MICROBUBBLE GENERATION DEVICE, MICROBUBBLE GENERATION METHOD, AND SHOWER APPARATUS AND OIL-WATER SEPARATION APPARATUS COMPRISING SAID MICROBUBBLE GENERATION DEVICE

摘要

Provided are: a microbubble generation device, which utilizes a swirling flow generated by jetting of a pressurized liquid and which has excellent handleability, operability and durability as a result of a simplified configuration and structure; a microbubble generation method capable of generating large amounts of bubbles; and a shower apparatus and an oil-water separation apparatus that comprise said microbubble generation device. This microbubble generation device comprises: a cylindrical or conical pipe with a gas-liquid swirling chamber therein; a gas-liquid jetting port provided on one end of the cylindrical or conical pipe; and a liquid supply pipe and gas supply cylinder, which are provided with respective introduction ports for introducing a liquid and a gas into the gas-liquid swirling chamber. For the gas-liquid jetting port, multiple small cylindrical through holes are provided in the wall of a closed end at one end of the cylindrical or conical pipe, or multiple small concavities that have circular cross-sections and have at least a semicircular circumferential length are provided on the circumferential surface of the inner wall of an open end at one end of the cylindrical or conical pipe.