Device and Method for Controlling a Dehydration Operation During a Freeze-Drying Treatment

Device and Method for Controlling a Dehydration Operation During a Freeze-Drying Treatment

A device for controlling the dehydration operation during a freeze-drying treatment comprises a freeze-drying chamber (1) connected to a vacuum line, and a gas analyzer, for analyzing the gases contained in the chamber. The gas analyzer comprises a gas ionization system (8) comprising a plasma sourc...

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Hauptverfasser: PIERREJEAN DIDIER, NOMINE CYRILLE, CHAPRON AURELIE, PATEL KETAN
Format: Patent
Sprache:eng
Schlagworte:
BLASTING
DRYING
DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
HEATING
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
LIGHTING
MEASURING
MECHANICAL ENGINEERING
PHYSICS
TESTING
WEAPONS
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creator PIERREJEAN DIDIER
NOMINE CYRILLE
CHAPRON AURELIE
PATEL KETAN
description A device for controlling the dehydration operation during a freeze-drying treatment comprises a freeze-drying chamber (1) connected to a vacuum line, and a gas analyzer, for analyzing the gases contained in the chamber. The gas analyzer comprises a gas ionization system (8) comprising a plasma source (13) in contact with the gases, which plasma source is combined with a generator (15) capable of generating a plasma from said gases, and a system for analyzing the ionized gases, comprising a radiation sensor (17) located close to the plasma generation zone and connected to an apparatus (18) for analyzing the change in the radiative spectrum emitted by the plasma. According to the invention, the device includes a means (16) for repeatedly turning the plasma source (13) on and off. The device may further include an optical port (25) placed between the gas ionization system (8) and the freeze-drying chamber (1). The method of controlling the dehydration operation during a freeze-drying operation comprises an alternation of phases during which the plasma source (13) is turned on and phases during which the plasma source (13) is turned off.
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subjects BLASTING
DRYING
DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
HEATING
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
LIGHTING
MEASURING
MECHANICAL ENGINEERING
PHYSICS
TESTING
WEAPONS
title Device and Method for Controlling a Dehydration Operation During a Freeze-Drying Treatment
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