| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a pumping device which requires small space for installation to allow effective utilization spatial and can take effective measures for sound insulation, cold protection and dust-proofing in a small volume. SOLUTION: A case 11 accommodates in a line on the same plane a plurality of boosters 3A and 3B in rod shape to cool the motor part by feeding a liquid in handling to at least around the motor part, wherein the door and back surface 11r of the case 11 are made approximately parallel with that plane with boosters 3A and 3B, and a water feeding pipe 1 to the boosters 3A and 3B and a water discharge pipe 4 therefrom are installed on the same plane with boosters. The whole inner surface of the case 11 is lined with a sound insulating material 12.</p> |
