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| Solenoids in Beverage Dispensing Machines |
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Growth in the beverage dispensing industry is projected to be caused by increased consumption of non-carbonated beverages. As a result, the dispensing industry needs to develop new vending machines to dispense these different types of drinks. The bottle dispensers need, for example, to be equipped to dispense iced tea, juice and sports drink bottles rather than only colas. These drink bottles must slide down to the buyer, rather than be dropped, as happens with a soda can.
A new vending machine uses 9 solenoids per slide. Each solenoid controls a stack of beverage bottles of one flavor of drink. The machine can therefore offer up to 54 different beverages. An overmolded D-Frame solenoid is used to push or release a beverage bottle from the slide containing the row of bottles. The overmolding around the coil prevents any problems from developing in the solenoid caused by condensation in this refrigerated beverage vending machine. The solenoid mechanism works such that it releases the first bottle in the stack and as it does so, it then blocks the rest of the stack from following the first bottle down the slide. The solenoid operates at 10% duty, at 22-26 VDC and has to meet a life expectancy of 1 million actuations.
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