Seawater desalination device

A seawater desalination device, comprising:

• a seawater reservoir for holding seawater, said seawater reservoir having a bottom wall;
• an evaporator adapted for evaporating the seawater held in said seawater reservoir into water vapor;
• a plurality of osmosis membrane modules installed in said seawater reservoir and spaced above said bottom wall of said seawater reservoir at a distance, each said osmosis membrane comprising at least one membrane having a plurality of apertures for the passing of the water vapor evaporated by said evaporator, each of said osmosis membrane provided at least a water vapor accumulation chamber, and a suction pipe connected to said water vapor accumulation chamber;
• and
• a pump unit having a pipe connected to the suction pipe of each said osmosis membrane module and adapted for drawing water vapor out of the water vapor accumulation chamber of each said osmosis membrane module.