FINE AIR BUBBLE GENERATING NOZZLE AND DEVICE PROVIDED WITH THE SAME

• Main Authors: OTA YOSHIHARU, TANIGAWA YOSHINOBU, YAMAGUCHI MASAYASU, UMETANI MASAAKI, YOKUMOTO TAKAO
• Format: Patent
• Language: English
• Published: 26.11.2009
• Subjects: AGRICULTURE; ANIMAL HUSBANDRY; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; ATOMISING APPARATUS; BASIC ELECTRIC ELEMENTS; CARE OF BIRDS, FISHES, INSECTS; CHEMISTRY; CLEANING; CLEANING IN GENERAL; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; FISHING; FORESTRY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; HUMAN NECESSITIES; HUNTING; METALLURGY; MIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING; NEW BREEDS OF ANIMALS; NOZZLES; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; PREVENTION OF FOULING IN GENERAL; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; SEMICONDUCTOR DEVICES; SPRAYING APPARATUS; SPRAYING OR ATOMISING IN GENERAL; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSPORTING; TRAPPING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

PROBLEM TO BE SOLVED: To provide a nozzle which has a simple constitution and can produce a water flow containing fine air bubbles in a wide angular range without deteriorating the current speed or the colliding force, and a device provided with the same. SOLUTION: The air bubble generating nozzle comprises a liquid channel forming a venturi tube (including a minimum channel part 4 in which the channel width is squeezed from the upstream of the nozzle body 1 toward a squirt hole 6 of the end, and an expanded channel part 5 in which the channel width expands downstream of the minimum channel part), gas flow paths 7, 8 combining with the minimum channel part, and a guide wall 9 extending in a front direction of the nozzle body 1, curving parabolically toward the central axis of the squirt hole, and guiding a fluid from the squirt hole at a wide angle. The guide surface 10 of the guide wall is curved in a U shape in cross section in a width direction. COPYRIGHT: (C)2010,JPO&INPIT