Refrigeration – Automatic control – Refrigeration producer
Patent
1990-01-08
1991-07-23
Tanner, Harry B.
Refrigeration
Automatic control
Refrigeration producer
62157, 62208, 62272, 165133, F25B 502, F25B 4104
Patent
active
050332724
ABSTRACT:
A refrigerator comprising a refrigeration cycle which comprises a compressor, condenser, first capillary tube and first cooler connected into a loop, and a quick freezing refrigerant circuit connected in parallel with the first cooler and comprising a second capillary tube and a second cooler connected in series therewith. The refrigerant is passed through the first cooler for usual operation, or alternatively through the quick freezing circuit for quick freezing. During quick freezing, the first cooler is held out of operation, and the refrigerant has its pressure reduced in two steps by the first and second capillary tubes and is evaporated in the second cooler only, giving a low temperature effective for quick freezing. During usual operation, no refrigerant flows into the second cooler, which therefore remains free of frosting. The frost deposited on the second cooler during quick freezing disappears during the usual operation. Thus, the second cooler is substantially free from frost.
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Kamitaka Masuo
Sugimoto Kazuo
Takagi Shinya
Yoshida Hiroyuki
Yoshikawa Masaharu
Sharp Kabushiki Kaisha
Tanner Harry B.
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