Protective casing for underground heat exchanger of ground source heat pump

By designing a protective sleeve for the underground heat exchanger of the ground source heat pump, the problem of leakage at the weld joint was solved, the protective performance of the connection parts was enhanced, and the stability and safety of the system were ensured.

CN224434740UActive Publication Date: 2026-06-30JILIN BILIAN NEW ENERGY TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JILIN BILIAN NEW ENERGY TECH CO LTD
Filing Date
2025-07-07
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

The welded joints of underground heat exchangers in ground source heat pumps are prone to leakage, which affects the heat exchange effect and system stability. Furthermore, repairs are complex, and the corrosion resistance and vibration resistance are insufficient.

Method used

A protective sleeve for the underground heat exchanger of the ground source heat pump was designed, including a docking sleeve and a fixed sleeve, which cover the connection parts and are securely installed by a cross frame, side frame, fixing plate and T-shaped mounting bracket. Combined with sealing strips and sealing filler rings, the protective performance is enhanced.

Benefits of technology

It significantly improves the protective performance of the connection parts, prevents corrosion and damage, ensures stable operation and long-term durability of the system, and improves sealing performance and safety.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224434740U_ABST
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Abstract

This utility model discloses a protective sleeve for an underground heat exchanger of a ground source heat pump, belonging to the field of heat exchanger protective sleeves. The buried heat exchanger, secondary pipes, and intermediate connecting parts are equipped with a connecting sleeve and a fixed sleeve. The fixed sleeve and connecting sleeve cover the connection between the secondary pipes and the buried heat exchanger, improving the protection performance at this point. A horizontal frame is provided in the middle of the fixed sleeve and the connecting sleeve, and a side frame is provided at the outer opening of the fixed sleeve and the connecting sleeve. A fixing plate is provided on the side wall of the fixed sleeve. The sleeve enhances the protection of the connection between the heat exchanger and the pipes, preventing corrosion damage and ensuring system stability and durability. The sleeve is securely installed through the design of the horizontal frame and side frame, improving system stability and safety. The sealing strip at the sleeve joint prevents liquid or gas leakage, improving the system's sealing performance. The sealing packing ring further improves the sealing effect, and high-temperature resistant and corrosion-resistant materials are selected to improve system stability and reliability.
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