Noise reduction structure for ventilation treatment device and ventilation treatment device

A ventilation-treatment device, wherein the ventilation-treatment device comprises a noise reducing structure, wherein the noise reducing structure comprises a first micropore plate, the first micropore plate is provided with a first plate surface and a second plate surface which are opposite to each other, the first plate surface is configured for forming a first chamber, the second plate surface is for forming an air passage, to allow gas inside the air passage to flow along the second plate surface, and the first micropore plate is provided with a plurality of first micro-through holes communicate with the first chamber and the air passage;

• wherein the ventilation-treatment device further comprises a ventilating tube assembly and a fan, a gas-inlet port of the ventilating tube assembly communicates with a gas outlet of the fan, and the air passage communicates with a gas inlet of the fan;
• and
• the ventilation-treatment device further comprises a housing assembly, the housing assembly comprises a cavity, and a gas inlet and a gas outlet that communicate with the cavity, the noise reducing structure, the ventilating tube assembly and the fan are disposed inside the cavity, the air passage communicates with the gas inlet of the housing assembly and the gas inlet of the fan, and a gas-outlet port of the ventilating tube assembly communicates with the gas outlet of the housing assembly;
• and
• the housing assembly further comprises a middle housing and a lower housing which are configured to form the cavity, the middle housing detachably covers a top of the lower housing, a gas-inlet end wall of the middle housing is provided with a middle-housing gas inlet configured to communicate with the cavity, a gas-inlet end wall of the lower housing is provided with a lower-housing gas inlet configured to communicate with the cavity, and the middle-housing gas inlet and the lower-housing gas inlet form the gas inlet of the housing assembly together;
• and
• the ventilation-treatment device further comprises a decorating assembly, the decorating assembly is configured to encircle the housing assembly, and is provided with a gas inlet and a gas outlet that correspond to the gas inlet and the gas outlet of the housing assembly, the decorating assembly comprises a filtering member, and the filtering member is disposed at the gas inlet of the decorating assembly;
• wherein a chamber is formed between the gas-inlet end wall of the middle housing and the gas-inlet end wall of the lower housing and the filtering member, a dividing plate assembly is disposed inside the chamber, the dividing plate assembly is configured to partition the chamber into at least two areas, the gas-inlet end wall of the middle housing that is located in each of the at least two areas is disposed with the middle-housing gas inlet, and the gas-inlet end wall of the lower housing that is located in the at least two areas of the chamber is disposed with the lower-housing gas inlet;
• wherein, the middle-housing gas inlet and the lower-housing gas inlet are provided in either singular or plural.