| 摘要 |
<p>The present invention relates to an oil-free type CNG compressor with cooling means that cools grand packing with cooling oil of crank assembly. The compressor comprises a crank assembly (100) that changes rotary motion to linear motion; a cylinder assembly (200) that is installed in an isolated position from the crank assembly (100) and equipped with a cylinder (210); a distance piece (300) that is placed between the crank assembly (100) and the cylinder assembly (200) and thus keeps oil of the crank assembly (100) from flowing in the inside of the cylinder assembly (200); a piston rod (400) that penetrates into the distance piece (300) and installed over the crank assembly (100) and the cylinder assembly (200); a grand packing (220) that is placed in one side of the cylinder assembly (200) and prevents gas leak inside the cylinder assembly (200); and cooling means (500) that cools the grand packing (220) by letting oil of the crank assembly (100) pass through the grand packing (220), through which gives benefits of anti-leakage and life extension.</p> |
