PURPOSE: To shut out the lubricating oil which will be mixed in the main body of the titled device by a method wherein the vacant space located in the vicinity of the outer circumference of a driving motor and the part adjoining to the inlet port of a blower are coupled using piping, the vacant space and the inner part of the main body of the laser light generating device are interconnected making a detour passing through a labyrinth part, and the difference of pressure applied from the vacant space to the inner part of the main body of the laser light generating device is removed.
CONSTITUTION: A vane wheel 14 is installed at the tip of the output shaft 13 of a driving motor 12 which constitutes the blower 10, and a laser medium is exhausted from the inlet port 15 to an exhaust port 16 by means of the vane wheel. An ordinary structure is formed in this constitution, but a bypass passage consisting of a piping 22, an oil mist trap 23 and a piping 24 is additionally provided, and said bypass passage is interconnected to the vacant space 20 made at the outer circumference of the stator of the motor 12. At this point, the conductance of the piping part which forms the bypass passage is sufficiently made larger than that of the labyrinth 18, and also, coupled with the existence of the oil misttrap 23, the vapor of lubricating oil 21 accumulated at the bottom of the blower can be prevented from flowing into the main body of the device.
| JP2013032769 | FAN |
| WO/2014/193578 | CENTRIFUGAL COMPRESSOR HAVING LUBRICANT DISTRIBUTION SYSTEM, BEARING SYSTEM AND LUBRICATION METHOD |
| JPS5837995 | [Title of the device] Turbo type compressor |
SUGAWARA HIROYUKI
SHIROKURA TOSHIJI
KAWAKUBO YUKIO
SASAKI HIROHARU
