| 摘要 |
PURPOSE:To prevent generation of drain in such a way that when stopping a motor, oil is heated by means of an oil heater, and radiation of heat caused from spontaneous radiation of heat or from adiabatic expansion is compensated. CONSTITUTION:When a starting switch is operated in the condition that oil is cooled enough to the extent of room temperature, and it is empty in a reserve tank 8, a compressor body 1 amply sucks gaseous matter through a filter 4 together with oil, and does compressing action. When pressure in the reserve tank 8 goes up to its determined pressure, it makes unloader operation, and when a temperature switch 21 for oil temperature goes up to its determined temperature, and it is opened, a motor 2 comes to a stop. Though stop of the motor 2 makes an oil tank 6 its temperature go down by means of spontaneous radiation of heat, or by means of adiabatic expansion in keeping with atmospheric release of compressed gaseous matter, then an oil heater 23 is electrically conducted, and temperature drop can be prevented. |
