JP7223991B2 - Heat exchanger - Google Patents

Description

The present invention relates to heat exchangers.

Conventionally, as this type of technology, a heat exchanger has been proposed that includes a plurality of heat exchange tubes arranged so that their flat surfaces are parallel, and a plurality of corrugated fins attached between the heat exchange tubes. (See, for example, Patent Document 1). In this heat exchanger, the corrugated fins are attached such that the longitudinal direction of the attachment portion to the heat exchange tube is along the air flow.

JP 2018-179339 A

In the above-described heat exchanger, it is difficult to discharge condensed water that may be generated by heat exchange, and this may reduce heat exchange efficiency. When the heat exchanger is used so that the longitudinal direction of the heat exchange tubes is vertical, the longitudinal direction of the corrugated fin mounting portion is horizontal. It is difficult to push out and may stay. If the dew condensation water stays, the ventilation area and the heat transfer area will be reduced accordingly, and the heat exchange efficiency will be lowered.

A main object of the heat exchanger of the present invention is to improve the discharge performance of condensed water in the heat exchanger.

The heat exchanger of the present invention employs the following means in order to achieve the above main object.

The heat exchanger of the present invention is
A plurality of heat exchange tubes having flow paths for flowing a first heat exchange medium and arranged so that their flat surfaces are parallel; and a plurality of corrugated fins attached between each of the plurality of heat exchange tubes. and a second heat exchange medium flowing in a predetermined direction between adjacent heat exchange tubes to exchange heat between the first heat exchange medium and the second heat exchange medium, wherein ,
The plurality of corrugated fins are attached such that the longitudinal direction of the attachment portion to the heat exchange tube is substantially orthogonal to the predetermined direction,
Each fin portion of the plurality of corrugated fins is formed with a plurality of wing portions forming a plurality of windows,
It is characterized by

In the heat exchanger of the present invention, a plurality of heat exchange tubes having flow paths for flowing a first heat exchange medium and arranged so that flat surfaces thereof are parallel; and a plurality of corrugated fins attached to the heat exchange tube, wherein the second heat exchange medium flows in a predetermined direction between the adjacent heat exchange tubes to perform heat exchange between the first heat exchange medium and the second heat exchange medium. . In the heat exchanger of the present invention, the plurality of corrugated fins are attached such that the longitudinal direction of the attachment portion to the heat exchange tube is substantially perpendicular to the predetermined direction. That is, the heat exchange tube is attached so that the longitudinal direction of the portion where the heat exchange tube is attached coincides with the longitudinal direction of the heat exchange tube. Then, a plurality of wing portions are formed so as to form a plurality of windows on each fin portion of the plurality of corrugated fins. Since each window serves as a through hole penetrating through the fins, the second heat exchange medium flows through each window even if the fins of the corrugated fins are attached so as to block the flow of the second heat exchange medium. Each wing part serves as a heat transfer part that transfers heat from the heat exchange tubes and contributes to heat exchange. When the heat exchanger of the present invention is used so that the longitudinal direction of the mounting portions of the corrugated fins (the longitudinal direction of the heat exchange tubes) is vertical, the first heat exchange medium and the second heat exchange medium Condensed water generated on the corrugated fins due to heat exchange with the corrugated fins flows downward along the mounting portion and is discharged. can be In addition, "the direction in which the longitudinal direction of the mounting portion is substantially orthogonal to the predetermined direction" means the direction in which the mounting portion is substantially perpendicular when the mounting portion is formed linearly in the longitudinal direction. , when the mounting portion is bent in a wavy shape or in a zigzag shape, it means a direction in which the longitudinal direction thereof is substantially orthogonal. The term "substantially orthogonal" includes not only the case of being completely orthogonal, but also the case of being orthogonal within a certain range.

In such a heat exchanger of the present invention, the plurality of blade portions may be formed so as to form an angle within a range of 45 degrees centered on 0 degrees with respect to the predetermined direction. If the plurality of wing portions are set at 0 degrees with respect to the predetermined direction, the flow resistance of the second heat exchange medium can be reduced. If the plurality of blades have an angle (within 45 degrees) with respect to a predetermined direction, the flow resistance is increased, but the plurality of blades slightly disturbs the flow of the second heat exchange medium. can be generated, which can improve the heat exchange efficiency.

In the heat exchanger of the present invention, the plurality of wing portions may be formed so as to be parallel to a line perpendicular to the flat surface of the heat exchange tube. That is, the plurality of blades are formed so as to span the adjacent heat exchange tubes. By doing so, it is possible to improve heat conduction from the heat exchange tube to the plurality of blade portions.

In the heat exchanger of the present invention, the plurality of wing portions may be formed at a predetermined angle within a range of 60 degrees with respect to a line perpendicular to the flat surface of the heat exchange tube. That is, the plurality of wing portions are formed within a range of 60 degrees from the direction across the adjacent heat exchange tubes. When the heat exchanger of this aspect of the present invention is used so that the longitudinal direction of the mounting portion of the corrugated fin (longitudinal direction of the fin portion: longitudinal direction of the heat exchange tube) is vertical, the corrugated fin Condensed water that may occur flows along a plurality of wing portions at a predetermined angle to the mounting portion, flows down along the mounting portion, and is discharged to the outside. As a result, compared to the general corrugated fin type heat exchanger described in the background art, the discharge of condensed water can be improved.

In the heat exchanger of the present invention, the plurality of blade portions may be formed in a V-shape with an obtuse angle bent portion. That is, a plurality of wings are formed in a triangular roof shape. The heat exchanger of this aspect of the present invention is arranged such that the longitudinal direction of the mounting portion of the corrugated fin (longitudinal direction of the fin portion: longitudinal direction of the heat exchange tube) is the vertical direction, and the V-shaped bent portion (triangular When used with the top of the roof facing upwards, the condensed water that may form on the corrugated fins flows along the multiple wing portions at a predetermined angle to the mounting portions on both sides, and then flows down along the mounting portions. It is discharged outside. As a result, compared to the general corrugated fin type heat exchanger described in the background art, the discharge of condensed water can be improved.

In the heat exchanger of the present invention, the plurality of blade portions are formed so as to be shifted by half a pitch with respect to the plurality of blade portions formed on the adjacent fin portions and the flow of the second heat exchange medium. good too. In this way, compared to the case where the plurality of blades are formed at the same pitch as the plurality of blades of the adjacent fins, the plurality of blades are arranged in a wider range, and the airflow passing through the blades is reduced. The temperature distribution of the downstream second heat exchange medium can be made more uniform, and the heat exchange efficiency can be improved. In this case, the plurality of wings may be formed so that the pitch of the width is larger than the pitch of the fins. That is, the pitch of the fins (the width of the mounting portion) is made smaller than the width of the plurality of blades. By doing so, the number of folds (the number of attachment portions) per unit width of the corrugated fin can be increased, and a heat exchanger with a large heat transfer area that contributes to heat exchange efficiency can be obtained.

In the heat exchanger of the present invention, the mounting portions of the plurality of corrugated fins may be formed to have a shape in which a plurality of obtuse V-shaped bent portions are connected in the longitudinal direction. That is, the mounting portion is formed so as to meander in the longitudinal direction. With this arrangement, when the plurality of blades are formed at a predetermined angle with respect to the flow of the second heat exchange medium, the angle of the plurality of blades with respect to the fins can be made smaller than the predetermined angle.

In the heat exchanger of the present invention, the plurality of blades are rotated by a predetermined rotation angle about the direction of the slits between the plurality of slits formed in the direction across the adjacent heat exchange tubes. It may be formed as By doing so, it is possible to form a plurality of wings and a plurality of windows simply by pressing.

It is an explanatory view showing an outline of composition of heat exchanger 20 as one embodiment of the present invention. FIG. 2 is a cross-sectional view taken along the line AA of FIG. 1; FIG. 2 is an explanatory view showing a cross section taken along the line BB of FIG. 1 and a part thereof in an enlarged manner; FIG. 2 is an explanatory view showing a cross section taken along line CC of FIG. 1 and a part thereof in an enlarged manner; FIG. 2 is an explanatory view showing a cross section taken along line DD of FIG. 1 and a part thereof in an enlarged manner; FIG. 2 is an explanatory diagram showing a cross section taken along the line EE of FIG. 1 and a part thereof in an enlarged manner; 6 is a partial external view showing the external appearance of part of an example of corrugated fins 60. FIG. . FIG. 7 is an explanatory diagram showing an example of how a plurality of wing portions 66 are formed on the fin portion 64; FIG. 2 is an explanatory view showing a cross section corresponding to the CC cross section in FIG. 1 and a part thereof in an enlarged manner in a heat exchanger 120 of a modified example; FIG. 3 is an explanatory view showing a cross section corresponding to the cross section CC of FIG. 1 and a part thereof in an enlarged manner in a heat exchanger 120B of a modified example; FIG. 3 is an explanatory view showing a cross section corresponding to the CC cross section of FIG. 1 and a part thereof in an enlarged manner in a heat exchanger 220 of a modified example; FIG. 3 is an explanatory view showing a section corresponding to the section BB in FIG. 1 and a part thereof in an enlarged manner in a heat exchanger 320 of a modified example; FIG. 11 is an explanatory diagram showing the outline of the configuration of a heat exchanger 420 of a modified example; FIG. 4 is an explanatory view showing a cross section corresponding to the CC cross section in FIG. 1 and a part thereof in an enlarged manner in a heat exchanger 420 of a modified example; FIG. 5 is an explanatory diagram showing the outline of the configuration of a heat exchanger 520 of a modified example; FIG. 11 is an explanatory diagram showing the outline of the configuration of a heat exchanger 620 of a modified example; FIG. 3 is an explanatory view showing a cross section corresponding to the DD cross section of FIG. 1 and a part thereof in an enlarged manner in a heat exchanger 720 of a modified example;

Next, the form for implementing this invention is demonstrated. FIG. 1 is an explanatory diagram showing a schematic configuration of a heat exchanger 20 as one embodiment of the present invention. 2 is a cross-sectional view of the AA cross section of FIG. 1, FIG. 3 is a cross section of the BB cross section of FIG. FIG. 5 is an explanatory view showing a cross section of the C section and a part thereof in an enlarged manner, FIG. 5 is an explanatory view showing a cross section of the DD section in FIG. FIG. 2 is an explanatory view showing a cross section taken along line EE and a part thereof in an enlarged manner;

The heat exchanger 20 of the embodiment includes an inflow member 30 into which a first heat exchange medium such as water or oil flows, a discharge member 40 that discharges the first heat exchange medium, and the first heat exchange from the inflow member 30. A plurality of heat exchange tubes 50 for exchanging heat with a medium and discharging it to the discharge member 40, and a plurality of corrugated fins 60 attached between each of the plurality of heat exchange tubes 50. Heat exchange between the first heat exchange medium and the second heat exchange medium is performed by flowing the second heat exchange medium such as air between the tubes 50 in a direction penetrating the plane of FIG. For ease of explanation, the following explanation assumes that air is used as the second heat exchange medium.

The inflow member 30 is formed as a box-shaped member from a metal material such as aluminum, copper, or stainless steel, and as shown in FIGS. , the first heat exchange medium is supplied to the plurality of heat exchange tubes 50 from the plurality of through holes 36 formed in the manifold 34 .

The discharge member 40 is made of the same material as the inflow member 30 and is formed as a similar box-shaped member. It is received from the through hole 46 and discharged from the discharge port 42 .

As shown in FIGS. 1, 2, 5 and 6, the plurality of heat exchange tubes 50 are composed of a plurality of flow paths 52 (in FIGS. 2, 5 and 6, 4 channels), which are arranged so that the flat surfaces are parallel and alternate with the corrugated fins 60 . As shown in FIG. 2 , the plurality of flow paths 52 of the heat exchange tube 50 communicate with the plurality of through holes 36 of the inflow member 30 and the plurality of through holes 46 of the discharge member 40 . The first heat exchange medium flowing from the plurality of through holes 36 flows down and is discharged to the plurality of through holes 46 of the discharge member 40 .

The plurality of corrugated fins 60 are formed in a wavy shape (serpentine shape, bellows shape) from a metal material such as aluminum, copper, or stainless steel. An appearance of part of an example of the corrugated fin 60 is shown in FIG. The corrugated fin 60 is composed of a plurality of mounting portions 62 forming the crests and bottoms of the waves and a plurality of fin portions 64 between the crests and bottoms, as shown in FIGS. , the longitudinal direction of the mounting portion 62 (longitudinal direction of the fin portion 64, depth direction in FIG. 7) is orthogonal to the direction of circulation of the second heat exchange medium (air) (longitudinal direction of the heat exchange tube 50, FIG. 1 The mounting portions 62 at the top and bottom are connected to the flat surfaces of the adjacent heat exchange tubes 50 so that the top and bottom mounting portions 62 are attached to each other. A plurality of wings 66 for forming a plurality of windows 68 are formed in the plurality of fins 64 . FIG. 8 shows an example of how a plurality of wing portions 66 are formed on the fin portion 64 . A plurality of slits 65 are formed in the direction across the heat exchange tube 50 adjacent to the fin portion 64 where nothing is formed (the direction across the top mounting portion 62 and the bottom mounting portion 62), and each slit A plurality of wing portions 66 are formed by rotating the space (portion to become each wing portion 66) around its center (broken line in FIG. 8) as a rotation axis. window 68 is formed. The actual formation can be performed by forming a plurality of slits 65 and pressing using a mold that pushes the left side of the broken line from the back side of the paper to the front side of the paper and a mold that pushes the right side of the broken line from the front side of the paper to the back side of the paper. can. The corrugated fin 60 used in the embodiment shown in FIG. 7 is formed so that the angles of the plurality of wing portions 66 with respect to the fin portion 64 are about 90 degrees. When formed in this manner, the plurality of wings 66 are substantially rectangular plate-like members formed so as to be parallel to the perpendicular line from the flat surface of the heat exchange tube 50 . At the upper and lower portions of each wing portion 66, four elongated portions 67 are formed by stretching the material during press working.

In the heat exchanger 20 of the embodiment, the first heat exchange medium (water, oil, etc.) flows from the plurality of through holes 36 of the inflow member 30 into the plurality of flow paths 52 of the plurality of heat exchange tubes 50, It flows through the plurality of channels 52 and is discharged to the plurality of through holes 46 of the discharge member 40 . On the other hand, the second heat exchange medium (such as air) flows from the front side or the back side of the paper surface of FIG. It flows through a plurality of windows 68 formed in the fin portion 64 of the corrugated fin 50 and flows out to the opposite side of the paper. The heat (including cold heat) of the first heat exchange medium is transferred from the walls of the plurality of heat exchange tubes 50 through the attachment portions 62 of the plurality of corrugated fins 60 to the frame portions of the plurality of window portions 68 and the plurality of blade portions 66 . , and is transmitted to the second heat exchange medium that contacts the mounting portion 62, the frame portions of the plurality of window portions 64, and the plurality of wing portions 66 and flows through the plurality of window portions 68, and as a result, the first Heat exchange is performed between the heat exchange medium and the second heat exchange medium.

In the heat exchanger 20 of the embodiment described above, a plurality of wing portions 66 forming a plurality of windows 68 are formed in each fin portion 64 of the plurality of corrugated fins 60, and the plurality of corrugated fins 60 are connected to heat exchange tubes. 50 is attached so that the longitudinal direction of the attachment portion 62 is perpendicular to the flow of the second heat exchange medium (the direction coinciding with the longitudinal direction of the heat exchange tube 50). Even if the plurality of corrugated fins 60 are attached so that the longitudinal direction of the attachment portion 62 is orthogonal to the flow of the second heat exchange medium, the second heat exchange medium flows so as to penetrate the plurality of windows 68. Heat exchange can be performed between the heat exchange medium and the second heat exchange medium. The heat exchanger 20 of the embodiment is arranged such that the longitudinal direction of the mounting portions 62 of the corrugated fins 60 (the longitudinal direction of the heat exchange tubes 50) is the vertical direction (the vertical direction in FIG. 1 is the vertical direction). ), condensed water generated on the corrugated fin 60 flows downward along the mounting portion 62 and is discharged to the outside. On the other hand, a heat exchanger in which corrugated fins are attached to a heat exchange tube so that the longitudinal direction of the attachment portion is parallel to the flow of the second heat exchange medium (the heat exchanger described in Background Art, hereinafter referred to as "comparison When the heat exchanger is used so that the longitudinal direction of the heat exchange tubes 50 is the vertical direction, the longitudinal direction of the corrugated fin mounting portion and the longitudinal direction of the fin portion is horizontal, the condensed water that may occur on the corrugated fins is difficult to be discharged from the fins, and the condensed water stays in the fins, which may hinder the flow of the second heat exchange medium. For this reason, the flow cross-sectional area of the second heat exchange medium is reduced by the amount that the dew condensation water stays, and the heat transfer area is also reduced, thereby reducing the heat exchange efficiency. As can be seen from this description, the heat exchanger 20 of the embodiment can improve the discharge performance of condensed water compared to the heat exchanger of the comparative example, thereby suppressing a decrease in heat exchange efficiency. can do.

In the heat exchanger 20 of the embodiment, a plurality of slits 65 are formed so as to be aligned with the adjacent fin portions 64 of the corrugated fins 60 at the same pitch to form a plurality of blade portions 66. However, the modification illustrated in FIG. As shown in the heat exchanger 120 of the example, adjacent fin portions 164 of the corrugated fin 160 may be formed such that a plurality of blade portions 166 are offset by half a pitch with respect to the flow of the second heat exchange medium. In this case, the plurality of windows 168 formed in the adjacent fin portions 164 of the corrugated fin 160 are also formed to be shifted by half the pitch. In this way, by arranging the plurality of blade portions 166 over a wide range, the heat distribution of the second heat exchange medium can be made more uniform, and the heat exchange efficiency can be improved. When the plurality of blade portions 166 of the adjacent fin portions 164 are formed so as to be shifted by half a pitch, as shown in the heat exchanger 120B of the modified example illustrated in FIG. , ie, the width of the attachment portion may be formed to be shorter than the width of the plurality of wings 166 . In this case, the plurality of wing portions 166 of the adjacent fin portion 164 enter between the plurality of wing portions 166 . Therefore, the number of folds (the number of attachment portions) per unit width of the corrugated fin 160B can be increased, and the heat exchanger can have a large heat transfer area that contributes to heat exchange efficiency.

In the heat exchanger 20 of the embodiment, each fin portion 64 of the plurality of corrugated fins 60 has an angle of about 90 degrees (an angle of about 0 degrees with respect to the flow direction of the second heat exchange medium (such as air)) and However, as shown in the corrugated fin 260 of the modified heat exchanger 220 of FIG. A plurality of wings 266 may be formed as shown. In this case, the second heat exchange medium passing through the plurality of windows 268 changes its flow direction due to contact with the plurality of blades 266, so that the flow of the second heat exchange medium is slightly turbulent and heat is generated. Exchange efficiency can be improved. The angle of the plurality of vanes 266 with respect to the flow direction of the second heat exchange medium (such as air) is preferably in the range of 45 degrees (range of -45 degrees to 45 degrees) centered on 0 degrees. Further, the inclination directions of the plurality of blade portions 266 may alternately change between the adjacent fin portions 264 as in the heat exchanger 220 of the modified example, or may be the same direction. Further, as in the heat exchanger 220 of the modified example, the plurality of blade portions 266 may be shifted by half a pitch between the adjacent fin portions 264, or the plurality of blade portions 66 may be arranged at the same pitch between the adjacent fin portions. You may make it match.

In the heat exchanger 20 of the embodiment, the corrugated fins 60 are formed so that the mounting portions 62 are straight. The portion 362 may be formed so that the bent portion has a shape (meandering shape) in which obtuse V-shapes are connected. In the corrugated fin 360 of this modified example, the plurality of blade portions 366a and 366b are parallel to the flow of the second heat exchange medium, and the angle of rotation for forming the plurality of blade portions 366a and 366b is within an acute angle range. I made it so that Therefore, extension portions 367a and 367b of the plurality of wings 366a and 366b are formed on the acute angle side. In the example of FIG. 12, three wings 366a and 366b are alternately formed. In this way, the angles of the plurality of wing portions 366a and 366b with respect to the fin portion 364 can be made small (acute angles).

In the heat exchanger 20 of the embodiment, the plurality of blade portions 66 are formed perpendicular to the longitudinal direction of the attachment portion 62 (the longitudinal direction of the heat exchange tubes 50). As shown in the example heat exchanger 420 , the plurality of wings 466 of the corrugated fins 460 may be formed at an angle (tilted) with respect to the normal to the flat surface of the heat exchange tube 50 . The heat exchanger 420 of this modification was used by arranging the plurality of heat exchange tubes 50 so that the longitudinal direction thereof is the vertical direction (arranged so that the vertical direction in FIGS. 13 and 14 is the vertical direction). In this case, the condensed water generated on the plurality of corrugated fins 460 flows downward due to the inclination of the plurality of wing portions 466, further flows downward along the mounting portion, and is discharged to the outside. In the heat exchanger 420 of this modified example, it is possible to further improve the discharging performance of condensed water. The angle of inclination of the plurality of blade portions 466 is preferably within the range of 0 to 60 degrees with respect to the perpendicular line from the flat surface of the heat exchange tube 50 .

In the heat exchanger 20 of the embodiment, the plurality of wing portions 66 are formed so as to be perpendicular to the longitudinal direction of the mounting portion 62 (the longitudinal direction of the heat exchange tubes 50) and to form a single plane. As shown in a modified heat exchanger 520 illustrated in FIG. 15, a plurality of wing portions 566 of corrugated fins 560 may be formed in a triangular roof shape (having a V-shaped cross section) with an obtuse bent portion. The heat exchanger 520 of this modified example is arranged such that the longitudinal direction of the plurality of heat exchange tubes 50 is the vertical direction and the bent portions of the plurality of wing portions 566 are arranged upward (the vertical direction in FIG. 15 is When used in the vertical direction), the condensed water generated on the plurality of corrugated fins 560 flows downward on both sides due to the inclination of the plurality of wing portions 566, and further flows downward along the mounting portion to the outside. discharged to Therefore, even in the heat exchanger 520 of this modified example, it is possible to further improve the discharge performance of the condensed water.

In the heat exchanger 20 of the embodiment, the heat exchange tubes 50 and the corrugated fins 60 are arranged alternately. The fins 660 obtained by joining the fins 660a and 660b may be arranged alternately with the heat exchange tubes 50. FIG. The two corrugated fins 660a and 660b have the same configuration as the corrugated fin 460 in which a plurality of wing portions 466 are formed with the inclination described in FIGS. and the inclination of the plurality of wing portions of the corrugated fin 660b are opposite to each other. Therefore, in the fin 660, a plurality of wing portions on both sides of the double attachment portion have a triangular roof shape (V-shaped cross section) with an obtuse bent portion. In the heat exchanger 620 of this modification as well, the longitudinal direction of the plurality of heat exchange tubes 50 is the vertical direction, and the bent portions of the plurality of wings on both sides of the double attachment portion are arranged to face upward. 16 (the vertical direction in FIG. 16 is the vertical direction), condensed water generated on the corrugated fins 660a and 560b of the plurality of fins 660 flows downward on both sides due to the inclination of the plurality of wing portions. It then flows downward along the mounting portion and is discharged to the outside. Therefore, even in the heat exchanger 620 of this modified example, it is possible to further improve the discharge performance of the condensed water.

In the heat exchanger 20 of the embodiment, the corrugated fins 60 are formed such that the mounting portion 62 has a constant width and the mounting portion 62 and the fin portion 64 are perpendicular to each other, and the fin portion 64 is flattened on the heat exchange tube 50 . However, as shown in the modified heat exchanger 720 illustrated in FIG. Corrugated fins 760 may be formed so as to be inclined with respect to the flat surface of tube 50 . In this case, the shape of the attachment portion in the longitudinal direction may be a triangular wave shape as shown in FIG. .

In the heat exchanger 20 of the embodiment, a plurality of slits 65 are formed in the fin portion 64 of the corrugated fin 60, and a plurality of wing portions that form a plurality of windows 68 by rotating between the slits around the center of the rotation axis. 66 is formed, but a plurality of louvers formed by forming and raising a plurality of U-shaped slits in the fin portion of the corrugated fin may be used as the plurality of wing portions, or a cut of any shape may be used. A plurality of wing portions may be used as the raising portion.

Although the embodiments for carrying out the present invention have been described above, the present invention is not limited to such embodiments at all, and can be modified in various forms without departing from the scope of the present invention. Of course, it can be implemented.

INDUSTRIAL APPLICABILITY The present invention can be used in the heat exchanger manufacturing industry and the like.

20, 120, 120B, 220, 320, 420, 520, 620, 720 heat exchanger, 30 inflow member, 32 inflow port, 34 manifold, 36 through hole, 40 discharge member, 42 discharge port, 44 manifold, 46 through hole , 50 heat exchange tube, 52 flow path, 60, 160, 160B, 260, 360, 460, 560, 660a, 660b, 760 corrugated fin, 660 fin, 62, 362, 762 attachment portion, 64, 164, 264, 364, 764 fin section, 65 slit, 66, 166, 266, 366a, 366b, 466, 566, 766 wing section, 67, 367a, 367b extension section, 68, 168, 268 window section.

Claims (9)

A plurality of heat exchange tubes having flow paths for flowing a first heat exchange medium and arranged so that their flat surfaces are parallel; and a plurality of corrugated fins attached between each of the plurality of heat exchange tubes. and a second heat exchange medium flowing in a predetermined direction between adjacent heat exchange tubes to exchange heat between the first heat exchange medium and the second heat exchange medium, wherein ,
The plurality of corrugated fins are attached such that the longitudinal direction of the attachment portion to the heat exchange tube is substantially orthogonal to the predetermined direction,
Each fin portion of the plurality of corrugated fins is formed with a plurality of window portions and a plurality of wing portions forming the plurality of window portions ,
The plurality of wing portions are formed in a V-shape with an obtuse bent portion,
Heat exchanger. The heat exchanger of claim 1, wherein
The plurality of wings are formed so as to form an angle within a range of 45 degrees centered on 0 degrees with respect to the predetermined direction.
Heat exchanger. A plurality of heat exchange tubes having flow paths for flowing a first heat exchange medium and arranged so that their flat surfaces are parallel; and a plurality of corrugated fins attached between each of the plurality of heat exchange tubes. and a second heat exchange medium flowing in a predetermined direction between adjacent heat exchange tubes to exchange heat between the first heat exchange medium and the second heat exchange medium, wherein ,
The plurality of corrugated fins are attached such that the longitudinal direction of the attachment portion to the heat exchange tube is substantially orthogonal to the predetermined direction,
Each fin portion of the plurality of corrugated fins is formed with a plurality of window portions and a plurality of wing portions forming the plurality of window portions ,
The plurality of blade portions are formed so as to be shifted by half a pitch from the plurality of blade portions formed on the adjacent fin portions with respect to the flow of the second heat exchange medium, and have a width longer than the pitch of the fin portions. is formed to be
Heat exchanger. A heat exchanger according to claim 3 ,
The plurality of wings are formed so as to form an angle within a range of 45 degrees centered on 0 degrees with respect to the predetermined direction.
Heat exchanger. The heat exchanger according to claim 3 or 4 ,
The plurality of wings are formed so as to be parallel to a line perpendicular to the flat surface of the heat exchange tube,
Heat exchanger. The heat exchanger according to claim 3 or 4 ,
The plurality of wing portions are formed to form a predetermined angle within a range of 60 degrees with respect to a line perpendicular to the flat surface of the heat exchange tube,
Heat exchanger. The heat exchanger according to claim 3 or 4 ,
The plurality of wing portions are formed in a V-shape with an obtuse bent portion,
Heat exchanger A heat exchanger according to any one of claims 1 to 7,
The mounting portions of the plurality of corrugated fins are formed in a longitudinal direction in such a manner that a bent portion has a shape in which a plurality of obtuse V-shapes are connected,
Heat exchanger. A heat exchanger according to any one of claims 1 to 8,
The plurality of wing portions are formed in a state of being rotated by a predetermined rotation angle about the direction of the slits between the slits formed in the direction across the adjacent heat exchange tubes,
Heat exchanger.

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