MASS SPECTROMETER

WIPO Patent Application WO/2023/162203

A1

The present invention provides a mass spectrometer in which an ion source unit for ionizing a liquid sample has: an ion source housing (131); an ion source cover (120) that accommodates said ion source housing (131); ion source cases (110, 216) that accommodate the ion source cover (120); probes (141, 142) that penetrate the ion source cover and the ion source housing and spray the liquid sample into the ion source housing; a heated gas nozzle (150) via which gas heated by a heater (155) provided to the body is discharged into the ion source housing, said heated gas nozzle (150) having a hollow body (151) that is positioned between the ion source cover and the ion source housing; ion source case intake ports (113, 114) and an ion source case exhaust port (212) provided on the ion source cases; ion source cover intake ports (121, 122) and an ion source cover exhaust port (124) provided on the ion source cover; a first exhaust fan (123) with which air having flowed in via the ion source cover intake ports and passed through the inside of the ion source cover is expelled via the ion source cover exhaust port; and a second exhaust fan (214) with which air expelled via the ion source cover exhaust port into the ion source case and air that has flowed in via the ion source case intake ports and passed through the inside of the ion source case is expelled to the exterior via the ion source case exhaust port.

KUDO TOMOYA (JP)
HOSOO KOHEI (JP)

PCT/JP2022/008217

August 31, 2023

February 28, 2022

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SHIMADZU CORP (JP)

H01J49/16

JP2021089227A	2021-06-10
JPH0676789A	1994-03-18

KYOTO INTERNATIONAL PATENT LAW OFFICE (JP)

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