JP2012183458A - Fluid mixer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fluid mixer in which the favorable accuracy positioning of each parts can be performed, the assembly and disassembly can be easily performed, and the maintainability is excellent.SOLUTION: The fluid mixer 10 includes: a core member 20 having a pillar-shaped part 21; a housing member 30 having a through-hole 31 in which the engagement with the pillar-shaped part 21 is possible; and an orifice member 40 fitting with the fluid outflow side of the housing member 30. The pillar-shaped part 21 has a pillar-shaped base 21a fitting with the through-hole 31, and a pillar-shaped end 21b having the small diameter than that of the pillar-shaped base 21a. A first channel 11 is disposed at the pillar-shaped part 21 along the axial direction of the pillar-shaped part 21. A second channel 12 consists of the space formed between the inner surface of the through-hole 31 and the outside of the pillar-shaped end 21b. A fluid confluence part 10B is formed between the tip region of the pillar-shaped end 21b and the orifice member 40. A fluid vena contracta 10C is formed by the pore 41 of the orifice member 40. A fluid expansion part 10D is formed to the fluid outflow side of the orifice member 40.

Description

  The present invention relates to a fluid mixer used to mix two fluids.

  Various fluid mixers have been proposed that allow a plurality of fluids to join and circulate through the pores. For example, a fluid mixing device in which a concentric rectification unit that causes an inflow fluid to flow out as a concentric flow corresponding to the number of types and a fluid mixing unit that mixes the concentric flow that flows out from the concentric rectification unit are configured as separate members. Has been proposed (see Patent Document 1). The concentric rectifying unit and the fluid mixing unit are fixed by a bolt screw after assembling them.

  Patent Document 2 describes a microdevice that supplies two or more kinds of fluids that have flowed independently to a joining region and discharges these fluids from the joining region. This micro device has a supply channel that supplies each fluid that has flowed into the micro device to the merge region, and a discharge channel that discharges the merged fluid from the merge region to the outside of the micro device. Also in this micro device, each component is fastened by bolts and nuts.

  In Patent Document 3, fluids are introduced into one mixing channel through a plurality of supply ports, and these fluids are circulated as a laminar laminar flow, while the fluids are in the normal direction of the contact interface. A micromixer that diffuses and mixes is described. The micromixer has a plurality of fluid supply paths through which fluid supplied from the outside flows from one end to the other end, and opens to the other end of the fluid supply path. A plurality of supply ports arranged so as to be adjacent to each other along a predetermined diffusion direction orthogonal to the fluid flow direction, one end portion of which is connected to the supply port, and the fluid introduced through the supply port is connected to the other end And a diffusion control means for irradiating the fluid flowing through the mixing channel with the microwave along the diffusion direction. And the said diffusion control means is arrange | positioned symmetrically with respect to the cross-sectional center of the said mixing flow path. Also in this micromixer, each part is fastened by bolts and nuts.

JP 2004-344877 A JP 2005-288254 A JP 2007-185658 A

  In the technology described in each of the above-mentioned patent documents, the components constituting the fluid mixer are fastened by a plurality of bolts and nuts, so that the assembly and disassembly of the mixer are not easy and maintainability is improved. It cannot be said that it is good. In addition, it is not easy to accurately position the fluid flow path between the components due to the fastening with bolts and nuts. Furthermore, if the tightening force is not applied equally to each bolt and nut, rattling is likely to occur after tightening.

  Therefore, the subject of this invention is providing the fluid mixer which can eliminate the fault which the prior art mentioned above has.

The present invention includes a first flow path extending in one direction, a second flow path extending in the same direction as the first flow path,
A fluid merging portion provided on the fluid outflow side of the first flow path and the second flow path, where the first fluid flowing through the first flow path and the second fluid flowing through the second flow path merge;
A fluid contraction section in which the first fluid and the second fluid that have joined together contract;
A fluid mixer having a contracted first fluid and a fluid expansion portion into which the second fluid flows,
A core member having a columnar part;
A housing member having a through hole capable of fitting with the columnar part;
An orifice member fitted to the fluid outflow side of the housing member;
The columnar part of the core member has a complementary shape with the through hole of the housing member, a columnar base that fits into the through hole, a columnar tip that is located on the distal side of the columnar base and has a smaller diameter than the columnar base, Have
The first flow path is provided in the columnar part along the axial direction of the columnar part of the core member,
The second flow path comprises a space formed between the inner surface of the through hole of the housing member and the outer surface of the columnar tip of the columnar portion of the core member,
The orifice member is fitted to the fluid outflow side of the housing member so that the position of the pore coincides with the axis of the first flow path, and the fluid joins between the tip region of the columnar tip and the orifice member. And a fluid contraction part is formed by the pores of the orifice member,
The present invention provides a fluid mixer in which a fluid expansion portion is formed on the fluid outflow side of an orifice member.

  Since the fluid mixer of the present invention can assemble the main members constituting it by only fitting, these components can be positioned with high accuracy. Further, the structure is simple, it is easy to assemble and disassemble, and it has excellent maintainability.

Fig.1 (a) is a cross-sectional view which shows typically one Embodiment of the fluid mixer of this invention, FIG.1 (b) is a bb sectional view taken on the line in Fig.1 (a). Fig.2 (a) is a side view which shows the fluid mixer of this invention, FIG.2 (b) is a bb sectional view taken on the line in Fig.2 (a). FIG. 3 is an exploded perspective view of the fluid mixer shown in FIGS. 2 (a) and 2 (b). FIG. 4 is a cross-sectional view of the core member in the fluid mixer shown in FIG. FIG. 5 is a cross-sectional view of a housing member in the fluid mixer shown in FIG. 6 is a cross-sectional view of an orifice member in the fluid mixer shown in FIG. 7 is a cross-sectional view of a discharge plug in the fluid mixer shown in FIG. FIG. 8 is a cross-sectional view of the first end cap in the fluid mixer shown in FIG. 2. FIG. 9 is a cross-sectional view of a second end cap in the fluid mixer shown in FIG.

  The present invention will be described below based on preferred embodiments with reference to the drawings. The principal part of the fluid mixer 10 as an example of the fluid mixer of this invention is typically shown by FIG. 1 (a) and (b).

  The fluid mixer 10 includes a fluid flow path portion 10A, a fluid merging portion 10B continuously provided on the fluid outflow side thereof, and a fluid contraction portion 10C continuously provided on the fluid outflow side of the fluid merging portion 10B. And a fluid expansion portion 10D provided continuously on the fluid outflow side of the fluid contraction portion 10C.

  10 A of fluid flow-path parts have the 1st flow path 11 extended in one direction, and the 2nd flow path 12 extended in the same direction as a 1st flow path. The first fluid and the second fluid circulate in the first channel 11 and the second channel 12, respectively. As shown in FIG. 1 (b), the first flow path 11 and the second flow path 12 are preferably provided so that their cross-sectional shapes are concentric. The first flow path 11 communicates with a first fluid supply unit (not shown) provided on the fluid inflow side of the fluid mixer 10. The second flow path 12 communicates with a second fluid supply unit (not shown) provided on the side surface of the fluid mixer 10.

  The fluid junction 10 </ b> B is a portion where the first fluid that has flowed through the first flow path 11 and the second fluid that has flowed through the second flow path 12 merge. The shape of the fluid merging portion 10B is not particularly limited, and the cross-sectional shape may be formed in a uniform shape along the fluid flow direction, and for example, a cone shape that converges toward the pore 41 It may be formed in such a tapered shape. In the fluid junction 10B, the distance L from the end of the first flow path 11 to the pore 41 is preferably 0.20 to 20.00 mm, for example.

  The fluid contraction portion 10C is a portion that includes the pores 41 and where the first fluid and the second fluid that have joined at the fluid junction 10B contract. The fluid expansion part 10 </ b> D is located on the fluid outflow side of the pore 41. The fluid expansion part 10D has a flow path expansion region 14. The first fluid and the second fluid that have flowed through the pores 41 flow into the flow channel enlargement region 14. The channel expansion area 14 communicates with a fluid discharge portion (not shown) provided on the fluid outflow side of the fluid mixer 10.

  The specific structure of the fluid mixer 10 having the above configuration is shown in FIGS. As is apparent from these drawings, the fluid mixer 10 is configured by assembling a plurality of parts. The plurality of parts include a core member 20, a housing member 30, an orifice member 40, a discharge plug 50, a first end cap 60 and a second end cap 70. Hereinafter, each of these members will be described.

  As shown in FIGS. 2 to 4, the core member 20 has a columnar portion 21 extending in one direction. The columnar portion 21 has a columnar base portion 21a and a columnar tip portion 21b. In the fluid mixer 10, the columnar base portion 21a is located on the fluid inflow side, and the columnar tip portion 21b is located on the fluid outflow side. The columnar base 21 a has a complementary shape with a through hole 31 of the housing member 30 described later, and is fitted to the through hole 31. Therefore, when the columnar portion 21 of the core member 20 is inserted into the through hole 31 of the housing member 30, no space is formed between the outer surface of the columnar base portion 21 a and the inner surface of the through hole 31. On the other hand, the columnar tip 21b is located on the tip side of the columnar base 21a and has a smaller diameter than the columnar base 21a. Therefore, when the columnar portion 21 of the core member 20 is inserted into the through hole 31 of the housing member 30, a space is formed between the outer surface of the columnar tip portion 21 b and the inner surface of the through hole 31.

  The cross-sectional shape of the columnar portion 21b is not particularly limited, and may be, for example, a circle, an ellipse, a star, or a regular polygon. From the viewpoint of suppressing the disturbance of the flow of the second fluid, the cross-sectional shape of the columnar portion 21 is preferably circular.

  The shape of the tip end region of the columnar tip 21b of the columnar part 21 is not particularly limited, but the first fluid that flows through the first flow path 11 and the second fluid that flows through the second flow path 12 gradually From the viewpoint of suppressing turbulence in the flow by joining, it is preferable that the taper is formed in a tapered shape or a convex curved surface.

  The columnar portion 21 of the core member 20 is provided with the first flow path 11 described above along the axial direction of the columnar portion 21. The first flow path 11 is formed over the entire length of the core member 20. The first flow path 11 is open at both ends. Specifically, the end of the first flow path 11 on the fluid outflow side is open at the tip of the columnar tip 21b. An end portion of the first flow path 11 on the fluid inflow side is opened at an inflow plug portion 23 described later. The first fluid is supplied to the first flow path 11 through the inflow plug portion 23.

  The cross-sectional shape of the first flow path 11 is not particularly limited, and may be, for example, a circle, an ellipse, a star, a regular polygon, or the like. From the viewpoint of suppressing the disturbance of the flow of the first fluid flowing through the first flow path 11, the cross-sectional shape of the first flow path 11 is preferably circular. Further, the first flow path 11 may have the same cross-sectional shape along the length direction, or may have a different shape. From the viewpoint of suppressing the disturbance of the flow of the first fluid flowing through the first flow path 11, it is preferable that the cross-sectional shape of the first flow path 11 is the same shape along the length direction. When the cross-sectional shape of the 1st flow path 11 is circular, the diameter is 0.8-20.0 mm, for example, and it is preferable that it is 2.0-10.0 mm.

  The core member 20 further has a flange 22. The flange portion 22 is connected to the columnar base portion 21 a of the columnar portion 21. The cross-sectional shape of the flange portion 22 is larger than the cross-sectional shape of the columnar base portion 21a. The flange portion 22 has an annular first end surface 22a on the fluid inflow side and an annular second end surface 22b on the fluid outflow side.

  The core member 20 further has an inflow plug portion 23. The inflow plug portion 23 is located on the fluid inflow side of the flange portion 22 and is connected to the flange portion 22. The inflow plug portion 23 is recessed in the central region to form a recessed portion 23a. At the bottom of the recessed portion 23a, the end portion on the inflow side of the first flow path 11 is open. The first fluid is supplied to the first flow path 11 through the inflow plug portion 23.

  The housing member 30 is a basic member for positioning in the fluid mixer 10. That is, all the components constituting the fluid mixer 10 are configured to take the reference (base axis) from the housing member 30.

  As shown in FIGS. 2, 3, and 5, the housing member 30 has a through hole 31 that can be fitted to the columnar portion 21 of the core member 20. The cross-sectional shape of the through-hole 31 may be the same shape along the length direction, or the diameter may be increased or decreased continuously or stepwise along the length direction. The cross-sectional shape of the through hole 31 is complementary to the cross-sectional shape of the columnar base portion 21a of the columnar portion 21 as described above. Further, as described above, the columnar tip 21b of the columnar portion 21 has a smaller diameter than the columnar base 21a, so that the columnar portion 21 of the core member 20 is inserted into the through hole 31 of the housing member 30. In this state, a space is formed between the outer surface of the columnar tip portion 21 b and the inner surface of the through hole 31. This space is the second flow path 12 described above. The cross-sectional shape of the 2nd flow path 12 is circular as shown, for example in FIG.1 (b).

  The second channel 12 may have the same cross-sectional shape in the entire region in the length direction, or the cross-sectional shape may become wider continuously or stepwise toward the fluid outflow side, It may be narrower. It is preferable to adopt a configuration in which the cross-sectional shape is narrowed continuously or stepwise, since the second fluid flowing through the second flow path 12 becomes smooth. In such a configuration, for example, the cross-sectional shape of the columnar tip 21b of the core member 20 is the same over the length direction, and the through hole 31 of the housing member 30 is continuously or stepwise along the length direction. The diameter may be reduced.

  The end region on the fluid outflow side of the second flow path 12 is the tip region of the columnar tip 21b of the core member 20 and the first surface 43 (see FIG. 6) located on the fluid inflow side of the orifice member 40. Defined. In the end region on the fluid outflow side of the second flow path 12, the gap δ (see FIG. 1A) is preferably uniform in the fluid flow direction. Specifically, it is preferable that the gap δ is 0.10 to 10.00 mm, particularly 0.20 to 5.00 mm.

  The housing member 30 has a recessed portion 32 formed on a side surface thereof. A liquid supply hole 33 toward the through hole 31 is formed from the bottom of the recessed portion 32. The liquid supply hole 33 opens at the bottom surface of the recessed portion 32 and also opens at the inner surface of the through hole 31. The position where the liquid supply hole 33 is opened on the inner surface of the through hole 31 is a position where the columnar tip 21b is present when the columnar portion 21 of the core member 20 is inserted into the through hole 31 of the housing member 30. It has become. The second fluid is supplied into the second flow path 12 through the liquid supply hole 33.

  When the columnar portion 21 of the core member 20 is inserted into the through-hole 31 from the fluid inflow side of the housing member 30, the end surface 34 of the housing member on the fluid inflow side and the end surface 22b of the flange portion 22 of the core member 20 on the fluid outflow side. Are in contact with each other. This contact restricts the columnar portion 21 from being inserted into the through hole 31. As a result, even when the assembly and disassembly of the fluid mixer 10 are repeated, the insertion depth at which the columnar portion 21 is inserted into the through hole 31 is the same every time.

  On the fluid outflow side of the housing member 30, a receiving portion 35 of an orifice member 40 to be described later is recessed. The shape of the accommodating portion 35 is complementary to the shape of the orifice member 40. As a method of processing into a complementary shape, for example, a method of simultaneously finishing the through hole 31 of the housing member 30, the accommodating portion 35, and an outer wall 35b described later by machining such as a lathe. When this method is employed, the axes of the shape portions coincide with each other, and the shape of the accommodating portion 35 can be made complementary to the shape of the orifice member 40. By fitting the orifice member 40 into the accommodating portion 35, the axis of the first flow path 11 and the position of the pore 41 of the orifice member 40 are aligned. As a result, even if the assembly and disassembly of the fluid mixer 10 are repeated, the center position of the first flow path 11 and the center position of the pore 41 of the orifice member 40 are matched each time. Thereby, the distance L (see FIG. 1A) from the terminal end of the first flow path 11 to the pore 41 can be set to be the same every time it is assembled. The fitting between the accommodating portion 35 and the orifice member 40 can be a clearance fit, for example. By using the clearance fit, high-precision positioning can be easily performed with the minimum number of components constituting the fluid mixer 10 without using mechanical parts such as a reference pin for positioning, and a manual operation such as a hammer. There is an advantageous effect that assembly and disassembly work can be easily performed without using a tool.

  The accommodating portion 35 provided in the housing member 30 has an inclined side wall 35a so that the diameter of the accommodating portion 35 increases toward the opening end, that is, toward the fluid outflow side. That is, the side wall 35a of the accommodating part 35 is tapered. On the other hand, a side surface 42 of the orifice member 40 described later has the same inclination as the inclination of the side wall 35 a of the accommodating portion 35. That is, the side surface 42 of the orifice member 40 is also tapered. By doing so, the detachability of the orifice member 40 fitted in the accommodating portion 35 is increased, and the workability of disassembling the fluid mixer 10 is improved.

  The outer wall 35b (see FIG. 5) of the accommodating portion 35 provided in the housing member 30 is inclined so as to decrease in diameter toward the fluid outflow side. That is, the outer wall 35b of the accommodating portion 35 is tapered. On the other hand, a side wall 54a of the discharge plug 50 described later has the same inclination as the inclination of the outer wall 35b of the accommodating portion 35. That is, the side wall 54a of the discharge plug 50 is also tapered, and the through hole 31 of the housing member 30 and the through hole 51 of the discharge plug 50 are aligned. By doing so, the detachability of the discharge plug 50 fitted to the outer wall 35b is increased, and the workability of disassembling the fluid mixer 10 is improved.

  Instead of making the side wall 35a of the accommodating portion 35 and the side surface 42 of the orifice member 40 into a tapered shape, the side wall 35a of the accommodating portion 35 is formed in parallel with the axis of the first flow path 11 and the side surface of the orifice member 40 is formed. 42 may be formed in parallel with the side wall 35 a of the accommodating portion 35. By doing so, the positioning accuracy when the orifice member 40 is accommodated in the accommodating portion 35 can be further increased.

  As the shape of the accommodating portion 35, in addition to the above shapes, a shape of a rotating body having a fitting direction axis of each component as a rotation axis can be used. For example, a rotating parabola, a hemisphere, etc. are mentioned. The outer shape of the orifice member 40 can be the same as this.

  As shown in FIGS. 3 and 5, a first thread 36 is formed at the end of the housing member 30 on the fluid inflow side. On the other hand, a second thread 37 is formed at the end of the housing member 30 on the fluid outflow side. Each screw thread 36, 37 is threaded in the direction in which the through hole 31 extends. Each screw thread 36, 37 is screwed with a first end cap 60 and a second end cap 70 which will be described later.

  The orifice member 40 is plate-shaped as shown in FIGS. 2, 3 and 6, and has a pore 41 at the center thereof in plan view. Further, the side surface 42 is tapered. Furthermore, the orifice member 40 has a first surface 43 located on the fluid inflow side and a second surface 44 located on the fluid outflow side. The orifice member 40 has a conical first recess 45 on the first surface 43 side. On the other hand, the orifice member 40 has a flat cylindrical second recessed portion 46 on the second surface 44 side. The position of the bottom of the conical first recess 45, that is, the apex of the cone coincides with the position of the pore 41. Similarly, the position of the bottom of the cylindrical second recessed portion 46, that is, the axis of the cylinder also coincides with the position of the pore 41. That is, the pore 41 is formed so as to connect the bottom portion of the first recessed portion 45 and the bottom portion of the cylindrical second recessed portion 46.

  As the shape of the second recessed portion 46, in addition to the above shapes, a shape of a rotating body having a fitting direction axis as a rotation axis may be used. For example, a frustoconical shape, a rotating parabolic shape, a hemispherical shape, and the like can be given.

  Between the first surface 43 side of the orifice member 40 and the distal end region of the columnar distal end portion 21b of the core member 20, the above-described fluid confluence portion 10B including the first recessed portion 45 is formed. In addition, the fluid contraction portion 10C described above is formed by the pores 41. Further, the above-described fluid expanding portion 10 </ b> D including the second recessed portion 46 is formed on the second surface 44 side that is the fluid outflow side of the orifice member 40.

  The cross-sectional shape of the pore 41 of the orifice member 40 is not particularly limited, and may be, for example, a circle, an ellipse, a star, or a regular polygon. The pores 41 may have the same cross-sectional shape along the fluid flow direction, or may have different shapes. From the viewpoint of suppressing disturbance in the flow of the joined first fluid and second fluid, the cross-sectional shape of the pore 41 is preferably circular, and preferably the same shape along the length direction. That is, it is preferable that the flow path in the pore 41 has a uniform cross-sectional shape from the fluid inflow end to the fluid outflow end along the fluid flow direction.

The pore 41 of the orifice member 40 has a hole length l (see FIG. 1 (a)) of 0.100 to 5.000 mm, particularly preferably 0.200 to 3.000 mm. When the cross-sectional shape of the pore 41 is circular, the pore diameter d (see FIG. 1A) is preferably 0.100 to 5.000 mm, particularly preferably 0.200 to 3.000 mm. Further, the pore area s of the pores 41 is preferably 0.008 to 19.635 mm ² , particularly preferably 0.031 to 7.069 mm ² . The pore 41 preferably has a ratio l / d of a hole length l to a hole diameter d of 0.020 ≦ l / d ≦ 50000, and 0.060 ≦ l / d ≦ 15,000. Is more preferable.

  As shown in FIGS. 2, 3 and 7, the discharge plug 50 has a through hole 51. One end of the through hole 51 is open on the fluid inflow side, and the other end is also open on the fluid outflow side. The through-hole 51 and the cylindrical second recessed portion 46 in the orifice member 40 described above form a flow path expansion region 14 (see FIG. 1A) of the fluid expansion portion 10D.

  The shape of the flow path expansion region 14 is not particularly limited, and the cross-sectional shape may be formed in a uniform shape along the fluid flow direction. It may be formed in a cone shape.

  The discharge plug 50 has a first recessed portion 52 formed on the fluid inflow side and a second recessed portion 53 formed on the fluid outflow side. Each end of the through-hole 51 described above opens at the bottom of the first recess 52 and the bottom of the second recess 53. As shown in FIG. 2B, the first recessed portion 52 is a space that is sufficient to accommodate the orifice member 40 in a state where each component is assembled. Moreover, the side wall 54a of the 1st recessed part 52 inclines so that it may reduce in diameter as the 1st recessed part 52 goes to the fluid outflow side. That is, the side wall 54a of the first recessed portion 52 is tapered. A screw thread 53 a is formed on the peripheral wall of the second recessed portion 53.

  The discharge plug 50 further has a flange 54. The first recessed portion 52 described above and a part of the through hole 51 are formed in the flange portion 54. The flange 54 has a side wall 54a on the fluid inflow side. At the same time, the flange portion 54 has an annular end surface 54b on the fluid outflow side.

  The discharge plug 50 further has a discharge portion 55 connected to the fluid outflow side of the flange portion 54. The second recessed portion 53 described above and a part of the through hole 51 are formed in the discharge portion 55.

  As shown in FIGS. 2, 3, and 8, the first end cap 60 includes a cap top surface 61 and a flange portion 62 that hangs down from the cap top surface 61. The cap top surface 61 is opened in the central region, and an opening 61a is formed. The size of the opening 61 a is larger than the inflow plug portion 23 of the core member 20 described above and smaller than the flange portion 22 of the core member 20. A thread 62 a is formed on the inner surface of the flange portion 62. The screw thread 62 a is screwed with the first screw thread 36 of the housing member 30. That is, the first end cap 60 is screwed with the housing member 30 on the fluid inflow side of the housing member 30. As shown in FIG. 2, in a state where the first end cap 60 is screwed with the housing member 30, the core member 20 in a state where the columnar portion 21 is fitted in the through hole 31 of the housing member 30 and the housing member 30. Are fixed by the first end cap 60. Specifically, the lower surface 61b of the cap top surface 61 of the first end cap 60 presses the annular first end surface 22a of the core member 20 by screwing. When the core member 20 and the housing member 30 are brought into close contact with each other by this pressing, the annular second end surface 22b of the core member 20 is regulated by the end surface 34 of the housing member 30, so that the columnar portion 21 of the core member 20 is The insertion depth inserted into the thirty through-holes 31 is constant every time the assembly is performed.

  As shown in FIGS. 2, 3, and 9, the second end cap 70 includes a cap top surface 71 and a flange 72 that hangs down from the cap top surface 71. The cap top surface 71 has an opening 71a formed in the central area thereof. The size of the opening 71 a is larger than the discharge portion 55 of the discharge plug 50 described above and smaller than the flange portion 54 of the discharge plug 50. On the inner surface of the flange portion 72, a screw thread 72a is formed. The thread 72 a is screwed with the second thread 37 of the housing member 30. That is, the second end cap 70 is screwed with the housing member 30 on the fluid outflow side of the housing member 30. As shown in FIG. 2, in a state where the second end cap 70 is screwed with the housing member 30, the housing member 30 and the orifice member 40 fitted in the accommodating portion 35 of the housing member 30 are connected to the second end cap. 70 is fixed. Specifically, the lower surface 71b of the cap top surface 71 of the second end cap 70 presses the annular end surface 54b of the discharge plug 50 by screwing. By this pressing, the bottom surface of the first recessed portion 52 of the discharge plug 50 comes into close contact with the orifice member 40. At the same time, the side wall 54 a of the first recess 52 in the discharge plug 50 and the outer wall 35 b on the fluid outflow side of the housing member 30 are in contact with each other, and the first surface 43 of the orifice member 40 is the accommodating portion 35 in the housing member 30. Close to the bottom of the. Thereby, the housing member 30 and the orifice member 40 are fixed by the second end cap 70.

  In addition to having the above-described configuration, the fluid mixer 10 of the present embodiment further includes an adjustment mechanism that adjusts an insertion depth for inserting the columnar portion 21 of the core member 20 into the through hole 31 of the housing member 30. It may be. For example, a thin plate (not shown) called a shim is interposed between the annular second end surface 22 b (see FIG. 4) of the core member 20 and the end surface on the fluid inflow side of the housing member 30, so that the columnar portion 21. The insertion depth of the insertion can be adjusted. That is, it is possible to adjust the distance L and the degree of the gap δ shown in FIG. In this case, the insertion depth of insertion of the columnar portion 21 can be adjusted by increasing or decreasing the thickness of the thin plate or increasing or decreasing the number of the thin plate interposed. As the thin plate, for example, an annular thin plate having an opening larger than the cross section of the columnar base portion 21a of the columnar portion 21 can be used.

  As another example of the adjusting mechanism, a through screw hole extending in the same direction as the columnar portion 21 can be provided in the flange portion 22 of the core member 20. A screw (for example, a so-called set screw called a set screw) is screwed into the through screw hole. Then, by adjusting the protruding amount of the screw from the annular second end surface 22b (see FIG. 4) which is the surface facing the housing member 30 in the flange portion 22 of the core member 20, the columnar portion 21 of the core member 20 is housed. The insertion depth to be inserted into the through hole 31 of the member 30 can be adjusted.

  When the fluid mixer 10 is assembled by assembling the components having the above-described configuration, first, the columnar portion 21 of the core member 20 is inserted into the through hole 31 of the housing member 30 from the fluid inflow side, The housing member 30 is fitted. Under this state, the first end cap 60 is screwed into the housing member 30 on the fluid inflow side of the housing member 30. Next, on the fluid outflow side of the housing member 30, the accommodating portion 35 and the orifice member 40 are fitted, and the discharge plug 50 is disposed so as to continuously cover the orifice member 40. Under this state, the second end cap 70 is screwed into the housing member 30 on the fluid outflow side of the housing member 30. Thereby, the fluid mixer 10 having the structure shown in FIGS. 1A and 1B is formed. According to the fluid mixer 10, unlike the technique described in each of the patent documents described in the background section above, the core member 20 and the orifice member 40 have the housing member 30 as a base shaft (reference part). Since the fitting with the member 30 is easy, it is easy to increase the positioning accuracy of these components, and even when the assembly and disassembly of the fluid mixer 10 are repeated, the positioning of each component can be performed with high accuracy. Therefore, this fluid mixer 10 has very good maintainability. In addition, since the components can be assembled by a simple operation of screwing the first and second end caps 60 and 70 without fastening with bolts and nuts, assembly and disassembly of the fluid mixer 10 is extremely easy. It is. In addition, since screwing is performed from both sides of the fitting direction axis of the core member 20, the housing member 30, and the orifice member 40, it is possible to effectively prevent the fluid mixer 10 from rattling after assembly.

  Each component constituting the fluid mixer 10 can be formed of, for example, metal, ceramics, synthetic resin, or the like.

  The fluid mixer 10 of the present embodiment is applied to an emulsification apparatus that produces an emulsion in which a dispersed phase and a continuous phase are uniformly dispersed, for example.

  The fluid supplied to the fluid mixer 10 of the present embodiment may be any fluid that maintains fluidity, such as a gas phase, a liquid phase, a gas-liquid mixed phase, an emulsified phase, and a solid-liquid mixed phase (slurry). , Two kinds of combinations (including in-phase combinations) can be arbitrarily selected.

  The present invention has been described based on the preferred embodiments. However, the present invention is not limited to the above-described embodiments, and various modifications other than the above-described embodiments can be configured within the scope of technical common knowledge of those skilled in the art. Also good.

DESCRIPTION OF SYMBOLS 10 Fluid mixer 20 Core member 21 Columnar part 21a Columnar base part 21b Columnar front-end | tip part 22 Gutter part 30 Housing member 31 Through-hole 40 Orifice member 50 Discharge stopper 60 1st end cap 70 2nd end cap

Claims (9)

A first channel extending in one direction and a second channel extending in the same direction as the first channel;
A fluid merging portion provided on the fluid outflow side of the first flow path and the second flow path, where the first fluid flowing through the first flow path and the second fluid flowing through the second flow path merge;
A fluid contraction section in which the first fluid and the second fluid that have joined together contract;
A fluid mixer having a contracted first fluid and a fluid expansion portion into which the second fluid flows,
A core member having a columnar part;
A housing member having a through hole capable of fitting with the columnar part;
An orifice member fitted to the fluid outflow side of the housing member;
The columnar part of the core member has a complementary shape with the through hole of the housing member, a columnar base that fits into the through hole, a columnar tip that is located on the distal side of the columnar base and has a smaller diameter than the columnar base, Have
The first flow path is provided in the columnar part along the axial direction of the columnar part of the core member,
The second flow path comprises a space formed between the inner surface of the through hole of the housing member and the outer surface of the columnar tip of the columnar portion of the core member,
The orifice member is fitted to the fluid outflow side of the housing member so that the position of the pore coincides with the axis of the first flow path, and the fluid joins between the tip region of the columnar tip and the orifice member. And a fluid contraction part is formed by the pores of the orifice member,
A fluid mixer in which a fluid expansion portion is formed on a fluid outflow side of an orifice member. The core member has a collar portion that is connected to the columnar base portion,
When the columnar portion is inserted into the through hole from the fluid inflow side of the housing member, the end surface of the housing member on the fluid inflow side and the flange portion are in contact with each other to restrict the columnar portion from being inserted into the through hole. The fluid mixer according to claim 1. A first end cap threadably engaged with the housing member on the fluid inflow side of the housing member;
The housing member and the core member in which the columnar portion is inserted into the through hole of the housing member are fixed by the first end cap in a state where the first end cap is screwed with the housing member. The fluid mixer described. A second end cap threadably engaged with the housing member on the fluid outflow side of the housing member;
The fluid mixer according to any one of claims 1 to 3, wherein the housing member and the orifice member are fixed by the second end cap in a state where the second end cap is screwed with the housing member. The housing portion of the orifice member is recessed on the fluid outflow side of the housing member,
The fluid mixer according to any one of claims 1 to 4, wherein the housing portion and the orifice member are fitted to align the axis of the first flow path with the position of the pore of the orifice member.   The side wall of the accommodating part is inclined so that the diameter of the accommodating part increases toward the opening end, and the side surface of the orifice member has the same inclination as the inclination of the sidewall of the accommodating part. 5. The fluid mixer according to 5.   The fluid mixer according to claim 5, wherein the side wall of the housing portion is formed in parallel with the axis of the first flow path, and the side surface of the orifice member is formed in parallel with the side wall of the housing portion.   The fluid mixer according to any one of claims 1 to 7, further comprising an adjusting mechanism for adjusting an insertion depth for inserting the columnar portion of the core member into the through hole of the housing member. A through screw hole extending in the same direction as the extending direction of the columnar portion is provided in the collar portion of the core member, and a screw is screwed into the through screw hole.
The insertion depth at which the columnar portion of the core member is inserted into the through hole of the housing member can be adjusted by adjusting the protruding amount of the screw from the surface facing the housing member at the flange portion of the core member. 3. The fluid mixer according to 2.

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