A variable-volume superimposed vacuum drying incubator

Abstract

The invention relates to a variable-volume stacking type vacuum drying constant-temperature box which comprises an upper cover (1), a plurality of stackable box bodies (2) and a bottom box body (3). The upper cover (1), the stackable box bodies (2) and the bottom box body (3) are in seal connection from top to bottom in sequence. Adjustable and controllable constant-temperature plate type heating elements (9) are arranged in the stackable box bodies (2) and the bottom box body (3), and connected with a power source and a multichannel temperature controller (14) through power lines and temperature control lines (10). A vacuum pump (12) is arranged below the bottom box body (3) and used for vacuumizing the interiors of the stackable box bodies (2) and the interior of the bottom box body (3). The temperature of the stackable box bodies (2) and the temperature of the bottom box body (3) are controlled through the power source and the multichannel temperature controller (14). Samples (7) are arranged on the adjustable and controllable constant-temperature plate type heating elements (9). Compared with the prior art, the variable-volume stacking type vacuum drying constant-temperature box has the advantages of being large in volume, high in heat transfer efficiency, small in size, simple in structure, easy to maintain and the like.

Description

technical field [0001] The invention relates to a vacuum drying constant temperature box, in particular to a variable volume stacked vacuum drying constant temperature box. Background technique [0002] The usual vacuum drying incubator adopts the form of a horizontal cylindrical inner wall, external heating, and a round window-shaped door. This arc-shaped space restricts the placement of shelves, and the effective volume is small. At the same time, the air in the box is thin, so heat cannot be transferred by convection. The heat is transferred from the inner wall to the shelf and then to the items, and the balance is relatively slow. ,low efficiency. [0003] Chinese patent application 201310184575.9 discloses a high-efficiency constant temperature and quick-cooling vacuum drying box, which includes a cabinet, a fully automatic control box is provided on one side of the cabinet, and at least one vacuum drying device is installed in the cabinet, and each vacuum drying devic...

AI Technical Summary

Problems solved by technology

Although this device can also achieve constant temperature drying of multiple cabinets at the same time, each cabinet is equipped with a separate drying system, which requires a lot of equipment, high cost, and large floor space, and is cooled by the water circulation outside the cabinet. To control the constant temperature, the temperature control balance is slow and the efficiency is low

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