JP2004184001A - Heat exchanger - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a header tank having sufficiently high pressure resistance without an increase in the number of manufacturing processes. <P>SOLUTION: The header tank 5 comprises a first tank structural member 8 into which a tube 2 is inserted and held at its end and a second tank structural member 10 jointed to the first tank structural member 8 at the opposite side to the tube 2 to form a space W together with the first tank structural member 8. The first tank structural member 8 is formed with pressing work while the second tank structural member 10 is formed with extruding work. A connection member 12 for bridging the first tank structural member 8 to the tank structural member 10 is pressed into a plate shape extending from the inner face of the first tank structural member 8 to the inner face of the tank structural member 10, arranged in the space W and brazed to the first structural member 8 and the second tank structural member 10. The connection member 12 has a communication passage for communicating a space W1 on the front side of the header tank 5 with a space W2 on the rear side. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a heat exchanger used for a condenser of an air conditioner, for example, and particularly to a technical field of a structure in which a header tank is provided at an end of a plurality of tubes arranged in parallel.
[0002]
[Prior art]
Conventionally, as a heat exchanger of this type, a header tank has a first tank component inserted and held at an end of a tube, and a first tank component joined to an opposite side of the tube of the first tank component. And a second tank component that forms a space with the second tank component (for example, see Patent Document 1).
[0003]
In the heat exchanger of Patent Document 1, in order to enhance the pressure resistance of the header tank, a connecting member as a connecting means for bridging the first and second tank constituent members is formed by extrusion and arranged in the space. , The first and second tank components.
[0004]
[Patent Document 1]
Japanese Patent Application Laid-Open No. H11-351783 (page 5, FIG. 2, FIG. 5)
[0005]
[Problems to be solved by the invention]
By the way, in the heat exchanger of Patent Literature 1, the space of the header tank is partitioned by the connecting member, and there is a possibility that the refrigerant may flow unbalanced in one space. Must be formed on the connecting member. However, in the heat exchanger of Patent Literature 1, since the connecting member is extruded, a communication path must be formed by cutting, thereby increasing the number of manufacturing steps.
[0006]
The present invention has been made in view of such a point, and an object of the present invention is to increase the number of manufacturing steps by focusing on the fact that through-holes and notches can be easily formed at the time of molding a member by press working. It is an object of the present invention to obtain a header tank having a sufficiently high pressure resistance without causing the problem.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, in the invention according to claim 1, a plurality of tubes through which a refrigerant flows are arranged in parallel, and an end portion of each of the tubes is connected so that a header tank having a space therein communicates with each of the tubes. Wherein the header tank includes a first tank component that inserts and holds an end of each tube, and a second tank configuration that is joined to the first tank component opposite to the tube to form the space. And a connecting means arranged in the space and bridging the first and second tank constituent members so as to partition the space, and having a communication path for communicating the partitioned space with each other. The first and second tank constituent members are intended for a heat exchanger formed by extrusion and / or pressing, and the connecting means is formed by pressing.
[0008]
According to this configuration, the first and second tank constituent members are connected by the connecting means, whereby the pressure resistance of the header tank is sufficiently enhanced, and the communication passage of the connecting means is formed, for example, through holes passing through the connecting means. If the connecting means is formed by a notch or a notch, the communicating path can be formed simultaneously and easily at the time of press working of the connecting means, without increasing the number of manufacturing steps.
[0009]
According to a second aspect of the present invention, in the first aspect of the present invention, the first tank component is formed by press working, and the connecting means is provided integrally with the first tank component and brazed to the second tank component. Configuration.
[0010]
According to this configuration, since the first tank component is formed by press working, the hole for inserting and holding the tube can be easily formed. In addition, since the first tank component and the connecting means are integrated, the number of parts can be reduced to further reduce the number of manufacturing steps, and when the connecting means is brazed to the second tank component, The misalignment of both is prevented and brazing is performed firmly.
[0011]
According to a third aspect of the present invention, in the first aspect of the present invention, the connecting means is configured to be separate from the first and second tank components.
[0012]
According to this configuration, the degree of freedom in setting the shape of the connecting means is increased, and the formation of the communication path is facilitated.
[0013]
According to a fourth aspect of the present invention, in the first aspect of the invention, the connecting means is separate from at least one of the first and second tank constituent members and brazed to the separate tank constituent member. A projecting piece is formed at the edge of the separate tank component member side, and an insertion hole into which the projecting piece is inserted is formed in the separate tank component member.
[0014]
According to this configuration, the projecting portion of the connecting means is fitted into the fitting hole of the tank constituent member, and the displacement of the connecting means during brazing is reliably prevented.
[0015]
According to a fifth aspect of the present invention, in the first aspect of the present invention, the connecting means is separate from at least one of the first and second tank constituent members and brazed to the separate tank constituent member. The tank member is formed with a concave portion into which the edge of the connecting means is fitted.
[0016]
According to this configuration, the edge of the connecting means fits into the concave ridge of the tank constituent member, and the displacement during brazing is reliably prevented.
[0017]
According to a sixth aspect of the present invention, in the first aspect of the present invention, the connecting means is provided separately from at least one of the first and second tank constituent members, and a brazing material is provided on the surface in a layered manner. A cutout is formed in the tube corresponding portion so as to avoid contact between the end of the inserted tube and the connecting means.
[0018]
According to this configuration, the connection means is securely brazed to the tank constituent member by the brazing material on the surface of the connection means. In this brazing, the connection means does not contact the end of the tube. The opening at the end of the tube is not blocked by the molten brazing material on the surface of the means.
[0019]
According to a seventh aspect of the present invention, in the first aspect of the present invention, a protrusion protruding toward the first tank component and extending in the longitudinal direction of the header tank is formed on the inner surface of the second tank component. The end of the inserted tube is brought into contact with the tip of the protruding portion of the second tank component to determine the position.
[0020]
According to this configuration, since the tube is positioned only by inserting the end of the tube into the header tank, each tube and the header tank are brazed in a predetermined state without using a jig.
[0021]
According to an eighth aspect of the present invention, in the first aspect of the present invention, the cross section of the communication passage of the connecting means is substantially circular.
[0022]
According to this configuration, it is possible to increase the cross-sectional area of the communication passage while securing the pressure resistance.
[0023]
According to a ninth aspect of the present invention, in the first aspect, at least one of the inner surfaces of the first and second members has a substantially circular surface.
[0024]
According to this configuration, the pressure resistance of the header tank can be further improved.
[0025]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0026]
FIG. 2 shows a heat exchanger according to an embodiment of the present invention. In this example, a case where the heat exchanger is a condenser 1 constituting one element of a refrigeration cycle of a vehicle air conditioner is shown. The condenser 1 is mounted at a front end of an engine room (not shown) of a vehicle body, and a plurality of tubes 2, 2, ... and fins 3, 3, ... extending in the vehicle width direction are alternately arranged vertically. The vehicle comprises a core 4 provided, and a left header tank 5 and a right header tank 6 in the vehicle width direction having spaces W respectively disposed at both ends of the tube 2 and communicating with the tube 2. The wind (indicated by a white arrow A in FIG. 2) exchanges heat by passing through the core 4 from the front to the rear of the vehicle body.
[0027]
As shown in FIG. 1, each tube 2 of the core 4 is a flat tube having a rectangular cross section that is long in the longitudinal direction of the vehicle body, while each fin 3 is formed to extend near both ends in the longitudinal direction of the tube 2. These tubes 2 and fins 3 are formed by molding a thin plate made of an aluminum alloy. The distance between the adjacent tubes 2 corresponds to the vertical length of the fin 3, and the upper end of the fin 3 is brazed to the lower surface of the tube 2. The fins 3 located at the upper and lower ends of the core 4 among the fins 3, 3,... Are held by end plates 7, 7, respectively.
[0028]
The left header tank 5 is formed in a substantially rectangular box shape extending straight across both ends of the core 4 in the direction in which the tubes 2 and the fins 3 are arranged, and includes a first tank component 8 disposed on the tube 2 side. A second tank component 10 joined to the opposite side of the tube 2 of the first tank component 8 to form a space W therein together with the first tank component 8, and a first tank disposed in the space W A connecting member 12 is provided as connecting means for bridging the constituent member 8 and the second tank constituent member 10. Since the left header tank 5 and the right header tank 6 have the same configuration, the left header tank 5 will be described in detail below.
[0029]
The first tank constituent member 8 is formed by pressing a plate made of an aluminum alloy so as to have a substantially U-shaped cross section open to the outside of the core 4 as a whole, and extends along the side surface of the core 4 in the vehicle width direction. A wall portion 8a on the core 4 side extending substantially flat, and a front wall portion 8b and a rear wall portion 8c extending outward from the core 4 from both edges of the core side wall portion 8a in the vehicle longitudinal direction. A brazing material is provided in layers on the inner surface and the outer surface of the header tank 5 of the first tank constituent member 8, and the boundary between the core side wall 8a and the front wall 8b, the core side wall 8a and the rear wall. The inner surface of each of the boundary portions 8c is formed in a substantially arc surface.
[0030]
Tube insertion holes 8d corresponding to the outer shape of the tubes 2 are formed in the core side wall portion 8a of the first tank constituent member 8 in correspondence with the intervals between the tubes 2, 2,. The first tank component 8 is inserted and held. On the other hand, the outer end portions of the front wall 8b and the rear wall 8c of the first tank component 8 on the outer side of the core 4 are bent so as to match the outer surface shape of the second tank component 10, respectively. It is swaged and fixed to the second tank component 10.
[0031]
The second tank constituent member 10 is formed by extruding an aluminum alloy so as to have a substantially U-shaped cross section open to the inside of the core 4, and a tank facing the core side wall portion 8 a of the first tank constituent member 8. An outer wall portion 10a, and a front wall portion 10b extending from both edges of the tank outer wall portion 10a in the vehicle longitudinal direction so as to fit inside the front wall portion 8b and the rear wall portion 8c of the first tank component 8; And a rear wall portion 10c. The inner surface of the second tank component 10 is formed in a substantially arc-shaped surface like the inner surface of the first tank component 8. The front wall 10b and the rear wall 10c of the second tank component 10 are reinforced by joining the inner surfaces of the front wall 8b and the rear wall 8c of the first tank component 8 to their outer surfaces. , Are formed relatively thin. Further, when the first tank constituent member 8 and the second tank constituent member 10 are combined, the upper and lower ends are formed in a tubular shape, and these openings are closed by caps 15 and 16.
[0032]
At a substantially central portion between the front wall portion 10a and the rear wall portion 10b on the inner surface of the second tank constituent member 10, a protruding portion 13 protruding toward the first tank constituent member 8 and extending over both longitudinal ends of the header tank 5 is provided. Is formed. The projecting portion 13 is for positioning the tube 2, and as shown in FIG. 3, the end of the tube 2 inserted into the tube insertion hole 8 d of the first tank component 8 is connected to the projecting portion 13. And is positioned in contact with the tip of the head. Further, a concave ridge portion 14 having a U-shaped cross section extending in the longitudinal direction of the header tank 5 is formed on the distal end side of the protruding portion 13.
[0033]
The connecting member 12 is formed of an aluminum alloy so as to extend from the inner surface of the first tank component 8 to the inner surface of the second tank component 10 and extend over both ends in the longitudinal direction of the header tank 5 so as to form a substantially rectangular plate. It is formed by pressing a plate material. A brazing material is provided in a layer form on the surface of the connecting member 12 so as to be brazed to the inner surfaces of the first tank constituent member 8 and the second tank constituent member 10. W is partitioned into a space W1 on the front side of the vehicle body and a space W2 on the rear side.
[0034]
U-shaped notches 12a, 12a,... Are formed in the connecting member 12 at locations corresponding to the tubes 2 so that the ends of the tubes 2 can be inserted. The vertical dimension and the depth dimension of each notch 12a are such that the tube 2 positioned by the protruding portion 13 of the second tank component 10 does not contact the connecting member 12, as shown in FIG. Is set to
[0035]
Projecting pieces 12b, 12b,... Projecting outward from the header tank 5 are formed between the adjacent notches 12a, 12a of the connecting member 12, while the projecting pieces 12b, Are formed. Fitting holes 8e, 8e,... Into which the fitting members 12b are fitted are formed, and the edge of the connecting member 12 on the side of the second tank component 10 is formed in the concave portion 14 of the second tank component 10. It is inserted. As a result, the first tank constituent member 8 side and the second tank constituent member 10 side of the connecting member 12 are held by the two tank constituent members 8, 10 separate from the connecting member 12.
[0036]
A communication passage 12c is formed between the notches 12a, 12a of the connecting member 12 to communicate the space W1 on the front side of the space W and the space W2 on the rear side of the space W with each other. The communication passage 12 c is formed by a substantially circular through hole penetrating the connecting member 12, and a plurality of the communication passages 12 c are formed in the longitudinal direction of the header tank 5. The cross-sectional shape of the communication passage 12c may be an oval or a rectangle. Although not shown, for example, a notch is provided at an edge of the connecting member 12 on the first tank component 8 side, and the notch is formed. The communication path may be configured by the following.
[0037]
In the condenser 1 configured as described above, the refrigerant flowing into the space W from the inflow cooler pipe 18 connected to the upper part of the left header tank 5 flows into the tubes 2, 2,. When the refrigerant flows through the header tank 5, the refrigerant in the space W1 on the front side of the header tank 5 and the refrigerant in the space W2 on the rear side flow through the spaces W1 and W2 through the communication passage 12c of the connecting member 12. . As a result, the refrigerant flows through the two spaces W1 and W2 in a well-balanced manner, and the flow of the refrigerant to each tube 2 is improved. Then, the refrigerant flowing into each tube 2 flows through the tubes 2 to the right in the vehicle width direction, flows into the right header tank 6 and aggregates, and flows through the cooler pipe 19 connected to the lower portion of the right header tank 6. Spill through.
[0038]
Therefore, in the condenser according to this embodiment, the connecting member 12 extending over both ends in the longitudinal direction of the header tank 5 is brazed to the inner surface of the first tank constituent member 8 and the inner surface of the second tank constituent member 10, so that both members 8, 10 Therefore, the pressure resistance of the header tank 5 can be sufficiently increased. Further, since the connecting member 12 is formed separately from the first tank constituent member 8 by press working, the communication passage 12c for communicating the front space W1 and the rear space W2 of the header tank 5 with each other is formed. At the time of formation, the connecting member 12 can be formed at the same time by a molding die without performing a cutting process, so that the number of manufacturing steps of the condenser 1 does not increase.
[0039]
Further, since the connecting member 12 is separate from the first tank constituent member 8 and can be press-worked alone, the degree of freedom in setting the shape is high, and therefore the position and shape of the communication passage 12c are formed. Can be easily set.
[0040]
When brazing each member, the first tank constituent member 8, the second tank constituent member 10, the connecting member 12, and the caps 15, 16 constitute header tanks 5, 6, and these header tanks 5, 6 After assembling the and the core 4 integrally, the core and the core 4 are carried into a furnace and heated.
[0041]
When assembling the header tanks 5 and 6 and the core 4, the end of each tube 2 is simply inserted into the tube insertion hole 8d of the first tank constituent member 8 so that the end of each tube 2 is formed in the second tank. Since the positioning is performed in contact with the tip of the protruding portion 13 of the member 10, the tubes 2 and the header tanks 5, 6 can be assembled in a predetermined state without using a jig. The protruding piece 12b of the connecting member 12 on the first tank component 8 side is fitted into the fitting hole 8e of the first tank component 8, and the second tank component 10 is on the second tank component 10 side. , The displacement of the connecting member 12 due to vibration at the time of carrying into the furnace or deformation of each part at the time of heating can be reliably prevented, and brazing can be performed firmly.
[0042]
A notch 12a is formed in the connecting member 12 so that the connecting member 12 does not come into contact with the end of the tube 2, so that when the brazing material on the surface of the connecting member 12 is melted during brazing, The brazing material does not adhere to the end of the tube 2, and the opening of the tube 2 can be prevented from being closed.
[0043]
In this embodiment, the core side wall portion 8a of the first tank constituent member 8 is formed to be substantially flat. However, the present invention is not limited to this. For example, the core side wall portion 8a may be formed as shown in FIG. A recess 8f that is depressed toward the space W and extends vertically may be formed substantially at the center of the portion 8a in the vehicle longitudinal direction. Thereby, substantially the entire inner surface of the first tank component 8 becomes an arc surface, and the pressure resistance of the header tank 5 can be further improved.
[0044]
Further, in this embodiment, the condenser 1 in which the tubes 2 are arranged in a line in the air passage direction of the core 4 is described. However, the present invention is not limited to this. As in 2, the present invention can be applied to a condenser in which the tubes 2 are arranged in two rows in the air passage direction of the core 4. In this modification, a first tank constituent member 31 and a second tank constituent member 32 of the header tank 30 are formed corresponding to the two rows of tubes 2, 2. A tube insertion hole 31f, 31f is provided side by side on the core side wall 31a, including a portion 31a, a front wall 31b, and a rear wall 31c. On the other hand, the second tank constituent member 32 includes a tank outer wall 32a, a front wall 32b, and a rear wall 32c.
[0045]
The space W formed by the first tank constituent member 31 and the second tank constituent member 32 is partitioned by a partition plate 33 into a space on the upstream side and a space on the downstream side in the air passing direction. Are provided with connecting members 12 and 12 configured in the same manner as in the above-described embodiment.
[0046]
The partition plate 33 is formed by press working in the same manner as the connecting member 12, and the second tank component 32 side is fitted into a concave ridge portion 34 formed on the inner surface of the second tank component 32, The protruding piece 33a on the first tank component 31 is fitted into a fitting hole 31d formed in the first tank component 31. Projections 35, 35 for positioning the tube 2 are formed on the inner surface of the second tank constituent member 32 at positions corresponding to the tubes 2, 2, and an edge of the connecting member 12 is formed on the tip side of the projection 35. Concave ridges 36, 36 to be fitted are formed.
[0047]
When the two spaces separated by the partition plate 33 communicate with each other, a through hole 33b may be formed in the partition plate 33, as shown in FIG. Thus, the refrigerant path in the condenser 1 can be set freely.
[0048]
(Other embodiments)
It should be noted that the present invention is not limited to the above embodiment, but includes other various embodiments. That is, in the above-described embodiment, the first tank constituent members 8, 31 and the second tank constituent member are formed by the connecting member 12 separately formed from the first tank constituent members 8, 31 and the second tank constituent members 10, 32. Although the members 10 and 32 are bridged, as shown in FIGS. 6 and 7, a plate-like connecting portion 40a provided integrally with the first tank component 40 may be used as the connecting means. In this case, the second tank constituent member is the same as the second tank constituent member 10 of the embodiment.
[0049]
Specifically, the first tank constituent member 40 includes a core side wall portion 40b, a front wall portion 40c, and a rear wall portion 40d, and the connecting portion 40a is formed at a substantially central portion of the core side wall portion 40b in the vehicle longitudinal direction. The connecting portion 40a is formed so as to protrude into the space W, and the distal end of the connecting portion 40a is fitted into the concave ridge portion 14 of the tank component 10 and brazed. As shown in FIG. 7, a notch 40e corresponding to the end of the tube 2 is formed in the connecting portion 40a so as to be continuous with the tube insertion hole 40f of the first tank component 40. The portion 40a is formed so as not to contact the end of the tube 2. A communication path 40g is formed between the adjacent cutouts 40e, 40e to communicate the space W1 on the front side of the header tank 5 and the space W2 on the rear side.
[0050]
In this embodiment, the first tank component 40 and the second tank component 10 are bridged by the connecting portion 40a, so that the pressure resistance of the header tank 5 can be sufficiently increased, and the first tank component 40 Since the connecting portion 40a and the communication passage 40g of the connecting portion 40a can be formed at the same time at the time of press forming, the number of manufacturing steps is not increased. Further, since the connecting portion 40a is integral with the first tank component 40, the number of parts can be reduced and the number of assembling steps can be reduced, and at the time of brazing, the connecting portion 40a will not be displaced and firmly. Can be attached.
[0051]
In this embodiment, when arranging the tubes 2 in two rows in the air passage direction of the core 4, as shown in a modified example shown in FIG. One tank constituent member 51 is formed. That is, the first tank constituent member 51 includes a core side wall portion 51a, a front wall portion 51b, and a rear wall portion 51c, and the tube insertion holes 51f, 51f are juxtaposed in the core side wall portion 51a. On the other hand, the second tank constituent member is the same as the second tank constituent member 32 of the modified example 2 of the embodiment.
[0052]
A projecting portion 51d that partitions the space W into a space on the upstream side and a space on the downstream side in the air passing direction is formed by press working at a substantially central portion of the core side wall portion 51a of the first tank constituent member 51 in the vehicle longitudinal direction, On both sides of the protruding portion 51d, connecting portions 51e, 51e similar to the second modification of the embodiment are formed. The protruding portion 51d and the connecting portions 51e, 51e are fitted into braided portions 34, 35, 35 formed on the inner surface of the second tank constituent member 32 and brazed. Also in this case, the passage of the refrigerant in the condenser 1 can be freely set by forming the through hole 51g of the protruding portion 51d at an arbitrary position.
[0053]
In each of the above embodiments, the first tank constituent members 8, 31, 40, and 51 are press-formed products, and the second tank constituent members 10 and 32 are extruded products. The tank components 8, 31, 40, 51 may be extruded products, and the second tank components 10, 32 may be press products. In addition, the first tank constituent members 8, 31, 40, 51 and the second tank constituent members 10, 32 may both be extruded products or pressed products.
[0054]
Further, the present invention can be applied to an evaporator of an air conditioner.
[0055]
【The invention's effect】
As described above, according to the heat exchanger according to the first aspect of the present invention, the first and second tank components constituting the header tank are bridged, and the connecting means having the communication path is provided, and the first and second tanks are provided. When the second tank constituent member is formed by extrusion and / or pressing, the connecting means is pressed, so that the communication passage can be formed simultaneously and easily at the time of forming the connecting means. A header tank with sufficiently high pressure resistance can be obtained without increasing the number of manufacturing steps.
[0056]
According to the second aspect of the present invention, since the first tank component is formed by press working, the hole for inserting and holding the tube can be easily formed. Further, since the connecting means is provided integrally with the first tank constituent member and the connecting means is brazed to the second tank constituent member, the number of parts can be reduced, and the number of manufacturing steps can be further reduced. The misalignment of both members is prevented, so that brazing can be performed firmly.
[0057]
According to the third aspect of the present invention, since the connecting means is separate from the first and second tank components, the degree of freedom in setting the shape of the connecting means is increased, and the communication passage can be easily formed.
[0058]
According to the fourth aspect of the present invention, the connecting means is separate from at least one of the first and second tank constituent members, and is brazed to the separate tank constituent member, and the projecting piece of the connecting means is separated from the other. Since the fitting means is fitted into the fitting hole of the tank constituent member of the body, it is possible to reliably prevent the displacement of the connecting means when brazing.
[0059]
According to the fifth aspect of the present invention, the connecting means is separate from at least one of the first and second tank constituent members and brazed to the separate tank constituent member. Since the edge of the connecting means is fitted into the concave ridge, displacement of the connecting means during brazing can be reliably prevented.
[0060]
According to the invention as set forth in claim 6, the connecting means is separate from at least one of the first and second tank constituent members, and a brazing material is provided in a layer on the surface. The notch was formed so as to avoid contact between the end of the tube and the connecting means, so that while the connecting means was securely brazed, the opening at the end of the tube was blocked by the molten brazing material on the surface of the connecting means. It can be prevented before it happens.
[0061]
According to the seventh aspect of the present invention, a protrusion protruding toward the first tank constituent member is formed on the inner surface of the second tank constituent member, and an end of a tube inserted into the first tank constituent member is provided at the tip of the protrusion. Since the positioning is performed by abutting, each tube and the header tank can be brazed in a predetermined state without using a jig.
[0062]
According to the eighth aspect of the invention, it is possible to increase the cross-sectional area of the communication path while securing the pressure resistance.
[0063]
According to the ninth aspect, the pressure resistance of the header tank can be further improved.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing a left header tank and a tube in a vehicle width direction.
FIG. 2 is a perspective view of the condenser according to the present invention as viewed from the rear side of the vehicle body.
3A is a sectional view taken along line BB in FIG. 2, FIG. 3B is a sectional view taken along line CC in FIG. 2, and FIG. 3C is a sectional view taken along line D-C in FIG. It is sectional drawing in the D line.
FIG. 4 is a diagram corresponding to FIG.
5A is a diagram corresponding to FIG. 3B, and FIG. 5B is a cross-sectional view taken along the line EE in FIG.
FIG. 6 is a diagram corresponding to FIG. 1 according to another embodiment.
7A and 7B are diagrams corresponding to FIGS. 3A and 3B, respectively, and FIG. 7C is a diagram corresponding to line FF in FIG. 7B according to another embodiment. It is sectional drawing.
8A is a diagram corresponding to FIG. 5A, and FIG. 8B is a cross-sectional view taken along line GG of FIG. 8A according to a modification of the other embodiment.
[Explanation of symbols]
2 tubes
4 core
5,6 header tank
8, 31, 40, 51 First tank component
8e insertion hole
10, 32 Second tank component
12 connecting member (connecting means)
12a, 40e Notch
12b Projection piece
12c, 40g communication passage
13,35 Projection
14,36 concave streak
40a connection part (connection means)
W space

Claims (9)

A plurality of tubes through which the refrigerant flows are arranged in parallel, and a header tank having a space therein is disposed at an end of each tube so as to communicate with each of the tubes, and the header tank is an end of each of the tubes. A first tank component that inserts and holds the portion, a second tank component that is joined to the opposite side of the tube of the first tank component to form the space, and is disposed in the space to partition the space. Connecting means for bridging the first and second tank components and having a communication path for communicating the partitioned spaces with each other; and wherein the first and second tank components are extruded and / or pressed. A heat exchanger formed by processing,
The heat exchanger is characterized in that the connecting means is formed by press working. In claim 1,
The first tank component is formed by press working,
A heat exchanger, wherein the connecting means is provided integrally with the first tank component and is brazed to the second tank component. In claim 1,
The heat exchanger, wherein the connecting means is separate from the first and second tank components. In claim 1,
The connecting means is separate from at least one of the first and second tank components, and is brazed to the separate tank component.
A projecting piece is formed at an edge of the connecting means on the side of the separate tank component, and an insertion hole into which the projecting piece is inserted is formed in the separate tank component. And heat exchanger. In claim 1,
The connecting means is separate from at least one of the first and second tank components, and is brazed to the separate tank component.
The heat exchanger according to claim 1, wherein a concave portion into which the edge of the connecting means is fitted is formed on the inner surface of the separate tank component. In claim 1,
The connecting means is separate from at least one of the first and second tank constituent members, and a brazing material is provided in a layer on the surface,
A heat exchanger, wherein a notch is formed at a portion of the connecting means corresponding to the tube so as to avoid contact between the end of the inserted tube and the connecting means. In claim 1,
On the inner surface of the second tank constituent member, a protruding portion that protrudes toward the first tank constituent member and extends in the header tank longitudinal direction is formed,
A heat exchanger, wherein an end of a tube inserted into a first tank component is positioned in contact with a tip of a protruding portion of the second tank component. In claim 1,
A heat exchanger characterized in that the communication passage of the connecting means has a substantially circular cross section. In claim 1,
A heat exchanger, wherein at least one of the inner surfaces of the first and second tank constituent members has a substantially circular arc surface.

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