CPC A24F 40/95 (2020.01) [A24F 40/10 (2020.01); A24F 40/42 (2020.01); A24F 40/50 (2020.01)] | 15 Claims |
1. A gas adjusting assembly, comprising:
a bracket, provided with a first gas inlet; and
a gas adjusting belt, comprising:
a flexible belt body, surrounding a periphery of the bracket, wherein a first surface of the flexible belt body is provided with a plurality of protrusions, each of the plurality of protrusions comprises a surface away from the flexible belt body, and the surface of each of the plurality of protrusions abuts against a peripheral wall of the bracket; and
a second gas inlet, disposed through the flexible belt body, the second gas inlet and the first gas inlet being set in a one-to-one correspondence; the flexible belt body being configured to slide relative to the bracket; and the peripheral wall of the bracket is a rectangular peripheral wall, and the flexible belt body surrounds the rectangular peripheral wall.
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