| 摘要 |
PROBLEM TO BE SOLVED: To cool a motor part without using cooling water in a canned motor pump. SOLUTION: A cooling jacket 30 is installed in the outer circumference of the motor part 16 of the canned motor pump 10. A cooling pipe 38 through which handling fluid of the pump 10 flows is installed inside the cooling jacket, and a good heat conductive material is sealed so as to fill the residual space. Part of the handling fluid sent out with a pump part 14 is made to flow in the cooling pipe 38 to cool the motor part 16.
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