Engine exhaust heat recovery device for single screw expander

By employing a combined structure of spiral tube and flange connection and insulation components in the engine exhaust waste heat recovery device of a single screw expander, the problem of low waste heat recovery efficiency is solved, achieving efficient heat recovery and reducing heat loss.

CN224379933UActive Publication Date: 2026-06-19HENAN 3 ZHANG ENERGY INVESTMENT
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HENAN 3 ZHANG ENERGY INVESTMENT
Filing Date
2025-06-27
Publication Date
2026-06-19

AI Technical Summary

⚠Technical Problem

The exhaust heat of a single-screw expander is easily lost during the recovery process, resulting in low heat recovery efficiency. Gas flow affects heating efficiency, and the single-tube heat exchange efficiency is limited.

⚗Method used

Design a device comprising a heating component, a shell component, an insulation component, and an exhaust component. The device is connected to a flange via a spiral tube to form a combined structure. Multiple sets of exhaust pipes and inlet pipes are provided to increase the heat exchange area. An insulation component and an insulation jacket are provided on the outside to reduce heat loss.

🎯Benefits of technology

It improves the heat exchange efficiency of waste heat recovery, reduces heat loss, is easy to operate and disassemble, and further protects against heat loss.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model relates to the field of waste heat recovery technology, specifically to a waste heat recovery device for engine exhaust of a single-screw expander, comprising a heating component, a shell component, a heat insulation component, an exhaust component, and a heat insulation sleeve. The exhaust component is located outside the heating component, and the heat insulation component and the exhaust component are located outside the heat insulation component and the heat insulation sleeve. The shell component is located outside the heat insulation component and the heat insulation sleeve. The heating component consists of a heating tank, a first upper cover, a liquid inlet, and a liquid outlet. The shell component consists of a shell, a second upper cover, and a connecting pipe, with the second upper cover connected to the upper end of the shell. Connecting pipes are connected to the upper and lower parts of one side of the shell. The heat insulation component consists of multiple sets of spliced ​​sleeves, with multiple sets of limiting grooves inside each spliced ​​sleeve. The exhaust component consists of an inlet pipe, a spiral pipe, and an outlet pipe, with an inlet pipe connected to the upper part of the spiral pipe and an outlet pipe connected to the lower part of the spiral pipe.
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