JP2007024440A - Heat exchanger - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heat exchanger which does not generate stress in a bending direction for flat hollow bodies positioned at an end part of a side plate side. <P>SOLUTION: The flat hollow bodies 4A for high temperature fluid distribution for extending in a right and left direction which are provided in parallel with a clearance in a vertical direction, spacers provided between left and right end parts of vertically adjoining flat hollow bodies 4A, a fin provided between adjoining flat hollow bodies 4A between the right and left spacers, a fin arrange space forming member 2 provided vertically outside of the right left end parts of the flat hollow bodies 4A at both the vertical ends, an end part fin 7 provided between the right and left fin arrangement space forming members and brazed on the flat hollow bodies 4A and a side plate 8 provided vertical outside of the fin 7 and brazed on the fin 7. Projecting parts 3 are formed on an inner surface in a right-left direction of the fin arrangement space forming member 2. The right left end parts of the side plate 8 are contacted with the projecting parts 3 of the fin arrangement space forming member 2. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a so-called tankless type heat exchanger that is used as an oil cooler, an aftercooler, a radiator, or the like and does not include a separately formed header tank.

  In this specification, the top and bottom, left and right in FIGS. 1 and 5 are referred to as top and bottom, and left and right, respectively, and the front side of FIG. 1 and FIG. In the following description, the term “aluminum” includes aluminum alloys in addition to pure aluminum.

  As a heat exchanger used as an oil cooler, aftercooler, radiator, etc., a flat hollow body for high-temperature fluid circulation made of aluminum extending in the left-right direction and arranged in parallel at intervals in the vertical direction, and a flat hollow adjacent to the top and bottom An aluminum spacer brazed to a flat hollow body between the left and right ends of the body and an aluminum corrugated fin brazed to the flat hollow body between adjacent flat hollow bodies between the left and right spacers And an aluminum fin arrangement space forming member disposed on the upper and lower sides of the left and right ends of the flat hollow body at both upper and lower ends and brazed to the flat hollow body, and between the left and right fin arrangement space forming members. Aluminum corrugated fins at the top and bottom ends brazed to the flat hollow bodies at both ends, and the corrugated fins at the top and bottom ends. A pair of flat plates made of aluminum brazing sheets brazed to fins on both the upper and lower ends and made of aluminum brazing sheets with a flat hollow body spaced apart in the vertical direction; An aluminum flow path forming body that is disposed between and brazed to both flat plates, and the left and right end portions of the side plate are brazed across the entire width in the front-rear direction of the side plate on the outer surface in the vertical direction of the fin arrangement space forming member. Attached ones are known (see Patent Document 1).

In such a heat exchanger, when a high-temperature fluid flows in the flat hollow body, elongation occurs in the length direction due to thermal expansion. On the other hand, since the transmission of heat to the side plate is slow, the occurrence of elongation due to thermal expansion is delayed. However, the left and right end portions of the side plate are brazed to the outer surface in the vertical direction of the fin arrangement space forming member over the entire width in the front-rear direction of the side plate, so that the extension of the flat hollow body located at the end portion on the side plate side Is strongly restrained by the side plate. Accordingly, a relatively large stress in the bending direction may be generated on the flat plate on the side plate side of both flat plates constituting the flat hollow body, particularly the flat plate forming the flat hollow body.
JP 2004-44951 A

  An object of the present invention is to solve the above-described problems and provide a heat exchanger in which no stress in the bending direction is generated in a flat hollow body located at an end portion on the side plate side.

  In order to achieve the above object, the present invention comprises the following aspects.

  1) Brazed to the flat hollow body placed between the left and right ends of the flat hollow body extending in the left-right direction extending in the left-right direction and arranged in parallel in the vertical direction, and the flat hollow body adjacent to the top and bottom Spacers, fins disposed between adjacent hollow bodies between the left and right spacers and brazed to the flat hollow bodies, and flatly disposed outside the left and right ends of the flat hollow bodies at the upper and lower ends. The fin arrangement space forming member brazed to the hollow body, the end fins arranged between the left and right fin arrangement space forming members and brazed to the flat hollow body, and the upper and lower end fins are arranged outside in the vertical direction. A heat exchanger comprising upper and lower side plates brazed to upper and lower end fins, wherein the side plate and the fin arrangement space forming member are not brazed linearly.

  2) The heat exchange according to 1) above, wherein the flat hollow body is composed of a pair of flat plates arranged at intervals in the vertical direction and a flow path forming body arranged between both flat plates and joined to both flat plates. vessel.

  3) The heat exchanger according to 1) or 2) above, wherein a convex portion protruding inward in the left-right direction is formed at least on the outer end in the vertical direction on the inner surface in the left-right direction of the fin arrangement space forming member.

  4) The heat exchanger according to 3) above, wherein the length of the side plate in the left-right direction is shorter than the distance between the inner surfaces in the left-right direction excluding the convex portions of the fin arrangement space forming members.

  5) The heat exchanger according to 3) or 4), wherein both left and right end portions of the side plate are in contact with the convex portions of the fin arrangement space forming members.

  6) The heat exchanger according to any one of 3) to 5), wherein a plurality of convex portions are formed at intervals in the front-rear direction.

  7) The heat exchanger according to any one of 3) to 6) above, wherein the fin arrangement space forming member is made of an aluminum extruded profile, and the convex portion is integrally formed over the entire height of the fin arrangement space forming member.

  8) The heat according to any one of 3) to 7) above, wherein the tip of the convex portion has a convex arc shape when seen from the plane, and only the tip of the convex portion is brazed to the fin arrangement space forming member. Exchanger.

  9) An industrial machine provided with the heat exchanger according to any one of 1) to 8) as an oil cooler.

  10) An industrial machine provided with the heat exchanger according to any one of 1) to 8) as an aftercooler.

  11) An industrial machine provided with the heat exchanger according to any one of 1) to 8) as a radiator.

  12) A plurality of heat exchanging parts arranged in the vertical direction are provided, and different types of high-temperature fluids flow through the flat hollow bodies constituting each heat exchanging part, and are adjacent to each other in adjacent heat exchanging parts. The heat exchanger according to any one of 1) to 8) above, wherein the flow of the high-temperature fluid between the flat hollow bodies is blocked.

  13) One of the two adjacent heat exchanging parts is one of an oil cooler, an aftercooler and a radiator, and the other is any one of the other of the oil cooler, the aftercooler and the radiator. The heat exchanger as described in 12) above.

  14) An industrial machine provided with the heat exchanger described in 13) above.

  According to the heat exchanger of 1) above, when a high-temperature fluid flows in the flat hollow body, elongation occurs in the length direction due to thermal expansion. On the other hand, since the transmission of heat to the side plate is slow, the occurrence of elongation due to thermal expansion is delayed. However, since the left and right ends of the side plate are not brazed linearly to the fin arrangement space forming member, the extension of the flat hollow body located at the end on the side plate side is prevented from being strongly restrained by the side plate. Is done. Therefore, the stress in the bending direction is prevented from occurring in the flat hollow body located at the end on the side plate side.

  As in the heat exchanger of 2) above, a flat hollow body is a pair of flat plates arranged at intervals in the vertical direction, and a flow path forming body arranged between both flat plates and joined to both flat plates, When it consists of, like the heat exchanger of patent documents 1, when the right-and-left both ends of the side plate are brazed to the up-and-down direction outer surface of the fin arrangement space formation member over the full width in the front-and-rear direction of the side plate, Of the two flat plates that constitute the flat hollow body located at the upper and lower ends, a relatively large stress in the bending direction is generated on the flat plate on the side plate side and may be damaged. ), It is possible to prevent the flat hollow bodies located at the upper and lower ends from being restrained by the side plates. Therefore, it is prevented that the stress of a bending direction generate | occur | produces in the flat plate by the side plate side among the both flat plates which comprise the flat hollow body located in an up-and-down both ends.

  According to the heat exchangers 5) and 6), the side plate can be easily and reliably positioned at the time of manufacturing the heat exchanger.

  According to the heat exchanger of the above 7), the fin arrangement space forming member having the convex portion can be easily manufactured.

  According to the heat exchanger of the above 8), when a high-temperature fluid flows in the flat hollow body and elongation occurs in the length direction due to thermal expansion, and when the occurrence of elongation due to thermal expansion is delayed in the side plate, However, the force which restrains the extension of the flat hollow body by a side plate becomes weak. Moreover, depending on the case, the brazing of the fin arrangement space forming member and the convex portion is broken, and the elongation of the flat hollow body is prevented from being restrained by the side plate.

  Embodiments of the present invention will be described below with reference to the drawings. In addition, the same code | symbol is attached | subjected to the same part and the same thing through all drawings, and the overlapping description is abbreviate | omitted.

  FIG. 1 shows the overall configuration of a first embodiment of a heat exchanger according to the present invention, and FIGS.

  In FIG. 1, a heat exchanger (1) is used as an oil cooler of an industrial machine, for example, a load compressor, and is a high temperature oil made of aluminum that is arranged in parallel in the vertical direction and extends in the horizontal direction. An aluminum bare spacer (5) brazed to the flat hollow body (4A) disposed between the left and right ends of the flat hollow body (4A) and the flat hollow body (4A) adjacent to each other vertically, And an aluminum corrugated fin (7) disposed in the ventilation gap (6) between adjacent flat hollow bodies (4A) and brazed to the flat hollow bodies (4A).

  In the heat exchanger (1), a solid block-shaped aluminum bear fin arrangement space is formed on the upper surfaces of both left and right ends of the flat hollow body (4A) at the upper end and the lower surfaces of both left and right ends of the flat hollow body (4A) at the lower end. The member (2) is arranged and brazed to the flat hollow body (4A). Aluminum corrugated fins (7) are arranged between the left and right fin arrangement space forming members (2) on the upper side of the upper flat hollow body (4A) and the lower side of the lower flat hollow body (4A). It is brazed to the body (4A). Side plates (8) made of an aluminum brazing sheet having a brazing material layer on both sides are disposed on the upper and lower sides of the corrugated fins (7) at the upper and lower ends, and are brazed to the corrugated fins (7). A ventilation gap (6) is also formed between the flat hollow bodies (4A) at the upper and lower ends and the side plates (8).

  As shown in FIG. 2, the fin arrangement space forming member (2) is made of an aluminum extruded shape, and extends in the vertical direction on both the front and rear side edges and the front and rear direction center on the inner surface in the left and right direction. The convex portion (3) extending over the entire height of the fin arrangement space forming member (2) is integrally formed. The tip surface (tip portion) of the convex portion (3) has a convex arc shape when viewed from the plane. The length of the side plate (8) is shorter than the distance between the inner surfaces in the left and right direction excluding the convex portions (3) in the left and right fin arrangement space forming members (2), and the left and right ends of the side plate (8). The part is in contact with the convex part (3). The left and right end portions of the side plate (8) are formed at the tip of the convex portion (3), that is, a convex arc shape by the molten brazing material melted from the side plate (8) during the manufacture of the heat exchanger (1) described later. The protruding end of the front end surface may be brazed or may not be brazed.

  As shown in FIG. 3, the flat hollow body (4A) includes two rectangular flat plates (11) made of an aluminum brazing sheet having a brazing filler metal layer on both sides and spaced in the vertical direction. It comprises an aluminum bare material flow path forming body (12) disposed between the flat plates (11) and brazed to both flat plates (11). Through holes (13) are formed in the left and right ends of both flat plates (11). The flow path forming body (12) includes a peripheral wall (14) straddling between the peripheral portions of both flat plates (11), and two front and rear side wall portions located on the front and rear side edges of both flat plates (11) in the peripheral wall (14) ( 14a) includes a heat transfer area expanding portion (15) provided so as to integrally connect intermediate portions in the length direction. The upper and lower flat plates (11) are the upper and lower walls (4a) of the flat hollow body (4A), and the front and rear side wall portions (14a) of the flow path forming body (12) are side walls straddling the front and rear side edges of the upper and lower walls (4a) ( 4b). The heat transfer area expanding portion (15) is a corrugated band plate portion in which an upward protruding bent portion (16a) and a downward protruding bent portion (16b) are alternately provided in the left-right direction via a horizontal portion (16c) ( 16) are formed by being arranged in the front-rear direction and integrally connected to each other at the horizontal portion (16c). Further, in the heat transfer area enlarged portion (15), the upper protruding bent portion (16a) and the lower protruding bent portion (16b) of the corrugated strip portion (16) adjacent in the front-rear direction are formed shifted in the left-right direction. Has been. Here, the horizontal portion between the upper protruding bent portion (16a) and the lower protruding bent portion (16b) adjacent to each other in the left-right direction in each of the corrugated strip portions (16) of the heat transfer area expanding portion (15) (16c) exists, and the corrugated strips (16) adjacent in the front-rear direction are integrally connected to each other at the horizontal portion (16c), but the horizontal portion (16c) is not necessarily required. In this case, the portions of the adjacent corrugated strip portions (16) that switch from the upper protruding bent portion (16a) to the lower protruding bent portion (16b) intersect with each other, and are thus integrally connected to each other.

As shown in FIG. 4, the flow path forming body (12) is integrally formed between a pair of linear side bars (17) and an intermediate portion between the heights of both side bars (17). 17) An aluminum extruded section consisting of a flat plate portion (18) extending over the entire length of the flat plate portion (18) is manufactured (see FIG. 4 (a)), and then both end portions of the flat plate portion (18) are cut to a predetermined length (see FIG. 4). 4 (b)), and then pressing the flat plate portion (18) to form the heat transfer area enlarged portion (15) (see FIG. 4 (c)), and then both ends of both side bars (17). It is formed by bending the part inward and butting the tips together (see FIG. 4 (d)) and brazing. Note that the brazing between the ends of both side bars (17) is performed by a molten brazing material that has melted from the flat plate (11) during the manufacture of the heat exchanger (1) described later.The spacer (5) is made of aluminum. As shown in FIG. 3, the vertical through hole (19) leading to the through hole (13) of the upper and lower walls (4a) of the flat hollow body (4A) matches the through hole (13). It is formed as follows. In addition, a convex part (20) extending in the vertical direction and extending over the entire height of the spacer (5) is integrally formed on both the front and rear side edges of the inner surface in the left and right direction of the spacer (5) and the central part in the front and rear direction. The left and right end portions of the corrugated fin (7) are in contact with the convex portion (20). The tip surface of the convex portion (20) has a convex circular arc shape in cross section. Further, the left side surface of the spacer (5) disposed between the left end of the flat hollow body (4A) at the upper end and the flat hollow body (4A) adjacent to the lower side thereof leads to the inside of the vertical through hole (19). The aluminum oil inlet pipe (21) is connected by brazing, and the spacer (5) disposed between the right end of the flat hollow body (4A) at the lower end and the flat hollow body (4A) adjacent to the upper end thereof. An aluminum oil outlet pipe (22) is connected to the right side surface by brazing so as to communicate with the inside of the vertical through hole (19) (see FIG. 1).

  The heat exchanger (1) includes an aluminum brazing sheet flat plate (11), a flow path forming body (12), a spacer (5), a corrugated fin (7), a fin arrangement space forming member (2), The two side plates (8) made of aluminum brazing sheet are overlapped in a predetermined order, and the oil inlet pipe (21) and the outlet pipe (22) are combined and temporarily fixed by appropriate means. Manufactured by brazing.

  In the heat exchanger (1) described above, when high-temperature oil flows in the flat hollow body (4A), elongation occurs in the length direction due to thermal expansion. On the other hand, since the heat transfer to the upper and lower side plates (8) is slow, the occurrence of elongation due to thermal expansion is delayed. However, the left and right ends of the side plate (8) are only brazed to the tips of the convex portions (3) of the fin arrangement space forming member (2), or the convex portions (3 of the fin arrangement space forming member (2) (3). ), The elongation of the flat hollow body (4A) positioned at the upper and lower ends is prevented from being strongly restrained by the side plate (8). Therefore, it is possible to prevent stress in the bending direction from being generated in the flat hollow bodies (4A) located at both the upper and lower ends. In particular, a relatively large stress in the bending direction does not occur on the flat plate (11) on the side plate (8) side of the flat plates (11) constituting the flat hollow body (4A) at both the upper and lower ends. Damage to the flat plate (11) is prevented.

  In the first embodiment, the heat exchanger (1) according to the present invention is used as an oil cooler of a load compressor. However, the heat exchanger (1) is not limited to this, and the aftercooler and oil cooler of various compressors described above. And it may be applied as a single unit such as a radiator. Furthermore, the heat exchanger (1) according to the present invention is used as an oil cooler for cooling oil used in other industrial machines, for example, hydraulic equipment such as a crane alone, a deck crane, a crane truck, a shovel car, or a machine tool. .

  5 to 7 show a second embodiment of the heat exchanger according to the present invention.

  FIG. 5 shows the overall configuration of a second embodiment of the heat exchanger according to the present invention, and FIGS. 6 and 7 show the configuration of the main part thereof.

  In FIG. 5, a heat exchanger (30) is used for a load compressor, and an oil cooler (31) and an aftercooler (32) for cooling the compressed air are arranged on the same vertical surface so that the former comes downward. It is provided inside.

  The oil cooler (31) has substantially the same configuration as the heat exchanger (1) of the first embodiment, and the differences are as follows. That is, the fin arrangement space forming member (2) and the side plate (8) are not arranged above the flat hollow body (4A) at the upper end of the oil cooler (31), and the flat hollow body (4A) at the upper end. Spacers (5) are also disposed on the left and right ends of the flat plate and are brazed to the flat hollow body (4A). And the shape and size seen from the plane are the same as the flat hollow body (4A), and the lower surfaces of the left and right ends of the intermediate plate (33) made of an aluminum brazing sheet having a brazing material layer on both sides are spacers (5) By brazing to the upper surface, the vertical through hole (19) of the spacer (5) is closed. In addition, a ventilation gap (6) is formed between the flat hollow body (4A) at the upper end and the intermediate plate (33), and an aluminum corrugated fin (7) is also arranged in the ventilation gap (6). The hollow body (4A) and the intermediate plate (33) are brazed. Further, an aluminum oil inlet pipe (21) is connected to the front side surface of the spacer (5) arranged on the left end of the flat hollow body (4A) at the upper end so as to communicate with the inside of the vertical through hole (19). The vertical through-hole (19) is connected to the front side surface of the spacer (5) disposed between the right end of the flat hollow body (4A) at the lower end and the flat hollow body (4A) adjacent to the upper end thereof. The oil outlet pipe (22) made of aluminum is connected by brazing so as to lead to. Other configurations of the oil cooler are the same as those of the heat exchanger (1) of the first embodiment.

  The aftercooler (32) has substantially the same configuration as the oil cooler (31), and is a flat hollow body (4B) for high-temperature compressed air circulation made of aluminum extending in the left-right direction and arranged in parallel in the vertical direction. And an aluminum spacer (5) disposed between the left and right ends of the flat hollow body (4B) adjacent to each other and brazed to the flat hollow body (4B), and adjacent to each other between the left and right spacers (5). An aluminum corrugated fin (7) disposed in the ventilation gap (6) between the flat hollow bodies (4B) and brazed to the flat hollow bodies (4B) is provided. The number of flat hollow bodies (4B) is smaller than that of the flat hollow bodies (4A) of the oil cooler (31).

  Fin arrangement space forming members (2) are respectively disposed on the upper surfaces of the left and right ends of the flat hollow body (4B) at the upper end of the aftercooler (32) and brazed to the flat hollow body (4B). On the upper side of the flat hollow body (4B) at the upper end, an aluminum corrugated fin (7) is also disposed between the left and right fin arrangement space forming members (2) and brazed to the flat hollow body (4B). A side plate (8) is disposed above the corrugated fin (7) at the upper end, and is brazed to the corrugated fin (7). A ventilation gap (6) is also formed between the flat hollow body (4B) at the upper end and the side plate (8). As in the case of the first embodiment, the length of the side plate (8) is shorter than the distance between the inner surfaces in the left and right direction excluding the convex portions (3) in the left and right fin arrangement space forming members (2). The left and right ends of the side plate (8) are in contact with the convex portion (3). The left and right end portions of the side plate (8) are formed at the tip of the convex portion (3), that is, a convex arc shape by the molten brazing material melted from the side plate (8) during the manufacture of the heat exchanger (1) described later. The protruding end of the front end surface may be brazed or may not be brazed.

  The flat hollow body (4B) at the lower end of the aftercooler (32) is arranged above the intermediate plate (33) with a space between the left and right ends of the flat hollow body (4B) and the intermediate plate (33). Also, a spacer (5) is arranged and brazed to the flat hollow body (4B) and the intermediate plate (33). In addition, a ventilation gap (6) is formed between the flat hollow body (4B) at the lower end and the intermediate plate (33), and an aluminum corrugated fin (7) is also arranged in the ventilation gap (6). The hollow body (4B) and the intermediate plate (33) are brazed. The vertical through hole (19) is formed on the front side surface of the spacer (5) disposed between the flat hollow body (4B) at the upper end of the aftercooler (32) and the left end portion of the flat hollow body (4B) adjacent to the lower end thereof. An aluminum compressed air inlet pipe (34) is connected by brazing so as to communicate with the inside, and in front of the spacer (5) disposed between the flat hollow body (4B) at the lower end and the right end of the intermediate plate (33). An aluminum compressed air outlet pipe (35) is connected to the side surface by brazing so as to communicate with the inside of the vertical through hole (19).

  Another difference between the aftercooler (32) and the oil cooler (31) is a flow path forming body constituting the flat hollow body (4B).

  As shown in FIG. 6, the flow path forming body (36) disposed between both flat plates (11) and brazed to both flat plates (11) has a peripheral wall (37) straddling between the peripheral portions of both flat plates (11). ), And the heat transfer area provided so as to integrally connect the lengthwise intermediate portions of the two front and rear side wall portions (37a) located at the front and rear side edges of both flat plates (11) in the peripheral wall (37) It consists of an enlarged part (38). The upper and lower flat plates (11) are the upper and lower walls (4a) of the flat hollow body (4B), and the front and rear side wall portions (37a) of the peripheral wall (37) of the flow path forming body (36) are the side walls straddling the upper and lower walls (4a). (4b). The heat transfer area enlarging portion (38) is composed of a plurality of cross-sectionally substantially rhombic tubular portions (38a) that are integrally formed side by side in the left-right direction.

  As shown in FIG. 7, the flow path forming body (36) is integrally formed between a pair of linear side bars (39) and both side bars (39) and is transmitted over the entire length of the side bars (39). An aluminum extruded section made of a heat area expansion portion (38) is manufactured (see FIG. 7 (a)), and then both end portions of the heat transfer area expansion portion (38) are cut out over a predetermined length (FIG. 7 ( b)), and then both end portions of both side bars (39) are bent inward so that the tips meet each other (see FIG. 7 (c)) and are brazed. Note that the ends of the side bars (39) are brazed to each other with a molten brazing material that has melted from the flat plate (11) during the manufacture of the heat exchanger (30) described later.

  The heat exchanger (30) includes an aluminum brazing sheet flat plate (11), a flow path forming body (12) (36), a spacer (5), an aluminum brazing sheet intermediate plate (33), a corrugated fin ( 7), the fin arrangement space forming member (2), and the upper and lower side plates (8) made of aluminum brazing sheet are overlapped in a predetermined order, and the oil inlet pipe (21) and the outlet pipe (22), The compressed air inlet pipe (34) and the outlet pipe (35) are combined, temporarily fixed by appropriate means, and brazed together.

  In the heat exchanger (30) described above, hot oil flows in the flat hollow body (4A) of the oil cooler (31), and hot compressed air flows in the flat hollow body (4B) of the aftercooler (32). When flowing, elongation occurs in the length direction due to thermal expansion. On the other hand, since the heat transfer to the upper and lower side plates (8) is slow, the occurrence of elongation due to thermal expansion is delayed. However, the left and right ends of the side plate (8) are only brazed to the tips of the convex portions (3) of the fin arrangement space forming member (2), or the convex portions (3 of the fin arrangement space forming member (2) (3). ), The elongation of the flat hollow bodies (4B) and (4A) located at the upper and lower ends is prevented from being strongly restrained by the side plate (8). Therefore, it is possible to prevent the stress in the bending direction from being generated in the flat hollow bodies (4B) (4A) located at both the upper and lower ends. In particular, a relatively large stress in the bending direction is generated on the flat plate (11) on the side plate (8) side among the flat plates (11) constituting the flat hollow bodies (4B) (4A) at both upper and lower ends. Therefore, the flat plate (11) is prevented from being damaged.

  In the second embodiment, the heat exchanger (30) according to the present invention is used in a load compressor, and includes an oil cooler (31) for cooling high temperature oil and an after cooler (32) for cooling high temperature compressed air. However, the present invention is not limited to this, and two or three of aftercoolers, oil coolers, and radiators in industrial machines such as road compressors, gas turbine compressors, and railway vehicle compressors. A heat exchange part may be integrated.

1 is a perspective view showing the overall configuration of a first embodiment of a heat exchanger according to the present invention. It is a principal part enlarged view of FIG. It is a disassembled perspective view which shows a part of heat exchanger of FIG. It is a disassembled perspective view which shows the manufacturing method of the flow-path formation body in the flat hollow body of the heat exchanger of FIG. It is a perspective view which shows the whole structure of 2nd Embodiment of the heat exchanger by this invention. It is a disassembled perspective view which shows a part of aftercooler of the heat exchanger of FIG. It is a disassembled perspective view which shows the manufacturing method of the flow-path formation body of the flat hollow body of the aftercooler in the heat exchanger of FIG.

Explanation of symbols

(1) (30): Heat exchanger
(2): Fin arrangement space forming member
(3): Convex part
(4A) (4B): Flat hollow body
(5): Spacer
(7): Corrugated fin
(8): Side plate
(11): Flat plate
(12) (36): Channel formation body
(31): Oil cooler
(32): Aftercooler

Claims (14)

A flat hollow body for high-temperature fluid circulation extending in the left-right direction and arranged in parallel with a space in the vertical direction and between the left and right ends of the flat hollow bodies adjacent in the vertical direction and brazed to the flat hollow body Spacers, fins disposed between adjacent flat hollow bodies between the left and right spacers and brazed to the flat hollow bodies, and flat hollow bodies disposed on the upper and lower ends of the left and right ends of the flat hollow bodies at both upper and lower ends A fin arrangement space forming member brazed, an end fin arranged between the left and right fin arrangement space forming members and brazed to a flat hollow body, and an upper and lower end fin arranged on the outer side in the vertical direction. A heat exchanger comprising upper and lower side plates brazed to both end fins, wherein the side plate and the fin arrangement space forming member are not brazed linearly. The heat exchanger according to claim 1, wherein the flat hollow body is composed of a pair of flat plates arranged at intervals in the vertical direction and a flow path forming body arranged between the flat plates and joined to the flat plates. The heat exchanger according to claim 1 or 2, wherein a convex portion projecting inward in the left-right direction is formed at least at an outer end portion in the vertical direction on the inner surface in the left-right direction of the fin arrangement space forming member. The heat exchanger according to claim 3, wherein the length of the side plate in the left-right direction is shorter than the distance between the inner surfaces in the left-right direction excluding the convex portions in both fin arrangement space forming members. The heat exchanger according to claim 3 or 4, wherein left and right end portions of the side plate are in contact with convex portions of both fin arrangement space forming members. The heat exchanger according to any one of claims 3 to 5, wherein a plurality of convex portions are formed at intervals in the front-rear direction. The heat exchanger according to any one of claims 3 to 6, wherein the fin arrangement space forming member is made of an aluminum extruded profile, and the convex portion is integrally formed over the entire height of the fin arrangement space forming member. The heat exchanger according to any one of claims 3 to 7, wherein a tip end portion of the convex portion has a convex arc shape when viewed from above, and only the tip end of the convex portion is brazed to the fin arrangement space forming member. The industrial machine provided with the heat exchanger in any one of Claims 1-8 as an oil cooler. The industrial machine provided with the heat exchanger in any one of Claims 1-8 as an aftercooler. The industrial machine provided with the heat exchanger in any one of Claims 1-8 as a radiator. A plurality of heat exchanging parts arranged in the vertical direction are provided, and different types of high-temperature fluids flow in the flat hollow bodies constituting the heat exchanging parts. The heat exchanger according to any one of claims 1 to 8, wherein a flow of a high-temperature fluid between the hollow bodies is blocked. One of the two adjacent heat exchanging portions is one of an oil cooler, an aftercooler, and a radiator, and the other is any one of the oil cooler, the aftercooler, and the radiator. The heat exchanger according to claim 12. An industrial machine comprising the heat exchanger according to claim 13.

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