Refrigeration – Withdrawable liquid – e.g. – dispenser – With intermediate indirect heat transfer fluid container or...
Patent
1998-10-21
2000-12-26
Bennett, Henry
Refrigeration
Withdrawable liquid, e.g., dispenser
With intermediate indirect heat transfer fluid container or...
62201, 62389, 2221466, B67D 562
Patent
active
061640832
DESCRIPTION:
BRIEF SUMMARY
This invention relates to liquid temperature regulating apparatus, and more particularly to a liquid temperature regulating apparatus and method suitable for use in beverage dispensing devices whereby potable liquids are dispensed at pre-determined temperatures.
In the beverage dispensing industry, when beverages are not dispensed directly from the container, a system of pipe work or tubing is used to transfer the product from its bulk storage area to a convenient point of service. Such dispense tubes, pipes or lines are used today extensively for the serving of beers, ciders, soft drinks and other beverages in public houses, bars and other licensed premises.
The pipework or tubing was originally formed from, for example, a variety of metals, rubber, glass and ceramics materials. With the advent of modern hygienic flexible plastics tubing and pipework, the installation of the pipework or tubing has become simplified.
Customer demand over recent years has led to the development of various methods of cooling the products to suit various tastes and climatic conditions. Wherever possible, bulk potable liquids are stored at near ideal drinking temperatures, but problems still arise during the movement of the potable liquids from a cool storage area to a dispensing point, because of undesirable temperature rises of the liquid in the dispense tube, pipe or line.
In the prior art, two methods of dealing with this problem have been adopted: to the point of dispense. As the beverage is drawn off through, for example, a tap or faucet, it is introduced into a metal tubular coil immersed in a bath of refrigerated liquid. It is, however, difficult to maintain a constant temperature, because, should the beverage remain in the coil for long periods, it will be below the recommended temperature, and on rapid constant delivery, the coil has difficulty in liberating sufficient heat from the beverage. A further undesirable feature of the flash cooler is that the refrigerator apparatus gives off copious amounts of heat in and around the servery which is uncomfortable for the staff of the premises in certain climatic conditions. the cool storage area to close to the point of dispense is used. The python device consists of several product delivery tubes or pipes encapsulated together with two larger diameter flexible tubes, one for flow and the other for return, the whole being wrapped with an insulating material to prevent heat ingress. The flow and return tubes constantly circulate a coolant fluid, usually water, from a remotely mounted refrigerated cooler. Although temperature control is more readily maintained in comparison with the flash cooling method, after a time, even those product lines furthest away from the flow and return tubes become too cold, rendering cask conditioned beers flat, leading to unattractive presentation, loss of vital flavours and lack of detection of high temperature vaporising odours. The recently introduced range of "ice" beers, which are served at very low temperatures, compounds the problem even further. In addition, the inflexibility, size and bulk of the python lines make their installation difficult and time consuming. The python system, containing as it usually does, a variety of product lines that ideally should be served at differing temperatures, has the further disadvantage that, the correct dispense temperature of various and varying beverages cannot always be maintained to the manufacturer's preferred recommended temperature. carbonated water is circulated by a pump around a ring main in which is disposed a refrigeration unit so that the water in the ring main is cooled and kept at a constant temperature. The ring main can have a number of dispensing taps off it. However, the refrigeration unit must be capable of coping with peak demand from the dispensing taps and hence must be a substantial unit.
It will be appreciated that there is a need for an improved apparatus and method for controlling and monitoring the temperature of beverages within dispense tubes, pipes or lines.
In accorda
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Brown Brian John Colin
Leeming Douglas Richard
Bennett Henry
Eventemp Limited
Norman Marc
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