Abstract: A chilling system is provided for chilling or cooling a supply of water or the like to a selected low temperature suitable for drinking and other uses. The chilling system includes a thermoelectric heat transfer module having a cold side for extracting heat energy from water contained in a reservoir, and a hot side for transferring the extracted heat energy to a circulating heat transfer fluid. In particular, the hot side of the module is in thermal communication with a manifold block through which a heat transfer fluid such as water is circulated by a pump. The pump circulates the heat transfer fluid through a heat exchanger for dissipating the extracted heat energy. In addition, the same pump drives an impeller within the reservoir to maintain the reservoir contents at a substantially uniform temperature level, and further may drive a cooling fan for providing a convective air flow across the heat exchanger.

Abstract: An improved water carbonator system is provided for thoroughly mixing a carbonating gas with a water supply flowing through a refrigerated reservoir of the type used in soft drink dispenser stations and the like. The carbonator system includes water and gas injector nozzles disposed generally at an upper end of the reservoir, together with a dispense valve for drawing carbonated chilled water from a lower end of the reservoir. A vertically elongated and rotatably driven impeller shaft carries a spaced plurality of vaneless impeller disks for causing the water flowing downwardly through the reservoir to undergo a plurality of directional changes in a radially outward direction. Such directional changes in flow result in improved intermixing with the carbonating gas and improved chilling of the water prior to dispensing. A drive motor has a drive shaft connected in common to a pump for delivering water into the reservoir, and to the impeller shaft.

Abstract: An improved water carbonator system is provided for thoroughly mixing a carbonating gas with a water supply flowing through a refrigerated reservoir of the type used in soft drink dispenser stations and the like. The carbonator system includes water and gas injector nozzles disposed generally at an upper end of the reservoir, together with a dispense valve for drawing carbonated chilled water from a lower end of the reservoir. A vertically elongated and rotatably driven impeller shaft carries a spaced plurality of vaneless impeller disks for causing the water flowing downwardly through the reservoir to undergo a plurality of directional changes in a radially outward direction. Such directional changes in flow result in improved intermixing with the carbonating gas and improved chilling of the water prior to dispensing.