Aerator apparatus and air diffusion apparatus comprising same

An aerator comprising:

• a housing having an inner cavity and comprising at least one side wall and an upper surface connected to the at least one side wall;
• a first partition formed in the inner cavity and extending from a first lower end to a first upper end to define a first cavity and a second cavity;
• and
• a second partition formed between the first partition and a first side wall in the inner cavity and extending from a second upper end to a second lower end to form a first chamber and a second chamber in the second cavity,
• wherein the housing comprises an outlet communicating with the second chamber, the first upper end of the first partition is spaced apart from the upper surface to form a first opening such that the first cavity communicates with the second cavity through the first opening, the at least one side wall comprises the first side wall and a second side wall opposite the first side wall, the first lower end of the first partition is connected to the first side wall through a lower surface, the second side wall is connected to the upper surface through a first connecting surface, the second partition is connected to the upper surface through a second connecting surface, the first chamber and the second chamber communicate with each other under the second lower end of the second partition, and at least one of the first connecting surface and the second connecting surface is a planar surface, a curved surface, or a polygonal surface.