Air conditioner and air conditioner indoor unit thereof

Abstract

The invention provides an air conditioner and an air conditioner indoor unit thereof. The air conditioner indoor unit comprises a machine shell, the rear side of the machine shell is provided with an air inlet, the front side of the machine shell is provided with an air outlet, and an air supply channel communicating with the air inlet and the air outlet is formed in the machine shell; the heat exchanger is arranged close to the air inlet in the machine shell and is used for exchanging heat with airflow flowing in from the air inlet; the cross-flow fan is arranged in the air supply duct and used for being controlled to rotate so that airflow after heat exchange can be blown out from the air outlet. The machine shell is provided with a center line extending transversely, and the center point of the cross-flow fan is located on the rear side of the center line. The cross-flow fan has the advantages that the cross-flow fan is arranged backwards in the machine shell, so that the front side space of the cross-flow fan is increased, and more expanded new products can be directly carried on the front side of the machine shell on the premise that the thickness of the whole machine is not changed.

Description

Technical Field

[0001] The present invention relates to the field of air conditioning equipment, in particular to an air conditioner and an air conditioner indoor unit thereof. Background Art

[0002] A split-type air conditioner generally includes an outdoor unit and an indoor unit. The indoor unit draws indoor air from the air inlet into the chamber through its internal negative pressure device, and then after heat exchange through the heat exchanger, it is discharged from the air outlet to the indoor environment to achieve indoor temperature regulation.

[0003] The indoor unit of the air conditioner generally includes a vertical indoor unit and a hanging indoor unit. The vertical indoor unit includes a casing, an evaporator and a fan, the casing is provided with an air inlet and an air outlet, the evaporator and the fan are arranged in the casing, and the evaporator is located between the air inlet and the fan.

[0004] The fan of the existing vertical indoor unit is usually located in the middle or front of the thickness of the whole machine, resulting in a smaller space in front of the fan. This greatly limits the expandability of new front-mounted products (such as large horizontal swing blades, single fan with dual air outlets), and thus needs to be improved. Summary of the invention

[0005] An object of the present invention is to overcome at least one technical defect in the prior art and to provide an air conditioner and an air conditioner indoor unit thereof.

[0006] A further object of the present invention is to dispose the cross-flow fan at the rear of the casing to increase the front space of the cross-flow fan.

[0007] Another further object of the present invention is to arrange the positions of the heat exchangers in a reasonable manner.

[0008] A further object of the present invention is to improve the heat exchange efficiency of the heat exchanger.

[0009] In particular, according to a first aspect of the present invention, the present invention provides an air conditioner indoor unit, comprising:

[0010] A casing, wherein the casing has an air inlet on the rear side, an air outlet on the front side, and an air supply duct inside the casing connecting the air inlet and the air outlet;

[0011] a heat exchanger, disposed in the housing adjacent to the air inlet, for exchanging heat with the airflow flowing in from the air inlet; and

[0012] A cross-flow fan is arranged in the air supply duct and is used for controlled rotation so that the airflow after heat exchange is blown out from the air outlet;

[0013] Wherein, the center point of the cross-flow fan is located at the rear side of the laterally extending center line of the casing.

[0014] Optionally, the heat exchanger comprises a first straight plate section, a second straight plate section and an arc-shaped bending section connecting the two, the arc-shaped bending section is concave toward the cross-flow fan, and the first straight plate section extends in the front-rear direction of the casing, and the second straight plate section extends in the transverse direction of the casing;

[0015] The length of the first straight plate section is greater than that of the second straight plate section, and the inlet and outlet liquid pipes of the heat exchanger are arranged on the front side of the first straight plate section.

[0016] Optionally, the heat exchanger is arranged in the air supply duct toward the second straight plate segment, so that a high wind zone is formed in an area adjacent to the first straight plate segment, and a low wind zone is formed in an area adjacent to the second straight plate segment.

[0017] Optionally, the central angle of the arc-shaped bending section is 125° to 150°; and

[0018] The length ratio of the first straight plate section to the second straight plate section is 3:1.5 to 3:2.5.

[0019] Optionally, the housing includes a front shell and a rear shell that are interlocked, and the front side of the first straight plate section extends into the front shell.

[0020] Optionally, a heat exchange gap is reserved between the front side of the rear shell and the first straight plate section.

[0021] Optionally, the air supply duct has a front volute tongue and a rear volute tongue, the rear volute tongue is formed between the cross-flow fan and the second straight plate segment, the front volute tongue is formed on the front side of the cross-flow fan, and a guide plate is provided between the front side of the first straight plate segment.

[0022] Optionally, the distance between the front volute tongue and the edge of the cross-flow fan is 8.4 mm to 9.4 mm; and

[0023] The distance between the rear volute tongue and the edge of the cross-flow fan is 6.5 mm to 8.1 mm.

[0024] Optionally, the air conditioner indoor unit further includes:

[0025] The horizontal swing blades and the vertical swing blades are sequentially arranged in the air supply duct along the front-rear direction of the casing, and are respectively controlled to swing longitudinally or laterally to adjust the softness of the airflow flowing out of the air outlet.

[0026] According to a second aspect of the present invention, the present invention provides an air conditioner, comprising:

[0027] Air conditioner outdoor unit; and

[0028] The air conditioner indoor unit described in any one of the above is connected to the air conditioner outdoor unit by pipeline.

[0029] The center point of the cross-flow fan of the indoor unit of the air conditioner of the present invention is located at the rear side of the center line of the horizontal extension of the casing. In other words, the cross-flow fan is arranged at the rear side in the casing, which can provide sufficient space in front of the cross-flow fan, breaking the space constraint on the expansion of new products. When a new front-end product is developed, the product can be directly placed in front of the cross-flow fan without increasing the thickness of the casing.

[0030] Furthermore, the air-conditioning indoor unit of the present invention, after the cross-flow fan is placed at the rear, will result in a completely new matching of the profile, by making the first straight plate section of the heat exchanger tend to extend in the front-to-rear direction of the casing, and the second straight plate section tend to extend in the lateral direction of the casing. In this way, the inlet and outlet liquid pipes of the heat exchanger can be arranged on the front side of the first straight plate section, thereby avoiding the inlet and outlet liquid pipes from hindering the rearward movement of the cross-flow fan.

[0031] Furthermore, in the indoor unit of the air conditioner of the present invention, the heat exchanger is arranged in the air supply duct toward the second straight plate section, so that the area adjacent to the first straight plate section forms a high wind area, and the area adjacent to the second straight plate section forms a low wind area. In this way, the longer first straight plate section can be used as the main heat exchange section to quickly exchange heat with the airflow, which is conducive to improving the heat exchange efficiency of the heat exchanger and realizing rapid adjustment of the indoor temperature.

[0032] Based on the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more aware of the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0034] Figure 1 is a schematic cross-sectional view of an indoor unit of an air conditioner according to an embodiment of the present invention;

[0035] Figure 2 yes Figure 1 A schematic enlarged view of part A;

[0036] Figure 3 yes Figure 1 Schematic layout of the heat exchanger and cross-flow fan.

[0037] Reference numerals:

[0038] 10. Air conditioner indoor unit; 100. Casing; 101. Air inlet; 102. Air outlet; 103. Heat exchange interval; 110. Front shell; 120. Rear shell; 121. Support part; 130. Air supply duct; 131. High wind area; 132. Low wind area; 133. Front volute tongue; 134. Rear volute tongue; 135. Drain plate; 200. Heat exchanger; 210. First straight plate section; 220. Second straight plate section; 230. Arc-shaped bending section; 240. Inlet and outlet liquid pipes; 300. Cross-flow fan; 410. Horizontal swing blade; 420. Vertical swing blade; 500. Electric auxiliary heating device. DETAILED DESCRIPTION

[0039] Reference will now be made in detail to embodiments of the present invention, one or more examples of which are illustrated in the accompanying drawings. The various embodiments provided are intended to explain the present invention, not to limit the present invention. In fact, it will be apparent to those skilled in the art that various modifications and variations may be made to the present invention without departing from the scope or spirit of the present invention. For example, a feature illustrated or described as a part of one embodiment may be used together with another embodiment to produce yet another embodiment. Therefore, the present invention is intended to cover such modifications and variations within the scope of the appended claims and their equivalents.

[0040] Refer to the following Figures 1 to 3 The air conditioner and the air conditioner indoor unit 10 of the embodiment of the present invention are described in detail. The directions or positional relationships indicated by "front", "rear", "inside", "outside", "up", "down", "top", "bottom", "horizontal", "longitudinal" and the like are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In order to facilitate the illustration of the structure of the device, some of the drawings of the present invention are illustrated in perspective.

[0041] In the description of this embodiment, it should be understood that the term "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined. When a feature "includes or contains" one or some of the features it covers, unless otherwise specifically described, this indicates that other features are not excluded and may further include other features.

[0042] In the description of the present embodiment, the description with reference to the terms "one embodiment", "some embodiments", "some examples", "an example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0043] In one aspect, the present invention provides an air conditioner indoor unit 10 .

[0044] The present invention does not impose any limitation on the form of the air-conditioning indoor unit 10 , and the air-conditioning indoor unit 10 may be a vertical indoor unit, a wall-mounted indoor unit, a window-type indoor unit, or other forms of indoor units.

[0045] Figure 1 is a schematic cross-sectional view of an air-conditioning indoor unit 10 according to an embodiment of the present invention, Figure 2 yes Figure 1 A schematic enlarged view of part A in the figure. Figure 3 yes Figure 1 Schematic layout diagram of the heat exchanger 200 and the cross-flow fan 300. Figures 1 to 3 An embodiment of a vertical type indoor unit is shown.

[0046] like Figures 1 to 3 As shown, the air conditioner indoor unit 10 may generally include a housing 100, a heat exchanger 200 and a cross-flow fan 300. A housing space is defined in the housing 100 to accommodate main components such as the heat exchanger 200 and the cross-flow fan 300. The housing 100 has an air inlet 101 at the rear side and an air outlet 102 at the front side, and the housing 100 has an air supply duct 130 connecting the air inlet 101 and the air outlet 102. The heat exchanger 200 is arranged in the housing 100 adjacent to the air inlet 101 for heat exchange with the air flow flowing in from the air inlet 101. The cross-flow fan 300 is arranged in the air supply duct 130 for controlled rotation so that the air flow after heat exchange is blown out from the air outlet 102.

[0047] It can be understood that in cooling mode, the airflow blown out from the air outlet 102 is cooling airflow; in heating mode, the airflow blown out from the air outlet 102 is heating airflow. Of course, if the air conditioner indoor unit 10 also has functions such as purification, dehumidification, and fresh air, the airflow blown out from the air outlet 102 can also be the corresponding purification airflow, dehumidification airflow, fresh air flow, etc.

[0048] In the related art, the center point of the cross-flow fan 300 is located in front of or in the middle of the laterally extended center line of the casing 100, resulting in a smaller front space of the cross-flow fan 300. In the subsequent product development process, it is difficult to install a large horizontal swing blade 410 structure, a single fan dual outlet structure, etc. on this type of indoor unit, which seriously restricts product development, and forced installation requires increasing the thickness of the entire machine.

[0049] To solve the above problems, in the present invention, the center point of the cross-flow fan 300 is creatively set on the rear side of the center line of the housing 100 in the lateral direction. The center line indicates the center of the housing 100 in the front-to-back direction, dividing the housing 100 into two equal parts.

[0050] That is to say, the cross-flow fan 300 is arranged at the rear in the casing 100, so that sufficient space is provided in front of the cross-flow fan 300, breaking the space constraints on the expansion of new products. When new front products are developed, the products can be directly placed in front of the cross-flow fan 300 without increasing the thickness of the casing 100.

[0051] In an optional embodiment, the heat exchanger 200 may include an outer heat exchange layer and an inner heat exchange layer arranged in a stacked manner, wherein the outer heat exchange layer is arranged adjacent to the rear side of the casing 100, and the inner heat exchange layer is arranged away from the rear side of the casing 100. Through the double heat exchange between the outer heat exchange layer and the inner heat exchange layer, the heat exchange efficiency and heat exchange effect of the heat exchanger 200 can be improved, thereby effectively ensuring the cooling or heating capacity of the air-conditioning indoor unit 10.

[0052] In one example, both the outer heat exchange layer and the inner heat exchange layer may be formed by arranging heat exchange tubes.

[0053] In an optional embodiment, the heat exchanger 200 may include a first straight plate section 210, a second straight plate section 220, and an arc-shaped bending section 230 connecting the two, wherein the arc-shaped bending section 230 is concave toward the cross-flow fan 300, and the first straight plate section 210 extends toward the front-to-back direction of the housing 100, and the second straight plate section 220 extends toward the lateral direction of the housing 100. In this arrangement, the space occupied by the second straight plate section 220 in the thickness direction (front-to-back) of the housing 100 can be reduced, providing an escape space for the rearward movement of the cross-flow fan 300.

[0054] Furthermore, the length of the first straight plate section 210 is greater than that of the second straight plate section 220, and the inlet and outlet liquid pipes 240 of the heat exchanger 200 are arranged at the front side of the first straight plate section 210. In this way, the second straight plate section 220 can be extended more toward the lateral direction of the housing 100, further reducing the space occupied by the second straight plate section 220 in the front-rear direction of the housing 100.

[0055] In an optional embodiment, the cross-flow fan 300 is arranged in the air supply duct 130 toward the second straight plate section 220, so that the area adjacent to the first straight plate section 210 forms a high wind area 131, and the area adjacent to the second straight plate section 220 forms a low wind area 132. In this arrangement, the cross-flow fan 300 can better cooperate with the heat exchanger 200, and the longer first straight plate section 210 can be used as the main heat exchange section, so as to give full play to the heat exchange capacity of the first straight plate section 210 and realize rapid adjustment of indoor temperature.

[0056] like Figure 3 As shown, the center P corresponding to the arc-shaped bending section 230 is located to the left and rear of the center O of the cross-flow fan 300, the first straight plate section 210 extends forward as a whole from the left side of the arc-shaped bending section 230, and the second straight plate section 220 extends rightward as a whole from the right side of the arc-shaped bending section 230.

[0057] The central angle θ corresponding to the arc-shaped bending section 230 is 125° to 150°, for example, 125°, 130°, 135°, 140°, 145°, 150°, etc., and the ratio of the length L1 of the first straight plate section 210 to the length L2 of the second straight plate section 220 is 3:1.5 to 3:2.5, for example, 3:1.5, 3:1.8, 3:2, 3:2.2, 3:2.5, etc.

[0058] In this embodiment, the central angle θ corresponding to the arc-shaped bending section 230 is approximately 138.8°, and the length ratio of the first straight plate section 210 to the second straight plate section 220 is approximately 3:2. Without changing the width of the entire machine, the second straight plate section 220 can be extended to the lateral direction of the housing 100 to the maximum extent, thereby providing a maximum escape space for the rearward movement of the cross-flow fan 300.

[0059] In one example, the first straight plate segment 210 , the second straight plate segment 220 and the arc-shaped bending segment 230 may be integrally formed, so that the heat exchanger 200 becomes an integral continuous structure, which is beneficial to improving the heat exchange capacity of the heat exchanger 200 .

[0060] In other examples, the heat exchanger 200 may also be formed by interconnecting the first straight plate segment 210 , the second straight plate segment 220 , and the arc-shaped bending segment 230 , which are independent of each other.

[0061] It can be understood that the cross-section of the heat exchanger 200 of this embodiment is U-shaped, and it is arranged at the air inlet 101, which can increase the contact area between the heat exchanger 200 and the indoor air, that is, increase the heat exchange area between the heat exchanger 200 and the indoor air, and improve the heat exchange efficiency.

[0062] In an optional embodiment, the casing 100 may include a front shell 110 and a rear shell 120, which are interlocked and together define an accommodation space for accommodating the heat exchanger 200 and the cross-flow fan 300, and the front side of the first straight plate section 210 may extend into the front shell 110.

[0063] In this way, the remaining space in the front housing 110 can be used to partially accommodate the first straight plate section 210 and the liquid inlet and outlet pipes 240 , which is beneficial to improving the utilization rate of the internal space of the housing 100 .

[0064] In one example, the front housing 110 and the rear housing 120 can be plugged together. The rear housing 120 can be provided with an air inlet grille (not shown in the figure), and the air inlet 101 is opened on the air inlet grille.

[0065] Furthermore, a support portion 121 may be provided on the front side of the rear housing 120, and at least a portion of the front side of the rear housing 120 may be inserted into the front housing 110, and the overall structural strength of the housing 100 may be improved by the support portion 121. The front side of the air inlet grille may end at the support portion 121, which is conducive to expanding the area of ​​the air inlet 101 on the housing 100, increasing the air intake volume of the air conditioner indoor unit 10, and improving the cooling or heating efficiency of the air conditioner indoor unit 10.

[0066] In one example, a heat exchange interval 103 is reserved between the front side of the rear housing 120 and the first straight plate section 210. The heat exchange interval 103 may be 35 mm to 38 mm, and this heat exchange interval 103 may prevent the support portion 121 from blocking the front side of the first straight plate section 210 during the air intake process, thereby ensuring that the first straight plate section 210 can efficiently exchange heat with the indoor air as a whole.

[0067] like Figure 1 As shown, in the present invention, the air outlet 102 is located in front of the housing 100, and the air supply duct 130 extends first to the right side and then to the left side from the back to the front, so as to communicate with the air outlet 102. The cross-flow fan 300 can form a vortex in the housing 100 to drive the air flow to flow along the direction of the air supply duct 130. On the one hand, the cross-flow fan 300 can form a negative pressure in the housing 100 to suck the indoor air into the housing 100 through the air inlet 101; on the other hand, the cross-flow fan 300 can discharge the air flow after heat exchange in the heat exchanger 200 from the air supply duct 130 and the air outlet 102.

[0068] In an optional embodiment, the air supply duct 130 has a front volute tongue 133 and a rear volute tongue 134, the rear volute tongue 134 is formed between the cross-flow fan 300 and the second straight plate section 220, the front volute tongue 133 is formed at the front side of the cross-flow fan 300, and a guide plate 135 is provided between the front side of the first straight plate section 210 and the front side of the first straight plate section 210. The guide plate 135 can block and guide the airflow after heat exchange from the front side of the first straight plate section 210, ensuring that the airflow after heat exchange can enter the air supply duct 130 relatively smoothly.

[0069] In one example, the edge spacing between the front volute tongue 133 and the cross-flow fan 300 may be 8.4 mm to 9.4 mm, preferably 8.9 mm, and the edge spacing between the rear volute tongue 134 and the cross-flow fan 300 may be 6.5 mm to 8.1 mm, preferably 7.3 mm. By limiting the edge spacing between the front volute tongue 133, the rear volute tongue 134 and the cross-flow fan 300 to the above range, the noise of the cross-flow fan 300 during rotation can be effectively reduced, and the user experience can be improved.

[0070] In an optional embodiment, the air conditioning indoor unit 10 may further include a horizontal swing blade 410 and a vertical swing blade 420, which are sequentially arranged in the air supply duct 130 along the front-to-back direction of the casing 100. The horizontal swing blade 410 swings longitudinally (up and down) in a controlled manner, and the vertical swing blade 420 swings laterally (left and right) in a controlled manner, thereby breaking up the airflow in the air supply duct 130, making the airflow blown out from the air outlet 102 softer, thereby avoiding the airflow blowing directly on the human body and causing discomfort to the human body.

[0071] It should be noted that the horizontal swing blade 410 and the vertical swing blade 420 are widely used in the field of air conditioning, and their structures and principles are well known to those skilled in the art and will not be described in detail here.

[0072] In an optional embodiment, the air conditioner indoor unit 10 may further include an electric auxiliary heating device 500, which may be disposed between the arc-shaped bending section 230 of the heat exchanger 200 and the cross-flow fan 300. In the heating mode, part of the airflow flowing in from the air inlet 101 may flow through the electric auxiliary heating device 500, and the electric auxiliary heating device 500 may be used to assist in heating the airflow, thereby improving the heating capacity of the air conditioner indoor unit 10.

[0073] The air-conditioning indoor unit 10 of the embodiment of the present invention has the above-mentioned layout of the cross-flow fan 300, the evaporator and the profile, so that the overall width of the air-conditioning indoor unit 10 is 350 mm, the overall thickness is 370 mm, and the cross-flow fan 300 with a diameter of 126 mm is adopted. The cross-flow fan 300 is moved backward to provide sufficient front space and achieve the optimal subsequent model expansion plan.

[0074] Another aspect of the present invention provides an air conditioner.

[0075] The air conditioner comprises an outdoor air conditioner and an indoor air conditioner 10, and the indoor air conditioner 10 is connected with the outdoor air conditioner via a pipeline.

[0076] The air-conditioning indoor unit 10 of this embodiment has the same structure as the air-conditioning indoor unit 10 described above, and can bring the same or similar technical effects. For details, please refer to the above embodiment, which will not be repeated here.

[0077] It should be noted that the heat exchanger 200 in the above embodiment refers to an indoor heat exchanger 200. In the cooling mode, the indoor heat exchanger 200 acts as an evaporator; in the heating mode, the indoor heat exchanger 200 acts as a condenser.

[0078] Those skilled in the art can understand that the air conditioner of this embodiment includes an air conditioner outdoor unit and an air conditioner indoor unit 10, and the air conditioner indoor unit 10 and the air conditioner outdoor unit are connected by a pipeline, so that the air conditioner outdoor unit and the air conditioner indoor unit 10 work in coordination with each other to realize the cooling, heating and dehumidification functions of the air conditioner.

[0079] According to any one of the above optional embodiments or a combination of multiple optional embodiments, the embodiments of the present invention can achieve the following beneficial effects:

[0080] The air conditioner indoor unit 10 of the embodiment of the present invention has a housing 100 with a horizontally extending center line, and the center point of the cross-flow fan 300 is located at the rear side of the center line. In other words, the cross-flow fan 300 is arranged at the rear side in the housing 100, so that sufficient space can be provided in front of the cross-flow fan 300, breaking the space constraint on the expansion of new products. When a new front-end product is developed, the product can be directly placed in front of the cross-flow fan 300 without increasing the thickness of the housing 100.

[0081] Furthermore, the air-conditioning indoor unit 10 of the embodiment of the present invention, after the cross-flow fan 300 is placed rearward, will result in a completely new matching of the profile, by making the first straight plate section 210 of the heat exchanger 200 tend to extend in the front-to-back direction of the casing 100, and the second straight plate section 220 tend to extend in the lateral direction of the casing 100. In this way, the inlet and outlet liquid pipes 240 of the heat exchanger 200 can be arranged on the front side of the first straight plate section 210, thereby avoiding the inlet and outlet liquid pipes 240 from hindering the rearward movement of the cross-flow fan 300.

[0082] Furthermore, in the air conditioner indoor unit 10 of the embodiment of the present invention, the heat exchanger 200 is disposed in the air supply duct 130 toward the second straight plate section 220, so that the area adjacent to the first straight plate section 210 forms a high wind area 131, and the area adjacent to the second straight plate section 220 forms a low wind area 132. In this way, the longer first straight plate section 210 can be used as the main heat exchange section to quickly exchange heat with the airflow, which is beneficial to improving the heat exchange efficiency of the heat exchanger 200 and realizing rapid adjustment of the indoor temperature.

[0083] At this point, those skilled in the art should recognize that, although multiple exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications that conform to the principles of the present invention can still be directly determined or derived based on the content disclosed in 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 these other variations or modifications.

Claims

1. An air conditioner indoor unit, comprising: A casing, wherein the casing has an air inlet on the rear side, an air outlet on the front side, and an air supply duct inside the casing connecting the air inlet and the air outlet; a heat exchanger, disposed in the housing adjacent to the air inlet, for exchanging heat with the airflow flowing in from the air inlet; and A cross-flow fan is arranged in the air supply duct and is used for controlled rotation so that the airflow after heat exchange is blown out from the air outlet; Wherein, the center point of the cross-flow fan is located at the rear side of the laterally extending center line of the casing.

2. The air conditioner indoor unit according to claim 1, wherein The heat exchanger comprises a first straight plate section, a second straight plate section and an arc-shaped bending section connecting the two, wherein the arc-shaped bending section is concave toward the cross-flow fan, and the first straight plate section extends in the front-rear direction of the housing, and the second straight plate section extends in the transverse direction of the housing; The length of the first straight plate section is greater than that of the second straight plate section, and the inlet and outlet liquid pipes of the heat exchanger are arranged on the front side of the first straight plate section.

3. The air conditioning indoor unit according to claim 2, wherein The heat exchanger is disposed in the air supply duct toward the second straight plate segment, so that an area adjacent to the first straight plate segment forms a high wind area, and an area adjacent to the second straight plate segment forms a low wind area.

4. The air conditioning indoor unit according to claim 2, wherein The central angle of the arc-shaped bending section is 125° to 150°; and The length ratio of the first straight plate segment to the second straight plate segment is 3:1.5 to 3:2.

5.

5. The air conditioning indoor unit according to claim 2, wherein The housing comprises a front housing and a rear housing which are buckled with each other, and the front side of the first straight plate section extends into the front housing.

6. The air conditioning indoor unit according to claim 5, wherein A heat exchange interval is reserved between the front side of the rear shell and the first straight plate section.

7. The air conditioning indoor unit according to claim 2, wherein: The air supply duct has a front volute tongue and a rear volute tongue, the rear volute tongue is formed between the cross-flow fan and the second straight plate segment, the front volute tongue is formed on the front side of the cross-flow fan, and a guide plate is provided between the front side of the first straight plate segment and the rear volute tongue.

8. The air conditioning indoor unit according to claim 7, wherein The distance between the front volute tongue and the edge of the cross-flow fan is 8.4 mm to 9.4 mm; and The distance between the rear volute tongue and the edge of the cross-flow fan is 6.5 mm to 8.1 mm.

9. The air conditioner indoor unit according to claim 1, further comprising: The horizontal swing blades and the vertical swing blades are sequentially arranged in the air supply duct along the front-rear direction of the casing, and are respectively controlled to swing longitudinally or laterally to adjust the softness of the airflow flowing out of the air outlet.

10. An air conditioner, comprising: Air conditioner outdoor unit; as well as The air conditioner indoor unit according to any one of claims 1 to 9, being connected to the air conditioner outdoor unit by a pipeline.

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