The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 31, 2022
Filed:
Jun. 12, 2019
Nuctech Company Limited, Beijing, CN;
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, Beijing, CN;
Qiufeng Ma, Beijing, CN;
Qi Mao, Beijing, CN;
Nan Bai, Beijing, CN;
Nuctech Company Limited, Beijing, CN;
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.