JP2010027998A - Heat transmission surface structure having flat coil-like fin member and manufacturing method of the structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To stably fix a fin member on a substrate by a simple method, to easily position the fin member on the substrate and to easily manufacture a heat sink having a wide surface area in which many long edges are formed and having a high heat radiation property. <P>SOLUTION: A flat coil member 1 having a flat winding shape is formed by a wire material 2. An engagement groove 5 capable of engaging one side of the flat coil member 1 in a longitudinal axis direction is formed on a heat transmission surface 7 of a heat transmission substrate 6. By inserting and engaging the one side of the flat coil member 1 in the longitudinal axis direction into/with the engaging groove 5, the flat coil member 1 is fixed on the heat transmission surface 7 of the heat transmission substrate 6 to obtain a flat coil-like fin member 12. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention is arranged in contact with a heating element such as an electronic element, and the heat of the heating element is released by a radiation fin to cool it, or connected to a condensing part of a heat pipe, and the heat transferred by the heat pipe is externally provided. The present invention relates to a structure such as a heat transfer surface to be discharged and a manufacturing method thereof.

  In an electronic device such as a computer, the amount of heat generated by an electronic element such as a semiconductor is enormous. Therefore, in order to effectively cool this heat, as shown in Patent Documents 1 and 2 below, Exchangers are widely used. This heat sink is used by, for example, arranging a substrate as a heat receiving portion directly on the surface of a heating element such as an electronic element and fixing it to the heating element with fixing means such as screws. In addition, a plurality of plate members protrude from the surface of the heat receiving portion to increase the heat radiation area.

  Among such conventional heat sinks, as shown in Patent Document 3, a metal wire is continuously formed in a rectangular uneven shape for the purpose of expanding the surface area and improving heat dissipation than those shown in Patent Documents 1 and 2. A fin member is formed by bending and a plurality of fin members are disposed on the surface of the substrate.

  However, the fin member as shown in Patent Document 3 is a planar member in which rectangular irregularities are formed on the same plane with a wire rod. Therefore, it is easy to fall down, and it is difficult to stably arrange on the surface of the substrate, and it takes time to arrange such fin members densely or in a large amount on the substrate. It has been difficult to arrange and widen the surface area and to form many long edges.

Therefore, as shown in Patent Document 4, a heat sink in which a coiled fin member is arranged on the surface of a substrate has been developed. Since the fin member disposed on the heat sink has a three-dimensional shape obtained by winding a wire in a coil shape, the fin member can be stably disposed on the surface of the substrate. Further, by arranging such fin members densely on the surface, it is possible to form a large number of long edges by expanding the contact area to the substrate with a guide member or the like.
JP 2002-1511 A JP 2002-190558 A JP 2002-190557 A JP 2007-165846 A

  However, the heat sink as shown in Patent Document 4 requires a guide member to be arranged on the substrate in advance in order to facilitate the positioning of the fin member when the fin member is arranged on the flat substrate. The work was time-consuming. In addition, in order to fix the fin member to the surface of the substrate, the contact portion between the surface of the substrate and the fin member is fixed by brazing, bonding, welding, or the like, or previously formed on the surface of the substrate with a wire or a strip. It has been an essential condition that the guide member is fixedly disposed and the fin member is disposed in contact with the guide member, or the fin member is embedded in the substrate. Therefore, the manufacturing process for fixing and arranging the fin member on the surface of the substrate is complicated.

  In view of the above, the present invention is intended to solve the above-described problems, and enables a fin member to be stably erected and arranged on a substrate by a simple method, and positioning on the substrate is easy. In addition, an object of the present invention is to make it possible to easily manufacture a heat transfer surface structure having a large surface area and a large number of long edges and having a high heat dissipation property.

  In order to solve the above-described problems, the first invention enables a flat coil member having a flat winding shape formed of one wire to be fitted to one side in the long axis direction of the flat coil member. A heat transfer board formed with a fitting groove on the heat transfer surface, and by fitting and inserting one side of the flat coil member in the long axis direction into the fitting groove, on the heat transfer surface of the heat transfer board A flat coil member is fixedly arranged to form a flat coil fin member.

  Moreover, 2nd invention is a manufacturing method of the heat-transfer surface provided with the flat coil-shaped fin member of the said 1st invention, Comprising: The process of forming the flat coil member whose winding shape is flat shape with one wire rod A step of forming a fitting groove on the heat transfer surface of the heat transfer board that allows one side of the flat coil member to be fitted in the long axis direction; and a long axis direction of the flat coil member in the fitting groove A flat coiled fin member characterized in that the flat coiled fin member comprises a step of fitting a flat coil member on the heat transfer surface of the heat transfer board and fixing the flat coil member to a flat coiled fin member.

  Further, the heat transfer board may be an arc-shaped curved surface with a central portion on the heat transfer surface side projecting outward, and a fitting groove may be provided in the arc-shaped curved surface at the same center of curvature as the arc-shaped curved surface. Thereby, when the flat coil member is fixedly arranged on the heat transfer surface of the heat transfer substrate, the flat coil member is arranged radially, compared to the case where the flat coil member is arranged on the flat heat transfer surface, Even if the wire is in close contact within the fitting groove, the substrate contact area can be increased, and a fluid flow interval can be widened on the distal end side of the flat coil member. For this reason, the air permeability at the tip of the fin member can be made good, so that the effect of absorbing and releasing heat from the flat coil member is made good, and the heat exchange performance can be further enhanced.

  Further, the flat coil member may be fixedly disposed in the fitting groove by press-fitting one side in the long axis direction. Thereby, it becomes possible to fix and arrange the flat coil member in the fitting groove by a simple method without using fixing means such as adhesion, and it becomes possible to improve the workability of the manufacturing work of the heat transfer surface.

  In addition, after inserting the flat coil member, the fitting groove is formed by pressing the surface of the dividing wall formed between the fitting grooves with a caulking jig on one side of the flat coil member. It may be one that is pressed and held. In this manner, the flat coil member can be easily caulked and fixed in the fitting groove by forming the caulking deformation portion and pressing and holding the flat coil member, and the flat coil member can be firmly fixed in the fitting groove. It can be fixed.

  Further, the flat coil member may be fixed to the fitting groove by any one or a combination of adhesion, caulking, brazing, and welding. As a result, the contact area between the flat coil member and the fitting groove is increased by an adhesive, brazing material, filler metal, etc., so that heat transfer between the flat coil-shaped fin member and the heat transfer substrate is improved, thereby absorbing and releasing heat. In addition to being excellent, it is possible to obtain a heat transfer surface that is improved in strength of the fixing portion and excellent in durability against vibration and thermal stress.

  The flat coil member is fixed to the fitting groove by injecting an adhesive into the fitting groove and embedding one side of the flat coil member in the adhesive to solidify the adhesive. May be. As a result, the flat coil member can be firmly fixed in the fitting groove, and the strength of the fixing portion can be improved to obtain a heat transfer surface excellent in durability against vibration, thermal stress and the like. Further, when a heat conductive adhesive is used, heat transfer between the flat coiled fin member and the heat transfer substrate becomes good, so that heat absorption and heat dissipation can be improved.

  1st and 2nd invention of this application is comprised as mentioned above, Comprising: A flat coil is formed in the heat-transfer surface of a heat-transfer board | substrate by carrying out fitting insertion of the one side of the long axis direction of a flat coil member in a fitting groove. Since the members are fixedly arranged, the flat coil member can be fixedly arranged on the heat transfer board by a simple method, and the workability of fixing the flat coil member to the heat transfer surface can be improved. Become. In addition, since the lower end of the flat coil member is inserted and fitted into a fitting groove formed in advance on the heat transfer surface of the heat transfer substrate, it is possible to easily position the flat coil member on the heat transfer surface, It becomes possible to improve the workability of the manufacturing work of the heat transfer surface.

  Further, since the flat coil member is fitted and inserted into the fitting groove, it is possible to suppress the expansion and contraction in the length direction of the flat coil member, in particular, the extension, and therefore the flat coil member is disposed on the heat transfer surface of the heat transfer board. Variations in the pitch interval of the flat coil member thus made are less likely to occur. In addition, since the flat coil member can be stably erected and arranged at a fixed angle on the heat transfer surface by the fitting and insertion, the inclination angle of each turn of the flat coil member does not easily vary. It will be a thing. Thus, since it is possible to suppress variations in the pitch interval of the flat coil member and the inclination angle for each winding, it becomes possible to efficiently arrange the fin members densely on the heat transfer surface of the heat transfer substrate, It becomes possible to improve the heat exchange performance of the heat transfer substrate. Further, since the lower end of the flat coil member is inserted and fitted into the fitting groove, the contact area between the flat coil member and the heat transfer substrate can be increased, and the heat conduction efficiency can be improved.

  Further, when the heat transfer board is an arc-shaped curved surface with the central portion on the heat transfer surface protruding outward, and the fitting groove is recessed in the arc-shaped curved surface at the same center of curvature as the arc-shaped curved surface, a flat coil member Is fixed on the heat transfer surface of the heat transfer board, the flat coil member is arranged radially, and even if the flat coil member is arranged on the flat heat transfer surface, even in the fitting groove Even if the wire is in close contact, the substrate contact area can be increased, and a fluid flow interval can be widened on the distal end side of the flat coil member. For this reason, the air permeability at the tip end side of the fin member can be made good, so that the effect of absorbing and releasing heat from the flat coil member is made good, and the heat exchange performance can be further enhanced.

  Embodiment 1 of the first invention and the second invention of the present application will be described with reference to FIGS. 1 to 5. As shown in FIG. 1, (1) is a flat coil member, which is made of one stainless steel, aluminum, copper. A wire rod (2) made of nickel, iron, or a base alloy thereof is formed by being spirally wound so as to be flat as shown in FIG. Thus, by making the winding shape of the flat coil member (1) flat, a flat annular piece (3) is formed for each winding of the flat coil member (1), and this annular piece (3) Are formed so as to be dense and continuous in the axial direction of the flat coil member (1). This flat annular piece (3) may be formed in an oval shape, or may be formed by arcing both ends of a rectangle.

  Further, the fitting groove (5) capable of fitting one side (4) in the long axis direction of the flat coil member (1) is made of aluminum, copper, aluminum alloy, copper alloy, and casting or rolling of these metals. On the heat transfer surface (7) of the plate-shaped heat transfer substrate (6) formed of a material or the like, a plurality of rows are formed at equal intervals as shown in FIG. 1 by cutting, pressing, forging or the like. In the present embodiment, the fitting groove (5) is formed in the heat transfer surface (7) of the heat transfer substrate (6) by cutting, pressing, forging, etc., as described above. In the embodiment, the heat transfer substrate (6) having the fitting groove (5) may be formed by extrusion molding or the like. Further, as shown in FIG. 4, the fitting groove (5) is formed in a substantially rectangular cross section with the bottom surface (8) as a flat surface, and the formation width (10) is formed in the flat coil member (1). It is almost the same as the width (11).

  Then, as shown in FIG. 2, the length of the flat coil member (1) is formed in each of the fitting grooves (5) formed in plural at equal intervals on the heat transfer surface (7) of the heat transfer substrate (6) as described above. One side (4) in the axial direction is fitted and inserted. And by this fitting insertion, the flat coil member (1) is fixedly disposed on the heat transfer surface (7) of the heat transfer substrate (6) as shown in FIGS. 2 and 3, and the flat coil-shaped fin member (12) is It is formed. At that time, in this embodiment, the formation width (10) of the fitting groove (5) is substantially the same as the formation width (11) of the winding shape of the flat coil member (1) as described above. The flat coil member (1) is pressed with a constant pressing force toward the bottom surface (8) of the fitting groove (5), and the flat coil member (1) is fitted and inserted into the fitting groove (5) by press-fitting. Thus, the flat coil member (1) is fitted and inserted into the fitting groove (5) by press-fitting, so that the flat coil member (1) in the long axis direction can be obtained in a simple manner without using fixing means such as adhesion. One side (4) can be fixedly arranged in the fitting groove (5), and the workability of the manufacturing work of the heat transfer surface (7) can be improved.

  Further, as described above, the flat coil member (1) is fitted and inserted into the fitting groove (5), and the flat coil member (1) is fixedly disposed on the heat transfer surface (7) of the heat transfer substrate (6). Since the flat coil member (1) can be fixed and arranged on the heat transfer substrate (6) by a simple method, the workability of fixing the flat coil member (1) to the heat transfer surface (7) is improved. It becomes possible. Moreover, since the lower end of the flat coil member (1) is inserted and fitted into the fitting groove (5) formed in advance on the heat transfer surface (7) of the heat transfer substrate (6), the heat transfer of the flat coil member (1). Positioning on the surface (7) can be facilitated.

  Further, by fitting and inserting the flat coil member (1) into the fitting groove (5) as described above, it is possible to suppress expansion and contraction in the length direction of the flat coil member (1), particularly elongation. It becomes difficult for the pitch interval of the flat coil member (1) disposed on the heat transfer surface (7) of the heat transfer substrate (6) to vary. Moreover, since the flat coil member (1) can be stably erected and arranged at a fixed angle on the heat transfer surface (7) by the fitting insertion, each winding of the flat coil member (1) can be performed. Each inclination angle is corrected, and variations are less likely to occur. Thus, since the variation in the pitch interval of the flat coil member (1) and the inclination angle for each winding can be suppressed, the fin members are efficiently concentrated on the heat transfer surface (7) of the heat transfer substrate (6). Therefore, it becomes possible to arrange accurately, and it becomes possible to improve the heat exchange performance of the heat transfer substrate (6). Further, since the lower end of the flat coil member (1) is inserted and fitted into the fitting groove (5), the contact area between the flat coil member (1) and the heat transfer substrate (6) is increased, and heat conduction is performed. The efficiency can be improved.

  In addition, as described above, the flat shape of the flat coil member (1) is made flat so that the flat annular piece (3) is formed densely and continuously in the axial direction of the flat coil member (1). Yes. Therefore, when the flat coil member (1) is fixed to the heat transfer surface (7) of the heat transfer substrate (6) as described above, a large number of the annular pieces (3) are densely arranged on the upper surface of the heat transfer surface (7). Therefore, the heat absorbing / dissipating surface area of the heat transfer surface (7) can be easily increased. Further, since the annular piece (3) can easily form a long and enormous number of edges, the boundary layer can be peeled off by generating a large turbulence or vortex in the fluid flow. Therefore, the heat exchange performance of the heat transfer surface (7) can be remarkably improved by the large surface area and the edge effect by a large number of continuous edges.

  In this example, in Example 1 and Examples 2 to 8 below, the cross-sectional shape of the wire (2) is circular as shown in FIG. 5 (a), but other different examples are used. 5, (b) an ellipse, (c) a square, (d) a triangle, (e) a diamond, (f) a star, (g) a trapezoid, (h) an oval, (i) It may have an arbitrary shape such as a rectangle or (j) pentagon. Moreover, you may use combining a thing from which a magnitude | size, a material, or a cross-sectional shape differs for a wire (2). Further, in this embodiment and Examples 2 to 8 to be described later, one flat coil member (1) is arranged in each of the fitting grooves (5), but in other different embodiments. In this case, it is also possible to arrange a plurality of flat coil members (1) in one fitting groove (5).

  In the first embodiment, as described above, one side (4) in the long axis direction of the flat coil member (1) is fixed to the fitting groove (5) by press fitting. In the second embodiment, FIG. As shown in FIG. 7, it is also possible to fix one side (4) of the flat coil member (1) in the long axis direction in the fitting groove (5) by bonding, brazing, or welding. In this case, the contact area between the flat coil member (1) and the fitting groove (5) becomes larger than that in the case of press-fitting with an adhesive, a brazing material, a filler material, etc. Heat transfer surface (7) with excellent heat transfer between the member (12) and the heat transfer substrate (6) and excellent heat absorption and radiation, and improved durability against vibrations and thermal stress by improving the strength of the fixed part. Can be obtained.

  In addition, it is of course possible to fix the press-fitted one by bonding, brazing, or welding. In this case, the flat coil member (1) and the fitting groove (5) can be more firmly fixed. It becomes possible. In the second embodiment, as described above, one side (4) in the long axis direction of the flat coil member (1) is fixed in the fitting groove (5) by any one of adhesion, brazing, and welding. However, in other different embodiments, the flat coil member (1) can be fixed to the fitting groove (5) by any combination of bonding, caulking, brazing, or welding.

  In Example 2, the long axis of the flat coil member (1) is bonded, brazed, or welded only at the contact portion between the flat coil member (1) and the heat transfer surface (7) of the heat transfer substrate (6). One side (4) of the direction is fixed in the fitting groove (5). In Example 3, an adhesive is injected into the fitting groove (5), and a flat coil member is injected into the adhesive. By embedding one end of (1) and solidifying the adhesive, the flat coil member (1) is fixed to the fitting groove (5) as shown in FIG. Thus, by embedding one end of the flat coil member (1) in the adhesive and fixing the flat coil member (1) to the fitting groove (5), the flat coil member (1) is fitted into the fitting groove ( 5) It becomes possible to fix firmly in the inside, and the strength of the fixing part is improved, so that a heat transfer surface (7) excellent in durability against vibration, thermal stress and the like can be obtained. Further, when a heat conductive adhesive is used, heat transfer between the flat coiled fin member (12) and the heat transfer substrate (6) is further improved, and the heat absorption / dissipation can be improved.

  In Examples 1 to 3, the fitting groove (5) is formed in a cross-sectional shape and the bottom surface (8) is a flat surface as shown in FIGS. In Example 4, as shown in FIG. 9, the bottom surface (8) of the fitting groove (5) is curved in an arc shape in accordance with the outer peripheral shape of one side (4) of the flat coil member (1). Thus, when the flat coil member (1) is fitted and inserted into the fitting groove (5) by curving the bottom surface (8) of the fitting groove (5) in an arc shape, the flat coil member (1) The outer periphery of one side (4) is in surface contact with the fitting groove (5), and the contact area between the flat coiled fin member (12) and the fitting groove (5) is further increased to improve heat exchange performance. It becomes possible to raise more.

Moreover, in the said Examples 1-4, although one side (4) of the flat coil member (1) is fixed in the said fitting groove (5) by press-fit, adhesion | attachment, brazing, or welding, this implementation In Example 5, one side (4) of the flat coil member (1) is fixed to the fitting groove (5) by caulking. The fifth embodiment will be described. First, one side (4) of the flat coil member (1) is inserted and disposed in the fitting groove (5). The flat coil member (1) may be inserted and arranged in the fitting groove (5) by press fitting.

  Thus, the width direction of the surface of the dividing wall (13) formed between the fitting grooves (5) in a state where one side (4) of the flat coil member (1) is inserted and arranged in the fitting groove (5). The central portion is continuously pressed from one end to the other end of the dividing wall (13) with a crimping jig (not shown) having a wedge-shaped tip. As a result, as shown in FIGS. 10 and 11, the upper part of the dividing wall (13) is divided into two in a wedge shape by a caulking jig (not shown), and each of them is inclined toward the flat coil member (1) which is the separating direction. As a result, caulking deformation occurs. Then, the flat coil member (1) is pressed inward from both sides by the crimping deformation portion (14), and is pressed and held in the fitting groove (5). Thereby, the flat coil member (1) can be caulked and fixed in the fitting groove (5). Thus, the flat coil member (1) is pressed by pressing the dividing wall (13) with a caulking jig (not shown) in a state where the flat coil member (1) is inserted and arranged in the fitting groove (5). Can be easily and firmly fixed to the fitting groove (5).

  Further, in the fifth embodiment, as shown in FIGS. 10 and 11, the crimping deformation portion (14) is continuously provided on each dividing wall (13), but in the sixth embodiment, As shown in FIG. 12, the crimping deformation part (14) is formed in each dividing wall (13) via a fixed formation interval (18). By forming in this way, the amount of caulking deformation can be reduced and the amount of caulking deformation can be reduced compared with the case where the caulking deformation portion (14) is formed continuously on each dividing wall (13). At the same time, the workability of the caulking process can be improved, so that the caulking deformation part (14) can be easily formed. Moreover, compared with the case where the crimp deformation | transformation part (14) is continuously provided in each division wall (13), it becomes possible to maintain the intensity | strength of a division wall (13) favorable.

  Moreover, in the said Example 5, 6, as shown in FIGS. 10-12, a flat coil member (1 is produced by producing caulking deformation | transformation on the surface of all the division walls (13) formed between the fitting grooves (5). In this embodiment, as shown in FIGS. 13 and 14, every other dividing wall (13) is deformed by caulking, and the flat coil member (1) is fitted into the fitting groove ( It is fixed by caulking to 5). Thus, even when the dividing wall (13) is caulked and deformed every other, the flat coil member (1) in the fitting groove (5) is one of the dividing walls (13) adjacent to both sides. One side (4) is pressed inward by the caulking deformation part (14) generated in the dividing wall (13). Therefore, the flat coil member (1) can be pressed and held in the fitting groove (5) as in the fifth and sixth embodiments.

  Accordingly, the flat coil member (1) can be caulked and fixed in the fitting groove (5), and the flat coil member (1) can be easily and firmly fixed to the fitting groove (5). In addition, since every other dividing wall (13) is deformed by caulking, it is possible to reduce the trouble of caulking deformation as compared with the case where all the dividing walls (13) are caulked and deformed as in the fifth embodiment. Can be manufactured easily.

  Moreover, in the said Examples 1-7, although the heat-transfer surface (7) uses the flat heat-transfer board | substrate (6), in this Example 7, as shown to FIG. 15, FIG. 7) A kamaboko-shaped heat transfer substrate (6) having an arcuate curved surface (20) projecting outward at the center on the side is used, and the arc-shaped curved surface (20) is used on the kamaboko-shaped heat transfer substrate (6). The fitting grooves (5) are recessed at regular intervals at the same curvature center as shown in FIG. By forming in this way, when the flat coil member (1) is fixedly arranged on the heat transfer surface (7) of the heat transfer substrate (6), the flat coil member (1) is arranged radially as shown in FIG. Compared with the case where the flat coil member (1) is disposed on the flat heat transfer surface (7), the flat coil member (1) is elongated in the direction of the fitting groove (5), and The fluid flow interval (17) can be widened on the tip side of the flat coil member (1). Therefore, since air permeability can be made favorable, the effect of absorbing and releasing heat from the flat coil member (1) can be made good, and the heat exchange performance can be further enhanced.

  Moreover, when using the heat-transfer board | substrate (6) with a flat heat-transfer surface (7) like the said Examples 1-7, the base end side of each annular piece (3) of a flat coil member (1) When the two are closely attached, the tip end side of each annular piece (3) is also brought into close contact and the flow interval (17) is lost, which may reduce the heat exchange performance. However, in this embodiment, since the flat coil member (1) is radially arranged in the fitting groove (5) curved in an arc shape as described above, the flat coil member (1) is flat as shown in FIGS. Even if the proximal end side of the coil member (1) is brought into close contact, the distal end side of the flat coil member (1) is not brought into close contact, and the flow interval (17) can be reliably ensured. Therefore, even when the proximal end side of the flat coil member (1) is closely attached to increase the surface area of the heat transfer surface (7) to the maximum, the fluid flow around the flat coil fin member (12) is improved. The heat exchange performance can be further enhanced.

In the eighth embodiment, the bottom surface (16) of the heat transfer substrate (6) is flat as shown in FIG. 15, but in another different embodiment, the thickness of the bottom surface (16) is as shown in FIG. A shape corresponding to the shape of the heating element (not shown) may be formed by, for example, recessing in an inverted U-shaped cross section so that is constant. Thus, by making the shape of the bottom surface (16) side of the heat transfer substrate (6) correspond to the shape of the heat generating body (not shown), the heat generating body (not shown) is attached to the bottom surface (not shown) of the heat transfer substrate (6). 16) can be reliably brought into surface contact, and the heat transfer efficiency from the heating element (not shown) to the heat transfer substrate (6) can be improved, so that the heat dissipation can be further improved. . Further, by making the thickness of the bottom surface (16) of the heat transfer substrate (6) substantially constant as described above, heat exchange with the heating element (not shown) can be evenly distributed over the entire heat transfer substrate (6). This makes it possible to further enhance the heat exchange performance.

FIG. 3 is a perspective view illustrating a manufacturing process of a heat transfer surface in the first embodiment. The perspective view of a heat-transfer surface. FIG. 3 is a partially enlarged plan view of FIG. 2. AA line sectional view of Drawing 3. Sectional drawing of the wire of a present Example. Sectional drawing of the fitting insertion part to the fitting groove | channel of the flat coil member which shows Example 2. FIG. Sectional drawing which shows the state which brazed the flat coil member in the heat-transfer surface and the fitting groove in Example 2. FIG. Sectional drawing of the fitting insertion part to the fitting groove | channel of the flat coil member which shows Example 3. FIG. FIG. 9 is a perspective view showing a manufacturing process of a heat transfer surface in Example 4. FIG. 10 is a perspective view of a heat transfer surface showing Example 5. FIG. 11 is a partially enlarged perspective view of FIG. 10. FIG. 12 is a partially enlarged perspective view of a heat transfer surface showing Example 6. FIG. 11 is a perspective view of a heat transfer surface showing Example 7. FIG. 14 is a partially enlarged perspective view of FIG. 13. Sectional drawing of the heat-transfer surface which shows Example 8. FIG. The elements on larger scale of FIG. FIG. 9 is a plan view showing a heat transfer substrate of Example 8. In Example 8, sectional drawing which shows the state which formed the bottom face side of the heat-transfer board | substrate in the cross-sectional inverted U shape.

Explanation of symbols

1 flat coil member 2 wire rod
4 One side
5 Fitting groove
6 Heat transfer board
7 Heat transfer surface
12 flat coiled fin member 13 dividing wall 14 caulking deformation part

Claims (14)

  A flat coil member having a flat winding shape formed of a wire, and a heat transfer substrate in which a fitting groove capable of fitting one side in the long axis direction of the flat coil member is formed on a heat transfer surface. The flat coil member is fixedly arranged on the heat transfer surface of the heat transfer board by fitting and inserting one side in the long axis direction of the flat coil member into the fitting groove to form a flat coil fin member. A heat transfer surface structure comprising a flat coiled fin member characterized by   A step of forming a flat coil member having a flat winding shape with a wire, and a fitting groove capable of fitting one side in the long axis direction of the flat coil member are formed on the heat transfer surface of the heat transfer substrate. And a step of fitting one side of the flat coil member in the long axis direction into the fitting groove to fix and arrange the flat coil member on the heat transfer surface of the heat transfer board, thereby forming a flat coil-shaped fin member; The manufacturing method of the heat-transfer surface provided with the flat coil-shaped fin member characterized by comprising.   The heat transfer board has an arcuate curved surface with a central portion on the heat transfer surface side protruding outward, and a fitting groove is recessed in the arcuate curved surface at the same center of curvature as the arcuate curved surface. A heat transfer surface structure provided with a flat coil fin member.   The heat transfer board has an arcuate curved surface with a central portion on the heat transfer surface side protruding outward, and a fitting groove is provided in the arcuate curved surface at the same center of curvature as the arcuate curved surface. The manufacturing method of the heat-transfer surface provided with the flat coil-shaped fin member.   The heat transfer surface structure provided with the flat coiled fin member according to claim 1, wherein the flat coil member is fixedly disposed in the fitting groove by press-fitting one side in the long axis direction.   The method for manufacturing a heat transfer surface provided with the flat coiled fin member according to claim 2, wherein the flat coil member is fixedly arranged in the fitting groove by press-fitting one side in the long axis direction.   The flat coil member is fixed to the fitting groove by any one of adhesion, caulking, brazing, welding, or a combination thereof, and the transmission provided with the flat coil-shaped fin member according to claim 1 or 5. Hot surface structure.   The flat coil member is fixed to the fitting groove by any one of bonding, caulking, brazing, welding, or a combination thereof, and the transmission provided with the flat coiled fin member according to claim 2 or 6. Hot surface manufacturing method.   The fitting groove was pressed and held from both sides by a caulking deformation part formed by pressing the surface of the dividing wall formed between the fitting grooves with a caulking jig after inserting the flat coil member. A heat transfer surface structure comprising the flat coiled fin member according to claim 1, 3 or 5.   After the flat coil member is inserted into the fitting groove, the surface of the dividing wall formed between the fitting grooves is pressed with a caulking jig to cause caulking deformation, and the caulking deformation portion causes the flat coil member to be moved from both sides. A method for producing a heat transfer surface comprising the flat coiled fin member according to claim 2, wherein the heat transfer surface is pressed and held.   10. The heat transfer surface structure with a flat coiled fin member according to claim 9, wherein the flat coil member is fixed to the fitting groove by any one of bonding, brazing, welding, or combination.   The method of manufacturing a heat transfer surface with a flat coiled fin member according to claim 10, wherein the flat coil member is fixed to the fitting groove by any one of bonding, brazing, welding, or a combination thereof. .   The flat coil member is fixed to the fitting groove by injecting an adhesive into the fitting groove and embedding one end of the flat coil member in the adhesive to solidify the adhesive. A heat transfer surface structure comprising the flat coiled fin member according to Item 1, 5 or 7. The flat coil member is fixed to the fitting groove by injecting an adhesive into the fitting groove and embedding one end of the flat coil member in the adhesive to solidify the adhesive. Item 9. A method for manufacturing a heat transfer surface comprising the flat coiled fin member according to Item 2, 6, or 8.

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