JP6207724B2 - Header distributor, heat exchanger, air conditioner, and header distributor manufacturing method - Google Patents

Description

  The present invention relates to a header distributor, a heat exchanger, an air conditioner, and a method for manufacturing the header distributor.

  As a conventional header distributor, the first flow path is formed, the bare material is not coated with brazing material on the outer surface, and the second flow channel is formed, and the clad material is coated with brazing material on the outer surface, Some have a plate-like body in which a bare material and a clad material are joined by a brazing material, and a first flow path and a second flow path are connected (see, for example, Patent Document 1).

JP 2008-249241 A (paragraphs [0021] to [0029], FIGS. 2 to 7)

  In the conventional header distributor, since the brazing material between the bare material and the clad material is applied to the periphery of the region of the flow path where the pipe is not inserted, when the brazing material is melted, the brazing material However, it flows into the area of the flow path where the pipe is not inserted, the flow path shape in that area becomes non-uniform, the uniformity of fluid distribution is reduced, and the pressure loss that occurs in the fluid There was a problem that would increase. In addition, since the brazing material on the front and back surfaces of the clad material is applied to the periphery of the region of the flow path where the pipe is inserted, when the brazing material is melted, the brazing material It penetrates into the gap between the region where the tube is inserted and the tube, reaches the end of the tube, flows into the region where the tube is not inserted, and the shape of the channel in that region becomes non-uniform However, there is a problem that the uniformity of fluid distribution is reduced and the pressure loss generated in the fluid is increased.

  The present invention has been made against the background of the above problems, and an object thereof is to obtain a header distributor in which the uniformity of fluid distribution is improved and the pressure loss generated in the fluid is reduced. Moreover, an object of this invention is to obtain the heat exchanger provided with such a header distributor. Moreover, an object of this invention is to obtain the air conditioning apparatus provided with such a heat exchanger. Another object of the present invention is to provide a method of manufacturing a header distributor in which the uniformity of fluid distribution is improved and the pressure loss generated in the fluid is reduced.

A header distributor according to the present invention is a header distributor having a distribution channel that divides an inflowing fluid into two, wherein the first channel is formed and is a first opening that is an end of the first channel. A second region, which is a region having a first region, which is a region having a portion, a bare material, a region where a second channel is formed, and a second opening which is an end portion of the second channel. A first region of the bare material and a second region of the cladding material are joined by a brazing material, and the first flow path and the second flow path are connected to each other. A part of the distribution channel is constituted by the connected first channel and second channel, and the brazing material includes the second opening in the second region. area of the opening of the brazing material is a portion where the brazing material is not coated, so that a large state as compared to the opening area of the first opening, One, so that the larger state as compared to the area of the opening of the base material of the clad material in the second opening, in which is applied.

  In the header distributor according to the present invention, in the second region, the opening area of the brazing material opening in the second opening is larger than the opening area of the first opening. , Applied. Therefore, the molten brazing material flows into the area of the flow path where the pipe is not inserted, penetrates into the gap between the area of the flow path where the pipe is inserted, and reaches the end of the pipe. The flow of the pipe into the region where the pipe is not inserted is suppressed, the flow path shape becomes non-uniform, and the uniformity of the fluid distribution is reduced. An increase in the generated pressure loss is suppressed.

It is a figure which shows the structure of the heat exchanger which concerns on Embodiment 1. FIG. It is a figure for demonstrating the structure of the header distributor of the heat exchanger which concerns on Embodiment 1. FIG. It is a figure for demonstrating the structure of the header distributor of the heat exchanger which concerns on Embodiment 1. FIG. It is a figure for demonstrating the flow of the refrigerant | coolant in a header distributor of the heat exchanger which concerns on Embodiment 1. FIG. It is a figure for demonstrating the detail of the junction part of the bare material and clad material of the heat exchanger which concerns on Embodiment 1. FIG. It is a figure for demonstrating the detail of the junction part of the bare material and clad material of the modification-1 of the heat exchanger which concerns on Embodiment 1. FIG. It is a figure for demonstrating the detail of the junction part of the bare material and clad material of the modification-1 of the heat exchanger which concerns on Embodiment 1. FIG. It is a figure for demonstrating the structure of the header distributor of the modification-2 of the heat exchanger which concerns on Embodiment 1. FIG. It is a figure which shows the structure of the air conditioning apparatus to which the heat exchanger which concerns on Embodiment 1 is applied. It is a figure for demonstrating the structure of the header distributor of the heat exchanger which concerns on Embodiment 2. FIG. It is a figure for demonstrating the structure of the header distributor of the heat exchanger which concerns on Embodiment 2. FIG. It is a figure for demonstrating the flow of the refrigerant | coolant in the header distributor of the heat exchanger which concerns on Embodiment 2. FIG. It is a figure for demonstrating the detail of the junction part of the bare material and clad material of the heat exchanger which concerns on Embodiment 2. FIG. It is a figure for demonstrating the detail of the junction part of the bare material and clad material of the heat exchanger which concerns on Embodiment 2. FIG. It is a figure for demonstrating the detail of the junction part of the bare material and clad material of the modification-1 of the heat exchanger which concerns on Embodiment 2. FIG. It is a figure for demonstrating the structure of the header distributor of the modification-2 of the heat exchanger which concerns on Embodiment 2. FIG. It is a figure for demonstrating the detail of the junction part of the bare material and clad material of the modification-3 of the heat exchanger which concerns on Embodiment 2. FIG.

Hereinafter, a header distributor according to the present invention will be described with reference to the drawings.
In the following, the case where the header distributor according to the present invention is applied to a heat exchanger into which a refrigerant flows is described. However, the header distributor according to the present invention is not limited to other flows into which other fluid flows. It may be applied to equipment. Further, the configuration, operation, and the like described below are merely examples, and are not limited to such configuration, operation, and the like. Moreover, in each figure, the same code | symbol is attached | subjected to the same or similar thing, or attaching | subjecting code | symbol is abbreviate | omitted. Further, the illustration of the fine structure is simplified or omitted as appropriate. In addition, overlapping or similar descriptions are appropriately simplified or omitted.

Embodiment 1 FIG.
The heat exchanger according to Embodiment 1 will be described.
<Configuration of heat exchanger>
Below, the structure of the heat exchanger which concerns on Embodiment 1 is demonstrated.
FIG. 1 is a diagram illustrating a configuration of a heat exchanger according to the first embodiment. In FIG. 1 and subsequent figures, the flow direction of the refrigerant is indicated by a black arrow.

  As shown in FIG. 1, the heat exchanger 1 includes a header distributor 2, a header 3, a plurality of heat transfer tubes 4, and a plurality of fins 5. The header 3 may be the same header as the header distributor 2 or may be a different type of header.

  A distribution flow path 2 a is formed inside the header distributor 2. A refrigerant pipe is connected to the inflow side of the distribution channel 2a. A plurality of heat transfer tubes 4 are connected to the outflow side of the distribution channel 2a. Inside the header 3, a merging channel 3a is formed. A plurality of heat transfer tubes 4 are connected to the inflow side of the merge channel 3a. A refrigerant pipe is connected to the outflow side of the merging channel 3a.

  The heat transfer tube 4 is a circular tube. The heat transfer tube 4 is made of aluminum, for example. A plurality of fins 5 are joined to the heat transfer tube 4. The fin 5 is made of, for example, aluminum. The heat transfer tubes 4 and the fins 5 may be joined by brazing. In addition, in FIG. 1, although the case where the number of the heat exchanger tubes 4 is eight is shown, it is not limited to such a case.

<Flow of refrigerant in heat exchanger>
Below, the flow of the refrigerant in the heat exchanger according to Embodiment 1 will be described.
The refrigerant flowing through the refrigerant pipe flows into the header distributor 2, is distributed through the distribution flow path 2 a, and flows out to the plurality of heat transfer tubes 4. The refrigerant exchanges heat with, for example, air supplied by a fan in the plurality of heat transfer tubes 4. The refrigerant flowing through the plurality of heat transfer tubes 4 flows into the merge flow path 3a of the header 3, merges, and flows out into the refrigerant pipe. The refrigerant can flow backward.

<Configuration of header distributor>
Below, the structure of the header distributor of the heat exchanger which concerns on Embodiment 1 is demonstrated.
2 and 3 are diagrams for explaining the configuration of the header distributor of the heat exchanger according to the first embodiment. FIG. 2 is a perspective view of the header distributor 2 in an exploded state. FIG. 3 is a perspective view of the bare material 12_2 to 12_5 and the clad materials 13_1 to 13_4 drawn together for each set in a state where the header distributor 2 is disassembled.

  As shown in FIG. 2, the header distributor 2 includes a plate-like body 11. The plate-like body 11 is formed by alternately laminating bare materials 12_1 to 12_5 and clad materials 13_1 to 13_4. Hereinafter, the bare materials 12_2 to 12_5 may be collectively referred to as the bare material 12. Hereinafter, the cladding materials 13_1 to 13_4 may be collectively referred to as the cladding material 13.

  The bare material 12_1 and the bare material 12 are made of, for example, aluminum. The brazing material is not applied to the bare material 12_1 and the bare material 12. A brazing material may be applied to a part of the bare material 12_1 and the bare material 12. In the bare material 12_1, a first flow path 12a_1 penetrating the front and back surfaces of the bare material 12_1 is formed. A protrusion 12b is formed on each surface of the bare material 12 (surface on which refrigerant flows in), and each of the bare material 12 has a top surface of the protrusion 12b and a back surface of the bare material 12 (refrigerant flows). The first flow paths 12a_2 to 12a_5 that pass through the surface on the outflow side) are formed. When the bare material 12_1 and the bare material 12 and the clad material 13 are laminated, each of the first flow paths 12a_1 to 12a_5 functions as a part of the distribution flow path 2a. Hereinafter, the first flow paths 12a_2 to 12a_5 may be collectively referred to as the first flow path 12a.

  The clad material 13 is made of aluminum, for example, and is thinner than the bare material 12_1 and the bare material 12. A brazing material is applied to at least the front and back surfaces of the clad material 13. The brazing material may not be applied to part of the front and back surfaces of the clad material 13. In each of the clad materials 13, second flow paths 13a_1 to 13a_4 penetrating the front and back surfaces of the clad material 13 are formed. When the bare material 12_1 and the bare material 12 and the clad material 13 are laminated, each of the second flow paths 13a_1 to 13a_4 functions as a part of the distribution flow path 2a. Hereinafter, the second flow paths 13a_1 to 13a_4 may be collectively referred to as the second flow path 13a.

  A refrigerant pipe is connected to the first flow path 12a_1 formed in the bare material 12_1. The first flow path 12a_1 is, for example, a circular through hole. For example, a base or the like may be provided on the surface side of the bare material 12_1, and the refrigerant pipe may be connected via the base or the like, and the inner peripheral surface of the first flow path 12a_1 is along the outer peripheral surface of the refrigerant pipe. It is a shape, and refrigerant | coolant piping may be directly connected to the 1st flow path 12a_1 without going through a nozzle | cap | die etc.

  Each of the first flow paths 12a_2 to 12a_4 formed in the bare materials 12_2 to 12_4 is a Z-shaped through hole. Each of the protrusions 12b formed on the bare members 12_2 to 12_4 is a shape along the inner peripheral surface of the first flow path 12a_2 to 12a_4, that is, a Z-shaped protrusion. Each of the protrusions 12b may be a protrusion having a shape that does not follow the inner peripheral surface of the first flow paths 12a_2 to 12a_4. When each of the protrusions 12b is a protrusion having a shape along the inner peripheral surface of the first flow path 12a_2 to 12a_4, the bonding area between the bare material 12_2 to 12_4 and the cladding material 13_1 to 13_3 can be increased. It becomes. Each of the second flow paths 13a_1 to 13a_3 formed in the cladding materials 13_1 to 13_3 is a shape along the outer peripheral surface of the protrusion 12b of the bare material 12 laminated on the back surface side, that is, a Z-shaped through hole. And it is one size larger than the outer peripheral surface of the protrusion 12b.

  The heat transfer tube 4 is directly connected to the first flow path 12a_5 formed in the bare material 12_5. The first flow path 12a_5 is a shape along the outer peripheral surface of the heat transfer tube 4, that is, a circular through hole. The protrusion 12b formed on the bare material 12_5 is a protrusion along the inner peripheral surface of the first flow path 12a_5, that is, a circular protrusion. The protrusion 12b may be a protrusion having a shape that does not follow the inner peripheral surface of the first flow path 12a_5. When the protrusion 12b is a protrusion having a shape along the inner peripheral surface of the first flow path 12a_5, the bonding area between the bare material 12_5 and the clad material 13_4 can be increased. The second flow path 13a_4 formed in the clad material 13_4 is a shape along the outer peripheral surface of the protruding portion 12b of the bare material 12_5, that is, a circular through hole, and compared with the outer peripheral surface of the protruding portion 12b. A little bigger. It is preferable that at least one of the thickness and the number of the bare material 12_5 and the clad material 13_4 is changed in accordance with the insertion insertion of the heat transfer tube 4 required. Further, at least one of the inner diameter of the first flow path 12a_5, the outer diameter of the protrusion 12b, and the inner diameter of the second flow path 13a_4 may be changed according to the insertion insertion of the heat transfer tube 4 required.

  As shown in FIG. 3, when the bare material 12_1 and the bare material 12 and the clad material 13 are laminated, the protrusion 12b is inserted inside the second flow paths 13a_1 to 13a_4, and the first flow paths 12a_1 to 12a_1. 12a_5 is communicated.

<Flow of refrigerant in header distributor>
Hereinafter, the flow of the refrigerant in the header distributor of the heat exchanger according to Embodiment 1 will be described.
FIG. 4 is a diagram for explaining the refrigerant flow in the header distributor of the heat exchanger according to the first embodiment. 4 is a development of the perspective view shown in FIG.

  As shown in FIG. 4, the refrigerant that has flowed into the first flow path 12a_1 from the refrigerant pipe flows into the center of the first flow path 12a_2. The refrigerant that has flowed into the center of the first flow path 12a_2 hits the surface of the cladding material 13_2 and branches, and flows into the center of the first flow path 12a_3 from the top and bottom of the first flow path 12a_2. Similarly, the refrigerant that has flowed into the center of the first flow path 12a_3 hits the surface of the cladding material 13_3 and branches, and flows into the center of the first flow path 12a_4 from the upper and lower portions of the first flow path 12a_3. Similarly, the refrigerant that has flowed into the center of the first flow path 12a_4 hits the surface of the cladding material 13_4 and branches, and flows into the heat transfer tube 4 from the upper and lower portions of the first flow path 12a_4 through the first flow path 12a_5. .

  2 to 4 show a case where the first flow paths 12a_2 to 12a_4 are Z-shaped through holes, the header distributor 2 is not limited to such a case. For example, the first flow paths 12a_2 to 12a_4 may be S-shaped through holes. When the first flow paths 12a_2 to 12a_4 are Z-shaped through holes, the refrigerant is branched at the center of the first flow paths 12a_2 to 12a_4, that is, in a linear portion, In the case where the header distributor 2 distributes the refrigerant in a direction that is not perpendicular to the direction of gravity, the uniformity of refrigerant distribution is improved. Further, for example, the first flow paths 12a_2 to 12a_4 may be linear through holes parallel to the direction of gravity. When the first flow paths 12a_2 to 12a_4 are Z-shaped through holes, S-shaped through holes, or the like, the center of the first flow paths 12a_2 to 12a_4, that is, a portion not parallel to the gravity direction In particular, when the header distributor 2 distributes the refrigerant in a direction not perpendicular to the direction of gravity, the uniformity of refrigerant distribution is improved.

  2 to 4 show a case where the distribution flow path 2a repeats branching the inflowing refrigerant into two times, but the header distributor 2 is used in such a case. It is not limited. For example, the distribution channel 2a may be configured to branch the incoming refrigerant into two or more times only once, or to repeat the branching of the incoming refrigerant into three or more times. There may be. In the case where the distribution flow path 2a repeats branching the inflowing refrigerant into two multiple times, the uniformity of refrigerant distribution is improved.

  1 to 4 show a case where the distribution flow path 2a distributes the incoming refrigerant in the step direction, but the header distributor 2 is not limited to such a case. For example, the heat transfer tubes 4 may be arranged in a plurality of rows, and the distribution channel 2a may distribute the refrigerant flowing in the step direction and the column direction. The first flow path 12a may be arranged in parallel with one bare material 12, or may be divided into a plurality of bare materials 12 and arranged in parallel. Further, the second flow path 13a may be arranged in parallel with one clad material 13, or may be divided into a plurality of clad materials 13 and arranged in parallel.

<Details of joint between bare material and clad material>
Below, the detail of the junction part of the bare material and clad material of the heat exchanger which concerns on Embodiment 1 is demonstrated.
FIG. 5 is a diagram for explaining details of a joint portion between the bare material and the clad material in the heat exchanger according to the first embodiment. 5 is a cross-sectional view taken along line A1-A1, line B1-B1, line B2-B2, and line B3-B3 in FIG. The header distributor 2 is not limited to a case where all of the A1-A1 line, the B1-B1 line, the B2-B2 line, and the B3-B3 line in FIG. 3 have cross sections as shown in FIG. FIG. 5 shows a state before the brazing material 13c is melted.

  As shown in FIG. 5, the protrusion 12 b is formed in the first region 12 r of the bare material 12 where the brazing material is not applied. The first flow path 12a is formed so as to penetrate the top surface 12c of the protrusion 12b and the back surface of the bare material 12, and the first opening 12o is formed on the top surface 12c side. A second flow path 13 a is formed in the second region 13 r of the cladding material 13, which is a region where the brazing material 13 c is applied, so as to penetrate the front and back surfaces of the cladding material 13. A second opening 13o is formed on the side. The second opening portion 13o includes an opening portion 13ob of the base material 13b of the clad material 13 and an opening portion 13oc of the brazing material 13c. A brazing material 13c may be applied to the inner peripheral surface of the second flow path 13a.

  The plate thickness of the bare material 12 is T1, the plate thickness of the clad material 13 is T2, the plate thickness of the base material 13b of the clad material 13 is T2b, the thickness of the brazing material 13c applied to the base material 13b is T2c, and the bare material 12 The projecting height of the projecting part 12b formed on the bare material 12_5 is H0, the outer diameter of the projecting part 12b formed on the bare material 12_5 is D0, the width of the projecting part 12b formed on the bare material 12_2 to 12_4 is W0, and the bare material 12_5 The inner diameter of the first flow path 12a_5 formed in D1 is D1, the width of the first flow paths 12a_2 to 12a_4 formed in the bare material 12_2 to 12_4 is W1, and the inner diameter of the second flow path 13a_4 formed in the cladding material 13_4 is The width of the second flow paths 13a_1 to 13a_3 formed in D2 and the cladding materials 13_1 to 13_3 is W2.

  In order to secure the adhesion between the first region 12r and the second region 13r while reducing the amount of brazing material 13c used, the brazing material 13c has a thickness T2c of 30% or less of the plate thickness T2b. Applied.

  In order to insert and connect the heat transfer tube 4 to the first flow path 12a_5, the first flow path 12a_5 is formed so that the inner diameter D1 is larger than the outer diameter of the heat transfer pipe 4.

  When the bare material 12 and the clad material 13 are laminated, the second flow path 13a has an inner diameter D2 or a width W2 so that the protrusion 12b protrudes inside the second flow path 13a. The portion 12b is formed to be larger than the outer diameter D0 or the width W0. That is, in the state before the brazing material 13c is melted and the first region 12r and the second region 13r are joined, the brazing material 13c applied to the back side of the cladding material 13 is the brazing material in the second opening 13o. The material 13c is applied so that the opening area of the opening 13oc is larger than the opening area of the first opening 12o. Therefore, when the brazing material 13c applied to the back side of the clad material 13 melts, the protrusion 12b is formed between the opening 13oc of the brazing material 13c in the second opening 13o and the first opening 12o. Will be interposed.

  Similarly, the brazing material 13c applied to the surface side of the cladding material 13 is applied so that the opening area of the opening of the brazing material 13c is larger than the opening area of the first opening 12o. . The opening area of the brazing material 13 c is applied so that the opening area of the brazing material 13 c is larger than the opening area of the bare material 12 </ b> _ <b> 1 laminated on the front surface side of the clad material 13 and the opening side of the back surface side of the bare material 12. . Therefore, even when the brazing material 13c applied to the surface side of the clad material 13 is melted, the wall surface of the protrusion 12b is interposed between the opening of the brazing material 13c and the first opening 12o. It will be. Further, between the opening of the brazing material 13c and the opening on the back side of the bare material 12_1 and the bare material 12 laminated on the front surface side of the cladding material 13, the wall surface of the protrusion 12b is interposed. Become. The opening of the brazing material 13c applied to the surface side of the clad material 13 also corresponds to the “opening of the brazing material in the second opening” in the present invention. The bare material 12_1 laminated on the front surface side of the clad material 13 and the opening on the back surface side of the bare material 12 also correspond to the “first opening” in the present invention.

  In order to ensure the bonding between the clad material 13 and the bare material 12_1 and the bare material 12 laminated on the surface side of the clad material 13, the projecting height H0 of the projecting portion 12b is equal to or less than the plate thickness T2. Formed.

<Operation of heat exchanger>
Below, the effect | action of the heat exchanger which concerns on Embodiment 1 is demonstrated.
In the header distributor 2, in the state before the brazing material 13c is melted and the first region 12r and the second region 13r are joined, the brazing material 13c is the opening 13oc of the brazing material 13c in the second opening 13o. Is applied so that the opening area becomes larger than the opening area of the first opening 12o. Therefore, when the brazing material 13c melts, the wall surface of the protrusion 12b is interposed between the opening 13oc of the brazing material 13c in the second opening 13o and the first opening 12o. The molten brazing material 13c flows into a region of the distribution flow path 2a where the heat transfer tube 4 is not inserted, and the gap between the region of the distribution flow channel 2a where the heat transfer tube 4 is inserted and the heat transfer tube 4 So that the end of the heat transfer tube 4 penetrates into the region where the heat transfer tube 4 of the distribution flow channel 2a is not inserted, and the flow channel shape of the distribution flow channel 2a is not improved. It becomes uniform and it is suppressed that the uniformity of distribution of a refrigerant | coolant falls. Moreover, it is suppressed that the pressure loss which arises in a refrigerant | coolant increases.

  In addition, since the brazing material 13c is less likely to enter the distribution flow path 2a, the joining of the bare material 12_1 and the bare material 12 to the cladding material 13 of the header distributor 2 is ensured, and the header distributor 2 Reliability is improved. Further, since the brazing material 13c is less likely to enter the distribution flow path 2a, the brazing material 13c is prevented from flowing into the heat transfer tube 4, and the flow path shape of the heat transfer tube 4 becomes uneven. A decrease in heat exchange efficiency of the heat exchanger 1 and an increase in pressure loss generated in the refrigerant are suppressed. In addition, it is possible to reduce the necessity of taking other measures to suppress the flow of the brazing material 13c into the heat transfer tube 4 and to prevent the flow path of the heat transfer tube 4 from being blocked. Reduced.

  Further, in the header distributor 2, the distribution channel 2a is a plate material (bearing material 12_1 and bare material 12, on which partial channels (first channel 12a_1 and first channel 12a, second channel 13a) are formed. The clad material 13) is formed by laminating. Therefore, in spite of the header distributor 2 in which the uniformity of refrigerant distribution is improved and the pressure loss generated in the refrigerant is reduced, the change in the number of branches in the refrigerant partial flow path can be changed. The header distributor 2 can be easily realized, that is, the thickness of the header distributor 2 can be easily changed, so that the versatility of the header distributor 2 is improved. In addition, the distribution number of the header distributor 2 can be easily changed by increasing / decreasing the number of plate members in spite of the header distributor 2 having improved uniformity of refrigerant distribution and reduced pressure loss generated in the refrigerant. Therefore, the versatility of the header distributor 2 is improved. Further, in spite of the header distributor 2 in which the uniformity of the refrigerant distribution is improved and the pressure loss generated in the refrigerant is reduced, the change in the insertion temperature of the heat transfer tube 4 can be changed by increasing or decreasing the number or thickness of the plate members. Therefore, the heat transfer tube 4 is reliably joined, and the reliability of the heat exchanger 1 is improved.

  Further, in the header distributor 2, the distribution channel 2a is a plate material (bearing material 12_1 and bare material 12, clad material) in which holes (first channel 12a_1, first channel 12a, and second channel 13a) are formed. 13) is laminated. Therefore, although the header distributor 2 has improved uniformity of refrigerant distribution and reduced pressure loss generated in the refrigerant, the shape of the partial flow path is complicated, and the refrigerant distribution in the header distributor 2 is improved. Further improvement of the uniformity of the header distributor 2 can be easily realized by changing the shape of the hole, so that the versatility of the header distributor 2 is improved.

<Modification-1>
6 and 7 are diagrams for explaining the details of the joint portion between the bare material and the clad material in Modification 1 of the heat exchanger according to Embodiment 1. FIG. 6 and 7 are cross-sectional views taken along lines A1-A1, B1-B1, B2-B2, and B3-B3 in FIG. When the header distributor 2 has cross sections as shown in FIGS. 6 and 7 in all of the A1-A1, B1-B1, B2-B2 and B3-B3 lines in FIG. It is not limited. 6 and 7 show a state before the brazing material 13c is melted.

  As shown in FIG. 6, in the state before the brazing material 13c is melted, the brazing material 13c has a gap S formed between the outer peripheral surface of the protrusion 12b and the inner peripheral surface of the second flow path 13a. As applied. The gap S functions as a buffer for the leaked brazing material 13c. By forming the gap S, the brazing material 13c applied around the distribution channel 2a is reduced, and the brazing material 13c is further prevented from entering the distribution channel 2a. Further, the fillet of the brazing material 13 c is formed in the gap S, and the reliability of joining the bare material 12 and the clad material 13 is improved. The width of the gap S may be set according to the amount, material, etc. of the brazing material 13c. If the width of the gap S is too large, the adhesiveness between the bare material 12 and the clad material 13 around the distribution flow path 2a is insufficient, so the gap S ≦ 2 mm is preferable.

  Further, as shown in FIG. 7, in a state before the brazing material 13c is melted, the brazing material 13c has a protrusion 12b between the outer peripheral surface of the protrusion 12b and the inner peripheral surface of the second flow path 13a. It is applied so as to form a gap S that becomes narrower as it approaches the root. With such a configuration, it is ensured that a fillet is formed around the base of the protrusion 12b, and the reliability of the joining of the bare material 12 and the clad material 13 is further improved. . Note that the gap S may be a gap in which the amount of narrowing gradually decreases as it approaches the base of the protrusion 12b. With such a configuration, it is further ensured that the fillet is formed around the base of the protrusion 12b, and the reliability of the joining of the bare material 12 and the clad material 13 is further improved. The

  When the fitting part other than the fitting part of the protrusion 12b and the 2nd flow path 13a is formed in the header divider | distributor 2, as shown in FIG.6 and FIG.7 in the fitting part A gap S may be formed. Even in such a case, the bonding reliability between the bare material 12 and the clad material 13 is improved.

<Modification-2>
FIG. 8 is a diagram for explaining the configuration of the header distributor in Modification-2 of the heat exchanger according to Embodiment 1. FIG. 8 is a perspective view of the header distributor 2 in an exploded state.

  As shown in FIG. 8, the heat transfer tube 4 is a flat tube in which a plurality of flow paths are formed in a row. In such a case, the inner surface of the first flow path 12a_5 formed in the bare material 12_5, the outer peripheral surface of the protrusion 12b formed in the bare material 12_5, and the second flow formed in the cladding material 13_4. The inner peripheral surface of the path 13a_4 is flat.

  In the header distributor 2, the distribution channel 2a is a plate material (bearing material 12_1, bare material 12, and cladding material 13) in which holes (first channel 12a_1, first channel 12a, and second channel 13a) are formed. It is formed by laminating. Therefore, even though the header distributor 2 is improved in the uniformity of refrigerant distribution and the pressure loss generated in the refrigerant is reduced, the heat transfer tube 4 having a complicated outer peripheral surface is adopted. This can be easily realized by changing the shape. In addition, in a plurality of types of heat exchangers 1 that employ heat transfer tubes 4 having different outer peripheral surface shapes, it is possible to share some members (bearing materials 12_1 to 12_4 and cladding materials 13_1 to 13_3). Thus, the manufacturing cost is reduced.

<Usage of heat exchanger>
Below, an example of the usage aspect of the heat exchanger which concerns on Embodiment 1 is demonstrated.
In addition, below, although the case where the heat exchanger which concerns on Embodiment 1 is used for an air conditioning apparatus is demonstrated, it is not limited to such a case, The heat exchanger which concerns on Embodiment 1 is For example, you may use for the other refrigerating-cycle apparatus which has a refrigerant | coolant circulation circuit. Moreover, although the case where the air conditioner switches between the cooling operation and the heating operation is described, it is not limited to such a case, and the air conditioner performs only the cooling operation or the heating operation. There may be.

  FIG. 9 is a diagram illustrating a configuration of an air-conditioning apparatus to which the heat exchanger according to Embodiment 1 is applied. In FIG. 9, the flow direction of the refrigerant during the cooling operation is indicated by a solid arrow, and the flow direction of the refrigerant during the heating operation is indicated by a dotted arrow.

  As shown in FIG. 9, the air conditioner 51 includes a compressor 52, a four-way valve 53, a heat source side heat exchanger 54, a throttle device 55, a load side heat exchanger 56, and a heat source side fan 57. , A load-side fan 58 and a control device 59. The compressor 52, the four-way valve 53, the heat source side heat exchanger 54, the expansion device 55, and the load side heat exchanger 56 are connected by refrigerant piping to form a refrigerant circulation circuit.

  For example, a compressor 52, a four-way valve 53, a throttle device 55, a heat source side fan 57, a load side fan 58, various sensors, and the like are connected to the control device 59. By switching the flow path of the four-way valve 53 by the control device 59, the cooling operation and the heating operation are switched. The heat source side heat exchanger 54 acts as a condenser during the cooling operation, and acts as an evaporator during the heating operation. The load side heat exchanger 56 acts as an evaporator during the cooling operation, and acts as a condenser during the heating operation.

The flow of the refrigerant during the cooling operation will be described.
The high-pressure and high-temperature gas refrigerant discharged from the compressor 52 flows into the heat source side heat exchanger 54 via the four-way valve 53 and condenses by heat exchange with the outside air supplied by the heat source side fan 57. It becomes a high-pressure liquid refrigerant and flows out of the heat source side heat exchanger 54. The high-pressure liquid refrigerant flowing out of the heat source side heat exchanger 54 flows into the expansion device 55 and becomes a low-pressure gas-liquid two-phase refrigerant. The low-pressure gas-liquid two-phase refrigerant flowing out of the expansion device 55 flows into the load-side heat exchanger 56 and evaporates by heat exchange with the indoor air supplied by the load-side fan 58, thereby causing a low-pressure gas state. And flows out of the load-side heat exchanger 56. The low-pressure gaseous refrigerant flowing out from the load-side heat exchanger 56 is sucked into the compressor 52 through the four-way valve 53.

The flow of the refrigerant during the heating operation will be described.
The high-pressure and high-temperature gas refrigerant discharged from the compressor 52 flows into the load-side heat exchanger 56 through the four-way valve 53 and condenses by heat exchange with the indoor air supplied by the load-side fan 58. And becomes a high-pressure liquid refrigerant and flows out of the load-side heat exchanger 56. The high-pressure liquid refrigerant flowing out of the load-side heat exchanger 56 flows into the expansion device 55 and becomes a low-pressure gas-liquid two-phase refrigerant. The low-pressure gas-liquid two-phase refrigerant that flows out of the expansion device 55 flows into the heat source side heat exchanger 54 and evaporates by heat exchange with the outside air supplied by the heat source side fan 57, so that the low-pressure gas state It becomes a refrigerant and flows out of the heat source side heat exchanger 54. The low-pressure gaseous refrigerant flowing out from the heat source side heat exchanger 54 is sucked into the compressor 52 through the four-way valve 53.

  The heat exchanger 1 is used for at least one of the heat source side heat exchanger 54 and the load side heat exchanger 56. The heat exchanger 1 is connected so that the refrigerant flows in from the header distributor 2 and the refrigerant flows out from the header 3 when the heat exchanger 1 acts as an evaporator. That is, when the heat exchanger 1 acts as an evaporator, a gas-liquid two-phase refrigerant flows from the refrigerant pipe to the header distributor 2, and a gas-state refrigerant flows from the heat transfer pipe 4 to the header 3. Further, when the heat exchanger 1 acts as a condenser, a gaseous refrigerant flows into the header 3 from the refrigerant pipe, and a liquid refrigerant flows into the header distributor 2 from the heat transfer pipe 4.

  Since the header distributor 2 has a configuration in which the uniformity of the refrigerant distribution is improved, even if a gas-liquid two-phase refrigerant, which is relatively difficult to uniformly distribute, flows into each of the plurality of heat transfer tubes 4. It is possible to make the flow rate and dryness of the refrigerant flowing out uniform. That is, the header distributor 2 is suitable for a refrigeration cycle apparatus such as the air conditioner 51.

Embodiment 2. FIG.
A heat exchanger according to Embodiment 2 will be described.
Note that description overlapping or similar to that in Embodiment 1 is appropriately simplified or omitted.

<Configuration of header distributor>
Below, the structure of the header distributor of the heat exchanger which concerns on Embodiment 2 is demonstrated.
10 and 11 are diagrams for explaining the configuration of the header distributor of the heat exchanger according to the second embodiment. FIG. 10 is a perspective view of the header distributor 2 in an exploded state. FIG. 11 is a perspective view of the bare material 12_2 to 12_5 and the clad materials 13_1 to 13_4 drawn together for each set in a state where the header distributor 2 is disassembled.

  As shown in FIG. 10, the first flow path 12a_1 penetrating the front and back surfaces of the bare material 12_1 is formed in the bare material 12_1. Each of the bare members 12 is not formed with the protrusions 12b, and the first flow paths 12a penetrating the front and back surfaces of the bare member 12 are formed. In addition, a second flow path 13 a penetrating the front and back surfaces of the clad material 13 is formed in each clad material 13.

  Each of the first flow paths 12a_2 to 12a_4 formed in the bare materials 12_2 to 12_4 is a Z-shaped through hole. Each of the second flow paths 13a_1 to 13a_3 formed in the cladding materials 13_1 to 13_3 has a shape along the inner peripheral surface of the first flow paths 12a_2 to 12a_4 formed in the bare materials 12_2 to 12_4 laminated on the back surface side, That is, it is a Z-shaped through hole and has a size substantially equal to the inner peripheral surface thereof.

  The first flow path 12a_5 formed in the bare material 12_5 is a shape along the outer peripheral surface of the heat transfer tube 4, that is, a circular through hole. The second flow path 13a_4 formed in the cladding material 13_4 is a shape along the inner peripheral surface of the first flow path 12a_5 formed in the bare material 12_5, that is, a circular through hole, and the inner peripheral surface thereof. Is approximately the same size.

  As shown in FIG. 11, when the bare material 12_1 and the bare material 12 and the clad material 13 are laminated, the first flow paths 12a_1 to 12a_5 and the second flow paths 13a_1 to 13a_4 communicate with each other.

<Flow of refrigerant in header distributor>
Below, the flow of the refrigerant in the header distributor of the heat exchanger according to the second embodiment will be described.
FIG. 12 is a diagram for explaining the refrigerant flow in the header distributor of the heat exchanger according to the second embodiment. FIG. 12 is a developed view of the perspective view shown in FIG.

  As shown in FIG. 12, the refrigerant that has flowed into the first flow path 12a_1 from the refrigerant pipe flows into the centers of the first flow path 12a_2 and the second flow path 13a_1. The refrigerant that has flown into the centers of the first flow path 12a_2 and the second flow path 13a_1 hits the surface of the cladding material 13_2 and branches, and the first flow path 12a_3 and the first flow path 12a_2 from the upper and lower portions of the first flow path 12a_2 and the second flow path 13a_1 It flows into the center of the second flow path 13a_2. Similarly, the refrigerant that has flown into the centers of the first flow path 12a_3 and the second flow path 13a_2 hits the surface of the clad material 13_3 and branches from the upper and lower portions of the first flow path 12a_3 and the second flow path 13a_2. It flows into the center of the path 12a_4 and the second flow path 13a_3. Similarly, the refrigerant that has flown into the centers of the first flow path 12a_4 and the second flow path 13a_3 hits the surface of the cladding material 13_4 and branches, and the first flow from the upper and lower portions of the first flow path 12a_4 and the second flow path 13a_3. It flows into the heat transfer tube 4 through the path 12a_5 and the second flow path 13a_4.

<Details of joint between bare material and clad material>
Below, the detail of the junction part of the bare material and clad material of the heat exchanger which concerns on Embodiment 2 is demonstrated.
FIGS. 13 and 14 are diagrams for explaining details of a joint portion between the bare material and the clad material in the heat exchanger according to the second embodiment. 13 is a cross-sectional view taken along line A1-A1, line B1-B1, line B2-B2, and line B3-B3 in FIG. The header distributor 2 is not limited to the case where the A1-A1 line, the B1-B1 line, the B2-B2 line, and the B3-B3 line in FIG. 11 have cross sections as shown in FIG. FIG. 13 shows a state before the brazing material 13c is melted. FIG. 14 shows an example of the manufacturing process of the exposed portion 13d of the cladding material 13_3. The same applies to an example of a manufacturing process of the exposed portion 13d of the cladding materials 13_1, 13_2, and 13_4.

  As shown in FIG. 13, a first flow path 12a is formed in the first region 12r of the bare material 12 where the brazing material is not applied so as to penetrate the front and back surfaces of the bare material 12. A first opening 12 o is formed on the surface side of the material 12. A second flow path 13 a is formed in the second region 13 r of the cladding material 13, which is a region where the brazing material 13 c is applied, so as to penetrate the front and back surfaces of the cladding material 13. A second opening 13o is formed on the side. The second opening portion 13o includes an opening portion 13ob of the base material 13b of the clad material 13 and an opening portion 13oc of the brazing material 13c.

  The plate thickness of the bare material 12 is T1, the plate thickness of the clad material 13 is T2, the plate thickness of the base material 13b of the clad material 13 is T2b, the thickness of the brazing material 13c applied to the base material 13b is T2c, and the bare material 12_5 The first flow path 12a_5 formed on the inner surface is D1, the width of the first flow paths 12a_2 to 12a_4 formed on the bare materials 12_2 to 12_4 is W1, and the second flow path is formed on the base material 13b of the clad material 13_4. The inner diameter of 13a_4 is D2b, the inner diameter of the second flow path 13a_4 formed in the brazing material 13c of the clad material 13_4 is D2c, and the width of the second flow paths 13a_1 to 13a_3 formed in the base material 13b of the clad material 13_1 to 13_3. The width of the second flow paths 13a_1 to 13a_3 formed in the brazing material 13c of W2b and the clad materials 13_1 to 13_3 is defined as W2c.

  In order to secure the adhesion between the first region 12r and the second region 13r while reducing the amount of brazing material 13c used, the brazing material 13c has a thickness T2c of 30% or less of the plate thickness T2b. Applied.

  The clad material 13 is formed such that the inner diameter D2c or the width W2c is larger than the inner diameter D2b or the width W2b before the brazing material 13c is melted. That is, in the state before the brazing material 13c is melted and the first region 12r and the second region 13r are joined, the brazing material 13c applied to the back side of the cladding material 13 is the brazing material in the second opening 13o. The opening area of the opening 13oc of the material 13c is larger than the opening area of the first opening 12o, and the opening area of the opening 13oc of the brazing material 13c in the second opening 13o is the base in the second opening 13o. It is applied so as to be larger than the opening area of the opening 13ob of the material 13b. And the exposed part 13d of the base material 13b is formed between the internal peripheral surface of the 2nd flow path 13a in the brazing material 13c, and the internal peripheral surface of the 2nd flow path 13a in the base material 13b, and 2nd area | region 13r. The surface of the brazing material 13c is in a state closer to the first region 12r than the surface of the exposed portion 13d of the base material 13b. Therefore, there is a gap between the opening 13oc of the brazing material 13c in the second opening 13o and the first opening 12o in a state before the brazing material 13c applied to the back side of the clad material 13 is melted. S intervenes.

  Similarly, the brazing material 13c applied to the front surface side of the clad material 13 has a bare material 12_1 whose opening area of the brazing material 13c is laminated on the front surface side of the clad material 13 and the back surface side of the bare material 12 It is applied so that the opening area of the opening portion of the brazing material 13c is larger than the opening area of the opening portion of the base material 13b. Therefore, even when the brazing material 13c applied to the front surface side of the cladding material 13 melts, the opening of the brazing material 13c and the back surface side of the bare material 12_1 and the bare material 12 laminated on the front surface side of the cladding material 13 A gap S is interposed between the two openings. The opening of the brazing material 13c applied to the surface side of the clad material 13 also corresponds to the “opening of the brazing material in the second opening” in the present invention. The bare material 12_1 laminated on the front surface side of the clad material 13 and the opening on the back surface side of the bare material 12 also correspond to the “first opening” in the present invention.

  As shown in FIG. 14, the exposed portion 13 d is preferably formed by removing the brazing material 13 c around the second opening portion 13 o by cutting or the like. Further, the exposed portion 13d may be formed by using a mask or the like when printing the brazing material 13c. The width of the exposed portion 13d may be set according to the amount, material, etc. of the brazing material 13c.

<Operation of heat exchanger>
Below, the effect | action of the heat exchanger which concerns on Embodiment 2 is demonstrated.
In the header distributor 2, in the state before the brazing material 13c is melted and the first region 12r and the second region 13r are joined, the brazing material 13c is the opening 13oc of the brazing material 13c in the second opening 13o. The opening area of the first opening 12o is larger than the opening area of the first opening 12o, and the opening area 13oc of the brazing material 13c in the second opening 13o is the opening 13ob of the base material 13b in the second opening 13o. It is applied so as to be larger than the opening area. Therefore, when the brazing material 13c is melted, a gap S is interposed between the opening 13oc of the brazing material 13c in the second opening 13o and the first opening 12o, so that the melted brazing The material 13c flows into a region of the distribution channel 2a where the heat transfer tube 4 is not inserted, and soaks into the gap between the region of the distribution channel 2a where the heat transfer tube 4 is inserted and the heat transfer tube 4. Reaching the end of the heat transfer tube 4 and flowing into a region of the distribution channel 2a where the heat transfer tube 4 is not inserted is suppressed.

  Further, the fillet of the brazing material 13c is formed in the gap S, so that the reliability of the joining of the bare material 12 and the clad material 13 is improved, and the reliability of the header distributor 2 is improved.

  Further, the amount of the brazing material 13c used is reduced by the amount of the exposed portion 13d formed in the clad material 13, and the header distributor 2 is reduced in cost.

  In addition, since the header distributor 2 with improved uniformity of refrigerant distribution and reduced pressure loss generated in the refrigerant can be obtained without complicating the shape of the bare member 12, the header distributor 2 can be manufactured. Costs are reduced.

  In the second region 13r, the surface of the brazing material 13c is closer to the first region 12r than the surface of the exposed portion 13d of the base material 13b. Therefore, the reliability of the header distributor 2 is improved.

<Modification-1>
FIG. 15 is a diagram for explaining details of a joint portion between the bare material and the clad material in Modification Example 1 of the heat exchanger according to Embodiment 2. In addition, in FIG. 15, the shape of the exposed part 13d of the clad material 13_3 is shown. The same applies to the shape of the exposed portion 13d of the cladding materials 13_1, 13_2, and 13_4.

  As shown in FIG. 15, in the brazing material 13c, the width of the exposed portion 13d in a region near the periphery of the cladding material 13 in the second opening 13o is equal to the periphery of the cladding material 13 in the second opening 13o. It is applied so as to be smaller than the width of the exposed portion 13d in the far region. That is, the width of the exposed portion 13d in a region near the periphery of the cladding material 13 in the second opening 13o is compared with the width of the exposed portion 13d in a region far from the periphery of the cladding material 13 in the second opening 13o. As a result, it becomes a small value of 0 or more. With such a configuration, the reliability of the bonding between the bare material 12 and the clad material 13 in the region where there is little adhesion is improved. Similarly, the width of the exposed portion 13d may be reduced in other areas where there is little adhesion.

  In particular, when the second flow path 13a has a shape having the bent portion 13e, the width of the exposed portion 13d of the brazing material 13c in the region near the bent portion 13e in the second opening 13o is the second opening. It is good to apply so that it may become small compared with the width of the exposed portion 13d in the region far from the bent portion 13e of the portion 13o. That is, the width of the exposed portion 13d in the region near the bent portion 13e in the second opening 13o is smaller than the width of the exposed portion 13d in the region far from the bent portion 13e in the second opening 13o. It becomes the above value. In the bent portion 13e, stagnation occurs due to the flow of the refrigerant. Therefore, the melted brazing material 13c flows into the bent portion 13e, and a fillet of the brazing material 13c is formed in the bent portion 13e. However, the influence exerted on the uniformity of the refrigerant distribution of the header distributor 2 is small. Therefore, it is effective that priority is given to the improvement of the reliability of the joining of the bare material 12 and the clad material 13 with such a configuration.

  In addition, when a plurality of second openings 13o are formed in one clad material 13, the brazing material 13c is formed in the exposed portion 13d in a region close to the other second openings 13o in the second openings 13o. It is applied so that the width is smaller than the width of the exposed portion 13d in a region far from the other second opening 13o in the second opening 13o. That is, the width of the exposed portion 13d in the region close to the other second opening portion 13o in the second opening portion 13o is equal to the exposed portion 13d in the region far from the other second opening portion 13o in the second opening portion 13o. It becomes a value of 0 or more which is smaller than the width of. With such a configuration, the reliability of the bonding between the bare material 12 and the clad material 13 in the region where there is little adhesion is improved.

<Modification-2>
FIG. 16 is a diagram for explaining a configuration of a header distributor in Modification-2 of the heat exchanger according to Embodiment 2. FIG. 16 is a perspective view of the header distributor 2 in an exploded state.

  As shown in FIG. 16, the heat transfer tube 4 is a flat tube in which a plurality of flow paths are formed in a row. In such a case, the inner peripheral surface of the first flow path 12a_5 formed in the bare material 12_5 and the inner peripheral surface of the second flow path 13a_4 formed in the clad material 13_4 are flat.

<Modification-3>
FIG. 17 is a diagram for explaining details of a joint portion between a bare material and a clad material in Modification-3 of the heat exchanger according to the second embodiment. Note that FIG. 17 is a cross-sectional view taken along lines corresponding to the A1-A1, B1-B1, B2-B2, and B3-B3 lines in FIG. When the header distributor 2 has a cross section as shown in FIG. 17 in all of the lines corresponding to the A1-A1, B1-B1, B2-B2, and B3-B3 lines in FIG. , Not limited. FIG. 17 shows a state before the brazing material 13c is melted.

  As shown in FIG. 17, the protrusion 12 b may be formed on the bare material 12. Even in such a configuration, the molten brazing material 13c flows into a region of the distribution channel 2a where the heat transfer tube 4 is not inserted, and the heat transfer tube 4 of the distribution channel 2a is inserted. Soaking into the gap between the heat transfer tube 4 and reaching the end of the heat transfer tube 4 and flowing into the region of the distribution flow path 2a where the heat transfer tube 4 is not inserted is suppressed. Note that a brazing material 13c may be applied to the inner peripheral surface of the second flow path 13a.

  As mentioned above, although Embodiment 1 and Embodiment 2 were demonstrated, this invention is not limited to description of each embodiment. For example, it is possible to combine all or a part of each embodiment, each modification, and the like.

1 heat exchanger, 2 header distributor, 2a distribution flow path, 3 header, 3a merge flow path, 4
Heat transfer tube, 5 fin, 11 plate, 12, 12_1 to 12_5 bare material, 12a, 12a_1 to 12a_5 first flow path, 12b protrusion, 12c top surface of protrusion, 12o first opening, 12r first region , 13, 13_1 to 13_4 Cladding material, 13a, 13a_1 to 13a_4 Second flow path, 13b base material, 13c brazing material, 13d exposed part, 13e bent part, 13o second opening part, 13ob base part opening part, 13oc brazing Material opening, 13r second region, 51 air conditioner, 52 compressor, 53 four-way valve, 54 heat source side heat exchanger, 55 expansion device, 56 load side heat exchanger, 57 heat source side fan, 58 load side fan 59 Control device.

Claims (14)

A header distributor having a distribution flow path for branching inflowing fluid into two,
A bare material in which a first flow path is formed and a first area is formed, which is an area having a first opening that is an end of the first flow path;
A second channel is formed, and a clad material in which a second region is formed, which is a region having a second opening that is an end of the second channel,
A plate-like body in which the first region of the bare material and the second region of the clad material are joined by a brazing material, and the first flow path and the second flow path are connected. Prepared,
A part of the distribution channel is constituted by the connected first channel and the second channel,
In the brazing material, the opening area of the brazing material, which is the portion where the brazing material including the second opening is not applied, is compared with the opening area of the first opening in the second region. The header distributor is applied so as to be larger than the opening area of the opening of the base material of the clad material in the second opening . Projections are formed in the first region of the bare material,
The first opening is formed in the protrusion,
The header distributor according to claim 1, wherein the protrusion protrudes inside the second flow path. A header distributor having a distribution flow path for branching inflowing fluid into two,
A bare material in which a first flow path is formed and a first area is formed, which is an area having a first opening that is an end of the first flow path;
A second channel is formed, and a clad material in which a second region is formed, which is a region having a second opening that is an end of the second channel,
A plate-like body in which the first region of the bare material and the second region of the clad material are joined by a brazing material, and the first flow path and the second flow path are connected. Prepared,
A part of the distribution channel is constituted by the connected first channel and the second channel,
Projections are formed in the first region of the bare material,
The first opening is formed in the protrusion,
The protrusion is a header distributor that protrudes inside the second flow path.   The header distributor according to claim 2 or 3, wherein a gap is formed between an outer peripheral surface of the protrusion and an inner peripheral surface of the second flow path before the brazing material is melted.   The header distributor according to claim 4, wherein the gap is a gap that becomes narrower toward a base of the protrusion.   The header distributor according to any one of claims 2 to 5, wherein a protrusion height of the protrusion is equal to or less than a plate thickness of the clad material. The brazing material in the second region, the surface of the brazing material, as compared with the base material of the surface of the clad material to a state closer to the first region, is applied, in claim 1 The described header distributor. In the second region, the brazing material includes an inner peripheral surface of the brazing material opening and a base material opening of the clad material in a region of the second opening close to the periphery of the clad material. The width of the exposed portion of the base formed between the inner peripheral surface and the second peripheral portion is smaller than the width in the region far from the periphery of the cladding material in the second opening, The header distributor according to claim 1 or 7 , which is applied. The second opening has a shape having a bent portion,
In the second region, the brazing material has an inner peripheral surface of the brazing material opening and an inner circumference of the clad material base material in a region of the second opening close to the bent portion. The width of the exposed portion of the substrate formed between the surface and the surface was applied so as to be smaller than the width in the region far from the bent portion of the second opening, The header distributor according to claim 1, 7 or 8 . A plurality of the second openings are formed in one clad material,
The brazing material has an inner peripheral surface of the opening of the brazing material and an opening of the base material of the clad material in a region close to the other second opening of the second opening in the second region. The width of the exposed portion of the base material formed between the inner peripheral surface of the base member and the inner peripheral surface of the base member is smaller than the width of the second opening portion in the region far from the other second opening portion. The header distributor according to claim 1 , wherein the header distributor is applied. The brazing material in the second region, the thickness of the brazing material, so that the plate 30% or less of the state of the thickness of the base material of the clad material, is applied, any claim 1-10 The header distributor according to claim 1. The header distributor according to any one of claims 1 to 11 ,
A heat exchanger comprising: a heat transfer tube connected to the plate-like body. An air conditioner comprising the heat exchanger according to claim 12 . A method of manufacturing a header distributor having a distribution flow path for branching an inflowing fluid into two,
A bare material in which a first flow path is formed and a first area is formed, which is an area having a first opening that is an end of the first flow path;
A second channel is formed, and a clad material in which a second region is formed, which is a region having a second opening that is an end of the second channel,
A plate-like body in which the first region of the bare material and the second region of the clad material are joined by a brazing material, and the first flow path and the second flow path are connected. Prepared ,
By the previous SL connected to said first flow path and the second flow path, a part of the distribution channel is constituted,
In the brazing material, the opening area of the brazing material, which is the portion where the brazing material including the second opening is not applied, is compared with the opening area of the first opening in the second region. A method of manufacturing a header distributor that is applied so as to be in a large state and to be in a large state as compared with an opening area of the opening of the base material of the clad material in the second opening .

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