JP2016121847A - Heat exchanger and its process of manufacture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat exchanger of which processing and assembling can be easily carried out and its price is less-expensive and that can be manufactured in compliance with a length of extrusion material unit, optional setting of the number of overlapping steps and a required heat exchange capacity.SOLUTION: An extrusion material unit 1 is formed in such a way that blocks 3A, 3B are arranged at both right and left sides of a horizontal fin 2 to form a lateral I-shape. The first salient part 5, the first step part 6, the second salient part 10 and the second step part 11 are protruded at the upper surface of the block, the bottom surface of the block is formed with the third fitting concave part 15, the fourth fitting concave part 17, the first engaging part 16 and the second engaging part 18 by notching fin side corners. This unit is reversed at right side and left side and several units are overlapped and fitted to each other, opposing both surfaces near both ends of the main body part forming flow passages between the upper fin 2 and the lower fin 2 are notched to expose the flow passages, one of them is applied as a fluid flow inlet and the other is applied as a fluid flow outlet and both ends are closed by a cover.SELECTED DRAWING: Figure 1

Description

The present invention relates to improvements in heat exchangers used for air conditioning equipment and heat exchangers used for cooling control equipment.

In general, a heat exchanger performs cooling or heating by bringing a high temperature first fluid such as liquid or gas into contact with a low temperature second fluid such as liquid or gas via a flow path. In the heat exchanger used in the air conditioner, the first flow path through which the first fluid flows and the second flow path through which the second fluid flow have corrugated corrugated paper made on one side of the paper sheet. A plurality of first flow paths and second flow paths are orthogonally stacked and stacked alternately (Patent Document 1). However, this stacked heat exchanger has a problem that the corrugate processing and the stacking work require a lot of labor and the strength is weak.

For this reason, a heat exchanger with improved assemblability has been proposed using an extruded aluminum material obtained by extruding a flow path. For example, an aluminum extrudate is sandwiched between an upper flat plate and an intermediate flat plate, a trapezoidal and rhombic first fluid flow path is formed between them, and an aluminum extrudate is further formed between the intermediate flat plate and the lower flat plate. There is a heat exchanger (Patent Document 2) in which a formed side wall portion for spacing is provided and a fin portion is provided between the horizontal intermediate plate and the lower plate to form a second fluid flow path. However, although the structure using the extruded aluminum material is excellent in strength, it has a large number of parts and is troublesome to process, and there is a problem that it is expensive to manufacture according to the required heat exchange capacity. It was.

JP 2001-241867 A JP-A-5-39992

The present invention improves the above problems, is easy and inexpensive to process and assemble, and can be manufactured according to the required heat exchange capacity by arbitrarily setting the length of the extruded material unit and the number of overlapping stages. In addition, the present invention provides a heat exchanger excellent in heat exchange performance and durability and a method for manufacturing the same.

The heat exchanger according to claim 1 of the present invention is formed in a horizontal I shape by providing block portions on the left and right sides of a horizontal fin formed of a flat plate, and an outer surface on the upper side of one block portion, The width between the side surface on the fin side is formed wider than the width between the outer side surface on the upper side of the other block portion and the side surface on the fin side, and the outer side surface and the fin on the lower side of one block portion. Aluminum extrusion material unit in which the width between the side surfaces on the side is formed narrower than the width between the outer side surface and the side surface on the fin side on the lower side of the other block part, and the widths of the fin upper surface and the bottom surface are equal. Of the extruded body unit of the main body part in which a plurality of flow paths shifted in the lateral direction are alternately formed between the upper and lower fins in a plurality of stages. Cut opposite sides near both ends along the extrusion direction To expose the flow path, with the one along the extrusion direction to the inlet of the fluid other and the outlet of the fluid, is characterized in that it has closed at both ends along the extrusion direction.

The heat exchanger according to claim 2 of the present invention is formed in a horizontal I shape by providing block portions on the left and right sides of a horizontal fin formed of a flat plate, and the first convex portion is formed on the upper surface of one block portion. The first step portion protrudes on the fin side and the second step portion protrudes on the upper surface of the other block portion substantially symmetrically with the upper surface of one block portion on the second convex portion and the fin side. The width of the upper side of the block part between the outer side surface and the side surface on the fin side of the first step part is the width between the outer side surface of the other block part and the side surface on the fin side of the second step part. The first engagement portion is formed by cutting out the third fitting recess and the fin side corner on the bottom surface of one block portion, and one block on the bottom surface of the other block portion. The second engaging portion is formed by cutting out the fourth fitting recess and the fin side corner substantially symmetrically with the bottom surface of the portion, and The width between the outer side surface on the part side and the side surface on the fin side of the first engaging portion is between the outer side surface on the lower side of the other block portion and the side surface on the fin side of the second engaging portion. An aluminum extruded material unit formed narrower than the width and having the same width on the top and bottom surfaces of the fin is formed, and the extruded material units are reversed left and right and stacked alternately to form a first protrusion of the lower extruded material unit. Is engaged with the fourth fitting recess of the upper pusher unit, the first step of the lower pusher unit is engaged with the second engagement portion of the upper pusher unit, and the lower pusher unit is engaged with the lower pusher unit. The second protrusion of the extruded material unit is fitted in the third fitting recess of the upper extruded material unit, and the second step of the lower extruded material unit is the first engaging portion of the upper extruded material unit. Engaged with the upper and lower fins and alternately shifted laterally The opposite side of the main body part formed in multiple stages along the extrusion direction of the extruded material unit is notched on both opposite sides to expose the flow path alternately, and one side along the extrusion direction is used as the fluid inlet. Is a fluid discharge port, and both ends along the extrusion direction are closed.

The heat exchanger according to claim 3 of the present invention is characterized in that, in claim 1 or 2, both ends of the main body portion along the extrusion direction of the extruded material unit are closed with a cover.

According to a fourth aspect of the present invention, there is provided a method of manufacturing a heat exchanger, wherein a block portion is provided on both left and right sides of a horizontal fin formed of a flat plate to form a horizontal I shape, and an upper side of one block portion is formed. The width between the outer surface and the side surface on the fin side is formed wider than the width between the outer surface and the side surface on the fin side on the upper side of the other block portion. Aluminum in which the width between the side surface and the side surface on the fin side is narrower than the width between the outer side surface and the side surface on the fin side on the lower side of the other block part, and the width of the fin upper surface and the bottom surface is equal. An extruded material unit was formed, and this extruded material unit was reversed left and right and alternately stacked in a plurality of layers, and a main body portion in which a plurality of flow paths alternately displaced in the lateral direction were formed in multiple stages between upper and lower fins was configured. After that, close to both ends along the extrusion direction of the extrusion unit of the main body The flow paths are alternately exposed by cutting away both opposite sides of one of the two, and one side along the extrusion direction is used as a fluid inflow port, the other side as a fluid discharge port, and both ends along the extrusion direction are closed. It is characterized by.

According to a fifth aspect of the present invention, there is provided a heat exchanger manufacturing method in which a block portion is provided on both left and right sides of a horizontal fin formed of a flat plate to form a horizontal I shape. A first step projecting from one convex portion and the fin side, and a second step projecting from the second projecting portion and the fin side on the upper surface of the other block portion, almost symmetrically with the upper surface of one block portion The width between the outer side surface of the upper side of one block part and the side surface of the fin side of the first step part is set to the width of the upper side of the other block part and the fin side of the second step part. Forming wider than the width between the side surfaces, forming a first engagement portion by cutting out the third fitting recess and the fin side corner on the bottom surface of one block portion, and on the bottom surface of the other block portion, The second engaging portion is formed by cutting out the fourth fitting recess and the fin-side corner almost symmetrically with the bottom surface of one block portion, The width between the outer side surface on the lower side of the hook portion and the side surface on the fin side of the first engaging portion is the width on the lower side of the other block portion, and the side surface on the fin side of the second engaging portion. Forming an aluminum extruded material unit that is narrower than the width between and the width of the fin upper surface and the bottom surface are equal, and this extruded material unit is reversed left and right and stacked alternately to form a plurality of lower extruded material units. The first convex part of the upper part is fitted into the fourth fitting concave part of the upper pusher unit, and the first step part of the lower pusher unit is engaged with the second engagement part of the upper pusher unit. The second protrusion of the lower extrusion material unit is fitted into the third fitting recess of the upper extrusion material unit, and the second step of the lower extrusion material unit is the second protrusion of the upper extrusion material unit. 1 Engage with the engaging part and move horizontally between the upper and lower fins. After forming the main body part in which the flow path is formed in multiple stages, the opposite side surfaces in the vicinity of both ends along the extrusion direction of the extrusion unit of the main body part are notched to expose the flow path alternately left and right, and in the extrusion direction. One along the line is a fluid inlet, the other is a fluid outlet, and both ends along the extrusion direction are closed.

According to the heat exchanger according to claim 1 of the present invention, the extruded material units are reversed left and right, and are alternately stacked in a plurality of layers, so that a plurality of flow paths shifted in the lateral direction between the upper and lower fins are formed in multiple stages. The opposite main body portion in the vicinity of both ends along the extruding direction of the extruded material unit is notched so that the flow paths are alternately exposed, one along the extruding direction is the fluid inlet and the other is the fluid outlet. In addition, since both ends along the extrusion direction are closed, the extrusion material unit can easily create heat exchangers with various heat exchange amounts by adjusting the length to be cut out and the number of stacked stages.

According to the heat exchanger of the second aspect, in addition to the effect of the first aspect, the first convex portion of the lower extrusion material unit is fitted in the fourth fitting concave portion of the upper extrusion material unit. The first step portion of the lower extrusion material unit is engaged with the second engagement portion of the upper extrusion material unit, and the second protrusion of the lower extrusion material unit is the third fitting of the upper extrusion material unit. Since the second step portion of the lower extrusion material unit is engaged with the first engagement portion of the upper extrusion material unit, the upper and lower extrusion material units are securely fitted, The airtightness can be improved and the strength of the heat exchanger can be improved.

Moreover, according to the heat exchanger of Claim 3, since the both ends along the extrusion direction of an aluminum extrusion material are only obstruct | occluded with a cover, an assembly is easy.

According to the method for manufacturing a heat exchanger according to claim 4, it is possible to easily produce heat exchangers with various heat exchange amounts by adjusting the length of the extruded material unit and the number of stacked stages. In addition, since the inlet and outlet can be formed simply by cutting at least four locations on the side surface of the main body, it is easy to process and can be easily and inexpensively created by simply closing both ends of the main body. it can.

According to the method for manufacturing a heat exchanger according to claim 5, in addition to the effect of claim 4, the first projection of the lower extrusion unit is fitted into the fourth fitting recess of the upper extrusion unit. In addition, the first step portion of the lower extrusion material unit is engaged with the second engagement portion of the upper extrusion material unit, and the second convex portion of the lower extrusion material unit is connected to the upper extrusion material unit. While fitting in the third fitting recess, the second step portion of the lower pusher unit is engaged with the first engagement portion of the upper pusher unit, so that the upper and lower pusher units are securely fitted. In addition, airtightness can be improved and the strength of the heat exchanger can be improved.

Hereinafter, an embodiment of the present invention will be described in detail with reference to FIGS. FIG. 1 shows an extruded material unit 1 made of aluminum. Block parts 3A and 3B are provided on both left and right sides of a horizontal fin 2 formed of an aluminum plate to form a horizontal I-shape. A first step 5 is provided on the upper surface of the portion 3A so as to protrude from the first protrusion 5 and the fin side. A first fitting recess 7 is formed between the first protrusion 5 and the first protrusion 5 at the corner adjacent to the first protrusion 5. Three engaging portions 8 are formed.

Further, a second stepped portion 11 is provided on the upper surface of the other block portion 3B so as to be almost symmetrical with the upper surface of the one block portion 3A, and is protruded from the second projection 10 on the fin side. And a fourth engaging portion 13 is formed at a corner adjacent to the second convex portion 10.

Further, the width D1 between the outer surface on the upper side of one block portion 3A and the side surface on the fin side of the first step portion 6 is set to the width between the outer surface on the upper side of the other block portion 3B and the second step portion 11. It is wider than the width D2 between the side surfaces on the fin side and is formed so that D1> D2.

In addition, the first engaging portion 16 is formed by cutting out the third fitting recess 15 and the fin-side corner on the bottom surface of the one block portion 3A, and the bottom surface of the other block portion 3B is formed on the bottom surface of the one block portion 3A. The second engagement portion 18 is formed by cutting the fourth fitting recess 17 and the fin-side corner almost symmetrically with the bottom surface.

Further, the width D2 between the outer surface on the lower side of one block portion 3A and the side surface on the fin side of the first engaging portion 16 is set to the outer surface on the lower side of the other block portion 3B and the second engaging surface. It is narrower than the width D1 between the side surface of the part 18 on the fin side and is formed so as to satisfy D1> D2. Further, the extruded material unit 1 is formed with the width D3 of the upper surface and the bottom surface of the fin 2 equal. The extruded material unit 1 is molded by an unillustrated extrusion device, and a plurality of the extruded material units 1 are cut into a predetermined length.

As shown in FIGS. 2 and 3, the extruded material unit 1 cut to a predetermined length is horizontally reversed and alternately stacked on a plurality of sheets, and the first convex portion 5 of the lower extruded material unit 1 is placed on the upper While being fitted into the fourth fitting recess 17 on the bottom surface of the extruded material unit 1, the first step portion 6 of the lower extruded material unit 1 is engaged with the second engaging portion 18 of the upper extruded material unit 1. .

The second protrusion 10 of the lower pusher unit 1 is fitted into the third fitting recess 15 of the upper pusher unit 1 and the second step 11 of the lower pusher unit 1 is moved to the upper pusher unit 1. The first engaging portion 16 of the extruded material unit 1 is engaged. Similarly, the extruded material units 1 are reversed left and right and combined in multiple stages, and the multiple flow paths 20A and 20B are alternately displaced in the horizontal direction between the upper and lower fins 2 and 2 as shown in FIG. The main body 21 formed in the above is configured.

Except for the uppermost part of the main body 21 formed in this way, one side near the both ends along the extrusion direction of the extruded material unit 1 is cut at a depth of D2 + 0.5 mm, for example, when the width D1-D2 = 1.5 mm. Then, as shown in FIG. 5, the flow paths 20A are alternately exposed in the side surface direction every other stage. In this way, one along the extrusion direction is the fluid inlet 23A, and the other is the fluid outlet 24A. Next, the main body 21 is reversed, and the opposing position is cut vertically by, for example, a depth of D2 + 0.5 mm to alternately expose the flow path 20B every other stage, and one side along the extrusion direction is fluid. The inlet 23B is used, and the other is the fluid outlet 24B. Next, the flow paths 20A and 20B at both ends along the extrusion direction are closed with a gasket and a cover 25 as shown in FIG. 6 to complete the heat exchanger 26.

As shown in FIG. 7, the heat exchanger 26 assembled in this way alternately has through-flow passages 20A and non-penetration flow passages 20B in portions removed by cutting.

For example, as shown in FIG. 7, when the first fluid 27 is cooled to a low temperature air and supplied from a cooler (not shown) to the inlet 23A of the first fluid 27 by a blower, the first fluid flow along the extrusion direction from here is supplied. The first fluid 27 is discharged from the discharge port 24A through the passage 20A and returned to the air conditioner.

Further, the second fluid 28 is heated to a high temperature air, and the second fluid 28 that has been heated by cooling a device (not shown) is supplied to the inlet 23B by a blower. From this inflow port 23B, it passes through the second fluid flow path 20B along the extrusion direction, is discharged from the discharge port 24B of the second fluid, and is returned to the device to be cooled.

Thus, the first fluid flow path 20A and the second fluid flow path 20B extruded by aluminum are alternately formed via the fins 2, and the first fluid 27 and the second fluid flow path 20B are efficiently formed. It can exchange heat and is made of aluminum, so it has excellent strength and durability. Further, by adjusting the length of the extruded aluminum material 1 and the number of stacked stages, it is possible to easily produce heat exchangers with various heat exchange amounts.

In addition, the inlets 23A and 23B and the outlets 24A and 24B can be formed simply by cutting the four portions of the surface of the main body 21 and the processing is easy. In addition, the gasket and cover are attached to both ends of the aluminum extruded material 1 and assembled. Can be created at low cost.

In the above description, the first projection 5 is provided on the upper surface of the one block 3A and the first step 6 is provided on the fin side, and the first fitting recess 7 is formed therebetween. A third engaging portion 8 is formed at a corner adjacent to the portion 5, and a second step portion 10 is provided on the upper surface of the other block portion 3 </ b> B on the fin side. A fitting recess 12 is formed, a fourth engagement portion 13 is formed at a corner adjacent to the second protrusion 10, and a third fitting recess and a fin-side corner are notched on the bottom surface of one block portion. The first engaging portion is formed and the second engaging portion is formed by cutting out the fourth fitting concave portion and the fin-side corner on the bottom surface of the other block portion. A structure without a fitting recess and an engaging portion may be used. In this case, the upper block portion and the lower block portion may be integrally joined with a screw or an adhesive. Further, the number of convex portions and fitting concave portions is not limited to one, but may be two or more, or may be inclined or bifurcated.

In the above description, the heat exchanger in which the inflow ports 23A and 23B and the discharge ports 24A and 24B are formed on both the left and right sides is shown. Moreover, although shown about the case where four inflow ports 23A and 23B and the discharge ports 24A and 24B were provided, you may provide six or more places. Moreover, although the case where the both ends of the aluminum extrusion material 1 were obstruct | occluded with the gasket 5 and the cover 6 was shown, the structure which obstruct | occluded by stuffing the edge part of the exposed flow paths 20A and 20B may be sufficient.

In the above description, air is used for both the first fluid 27 and the second fluid 28. However, one or both may flow a liquid such as oil or antifreeze. In this case, it is necessary to maintain the water tightness of the overlapping portion of the extruded material unit 1.

It is a perspective view which shows the extrusion material unit by one Embodiment of this invention. It is a front view which shows the state which reversed the extrusion material unit of FIG. It is a perspective view which shows the state which accumulated the upper and lower extrusion material units of FIG. It is a perspective view which shows the state which piled up the extrusion material unit of FIG. 1 in multiple stages, and formed the main-body part. It is a perspective view which shows the state which formed the inflow port and the discharge port in the side surface of the main-body part of FIG. It is a perspective view of a heat exchanger. It is principal part sectional drawing explaining the flow of the fluid in a heat exchanger.

1 Extruded material unit
2 Fin
3A block
3B block
5 1st convex part
6 First stage
7 First fitting recess
8 Third engaging part
10 2nd convex part
11 Second step
12 Second fitting recess
13 Fourth engaging portion
15 Third fitting recess
16 1st engaging part
17 Fourth fitting recess
18 Second engaging portion
20A flow path
20B flow path
21 Body
23A, 23B Inlet
24A, 24B outlet
25 Cover
26 Heat exchanger
27 First fluid
28 Second fluid

Claims (5)

Block portions are provided on both the left and right sides of a horizontal fin formed of a flat plate to form a horizontal I shape, and the width between the outer side surface and the fin side surface on the upper side of one block portion is set to the other side. The upper part of the block part is formed wider than the width between the outer side surface and the side surface on the fin side, and the lower part side of one block part is formed with a width between the outer side surface and the side surface on the fin side. Forming an aluminum extruded material unit that is narrower than the width between the outer side surface and the side surface on the fin side on the lower side of the part, and that has the same width on the upper surface and the bottom surface of the fin. A plurality of alternately stacked layers and a plurality of flow paths that are alternately displaced in the lateral direction between the upper and lower fins are formed in multiple stages, and both opposing surfaces near both ends along the extrusion direction of the extrusion unit are cut out. Alternately expose the flow path and follow the extrusion direction. And with one of the other to the inlet of the fluid and the outlet of the fluid, the heat exchanger, characterized in that closing the ends along the extrusion direction. Block parts are provided on both the left and right sides of a horizontal fin formed of a flat plate to form a horizontal I shape, and on the upper surface of one of the block parts, a first step and a first step part are provided on the fin side. A second step portion is provided on the upper surface of the other block portion so as to be substantially symmetrical with the upper surface of the one block portion, and the second step portion is provided on the fin side, and the outer surface and the first surface on the upper side of the one block portion. The width between the fin side surface of the stepped portion is formed wider than the width between the outer side surface of the upper side of the other block portion and the side surface on the fin side of the second stepped portion. A third engagement recess and a fin-side corner are notched on the bottom surface to form a first engagement portion, and the bottom surface of the other block portion is substantially symmetrical with the bottom surface of one block portion. And the fin-side corner are notched to form the second engaging portion, and the outer surface of the lower side of the one block portion and the first engaging portion are formed. The width between the side surface on the side is formed narrower than the width between the outer side surface on the lower side of the other block portion and the side surface on the fin side of the second engaging portion, and the width between the top surface and the bottom surface of the fin is An equal aluminum extruded material unit is formed, the extruded material units are reversed left and right, and alternately stacked in plural, and the first convex portion of the lower extruded material unit is the fourth fitting concave portion of the upper extruded material unit. And the first protrusion of the lower pusher unit is engaged with the second engagement part of the upper pusher unit, and the second convex part of the lower pusher unit is the upper pusher. While engaging with the third fitting recess of the unit, the second step portion of the lower pusher unit is engaged with the first engagement portion of the upper pusher unit, so that it is alternately placed between the upper and lower fins. Extrusion of the main body formed with multiple stages of flow paths that are displaced in the direction Both sides near the both ends along the extrusion direction of the material unit are notched to expose the flow paths alternately, one along the extrusion direction is the fluid inlet and the other is the fluid outlet, and the extrusion direction A heat exchanger characterized in that both ends thereof are closed. The heat exchanger according to claim 1 or 2, wherein both ends of the main body portion along the extrusion direction of the extruded material unit are closed with a cover. Block portions are provided on both the left and right sides of a horizontal fin formed of a flat plate to form a horizontal I shape, and the width between the outer side surface and the fin side surface on the upper side of one block portion is set to the other side. The upper part of the block part is formed wider than the width between the outer side surface and the side surface on the fin side, and the lower part side of one block part is formed with a width between the outer side surface and the side surface on the fin side. Forming an aluminum extruded material unit that is narrower than the width between the outer side surface and the side surface on the fin side on the lower side of the part, and that has the same width on the upper surface and the bottom surface of the fin. After configuring the main body part in which a plurality of channels alternately stacked in a plurality of layers and alternately shifting in the lateral direction between the upper and lower fins are formed in multiple stages, the vicinity of both ends along the extrusion direction of the extrusion unit of the main body part The opposite flow paths are alternately exposed by notching both sides of the Is not, one along the extrusion direction to the inlet of the fluid, while the other as the outlet of the fluid, a manufacturing method of the heat exchanger, characterized in that for closing the two ends along the extrusion direction. Block parts are provided on both the left and right sides of a horizontal fin formed of a flat plate to form a horizontal I shape, and on the upper surface of one of the block parts, a first step and a first step part are provided on the fin side. A second step portion is provided on the upper surface of the other block portion so as to be substantially symmetrical with the upper surface of the one block portion, and the second step portion is provided on the fin side, and the outer surface and the first surface on the upper side of the one block portion. The width between the fin side surface of the stepped portion is formed wider than the width between the outer side surface of the upper side of the other block portion and the side surface on the fin side of the second stepped portion. A third engagement recess and a fin-side corner are notched on the bottom surface to form a first engagement portion, and the bottom surface of the other block portion is substantially symmetrical with the bottom surface of one block portion. And the fin-side corner are notched to form the second engaging portion, and the outer surface of the lower side of the one block portion and the first engaging portion are formed. The width between the side surface on the side is formed narrower than the width between the outer side surface on the lower side of the other block portion and the side surface on the fin side of the second engaging portion, and the width between the top surface and the bottom surface of the fin is An equal aluminum extruded material unit is formed, the extruded material units are reversed left and right, and alternately stacked in plural, and the first convex portion of the lower extruded material unit is the fourth fitting concave portion of the upper extruded material unit. And the first protrusion of the lower pusher unit is engaged with the second engagement part of the upper pusher unit, and the second convex part of the lower pusher unit is the upper pusher. While engaging with the third fitting recess of the unit, the second step portion of the lower pusher unit is engaged with the first engagement portion of the upper pusher unit, so that it is alternately placed between the upper and lower fins. Consists of a main body that has multiple channels that are displaced in the direction. After that, the opposite sides near both ends along the extrusion direction of the extrusion unit of the main body part are notched to expose the flow paths alternately left and right, one along the extrusion direction is the fluid inlet, and the other is the fluid inlet A method for producing a heat exchanger, characterized in that both ends along the extrusion direction are closed while being a discharge port.