Abstract:
PROBLEM TO BE SOLVED: To provide a nozzle for mixing and spraying without clogging three kinds of fluids consisting of two kinds of liquids and a gas which generate a solid when mixed. SOLUTION: The nozzle 10 is used for mixing and spraying the three kinds of fluids consisting of a gas A, a first liquid N and a second liquid W, while the liquid N and W generate the solid when mixed. The nozzle 10 is provided with three passages R1, R2, R3 to which the first liquid N, the second liquid W and the gas A are supplied through separate piping, and is also provided with a section for mixing the gas A and the second liquid W, a first nozzle hole 21 for spraying the first liquid, and a second nozzle hole 22 for spraying the mixed fluid consisting of the second liquid W and the gas A. The first liquid N and the second liquid W are not mixed until the liquids reach the nozzle holes 21, 22 and the fluids sprayed from the first nozzle hole 21 and the second nozzle hole 22 are mixed externally to generate spray. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a two-fluid nozzle in which the beating power of spray is enhanced in a broad and thin spray-pattern. SOLUTION: A closing face orthogonal to the axis of a flow path is provided at the jet tip-end in the air-liquid mixture flow path. One groove is formed in the diametric direction on the closing face. On the jet end-face on the outside of the closing face, an elliptic nozzle hole orthogonal to the groove is provided so that the minor-axis side of the jet hole and the groove on the closing face fall in the same direction. The jet hole is tapered to the inside face, and an outlet hole is provided in communication with the groove in the center of the tapered part. A nozzle tip is attached to the jet tip-end on the jet side of the nozzle body in which the air-liquid mixture flow-path is provided along the axis. The inside face of the nozzle tip serves as the closing face and the outside face thereof serves as the jet end-face. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To prevent a gas from flowing backward into a liquid flow path even when an amount of a liquid is decreased in a gas-liquid mixing apparatus by feeding the liquid into a gas-liquid mixing part in a main flow path in which the gas flows, from the side face. SOLUTION: The gas-liquid mixing apparatus comprises the main flow path through which the gas is fed, and a liquid feeding passage opened on a peripheral face of the gas-liquid mixing part provided in the main flow path, and makes the liquid fed from the liquid feeding passage collide with the gas flowing in the main flow path from the side face. In this apparatus, the liquid feeding passage is continuously provided with at least the first orifice opening on the peripheral face of the gas-liquid mixing part, a flow path with an expanded diameter connected to the upstream of the first orifice, and the second orifice connected to the upstream of the flow path with the expanded diameter between a base end flow path connected to a liquid feeding pipe and the opening on the peripheral face of the gas-liquid mixing part to constitute a multi-stage orifice structure. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To widen the jetting angle of a nozzle, which has a wide jetting angle in the width direction, also in the thickness direction perpendicular to the width direction. SOLUTION: A flow channel is formed from a flow inlet at one end toward the jetting side at the other end along the center axial line of a nozzle main body and the tip end of the flow channel in the jetting side is made to be an arc-like main hole. On the other hand, a slit in the diameter direction is formed in the flat face of the tip end of the nozzle main body in the jetting side and the slit is made slanting in the depth direction toward the center from both ends in the longitudinal direction and the center part of the slit is communicated with the tip end of the main hole so as to form a main jetting hole with long width. Further, a deflector parallel to the slit direction is installed in the base part of the main hole in such a manner that the deflector transversely crosses a flow channel on the opposite to the main jetting hole, so that a fluid flowing in from the flow inlet side comes into collision against the deflector and is divided in the thickness direction perpendicular to the width direction of the main jetting hole and thus the jetting angle in the thickness direction is widened. COPYRIGHT: (C)2004,JPO