| 摘要 |
<p>PURPOSE:To raise the temperature of low-temperature operating fluid to improve a pump efficiency by a method wherein the flow path of the operating fluid, from an introducing port to the suction port of the pump, is provided in a tank housing, provided on the outer periphery of a motor housing, to cool a motor section. CONSTITUTION:The flow path 14, through which the operating oil flows, is formed between the tank housing 13 and the motor housing 10. The operating oil is sucked from the introducing port 16 provided on the first motor housing 7 and, subsequently, it flows along the outer peripheries of the first motor housing 7 and the second motor housing 10. Then, it passes through a filter 15 in the flow path 14 and, thereafter, flows into an operating oil tank 32. According to this constitution, the operating oil absorbs heat generated by the motor and the temperature thereof may be raised.</p> |
