Patent ID: 8906148

Claim:
A bubble generator comprising: a receptacle including a chamber formed therein, a housing engaged in said chamber of said receptacle, and including a compartment formed therein and defined by an outer peripheral wall, and a casing engaged into said compartment of said housing, and including an outer peripheral fence and a bottom plate, and including a bulge extended upwardly from said bottom plate of said casing for forming an inner peripheral channel between said bulge and said outer peripheral fence, and including a passage formed in said outer peripheral fence and communicating with said inner peripheral channel of said casing for allowing a fluid to flow into said inner peripheral channel of said casing and to flow out through said passage of said casing and to flow into said compartment of said housing, and said casing including a plurality of projections extended from said bulge and arranged around said bulge for agitating the fluid and for generating air bubbles in the fluid and said casing including a recess formed in bottom thereof.