) 2009-11-04
EP1876137A1 (fr) 2008-01-09
GB0613596D0 (en) 2006-08-16
PL1876137T3 (pl) 2013-10-31
EP2295370B1 (fr) 2016-04-13
ES2424148T3 (es) 2013-09-27
EP1876137B1 (fr) 2013-05-22
GB0809292D0 (en) 2008-07-02
GB2448621A (en) 2008-10-22
EP2295369B1 (fr) 2016-04-13
GB2440329A (en) 2008-01-30
EP2295370A1 (fr) 2011-03-16
GB2448621B (en) 2010-04-28
DK1876137T3 (da) 2013-07-29
GB2446312B (en) 2009-02-11
GB2446312A (en) 2008-08-06

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