FREEZER WITH HYBRID TYPE NITROGEN SPRAY SYSTEM AND THE FREEZING AUXILIARY APPARATUS THEREFOR

摘要

The present invention relates to a hybrid freezer having a nitrogen spraying system and an auxiliary freezing apparatus, and more particularly, to a hybrid freezer having a nitrogen spraying system which can be used as an emergency measure able to maintain temperature of the freezer for long hours even in an emergency, such as an occurrence of power failure or mechanical trouble of the freezer in a cryogenic storage having a lower temperature than 30 degrees below zero, and an auxiliary freezing apparatus. The present invention includes a nitrogen supplying device which can cool down the inside of the freezer to a desired temperature within a short period of time by assisting the existing freezer and promptly gives an alarm on extraordinary and emergency situations, and includes various devices for effectively operating the nitrogen supplying device, so that the hybrid freezer can be controlled to use minimum cooling energy sources by calculating the amount of heat required for the economical and effective temperature management inside the freezer not only for the case of normal operation but also for the case of emergency.