Bubble liquid generating nozzle

1 . A bubble liquid generating nozzle, comprising:

a nozzle main body, which includes a tubular body, a closing flat plate that closes one tube end of the tubular body, and a plurality of connecting tubular portions, and in which an inflow space into which a liquid flows is formed inside the tubular body between another tube end of the tubular body and the closing plate;

a plurality of liquid jetting holes that are arranged between a tube center line of the tubular body and-an outer peripheral surface of the tubular body; and

a guide fixed body,

wherein the closing flat plate closes one tube end of the tubular body so that one closing plate flat surface is brought into abutment against the one tube end of the tubular body;

wherein each of the connecting tubular portions is arranged between the tube center line of the tubular body and the outer periphery of the tubular body,

wherein each of the connecting tubular portions is arranged so as to be separated at tube angles between each of the connecting tubular portions in a circumferential direction of the tubular body,

wherein each of the connecting tubular portions is arranged in the inflow space so that one connecting tube end of the connecting tubular portion is brought into abutment against the one closing plate flat surface of the closing flat plate,

wherein each of the connecting tubular portions is fixed to the closing flat plate so as to protrude from the one closing plate flat surface of the closing flat plate to the inflow space in a direction of the tube center line of the tubular body,

wherein each of the liquid jetting holes is arranged so as to be separated at hole angles between each of the liquid jetting holes in the circumferential direction of the-tubular body,

wherein each of the liquid jetting holes is arranged between each of the connecting tubular portions in the circumferential direction of the tubular body,

wherein each of the liquid jetting holes penetrates through the closing flat plate in the direction of the tube center line of the tubular body to be opened to each of the closing plate flat surfaces of the closing flat plate,

wherein each of the liquid jetting holes is formed in a shape of a conical hole penetrating through the closing flat plate while being reduced in diameter from the inflow space side,

wherein the guide fixed body includes a guide ring arranged in the inflow space concentrically with the tubular body, a plurality of guide ribs arranged inside the guide ring and having a rib thickness in the direction of a ring center line of the guide ring, a plurality of liquid guides each formed in a conical shape, and-a plurality of connecting protrusions,

wherein each of the guide ribs is arranged so as to be separated at rib angles between each of the guide ribs in a circumferential direction of the guide ring, to thereby form a communication hole between each of the guide ribs,

wherein each of the guide ribs extends between the ring center line and inner peripheral surface of the guide ring, and is fixed to the inner periphery of the guide-ring,

wherein a conical side surface of the liquid guide is an undulating surface having a plurality of convex portions and a plurality of concave portions,

wherein each of the convex portions is arranged so as to be separated at arrangement angles between each of the convex portions in a circumferential direction of the liquid guide,

wherein each of the concave portions is formed between each of the convex portions so as to be separated at arrangement angles between each of the concave portions in the circumferential direction of the liquid guide,

wherein each of the liquid guides is arranged between the ring center line and the inner peripheral surface of the guide ring,

wherein each of the liquid guides is arranged so as to be separated at guide angles between each of the liquid guides in the circumferential direction of the guide ring,

wherein each of the liquid guides is fixed to each of the guide ribs so that a conical bottom surface of the liquid guide is brought into abutment against a rib front surface in a rib thickness direction of each of the guide ribs,

wherein each of the liquid guides is inserted into each of the liquid jetting holes from a conical upper surface of the liquid guide with a gap between the conical side surface and a conical inner peripheral surface of the liquid jetting holes,

wherein each of the liquid guides is arranged so that the conical bottom surface protrudes from each of the guide ribs to each of the communication holes in the circumferential direction of the guide ring,

wherein each of the liquid guides is mounted in each of the liquid jetting holes so as to form a liquid flow path between the conical side surface and the conical inner peripheral surface,

wherein each of the connection protrusions is arranged between the ring center line and the inner peripheral surface of the guide-ring,

wherein each of the connecting protrusions is placed on each of the guide ribs between each of the liquid guides so as to be separated at protrusion angles between each of the connecting protrusions in the circumferential direction of the guide ring,

wherein each of the connecting protrusions is fixed to each of the guide ribs so that a bottom surface of each of the connecting protrusions is brought into abutment against the rib front surface of each of the guide ribs,

wherein each of the connecting protrusions is press-fitted into each of the connecting tubular portions from the inflow space, and is mounted in each of the connecting tubular portions,

wherein each of the guide ribs on which the connecting protrusions are placed is arranged in the inflow space so that the rib front surface of each of the guide ribs is brought into abutment against the another connecting tube end of each of the connecting tubular portions by insertion of each of the connecting protrusions into each of the connecting tubular portions,

wherein each of the guide ribs partitions a flow path space with a guide interval between the rib front surface of each of the guide ribs and the one closing plate flat surface by abutment against the another connecting tube end of each of the connecting tubular portions,

wherein each of the communication holes communicates to another tube end of the tubular body and the flow path space,

wherein each of the liquid flow paths is formed in an annular shape over a circumferential direction of the liquid jetting holes between the conical side surface and the conical inner peripheral surface of the liquid jetting holes and communicates to the flow path space, and

wherein the liquid having flowed out to the flow path space flows into the liquid flow path, and the liquid flow path ejects the annular liquid from each of the liquid jetting holes.

2 . The bubble liquid generating nozzle according to claim 1 ,

wherein each of the guide ribs has a rib width in the circumferential direction of the guide ring,

wherein each of the connecting tubular portions has an inner peripheral surface having a conical shape that is gradually reduced in diameter from another connecting tube end of the connecting tubular portion to the one connecting tube end,

wherein each of connecting protrusions is formed in a trapezoidal flat plate having the same plate thickness as the rib width of the guide rib,

wherein each of the connecting protrusions includes a connecting hole groove and a pair of connecting convex portions,

wherein the connecting hole groove penetrates through the connecting protrusion, is opened to a plate front surface and a plate back surface of the connecting protrusion in a plate thickness direction of the connecting protrusion, and is opened to a trapezoid upper surface of the connecting protrusion,

wherein the pair of connecting convex portions is formed between the connecting hole groove and each of the trapezoidal side surface of the connecting protrusion,

wherein each of the connecting protrusions is placed on each of the guide ribs between each of the liquid guides so that a trapezoidal bottom surface of the connecting protrusion is brought into abutment against the rib front surface,

wherein each of the connecting protrusions is press-fitted into each of the connecting tubular portions from a trapezoidal upper surface of the connecting protrusion,

wherein each of the connecting protrusions is mounted in each of the connecting tubular portions from the trapezoidal upper surface while each of the connecting convex portions is brought into abutment against a conical inner peripheral surface of the connecting tubular portion,

wherein each of the connecting convex portions of each of the connecting protrusions is pressed against the inner peripheral surface of the connecting tubular portion by abutment against the conical inner peripheral surface of the connecting tubular portion, and

wherein each of the connecting protrusions is fixed to each of the connecting tubular portions by pressing of each of the connecting convex portions against the inner peripheral surface of the connecting tubular portion.

3 . The bubble liquid generating nozzle according to claim 2 ,

wherein each of the connecting protrusions is placed on each of the guide ribs between each of the liquid guides so that the plate front surface and the plate back surface face the circumferential direction of the guide ring and the trapezoidal surface of the connecting protrusion is brought into abutment against the rib front surface of the guide rib, and

wherein each of the connecting protrusions is fixed to each of the guide ribs so that the plate front surface and

the plate back surface of the connecting protrusion are arranged to be flush with each rib width end face of the guide rib.

4 . The bubble liquid generating nozzle according to claim 1 ,

wherein each of the liquid guides is arranged so that the conical bottom surface side protrudes from each of the liquid jetting holes to the flow path space by abutment of each of the guide ribs against another connecting tube end of each of the connecting tubular portions, and

wherein each of the liquid guides is mounted in each of the liquid jetting holes so that the conical upper surface of each of the liquid guides is arranged to be flush with the another closing plate flat surface of the closing flat plate.