JP7330294B2 - Heat exchanger, heat exchanger unit, and refrigeration cycle device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a heat exchanger, a heat exchanger unit including the heat exchanger, and a refrigeration cycle apparatus, and more particularly to a structure of a portion of a heat exchange member that is inserted into a header.

2. Description of the Related Art A heat exchanger is known that includes a heat exchange member that includes fins and heat transfer tubes and that has fins extending along the axial direction of the heat transfer tubes. In such a heat exchanger, the end of the heat exchange member is inserted into the header, and the entire end surface of the fin is in contact with the header, or the entire end surface of the fin is spaced apart from the header. (See Patent Document 1, for example).

JP 2018-155479 A

However, in the heat exchange member of Patent Document 1, the length of contact or joining between the fins and the header is long. The fins and the header are arranged so that the brazing material flows into the gap between the fins and the header by capillary force. Therefore, if the length of contact or bonding between the fins and the header is long, it is necessary to increase the amount of brazing material supplied between the fins and the header. As a result, the heat exchanger has a problem that the heat exchange member is damaged due to erosion or the like.

SUMMARY OF THE INVENTION The present invention is intended to solve the problems described above, and provides a heat exchanger, a heat exchanger unit, and a refrigeration cycle apparatus capable of suppressing damage to heat transfer tubes due to joining of heat exchange members and headers. for the purpose.

A heat exchanger according to the present invention includes a heat exchange member extending in a first direction, and a header to which the heat exchange member is connected, wherein the heat exchange member includes at least one heat exchanger extending in the first direction. a heat tube; and a fin formed on a portion of an edge of the at least one heat transfer tube in a second direction intersecting the first direction, wherein the end of the heat exchange member in the first direction is an insertion portion inserted into the header; a contact portion that contacts the header at a portion other than the insertion portion; and a separation portion that is separated from the header at a portion other than the insertion portion; The contact portion is positioned closer to the header than the separation portion in the first direction, is positioned between the insertion portion and the separation portion in the second direction, and is positioned between the insertion portion and the separation portion in the second direction. The header is at least part of the end surface in the first direction, and the header has uneven shapes arranged in parallel in the second direction on the surface on the side where the heat exchange member is inserted, and the surface is the contact surface. abutted with the part .
Further, the heat exchanger according to the present invention includes a heat exchange member extending in a first direction, and a header to which the heat exchange member is connected, and the heat exchange member includes at least one heat exchange member extending in the first direction. and a fin formed on a part of an edge of the at least one heat transfer tube in a second direction intersecting the first direction, wherein the end portion of the heat exchange member in the first direction comprises an insertion portion inserted into the header, a contact portion that contacts the header at a portion other than the insertion portion, and a separation portion that is separated from the header at a portion other than the insertion portion. The separation portion is positioned between the insertion portion and the contact portion in the second direction, and the header is parallel in the second direction on the surface of the side into which the heat exchange member is inserted. The surface is in contact with the contact portion, and the contact portion is at least part of the end surface of the fin in the first direction.

A heat exchanger unit according to the present invention includes the heat exchanger described above.

A refrigeration cycle apparatus according to the present invention includes the heat exchanger unit described above.

According to the present invention, the fins of the heat exchange member and the header are joined with an appropriate joining length. As a result, the heat exchanger can reduce the amount of brazing material used in joining the heat exchange member and the header, and perform proper joining, thereby suppressing damage to the heat exchange member.

1 is a refrigerant circuit diagram showing a configuration of a refrigeration cycle device 50 including a heat exchanger 100 according to Embodiment 1. FIG. 3A and 3B are trihedral views showing the main configuration of the heat exchanger 100 according to Embodiment 1. FIG. 3A and 3B are trihedral views of the heat exchange member 10 according to Embodiment 1. FIG. 3A and 3B are three views of the first header 30 of the heat exchanger 100 according to Embodiment 1. FIG. 4 is an enlarged view of a connecting portion between the heat exchange member 10 and the first header 30 of the heat exchanger 100 according to Embodiment 1. FIG. 4 is a top view showing a modification of the structure of fins 12 of heat exchange member 10 according to Embodiment 1. FIG. 4 is a top view showing a modification of the structure of fins 12 of heat exchange member 10 according to Embodiment 1. FIG. 4A and 4B are trihedral views of a heat exchange member 10A that is a modification of the heat exchange member 10 according to Embodiment 1. FIG. FIG. 9 is an enlarged view of a connecting portion between the heat exchange member 10A of FIG. 8 and a first header 30; 4A and 4B are trihedral views of a heat exchange member 10B that is a modification of the heat exchange member 10 according to Embodiment 1. FIG. 11 is an enlarged view of a connecting portion between the heat exchange member 10B of FIG. 10 and a first header 30; FIG. 8A and 8B are trihedral views of a heat exchange member 210A according to Embodiment 2. FIG. FIG. 11 is an enlarged view of a connecting portion between a heat exchange member 210A and a first header 30 of the heat exchanger 200 according to Embodiment 2; 8A and 8B are trihedral views of a heat exchange member 210B according to Embodiment 2. FIG. FIG. 11 is an enlarged view of a connecting portion between a heat exchange member 210B and a first header 30 of the heat exchanger 200 according to Embodiment 2; FIG. 11 is a trihedral view of a header 302 of a heat exchanger 300 according to Embodiment 3; FIG. 11 is an enlarged view of a connecting portion between a heat exchange member 310 and a first header 330 of a heat exchanger 300 according to Embodiment 3; FIG. 11 is an enlarged view of a connecting portion between a heat exchange member 310 of a heat exchanger 300 according to Embodiment 3 and a first header 330B that is a modification of the first header 330; FIG. 11 is an enlarged view of a connecting portion between a heat exchange member 310 of a heat exchanger 300 according to Embodiment 3 and a first header 330C that is a modification of the first header 330; FIG. 11 is an enlarged view of a connecting portion between a heat exchange member 310A that is a modification of the heat exchange member 310 and a first header 330A that is a modification of the first header 330 of the heat exchanger 300 according to Embodiment 3; FIG. 11 is an enlarged view of a connecting portion between a heat exchange member 310A that is a modification of the heat exchange member 310 and a first header 330B that is a modification of the first header 330 of the heat exchanger 300 according to Embodiment 3; FIG. 11 is an enlarged view of a connecting portion between a heat exchange member 310A that is a modification of the heat exchange member 310 and a first header 330C that is a modification of the first header 330 of the heat exchanger 300 according to Embodiment 3; FIG. 11 is an enlarged view of a connecting portion between a heat exchange member 310B that is a modification of the heat exchange member 310 and a first header 330A that is a modification of the first header 330 of the heat exchanger 300 according to Embodiment 3; 10A and 10B are trihedral views of heat exchange member 410 according to Embodiment 4. FIG. FIG. 11 is a trihedral view of heat exchange member 510 of heat exchange member 510 according to Embodiment 5. FIG.

Hereinafter, a heat exchanger, a heat exchanger unit, and a refrigerating cycle device according to Embodiment 1 will be described with reference to the drawings and the like. In the following drawings including FIG. 1, the relative dimensional relationship and shape of each constituent member may differ from the actual ones. Moreover, in the following drawings, the same reference numerals denote the same or corresponding parts, and this applies throughout the specification. In order to facilitate understanding, terms representing directions (eg, "up", "down", "right", "left", "front", "back", etc.) are used as appropriate. For convenience of explanation only, such description is not intended to limit the arrangement and orientation of devices or components. In the specification, the positional relationship between constituent members, the extending direction of each constituent member, and the arrangement direction of each constituent member are, in principle, those when the heat exchanger is installed in a usable state.

Embodiment 1.
(Refrigeration cycle device 50)
FIG. 1 is a refrigerant circuit diagram showing the configuration of a refrigeration cycle device 50 that includes a heat exchanger 100 according to Embodiment 1. As shown in FIG. In FIG. 1, the dotted arrow indicates the direction of refrigerant flow during cooling operation in the refrigerant circuit 110, and the solid arrow indicates the direction of refrigerant flow during heating operation. . First, a refrigeration cycle device 50 having a heat exchanger 100 will be described with reference to FIG. In the embodiment, an air conditioner is exemplified as the refrigeration cycle device 50, but the refrigeration cycle device 50 is, for example, a refrigerator, a freezer, a vending machine, an air conditioner, a refrigeration device, a water heater, and other refrigeration applications. Or used for air conditioning applications. The illustrated refrigerant circuit 110 is an example, and the configuration of the circuit elements and the like are not limited to the contents described in the embodiment, and can be appropriately changed within the technical scope of the embodiment. .

The refrigeration cycle device 50 has a refrigerant circuit 110 in which a compressor 101, a flow path switching device 102, an indoor heat exchanger 103, a pressure reducing device 104, and an outdoor heat exchanger 105 are annularly connected via refrigerant pipes. . As at least one of the outdoor heat exchanger 105 and the indoor heat exchanger 103, a heat exchanger 100, which will be described later, is used. The refrigeration cycle device 50 has an outdoor unit 106 and an indoor unit 107 . A device such as the outdoor unit 106 and the indoor unit 107 having a heat exchanger inside may be referred to as a heat exchanger unit. The outdoor unit 106 accommodates the compressor 101 , the flow path switching device 102 , the outdoor heat exchanger 105 , the pressure reducing device 104 , and the outdoor fan 108 that supplies outdoor air to the outdoor heat exchanger 105 . The indoor unit 107 accommodates the indoor heat exchanger 103 and an indoor fan 109 that supplies air to the indoor heat exchanger 103 . The outdoor unit 106 and the indoor unit 107 are connected via two extension pipes 111 and 112 which are part of the refrigerant pipes.

The compressor 101 is a fluid machine that compresses and discharges the sucked refrigerant. The channel switching device 102 is, for example, a four-way valve, and is a device that switches the coolant channel between cooling operation and heating operation under the control of a control device (not shown).

The indoor heat exchanger 103 is a heat exchanger that exchanges heat between the refrigerant flowing inside and the indoor air supplied by the indoor fan 109 . The indoor heat exchanger 103 functions as a condenser during heating operation, and functions as an evaporator during cooling operation.

The decompression device 104 is, for example, an expansion valve, and is a device that decompresses the refrigerant. As the decompression device 104, an electronic expansion valve whose opening is controlled by a control device can be used.

The outdoor heat exchanger 105 is a heat exchanger that exchanges heat between the refrigerant flowing inside and the air supplied by the outdoor fan 108 . The outdoor heat exchanger 105 functions as an evaporator during heating operation, and functions as a condenser during cooling operation.

(Operation of refrigeration cycle device 50)
Next, an example of the operation of the refrigeration cycle device 50 will be described with reference to FIG. During the heating operation of the refrigeration cycle device 50, the high-pressure, high-temperature gaseous refrigerant discharged from the compressor 101 flows into the indoor heat exchanger 103 via the flow path switching device 102, and is supplied by the indoor fan 109. heat exchange with and condense. The condensed refrigerant becomes a high-pressure liquid state, flows out from the indoor heat exchanger 103 , and becomes a low-pressure gas-liquid two-phase state by the decompression device 104 . The low-pressure gas-liquid two-phase refrigerant flows into the outdoor heat exchanger 105 and evaporates through heat exchange with the air supplied by the outdoor fan 108 . The evaporated refrigerant becomes a low-pressure gas state and is sucked into the compressor 101 .

During the cooling operation of the refrigeration cycle device 50, the refrigerant flowing through the refrigerant circuit 110 flows in the direction opposite to that during the heating operation. That is, during the cooling operation of the refrigeration cycle device 50, the high-pressure, high-temperature gaseous refrigerant discharged from the compressor 101 flows into the outdoor heat exchanger 105 via the flow path switching device 102, and is supplied by the outdoor fan 108. Condenses by exchanging heat with the air. The condensed refrigerant becomes a high-pressure liquid state, flows out from the outdoor heat exchanger 105 , and becomes a low-pressure gas-liquid two-phase state by the decompression device 104 . The low-pressure gas-liquid two-phase refrigerant flows into the indoor heat exchanger 103 and evaporates through heat exchange with the air supplied by the indoor fan 109 . The evaporated refrigerant becomes a low-pressure gas state and is sucked into the compressor 101 .

(Heat exchanger 100)
FIG. 2 is a trihedral view showing the main configuration of the heat exchanger 100 according to the first embodiment. 2(a) is a front view of the heat exchanger 100, FIG. 2(b) is a side view of the heat exchanger 100, and FIG. 2(c) is a bottom view of the heat exchanger 100. FIG. In FIG. 2 , arrows RF indicate the flow of refrigerant flowing into or out of the heat exchanger 100 . A heat exchanger 100 according to Embodiment 1 will be described with reference to FIG.

A heat exchanger 100 according to Embodiment 1 includes a plurality of heat exchange members 10, and a first header 30 and a second header 40 connected to both ends of the plurality of heat exchange members 10 in the y direction. A plurality of heat exchange members 10 are arranged in the x direction. Moreover, the plurality of heat exchange members 10 extend in the y direction, and are arranged with their tube axes along the y direction. In Embodiment 1, the y-direction is parallel to the direction of gravity. However, the arrangement of the heat exchanger 100 is not limited to this, and the y direction may be inclined with respect to the gravity direction. Further, the plurality of heat exchange members 10 are arranged at equal intervals and are arranged at predetermined intervals in the x direction. The first direction is the tube axis direction of the plurality of heat exchange members 10, that is, the y direction, and the second direction is the width direction of the plurality of heat exchange members 10, that is, the z direction. The direction, ie the x-direction, may be referred to as the third direction.

One end portion 13 a of the plurality of heat exchange members 10 in the tube axis direction is connected to the first header 30 . Further, the other ends 13b of the plurality of heat exchange members 10 in the tube axis direction are connected to the second header 40. As shown in FIG. The first header 30 and the second header 40 are arranged with the longitudinal direction facing the parallel direction of the plurality of heat exchange members 10 . The longitudinal directions of the first header 30 and the second header 40 are parallel to each other. In the following description, the first header 30 and the second header 40 may be collectively referred to as header 2. FIG.

A plurality of heat exchange members 10 are each inserted into the header 2 at a portion of each of the end portions 13a and 13b and joined by joining means such as brazing or adhesive. A portion of the heat exchange member 10 other than the portion inserted into the header 2 is referred to as a heat exchange portion 10f. The plurality of heat exchange members 10 have heat exchange portions 10 f located between the lower surface of the first header 30 and the upper surface of the second header 40 .

The heat exchanger 100 is a so-called finless heat exchanger that does not have corrugated fins or the like connecting the side surfaces 11a of the heat transfer tubes 11 of the heat exchange members 10 between the plurality of heat exchange members 10 . That is, the plurality of heat exchange members 10 are connected to each other only by the headers 2 , and spaces are formed between the side surfaces of the plurality of adjacent heat exchange members 10 . The plurality of heat exchange members 10 are set so that the distance between the side surfaces is narrow in order to improve the heat exchange efficiency.

(Heat exchange member 10)
FIG. 3 is a trihedral view of the heat exchange member 10 according to Embodiment 1. FIG. 3(a) is a front view of the heat exchange member 10, FIG. 3(b) is a side view of the heat exchange member 10, and FIG. 3(c) is a top view of the heat exchange member 10. FIG. In Embodiment 1, each of the plurality of heat exchange members 10 includes a heat transfer tube 11 that is a flat tube extending in the y direction, and a fin 12 extending in the z direction from a portion of the edge 14 of the heat transfer tube 11. . A refrigerant channel 18 is formed in the heat transfer tube 11 to circulate the refrigerant therein. Each of the heat exchange members 10 extends between the first header 30 and the second header 40 . The plurality of heat exchange members 10 are arranged so that the side surfaces 11a face each other. Between two adjacent heat exchange members 10 among the plurality of heat exchange members 10, a gap, which is an air flow path, is formed.

The parallel direction of the heat exchange members 10 of the heat exchanger 100 is the horizontal direction. However, the direction in which the plurality of heat exchange members 10 are arranged in parallel is not limited to the horizontal direction, and may be the vertical direction or a direction inclined with respect to the vertical direction. Similarly, in the heat exchanger 100, the tube axis direction of the plurality of heat exchange members 10 is the vertical direction. However, the extending direction of the plurality of heat exchange members 10 is not limited to the vertical direction, and may be a horizontal direction or a direction inclined with respect to the vertical direction.

When the heat exchanger 100 functions as an evaporator of the refrigeration cycle device 50 , in each of the plurality of heat exchange members 10 , the refrigerant flows inside the heat exchange member 10 from one end face 19 a in the y direction toward the other end face 19 b. flows. Further, when the heat exchanger 100 functions as a condenser of the refrigeration cycle device 50, in each of the plurality of heat exchange members 10, the inside of the heat exchange member 10 is expanded from the other end surface 19b in the y direction toward the one end surface 19a. Refrigerant flows through

As shown in FIG. 3 , the heat exchange member 10 includes heat transfer tubes 11 and fins 12 . The heat transfer tube 11 of the heat exchange member 10 is a flat multi-hole tube having a cross-sectional shape that is flat in one direction, such as an oval shape. The heat exchange member 10 has fins 12 extending from a portion of the longitudinal edge 14 of the heat transfer tube 11 in a cross section perpendicular to the y direction.

The heat exchange member 10 has a portion where the fins 12 are not installed on the edge 14 of the heat transfer tube 11 . Portions where the fins 12 are not installed on the edges 14 of the heat transfer tubes 11 of the heat exchange member 10 are inserted inside the first header 30 and the second header 40 . The heat exchange member 10 connects the first header 30 and the second header 40 by inserting respective portions of the ends 13 a and 13 b into the first header 30 and the second header 40 .

The end portions 13a and 13b of the heat exchange member 10 are composed of a plurality of portions separated and defined in the z-direction. The plurality of portions are a non-insertion portion 10a and an insertion portion 10b defined by dividing them by imaginary lines along the tube axis of the heat exchange member 10. As shown in FIG. A boundary between the non-insertion portion 10a and the insertion portion 10b is referred to as a switching portion 10c. At the ends 13a and 13b of the heat exchange member 10 shown in FIG. 3, the heat transfer tube 11 portion corresponds to the insertion portion 10b, and the fin 12 portion corresponds to the non-insertion portion 10a. The insertion portion 10 b is a portion of the y-direction end portion of the heat exchange member 10 that is inserted into the header 2 .

The non-insertion portion 10a refers to a portion of the y-direction end portion of the heat exchange member 10 other than the insertion portion 10b. In the first embodiment, the fin 12, which is the non-insertion portion 10a, has the separation portion 10d and the contact portion 10e on the end face in the y direction. The contact portion 10e contacts the header 2 at a portion other than the insertion portion 10b. The spacing portion 10d is spaced apart from the header 2 at portions other than the insertion portion 10b. The spaced portion 10d and the contact portion 10e form the end faces of the fins 12 in the y direction. there is That is, the contact portion 10e is located closer to the header 2 than the spaced portion 10d, and is located between the insertion portion 10b and the spaced portion 10d in the z direction.

(Header 2)
FIG. 4 is a trihedral view of the first header 30 of the heat exchanger 100 according to Embodiment 1. FIG. 4A is a front view of the first header 30, FIG. 4B is a side view of the first header 30, and FIG. 4C is a top view of the first header 30. . The first header 30 and the second header 40 each extend in the x-direction, are configured so that a refrigerant flows therein, and are connected to the heat exchange member 10 . As shown in FIG. 2 , for example, the coolant flows in the direction of arrow RF from one end of the first header 30 and is distributed to each of the plurality of heat exchange members 10 . The refrigerant that has passed through the plurality of heat exchange members 10 merges in the second header 40 and flows out from one end of the second header 40 .

2 and 4, the outer shape of the header 2 is a rectangular parallelepiped, but the shape is not limited. The outer shape of the header 2 may be, for example, a cylinder or an elliptical cylinder, and the cross-sectional shape can be changed as appropriate. Also, for the structure of the header 2, for example, a tubular body with both ends closed, a stack of plate-shaped bodies with slits formed thereon, and the like can be adopted. The first header 30 is formed with a coolant flow port 33 through which the coolant can flow in and out, and the second header 40 is formed with a coolant flow port 43 through which the coolant can flow in and out.

As shown in FIG. 4, the first header 30 is formed in a rectangular parallelepiped shape by combining a first shell member 31 forming a header upper surface 34a and a second shell member 32 forming a bottom. A coolant flow port 33 is provided at the end of the second outer shell member 32 in the x-reverse direction. A header upper surface 34a of the first header 30 is formed with a plurality of insertion holes 31a. The plurality of insertion holes 31a are arranged in parallel in the x direction corresponding to the plurality of heat exchange members 10 . The multiple insertion holes 31a are holes into which the respective insertion portions 10b of the multiple heat exchange members 10 are inserted, and penetrate the first outer shell member 31 in the plane direction. Note that the second header 40 has the same structure as the first header 30 .

(Structure of connection between heat exchange member 10 and header 2)
FIG. 5 is an enlarged view of a connecting portion between the heat exchange member 10 and the first header 30 of the heat exchanger 100 according to the first embodiment. The heat transfer tubes 11 , which are the insertion portions 10 b of the ends 13 a and 13 b of the heat exchange member 10 , are inserted into the insertion holes 31 a of the first header 30 . The insertion hole 31a has a shape that follows the shape of the outer peripheral surface of the insertion portion 10b. The insertion portion 10b and the insertion hole 31a are joined by, for example, brazing so that the refrigerant flowing through the inside of the heat exchanger 100 does not flow out. The contact portion 10e of the fin 12, which is the non-insertion portion 10a, is in contact with the header upper surface 34a of the first header 30, and the separation portion 10d of the fin 12, which is the non-insertion portion 10a, It is located away from the header upper surface 34a. At least a portion of the surface facing the header upper surface 34a of the first header 30 should be in contact with the header upper surface 34a of the first header 30 in the contact portion 10e. Moreover, the spacing portion 10d may be formed on a portion of the surface of the first header 30 facing the header upper surface 34a in the y direction. In FIG. 5, the tips of the fins 12 are aligned with the end surface 35 of the header 2. However, if the structure were such that the tips of the fins 12 protruded from the end surface 35 of the header 2, the structure would not be possible. However, the spacing portion 10d is formed at a position facing the first header 30 in the y direction.

With this configuration, the positional relationship between the heat exchange member 10 and the header 2 is uniquely determined in the heat exchanger 100 , facilitating the positioning of the heat exchange member 10 with respect to the header 2 . As a result, when the heat exchanger 100 is manufactured, the position can be easily determined simply by combining the heat exchange member 10 and the header 2 without providing a process or a jig for positioning the heat exchange member 10 and the header 2. , making it easier to manufacture. Therefore, the length of contact between the heat exchange member 10 and the header 2, that is, the length of contact between the fins 12 of the heat exchange member 10 and the header upper surface 34a of the header 2 is shortened. It is possible to reduce the amount of brazing material when brazing joints. As a result, the heat exchanger 100 can reduce manufacturing costs while ensuring the sealing performance and strength of the joint between the heat exchange member 10 and the header 2 . Moreover, the heat exchanger 100 can suppress damage to the heat transfer tubes due to erosion by reducing the amount of brazing material that joins the heat exchange member 10 and the header 2 .

In Embodiment 1, the non-insertion portion 10a is made up of a portion of the fin 12. As shown in FIG. The contact portion 10e is an end surface of the fin 12 in the y direction, and is located closer to the header 2 than the separation portion 10d. With this configuration, the heat exchange member 10 can be easily formed by forming the cutouts in the fins 12, which can be easily cut, when forming the separation portions 10d.

6 and 7 are top views showing modifications of the structure of the fins 12 of the heat exchange member 10 according to Embodiment 1. FIG. FIG. 6 is a diagram corresponding to FIG. 3(c). The fins 12 of the heat exchange member 10 are not limited to those formed integrally with the heat transfer tubes 11. For example, the fins 12 formed by bending a plate-like member to a flat multi-hole tube may be joined later. can be A heat exchange member 10 shown in FIG. 6 is configured by sandwiching a heat transfer tube 11, which is a flat multi-hole tube, between side surfaces 11a on both sides of the heat transfer tube 11 with plate members. The plate-shaped member is arranged along the outer peripheral surface of the heat transfer tube 11 . The plate-shaped member forms fins 12 by joining portions protruding from the heat transfer tubes 11 in the z-direction.

A heat exchange member 10 shown in FIG. 7 is formed by joining a plate-like member to one side surface 11 a of a heat transfer tube 11 . The plate-like member is bent along one side surface 11 a of the heat transfer tube 11 and an arc shape at the z-direction end of the heat transfer tube 11 and joined along the shape of the heat transfer tube 11 . Fins 12 are formed by portions of the plate-shaped member protruding from the heat transfer tubes 11 in the z-direction. The plate-shaped member is not limited to one bent along the shape of the heat transfer tube 11 , and may be formed by joining a flat plate to the side surface 11 a of the heat transfer tube 11 .

(Modified example of heat exchange member 10)
FIG. 8 is a trihedral view of a heat exchange member 10A that is a modification of the heat exchange member 10 according to Embodiment 1. FIG. In the heat exchange member 10A according to the modification, the shape of the fins 12, which are the non-insertion portions 10a, is changed with respect to the heat exchange member 10. As shown in FIG. In the heat exchange member 10A, in the z-direction, the contact portion 10e is provided on the heat transfer tube 11 side of the fin 12 like the heat exchange member 10, and the separation portion 10d is provided on the tip side of the fin 12. That is, It is common to the heat exchange member 10 in that the contact portion is positioned between the insertion portion 10b and the separation portion 10d in the z direction. However, the separation portion 10d is an inclined surface that is inclined away from the header 2 toward the tip side of the fin 12. As shown in FIG.

FIG. 9 is an enlarged view of the connecting portion between the heat exchange member 10A and the first header 30 in FIG. Similar to the heat exchange member 10 , the heat transfer tubes 11 , which are the insertion portions 10 b of the end portions 13 a and 13 b of the heat exchange member 10</b>A, are inserted into the insertion holes 31 a of the first header 30 . The contact portion 10 e of the fin 12 , which is the non-insertion portion 10 a, contacts the header upper surface 34 a of the first header 30 . At least a portion of the surface facing the header upper surface 34a of the first header 30 should be in contact with the header upper surface 34a of the first header 30 in the contact portion 10e. A spaced portion 10d of the fin 12, which is the non-insertion portion 10a, extends obliquely from the end of the contact portion 10e on the far side from the heat transfer tube 11. As shown in FIG. The separation portion 10d is inclined away from the header upper surface 34a of the first header 30 as it is separated from the heat transfer tube 11, and is positioned away from the header upper surface 34a of the first header 30. As shown in FIG. By being configured in this way, the heat exchanger 100 having the heat exchange member 10A can obtain the same effect as when the heat exchange member 10 is used. In addition, in the heat exchange member 10A, the shape of the tips 12c of the y-direction ends of the fins 12 can be formed at an obtuse angle. be able to.

FIG. 10 is a trihedral view of a heat exchange member 10B that is a modification of the heat exchange member 10 according to Embodiment 1. FIG. FIG. 11 is an enlarged view of the connecting portion between the heat exchange member 10B and the first header 30 in FIG. Similar to the heat exchange member 10 , the heat transfer tubes 11 , which are the insertion portions 10 b of the end portions 13 a and 13 b of the heat exchange member 10 B, are inserted into the insertion holes 31 a of the first header 30 . In the heat exchange member 10B, the contact portion 10e of the fin 12, which is the non-inserted portion 10a, contacts the header upper surface 34a of the first header 30. As shown in FIG. The contact portion 10e is arranged farther from the heat transfer tube 11 than the separation portion 10d in the z direction. That is, the separation portion 10d is positioned between the insertion portion 10b and the contact portion 10e in the z direction. Moreover, the spaced portion 10d is provided adjacent to the heat transfer tube 11 in the z direction. In other words, the non-inserted portion 10 a includes a spaced portion 10 d that is spaced apart from the first header 30 in a part of the end face of the fin 12 on the side of the heat transfer tube 11 . The fins 12 extend from the two edges 14 of the heat transfer tube 11 in the z direction, and the contact portion 10 e is arranged on the tip side of the two fins 12 , that is, on the side away from the heat transfer tube 11 . At least a portion of the contact portion 10 e facing the upper surface 34 of the first header 30 may be in contact with the upper surface 34 of the first header 30 . By being configured in this manner, the heat exchanger 100 having the heat exchange member 10B can obtain the same effects as when the heat exchange member 10 is used. The heat exchange member 10B also has a contact portion 10e on the tip 12c side of the end portion of the fin 12 in the y direction. Therefore, in the heat exchange member 10B, the distance between the two contact portions 10e that contact the header upper surface 34a of the first header 30 is longer than in the heat exchange member 10 in the z direction. Therefore, the heat exchanger 100 has the advantage of improving the positioning accuracy between the heat exchange member 10B and the header 2 during manufacturing.

Embodiment 2.
A heat exchanger 200 according to Embodiment 2 will be described. The heat exchanger 200 applies a heat exchange member 210A whose shape is changed instead of the heat exchange member 10 of the heat exchanger 100 according to the first embodiment. Components having the same functions and actions as those of the first embodiment are denoted by the same reference numerals, and descriptions thereof are omitted.

(Heat exchange member 210A)
FIG. 12 is a trihedral view of a heat exchange member 210A according to Embodiment 2. FIG. 12(a) is a front view of the heat exchange member 210A, FIG. 12(b) is a side view of the heat exchange member 210A, and FIG. 12(c) is a top view of the heat exchange member 210A. In Embodiment 2, each of the plurality of heat exchange members 210A is provided with fins 12 extending in the z-direction from part of the edge 14 of the heat transfer tube 11, which is a flat tube. A refrigerant channel 18 is formed in the heat transfer tube 11 to circulate the refrigerant therein. Each of the multiple heat exchange members 210A extends between the first header 30 and the second header 40 . 210 A of some heat-exchange members are arrange|positioned so that the side surface 11a may mutually oppose. Between two adjacent heat exchange members 210A among the plurality of heat exchange members 210A, a gap, which is an air flow path, is formed.

As shown in FIG. 12 , the heat exchange member 210A has a portion where the fins 12 are not installed on the edge 14 of the heat transfer tube 11 . Part of the portion where the fins 12 are not installed on the edge 14 of the heat transfer tube 11 of the heat exchange member 210A is inserted inside the first header 30 and the second header 40 . The heat exchange member 210</b>A connects the first header 30 and the second header 40 by inserting respective portions of the end portions 13 a and 13 b into the first header 30 and the second header 40 . A portion of the heat transfer tube 11 at the end portion 13a of the heat exchange member 210A where the fin 12 is not installed on the edge 14 is inclined so that the width of the heat transfer tube 11 in the z direction is narrowed toward the end surface 19a of the heat transfer tube 11. A sloped portion 14a is formed. In other words, the insertion portion 10b has a tapered shape that tapers toward the y-direction end surface of the heat transfer tube 11 of the heat exchange member 210A. Also, the end portion 13b of the heat exchange member 210A has the same structure as the end portion 13a.

FIG. 13 is an enlarged view of a connecting portion between heat exchange member 210A and first header 30 of heat exchanger 200 according to the second embodiment. The ends 13a and 13b of the heat exchange member 210A are composed of a plurality of portions separated and defined in the z-direction. The plurality of portions are a non-insertion portion 10a and an insertion portion 10b defined by dividing by imaginary lines along the tube axis of the heat exchange member 210A. A boundary between the non-insertion portion 10a and the insertion portion 10b is referred to as a switching portion 10c. At the end portions 13a and 13b of the heat exchange member 210A shown in FIG. 12, the central portion of the heat transfer tube 11 is the insertion portion 10b, and the z-direction end portion of the heat transfer tube 11 and the portion of the fins 12 are the non-insertion portions 10a. is. The insertion portion 10b is a portion of the inclined portion 14a on the central side with a portion on the way from the fin 12 side to the end surface 19a as a boundary.

As shown in FIG. 13, the heat exchange member 210A has a contact portion 10e formed in the middle of the inclined portion 14a, and the portion of the inclined portion 14a on the side of the fins 12 and the end surface of the fin 12 form a separation portion 10d. ing. That is, the contact portion 10e is located between the insertion portion 10b and the separation portion 10d in the z direction. A heat exchange member 210A according to the second embodiment differs from the heat exchange member 10 according to the first embodiment in that the contact portion 10e is formed on the heat transfer tube 11 . The heat exchanger 200 has a structure in which the header 2 and the heat transfer tube 11 are in contact with each other and positioned. By being configured in this way, the heat exchanger 200 according to the second embodiment has the same effects as the heat exchanger 100 according to the first embodiment. In the heat exchanger 200, the heat exchange member 210A is positioned by bringing the heat transfer tube 11, which has relatively high rigidity, into contact with the header 2 of the heat exchange member 210A. Therefore, the heat exchanger 200 can firmly position the heat exchange member 210A, thereby further improving the positioning accuracy. Furthermore, the heat exchange member 210A can be easily inserted into the insertion hole 31a of the header 2 because the edge 14 of the insertion portion 10b in the z direction is the inclined portion 14a, thereby improving the manufacturability of the heat exchanger 200. can be done.

(Modification of heat exchange member 210)
FIG. 14 is a trihedral view of heat exchange member 210B according to the second embodiment. 14(a) is a front view of the heat exchange member 210B, FIG. 14(b) is a side view of the heat exchange member 210B, and FIG. 14(c) is a top view of the heat exchange member 210B. A heat exchange member 210B is a modification of the heat exchange member 210A of the second embodiment, and is obtained by changing the shapes of the non-insertion portion 10a and the insertion portion 10b of the heat exchange member 210A. The heat exchange member 210B has a portion where the fins 12 are not installed on the edge 14 of the heat transfer tube 11 . Part of the portion where the fins 12 are not installed on the edge 14 of the heat transfer tube 11 of the heat exchange member 210B is inserted inside the first header 30 and the second header 40 . The heat exchange member 210</b>B connects the first header 30 and the second header 40 by inserting respective portions of the end portions 13 a and 13 b into the first header 30 and the second header 40 .

A portion of the heat transfer tube 11 at the end portion 13a of the heat exchange member 210B where the fins 12 are not installed on the edge 14 is formed with a step on the way from the end surface 19a of the heat transfer tube 11 toward the fins 12, and is stepped toward the header 2 side. A contact portion 10e, which is a stepped surface, is formed. The heat transfer tube 11 has a portion on the side of the end surface 19a that is thinner than a portion on the side where the fins 12 are installed. That is, the portion of the end portion 13a of the heat exchange member 10 where the fins 12 are not installed is as follows. That is, the z-direction width of the heat transfer tube 11 from the spaced portion 10d formed on the end surface of the fin 12 to the end surface 19a of the heat transfer tube 11 is equal to the heat transfer width of the portion of the heat transfer tube 11 where the fins 12 are installed. It is formed to have the same width as the heat tube 11 in the z direction. The portion of the heat transfer tube 11 on the side of the end surface 19a is narrower than the width of the heat transfer tube 11 in the z direction at the portion where the fins 12 of the heat transfer tube 11 are installed. The end portion 13b of the heat exchange member 210B has the same structure as the end portion 13a.

FIG. 15 is an enlarged view of the connecting portion between the heat exchange member 210B and the first header 30 of the heat exchanger 200 according to the second embodiment. The ends 13a and 13b of the heat exchange member 210B are also composed of a plurality of portions separated and defined in the z-direction. The plurality of portions are a non-insertion portion 10a and an insertion portion 10b defined by dividing by imaginary lines along the tube axis of the heat exchange member 210B. A boundary between the non-insertion portion 10a and the insertion portion 10b is referred to as a switching portion 10c. At the ends 13a and 13b of the heat exchange member 210B shown in FIG. 14, the central portion of the heat transfer tube 11 corresponds to the insertion portion 10b, and the z-direction end of the heat transfer tube 11 and the fins 12 are non-insertion portions. 10a. The insertion portion 10b includes the narrowed portion of the heat transfer tube 11 . A z-direction edge 14 of the narrowed portion of the heat transfer tube 11 forms an end face 15 facing the z-direction. The end face 15 is formed within a predetermined range from the end face 19a and fits into the insertion hole 31a of the header 2. As shown in FIG.

As shown in FIG. 15, the heat exchange member 210B has contact portions 10e formed at the end portions 13a and 13b, and the portion of the inclined portion 14a on the fin 12 side and the end face of the fin 12 form the separation portion 10d. ing. A heat exchange member 210B according to the second embodiment differs from the heat exchange member 10 according to the first embodiment in that the heat transfer tube 11 is formed with the contact portion 10e. The heat exchanger 200 has a structure in which the header 2 and the heat transfer tube 11 are in contact with each other and positioned. By being configured in this way, the heat exchanger 200 according to the second embodiment has the same effects as the heat exchanger 100 according to the first embodiment. In the heat exchanger 200, the heat exchange member 210B is positioned by bringing the heat transfer tube 11, which has relatively high rigidity, into contact with the header 2 of the heat exchange member 210B. Therefore, the heat exchanger 200 can firmly position the heat exchange member 210, thereby further improving the positioning accuracy.

In addition, the heat exchange member 210B may be inclined so that the end surface 15 becomes thinner toward the end surfaces 19a and 19b. With this configuration, the heat exchange member 210B is inclined so that the end face 15 of the insertion portion 10b tapers toward the end faces 19a and 19b, so that the heat exchange member 210B can be easily inserted into the insertion hole 31a of the header 2, and the heat can be Manufacturability of the exchanger 200 can be improved.

Embodiment 3.
A heat exchanger 300 according to Embodiment 3 will be described. The heat exchanger 300 applies a header 302 whose shape is changed instead of the header 2 of the heat exchanger 100 according to the first embodiment. Components having the same functions and actions as those of the first embodiment are denoted by the same reference numerals, and descriptions thereof are omitted.

(Header 2)
FIG. 16 is a trihedral view of header 302 of heat exchanger 300 according to the third embodiment. 16(a) is a front view of the header 302, FIG. 16(b) is a side view of the header 302, and FIG. 16(c) is a top view of the header 302. FIG. Header 302 is used as first header 330 or second header 340 in heat exchanger 300 . The first header 330 and the second header 340 each extend in the x-direction and are configured so that a coolant flows therein. The header 302 is used in place of the first header 30 or the second header 40 shown in FIG. Refrigerant is distributed to each of the members 310 . The refrigerant that has passed through the plurality of heat exchange members 310 joins in the second header 340 and flows out from one end of the second header 340 .

In Embodiment 1, the external shape of the header 2 is a rectangular parallelepiped, but the shape is not limited. The outer shape of the header 302 shown in FIG. 16 is such that the header upper surface 34a on the side where the insertion hole 31a into which the heat exchange member 310 is inserted is provided with inclined surfaces 36 at both corners in the z direction. there is The inclined surface 36, as shown in FIG. 16(b), is a surface that is inclined away from the heat exchange member 310 as it goes in the z direction or in the opposite direction in the z direction.

FIG. 17 is an enlarged view of a connecting portion between heat exchange member 310 and first header 330 of heat exchanger 300 according to the third embodiment. As shown in FIG. 16, the first header 330 has inclined surfaces 36 formed at both ends in the z direction of the header upper surface 34a. Therefore, the separation distance between the fins 12 and the header 2 is ensured without providing an inclined portion away from the header 2 at the end portion of the fins 12 on the side of the header 2 as in the heat exchange member 10A shown in FIG. can do. Therefore, the heat exchange member 310 can suppress reduction in the heat transfer area by reducing the notch amount of the fins 12 when viewed in the x direction.

(Modified example of header 302)
FIG. 18 is an enlarged view of a connecting portion between the heat exchange member 310 of the heat exchanger 300 according to Embodiment 3 and a first header 330B that is a modification of the first header 330. FIG. Header top surface 34a is not limited to the shape of header top surface 34a of header 302 shown in FIGS. As shown in FIG. 18, the first header 330B has a plurality of uneven shapes formed on the header upper surface 34a. The contact portion 10e of the heat exchange member 310 is in contact with the convex portion 37a positioned closest to the heat transfer tube 11 in the z direction. The convex portion 37b formed at a position farther from the heat transfer tube 11 than the convex portion 37a is positioned away from the spaced portion 10d that is a part of the end surface of the fin 12 . That is, the uneven shape formed on the header upper surface 34a of the header 302 forms a space between it and the spacing portion 10d.

FIG. 19 is an enlarged view of a connecting portion between heat exchange member 310 of heat exchanger 300 according to Embodiment 3 and first header 330C, which is a modification of first header 330. As shown in FIG. The first header 330C has fine unevenness on the header upper surface 34a. The contact portion 10e of the heat exchange member 310 is in contact with the apex of the uneven protrusions formed on the header upper surface 34a. The spaced portion 10d is located away from the peaks of the uneven convex portions. In the first headers 330B and 330C according to the modified example, by reducing the cutout amount of the fins 12 when viewed in the x direction, it is possible to suppress the decrease in the heat transfer area and also to reduce the bonding area between the fins 12 and the header upper surface 34a. can be changed as needed, the bonding strength between the heat exchange member 310 and the header 320 can be ensured.

FIG. 20 is an enlarged view of a connecting portion between a heat exchange member 310A that is a modification of the heat exchange member 310 and a first header 330A that is a modification of the first header 330 of the heat exchanger 300 according to the third embodiment. be. 310 A of heat exchange members which are a modification eliminate the notch of the fin 12 of the heat exchange member 310. FIG. The portion of the fins 12 of the heat exchange member 310A facing the header upper surface 34a is a contact portion 10e, and the portion facing the inclined surface 36 of the header 330A in the y direction is a separation portion 10d. That is, it is possible to form the separation portion 10d by providing the inclined surface 36 like the header 330A without providing the notch at the end of the fin 12 on the side of the header 2 like the heat exchange member 310A. With this configuration, the heat exchanger 300 secures the maximum heat transfer area of the fins 12, secures the separation portion 10d between the fins 12 and the header 2, and maintains the space between the fins 12 and the header upper surface 34a. , and the positioning accuracy of the heat exchange member 310A can also be ensured. It should be noted that the contact portion 10e need not be entirely in contact with the header upper surface 34a. good.

FIG. 21 is an enlarged view of a connecting portion between a heat exchange member 310A, which is a modification of the heat exchange member 310, and a first header 330B, which is a modification of the first header 330, of the heat exchanger 300 according to the third embodiment. be. Since the header upper surface 34a of the first header 330B has a plurality of uneven shapes, the fins 12 of the heat exchange member 310A are in contact with the projections 37a formed on the header upper surface 34a in the y direction. A portion that forms the contact portion 10e and faces the concave portion of the header upper surface 34a in the y direction forms the separation portion 10d. Such a combination of the heat exchange member 310A and the first header 330B can also provide the same effect as the combination shown in FIG.

FIG. 22 is an enlarged view of a connecting portion between a heat exchange member 310A, which is a modification of the heat exchange member 310, and a first header 330C, which is a modification of the first header 330, of the heat exchanger 300 according to the third embodiment. be. Since the first header 330B has fine irregularities formed on the top surface 34a of the header, the fins 12 of the heat exchange member 310A have a portion that faces the apex of the projection formed on the top surface 34a of the header in the y direction. The contact portion 10e, which faces the concave portion of the header upper surface 34a in the y direction, is the separation portion 10d. Such a combination of the heat exchange member 310A and the first header 330B can also provide the same effect as the combination shown in FIG. According to the heat exchanger 300 shown in FIGS. 20 to 22, since the bonding area between the fins 12 and the header upper surface 34a can be changed as needed, the heat exchanger 300 can be configured by combining the heat exchange member 310 and the header 320. can sufficiently secure the bonding strength of

FIG. 23 is an enlarged view of a connecting portion between a heat exchange member 310B that is a modification of the heat exchange member 310 and a first header 330A that is a modification of the first header 330 of the heat exchanger 300 according to the third embodiment. be. A heat exchange member 310B, which is a modification, has a shape different from that of the heat exchange member 310A shown in FIG. The heat exchange member 310B has end faces 15 formed at both ends in the z direction of the insertion portion 10b. The contact portion 10e of the heat exchange member 310B is composed of the end surface of the fin 12 and the stepped surface 11b formed on the heat transfer tube 11. As shown in FIG. With this configuration, the heat exchanger 300 secures the maximum heat transfer area of the fins 12, secures the separation portion 10d between the fins 12 and the header 2, and maintains the space between the fins 12 and the header upper surface 34a. can also ensure a bonding area of . Further, since the contact portion 10e is formed not only by the fins 12 but also by the step surface 11d of the heat transfer tube 11, the rigidity of the contact portion 10e is improved, and the accuracy of positioning is also improved.

Embodiment 4.
A heat exchanger 400 according to Embodiment 4 will be described. The heat exchange member 410 of the heat exchanger 400 includes a plurality of heat transfer tubes 411 obtained by changing the number and shape of the heat transfer tubes 11 of the heat exchange member 10 of the heat exchanger 100 according to Embodiment 1. 411 are connected by fins 412 . Components having the same functions and actions as those of the first embodiment are denoted by the same reference numerals, and descriptions thereof are omitted.

FIG. 24 is a trihedral view of heat exchange member 410 according to the fourth embodiment. 24(a) is a front view of heat exchange member 410, FIG. 24(b) is a side view of heat exchange member 410, and FIG. 24(c) is a top view of heat exchange member 410. FIG. The heat exchange member 410 includes three heat transfer tubes 411 arranged in parallel in the z direction. The heat transfer tube 411 has a circular cross-sectional shape in any cross section in the y direction. Further, the heat exchange member 410 is provided with fins 412 between adjacent heat transfer tubes 411 .

In the heat exchange member 410, the heat transfer tube 411 is the insertion portion 10b, and the fins 12 and 412 are the non-insertion portions 10a. The end surfaces of the fins 12 and the fins 412, which are the non-insertion portions 10a, on the side of the header 2 are provided with the separation portion 10d and the contact portion 10e, similarly to the end surfaces of the fins 12 of the heat exchange member 10 according to the first embodiment. ing. Thus, the heat exchange member 410 can also use the heat transfer tube 411 with a circular cross section instead of the heat transfer tube 11 which is a flat multi-hole tube. The header 2 used for the heat exchanger 400 has a circular insertion hole 31 a that matches the heat transfer tube 411 . Like heat exchanger 400 according to Embodiment 4, heat exchanger 400 is not limited to heat transfer tubes 411 being flat multi-hole tubes, and heat exchanger 100 according to Embodiment 1 may be heat transfer tubes of various shapes. You can get the same effect as

Embodiment 5.
A heat exchanger 500 according to Embodiment 5 will be described. The heat exchange member 510 of the heat exchanger 500 includes a plurality of heat transfer tubes 511 obtained by changing the number and shape of the heat transfer tubes 11 of the heat exchange member 210 of the heat exchanger 200 according to the second embodiment. 511 are connected by fins 512 . Components having the same functions and actions as those of the second embodiment are denoted by the same reference numerals, and descriptions thereof are omitted.

FIG. 25 is a trihedral view of heat exchange member 510 of heat exchange member 510 according to the fifth embodiment. 25A is a front view of the heat exchange member 510, FIG. 25B is a side view of the heat exchange member 510, and FIG. 25C is a top view of the heat exchange member 510. FIG. The heat exchange member 510 has a circular cross-section like the heat exchange member 410 according to the fourth embodiment, but a step is formed at the end of the heat transfer tube 511 . That is, as with the heat exchange member 210 according to the second embodiment, the non-insertion portion 10a of the heat exchange member 510 includes the fins 12 and 512 and a portion of the heat transfer tube 511 . The heat exchanger 500 according to Embodiment 5 can bring the relatively rigid heat transfer tubes 511 and the header 2 into contact with each other by providing this configuration. Therefore, the heat exchanger 500 can firmly position the heat exchange member 510 and the header 2 similarly to the heat exchanger 200 according to the second embodiment, and can improve the positioning accuracy and productivity.

Although the embodiments have been described above, the present invention is not limited to the above-described embodiments. For example, each embodiment may be combined. In short, the technical scope includes various modifications, applications, and uses made by those skilled in the art as necessary.

2 header 10 heat exchange member 10A heat exchange member 10B heat exchange member 10a non-insertion portion 10b insertion portion 10c switching portion 10d spacing portion 10e contact portion 10f heat exchange portion 11 heat transfer tube 11a Side surface 12 Fin 12c Tip 13a End 13b End 14 Edge 14a Inclined portion 15 End face 18 Coolant channel 19a End face 19b End face 30 First header 31 First outer member , 31a insertion hole, 32 second outer member, 33 refrigerant flow port, 34 upper surface, 34a header upper surface, 36 inclined surface, 37a convex portion, 37b convex portion, 40 second header, 50 refrigeration cycle device, 100 heat exchanger, 101 compressor, 102 flow switching device, 103 indoor heat exchanger, 104 decompression device, 105 outdoor heat exchanger, 106 outdoor unit, 107 indoor unit, 108 outdoor fan, 109 indoor fan, 110 refrigerant circuit, 111 extension pipe, 112 extension pipe, 200 heat exchanger, 210 heat exchange member, 210A heat exchange member, 210B heat exchange member, 300 heat exchanger, 302 header, 310 heat exchange member, 310A heat exchange member, 310B heat exchange member, 320 header, 330 first header 330B first header 330C first header 340 second header 400 heat exchanger 410 heat exchange member 411 heat transfer tube 412 fin 500 heat exchanger 510 heat exchange member 511 heat transfer tube , 512 fins, RF arrows.

Claims (5)

a heat exchange member extending in a first direction;
a header to which the heat exchange member is connected,
The heat exchange member is
at least one heat transfer tube extending in the first direction;
a fin formed on a portion of an edge of the at least one heat transfer tube in a second direction that intersects the first direction;
The end of the heat exchange member in the first direction,
an insertion portion inserted inside the header;
a contact portion that contacts the header at a portion other than the insertion portion;
a spacing portion that is spaced apart from the header in a portion other than the insertion portion;
The contact portion is
positioned closer to the header than the spaced portion in the first direction;
located between the insertion portion and the separation portion in the second direction ;
at least part of an end surface of the fin in the first direction;
The header is
Concavo-convex shapes arranged in parallel in the second direction on the surface on the side where the heat exchange member is inserted,
The surface is
A heat exchanger in contact with the contact portion . a heat exchange member extending in a first direction;
a header to which the heat exchange member is connected,
The heat exchange member is
at least one heat transfer tube extending in the first direction;
a fin formed on a portion of the edge of the at least one heat transfer tube in a second direction that intersects the first direction;
The end of the heat exchange member in the first direction,
an insertion portion inserted inside the header;
a contact portion that contacts the header at a portion other than the insertion portion;
a spacing portion that is spaced apart from the header in a portion other than the insertion portion;
The spacing portion is
positioned between the insertion portion and the contact portion in the second direction ;
The header is
Concavo-convex shapes arranged in parallel in the second direction on the surface on the side where the heat exchange member is inserted,
The surface is
abutted with the abutment portion,
The contact portion is
A heat exchanger that is at least part of the end face of the fin in the first direction . The at least one heat transfer tube,
3. The heat exchanger according to claim 1 or 2 , which is a flat multi-hole tube. A heat exchanger unit comprising the heat exchanger according to any one of claims 1-3 . A refrigeration cycle apparatus comprising the heat exchanger unit according to claim 4 .

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