The invention discloses a device for extracting water from air. The device is characterized in that the device comprises an inner cylinder
assembly, an outer cylinder
assembly, a heat dissipation and diversion
assembly and a water collecting assembly, the inner cylinder assembly is located inside the outer cylinder assembly, the inner wall of the inner cylinder assembly is a
metal polygonal cylinder, an inner side thermoelectric
chip attaches to the corresponding outer wall of the
metal polygonal cylinder, the inner wall of the outer cylinder assembly is a
metal cylinder, an outer side thermoelectric
chip attaches to the outer wall of the
metal cylinder, the inner cylinder assembly and the outer cylinder assembly are connected through the heat dissipation and diversion assembly, and the bottom of the outer cylinder assembly is connected with the water collecting assembly. The inner side thermoelectric
chip of the inner cylinder and the outer side thermoelectric chip of the outer cylinder are utilized to condense
water vapor in air for water taking, the heat dissipation and diversion assembly makes the air fully in contact with a condensation face, an air exhausting
pipe is utilized to perform
waste heat recovery, and the condensing efficiency is improved. The device has the advantages of being convenient to carry, high in efficiency and compact in structure, saving energy and the like, facilitates relieving of the
fresh water resource shortage problem and has practicability and convenience.