Abstract: A liquid atomization device includes a first gas spray unit and a second gas spray unit; a liquid outflow unit for flowing out liquid; a gas-liquid mixing area where a gas flow sprayed from the first gas spray unit, a gas flow sprayed from the second gas spray unit, and liquid which flows out from the liquid outflow unit are made to collide against each other to atomize the liquid; a projection formed to project out of the device such that its cross section projects in a convex manner, the gas-liquid mixing area being formed in the projection; a spray slit formed in the projection along a wide angle spray direction of mist produced by the gas-liquid mixing area; and a restriction portion formed near a bottom of the spray slit such that the restriction portion inclines in the wide angle spray direction of the mist.

Abstract: A liquid atomization device includes a nozzle body. The nozzle body includes: a first gas spray portion and a second gas spray portion for spraying two gas flows; a liquid passage having a passage through which liquid flows by formation of the two gas flows sprayed by the first gas spray portion and the second gas spray portion; a gas-liquid mixture area where the gas flow sprayed from the first gas spray portion and the gas flow sprayed from the second gas spray portion are made to collide against liquid which flows from the liquid passage to atomize the liquid; and a spray outlet for spraying mist atomized in the gas-liquid mixture area to outside.

Abstract: A liquid atomizing device includes a first gas injection portion and a second gas injection portion for making two gas flows collide against each other; a liquid outflow portion from which liquid flows out; a gas-liquid mixing area portion where a gas flow injected from the first gas injection portion, a gas flow injected from the second gas injection portion and liquid which flows out from the liquid outflow portion are made to collide against each other to atomize the liquid; an injection outlet portion in which the gas-liquid mixing area portion is formed; and a slit portion formed in a tip end surface of the injection outlet portion along a direction in which the mist is injected widely.

Abstract: A liquid atomizing method in which a collision portion formed by making at least two gases collide with each other, or a portion including the collision portion, and liquid are made to collide with each other to atomize the liquid. A liquid atomizing device includes at least two gas injection portions from which gases are injected, and a liquid injection portion from which liquid is injected, a collision portion formed by making gases injected from the at least two gas injection portions collide with each other or a portion including the collision portion, and liquid injected from the liquid injection portion are made to collide with each other to atomize the liquid.

Abstract: There is provided a nozzle information search system, wherein a data base is constructed based on a nozzle catalog in a server system installed on a network, and the nozzle user can retrieve the nozzle information by accessing the server system through a data base search means, characterized in that the server system includes: a first nozzle model number search means to extract the nozzle model number information from the data base by inputting the search criteria of a first level; a second nozzle model number search means capable of extracting, from the data base, the nozzle model number information narrowed more than the first nozzle model number search by inputting more detailed search criteria than the first level; a nozzle specification search means to search the data base for the nozzle specification information by inputting the nozzle model number information; and similar nozzle search means capable of extracting the nozzle model number information of a nozzle having similar specification from the data

Abstract: A nozzle information retrieval system comprising a server with a database (20) for retrieving nozzle information and a client for accessing this server via a communication network. The database (20) has nozzle specification information and nozzle model number information registered by relation. Nozzle information is input from the display screen of the client and transmitted to the server, so that the server retrieves the database (20) to extract the nozzle model number information matching with input nozzle information and sends the extracted nozzle model number information back to the client to display retrieved nozzle model type number information on the display screen of the client.

Abstract: A fluid discharge nozzle includes a nozzle tip defining a spout for jetting fluid at a jet angle. Wall surfaces surround the spout and extend downstream with respect to a jetting direction. The wall surfaces contact free surfaces of the fluid jetting out of the spout. Fluid jets produce negative pressure regions inwardly of a forward end surface of the nozzle tip.

Abstract: The present invention relates to a descaling nozzle for removing scales from a metal surface by causing a high-pressure liquid to collide with the metal surface. In the descaling nozzle, the nozzle body includes a concave section formed at a forward end thereof with respect to a liquid jetting direction and having a diameter reducing as it extends downstream with respect to the liquid jetting direction. The forward end has an annular shape integrally surrounding an entire outer circumference of said concave section. The orifice has an outlet opening at a bottom of said concave section around an entire circumference thereof. Thus, the orifice peripheries have high wear resistance against ultrahigh-pressure water and have durability, and can be effectively prevented from damage.

Abstract: A fluid jet nozzle apparatus includes a fluid passage communicated with a fluid jet opening, a valve member for opening/closing the fluid passage, and an elastic member for biasing and moving the valve member to a passage closing position. The valve member includes a pressure receiving face for moving the valve member to a passage opening position against the biasing force of the elastic member in response to application thereto of a fluid pressure exceeding a predetermined pressure. The valve member and the elastic member are interposed between an entrance opening of the fluid passage and a strainer surrounding the entrance opening.

Abstract: A liquid-spraying nozzle has a bottom-equipped nozzle body which includes an inner peripheral face formed at an inner bottom portion of the body and coaxial or substantially coaxial with a nozzle axis and a laterally-elongated orifice defined normal or substantially normal to the nozzle axis when viewed from the direction of the nozzle axis. The invention is characterized by a large-diameter peripheral face formed upstream of the inner peripheral face and having a larger inner diameter than the inner peripheral face, a stepped portion formed between the inner peripheral face and the large-diameter peripheral face, and a pair of elongated grooves disposed along the nozzle axis and at positions opposing to each other across a longitudinal center of the orifice of the inner peripheral face. Each elongated groove has a downstream end relative to the spraying direction with an arcuate cross section extending to the vicinity of the orifice and an upstream end opened at the stepped portion.

Abstract: A descaling nozzle having a straightening passage incorporating a straightener, a constricted passage communicating with a downstream side of the straightening passage and a jetting passage communicating with a dowstream side of the constricted passage. The jetting passage has a jetting opening at a bottom of a groove defined at a top end face thereof in the direction of diameter of the same. Axes of the straightening, constricted and jetting passages are aligned on the same straight line. The straightening passage has the same radius through its whole or substantially whole length and the constricted passage has a radius tapering from its upstream end to its downstream end or to a vicinity of the same.