Mayekawa Mfg. Co., Ltd.

Youichi Hiraga

Kouichi Tsubata

Shigeru Iwami

Nobuya Ishitsuka

A freeze-drying system is provided in which freeze-drying is performed by sublimating moisture frozen by cooling an object and collects the sublimated moisture with a cold trap. The freeze-drying system includes: a cooling device which generates cold with an air cycle in which air is used as a refrigerant; a freeze-drying chamber accommodating a heat exchange unit which causes heat exchange between the refrigerant and the object; a cold air supplying mechanism which supplies precooled air into the freeze-drying chamber; and a control unit which controls a cooling capacity of the cooling device. The control unit adjusts the temperature in the freeze-drying chamber to a predetermined target temperature by controlling an amount of the cold generated in the cooling device. The cold air supplying mechanism includes an air supply line through which air, as the refrigerant that circulates in the air cycle, is partially introduced into the freeze-drying chamber.

Freeze-drying system and freeze-drying method

An object is to provide a freeze-drying system and a freeze-drying method which can improve cleanliness and productivity. The present invention relates to a freeze-drying system in which freeze-drying is performed by sublimating moisture frozen by cooling an object. The system includes a cooling device () which generates cold with an air cycle in which air is used as a refrigerant, a freeze-drying chamber () accommodating a heat exchange unit which causes heat exchange between the refrigerant and the object, and a control unit () which controls a cooling capacity of the cooling device. The control unit adjusts the temperature in the freeze-drying chamber to a predetermined target temperature by controlling an amount of the cold generated in the cooling device.

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Tokyo, Japan

Youichi Hiraga