GB2204670A - Liquid cooling apparatus - Google Patents
Liquid cooling apparatus Download PDFInfo
- Publication number
- GB2204670A GB2204670A GB08709177A GB8709177A GB2204670A GB 2204670 A GB2204670 A GB 2204670A GB 08709177 A GB08709177 A GB 08709177A GB 8709177 A GB8709177 A GB 8709177A GB 2204670 A GB2204670 A GB 2204670A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cooling apparatus
- satellite
- coolant
- cooling
- refrigerated
- 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.)
- Pending
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
- B67D1/0865—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
-
- 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
Abstract
An apparatus for cooling a plurality of liquid product flows comprises a central cooling apparatus 1 operatively connected to a plurality of satellite cooling apparatus 6, the central cooling apparatus 1 including refrigeration means for creating a refrigerated coolant and coolant conveying means 3, 7, 8 for conveying said refrigerated coolant from said central cooling apparatus to each said satellite cooling apparatus, each said satellite cooling apparatus being arranged to cool a respective product flow by heat exchange between a said product flow and said refrigerated coolant. Each satellite cooling apparatus has a temperature sensor 19 and flow control valve associated therewith. <IMAGE>
Description
LIQUID COOLING APPARATUS
This invention relates to an apparatus for cooling liquid, in particular for cooling beer or other beverages.
It is known to cool beverages which are to be sold at counters or bars. The known apparatus for this purpose falls into one of three categories: 1. Where several different flows of liquid products are to be cooled, a plurality of separate, fully self-contained in-line coolers is provided, one for each flow. A said flow passes through a heat exchange tube within a said cooler and is cooled to the required temperature by means of a refrigeration system within said cooler. The heat exchange between the refrigeration system and the heat exchange tube is normally achieved by means of a water bath, a water and ice bank bath or by means of a direct expansion system.
2. A system as in 1. above but wherein the products are first subjected to a central cooling e.g. in a cellar and are delivered to the individual in-line coolers via insulated tubing. This system does not require the individual coolers to achieve the full cooling load.
3. A centralised system in which all cooling of the products occurs at a single point e.g. in a cellar. A single large tank is equipped with a refrigeration system to create ice and cold water within the tank.
Individual heat exchange tubes for the individual product flows are immersed in the tank to cool the individual product flows and each product flow is delivered to its respective delivery point via suitable tubing. In order to reduce unwanted heat gain during delivery to a dispensing point, the product tubes may be bundled together and insulated. Moreover, a said bundle of product tubes may be clustered around a central cooling tube through which circulates cold water from the central tank. This system is referred to as a
Python system.
These known systems have various disadvantages.
Categories (1) & (2) (a) Utilisation of valuable retail space.
(b) Generation of noise and heat in unwanted spaces.
(c) Installation costs in terms of power supply require
ments at the dispensing points.
(d) Frequent cleaning of the refrigeration system high
side, because of dust accumulation which renders
the system inefficient.
(e) As each unit operates in high ambient temperatures,
then high utilisation of energy to ensure adequate
product cooling is necessary.
(f) Most of the coolers are likely to be subject to
abuse, hence frequent maintenance will be required.
CategorY 3 (a) The major disadvantage is that of lack of adequate
temperature control of the product and no means of
rectification.
It is an object of the present invention to provide a liquid cooling apparatus in which the disadvantages of known apparatus are at least partially alleviated.
According to the present invention there is provided an apparatus for cooling a plurality of liquid product flows, which apparatus comprises a central cooling apparatus operatively connected to a plurality of satellite cooling apparatus, the central cooling apparatus including refrigeration means for creating a refrigerated coolant and coolant conveying means for conveying said refrigerated coolant from said central cooling apparatus to each said satellite cooling apparatus, each said satellite cooling apparatus being arranged to cool a respective product flow by heat exchange between a said product flow and said refrigerated coolant.
Very preferably, temperature control means are provided at each satellite cooling apparatus for controlling the extent of cooling therewithin of a said product flow.
The central cooling apparatus will generally comprise a tank or reservoir for the coolant medium. The tank will generally include the refrigerating means capable of refrigerating the coolant medium within the tank and of creating an ice bank within the tank in accordance with the required cooling load. A condensing unit for the refrigerating means may form an integral part of the tank or may be located remotely therefrom. The conveying means for conveying the refrigerated coolant may be in the form of a pump which is preferably electrically powered. The pump, and any auxiliary apparatus such as agitators, flow controls and temperature controls may form part of the central cooling apparatus.
Preferably, conduits for conveying the refrigerated coolant to each satellite cooling apparatus are insulated to minimise heat gamin. Likewise the central cooling apparatus and the satellite cooling apparatus themselves are preferably thermally insulated.
Although it is envisaged that each satellite cooling apparatus may be supplied with refrigerated coolant directly from the central cooling apparatus via its own separate supply lines. a preferred arrangement for supplying coolant to respective satellite cooling apparatus includes a ring main or loop including a main outward line and a main return line, each separate satellite cooling apparatus being arranged to bridge between said lines so as to receive its required supply of refrigerated coolant. It is of course also possible to arrange for the satellite cooling apparatus to be connected in series; however, such an arrangement may result in a temperature gradient being formed in the supply lines which may prove to be unacceptable.
As has been said, each satellite cooling apparatus is preferably provided with temperature regulating means for regulating the temperature of product within a said satellite cooling apparatus. Such temperature regulating means may comprise a simple thermostatically operable valve located in a flow line for the refrigerated coolant in or adjacent to a said satellite cooling apparatus. Alternatively a temperature sensor may be located in a flow line for the liquid product.
preferably but not essentially either within the satellite cooling apparatus or immediately upstream thereof, which is arranged to control a valve located in the flow line for supplying refrigerated coolant to said satellite cooling apparatus.
Each satellite cooling apparatus may be fitted with a control device capable of maintaining the outlet product temperature and consisting of a gas-filled bellows which operates a flow gate or orifice as a result of temperature changes in the product flowline or in the apparatus. When the flow gate is opened, water or other medium is allowed to pass through the apparatus thus exchanging heat with the product. The sensing part of the control device is positioned at or near the outlet of the product flow line so that a high sensitivity is achieved in terms of temperature changes and thus to provide an accurate dispense temperature for the product. The control is preferably a mechanical device but an electro-mechanical and/or electronic device could be used.
The coolant liquid to be refrigerated may be water, glycol or any other suitable liquid.
Preferably each satellite cooling apparatus is in the form of a small tank or chamber present with an inlet and an outlet for the refrigerated coolant. One or more flow lines for liquid product are generally arranged to pass through the tank or chamber, preferably being.
coiled therewithin for greater heat exchange efficiency. Preferably such a coil or coils is adapted to cause turbulent flow within the refrigerated coolant passing through the chamber or tank thus to increase further the heat exchange efficiency.Alternatively a tube-in-tube arrangement may be employed with the cooling medium passing through either one of the tubes.
the other tube containing the product to be cooled.
An embodiment of the cooling apparatus of the present invention will now be described. by way of example only.
by reference to the accompanying drawings. in which:
Fig. 1 represents diagrammatically an arrangement of an
embodiment of cooling apparatus according to the
present invention;
Fig. 2 is a perspective view of a satellite cooling
apparatus for use in the presentation; and
Fig. 3 is a partially broken away perspective view of
the satellite cooling apparatus of Fig. 2.
Referring to the drawings, a central cooling apparatus 1 includes a tank or reservoir for a coolant liquid. The cooling apparatus 1 is connected to a condensing unit 2 for cooling and refrigerating coolant within the cooling apparatus 1, so as to create refrigerated coolant and an ice bank therewritten. A closed loop in the form of an insulated tube 3 extends from the cooling apparatus and returns thereto, via an inline constrictor 4 which ensures that a suitably high pressure exists within the refrigerated coolant and the supply side, relative to the return side. A pump 5 is provided for circulating the refrigerated coolant within tube 3.A plurality of satellite cooling apparatus 6 is arranged each to bridge across the insulated tube 3, from the supply side to the return side by means of further insulated tubes, 7, 7', 71 1, 7''' and 8, 8, 8' ' , 8' ' ' . As is shown in detail in Figs. 2 and 3, a said satellite cooling apparatus 6 comprises a container provided with an inlet 10 for connection to insulated tube 7 and an outlet 11 for connection to insulated tube 8. The satellite cooling apparatus 6 is also provided with a pair of inlets 12, 13 for liquid products and a respective pair of outlets 14, 15 for said liquid products.Within said satellite cooling apparatus 6 respective pairs of inlets and outlets 12, 14 and 13. 15 are connected by respective coiled tubes 16, 17, the arrangement and disposition of the coils of which are designed to cause turbulent flow and high mixing flow within refrigerated coolant passing through the chamber of the satellite cooling apparatus 6.
All of the elements of the apparatus are preferably insulated e.g. by rock wool, by expanded polystyrene or by polyurethane foam, as shown for example at 18.
A temperature sensor 19 is located in the flow for the liquid product at or adjacent a said inlet 12, 13, for controlling a flow control valve 20 located in the line 7 for the refrigerated coolant.
Any suitable flow control valve may be employed, working e.g. on a bellows and spring principle by means of a snap action or a modulating action or e.g. on a gas or liquid filled phial principle. Desirable characteristics for the valve are as follows: a) it should have a fast response time, e.g. 5 seconds, b) it should have a close temperature differential,
e.g. of 1 to 20C, c) it should be independent of changes in atmospheric
pressure or ambient temperature, d) it should provide minimum flow resistance e.g. not
more than Slb/sq.in. water pressure drop, e) it should have small overall dimensions,
e.g. 5" x 5" x 2".
By means of the present invention there is provided a cooling apparatus for liquid which can possess the following advantages: (a) An accurate method of controlling the product
temperature at the dispense point.
(b) A highly efficient and compact heat exchange
module by virtue of the product coil design
and the fluid flow within the module.
(c) Complementary to the. above, a simple control
device which is capable of controlling the
cooling fluid flow, thus controlling the
product temperature.
(d) A loop system capable of adequately distributing
the cooling fluid through all the satellite
modules.
(e) A simple system capable of being installed with
ease, requiring minimum space utilisation at the
dispense points, using minimum amount of energy
when compared with other systems, and capable of
storing cooling capacity during off peak periods.
It is to be understood that the invention may be performed otherwise than as has been particularly described. The invention includes within its scope all such modifications and amendments as would be apparent to one skilled in the art.
Claims (16)
1. An apparatus for cooling a plurality of liquid product flows, which apparatus comprises a central cooling apparatus operatively connected to a plurality of satellite cooling apparatus, the central cooling apparatus including refrigeration means for creating a refrigerated coolant and coolant conveying means for conveying said refrigerated coolant from said central cooling apparatus to each said satellite cooling apparatus, each said satellite cooling apparatus being arranged to cool a respective product flow by heat exchange between a said product flow and said refrigerated coolant.
2. Apparatus according to claim 1 wherein temperature control means are provided at each said satellite cooling apparatus, for controlling the extent of cooling therewithin of a said product flow.
3. Apparatus according to Claim 1 or 2, wherein the central cooling apparatus comprises a tank or reservoir for the coolant medium, which tank includes said refrigeration means for creating a refrigerated coolant.
said refrigerating means being capable of creating an ice bank within the tank.
4. Apparatus according to Claim 3, wherein the refrigerating means includes a condensing unit forming an integral part of the tank.
5. Apparatus according to Claim 3 wherein the refrigerating unit includes a condensing unit which is located remotely from the tank.
6. Apparatus according to any preceding claim, wherein said conveying means for conveying said refrigerated coolant from said central cooling apparatus to each said satellite cooling apparatus comprises an electrically powered pump.
7. Apparatus according to any preceding claim, wherein insulated conduits are provided for conveying the refrigerated coolant from said central cooling apparatus to each said satellite cooling apparatus.
8. Apparatus according to any preceding claim, wherein a coolant path is provided in the form of a main outward line and a main return line, each said satellite cooling apparatus being arranged to bridge between said lines so as to receive its required supply of refrigerated coolant.
9. Apparatus according to any of Claims 1-7 wherein each satellite cooling apparatus is provided with means whereby it may be supplied with refrigeråted coolant directly from the central cooling apparatus via its own separate supply lines.
10. Apparatus according to Claim 2, or any of Claims 3-9 when dependent thereupon wherein said temperature regulating means comprise a thermostatically operable valve located in a flow line for the refrigerated coolant in or adjacent to a said satellite cooling apparatus.
11. Apparatus according to Claim 2 or in accordance with any of Claims 3-9 when dependent thereupon wherein a temperature sensor is located in a flow line for the liquid product either within the satellite cooling apparatus or immediately up-stream thereof, and is arranged to control a valve located in the flow line for supplying refrigerated coolant to said satellite cooling apparatus.
12. Apparatus according to any preceding claim wherein each satellite cooling apparatus is provided with a control device capable of controlling the outlet product temperature.
13. Apparatus according to Claim 12 wherein each said control device comprises a gas filled bellows arranged to operate upon a flow gate or orifice as a result of temperature changes in the product flow line or in the apparatus.
14. Apparatus according to any preceding claim wherein the coolant liquid is water or glycol.
15. An apparatus for cooling a plurality of liquid product flows, substantially as hereinbefore described, with reference to the accompanying drawings.
16. The features hereinbefore disclosed or their equivalants, in any novel selection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08709177A GB2204670A (en) | 1987-04-16 | 1987-04-16 | Liquid cooling apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08709177A GB2204670A (en) | 1987-04-16 | 1987-04-16 | Liquid cooling apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB8709177D0 GB8709177D0 (en) | 1987-05-20 |
| GB2204670A true GB2204670A (en) | 1988-11-16 |
Family
ID=10615960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08709177A Pending GB2204670A (en) | 1987-04-16 | 1987-04-16 | Liquid cooling apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2204670A (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2241054A (en) * | 1990-02-16 | 1991-08-21 | Whitbread & Co Plc | Cooled beer engine |
| DE9007061U1 (en) * | 1990-06-25 | 1991-10-31 | Bossert, Gerdi, 7730 Villingen-Schwenningen, De | |
| GB2274909A (en) * | 1993-02-08 | 1994-08-10 | Perfection Equip Inc | Cooling systems |
| GB2294750A (en) * | 1994-11-07 | 1996-05-08 | Bass Plc | Dispensing beverages |
| WO1996027552A1 (en) * | 1995-03-08 | 1996-09-12 | Matthew Clark Taunton Limited | Refrigerated drinks dispenser |
| GB2327748A (en) * | 1997-07-25 | 1999-02-03 | Scottish & Newcastle Plc | Cooling apparatus |
| FR2785600A1 (en) * | 1998-11-09 | 2000-05-12 | Dietal Sa | COOLER ASSEMBLY FOR BEVERAGE DISPENSING APPARATUS |
| FR2785601A1 (en) | 1998-11-09 | 2000-05-12 | Dieau | Automatic gravity feed fresh drinks vending machine, with integral cooler |
| GB2346679A (en) * | 1999-02-03 | 2000-08-16 | David Sharp | Controlled cooling of beverages |
| EP1222140A1 (en) * | 1999-09-02 | 2002-07-17 | Matilda Bay Brewing Co. Ltd. | Integrated heat exchanger and liquid dispensing unit |
| WO2004020326A1 (en) * | 2002-08-29 | 2004-03-11 | Kett Donald A | Beverage cooler |
| GB2446792A (en) * | 2007-02-22 | 2008-08-27 | Imi Cornelius | Beverage dispense system |
| GB2454653A (en) * | 2007-11-06 | 2009-05-20 | Scotman Beverage Systems Ltd | Dispensing cooled beverage |
| GB2529222A (en) * | 2014-08-14 | 2016-02-17 | Heineken Uk Ltd | Beverage dispense systems |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202017103897U1 (en) * | 2017-06-30 | 2018-10-02 | Rudolf Caspary | System for cooling a brewing process |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB979035A (en) * | 1962-12-19 | 1965-01-01 | British Syphon Company Ltd | Improvements relating to beverage cooling and dispensing equipment |
| GB1417406A (en) * | 1972-12-18 | 1975-12-10 | Marston Paxman Ltd | Cooling apparatus for beverages |
| GB2179129A (en) * | 1985-06-18 | 1987-02-25 | Paxman Briston Coolers Ltd | Apparatus for cooling and dispensing drinks |
-
1987
- 1987-04-16 GB GB08709177A patent/GB2204670A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB979035A (en) * | 1962-12-19 | 1965-01-01 | British Syphon Company Ltd | Improvements relating to beverage cooling and dispensing equipment |
| GB1417406A (en) * | 1972-12-18 | 1975-12-10 | Marston Paxman Ltd | Cooling apparatus for beverages |
| GB2179129A (en) * | 1985-06-18 | 1987-02-25 | Paxman Briston Coolers Ltd | Apparatus for cooling and dispensing drinks |
Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2241054A (en) * | 1990-02-16 | 1991-08-21 | Whitbread & Co Plc | Cooled beer engine |
| GB2241054B (en) * | 1990-02-16 | 1994-10-26 | Whitbread & Co Plc | A beer engine for a cooled beverage |
| DE9007061U1 (en) * | 1990-06-25 | 1991-10-31 | Bossert, Gerdi, 7730 Villingen-Schwenningen, De | |
| GB2274909A (en) * | 1993-02-08 | 1994-08-10 | Perfection Equip Inc | Cooling systems |
| US5372014A (en) * | 1993-02-08 | 1994-12-13 | Perfection Equipment, Inc. | Modular cooling system for multiple spaces and dispensed beverages |
| GB2274909B (en) * | 1993-02-08 | 1996-07-03 | Perfection Equip Inc | Modular cooling systems for beverage cooling and air conditioning |
| GB2294750A (en) * | 1994-11-07 | 1996-05-08 | Bass Plc | Dispensing beverages |
| GB2294750B (en) * | 1994-11-07 | 1998-11-18 | Bass Plc | Improvements in and relating to dispensing beverages |
| WO1996027552A1 (en) * | 1995-03-08 | 1996-09-12 | Matthew Clark Taunton Limited | Refrigerated drinks dispenser |
| GB2313437A (en) * | 1995-03-08 | 1997-11-26 | Matthew Clark | Refrigerated drinks dispenser |
| GB2313437B (en) * | 1995-03-08 | 1998-08-26 | Matthew Clark | Refrigerated drinks dispenser |
| GB2327748A (en) * | 1997-07-25 | 1999-02-03 | Scottish & Newcastle Plc | Cooling apparatus |
| FR2785600A1 (en) * | 1998-11-09 | 2000-05-12 | Dietal Sa | COOLER ASSEMBLY FOR BEVERAGE DISPENSING APPARATUS |
| CN1106341C (en) * | 1998-11-09 | 2003-04-23 | 迪奥股份有限公司 | Autonomous gravity-feed beverage dispenser with cooling device |
| WO2000027744A1 (en) | 1998-11-09 | 2000-05-18 | Dieau S.A. | Autonomous gravity-feed beverage dispenser with cooling device |
| FR2785601A1 (en) | 1998-11-09 | 2000-05-12 | Dieau | Automatic gravity feed fresh drinks vending machine, with integral cooler |
| US6442960B1 (en) | 1998-11-09 | 2002-09-03 | Dieau S.A. | Autonomous gravity-feed beverage dispenser with cooling device |
| GB2346679A (en) * | 1999-02-03 | 2000-08-16 | David Sharp | Controlled cooling of beverages |
| EP1222140A1 (en) * | 1999-09-02 | 2002-07-17 | Matilda Bay Brewing Co. Ltd. | Integrated heat exchanger and liquid dispensing unit |
| EP1222140A4 (en) * | 1999-09-02 | 2002-12-04 | Matilda Bay Brewing Co Ltd | Integrated heat exchanger and liquid dispensing unit |
| US6672484B2 (en) | 1999-09-02 | 2004-01-06 | Matilda Bay Brewing Co. Limited | Integrated heat exchanger and liquid dispensing unit |
| WO2004020326A1 (en) * | 2002-08-29 | 2004-03-11 | Kett Donald A | Beverage cooler |
| GB2446792A (en) * | 2007-02-22 | 2008-08-27 | Imi Cornelius | Beverage dispense system |
| GB2454653A (en) * | 2007-11-06 | 2009-05-20 | Scotman Beverage Systems Ltd | Dispensing cooled beverage |
| GB2529222A (en) * | 2014-08-14 | 2016-02-17 | Heineken Uk Ltd | Beverage dispense systems |
| GB2529222B (en) * | 2014-08-14 | 2021-06-30 | Heineken Uk Ltd | Beverage dispense systems |
Also Published As
| Publication number | Publication date |
|---|---|
| GB8709177D0 (en) | 1987-05-20 |
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