To provide a low-temperature chamber in which a cause of malfunction in cooling and the like is made easy to ascertain by correctly grasping the content of the malfunction.
In the low temperature chamber, air is circulated by a cooling fan 3, and cooled by a combination 1 of a precool-stored cooling-device and a cool-storage medium, and the cool air is discharged from a cool-air outlet 9 to cool the chamber 7, and refrigerated articles are carried under cooling of the chamber. Temperature recorders 10 are attached in the vicinities of the outlet 9, the cool storage medium of the combination 1, and the open-air inlet part of a condenser 5, etc. The recorders 10 record temperature histories of the discharged cool air from the outlet 9, the cool-storage medium and the open air. When malfunction is generated in the low temperature chamber, a position of malfunction is located by checking the temperature histories.
KAWAGUCHI TAKESHI
NIIJIMA HIROSHI
Next Patent: SYSTEM FOR CONTROLLING SHOWCASE