| 摘要 |
A low temperature food merchandiser having a cabinet with an open front product area, a primary cold air system for maintaining substantially constant low temperatures of at least 0 DEG F. in the product area including the formation of plural primary low temperature air curtains across the open front, a secondary air system protecting the primary air curtains, and the primary system also including primary evaporator cooling means constructed and arranged to operate at elevated coil temperatures in the range of -5 DEG F. to -2 DEG F. to maintain the 0 DEG F. product area temperature, and including reverse air cycle defrost means for periodically defrosting the primary cooling means.
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