Motorless batch carbonator
US4950431A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 1989 |
| Grant date | Aug 21, 1990 |
| Priority date | — |
| Expiry date | Jun 28, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S261/07
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A motorless batch carbonator for a carbonated drink dispenser is located in a chilled water bath including a set of evaporator coils located on the outside of the water bath with the ice build up on the inside thereof being controlled by an ice bank detector. The carbonator is comprised of an immersible closed tank including a semi-permeable membrane carbonating section where still water and CO.sup.2 gas are mixed together. Still water from a pressurized source is fed into the interior of the carbonator tank which is pressurized to operate a spring-biased spool valve for opening and closing a CO.sup.2 supply line. A vent passage through the top of the carbonator chamber is opened and closed to atmospheric pressure in response to the manual actuation of a spring-biased dispensing plunger which includes a fluid dispensing path. A constrained spherical float device resides on the surface of the carbonated water inside of the tank and to open and close the vent passage and thus control tank pressurization and operation of the spool valve controlling the supply of CO.sup.2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.