JP2007090227A - Manufacturing method for fluid device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a manufacturing method for a fluid device with easy manufacturing and an inexpensive manufacturing cost capable of forming an exact concentric flow and being manufactured by a machine work without requiring a specific working technology. <P>SOLUTION: The concentric flow regulation part constituting the fluid device 12 is manufactured by an original shape body production step for producing an original shape body to a large diameter than the finally required diameter of the concentric flow regulation part 24; an elongation step for contracting a cross section of the original shape body 90 such that the produced original shape body 90 is elongated in a longitudinal direction to become the finally required diameter dimension; and a cutting step for stepping the elongated original shape body 90' to required length of the concentric flow regulation part 24. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a method for manufacturing a fluid device, and more particularly to a technique for manufacturing a concentric rectification unit that can accurately form a concentric flow when a plurality of supplied fluids flow out to a fluid circulation unit.

  In recent years, in the field of chemical industry or pharmaceutical industry that manufactures pharmaceuticals / reagents, etc., a technology for producing chemical substances by causing a plurality of fluids to flow through one channel and reacting them has been highlighted. A typical example is a fluid device such as a microreactor. The fluid device is a technique for continuously producing a chemical substance, which is a reaction product, by reacting a plurality of fluids in a laminar flow state in a channel having a minute channel cross section. This method differs from batch-type reactions using a stirring tank, etc., because the reaction occurs when the reaction molecules in the fluid meet at the interface of the fluid that flows continuously in the flow path, which is a minute space. The efficiency can be significantly improved, and a chemical substance having fine particles and excellent monodispersibility can be produced.

  As one form of fluid device, there is a concentric flow type in which a plurality of fluids are circulated through the flow path in a concentric flow state. This concentric flow type fluid device prevents reaction products from adhering to the flow path wall surface. Useful.

  Examples of concentric flow type fluid devices include Patent Document 1 and Patent Document 2.

  Patent Document 1 discloses a fluid device having a triple pipe structure as an introduction flow path to a reaction flow path, and the triple pipe is supported at the base end portion thereof. A fluid that reacts with the fluid flowing through the innermost side and the fluid flowing through the outermost side of the triple pipe structure is used, and an inert fluid is allowed to flow between the two fluids, thereby providing an outlet for the introduction channel. The product from the reaction is made difficult to adhere.

Patent Document 2 discloses a fluid device for forming a concentric flow composed of a supply plate, a confluence plate, and a discharge plate each having a disk shape. Since this fluid device can be disassembled into the above-described plates, it can be disassembled and easily cleaned even if a flow path defect due to product adhesion or the like occurs. Further, even when reassembling after disassembling, the respective plates can be positioned with respect to each other by a positioning pin or an inlay structure.
JP 2002-292274 A JP 2003-164745 A

  However, in the structure in which the inner tube is supported by the outer tube at the base end portion on the opposite side of the outlet of the introduction channel as in Patent Document 1, there are few portions that support the inner tube, and the center between the inner tube and the outer tube There is a drawback that it is difficult to achieve positioning accuracy for matching the axes. If the positioning accuracy for matching the center axes of the inner tube and the outer tube is poor, an accurate concentric flow cannot be formed. As a result, since the concentric flow is disturbed, a laminar concentric flow cannot be obtained with high accuracy in the reaction flow path, and the diffusion at the interface between the fluids becomes uneven. As a result, since uniform diffusion is not performed, there is a problem in that the purity of the generated chemical substance is deteriorated and the yield is deteriorated.

  In addition to supporting the inner tube on the outer tube at the base end, a block-shaped spacer may be partially interposed between the inner tube and the outer tube. In addition, the center axis between the inner tube and the outer tube is likely to be displaced due to the position or deviation of the spacer, which is not a fundamental solution.

  In the case of Patent Document 2, it is easy to form an accurate concentric flow as compared with Patent Document 1, but it is not easy to form by machining, and a special processing method such as fine electrical discharge machining is required. As a result, there is a problem that the production of the fluid device is not easy and the production cost is increased. In addition, since the thickness of each disk-shaped plate is limited, to create a fluid device with a high aspect ratio (channel length / equivalent diameter), it is necessary to stack a plurality of plates, and the number of stacks If the number is increased, the positional accuracy at the time of assembly is lowered, so that it is difficult to obtain an accurate concentric flow.

  The problem when the concentric flow cannot be formed accurately is not limited to the case where the reaction operation is performed as in the chemical reaction described above, but the unit operation of the fluid (for example, mixing, extraction, separation, heating, cooling) , Heat exchange, crystallization, absorption) is the same.

  The present invention has been made in view of such circumstances, can form an accurate concentric flow, can easily obtain high maintainability and a desired aspect ratio, and requires special processing technology. Therefore, an object of the present invention is to provide a method for manufacturing a fluidic device that can be manufactured by machining and is easy to manufacture and low in manufacturing cost.

  In order to achieve the above object, the first aspect of the present invention provides a concentric rectification unit that rectifies a plurality of supplied fluids so that a concentric flow is formed, and a concentric flow that flows out of the concentric rectification unit. In the manufacturing method of a fluid device including a fluid circulation part that circulates for a desired treatment, the concentric rectification part of the fluid device is manufactured in a multiple tube structure of a double tube or more. A plurality of centering pipes are arranged along the annular gap in the annular gap between the diameter pipe and the small diameter pipe located inside the large diameter pipe, so that the central axis of the large diameter pipe and the small diameter pipe An original body manufacturing process for manufacturing an original body having a structure aligned with the central axis larger than the final required diameter of the concentric rectifying unit, and extending the manufactured original body in the longitudinal direction to Elongation process for reducing the cross-sectional area of the original body so that the final required diameter is obtained Provides a method of fabricating a fluidic device, characterized in that it comprises a cutting step of cutting for cutting the elongated original body needs a length of the concentric rectifying section.

  Here, simply referring to the diameter of the pipe means the outer diameter of the pipe. Further, in the description of the large-diameter pipe located outside of the pipes constituting the multiple pipe structure of the double pipe or more and the small-diameter pipe located inside the large-diameter pipe, the large-diameter pipe and the small-diameter pipe are relatively This means a general relationship and is not limited to a double-pipe structure. Therefore, for example, in the case of a triple pipe structure, in the relationship between the outermost tube and the middle tube, the outermost tube is a large diameter tube and the middle tube is a small diameter tube. In the relationship between the middle tube and the innermost tube of the triple tube structure, the middle tube is a large diameter tube and the innermost tube is a small diameter tube. The same applies to the multiple tube structure. In the following description, in the triple tube structure, the middle tube may be described as a medium diameter tube.

  The present invention produces an original body of a concentric rectification unit that can form an accurate concentric flow with a diameter larger than the diameter of the concentric rectification part actually used, and by accurately reducing the original form body, A concentric rectification unit can be produced by accurately forming a concentric flow with a micro-level diameter.

  According to the first aspect of the present invention, first, in the original body manufacturing process, the original body of the concentric rectifying portion having a structure capable of accurately forming the concentric flow is made larger than the finally required diameter of the concentric rectifying portion. Is also made in large diameter. This original body has a centering pipe in an annular gap between a large-diameter pipe located outside a pipe constituting a multi-pipe structure of two or more pipes and a small-diameter pipe located inside the large-diameter pipe. Are densely arranged along the annular gap so that the central axis of the large-diameter pipe and the central axis of the small-diameter pipe coincide with each other. In addition, the centering tube supports the entire length direction, unlike the conventional spacer that supports a part of the length direction of the large diameter tube and the small diameter tube, so that any position in the length direction of the original body is set at the diameter. Even when cut in the direction, the central axes of the large-diameter pipe and the small-diameter pipe coincide.

  The present invention will be described with an example of a double pipe structure. A plurality of centering pipes are arranged in an annular gap of a double pipe structure of a large diameter pipe and a small diameter pipe, and a fluid A is caused to flow in the small diameter pipe to be arranged in an annular shape. If the fluid B is caused to flow through the plurality of centering pipes, a two-layer concentric flow of the fluid A and the fluid B can be accurately formed in the fluid circulation portion. The same applies to a multiple tube structure having a double tube structure or more.

  Next, in the extending step, the produced original body is extended in the longitudinal direction and the cross-sectional area of the original body is reduced so as to finally have a required diameter. This produces an elongated original. In this case, it is preferable to extend by applying a temperature below the melting point of the member material using the original body. The same applies to the elongation process that appears below.

  Next, in the cutting step, the elongated original body is cut to the required length of the concentric rectification unit. As a result, a concentric flow can be accurately formed with a micro-level diameter, and a concentric rectification unit can be manufactured. Moreover, even a concentric rectifying portion having a micro-level diameter can be easily manufactured by machining, and does not require a special processing method such as fine electrical discharge machining. Therefore, a fluid device having a micro channel can be manufactured easily and at low cost. Moreover, the diameter dimension of a concentric rectification | straightening part can be easily changed into a desired diameter dimension by changing the expansion | extension rate which expand | extends an original form body at an expansion | extension process. Furthermore, when creating a concentric rectification unit with a high aspect ratio (flow path length / equivalent diameter), it is easily handled by adjusting the elongation rate in the stretching process and the cutting length cut in the cutting process. be able to.

  As the large diameter tube, the small diameter tube, and the centering tube, a circular tube or a regular polygonal tube (for example, a regular square tube) can be preferably used, but a centering tube is disposed between the large diameter tube and the small diameter tube. Thus, any tube may be used as long as the large-diameter tube, the small-diameter tube, and the centering tube are mutually related so that the central axes of the large-diameter tube and the small-diameter tube can coincide with each other.

  A second aspect is characterized in that, in the first aspect, the large-diameter pipe, the small-diameter pipe, and the centering pipe are circular pipes having a circular cross-sectional shape.

  This is because it is preferable to use a circular pipe as the large diameter pipe, the small diameter pipe, and the centering pipe.

  A third aspect is characterized in that, in the first aspect, the large-diameter pipe, the small-diameter pipe, and the centering pipe are polygonal pipes having a regular polygonal cross-sectional shape.

  This is because it is preferable to use a polygonal tube as the large diameter tube, the small diameter tube, and the centering tube.

  A fourth aspect of the present invention is characterized in that, in the third aspect, the polygonal tube is a square square tube.

  The fourth aspect of the present invention is a case of using a square square tube among the polygonal tubes.

  A fifth aspect of the present invention is characterized in that, in any one of the first to fourth aspects, the centering pipes are densely arranged in the annular gap.

  If the centering pipes are densely arranged in the annular gap, the original body can be stretched in a balanced manner in the stretching process. However, the present invention can also be applied when the centering tubes are not densely arranged in the annular gap. In this case, the space of the annular gap is filled with, for example, a resin soluble in a solvent, and after the concentric rectification unit is manufactured, the resin is dissolved with a solvent or etched.

  In order to achieve the above object, a sixth aspect of the present invention provides a concentric rectification unit that rectifies a plurality of supplied fluids so that a concentric flow is formed, and a concentric flow that flows out of the concentric rectification unit. In a method for manufacturing a fluid device including a fluid circulation part that circulates for the purpose of desired processing, the concentric rectification part of the fluid device is manufactured by concentrating a large number of small diameter tubes within a large diameter tube. One of the many small-diameter pipes is arranged coaxially with the central axis of the large-diameter pipe and remains outside the single small-diameter pipe located at the center. An original body having a structure in which at least one pipe annular group in which small-diameter pipes are arranged in an annular shape is laminated to have a diameter larger than the final required diameter of the concentric rectifying unit; and The produced original body is elongated in the longitudinal direction so that the final required diameter is obtained. A fluid device manufacturing method comprising: an elongating step for reducing the cross-sectional area of the original shape; and a cutting step for cutting the elongate original shape to a required length of the concentric rectifying unit. To do.

  According to claim 6, the original body has a structure in which a large number of small diameter tubes having the same diameter are densely housed in a large diameter tube, and one of the many small diameter tubes is the center of the large diameter tube. Since it is arranged on the same axis as the shaft, and is formed in a structure in which at least one layer of the annular ring group in which the remaining small diameter pipes are annularly arranged outside the single small diameter pipe located at the center is laminated. By processing the original body in the extension process and the cutting process as described above, a concentric flow can be accurately formed with a micro-level diameter, and a concentric rectifying unit can be manufactured.

  As the large-diameter pipe, the small-diameter pipe, and the centering pipe, a circular pipe or a regular polygonal pipe (for example, a regular square pipe) can be preferably used, but the central axes of the large-diameter pipe, the small-diameter pipe, and the tube annular group are made to coincide. Any tube can be used as long as it is a mutual relationship between a large-diameter tube, a small-diameter tube, and a tube annular group.

  A seventh aspect is characterized in that, in the sixth aspect, the large-diameter pipe and the small-diameter pipe are circular pipes having a circular cross-sectional shape. This is because it is preferable to use circular pipes as the large diameter pipe and the small diameter pipe.

  An eighth aspect is characterized in that, in the sixth aspect, the large-diameter pipe and the small-diameter pipe are polygonal pipes having a regular polygonal cross-sectional shape. This is because it is preferable to use polygonal tubes as the large diameter tube and the small diameter tube.

  A ninth aspect is characterized in that, in the eighth aspect, the polygonal tube is a square square tube.

  This is a case where a square tube is used as the polygonal tube.

  A tenth aspect of the present invention is the method according to any one of the first to ninth aspects, wherein in the elongating step, the original body is extended so that the concentric rectifying portion has a cross-sectional area capable of forming a laminar concentric flow. It is characterized by.

  This is because the present invention, which can accurately form a concentric flow, is more effective in laminar flow. The inner diameter of the manufactured concentric rectification unit varies somewhat depending on the flow rate, viscosity, etc. of the fluid, but is preferably 10 mm or less, and more preferably 1 mm or less.

  An eleventh aspect is characterized in that, in any one of the first to tenth aspects, in the elongating step, elongating is performed in a range of 1/5 to 1/25 of a diameter of the original body.

  This is because, when the elongation rate of the original body in the expansion process is small, the diameter of the original body must be reduced, and it is difficult to accurately form a structure that forms an accurate concentric flow. In addition, when the elongation rate of the original body in the stretching process is too large, the shaft core is likely to be displaced during the stretching process. Taking these into consideration, it is preferable to extend the film so as to be in the range of 1/5 to 1/25 of the diameter of the original body.

  A twelfth aspect according to the first to eleventh aspects is characterized in that, in the extension step, the original body is extended in multiple stages.

  The stretching of the original body in the stretching process may be performed in multiple stages without stretching to the target stretching rate at a time. For example, the first extension is set to 1/5 of the diameter of the original body, and the original body extended to 1/5 is further extended to 1/5 of the diameter by the next extension. Thereby, it can extend | stretch to 1/25 of the radial dimension of the original original body.

  In order to achieve the above object, a thirteenth aspect of the present invention provides a concentric rectification unit that rectifies a plurality of supplied fluids so that a concentric flow is formed, and a concentric flow that flows out of the concentric rectification unit. In the manufacturing method of a fluid device including a fluid circulation part that circulates for a desired treatment, the concentric rectification part of the fluid device is manufactured in a multiple tube structure of a double tube or more. A plurality of centering pipes are arranged along the annular gap in the annular gap between the diameter pipe and the small diameter pipe located inside the large diameter pipe, so that the central axis of the large diameter pipe and the small diameter pipe A fluid comprising: an original body manufacturing process for manufacturing an original body having a structure in which a central axis is matched; and a cutting process for cutting the original body into a required length of the concentric rectifying unit. Provide a device fabrication method.

  The invention of claim 13 is a case where a thin tube having a thin concentric rectifying portion to be finally manufactured is used, and in this case, the extending step can be omitted. This is an effective manufacturing method when the diameter of the concentric rectifying portion is relatively large.

  In order to achieve the above-mentioned object, the invention according to claim 14 includes a concentric rectification unit that rectifies a plurality of supplied fluids so that a concentric flow is formed, and a concentric flow that flows out of the concentric rectification unit. In the manufacturing method of a fluid device having a fluid circulation part that circulates for a desired treatment, the concentric rectification part of the fluid device is manufactured by concentrating a large number of small diameter tubes within a large diameter tube. One of the many small-diameter pipes is disposed coaxially with the central axis of the large-diameter pipe and remains outside the single small-diameter pipe located at the center. An original body manufacturing process for manufacturing an original body having a structure in which at least one tube annular group in which small-diameter pipes are annularly arranged is laminated, and cutting the original body into a required length of the concentric rectifying unit A method of manufacturing a fluidic device, comprising: a cutting step. To.

  The invention of claim 14 is also a case where a thin tube having a concentric rectifying portion to be finally produced is used, and the structure of the original body is different from that of claim 13.

  A fifteenth aspect is characterized in that, in any one of the first to fourteenth aspects, the manufactured concentric rectifying portion is detachably fitted into an inlet portion of an outer tube forming the fluid circulation portion.

  A fluid device is manufactured by detachably fitting the concentric rectifying unit manufactured according to any one of claims 1 to 14 into the inlet portion of the outer tube forming the fluid circulation unit. In this way, by fitting the concentric rectifying unit to the outer tube so as to be detachable, when a poor flow occurs in the concentric rectifying unit, it can be removed from the outer tube and easily cleaned. Thereby, high maintainability can be obtained. Furthermore, it is convenient that the concentric rectification unit can be easily replaced according to the number of fluids.

  A sixteenth aspect is the same as the first to fifteenth aspects, in which the concentric separation part that separates the fluid flowing through the fluid circulation part as a concentric flow is manufactured in the same manner as the concentric rectification part, It fits in the outlet part of the said outer tube | pipe freely at the time of attachment or detachment.

  Thereby, the fluid device which can isolate | separate the fluid which flows through a fluid distribution part as a concentric flow can be manufactured.

  In addition, since the central axes of the concentric rectifying unit and the concentric separating unit can be matched, when the fluid flowing through the fluid circulation unit is separated into a concentric flow by the concentric separating unit, the same center as the concentric rectifying unit is used. Concentric flow can be separated on an axial basis. That is, for example, when an accurate three-layer concentric flow is circulated through the fluid circulation unit by the concentric rectification unit and a product is generated in the intermediate layer portion of the three-layer concentric flow, the same product is separated. If the center axis of the core separation part is displaced from the center axis of the concentric rectification part, only the intermediate layer part cannot be separated with high accuracy. According to the sixteenth aspect, since the central axes of the concentric rectifying unit and the concentric separating unit can be matched, only the intermediate layer portion can be separated with high accuracy. In this case, the number of concentric flow layers that can be formed by the concentric rectification unit may be different from the number of concentric flow layers that can be separated by the concentric separation unit. For example, when a two-layer concentric flow is formed with two fluids in the concentric rectification unit, but the concentric separation unit is to be separated as a three-layer concentric flow, the concentric separation unit can be separated into three layers. Things should be placed. Furthermore, it is preferable that the concentric separation part is also detachably fitted to the outer tube, and can be easily removed from the outer tube and cleaned when a flow path defect or the like occurs.

  As described above, according to the present invention, an accurate concentric flow can be formed, high maintainability and a desired aspect ratio can be easily obtained, and machining can be performed without requiring a special processing technique. Since it can be manufactured, it is possible to provide a method for manufacturing a fluid device that is easy to manufacture and inexpensive to manufacture.

  Hereinafter, preferred embodiments of a method for manufacturing a fluidic device according to the present invention will be described in detail with reference to the accompanying drawings.

  In the manufacturing method of the present invention, the structure of the concentric rectifying unit and the concentric separating part constituting the fluid device is important. First, the structure of the fluid device manufactured by the manufacturing method of the present invention, particularly the concentric rectifying unit, is used. We will explain and then explain the fabrication method of the present invention.

  FIG. 1 is an exploded view illustrating the entire configuration of a fluid device unit in which a plurality of fluid devices (five in FIG. 1) are grouped into one unit. In addition, the fluid device used in FIG. 1 is an example of a type in which a two-layer concentric flow is formed by two kinds of fluids L1 and L2.

  As shown in FIG. 1, the fluid device unit 10 mainly includes a rectangular support case 14 that supports a plurality of fluid devices 12, 12..., And an upper opening 14 </ b> A and a lower opening 14 </ b> B of the support case 14. A pair of lid plates 16 and 16 and a supply header 18 assembled to the front side of the support case 14 (the fluid supply side of the fluid device 12) and supplying two types of fluids L1 and L2 to the plurality of fluid devices 12. The discharge header 20 is assembled to the rear side of the support case 14 (the fluid discharge side of the fluid device 12) and discharges the processing fluid discharged from the plurality of fluid devices 12. 1 indicates the flow direction of the fluids L1 and L2.

  As shown in FIG. 2, the fluid device 12 has a concentric rectifying unit 24 detachably fitted in an inlet portion of a cylindrical outer tube 22, and a concentric separating unit 26 detachably fitted in an outlet portion. Combined. As a result, a fluid circulation section 28 is formed in the outer tube 22 between the concentric rectification section 24 and the concentric separation section 26 to circulate the concentric flow flowing out of the concentric rectification section 24 for the purpose of desired processing. Is done.

  When the concentric rectifying unit 24 and the concentric separating unit 26 are detachably fitted to the outer tube 22 as described above, a flow path failure occurs in the concentric rectifying unit 24 or the concentric separating unit 26. In addition, it can be easily removed from the outer tube 22 and cleaned. In addition, by removing the concentric rectifying unit 24 and the concentric separating unit 26 from the outer tube 22, the outer tube 22 can be easily cleaned. Thereby, high maintainability can be obtained. The concentric rectification unit 24 and the concentric separation unit 26 are not necessarily detachable, and may be fixed with an adhesive or the like when it is not necessary to detach them.

  Here, the desired treatment means a reaction operation in which fluids react with each other and a unit operation of the fluid (for example, mixing, extraction, separation, heating, cooling, heat exchange, crystallization, absorption). In addition, it is not limited to providing one pair of the concentric rectification part 24 and the concentric separation part 26 in the fluid circulation part 28, and a plurality of pairs of the concentric rectification part 24 and the concentric separation part 26 are provided. The rectification and separation may be performed in multiple stages.

  The concentric rectifying unit 24 and the concentric separating unit 26 are formed in the same structure, and are formed between the large-diameter circular tube 30 and the small-diameter circular tube 32 that are located outside of the circular tubes constituting the double tube structure. A plurality of centering circular pipes 36 (eight in FIG. 2) are densely arranged in the annular gap 34. Accordingly, it is necessary that the diameters of the large diameter circular pipe 30, the small diameter circular pipe 32, and the centering circular pipe 36 are set so that the plurality of centering circular pipes 36 are densely arranged in the annular gap 34. is there. The connecting supply pipe 38 is connected to the small diameter circular pipe 32 positioned at the center of the concentric rectifying unit 24, and the connecting discharge pipe 40 is connected to the small diameter circular pipe 32 positioned at the center of the concentric separating part 26. Is done. Here, a group of the centering circular pipes 36 is referred to as an annular group pipe 42. FIG. 2 shows a case where the fluid L1 is supplied into the small-diameter circular tube 32 located at the center of the concentric rectification unit 24 and the fluid L2 is supplied to the annular group tube 42 in the fluid device 12 formed in such a structure. . In addition, as shown in FIG. 3, when the outer tube 22 can be divided into two, when the concentric rectifying unit 24 and the concentric separating unit 26 are attached to and detached from the outer tube 22, the outer tube 22 can be further divided into two. Convenient for maintenance. That is, the convex portion 22a and the concave portion 22b are formed in the fitting portion between the one semicircular piece 22A and the other semicircular piece 22B divided into the outer tube 22, respectively, and the convex portion 22a and the concave portion 22b are fitted together. Good. After the outer tube 22 is formed by fitting, the front and rear positions in the length direction of the outer tube 22 may be fixed by a ring-shaped fixing member 29. However, the fitting structure and the fixing member are not limited to this, and may be any structure as long as the fluid does not leak from the outer tube 22.

  A plurality of round holes 44 corresponding to the number of the fluid devices 12 are opened on the front side surface and the rear side surface of the support case 14 shown in FIG. 1, and the front and rear portions of the fluid device 12 are fitted into the round holes 44. Match. Accordingly, the plurality of fluid devices 12 are supported by the support case 14 in a state where the fluid devices 12 partially protrude from the front side surface and the rear side surface of the support case 14. In this state, the pair of cover plates 16 are put on the upper opening 14 </ b> A and the lower opening 14 </ b> B of the support case 14 via the packing 17 and fastened with bolts 46. Further, the supply header 18 and the discharge header 20 are put on the front side and the rear side of the support case 14 via the packing 19 and connected by bolts 48. Thereby, a watertight sealed space is formed in the support case 14.

  The supply header 18 has a box shape in which the surface on the support case 14 side is open. On the opposite surface of the support case 14, the round holes 50 through which the connection supply pipe 38 described above passes are the number of the fluid devices 12. A plurality of openings are opened corresponding to The connection supply pipe 38 protrudes from the round hole 50, and the male member 52 of the first coupler (one-touch joint) is connected to the connection supply pipe 38. Then, by connecting a female member (not shown) of the first coupler provided at the tip of a supply tube (not shown) extending from a fluid pump (not shown) for supplying the fluid L1, a concentricity is obtained. The fluid L <b> 1 is supplied to the small diameter circular pipe 32 positioned at the center of the rectifying unit 24. A male member 56 of a second coupler is connected to the round hole 54 formed in the side surface of the supply header 18, and a supply tube (not shown) extending from a fluid pump (not shown) for supplying the fluid L2. 1) By connecting a female member (not shown) of the second coupler provided at the tip, the fluid L2 is supplied to the annular group tube 42 of the concentric rectification unit 24 through the supply header 18.

  The structure of the discharge header 20 is the same as that of the supply header 18. That is, the discharge header 20 has a box shape in which the surface on the support case 14 side is opened. On the opposite surface of the support case 14, a round hole 58 through which the connection discharge pipe 40 passes is formed in the fluid device 12. A plurality of openings are provided corresponding to the number. The connecting discharge pipe 40 protrudes from the round hole 58, and the male member 60 of the third coupler is connected to the connecting discharge pipe 40. And the female member (not shown) of the 3rd coupler provided in the front-end | tip of the discharge tube (not shown) is connected. As a result, the processing fluid that has been circulated through the fluid circulation portion 28 and has undergone a desired process such as a chemical reaction is separated as a concentric flow in the concentric separation portion 26, and forms an inner layer of the separated concentric flow. The fluid L3 to be discharged is discharged. Further, a male member 64 of a fourth coupler is connected to the round hole 62 formed in the side surface of the discharge header 20, and a female member (not shown) of the fourth coupler provided at the tip of the discharge tube (not shown). ), The outer layer fluid L4 separated as a concentric flow by the concentric separation unit 26 is discharged through the discharge header 20.

  In addition, a round hole 66 is formed in two places on the side surface of the watertight support case 14 described above, and a male member 68 of a fifth coupler is provided in one round hole 66 and a sixth coupler is provided in the other round hole 66. A male member 68 is provided. Then, a female member (not shown) of a fifth coupler and a sixth coupler respectively attached to the ends of a pair of tubes (not shown) from a heat medium circulating device (not shown) is connected to the male member 68. Accordingly, a temperature control circulation line for controlling the temperature of the fluid device 12 is formed by circulating the heat medium having a predetermined temperature between the support case 14 and the medium circulation device.

  In the fluid device unit 10 configured as described above, the concentric rectification unit 24 of the fluid device 12 includes a large-diameter circular tube 30 positioned outside and a small-diameter circle positioned inside the circular tube constituting the double-pipe structure. Since a plurality of centering circular pipes 36 are densely arranged in the annular gap 34 between the pipes 32, the central axes P of the large diameter circular pipe 30 and the small diameter circular pipe 32 coincide with each other. The large-diameter circular tube 30 and the small-diameter circular tube 32 can be positioned with high accuracy. That is, by arranging densely the centering circular pipes 36 having the same diameter in the annular gap 34, the centering action of the centering circular pipe 36 having a constant diameter in all directions works. As a result, the distance between the large diameter circular tube 30 and the small diameter circular tube 32 matches the diameter of the centering circular tube 36 at any position of the annular gap 34. Are arranged on the same central axis P. Moreover, even if the concentric rectifying unit 24 is cut in the radial direction at any position in the length direction (axial direction) of the concentric rectifying unit 24, the center of the large diameter circular tube 30 and the small diameter circular tube 32 in the cross section thereof. The axes P coincide. Thus, by aligning the central axes P of the large-diameter circular tube 30 and the small-diameter circular tube 32 at any position in the length direction of the concentric rectifying unit 24, as shown in FIG. 4, L1 (inner layer) And L2 (outer layer) can form an accurate two-layer concentric flow. In this case, when a through pipe 72 that connects the concentric rectifying unit 24 and the concentric separating unit 26 is provided on the central axis P of the concentric rectifying unit 24 and the concentric separating unit 26, as shown in FIG. Since the thickness of the (inner layer) can be reduced, the diffusion efficiency between L1 (inner layer) and L2 (outer layer) is improved.

  In order to form an accurate concentric flow, the concentricity of the large-diameter circular tube 30 and the small-diameter circular tube 32 (of each circular tube can be obtained by cutting at any position in the length direction of the concentric rectifying unit. The deviation of the central axis P) is preferably within 100 μm, more preferably within 50 μm, and particularly preferably within 10 μm. The concentricity can be achieved by forming the concentric rectification unit 24 in the above-described structure using a circular pipe with high diameter accuracy. Thereby, since the turbulent flow does not occur in the concentric flow that flows through the fluid circulation portion 28, a laminar concentric flow can be obtained with high accuracy. Therefore, since diffusion at the interface between the fluids L1 and L2 is performed uniformly, for example, in the case of a chemical reaction operation, the purity and yield of the generated chemical substance are improved.

  Further, by providing the concentric separation part 26 having the same structure as the concentric rectification part 24 in the outlet part of the outer tube 22, the fluid flowing through the fluid circulation part 28 can be separated as a concentric flow. In this case, since the central axes P of the concentric rectifying unit and the 24 concentric separating unit 26 can be made to coincide, when the fluid flowing through the fluid circulation unit 28 is separated into a concentric flow by the concentric separating unit 26. , And can be separated on the same central axis basis as the concentric rectification unit 24. That is, for example, when an accurate three-layer concentric flow is circulated to the fluid circulation unit 28 by the concentric rectification unit 24 and a product is generated in an intermediate layer portion of the three-layer concentric flow, the product is separated. If the center axis P of the concentric separation part 26 is displaced from the center axis P of the concentric rectification part 24, only the intermediate layer portion cannot be separated with high accuracy. However, since the central axes P of the concentric rectifying unit 24 and the concentric separating unit 26 can be matched as in the present invention, the intermediate layer portion can be separated with high accuracy. The same applies to the case where it is desired to accurately separate the inner layer and the outer layer of the three-layer concentric flow, and can be applied to the multilayer concentric flow. In this case, as shown in FIG. 6, in the concentric rectifying unit 24 and the concentric separating unit 26, the small-diameter circular tube 32 located at the center is shifted from the position of the outlet of the annular group tube 42 to the fluid circulation unit side. If it makes it protrude, a flow will be stabilized and the stable concentric flow will be formed. Moreover, the separation performance in the concentric separation part 26 is also improved.

  In FIG. 6, the small-diameter circular tube 32 located at the center is projected toward the fluid circulation portion, but conversely, it may be recessed from the position of the outlet of the annular group tube 42. Further, the concentric rectification unit 24 may project the small diameter circular tube 32 and the concentric separation unit 26 may dent the small diameter circular tube 32, or the concentric rectification unit 24 may dent the small diameter circular tube 32 and concentric. In the separation part 26, the small diameter circular pipe 32 may be protruded.

  The features of the concentric rectification unit 24 and the concentric separation unit 26 in the present invention described above are not limited to chemical reactions, but unit operations of fluids (for example, mixing, extraction, separation, heating, cooling, heat exchange, crystallization, absorption) ) Can also be applied. Moreover, although the above-mentioned concentric rectification | straightening part 4 is a type which forms a two-layer concentric flow, the way of thinking is the same also when forming a multilayer concentric flow.

  Next, in FIG. 7 to FIG. 10, various preferred embodiments of the concentric rectification unit 24 will be described, but they may be used as the concentric separation unit 26.

  The concentric rectifying unit 24 in FIG. 7 is configured so that the small diameter circular pipe 32 located at the center of the concentric rectifying unit 24 is displaced from the position of the outlet of the annular group pipe 42 as already described with reference to FIG. FIG. 8 shows a state in which the small-diameter circular tube is recessed from the position of the outlet of the annular group tube 42.

  The concentric rectification unit 24 in FIG. 9 is a mode suitable for forming a three-layer concentric flow with three types of fluids (L1, L2, L3), and includes a large-diameter circular tube 30, a medium-diameter circular tube 74, Two annular gaps 34 and 34 in a triple pipe structure constituted by the small diameter circular pipe 32 (between the large diameter circular pipe 30 and the medium diameter circular pipe 74 and between the medium diameter circular pipe 74 and the small diameter circular pipe 32. ), A plurality of centering pipes 36 (8 and 12 in FIG. 9) having the same diameter (the same outer diameter) are densely arranged along the annular gaps 34 and 34. Further, the concentric rectification unit 24 of FIG. 10 is a case where four centering circular pipes 36 are arranged at 90 ° intervals in the two annular gaps 34, 34 of FIG. 9. In this case, the minimum number of centering circular pipes 36 is three at intervals of 120 °. The large-diameter circular tube 30, the medium-diameter circular tube 74, the small-diameter circular tube 32, and the centering circular tube 36 are fixed so as not to move. As the fixing method, in addition to the adhesive and diffusion bonding, the convex portion and the concave portion in the axial direction are respectively provided on the large-diameter circular tube 30, the medium-diameter circular tube 74, the small-diameter circular tube 32, and the centering circular tube 36. May be relatively formed and fixed by fitting the ridges and the recesses together. Further, the fluid L2 or the fluid L3 may be supplied to the space between the centering circular pipes 36 in the annular gap 34. Further, when it is desired to increase the supply amount of the fluid L2 or the fluid L3 relative to the supply amount of the fluid L1, the fluid L2 or the fluid L3 may be supplied both in the centering tube 36 and in the space.

  In addition, in the case of the concentric rectifying unit 24 shown in FIGS. 7 to 13 other than FIG. 10, the adhesive or diffusion is the same as in FIG. 10 even if the circular tube or the square tube is closely packed and does not move. It may be fixed by fixing means such as joining or fitting, and any of them may be used.

  The concentric rectification unit 24 in FIG. 11 shifts the positions of the outlets of the three fluids L1, L2, and L3, narrows the diameter of the outlet of the small-diameter circular pipe 32 located at the center, and further reduces the diameter. In this embodiment, the outlet of the centering circular pipe 74 disposed in the annular gap 34 between the circular pipe 32 and the medium diameter circular pipe 74 is cut into a tapered shape. Thus, the flow is stabilized by shifting the positions of the outlets of the three fluids L1, L2, and L3, and a stable concentric flow is formed. In addition, the flow of the fluid flowing out can be stabilized by narrowing the outlet of the small-diameter circular pipe 32 located at the center or by cutting the outlet of the centering circular pipe 74 into a tapered shape. A flow can be formed.

  FIGS. 9 to 11 are embodiments suitable for forming a three-layer concentric flow of three types of fluids L1, L2, and L3, but are not limited to three types of fluids, but two types of fluids. The present invention can also be applied when forming a concentric flow of fluid. That is, among the three fluids L1, L2, and L3, the same type of fluid may be used for the fluid L1 and the fluid L2, so that a two-layer concentric flow may be used, and the same type of fluid is used for the fluid L2 and the fluid L3. By doing so, a two-layer concentric flow may be formed. Thereby, the thickness of each layer at the time of comprising a two-layer concentric flow can be changed.

  12 has a structure in which a large number of small diameter circular tubes 32, 32,... Are densely housed in a large diameter circular tube 30. One of them is arranged coaxially with the central axis P of the large diameter circular tube 30, and the remaining small diameter circular tubes 32B are arranged in an annular shape outside the single small diameter circular tube 32A located at the center. The tubular annular group 31 is formed in a structure in which at least one layer is laminated.

  As described above, when the concentric rectification unit 24 is configured, the first virtual circle that connects the center of the small-diameter circular tube 30A located at the center and the center of each small-diameter circular tube 32B that configures the first annular tube group 31A. It coincides with the center of (dotted line 76). Furthermore, it coincides with the center of the second imaginary circle (dotted line 78) connecting the centers of the small diameter circular pipes 32B constituting the second circular ring group 31B. The same applies to the case where the circular annular groups 31A and 31B are further increased. As a result, the small-diameter circular tube 32A located at the center, the first circular tube annular group 31A, and the second circular tube annular group 31B are arranged on the same central axis P, and therefore the small-diameter circular tube 32A at the central position. If the fluid L1 is supplied to the inside, the fluid L2 is supplied to the first annular tube group 31A, and the fluid L3 is supplied to the second annular tube group 31B, an accurate three-layer concentric flow flows out of the fluid circulation portion 28. Can be made.

  The concentric rectification unit 24 in FIG. 13 is an example of the concentric rectification unit 24 that forms a regular polygonal concentric flow, and forms a three-layer square concentric flow with three types of fluids L1, L2, and L3. It is. The concentric rectification unit 24 includes two square annular gaps 86 and 86 (large-sized in a triple pipe structure including a large-diameter square tube 80, a medium-diameter square tube 82, and a small-diameter square tube 84 having a square radial cross section. A plurality of tubes having a square radial cross section and the same diameter (the same outer diameter) (between the diameter square tube 80 and the medium diameter square tube 82 and between the medium diameter square tube 82 and the small diameter square tube 84) (FIG. 13). In this case, 8 and 20 centering square tubes 88 are densely arranged along the square annular gaps 86 and 86. Also in the case of the concentric rectification unit 24 having such a structure, the large-diameter square tube 80, the medium-diameter square tube 82, and the small-diameter square tube 84 are arranged on the same central axis P. The three-layer concentric flow can flow out to the fluid circulation part 28. In this case, the outer tube 22 forming the fluid circulation portion 28 also needs to be a square square tube. Although not shown, a small-diameter square tube having the same diameter (outer diameter is the same diameter) is densely accommodated in the large-diameter square tube, so that a grid-like flow path is formed in the large-diameter square tube. May be.

  The concentric rectification unit 24 and the concentric separation unit 26 do not need to have the same structure. For example, when forming an annular concentric flow, the structures described in FIGS. 2 to 12 are arbitrarily combined. be able to.

  Next, a process of manufacturing the fluid device 12 of the present invention will be described as an example of the fluid device 12 forming the two-layer concentric flow in FIG. 14A to 14C are steps for manufacturing the concentric rectification unit 24 and the concentric rectification unit 26, and FIG. 14D illustrates the manufactured concentric rectification unit 24, the concentric separation unit 26, and the like. FIG. 3 is a view in which the is attached to the outer tube 22 forming the fluid circulation portion 28. The concentric rectifying unit 24 and the concentric separating unit 26 have basically the same structure and are manufactured by the same manufacturing method. Therefore, here, an example in which the concentric rectifying unit 24 is manufactured will be described.

  The manufacture of the concentric rectification unit 24 mainly includes an original body manufacturing process, an extending process, and a cutting process.

  In the original body manufacturing process, as shown in FIG. 14 (A), a plurality of same diameters (in the annular gap 34 between the large-diameter circular tube 30 and the small-diameter circular tube 32 positioned outside in the double tube structure) An original body 90 having a structure in which the centering circular pipes 36, 36... Having the same outer diameter) are densely arranged along the annular gap 34 is manufactured. The original body 90 is manufactured in advance with a diameter larger than the final required diameter of the concentric rectifying unit 24. As can be seen from FIG. 14A, the original body 90 having such a structure has a small-diameter circular tube 32 and a centering circular tube 36 tightly accommodated in a large-diameter circular tube 30. A small diameter circular tube 32 and a centering circular tube 36 are arranged concentrically around the central axis. Therefore, even if it is extended in the next extension step, the overall cross-sectional shape is the same only by thinning the whole. The diameter of the large-diameter circular tube 30 in the original body 90 is preferably in the range of about 10 mm to 50 mm, for example. As the material of the tube, a metal (for example, a stainless steel material), a resin, glass or the like can be preferably used.

  Next, in the stretching process, as shown in FIG. 14B, the manufactured original body 90 is elongated in the longitudinal direction, and the cross-sectional area of the original body 90 is reduced so as to finally have a required diameter. In this case, it is preferable to heat the original body 90 to a temperature at which it can be easily stretched by the material of the tube to be used, such as a stainless steel material, a resin material, or a glass material. Thus, the elongated original body 90 'is manufactured. The diameter of the elongated original body 90 ′ is preferably a diameter capable of forming a laminar concentric flow in the fluid circulation portion 28, and is preferably 10 mm or less in the large-diameter circular tube 30 ′ after elongation. Is more preferable.

  Next, in the cutting step, as shown in FIG. 14C, the elongated original body 90 ′ is cut to the required length of the concentric rectifying unit 24. Thereby, the concentric rectification unit 24 is manufactured. Since a plurality of the concentric rectifying units 24 are manufactured, one of them may be used as the concentric separating unit 26, and the other concentric rectifying unit shown in FIGS. 26 may be used.

  14D, the manufactured concentric rectifying unit 24 is detachably fitted into the inlet portion of the outer tube 22, and the concentric separating unit 26 is attached to and detached from the outlet portion of the outer tube 22. As shown in FIG. Fit freely. Thereby, the fluid device 12 is manufactured.

  In the manufacturing method of the concentric rectification unit 24 described above, the outer tube (for example, a large-diameter circular tube) is connected to the inner tube (for example, a small-diameter circular tube, a centering circular tube) in order to extend the original body 90 with high accuracy. As long as the structure is closely packed, a circular tube is not necessary, and a regular square tube may be used as shown in FIG.

    Thereby, even if it is the micro concentric rectification part 24 and the concentric flow 26 which are 10 mm or less in diameter, it can be easily manufactured by machining and does not require a special processing method, for example, fine electrical discharge machining. . Therefore, the fluid device 12 having a micro channel can be manufactured easily and at low cost. Moreover, the diameter dimension of the concentric rectification | straightening part 24 or the concentric separation part 26 can be changed easily by changing the expansion | extension rate which expands the original body 90 at an expansion | extension process. Furthermore, when creating a fluid device 12 having a high aspect ratio (flow path length / equivalent diameter), it can be easily handled by adjusting the elongation rate in the stretching process and the cutting length to be cut in the cutting process. Can do.

  In the present embodiment, the original body 90 is manufactured in advance to have a diameter larger than the final required diameter of the concentric rectification unit 24, and is explained by reducing the final required diameter in the extension process. . However, when the original body 90 is manufactured so as to have a final required diameter of the concentric rectifying unit 24, the extension process can be omitted, and the original body 90 is cut to a required length in the cutting process. do it.

  Next, an embodiment of the present invention will be described using an example in which a three-layer concentric flow is formed by three types of fluids L1 (inner layer), L2 (intermediate layer), and L3 (outer layer). The fluid device 12 is obtained by fitting a concentric rectifying unit 24 and a concentric separating unit 26 having the structure shown in FIG. 9 into the inlet portion and the outlet portion of the outer tube 22 forming the fluid circulation portion 28, respectively. It was used. The concentric rectifying unit 24 and the concentric separating unit 26 were manufactured by the above-described manufacturing method, and in the cutting process, the elongated original body 90 ′ was cut to a length of 5 mm. The manufactured concentric rectifying unit 24 and concentric separating unit 26 have a large-diameter circular tube 30 having an outer diameter of 2.5 mm and an inner diameter of 2.0 mm, and a small-diameter circular tube 32 having an outer diameter of 0.925 mm, an inner diameter of 0.71 mm, and a core. The take-out pipe (using 8 tubes) had an outer diameter of 0.54 mm and an inner diameter of 0.35 mm. The material of the tube was SUS316.

  The manufactured concentric rectifying unit 24 and the concentric separating unit 26 are not particularly precisely positioned, but are cut at a plurality of locations in the length direction to form the concentricity of the large diameter circular tube 30 and the small diameter circular tube 32 (each other The amount of deviation of the central axis P of the circular tube was measured and found to be within 5 μm.

  Then, five fluid devices 12 were assembled to the support case 14 to complete the fluid device unit 10, and a test for producing a photosensitive emulsion was performed.

  In the test, a silver nitrate aqueous solution was used as the fluid L1, a gelatin aqueous solution as the fluid L2, and a halogen salt aqueous solution as the fluid L3. The aqueous silver nitrate solution L1 and the aqueous halogen salt solution L3 were adjusted to a concentration at which the reaction was completed at a volume ratio of 1: 1. Further, in each of the fluids L1, L2, and L3 flowing out from the concentric rectifying unit 24 and flowing as a concentric flow in which the fluid circulation unit 28 is laminarized, the silver nitrate aqueous solution L1 and the halogen salt aqueous solution L3 have the same flow velocity and the same. It was set so that the reaction with the gelatin aqueous solution L2 was completed at the timing. In addition, when there is a flow velocity difference between the silver nitrate aqueous solution L1 and the halogen salt aqueous solution L3 due to the influence of the viscosity of each fluid L1, L2, L3, the shear resistance generated between the inner wall surface of the fluid circulation portion 28, etc. The reaction conditions in the aqueous gelatin solution L2 were optimized by adjusting the concentration and the pressure at which the fluid was supplied.

  According to the embodiment implemented in this manner, the concentric rectification unit 24 causes the fluids L1, L2, and L3 to flow out to the fluid circulation unit 28 as an accurate laminar three-layer concentric flow. The inner layer silver nitrate aqueous solution L1 and the outer layer halogen salt aqueous solution L3 constituting the three-layer concentric flow diffuse and react with the intermediate layer gelatin aqueous solution L2 in the process of flowing through the photosensitive layer. Was generated. In the concentric separation part 26, the inner layer, the intermediate layer, and the outer layer were separated as a concentric flow, and a high-purity photosensitive emulsion could be obtained in the intermediate layer portion.

  Further, when the photosensitive emulsion was produced, the produced photosensitive emulsion did not adhere to the outlet of the concentric rectifying unit 24 and the inner wall of the fluid circulation unit 28, and stable production could be performed.

  Furthermore, in the comparison of the production cost between the three-fluid type fluid device 12 of the present invention and the fluid device described in Patent Document 2 of the prior art, the fluid device 12 of the present invention is about ½. A photosensitive emulsion could be produced at a low cost.

Exploded view illustrating the overall configuration of a fluid device unit in which a plurality of fluid devices manufactured according to the present invention are assembled. Explanatory drawing of a fluid device that is an example of a fluid device and is suitable for two types of fluid Explanatory drawing which made outer shell which forms fluid circulation part into 2 division structure Illustration of two-layer concentric flow of inner and outer layers Sectional drawing of the fluid circulation part when the penetration pipe which penetrates the central axis of a concentric rectification part and a concentric separation part is provided Explanatory drawing explaining another aspect of a fluid device Explanatory drawing explaining the one aspect | mode of the concentric rectification | straightening part which uses a circular pipe Explanatory drawing explaining another aspect of the concentric rectification | straightening part which uses a circular pipe Explanatory drawing explaining another aspect of a concentric rectification | straightening part. Explanatory drawing explaining the further another aspect of the concentric rectification | straightening part which uses a circular pipe. Explanatory drawing explaining the further another aspect of the concentric rectification | straightening part which uses a circular pipe. Explanatory drawing explaining the further another aspect of the concentric rectification | straightening part which uses a circular pipe. Explanatory drawing explaining further another aspect of the concentric rectification | straightening part which uses a regular square tube. Explanatory drawing explaining the manufacturing method of the fluid device of this invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Fluid device unit, 12 ... Fluid device, 14 ... Support case, 16 ... Cover plate, 18 ... Supply header, 20 ... Outlet header, 22 ... Outer tube, 24 ... Concentric rectification part, 26 ... Concentric separation part, DESCRIPTION OF SYMBOLS 28 ... Fluid distribution part, 30 ... Large diameter circular pipe, 32 ... Small diameter circular pipe, 34 ... Circular gap, 36 ... Centering circular pipe, 38 ... Connection supply pipe, 40 ... Connection discharge pipe, 42 ... Ring group Pipes 44 ..., 50, 54, 58, 62, 66 ... Round holes, 46, 48 ... Bolts, 52, 56, 60, 64, 68, 70 ... Male coupler members, 80 ... Large-diameter square tubes, 82 ... Medium diameter square tube, 84 ... small diameter square tube, 86 ... square annular gap, 88 ... centering square tube, 90 ... original shape, 90 '... extension original shape

Claims (16)

A concentric rectification unit that rectifies a plurality of supplied fluids so that a concentric flow is formed, and a fluid circulation unit that circulates the concentric flow that flows out of the concentric rectification unit for a desired process. In a manufacturing method of a fluid device,
Production of the concentric rectification unit of the fluid device is as follows.
A plurality of centering pipes are arranged along the annular gap in an annular gap between a large-diameter pipe located outside and a small-diameter pipe located inside the large-diameter pipe in a multiple pipe structure of double pipes or more. The original body manufacturing process for manufacturing the original body having a structure in which the central axis of the large-diameter pipe and the central axis of the small-diameter pipe are made to have a diameter larger than the final required diameter of the concentric rectifying unit. When,
Elongating the produced original body in the longitudinal direction to reduce the cross-sectional area of the original body to the final required diameter;
And a cutting step of cutting the elongated original body into a necessary length of the concentric rectification unit.   2. The method of manufacturing a fluid device according to claim 1, wherein the large-diameter pipe, the small-diameter pipe, and the centering pipe are circular pipes having a circular cross-sectional shape.   2. The method of manufacturing a fluid device according to claim 1, wherein the large-diameter tube, the small-diameter tube, and the centering tube are polygonal tubes having a regular polygonal cross-sectional shape.   4. The method of manufacturing a fluid device according to claim 3, wherein the polygonal tube is a square square tube.   The method for manufacturing a fluid device according to claim 1, wherein the centering pipes are densely arranged in the annular gap. A concentric rectification unit that rectifies a plurality of supplied fluids so that a concentric flow is formed, and a fluid circulation unit that circulates the concentric flow flowing out of the concentric rectification unit for a desired process. In a manufacturing method of a fluid device,
Production of the concentric rectification part of the fluidic device,
A large-diameter pipe has a structure in which a plurality of small-diameter pipes having the same diameter are densely accommodated, and one of the many small-diameter pipes is arranged coaxially with a central axis of the large-diameter pipe. The original shape of the concentric rectification unit is finally required to have a structure in which at least one annular ring group in which the remaining small-diameter pipes are annularly arranged outside the single small-diameter pipe located at the center is laminated. Original body production process to make larger diameter than the diameter,
Elongating the produced original body in the longitudinal direction to reduce the cross-sectional area of the original body to the final required diameter;
And a cutting step of cutting the elongated original body into a necessary length of the concentric rectification unit.   7. The method of manufacturing a fluid device according to claim 6, wherein the large-diameter pipe and the small-diameter pipe are circular pipes having a circular cross-sectional shape.   The method of manufacturing a fluid device according to claim 6, wherein the large-diameter pipe and the small-diameter pipe are polygonal pipes having a regular polygonal cross-sectional shape.   9. The method of manufacturing a fluid device according to claim 8, wherein the polygonal tube is a square square tube.   The fluid according to any one of claims 1 to 9, wherein, in the extension step, the original body is extended so that the concentric rectification portion has a cross-sectional area capable of forming a concentric flow of laminar flow. How to make a device.   The method of manufacturing a fluid device according to any one of claims 1 to 10, wherein in the extension step, the extension is performed so as to be in a range of 1/5 to 1/25 of a diameter of the original body.   In the stretching step, the original body is stretched in multiple stages, and the fluid device manufacturing method according to any one of 1 to 11, wherein: A concentric rectification unit that rectifies a plurality of supplied fluids so that a concentric flow is formed, and a fluid circulation unit that circulates the concentric flow flowing out of the concentric rectification unit for a desired process. In a manufacturing method of a fluid device,
Production of the concentric rectification unit of the fluid device is as follows.
A plurality of centering pipes are arranged along the annular gap in an annular gap between a large-diameter pipe located outside and a small-diameter pipe located inside the large-diameter pipe in a multiple pipe structure of double pipes or more. An original body manufacturing process for manufacturing an original body having a structure in which the central axis of the large-diameter pipe and the central axis of the small-diameter pipe are matched,
A cutting step of cutting the original body into a required length of the concentric rectification unit. A concentric rectification unit that rectifies a plurality of supplied fluids so that a concentric flow is formed, and a fluid circulation unit that circulates the concentric flow that flows out of the concentric rectification unit for a desired process. In a manufacturing method of a fluid device,
Production of the concentric rectification part of the fluidic device,
A large-diameter pipe has a structure in which a plurality of small-diameter pipes having the same diameter are densely accommodated, and one of the many small-diameter pipes is arranged coaxially with a central axis of the large-diameter pipe. An original body production process for producing an original body having a structure in which at least one or more layers of annular ring groups in which the remaining small diameter pipes are arranged in an annular manner are arranged outside the single small diameter pipe located at the center;
A cutting step of cutting the original body into a required length of the concentric rectification unit.   The method of manufacturing a fluid device according to claim 1, wherein the manufactured concentric rectifying portion is detachably fitted into an inlet portion of an outer tube forming the fluid circulation portion. A concentric separation part that separates the fluid flowing through the fluid circulation part as a concentric flow is produced in the same manner as the concentric rectification part, and the produced concentric separation part is detachably fitted into the outlet part of the outer tube. The method of manufacturing a fluidic device according to any one of claims 1 to 15, wherein:

Images