| 摘要 |
PURPOSE:To prevent the dew from occurring inside by the self heat generation of a motor by introducing the air, from which moisture is removed by an adsorbent, into a totally enclosed rotary motor at pressure higher than outside air pressure. CONSTITUTION:A protector s5 constituted to supply compressed air from an air source 25 to each motor 20-24 through an air pipe 26. Hereupon, an air filter 28 removes the dust contained in the air from the air source, and an oil mist separator 29 collects solid foreign matter, moisture, and oil. Moreover, a drier 30 is provided to dry the compressed air, and this drier is adsorption type, and it makes solid adsorbent such as silica gel, etc., adsorb moisture to dry the compressed air. Hereby, the dew occurring inside by the self heating of a motor can be prevented, and further since it is adsorption type, it can supply dry air just after operating the protector. Moreover, since the dry air is made higher than outside air pressure, the penetration of the moisture from outside can be checked. |
