Three-period minimal surface phase change heat exchanger for on-board intermittent high heat flux density surface heat dissipation

By introducing a three-period minimal surface structure and a cooperative perturbation structure into the phase change heat exchanger, the heat exchange process of the three fluids is optimized, solving the thermal management problem of high heat flux density and pulsed operating frequency of airborne equipment, and achieving the effect of rapid heat storage and release.

CN120667962BActive Publication Date: 2026-06-02DALIAN UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
DALIAN UNIV OF TECH
Filing Date
2025-06-12
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Existing three-fluid phase change heat exchangers lack synergistic optimization of the three-layer flow space in airborne equipment, resulting in insufficient heat storage and release rates, making it difficult to effectively meet the high heat flux density and pulsed operating frequency requirements of airborne equipment.

Method used

The phase change heat exchanger, which adopts a three-period minimal curved surface structure and a cooperative perturbation structure design, constructs a continuous and efficient heat conduction path by encapsulating phase change materials in the hot fluid channel and setting a perturbation skeleton in the cold fluid channel that is cooperatively matched with the hot side structure, thereby improving heat exchange efficiency.

Benefits of technology

It significantly improves the heat exchange area and efficiency between the heat fluid and the phase change material, enabling rapid heat absorption and release of the phase change material, and is suitable for efficient heat dissipation of intermittent high heat flux density surfaces on airborne surfaces.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application provides a three-period minimal surface phase change heat exchanger for on-board intermittent high heat flow density surface heat dissipation, and belongs to the technical field of phase change heat storage. Technical points include: flow channels are divided into hot fluid flow channels allowing hot fluid to pass through and hindering cold fluid flow and cold fluid flow channels allowing cold fluid to pass through and hindering hot fluid flow, the hot fluid flow channels and the cold fluid flow channels are arranged alternately and intersected in direction, forming effective heat exchange channels. A three-period minimal surface structure is used to encapsulate phase change materials in the hot fluid flow channels, the structure is used as a primary heat exchange surface, rapid heat exchange between the phase change materials and the hot fluid is promoted, and heat storage rate is improved; a cooperative disturbance structure matched with the three-period minimal surface is arranged in the cold fluid flow channels, heat exchange between the phase change materials and the cold fluid is further promoted, and heat dissipation rate is improved. The application has the advantages of compact structure and high heat storage / dissipation rate, and effectively solves the needs of high-power equipment in the process of instantaneous heat storage and dissipation.
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