Refrigerating method and apparatus

摘要

Method for refrigerating showcases characterized by the steps of cooling air within a refrigerating unit (11) to a temperature below the predetermined temperature in showcases (1) and feeding said cooled air as refrigerating source into said showcases through feeding piping (12); mixing said cooled air with air in said showcases (1) thereby to carry out refrigerating in said showcases while collecting said air in said showcases in the same quantity of said cooled air fed into said showcases through collecting piping (13) into said refrigerating unit (11); and cooling said collected cooled air in said refrigerating unit (11) for using again said collected and cooled air as refrigerating air. The refrigerating device according to the invention has lower initial and running costs and can effectively utilize the internal space of showcases and automatic vending machines for goods containing use. <IMAGE>