KR101279767B1 - Heat exchanger - Google Patents

Abstract

Provided are a heat exchanger and a method of manufacturing the same, which simplify the manufacturing process by simply mounting a heat pipe on a header. When manufacturing the heat exchanger 1 which heat-exchanges a fluid through the heat exchanger tube 4 attached to the header 2, the header 2 is comprised from the several header unit 21 and the header cover 3. . The header unit 21 is configured to oppose a pair of upper and lower unit separators 22, and the unit separator 22 forms a recess 28 which divides the heat transfer tube 4 in half. The heat transfer pipe 4 is fitted into the recess 28. Then, the soldered portion 5 is soldered with the brazing material 5, and then the header cover 3 is attached to the opening 27 opening of the laminated header unit 21. As shown in FIG.

Description

Heat Exchanger {HEAT EXCHANGER}

The present invention relates to a heat exchanger having left and right headers and heat transfer tubes provided between the headers, and more particularly, to a heat exchanger in which a heat transfer tube can be easily connected to the header.

The structure of the conventional general shell and tube heat exchanger (patent document 1 etc.) is shown in FIG. In FIG. 14, the code | symbol 201 is a fin and is provided in the direction perpendicular | vertical to the axial direction of the some heat exchanger tube 202. In FIG. In general, a plurality of pins 201 are provided at regular intervals, but only the both ends are shown in FIG. Reference numeral 202 denotes a heat transfer tube, through which a fluid to be cooled is passed. Reference numeral 203 denotes headers provided at both ends of the heat transfer tube 202 to allow fluid to flow into the plurality of heat transfer tubes. A plurality of partition plates 204 are provided inside the header 203. The partition plates 204 regulate the flow direction of the fluid, and the fluid flowing from one heat transfer tube 202 is transferred to the other heat transfer tube. (202).

In the case of cooling the fluid using such a shell and tube heat exchanger, the fluid is first introduced from the header 203 on the leftmost upper side in FIG. Then, the fluid passes through the heat transfer tube 202 of the uppermost (first stage) to the partition space 205 of the header 203 on the right side, and therefrom, to the heat transfer tube 202 of the second stage within the partition space 205. Flow. And the fluid flows to the partition space 205 of the 2nd stage of the header 203 of the left side, and flows similarly below meandering the header 203 of the right side and the header 203 of the left side similarly. On the other hand, when air flows along the fin 201 provided in the direction perpendicular to these heat transfer tubes 202, heat exchange is performed between the air and the surface of the fin 201 or the heat transfer tube 202, and the heat transfer tube 202 It is possible to cool the fluid flowing through the inside.

By the way, when manufacturing such a heat exchanger, generally, a pair of left and right headers, several heat exchanger tubes, fins, etc. are prepared, and the left and right ends of the heat exchanger tube are attached to a header. In the case where the heat transfer tube is attached to the header, an insertion hole for passing the heat transfer tube is formed on the side of the header facing each other, and the end of the heat transfer tube is inserted in the insertion hole in the axial direction. Similarly, the heat exchanger tube is inserted into the insertion hole of the header, and both ends are attached to the insertion hole, and the gap between the heat transfer tube and the insertion hole is soldered to fill the hole (Fig. 2). ).

[Patent Document 1] Japanese Patent Application Laid-Open No. 2004-108601 [Patent Document 2] Japanese Patent Application Laid-Open No. 2006-308144

However, the following problem arises in the method of inserting a heat exchanger tube into the insertion hole of a header.

That is, in the conventional method of inserting the heat transfer tube by inserting the insertion hole in the header, it is necessary to insert the heat transfer tube in the insertion hole, so that the number of heat transfer tubes increases, so that the insertion work takes time. In particular, in the case where the heat transfer tube is attached to the header on the opposite side after the heat transfer tube is attached to the one header, the ends of the heat transfer tube are constrained on the one header, so that the ends of all the heat transfer tubes are positioned at the insertion holes on the opposite side. If it is not aligned after it is aligned, it will not be possible to insert the heat pipes.

Accordingly, an object of the present invention is to provide a heat exchanger and a method for manufacturing the same, which can simplify the manufacturing process by simply attaching the heat transfer tube to the header.

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That is, in order to solve the said subject, in order to solve the said subject, it consists of two pairs of headers and the heat exchanger tube which consists of an inner pipe | tube and an exterior, The heat exchanger which heat-exchanges a fluid through the said inner pipe | tube and an exterior, respectively, WHEREIN: And a pair of first headers for passing the fluid between the outer tube and the inner tube, and a pair of second headers for allowing the fluid to pass through the inner tube. The first header includes a plurality of first wall surfaces having a divided surface divided into a surface parallel to an axial surface of the heat transfer pipe, and a second wall surface facing the first wall surface. And a first concave portion provided on the dividing surface of the first wall surface and formed to be in contact with the outer peripheral portion of the exterior, and a second concave portion provided on the dividing surface of the second wall surface and formed to be in contact with the outer peripheral portion of the inner tube. Moreover, it is comprised so that the clearance gap between the said 1st recessed part and an external appearance, the clearance gap between a 2nd recessed part, and an inner pipe | tube, and a split surface may be sealed by the sealing material.

In such a configuration, the heat transfer tube can be mounted and fitted from the top of the recess, so that the work efficiency can be improved significantly compared with the case where the heat transfer tube is inserted from the axial direction into the insertion hole. In addition, when the multi-pipe is used, not only the external appearance but also the inner tube can be fitted in the concave portion, so that the work efficiency of mounting is significantly improved as compared with the case of inserting the outer or inner tube into the insertion hole from the axial direction. You can do it.

Moreover, in this invention, a 2nd header is comprised so that it may have a 3rd inside wall surface which has a division surface divided into the surface parallel to the axial surface of the said inner pipe | tube, and the 3rd recessed part formed in contact with the outer peripheral part of an inner pipe | tube. .

If comprised in this way, also about a 2nd header, an inner tube can be inserted in the upper and lower 3rd recessed parts similarly, and the mounting operation can be made simple.

Moreover, when using such a heat exchanger tube, the heat exchanger tube is comprised so that it may have two inner tubes inscribed in an external appearance, and correspondingly, the dividing surface of a 1st wall surface and the dividing surface of a said 2nd wall surface are set to the same surface. .

By doing so, by matching the outer surface of the coaxial tube with the axial surface of the inner tube, the respective divided surfaces of the first concave portion and the second concave portion can coincide, and a plurality of inner tubes can be fitted at the same time.

According to the present invention, a heat exchanger comprising two pairs of headers and a heat exchanger tube formed of an inner tube and an outer tube, wherein the two pairs of headers are disposed between the outer tube and the inner tube. It consists of a pair of 1st header which let a fluid pass, and a pair of 2nd header which let a fluid pass through an inner tube. The first header includes a plurality of first wall surfaces having a divided surface divided into a surface parallel to the axial surface of the heat transfer pipe, and a second wall surface facing the first wall surface. It is comprised so that a 1st recessed part provided in the division surface and formed in contact with the outer peripheral part of an external appearance, and a 2nd recessed part provided in the division surface of the said 2nd wall surface and formed in contact with the outer peripheral part of an inner tube may be comprised. Then, the gap between the first concave portion and the external appearance, the gap between the second concave portion and the inner tube, and the divided surface are sealed with an encapsulant, whereby the heat transfer tube can be fitted and inserted from above the concave portion. Compared with the case of inserting a heat pipe from the axial direction, work efficiency can be improved significantly. In the case of using the multi-pipe, the inner pipe as well as the outer pipe can be fitted in the concave portion in the same manner, so that the work efficiency of the mounting can be significantly improved as compared with the case of inserting the outer pipe or the inner pipe into the insertion hole from the axial direction. It becomes possible.

1 is a schematic diagram of a heat exchanger showing one embodiment of the present invention.
Figure 2 is an exploded perspective view of the header unit and the heat transfer tube in the same form.
3 is a view showing a state in which a header unit of the same form is assembled;
4 is an exploded perspective view of another heat pipe and a header unit in the same configuration;
5 is a state in which a header cover is mounted on a header unit of the same form;
Fig. 6 is a diagram in which header units of the same form are overlapped.
Fig. 7 shows a header unit in the second embodiment.
8 is a state in which a header cover is mounted on the header unit of FIG.
Fig. 9 is a diagram showing a unit separator in the third embodiment.
10 is a schematic view showing a heat exchanger using a coaxial tube according to a fourth embodiment.
Fig. 11 is an exploded perspective view showing the header unit in the fourth embodiment.
The figure which shows the state which covered the recessed part in other embodiment.
The figure which shows the coaxial tube in another embodiment.
14 is a schematic view of a general heat exchanger in the prior art.

First Embodiment

EMBODIMENT OF THE INVENTION Hereinafter, 1st Embodiment of this invention is described with reference to drawings. As shown in FIG. 1, the heat exchanger 1 according to the present embodiment includes a plurality of heat transfer tubes 4 between the left and right headers 2. A pair of units separated by a plurality of header units 21 and a header cover 3 and having recesses 28 for fitting the header units 21 into the heat transfer tubes 4 from above and below. It is made of a sieve 22. Hereinafter, this embodiment is demonstrated in detail. In addition, as shown in FIG. 2, the side in which the heat exchanger tube 4 is mounted is made into the front surface (1st wall surface 23), and the extension direction of the heat exchanger tube 4 is rearward as shown in FIG. ), And the left and right sides thereof will be described as the side surface, the upper side, and the lower side as the top and bottom surfaces, respectively.

The header 2 is configured to allow the fluid to be exchanged to flow into and out of each heat pipe 4, and includes a header unit 21 for holding heat pipes 4 arranged in a line to form a coplanar shape. And a header cover 3 mounted from the rear side in a state in which the header units 21 are stacked. When the fluid flows in through the header 2, the fluid flows in from the inlet 31 of the header cover 3, and the heat transfer pipe 4 passes through the opening 27 provided on the rear side of the header unit 21. ). On the other hand, in the case of discharging the fluid, the fluid obtained by heat exchange in the heat transfer pipe 4 is led to the rear end side of the header unit 21 and discharged from the discharge port 32 through the gap space S with the header cover 3. Let's do it.

The header unit 21 which comprises such a header 2 is comprised so that a pair of unit separator 22 may face up and down, as shown in FIG. The unit separator 22 is provided with a plurality of recesses 28 on the first wall surface 23 on which the heat transfer pipe 4 is mounted, and the left and right sides 24 and the bottom surface 25 are continuous so as to be continuous therefrom. And the opening part 27 which opened the rear surface side is provided. This 1st wall surface 23 is divided into the divided surface 20 parallel to the axial surface of the heat exchanger tube 4, and the several recessed part 28 is formed in the divided surface 20. As shown in FIG. The divided surface 20 is divided by a surface parallel to the axial surface of the heat transfer pipe 4, and the recessed portion 28 has a shape having a shape obtained by dividing the outer shape of the heat transfer tube 4 in half. . In addition, in FIG.2 and FIG.3, since the heat exchanger tube 4 is circular, the shape of the recessed part 28 is also made semi-circular, but when using the flat heat exchanger tube 4 shown in FIG. The lower half of this heat exchanger tube 4 can also be made into the semi-flat shape divided into half. The concave portion 28 formed in such a shape is provided at a position that is symmetrical with respect to the first wall surface 23, whereby the unit separator 22 is placed in the vertical direction and inverted. Even when the openings 29 are opposed to each other, the openings 29 are aligned to allow the heat transfer pipe 4 to be fitted thereto.

On the other hand, the header cover 3 mounted from the rear side of the header unit 21 is configured by providing an inlet 31 through which fluid is introduced and an outlet 32 through which the fluid is discharged, as shown in FIG. The fluid is diverted to each header unit 21 to be introduced (or discharged) and guided to the heat transfer pipe 4. As shown in FIG. 5, the header cover 3 is mounted to cover the header units 21 in the stacked state, and the clearance space S is provided in the opening 27 at the rear side of the header unit 21. In the formed state, the fluid is made to flow into the header unit 21 from there.

The heat transfer tube 4 with high thermal conductivity is attached to the header 2 comprised in this way. This heat exchanger tube 4 is comprised from metal, etc., The outer diameter dimension is 0.8 mm-2.0 mm, Preferably, 0.9 mm-1.5 mm, The inner diameter dimension is 0.7 mm-1.9 mm, Preferably, 0.8 mm-1.4 mm It is composed of circular cross section of degree. In the case where the heat transfer tube 4 is mounted on the header 2, a brazing material 5 or the like is used as the bonding medium, and the gap is separated from the recess 28 of the header 2 by filling it.

Next, the case where the heat exchanger 1 comprised in this way is manufactured is demonstrated. When manufacturing this heat exchanger 1, first, arrange | position so that the recessed part 28 of the unit separator 22 may become upward, and in that state, the opening part of the recessed part 28 is carried out. The heat transfer pipe 4 is mounted from (29). When attaching the heat exchanger tube 4 to this recessed part 28, the some heat exchanger tube 4 is rolled off on the unit separator 22, and the heat exchanger tube 4 which fell into the recessed part 28 fell. Remove and install other heat transfer tubes (4). After the heat transfer tube 4 is mounted in this manner, the position of the end of the heat transfer tube 4 is aligned, and then the unit separator 22 that is upside down is covered from above, and the top and bottom unit separators 22 are recessed. The heat exchanger tube 4 is inserted in the part 28. The gap between the divided surface 20 of the upper and lower unit separators 22 and the heat transfer tube 4 and the recesses 28 is soldered with the brazing material 5.

Hereinafter, in the same manner, a plurality of header units 21 on which the heat transfer tubes 4 are mounted are provided, and these are stacked in the vertical direction. At this time, the rear side of the header unit 21 is in an open state, and the header cover 3 is mounted from the rear side to form a clearance S in the rear side of the header unit 21. After attaching the header cover 3 in this manner, the joint portion of the header cover 3 and the header unit 21 is soldered so that the fluid does not leak to the outside.

The effect at the time of using the heat exchanger 1 comprised in this way is demonstrated.

First, when a fluid flows in from the inlet 31 of one header 2, the fluid flows into the clearance space S of the header cover 3 and the header unit 21, and each header unit 21 therefrom. Branch), and flows to each heat pipe (4). At this time, the fluid is exchanged with another fluid flowing through the outer circumferential portion of the heat transfer pipe 4, and is discharged from the header unit 21 on the opposite side in the state where the heat is exchanged. And it is discharged | emitted from the discharge port 32 of the header cover 3 via the clearance space S of the back side of the header unit 21. As shown in FIG.

As described above, according to the above embodiment, the heat transfer tube 4 is inserted in the axial direction as in the prior art by inserting the heat transfer tube 4 so that the plurality of unit separators 22 having the concave portion 28 face up and down. Compared to the case, the installation work can be greatly simplified.

In addition, although the said 1st Embodiment was made to oppose the unit separator 22 which has the same shape up and down, when the welding stand at the time of soldering becomes small, as shown in FIG. The other unit separator 22 may be configured to be slightly smaller, and the first wall surface 23 or the side surface 24 may be overlapped and soldered. At this time, if the header cover 3 is to be attached to the header unit 21, a gap is formed between the smallly formed unit separator 22 (the upper unit separator 22 in FIG. 6) and the header cover 3. However, the gap may be sealed using the brazing material 5, a metal plate, or the like.

≪ Second Embodiment >

Next, 2nd Embodiment of this invention is described using FIG. In the first embodiment, the rear side of the header unit 21 is opened to allow fluid to pass therethrough. In the second embodiment, the side surface of the header unit 21 is opened to allow fluid to flow there. It was to pass.

The structure of the header unit 21 and the header cover 3 in this embodiment is demonstrated using FIG. 7 or FIG. The header unit 21 is configured to face a pair of unit separators 22 in the same manner as in the first embodiment. Each unit separator 22 corresponds to the shape of the heat transfer pipe 4. A concave portion 28 divided into a concave portion, a rear surface 26 facing the first wall surface 23 having the concave portion 28, and a bottom surface 25, so as to form an overall 'co' shape. Consists of. Then, in the case where the header cover 3 is mounted by opening the upper and side surfaces thereof, similarly to the first embodiment, the heat transfer tube 4 is inserted into the pair of unit separators 22 and soldered. Lay in state. Next, the header cover 3 is mounted and soldered so that the opening 27 of the header unit 21 laminated as described above has a clearance space S.

Even in this case, since the heat transfer tube 4 is fitted into the pair of unit separators 22 divided in half, the mounting of the heat transfer tube 4 in the axial direction is more sharp than in the conventional case. This will simplify your work.

In addition, in this embodiment, what has attached | subjected the code | symbol same as 1st Embodiment shall have a structure similar to 1st Embodiment.

≪ Third Embodiment >

Next, 3rd Embodiment of this invention is described using FIG. In the said embodiment, although the recessed part 28 was provided in the upper side part in the 1st wall surface 23 of the unit separator 22, in this embodiment, the upper side part and the lower side part of the 1st wall surface 23 are provided. The recessed part 28 is provided in this.

The unit separator 22 has a first wall surface 23 and both side surfaces 24, and a bottom surface 25 is provided at the top and bottom center positions of these wall surfaces. It is to be opened. And the recessed part 28 which divided | transduced the heat exchanger tube 4 in half parallel with the axial surface was formed in the dividing surface 20 of this 1st wall surface 23, and the same shape also in the lower dividing surface 20 In this case, when the same unit separator 22 is stacked, the outer peripheral portion of the heat transfer pipe 4 is sandwiched and held in each recess 28. .

Even in this case, the heat transfer pipe 4 is inserted into the recess 28 of the pair of unit separators 22 divided in half, so that the heat transfer pipe 4 is inserted in the axial direction as in the prior art. Compared to the case it is possible to greatly simplify the installation work.

In addition, in this embodiment, when stacking the unit separator 22, the number of sheets of the bottom face 25 in the up-down direction is reduced, so that the thickness in the up-down direction can be reduced. The gap can also be made small.

≪ Fourth Embodiment &

Next, 4th Embodiment of this invention is described using FIG. 10 or FIG. In the first embodiment and the second embodiment, the heat transfer pipe 4 serving as the single pipe is attached to the concave portion of the unit separator 22. In this fourth embodiment, the inner pipe 41 and the external pipe 42 The heat transfer pipe 4 which has the () is attached to the recessed part 28 of the header 2. As shown in FIG. In addition, in this embodiment, as shown in FIG. 11, when two inner pipes 41 are inscribed in the outer appearance 42 and this expands by the outer appearance 42 also when the inner tube 41 expands by high pressure. In addition to preventing the occurrence of, and to match the respective axis surface.

First, the operation | movement at the time of heat exchange using the heat exchanger tube 4 which has this inner tube 41 and the exterior 42 is demonstrated using FIG. 10, First, when this heat exchanger 1 is used, The first fluid to be subjected to heat exchange is introduced from the inlet port 31a through the first header 2a. At the same time, a second fluid flows in from the inlet port 31b of the second header 2b. Then, the first fluid flowing in from the inlet 31a passes through the gap between the exterior 42 and the inner tube 41, while the second fluid flowing from the inlet 31b passes through the inner tube 41. Heat exchange with the first fluid on the way. In addition, when heat-exchanging using such a heat exchanger tube 4, on the contrary, you may make it the heat-exchange fluid flow into the inner tube 41, and may heat-exchange with the other fluid which passes between the exteriors 42. As shown in FIG. Alternatively, the fluid to be subjected to heat exchange is passed through a ring-shaped gap between the inner tube 41 and the outer tube 42 to exchange heat with the fluid passing through the inner tube 41 and the fluid passing outside the outer tube 42. You may do so.

When the heat exchanger tube 4 is attached to the header of the heat exchanger 1 using such a heat exchanger tube 4, the 1st header 2a which introduce | transmits a 1st fluid between the inner tube 41 and the exterior | side 42 is shown. And second headers 2b for introducing the second fluid only into the inner tube 41.

The structure of this heat exchanger 1 is demonstrated in detail. As shown in FIG. 11, the unit separator 22 of the 1st header 2a of this heat exchanger 1 shows the external appearance of the external appearance 42. FIG. A first wall surface 23 having a first recessed portion 28a divided in half, and a second wall surface (rear surface 26) having a second recessed portion 28b divided in half by the outer shape of the inner tube 41 are provided. One side is opened. At this time, about the dividing surface 20 of the 1st recessed part 28a and the dividing surface 20 of the 2nd recessed part 28b, the axial plane of all the pipes is arranged, and it can be made into the same plane. And similarly to the above embodiment, the pair of unit separators 22 are opposed to each other in the vertical direction, and the second concave portion 28b is sandwiched between the first concave portion 28a and the outer peripheral portion of the outer surface 42. ), Insert the inner tube (41). Thereby, a 1st fluid can be made to pass through the clearance gap between the external appearance 42 and the inner pipe | tube 41 in the header unit 21a of the 1st header 2a.

The header cover 3 is mounted to the header unit 21a configured as described above. In this embodiment, the outer cover 42 and the inner tube 41 protrude from the first wall surface 23 and the rear surface 26 of the header unit 21a, so that the header cover 3 is mounted from the rear side. Can not. Thus, for the header unit 21a of the first header 2a, an opening 27 is formed on the side surface, and the header cover 3 is provided so as to have a predetermined clearance space S from the opening 27. Mount it. As for the header cover 3, as shown in FIG. 8 which is 2nd Embodiment, you may attach only to either side of left and right, or may mount to both sides.

In addition, the unit separator 22 of the 2nd header 2b is comprised similarly to 1st Embodiment (FIG. 2) or 2nd Embodiment (FIG. 7). Since the heat transfer pipe 4 does not protrude on the rear face 26 side of the unit separator 22 of the second header 2b, the header cover 3 can be mounted from the rear face side as in the first embodiment. . Alternatively, the header cover 3 may be mounted on the side surface similarly to the header cover 3 mounted on the first header 2a. In FIG. 10, the state which attached the header cover 3b to the side surface 24 of the 2nd header 2b is shown. In addition, in relation to the present invention, with respect to the unit separator 22 of the second header 2b, the wall surface on the side on which the inner tube 41 is mounted is disposed on the third wall surface and the wall surface opposite to this in the axial direction. It is set as the fourth wall surface (rear).

When manufacturing the heat exchanger 1 comprised in this way, the header unit of the 1st header 2a and the 2nd header 2b is arrange | positioned at the left and right both sides, and the heat exchanger tube 4 is made into the recessed part 28a, in that state. 28b). At this time, the outer surface 42 is inserted into the recess 28a of the first wall surface 23 of the first header 2a, and the rear surface 26 is provided for the inner tube 41 protruding from the outer surface 42. ) Is inserted into the recessed portion 28b and the recessed portion 28 of the second header 2b, and is also inserted into the recessed portion provided on the third wall surface of the second header 2b. In the state where the coaxial heat transfer pipe 4 is mounted in this way, the outer shell 42 and the inner tube 41 are mounted from the top and bottom in the concave portions 28a and 28b which face the other unit separator 22 from the upper surface side. Insert it. Then, in the state where the heat-transfer tube 4 is inserted, the junction part is soldered to seal the gap, and the plurality of header units 21 soldered in this way are stacked in the vertical direction, so that the first header 2a and the second header are laminated. The header cover 3 is attached to the side surface 24 of 2b.

In this way, even when the heat transfer tube 4 consisting of the inner tube 41 and the exterior 42 is mounted on the header 2, the heat transfer tube 4 does not need to be inserted in the same position as the conventional one. The heat transfer pipe 4 can be attached to the header 2 very efficiently.

In addition, this invention is not limited to the said embodiment, It can implement in various forms.

For example, in the said embodiment, although the pair of unit separator 22 was faced up and down, the heat exchanger tube 4 was inserted, but as shown in FIG. 12, the U-shaped recessed part 28 is shown. ), The heat transfer pipe 4 is dropped, and the plate member 210 having a rectangular shape may be mounted on the open portion of the recess 28.

Moreover, in the said embodiment, although the heat exchanger tube 4 was pinched from the top and bottom in the pair of unit separator 22, it is not limited to this, The clearance after attaching the heat exchanger tube 4 is the brazing material 5 A hole may be filled only to hold the heat transfer pipe 4.

In addition, in the said embodiment, when using the coaxial heat exchanger tube 4, the circular thing was used as the external appearance 42, For example, you may use the cross-sectional rectangular shape shown in FIG. In particular, when the outer surface 42 having a rectangular cross section is used in this way, when the two inner tubes 41 are inscribed, three points are supported by the wall surface of the outer tube 42 and the adjacent inner tube 41. The inner tube 41 can be held in the outer shell 42 in a stable state. As for the dimension of this cross-sectional rectangular shape 42, the dimension of one side of an external shape is 0.8 mm-2.0 mm, and the dimension of thickness is about 0.05 mm-0.15 mm.

One … Heat Exchanger 2 ... Header
2a. First header 2b... Second header
21 ... Header unit 22. Unit separator
23 ... First wall surface 24... side
25 ... Bottom 26. back side
26a. Second wall surface 27. Opening
S ... Clearance space 28, 28a, 28b... Concave portion
29. Opening 3. Header cover
31 ... Inlet 32. outlet
4 … Heat pipe 41. shell
42 ... Appearance 5. Brazing material

Claims (6)

In the heat exchanger which consists of two pairs of headers and the heat exchanger tube which consists of an inner tube and an exterior, and heat-exchanges a fluid through the inner tube and an exterior, respectively,
The two pairs of headers,
A pair of first headers for passing the fluid between the outer tube and the inner tube, and a pair of second headers for allowing the fluid to pass through the inner tube,
The first header,
It is comprised by the 1st wall surface which has a split surface divided into the surface parallel to the axial surface of the said heat exchanger tube, and the 2nd wall surface which opposes the said 1st wall surface, and is provided in the split surface of the said 1st wall surface. And a first recess formed in contact with the outer circumference of the exterior, and a second recess formed in the divided surface of the second wall surface and formed in contact with the outer circumference of the inner tube.
The heat exchanger comprised so that it may have a sealing material which seals the clearance gap between a said 1st recessed part and an external appearance, the clearance gap between a 2nd recessed part and an inner pipe | tube, and a divided surface. The method according to claim 1,
The second header,
And having a third wall surface having a dividing surface divided into a plane parallel to the axial surface of the inner tube, and a third concave portion provided on the dividing surface of the third wall surface and formed to contact the outer peripheral portion of the inner tube,
The heat exchanger comprised so that it may have the sealing material which seals the clearance gap and division surface of the said 3rd recessed part and an inner pipe | tube. The method according to claim 1,
The heat exchanger is configured to have two inner tubes inscribed to the outer surface, and an axial surface of the outer tube, an axial surface of the inner tube, a split surface of the first wall surface and a split surface of the second wall surface are the same surface. delete delete delete

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