초록 ▼

A freeze drying apparatus comprises a heat-transfer medium container having heat-transfer medium inlet/outlet pipes, a plurality of tubes extending through the heat-transfer medium container from its lower plate to upper plate, a lower space formed beneath the heat-transfer medium container and bein

A freeze drying apparatus comprises a heat-transfer medium container having heat-transfer medium inlet/outlet pipes, a plurality of tubes extending through the heat-transfer medium container from its lower plate to upper plate, a lower space formed beneath the heat-transfer medium container and being in communication with the tubes and a product liquid inlet/outlet conduit, an openable bottom lid defining the bottom of the lower space, an upper space formed above the upper plate of the heat-transfer medium container, a trap chamber being in communication with the upper space, pressure regulation lid means operable to airtightly cover part of the tubes at their upper ends, and a pressure regulation conduit with pressure regulation valve operable to regulate pressure in the tubes covered with the pressure regulation lid means.

대표청구항 ▼

A freeze drying apparatus having: a drying chamber including an upright cylindrical heat-transfer medium container having heat-transfer medium inlet/outlet pipes, a plurality of upright tubes extending through said container from a lower plate to an upper plate, a lower space formed beneath the lowe

A freeze drying apparatus having: a drying chamber including an upright cylindrical heat-transfer medium container having heat-transfer medium inlet/outlet pipes, a plurality of upright tubes extending through said container from a lower plate to an upper plate, a lower space formed beneath the lower plate of said heat-transfer medium container and being in communication with the interior of said tubes and a product liquid inlet/outlet conduit, an openable bottom lid defining the bottom of said lower space, an upper space formed above said upper plate of said heat transfer medium container and being in communicating with the interior of said tubes, and a trap chamber provided with a pressure regulation valve and being in communication with said upper space, wherein pressure regulation lid means is engageably provided to the upper end of said tubes to airtightly close the upper end, said tubes include one tube set not be covered with said pressure regulation lid means and an other tube set to be covered with said pressure regulation lid means, and a pressure regulation conduit is provided which has a pressure regulation valve adapted to regulate pressure in the other tube set covered with said pressure regulation lid means independently of pressure in said one tube set.