Abstract: An ice-making machine having an ice-forming surface upon which ice is formed, a refrigeration system including a microchannel evaporator that cools the ice-forming surface, and a water-supply system. The microchannel evaporator includes a microchannel tube that facilitates a distributed cooling effect in a contact area between the microchannel tube and the ice-forming surface. In some embodiments, the microchannel tube includes a series of recessed portions that define insulated regions and divide the tube into non-insulated regions. The insulated and non-insulated regions can be dimensioned to form individual ice cubes on the ice-forming surface. In other embodiments, spaces between microchannel tubes and/or spaces between the ice-forming surface and microchannel tubes can form insulated regions at least partially defining the size and shape of ice produced by the ice-making machine.

Abstract: An ice forming apparatus capable of forming ice pieces is provided, including, a transfer zone between the ice forming apparatus and a storage area, and an ice sensing apparatus configured to both detect migration of the ice pieces through the transfer zone and to detect build-up of the ice pieces in the transfer zone. The ice forming apparatus is preferably an auger-type device, such as a flaker-type or a nugget-type device.

Abstract: An ice machine includes an evaporator with a plurality of individual ice-forming cells. Each ice-forming cell is open at a lower end. A water distributor is coupled to the evaporator and configured to deliver water to the upper end of each ice-forming cell. A refrigeration system in the ice machine is configured to cool each of the plurality of ice-forming cells, such that individual ice cubes are formed in each ice-forming cell. A water recirculation system includes a water collection unit positioned between the evaporator and a water sump. The water collection unit collects water flowing from the ice-forming cells in first and second chambers. A water detection probe is positioned in the second chamber. A harvest cycle is initiated when the water level in the second chamber falls below a specified level. A method of operating the ice machine is also provided.