Cooling-cycle device and cold/hot water dispenser comprising the same

In a cooling-cycle device including a compressor, a condenser, an expansion unit, and an evaporator connected with piping into a closed for a refrigerant, the improvements wherein:

• the compressor comprises a closed container having therein a compressing unit including a compressing compartment to compress the refrigerant, a driving unit including a low-speed motor having four or more poles to supply compressing power to the compressing unit according to the compression of the refrigerant, and a turbocharger to flow the refrigerant into the compressing compartment;
• wherein the turbocharger receives a driving force from the driving unit and flows the refrigerant from the closed container into the compressing compartment;
• wherein the driving unit comprises a stator fixed within the closed container, a rotor positioned in the stator, and a rotational shaft fitted into the rotor;
• wherein the compressing compartment comprises a cylinder and the compressing unit comprises a piston movable linearly in the compressing compartment and a connecting rod connected between an eccentric on one end of the rotational shaft and the piston;
• and
• wherein the turbocharger comprises an assistant cylinder for defining a charging compartment therein, an assistant piston movable linearly in the charging compartment, an assistant connecting rod connected between the eccentric and the assistant piston, a suction passage to communicate the closed container with the charging compartment, and a discharge passage to communicate the charging compartment with the compressing compartment.