A bubble generator.

摘要

A bubble generator is comprised of a bubble plate (1) and an adjustable plate (2) slidably coupled to each other and provided the former with parallel rows of small bubble holes (11) and the latter with rows of parallel small slots (21 a), rows of large slots (21b), and rows of large bubble holes (23). Mutual sliding between the plates allows three different modes of bubble generation at the user's free choice.