Patent ID: 9097218
Filing Date: 2015-08-04
Classification: B01D,F02M

Abstract:
1. A canister in which a plurality of adsorbent chambers filled with an adsorbent are connected in order, so as to form a U-turn-shaped flow passage and a charge port and a purge port are provided at one end of the flow passage and an air port is provided at the other end of the flow passage, the canister comprising: a communication chamber through which both end portions of adjacent two adsorbent chambers communicate with each other, the communication chamber being formed by a part of a canister casing; a middle chamber that is formed at the end portion of one of the adjacent two adsorbent chambers which is positioned at a downstream side, in a direction of an air flow from the air port to the purge port, of the communication chamber, the middle chamber being defined between the adsorbent of the one adsorbent chamber and the communication chamber and being connected to the communication chamber through a communication hole whose opening area is smaller than a cross-sectional area of the flow passage of the middle chamber; a baffle plate that is set in the middle chamber with the baffle plate facing to the communication hole so that an incoming air flow from the communication hole strikes against the baffle plate and diffuses in the middle chamber; and a tubular portion that protrudes in the communication chamber from an opening edge of the communication hole along a longitudinal direction of the one adsorbent chamber.