Field of the Invention
My invention is in the field of cold drink merchandisers and, more particularly, in the field of nozzle assemblies for cold drink merchandisers.
Background of the Invention
There are known in the prior art, merchandising machines which are adapted to deliver cold drinks in response to the deposit therein of a sum of money. In general, such machines are designed to deliver a variety of beverages of different flavors which may be either still or carbonated water and which may be dispensed with or without ice. In one type of beverage dispensing machine, the flavoring constituent and the water constituent are mixed directly in the cup in which the beverage is delivered to the customer and the ice, if any, is delivered to the cup at some point in the operating cycle of the machine.
In machines of the type described above, a plurality of nozzles leading from the respective syrup supplies and a water outlet member are assembled at a location above the cup delivery station and are so oriented as to deliver the syrup and water into the cup. In addition, an ice delivery chute is supported so as to direct ice from the icemaker storage bin to the cup. To insure an adequate mixing, each nozzle is positioned so that its stream of flavored syrup intersects with the common water stream at a prescribed angle and location relative to the cup.
In most nozzle holders of the prior art, the individual nozzles are formed of metal and soldered into position on a metal bracket. While these nozzle holders assure accurate positioning of the nozzles for intersection of the syrup stream with the water stream, if the initial assembly operation is properly done, later adjustment is not possible. Moreover, the individual nozzles cannot be readily removed for cleaning or replacement. In addition, this arrangement prevents the quick replacement of an individual nozzle with one having a larger internal diameter for use with a heavier syrup.
Selvia et al. U.S. Pat. No. 3,986,642 issued Oct. 19, 1976, discloses an alternate form of nozzle and holder assembly in which blocks clamped together form ball and socket supports with elements on the nozzles adjustably to support the nozzles. The arrangement permits the removal and replacement of the individual nozzles by unclamping the blocks. However, as the nozzles must be repositioned by hand each time they are removed, this arrangement does not automatically ensure accurate positioning of the nozzles for intersection of the syrup stream with the water stream as the nozzles are replaced.
Objects of the Invention
One object of my invention is to provide a nozzle assembly for a cold drink merchandiser which overcomes the defects of assemblies of the prior art.
Another object of my invention is to provide a nozzle assembly comprising a holder which is formed from easily molded parts and which is relatively inexpensive in construction.
Still another object of my invention is to provide a nozzle assembly for a cold drink merchandiser in which the nozzles may be easily removed and replaced.
A further object of my invention is to provide a nozzle assembly for a cold drink merchandiser in which each nozzle is accurately automatically positioned to direct its stream of syrup at a desired angle relative to a common stream of water as the nozzle is assembled on the holder.
A still further object of my invention is to provide a nozzle holder which supports and properly positions an ice chute.
Other and further objects of my invention will appear from the following description.
Brief Description of the Drawings
In the accompanying drawings which form part of the instant specification and which are to be read in conjunction therewith and in which like reference numerals are used to indicate like parts in the various views:
FIG. 1 is a front elevation of a cold drink machine with parts broken away provided with my nozzle assembly.
FIG. 2 is a partially exploded plan view of my nozzle assembly for a cold drink merchandiser.
FIG. 3 is a partially exploded sectional view of my nozzle assembly for a cold drink merchandiser taken along the lines 3--3 of FIG. 2, showing its relationship to a cup to which a drink is to be delivered.
FIG. 4 is an elevation of my nozzle assembly for a cold drink merchandiser taken along the lines 4--4 of FIG. 2, with parts removed and showings its relationship to a cup to which a drink is to be delivered.
Description of the Preferred Embodiment
Referring now to FIG. 1 of the drawings, a cold drink merchandiser 56 with which my nozzle assembly, indicated generally by the reference character 10, is adapted to be used, is provided with a cup delivery mechanism (not shown) of any suitable type known to the art for delivering a cup 58 to a location accessible to the customer at which the drink is dispensed. The machine 56 includes a plurality of respective syrup pumps 32 adapted to be actuated in a manner known to the art to deliver charges of syrup through lines 28 to the assembly 10. An ice maker 52 is adapted to be actuated to deliver a charge of ice through a tube 50 to a chute 48 supported on the assembly 10 in a manner to be described more fully hereinbelow. Further, as will be described, the assembly 10 is adapted to receive a charge of still or carbonated water from sources (not shown) in the course of a cycle of operation of machine 56.
Referring now to FIGS. 2 to 4 of the drawings, my nozzle assembly indicated generally by the reference character 10, includes a hollow inverted frustro-conical body 12, indicated generally by the reference character 12, having a base 14, a sidewall 18 and a rim 16. I form the inner surface of the wall 18 with a plurality of grooves 20 of generally hemicylindrical cross section extending from rim 16 along the sidewall 18 to a respective oval shaped opening 22 in the base 14. Each groove 20 receives a cylindrical nozzle 24 having a truncated conical head 26 for receiving one end of a hose 28, and a collar or flange 30 which limits the movement of the nozzle along the groove to a position at which a predetermined part of the lower end extends through the corresponding respective oval shaped opening 22 in the base 14. It will readily be appreciated that the inner diameter of the nozzle used is determined by the viscosity of the syrup with which it is associated. That is, nozzles having a larger internal diameter may be used for heavier syrups.
The nozzles 24 are releaseably held in their respective recesses 20 by generally rectangular metal clamps 34, each having an internally threaded opening to receive a screw 36. Screws 36 extend through slots 38 formed in sidewall 18, with the heads of the screws bearing against the outer surface of the sidewall. By loosening the screws 36, the nozzles 24 can be easily removed from and re-inserted into respective grooves 20 for cleaning or replacement.
I form the body 12 with a centrally located hollow generally cylindrical guide 40 having an internal bore extending through the base 14. The bore of the guide 40 is adapted to receive the lower cylindrical end of a water supply pipe 42 formed with a shoulder 44 adapted to engage the upper end of guide 40 when the pipe is in position. I connect the upper end of pipe 42 to a line which is supplied with the principal constituent of the beverage in a manner known to the art.
As is known in the art, in operation of the drink machine 56, when a selection is made, the pipe 42 will direct a stream of either carbonated or still water into a cup 58. In accordance with the flavor selected, one of the syrup pumps 32 will pump a measured quantity of syrup through the respective tube 28 to the respective nozzle 24. The nozzle 24 will direct a stream of the syrup towards the water stream.
I so form the nozzle assembly 10 that the syrup stream from each nozzle 24 is directed towards the water stream at the same angle .theta.. In addition, as the end of each nozzle 24 is located the same fixed distance from the end of the pipe 42, as determined by flange 30, the point of intersection of each syrup stream with the water stream is at the same point A.
It is desirable to position the nozzle holder 10 in the drink machine 56 so that the point of intersection of the water stream with any syrup stream is above the cup 58, thus assuring an adequate mixture of syrup and water. To this end, the body 12 carries bosses 54, which are received in a suitable bracket (not shown) located within the drink machine 56. The bosses 54 and bracket support and accurately position the nozzle holder 10 within the drink machine 56, so that the point A is above the cup 58.
I form my nozzle holder 10 with a rectangular frame 46 for supporting an ice chute 48, which may be connected by a pipe 50 to the reservoir of icemaker 52. When activated, the machine 52 drops a measured quantity of crushed ice into the pipe 50, the chute 48 directs the ice into the cup 58.
I form the body 12 and the nozzles 24 from any suitable plastic material, such for example as Lexan, which is the registered trademark of General Electric Company for a thermoplastic polycarbonate resin.
It will be seen that I have accomplished the objects of my invention. I have provided a nozzle holder which accurately positions each nozzle for intersection of its syrup stream with a common water stream at a prescribed angle and location. My nozzle holder permits the easy removal and replacement of nozzles and supports an ice chute. My nozzle holder is formed from easily molded parts and is readily disassembled for cleaning. It is relatively simple and inexpensive for the result achieved thereby.
It will be understood that certain features and subcombinations are of utility and may be employed without reference to other features and subcombinations. This is contemplated by and is within the scope of our claims. It is further obvious that various changes may be made in details within the scope of our claims without departing from the spirit of our invention. It is, therefore, to be understood that our invention is not to be limited to the specific details shown and described.