| 摘要 |
<p>PROBLEM TO BE SOLVED: To enable variation in increasing or decreasing of an ice storage amount to be detected.SOLUTION: An ice storage unit 50 comprises a plurality of ice detection sensors 51 arranged in an ice storage chamber 13 under a specified space in a vertical direction and an ice amount monitoring part to which temperature information from each of the ice detection sensors 51 is inputted. Each of the ice detection sensors 51 comprises an ice contact plate 53 of which temperature varies under a contacted or non-contacted state with ice and a temperature detecting sensor 54 for detecting temperature variation of the ice contact plate 53 and sending temperature information to an ice storage amount monitoring part 85. The ice storing amount monitoring part detects an amount of ice in the ice storage chamber 13 in a stepwise manner by judging that the ice is contacted with the ice contact plate 53 when a temperature of the ice contact plate 53 of each of the ice detecting sensors 51 becomes less than a prescribed judgment temperature T1.</p> |
