| 摘要 |
A refrigerant apparatus having a compressor, a condenser, an expansion value, evaporator and an oil repellent coat. An oil repellent coat is coated inside of a low pressure refrigerant passage which lubricant is easy to adhere so that lubricant is prevented from staying inside of the refrigerant passage. Since the oil repellant coat is low affinity for oil, luricant forms guttulate on the oil repellent coat by surface tension. Since the guttulate is easy to move on the inside wall with a flow of the refrigerant, it is prevented lubricant from staying on the inside wall.
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