| 摘要 |
PROBLEM TO BE SOLVED: To lessen the quantity of a charged combustible refrigerant into a refrigeration cycle, fixing eyes upon the refrigerant which does not contribute to the carriage of heat, having dissolved in a lubricant, by constituting a freezing of an oil free compressor where an combustible refrigerant is used and the quantity of the lubricant within the compressor is at a specified value or under, a condenser, a throttle device, and an evaporator. SOLUTION: A scroll compressor 100 is an oil free compressor where the residual oil of a motor part and the quantity of oil accompanying the assembly of a scroll mechanism is 3 cc or under, and a crank shaft 4 rotates, accompanying the rotation of a motor 3, and a rotary scroll 6 turns to the fixed scroll 5. The refrigerant gas at a low pressure is sucked in a suction pipe 12, and it is compressed in the space made between the rotary scroll 6 and the fixed scroll 5, and is discharged into a sealed container 1 from a discharge port 13. Thus, it becomes needles to charge it with a surplus refrigerant, taking the quantity of an inflammable refrigerant dissolved in working oil into consideration, and the quantity of charge of refrigerant can be made small. |
