FREEZE-DRYING METHOD AND APPARATUS FOR THE SAME
First Claim
1. A heating method to objects to be dried in freeze-drying by a far infrared heater, including a step of mounting frozen objects to be dried or unfrozen objects to be dried in containers having a high absorption power of radiant heat from the far infrared heater and having a suitable thermal conductivity, or mounting the objects to be dried in containers with lids which keep atmosphere in a reduced pressure tank;
- a step of mounting the frozen objects to be dried or the unfrozen objects to be dried which are mounted in the containers, into the reduced pressure tank under an atmospheric pressure; and
a step of sublimating the objects to be dried in a reduced pressure state where the sublimation of the objects to be dried takes place in the reduced pressure tank through heating and heat conduction to the containers or the containers with the lids by the radiant heat of the far infrared heater disposed in the reduced pressure tank.
4 Assignments
0 Petitions
Accused Products
Abstract
A freeze-drying method by a far infrared heater including the steps of: mounting the frozen objects to be dried prior to heating in the containers in which an absorption power of the radiant heat from the far infrared heater and a thermal conductivity are high, respectively; mounting the said objects which are contained in the containers into the reduced pressure tank under an atmospheric pressure; heating the containers by the radiant heat from the far infrared heater disposed in the reduced pressure tank; and sublimating the frozen water contents of the objects in a reduced pressure state where sublimation of the objects occurs in the reduced pressure tank.
-
Citations
10 Claims
-
1. A heating method to objects to be dried in freeze-drying by a far infrared heater, including a step of mounting frozen objects to be dried or unfrozen objects to be dried in containers having a high absorption power of radiant heat from the far infrared heater and having a suitable thermal conductivity, or mounting the objects to be dried in containers with lids which keep atmosphere in a reduced pressure tank;
- a step of mounting the frozen objects to be dried or the unfrozen objects to be dried which are mounted in the containers, into the reduced pressure tank under an atmospheric pressure; and
a step of sublimating the objects to be dried in a reduced pressure state where the sublimation of the objects to be dried takes place in the reduced pressure tank through heating and heat conduction to the containers or the containers with the lids by the radiant heat of the far infrared heater disposed in the reduced pressure tank. - View Dependent Claims (2, 3, 4, 5)
- a step of mounting the frozen objects to be dried or the unfrozen objects to be dried which are mounted in the containers, into the reduced pressure tank under an atmospheric pressure; and
-
6. A freeze-drying apparatus is characterized in that the said freeze-drying apparatus includes a reduced pressure tank in which a far infrared heater is disposed along a sidewall, or the sidewall and a ceiling;
- a container carrier which conveys a plurality of containers to contain mounted objects to be dried into the reduced pressure tank, and supports the containers in a drying step;
the containers having a high absorption power of radiant heat and mounted via a space in multistage of the container carrier;
the frozen objects to be dried which are contained in the containers;
a tray support member of the container carrier in which the respective containers containing the frozen objects to be dried are vertically arranged via the space on multistage so that the containers are evenly irradiated with heat radiated from the far infrared heater and in which the containers mounted on the respective stages are tilted at the same angle or at such angles that the containers are evenly irradiated with the radiated heat; and
inside the reduced pressure tank, a control section including a heating temperature detecting section and a pressure detecting section is arranged in order to sublimate the objects to be dried in the reduced pressure state where the sublimation of the objects to be dried occurs in the reduced pressure tank; and
outside the reduced pressure tank, a heating temperature control section of the far infrared heater to the containers and a pressure control section which controls the pressure inside the tank are arranged. - View Dependent Claims (7, 8, 9, 10)
- a container carrier which conveys a plurality of containers to contain mounted objects to be dried into the reduced pressure tank, and supports the containers in a drying step;
Specification