Phc Holdings Corporation

Naoki Yanagihara

Mitsuyuki Shirata

A cold storage includes a box including a cold storage chamber, a sliding door that opens and closes the cold storage chamber, and a machine chamber; a compressor disposed in the machine chamber and constituting a refrigeration circuit that cools the inside of the cold storage chamber; a fan that generates an airflow passing around the compressor and blown to the sliding door through an air outlet opened to the machine chamber; a heater disposed in the cold storage chamber; and a control apparatus that operates the heater when a condition of a set temperature for the cold storage chamber being equal to or lower than a specified temperature and a condition of the compressor being in an operating state are satisfied.

Cold storage

A cold storage includes a box with a cold storage chamber, a compressor constituting a refrigeration circuit that cools the inside of the cold storage chamber, a defrost heater that heats an evaporator constituting the refrigeration circuit, and a control apparatus that controls the compressor and the defrost heater. The control apparatus operates the defrost heater when the compressor is not operated. When an outside air temperature is equal to or higher than a chamber temperature in the cold storage chamber, the control apparatus operates the compressor upon the chamber temperature rising up to a first threshold and stops the compressor upon the chamber temperature dropping down to a second threshold lower than the first threshold. When the outside air temperature is lower than the chamber temperature, the control apparatus does not operate the compressor even when the chamber temperature rises up to the first threshold.

Growing community of inventors

Gunma, Japan

Naoki Yanagihara