Ulvac, Inc.

Masaki Itou

Kyuzo Nakamura

Takashi Hanamoto

Katsuhiko Itou

Takeo Kato

Tsuyoshi Yoshimoto

Hirohiko Murakami

Tsutomu Nishihashi

Seiji Ogata

Haruhisa Nakano

Takumi Komiya

Takao Kinoshita

A freeze vacuum drying apparatus includes: a spraying unit; a pipe unit; a heating unit; and a collection unit. The spraying unit sprays a raw material liquid into a vacuum chamber. The pipe unit has a non-linear shape, includes a first opening end and a second opening end, and traps frozen particles via the first opening end, the frozen particles being formed by self-freezing of liquid droplets formed by spraying the raw material liquid into the vacuum chamber. The heating unit heats the frozen particles in the pipe unit for sublimation drying, the frozen particles moving in the pipe unit from the first opening end toward the second opening end by kinetic energy produced during spraying. The collection unit collects dried particles that are formed by sublimation drying of the frozen particles in the pipe unit and released from the second opening end of the pipe unit.

Freeze vacuum drying apparatus and freeze vacuum drying method

[Object] To provide a freeze-drying apparatus and a freeze-drying method, which are capable of increasing a drying efficiency of frozen particles. [Solving Means] The freeze-drying apparatusincludes a freezing chamberinto which a raw material fluid F is injected. During the injection of the raw material fluid F, after the injection of the raw material fluid F, or for a time period covering the start to the termination of the injection of the raw material fluid F, a shelfis vibrated in a horizontal direction due to an actuation of vibration generators. With this, the frozen particles deposited on the shelfare evenly diffused on the shelfin such a manner that a deposition thickness thereof becomes smaller or a single layer thereof is formed. With this, a freezing efficiency and the drying efficiency of individual particles are promoted.

Freeze-drying apparatus and freeze-drying method

A vacuum freeze-drying apparatus capable of rapid drying is provided. A cold trap for drying, which is arranged inside a drying chamber, is set to a low temperature of &#x2212;70 degrees Celsius or below, and heat is supplied to frozen particles on a conveyor belt to a degree such that the frozen particles do not melt. The amount of the liquid component evaporating from the frozen particles increases, and the amount of the liquid component entering the frozen particles decreases so that the time for drying the frozen particles is shortened.

Vacuum freeze-drying apparatus and method for vacuum freeze drying

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Chigasaki, Japan

Masaki Itou