Regenerative desiccant air dryer

B - Operations – Transporting – 01 – D

Patent

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Details

B01D 53/26 (2006.01) B60T 17/00 (2006.01) F26B 21/08 (2006.01)

Patent

CA 2203305

A gas drying canister housing for a desiccant canister in a gas dryer system includes a main portion having an upper base and a lower portion having a lower base. A canister bore is defined between the upper and lower bases when the main and lower portions are fastened to each other. The main portion defines a supply port through which a stream of moisture-bearing gas is directed into the housing for passage through the desiccant canister during a drying mode of operation of the gas dryer system. The main portion also defines a delivery port through which a stream of dried gas is directed from the housing during the drying mode. The lower portion defines a purge port through the lower base through which a stream of remoisturized gas is expelled from the housing during a purge mode of operation of the gas dryer system. The upper base of the main portion features a sealing flange against which an outer rim portion of a top of the desiccant canister is seatable so as to make an air tight seal therebetween. The gas drying canister housing further includes a mechanism for aligning and securably retaining the desiccant canister within the housing such that when the desiccant canister is so aligned and securably retained the top of the desiccant canister aligns with and seals against the sealing flange and communication between the supply and delivery ports of the housing is possible only through the desiccant canister.

Bâti de récipient de dessiccation dans un système de séchage du gaz comprenant une partie principale ayant une base supérieure, ainsi qu'une partie inférieure ayant une base inférieure. Une ouverture de récipient est formée entre les bases supérieure et inférieure lorsque les parties principale et inférieure sont fixées ensemble. La partie principale forme un orifice d'admission par lequel un flux de gaz contenant de l'humidité est acheminé dans le bâti, afin d'assurer un passage à travers le récipient de dessiccation durant l'opération de séchage du système de séchage au gaz. La partie principale forme de plus un orifice de refoulement par lequel un flux de gaz sec est acheminé à partir du bâti durant l'opération de séchage. La partie inférieure forme un orifice de purge à travers la base inférieure, par lequel un flux de gaz ré-humidifié est évacué du bâti durant l'opération de purge du système de séchage. La base supérieure de la partie principale comporte un rebord d'étanchéité sur lequel est logé un bord extérieur du haut du récipient de dessiccation pour former une fermeture hermétique. Le bâti du récipient de séchage du gaz comprend aussi un mécanisme d'alignement et de maintien solide du récipient de dessiccation à l'intérieur du bâti, afin que le haut du récipient de dessiccation s'aligne avec le rebord d'étanchéité et y soit fixé, et pour qu'un écoulement entre l'orifice d'admission et l'orifice de refoulement du bâti ne soit possible qu'à travers le récipient de dessiccation.

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