| CPC B08B 9/0325 (2013.01) [B08B 3/102 (2013.01); B08B 9/0321 (2013.01); B08B 9/0328 (2013.01); B67D 1/07 (2013.01); A23G 9/00 (2013.01); A23G 9/28 (2013.01); A23G 9/30 (2013.01); B08B 2203/007 (2013.01); B67D 2001/075 (2013.01)] | 6 Claims |

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1. A self-cleaning frozen food product dispenser comprising:
a main dispenser body;
an ingredient hopper positioned within the dispenser body, the ingredient hopper defining an upper opening through which an ingredient can be poured into the hopper;
a hopper lid coupled to the main dispenser body through a hinge assembly such that the hopper lid can be moved between an open position permitting the pouring of an ingredient into the ingredient hopper and a closed position in which the hopper lid is positioned over the hopper opening;
a sprayer coupled to the hopper lid such that the sprayer can spray fluid into the hopper, the sprayer having a sprayer inlet;
a latch mechanism for latching the hopper lid to the main dispenser body when the hopper lid is in the closed position, the latch mechanism including a latch and a latch sensor adapted to provide an indication when the hopper lid is in the closed position;
a freezing chamber in fluid communication with the ingredient hopper;
a beater bar positioned within the freezing chamber;
a bi-directional motor coupled to the beater bar and adapted to cause rotation of the beater bar when activated;
a faceplate, the faceplate defining a discharge nozzle;
a dispense valve that can be actuated to dispense material from the freezing chamber through the discharge nozzle;
a cleaning connector, the cleaning connector including an inlet and an outlet, the inlet to the cleaning connector being removably couplable to the discharge nozzle, wherein the cleaning connector includes a cleaning connector sensor that is activated and provides a second indication when the cleaning connector is positioned relative to the faceplate for a cleaning operation;
a pump having a pump inlet and a pump outlet, the pump inlet being fluidly coupled to a source of cleaning solution, and the pump outlet being fluidly coupled to the sprayer inlet;
a controller including control inputs coupled to receive the indication from the latch sensor and the second indication from the cleaning connector sensor, and further controls outputs coupled to control operation of the bi-directional motor, the dispense valve, and the pump, the controller being configured to:
(a) display an error message if:
the cleaning connector sensor does not indicate that the cleaning connector is attached to the faceplate for a cleaning operation;
and
(b) enable the performance of a cleaning operation wherein, during at least portions of the cleaning operation,
the pump is activated to pump cleaning fluid to the sprayer inlet;
the motor is activated to drive the beater bar in a clockwise direction; and
the dispense valve is cycled between an actuated and a non-actuated state.
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