Claims
- 1. A beverage dispensing system comprising valve means controlling dispensing of the beverage through a supply passage which is intended to be connected to a bulk source of the beverage, and gasifying means for introducing at least one of nitrogen, carbon dioxide, and air gases into said beverage in the supply passage remote from the bulk source and during dispensing of the beverage, said gasifying means having an inlet for connection to a source of the gas under pressure; a capillary restrictor through which said gas is to be directed to the supply passage, said restrictor having a bore in the range of 0.05 to 0.4 millimeters diameter and a length in the range of approximately 25 to 1,000 millimeters, means for adjusting the pressure of the gas supplied to the capillary restrictor, and a non-return valve through which gas emanating from the restrictor is introduced to the beverage.
- 2. A system as claimed in claim 1 in which the supply passage downstream of the position at which the gas is introduced has means for subjecting the beverage to turbulence to promote the rate at which the introduced gas is absorbed by the beverage.
- 3. A system as claimed in claim 2 in which the means for subjecting the beverage to turbulence comprises a labyrinthine mixer in the supply passage.
- 4. A system as claimed in claim 1 in which the supply passage has small apertures or restrictors through which the beverage is dispensed downstream of the position at which the gas is introduced, said apertures or restrictors assisting in the liberation of the dissolved gas from the beverage for the formation of a head or froth.
- 5. A system as claimed in claim 1 in which the gasifying means is located to introduce the gas at a position in the supply passage upstream of the valve means.
- 6. A system as claimed in claim 1 in which the supply passage communicates with a bulk source of the beverage in a rigid container.
- 7. A system as claimed in claim 6 in which the beverage in the container has carbon dioxide dissolved therein.
- 8. A system as claimed in claim 7 in which the container communicates with a source of carbon dioxide under pressure which maintains carbon dioxide at a predetermined pressure in the headspace of that container.
- 9. A system as claimed in claim 1 in which a pump is provided for supplying the beverage through the supply passage on demand.
- 10. A system as claimed in claim 9 in which an air compressor is provided from which air under pressure is supplied on demand to the beverage.
- 11. A system as claimed in claim 10 in which the pump and air compressor are driven simultaneously from a common motor which motor is actuated when demanded for dispensing of the beverage.
- 12. A system as claimed in claim 9 in which the pump and air compressor are driven simultaneously from a common motor which motor is actuated when demanded for dispensing of the beverage.
- 13. A system as claimed in claim 1 in which the capillary restrictor is of tubular form one end of which tube communicates with said inlet and the other end of which is in sealed communication with the non-return valve.
- 14. A system as claimed in claim 1 in which a filter is provided through which the gas flows to the capillary restrictor.
- 15. A system as claimed in claim 1 in which the nonreturn valve comprises a resilient diaphragm which normally closes an aperture through which the gas is introduced in the beverage and which diaphragm is displaced under the pressure of such gas to open said aperture and admit the gas to the beverage during dispensing.
- 16. A system as claimed in claim 15 in which the nonreturn valve comprises a hollow member into which the gas is directed from the capillary restrictor, said hollow member having a port through which the gas is to flow from the interior thereof into the beverage, and wherein the resilient diaphragm is of sleeve form mounted on the hollow member to normally close said port.
- 17. A system as claimed in claim 1 in which the capillary restrictor and non-return valve are carried in a housing to be readily removable from the system for servicing or replacement.
- 18. A system as claimed in claim 1 and comprising a bulk source of fermented beverage selected from beer, lager, stout, wine and cider.
- 19. A system as claimed in claim 1 in which the beverage in the container has carbon dioxide dissolved therein.
Priority Claims (1)
Number |
Date |
Country |
Kind |
8506227 |
Mar 1985 |
GBX |
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Parent Case Info
This application is a continuation of Ser. No. 314,235, filed on Feb. 21, 1989, in turn a continuation of Ser. No. 120,230, filed on Nov. 10, 1987, in turn a continuation of Ser. No. 838,625, filed on Mar. 11, 1986 all now abandoned.
US Referenced Citations (8)
Foreign Referenced Citations (1)
Number |
Date |
Country |
1063753 |
Mar 1967 |
GBX |
Continuations (3)
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Number |
Date |
Country |
Parent |
314235 |
Feb 1989 |
|
Parent |
120230 |
Nov 1987 |
|
Parent |
838625 |
Mar 1986 |
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