| 摘要 |
A method and apparatus for recovering compressible refrigerant from a refrigeration system (12) and delivering the recovered refrigerant to a refrigerant storage means (86). The recovery method includes the steps of withdrawing refrigerant (from a refrigeration system (12) being serviced), compressing, condensing and delivering it to the refrigerant storage means (86). In the pre-cool mode the system begins to withdraw stored refrigerant from the storage means (86). The refrigerant withdrawn from the storage means (86) is then compressed, condensed to form liquid refrigerant which is delivered directly back to the storage means (86) to thereby pre-cool the storage means (86) and the refrigerant contained therein. This pre-cooling cycle is performed for a predetermined time period. After the predetermined time period, the condensed refrigerant withdrawn from the storage means (86) is caused to pass through an expansion means prior to delivering it back to the storage means (86). <IMAGE> |
