Purified water heat exchange device for defrosting of freeze dryer

The utility model provides a purified water heat exchange device for defrosting of a freeze dryer, which comprises a purified water pipeline. A heat exchange device is additionally installed on the purified water pipeline. The heat exchange device comprises a steam generator connected to a steam input pipeline which is connected to the heat exchange device. A steam output pipeline is arranged on the other side of the heat exchange device. The heat exchange device is a shell pipe type heat exchange device in which the purified water pipeline is coiled. The purified water heat exchange device for defrosting of the freeze dryer has the advantages that after the structure is adopted, the purified water is used for defrosting after being warmed, many experiments improve that the utilization rate of the purified water required each time the freeze dryer defrosts is reduced by 60%, thereby greatly reducing usage amount of the purified water, saving cost of the purified water and meeting the requirements for energy s