KR20120088876A - Corrugated fin and heat exchanger with same - Google Patents

Abstract

[Problem] It is possible to reliably prevent the occurrence of bending at an unexpected point during fabrication, thereby providing a corrugated fin and a heat exchanger having the same, which can improve product precision and facilitate fabrication.
[Solution] A flat plate portion 5a each having a pair of side edges 11 and 11 'facing each other and a pair of end edges 12 and 12' facing each other, and a side edge of the flat plate portion 5a ( In the heat exchanger colgate fin 5 formed by alternately bending the collapsing portion 5b extending to 11, 11 'in a colgate shape, the joining portion 5b is connected to the tube 4 through which the heat exchange medium flows. It has the flat surface 20 joined, and the flat part 5a has two directions of the direction in which the pair of side edges 11 and 11 'are arrange | positioned, and the direction in which the pair of edges 12 and 12' are arrange | positioned. It is assumed that it has the recessed part 16 or the convex parts 17 and 18 in arbitrary cutting surfaces.

Description

Corrugated fin and heat exchanger having the same {CORRUGATED FIN AND HEAT EXCHANGER WITH SAME}

TECHNICAL FIELD The present invention relates to a colgate fin for dissipating heat of a heat exchange medium in a heat exchanger such as a radiator, an oil cooler, an after cooler, and a heat exchanger having the same.

For example, an engine, a radiator, a cooling fan device, and the like are provided in a predetermined arrangement in an engine room in a working vehicle such as a hydraulic excavator or a bulldozer. The cooling fan generates a flow of cooling air passing through the radiator to cool the engine coolant circulated between the engine and the radiator.

The radiator is mainly provided with the upper tank, the lower tank, the some tube, and the fin.

The upper tank and the lower tank are connected by a plurality of tubes arranged at predetermined intervals. Accordingly, the engine coolant sent out from the engine is once stored in the upper tank, collected through the plurality of tubes in the lower tank, and then refluxed to the engine.

The pins are arranged between the tubes adjacent to each other and joined to the tubes by joining means such as soldering.

As the pin, there is a colgate pin formed by a flat plate portion each having a pair of side edges facing each other and a pair of end edges facing each other and a junction portion extending to the side edge of the flat plate alternately bent in a colgate shape ( For example, see patent documents 1-3).

Japanese Unexamined Patent Publication No. 2007-232246 Japanese Unexamined Patent Publication No. 2002-228379 Japanese Unexamined Patent Publication No. 9-155487

The colgate pin is produced through, for example, a groove forming step and a colgate forming step.

The groove forming step is a step of forming a plurality of grooves in the plate surface by passing a strip-shaped thin plate drawn out from the thin plate coil between a pair of rolls for groove forming, or by press working using a press machine.

The colgate forming step is a step in which the flat plate portion and the joint portion are bent alternately in a colgate shape by passing the strip-shaped thin plate after the groove forming process is carried out between a pair of rolls for colgate forming.

By the way, as a groove | channel which adheres to a strip | belt-shaped thin plate by the said groove | channel shaping | molding process, the groove | channel extended in the direction in which the pair of side edges of a flat plate part is arrange | positioned, for example. As another example, there is a groove extending in a direction in which a pair of end sides of the flat plate portion is disposed.

By forming grooves extending in the direction in which the pair of side edges are arranged, the cross section coefficient of the cut surface along the direction in which the pair of end edges are arranged can be increased. As a result, the rigidity of the flat plate portion can be increased with respect to the bending action of bringing the pair of side edges closer together. However, in this case, since the cross-sectional coefficient of the cut surface along the direction in which the pair of side edges are arranged cannot be increased, the rigidity of the flat plate portion cannot be increased for the bending action of bringing the pair of edges closer together.

By forming grooves extending in the direction in which the pair of end edges are arranged, the cross section coefficient of the cut surface along the direction in which the pair of side edges are arranged can be increased. As a result, the rigidity of the flat plate portion can be increased with respect to the bending action of bringing the pair of ends closer together. However, in this case, since the cross-sectional coefficient of the cut surface along the direction in which the pair of end edges are arranged cannot be increased, the rigidity of the flat plate portion cannot be increased for the bending action of approaching the pair of side edges.

Therefore, the conventional corrugated pin has the problem that bending may occur at an unexpected location during fabrication, more specifically, during the corrugated forming process, and the error of the shape dimension becomes large.

For this reason, when assembling the radiator core by alternately stacking the corrugated fin and the tube, an error in the shape dimension of the corrugated fin may accumulate and bend in the radiator core, resulting in difficulty in improving product accuracy. have. In addition, attempting to correct the error of the shape dimension of the corrugated pin takes extra effort and time, and if it is attempted to assemble so that the errors of the shape dimension of the corrugated pin cancel each other, high function is required and the production becomes difficult. There is a problem.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and it is possible to reliably prevent the occurrence of bending at an unexpected point during fabrication, thereby improving the product precision and facilitating fabrication. And a heat exchanger having the same.

In order to achieve the above object, the colgate pin according to the first invention is

A colgate fin for a heat exchanger, wherein a flat plate portion each having a pair of side edges facing each other and a pair of end edges facing each other and a junction portion extending on the side edge of the flat plate are alternately bent in a colgate shape,

The joining portion has a flat surface joined to a tube through which a heat exchange medium flows,

The said flat plate part is characterized by having at least 1 concave part or convex part in arbitrary cutting surfaces in two directions of the direction in which the said pair of side edges are arrange | positioned, and the direction in which the said pair of edge sides are arrange | positioned.

In 1st invention, it is preferable that the flat surface of the said junction part is formed in planar shape (2nd invention).

In 1st invention, it is preferable that the flat surface of the said junction part is formed in curved shape (3rd invention).

In 1st invention-3rd invention, it is preferable that two or more said recessed parts or convex parts are formed (4th invention).

Next, the heat exchanger according to the fifth invention,

It is characterized by including the corrugated fin according to any one of the first to fourth inventions.

EFFECTS OF THE INVENTION [

In the corrugated fin of the first aspect of the invention, at least one concave portion or convex portion is formed in the flat plate at any cut surface in two directions in a direction in which a pair of side edges are arranged and in a direction in which a pair of end edges are arranged. Thereby, the cross section coefficient of the cut surface along the direction in which a pair of end edges are arrange | positioned can be enlarged, and the cross section coefficient of the cut surface along the direction in which a pair of side edges are arrange | positioned can be enlarged. For this reason, the rigidity of a flat plate part can be improved with respect to both the bending action which approaches a pair of side edges, and the bending action which approaches a pair of edge edges.

In addition, the concave portion or the convex portion which is formed in the flat plate portion is not formed in the junction part. This makes it possible to have a large difference in rigidity between the flat plate portion and the bonded portion, and can be easily and surely bent at the boundary between the flat plate portion and the bonded portion.

According to the corrugated fin of the first aspect of the invention, it is possible to reliably prevent the occurrence of bending at an unexpected point during the manufacture of the corrugated fin, and to reduce the error in the shape dimension of the corrugated fin.

In addition, by adopting the configuration of the second invention, the joining area and the thermal contact area with respect to the tube can be large. Therefore, the colgate fin and the tube can be more firmly bonded, and the heat dissipation effect by the colgate fin can be further enhanced.

In addition, the stress concentration of the bent portion can be avoided by adopting the configuration of the third invention.

In addition, by adopting the configuration of the fourth aspect of the invention, the rigidity of the flat plate portion can be increased more reliably, and it is possible to bend more easily and surely at the boundary portion between the flat plate portion and the junction portion.

According to the heat exchanger of 5th invention, there exists an effect that product precision becomes high and its manufacture becomes easy.

1 is an overall perspective view of a radiator according to a first embodiment of the present invention,
2 is an enlarged perspective view of part X of FIG. 1;
FIG. 3 is an explanatory view of the structure of the flat plate viewed in the direction of the Y arrow of FIG. 2 (a), AA cross-sectional view (b) of (a), BB cross-sectional view (c) of (a), and B'- of (a) B 'line cross section (d),
4 is an enlarged view of main parts viewed in the direction of the Z arrow of FIG. 2;
5 is an explanatory view (d) of a planar shape in a manufacturing method explanatory diagram (a), a pre-colgate state diagram (b) and a post-colgate state diagram (c), and a planar shape explanatory diagram (d) ) And an example of curved surface (e),
6 is an explanatory diagram of a modification of the colgate pin according to the first embodiment;
Fig. 7 is a structural explanatory diagram of the flat plate portion of the corrugated fin according to the second embodiment (a), CC cross-sectional view (b) of (a), DD line cross-sectional view (c) of (a), and D of (a). '-D' line cross section (d),
Fig. 8 is a structural explanatory diagram of the flat plate portion of the corrugated fin according to the third embodiment (a), sectional views taken along the E-E line (b) in (a), and FF line sectional views (c) in (a), and (a). F'-F 'line cross section of (d),
9 is an explanatory diagram of a structure of a flat plate portion of a corrugated fin according to a fourth embodiment (a), a cross-sectional view taken along the line GG of (a), and a cross-sectional view of the line HH of (a),
Fig. 10 is a structural explanatory diagram of the flat plate portion of the corrugated fin according to the fifth embodiment (a), II cross-sectional view (b) of (a), and JJ cross-sectional view (c) of (a),
11 is an explanatory diagram of a structure of a flat plate portion of a corrugated fin according to a sixth embodiment (a), a cross-sectional view taken along the line KB of (a), and a cross-sectional view taken along the line LL of (a),
12 is an explanatory view of the structure of the flat plate portion of the corrugated fin according to the seventh embodiment (a), MM line sectional view (b), and (M) line sectional view (c), (a) NN line cross section (d) of (), and N'-N 'line cross section (e) of (a),
Fig. 13 is a structural explanatory diagram of the flat plate portion of the corrugated fin according to the eighth embodiment (a), a sectional view of the QQ line (b) of (a), and a RR line sectional view (c) of (a),

Next, specific embodiments of the colgate fin and the heat exchanger having the same according to the present invention will be described with reference to the drawings. Hereinafter, an example in which the present invention is applied to a radiator installed in an engine room in a work vehicle such as a hydraulic excavator or bulldozer will be described. However, the present invention is also applied to a heat exchanger such as an oil cooler or an aftercooler having the same basic structure as the radiator. Needless to say, you can do it.

[First Embodiment]

Fig. 1 shows an overall perspective view of a radiator having a corrugated fin according to the first embodiment of the present invention.

<Description of the schematic structure of the radiator>

The radiator 1 shown in FIG. 1 is a device in which engine coolant (heat exchange medium) circulated between the radiator 1 and an engine not shown dissipates heat obtained from an engine.

This radiator 1 is mainly comprised with the upper tank 2, the lower tank 3, the tube 4, and the colgate fin 5. As shown in FIG.

The upper tank 2 and the lower tank 3 are connected by the some tube 4. Accordingly, the engine coolant sent out from the engine can be stored in the upper tank 2 once, collected in the lower tank 3 through the plurality of tubes 4, and then refluxed to the engine.

In addition, the radiator core 6 is assembled by alternately stacking the tube 4 and the corrugated fin 5.

<Description of the tube>

As shown in FIG. 2, the tube 4 is comprised from the flat pipe member which has the flow path 4a of engine cooling water inside.

A plurality of tubes 4 are arranged with a predetermined gap S in the depth direction RD of the radiator 1 at a predetermined pitch Pa in the width direction RW of the radiator 1.

<Summary of Colgate Pin>

The corrugated fins 5 are arranged between the tubes 4 adjacent to each other in the width direction RW of the radiator 1. The corrugated fin 5 is formed by alternately bending the flat plate portion 5a and the junction portion 5b into a colgate shape.

<Schematic explanation of the flat plate part>

The flat plate portion 5a is a pair of side edges 11 and 11 'facing each other in the width direction RW of the radiator 1 and a pair of facing sides in the depth direction RD of the radiator 1. It is a rectangular plate part which has the edges 12 and 12 '.

<Description of the groove-shaped recess of the flat plate part>

As shown in FIG. 3A, a plurality of grooves are formed at equal intervals at a predetermined pitch Pb in a direction FD in which a pair of end edges 12, 12 'are arranged on the surface of the flat plate portion 5a. The recessed part 13 is formed.

The groove-shaped recess 13 is obliquely straight in a direction from one side edge 11 to the other side 11 'from the side edge 11 on the other side as it progresses from the one end side 12 to the other end 12'. It is a recess extending to.

In the groove-shaped concave portion 13 adjacent to each other, the groove-shaped concave so that a part of the groove-shaped concave portions 13 adjacent to each other overlap when viewed from the direction FW in which the pair of side edges 11 and 11 'are arranged. The pitch Pb, the inclination angle of the arrangement of the portions 13, the size of the length and the width of the groove-shaped recess 13, and the like are determined.

In addition, by forming the plurality of groove-shaped recesses 13 on the surface of the flat plate portion 5a, the portions between the groove-shaped recesses 13 adjacent to each other become relatively striped convex portions 14. In addition, by forming the groove-shaped recessed portion 13 on the surface of the plate-shaped portion 5a on the back surface of the flat plate portion 5a, the striped convex portion 15 corresponding to the groove-shaped recessed portion 13 (Fig. 3 (b), 3 (c)].

<Description of the irregularities of any cut surface of the flat plate portion>

As shown in Fig. 3 (b), the flat plate portion 5a has a plurality of groove-like recesses 13 in any cut surface in the direction FD in which the pair of end edges 12, 12 'are arranged. It has a some recessed part 16 by. In other words, the flat plate portion 5a includes a plurality of convex portions formed by the plurality of stripe-shaped convex portions 14 and 15 in any cut surface in the direction FD in which the pair of edges 12 and 12 'are arranged. We have wealth (17, 18).

3 (c) and 3 (d), the flat plate portion 5a has a groove shape at an arbitrary cut surface in the direction FW in which the pair of side edges 11 and 11 'are arranged. The recessed part 16 by the recessed part 13 is provided. In other words, the flat part 5a has the convex part 17 by the stripe-shaped convex parts 14 and 15 in the arbitrary cutting surface in the direction FW in which the pair of side edges 11 and 11 'are arrange | positioned. 18). In addition, as shown in FIG.3 (c), in the BB line cross section of the flat plate part 5a, the one by one recessed part 16 or the stripe-shaped convex part 15 by the groove-shaped recessed part 13 is carried out. Two convex portions 18 are present, but as shown in Fig. 3 (d), in the B'-B 'line cross-section, two concave portions 16 or stripe convex portions formed by the groove-shaped concave portions 13 ( There are two convex parts 18 by 15).

<Schematic explanation of the junction part>

As shown in FIG. 4, the joining portion 5b is a rectangular plate portion that is perpendicular to the flat plate portion 5a, is narrower than the flat plate portion 5a, and has a flat surface 20 joined to the tube 4. This flat surface 20 has a planar shape parallel to the surface 21 of the tube 4.

Here, the flat surface 20 has a concept of being completely flat because there is no undulation, and inevitably at the time of groove forming processing for forming the groove-shaped recess 13 in the flat plate portion 5a. It includes both of the concepts of an approximately flat surface with a very shallow groove (processing residue) that can be neglected compared to the recess 13.

<Description of Bonding of Colgate Pins and Tubes>

The corrugated fin 5 and the tube 4 are joined by soldering using the brazing material 22 interposed between the flat surface 20 of the joint portion 5b and the surface 21 of the tube 4.

Since the flat surface 20 of the junction part 5b is planar shape, the joining area and thermal contact area with respect to the tube 4 can be made larger than the case where the flat surface 20 is a curved shape or an angular surface shape.

Since the joint area of the flat surface 20 of the junction part 5b and the surface 21 of the tube 4 can be taken large, the corrugated fin 5 and the tube 4 can be joined more firmly.

Since the thermal contact area between the flat surface 20 of the junction 5b and the surface 21 of the tube 4 can be large, the heat of the engine coolant flowing through the tube 4 can be transferred from the tube 4 to the colgate fin ( 5) can be conducted efficiently, and the heat dissipation effect by the corrugated fin 5 can be further enhanced.

<Description of the manufacturing method of the corrugated pin>

Next, the manufacturing method of the colgate pin 5 is demonstrated below, referring FIG. 5 (a).

The manufacturing method of the colgate pin 5 includes the groove forming process and the colgate forming process.

<Description of Groove Forming Process>

In the groove forming step, the strip-shaped thin plate 30a of the corrugated fin material drawn out from the thin plate coil 30 passes between the pair of first rolls 31 and 31 'to form a plurality of groove-shaped recesses on the plate surface. 13) is a step of forming.

In the pair of first rolls 31 and 31 ′, a plurality of uneven portions, not shown, corresponding to the plurality of groove-shaped recesses 13 to be attached to the strip-shaped thin plates 30a are formed on the respective outer peripheral surfaces thereof. . When the pair of first rolls 31, 31 'are rotationally driven in the direction of the arrow in the figure, the strip-shaped thin plates 30a are sandwiched between the pair of first rolls 31, 31' and are sent out downstream. At this time, the strip-shaped thin plate 30a is sandwiched between the concave portion in the first roll 31 on one side and the convex portion in the first roll 31 'on the other side of the strip-shaped thin plate 30a. A plurality of groove-shaped recesses 13 are attached to the plate surface.

Moreover, the some groove-like recessed part 13 similar to the board surface of the strip-shaped thin plate 30a can also be attached by the press working using a press machine.

<Description of Colgate Forming Process>

The colgate forming process is a pair of second rolls in which the strip-shaped thin plates 30a drawn out from between the pair of first rolls 31 and 31 'are disposed downstream of those first rolls 31 and 31'. By passing between (32, 32 '), the flat plate portion 5a and the bonding portion 5b are alternately bent so as to be continuous in a colgate shape.

In the pair of second rolls 32 and 32 ', not shown for bending the strip-shaped thin plate 30a to the colgate shape after the plurality of groove-like recesses 13 are attached to the plate surface on each outer peripheral portion thereof. The plurality of teeth which are not formed are formed to be meshed with each other. When the pair of second rolls 32, 32 'are rotationally driven in the direction of the arrow in the figure, the strip-shaped thin plates 30a are sandwiched between the pair of second rolls 32, 32' and fed out downstream. At this time, the strip-shaped thin plate 30a is sandwiched between the teeth and the teeth in the second roll 32 on one side and the teeth in the second roll 32 'on the other side. 30a is formed to be bent in a colgate shape.

In addition, as shown in Fig. 5 (b), the plurality of groove-shaped recesses 13 and these groove-shaped recesses 13 are attached to the strip-shaped thin plate 30a before the Colgate molding is performed. There is a portion (part shown by a symbol T arrow in the figure) without any uneven portion of the plurality of stripe-shaped convex portions 14. Then, the Colgate molding is performed so that this portion becomes the joint portion 5b having the flat surface 20 (see Fig. 5C).

Here, as the shape of the flat surface 20, as shown in FIG. 5 (d) in the present embodiment, the shape is flat, but is not limited thereto. As shown in FIG. Included. By forming the flat surface 20 in a curved shape, stress concentration in the bent portion can be avoided.

In this way, the colgate pins 5 obtained through the colgate forming step are sandwiched between the tubes 4 adjacent to each other and joined to the tubes 4 by soldering.

<Description of Effects of the First Embodiment>

In the corrugated fin 5 of the first embodiment, as shown in Figs. 3B and 3C, the direction FW in which the pair of side edges 11 and 11 'are arranged and the pair of end edges are arranged. The convex portion 16 by the groove-shaped concave portion 13 or the convex portion by the stripe-shaped convex portions 14 and 15 at an arbitrary cut surface in two directions of the direction FD in which the (12, 12 ') are arranged. 17 and 18 are formed in the flat plate part 5a. Accordingly, the cross-sectional coefficient of the cut surface along the direction FD in which the pair of end edges 12 and 12 'are arranged can be increased, and the direction FW in which the pair of side edges 11 and 11' are arranged. It is possible to increase the cross-sectional coefficient of the cut surface along. For this reason, the rigidity of the flat plate part 5a can be improved with respect to both the bending action which makes a pair of side edges 11 and 11 'approach, and the bending action which makes a pair of end edges 12 and 12' approach.

In addition, in the junction part 5b, the concave part 16 and the convex part 17 and 18 by the strip | belt-shaped convex part 14 and 15 by the groove-shaped recessed part 13 formed in the flat plate part 5a are also provided. Is not formed. As a result, the difference in rigidity can be made large between the flat plate part 5a and the junction part 5b, and it can be easily and reliably bent at the boundary part of the flat plate part 5a and the junction part 5b.

Therefore, it is possible to reliably prevent the occurrence of bending at an unexpected point during the manufacture of the colgate pin 5, more specifically during the colgate forming process, thereby reducing the error in the shape dimension of the colgate pin 5. It can be suppressed.

In the radiator 1 of 1st Embodiment, the radiator core 6 is assembled by alternately laminating | stacking the tube 4 and the corrugated fin 5. Since the error of the shape dimension of the corrugated fin 5 is suppressed small, warpage does not occur in the radiator core 6 and the product precision can be improved. Moreover, since the correction | amendment work of the error of the shape dimension of the corrugated pin 5 and the advanced function which cancel each other error are unnecessary, the manufacture is also easy.

<Description of Modified Example of First Embodiment>

6 (a) to 6 (f) are plan views of the flat plate portion 5a according to a modification of the colgate pin 5 of the first embodiment.

In the corrugated fin 5 of the first embodiment, two of the direction FW in which the pair of side edges 11 and 11 'are arranged and the direction FD in which the pair of end edges 12 and 12' are arranged. At least one recessed part 16 by the groove-shaped recessed part 13 is formed in the flat plate part 5a in arbitrary cutting surfaces in the direction. The configuration can be changed as appropriate within the scope not departing from the gist of this configuration.

For example, as shown in Fig. 6A, instead of the groove-shaped recess 13, a groove-shaped recess 13A having a larger groove width than the groove-shaped recess 13 can be employed.

In addition, as shown in Fig. 6B, the pitch of the arrangement of the groove-shaped recesses 13 can be changed to a pitch Pc smaller than Pb.

In addition, as shown in Fig. 6C, the pitch of the arrangement of the groove-shaped recesses 13 can be two or more different pitches Pd and Pe.

In addition, as shown in Fig. 6D, the groove-shaped recesses 13 and 13A having different sizes of the groove widths can be alternately arranged.

In addition, as shown in Fig. 6E, a plurality of groove-like recesses 13B having a shorter length than that of the groove-like recesses 13 are arranged differently. can do.

In addition, the groove-shaped recess 13 progresses in a direction from one end 12 of one side of the flat plate portion 5a toward the other end 12 'of the other side, and thus the side 11 11 of the other side from the side 11 of one side. A concave portion extending in an oblique straight line in the direction toward), but a concave portion extending in the opposite direction, that is, the other side from the end side 12 of one side of the flat plate portion 5a as shown in FIG. The groove-shaped recess 13C extending obliquely in a straight line in the direction toward the side 11 of one side from the other side 11 'may be employed as it proceeds in the direction toward the end 12'.

[2nd Embodiment? 8th Embodiment]

Next, each of the corrugated pins 5A to 5G according to the second to eighth embodiments of the present invention will be described in order. In addition, in each following embodiment, the same code | symbol is attached | subjected to drawing, and the detailed description is abbreviate | omitted about the same or same thing as 1st embodiment, and it demonstrates centering around a different point from 1st embodiment below. Shall be.

<2nd embodiment (refer FIG. 7 (a)): description of the groove-shaped recessed part of a flat plate part>

As shown in Fig. 7A, in the colgate pin 5A of the second embodiment, the surface of the flat plate portion 5a is predetermined in a direction FD in which a pair of end edges 12, 12 'are arranged. A plurality of groove-shaped recesses 40 are formed at equal intervals at the pitch Pf.

The groove-shaped recessed part 40 is comprised by the 1st groove-shaped recessed part 40a and the 2nd groove-shaped recessed part 40b, and when the other edge 12 'of the flat part 5a is made up, The first groove-shaped recess 40a and the second groove-shaped recess 40b are concave portions that are continuous in a V-shape as viewed in a plane.

The first groove-shaped concave portion 40a has the central portion in the direction FW in which the pair of side edges 11, 11 'of the flat plate portion 5a are arranged, starting from one end edge 12 on the other side. As it progresses in the direction toward (12 '), it is a concave part extended diagonally in a straight line in the direction toward the side side 11' of the other side from 11 side.

The second groove-shaped concave portion 40b is the end side of the other side from the end side 12 of one side, starting from the center portion of the direction FW in which the pair of side edges 11, 11 'of the flat plate portion 5a are disposed. As it progresses in the direction toward (12 '), it is a recess extended diagonally in a straight line in the direction toward the side side 11 of one side from the other side 11'.

<See 2nd Embodiment (FIG. 7 (b), 7 (c), 7 (d)): Description of the uneven | corrugated part of the arbitrary cut surfaces of a flat plate part>

As shown in Fig. 7 (b), the flat plate portion 5a has a plurality of groove-shaped recesses 40 in any cut surface in the direction FD in which the pair of end edges 12, 12 'are arranged. It has a some recessed part 41 by it. In other words, the flat plate portion 5a has a plurality of convex portions formed by the plurality of stripe-shaped convex portions 42 and 43 at any cut surface in the direction FD in which the pair of end edges 12 and 12 'are arranged. It has a portion (44, 45).

7 (c) and 7 (d), the flat plate portion 5a has a groove shape in any cut surface in the direction FW in which the pair of side edges 11 and 11 'are arranged. It has the recessed part 41 by the recessed part 40. FIG. In other words, the flat part 5a has the convex part 44 by the stripe-shaped convex parts 42 and 43 in the arbitrary cutting surface in the direction FW in which the pair of side edges 11 and 11 'are arrange | positioned. 45). In addition, as shown in FIG.7 (c), in the DD line cross section of the flat plate part 5a, the one by one recessed part 41 or the stripe-shaped convex part 43 by the groove-shaped recessed part 40 is used. Two convex portions 45 are present, but as shown in Fig. 7 (d), two concave portions 41 or stripe convex portions formed by the groove-shaped concave portions 40 in the cross-section of the line D'-D '. There are two convex portions 45 by 43.

<3rd embodiment (refer FIG. 8 (a)): description of the groove-shaped recessed part of a flat plate part>

As shown in Fig. 8A, in the corrugated fin 5B of the third embodiment, the surface of the flat plate portion 5a is predetermined in a direction FD in which a pair of end edges 12, 12 'are arranged. A plurality of groove-shaped recesses 46 are formed at equal intervals at the pitch Pg.

The groove-shaped concave portion 46 is a concave portion bent in an arc shape so as to swell to the end side 12 side of one side between the side side 11 of one side and the side side 11 'of the other side.

<3rd embodiment (refer FIG. 8 (b), 8 (c), 8 (d)): description of the uneven | corrugated part of arbitrary cut surfaces of a flat plate part>

As shown in Fig. 8 (b), the flat plate portion 5a has a plurality of groove-like recesses 46 at any cut surface in the direction FD in which the pair of end edges 12, 12 'are arranged. It has a some recessed part 47 by it. In other words, the flat plate portion 5a has a plurality of convex portions formed by the plurality of stripe-shaped convex portions 48 and 49 at any cut surface in the direction FD in which the pair of end edges 12 and 12 'are arranged. It has a portion (50, 51).

Moreover, as shown to FIG.8 (c), 8 (d), groove shape in the arbitrary cutting surface in the direction FW in which the flat part 5a and the pair of side edges 11 and 11 'are arrange | positioned. It has the recessed part 47 by the recessed part 46. FIG. In other words, the convex part 50 by the stripe-shaped convex parts 48 and 49 in the arbitrary cutting surface in the direction FW in which the flat plate part 5a and the pair of side edges 11 and 11 'are arrange | positioned. 51). In addition, in the FF line cross section of the flat plate part 5a, as shown in FIG.8 (c), 1 by one recessed part 47 or the stripe-shaped convex part 49 by the groove-shaped recessed part 46 is carried out. Although two convex portions 51 exist, two concave portions 47 or stripe convex portions formed by the groove-shaped concave portions 46 in the F'-F 'line cross section as shown in Fig. 8D. There are two convex portions 51 by 49.

<4th embodiment (refer FIG. 9 (a)): description of the groove-shaped recessed part of a flat plate part>

As shown in Fig. 9 (a), in the corrugated fin 5C of the fourth embodiment, the surface of the flat plate portion 5a is predetermined in the direction FD in which a pair of end edges 12, 12 'are arranged. A plurality of groove-shaped recesses 52 are formed at equal intervals at the pitch Ph.

The groove-shaped recess 52 is constituted by the first groove-shaped recess 52a, the second groove-shaped recess 52b, the third groove-shaped recess 52c and the fourth groove-shaped recess 52d. The first groove-shaped recess 52a, the second groove-shaped recess 52b and the third groove-shaped recess are viewed in a plane when the other end 12 'of the flat plate portion 5a is placed upward. The portion 52c and the fourth groove-shaped recess 52d are recessed portions that are continuous in a W shape.

The first groove-shaped concave portion 52a starts from the center portion of the direction FW in which the pair of side edges 11 and 11 'of the flat plate portion 5a are disposed and the middle portion of the side edge 11' on the other side. As it progresses toward one end side 12 'from the other end side 12 on the other side, it is a concave portion extending in an oblique straight line in the direction from the side side 11 on one side to the side side 11' on the other side.

The second groove-shaped concave portion 52b starts from the center portion of the direction FW in which the pair of side edges 11 and 11 'of the flat plate portion 5a are disposed and the middle portion of the side edge 11' on the other side. As it progresses toward one end side 12 'from the other end side 12 on one side, it is a concave portion extending in an oblique straight line in a direction from the other side side 11' to the one side side 11.

The third groove-shaped concave portion 52c has a center portion in the direction FW in which the pair of side edges 11 and 11 'of the flat plate portion 5a are arranged and a middle portion of the side edge 11 on one side as a starting point. It is a concave portion extending in an oblique straight line in a direction from one side edge 11 to the other side edge 11 'from one side edge 12 toward the other side edge 12'.

The fourth groove-shaped recess 52d has a center portion in the direction FW in which the pair of side edges 11 and 11 'of the flat plate portion 5a are arranged and a middle portion of the side edge 11 on one side as a starting point. It is a concave portion extending in an oblique straight line in the direction from the side side 11 'of the other side to the side side 11 of the one side as it progresses from the one end side 12 to the other end side 12'.

<4th embodiment (refer FIG. 9 (b), 9 (c)): description of the uneven | corrugated part of arbitrary cut surfaces of a flat plate part>

As shown in Fig. 9 (b), the flat plate portion 5a has a plurality of groove-shaped recesses 52 at any cut surface in the direction FD in which the pair of end edges 12, 12 'are arranged. It has a some recessed part 53 by. In other words, the flat plate portion 5a has a plurality of convex portions formed by the plurality of stripe-shaped convex portions 54, 55 in any cut surface in the direction FD in which the pair of end edges 12, 12 'are arranged. It has the portions 56 and 57.

In addition, as shown in Fig. 9C, the flat plate portion 5a has a groove-shaped concave portion 52 at any cut surface in the direction FW in which the pair of side edges 11 and 11 'are arranged. It has two or more recessed parts 53 by it. In other words, the flat part 5a has the convex part 56 by the stripe-shaped convex part 54, 55 in the arbitrary cutting surface in the direction FW in which the pair of side edges 11 and 11 'are arrange | positioned. 57) two or more.

<Fifth Embodiment (see Fig. 10 (a)): Description of Grooved Concave of Flat Plate Part>

As shown in Fig. 10 (a), in the colgate pin 5D of the fifth embodiment, the surface of the flat plate portion 5a is predetermined in the direction FW in which a pair of side edges 11 and 11 'are arranged. A plurality of groove-shaped recesses 58 are formed at equal intervals at the pitch Pi.

The groove-shaped recess 58 is constituted by the first groove-shaped recess 58a, the second groove-shaped recess 58b, the third groove-shaped recess 58c and the fourth groove-shaped recess 58d. The first groove-shaped recess 58a, the second groove-shaped recess 58b and the third groove-shaped recess are viewed in a plane when the side 11 'on the other side of the flat plate portion 5a is upward. The portion 58c and the fourth groove-shaped recessed portion 58d are recessed portions that are continuous in an M shape.

The first groove-shaped concave portion 58a has a central portion in the direction FD in which the pair of end edges 12, 12 'of the flat plate portion 5a are disposed, and the middle portion of one end edge 12 on one side. It is a concave portion extending in an oblique straight line in a direction from the other side side 11 'to the one side side 11 as it progresses from the other end side 12' toward the one end side 12.

The second groove-shaped concave portion 58b has a center portion in the direction FD in which the pair of end edges 12, 12 'of the flat plate portion 5a are disposed and a middle portion of the end edge 12 on one side as a starting point. It is a concave portion extending in an oblique straight line in the direction from the side side 11 'of the other side to the side side 11 of the one side as it progresses from the one end side 12 to the other end side 12'.

The third groove-shaped concave portion 58c starts from the center portion of the direction FD in which the pair of end edges 12, 12 'of the flat plate portion 5a are disposed and the middle portion of the end edge 12' of the other side. As it progresses in the direction from the other end side 12 'to the one end side 12, it is a concave part extended diagonally in a direction toward the side side 11 of one side from the other side 11'.

The fourth groove-shaped concave portion 58d starts from the center portion of the direction FD in which the pair of end edges 12, 12 'of the flat plate portion 5a are disposed and the middle portion of the other end edge 12'. As it progresses toward one end side 12 'from the other end side 12 on one side, it is a concave portion extending in an oblique straight line in a direction from the other side side 11' to the one side side 11.

<5th Embodiment (refer FIG. 10 (b), 10 (c)): description of the uneven | corrugated part of arbitrary cut surfaces of a flat plate part>

As shown in Fig. 10 (b), the flat plate portion 5a is formed by the groove-shaped concave portion 58 in any cut surface in the direction FD in which the pair of end edges 12, 12 'are arranged. It has two or more recesses 59. In other words, the flat part 5a has the convex part 62 by the stripe-shaped convex part 60, 61 in the arbitrary cutting surface in the direction FD in which the pair of edges 12 and 12 'are arrange | positioned. 63) you have two or more.

In addition, as shown in FIG. 10 (c), the flat plate portion 5a has a plurality of groove-shaped concave portions in an arbitrary cut surface in the direction FW in which the pair of side edges 11, 11 'are arranged. A plurality of recesses 59 by 58 are provided. In other words, the flat plate portion 5a has a plurality of convex portions formed by the plurality of stripe-shaped convex portions 60, 61 in any cut surface in the direction FW in which the pair of side edges 11, 11 'are arranged. It has a portion 62, 63.

<6th embodiment (refer FIG. 11 (a)): description of the groove-shaped recessed part of a flat plate part>

As shown in Fig. 11A, in the colgate pin 5E of the sixth embodiment, the surface of the flat plate portion 5a is predetermined in a direction FD in which a pair of end edges 12, 12 'are arranged. A plurality of first grooved concave portions 64 and second grooved concave portions 65 are formed at equal intervals at the pitch Pj.

As the first groove-shaped concave portion 64 proceeds in a direction from one end side 12 on one side to the other end side 12 'on the other side, the first groove-shaped recess 64 is obliquely directed in a direction from the side side 11 on one side to the side side 11' on the other side. It is a recess extending linearly.

As the second groove-shaped concave portion 65 proceeds in a direction from one end side 12 on one side to the other end side 12 'on the other side, the second groove-shaped recess 65 is obliquely in a direction from the side side 11' on the other side to the side side 11 on the one side. It is a recess extending linearly.

The plurality of first grooved recesses 64 and the plurality of second grooved recesses 65 intersect each other and are arranged in a mesh shape as a whole.

<6th Embodiment (refer FIG. 11 (b), 11 (c)): description of the uneven | corrugated part of arbitrary cut surfaces of a flat plate part>

As shown in Fig. 11 (b), the flat plate portion 5a has a plurality of groove-shaped recesses 64 in any cut surface in the direction FD in which the pair of end edges 12, 12 'are arranged. A plurality of recesses 66 formed by 65 are provided. In other words, the flat plate portion 5a includes a plurality of convex portions formed by the plurality of stripe-shaped convex portions 67 and 68 at any cut surface in the direction FD in which the pair of end edges 12 and 12 'are arranged. It has a portion (69, 70).

As shown in Fig. 11C, the flat plate portion 5a is provided with a plurality of groove-like recesses in any cut surface in the direction FW in which the pair of side edges 11, 11 'are arranged. A plurality of recesses 66 formed by 64 and 65 are provided. In other words, the flat plate portion 5a has a plurality of convexities formed by the plurality of stripe-shaped convex portions 67 and 68 in any cut surface in the direction FW in which the pair of side edges 11 and 11 'are arranged. It has a portion (69, 70).

<7th embodiment (refer FIG. 12 (a)): description of the groove-shaped recessed part of a flat plate part>

As shown in Fig. 12A, in the colgate pin 5F of the seventh embodiment, the first groove-shaped recess 71 and the second groove-shaped recess 72 are formed on the surface of the flat plate portion 5a. Is formed.

The first groove-shaped concave portion 71 has a corner portion intersecting with one side side 11 and one end side 12 and a corner portion intersecting with the other side side 11 'and the other end side 12'. It is the recessed part extended linearly in the.

The second groove-shaped concave portion 72 has a corner portion intersecting the other side edge 11 'and one end edge 12 and a corner portion intersecting the one side edge 11 and the other end edge 12'. It is the recessed part extended linearly in the.

The 1st groove-shaped recessed part 71 and the 2nd groove-shaped recessed part 72 are mutually arrange | positioned at the X shape.

<7th Embodiment (refer FIG. 12 (b), 12 (c), 12 (d), 12 (e)): description of the uneven | corrugated part of arbitrary cut surfaces of a flat plate part>

As shown in Figs. 12 (b) and 12 (c), the flat plate portion 5a has a groove-shaped recess in any cut surface in the direction FD in which the pair of end edges 12, 12 'are arranged. The recessed parts 73 and 74 by 71 and 72 are provided. In other words, the flat plate portion 5a is formed by the convex portions 77 by the stripe-shaped convex portions 75 and 76 in any cut surface in the direction FD in which the pair of end edges 12 and 12 'are arranged. 78). In addition, as shown in Fig. 12 (b), in the cross section of the MM line of the flat plate portion 5a, one concave portion 73 (74) or a stripe convex portion formed by the groove-shaped concave portion 71 (72). Although one convex portion 77 (78) by [75 (76)] exists, as shown in Fig. 12 (c), the groove-shaped concave portion 71 (72) in the cross section of the line M'-M '. There are two concave portions 77 (78) by the two concave portions 73 (74) or the striped convex portions 75 (76).

12 (d) and 12 (e), the flat plate portion 5a has a groove shape at an arbitrary cut surface in the direction FW in which the pair of side edges 11 and 11 'are arranged. It has a recessed part by the recessed parts 71 and 72. FIG. In other words, the flat plate portion has convex portions 77 and 78 by the stripe-shaped convex portions 75 and 76 in any cut surface in the direction FW in which the pair of side edges 11 and 11 'are arranged. do. In addition, as shown in Fig. 12 (d), in the NN line cross section of the flat plate portion 5a, one concave portion 73 (74) or a stripe convex portion formed by the groove-shaped concave portion 71 (72). There is one convex portion 77 (78) by [75 (76)], but as shown in Fig. 12E, the groove-shaped concave portion 71 (72) in the N'-N 'line cross section. There are two concave portions 77 (78) by the two concave portions 73 (74) or the striped convex portions 75 (76).

<Eighth Embodiment (see FIG. 13 (a)): Description of Grooved Concave in Flat Plate Part>

As shown in Fig. 13A, in the colgate pin 5G of the eighth embodiment, the direction FW and the one in which the pair of side edges 11 and 11 'are arranged on the surface of the flat plate portion 5a. A plurality of hemispherical recesses 79 are formed such that they are arranged differently in each of the directions FD in which the pair ends 12, 12 'are arranged.

When viewed from the direction FW in which the pair of side edges 11, 11 'are arranged in the hemispherical recesses 79 adjacent to each other in the direction FD in which the pair of edges 12, 12' are arranged. The pitch Pk, the magnitude | size of diameter, etc. of arrangement | positioning of the hemispherical recesses 79 are determined so that a part of the hemispherical recesses 79 adjacent to each other may overlap.

When viewed from the direction FD in which the pair of end edges 12, 12 'are arranged in the hemispherical recesses 79 adjacent to each other in the direction FW in which the pair of side edges 11, 11' are arranged. The pitch Pm and the size of the diameter of the arrangement of the hemispherical recesses 79 are determined so that a part of the hemispherical recesses 79 adjacent to each other overlap.

<Eighth Embodiment (refer FIG. 13 (b), FIG. 13 (c)): Description of the uneven | corrugated part of arbitrary cut surfaces of a flat plate part>

As shown in FIG. 13 (b), the flat plate portion 5a has a plurality of hemispherical recesses 79 in any cut surface in the direction FD in which the pair of end edges 12, 12 'are arranged. It has a some recessed part 80 by. In other words, the flat plate portion 5a includes a plurality of convex portions formed by the plurality of hemispherical convex portions 81 in any cut surface in the direction FD in which the pair of end edges 12, 12 'are arranged. 82).

In addition, as shown in FIG. 13 (c), the flat plate portion 5a includes a plurality of hemispherical recesses in any cut surface in the direction FW in which the pair of side edges 11 and 11 'are arranged. 79 has a plurality of recesses 80. In other words, the flat plate portion 5a includes a plurality of convex portions formed by the plurality of hemispherical convex portions 81 in any cut surface in the direction FW in which the pair of side edges 11 and 11 'are arranged. 82).

<Description of the effect of 2nd embodiment? 8th embodiment>

Also in any of the colgate pins 5A to 5G in the second to eighth embodiments, the direction FW in which the pair of side edges 11 and 11 'are disposed and the pair of end edges 12 and 12' are arranged. Concave portions 41, 47, 53 by at least one groove-shaped concave portion 40, 46, 52, 58, 64, 65, 71, 72 at any cut surface in the two directions of the direction FD to be disposed; 59, 66, 73, 74 or convex portions 44, 45, 50, 51 by the striped convex portions 42, 43, 48, 49, 54, 55, 60, 61, 67, 68, 75, 76 56, 57, 62, 63, 69, 70, 77, 78, or concave portion 80 by hemispherical concave portion 79 or convex portion 82 by hemispherical convex portion 81 It is formed in the portion 5a. Accordingly, the cross-sectional coefficient of the cut surface along the direction FD in which the pair of end edges 12 and 12 'are arranged can be increased, and the direction FW in which the pair of side edges 11 and 11' are arranged. It is possible to increase the cross-sectional coefficient of the cut surface along. Therefore, the same effect as the Colgate pin 5 of 1st Embodiment can be acquired also by any Colgate pin 5A-5G in 2nd Embodiment-8th Embodiment. As with the radiator 1 of 1st Embodiment, the radiator provided with such colgate pins 5A-5G becomes high in product precision, and its manufacture is also easy.

As mentioned above, although the colgate fin of this invention and the heat exchanger provided with the same were demonstrated based on some embodiment and modification, this invention is not limited to the structure described in the said embodiment and modification, Each embodiment and a modification The structure can be changed suitably in the range which does not deviate from the meaning, such as combining suitably the structure described in the example.

Industrial availability

The corrugated fin of the present invention and the heat exchanger having the same can be reliably prevented from bending at an unexpected point during fabrication, thereby improving product precision and facilitating fabrication. Therefore, it can be used suitably for applications such as a radiator, an oil cooler and an after cooler.

1: radiator (heat exchanger) 4: tube
5, 5A, 5B, 5C, 5D, 5E, 5F, 5G: Colgate pin
5a: plate portion 5b: junction portion
11, 11 ': Side 12, 12': End side
13: groove-shaped recessed part (1st embodiment)
13A: Groove-shaped recess (Modification of First Embodiment)
13B: Groove-shaped recess (Modification of First Embodiment)
15: groove-shaped convex part (1st embodiment)
16: recessed part (1st Embodiment)
17, 18: convex part (1st embodiment)
20: flat surface
40: groove-shaped recessed part (2nd embodiment)
41: recessed portion (second embodiment)
42, 43: striped convex portion (second embodiment)
44, 45: convex part (2nd embodiment)
46: groove-shaped recess (third embodiment)
47: recessed portion (third embodiment)
49, 48: stripe-shaped convex part (3rd embodiment)
50, 51: convex part (3rd embodiment)
52: groove-shaped recess (fourth embodiment)
53: recessed portion (fourth embodiment)
54, 55: stripe convex portion (fourth embodiment)
56, 57: convex part (4th embodiment)
58: groove-shaped recess (5th embodiment)
59: recessed part (5th embodiment)
60, 61: stripe-shaped convex part (5th embodiment)
62, 63: convex portions (5th embodiment)
64, 65: groove-shaped recessed part (sixth embodiment)
66: recessed portion (sixth embodiment)
67 and 68: striped convex portions (sixth embodiment)
69 and 70: convex portions (sixth embodiment)
71 and 72: stripe-shaped recessed part (7th Embodiment)
73, 74: recessed part (7th embodiment)
75, 76: stripe-shaped convex part (7th Embodiment)
77, 78: convex part (7th embodiment)
79: hemispherical recess (eighth embodiment)
80: recess (eighth embodiment)
81: hemispherical convex portion (eighth embodiment)
82: convex portion (eighth embodiment)

Claims (5)

In a colgate fin for a heat exchanger, wherein a flat plate portion each having a pair of side edges facing each other and a pair of end edges facing each other and a joint extending from the side edge of the flat plate are alternately bent in a colgate shape:
The joining portion has a flat surface joined to a tube through which a heat exchange medium flows,
And said flat plate portion has at least one concave portion or convex portion at an arbitrary cutting surface in two directions in a direction in which said pair of side edges are arranged and in a direction in which said pair of end edges are arranged. The method of claim 1,
Colgate pins, characterized in that the flat surface of the junction is formed in a planar shape. The method of claim 1,
Colgate pin, characterized in that the flat surface of the junction portion is formed in a curved shape. The method according to any one of claims 1 to 3,
Colgate fins, characterized in that two or more concave portions or convex portions are formed. The heat exchanger provided with the corrugated fin as described in any one of Claims 1-4.

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