EP1924522A1 - Cooling system for beverages - Google Patents

Cooling system for beverages

Info

Publication number
EP1924522A1
EP1924522A1 EP06795354A EP06795354A EP1924522A1 EP 1924522 A1 EP1924522 A1 EP 1924522A1 EP 06795354 A EP06795354 A EP 06795354A EP 06795354 A EP06795354 A EP 06795354A EP 1924522 A1 EP1924522 A1 EP 1924522A1
Authority
EP
European Patent Office
Prior art keywords
thermal exchange
exchange fluid
tank
fluid
glycol
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Withdrawn
Application number
EP06795354A
Other languages
German (de)
French (fr)
Inventor
Riccardo Guadalupi
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.)
Vin Service SRL
Original Assignee
Vin Service SRL
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Vin Service SRL filed Critical Vin Service SRL
Publication of EP1924522A1 publication Critical patent/EP1924522A1/en
Withdrawn legal-status Critical Current

Links

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
    • B67D1/08—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
    • 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
    • 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
    • B67D2210/00099—Temperature control
    • B67D2210/00104—Cooling only

Definitions

  • the present invention generally relates to the dispensing of cooled beverages, and particularly, a system for cooling beverages that are dispensed by drawing columns.
  • Known beverage cooling systems generally comprise a common refrigerating unit, the evaporator thereof being placed in a thermal exchange relationship with a tube bundle within which beverages flow.
  • a thermal- exchange gaseous fluid such as Freon or the like, is generally caused to circulate in a traditional refrigerating circuit.
  • the evaporator and the tubes are housed in a tank filled with a thermal exchange liquid, such as water or other suitable liquid substance, in order to provide the thermal exchange between the refrigerating circuit and the beverages flowing within the tube bundle housed in the tank and immersed in the thermal exchange liquid.
  • a thermal exchange liquid such as water or other suitable liquid substance
  • a refrigeration of one or more dispensing columns is often required to be provided, such that the beverage in the vicinity of the delivery tap can be maintained at a temperature sufficiently proximate to the one deemed ideal for drawing.
  • Refrigerating circuits that are already installed for refrigerating the thermal exchange liquid in the tank generally reach such temperatures as to allow a permanent layer of ice to be formed in the thermal exchange liquid. This temperature is however too low for cooling also the delivery columns.
  • the task of the present invention is accordingly to provide a beverage cooling system which allows overcoming the drawbacks of the prior art.
  • an object of the present invention is to provide a beverage cooling system, which is capable of ensuring both the refrigeration of beverages and refrigeration of one or more delivery columns without compromising beverages being maintained at the most suitable temperature for drawing.
  • Another object of the present invention is to provide a cooling system of the type mentioned above, which is particularly small-sized.
  • a further object of the present invention is to provide a cooling system of the type mentioned above, which is particularly simple and practical to manage.
  • the present invention relates to a beverage cooling system that has at least one refrigerating circuit and thermal exchange means between the refrigerating circuit and a beverage dispensing assembly, characterized in that the thermal exchange means include at least one first thermal exchange device between the refrigerating circuit and a first thermal exchange fluid, as well as at least one second thermal exchange device between the first thermal exchange fluid and a second thermal exchange fluid.
  • the first thermal exchange device includes at least one first tank containing the first thermal exchange fluid
  • the second thermal exchange device includes at least one second tank containing the second thermal exchange fluid.
  • the first thermal exchange fluid preferably consists of a liquid with a freezing temperature lower than -5°C, such as glycol or a glycol-containing liquid mixture, whereas the second fluid consists of water or a water-containing liquid mixture.
  • the evaporator of the refrigerating circuit is housed in the first tank and immersed in glycol, for example.
  • the latter is refrigerated and circulated in a coil placed in the second tank and immersed in the second thermal exchange fluid (water) such as to refrigerate the latter.
  • the beverage delivery ducts to the dispensing assembly are also housed and immersed in water in the second tank.
  • a mixing device is provided to adjust the refrigeration temperature of the column, which is entered by a fraction of the backflow of the glycol from the coil immersed in the second tank, i.e. a fraction of glycol that is at a higher temperature, as it has already removed heat from the fluid in the second tank, and a fraction of the glycol taken from the first tank, i.e. at a lower temperature.
  • Fig. 1 is a perspective view of a cooling system according to a possible embodiment of the present invention, with several parts not being shown for clarity purposes;
  • Fig. 2 is a general layout of a cooling system according to the present invention being connected to a beverage dispensing assembly. MODES FOR CARRYING OUT THE INVENTION
  • a refrigerating circuit 10 a first tank 20 containing a first thermal exchange fluid and a second tank 50 containing a second thermal exchange fluid.
  • the first thermal exchange fluid in the tank 20 preferably consists of a liquid with freezing temperature lower than -5°C, such as glycol or a glycol- containing liquid mixture, whereas the second thermal exchange fluid consists of water or a water-containing liquid mixture.
  • a liquid with freezing temperature lower than -5°C such as glycol or a glycol- containing liquid mixture
  • the second thermal exchange fluid consists of water or a water-containing liquid mixture.
  • a temperature-adjusting device 30 allows setting and maintaining the desired temperature.
  • the glycol is circulated in a coil 25 that is housed in the second tank 50 and immersed in water.
  • the glycol is taken from the tank 20 through an intake duct 21 by means of a pump 22 driven by a motor 23.
  • the glycol is then circulated in the coil 25 through a delivery duct 24 and is fed back to the tank 20 through a return duct 26.
  • the glycol flowing back to the tank 20 has removed heat from the water contained in the tank 50 and is thus at a higher temperature than the glycol contained in the tank 20.
  • Fig. 1 shows only a part of the entire glycol circuit. This allows, however, to point out several details of the system according to the present invention.
  • a stirrer (not shown) to pass therethrough, which is commonly used for maintaining the glycol constantly moved.
  • a stirrer (not shown) is also placed above the tank 50, fixed to a suitable support, in order to keep in movement the water which is contained therein.
  • a section of the glycol circulation circuit is also visible in the layout in Fig. 2, which is intended to refrigerate a delivery column 70.
  • This circuit section particularly comprises a mixer 45, which can be operated by means of the knob 43, that receives a fraction of the glycol flowing back from the coil 25 through a branch 46 on the return duct 26. Another glycol fraction reaches the mixer 45 directly from the tank 20 through an intake duct 47.
  • a pump 48 is provided at the outlet of the mixer, which supplies the glycol to the delivery column 70 through a delivery duct 49.
  • the glycol circulated through the column 70 is then caused to flow back to the tank 20 through a return duct 55.
  • the mixer 45 can be of any type, such as that described in EP-0928772 in the name of the same Applicant.
  • FIG. 2 In the layout in Fig. 2, at least one is depicted of the coils 32 that are housed in the tank 50, immersed in water, to allow the refrigeration of a beverage drawn through a tap 71 of the column 70.
  • the beverage is taken from a barrel 60 through a duct 31 which leads the beverage flow to a coil 32 and then to the tap 71 of the column 70 through a delivery duct 33. While a dispensing assembly for an individual beverage has been represented for simplicity, it is understood that the beverages delivered can be more than one; more coils 32 will be accordingly provided in the tank 50, one for each beverage.

Landscapes

  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Devices That Are Associated With Refrigeration Equipment (AREA)

Abstract

A beverage cooling system is described, which has at least one refrigerating circuit (10) and thermal exchange means between the refrigerating circuit and a beverage dispensing assembly (70, 71) , wherein the thermal exchange means include at least one first thermal exchange device (12, 20) between the refrigerating circuit and a first thermal exchange fluid, as well as at least one second thermal exchange device (25, 50) between the first thermal exchange fluid and a second thermal exchange fluid.

Description

"Cooling system for beverages"
***********
FIELD OF THE INVENTION
The present invention generally relates to the dispensing of cooled beverages, and particularly, a system for cooling beverages that are dispensed by drawing columns.
BACKGROUND ART
Known beverage cooling systems generally comprise a common refrigerating unit, the evaporator thereof being placed in a thermal exchange relationship with a tube bundle within which beverages flow. A thermal- exchange gaseous fluid, such as Freon or the like, is generally caused to circulate in a traditional refrigerating circuit.
The evaporator and the tubes are housed in a tank filled with a thermal exchange liquid, such as water or other suitable liquid substance, in order to provide the thermal exchange between the refrigerating circuit and the beverages flowing within the tube bundle housed in the tank and immersed in the thermal exchange liquid.
For several types of installations, and/or as a function of the beverages to be dispensed, a refrigeration of one or more dispensing columns is often required to be provided, such that the beverage in the vicinity of the delivery tap can be maintained at a temperature sufficiently proximate to the one deemed ideal for drawing.
For example, as regards the drawing of beer, commercial business managers often require being able to maintain the drawing column at a sufficiently low temperature such as to allow a thin layer of ice to form on the outer surface of the column, not only in order to maintain the drawn beverage at its optimum temperature, but also to create an appealing visual effect to the consumer. The delivery column is required, however, to be prevented from reaching a temperature as low as to cause the freezing of the delivered beverage. In the case of beer, temperature must not be lower than about -5°C.
Refrigerating circuits that are already installed for refrigerating the thermal exchange liquid in the tank generally reach such temperatures as to allow a permanent layer of ice to be formed in the thermal exchange liquid. This temperature is however too low for cooling also the delivery columns.
Accordingly, when the beverages and one or more delivery columns require to be refrigerated, a further refrigerating circuit has been proposed so far in the prior art to be placed beside, which is exclusively dedicated to the cooling of the column.
Though feasible, this is however a rather complicated, bulky solution which is often difficult to apply and/or install.
The task of the present invention is accordingly to provide a beverage cooling system which allows overcoming the drawbacks of the prior art.
Within this task, an object of the present invention is to provide a beverage cooling system, which is capable of ensuring both the refrigeration of beverages and refrigeration of one or more delivery columns without compromising beverages being maintained at the most suitable temperature for drawing.
Another object of the present invention is to provide a cooling system of the type mentioned above, which is particularly small-sized.
A further object of the present invention is to provide a cooling system of the type mentioned above, which is particularly simple and practical to manage. SUMMARY OF THE INVENTION
These objects are achieved by the present invention, which relates to a beverage cooling system that has at least one refrigerating circuit and thermal exchange means between the refrigerating circuit and a beverage dispensing assembly, characterized in that the thermal exchange means include at least one first thermal exchange device between the refrigerating circuit and a first thermal exchange fluid, as well as at least one second thermal exchange device between the first thermal exchange fluid and a second thermal exchange fluid. Particularly, the first thermal exchange device includes at least one first tank containing the first thermal exchange fluid and the second thermal exchange device includes at least one second tank containing the second thermal exchange fluid.
The first thermal exchange fluid preferably consists of a liquid with a freezing temperature lower than -5°C, such as glycol or a glycol-containing liquid mixture, whereas the second fluid consists of water or a water-containing liquid mixture.
Practically, the evaporator of the refrigerating circuit is housed in the first tank and immersed in glycol, for example. The latter is refrigerated and circulated in a coil placed in the second tank and immersed in the second thermal exchange fluid (water) such as to refrigerate the latter. The beverage delivery ducts to the dispensing assembly are also housed and immersed in water in the second tank.
It is thus sufficient to control the refrigeration temperature of glycol by means of a thermostat, or any suitable adjusting device, to control the refrigeration temperature of the beverages.
A mixing device is provided to adjust the refrigeration temperature of the column, which is entered by a fraction of the backflow of the glycol from the coil immersed in the second tank, i.e. a fraction of glycol that is at a higher temperature, as it has already removed heat from the fluid in the second tank, and a fraction of the glycol taken from the first tank, i.e. at a lower temperature.
By suitably mixing a fraction of "cold" glycol (at about -80C) and a fraction of "hot" glycol (ranging between about +2 0C and -2 0C), ideal refrigeration temperatures can be maintained in the column (not lower than -5 0C) to obtain the effect of ice accumulation on the outer surface of the column, without compromising the delivery of the beverage being drawn through the column. BRIEF DESCRIPTION OF THE DRAWINGS These and other advantages will be better understood from the description below, which is given as a non-limiting illustration, with reference to the annexed schematic drawings, in which:
Fig. 1 is a perspective view of a cooling system according to a possible embodiment of the present invention, with several parts not being shown for clarity purposes; and
Fig. 2 is a general layout of a cooling system according to the present invention being connected to a beverage dispensing assembly. MODES FOR CARRYING OUT THE INVENTION
In a cooling system according to the present invention as illustrated in Fig. 1 and 2, there are provided a refrigerating circuit 10, a first tank 20 containing a first thermal exchange fluid and a second tank 50 containing a second thermal exchange fluid.
The first thermal exchange fluid in the tank 20 preferably consists of a liquid with freezing temperature lower than -5°C, such as glycol or a glycol- containing liquid mixture, whereas the second thermal exchange fluid consists of water or a water-containing liquid mixture. For simplicity, while reference will be made below to glycol as the first thermal exchange fluid and water as the second thermal exchange fluid, it is understood that these terms indicate, however, the respective thermal exchange fluids in their broadest sense. The evaporator 12 of the refrigerating circuit 10 is housed in the first tank
20 and is immersed in glycol such as to maintain the glycol at a sufficiently low temperature, such as about -8° C, to allow both the refrigeration of beverages and the refrigeration of one or more delivery columns. A temperature-adjusting device 30 allows setting and maintaining the desired temperature.
The glycol is circulated in a coil 25 that is housed in the second tank 50 and immersed in water. Particularly, the glycol is taken from the tank 20 through an intake duct 21 by means of a pump 22 driven by a motor 23. The glycol is then circulated in the coil 25 through a delivery duct 24 and is fed back to the tank 20 through a return duct 26. The glycol flowing back to the tank 20 has removed heat from the water contained in the tank 50 and is thus at a higher temperature than the glycol contained in the tank 20.
Unlike the layout in Fig. 2, Fig. 1 shows only a part of the entire glycol circuit. This allows, however, to point out several details of the system according to the present invention. For example, on the closure lid 40 of the tank 20 there is provided a central hole 41 for the shaft of a stirrer (not shown) to pass therethrough, which is commonly used for maintaining the glycol constantly moved. A stirrer (not shown) is also placed above the tank 50, fixed to a suitable support, in order to keep in movement the water which is contained therein.
On the lid 40, there can be further seen: a hole 42 for the intake and return ducts for the glycol that is intended to refrigerate a delivery column, and a knob 43 allowing one to operate temperature adjusting means for the glycol supplied to the column. In fact, a section of the glycol circulation circuit is also visible in the layout in Fig. 2, which is intended to refrigerate a delivery column 70.
This circuit section particularly comprises a mixer 45, which can be operated by means of the knob 43, that receives a fraction of the glycol flowing back from the coil 25 through a branch 46 on the return duct 26. Another glycol fraction reaches the mixer 45 directly from the tank 20 through an intake duct 47.
A pump 48 is provided at the outlet of the mixer, which supplies the glycol to the delivery column 70 through a delivery duct 49. The glycol circulated through the column 70 is then caused to flow back to the tank 20 through a return duct 55.
By manually acting on the knob of the mixer 45, it is thus possible to adjust the glycol flow fractions such as to maintain the column 70 at the desired temperature, typically not lower than - 5° C. The mixer 45 can be of any type, such as that described in EP-0928772 in the name of the same Applicant.
In the layout in Fig. 2, at least one is depicted of the coils 32 that are housed in the tank 50, immersed in water, to allow the refrigeration of a beverage drawn through a tap 71 of the column 70. The beverage is taken from a barrel 60 through a duct 31 which leads the beverage flow to a coil 32 and then to the tap 71 of the column 70 through a delivery duct 33. While a dispensing assembly for an individual beverage has been represented for simplicity, it is understood that the beverages delivered can be more than one; more coils 32 will be accordingly provided in the tank 50, one for each beverage.

Claims

1. A beverage cooling system including at least one refrigerating circuit and thermal exchange means between said refrigerating circuit and a beverage dispensing assembly, characterized in that said thermal exchange means include at least one first thermal exchange device between said refrigerating circuit and a first thermal exchange fluid, as well as at least one second thermal exchange device between said first thermal exchange fluid and a second thermal exchange fluid.
2. The system according to claim 1 , wherein said first thermal exchange device includes at least one first tank containing said first thermal exchange fluid, and said second thermal exchange device includes at least one second tank containing said second thermal exchange fluid.
3. The system according to claim 1 or 2, wherein the evaporator of said refrigerating circuit is housed in said first tank and immersed in said first thermal exchange fluid.
4. The system according to claim 1 or 2, wherein the delivery ducts of the beverages to said dispensing assembly are housed in said second tank and immersed in said second thermal exchange fluid.
5. The system according to claim 1 , wherein at least one circuit is provided for circulating said first thermal exchange fluid, said circuit including at least one coil housed in said second tank and connected in fluid communication to said first tank.
6. The system according to claim 5, wherein said coil is immersed in said second thermal exchange fluid.
7. The system according to any of the preceding claims, wherein said circuit for circulating said first thermal exchange fluid includes at least one duct for circulating said first cooling fluid within at least one column of said beverage dispensing assembly.
8. The system according to any of the preceding claims, wherein said circuit for circulating said first thermal exchange fluid comprises means for adjusting the temperature of said first thermal exchange fluid delivered to said at least one duct for circulating said first cooling fluid within at least one column of said beverage dispensing assembly.
9. The system according to claim 8, wherein said means for adjusting the temperature of said first thermal exchange fluid include at least one mixing device which receives a fraction of the backflow from said coil and a fraction of the fluid taken from said first tank.
10. The system according to claim 1 , wherein said first thermal exchange fluid consists of a liquid with a freezing temperature lower than - 5°C.
11. The system according to claim 10, wherein said first thermal exchange fluid consists of glycol or a glycol-containing liquid mixture.
12. The system according to claim 1 , wherein said second thermal exchange fluid consists of water or a water-containing liquid mixture.
EP06795354A 2005-09-09 2006-08-29 Cooling system for beverages Withdrawn EP1924522A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI20051671 ITMI20051671A1 (en) 2005-09-09 2005-09-09 PLANT FOR BEVERAGE REFRIGERATION
PCT/IB2006/002346 WO2007029074A1 (en) 2005-09-09 2006-08-29 Cooling system for beverages

Publications (1)

Publication Number Publication Date
EP1924522A1 true EP1924522A1 (en) 2008-05-28

Family

ID=37561357

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06795354A Withdrawn EP1924522A1 (en) 2005-09-09 2006-08-29 Cooling system for beverages

Country Status (3)

Country Link
EP (1) EP1924522A1 (en)
IT (1) ITMI20051671A1 (en)
WO (1) WO2007029074A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2502593A (en) * 2012-05-31 2013-12-04 Pumps Ltd K Modular cooler for alcoholic beverages
EP3140244B1 (en) * 2014-05-06 2021-03-31 Manitowoc Foodservice Companies, LLC Modular beverage cooling system
US20220219966A1 (en) * 2021-01-08 2022-07-14 Grad Aps Apparatus for dispensing a beverage

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8728295D0 (en) * 1987-12-03 1988-01-06 Imi Cornelius Uk Ltd Beverage cooler
CA2448893A1 (en) * 2003-11-12 2005-05-12 Icefloe Technologies Inc. Method and apparatus for controlled ice crystal formation in a beverage

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007029074A1 *

Also Published As

Publication number Publication date
ITMI20051671A1 (en) 2007-03-10
WO2007029074A1 (en) 2007-03-15

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