Refrigeration system and compressor thereof

A refrigeration system comprising:

• a heat absorption unit for absorbing heat from a peripheral portion to fluid under a predetermined constant pressure;
• a compression unit for sucking the fluid discharged from the heat absorption unit and compressing;
• a heat radiating unit for radiating heat from the fluid compressed in the compression unit and discharged to a peripheral portion under a predetermined constant pressure;
• and
• an expansion unit for lowering pressure of the fluid which passed through the heat radiating unit by an adiabatic expansion and driving the first compression unit and the second compression unit by work generated from the expansion.

A compressor of a refrigeration system comprising:

• a driving unit;
• a compression unit for compressing fluid by a driving of the driving unit and discharging to the heat radiating unit;
• and
• an expansion unit for lowering pressure of the fluid which passed through the heat radiating unit by an adiabatic expansion and driving the compression unit by work generated from the expansion.

A refrigerator comprising:

• a heat absorption unit for absorbing heat from a peripheral portion to fluid under a predetermined constant pressure;
• a first compression unit for sucking the fluid discharged from the heat absorption unit and compressing;
• an intermediate cooling unit for cooling the fluid compressed in the first compression unit;
• a second compression unit for re-compressing the fluid discharged from the intermediate cooling unit;
• a heat radiating unit for radiating heat from the fluid compressed in the second compression unit and discharged to a peripheral portion under a predetermined constant pressure;
• an expansion unit for lowering pressure of the fluid which passed through the heat radiating unit by an adiabatic expansion and driving the first and second compression units by work generated from the expansion;
• and
• a cooling flow path for passing the fluid discharged from the expansion unit through the intermediate cooling unit.

An air conditioner comprising:

• a heat absorption unit -for absorbing heat from a peripheral portion to fluid under a predetermined constant pressure;
• a first compression unit for sucking the fluid discharged from the heat absorption unit and compressing;
• an intermediate cooling unit for cooling the fluid compressed in the first compression unit;
• a second compression unit for re-compressing the fluid discharged from the intermediate cooling unit;
• a heat radiating unit for radiating heat from the fluid compressed in the second compression unit and discharged to a peripheral portion under a predetermined constant pressure;
• an expansion unit for lowering pressure of the fluid which passed through the heat radiating unit by an adiabatic expansion and driving the first and second compression units by work generated from the expansion;
• and
• a cooling flow path for passing the fluid discharged from the expansion unit through the intermediate cooling unit.