Ocean temperature difference energy seawater desalination device

According to the ocean temperature difference energy seawater desalination device, deep cold seawater enters a water inlet impeller under the condition that the pressure difference between the two ends is large, drives the water inlet impeller to rotate to do work and then enters a condensation chamber, after the temperature of water vapor outside a cooling pipe is increased, the water vapor enters a heat regenerator to be heated by a hot end, the temperature is further increased, and then the water vapor enters a steam generation chamber; after a large amount of water vapor is evaporated, the mass of the water vapor is reduced, the concentration of the water vapor is increased, and the water vapor enters the drainage impeller after flowing through the heat regenerator and is driven by the drainage impeller to be discharged out of the device; and steam evaporated from the deep seawater in the steam generation chamber is cooled and condensed into fresh water by cold seawater which just enters the condensation