PURPOSE: To enable continuing the operation, in the use of a cooling apparatus equipped with a scroll type compressor as a means of compressing refrigerant, even when the discharge pressure of the compressor exceeds the upper limit determined on the basis of the evaluated strength of the scroll member.
CONSTITUTION: There are provided a discharge pressure detective means 2231 related to the compressor; a suction pressure detective means 2232; a refrigerant flow ratecontrolling means 2260a for controlling the flow rate of the refrigerant flowing from the high pressure side to the low pressure side in the refrigerant circulation system; a storing means 3400a for storing in a memory allowable discharge pressure characteristics based on pressure differentials between the discharge pressure and the suction pressure both of the compressor and determined by the evaluation of the lap strength of the scroll members; and a valve opening-controlling means 3900 which, when the discharge pressure during operation exceeds the allowable discharge pressure characteristics, adjusts the valve opening of the refrigerant flow rate-controlling means 2260a to temporarily increase the flow rate of the refrigerant flowing from the high pressure side to the low pressure side in the refrigerant circulation system and by so doing enables continuing the operation.
| JPS6270687 | ENCLOSED TYPE SCROLL COMPRESSOR |
| WO/2012/096056 | SCROLL FLUID MACHINE |
| JPH10158888 | ANODIC OXIDATION TREATMENT DEVICE |
OGAWA HIROSHI
YAMASHITA TOSHIO
