Patent ID: 9681677
Date: 2017-06-20
CPC Classifications: A23L,A23V,A47J,F25D,H01F,H01T

Claim:
1. A storage device for maintaining a freshness of an object stored therein, comprising: a potential generator; and a compartment for determining a storage space formed around a discharging electrode of the potential generator, wherein the potential generator comprising: the discharging electrode is shaped as a plate shape, the feedback control circuit and the output control portion are formed to cause a delay in the circuit so that the low frequency vibration is applied to the discharging electrode of the secondary coil, a vibration frequency of the low frequency vibration applied is 40 Hz to 60 Hz which is determined by the output control portion, a grounding electrode is not provided on the potential generator, a current flowing through the secondary coil is a weak current having a range of 0.002 A to 0.2 A, the static electricity is discharged from a surface of the discharging electrode provided on the other terminal of the secondary coil to the storage space, the discharging electrode is covered with an insulating member having a predetermined insulating property suitable for allowing the discharging electrode to discharge the static electricity of the predetermined voltage to the surrounding space, and an electric field is formed in the storage space by discharging the static electricity from the surface of the discharging electrode of the potential generator to keep the object in the electric field formed in the storage space.