TW201329413A - Heat exchanger, connection component, and fabricating method of the heat exchanger - Google Patents

Abstract

A heat exchanger, connection component and fabricating method of the heat exchanger, for reducing a pitch between heat pipes and not reducing a pitch between holes of a header wall and avoiding a front end of the heat pipe being protruded from the header wall, are provided. The heat exchanger includes a header wall, having a hole with a diameter smaller than an outer diameter of an end of the heat pipe; and a connection component, connecting the hole of the header wall with the heat pipe. In the heat exchanger, the connection component includes a flange portion, contacting with a surface of the header wall; and a body portion, configured to be protruded from the hole in a situation that the body portion is inserted into the hole of the header wall. And, an outer periphery of the body portion protruded from the hole of the header wall is connected with an inner periphery of the heat pipe so as to make a pitch between the heat pipes smaller than a pitch of the holes.

Description

Heat exchanger, joint, and heat exchanger manufacturing method

The present invention relates to a heat exchanger comprising: a header and a heat pipe; and more particularly, the present invention relates to a heat exchanger including a joint which will be formed on the wall of the header The holes are connected to the heat pipes.

Fig. 9 shows a general structure of a conventional shell and tube type. In Fig. 9, reference numerals 71L and 71R are provided on the left and right headers, and reference numeral 72 is a plurality of heat transfer tubes provided between the header 71L on the left side and the header 71R on the right side. The heat transfer pipe 72 is brazed in a state where the heat transfer pipe 72 is inserted into a hole formed in the right and left header wall surfaces 71W, so that the first fluid that is introduced into the header 71L is in the The inside of the heat pipe 72 flows. Further, reference numeral 73 is an outer casing covering the heat transfer pipe 72 such that the second fluid passes through a partition space surrounded between the outer casing 73 and the right and left header wall surfaces 71W, thereby causing the second fluid and the heat transfer pipe 72 to be inside. The first fluid undergoes heat exchange.

However, in the case where the hole of the header wall surface 71W and the heat transfer pipe 72 are welded as described above, a plurality of holes are formed in the header wall surface 71W by press working or the like, and then the heat transfer pipe 72 is inserted into the house. The hole is drilled and brazed (see Patent Document 1 and Patent Document 2).

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2001-304788

[Patent Document 2] Japanese Patent Laid-Open Publication No. 2003-053522

However, in the case of manufacturing the heat exchanger as described above, if the pitch of the holes of the header wall is to be reduced and the pitch of the heat transfer tubes is reduced, cracks may occur between the holes and the holes. Therefore, in any case, the pitch of the holes of the header wall cannot be reduced. Therefore, the pitch of the heat transfer tubes becomes large, so that the heat exchanger cannot be miniaturized.

Further, when the heat pipe is inserted into the hole of the wall surface of the header and brazed, the brazing material is melted by heating, but this causes a problem that the heat pipe is elongated by the heat and conducts heat. The front end of the tube will protrude from the wall of the header. Therefore, in the other steps, the protruding portion must be cut off.

In addition, there is a problem that if the wall surface of the header is thin, the welding margin of the heat transfer pipe and the hole becomes small, and if the brazing material is not placed around the hole, the fluid is caused. leakage.

Accordingly, the present invention has been made in view of the above problems, and an object of the present invention is to provide a heat exchanger which can reduce a heat transfer tube and heat conduction without reducing a pitch of a hole in a wall surface of a header. The spacing of the tubes is reduced and the front end of the heat pipe is not protruded from the header wall.

That is, in order to solve the problem, the heat exchanger of the present invention includes: a header wall surface having a hole formed with a diameter smaller than an outer diameter of an end portion of the heat transfer pipe; and a coupling member that faces the header wall The holes are connected to the heat pipes. The coupling member includes: a flange portion that is in contact with a surface of the header wall surface; and a hollow trunk portion that is disposed at a hole that is inserted into the wall surface of the header In the state, the outer circumference of the trunk portion protruding from the hole in the wall surface of the header is in contact with the inner circumference of the heat transfer tube.

In this manner, even when the pitch of the holes is relatively large, the heat transfer pipe is inserted into the outer periphery of the trunk portion protruding from the hole of the header wall surface, whereby the pitch between the adjacent heat transfer pipes can be reduced. Further, since the heat transfer pipe is not inserted into the hole of the header wall surface, the end portion of the heat transfer pipe does not protrude from the hole, and there is no need to perform a grinding step of grinding the protruding end portion.

Further, in the invention as described above, a buffer unit is provided between the heat transfer pipe and the wall surface of the header, and the buffer unit is for absorbing the inconsistency of the end portion of the heat transfer pipe.

In this way, when the heat pipe is brazed by heating, the elongation of the heat pipe can be absorbed by the buffer unit, so that the distance between the wall surfaces of the opposing headers can be kept constant. Braze the heat pipe.

Further, the coupling member may be provided with a plurality of trunk portions and one flange portion to which the plurality of trunk portions are coupled.

Further, when the connecting member is used, the pitch of the plurality of heat transfer pipes attached to the wall surface of the header is made smaller than the thickness of the wall surface of the header, whereby the heat exchanger is miniaturized.

Further, the length of the trunk portion of the coupling member is set to be twice or more the thickness of the header wall surface, thereby increasing the brazing region of the heat transfer tube.

Further, a chamfer portion is provided at the trunk portion for smoothly flowing or flowing the fluid, whereby the fluid smoothly flows into the heat transfer tube without surrounding the hole of the collector wall Processing.

Further, a concave portion for absorbing the projection around the hole of the header wall surface is provided on the contact surface side of the flange which is in contact with the header wall surface.

Thus, even when a projection is formed around the hole of the header wall surface due to burrs, deformation, or the like, the projection can be absorbed by the concave portion, so that the entire flange can be brought into contact with the header wall surface.

Further, a slope portion is provided at the front end portion of the trunk portion, and the outer diameter of the slope portion is reduced toward the front end, whereby the heat pipe is easily inserted into the trunk portion.

According to the present invention, the heat exchanger includes: a header wall surface having a hole having a diameter smaller than an outer diameter of an end portion of the heat pipe; and a coupling member that connects the hole of the header wall surface with the heat pipe The connecting member includes: a flange portion that is in contact with a surface of the header wall surface; and a hollow trunk portion that is disposed to protrude from the hole in a state of being inserted into the hole of the header wall surface, from the The outer circumference of the trunk portion where the hole of the header wall protrudes is in contact with the inner circumference of the heat transfer tube. Therefore, even when the pitch of the holes is relatively large, the heat transfer tube is inserted into the outer circumference of the trunk portion protruding from the hole of the header wall surface. Thereby, the spacing between adjacent heat pipes can be reduced. Further, since the heat transfer pipe is not inserted into the hole of the header wall surface, the end portion of the heat transfer pipe does not protrude from the hole, and the grinding step of grinding the protruding end portion is not required.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. The heat exchanger 1 in this embodiment is a shell and tube type heat exchanger 1. As shown in FIG. 1, the heat exchanger 1 includes: a plurality of heat transfer tubes 3 disposed between the left and right headers 2, between the left and right headers 2, and an outer side of the heat transfer tubes 3 The outer casing 4 to be covered, and the like. Further, in terms of characteristics, a plurality of holes 22 are formed in the header wall surface 21 constituting the header 2, and a rivet-like connecting member 6 (refer to FIG. 2) is inserted into the hole 22, from which The heat transfer pipe 3 is inserted into the front end side of the joint member 6 and brazed. Hereinafter, the shell-and-tube type heat exchanger 1 in the present embodiment will be described in detail.

First embodiment

First, the header 2 of the heat exchanger 1 inflows and discharges a first fluid which is a heat exchange target, and the header 2 includes a space surrounded by the header wall surface 21 and the outer casing 4. Further, in the present embodiment, the header 2 is constituted by the header wall surface 21, the header outer wall 25, and the outer casing 4, but it may be provided by a newly provided header cover and the outer casing 4. The header 2 is constructed. Next, the first fluid is caused to flow from the first inflow portion 23 to the header 2 configured as described above, and the heat exchanged first fluid is discharged from the first discharge portion 24 of the header 2 on the other side.

The heat transfer pipe 3 attached to the header wall surface 21 passes through a first fluid flowing in a branch from the header 2, and the heat transfer pipe 3 includes a metal member having a hollow circular cross section. Further, in the case of constituting the heat transfer pipe 3, a spiral unevenness (not shown) may be formed on the inner wall of the heat transfer pipe 3 to secure a contact area between the first fluid and the inner wall of the heat transfer pipe 3. For a large area. Further, in the case where the spiral irregularities are formed in the above manner, when the coil spring is welded to the inner wall of the heat transfer pipe 3, The coil spring is placed in the vicinity of the end in advance. Thereby, when the heat transfer pipe 3 is inserted into the fastener 6 mentioned later, a coil spring does not become an obstacle. Further, on the outer side surface of the heat transfer pipe 3, a baffle plate 5 orthogonal to the axis of the heat transfer pipe 3 is alternately provided, whereby the second fluid is collapsed.

The outer casing 4 covering the outer side of the heat transfer pipe 3 is such that a partition space is formed between the header wall surface 21 on the left side and the header wall surface 21 on the right side, so that the second fluid flows from the second inflow portion 41 provided on one side. When the inflow occurs, the second fluid is smashed by the baffle 5 in the partition space, and the second fluid is discharged from the other second discharge portion 42. The second fluid exchanges heat with the first fluid in the heat pipe 3, for example, in the case of using a high temperature fluid as the first fluid, using a low temperature fluid as the second fluid, and conversely, using a low temperature fluid In the case of the first fluid, a high temperature fluid is used as the second fluid. Furthermore, as shown in FIG. 1, the first fluid and the second fluid may flow in the same direction, that is, the heat exchanger 1 may be formed from the left to the right side of FIG. 1, and may be different from FIG. The heat exchanger 1 is formed in such a manner that the first fluid and the second fluid flow in the opposite direction.

In the configuration described above, the end portion of the heat transfer pipe 3 is attached to the position of the hole 22 of the header wall surface 21 by the joint member 6. As shown in FIG. 2 or FIG. 3, the coupling member 6 is a member in which a flange portion 61 is provided on one end side of the trunk portion 62, and a through hole is formed in the center of the trunk portion 62.

As shown in Fig. 10, the coupling member 6 is formed in a circular shape, and the circular coupling member 6 covers the entire hole 22 in a state where the flange portion 61 is in contact with one surface (first surface 21a) of the header wall surface 21. Covered around. In addition, from The hollow trunk portion 62 that is continuous in the central portion of the flange portion 61 is formed to be in contact with the hole 22 of the header wall surface 21, and the front end is provided from the other surface of the header wall surface 21 (the second surface) 21b) Prominent. Regarding the length (L) of the trunk portion 62, the trunk portion 62 has a length at least twice or more the thickness (D) of the header wall surface 21 in advance so as to be insertable into the end portion of the heat pipe 3 at the trunk portion 62. The brazing portion is surely brazed; and the outer diameter of the trunk portion 62 is set to a size that brings the outer circumference of the trunk portion 62 into contact with the inner circumference of the heat transfer pipe 3.

Next, a method of manufacturing the heat exchanger 1 using the coupling member 6 and the like configured as described above will be described.

First, in the case of manufacturing the shell-and-tube type heat exchanger 1 shown in Fig. 1, a plurality of holes 22 are formed in the header wall surface 21 by press working. In the case where the hole 22 is formed by press working, the hole 22 is previously set to a size that cannot be inserted by the heat transfer pipe 3, and is set to be in contact with the trunk portion 62 of the fastener 6. At this time, it is preferable that the distance between the plurality of heat transfer tubes 3 and the heat transfer tubes 3 attached to the header wall surface 21 (d, the interval between the outer circumferences of the adjacent heat transfer tubes 3) is smaller than the thickness of the header wall surface 21 (D). ). Next, after the hole 22 is formed according to the above-described pitch, the trunk portion 62 of the coupling member 6 is inserted into the hole 22, and the flange portion 61 is brought into contact with the first surface 21a of the header wall surface 21. Further, when the connecting member 6 is attached, a plating layer is applied to the header wall surface 21 in advance, and the contact portion between the flange portion 61 and the header wall surface 21 is welded by melting the plating layer, and Even if the plating is not sufficient for the welding, the brazing material is applied and welded as needed.

Next, after the attachment 6 is attached in the manner described, the trunk portion 62 is inserted into the heat transfer tube 3. At the same time, the connecting member 6 is similarly attached to the header wall surface 21 facing the header wall surface 21, and the front end of the trunk portion 62 is inserted into the heat transfer pipe 3. At this time, the distance between the heat transfer pipe 3 and the heat transfer pipe 3 is smaller than the distance between the hole 22 of the header wall surface 21 and the hole 22 (the interval between the open ends of the adjacent holes 22). That is, conventionally, the heat transfer pipe 3 is inserted in contact with the hole 22 of the header wall surface 21, and therefore, the distance between the hole 22 of the header wall surface 21 and the hole 22 and the distance between the heat transfer pipe 3 and the heat transfer pipe 3 Equally, but in the present embodiment, the inner wall of the heat pipe 3 is located outside the hole 22 of the header wall surface 21, and therefore, the distance between the heat pipe 3 and the heat pipe 3 is smaller than the hole 22 and the hole 22 of the header wall surface 21. spacing.

Further, in a state in which the heat transfer pipe 3 is mounted as described above, the outer casing 4 is attached along the outer peripheral portion of the header wall surface 21, and the contact portion of the outer peripheral portion of the header wall surface 21 with the outer casing 4 is brazed.

Next, the first inflow portion 23 and the first discharge portion 24 are attached to the opening portions on the left and right sides of the outer casing 4, and are formed in the trunk portion of the outer casing 4, that is, surrounded by the outer casing 4 and the left and right header wall surfaces 21. The second inflow portion 41 and the second discharge portion 42 are also attached to the position having the partition space.

Thus, according to the embodiment, the heat exchanger 1 includes: a header wall surface 21 having a hole 22 formed with a diameter smaller than an outer diameter of an end portion of the heat transfer tube 3; and a coupling member 6 that will be the set The hole 22 of the pipe wall surface 21 is coupled to the heat transfer pipe 3, and in the heat exchanger 1, the joint member 6 includes a flange portion 61 that is in contact with the first face 21a side of the header wall surface 21, and a hollow shape The trunk portion 62 is disposed to be inserted into the header wall surface 21 In the state of the hole 22, the hole 22 protrudes from the hole 22 so that the outer circumference of the trunk portion 62 protruding from the hole 22 of the header wall surface 21 comes into contact with the inner circumference of the heat transfer pipe 3, and therefore, even if the pitch of the holes 22 is relatively large In this case, by inserting the trunk portion 62 protruding from the hole 22 of the header wall surface 21 into the heat transfer pipe 3, the distance between the adjacent heat transfer pipes 3 can be reduced. Further, since the heat transfer pipe 3 is not inserted into the hole 22 of the header wall surface 21, the end portion of the heat transfer pipe 3 does not protrude from the hole 22, and the grinding step of grinding the protruding end portion is not required.

Second embodiment

In the heat exchanger according to the present embodiment, a chamfered portion is formed at a boundary portion between the flange portion and the trunk portion of the coupling member, and a taper portion is formed at a tip end of the trunk portion, and between the coupling member and the heat pipe A buffer unit is provided, and is configured in the same manner as the heat exchanger 1 of the first embodiment except for these points. Hereinafter, it demonstrates in detail.

As shown in FIG. 2 or FIG. 3, the coupling member 6 is a member in which a flange portion 61 is provided on one end side of the trunk portion 62, and a through hole is formed in the center of the trunk portion 62. Further, the joint member 6 has a chamfered portion 63 with a curved arc or chamfered at a boundary portion between the flange portion 61 and the trunk portion 62, whereby the resistance when the first fluid flows in or out is reduced. Further, when the flange portion 61 is brought into contact with the header wall surface 21, if a projection is formed around the hole 22 due to burrs, deformation, or the like, the flange portion 61 comes into contact with the projection, resulting in The flange portion 61 cannot be brought into contact with the header wall surface 21. Therefore, as shown in FIG. 4, a recess 61a for forming the header wall surface 21 may be formed in advance on the contact surface side of the flange portion 61 that is in contact with the header wall surface 21, that is, in the vicinity of the outer circumference of the trunk portion 62. The protrusions are absorbed. can The concave portion 61a is formed by thinning the thickness of the flange portion 61. Thereby, even if the periphery of the hole 22 is protruded, the protrusion can be absorbed by the recessed part 61a, and the flange part 61 can be contacted with the header wall surface 21.

On the other hand, the hollow trunk portion 62 continuous from the central portion of the flange portion 61 is formed to be inscribed in the hole 22 of the header wall surface 21, and the front end is formed from the header wall surface 21. The other side (second side 21b) protrudes. Regarding the length (L) of the trunk portion 62, the trunk portion 62 has a length at least twice or more the thickness (D) of the header wall surface 21 in advance so as to be insertable into the end portion of the heat pipe 3 at the trunk portion 62. In the state of being, the brazing is reliably performed, and the outer diameter of the trunk portion 62 is set to a size in which the outer circumference of the trunk portion 62 is in contact with the inner circumference of the heat transfer pipe 3. Further, in order to facilitate the insertion into the heat transfer pipe 3, as shown in FIG. 3, the front end portion of the trunk portion 62 is formed in a sloped shape, and the shape of the slope is a shape in which the front end side of the outer radial direction is slightly reduced. When the front end side is formed in a sloped shape, as shown in FIG. 5(a), for example, only the outer peripheral portion in the vicinity of the front end of the trunk portion 62 may be shaved to form the inclined surface portion 64, or may be As shown in Fig. 5(b), a pressure is applied to the entire front end portion in the center direction, and a slope portion 64 is formed including the inner wall.

Further, in the present embodiment, as shown in FIG. 2, a buffer unit for absorbing the elongation of the heat transfer pipe 3 due to heating is provided on the front end side of the heat transfer pipe 3. The buffer unit may absorb the inconsistency of the front end portion, and the inconsistency of the front end portion is caused by the elongation when the heat transfer tube 3 is brazed. Here, the buffer unit includes: is mounted around the trunk portion 62. The hollow ring member 81 and the like. And by Providing such a hollow ring member 81, when the heat transfer pipe 3 is brazed, even if the heat transfer pipe 3 is elongated, the elongation is absorbed by the hollow ring member 81, thereby The distance between the opposing header wall surface 21 and the header wall surface 21 is kept constant.

Next, a method of manufacturing the heat exchanger 1 using the coupling member 6 and the like configured as described above will be described.

First, in the case of manufacturing the shell-and-tube type heat exchanger 1 shown in Fig. 1, a plurality of holes 22 are formed in the header wall surface 21 by press working. In the case where the hole 22 is formed by press working, the hole 22 is previously set to a size that cannot be inserted by the heat transfer pipe 3, and is set to be in contact with the trunk portion 62 of the fastener 6. At this time, it is preferable that the distance between the plurality of heat transfer tubes 3 and the heat transfer tubes 3 attached to the header wall surface 21 (d, the interval between the outer circumferences of the adjacent heat transfer tubes 3) is smaller than the thickness of the header wall surface 21 (D). ). Next, after the hole 22 is formed according to the above-described pitch, the trunk portion 62 of the coupling member 6 is inserted into the hole 22, and the flange portion 61 is brought into contact with the first surface 21a of the header wall surface 21. At this time, when a protrusion such as a burr or a deformation is generated around the hole 22 of the header wall surface 21, the protrusion is absorbed by the concave portion 61a provided on the back side of the flange portion 61, and the flange is made The portion 61 is in contact with the header wall surface 21. Further, when the connecting member 6 is attached, a plating layer is applied to the header wall surface 21 in advance, and the contact portion between the flange portion 61 and the header wall surface 21 is welded by melting the plating layer, and Even if the plating is not sufficient for the welding, the brazing material is applied and welded as needed.

Next, after the link 6 is mounted in the manner described, the trunk portion 62 is removed. The front end of the hollow ring member 81 is inserted, the front end of the trunk portion 62 protrudes from the second surface 21b side, and then the inclined surface portion 64 of the trunk portion 62 is inserted into the heat transfer pipe 3. At the same time, the connecting member 6 is similarly attached to the header wall surface 21 facing the header wall surface 21, and the ring member 81 and the heat transfer tube 3 are inserted from the front end of the trunk portion 62 to The heat pipe 3 is in contact with the ring member 81. At this time, the distance between the heat transfer pipe 3 and the heat transfer pipe 3 is smaller than the distance between the hole 22 of the header wall surface 21 and the hole 22 (the interval between the open ends of the adjacent holes 22). That is, conventionally, the heat transfer pipe 3 is inserted in contact with the hole 22 of the header wall surface 21, and therefore, the distance between the hole 22 of the header wall surface 21 and the hole 22 and the distance between the heat transfer pipe 3 and the heat transfer pipe 3 Equally, but in the present embodiment, the inner wall of the heat pipe 3 is located outside the hole 22 of the header wall surface 21, and therefore, the distance between the heat pipe 3 and the heat pipe 3 is smaller than the hole 22 and the hole 22 of the header wall surface 21. spacing.

Further, in a state in which the heat transfer pipe 3 is mounted as described above, the outer casing 4 is attached along the outer peripheral portion of the header wall surface 21, and the contact portion of the outer peripheral portion of the header wall surface 21 with the outer casing 4 is brazed.

Next, the first inflow portion 23 and the first discharge portion 24 are attached to the opening portions on the left and right sides of the outer casing 4, and the trunk portion of the outer casing 4 is surrounded by the outer casing 4 and the left and right header wall surfaces 21 to form a partition. The second inflow portion 41 and the second discharge portion 42 are also mounted at the position of the space.

Thus, according to the embodiment, the heat exchanger 1 includes: a header wall surface 21 having a hole 22 formed with a diameter smaller than an outer diameter of an end portion of the heat transfer tube 3; and a coupling member 6 that will be the set The hole 22 of the pipe wall surface 21 is coupled to the heat pipe 3, and in the heat exchanger 1, the joint member 6 is wrapped The flange portion 61 is in contact with the first surface 21a side of the header wall surface 21, and the hollow trunk portion 62 is provided to protrude from the hole 22 in a state of being inserted into the hole 22 of the header wall surface 21. The outer circumference of the trunk portion 62 projecting from the hole 22 of the header wall surface 21 is brought into contact with the inner circumference of the heat transfer tube 3, and therefore, even if the pitch of the holes 22 is relatively large, by the collector wall surface 21 The protruding portion 62 of the hole 22 is inserted into the heat transfer tube 3, so that the spacing between the adjacent heat transfer tubes 3 can be reduced. Further, since the heat transfer pipe 3 is not inserted into the hole 22 of the header wall surface 21, the end portion of the heat transfer pipe 3 does not protrude from the hole 22, and the grinding step of grinding the protruding end portion is not required.

Further, since the buffer unit is provided between the heat transfer pipe and the wall surface of the header, the inconsistency of the end portion of the heat transfer pipe can be absorbed. Further, since the chamfered portion is provided in the trunk portion, the fluid can be smoothly flowed in or out. Further, since the concave portion is provided on the contact surface side of the flange which is in contact with the header wall surface, the projection around the hole of the header wall surface can be absorbed. Further, since the inclined portion is provided at the front end portion of the trunk portion, the outer diameter of the inclined surface portion becomes smaller toward the front end, so that the trunk portion can be easily inserted into the heat transfer tube.

Furthermore, the present invention is not limited to the embodiments described above, and can be implemented in various forms.

For example, in the above embodiment, the flange portion 61 is brought into contact with the first surface 21a side of the header wall surface 21, but as shown in Fig. 6, a flange may be provided on the second surface 21b side of the header wall surface 21. Part 61b. Further, in Fig. 6, reference numeral 62a is a trunk portion that is inserted inwardly with the hole 22 of the header wall surface 21, and reference numeral 62b is inserted in such a manner as to be inscribed with the heat transfer tube 3. The torso. Further, in the case where the flange portion 61b as described above is provided, the flange portion 61b itself may have a function of a buffer unit in advance. In the case where the flange portion 61b itself has the function of the buffer unit as described above, for example, the flange portion 61b may be bent into a U shape to be hollow, whereby the heat pipe can be used. The elongation of the end of 3 is absorbed.

Further, in the above embodiment, the ring member 81 is used as the buffer unit, but the buffer member 82 as shown in Fig. 7 may be used. In Fig. 7, reference numeral 83 is a contact portion where the end portion of the heat transfer pipe is in contact, and reference numeral 84 is a wall surface portion which can press the outer peripheral portion near the end portion of the heat transfer pipe. The contact portion 83 is bent in a V shape with respect to the wall surface portion 84, and as shown in FIG. 7(b), the central portion is pressed by the end portion of the heat transfer tube 3 via a washer 85 or the like. Thereby, the wall surface portion 84 is fastened to the outer peripheral portion of the heat transfer pipe 3. When the cushioning member 82 as described above is used, the outer peripheral portion of the heat transfer pipe 3 can be pressed from the outside by the wall surface portion 84 in a state where the end portion of the heat transfer pipe 3 is not absorbed.

Further, in the above-described embodiment, the buffer unit is provided on the second surface 21b side of the header wall surface 21, but as shown in Fig. 8, the second portion of the header wall surface 21 may be previously provided without providing the ring member 81 or the like. A concave portion 21c is formed around the hole 22 on the surface 21b side, and the end portion of the heat transfer pipe 3 is inserted into the concave portion 21c to absorb the elongation of the heat transfer pipe 3.

Further, in the above embodiment, the end portion of the heat transfer pipe 3 is brought into contact with the ring member 81 as a buffer unit, but the end portion of the heat transfer pipe 3 may be spaced apart from the second face 21b without providing a buffer unit. The heat pipe 3 is welded.

Further, in the above embodiment, the body protruding from the second surface 21b is made The cadre 62 is inserted into the heat transfer pipe 3, but in the case where the header wall surface 21 has pressure resistance, one or a plurality of header wall faces 21 may be prepared in advance, and the trunk portion 62 may be inserted into the header wall surface 21 and performed. Welding, whereby the header wall surface 21 is reinforced.

Further, in the above-described embodiment, one trunk portion 62 is provided for one flange portion 61, but the coupling member 6 may be configured such that one flange portion 61 includes a plurality of trunk portions 62. Further, a plurality of such coupling members 6 may be prepared and attached to the header wall surface 21 to reinforce the header wall surface 21 so that the header wall surface 21 has pressure resistance.

Further, in the above-described embodiment, the shell-and-tube heat exchanger 1 is exemplified, but the heat exchanger 1 not including the outer casing 4 may be applied.

1‧‧‧ heat exchanger

2, 71L, 71R‧‧‧ header

3, 72‧‧‧ Heat pipe

4, 73‧‧‧ shell

5‧‧‧Baffle

6‧‧‧Links

21, 71W‧‧‧ header wall

21a‧‧‧ first side

21b‧‧‧ second side

21c, 61a‧‧‧ recess

22‧‧‧ holes

23‧‧‧ First Inflow

24‧‧‧First Discharge Department

25‧‧‧ header outer wall

41‧‧‧Second inflow

42‧‧‧Second discharge department

61, 61b‧‧‧Flange

62, 62a, 62b‧‧‧body

63‧‧‧Chamfering

64‧‧‧Bevel

81‧‧‧ ring members

82‧‧‧ cushioning members

83‧‧‧Contacts

84‧‧‧ wall face

85‧‧‧shims

D‧‧‧ spacing

D‧‧‧thickness

L‧‧‧ length

Fig. 1 is a schematic view of a heat exchanger according to an embodiment of the present invention.

Fig. 2 is an enlarged view of the vicinity of the header wall surface and the heat transfer pipe in the embodiment.

3 is a view showing a coupling member that connects the header wall surface and the heat transfer pipe in the embodiment.

4 is a view showing a coupling member including a flange portion in which a recessed portion is formed in another embodiment.

5(a) and 5(b) are views showing a coupling member including a trunk portion in which a slope portion is formed in another embodiment.

Fig. 6 is a view showing a coupling member in another embodiment.

Figure 7 (a) and Figure 7 (b) are buffers provided in other embodiments The diagram of the unit.

Fig. 8 is a view in which a buffer unit (a recess is provided in a second surface) provided in another embodiment.

Fig. 9 is a view showing a heat exchanger in a conventional example.

Fig. 10 is an enlarged view of the vicinity of a header wall surface and a heat transfer pipe in an embodiment of the present invention.

3‧‧‧Heat pipe

6‧‧‧Links

21‧‧‧ Collector wall

21a‧‧‧ first side

21b‧‧‧ second side

22‧‧‧ holes

61‧‧‧Flange

62‧‧‧body

63‧‧‧Chamfering

81‧‧‧ ring members

D‧‧‧ spacing

D‧‧‧thickness

L‧‧‧ length

Claims (10)

A heat exchanger comprising: a header wall surface having a hole having a diameter smaller than an outer diameter of an end portion of the heat pipe; and a coupling member that connects the hole of the header wall surface to the heat pipe The heat exchanger is characterized in that the coupling member includes: a flange portion that is in contact with a surface of the header wall surface; and a hollow trunk portion that is disposed in a hole that is inserted into the wall surface of the header In the state of being protruded from the hole, the outer circumference of the trunk portion protruding from the hole of the header wall surface is in contact with the inner circumference of the heat transfer pipe. The heat exchanger according to claim 1, wherein a buffer unit is disposed between the heat pipe and the wall surface of the header, and the buffer unit is configured to inconsistent ends of the heat pipe absorb. The heat exchanger according to claim 1, wherein the connecting member is provided to include: a plurality of trunk portions; and a flange portion connecting the plurality of trunk portions. The heat exchanger according to claim 1, wherein a distance between the plurality of heat transfer tubes mounted on the wall surface of the header is smaller than a thickness of the wall surface of the header. The heat exchanger according to claim 1, wherein the length of the trunk portion of the joint member is set to: the header wall surface More than twice the thickness. The heat exchanger according to claim 1, wherein the trunk portion is provided with a chamfered portion for smoothly flowing or flowing the fluid. The heat exchanger according to claim 1, wherein a concave portion is provided on a side of the contact surface of the flange that is in contact with the wall surface of the header, and the recess is used to hole the wall of the header The surrounding protrusions are absorbed. The heat exchanger according to claim 1, wherein a slope portion is provided at a front end portion of the trunk portion, and an outer diameter of the slope portion becomes smaller toward a front end. A connecting member connecting a wall surface of a heat exchanger and a heat pipe, wherein the connecting member comprises: a flange portion contacting a surface of the wall surface of the header; and a trunk portion inserted into the ratio a hole having a diameter smaller than an outer diameter of the heat pipe and protruding from the hole wall so that a peripheral portion of the trunk portion is in contact with an inner circumference of the heat pipe; The connecting member is: a connecting member of the header wall surface and the heat pipe in the heat exchanger. A method of manufacturing a heat exchanger, comprising: forming a plurality of holes in a wall surface of the header; contacting a flange portion of the joint of the hole mounted on the wall surface of the header with a surface of the wall surface of the header To make the torso continuous from the flange portion a step of protruding from the hole; and a step of abutting the outer peripheral portion of the trunk portion protruding from the hole against the inner circumference of the heat transfer tube and performing brazing.