Pulsed sampling-based ion mobility spectrometer and sniffer

US11346807B2 · kind B2 · utility

Assignee

• NUCTECH COMPANY LIMITED · CN

Inventors

• Qingjun Zhang · Beijing, CN
• Yuanjing Li · Beijing, CN
• Zhiqiang Chen · Beijing, CN
• Jianmin Li · Beijing, CN
• Yinong Liu · Beijing, CN
• Yaohong Liu · Beijing, CN
• Lili Yan · Beijing, CN
• Biao Cao · Beijing, CN
• Weiping Zhu · Beijing, CN
• Ge Li · Tangxia, CN
• Qiufeng Ma · Beijing, CN
• Qi Mao · Shanghai, CN
• Nan BAI · Beijing, CN

Key dates

• Filing date: Jun 12, 2019
• Grant date: May 31, 2022
• Expiry date: Mar 8, 2040

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N1/2247
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

There are provided an ion mobility spectrometer and a sniffer. The ion mobility spectrometer includes: an ion migration tube; a sampling gas path having a sampling device configured to temporarily store a sample gas collected by a sampling head in a sampling pipe; a sample introduction gas path having two ends in communication with the gas inlet and outlet of the ion migration tube respectively, and configured to introduce a carrier gas within the ion migration tube into the sampling pipe and to carry a sample gas temporarily stored in the sampling pipe into the ion migration tube; and a valve assembly configured to only allow gas to flow from the sampling device to the sampling pipe in a sampling state, and to only allow gas to flow from the ion migration tube through the sampling pipe back to the ion migration tube in a sample introduction state.