Device for heat recovery from irregularly outflowing waste waters

The thermally insulated vessel with a diffuser and heat exchanger design stabilizes temperature gradients in irregular waste water inflows, enhancing heat recovery efficiency by evenly distributing and slowing down the inflow, addressing inefficiencies in existing systems.

WO2026119328A1 Publication Date: 2026-06-11AKIRE SRO
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Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
AKIRE SRO
Filing Date
2025-12-01
Publication Date
2026-06-11

AI Technical Summary

⚠Technical Problem

Existing heat recovery systems struggle to efficiently utilize the thermal energy from waste waters that flow irregularly, intermittently, and in varying quantities, leading to inefficient heat transfer due to continuous mixing of temperature layers and unpredictable inflow rates.

⚗Method used

A thermally insulated vessel with a waste water inlet at the top, a drain pipe with inlet at the bottom and outlet above, and a horizontally placed diffuser with a circular segment shape to stabilize the inflow, combined with a heat exchanger for efficient heat transfer from waste water to clean water.

🎯Benefits of technology

Stabilizes temperature gradients in the waste water, ensuring consistent and efficient heat recovery by slowing down the inflow and distributing it evenly, thereby improving the efficiency of heat transfer.

✦ Generated by Eureka AI based on patent content.

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Abstract

Device for heat recovery from irregularly outflowing waste waters, which has a thermally insulated vessel for waste water accumulation, waste water inlet (7) arranged in the upper part of the vessel, waste water drain off (8) consisting of a pipe with inlet near the bottom of the vessel and outlet arranged in the upper part of the vessel, but lower than the waste water inlet (7), wherein a heat exchanger (5) placed inside the thermally insulated vessel has an inlet (10) of clean water for heating and outlet (9) for heated clean water is, according to this invention, characterised in that above the waste water surface in the thermally insulated vessel, under the waste water inlet (7) into the vessel, a diffuser (11) is placed, which includes horizontal panel (11.1) with holes (11.2) having a shape including a segment of a circle, with height (11.4) equal to at least one quarter of the diameter of the vessel, which is placed by the middle (11.5) of the arc under the waste water inlet (7) into the vessel.
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