Oil return method and device for refrigeration system

Oil return method and device for refrigeration system

  • CN 100,400,983 C
  • Filed: 01/10/2001
  • Issued: 07/09/2008
  • Est. Priority Date: 01/10/2001
  • Status: Active Grant
First Claim
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1. a refrigeration system comprises compressor (1), oil eliminator (2), four-way change-over valve (3), condenser (4), choke valve (5), evaporimeter (6), curved return line (7), high pressure receiver (8) and the low pressure receiver (9) of band oil;

  • Wherein, the low-pressure side cooled via return air pipeline (7) of compressor (1) is received the cold-producing medium output of low pressure receiver (9);

    The cold-producing medium input of oil eliminator (2) and oil revolving end connect the high-pressure side and the low-pressure side of described compressor (1) respectively;

    Four-way change-over valve (3) is connected respectively to cold-producing medium output, the condenser (4) of oil eliminator (2), the cold-producing medium input and the evaporimeter (6) of low pressure receiver (9);

    Condenser (4) is connected to evaporimeter (6) through choke valve (5) and high pressure receiver (8);

    It is characterized in that, also comprise the bypass line (11) that is attempted by described evaporimeter (6) two ends, be serially connected with magnetic valve (10) on the described bypass line (11).

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