Automatic temperature control
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United States of America Patent
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Jul 15, 2003
Grant Date -
N/A
app pub date -
Jun 18, 2001
filing date -
Nov 5, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and device (18) to control the temperature T in a refrigerator or freezer cabinet (10), which keep a set temperature in a space (12) in the cabinet. The space is refrigerated by an element (14) of an intermittently operating refrigerating machine (16). The refrigerator cabinet has a control gear (18), which consists of a first means (20) and a second means (22), a third means (24) and a fourth means (26). The first means is situated at the refrigerating element, which is placed in the space, and it measures a regulating temperature. The second means is arranged at a reference point in the space, and it measures a current temperature in the space. The third means compiles an average temperature of the current temperatures. The forth means compiles a discrepancy between the average temperature and a preset temperature. When this discrepancy is greater then a predetermined value for discrepancies, the connect and/or disconnect temperatures are changed so that the temperature in the space approaches the preset value.
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