BACKGROUND OF THE INVENTION

The present invention generally relates to portable beverage dispensers. More particularly, the present invention relates to improved means for cooling bottled beverages in a portable dispenser.

Portable dispensers for water, soda and like beverages are widely known in the prior art. Beverage cooling in the dispensers of the prior art has generally been accomplished by cooling a tank or container housing the beverage. In U.S. Pat. No. 3,149,471 to Boehmer et al. a water cooler is disclosed wherein water disposed in a container is chilled by a thermoelectric assembly. In U.S. Pat. No. 3,310,953 to Rait a portable casing having a thermoelectric cooling assembly attached thereto is provided for receipt of a container of beverage for conductive cooling. A portable dispenser for pressurized kegs of beer and the like is disclosed in U.S. Pat. No. 3,354,668 to Cserny wherein a thermoelectric refrigeration unit is provided to cool the interior of a cabinet housing the keg of beer. U.S. Pat. No. 4,823,554 to Trachtenberg et al. discloses a thermoelectric heating and cooling apparatus which selectively raises or lowers the temperature of a conductive plate whereupon food or beverage items are placed.

A particular shortcoming of the aforementioned beverage dispensers of the prior art is the provision of only a single heat transfer wall for removal of heat. Such construction necessitates a longer cooling period to chill a quantity of beverage. It is well known as a basic principle of thermodynamics that the rate of heat transfer is directly proportional to the surface area of the conducting wall. Thus, more efficient cooling can be accomplished by increasing the thermoconductive surface area. In U.S. Pat. No. 3,312,083 to Scoggins et al. a portable home soda fountain is disclosed wherein a cooling coil is wrapped around a beverage tank thereby increasing the conductive surface area. In U.S. Pat. No. 3,468,370 to Castillo a bottled water cooler is disclosed which includes baffling means to direct fluid to the cooling means. While these improvements in cooling means for beverage dispensers enhance cooling efficiency, they do not provide a simple construction for this purpose as disclosed in the present invention.

SUMMARY OF THE INVENTION

The present invention provides a thermoelectrically-cooled beverage dispenser having a cooling chamber formed with honeycombed beverage passageways, such construction providing a larger conductive surface area per volume of beverage. The beverage dispenser includes an orifice and recessed chamber in its top wall for receipt of a bottled beverage.

An object of the present invention is to provide an apparatus for dispensing and cooling beverages.

Another object of this invention is to provide a beverage dispenser adaptable for receipt of bottled beverages.

It is also an object of the present invention to provide a beverage dispenser having more efficient cooling means.

These and other objects and advantages of the present invention will be apparent to those skilled in the art from the following description of a preferred embodiment, claims, and accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a front perspective view of the present invention.

FIG. 2 is a rear perspective view of the present invention.

FIG. 3 is a plan cross-sectional view taken along line A--A in FIG. 2.

FIG. 4 is a plan cross-sectional view taken along line B--B in FIG. 3.

DESCRIPTION OF A PREFERRED EMBODIMENT

FIG. 1 illustrates in a front perspective view the beverage dispensing and cooling apparatus 10 of the present invention. The beverage dispenser 10 generally comprises a quadrilateral housing 11 having a selectively operable spigot 40 disposed in the lower portion of the front wall 13 of said housing 11. A beverage container orifice 14 is formed in the top wall 15 of said housing 11 for receipt of the top portion of a bottled beverage 1, shown in phantom line in the several figures, which communicates with the cooling assembly 100 of said dispenser 10 (FIG. 3) as hereinafter described in greater detail. As can be seen in FIG. 2, beverage dispenser 10 further includes a fan vent 16 formed in the rear wall 17 of said housing 11 and an electrical cord outlet 18 likewise formed in the rear wall 17 for passage of the electrical source attachment 105.

Referring now to FIG. 3 it can be seen that the beverage container orifice 14 communicates with a recessed chamber 19 formed in the top portion of the dispenser housing 11. A screw cap 20 is disposed adjacent to the bottom wall 19a of said recessed chamber 19, said screw cap 20 being threadedly attachable to the end of said bottled beverage 1. Screw cap 20 includes a opening 21 formed in its bottom wall in vertical alignment with a chamber opening 19b through which a flexible tubing 30 extends in snug engagement. One end of said flexible tubing 30 extends into the end of said bottled beverage 1 and the opposite end of said tubing 30 extends to the cooling chamber 101 of said cooling assembly 100.

Cooling assembly 100 includes a cooling chamber 101, preferably formed from a highly thermoconductive material, for example, aluminum, a thermoelectric module 102 disposed adjacent to a wall of said cooling chamber 101 in heat exchange relationship, a heat sink 103 attached to the opposite side of said thermoelectric module 102 and a heat fan 104 disposed adjacent to the heat sink 103 and attached to the heat vent 16 of said dispenser housing 11. Cooling chamber 101 has a fluid baffling compartment 101a formed at the top of chamber 101 which communicates with honeycombed tubular passageways 101b which vertically extend to a fluid dispensing compartment 101c formed at the bottom of chamber 101. The thermoelectric module 102 of said cooling assembly 100 includes appropriately attached lead wires 105 to induce the charge flow across said module 102 for thermoelectric operation. As can be seen in FIG. 4 the heat sink 103 includes a base element 103a and a plurality of fins 103b extending therefrom.

To utilize the beverage dispenser 10 of the present invention, the screw cap 20 is threadedly attached to the top end of an open bottled beverage 1, for example a liter of bottled water, and the beverage 1 is then inverted through the orifice 14 of the dispenser housing 11 into the recessed chamber 19. Gravity flow of the beverage through the flexible tubing 30 fills the cooling chamber 101. The beverage 1 trapped in the honeycombed passageways 101b of the cooling chamber 101 is then cooled by operation of the thermoelectric module 102, the heat transmitted to the heat sink 103 being vented by the heat fan 104. The thin walls 101d of the cooling chamber 101 which surround the passageways 101b provide a greater surface area per volume of beverage 1 and thereby permit more efficient cooling of the beverage 1 enclosed therein. The cooled beverage 1 is then selectively dispensed from the dispensing compartment 101c of the cooling chamber 101 via the spigot 40.