CPC B01D 46/0006 (2013.01) [B01D 46/16 (2013.01); B01D 46/4227 (2013.01); F24F 13/28 (2013.01); B01D 2271/02 (2013.01); B01D 2279/35 (2013.01); B01D 2279/50 (2013.01)] | 17 Claims |
1. A ventilation assembly, comprising:
a volute, a surface of the volute being provided with a mounting port;
a filter assembly arranged in the mounting port or in a portion of the volute adjacent to the mounting port, and configured to filter air; and
a sealing member arranged with the mounting port or with the portion of the volute adjacent to the mounting port, and configured to seal a gap between the filter assembly and the mounting port,
wherein a positioning groove is provided at the mounting port of the volute along a periphery of the mounting port, and the sealing member is arranged in the positioning groove,
wherein a difference between inner and outer radiuses of the sealing member is slightly greater than a distance between a top and a bottom of the positioning groove, so that the sealing member is in an interference fit with the filter assembly.
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