Canister

摘要

A canister includes a casing (10) having a gas passage (C) which extends from a first passage end formed with a charge port (11) to let in fuel vapor and a purge port (12) to let out the fuel vapor, to a second passage end formed with an atmospheric air port (13) to let in air, and which includes a heat storing and adsorbing chamber (C1,C2) in which a granular adsorbing material (7,7') and a granular heat storing material (6) are held. The granular heat storing material (6) contains capsules (5) each including a phase-change material enclosed in a multilayer outer shell which includes an inner layer (2) of a hydrophobic resin and an outer layer (3) of a hydrophilic resin covering the inner layer.