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Freeze drying apparatus with additional condensation surface and refrigeration source

  • US 4,949,473 A
  • Filed: 07/29/1988
  • Issued: 08/21/1990
  • Est. Priority Date: 07/29/1987
  • Status: Expired due to Term
First Claim
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1. A freeze drying apparatus, comprising:

  • a vacuum chamber;

    an evacuation system comprised of a condenser and a vacuum pump connected by a conduit including a second valve, and a refrigeration machine, wherein the condenser has at least one condensation surface supplied by the refrigeration machine and wherein the condenser is connected to the vacuum chamber by a conduit including a third valve;

    a reservoir container containing a coolant which is a liquid having a low boiling point; and

    an additional condensation surface which is connected to the reservoir container by a conduit including a first valve and which is disposed in the condenser.

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