Air conditioner indoor unit and air conditioner

Abstract

The embodiment of the utility model provides an air conditioner indoor unit and an air conditioner. The air conditioner indoor unit comprises a machine shell, a cross-flow fan, an evaporator and a heating element. The machine shell is provided with an air inlet, an air outlet and an air supply channel communicated with the air inlet and the air outlet, and the air outlet is located above the air inlet. The cross-flow fan, the evaporator and the heating element are all arranged in the air supply channel; the cross-flow fan is arranged above the heating element, and the heating element is arranged between the evaporator and the cross-flow fan and has a minimum preset gap epsilon. Furthermore, an enough distance can be reserved for shaking of the heating element and the cross-flow fan during falling or transportation, and the problem that the heating element is deformed and even damaged due to collision between the heating element and the cross-flow fan due to shaking is effectively avoided. Therefore, the air conditioner indoor unit has the advantages that the passing rate of prototype testing is increased, and the transportation loss is reduced.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, specifically to an indoor air conditioning unit and an air conditioner having the indoor air conditioning unit. Background Technology

[0002] The heating element is one of the main components of an air conditioner, effectively improving its heating performance when outdoor temperatures are low. In related technologies, the heating element is often installed close to other components. However, due to the relatively low overall structural strength of the heating element, to ensure the air conditioner can withstand harsh operating conditions, drop tests are usually required on the indoor unit during assembly, and the air conditioner also needs to be transported after assembly. During drop tests or transportation, the heating element may experience deformation or even damage due to its low structural strength, thus affecting its normal operation. Utility Model Content

[0003] This utility model aims to at least partially solve one of the technical problems in related technologies. To this end, an embodiment of this utility model proposes an indoor air conditioning unit. This indoor air conditioning unit has the advantages of improving the pass rate of prototype testing and reducing transportation losses.

[0004] An embodiment of this utility model also proposes an air conditioner.

[0005] The indoor unit of the air conditioner in this embodiment of the utility model includes a casing, a cross-flow fan, an evaporator, and a heating element.

[0006] The housing has an air inlet, an air outlet, and an air supply channel connecting the air inlet and the air outlet, with the air outlet located above the air inlet; the cross-flow fan, evaporator, and heating element are all disposed within the air supply channel; the cross-flow fan is disposed above the heating element, and the heating element is disposed between the evaporator and the cross-flow fan, with a minimum preset gap ε between the heating element and the cross-flow fan.

[0007] The indoor unit of this air conditioner, by placing the heating element between the evaporator and the cross-flow fan and limiting a preset gap ε between the heating element and the cross-flow fan, effectively avoids the problem of deformation or even damage to the heating element caused by collisions due to shaking. This improves the pass rate of indoor unit testing and reduces the rate of damage during transportation. Furthermore, this indoor unit helps reduce economic losses incurred during the testing and transportation of prototypes.

[0008] Therefore, the indoor air conditioning unit of this utility model has the advantages of improving the pass rate of prototype testing and reducing transportation losses.

[0009] In some embodiments, the heating element and the cross-flow fan have a minimum preset gap of ε, where 15mm≤ε≤25mm.

[0010] In some embodiments, the distance between the center of the heating element and the central axis of the cross-flow fan is H, where 70mm ≤ H ≤ 90mm.

[0011] In some embodiments, the diameter of the cross-flow fan is D, where 94mm ≤ D ≤ 120mm.

[0012] In some embodiments, the heating element has a heating element and a heat sink, the heat sink being disposed on both sides of the heating element in the front-rear direction of the housing, the heating element having a heating center, the heating center being collinear with the cross-flow fan in the height direction of the housing, and the distance between the heating center and the central axis of the cross-flow fan being H.

[0013] In some embodiments, in a cross section orthogonal to the length direction of the housing, the evaporator includes a first component and a second component arranged at an angle, and the joint between the first component and the second component protrudes toward the air inlet, and the heating element is disposed within the angled area formed by the first component and the second component.

[0014] In some embodiments, the minimum distance between the heating element and the first component is L1, 10mm≤L2≤20mm.

[0015] In some embodiments, the minimum distance between the heating element and the second component is L2, where 10mm ≤ L1 ≤ 16mm.

[0016] In some embodiments, in a cross section orthogonal to the length direction of the housing, the included angle between the first component and the second component is γ, where 60°≤γ≤80°.

[0017] In some embodiments, the housing includes a base and a front panel connected together, the air outlet is disposed at the upper end of the front panel, and a volute extending toward the interior of the air supply channel is provided on one end of the front panel forming the air outlet. The end of the first component opposite to the docking point abuts against the volute, and the end of the second component opposite to the docking point abuts against the base.

[0018] In some embodiments, in a cross section orthogonal to the length direction of the housing, the included angle between the front panel and the first component is α, where 15°≤α≤30°.

[0019] In some embodiments, the base has a guide surface that is inclined in a direction from back to front at a section near the air inlet, and the angle between the second component and the guide surface is β, where 10°≤β≤25°.

[0020] In some embodiments, on a cross section orthogonal to the length direction of the housing, the front panel extends along the height direction of the housing or is arranged to gradually tilt backward in a top-to-bottom direction, and the angle between the front panel and the height direction of the housing is θ, where 0°≤θ≤20°.

[0021] The air conditioner of this utility model embodiment includes an outdoor unit and an indoor unit as described above, wherein the outdoor unit is connected to the indoor unit. Attached Figure Description

[0022] Figure 1 This is a cross-sectional view of the indoor unit of the air conditioner according to an embodiment of the present utility model.

[0023] Figure label:

[0024] Casing 1; Base 11; Front panel 12; Volute tongue 13;

[0025] Air inlet 101; Air outlet 102;

[0026] Cross-flow fan 2;

[0027] Heating element 3;

[0028] Evaporator 4; First component 41; Second component 42;

[0029] Water tray 5;

[0030] 6. Air intake grille. Detailed Implementation

[0031] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0032] The following is for reference. Figure 1 This invention describes an indoor air conditioning unit and an air conditioner according to embodiments of the present invention.

[0033] The indoor unit of the air conditioner in this embodiment of the utility model includes a casing 1, a cross-flow fan 2, an evaporator 4, and a heating element 3.

[0034] The casing 1 has an air inlet 101, an air outlet 102, and an air supply channel connecting the air inlet 101 and the air outlet 102. The air outlet 102 is located above the air inlet 101. The cross-flow fan 2, the evaporator 4, and the heating element 3 are all located in the air supply channel. The cross-flow fan 2 is located above the heating element 3, and the heating element 3 is located between the evaporator 4 and the cross-flow fan 2. There is a minimum preset gap ε between the heating element 3 and the cross-flow fan 2.

[0035] The indoor unit of this air conditioner embodiment, by placing the heating element 3 between the evaporator 4 and the cross-flow fan 2, and limiting the preset gap ε between the heating element 3 and the cross-flow fan 2, effectively avoids the problem of deformation or even damage to the heating element 3 due to collisions caused by shaking. Therefore, this air conditioner indoor unit improves the pass rate of air conditioner indoor unit testing and reduces the transportation damage rate. Furthermore, this air conditioner indoor unit helps reduce economic losses caused by testing prototypes and transportation.

[0036] Therefore, the indoor air conditioning unit of this utility model has the advantages of improving the pass rate of prototype testing and reducing transportation losses.

[0037] Specifically, such as Figure 1 As shown, the air inlet 101 is formed at the lower end of the housing 1, and the air outlet 102 is located in the area in front of the housing 1 and near the upper end. To filter particles in the airflow entering the air supply duct, an air inlet grille 6 can also be provided on the air inlet 101. To adjust the air outlet angle, a guide vane can also be provided on the air outlet 102.

[0038] like Figure 1 As shown, the minimum preset gap between the heating element 3 and the cross-flow fan 2 is ε, 15mm≤ε≤25mm. It can be understood that the minimum preset gap between the outer periphery of the heating element 3 and the outer periphery of the cross-flow fan 2 is ε.

[0039] The indoor unit of this utility model, by limiting the gap range between the heating element 3 and the cross-flow fan 2, avoids the problem of excessively large gap ε occupying too much internal space in the casing 1, leading to difficulties in the placement of other components; on the other hand, it also avoids the problem of excessively small gap ε causing easy damage to the heating element 3 during drop tests and transportation. Therefore, the indoor unit of this utility model achieves a compact structural layout while fully meeting the safety requirements for drop tests and transportation vibrations.

[0040] Optionally, the minimum preset gap ε between the heating element 3 and the cross-flow fan 2 can be 15mm, 16mm, 17mm, 18mm, 19mm, 20mm, 21mm, 22mm, 23mm, 24mm and 25mm, etc.

[0041] like Figure 1 As shown, in some embodiments, the diameter of the cross-flow fan 2 is D, where 94mm ≤ D ≤ 120mm. This allows for a reduction in the overall size of the indoor air conditioning unit while still meeting airflow requirements.

[0042] Optionally, the diameter D of the cross-flow fan 2 can be 94mm, 96mm, 98mm, 100mm, 102mm, 104mm, 105mm, 108mm, 110mm, 112mm, 114mm, 116mm, 118mm or 120mm, etc.

[0043] Furthermore, in a cross section orthogonal to the length of the housing 1, the distance between the center of the heating element 3 and the central axis of the cross-flow fan 2 is H, 70mm≤H≤90mm.

[0044] The indoor unit of this utility model, by limiting the distance H between the center of the heating element 3 and the central axis of the cross-flow fan 2 to 70mm-90mm, avoids the problem of excessive space occupation of the internal space of the casing 1 due to an excessively large distance H, and also avoids the problem of easy damage to the heating element 3 during drop tests and transportation due to an excessively small distance H. Therefore, the indoor unit of this utility model, combined with the diameter D of the cross-flow fan 2, meets the requirements of drop testing and transportation vibration, while further improving the compactness of the indoor unit structure.

[0045] Optionally, the distance H between the center of the heating element 3 and the central axis of the cross-flow fan 2 can be 70mm, 72mm, 74mm, 75mm, 76mm, 78mm, 80mm, 82mm, 83mm, 85mm, 86mm, 88mm and 90mm, etc.

[0046] Heating element 3 has a heating element and heat sinks. The heat sinks are arranged on both sides of the heating element in the front-rear direction of the housing 1. The heating element has a heating center, and the heating center and the central axis of the cross-flow fan 2 are in the height direction of the housing 1 (e.g., ...). Figure 1 The heating element is collinear in the vertical direction, and the distance between the heating center and the central axis of the cross-flow fan 2 is H. For example, if the heating element is cylindrical, the distance between the center of the cylindrical heating element and the central axis of the cross-flow fan 2 is H.

[0047] The indoor unit of this utility model, by aligning the heating center and the central axis of the cross-flow fan 2 collinearly along the height of the casing 1, ensures that during a drop test, the heating element and the cross-flow fan 2 will experience significant vertical movement. With a fixed clearance, this satisfies the condition of avoiding collision in the vertical direction, thus also meeting the safety distance requirements in other directions. Therefore, the indoor unit of this utility model not only achieves a high success rate in drop tests but also further improves the compactness of the indoor unit's structure.

[0048] like Figure 1 As shown, in a cross section orthogonal to the length direction of the casing 1, the evaporator 4 includes a first component 41 and a second component 42 arranged at an angle, and the joint of the first component 41 and the second component 42 protrudes toward the air inlet 101 to form an angled area between the first component 41 and the second component 42, and the heating element 3 is disposed in the angled area formed by the first component 41 and the second component 42.

[0049] The indoor unit of this air conditioner, by placing the heating element 3 within the angled area formed by the first component 41 and the second component 42, can improve the heating uniformity of the evaporative airflow between the first component 41 and the second component 42. This, in turn, improves the uniformity of the outlet air temperature of the indoor unit.

[0050] In some embodiments, the evaporator 4 is arranged in a two-fold integral structure, which makes the internal structure of the air conditioner indoor unit relatively simple, the air circulation path short and direct, and the air circulation space relatively large. This avoids the situation where the internal space is tight and affects the air intake when the structure is complex, reduces the possibility of dust accumulation, reduces the overall wind resistance and fan load, and also reduces the energy consumption ratio of the air conditioner and the user's operating cost. In this way, it can improve the air volume and reduce noise.

[0051] This application is not limited to this. In other embodiments, the evaporator 4 can also be set in two parts. The evaporator 4 can be divided into two parts according to the different extension directions. The two parts are the first part 41 and the second part 42. The first part 41 and the second part 42 can both be generally flat plate structures. The first part 41 can be arranged inclined in the direction of front-up and back-down, and the second part 42 can be arranged inclined in the direction of back-up and front-down.

[0052] The bottom ends of the first component 41 and the second component 42 can overlap or abut against each other, and the connection point between the bottom ends of the first component 41 and the bottom ends of the second component 42 forms the mating point of the two components. Specifically, the first component 41 and the second component 42 are generally V-shaped, and the mating point of the first component 41 and the second component 42 protrudes downward, and the air inlet 101 is located directly below the mating point.

[0053] In some embodiments, such as Figure 1 As shown, the minimum distance between the heating element 3 and the first component 41 is L1, 10mm≤L2≤20mm. Optionally, the minimum distance L1 can be 10mm, 12mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm or 20mm, for example, L1 can be 15mm.

[0054] The indoor unit of this utility model, by limiting the minimum distance L1 between the heating element 3 and the first component 41, avoids the problem of excessive distance between the heating element 3 and the first component 41 affecting the overall structural compactness, thus ensuring the compactness of the structural arrangement. On the other hand, it also avoids the problem of damage during transportation or drop tests due to excessively small distance between the heating element 3 and the first component 41. Therefore, the indoor unit of this utility model combines the advantages of good compactness and high safety.

[0055] In some embodiments, such as Figure 1 As shown, the minimum distance between the heating element 3 and the second component 42 is L2, where 10mm ≤ L2 ≤ 16mm. Optionally, the minimum distance L2 can be 10mm, 11mm, 12mm, 13mm, 14mm, 15mm, 16mm, etc. For example, L2 can be 13mm.

[0056] Similarly, the air conditioner indoor unit of this utility model embodiment, by limiting the minimum distance L2 between the heating element 3 and the second component 42, also has the advantages of good compactness and high safety.

[0057] In some embodiments, such as Figure 1 As shown, in a cross-section orthogonal to the length of the housing 1, the included angle between the first component 41 and the second component 42 is γ, where 60° ≤ γ ≤ 80°. For example, as... Figure 1 As shown, the included angle γ can specifically be the angle formed by the rear wall surface of the first component 41 and the front wall surface of the second component 42. The included angle γ can specifically be 60°, 62°, 65°, 68°, 70°, 72°, 75°, 78° and 80°, etc.

[0058] The indoor unit of the air conditioner in this embodiment of the utility model, by limiting the range of the included angle γ, allows the air within this range to smoothly enter and exit the evaporator 4 for heat exchange. At the same time, it helps the condensate to be smoothly discharged along the evaporator 4 under the action of gravity. The drainage effect of the evaporator 4 can reduce the risk of air conditioner leakage. The bottom of the evaporator 4 can be equipped with a water tray 5 for collecting condensate.

[0059] Furthermore, the housing 1 includes a base 11 and a front panel 12 connected together. The front panel 12 is disposed on the front side of the housing 1, opposite to the base 11. An air outlet 102 is disposed on the upper end of the front panel 12. A volute tongue 13 extending toward the interior of the air supply channel is provided on one end of the front panel 12 forming the air outlet 102. The end of the first component 41 opposite to the docking point abuts against the volute tongue 13, and the end of the second component 42 opposite to the docking point abuts against the base 11.

[0060] For example, such as Figure 1 As shown, along the front-rear direction of the housing 1, the first component 41 can be located in front of the second component 42 and behind the front panel 12. The end of the first component 41 abuts against the volute tongue 13, while the base 11 is located in front of the second component 42. The top part of the second component 42 can abut against the inner wall of the base 11, thereby ensuring the structural stability of the assembly of the second component 42.

[0061] In some embodiments, such as Figure 1 As shown, in a cross-section orthogonal to the length of the housing 1, the included angle between the front panel 12 and the first component 41 is α, where 15° ≤ α ≤ 30°. Specifically, the included angle α can be the angle formed between the front wall surface of the first component 41 and the inner wall surface of the front panel 12. Optionally, the included angle α can be 15°, 18°, 20°, 22°, 25°, 28°, or 30°, etc.

[0062] The indoor unit of the air conditioner in this embodiment of the utility model limits the included angle α between the front panel 12 and the first component 41 to 5° to 30°. When the distance between the front panel 12 and the first component 41 in the front-rear direction is constant, air can smoothly enter the air inlet gap between the first component 41 and the front panel 12 from the lower air inlet 101 at a relatively gentle angle. During this process, a relatively uniform airflow distribution can be formed on the surface of the first component 41, so that the evaporator 4 can fully exchange heat with the air, ensuring the heat exchange efficiency of the evaporator 4, thereby helping to improve the cooling or heating effect of the air conditioner.

[0063] The base 11 has a guide surface that is inclined in the direction from back to front on a section near the air inlet 101. The angle between the second component 42 and the guide surface is β, where 10°≤β≤25°.

[0064] Similarly, the angle β between the second component 42 and the guide surface is limited to 10° to 25°, which allows air within this range to smoothly enter and exit the evaporator 4 for heat exchange, while also helping condensate to be smoothly discharged along the evaporator 4 under gravity. The guiding effect of the evaporator 4 can reduce the risk of air conditioner leakage.

[0065] Furthermore, the base 11 has a vertical surface facing the second component 42 and an inclined guide surface, wherein the guide surface is located below the vertical surface. Specifically, a portion of the inner wall surface of the base 11 can be arranged inclined from rear-upper to front-lower, and this inclined inner wall surface forms the guide surface. The top end of the second component 42 can abut against the vertical surface of the base 11. The angle between the rear wall surface of the second component 42 and the guide surface is β. For example, the angle between the second component 42 and the guide surface is β. Optionally, β can be 10°, 11°, 13°, 15°, 18°, 20°, 22°, and 25°, etc.

[0066] In a cross section orthogonal to the length direction of the housing 1, the front panel 12 extends along the height direction of the housing 1 (e.g., Figure 1 As shown in the vertical direction, it extends or is arranged to gradually slope backward in a top-to-bottom direction. Specifically, the front wall of the front panel 12 extends from top to bottom and is arranged to slope backward, that is, the front wall of the front panel 12 is an inclined surface that slopes backward from top to bottom, and the upper end of the front wall of the front panel 12 is located in front of the lower end of the front wall of the front panel 12.

[0067] In this embodiment of the utility model, the air outlet 102 of the indoor unit of the air conditioner faces forward and is located above the front panel 12. The airflow from the air outlet 102 flows downward along the extension direction of the front panel 12. The front wall of the front panel 12 is tilted backward, and the front wall of the front panel 12 guides the airflow to flow downward along the front wall of the front panel 12. The further down the airflow flows, the further back the front wall of the front panel 12 is from the vertical plane, making it easier for the airflow to flow downward and reach the ground. Moreover, it increases the flow distance of the airflow on the ground, thereby increasing the sweeping area.

[0068] In addition, this allows some airflow to pass under the air outlet 102 in heating mode. This airflow will then re-enter the air supply channel through the air inlet 101, achieving internal circulation of hot air. This can sterilize the heat exchanger at high temperature and prevent odors from appearing in the indoor unit of the air conditioner.

[0069] Furthermore, the angle between the extension direction of the front panel 12 and the height direction of the housing 1 is θ, where 0° ≤ θ ≤ 20°. Optionally, θ can be 0°, 2°, 4°, 5°, 6°, 8°, 10°, 12°, 14°, 16°, 18°, or 20°.

[0070] Understandably, a larger tilt angle of the front panel 12 results in more hot air entering through the air inlet 101, leading to better high-temperature sterilization of the heat exchanger. However, this reduces the amount of hot air entering the room, hindering the heating performance of the indoor unit. Conversely, a smaller tilt angle of the front panel 12 results in less hot air entering through the air inlet 101, leading to more hot air entering the room, which improves the heating performance of the indoor unit, but reduces the effectiveness of high-temperature sterilization by the heat exchanger. Therefore, setting the angle between the extension direction of the front panel 12 and the height direction of the casing 1 to 0° to 20° ensures both the high-temperature sterilization effect of the heat exchanger without affecting the indoor heating performance. This also avoids the situation where a large tilt angle of the front panel 12 would encroach on the internal space of the indoor unit, leaving sufficient internal space for the installation of internal components such as the evaporator 4.

[0071] The air conditioner according to this utility model embodiment includes an outdoor unit and an indoor unit as described above, wherein the outdoor unit and the indoor unit are connected. Specifically, the indoor unit can be a wall-mounted air conditioner.

[0072] Therefore, the air conditioner of this utility model embodiment can meet the requirements of drop testing, while also having the advantage of reducing transportation damage in actual transportation.

[0073] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0074] Furthermore, 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0075] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., 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, an electrical connection, or a connection that allows communication between them; 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 explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0076] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0077] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0078] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An indoor unit for an air conditioner, characterized in that, include: The housing has an air inlet, an air outlet, and an air supply channel connecting the air inlet and the air outlet, with the air outlet located above the air inlet; The system includes a cross-flow fan, an evaporator, and a heating element, all of which are located within the air supply channel. The cross-flow fan is positioned above the heating element, and the heating element is positioned between the evaporator and the cross-flow fan. A minimum preset gap ε exists between the heating element and the cross-flow fan.

2. The indoor unit of the air conditioner according to claim 1, characterized in that, 15mm≤ε≤25mm; And / or, the distance H between the center of the heating element and the central axis of the cross-flow fan is 70mm≤H≤90mm; And / or, the diameter of the cross-flow fan is D, 94mm≤D≤120mm.

3. The indoor unit of the air conditioner according to claim 1, characterized in that, The heating element has a heating element and a heat sink. The heat sink is disposed on both sides of the heating element in the front-rear direction of the housing. The heating element has a heating center. The heating center is collinear with the central axis of the cross-flow fan in the height direction of the housing. The distance between the heating center and the central axis of the cross-flow fan is H.

4. The indoor unit of the air conditioner according to claim 1, characterized in that, In a cross section orthogonal to the length of the housing, the evaporator includes a first component and a second component arranged at an angle, with the joint between the first component and the second component protruding toward the air inlet, and the heating element disposed within the angled area formed by the first component and the second component.

5. The indoor unit of the air conditioner according to claim 4, characterized in that, The minimum distance between the heating element and the first component is L1, where 10mm ≤ L1 ≤ 20mm; And / or, the minimum distance between the heating element and the second component is L2, 10mm≤L2≤16mm.

6. The indoor unit of the air conditioner according to claim 4, characterized in that, Within a cross section orthogonal to the length of the housing, the included angle between the first component and the second component is γ, where 60°≤γ≤80°.

7. The indoor unit of the air conditioner according to claim 4, characterized in that, The housing includes a base and a front panel connected together. The air outlet is located at the upper end of the front panel. A volute extending into the air supply channel is provided on the area of ​​the front panel near the upper end. The end of the first component opposite to the docking point abuts against the volute, and the end of the second component opposite to the docking point abuts against the base.

8. The indoor unit of the air conditioner according to claim 7, characterized in that, In a cross section orthogonal to the length of the housing, the included angle between the front panel and the first component is α, where 15°≤α≤30°; And / or, a section of the base near the air inlet has a guide surface that is inclined in a direction from back to front, and the included angle between the second component and the guide surface is β, 10°≤β≤25°.

9. The indoor unit of the air conditioner according to claim 7, characterized in that, On a cross section orthogonal to the length direction of the housing, the front panel extends along the height direction of the housing or is arranged to gradually tilt backward in a top-to-bottom direction, and the angle between the front panel and the height direction of the housing is θ, where 0°≤θ≤20°.

10. An air conditioner, characterized in that, It includes an outdoor air conditioning unit and an indoor air conditioning unit as described in any one of claims 1-9, wherein the outdoor air conditioning unit is connected to the indoor air conditioning unit.

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