Abstract: By homogeneously mixing a plurality of fluids, when mixing a gas with a liquid, it is possible to mix a large amount of gas into the liquid, so that large bubbles are not generated, and fine bubbles (in some cases, fine bubbles including microbubbles or ultra-fine bubbles) can be mixed into the liquid. A fluid mixing output apparatus of the present disclosure includes a housing and an internal structure accommodated in the housing. The housing is provided with a plurality of fluid supply ports for supplying at least a first fluid and a second fluid and a fluid outlet at its downstream end for outputting a plurality of fluids after mixing the plurality of fluids. The internal structure includes a first portion, a second portion, a third portion, and a fourth portion. The first portion includes a shaft portion and a vane spirally formed to generate a swirling flow in a fluid.

Abstract: Provided are an internal structure capable of generating fine bubbles without increasing a flow rate, a flow characteristic changing apparatus, and a utilization apparatus thereof. An internal structure which is accommodated in a housing and configured to change characteristics of a fluid with respect to the fluid includes a first internal structure and a second internal structure. The first internal structure has a flow characteristic providing portion having a structure of at least one hollow venturi tube. The second internal structure is in the form of a hollow shaft, accommodates at least a portion of the first internal structure inside the hollow shaft, and has a body portion having a plurality of protrusions formed on an outer surface thereof.

Abstract: A fluid supply apparatus according to an embodiment of the invention includes a housing and an internal structure which is housed in the hosing. The internal structure includes a shaft portion and a plurality of protrusions protruding from the outer circumferential surface of the shaft portion. A plurality of flow paths are formed between the plurality of protrusions, and a groove having a predetermined depth from the outer circumferential surface of the shaft portion is formed in each of at least a part of the plurality of flow paths.

Abstract: A fluid supply pipe comprises a tubular body and an internal structure. The tubular body has an inlet through which a fluid flows in and an outlet through which the fluid flows out, and is of a hollow shape having an inner wall surface of a circular cross section. The internal structure is a prismatic shaft having a plurality of lateral faces configured to be housed in and fixed to the tubular body. A plurality of pillars are arranged in a mesh pattern on the lateral faces. A space formed between the plurality of pillars between the lateral faces of the internal structure and the inner wall surface of the tubular body serves as fluid flow paths, and the fluid is given a flow characteristic by passing through the flow paths between the plurality of pillars while the fluid is supplied from the inlet and flows out of the outlet.

Abstract: A fluid supply pipe according to an embodiment of the invention includes a first internal structure, a second internal structure, and a pipe body configured to house the first internal structure and the second internal structure, and the pipe body has an inlet and an outlet. The first internal structure includes a head portion comprising a plurality of spiral vanes, and a body portion positioned downstream from the head portion and comprising a plurality of protrusions on its outer circumferential surface. The second internal structure formed in a hollow shaft shape includes a head portion comprising a plurality of spiral vanes, and a body portion positioned downstream from the head portion and comprising a plurality of protrusions on its outer circumferential surface. At least a part of the first internal structure is housed in the hollow of the second internal structure.

Abstract: An embodiment of the present invention provides a nozzle capable of discharging a fluid such as coolant around a predetermined area including a contact portion between a tool and a workpiece to concentrate the fluid on a target position or in a target direction. The nozzle includes an inlet through which a fluid is supplied, an outlet through which the fluid is discharged, and an interior space connecting the inlet and the outlet. A plate-shaped member having a cross section of a predetermined shape is disposed in the interior space to form a flow path of the fluid.

Abstract: A fluid supply pipe according to an embodiment of the invention includes a first internal structure, a second internal structure, and a pipe body configured to house the first internal structure and the second internal structure, and the pipe body has an inlet and an outlet. The first internal structure includes a head portion comprising a plurality of spiral vanes, and a body portion positioned downstream from the head portion and comprising a plurality of protrusions on its outer circumferential surface. The second internal structure formed in a hollow shaft shape includes a head portion comprising a plurality of spiral vanes, and a body portion positioned downstream from the head portion and comprising a plurality of protrusions on its outer circumferential surface. At least a part of the first internal structure is housed in the hollow of the second internal structure.

Abstract: A fluid supply pipe according to an embodiment of the invention includes a first internal structure, a second internal structure, and a pipe body configured to house the first internal structure and the second internal structure, and the pipe body has an inlet and an outlet. The first internal structure includes a head portion comprising a plurality of spiral vanes, and a body portion positioned downstream from the head portion and comprising a plurality of protrusions on its outer circumferential surface. The second internal structure formed in a hollow shaft shape includes a head portion comprising a plurality of spiral vanes, and a body portion positioned downstream from the head portion and comprising a plurality of protrusions on its outer circumferential surface. At least a part of the first internal structure is housed in the hollow of the second internal structure.

Abstract: A fluid supply apparatus according to an embodiment of the invention includes a housing and an internal structure which is housed in the hosing. The internal structure includes a shaft portion and a plurality of protrusions protruding from the outer circumferential surface of the shaft portion. A plurality of flow paths are formed between the plurality of protrusions, and a groove having a predetermined depth from the outer circumferential surface of the shaft portion is formed in each of at least a part of the plurality of flow paths.

Abstract: A fluid supply apparatus according to an embodiment of the invention includes an internal structure and a housing such as a pipe body configured to house the internal structure. The internal structure includes a first portion, a second portion, a third portion, and a fourth portion formed integrally on a common shaft member having a circular cross-section. The first portion is positioned upstream of the housing when the internal structure is housed in the housing and includes a shaft portion and a at least one spiral vane. The second portion is positioned downstream from the first portion and includes a shaft portion and a plurality of protrusions. The third portion is positioned downstream from the second portion and includes a shaft portion and at least one spiral vane. The fourth portion is positioned downstream from the third portion and includes a shaft portion and a plurality of protrusions.

Abstract: An embodiment of the present invention provides a nozzle assembly including a base module and a nozzle module for discharging a fluid entering the nozzle assembly to the outside. The base module includes a supporting member comprising a shaft portion, a dial-type handle for rotating the supporting member, and a fixing member for detachably fixing the nozzle module. The nozzle module has one or a plurality of flow paths formed in a direction orthogonal to the shaft portion of the supporting member of the base module. Further, the angle of the nozzle module with respect to the shaft portion of the supporting member of the base module is adjusted by manual rotation of the dial-type handle.

Abstract: A fluid supply pipe according to an embodiment of the invention includes a first internal structure, a second internal structure, and a pipe body configured to house the first internal structure and the second internal structure, and the pipe body has an inlet and an outlet. The first internal structure includes a head portion comprising a plurality of spiral vanes, and a body portion positioned downstream from the head portion and comprising a plurality of protrusions on its outer circumferential surface. The second internal structure formed in a hollow shaft shape includes a head portion comprising a plurality of spiral vanes, and a body portion positioned downstream from the head portion and comprising a plurality of protrusions on its outer circumferential surface. At least a part of the first internal structure is housed in the hollow of the second internal structure.

Abstract: A fluid supply pipe according to an embodiment of the invention includes an internal structure and a pipe body configured to house the internal structure. The pipe body has an inlet and an outlet and has a circular cross-section. The internal structure includes a first portion for diffusing a fluid flowing into the fluid supply pipe through the inlet radially from the center of the fluid supply pipe, the first portion being placed in the inlet side of the pipe body when the internal structure is housed in the pipe body, a second portion placed downstream from the first portion and including a plurality of spiral vanes to swirl the fluid diffused by the first portion, and a third portion placed downstream from the second portion and including a plurality of protrusions on its outer circumferential surface.