Refrigerator system with refrigerant expansion through capillary tubes of adjustable length

摘要

A refrigerant system with mechanical compression and refrigeration cycle wherein the refrigerant is expanded through a set of capillary tubes of which the length is adjustable in response to a temperature transducer located within the evaporator section of the system. The means for regulating the capillary tubes length comprises a threaded cylinder slidably received within a tube, the trough of the screw thread functioning as a capillary tube. The system further comprises a trap means for capturing any liquid refrigerant escaping through the capillary tubes when the compressor is not running and for circulating the captured liquid refrigerant when the compressor is re-started.