Autonomous desalination apparatus with vacuum evaporation condensation tower

By designing an autonomous desalination device that utilizes solar heating and a vacuum evaporation condensation tower, efficient seawater desalination has been achieved in areas lacking electricity and heat. This solves the problems of low energy efficiency and complexity of existing equipment, and provides stable and environmentally friendly freshwater production.

CN122233470APending Publication Date: 2026-06-19HORTOON CO LTD
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Patent Information

Application Number
CN202511312406.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2024-12-18
Filing Date
2025-09-15
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

Existing desalination equipment is complex in design, has low energy efficiency, requires complex control and pumping systems, and is difficult to operate autonomously in areas lacking electricity and heat.

Method used

The system adopts an autonomous desalination equipment design, including a cylindrical vacuum evaporation and condensation tower, a freshwater storage tank, a power supply unit, and a control unit. It utilizes solar energy to heat the coolant circulation and achieves seawater desalination through vacuum evaporation and condensation chambers. It uses gravity and passive gas emission to reduce pumping requirements and simplify control and maintenance.

Benefits of technology

It improves the energy efficiency and autonomous operation capability of the equipment, simplifies design and maintenance, reduces dependence on external energy, and ensures efficient freshwater production and environmental friendliness.

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Abstract

This invention relates to an autonomous desalination device, comprising a vacuum evaporation-condensation tower, a freshwater storage tank, a power supply, and a control unit. The evaporation-condensation tower includes an outer pipe and an inner pipe connected to an evaporation chamber. Inside the evaporation chamber is an expanded portion of the inner pipe and a heating radiator. The inlet and outlet of the heating radiator are connected to a coolant supply line and a coolant discharge line, respectively. The coolant moves along a closed loop consisting of a first circulation pump, a solar collector, the coolant supply line, the heating radiator, and the coolant discharge line. The coolant discharge line is constructed as two adjacent main lines, one partially passing through a first heat exchanger and the other partially passing through a second heat exchanger. The condensation chamber is located above the evaporation chamber. A cooling radiator is installed inside the condensation chamber, with its inlet and outlet connected to the coolant supply line and the coolant discharge line, respectively. The condensation chamber is connected to the freshwater storage tank via a freshwater discharge line passing through the first heat exchanger. The freshwater storage tank is connected to an ejector pump, which is connected to the condensation chamber.
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Citation Information

Patent Citations

  • Liquid purifying / distillation device

    EP0632737A1

  • System, method, and apparatus for water desalination

    US20160251236A1

  • A desalination apparatus with power generation

    WO1981002154A1