| 摘要 |
PROBLEM TO BE SOLVED: To reduce cost, miniaturize the size, and improve the performance and the reliability in a swinging piston type compressor and freezer. SOLUTION: A compression element 1 having a low-pressure compression element 4 and a high-pressure compression element 5 is arranged in a sealed vessel 3, swinging pistons 4b and 5b integrally formed with rollers 4b1 and 5b1 and vanes 4b2 and 5b2 are used, the inside of the sealed vessel 3 is held at a pressure lower than a discharge pressure of the high-pressure compression element 5, and an oil feeding mechanism intermittently feeding lubricating oil 20 via an oil pocket 21 intermittently communicated with an operation chamber side and an oil feed side of the high-pressure compression element 5 is provided.
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