Abstract: A stirling cycle system driving device comprises a circumference cam having a circumferential guiding groove formed in the outer peripheral surface thereof, a piston rod and a displacer rod respectively having a wheel guided along said circumferential guiding groove, a crank case having guiding grooves for guiding said piston rod and said displacer rod only upward and downward, a piston and a displacer, and a cylinder case. According to the present invention, because a crank shaft is not needed, the device can be minified and the quantity of the working fluid can be decreased. Preferably, the device further comprises a following gear connected to the displacer rod and the piston rod, a driving gear engaged with said following gear, and a control motor for driving said driving gear, by which the phase angle between the piston and the displacer can be regulated.

Abstract: A Stirling cycle refrigerator comprises a refrigerating force supplying section including a Stirling freezing unit driven in Stirling cycle, a motor for driving the Stirling freezing unit, and a first heat transmitting part for emitting a refrigerating force from the Stirling freezing unit; and a refrigerating force applying section including a case, a cover covering the case, a second heat transmitting part for receiving refrigerating force from the first heat transmitting part, and a freezing processing device for freezing contents in the case for a desired type. The refrigerating force applying section peforms freezing by means of the refrigerating force supplied by the refrigerating force supplying section. The Stirling cycle refrigerator enables rapid freezing of food and successive reiterative production of ice cream, being of a smaller size compared to a conventional refrigerator.