Cabin air filtration apparatus and components

A gas purification device comprises a filter cartridge having a filter media (220) and at least a first filter terminal (232), a conduit comprising a filter support wherein the filter support removably supports the filter cartridge in a conduit volume between a gas inlet and a gas outlet, and a gas ionizer (300) that ionizes gas from the filter cartridge if the first conduit terminal (131) is in contact with the first filter terminal. When the filter cartridge is inserted into the filter support and the first ionization terminal (331) is electrically connected to the first conduit terminal via the first filter terminal, the gas ionizer (300) provides enhanced intrinsic safety with the filter cartridge inserted into the filter support to prevent malfunctions, ozone release and maintenance personnel electric shock. When the filter cartridge is removed, the electrical connection between the gas ionizer (300) and the conduit terminal is interrupted. 一种气体净化装置包括滤芯、管道和气体电离器(300)，滤芯具有过滤介质(220)和至少第一过滤端子(232)，管道包括过滤器支撑