In a refrigerator, a cam of a cam gear rotating by a driving motor is provided with a structure protruding from an edge portion of a cam gear to a center, thereby increasing the thickness of a cam surface. Therefore, it is possible to reduce the magnitude of force directly transferred from the cam gear to a magnet lever.

In a refrigerator, a cam of a cam gear rotating by a driving motor is provided with a structure protruding from an edge portion of a cam gear to a center, thereby increasing the thickness of a cam surface. Therefore, it is possible to reduce the magnitude of force directly transferred from the cam gear to a magnet lever.

A refrigerator and method utilize a door-mounted icemaking system including an icemaking mold, an ice storage bin and a cold wall evaporator disposed proximate the ice storage bin along an interior wall of the door to provide cooling proximate the ice storage bin. In some instances, the cold wall evaporator may be in addition to an icemaking evaporator that provides direct cooling of the icemaking mold, and furthermore, in some instances, the cold wall and icemaking evaporators may be separately controllable to optimize cooling within the door-mounted icemaking system. In addition, in some instances, a hot wall condenser may be used in a door-mounted icemaking system to dissipate heat generated by a refrigeration circuit through an exterior wall of a door. Further, in some instances a reversible refrigeration circuit may be used in connection with an icemaking evaporator to assist in ejecting ice from an icemaking mold.

A refrigerator and method utilize a door-mounted icemaking system including an icemaking mold, an ice storage bin and a cold wall evaporator disposed proximate the ice storage bin along an interior wall of the door to provide cooling proximate the ice storage bin. In some instances, the cold wall evaporator may be in addition to an icemaking evaporator that provides direct cooling of the icemaking mold, and furthermore, in some instances, the cold wall and icemaking evaporators may be separately controllable to optimize cooling within the door-mounted icemaking system. In addition, in some instances, a hot wall condenser may be used in a door-mounted icemaking system to dissipate heat generated by a refrigeration circuit through an exterior wall of a door. Further, in some instances a reversible refrigeration circuit may be used in connection with an icemaking evaporator to assist in ejecting ice from an icemaking mold.

An ice maker includes: an upper assembly comprising a plurality of upper chambers recessed upward to define an upper portion of an ice chamber in which water is filled and ice is made, and having an intake opening by being open on a top, and a vertical extension part formed to protrude upward around the intake opening; a lower assembly comprising a plurality of lower chambers recessed downward to define a lower portion of the ice chamber, and rotatably connected to the upper assembly; and a water supply part that is recessed downward from an upper side of the water supply part and configured to receive therein water for making ice, the water supply part being removably coupled to the vertical extension part and configured to guide the received water into the intake opening.

An ice maker includes: an upper assembly comprising a plurality of upper chambers recessed upward to define an upper portion of an ice chamber in which water is filled and ice is made, and having an intake opening by being open on a top, and a vertical extension part formed to protrude upward around the intake opening; a lower assembly comprising a plurality of lower chambers recessed downward to define a lower portion of the ice chamber, and rotatably connected to the upper assembly; and a water supply part that is recessed downward from an upper side of the water supply part and configured to receive therein water for making ice, the water supply part being removably coupled to the vertical extension part and configured to guide the received water into the intake opening.

A refrigerator appliance may include a cabinet, a liner, a sealed system, a conductive ice mold, a thermoelectric heat exchanger, and a water dispenser. The liner may be attached to the cabinet and define an icebox (TB) compartment. The sealed system may include a compressor to motivate refrigerant through the sealed system, and an evaporator disposed along an air path in fluid communication with the compressor to exchange refrigerant therewith. The conductive ice mold may be mounted within the IB compartment. The conductive ice mold may define a mold cavity along the air path to receive a chilled airflow from the evaporator. The thermoelectric heat exchanger (TEHE) may be disposed on the conductive ice mold to draw heat therefrom. The water dispenser may be positioned below the ice mold to direct an ice-building spray of water to the mold cavity.

A refrigerator appliance may include a cabinet, a liner, a sealed system, a conductive ice mold, a thermoelectric heat exchanger, and a water dispenser. The liner may be attached to the cabinet and define an icebox (TB) compartment. The sealed system may include a compressor to motivate refrigerant through the sealed system, and an evaporator disposed along an air path in fluid communication with the compressor to exchange refrigerant therewith. The conductive ice mold may be mounted within the IB compartment. The conductive ice mold may define a mold cavity along the air path to receive a chilled airflow from the evaporator. The thermoelectric heat exchanger (TEHE) may be disposed on the conductive ice mold to draw heat therefrom. The water dispenser may be positioned below the ice mold to direct an ice-building spray of water to the mold cavity.

A refrigerator appliance or ice maker may include an assembly frame, a rotating body, a thermistor wire, and a biasing spring. The rotating body may be rotatably attached to the assembly frame to rotate about an axial direction. The thermistor wire may extend between a static end and a movable end fixed to the rotating body to move therewith. The biasing spring may be fixed to the thermistor wire between the static end and the movable end. The biasing spring may be in biased engagement with the thermistor wire to motivate the movable end toward the static end.

A refrigerator appliance or ice maker may include an assembly frame, a rotating body, a thermistor wire, and a biasing spring. The rotating body may be rotatably attached to the assembly frame to rotate about an axial direction. The thermistor wire may extend between a static end and a movable end fixed to the rotating body to move therewith. The biasing spring may be fixed to the thermistor wire between the static end and the movable end. The biasing spring may be in biased engagement with the thermistor wire to motivate the movable end toward the static end.