| 摘要 |
PCT No. PCT/SE86/00124 Sec. 371 Date Nov. 12, 1986 Sec. 102(e) Date Nov. 12, 1986 PCT Filed Mar. 21, 1986 PCT Pub. No. WO86/05576 PCT Pub. Date Sep. 25, 1986.The invention relates to a method for a refrigerant system having a circulation circuit comprising a screw compressor (1), a condenser (4), an expansion valve (5) and an evaporator (6). In a refrigerant process, in which an oil injected compressor is connected it is impossible to prevent oil from flowing together with the refrigerant out into the circulation circuit, which among others impairs the operation of the evaporator. According to the invention a drastic reduction of the amount of circulating oil has been obtained together with an improved cooling of the compressor by supplying the low pressure side of the compressor with refrigerant liquid with a pressure and temperature lower than the pressure and temperature of the refrigerant in the condenser in such amounts per unit of time that the required cooling and sealing of the compressor is obtained, the effect of the circulating oil being restricted merely to lubricating. |
