Heat exchanger and air pipe type air conditioning device

Abstract

The utility model relates to the technical field of air conditioners, and discloses a heat exchanger which comprises fins and heat exchange tubes arranged on the fins in a penetrating mode, and each fin comprises an upper fin section, a middle fin section and a lower fin section. The straight line where the first upper heat exchange holes and the first middle heat exchange holes are located is a first heat exchange hole straight line, the straight line where the second upper heat exchange holes and the second middle heat exchange holes are located is a second heat exchange hole straight line, the included angle between the first heat exchange hole straight line and the second heat exchange hole straight line is beta 1, and beta 1 is larger than or equal to 10 degrees and smaller than or equal to 60 degrees. According to the heat exchanger, the overall heat exchange efficiency of the heat exchanger is improved. Meanwhile, the utility model further discloses an air pipe type air conditioner device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household appliances, for example to a heat exchanger and a ducted air conditioning device. BACKGROUND

[0002] In an air conditioner, the heat exchanger includes an evaporator and a condenser, which is a main structural component of energy consumption of the air conditioner, and the performance of the heat exchanger directly affects the energy consumption level of the air conditioner. The finned tube heat exchanger is widely used in wall-mounted, floor-standing and ducted household air conditioners, and the air side thermal resistance outside the tube usually accounts for 70%-90% of the total thermal resistance, which determines the advantages and disadvantages of the performance of the entire heat exchanger.

[0003] In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

[0004] Taking the indoor unit of a ducted air conditioner as an example, an I-shaped oblique heat exchanger is usually used. However, in the case of non-uniform wind field distribution, the existing heat exchanger structure causes the high wind speed area formed by the indoor fan to have insufficient heat exchange area, and the low wind speed area has redundant heat exchange area, so that the performance of the heat exchanger cannot be fully utilized, and the heat exchange efficiency of the heat exchanger is reduced.

[0005] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present application, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. CONTENT OF THE UTILITY MODEL

[0006] In order to have a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not a general review, nor is it intended to determine key / important components or delineate the scope of protection of these embodiments, but as a prelude to the detailed description below.

[0007] The embodiments of the present disclosure provide a heat exchanger and a ducted air conditioning device, which improve the overall heat exchange efficiency of the heat exchanger.

[0008] In some embodiments, the heat exchanger comprises fins and heat exchange tubes passing through the fins, wherein the fins comprise: an upper fin section comprising an upper fin area formed by an upper leeward edge and an upper windward edge, the upper fin area comprising a first upper heat exchange hole near the middle fin area and near the upper leeward edge, and a second upper heat exchange hole near the middle fin area and near the upper windward edge; a middle fin section disposed below the upper fin section, the middle fin section comprising a middle fin area formed by a middle leeward edge and a middle windward edge, the middle fin area comprising a first middle heat exchange hole near the upper fin area and near the middle leeward edge, and a second middle heat exchange hole near the upper fin area and near the middle windward edge; and a lower fin section disposed below the middle fin section, the lower fin section comprising a lower fin area formed by a lower leeward edge and a lower windward edge, wherein a straight line where the first upper heat exchange hole and the first middle heat exchange hole are located is a first heat exchange hole straight line, a straight line where the second upper heat exchange hole and the second middle heat exchange hole are located is a second heat exchange hole straight line, an included angle between the first heat exchange hole straight line and the second heat exchange hole straight line is β1, and 10°≤β1≤60°.

[0009] In some optional embodiments, a straight line where the first middle heat exchange hole and the second middle heat exchange hole are located is a third heat exchange hole straight line, wherein the middle fin area further comprises a third middle heat exchange hole located between the first middle heat exchange hole and the second middle heat exchange hole, and the third middle heat exchange hole is located below the third heat exchange hole straight line.

[0010] In some optional embodiments, the upper fin area further comprises a third upper heat exchange hole near the first upper heat exchange hole, wherein the third upper heat exchange hole is located on the first heat exchange hole straight line.

[0011] In some optional embodiments, 10°≤β1≤30°.

[0012] In some optional embodiments, a straight line where the first middle heat exchange hole and the second middle heat exchange hole are located is a third heat exchange hole straight line, wherein the middle fin area further comprises a third middle heat exchange hole located between the first middle heat exchange hole and the second middle heat exchange hole, and the third middle heat exchange hole is located on the third heat exchange hole straight line.

[0013] In some optional embodiments, the upper fin area further comprises a third upper heat exchange hole near the first upper heat exchange hole, wherein the third upper heat exchange hole is located on the second heat exchange hole straight line.

[0014] In some optional embodiments, 25°≤β1≤50°.

[0015] In some optional embodiments, the upper fin segment, the middle fin segment and the lower fin segment constitute a fin in an arc shape; or, the extension length of the upper fin segment is greater than or equal to the extension length of the lower fin segment; or, the upper fin segment comprises an upper leeward edge, and the lower fin segment comprises a lower leeward edge, wherein the included angle between the upper leeward edge and the middle leeward edge of the middle fin segment is greater than or equal to the included angle between the lower leeward edge and the middle leeward edge of the middle fin segment; or, the upper fin segment comprises a straight upper leeward edge and an upper windward edge, the middle fin segment comprises a straight middle leeward edge and a middle windward edge, and the lower fin segment comprises a straight lower leeward edge and a lower windward edge; or, the edge on the windward side of the fin coincides with the edge on the leeward side.

[0016] In some optional embodiments, a first connecting position is arranged between the upper fin segment and the middle fin segment, and a second connecting position is arranged between the middle fin segment and the lower fin segment, wherein the first connecting position is in an arc shape or a straight line shape; or, the second connecting position is in an arc shape or a straight line shape.

[0017] In some embodiments, the duct type air conditioning device comprises: an indoor unit shell, internally provided with a containing space; an indoor fan, arranged in the containing space; and a heat exchanger, arranged in the containing space and on the exhaust side of the indoor fan, wherein the heat exchanger is the heat exchanger as described above.

[0018] The heat exchanger and the duct type air conditioning device provided by the embodiments of the present disclosure can achieve the following technical effects:

[0019] The heat exchanger comprises a fin and a heat exchange pipe penetrating through the fin, wherein the fin comprises an upper fin segment, a middle fin segment and a lower fin segment. The upper fin segment comprises an upper fin area formed by an upper leeward edge and an upper windward edge, the upper fin area comprises a first upper heat exchange hole close to the middle fin area and close to the upper leeward edge, and a second upper heat exchange hole close to the middle fin area and close to the upper windward edge; the middle fin segment is arranged below the upper fin segment, the middle fin segment comprises a middle fin area formed by a middle leeward edge and a middle windward edge, the middle fin area comprises a first middle heat exchange hole close to the upper fin area and close to the middle leeward edge, and a second middle heat exchange hole close to the upper fin area and close to the middle windward edge; the lower fin segment is arranged below the middle fin segment, and the lower fin segment comprises a lower fin area formed by a lower leeward edge and a lower windward edge. Wherein, the straight line where the first upper heat exchange hole and the first middle heat exchange hole are located is a first heat exchange hole straight line, the straight line where the second upper heat exchange hole and the second middle heat exchange hole are located is a second heat exchange hole straight line, the included angle between the first heat exchange hole straight line and the second heat exchange hole straight line is β1, and 10°≤β1≤60°.

[0020] The heat exchanger provided by the embodiments of the present disclosure matches the shape of the fins of the heat exchanger with the uneven distribution of the air speed in the air duct, and improves the heat exchange efficiency of the heat exchanger.

[0021] The foregoing general description and the following description are merely exemplary and explanatory, and are not intended to limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0022] One or more embodiments are illustrated by way of example with reference to the accompanying drawings, which are schematic and are not intended to be limiting of the embodiments, in which like reference numerals refer to like elements in the various figures and in which:

[0023] Figure 1 is a structural schematic diagram of a heat exchanger provided by an embodiment of the present disclosure;

[0024] Figure 2 is a structural schematic diagram of another heat exchanger provided by an embodiment of the present disclosure;

[0025] Figure 3 is a structural schematic diagram of another heat exchanger provided by an embodiment of the present disclosure;

[0026] Figure 4 is a structural schematic diagram of another heat exchanger provided by an embodiment of the present disclosure;

[0027] Figure 5 is a structural schematic diagram of another heat exchanger provided by an embodiment of the present disclosure;

[0028] Figure 6 is a structural schematic diagram of another heat exchanger provided by an embodiment of the present disclosure;

[0029] Figure 7 is a structural schematic diagram of another heat exchanger provided by an embodiment of the present disclosure;

[0030] Figure 8 is a structural schematic diagram of another heat exchanger provided by an embodiment of the present disclosure;

[0031] Figure 9 is a structural schematic diagram of another heat exchanger provided by an embodiment of the present disclosure;

[0032] Figure 10 is a structural schematic diagram of another heat exchanger provided by an embodiment of the present disclosure;

[0033] Figure 11 is a structural schematic diagram of another heat exchanger provided by an embodiment of the present disclosure;

[0034] Figure 12 is a structural schematic diagram of another heat exchanger provided by an embodiment of the present disclosure;

[0035] Figure 13 is another structural schematic diagram of a heat exchanger provided by an embodiment of the present disclosure;

[0036] Figure 14 is another structural schematic diagram of a heat exchanger provided by an embodiment of the present disclosure;

[0037] Figure 15 is another structural schematic diagram of a heat exchanger provided by an embodiment of the present disclosure;

[0038] Figure 16 is a structural schematic diagram of an air conditioner indoor unit provided by an embodiment of the present disclosure;

[0039] Figure 17 is a velocity cloud diagram of a heat exchanger.

[0040] Reference signs:

[0041] 1: upper fin segment; 11: upper leeward edge; 12: upper windward edge; 101: first upper heat exchange hole; 102: second upper heat exchange hole; 103: third upper heat exchange hole; 104: windward side edge; 105: leeward side edge;

[0042] 2: middle fin segment; 21: middle leeward edge; 22: middle windward edge; 201: first middle heat exchange hole; 202: second middle heat exchange hole; 203: third middle heat exchange hole;

[0043] 3: lower fin segment; 31: lower leeward edge; 32: lower windward edge;

[0044] 4: indoor unit shell;

[0045] 5: indoor fan. DETAILED DESCRIPTION

[0046] In order to enable a person skilled in the art to better understand the features and technical contents of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the drawings, which are only used for reference and do not limit the embodiments of the present disclosure. In the following technical description, in order to facilitate explanation, a plurality of details are provided to provide a full understanding of the disclosed embodiments. However, one or more embodiments can still be implemented without these details. In other cases, in order to simplify the drawings, well-known structures and devices can be simplified.

[0047] The terms "first", "second", and the like in the description and claims of the present disclosure and the above drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present disclosure described herein can be implemented. In addition, the terms "comprise" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0048] In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "back" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the embodiments of the present disclosure and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to indicating the orientation or positional relationship, the above-mentioned part of the terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0049] In addition, the terms "set", "connected", "fixed" should be broadly understood. For example, "connected" can be fixed connection, detachable connection, or integral structure; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium, or internal communication between two devices, elements or components. For those skilled in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0050] Unless otherwise specified, the term "a plurality of" means two or more.

[0051] In the embodiments of the present disclosure, the character " / " represents an "or" relationship between the preceding and following objects. For example, A / B means: A or B.

[0052] The term "and / or" is a description of the association between objects, which means that there can be three relationships. For example, A and / or B means: A or B, or, A and B, the three relationships.

[0053] It should be noted that the embodiments in the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0054] The embodiments of the present disclosure provide a heat exchanger with arc-shaped fins. Optionally, the heat exchanger with arc-shaped fins can also be referred to as a heat exchanger.

[0055] Optionally, the heat exchanger with arc-shaped fins comprises fins and heat exchange tubes penetrating the fins, wherein the fins comprise an upper fin segment 1, a middle fin segment 2 and a lower fin segment 3. The upper fin segment 1 comprises a first end point G1 on the leeward side; the middle fin segment 2 is arranged at the lower part of the upper fin segment 1, and a first connecting position is arranged between the upper fin segment 1 and the middle fin segment 2; the lower fin segment 3 is arranged at the lower part of the middle fin segment 2, and a second connecting position is arranged between the middle fin segment 2 and the lower fin segment 3. The perpendicular line of the first end point G1 falls on the middle fin segment 2 of the fin.

[0056] The fin of the heat exchanger comprises at least the upper fin segment 1, the middle fin segment 2 and the lower fin segment 3, which are sequentially connected from top to bottom. Optionally, the upper fin segment 1, the middle fin segment 2 and the lower fin segment 3 can be integrally formed.

[0057] The heat exchange tubes of the heat exchanger penetrate the fins, and a plurality of heat exchange tubes can be connected to form one heat exchange branch, or two or more heat exchange branches.

[0058] The upper fin segment 1 comprises a first end point G1 on the leeward side, which can be understood as the uppermost end point of the upper leeward edge 11 of the upper fin segment 1, as shown in Figure 1 .

[0059] The perpendicular line of the first end point G1 falls on the middle fin segment 2 of the fin, which can be understood as that the perpendicular line obtained by taking the first end point G1 as the perpendicular line falls on the middle fin segment 2 of the fin, as shown in Figure 1 .

[0060] Optionally, the middle fin segment 2 comprises a middle leeward edge 21 on the leeward side and a middle windward edge 22 on the windward side, the first middle point of the middle leeward edge 21 is D1, the first horizontal line p passing through the first middle point D1 intersects the middle windward edge 22 at the second point D2, and the perpendicular line of the first end point G1 intersects the first horizontal line p at the third point D3, wherein the distance between D1 and D3 is L1, and 10mm≤L1≤55mm.

[0061] As shown in Figure 1 , the middle fin segment 2 of the fin comprises a middle leeward edge 21 on the leeward side and a middle windward edge 22 on the windward side. The middle point of the middle leeward edge 21 is the first middle point D1, and the first horizontal line p passing through the first middle point D1 intersects the middle windward edge 22 at D2. Optionally, D2 is the middle point of the middle windward edge 22.

[0062] The distance between D1 and D3 is L1, which is optionally 10mm≤L1≤55mm. Optionally, L1 can be 10mm, 20mm, 30mm, 40mm, 50mm or 55mm. In the embodiment of the present disclosure, the perpendicular line of the first end point G1 intersects the first horizontal line p at the third point D3, and D3 is a certain distance from D1, which improves the matching degree of the shape of the fin and the non-uniform wind speed in the air duct, and improves the heat exchange efficiency of the heat exchanger.

[0063] Optionally, the distance between D2 and D3 is L2, and 2mm≤L2≤40mm.

[0064] The distance between D2 and D3 is L2, which is optionally 2mm≤L2≤40mm. Optionally, L2 can be 2mm, 5mm, 10mm, 20mm, 30mm or 40mm. In the embodiment of the present disclosure, D3 is a certain distance from D2, which improves the matching degree of the shape of the fin and the non-uniform wind speed in the air duct, and improves the heat exchange efficiency of the heat exchanger.

[0065] Optionally, L1≤L2.

[0066] For example, L1 is 30mm and L2 is 35mm, or L1 is 30mm and L2 is 40mm.

[0067] Optionally, the length of the middle leeward edge 21 of the middle fin segment 2 is L, wherein 0.1≤L1 / L≤1.5.

[0068] Optionally, the ratio of L1 to L can be 0.1, 0.2, 0.3, 0.5, 0.8, 1.0, 1.5.

[0069] Optionally, L1<L. Optionally, L can be 20-100mm. Optionally, 0.3≤L1 / L≤0.6.

[0070] Optionally, 0.1≤L2 / L≤1.5.

[0071] Optionally, the ratio of L2 to L can be 0.1, 0.2, 0.3, 0.5, 0.8, 1.0, 1.5.

[0072] Optionally, L2<L. Optionally, 0.4≤L1 / L≤0.9. As Figure 2 shown.

[0073] The heat exchanger with arc-shaped fins provided by the embodiment of the present disclosure improves the matching degree of the shape of the fin and the non-uniform wind speed in the air duct, and improves the heat exchange efficiency of the heat exchanger.

[0074] Optionally, the upper fin segment 1, the middle fin segment 2 and the lower fin segment 3 form a fin in an arc shape.

[0075] In the embodiments of the present disclosure, the upper fin segment 1, the middle fin segment 2 and the lower fin segment 3 form a fin in an arc shape. Figures 1 to 15 Optionally, the upper fin segment 1 extends upward toward the windward side of the middle fin segment 2, and the lower fin segment 3 extends downward toward the windward side of the middle fin segment 2, so that the upper fin segment 1, the middle fin segment 2 and the lower fin segment 3 form an arc shape. Optionally, the middle fin segment 2 is arranged in a vertical direction.

[0076] Optionally, the width of the middle fin segment 2 is greater than or equal to the width of the upper fin segment 1. Optionally, the width of the middle fin segment 2 is 1 to 1.5 times the width of the upper fin segment 1. Similarly, the width of the middle fin segment 2 is greater than or equal to the width of the lower fin segment 3. Optionally, the width of the middle fin segment 2 is 1 to 1.5 times the width of the lower fin segment 3.

[0077] Optionally, the width of the upper fin segment 1 is the same as the width of the lower fin segment 3, as shown in Figure 4 and Figure 5 Alternatively, the width of the upper fin segment 1 is greater than the width of the lower fin segment 3, as shown in Figures 1 to 3

[0078] Optionally, the length of the middle fin segment 2 is greater than or equal to the width of the middle fin segment 2. The length of the middle fin segment 2 can also be less than the width of the middle fin segment 2.

[0079] It can be understood that the width of the upper fin segment 1, the middle fin segment 2 and the lower fin segment 3 can be measured in a horizontal direction as shown in Figure 1 The length of the upper fin segment 1, the middle fin segment 2 and the lower fin segment 3 can be understood as the length of the windward edge or the leeward edge of the corresponding fin segment.

[0080] Optionally, the extension length of the upper fin segment 1 is less than or equal to the extension length of the lower fin segment 3.

[0081] The extension length of the upper fin segment 1 can be less than the extension length of the lower fin segment 3, as shown in Figure 1 so that the upper fin segment 1, the middle fin segment 2 and the lower fin segment 3 form an irregular or asymmetric arc structure. Optionally, the extension length of the upper fin segment 1 can also be equal to the extension length of the lower fin segment 3, as shown in Figure 4 so that the upper fin segment 1, the middle fin segment 2 and the lower fin segment 3 form a regular or symmetric arc structure.

[0082] ​The upper fin segment 1 comprises an upper leeward edge 11, and the lower fin segment 3 comprises a lower leeward edge 31, wherein an included angle between the upper leeward edge 11 and the middle leeward edge 21 of the middle fin segment 2 is greater than or equal to an included angle between the lower leeward edge 31 and the middle leeward edge 21 of the middle fin segment 2.

[0083] The included angle Q1 between the upper leeward edge 11 and the middle leeward edge 21 can be greater than the included angle Q2 between the lower leeward edge 31 and the middle leeward edge 21, as shown in Figure 3 Alternatively, the included angle between the upper leeward edge 11 and the middle leeward edge 21 can also be equal to the included angle between the lower leeward edge 31 and the middle leeward edge 21, as shown in Figure 4 .

[0084] Optionally, the upper leeward edge 11 of the upper fin segment 1 is parallel to the upper windward edge 12; or the middle leeward edge 21 of the middle fin segment 2 is parallel to the middle windward edge 22; or the lower leeward edge 31 of the lower fin segment 3 is parallel to the lower windward edge 32.

[0085] Optionally, the upper fin segment 1 comprises a straight upper leeward edge 11 and a straight upper windward edge 12, the middle fin segment 2 comprises a straight middle leeward edge 21 and a straight middle windward edge 22, and the lower fin segment 3 comprises a straight lower leeward edge 31 and a straight lower windward edge 32. In this way, the upper fin segment 1, the middle fin segment 2 and the lower fin segment 3 form a fin comprising at least six straight edges.

[0086] Optionally, the first connecting position between the upper fin segment 1 and the middle fin segment 2 can be an arc-shaped connection or a straight-line connection structure. Similarly, the second connecting position between the middle fin segment 2 and the lower fin segment 3 can be an arc-shaped connection or a straight-line connection structure.

[0087] Optionally, the upper fin segment 1, the first connecting position, the middle fin segment 2, the second connecting position and the lower fin segment 3 are integrally formed.

[0088] Optionally, the windward-side edge 104 of the fin coincides with the leeward-side edge 105. In this way, a plurality of fins can be continuously obtained on a substrate, reducing the waste rate during fin processing, as shown in Figure 14 and Figure 15 .

[0089] Optionally, the perpendicular line of the first end point G1 falls within the area on the windward-side side of the middle fin segment 2 of the fin.

[0090] In the embodiment of the present disclosure, the perpendicular line of the first end point G1 falls within the area on the windward-side side of the middle fin segment 2 of the fin, as shown in Figure 4Optionally, the fin formed by the upper fin segment 1, the middle fin segment 2 and the lower fin segment 3 can be substantially regular arc-shaped.

[0091] Optionally, the distance between D1 and D3 is L1, and 30mm≤L1≤100mm.

[0092] In the embodiments of the present disclosure, the distance between D1 and D3 is certain. Optionally, the value of L1 can be 30mm, 40mm, 50mm, 60mm, 70mm, 80mm, 90mm or 100mm. The distance L1 between D1 and D3 is greater than the width of the middle fin segment 2. Optionally, the distance L1 between D1 and D3 is 1.1 to 1.5 times the width of the middle fin segment 2. As Figure 4 shown.

[0093] Optionally, the distance between D2 and D3 is L2, and 2mm≤L2≤50mm.

[0094] In the embodiments of the present disclosure, the distance between D2 and D3 is also certain. Optionally, the value of L2 can be 2mm, 10mm, 20mm, 30mm, 40mm or 50mm. The distance L2 between D2 and D3 is less than or equal to the width of the middle fin segment 2. Optionally, the distance L2 between D2 and D3 is 0.3 to 0.7 times the width of the middle fin segment 2. As Figure 4 shown.

[0095] Optionally, the length of the middle leeward edge 21 of the middle fin segment 2 is L, and 0.5≤L1 / L≤3.

[0096] Optionally, the ratio of L1 to L is greater than 1, so that the bending or folding degree of the fin is improved, the matching degree of the shape of the fin and the non-uniformity of the wind speed in the air duct is improved, and the heat exchange efficiency of the heat exchanger is improved. Optionally, 1≤L1 / L≤2. As Figure 5 shown.

[0097] Optionally, 0.1≤L2 / L≤2.

[0098] Optionally, the ratio of L2 to L is greater than 0.5, so that the bending or folding degree of the fin is improved, the matching degree of the shape of the fin and the non-uniformity of the wind speed in the air duct is improved, and the heat exchange efficiency of the heat exchanger is improved. Optionally, 0.5≤L2 / L≤1. As Figure 5 shown.

[0099] The present disclosure also provides a heat exchanger. As Figures 6 to 9 shown.

[0100] Optionally, the heat exchanger comprises fins and heat exchange tubes penetrating the fins, wherein the fins comprise an upper fin segment 1, a middle fin segment 2 and a lower fin segment 3. The upper fin segment 1 comprises an upper leeward edge 11 and an upper windward edge 12; the middle fin segment 2 is arranged at a lower portion of the upper fin segment 1, and a first connecting position is arranged between the upper fin segment 1 and the middle fin segment 2, the middle fin segment 2 comprises a middle leeward edge 21 and a middle windward edge 22; the lower fin segment 3 is arranged at a lower portion of the middle fin segment 2, and a second connecting position is arranged between the middle fin segment 2 and the lower fin segment 3, the lower fin segment 3 comprises a lower leeward edge 31 and a lower windward edge 32. Wherein, an extension line of the upper leeward edge 11 intersects with an extension line of the lower leeward edge 31 at M1, a midpoint of the middle leeward edge 21 is N1, and N1 is located at an upper portion of M1. As shown in Figure 6

[0101] In the embodiments of the present disclosure, the midpoint N1 of the middle leeward edge 21 is located at the upper portion of the intersection of the extension line of the upper leeward edge 11 and the extension line of the lower leeward edge 31 at M1. Optionally, N1 and the aforementioned D1 can be the same position point.

[0102] Optionally, a vertical distance between N1 and M1 is 0.2 to 0.5 times the length L of the middle leeward edge 21 of the middle fin segment 2.

[0103] Optionally, an extension line of the upper windward edge 12 intersects with an extension line of the lower windward edge 32 at M2, and a midpoint of the middle windward edge 22 is N2, wherein N2 is located at an upper portion of M2.

[0104] In the embodiments of the present disclosure, the midpoint N2 of the middle windward edge 22 is located at the upper portion of the intersection of the extension line of the upper windward edge 12 and the extension line of the lower windward edge 32 at M2. Optionally, N2 and the aforementioned D2 can be the same position point.

[0105] Optionally, a vertical distance between N2 and M2 is 0.2 to 0.5 times the length of the middle windward edge 22 of the middle fin segment 2. Optionally, the vertical distance between N1 and M1 is equal to the vertical distance between N2 and M2. As shown in Figure 6

[0106] The heat exchanger provided by the embodiments of the present disclosure improves the matching degree of the shape of the fins and the non-uniformity of the air speed in the air duct, and improves the heat exchange efficiency of the heat exchanger.

[0107] Optionally, the straight line where N1 and M1 are located is a first straight line, and the straight line where M1 and M2 are located is a second straight line, wherein the included angle between the first straight line and the second straight line is θ1, and 0° < θ1 ≤ 60°.

[0108] ​​In the embodiments of the present disclosure, the first straight line where N1 and M1 are located and the second straight line where M1 and M2 are located form a certain angle. Optionally, the angle of θ1 can be 5°, 15°, 25°, 35°, 45°, 55° or 60°.

[0109] Optionally, 20° < θ1 ≤ 45°. As shown in Figure 7

[0110] Optionally, the straight line where N2 and M2 are located is a third straight line, where the angle between the third straight line and the second straight line is θ2, and 0° < θ2 ≤ 60°.

[0111] In the embodiments of the present disclosure, the third straight line where N2 and M2 are located and the second straight line where M1 and M2 are located also form a certain angle. Optionally, the angle of θ2 can be 5°, 15°, 25°, 35°, 45°, 55° or 60°.

[0112] Optionally, 20° < θ2 ≤ 45°. As shown in Figure 8

[0113] Optionally, the angles of θ1 and θ2 are equal.

[0114] Optionally, the straight line where N1 and N2 are located is a fourth straight line, where the angle between the fourth straight line and the second straight line is θ3, and 0° ≤ θ3 ≤ 20°.

[0115] In the embodiments of the present disclosure, the angle θ3 between the fourth straight line where N1 and N2 are located and the second straight line where M1 and M2 are located can be 0°, that is, the fourth straight line is parallel to the second straight line. As shown in Figure 9

[0116] Optionally, the angle θ3 between the fourth straight line where N1 and N2 are located and the second straight line where M1 and M2 are located can also be greater than 0° and less than or equal to 20°.

[0117] The heat exchanger provided by the embodiments of the present disclosure improves the matching degree of the shape of the fins and the non-uniformity of the air speed in the air duct, and improves the heat exchange efficiency of the heat exchanger.

[0118] The embodiments of the present disclosure also provide a heat exchanger. As shown in Figures 10 to 13

[0119] ​​​​Optionally, the heat exchanger comprises fins and heat exchange tubes arranged in the fins, wherein the fins comprise an upper fin section 1, a middle fin section 2 and a lower fin section 3. The upper fin section 1 comprises an upper fin area formed by an upper leeward edge 11 and an upper windward edge 12, the upper fin area comprises a first upper heat exchange hole 101 close to the middle fin area and close to the upper leeward edge 11, and a second upper heat exchange hole 102 close to the middle fin area and close to the upper windward edge 12; the middle fin section 2 is arranged below the upper fin section 1, the middle fin section 2 comprises a middle fin area formed by a middle leeward edge 21 and a middle windward edge 22, the middle fin area comprises a first middle heat exchange hole 201 close to the upper fin area and close to the middle leeward edge 21, and a second middle heat exchange hole 202 close to the upper fin area and close to the middle windward edge 22; the lower fin section 3 is arranged below the middle fin section 2, the lower fin section 3 comprises a lower fin area formed by a lower leeward edge 31 and a lower windward edge 32. Wherein, a straight line where the first upper heat exchange hole 101 and the first middle heat exchange hole 201 are located is a first heat exchange hole straight line, a straight line where the second upper heat exchange hole 102 and the second middle heat exchange hole 202 are located is a second heat exchange hole straight line, an included angle between the first heat exchange hole straight line and the second heat exchange hole straight line is β1, and 10°≤β1≤60°.

[0120] In the embodiments of the present disclosure, a straight line where the first upper heat exchange hole 101 and the first middle heat exchange hole 201 are located is a first heat exchange hole straight line, and a straight line where the second upper heat exchange hole 102 and the second middle heat exchange hole 202 are located is a second heat exchange hole straight line. An included angle β1 between the first heat exchange hole straight line and the second heat exchange hole straight line is greater than or equal to 10°, and less than or equal to 60°.

[0121] Optionally, a straight line where the center of the first upper heat exchange hole 101 and the center of the first middle heat exchange hole 201 are located can be taken as the first heat exchange hole straight line; similarly, a straight line where the center of the second upper heat exchange hole 102 and the center of the second middle heat exchange hole 202 are located can be taken as the second heat exchange hole straight line. As shown in FIG. 1. Figure 10

[0122] Optionally, β1 can be 10°, 20°, 30°, 40°, 50° or 60°.

[0123] It can be understood that the boundary line between the upper fin area formed by the upper fin section 1 and the middle fin area formed by the middle fin section 2 can be as shown by the upper dashed line in FIG. 1. The boundary line between the middle fin area formed by the middle fin section 2 and the lower fin area formed by the lower fin section 3 can be as shown by the lower dashed line in FIG. 1. Figure 10 Figure 10

[0124] ​​​It can be understood that when the heat exchange hole is located in the upper fin area and the middle fin area at the same time, the heat exchange hole can be classified as the upper fin area; similarly, when the heat exchange hole is located in the middle fin area and the lower fin area at the same time, the heat exchange hole can be classified as the middle fin area.

[0125] It can be understood that the heat exchange hole is a through hole on the fin for inserting the heat exchange pipe. Optionally, the aperture of the heat exchange hole can be adjusted according to the aperture of the heat exchange pipe. Optionally, when the apertures of the plurality of heat exchange pipes of the heat exchanger are the same, the apertures of the plurality of heat exchange holes on the fin are also the same.

[0126] The heat exchanger provided by the embodiment of the present disclosure improves the matching degree of the shape of the fin and the non-uniformity of the air speed in the air duct, and improves the heat exchange efficiency of the heat exchanger.

[0127] Optionally, the straight line where the first middle heat exchange hole 201 and the second middle heat exchange hole 202 are located is a third heat exchange hole straight line, wherein the middle fin area further includes a third middle heat exchange hole 203 located between the first middle heat exchange hole 201 and the second middle heat exchange hole 202, and the third middle heat exchange hole 203 is located in the lower part of the third heat exchange hole straight line.

[0128] Similarly, the straight line where the center of the first middle heat exchange hole 201 and the center of the second middle heat exchange hole 202 are located can be taken as the third heat exchange hole straight line.

[0129] As shown in Figure 11 , the third middle heat exchange hole 203 is located in the lower part of the third heat exchange hole straight line, or the third middle heat exchange hole 203 is located in the upper part of the third heat exchange hole straight line. It can be understood that the first middle heat exchange hole 201, the second middle heat exchange hole 202 and the third middle heat exchange hole 203 are not on the same straight line.

[0130] Optionally, the upper fin area further includes a third upper heat exchange hole 103 close to the first upper heat exchange hole 101, wherein the third upper heat exchange hole 103 is located on the first heat exchange hole straight line.

[0131] The third upper heat exchange hole 103 located on the first heat exchange hole straight line can be understood as at least part of the third upper heat exchange hole 103 located on the first heat exchange hole straight line.

[0132] Optionally, 10°≤β1≤30°.

[0133] Optionally, when β1 is greater than or equal to 10° and less than or equal to 30°, the fin of the heat exchanger can be irregularly arc-shaped. As shown in Figure 10 .

[0134] Optionally, the straight line where the first middle heat exchange hole 201 and the second middle heat exchange hole 202 are located is a third heat exchange hole straight line, wherein the middle fin area further comprises a third middle heat exchange hole 203 located between the first middle heat exchange hole 201 and the second middle heat exchange hole 202, and the third middle heat exchange hole 203 is located on the third heat exchange hole straight line.

[0135] The third middle heat exchange hole 203 located on the third heat exchange hole straight line can be understood as at least part of the third middle heat exchange hole 203 being located on the third heat exchange hole straight line. Alternatively, it can also be understood that at least part of the first middle heat exchange hole 201, at least part of the second middle heat exchange hole 202, and at least part of the third middle heat exchange hole 203 are collinear. As Figure 13 indicated.

[0136] Optionally, the upper fin area further comprises a third upper heat exchange hole 103 close to the first upper heat exchange hole 101, wherein the third upper heat exchange hole 103 is located on the second heat exchange hole straight line.

[0137] The third upper heat exchange hole 103 located on the second heat exchange hole straight line can be understood as at least part of the third upper heat exchange hole 103 being located on the second heat exchange hole straight line.

[0138] Optionally, 25°≤β1≤50°.

[0139] Optionally, when β1 is greater than or equal to 25° and less than or equal to 50°, the fins of the heat exchanger can be regular arc-shaped. As Figure 12 indicated.

[0140] It can be understood that the embodiments of the heat exchanger in the present application and the features in the embodiments can be combined with each other without conflict.

[0141] Figure 17 The speed nephogram of the heat exchanger in the present application is compared with that of the existing I-type inclined heat exchanger. Among them, Figure 17 the upper graph a of is the speed nephogram of the existing I-type inclined heat exchanger, Figure 17 the lower graph b of is the speed nephogram of the heat exchanger of each embodiment of the present application.

[0142] From Figure 17 it can be seen that the I-type inclined heat exchanger has the characteristics of high upper air speed and low lower air speed, the air speed distribution is uneven, and the heat exchange efficiency of the heat exchanger is low. Among them, the area with high upper air speed is as indicated by the upper circle of a in Figure 17 , and the area with low lower air speed is as indicated by the lower circle of a in Figure 17 .

[0143] The heat exchanger provided by the application is characterized in that the airflow in the high wind speed area in the middle part is effectively guided to the upper and lower parts, and the overall wind speed distribution is uniform. The uniform wind field distribution improves the uniformity of the heat exchange field, and the overall heat exchange performance of the heat exchanger is improved. Figure 17 as shown by b in the formula.

[0144] In addition, the length of the slope section of the fin of the heat exchanger provided by the application is relatively short, and the risk of poor drainage of the fin surface is reduced.

[0145] The disclosure further provides an air conditioner indoor unit, which can also be referred to as a ducted air conditioner device or a ducted air conditioner.

[0146] Optionally, the air conditioner indoor unit comprises an indoor unit shell 4, an indoor fan 5 and a heat exchanger. The indoor unit shell 4 is internally provided with a containing space; the indoor fan 5 is arranged in the containing space; and the heat exchanger is arranged in the containing space and on the air outlet side of the indoor fan 5. The heat exchanger is the heat exchanger as described above.

[0147] The air conditioner indoor unit comprising the heat exchanger as described above improves the heat exchange efficiency between the indoor fan 5 and the heat exchanger.

[0148] The above description and drawings sufficiently show the embodiments of the disclosure to enable a person skilled in the art to practice them. Other embodiments can include structural and other changes. The embodiments only represent possible changes. Unless explicitly required, individual components and functions are optional, and the order of operations can be changed. Some parts and features of some embodiments can be included in or replace parts and features of other embodiments. The embodiments of the disclosure are not limited to the structures described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the disclosure is only limited by the appended claims.

Claims

1. A heat exchanger, characterized in that, Includes fins and heat exchange tubes passing through the fins, wherein the fins include: The upper fin segment includes an upper fin region formed by an upper leeward edge and an upper windward edge. The upper fin region includes a first upper heat exchange hole near the middle fin region and near the upper leeward edge, and a second upper heat exchange hole near the middle fin region and near the upper windward edge. A middle fin segment, located below the upper fin segment, includes a middle fin region formed by a middle leeward edge and a middle windward edge. The middle fin region includes a first middle heat exchange hole near the upper fin region and the middle leeward edge, and a second middle heat exchange hole near the upper fin region and the middle windward edge; and... The lower wing segment is located below the middle wing segment. The lower wing segment includes a lower wing area formed by the lower leeward edge and the lower windward edge. Wherein, the straight line containing the first upper heat exchange hole and the first middle heat exchange hole is the first heat exchange hole straight line, the straight line containing the second upper heat exchange hole and the second middle heat exchange hole is the second heat exchange hole straight line, the angle between the first heat exchange hole straight line and the second heat exchange hole straight line is β1, and 10°≤β1≤60°.

2. The heat exchanger according to claim 1, characterized in that, The straight line connecting the first and second central heat exchange holes is the straight line for the third heat exchange hole. The central fin region also includes a third central heat exchange hole located between the first central heat exchange hole and the second central heat exchange hole, and the third central heat exchange hole is located at the lower part of the straight line of the third heat exchange hole.

3. The heat exchanger according to claim 2, characterized in that, The upper fin area also includes a third upper heat exchange hole near the first upper heat exchange hole. The third upper heat exchange hole is located on the same line as the first heat exchange hole.

4. The heat exchanger according to claim 2, characterized in that, 10°≤β1≤30°。 5. The heat exchanger according to claim 1, characterized in that, The straight line connecting the first and second central heat exchange holes is the straight line for the third heat exchange hole. The central fin region also includes a third central heat exchange hole located between the first central heat exchange hole and the second central heat exchange hole, and the third central heat exchange hole is located on the straight line of the third heat exchange hole.

6. The heat exchanger according to claim 5, characterized in that, The upper fin area also includes a third upper heat exchange hole near the first upper heat exchange hole. The third upper heat exchange hole is located on the same line as the second heat exchange hole.

7. The heat exchanger according to claim 5, characterized in that, 25°≤β1≤50°。 8. The heat exchanger according to claim 1, characterized in that, The upper wing segment, middle wing segment, and lower wing segment form an arched wing; or, The extension length of the upper wing segment is greater than or equal to the extension length of the lower wing segment; or, The upper wing segment includes an upper leeward edge, and the lower wing segment includes a lower leeward edge, wherein the angle between the upper leeward edge and the middle leeward edge of the middle wing segment is greater than or equal to the angle between the lower leeward edge and the middle leeward edge of the middle wing segment; or, The upper wing segment includes a straight upper leeward edge and an upper windward edge; the middle wing segment includes a straight middle leeward edge and a middle windward edge; and the lower wing segment includes a straight lower leeward edge and a lower windward edge; or, The edge of the fin on the windward side coincides with the edge on the leeward side.

9. The heat exchanger according to claim 8, characterized in that, A first connection point is provided between the upper wing segment and the middle wing segment, and a second connection point is provided between the middle wing segment and the lower wing segment. The first connection point is either an arc-shaped connection or a straight-line connection; or... The second connection point is either an arc-shaped connection or a straight-line connection.

10. A duct-type air conditioning unit, characterized in that, include: The indoor unit casing has an internal accommodating space. Indoor fans are installed within the enclosure space; and, The heat exchanger is installed within the enclosure and on the exhaust side of the indoor fan. The heat exchanger is the heat exchanger as described in any one of claims 1 to 9.

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