Refrigeration – Withdrawable liquid – e.g. – dispenser – With intermediate indirect heat transfer fluid container or...
Patent
1989-12-28
1992-03-10
Tapolcai, William E.
Refrigeration
Withdrawable liquid, e.g., dispenser
With intermediate indirect heat transfer fluid container or...
62436, 165164, B67D 562
Patent
active
050940880
DESCRIPTION:
BRIEF SUMMARY
FIELD OF INVENTION
This invention relates to beverage storage and cooling systems, and more particularly to a means for maintaining drinking liquid at a constant temperature during passage of such liquid through commerical beverage delivery lines.
This invention finds preferred application in beverage storage and cooling systems commonly employed in Hotels, Clubs and Restaurants.
Background Art
Conventionally, whenever refrigerated drinking liquid is fed through delivery lines to a dispense point of a bar of a Hotel, Club or Restaurant, the drinking liquid delivery lines are run in close proximity to coolant lines arranged randomly with the drinking liquid delivery lines. The coolant lines circulate liquid coolant at a temperature sufficient to maintain the temperature of the drinking liquid flowing in the delivery lines at roughly the required temperature. The combined drinking liquid delivery and coolant lines are housed loosely within thick insulator tubing and the product in toto is described in the trade as a python. In most instances however, the contribution of these pythons to maintaining the drinking liquid at the required temperature has had to be supplemented by instantaneous bar coolers which take up valuable bar space and often appear unsightly. Furthermore, the loose configuration of lines of the python facilitates the growth of micro-organisms, and particularly yeast, on the outer surface of these lines. The random arrangement of drinking liquid delivery lines and coolant lines within the insulator tubing leads to low efficiency of cooling of the drinking liquid in the delivery lines.
Clearly, the coolant lines need to be positioned within the insulator tubing so as to maximize the cooling effect of the coolant tubes without waste of space and energy. The desired arrangement of lines should improve thermal efficiency of the beverage storage and cooling system generally, and so eliminate the need for instantaneous bar coolers.
It is an object of the present invention to provide an improved python which will substantially overcome or ameliorate the abovementioned disadvantages of the prior art.
It is a further object of the present invention to provide a python which will maintain the drinking liquid flowing in lines therein at a predetermined temperature.
DISCLOSURE OF THE INVENTION
According to the invention there is provided a python for maintaining the drinking liquid flowing in lines therein at a predetermined temperature, said python comprising: liquid delivery line, said coolant line adapted to carry coolant, and said coolant line so as to restrict the free movement of the said lines, line and the abovementioned configuration of the drinking liquid delivery line, coolant line, and insulator tubing is such as to maintain the drinking liquid in the said drinking liquid delivery line at a predetermined temperature.
When the python is to be used for transferring and cooling a large quantity of drinking liquid, as may be required of a beer line linking an ice bank tank to the service bar, the drinking liquid delivery line comprises a central drinking liquid tube and secondary drinking liquid tubes positioned so as to be in mutual contact about and in contact with the circumference of the central drinking liquid tube.
The coolant line may consist of a single tube whose circumference surrounds the drinking liquid delivery line, or it may consist of a plurality of tubes positioned so as to be in mutual contact about and in thermal contact with the drinking liquid delivery line.
When the python is to be used for transferring and cooling a small quantity of drinking liquid, as may be required of a beer riser lead linking the service bar python to the dispensing taps, the drinking liquid delivery line comprises a single drinking liquid tube.
Where a plurality of drinking liquid tubes in the python is required, the circumference of each of the drinking liquid tubes is preferably identical, and can be made of nylon, EVA or stainless steel. Where the python consists of a plurality of coolant t
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patent: 3269422 (1966-08-01), Matthews et al.
patent: 3681936 (1972-08-01), Park
patent: 4194536 (1980-03-01), Stine et al.
patent: 4523637 (1985-06-01), Abramo
patent: 4676400 (1987-06-01), Lamont et al.
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