Heat exchanger and air conditioner indoor unit

Abstract

The utility model provides a kind of heat exchanger and air conditioner indoor unit.The heat exchanger includes heat exchange part, first tube plate, second tube plate and third tube plate.The first tube plate is vertically arranged and is arranged at one end of the heat exchange part.The second tube plate is vertically arranged and is arranged at the other end of the heat exchange part.The third tube plate is vertically arranged and is arranged on the heat exchange part between the first tube plate and the second tube plate, and at least part of the tube section of the heat exchange tube passes through the third tube plate, so that the third tube plate also plays a role in fixing the heat exchange part, effectively reducing the risk of deformation of the middle part of the heat exchange tube, making the fixing of the heat exchanger more secure.Furthermore, the structural rigidity and vibration resistance of the entire heat exchanger are improved, avoiding the collision of the heat exchanger during transportation due to insecure fixing, causing the heat exchanger fin to be inverted, and even leading to copper tube damage and refrigerant leakage.

Description

Technical Field

[0001] This utility model relates to the field of air conditioner technology, and in particular to a heat exchanger and an indoor unit of an air conditioner. Background Technology

[0002] An air conditioner's indoor unit contains a heat exchanger with end plates on both sides. The heat exchanger is flush with the end plates for securing it. However, evaporators are typically quite long, and securing the heat exchanger with only two end plates makes its fixation unreliable. Especially during transport, if the indoor unit is dropped, the heat exchanger can shake significantly inside, increasing the risk of impact. This can cause minor damage like bent heat exchanger fins or, in more serious cases, broken copper pipes and refrigerant leaks. Utility Model Content

[0003] In view of the above problems, this utility model is proposed to provide a heat exchanger and an indoor unit of an air conditioner that overcomes or at least partially solves the above problems, and can solve the problem of the heat exchanger not being firmly fixed, so as to achieve the effect of making the heat exchanger more firmly fixed.

[0004] Specifically, this utility model provides a heat exchanger for an air conditioner, comprising: A heat exchange section, wherein the heat exchange section has heat exchange tubes.

[0005] The first tube sheet is arranged vertically and is located at one end of the heat exchange section.

[0006] The second tube sheet is arranged vertically and is located at the other end of the heat exchange section.

[0007] The third tube sheet is vertically arranged and is disposed on the heat exchange section, and is located between the first tube sheet and the second tube sheet.

[0008] Optionally, the heat exchange tubes are arranged in at least two layers in the horizontal direction.

[0009] The third tube sheet is disposed on a portion of the heat exchange tubes.

[0010] Optionally, the at least two layers of heat exchange tubes include a first layer of heat exchange tubes and a second layer of heat exchange tubes.

[0011] The heat exchange section is curved, so that one side of the heat exchange section is a concave surface and the other side is a convex surface, and the first layer of heat exchange tubes is located inside the second layer of heat exchange tubes.

[0012] The third tube sheet is at least disposed on the first layer of heat exchange tubes.

[0013] Optionally, the heat exchange section includes: The first plate-shaped portion is vertically arranged, and the first tube sheet is disposed at one end of the first plate-shaped portion.

[0014] The second plate-shaped portion is vertically arranged, and the second tube sheet is disposed at the other end of the second plate-shaped portion.

[0015] A curved portion, which connects the first plate-shaped portion and the second plate-shaped portion.

[0016] The third tube sheet is disposed on the curved portion.

[0017] The ratio between the distance between the third tube sheet and the first tube sheet and the distance between the third tube sheet and the second tube sheet is 0.6 to 0.8.

[0018] Optionally, the ratio between the distance the first plate-shaped portion extends in the horizontal direction and the distance the second plate-shaped portion extends in the horizontal direction is 0.45 to 0.7.

[0019] Optionally, the curved portion includes a first arc-shaped portion and a second arc-shaped portion connected to each other, the first arc-shaped portion and the second arc-shaped portion being coaxial and having the same radius.

[0020] The first arc-shaped portion is connected to the first plate-shaped portion.

[0021] The second arc-shaped portion is connected to the second plate-shaped portion.

[0022] The third tube sheet is disposed at the connection between the first arc-shaped portion and the second arc-shaped portion.

[0023] The ratio between the degree measure of the central angle of the first arc portion and the degree measure of the central angle of the second arc portion is 1 to 1.1.

[0024] Optionally, the upper end of the third tube sheet is horizontally provided with a first connecting plate, and the lower end is horizontally provided with a second connecting plate.

[0025] The first connecting plate and the second connecting plate are located on the same side of the third tube sheet.

[0026] The upper end of the second tube sheet is provided with a hanging hole and a third connecting plate. The third connecting plate is horizontally arranged and located above the hanging hole.

[0027] This utility model also provides an indoor unit for an air conditioner, comprising: A bracket having an upper end, a lower end, and a connecting portion connecting the upper end and the lower end.

[0028] The heat exchanger described above is mounted on the support, with the upper end of the third tube sheet connected to the upper end. The lower end supports the lower end of the third tube sheet.

[0029] Optionally, the lower end defines a water receiving groove, and a support platform is provided inside the water receiving groove.

[0030] The second connecting plate connected to the lower end of the third tube sheet is disposed on the support platform and is fixedly connected to the support platform.

[0031] Optionally, the upper end has a first abutting portion, and the lower end has a second abutting portion.

[0032] The upper side of the first tube sheet near the third tube sheet contacts the first abutment, and the lower side of the first tube sheet near the third tube sheet contacts the second abutment.

[0033] The upper end has a third abutment portion, and the lower end has a fourth abutment portion.

[0034] The upper side of the second tube sheet near the third tube sheet contacts the third abutment, and the lower side of the second tube sheet near the third tube sheet contacts the fourth abutment.

[0035] The third abutment portion is a partial surface area of ​​the bracket. A protrusion is provided on the third abutment portion, and the protrusion inserts into a hanging hole on the second tube sheet. A third connecting plate on the second tube sheet is fixedly connected to the upper end portion.

[0036] The lower end supports the lower ends of the first tube sheet and the second tube sheet.

[0037] The first tube sheet and the second tube sheet are fixedly connected to the connecting part.

[0038] In this heat exchanger, a first tube sheet and a second tube sheet are vertically arranged at both ends of the heat exchange section to fix the ends of the heat exchange tubes and form a basic support frame. A third tube sheet, also vertically arranged, is installed on the heat exchange section between the first and second tube sheets, with at least a portion of the heat exchange tubes passing through it. This allows the third tube sheet to also fix the heat exchange section, effectively reducing the risk of deformation in the middle of the heat exchange tubes and making the heat exchanger more secure. This, in turn, improves the overall structural rigidity and vibration resistance of the heat exchanger, preventing collisions during transportation that could cause the heat exchanger fins to collapse, or even damage to the copper tubes and refrigerant leakage.

[0039] The above and other objects, advantages and features of this utility model will become more apparent to those skilled in the art from the following detailed description of specific embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0040] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings: Figure 1 This is a schematic structural diagram of a heat exchanger according to an embodiment of the present invention; Figure 2 This is a schematic partial structural diagram of a heat exchanger according to an embodiment of the present invention; Figure 3 This is a schematic cross-sectional view of a heat exchanger according to an embodiment of the present invention; Figure 4 This is a schematic cross-sectional view of a heat exchanger according to an embodiment of the present invention; Figure 5 This is a schematic structural diagram of an indoor unit of an air conditioner according to an embodiment of the present utility model; Figure 6 This is a schematic partial structural diagram of an indoor unit of an air conditioner according to an embodiment of the present utility model; Figure 7 This is a schematic partial structural diagram of an indoor unit of an air conditioner according to an embodiment of the present invention.

[0041] List of reference numerals in the attached diagram: 100. Heat exchange section; 110. Heat exchange tube; 111. First layer of heat exchange tube; 112. Second layer of heat exchange tube; 120. First plate-shaped section; 130. Second plate-shaped section; 140. Bending section; 141. First arc-shaped section; 142. Second arc-shaped section; 200. First tube sheet; 300, Second tube sheet; 310, Hanging hole; 320, Third connecting plate; 400. Third tube sheet; 410. First connecting plate; 420. Second connecting plate; 500, bracket; 510, upper end; 511, protrusion; 520, lower end; 521, water receiving tank; 522, support platform; 530, connecting part. Detailed Implementation

[0042] The following reference Figures 1 to 7This invention describes a heat exchanger and an indoor unit of an air conditioner according to an embodiment of the present invention. In this description, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature, that is, include one or more of that feature. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it encompasses, unless otherwise specifically described, this indicates that other features are not excluded and may be further included.

[0043] Unless otherwise expressly specified and limited, the terms "set," "install," "connect," "link," "fix," and "couple" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art should be able to understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0044] Furthermore, in the description of this embodiment, "above" or "below" the second feature can include direct contact between the first and second features, or it can include contact between the first and second features through another feature between them. That is, in the description of this embodiment, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "below" of the second feature can mean the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0045] In the description of this embodiment, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0046] Figure 1This is a first schematic structural diagram of an indoor unit of an air conditioner according to an embodiment of the present invention, as shown below. Figure 1 As shown, and refer to Figures 2 to 7 This utility model provides a heat exchanger for an air conditioner. The heat exchanger includes a heat exchange section 100, a first tube sheet 200, a second tube sheet 300, and a third tube sheet 400.

[0047] The heat exchange section 100 has heat exchange tubes 110.

[0048] The first tube sheet 200 is arranged vertically and is located at one end of the heat exchange section 100.

[0049] The second tube sheet 300 is arranged vertically and is located at the other end of the heat exchange section 100.

[0050] The third tube sheet 400 is arranged vertically on the heat exchange section 100 and is located between the first tube sheet 200 and the second tube sheet 300.

[0051] In this embodiment, a first tube sheet 200 and a second tube sheet 300 are vertically arranged at both ends of the heat exchange section 100 to fix the ends of the heat exchange tubes 110 and form a basic support frame. A third tube sheet 400, also vertically arranged, is provided on the heat exchange section 100 located between the first tube sheet 200 and the second tube sheet 300, with at least a portion of the heat exchange tubes 110 passing through the third tube sheet 400. This allows the third tube sheet 400 to also fix the heat exchange section 100, effectively reducing the risk of deformation in the middle of the heat exchange tubes 110 and making the heat exchanger more securely fixed. This further improves the structural rigidity and vibration resistance of the entire heat exchanger, preventing collisions during transportation caused by insecure fixing, which could lead to fin collapse, copper tube damage, or refrigerant leakage.

[0052] In some embodiments of this utility model, such as Figure 4 As shown, the heat exchange tubes 110 are arranged in at least two layers along the horizontal direction.

[0053] The third tube sheet 400 is installed on the partial layer heat exchange tube 110.

[0054] In this embodiment, the heat exchange tubes 110 are arranged in at least two layers along the horizontal direction to form a multi-layer heat exchange structure to increase the heat exchange area. The third tube sheet 400 is not connected to each layer of heat exchange tubes 110, so as to ensure the structural strength of easily deformable parts while taking into account material saving and structural lightweighting, thus achieving a balance between cost and performance.

[0055] In some embodiments of this utility model, such as Figure 4 As shown, at least two layers of heat exchange tubes 110 include a first layer of heat exchange tubes 111 and a second layer of heat exchange tubes 112.

[0056] The heat exchange section 100 is curved, so that one side surface of the heat exchange section 100 is a concave surface and the other side surface is a convex surface, and the first layer heat exchange tube 111 is located inside the second layer heat exchange tube 112.

[0057] The third tube sheet 400 is installed on at least the first layer of heat exchange tubes 111.

[0058] In this embodiment, each heat exchange tube 110 is bent, making the entire heat exchange section 100 curved. With the heat exchange section 100 in a curved shape, the inner first-layer heat exchange tube 111, due to its smaller radius of curvature, experiences greater compressive stress and is more prone to deformation. The third tube sheet 400 is configured to connect at least to the inner first-layer heat exchange tube 111, effectively improving the rigidity of the heat exchange section 100 and extending its service life.

[0059] In some embodiments of this utility model, such as Figure 2 and Figure 3 As shown, the heat exchange section 100 includes: a first plate-shaped section 120, a second plate-shaped section 130, and a curved section 140.

[0060] The first plate-shaped portion 120 is arranged vertically, and the first tube plate 200 is disposed at one end of the first plate-shaped portion 120.

[0061] The second plate-shaped portion 130 is arranged vertically, and the second tube plate 300 is arranged at the other end of the second plate-shaped portion 130.

[0062] The curved portion 140 connects the first plate-shaped portion 120 and the second plate-shaped portion 130.

[0063] The third tube sheet 400 is disposed on the bend 140.

[0064] The ratio between the distance L1 between the third tube sheet 400 and the first tube sheet 200 and the distance L2 between the third tube sheet 400 and the second tube sheet 300 is 0.6 to 0.8.

[0065] In this embodiment, the heat exchange section 100 is designed to match the shape of the air duct in the indoor unit of the air conditioner. Its cross-sectional shape is typically asymmetrical, and the first plate-shaped portion 120 or the second plate-shaped portion 130 connected to the end of the bend 140 near the air inlet is relatively short. The ratio between the distance L1 between the third tube plate 400 and the first tube plate 200 and the distance L2 between the third tube plate 400 and the second tube plate 300 is between 0.6 and 0.8, allowing the third tube plate 400 to be positioned near the center of the bend 140. This further enhances the structural stability of the heat exchange section 100 and reduces deformation of the heat exchange section 100 under pressure or vibration.

[0066] In some embodiments of this utility model, such as Figure 3 As shown, the ratio between the distance H1 that the first plate-shaped portion 120 extends in the horizontal direction and the distance H2 that the second plate-shaped portion 130 extends in the horizontal direction is 0.45 to 0.7.

[0067] In this embodiment, the first plate-shaped portion 120 is connected to one end of the curved portion 140 near the air inlet. When the ratio between the horizontal extension distance H1 of the first plate-shaped portion 120 and the horizontal extension distance H2 of the second plate-shaped portion 130 is less than 0.45, the first plate-shaped portion 120 is too short, which may result in insufficient structural rigidity and poor airflow guidance, affecting the heat exchange efficiency of the indoor unit of the air conditioner. When the ratio is greater than 0.7, the lengths of the two plate-shaped portions are close, losing the advantage of adapting to specific installation spaces using an asymmetrical structure. By controlling the ratio between 0.45 and 0.7, a compact layout of the overall heat exchanger shape is successfully achieved while ensuring sufficient structural stability and effective guiding length for the first plate-shaped portion 120.

[0068] In some embodiments of this utility model, such as Figure 3 As shown, the curved portion 140 includes a first arc-shaped portion 141 and a second arc-shaped portion 142 that are connected to each other. The first arc-shaped portion 141 and the second arc-shaped portion 142 are coaxial and have the same radius.

[0069] The first arc-shaped portion 141 is connected to the first plate-shaped portion 120.

[0070] The second arc-shaped portion 142 is connected to the second plate-shaped portion 130.

[0071] The third tube sheet 400 is disposed at the connection between the first arc-shaped portion 141 and the second arc-shaped portion 142.

[0072] The ratio between the degree measure A1 of the central angle of the first arc portion 141 and the degree measure A2 of the central angle of the second arc portion 142 is 1 to 1.1.

[0073] In this embodiment, the third tube sheet 400 is disposed at the connection between the first arc-shaped portion 141 and the second arc-shaped portion 142. The ratio between the degree A1 of the central angle of the first arc-shaped portion 141 and the degree A2 of the central angle of the second arc-shaped portion 142 is limited to between 1 and 1.1, meaning that the curvature of the first arc-shaped portion 141 and the second arc-shaped portion 142 is almost identical. The approximately symmetrical structural design of the first arc-shaped portion 141 and the second arc-shaped portion 142 makes the internal stress distribution generated by bending more uniform, thereby improving the structural stability of the heat exchange section 100. Furthermore, the slightly larger design of the second arc-shaped portion 142 allows the third tube sheet 400 to be slightly closer to the second tube sheet 300, making the third tube sheet 400 closer to the centerline between the first tube sheet 200 and the second tube sheet 300. At the same time, it also allows for slight deviations during assembly, simplifying the assembly process and improving assembly efficiency.

[0074] Preferably, the ratio between the distance L1 between the third tube sheet 400 and the first tube sheet 200 and the distance L2 between the third tube sheet 400 and the second tube sheet 300 is 0.71.

[0075] Preferably, the ratio between the distance H1 that the first plate-shaped portion 120 extends in the horizontal direction and the distance H2 that the second plate-shaped portion 130 extends in the horizontal direction is 0.56.

[0076] In some embodiments of this utility model, such as Figure 6 and Figure 7 As shown, a first connecting plate 410 is horizontally arranged at the upper end of the third tube sheet 400, and a second connecting plate 420 is horizontally arranged at the lower end. The first connecting plate 410 and the second connecting plate 420 are located on the same side of the third tube sheet 400.

[0077] In this embodiment, a first connecting plate 410 and a second connecting plate 420 extend horizontally from the upper and lower ends of the third tube plate 400, respectively, and these two connecting plates are located on the same side of the third tube plate 400, so that the third tube plate 400 can be conveniently fixedly connected to the bracket 500 of the indoor unit of the air conditioner through the connecting plates.

[0078] In some embodiments of this utility model, such as Figure 6 As shown, the upper end of the second tube sheet 300 is provided with a hanging hole 310 and a third connecting plate 320. The third connecting plate 320 is horizontally arranged and located above the hanging hole 310. This allows the heat exchanger to be not only installed by limiting its position through the hanging hole 310 at the upper end of the second tube sheet 300, but also to be directly fixed to the bracket 500 of the indoor unit of the air conditioner through the threaded connection of the third connecting plate 320. This makes the positioning of the heat exchanger more stable and reliable, and also effectively reduces the displacement caused by its own weight or operating vibration.

[0079] This utility model embodiment provides an indoor unit for an air conditioner. For example... Figure 5 As shown, the indoor unit of the air conditioner includes a bracket 500 and a heat exchanger as described in any of the above embodiments.

[0080] The bracket 500 has an upper end 510, a lower end 520, and a connecting portion 530 that connects the upper end 510 and the lower end 520.

[0081] The heat exchanger is mounted on the support 500, and the upper end of the third tube sheet 400 is connected to the upper end 510. The lower end 520 supports the lower end of the third tube sheet 400.

[0082] In this embodiment, a first tube sheet 200 and a second tube sheet 300 are vertically arranged at both ends of the heat exchange section 100 to fix the ends of the heat exchange tubes 110 and form a basic support frame. A third tube sheet 400, also vertically arranged, is provided on the heat exchange section 100 located between the first tube sheet 200 and the second tube sheet 300, with at least a portion of the heat exchange tubes 110 passing through the third tube sheet 400. This allows the third tube sheet 400 to also fix the heat exchange section 100, effectively reducing the risk of deformation in the middle of the heat exchange tubes 110 and making the heat exchanger more securely fixed. This further improves the structural rigidity and vibration resistance of the entire heat exchanger, preventing collisions during transportation caused by insecure fixing, which could lead to fin collapse, copper tube damage, or refrigerant leakage.

[0083] In some embodiments of this utility model, such as Figure 5 and Figure 7 As shown, the lower end 520 defines a water receiving trough 521, and a support platform 522 is provided inside the water receiving trough 521.

[0084] The second connecting plate 420, which is connected to the lower end of the third tube sheet 400, is mounted on the support platform 522 and is fixedly connected to the support platform 522.

[0085] In this embodiment, the water collection tank 521 can be used to collect condensate generated on the surface of the heat exchanger. A support platform 522 is provided inside the water collection tank 521, and the second connecting plate 420 is disposed on the support platform 522 and fixedly connected to the support platform 522 by means of screws, clips, or welding, etc., to ensure the stability of the heat exchanger components and effectively prevent excessive shaking of the heat exchanger. In this embodiment, the drainage function and structural support function are both achieved by a single component, without the need for additional special support structures, making the internal structure of the air conditioner indoor unit more compact.

[0086] In some embodiments of this utility model, the upper end portion 510 has a first abutting portion and the lower end portion 520 has a second abutting portion.

[0087] The upper side of the first tube sheet 200 near the third tube sheet 400 contacts the first abutment, and the lower side of the first tube sheet 200 near the third tube sheet 400 contacts the second abutment.

[0088] In this embodiment, the length of the first tube sheet 200 is greater than the length of the heat exchange section 100, and both ends of the first tube sheet 200 extend beyond the heat exchange section 100. The portions extending beyond the heat exchange section 100 abut against the first abutment portion and the second abutment portion, respectively. The heat exchanger is fixed by the surface of the first tube sheet 200 abutting against the surfaces of the first abutment portion and the second abutment portion, i.e., contact between planes. The fixed position has a large area, making the fixation reliable and ensuring a more secure fixation of the heat exchanger. This avoids collisions between the heat exchanger and the indoor unit of the air conditioner, reducing the risk of damage to the heat exchanger.

[0089] In some embodiments of this utility model, the upper end 510 has a third abutting portion and the lower end 520 has a fourth abutting portion.

[0090] The upper side of the second tube sheet 300 near the third tube sheet 400 contacts the third abutment, and the lower side of the second tube sheet 300 near the third tube sheet 400 contacts the fourth abutment.

[0091] In this embodiment, the length of the second tube sheet 300 is greater than the length of the heat exchange section 100, and both ends of the first tube sheet 200 extend beyond the heat exchange section 100, with the portions extending beyond the heat exchange section 100 abutting against the third and fourth abutting portions, respectively. Both sides of the heat exchanger are fixedly connected to the support 500 by plane-to-plane abutment, further making the fixation of the heat exchanger more secure.

[0092] In some embodiments of this utility model, such as Figure 6 As shown, the third abutment portion is a partial surface area of ​​the bracket 500. A protrusion 511 is provided on the third abutment portion, and the protrusion 511 is inserted into the hanging hole 310 on the second tube plate 300. The third connecting plate 320 on the second tube plate 300 is fixedly connected to the upper end 510.

[0093] In this embodiment, a protrusion 511 is provided on the third abutment portion, and a hanging hole 310 is provided on the second tube sheet 300. When the second tube sheet 300 contacts and abuts against the third abutment portion, the protrusion 511 on the third abutment portion is inserted into the hanging hole 310 on the second tube sheet 300. The protrusion 511 and the hanging hole 310 serve a positioning function, making it more convenient to install the heat exchanger, avoiding misalignment during heat exchanger installation, and facilitating the installation of the heat exchanger.

[0094] In some embodiments of this utility model, such as Figure 7 As shown, the lower end 520 supports the lower ends of the first tube sheet 200 and the second tube sheet 300.

[0095] In some embodiments of this utility model, the first tube sheet 200 and the second tube sheet 300 are fixedly connected to the connecting part 530, which further enhances the overall structural rigidity of the heat exchanger.

[0096] Therefore, those skilled in the art should recognize that although many exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all such other variations or modifications.

Claims

1. A heat exchanger for an air conditioner, characterized in that, include: The heat exchange section includes heat exchange tubes; The first tube sheet is vertically arranged and located at one end of the heat exchange section; The second tube sheet is vertically arranged and located at the other end of the heat exchange section; The third tube sheet is vertically arranged and is disposed on the heat exchange section, and is located between the first tube sheet and the second tube sheet.

2. The heat exchanger according to claim 1, characterized in that, The heat exchange tubes are arranged in at least two layers along the horizontal direction; The third tube sheet is disposed on a portion of the heat exchange tubes.

3. The heat exchanger according to claim 2, characterized in that, The at least two layers of heat exchange tubes include a first layer of heat exchange tubes and a second layer of heat exchange tubes; The heat exchange section is curved, so that one side surface of the heat exchange section is a concave surface and the other side surface is a convex surface, and the first layer of heat exchange tubes is located inside the second layer of heat exchange tubes. The third tube sheet is at least disposed on the first layer of heat exchange tubes.

4. The heat exchanger according to claim 1, characterized in that, The heat exchange section includes: The first plate-shaped portion is vertically arranged, and the first tube sheet is disposed at one end of the first plate-shaped portion; The second plate-shaped portion is vertically arranged, and the second tube sheet is disposed at the other end of the second plate-shaped portion; A curved portion, wherein the curved portion connects the first plate-shaped portion and the second plate-shaped portion; The third tube sheet is disposed on the curved portion; The ratio between the distance between the third tube sheet and the first tube sheet and the distance between the third tube sheet and the second tube sheet is 0.6 to 0.

8.

5. The heat exchanger according to claim 4, characterized in that, The ratio between the distance the first plate-shaped portion extends horizontally and the distance the second plate-shaped portion extends horizontally is 0.45 to 0.

7.

6. The heat exchanger according to claim 4, characterized in that, The curved portion includes a first arc-shaped portion and a second arc-shaped portion that are connected to each other. The first arc-shaped portion and the second arc-shaped portion are coaxial and have the same radius. The first arc-shaped portion is connected to the first plate-shaped portion; The second arc-shaped portion is connected to the second plate-shaped portion; The third tube sheet is disposed at the connection between the first arc-shaped portion and the second arc-shaped portion; The ratio between the degree measure of the central angle of the first arc portion and the degree measure of the central angle of the second arc portion is 1 to 1.

1.

7. The heat exchanger according to claim 1, characterized in that, The upper end of the third tube sheet is horizontally provided with a first connecting plate, and the lower end is horizontally provided with a second connecting plate. The first connecting plate and the second connecting plate are located on the same side of the third tube sheet; The upper end of the second tube sheet is provided with a hanging hole and a third connecting plate. The third connecting plate is horizontally arranged and located above the hanging hole.

8. An indoor unit for an air conditioner, characterized in that, include: A bracket having an upper end, a lower end, and a connecting portion connecting the upper end and the lower end; The heat exchanger according to any one of claims 1 to 7, wherein the heat exchanger is disposed on the support, the upper end of the third tube sheet is connected to the upper end, and the lower end supports the lower end of the third tube sheet.

9. The indoor unit of the air conditioner according to claim 8, characterized in that, The lower end defines a water receiving groove, and a support platform is provided inside the water receiving groove; The second connecting plate connected to the lower end of the third tube sheet is disposed on the support platform and is fixedly connected to the support platform.

10. The indoor unit of the air conditioner according to claim 8, characterized in that, The upper end has a first abutting portion, and the lower end has a second abutting portion; The upper side of the first tube sheet near the third tube sheet contacts the first abutting part, and the lower side of the first tube sheet near the third tube sheet contacts the second abutting part. The upper end has a third abutting part, and the lower end has a fourth abutting part; The upper side of the second tube sheet near the third tube sheet contacts the third abutment, and the lower side of the second tube sheet near the third tube sheet contacts the fourth abutment. The third abutment portion is a portion of the surface area of ​​the bracket; the third abutment portion is provided with a protrusion, which is inserted into a hanging hole on the second tube sheet; The third connecting plate on the second tube sheet is fixedly connected to the upper end. The lower end supports the lower ends of the first tube sheet and the second tube sheet; The first tube sheet and the second tube sheet are fixedly connected to the connecting part.

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