WO2011155562A1 - 流路部材およびこれを用いた熱交換器ならびに電子部品装置 - Google Patents
流路部材およびこれを用いた熱交換器ならびに電子部品装置 Download PDFInfo
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- WO2011155562A1 WO2011155562A1 PCT/JP2011/063250 JP2011063250W WO2011155562A1 WO 2011155562 A1 WO2011155562 A1 WO 2011155562A1 JP 2011063250 W JP2011063250 W JP 2011063250W WO 2011155562 A1 WO2011155562 A1 WO 2011155562A1
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- Prior art keywords
- flow path
- side wall
- gap
- path member
- ceramic green
- Prior art date
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Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/12—Mountings, e.g. non-detachable insulating substrates
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/02—Tubular elements of cross-section which is non-circular
- F28F1/04—Tubular elements of cross-section which is non-circular polygonal, e.g. rectangular
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0272—Adaptations for fluid transport, e.g. channels, holes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/003—Rigid pipes with a rectangular cross-section
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/46—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids
- H01L23/473—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids by flowing liquids
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0201—Thermal arrangements, e.g. for cooling, heating or preventing overheating
- H05K1/0203—Cooling of mounted components
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/46—Manufacturing multilayer circuits
- H05K3/4611—Manufacturing multilayer circuits by laminating two or more circuit boards
- H05K3/4626—Manufacturing multilayer circuits by laminating two or more circuit boards characterised by the insulating layers or materials
- H05K3/4629—Manufacturing multilayer circuits by laminating two or more circuit boards characterised by the insulating layers or materials laminating inorganic sheets comprising printed circuits, e.g. green ceramic sheets
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/46—Manufacturing multilayer circuits
- H05K3/4697—Manufacturing multilayer circuits having cavities, e.g. for mounting components
Definitions
- the present invention relates to a flow path member, a heat exchanger using the same, and an electronic component device.
- the flow path member disclosed in Patent Document 1 is a circuit board formed by firing a plurality of laminated sheets, and has a substantially circular cross-section refrigerant flow path formed therein for passing a refrigerant. Yes.
- the present invention has been devised to solve the above-described problems, and provides a flow path member in which the volume of the flow path is increased to improve heat exchange efficiency, a heat exchanger using the flow path member, and an electronic component device. It is for the purpose.
- the flow path member of the present invention includes a lid body part, a side wall part, and a bottom plate part, and has a flow path through which a fluid flows, and is connected to the flow path between the lid body part and the side wall part. It is characterized by having a gap.
- the heat exchanger of the present invention is characterized in that a metal plate is provided on the lid portion of the flow path member.
- the electronic component device of the present invention is characterized in that an electronic component is mounted on the metal plate.
- the flow path member is configured by the lid body part, the side wall part, and the bottom plate part, and has a flow path through which the fluid flows, and the flow path between the lid body part and the side wall part. Therefore, when a heat exchange object is mounted and used on the lid part side of such a flow path member, there is a gap connected to the flow path between the lid part and the side wall part. By being present, the volume of the flow path through which the fluid flows increases, and the efficiency of heat exchange with the lid portion can be increased.
- a metal plate for mounting a heat exchange object is provided on the outer surface of the lid member of the flow path member of the present invention.
- An exchange can be provided.
- the electronic component device of the present invention since the electronic component is mounted on the heat exchanger of the present invention, an electronic component device with high heat exchange efficiency can be provided.
- FIG. 1 An example of the flow path member of this embodiment is shown, (a) is a perspective view showing a cross section perpendicular to the length direction of the flow path, (b) is a partially enlarged view in a circle surrounded by a broken line in (a) FIG.
- the other example of the flow path member of this embodiment is shown, (a) is a perspective view showing a cross section perpendicular to the length direction of the flow path, (b) is in a circle surrounded by a broken line of (a) It is a partial enlarged view.
- FIG. 1 The example of the method for processing the through-hole used as a flow path in the ceramic green sheet for comprising the side wall part of the flow-path member of this embodiment is shown, (a) is a cross-sectional schematic diagram when using a metal mold
- the flow-path member of this embodiment is shown, (a) is a side view, (b) is sectional drawing.
- FIG. 1 shows an example of a flow path member of the present embodiment
- (a) is a perspective view showing a cross section perpendicular to the length direction of the flow path
- (b) is in a circle surrounded by a broken line in (a).
- the flow path member 1 of the present embodiment is configured by a lid portion 1a, a side wall portion 1c, and a bottom plate portion 1b, in which an electronic component is cooled.
- a flow path 3 for flowing a fluid such as gas or liquid is provided, and a gap 4 connected to the flow path 3 is provided between the lid portion 1a and the side wall portion 1c.
- the lid member 1a, the side wall 1c, and the bottom plate 1b are configured to have the flow channel 3 through which the fluid flows, and the lid 1a and the side wall 1c. It is important to have a gap 4 connected to the flow path 3 between them.
- the gap 4 connected to the flow path 3 is provided between the lid portion 1a and the side wall 1c for forming the flow path 3 through which the fluid flows.
- the volume of the flow path is larger than when no cover 4 is provided and the heat exchange object is mounted on the lid body 1a side of the flow path member 1, the heat exchange efficiency between the lid 1a and the fluid is increased. Can be increased.
- the manufacturing process of the flow path member 1 when individually manufacturing the plate-like body that becomes the lid portion 1a and the side wall portion 1c, it is necessary to previously form a through-hole that becomes the flow passage 3 in the plate-like body. However, when manufacturing a through hole, burrs are likely to occur at least on the end face of the through hole.
- the lid body portion 1a, the side wall portion 1c, and the bottom plate portion 1b are Even if the flow path member 1 having a flow path for fluid to flow by laminating, pressurizing, bonding and firing is manufactured, there is less possibility that the burr 1f will fit in the gap 4 and be caught in the joint 1d, resulting in poor bonding. Generation can be reduced. As a result, even if a fluid is passed through the flow path member 1 at a high pressure, the occurrence of breakage from the inside of the flow path 3 can be suppressed.
- FIG. 2 shows another example of the flow path member of the present embodiment, (a) is a perspective view showing a cross section perpendicular to the length direction of the flow path, and (b) is surrounded by a broken line in (a). It is the elements on larger scale in an ellipse.
- the flow path member 11 is a laminate of a plurality of side walls 1c in which a through-hole serving as the flow path 3 is formed in a plate-like body. It is made.
- the gap 4 connected to the flow path 3 is provided between the lid 1a and the side wall 1c (joint 1d), and further, flows between the plate-like bodies of the side wall 1c (joint 1d). A gap 4 that leads to the path 3 is provided.
- the lid portion 1 a, the side wall portion 1 c and the bottom plate portion 1 b can be made of ceramics.
- each member with ceramics for example, it can be manufactured by firing a laminate in which unfired ceramic green sheets are laminated.
- a through-hole to be an arbitrary flow path 3 may be formed in advance in a plate-like body of an unfired ceramic green sheet that will be the side wall 1c.
- the through-hole corresponding to each plate-shaped body is provided.
- a ceramic green sheet in such an unfired state formed with through holes and a ceramic green sheet for closing the upper and lower sides of the through holes were prepared, and these ceramic green sheets were laminated and pressed.
- the flow path member 11 can be obtained by firing later.
- the material of the flow path member 1 is ceramic.
- the lid portion 1a is ceramic and the side wall portion 1c is other material such as aluminum or copper. The effect of can be obtained.
- FIG. 3 is a cross-sectional view showing an example of the gap of the flow path member of the present embodiment, where (a) is rectangular, (b) is trapezoidal, and (c) is the gap on the side wall portion side. It is a figure which shows the shape where the height of the direction opened up and down becomes low toward the extending direction.
- each of the gaps 4 has a rectangular shape and a trapezoidal shape.
- the shape of the gap 4 is a rectangular shape or a trapezoidal shape
- a through hole that becomes the flow path 3 is formed in the ceramic green sheet in the through hole manufacturing process for configuring the flow path 3
- the joint portion 1d of the side wall 1c is connected to the flow path 3 side. Since there is a gap 4 that opens in the shape of a rectangle or trapezoid with a constant depth 4a and a maximum height 4b, it is possible to reduce the occurrence of burrs in the gap 4 and being caught in the joint 1d. Therefore, even when the lid body portion 1a, the side wall portion 1c, and the side wall portion 1c are formed by stacking a plurality of plate-like bodies, it is possible to suppress the occurrence of poor bonding, cracks, and flow path destruction.
- the gap 4 has a joint portion 1d between the lid portion 1a and the side wall portion 1c and the side wall portion.
- the height in the direction of opening up and down becomes lower in the direction extending toward the side wall portion 1c (hereinafter referred to as a triangular shape). ) It has a gap 4.
- the through hole that becomes the flow path 3 is formed in the ceramic green sheet by, for example, a mold.
- a portion to be chamfered at the time of punching a through hole into a ceramic green sheet is formed by pressing with a protruding punch. According to such a method, the volume of the chamfered part is pushed into the nearest part of the chamfer, increasing the density of the ceramic green sheet, and part of it enters the clearance between the punch and the die of the mold and enters the through hole. It tends to appear as burrs on the end face.
- the triangular shape has a smaller pressing volume, so the burrs that inevitably occur on the end face of the through hole tend to be smaller, and these ceramic green sheets are laminated and pressed to join.
- the gap 4 since the gap 4 has a triangular shape, the contact area between the fluid and the flow path member 1 is increased, and the heat exchange efficiency can be improved.
- the triangular shape of the gap 4 may be a substantially triangular shape including a wedge shape or a hook shape.
- the gap has a maximum height in the direction of opening up and down, with the depth in the direction extending to the side wall portion being a.
- the thickness is b, it is preferable that a> b.
- Each of the flow path members shown in FIGS. 1B, 2B, 3A, and 3B is formed on the end face 1g on the flow path 3 side of the joint portion 1d of the lid portion 1a and the side wall portion 1c.
- the end face of the through hole of the ceramic green sheet is chamfered in the through hole manufacturing process for forming the flow path 3.
- the maximum height 4b of the gap 4 in the flow path member 1 is increased, the height of the burr 1f generated on the end surface 1c tends to increase.
- the height of the gap is increased by punching through holes in the ceramic green sheet during die processing, the high density of the chamfered volume tends to concentrate near the end surface of the ceramic green sheet, and the punch of the die Part of the ceramic green sheet bites into the clearance between the screw and the mouse, and the height of the generated burr increases. Therefore, when the ceramic green sheets are stacked, there is a high possibility that the burr 1f is sandwiched between the joints 1d. Therefore, when the depth 4a of the gap 4 is a and the maximum height 4b in the direction of opening up and down is b, It is preferable to satisfy the relationship of a> b.
- the burr 1f is accommodated in the gap 4 and is less likely to be sandwiched in the joint 1d, so that it is possible to suppress the occurrence of poor bonding, cracks, and breakage of the flow path 3. Furthermore, since the depth 4a is longer than the maximum height 4b of the gap 4, the fluid that has entered the gap 4 is likely to stay (generates a vortex in the gap 4 by flowing along the surface), and the fluid and the flow path member 1 The heat exchange efficiency with can be improved.
- the depth of the gap is 0.03 mm or more and 0.08 mm or less.
- the depth 4a of the gap 4 of the flow path member 1 is 0.03 mm or more, there is a risk that the burr 1f of the end face 1g generated in the manufacturing process of the through hole for constituting the flow path 3 reaches the joint 1d and enters. This can be further reduced, and the occurrence of defective bonding can be further reduced. Furthermore, by increasing the depth 4a, the surface area of the flow path 3 can be increased, and the efficiency of heat exchange between the fluid and the flow path member 1 can be improved. If the depth 4a of the gap 4 is 0.08 m or less, a plurality of ceramic green sheets having through holes to be the flow paths 3 are laminated and added in the through hole manufacturing process for forming the flow paths 3.
- the applied pressure sufficiently propagates to the joint 1d, so that it is possible to suppress the occurrence of joint failure. And even if a fluid is supplied to the flow path member 1 obtained by firing at a high pressure, it is possible to prevent the gap 4 from starting and cracking from occurring and the flow path 3 from being broken.
- the flow path member 1 according to the present embodiment is less likely to be peeled off or cracked at the joint portion 1d between the lid portion 1a and the side wall portion 1c, and even when a fluid is flowed at a high pressure. 3 can be prevented from being broken. Furthermore, since the heat exchange efficiency is high, as a channel member for cooling of a semiconductor device or a semiconductor manufacturing device, as a channel member for heat exchange of a semiconductor manufacturing device that repeats heating and heating, It can be used as an ink flow path member for heat exchangers and printers.
- FIG. 4 is a perspective view showing an example of a heat exchanger in which a metal plate is provided on the outer surface of the lid portion of the flow path member of the present embodiment.
- the heat exchanger 20 of the present embodiment shown in FIG. 4 is provided with a metal plate 5 joined to the outer surface of the lid portion 1a of the flow path member 1 of the present embodiment having a flow path 3 through which a fluid flows. .
- the metal plate 5 is bonded to the outer surface of the lid portion 1a, the heat exchange with the fluid can be easily performed by mounting the heat exchange object on the metal plate 5.
- FIG. 5 is a perspective view showing an example of an electronic component device 30 in which the electronic component 6 is mounted on the metal plate 5 of the heat exchanger 20 of the present embodiment, and a fluid serving as a refrigerant in the flow path of the flow path member 1.
- the electronic component 6 can be effectively cooled, the occurrence of flow path destruction is small, and the electronic component device 30 with high heat exchange efficiency can be provided.
- the electronic component device 30 is useful as a device that generates high heat during operation, such as a semiconductor module such as a PCU, a semiconductor device of a high-power LED headlamp, a DC high-voltage power supply device, and a switching device.
- the flow path member 1 can be made of a metal such as aluminum or copper, or a ceramic material.
- the ceramic material is alumina. , Zirconia, silicon nitride, silicon carbide, aluminum nitride, or a composite thereof can be used.
- alumina is preferable in consideration of insulation properties and material costs.
- a material containing silicon oxide or the like and having an alumina content of 94 to 97% by mass is particularly preferable in view of firing costs because sintering is performed at a relatively low temperature.
- aluminum oxide (Al 2 O 3 ) powder having an average particle diameter of about 1.4 to 1.8 ⁇ m, silicon oxide (SiO 2 ), at least one powder of calcium oxide (CaO) and magnesium oxide (MgO),
- SiO 2 silicon oxide
- CaO calcium oxide
- MgO magnesium oxide
- a mixed powder of polyethylene glycol is weighed and mixed so that the mixing ratio of each powder is 96.4% by mass of aluminum oxide, 2.3% by mass of silicon oxide, 0.3% by mass of calcium oxide and 1.0% by mass of magnesium oxide. It is put into a rotary mill together with a binder consisting of and mixed with high-purity alumina balls.
- the added amount of the binder is about 4 to 8% by mass with respect to 100% by mass of the mixed powder.
- the amount of the binder added is in the range of about 4 to 8% by mass with respect to 100% by mass of the mixed powder, the strength and flexibility of the molded body are good, and the molding binder is not degreased during firing. Insufficient defects can be suppressed.
- a binder such as polyvinyl alcohol, polyethylene glycol, acrylic resin or butyral resin is added to this in an amount of 4 to 8% by mass with respect to 100% by mass of the mixed powder, and mixed to obtain a slurry.
- the addition amount of the binder is about 4 to 8% by mass with respect to 100% by mass of the mixed powder, the strength and flexibility of the molded body are good, and the molding binder is not sufficiently degreased during firing. Can be suppressed.
- a ceramic green sheet is formed by a doctor blade method or a roll compaction method, which is a general ceramic forming method, and then punched out with a mold for forming a product shape. Is produced.
- the ceramic green sheets to be laminated are preferably used in the same lot in order to reduce deformation and warpage due to shrinkage differences during firing and the occurrence of cracks.
- FIG. 6 shows an example of a method for processing a through-hole serving as a flow path in a ceramic green sheet for constituting the side wall portion of the flow path member of the present embodiment, (a) when using a mold (B) is a schematic cross-sectional view when a laser beam is used, and (c) and (d) are perpendicular to the cut surface of the ceramic green sheet when each processing method is used. It is a fragmentary sectional view of a surface.
- the ceramic green sheet 7 is punched with a mold 21 to form a rectangular chamfer 7c ′ on the end surface 7b ′ of the punched ceramic green sheet 7 as shown in FIG. 6C. can do.
- the upper and lower punches 22 are held while the ceramic green sheet 7 is held between the convex portions 22c.
- a rectangular chamfer 7 c ′ can be formed on the end surface 7 b ′ of the ceramic green sheet 7.
- the chamfer 7c ' is trapezoidal, C-plane or R-plane, it is possible to change the shape of the convex portion 22c of the punch 22 by the same method. Further, if the mold 21 without the convex portion 22c of the lower punch 21c is used, the rectangular chamfer 7c 'can be formed only on the upper punch 22a side of the end surface 7b' of the ceramic green sheet 7.
- a chamfer 8c ' can be formed on the end surface 8b' of the ceramic green sheet 8 as shown in (d) by laser processing of the ceramic green sheet.
- the laser light 26 is irradiated to the ceramic green sheet 7 through the condenser lens 28.
- the spot 27 is adjusted to be near the center of the thickness of the ceramic green sheet 8
- the end surface 8b ′ of the ceramic green sheet 8 is adjusted.
- the laser light source may be a CO 2 laser, YAG laser, excimer laser, or the like.
- the oscillation frequency of the laser light 26 is 2000 Hz.
- the pulse duty is 70 to 80% (signal ON time ratio) and the moving speed of the laser beam 26 on the ceramic green sheet 8 is 8 to 10 m / min, a desired shape can be cut.
- chamfering 8c ′ is formed only on one side of the upper and lower surfaces of the end surface 8b ′ of the ceramic green sheet 8
- the focal point of the spot 27 of the laser light 26 is focused on the surface of one of the upper and lower surfaces of the ceramic green sheet 8. You just need to match.
- a plurality of ceramic green sheets 7 or 8 manufactured in this way are stacked so as to form a desired flow path 3 ′.
- a pressure of about 0.5 MPa is applied through a flat plate-shaped pressurizing tool, and then about Dry at room temperature of 50-70 ° C. for about 10-15 hours.
- the laminated ceramic green sheets to be the flow path member 1 are fired in, for example, a known pusher type or roller type continuous tunnel furnace.
- the firing temperature differs depending on the material, if the material has an alumina content of 94 to 97% by mass, it may be fired in an oxidizing atmosphere at a maximum temperature of about 1500 to 1650 ° C.
- the lid that seals the through holes to form the flow path
- the thickness of the body part 1a is preferably as thin as possible in order to improve the efficiency of heat exchange, and is preferably about 0.3 to 0.5 mm when the alumina content is 94 to 97% by mass.
- the flow path member 1 is manufactured as described above, and an electronic component 6 such as an LSI or LED is mounted on the flow path member 1 via the metal plate 5 so that a refrigerant such as a gas or a liquid is flowed through the flow path member 1.
- the electronic component 6 can be cooled by passing through.
- the flow path member 1 of the present embodiment can be used not only for cooling purposes but also for a wide range of uses such as thermal applications.
- the flow path member 12 of the present embodiment shown in FIG. 7A has a full length L, a height H, a width D, one lid body 1a having a thickness t1, and a sidewall having a thickness t2. Three portions 1c and one bottom plate portion 1b having a thickness t3 are stacked, and two rectangular flow paths 3 are formed inside. Then, as shown in FIG.
- a chamfer 1e that becomes a gap 4 is attached to an end face 1g of the side wall 1c that forms the flow path 3, and a joint 1d between the lid 1a and the side wall 1c and A gap 4 having a depth 4a and a maximum height 4b that is open to the flow path 3 is formed at a joint 1d between the side wall 1c and the bottom plate 1b.
- the distance from the outside of the flow path member 12 to the flow path 3 is indicated by B and G
- the width of the flow path 3 is indicated by C and F
- the distance between the adjacent flow paths 3 is indicated by E.
- Al 2 O 3 As aluminum oxide (Al 2 O 3 ), a powder having an average particle diameter of about 1.6 ⁇ m, silicon oxide (SiO 2 ), calcium oxide (CaO), and magnesium oxide (MgO) are prepared.
- the mixed powder was weighed and mixed so that the mixing ratio of each powder was 96.4% by mass of aluminum oxide, 2.3% by mass of silicon oxide, 0.3% by mass of calcium oxide, and 1.0% by mass of magnesium oxide.
- a binder composed of 6% by mass of polyethylene glycol into a rotary mill and mixed with high-purity alumina balls.
- a binder such as an acrylic resin is added to 100% by mass of the mixed powder and mixed to obtain a slurry.
- a sheet-shaped ceramic green sheet is manufactured from the obtained slurry by a known doctor blade method, and further, individual ceramics are formed using a mold so that a product shape is obtained when the ceramic green sheets are laminated. Make a green sheet.
- the flow path member 12 has a length L of 200 mm, a height H of 4.5 mm, a width D of 12 mm, a thickness t1 of the lid portion 1a of 0.5 mm, and thicknesses of the other side wall portion 1c and bottom plate portion 1b.
- the distances B and G from the outside of the flow path member 12 shown in FIG. 7B to the flow path 3 are 3 mm, the widths C and F of the flow path 3 are 2 mm, and the adjacent flow paths 3 are t2 and t3.
- a sample was manufactured so that the distance E between the two was 2 mm.
- the fluid supply port (hereinafter not shown) is formed on one side surface, and the discharge port is formed on the other side surface facing the supply port with an aluminum material. The produced one was brazed.
- the lid member 1a is made of ceramics, and a flow path member 12 is manufactured in which the side wall 1c and the bottom plate 1b are made of metal.
- Each dimension is sample No. 1 and 24, and the ceramic of the lid 1a is also the sample No. Identical to 1 and 24.
- the metal of the side wall portion 1c and the bottom plate portion 1b aluminum having a purity of 99.7% is used, and a sample having no gap 4 is designated as Sample No. 101, with a gap of 4 102.
- Sample No. As a method of manufacturing each t2 through-hole constituting each of the flow path members 12 of 1 and 24, a ceramic green sheet is formed using the mold 21 shown in FIG. A rectangular chamfer was formed on the end surface of the ceramic green sheet so that the gap 4 shown in the figure was formed, and three ceramic green sheets that would have the outer dimensions of the flow path member 12 described above were manufactured.
- the adhesion liquid when laminating and pressing and bonding the produced ceramic green sheets uses the same binder as when producing the ceramic green sheets (hereinafter, not shown).
- a 400 mesh, 0.02 mm thick stainless steel screen was used and applied to the entire surface of each ceramic green sheet laminated with a rubber squeegee.
- a prescale (Fuji Film Co., Ltd., model name: LLLW for ultra-low pressure 0.2 to 0.6 MPa) was sandwiched (hereinafter not shown) and laminated. It was confirmed that the entire surface of the ceramic green sheet was evenly pressurized. At this time, if a uniform pressure is applied to the entire surface of the ceramic green sheet, the portion other than the flow path pattern is colored in red. Alternatively, it was excluded from the sample at this point.
- the channel member 12 which is a molded product of this product shape, was fired at a maximum temperature of 1600 ° C. in a pusher-type tunnel kiln. A channel member having a triangular gap 4 between 1 and 24 was obtained. In addition, some of the products of the flow path member 12 were partially stored as unfired samples as samples for confirming the state of the joint.
- the lid portion 1a is the sample No.
- a lid body 1a fired in advance was prepared.
- the flow path member 12 was manufactured by joining the obtained lid part 1a and the side wall part 1c by brazing.
- the brazing was performed by applying a brazing material made of Al—Si by a screen printing method and performing heat treatment at a temperature of about 590 ° C. under a pressure of about 0.15 MPa.
- the fluid supply port and the discharge port are sample Nos. It produced similarly to 1 and 24.
- the sample No. of the flow path member 12 obtained in this way. 1 and 24 were subjected to ultrasonic testing.
- the purpose of the ultrasonic flaw detection test is to check whether there is any delamination that can be regarded as a bonding failure in the bonding portion 1d between the lid portion 1a and the side wall portion 1c that forms the flow channel 3 in the flow channel member 12 after firing. It is for confirmation.
- the ultrasonic flaw detection test uses model name: mi-scopehyper manufactured by Hitachi Construction Machinery Finetech Co., Ltd., and the thickness t of the laminate of the lid 1a and the side wall 1c of the flow path member 1 is 4.5 mm.
- Use an ultrasonic probe (model name: 50P6F15) with a frequency of 50 MHz from the top and bottom to the first and second layers, and a 25 MHz ultrasonic probe (model name: PT-3-25-17) for the third layer, which is the middle of the stack.
- the ultrasonic flaw detection test was conducted on the entire surface of the flow path member.
- the ultrasonic probe to be used is selectively used depending on the thickness t of the laminated ceramic sheets. Further, when the thickness t is increased, a probe having a lower frequency may be used.
- the ultrasonic flaw detection test is evaluated by comparing the depth 4a of the gap 4 of each sample with the depth 4a of the gap by the ultrasonic flaw detection test, and the image gap 4 by the ultrasonic flaw detection test. If the maximum value of the difference from the depth 4a is within the range of ⁇ 10%, it was judged as non-defective, and if it exceeded + 10%, it was judged as defective. In addition, when the depth 4a is 0.005 mm or less, the gap 4 is not substantially present.
- the evaluation is good if the defect rate of the flow channel member 1 of 50 samples is 0%, the evaluation is good if the defect rate is 2% or less, and the evaluation is good if the defect rate exceeds 2%. No.
- the unfired flow path member 12 same as that of each sample, the bonding portion 1d of 50 samples, and the bonding failure using a magnifying glass (10 times) while peeling by hand Observation was made to see if there was a cause for this.
- the presence of the gap 4 connected to the flow path 3 at the joint 1d between the lid 1a and the side wall 1c of the flow path member 12 affects the heat exchange efficiency on the mounting surface on which the heat exchange object is placed. The degree was also confirmed.
- thermocouple As a test method, a heater and a thermocouple were attached to the outer surface of the lid 1a of each sample. And it heated so that the temperature of the location which attached the thermocouple might be set to 50 degreeC.
- water having a water temperature of 18 ° C. was used as the fluid and supplied to the flow path member 12 at about 0.3 MPa.
- the surface temperature of the outer surface of the lid portion 1a was measured after 30 minutes, and the average temperature change amount was confirmed in each sample.
- the depth 4a of the gap 4 is 0.08 mm and the maximum height 4b is 0.06 mm, so even if a burr 1f occurs on the end face 1g, the joint between the lid 1a and the side wall 1c. It is conceivable that the occurrence of poor bonding could be prevented without entering 1d. By the way, although the joint part of the unfired sample was confirmed, no burrs on the end face on the flow path side of the ceramic green sheet were caught in the joint part of the ceramic green sheet and no joint was found.
- Samples 101 and 102 in which the lid portion 1a is integrally formed of alumina ceramics and the side wall portion 1c and the bottom plate portion 1b are integrally formed by brazing, are bonded to a sample 1d of the lid portion 1a and the side wall portion 1c. Regardless of the presence or absence of the gap 4 connected to the flow path 3, no bonding failure occurred.
- This is the sample No. 1 and 24 are both soft green molded bodies that are laminated, pressed and fired to join, and in the vicinity of the flow path 3, the propagation of the applied pressure to the intermediate layer serving as the side wall 1 c is the presence or absence of burrs. Greatly depends on the sample number.
- the sintered body since the sintered body is joined, if there is a burr on the end face or the like, it can be removed by polishing or the like, and the burr including the flatness can be absorbed by the thickness of the brazing material. Furthermore, since a hard object is joined, there is little influence on the propagation of the applied pressure to the vicinity of the flow path.
- sample No. 1 in which the lid portion 1a is ceramic and the side wall portion 1c and the bottom plate portion 1b are metal.
- Sample No. 101 with a gap of 4 for a temperature change of 101 ° C. 102 is 28 ° C. It can be seen that the heat exchange efficiency is improved by the presence of the gap 4.
- the contact portion 1d between the lid portion 1a and the side wall portion 1c of the flow path member 12 has a gap 4 connected to the flow path 3, so that the heat contact area between the flow path 3 and the fluid is increased. It can be seen that the heat exchange efficiency with the outer surface of the lid 1a can be improved by the increase.
- the gap 4 connected to the flow path 3 at the joint 1d between the lid portion 1a and the side wall 1c is connected to the flow path 3 of the ceramic green sheet. It can be seen that the occurrence of defective bonding can be suppressed because the burrs generated when the through-holes to be formed are absorbed in the gap 4 and are not sandwiched between the joint portions 1d.
- the material of the flow path member may be either ceramics or metal.
- the flow path is winding, it is difficult to perform extrusion molding, injection molding, or integral molding with a mold or a press. Specifically, a plurality of sheets each having a complicated through hole serving as a flow path are laminated and manufactured. And in the case of a heat exchanger that repeats heating and cooling, if the lid part, the side wall part, and the bottom plate part are made of the same material, there is little risk of peeling of the joint part due to the difference in thermal expansion.
- a ceramic flow path member obtained by laminating and firing ceramic green sheets.
- the sample is prepared using the same alumina ceramic used in Example 1, and the evaluation method for bonding failure is also the same.
- Sample No. 1 and 14 are the same as in Example 1, except that sample no. Nos. 2 to 8 have a gap 4 shape or a rectangular shape. In Nos. 11 to 17, the gap 4 has a trapezoidal shape. In 21 to 27, the gap 4 has a triangular shape. Moreover, the metal mold
- sample No. in the example. Nos. 6, 15 and 25 have an occurrence rate of the above-mentioned joint failure of 2%. Evaluation was good as in 2, but no burrs were found to cause bonding failure. After laminating the ceramic green sheets, the prescale sandwiched in order to see the pressure propagation state when pressurized was confirmed. The depth 4a of the gap 4 was about 0.09 mm when converted to the dimensional value after firing. Since the density of the red color development is thin, it is considered that the insufficient pressure propagation of the pressurization is the cause of the bonding failure.
- Sample No. 7, 8, 16, 17, 26 and 27 have the same length 4a and the maximum height 4b of the gap 4, but the incidence of joint failure is 2% and the evaluation is good. It was. The cause of the bonding failure is that part of the burr has entered the bonding portion because the depth 4a is equal to the maximum height 4b.
- Specimen No. 4 in which the depth 4a of the gap 4 is 0.03, 0.04, 0.08 mm and is longer than the maximum height 4b.
- the occurrence rate of bonding failure was 0%, and the evaluation was excellent.
- the junction part of the unbaked sample was confirmed, the thing which caused the burr
- the shape of the gap 4 may be any of a rectangular shape, a trapezoidal shape, or a triangular shape opened to the flow path 3 side.
- the gap 4 has a rectangular shape or a trapezoidal shape, it is when the burr generated on the end face of the through-hole serving as the flow path 3 in the ceramic green sheet is allowed in the gap 4 in the manufacturing process.
- the shape is selected when it is desired to reduce the size of the burr, and the processing method may be selected as appropriate.
- the joining is performed by sandwiching the ceramic green sheets and pressing them into the joining portion when pressed. It is possible to further suppress the occurrence of bonding failure due to the failure and insufficient propagation of the applied pressure.
- the 50 flow path members 12 for each sample were manufactured by the same method as in Example 1, and the bonding failure was also confirmed by the ultrasonic flaw detection test, and the evaluation method was similarly performed.
- the outer dimension of the flow path member 12 is a structure having a length L of 200 mm, a width D of 12 mm, and a height H of 4.5 mm, but the content of aluminum oxide is 94.0 to 97.0% by mass and the balance is the remainder.
- the respective joint portions 1d between the lid portion 1a and the side wall portion 1c inside the flow path member 12 can be joined without any problem. Therefore, it can be said that the occurrence of sinterability problems was also suppressed. Since it contains an appropriate sintering aid, the sinterability is enhanced and there is no need to increase the firing temperature, and the firing cost can be reduced.
- the flow path member 12 of the present example is less likely to cause poor bonding of the side wall portion, and suppresses the occurrence of delamination even when the fluid is flowed at a high pressure and used for cooling or heating. it can. Furthermore, a relatively low-cost channel member can be provided.
- Channel member 1a Lid 1b: Bottom plate 1c: Side wall 1d: Joint 1e: Chamfer 1f: Burr 1g: End surface 3: Channel 4: Clearance 4a: Depth of gap 4b: Maximum height of gap 5: Metal plate 6: Electronic component 7, 8: Processed ceramic green sheet 7b ', 8b': End face 7c ', 8c': Chamfer 20: Heat exchanger 30: Electronic component apparatus
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Abstract
Description
流路3となる貫通孔を形成するときに発生するバリを隙間4中で吸収し接合部1dに挟み込むことがないから接合不良の発生を抑制できることが分かる。
1a:蓋体部
1b:底板部
1c:側壁部
1d:接合部
1e:面取り
1f:バリ
1g:端面
3:流路
4:隙間
4a:隙間の奥行き
4b:隙間の最大高さ
5:金属板
6:電子部品
7,8:加工したセラミックグリーンシート
7b’,8b’:端面
7c’,8c’:面取り
20:熱交換器
30:電子部品装置
Claims (8)
- 蓋体部と側壁部と底板部とで構成され、内部に流体が流れる流路を有するとともに、前記蓋体部と前記側壁部との間に前記流路につながる隙間を有することを特徴とする流路部材。
- 前記側壁部は、前記流路を形成するための孔を有する板状体を複数備えてなる積層体であって、該積層体を構成する板状体の間に前記流路につながる隙間があることを特徴とする請求項1に記載の流路部材。
- 前記流体が流れる方向に対して直交するように断面視したとき、前記隙間が矩形状または台形状であることを特徴とする請求項1または請求項2に記載の流路部材。
- 前記流体が流れる方向に対して直交するように断面視したとき、前記隙間は、前記側壁部側に延びる方向に向かって、上下に開口する方向の高さが低くなることを特徴とする請求項1または請求項2に記載の流路部材。
- 前記流体が流れる方向に対して直交するように断面視したとき、前記隙間は、前記側壁部側に延びる方向の奥行きをaとし、上下に開口する方向の最大高さをbとしたとき、a>bの関係であることを特徴とする請求項1乃至請求項4のいずれかに記載の流路部材。
- 前記奥行きが0.03mm以上0.08mm以下であることを特徴とする請求項5に記載の流路部材。
- 請求項1乃至6のいずれかに記載の流路部材の前記蓋体部の外面に、金属板を設けてなることを特徴とする熱交換器。
- 請求項7に記載の熱交換器の前記金属板上に電子部品を搭載してなることを特徴とする電子部品装置。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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KR1020127032111A KR101503824B1 (ko) | 2010-06-09 | 2011-06-09 | 유로 부재, 이것을 사용한 열교환기, 및 전자 부품 장치 |
EP11792519.8A EP2582213B1 (en) | 2010-06-09 | 2011-06-09 | Flow channel member, heat exchanger using same, and electronic component device |
US13/702,948 US20130088837A1 (en) | 2010-06-09 | 2011-06-09 | Flow channel member, and heat exchanger using the same, and electronic component device |
JP2011543023A JP5073104B2 (ja) | 2010-06-09 | 2011-06-09 | 流路部材およびこれを用いた熱交換器ならびに電子部品装置 |
CN201180028161.6A CN102934528B (zh) | 2010-06-09 | 2011-06-09 | 流路构件、使用该流路构件的热交换器、以及电子部件装置 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2010132103 | 2010-06-09 | ||
JP2010-132103 | 2010-06-09 |
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WO2011155562A1 true WO2011155562A1 (ja) | 2011-12-15 |
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ID=45098166
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2011/063250 WO2011155562A1 (ja) | 2010-06-09 | 2011-06-09 | 流路部材およびこれを用いた熱交換器ならびに電子部品装置 |
Country Status (6)
Country | Link |
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US (1) | US20130088837A1 (ja) |
EP (1) | EP2582213B1 (ja) |
JP (2) | JP5073104B2 (ja) |
KR (1) | KR101503824B1 (ja) |
CN (1) | CN102934528B (ja) |
WO (1) | WO2011155562A1 (ja) |
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JP2013048204A (ja) * | 2011-07-28 | 2013-03-07 | Kyocera Corp | 流路部材、これを用いた熱交換器および電子部品装置ならびに半導体製造装置 |
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2011
- 2011-06-09 CN CN201180028161.6A patent/CN102934528B/zh active Active
- 2011-06-09 EP EP11792519.8A patent/EP2582213B1/en active Active
- 2011-06-09 JP JP2011543023A patent/JP5073104B2/ja active Active
- 2011-06-09 US US13/702,948 patent/US20130088837A1/en not_active Abandoned
- 2011-06-09 WO PCT/JP2011/063250 patent/WO2011155562A1/ja active Application Filing
- 2011-06-09 KR KR1020127032111A patent/KR101503824B1/ko active IP Right Grant
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2012
- 2012-04-23 JP JP2012097816A patent/JP5502133B2/ja active Active
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Cited By (6)
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JP2013048204A (ja) * | 2011-07-28 | 2013-03-07 | Kyocera Corp | 流路部材、これを用いた熱交換器および電子部品装置ならびに半導体製造装置 |
JP2014060393A (ja) * | 2012-08-24 | 2014-04-03 | Kyocera Corp | 流路部材およびこれを用いた熱交換器ならびに半導体製造装置 |
JP2015138910A (ja) * | 2014-01-23 | 2015-07-30 | 京セラ株式会社 | 流路部材およびこれを用いた熱交換器ならびに半導体製造装置 |
JP2017044363A (ja) * | 2015-08-24 | 2017-03-02 | 京セラ株式会社 | 流路部材 |
JP2019220611A (ja) * | 2018-06-21 | 2019-12-26 | 株式会社デンソー | 電力変換装置及び冷却システム |
JP7087715B2 (ja) | 2018-06-21 | 2022-06-21 | 株式会社デンソー | 電力変換装置及び冷却システム |
Also Published As
Publication number | Publication date |
---|---|
JP5073104B2 (ja) | 2012-11-14 |
EP2582213A1 (en) | 2013-04-17 |
CN102934528B (zh) | 2015-07-01 |
KR101503824B1 (ko) | 2015-03-18 |
EP2582213A4 (en) | 2014-01-15 |
JP5502133B2 (ja) | 2014-05-28 |
CN102934528A (zh) | 2013-02-13 |
KR20130036244A (ko) | 2013-04-11 |
US20130088837A1 (en) | 2013-04-11 |
EP2582213B1 (en) | 2021-01-20 |
JPWO2011155562A1 (ja) | 2013-08-01 |
JP2012165006A (ja) | 2012-08-30 |
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