| 摘要 |
<p>PROBLEM TO BE SOLVED: To reliably return lubricating oil to a compressor so that the compressor is sufficiently lubricated.SOLUTION: A refrigerating device comprises: an emergency oil return passage 88 that returns lubricating oil stored in an oil separator 80 to a compressor 10; an oil level sensor 19 that outputs a signal corresponding to a lubricating oil level position in an oil reservoir 18 of the compressor 10; an opening/closing valve 89 provided in the emergency oil return passage 88; and a controller. The oil separator 80 comprises an emergency oil outlet port 82 formed below a normal oil outlet port 81 and connected to the emergency oil return passage 88. The controller performs control so that the opening/closing valve 89 is opened when the output signal of the oil level sensor 19 indicates that the lubricating oil level is lower than a predetermined position.</p> |
