A gas enrichment device and method based on semiconductor refrigeration plates

The gas enrichment device, which uses an alternating working mode of semiconductor cooling chip and dual adsorption tube, solves the problem of long cooling time in traditional gas enrichment methods, realizes the continuity and high efficiency of the gas enrichment process, and improves detection efficiency and result accuracy.

CN122306531APending Publication Date: 2026-06-30HEFEI INSTITUTE OF PHYSICAL SCIENCE CHINESE ACADEMY OF SCIENCES
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HEFEI INSTITUTE OF PHYSICAL SCIENCE CHINESE ACADEMY OF SCIENCES
Filing Date
2026-04-29
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Traditional online gas enrichment methods are time-consuming during the cooling process, resulting in low sampling efficiency and the inability to achieve continuous sampling.

Method used

A gas enrichment device based on a semiconductor cooling chip is adopted. By utilizing the bidirectional temperature control characteristics of the cooling chip, and through the alternating working mode of two independent adsorption tubes, the continuous enrichment and desorption of gas is achieved. Combined with the control of solenoid valves and fans, the orderly delivery and mixing of gas is ensured.

Benefits of technology

This achieves continuity and efficiency in the gas enrichment process, improves detection efficiency, avoids energy waste and gas residue, and ensures the accuracy of detection results.

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Abstract

This invention belongs to the field of gas enrichment technology and provides a gas enrichment device and method based on a semiconductor cooling chip. The device includes a heat-insulating shell, inside which a cooling chip, a first heat sink, and a second heat sink are installed. A first adsorption tube and a second adsorption tube are respectively installed on both sides of the cooling chip. A sample source, a carrier gas source, and an analysis system are also provided. During operation, the cooling chip enriches the gas on its cooled side, while the heated side performs desorption. Then, the semiconductor electrodes are reversed, and the cooling and heating areas are interchanged. This design fully utilizes the effects of both sides of the cooling chip, avoiding energy waste. Furthermore, the first and second adsorption tubes operate independently without interference, ensuring a continuous and uninterrupted gas enrichment and desorption process. This significantly improves detection efficiency and reduces the overall process time.
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