| 主权项 |
1. An ice maker comprising:
an upper tray comprising a plurality of first recessed parts, each of the first recessed parts having a hemispherical shape; a lower tray rotatably coupled to the upper tray and comprising a plurality of second recessed parts, each of the second recessed parts having a hemispherical shape; a driving unit that is connected to the lower tray and that is configured to rotate the lower tray to change between an attached orientation in which the first recessed parts of the upper tray are attached to the second recessed parts of the lower tray to define a plurality of spherical shells and a separated orientation in which the first recessed parts of the upper tray are separated from the second recessed parts of the lower tray; a water supply part configured to supply water into the shells defined in the attached orientation; and an ejecting unit that is disposed outside of the shells and that is configured to facilitate separation of ice pieces made in the shells from at least one of the upper tray and the lower tray, wherein a top surface of at least one of the first recessed parts has an air hole configured to exhaust air existing within the shells during supply of water to the shells, wherein a top surface of at least one of the first recessed parts has a water hole that is different from the air hole, wherein an outlet end of the water supply part is disposed adjacent to the water hole and configured to supply water into the shells through the water hole, wherein the ice maker further comprises:
at least one lower protrusion that upwardly protrudes from a top surface of the lower tray along an edge of an open surface of each of the second recessed parts;at least one upper protrusion that downwardly protrudes from a bottom surface of the upper tray along an edge of an open surface of each of the first recessed parts, and wherein, in the attached orientation, an outer surface of the at least one lower protrusion attaches to an inner surface of the at least one upper protrusion. |
