Heat exchanger, heat exchange unit, and air conditioner

Abstract

A heat exchanger according to the present disclosure comprises: a heat exchanger body that extends in a first direction intersecting the plumb vertical direction, the heat exchanger body having heat transfer piping and a plurality of fins; and a holder that is attached to one first-direction end portion of the heat exchanger body. The heat transfer piping has a plurality of extension parts that extend in the first direction, and a plurality of turn-back parts that link together the first-direction end portions of adjacent extension parts. The holder has a base part that is positioned on one first-direction side of the heat exchanger body, a peripheral wall part that protrudes toward one first-direction side from the outer peripheral edge portion of the base part, and a partition wall part that partisions the interior of the peripheral wall part in a second direction intersecting the horizontal direction. A plurality of accommodation portions that are lined up in the second direction are formed by the base part, the peripheral wall part, and the partition wall part. Each base part in the plurality of accommodation parts has formed therein a through-hole through which the turn-back parts pass. The inner edges of the through-holes are disposed so as to be set apart from the turn-back parts. The partition wall part includes a first partition wall part. A through-portion passing through the first partition wall part is formed in the partition wall part.

Description

[Technical Field]

[0001] The present disclosure relates to a heat exchanger, a heat exchange unit, and an air conditioner. [Background technology]

[0002] For example, as shown in Patent Document 1, there is known an air conditioner that is coupled to one end of a heat exchanger (heat exchanger body) and includes a holder having an opening (through hole) that receives a hairpin section (folded section) that connects one ends of straight pipes. In the air conditioner of Patent Document 1, a gap is provided between the inner periphery of the opening and the hairpin section to allow condensed water (dew water) to flow by gravity. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-55953 Summary of the Invention [Problem to be solved by the invention]

[0004] In the holder described above, partition walls are provided for reinforcement, for example, to form multiple storage compartments for storing hairpins. As a result, there is a risk that condensed water (dew condensation water) that does not flow into the gap between the inner periphery of the opening and the hairpin may accumulate and remain in the storage compartment.

[0005] In view of the above circumstances, one of the objects of the present disclosure is to provide a heat exchanger having a structure that can prevent condensation water from remaining within the storage portion of the holder, a heat exchange unit that includes such a heat exchanger, and an air conditioner that includes such a heat exchange unit. [Means for solving the problem]

[0006] One aspect of a heat exchanger according to the present disclosure is a heat exchanger provided in an air conditioner, the heat exchanger comprising: a heat exchanger body having a heat transfer tube and a plurality of fins attached to the heat transfer tube, and extending in a first direction intersecting a vertical direction; and a holder attached to an end of the heat exchanger body on one side in the first direction, wherein the heat transfer tube has a plurality of extension portions extending in the first direction and a plurality of folded portions connecting ends of adjacent extension portions in the first direction, and the holder has a base portion located on one side of the heat exchanger body in the first direction and a fold portion extending from an outer peripheral edge of the base to an outer peripheral edge of the base in the first direction. The container has a peripheral wall portion protruding to one side and at least one partition wall portion that divides the interior of the peripheral wall portion in a second direction that intersects the horizontal direction, and the base portion, the peripheral wall portion, and the at least one partition wall portion form a plurality of storage sections lined up in the second direction, and each of the bases in the plurality of storage sections has a through hole through which the folded portion passes, and the inner edge of the through hole is positioned away from the folded portion, and the at least one partition wall portion includes a first partition wall portion, and the first partition wall portion has at least one penetration portion formed therein that penetrates the first partition wall portion.

[0007] One aspect of a heat exchange unit according to the present disclosure includes the above-described heat exchanger and a blower that sends air to the heat exchanger.

[0008] One aspect of an air conditioner according to the present disclosure includes an indoor unit and an outdoor unit, and at least one of the indoor unit and the outdoor unit is the above-described heat exchange unit. [Effects of the Invention]

[0009] According to the present disclosure, in a heat exchanger for an air conditioner, it is possible to prevent condensation water from remaining inside the housing portion of the holder. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a schematic diagram showing a general configuration of an air conditioner according to an embodiment. [Figure 2] 1 is a perspective view showing an air conditioner according to an embodiment. [Figure 3] 3 is a cross-sectional view showing the indoor unit in the embodiment, taken along line III-III in FIG. 2. FIG. [Figure 4] FIG. 4 is a cross-sectional view showing the indoor unit in the embodiment, taken along line IV-IV in FIG. 2. [Figure 5] FIG. 2 is an exploded perspective view showing the heat exchanger according to the embodiment. [Figure 6] FIG. 2 is a perspective view showing a part of a heat exchanger according to an embodiment. [Figure 7] FIG. 2 is a perspective view showing a holder according to the embodiment. [Figure 8] 8 is a perspective view showing the holder in the embodiment, viewed from an angle different from that in FIG. 7. FIG. [Figure 9] FIG. 2 is a perspective view showing a part of a heat exchanger body and a part of a holder in the embodiment. [Figure 10] 10 is a view showing a part of a heat exchanger body and a part of a holder according to an embodiment, as viewed from the left side. FIG. [Figure 11] FIG. 2 is a perspective view showing a part of a holder according to an embodiment. [Figure 12] 12 is a perspective view showing a part of the holder in the embodiment, seen from an angle different from that in FIG. 11. FIG. [Figure 13] FIG. 2 is a partial cross-sectional perspective view showing a part of a heat exchanger and a part of a drain pan in the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. Note that the scope of the present disclosure is not limited to the following embodiments and can be modified as desired within the scope of the technical concept of the present disclosure. In addition, in the following drawings, the scale and number of each structure may differ from the scale and number of the actual structure in order to make each configuration easier to understand.

[0012] The drawings also show the X-axis, Y-axis, and Z-axis as appropriate. The X-axis indicates one of the horizontal directions. The Y-axis indicates the other of the horizontal directions. The Z-axis indicates the vertical direction. In the following description, the horizontal direction along the X-axis is referred to as the "front-rear direction X," the horizontal direction along the Y-axis is referred to as the "left-right direction (first direction) Y," and the vertical direction along the Z-axis is referred to as the "vertical direction Z." The front-rear direction X, left-right direction Y, and vertical direction Z are perpendicular to each other. In the following description, the side of the vertical direction Z toward which the arrow of the Z-axis points (+Z side) is referred to as the upper side, and the side of the vertical direction Z opposite to the side toward which the arrow of the Z-axis points (-Z side) is referred to as the lower side. Furthermore, the side of the front-rear direction X toward which the arrow of the X-axis points (+X side) is referred to as the front side, and the side of the front-rear direction X opposite to the side toward which the arrow of the X-axis points (-X side) is referred to as the rear side. The left-right direction Y is the left-right direction when the indoor unit 11 in the following embodiment is viewed from the front (+X side). In other words, the side of the left-right direction Y toward which the Y-axis arrow points (+Y side) is the right side, and the side of the left-right direction Y opposite to the side toward which the Y-axis arrow points (-Y side) is the left side.

[0013] In the following embodiments, the left-right direction Y corresponds to the "first direction." In the following embodiments, the left side (-Y side) corresponds to "one side of the first direction," and the right side (+Y side) corresponds to "the other side of the first direction."

[0014] FIG. 1 is a schematic diagram showing the general configuration of an air conditioner 10 according to an embodiment. FIG. 2 is a perspective view showing the air conditioner 10 according to an embodiment. As shown in FIGS. 1 and 2, the air conditioner 10 includes an indoor unit (heat exchange unit) 11, an outdoor unit 12, and a circulation path section 13. The indoor unit 11 is disposed indoors. The outdoor unit 12 is disposed outdoors. The indoor unit 11 and the outdoor unit 12 are connected to each other by the circulation path section 13 through which a refrigerant 19 circulates. More specifically, as shown in FIG. 2, the indoor unit 11 and the outdoor unit 12 are connected to each other by a piping bundle 13a that forms part of the circulation path section 13. The indoor unit 11 and the outdoor unit 12 are heat exchange units that exchange heat with the air.

[0015] The air conditioner 10 can adjust the temperature of the air in the room by exchanging heat between the refrigerant 19 flowing in the circulation path section 13 and the air in the room where the indoor unit 11 is located. Examples of the refrigerant 19 include fluorine-based refrigerants and hydrocarbon-based refrigerants, which have a low global warming potential (GWP).

[0016] 1, the outdoor unit 12 includes a housing 12a, a compressor 12b, a heat exchanger 12c, a flow rate adjustment valve 12d, a blower 12e, a four-way valve 12f, and a control unit 12g. The housing 12a accommodates the compressor 12b, the heat exchanger 12c, the flow rate adjustment valve 12d, the blower 12e, the four-way valve 12f, and the control unit 12g.

[0017] Compressor 12b, heat exchanger 12c, flow rate adjustment valve 12d, and four-way valve 12f are provided in a portion of circulation path 13 that is located inside casing 12a. Compressor 12b, heat exchanger 12c, flow rate adjustment valve 12d, and four-way valve 12f are connected by a portion of circulation path 13 that is located inside casing 12a.

[0018] The four-way valve 12f is provided in a portion of the circulation path section 13 that is connected to the discharge side of the compressor 12b. The four-way valve 12f can reverse the direction of the refrigerant 19 flowing through the circulation path section 13 by switching a portion of the path of the circulation path section 13. When the path connected by the four-way valve 12f is the path shown by the solid line at the four-way valve 12f in FIG. 1, the refrigerant 19 flows through the circulation path section 13 in the direction shown by the solid arrow in FIG. 1. On the other hand, when the path connected by the four-way valve 12f is the path shown by the dashed line at the four-way valve 12f in FIG. 1, the refrigerant 19 flows through the circulation path section 13 in the direction shown by the dashed arrow in FIG. 1.

[0019] The indoor unit 11 includes a housing 20, a heat exchanger 90, and a blower 50 that sends air to the heat exchanger 90. The housing 20 houses the heat exchanger 90 and the blower 50 inside. The indoor unit 11 is capable of cooling operation to cool the air in the room where the indoor unit 11 is located, and heating operation to warm the air in the room where the indoor unit 11 is located.

[0020] When the indoor unit 11 is in cooling operation, the refrigerant 19 flowing in the circulation path portion 13 flows in the direction shown by the solid arrow in Fig. 1. In other words, when the indoor unit 11 is in cooling operation, the refrigerant 19 flowing in the circulation path portion 13 circulates through the compressor 12b, the heat exchanger 12c of the outdoor unit 12, the flow control valve 12d, and the heat exchanger 90 of the indoor unit 11 in that order, before returning to the compressor 12b. During cooling operation, the heat exchanger 12c in the outdoor unit 12 functions as a condenser, and the heat exchanger 90 in the indoor unit 11 functions as an evaporator.

[0021] On the other hand, when the indoor unit 11 is in heating operation, the refrigerant 19 flowing in the circulation path portion 13 flows in the direction shown by the dashed line in Fig. 1. In other words, when the indoor unit 11 is in heating operation, the refrigerant 19 flowing in the circulation path portion 13 circulates through the compressor 12b, the heat exchanger 90 of the indoor unit 11, the flow control valve 12d, and the heat exchanger 12c of the outdoor unit 12, in that order, before returning to the compressor 12b. In heating operation, the heat exchanger 12c in the outdoor unit 12 functions as an evaporator, and the heat exchanger 90 in the indoor unit 11 functions as a condenser.

[0022] Next, the indoor unit 11 will be described in more detail. Fig. 3 is a cross-sectional view showing the indoor unit 11, taken along III-III in Fig. 2. Fig. 4 is a cross-sectional view showing the indoor unit 11, taken along IV-IV in Fig. 2. As shown in Figs. 2 to 4, the indoor unit 11 is a ceiling-embedded indoor unit that is installed by being embedded in a ceiling. The housing 20 of the indoor unit 11 has a housing main body 21 and a design panel 22.

[0023] The housing main body 21 is in the shape of a substantially rectangular parallelepiped box that extends in the left-right direction Y and is open on the bottom. The housing main body 21 is installed by being embedded in the ceiling of the room in which the indoor unit 11 is installed. As shown in FIG. 2, the housing main body 21 is fixed to the ceiling via four suspension bolts that extend in the vertical direction Z. The upper ends of the suspension bolts are fixed to the ceiling slab.

[0024] The design panel 22 is attached to an opening on the lower side of the housing main body 21. The design panel 22 is exposed to the room where the indoor unit 11 is installed. The design panel 22 is a generally rectangular plate that is long in the left-right direction Y. The design panel 22 protrudes further on both sides in the left-right direction Y than the housing main body 21. The design panel 22 is formed with an air inlet 22a and an air outlet 22b. Two air inlets 22a are provided with an interval in the front-rear direction X. Each air inlet 22a is partitioned in a lattice pattern. The air outlet 22b is located forward (on the +X side) of the air inlet 22a.

[0025] As shown in Fig. 3, an air passage member 30 is disposed inside the housing main body 21. The air passage member 30 has an air passage 31 that extends from the fan 50 to the air outlet 22b. The air passage 31 extends from the fan 50 to the front side (+X side) and then curves downward to extend to the air outlet 22b. As shown in Fig. 4, the air passage member 30 has a side wall portion 32 that covers the fan 50 from the left side (-Y side). The side wall portion 32 is located above a holder 70, which will be described later, of the heat exchanger 90.

[0026] 2, an electrical equipment box 80 is attached to the left side (-Y side) of the housing main body 21. The electrical equipment box 80 is located above a portion of the design panel 22 that protrudes to the left from the housing main body 21. The electrical equipment box 80 houses a control board that controls the indoor unit 11 and the like.

[0027] In this embodiment, blower 50 is a crossflow fan extending in the left-right direction Y. As shown in FIG. 4 , blower 50 has impeller 51 extending in the left-right direction Y and drive unit 52 that rotates impeller 51 around rotation axis R extending in the left-right direction Y. Drive unit 52 is a motor. Drive unit 52 is held on side wall portion 32 of air passage member 30. Drive unit 52 is electrically connected to a control board in electrical equipment box 80. When drive unit 52 rotates impeller 51 based on a signal from the control board, indoor air is drawn into housing 20 through air inlet 22a. The air drawn into housing 20 passes through heat exchanger 90, is drawn into impeller 51, and is discharged from impeller 51 into air passage 31. The air discharged into air passage 31 flows through air passage 31 and is blown into the room through air outlet 22b.

[0028] Fig. 5 is an exploded perspective view showing the heat exchanger 90. As shown in Fig. 5, the heat exchanger 90 extends in the left-right direction Y. The heat exchanger 90 includes a heat exchanger body 40 extending in the left-right direction Y intersecting with the vertical direction Z, and a holder 70 attached to the left end (-Y side) of the heat exchanger body 40.

[0029] In this embodiment, the heat exchanger body 40 has a first heat exchange section 40a and a second heat exchange section 40b. The first heat exchange section 40a is located rearward (negative X-side) of the second heat exchange section 40b. As shown in FIG. 3, the first heat exchange section 40a and the second heat exchange section 40b extend upward in the left-right direction Y, gradually moving away from each other in the front-rear direction X. The lower ends of the first heat exchange section 40a and the second heat exchange section 40b are connected to each other below the blower 50. The first heat exchange section 40a and the second heat exchange section 40b form a substantially V-shape in the left-right direction Y.

[0030] In the following description, the direction in which the first heat exchanger 40a extends as viewed in the left-right direction Y is referred to as the "first inclined direction (second direction) D1," and the direction in which the second heat exchanger 40b extends as viewed in the left-right direction Y is referred to as the "second inclined direction (second direction) D2." In this embodiment, the first inclined direction D1 and the second inclined direction D2 correspond to a second direction that intersects with the horizontal direction. The first inclined direction D1 and the second inclined direction D2 are directions that are perpendicular to the left-right direction Y and inclined obliquely with respect to both the front-rear direction X and the vertical direction Z. The first inclined direction D1 is a direction that extends upward toward the rear (-X side). The second inclined direction D2 is a direction that extends upward toward the front (+X side).

[0031] In the following description, the side of the first inclination direction D1 toward which the arrow of the D1 axis shown in the drawings (+D1 side) points, i.e., the side that is the upper side (+Z side) and the rear side (-X side) in the first inclination direction D1, will be referred to as "one side of the first inclination direction D1." Additionally, the side of the first inclination direction D1 opposite to the side toward which the arrow of the D1 axis shown in the drawings points (-D1 side), i.e., the side that is the lower side (-Z side) and the front side (+X side) in the first inclination direction D1, will be referred to as "the other side of the first inclination direction D1."

[0032] The upper portion of the first heat exchanger 40a and the upper portion of the second heat exchanger 40b are arranged with the fan 50 sandwiched between them in the front-to-rear direction X. The upper end of the first heat exchanger 40a is located higher than the upper end of the second heat exchanger 40b. The upper end of the first heat exchanger 40a is located higher than the upper end of the fan 50. The upper end of the second heat exchanger 40b is located lower than the upper end of the fan 50.

[0033] The first heat exchange unit 40a is located above and apart from the one of the two air inlets 22a that is located on the rear side (-X side). Air drawn into the housing 20 from the air inlet 22a located on the rear side passes through the first heat exchange unit 40a and is drawn into the impeller 51 of the fan 50. The second heat exchange unit 40b is located above and apart from the one of the two air inlets 22a that is located on the front side (+X side). Air drawn into the housing 20 from the air inlet 22a located on the front side passes through the second heat exchange unit 40b and is drawn into the impeller 51 of the fan 50.

[0034] As shown in FIG. 5 , the heat exchanger body 40 includes a heat transfer tube 41 and a plurality of fins 42 attached to the heat transfer tube 41. The heat transfer tube 41 constitutes a part of the circulation path 13. A refrigerant 19 flows through the heat transfer tube 41. One end and the other end of the heat transfer tube 41 are connected to respective pipes included in the pipe bundle 13a. The refrigerant 19 flows from the outdoor unit 12 through the pipes of the pipe bundle 13a into one end of the heat transfer tube 41, and then flows from the other end of the heat transfer tube 41 into other pipes of the pipe bundle 13a and to the outdoor unit 12. When the heat exchanger 90 functions as an evaporator, for example, if the temperature of the refrigerant 19 flowing through the heat transfer tube 41 is low, the refrigerant 19 cools the heat transfer tube 41, which may cause condensation on the surface of the heat transfer tube 41. For example, a plurality of heat transfer tubes 41 may be provided.

[0035] In this embodiment, the heat transfer tube 41 is a tube with a circular cross section. The heat transfer tube 41 is made of, for example, metal. The material of the heat transfer tube 41 is, for example, copper or a copper alloy. The material of the heat transfer tube 41 may also be aluminum or an aluminum alloy. The heat transfer tube 41 has a plurality of extending portions 41a extending in the left-right direction Y and a plurality of folded portions 41b connecting ends of adjacent extending portions 41a in the left-right direction Y. The extending portions 41a are connected by the folded portions 41b, so that the heat transfer tube 41 has a meandering shape that alternately folds back in the left-right direction Y. The extending portions 41a included in the first heat exchange section 40a are arranged side by side at intervals in the first inclined direction D1. The extending portions 41a included in the second heat exchange section 40b are arranged side by side at intervals in the second inclined direction D2.

[0036] The multiple folded portions 41b include folded portion 41b located on the left side (-Y side) and folded portion 41b located on the right side (+Y side). Folded portion 41b located on the left side extends in a U-shape that opens to the right. Folded portion 41b located on the right side extends in a U-shape that opens to the left. Folded portion 41b located on the left side protrudes leftward beyond the multiple fins 42. Folded portion 41b located on the right side protrudes rightward beyond the multiple fins 42.

[0037] The plurality of folded portions 41b located at the left end (-Y side) of the first heat exchanger 40a and the plurality of folded portions 41b located at the right end (+Y side) of the first heat exchanger 40a are arranged side by side at intervals in the first inclined direction D1. The plurality of folded portions 41b located at the left end of the second heat exchanger 40b and the plurality of folded portions 41b located at the right end of the second heat exchanger 40b are arranged side by side at intervals in the second inclined direction D2.

[0038] The fins 42 are arranged side by side in the left-right direction Y with gaps between them. The fins 42 are plate-shaped with their plate surfaces facing the left-right direction Y. The fins 42 are made of metal. The fins 42 are made of a material such as aluminum or an aluminum alloy. As shown in FIG. 3 , each of the fins 42 has a plurality of holes 42a formed therein through which the extensions 41a are passed. The fins 42 are fixed to the extensions 41a passed through the holes 42a, respectively, by brazing, for example.

[0039] The fins 42 include fins 42 that form part of the first heat exchange section 40a and fins 42 that form part of the second heat exchange section 40b. The fins 42 included in the first heat exchange section 40a are generally rectangular plate-shaped and extend in the first inclined direction D1. The fins 42 included in the second heat exchange section 40b are generally rectangular plate-shaped and extend in the second inclined direction D2.

[0040] Air passing through the heat exchanger 90 passes through the gaps between the fins 42. Although not shown in the figure, part of the extension 41a of the heat transfer tube 41 is exposed in the gaps between the fins 42. The air passing through the gaps between the fins 42 hits the part of the extension 41a exposed in the gaps between the fins 42. This allows heat exchange between the air passing through the gaps between the fins 42 and the refrigerant 19 flowing inside the heat transfer tube 41.

[0041] FIG. 6 is a perspective view showing a portion of the heat exchanger 90. FIG. 7 is a perspective view showing the holder 70. FIG. 8 is a perspective view showing the holder 70, where the holder 70 is viewed from an angle different from that of FIG. 7. FIG. 9 is a perspective view showing a portion of the heat exchanger body 40 and a portion of the holder 70. FIG. 10 is a view of a portion of the heat exchanger body 40 and a portion of the holder 70, where the portion is viewed from the left side (-Y side). FIG. 11 is a perspective view showing a portion of the holder 70. FIG. 12 is a perspective view showing a portion of the holder 70, where the portion is viewed from an angle different from that of FIG. 11.

[0042] As shown in FIG. 6, the holder 70 is located on the left side (-Y side) of the heat exchanger body 40. The holder 70 is a member that improves the strength of the heat exchanger 90. The holder 70 is also a member that adjusts the flow of air passing through the heat exchanger body 40 to a suitable flow. The holder 70 is also a member that protects the folded portion 41b. In this embodiment, the holder 70 is made of resin. However, the holder 70 may also be made of metal.

[0043] As shown in FIG. 4 , the holder 70 is located below the sidewall 32 of the air passage member 30. The holder 70 is fixed to the sidewall 32, for example, with bolts. The left end (−Y side) of the space in which the fan 50 is disposed is closed by the sidewall 32 and a fixed wall 70c (described later) of the holder 70. The space in which the fan 50 is disposed is the space located between the heat exchanger body 40 and the air passage member 30 in the vertical direction Z. The space in which the fan 50 is disposed includes the space located between the first heat exchanger section 40a and the second heat exchanger section 40b in the front-rear direction X. Closing the left end of the space in which the fan 50 is disposed prevents air that has passed through the heat exchanger body 40 from leaking from the left end of the space. This allows the air flowing through the heat exchanger body 40 to flow more easily and favorably through the portion of the heat exchanger body 40 in which the fins 42 are disposed. Therefore, heat exchange between the air and the refrigerant 19 can be easily and suitably performed, and the air passing through the heat exchanger body 40 can be easily guided to the blower 50 and flowed into the air passage 31.

[0044] As shown in Figures 6 to 8, the holder 70 has a first holder portion 70a, a second holder portion 70b, and a fixed wall portion 70c. The first holder portion 70a extends in a first inclined direction D1. The second holder portion 70b extends in a second inclined direction D2. In the first holder portion 70a, the first inclined direction D1 is a second direction that intersects with the horizontal direction. In the second holder portion 70b, the second inclined direction D2 is a second direction that intersects with the horizontal direction.

[0045] The first holder portion 70a is located behind (on the -X side of) the second holder portion 70b. The lower end of the first holder portion 70a and the lower end of the second holder portion 70b are connected to each other. The first holder portion 70a and the second holder portion 70b are spaced apart in the front-to-rear direction X as they move upward. The shape of the portion of the holder 70 formed by the first holder portion 70a and the second holder portion 70b when viewed in the left-to-right direction Y is substantially V-shaped, which is substantially the same as the shape of the heat exchanger body 40 when viewed in the left-to-right direction Y. The upper end of the first holder portion 70a is located above the upper end of the second holder portion 70b.

[0046] As shown in Fig. 6, the first holder part 70a is located on the left side (-Y side) of the first heat exchange part 40a. The first holder part 70a is in contact with the leftmost fin 42c of the multiple fins 42 of the first heat exchange part 40a. The second holder part 70b is located on the left side of the second heat exchange part 40b. The second holder part 70b is in contact with the leftmost fin 42c of the multiple fins 42 of the second heat exchange part 40b.

[0047] The first holder portion 70a has a base portion 71, a peripheral wall portion 72, and a plurality of partition wall portions 73. The base portion 71 is plate-shaped with its plate surface facing the left-right direction Y and extending in a first inclined direction D1. The base portion 71 is located on the left side (-Y side) of the heat exchanger body 40. The peripheral wall portion 72 protrudes to the left from the outer peripheral edge of the base portion 71. The base portion 71 and the peripheral wall portion 72 form the first holder portion 70a in a generally rectangular box shape that extends in the first inclined direction D1 and is open to the left. A lower wall portion 72a, which is located at the lowest position of the peripheral wall portion 72, extends generally parallel to the front-rear direction X.

[0048] The partition wall portions 73 are located inside the peripheral wall portion 72. The partition wall portions 73 protrude from the base portion 71 to the left (-Y side). The partition wall portions 73 are provided at intervals in the first inclined direction D1. The partition wall portions 73 as a whole extend in a direction perpendicular to both the left-right direction Y and the first inclined direction D1.

[0049] The multiple partition walls 73 divide the interior of the peripheral wall 72 in a first inclined direction D1 that intersects with the horizontal direction. The base 71, the peripheral wall 72, and the multiple partition walls 73 form multiple storage sections 74 that are aligned in the first inclined direction D1. The storage sections 74 that are adjacent to each other in the first inclined direction D1 are separated by the partition walls 73. In the first holder section 70a of the present embodiment, five partition walls 73 and six storage sections 74 are provided. By providing the partition walls 73, for example, the strength of the first holder section 70a can be ensured even if a wall that surrounds and supports each folded section 41b is not provided for each folded section 41b.

[0050] As shown in FIG. 7 , a through hole 75 is formed in each of the base portions 71 of the multiple housing portions 74. One or two through holes 75 are formed in the base portion 71 of each housing portion 74. As shown in FIG. 6 , one folded portion 41 b passes through each of the through holes 75. At least a portion of the folded portion 41 b that passes through the through hole 75 is housed within the housing portion 74. In the present embodiment, the entire folded portion 41 b that passes through the through hole 75 is housed within the housing portion 74. The left end (-Y side) of the folded portion 41 b that passes through the through hole 75 is located to the right (+Y side) of the left end of the peripheral wall portion 72 and the left end of the partition wall portion 73.

[0051] As shown in Figures 9 and 10, the inner edge of the through hole 75 is spaced apart from the folded portion 41b. A gap is provided between the inner edge of the through hole 75 and the folded portion 41b around the entire circumference surrounding the folded portion 41b. No wall surrounding the folded portion 41b is provided at the periphery of the through hole 75. The folded portion 41b that passes through the through hole 75 is spaced apart from the peripheral wall 72 and the partition wall 73. The distance between the folded portion 41b and the peripheral wall 72 and the distance between the folded portion 41b and the partition wall 73 are greater than the gap between the inner edge of the through hole 75 and the folded portion 41b.

[0052] The plurality of through holes 75 include a first through hole 75a and a second through hole 75b. One first through hole 75a and one second through hole 75b are formed in the base portion 71 of some of the plurality of accommodation portions 74. As shown in Fig. 4, in the first holder portion 70a, the accommodation portions 74 each having one first through hole 75a and one second through hole 75b are three upper accommodation portions 74a of the four accommodation portions 74 located above the drain pan 60 (described later), excluding the accommodation portion 74 located at the uppermost position.

[0053] As shown in FIGS. 11 and 12 , in each upper accommodating portion 74a, the first through hole 75a and the second through hole 75b are arranged side by side in a direction perpendicular to both the left-right direction Y and the first inclined direction D1. The first through hole 75a and the second through hole 75b are elongated holes extending in the first inclined direction D1. The first through hole 75a is located in front of the second through hole 75b (on the +X side). The first through hole 75a is arranged adjacent to the second through hole 75b on a side closer to the blower 50. In each upper accommodating portion 74a, the first through hole 75a is arranged shifted toward the other side (−D1 side) in the first inclined direction D1 than the second through hole 75b. As a result, in each upper accommodating portion 74a, the folded portion 41b inserted through the first through hole 75a is arranged shifted toward the other side in the first inclined direction D1 than the folded portion 41b inserted through the second through hole 75b.

[0054] As shown in FIG. 10, the entire first through hole 75a overlaps with the fin 42 when viewed in the left-right direction Y. A portion of the fin 42c located on the leftmost side (negative Y side) of the multiple fins 42 is exposed through the first through hole 75a except for the portion through which the folded portion 41b is passed. As shown in FIG. 12, the first through hole 75a has a first hole main body portion 75c having an oblong shape that is long in the first inclination direction D1 and a first protruding hole portion 75d that protrudes downward in the vertical direction Z from the lower end of the first hole main body portion 75c. As shown in FIG. 11, the first protruding hole portion 75d is formed in a position that overlaps with a first partition wall portion 73a (described later) of the partition wall portion 73 when viewed in the left-right direction Y.

[0055] As shown in FIG. 10 , the entire second through hole 75b, except for a portion thereof, overlaps with the fin 42 as viewed in the left-right direction Y. A portion of the fin 42c located on the leftmost side (negative Y side) of the multiple fins 42 is exposed through the portion of the second through hole 75b that overlaps with the fin 42 in the left-right direction Y, excluding the portion through which the folded portion 41b is passed. The second through hole 75b has an elongated second hole main body portion 75e extending in the first inclined direction D1 and a second protruding hole portion 75f that protrudes downward and rearward (negative X side) from a lower end of the second hole main body portion 75e in the first inclined direction D1. The portion of the second protruding hole portion 75f away from the second hole main body portion 75e is an outer hole portion 75g located outside the fin 42 as viewed in the left-right direction Y. That is, in this embodiment, the second through hole 75b is a through hole 75 having the outer hole portion 75g. The outer hole portion 75g is formed in a portion of the base portion 71 that is lower than the fins 42 and protrudes rearward.

[0056] As shown in FIG. 7 , the plurality of partition wall portions 73 include first partition wall portions 73a and second partition wall portions 73b. In this embodiment, the first partition wall portions 73a are three partition wall portions 73 located between the uppermost partition wall portion 73 and the lowermost partition wall portion 73 among the five partition wall portions 73. The plurality of first partition wall portions 73a are provided at intervals in the first inclined direction D1. In this embodiment, the second partition wall portion 73b is the lowermost partition wall portion among the five partition wall portions 73. The second partition wall portion 73b is located lower in the vertical direction Z than the plurality of first partition wall portions 73a.

[0057] The first partition wall portion 73a is a partition wall portion 73 that constitutes a wall portion on the other side (-D1 side) in the first inclined direction D1 of the upper accommodating portion 74a in which the first through hole 75a and the second through hole 75b are formed in the base portion 71. As shown in Fig. 4, in the first holder portion 70a, the entire first partition wall portion 73a is located above the upper end of the drain pan 60, which will be described later. As shown in Figs. 10 and 11, the first partition wall portion 73a has first inclined wall portions 73c and 73d and a second inclined wall portion 73e.

[0058] The first inclined wall portion 73c extends in a direction perpendicular to both the left-right direction Y and the first inclined direction D1. An upper, front (+X side) end of the first inclined wall portion 73c is connected to an upper, front wall portion of the peripheral wall portion 72. The first inclined wall portion 73c is positioned lower toward the rear (-X side). The first inclined wall portion 73d extends obliquely upward and rearward from the lower, rear end of the first inclined wall portion 73c. ​​The first inclined wall portion 73d extends perpendicular to the left-right direction Y and in a direction intersecting the front-rear direction X, the vertical direction Z, and the first inclined direction D1. The first inclined wall portion 73d is positioned lower toward the front. The first inclined wall portion 73c and the first inclined wall portion 73d extend downward in the vertical direction Z toward a first through portion 78 (described later).

[0059] The second inclined wall portion 73e extends obliquely downward and rearward from the upper rear (-X side) end of the first inclined wall portion 73d. The second inclined wall portion 73e extends in the same direction as the first inclined wall portion 73c. ​​That is, the second inclined wall portion 73e extends in a direction perpendicular to both the left-right direction Y and the first inclined direction D1. The second inclined wall portion 73e is positioned lower toward the rear. The second inclined wall portion 73e extends downward in the vertical direction Z toward a second through-hole 79 (described later). The lower rear end of the second inclined wall portion 73e is connected to the lower rear wall portion of the peripheral wall portion 72. The second inclined wall portion 73e is positioned closer to one side (+D1 side) in the first inclined direction D1 than the first inclined wall portion 73c.

[0060] 9, the first partition wall portion 73a has a first through portion 78 formed therein as a through portion penetrating the first partition wall portion 73a. The first through portion 78 is a through portion formed in a portion of the first partition wall portion 73a that overlaps with the fin 42 when viewed in the left-right direction Y. In the present embodiment, the first through portion 78 is formed at a connection portion between the first inclined wall portion 73c and the first inclined wall portion 73d, straddling the first inclined wall portion 73c and the first inclined wall portion 73d. The first through portion 78 penetrates the first inclined wall portion 73c and the first inclined wall portion 73d in the vertical direction Z at the connection portion between the first inclined wall portion 73c and the first inclined wall portion 73d.

[0061] The first through portion 78 is formed at the end of the first partition wall portion 73a on the side connected to the base portion 71, i.e., on the side (+Y side) where the fin 42 is located in the left-right direction Y. As shown in FIG. 12 , the first through portion 78 is connected to the first protruding hole portion 75d of the first through hole 75a. This connects the first through portion 78 to the through hole 75. In the present embodiment, the first through portion 78 is a hole in which both the portion formed in the first inclined wall portion 73c and the portion formed in the first inclined wall portion 73d are rectangular.

[0062] 10 and 11, the first partition wall portion 73a is formed with a second through portion 79 as a through portion penetrating the first partition wall portion 73a. The second through portion 79 is a through portion formed in a portion of the first partition wall portion 73a that is located outside the fins 42 when viewed in the left-right direction Y. In the present embodiment, the second through portion 79 is formed in an end portion of the second inclined wall portion 73e that is connected to the peripheral wall portion 72. The second through portion 79 penetrates the end portion of the second inclined wall portion 73e that is connected to the peripheral wall portion 72 in the first inclined direction D1.

[0063] The second through portion 79 is formed at an end of the first partition wall portion 73a opposite to the side connected to the base portion 71, i.e., at an end on the side (-Y side) opposite to the side on which the fin 42 is located in the left-right direction Y. The second through portion 79 opens to the left (-Y side). As shown in FIG. 10 , the second through portion 79 is formed at a position adjacent to the other side (-D1 side) of the outer hole portion 75g in the first inclination direction D1 when viewed in the left-right direction Y. The second through portion 79 is formed spaced apart from the outer hole portion 75g in the left-right direction Y. In other words, the second through portion 79 is disposed spaced apart to the left of the outer hole portion 75g. The second through portion 79 is not connected to the through hole 75. In the present embodiment, the second through portion 79 is a rectangular notch.

[0064] As shown in FIG. 9 , the second partition wall portion 73b has inclined wall portions 73f, 73g, and 73h. The inclined wall portion 73f extends in a direction perpendicular to both the left-right direction Y and the first inclined direction D1. An upper, front (+X side) end of the inclined wall portion 73f is connected to an upper, front wall portion of the peripheral wall portion 72. The inclined wall portion 73f is positioned lower toward the rear (-X side). The inclined wall portion 73g extends obliquely downward and rearward from the lower, rear end of the inclined wall portion 73f. The inclined wall portion 73g extends in a direction slightly inclined toward the vertical direction Z with respect to the front-rear direction X. The inclined wall portion 73h extends obliquely downward and rearward from the lower, rear end of the inclined wall portion 73g. The inclined wall portion 73h extends in the same direction as the inclined wall portion 73f. The inclined wall portion 73h is positioned lower toward the rear. A lower and rear end of the inclined wall portion 73h is connected to the lower and rear wall portion of the peripheral wall portion 72. The inclined wall portion 73h is positioned closer to one side (+D1 side) in the first inclination direction D1 than the inclined wall portion 73f.

[0065] Unlike the first partition wall portion 73a, the second partition wall portion 73b does not have a through-hole formed therethrough. In the first holder portion 70a of the present embodiment, a through-hole penetrating the partition wall portion 73 is formed only in the first partition wall portion 73a among the multiple partition wall portions 73. As shown in FIG. 4, the lower portion of the second partition wall portion 73b is located below the upper end of a drain pan 60 (described later). The lower portion of the second partition wall portion 73b is located within the drain pan 60. The upper portion of the second partition wall portion 73b is located above the upper end of the drain pan 60.

[0066] As shown in FIG. 11 , the first holder part 70a has an engagement part 76 connected to the inner edge of the through hole 75. The engagement part 76 has an arm part 76a extending from the inner edge of the through hole 75 and a claw part 76b connected to the tip of the arm part 76a. In this embodiment, the arm part 76a extends from an upper part of the inner edge of the through hole 75 to the rear side (-X side) and then curves downward and forward (+X side) along the inner edge of the through hole 75. When viewed in the left-right direction Y, the arm part 76a has a U-shape that opens to the other side (-D1 side) in the first inclination direction D1. The arm part 76a is elastically deformable. More specifically, the arm part 76a can be elastically deformed rearward and downward when pressed from the right side (+Y side).

[0067] The claw portion 76b protrudes from the tip of the arm portion 76a toward the inside of the through hole 75 when viewed in the left-right direction Y. The claw portion 76b overlaps with approximately the center of the through hole 75 in the first inclination direction D1 when viewed in the left-right direction Y. As shown in FIG. 9, the claw portion 76b is hooked onto the folded portion 41b from the right side (+Y side). This causes the holder 70 to be hooked onto the heat exchanger body 40 in the left-right direction Y, and the holder 70 is attached to the heat exchanger body 40.

[0068] In the present embodiment, the engagement portions 76 are provided only in some of the through holes 75 among the plurality of through holes 75. The engagement portions 76 are provided in three first through holes 75a among the plurality of through holes 75 and in the through hole 75 located on the front side (+X side) of the two through holes 75 formed in the accommodation portion 74 located at the lowest side.

[0069] 4, the second holder portion 70b has a shape that is roughly the same as that of the first holder portion 70a, but inverted in the front-rear direction X. The second holder portion 70b has portions that correspond to the base portion 71, peripheral wall portion 72, partition wall portion 73, storage portion 74, through-hole 75, and engagement portion 76 of the first holder portion 70a. These portions of the second holder portion 70b have a shape that is inverted in the front-rear direction X relative to the portions of the first holder portion 70a.

[0070] The second holder portion 70b has three partition wall portions. Of the three partition wall portions in the second holder portion 70b, the two partition wall portions excluding the uppermost partition wall portion are first partition wall portions. The first partition wall portion in the second holder portion 70b has a shape obtained by inverting the first partition wall portion 73a in the first holder portion 70a in the front-rear direction X. The partition wall portion in the second holder portion 70b does not include a partition wall portion corresponding to the second partition wall portion 73b in the first holder portion 70a. The second holder portion 70b has two accommodating portions corresponding to the upper accommodating portion 74a in the first holder portion 70a, where the first through hole 75a and the second through hole 75b are formed. Of the two accommodating portions, an engaging portion of the second holder portion 70b is provided in each of the through holes corresponding to the first through hole 75a.

[0071] In the second holder part 70b, the direction corresponding to the first inclination direction D1 of the first holder part 70a is the second inclination direction D2. In the description of the effects and the like to be described later, the effects of the first holder part 70a will be described as a representative example, and a description of the effects of the second holder part 70b may be omitted.

[0072] As shown in FIG. 6, the fixed wall portion 70c is located above the first holder portion 70a and the second holder portion 70b. The fixed wall portion 70c connects the first holder portion 70a and the second holder portion 70b in the front-rear direction X. When viewed in the left-right direction Y, the fixed wall portion 70c has a generally triangular shape with a corner on the lower side. A recess 77f that is recessed downward is formed in the center of the upper edge of the fixed wall portion 70c in the front-rear direction X. The inner edge of the recess 77f has an arc shape that is concave downward and centered on the rotation axis R of the blower 50. The fixed wall portion 70c has a plate portion 77a, an edge wall portion 77b, a vertical rib portion 77c, a first inclined rib portion 77d, and a second inclined rib portion 77e.

[0073] The plate portion 77a has a generally triangular shape with a corner on the lower side when viewed in the left-right direction Y. The edge wall portion 77b protrudes to the left (-Y side) from the upper edge of the plate portion 77a. The edge wall portion 77b extends in the front-rear direction X. The vertical rib portion 77c protrudes to the left from the plate portion 77a and extends in the vertical direction Z. The vertical rib portion 77c connects the edge wall portion 77b to the peripheral wall portion 72 of the first holder portion 70a or the peripheral wall portion of the second holder portion 70b. A plurality of vertical ribs 77c are provided at intervals in the front-rear direction X.

[0074] The first inclined rib portion 77d protrudes to the left (-Y side) from a portion of the plate portion 77a that is located above the first holder portion 70a. The first inclined rib portion 77d extends in a first inclined direction D1. A plurality of first inclined rib portions 77d are provided at intervals in the vertical direction Z. The first inclined rib portions 77d intersect with the vertical rib portions 77c.

[0075] The second inclined rib portion 77e protrudes to the left (-Y side) from a portion of the plate portion 77a that is located above the second holder portion 70b. The second inclined rib portion 77e extends in a second inclined direction D2. A plurality of second inclined rib portions 77e are provided at intervals in the vertical direction Z. The second inclined rib portions 77e intersect with the vertical rib portion 77c.

[0076] 4, the shape of the upper edge of the fixed wall portion 70c is a shape that follows the shape of the lower edge of the side wall portion 32 of the air passage member 30. The upper edge of the fixed wall portion 70c is in contact with the lower edge of the side wall portion 32. Both end portions of the fixed wall portion 70c in the front-rear direction X are fixed to the side wall portion 32, for example, by bolts.

[0077] The indoor unit 11 is equipped with a drain pan 60 located below the heat exchanger 90. The drain pan 60 is capable of receiving condensation water that forms on the surface of the heat exchanger body 40. The condensation water that accumulates in the drain pan 60 is discharged to the outside by a drain pump (not shown). The dimension of the drain pan 60 in the front-to-rear direction X is larger than the dimension of the heat exchanger 90 in the front-to-rear direction X. The drain pan 60 is a tray-shaped member that opens upward.

[0078] 13 is a partial cross-sectional perspective view showing a part of the heat exchanger 90 and a part of the drain pan 60. As shown in FIG. 13, the drain pan 60 has a receiving portion 61 located below the holder 70. The receiving portion 61 extends in the front-rear direction X. A side wall portion 61a of the receiving portion 61 located on the side (+Y side) closer to the center of the heat exchanger 90 in the left-right direction Y is located slightly closer to the fins 42 (+Y side) than the base portion 71 of the holder 70 in the left-right direction Y. The side wall portion 61a is located below the fin 42 that is located closest to the holder 70 among the multiple fins 42.

[0079] Although not shown, the drain pan 60 has a receiving portion located below the connection between the first heat exchange portion 40a and the second heat exchange portion 40b and extending in the left-right direction Y, and a receiving portion located below the end of the right side (+Y side) of the heat exchanger body 40 and extending in the front-rear direction X. These two receiving portions and the above-mentioned receiving portion 61 give the drain pan 60 a substantially H-shaped configuration when viewed in the vertical direction Z.

[0080] According to this embodiment, the holder 70 includes a base 71 located on the left side (-Y side) of the heat exchanger body 40, a peripheral wall 72 protruding leftward from the outer peripheral edge of the base 71, and a partition wall 73 dividing the interior of the peripheral wall 72 in a first inclined direction D1 intersecting the horizontal direction. The base 71, the peripheral wall 72, and the partition wall 73 form a plurality of storage sections 74 aligned in the first inclined direction D1. Each of the bases 71 in the plurality of storage sections 74 is formed with a through hole 75 through which the folded portion 41b passes. The inner edge of the through hole 75 is positioned away from the folded portion 41b. This prevents condensation water formed on the surface of the folded portion 41b from accumulating between the folded portion 41b and the inner edge of the through hole 75, making it easier to discharge the condensation water to the outside of the storage section 74 via the through hole 75. The condensed water discharged from the through hole 75 comes into contact with the surface of the fin 42c, which is located closest to the holder 70 among the fins 42, and flows downward along the fin 42c in the vertical direction Z and into the drain pan 60.

[0081] Furthermore, according to the present embodiment, the partition wall 73 includes a first partition wall 73a. The first partition wall 73a is formed with a first through portion 78 and a second through portion 79 as through portions penetrating the first partition wall 73a. Therefore, even if at least a portion of the condensation water formed on the surface of the folded portion 41b flows onto the first partition wall 73a without flowing into the through hole 75, the condensation water that has flowed onto the first partition wall 73a can be discharged from inside the storage portion 74 downward in the vertical direction Z via the first through portion 78 or the second through portion 79.

[0082] As described above, according to the present embodiment, condensation water formed on the surface of the folded portion 41b can be discharged to the outside of the accommodation portion 74 through the through-hole 75 or each through-hole. This prevents condensation water from remaining in the accommodation portion 74 of the holder 70. This prevents condensation water from continuously contacting the folded portion 41b in the accommodation portion 74, and effectively prevents corrosion of the folded portion 41b. This effectively prevents leakage of the refrigerant 19 from the heat transfer tube 41. This improves the life of the heat exchanger 90.

[0083] At least a portion of the condensation water discharged downward from within the storage portion 74 through the first through-hole 78 or the second through-hole 79 is discharged from the through-hole 75 in another storage portion 74 located below the storage portion 74, and flows, for example, along the fins 42 as described above, into the drain pan 60. In addition, the condensation water discharged downward from within the storage portion 74 through the first through-hole 78 or the second through-hole 79 may accumulate on the wall of the other storage portion 74 located below the storage portion 74, then overflow to the left side (-Y side), and may flow along the heat exchanger 90 into the drain pan 60.

[0084] Furthermore, the condensed water that has flowed onto the first partition wall portion 73a may spill from the first partition wall portion 73a to the left side (-Y side) and be discharged from the storage portion 74. In this case, if a large amount of condensed water spills from the first partition wall portion 73a to the left side, the condensed water may scatter and fall off the drain pan 60. In contrast, according to the present embodiment, the first through-portion 78 or the second through-portion 79 makes it easy to discharge the condensed water that has flowed onto the first partition wall portion 73a, thereby preventing the amount of condensed water that spills from the first partition wall portion 73a to the left side from increasing. As a result, even if some of the condensed water spills from the first partition wall portion 73a to the left side, the condensed water can be prevented from scattering, and the condensed water can be prevented from being unable to be collected by the drain pan 60.

[0085] Furthermore, according to the present embodiment, the through-portions formed in the first partition wall portion 73a include first through-portions 78 formed in portions of the first partition wall portion 73a that overlap with the fins 42 as viewed in the left-right direction Y. The first through-portions 78 are formed in the end portion of the first partition wall portion 73a that is connected to the base 71, and are connected to the through-holes 75. Therefore, condensation water flowing from above the first partition wall portion 73a to the first through-portions 78 can easily flow to the portions of the through-holes 75 that are connected to the first through-portions 78. Furthermore, because the first through-portions 78 overlap with the fins 42 as viewed in the left-right direction Y, condensation water discharged from the portions of the through-holes 75 that are connected to the first through-portions 78 can be brought into favorable contact with the fins 42. This allows condensation water discharged from the portions of the through-holes 75 that are connected to the first through-portions 78 to flow along the surfaces of the fins 42 downward in the vertical direction Z and flow into the drain pan 60.

[0086] Furthermore, according to the present embodiment, the first partition wall portion 73a has first inclined wall portions 73c, 73d that extend downward in the vertical direction Z toward the first through portion 78. Therefore, condensation water that has flowed onto the first inclined wall portions 73c, 73d of the first partition wall portion 73a can be guided by gravity along the first inclined wall portions 73c, 73d to the first through portion 78. This makes it easier to discharge the condensation water from the first through portion 78 or the portion of the through hole 75 that is connected to the first through portion 78.

[0087] Furthermore, according to the present embodiment, the through-holes formed in the first partition wall portion 73a include second through-holes 79 formed in a portion of the first partition wall portion 73a that is located outside the fins 42 as viewed in the left-right direction Y. The through-hole 75 includes a second through-hole 75b having an outer hole portion 75g that is located outside the fins 42 as viewed in the left-right direction Y. The second through-hole 79 is formed away from the outer hole portion 75g in the left-right direction Y. Therefore, the outer hole portion 75g does not connect with the second through-hole 75b to form a large hole. As a result, the second through-hole 79 and the outer hole portion 75g make it easier to discharge condensed water from inside the storage portion 74, while making it more difficult for condensed water discharged from the outer hole portion 75g to splash from the outer hole portion 75g.

[0088] 13, if the outer hole 75g is located below the fins 42 and opens toward the center (+Y side) in the left-right direction Y of the heat exchanger body 40, and condensation water splashes out from the outer hole 75g, the splashed condensation water may fly further toward the center (+Y side) in the left-right direction Y of the heat exchanger body 40 than the side wall portion 61a of the receiving portion 61 of the drain pan 60, and the splashed condensation water may not be collected by the drain pan 60. In contrast, according to the present embodiment, condensation water is less likely to splash out from the outer hole 75g as described above, and therefore the condensation water discharged from the outer hole 75g can be prevented from falling out of the drain pan 60. The condensed water discharged from the outer hole 75g flows downward in the vertical direction Z along the surface of the holder 70 or the surface of the fins 42, and flows into a receiving portion of the drain pan 60 that is located below the connection between the first heat exchanger 40a and the second heat exchanger 40b. In this way, the condensed water discharged from the outer hole 75g can be suitably collected by the drain pan 60.

[0089] Furthermore, according to the present embodiment, second through-portion 79 is formed at the end of first partition wall portion 73a on the side opposite to the side connected to base portion 71 (-Y side), and opens to the left side (-Y side). This allows second through-portion 79 to be suitably spaced apart from outer hole portion 75g. Furthermore, the protruding height of first partition wall portion 73a can be reduced in the area where second through-portion 79 is formed, making it difficult for condensed water discharged through second through-portion 79 to splash to the left side (-Y side). This prevents condensed water discharged through second through-portion 79 from being left uncollected by drain pan 60.

[0090] Furthermore, according to the present embodiment, the first partition wall portion 73a has a second inclined wall portion 73e that extends downward in the vertical direction Z toward the second through-hole 79. Therefore, condensation water that has flowed onto the second inclined wall portion 73e of the first partition wall portion 73a can be guided by gravity along the second inclined wall portion 73e to the second through-hole 79. This makes it easier to drain the condensation water from the second through-hole 79.

[0091] Furthermore, according to the present embodiment, the first partition wall portions 73a are provided at intervals in the first inclined direction D1. The partition wall portions 73 include the second partition wall portion 73b located lower in the vertical direction Z than the first partition wall portions 73a. The through-holes, including the first through-hole 78 and the second through-hole 79, are formed only in the first partition wall portion 73a among the partition wall portions 73. In other words, no through-holes are formed in the second partition wall portion 73b. This makes it easier to manufacture the holder 70 than if through-holes were formed in all of the partition wall portions 73. Furthermore, the second partition wall portion 73b is located lower in the vertical direction Z than the first partition wall portion 73a, and is therefore positioned closer to the drain pan 60 than the first partition wall portion 73a. This prevents the second partition wall portion 73b from coming off the drain pan 60 even when condensation water spills over the second partition wall portion 73b. Therefore, even if no through-hole is formed in the second partition wall portion 73b, it is possible to prevent the condensed water from being unable to be collected by the drain pan 60.

[0092] Furthermore, according to this embodiment, the holder 70 has an engaging portion 76 connected to the inner edge of the through hole 75. The engaging portion 76 includes an elastically deformable arm portion 76a extending from the inner edge of the through hole 75, and a claw portion 76b connected to the tip of the arm portion 76a and hooking onto the folded portion 41b from the right side (+Y side). Therefore, the claw portion 76b can prevent the holder 70 from coming off the heat exchanger body 40 in the left-right direction Y. Furthermore, when attaching the holder 70 to the heat exchanger body 40, when the folded portion 41b is inserted from the right side into the through hole 75 having the engaging portion 76 provided on its inner edge, the claw portion 76b is pressed by the folded portion 41b, causing the arm portion 76a to elastically deform. This allows the folded portion 41b to be easily inserted into the through hole 75 having the engaging portion 76 provided on its inner edge. When the folded portion 41b is inserted all the way in and the claw portion 76b is no longer in contact with the folded portion 41b, the arm portion 76a is restored to its original shape, causing the claw portion 76b to enter the inside of the folded portion 41b and hook onto the folded portion 41b from the right side. Thus, according to this embodiment, simply inserting the folded portion 41b into the through-hole 75 allows the claw portion 76b to easily hook onto the folded portion 41b. This makes it easy to attach the holder 70 to the heat exchanger body 40.

[0093] Although the embodiments of the present disclosure have been described above, the present disclosure is not limited to the configurations of the above-described embodiments, and the following configurations and methods may also be adopted.

[0094] The number of partition wall portions is not particularly limited as long as it is one or more. The second direction in which the partition wall portions divide the interior of the peripheral wall portion is not particularly limited as long as it is a direction that intersects with the horizontal direction. The second direction may be a vertical direction. The number of first partition wall portions is not particularly limited as long as it is one or more. All of the partition wall portions may be first partition wall portions.

[0095] The number of through-holes formed in the first partition wall portion may be one or three or more. When a plurality of first partition wall portions are provided, the plurality of first partition wall portions may include two or more first partition wall portions having different numbers of through-holes formed therein. The through-hole formed in the first partition wall portion may be only one of the first through-hole and the second through-hole. Even in this case, condensed water in the storage portion can be easily and suitably discharged through the through-hole, and condensed water can be prevented from accumulating in the storage portion. When a plurality of first partition wall portions are provided, the plurality of first partition wall portions may include a first partition wall portion having only the first through-hole formed therein and a first partition wall portion having only the second through-hole formed therein. A plurality of first through-holes may be formed in one first partition wall portion. A plurality of second through-holes may be formed in one first partition wall portion. The through-holes formed in the first partition wall portion may include through-holes other than the first through-hole and the second through-hole. The shape of the through-hole formed in the first partition wall is not particularly limited.

[0096] The folded portion that is passed through the through hole and accommodated in the accommodation portion may be at least partially positioned inside the accommodation portion, or partially positioned outside the accommodation portion. The holder does not need to be in contact with the fins. For example, in the above-described embodiment, the base 71 may face the fin 42c that is positioned on the leftmost side (-Y side) of the multiple fins 42, with a gap therebetween.

[0097] The engaging portion of the holder may have any shape. The number of engaging portions is not particularly limited. The holder may not have any engaging portion. The holder may be fixed to the heat exchanger body. The shape of the heat exchanger body is not particularly limited. For example, in the above-described embodiment, the heat exchanger body 40 may not have either the first heat exchange portion 40a or the second heat exchange portion 40b.

[0098] The heat exchanger body may be configured with a single heat transfer tube or multiple heat transfer tubes. When multiple heat transfer tubes are used, multiple turn-back portions may be provided, one for each heat transfer tube.

[0099] A heat exchanger according to the present disclosure, i.e., a heat exchange unit including a heat exchanger having a through-hole formed in the first partition wall of a holder, may be an outdoor unit of an air conditioner. In an air conditioner according to the present disclosure, both the indoor unit and the outdoor unit may be heat exchange units including a heat exchanger according to the present disclosure, or only one of the indoor unit and the outdoor unit may be a heat exchanger unit including a heat exchanger according to the present disclosure. The indoor unit including a heat exchanger according to the present disclosure may be any type of indoor unit, and may be a wall-mounted indoor unit or a floor-standing indoor unit.

[0100] The configurations and methods described in this specification can be combined as appropriate within the scope of not contradicting each other. [Explanation of symbols]

[0101] 10...Air conditioner, 11...Indoor unit (heat exchange unit), 12...Outdoor unit, 40...Heat exchanger body, 41...Heat transfer tube, 41a...Extension portion, 41b...Folded portion, 42, 42c...Fin, 50...Blower, 70...Holder, 71...Base portion, 72...Peripheral wall portion, 73...Partition wall portion, 73a...First partition wall portion, 73b...Second partition wall portion, 73c, 73d...First inclined wall portion , 73e...second inclined wall portion, 74...accommodation portion, 74a...upper accommodation portion (accommodation portion), 75...through hole, 75g...outer hole portion, 76...engagement portion, 76a...arm portion, 76b...claw portion, 78...first through portion, 79...second through portion, 90...heat exchanger, D1...first inclined direction (second direction), D2...second inclined direction (second direction), Y...left-right direction (first direction), Z...vertical direction

Claims

1. A heat exchanger provided in an air conditioner, a heat exchanger body having a heat transfer tube and a plurality of fins attached to the heat transfer tube, the heat exchanger body extending in a first direction intersecting with a vertical direction; a holder attached to one end of the heat exchanger body on one side in the first direction; Equipped with The heat transfer tube is a plurality of extension portions extending in the first direction; a plurality of folded portions connecting ends of adjacent extension portions in the first direction; and The holder is a base portion located on one side of the heat exchanger body in the first direction; a peripheral wall portion protruding from an outer peripheral edge portion of the base portion to one side in the first direction; at least one partition wall portion that partitions the interior of the peripheral wall portion in a second direction that intersects with the horizontal direction; and a plurality of storage sections arranged in the second direction are formed by the base section, the peripheral wall section, and the at least one partition wall section; a through hole through which the folded portion is passed is formed in each of the base portions of the plurality of housing portions; an inner edge of the through hole is spaced apart from the folded portion; the at least one partition wall portion includes a first partition wall portion, The heat exchanger, wherein the first partition wall portion has at least one through-portion formed therein.

2. the at least one through-hole includes a first through-hole formed in a portion of the first partition wall that overlaps with the fin when viewed in the first direction, The heat exchanger according to claim 1 , wherein the first through portion is formed at an end of the first partition wall portion that is connected to the base portion, and is connected to the through hole.

3. The heat exchanger according to claim 2 , wherein the first partition wall portion has a first inclined wall portion extending downward in the vertical direction toward the first penetration portion.

4. the at least one through-hole includes a second through-hole formed in a portion of the first partition wall portion that is positioned outside the fin when viewed in the first direction, the through holes include through holes having outer hole portions located outside the fins when viewed in the first direction, The heat exchanger according to claim 1 , wherein the second through-portion is formed away from the outer hole portion in the first direction.

5. The heat exchanger according to claim 4 , wherein the second through portion is formed at an end of the first partition wall portion opposite to the end connected to the base portion, and opens to one side in the first direction.

6. The heat exchanger according to claim 4 , wherein the first partition wall portion has a second inclined wall portion extending downward in the vertical direction toward the second penetration portion.

7. The partition wall portion is provided in plurality at intervals in the second direction, The first partition wall portion is provided in plurality at intervals in the second direction, the plurality of partition wall portions include second partition wall portions located vertically below the plurality of first partition wall portions, The heat exchanger according to claim 1 , wherein the through-portion is formed only in the first partition wall portion among the plurality of partition wall portions.

8. the holder has an engagement portion connected to an inner edge of the through hole, The engagement portion is an elastically deformable arm portion extending from an inner edge of the through hole; a claw portion connected to the tip end of the arm portion and hooked onto the folded portion from the other side in the first direction; The heat exchanger of claim 1 , wherein

9. A heat exchanger according to any one of claims 1 to 8; a blower for sending air to the heat exchanger; A heat exchange unit comprising:

10. An indoor unit, The outdoor unit and Equipped with An air conditioner, wherein at least one of the indoor unit and the outdoor unit is the heat exchange unit according to claim 9.

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