Vacuum freeze drying apparatus
First Claim
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1. APPARATUS FOR FREEZE DRYING LIQUID AND SEMILIQUID PRODUCTS COMPRISING, IN COMBINATION:
- (A) A VACUUM CHAMBER;
(B) MEANS FOR MAINTAINING SAID VACUUM CHAMBER AT A PRESSURE NOT EXCEEDING ABOUT 0.180 INCH OF MERCURY ABSOLUTE;
(C) MEANS OUTSIDE SAID VACUUM CHAMBER FOR REDUCING THE PRODUCT TO A FINE FROZEN POWDER INCLUDING A VESSEL, MEANS FOR SPRAYING THE PRODUCT INTO THE VESSEL, A SOURCE OF INERT GAS, MEANS FOR REFRIGERATING SAID GAS, MEANS FOR EFFECTING AN UPWARD FLOW OF THE REFRIGERATED GAS THROUGH SAID VESSEL TO THEREBY CONTACT AND FREEZE SAID PRODUCT, AND A CYCLONE TYPE SEPARATOR FOR SEPARATING THE FROZEN PRODUCT FROM THE GAS;
(D) A CONTINUOUSLY OPERATING CONVEYOR DISPOSED IN THE VACUUM CHAMBER;
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1 Claim
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1. APPARATUS FOR FREEZE DRYING LIQUID AND SEMILIQUID PRODUCTS COMPRISING, IN COMBINATION:
- (A) A VACUUM CHAMBER;
(B) MEANS FOR MAINTAINING SAID VACUUM CHAMBER AT A PRESSURE NOT EXCEEDING ABOUT 0.180 INCH OF MERCURY ABSOLUTE;
(C) MEANS OUTSIDE SAID VACUUM CHAMBER FOR REDUCING THE PRODUCT TO A FINE FROZEN POWDER INCLUDING A VESSEL, MEANS FOR SPRAYING THE PRODUCT INTO THE VESSEL, A SOURCE OF INERT GAS, MEANS FOR REFRIGERATING SAID GAS, MEANS FOR EFFECTING AN UPWARD FLOW OF THE REFRIGERATED GAS THROUGH SAID VESSEL TO THEREBY CONTACT AND FREEZE SAID PRODUCT, AND A CYCLONE TYPE SEPARATOR FOR SEPARATING THE FROZEN PRODUCT FROM THE GAS;
(D) A CONTINUOUSLY OPERATING CONVEYOR DISPOSED IN THE VACUUM CHAMBER;
- (A) A VACUUM CHAMBER;
Specification