Indoor unit and air conditioner having the same

Abstract

The present invention provides an indoor unit and an air conditioner having the same, wherein the indoor unit comprises: a shell, a panel body, a panel, a large air guide plate and a small air guide plate; the shell is connected to the panel body, and the panel body has an air outlet; the panel is connected to the panel body; the small air guide plate is connected to at least one of the shell, the panel body and the panel, the small air guide plate is arranged adjacent to the large air guide plate, the small air guide plate has a second open position and a second closed position, when the small air guide plate is in the second closed position and the large air guide plate is in the first closed position, the small air guide plate and the large air guide plate close the air outlet, and the end of the large air guide plate close to one end of the small air guide plate is located outside the small air guide plate, when the large air guide plate is in the first open position, a first air duct structure is formed between the inner surface of the large air guide plate and part of the outer surface of the panel. Such an arrangement can achieve seamless cooperation between the large air guide plate and the small air guide plate, and can control the cold air backflow, and prevent the problem of condensation on the small air guide plate.

Description

Technical Field

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

[0002] Air conditioners generally achieve the purpose of air supply through air guide plates placed at the air outlet. The air guide plate is located at the point where the cold and hot air meet at the air outlet. Therefore, when the temperature difference between the inside and outside of the air guide plate is relatively large, condensation water is easily generated on the air guide plate. This condensation water will drip into the room, causing inconvenience to the user's living environment. In particular, the M5 split, due to the air outlet in heating mode, is designed with the small air guide plate rotating inward, and only the large air guide plate is opened in the heating state, resulting in black leakage between the two air guide plates. Therefore, it is necessary to study and design a seamless and anti-condensation air guide plate structure. Summary of the invention

[0003] The main purpose of the present invention is to provide an indoor unit and an air conditioner having the same, so as to solve the problem of a gap between two air guide plates in the prior art.

[0004] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, an indoor unit is provided, comprising: a shell; a panel body, the shell is connected to the panel body, and the panel body has an air outlet; a panel, the panel is connected to the panel body; a large air guide plate, the large air guide plate is connected to at least one of the shell, the panel body and the panel, and the large air guide plate has a first open position and a first closed position; a small air guide plate, the small air guide plate is connected to at least one of the shell, the panel body and the panel, the small air guide plate is arranged adjacent to the large air guide plate, the small air guide plate has a second open position and a second closed position, when the small air guide plate is in the second closed position and the large air guide plate is in the first closed position, the small air guide plate and the large air guide plate close the air outlet, and an end of the large air guide plate close to one end of the small air guide plate is located on the outside of the small air guide plate, and when the large air guide plate is in the first open position, an air outlet duct is formed between the inner surface of the large air guide plate and a part of the outer surface of the panel.

[0005] Further, when the large air guide plate is located at the first closed position or the first open position, the small air guide plate may be selectively located at the second closed position and the second open position.

[0006] Further, when the small air guide plate is located at the second open position, the small air guide plate is located on the inner side of the large air guide plate.

[0007] Furthermore, when the small air guide plate is in the second closed position and the large air guide plate is in the first closed position, the first end of the small air guide plate is arranged adjacent to the first end of the large air guide plate, the second end of the small air guide plate is arranged adjacent to the lower edge of the air outlet, the second end of the large air guide plate overlaps the outer surface of the panel body, and the first end of the large air guide plate is located on the outside of the first end of the small air guide plate.

[0008] Furthermore, the small air guide plate includes: an air guide plate body, an inner surface of which is provided with a receiving groove; thermal insulation cotton, which is arranged in the receiving groove; a shielding flange, a first end of the shielding flange is connected to the outer surface of the groove wall of the receiving groove close to the large air guide plate, and the second end of the shielding flange is extended along a side away from the receiving groove, and when the small air guide plate is in the second closed position and the large air guide plate is in the first closed position, the first end of the large air guide plate is located on the outside of the shielding flange.

[0009] Furthermore, a limiting groove is formed between the shielding flange and the end of the air guide plate body, and when the small air guide plate is located at the second closed position and the large air guide plate is located at the first closed position, the first end of the large air guide plate is located in the limiting groove.

[0010] Furthermore, the surface of the shielding flange on the side of the upper edge facing the air outlet is smoothly transitioned to the outer surface of the thermal insulation cotton.

[0011] Further, when the small air guide plate is located at the second closed position and the large air guide plate is located at the first open position, the height difference between the second end of the shielding flange and the second end of the large air guide plate is h, wherein 20mm≤h≤50mm.

[0012] Further, an angle formed by a plane where the outer surface of the small air guide plate is located and a tangent line of the outer surface of the end portion of the first end of the large air guide plate is β1, wherein β1≤30°.

[0013] Furthermore, the second rotation center of the small air guide plate is located on the inner side of the small air guide plate, and the second rotation center of the small air guide plate is arranged close to the first end of the shielding flange, and the first rotation center of the large air guide plate is located on the outer side of the small air guide plate, and the first rotation center of the large air guide plate is arranged close to the first end of the large air guide plate.

[0014] Furthermore, the minimum distance between the second rotation center of the small air guide plate and the shielding flange is less than or equal to 5 mm, and / or the distance between the projection point of the second rotation center of the small air guide plate on the shielding flange to the second end of the shielding flange is less than or equal to 2 mm.

[0015] Furthermore, the large air guide plate includes an air guide plate body, and the profile of the air guide plate body includes: a first arc segment, the first end of the first arc segment is arranged close to the small air guide plate; a second arc segment, the first end of the second arc segment is connected to the second end of the first arc segment, and the second end of the second arc segment extends toward one side of the panel; wherein, the arc radius of the first arc segment is R1, wherein 88mm≤R1≤91mm, and / or, the arc radius of the second arc segment is R2, wherein 247mm≤R2≤250mm.

[0016] Further, the large air guide plate rotates from the first closed position to the first open position at an angle of β2, wherein 45°≤β2≤57°.

[0017] According to another aspect of the present invention, an air conditioner is provided, comprising an indoor unit, wherein the indoor unit is the indoor unit described above.

[0018] By applying the technical solution of the present invention, the large air guide plate has a first open position and a first closed position, and the small air guide plate has a second open position and a second closed position. The air outlet is closed by the large air guide plate being in the first closed position and the small air guide plate being in the second closed position. The end of the large air guide plate close to the small air guide plate is located on the outside of the small air guide plate. When the large air guide plate is in the first open position, an air outlet duct is formed between the inner surface of the large air guide plate and part of the outer surface of the panel. Not only can seamless cooperation between the large air guide plate and the small air guide plate be achieved, solving the problem of gaps between the two air guide plates in the prior art, but also cold air reflux can be controlled to prevent condensation on the small air guide plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1 A schematic structural diagram showing an embodiment of an indoor unit in a closed state according to the present invention is shown;

[0021] Figure 2 A schematic structural diagram of an embodiment of an indoor unit in a cooling state according to the present invention is shown;

[0022] Figure 3 A schematic structural diagram of a first embodiment of a small air guide plate according to the present invention is shown;

[0023] Figure 4 A schematic structural diagram of a second embodiment of a small air guide plate according to the present invention is shown;

[0024] Figure 5 A schematic structural diagram of an embodiment of a large air guide plate according to the present invention is shown.

[0025] The above drawings include the following reference numerals:

[0026] 10. Shell;

[0027] 20. Panel body;

[0028] 21. Air outlet;

[0029] 30. Panel;

[0030] 40. Large air guide plate; 41. First rotation center; 42. First arc segment; 43. Second arc segment; 44. Foam;

[0031] 50. Small air guide plate; 51. Air guide plate body; 52. Thermal insulation cotton; 53. Shielding flange; 54. Limiting groove; 55. Second rotation center; 56. Accommodating groove;

[0032] 60. Air outlet duct. DETAILED DESCRIPTION

[0033] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0034] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0035] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0036] Now, exemplary embodiments according to the present application will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in a variety of different forms and should not be construed as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present application thorough and complete, and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art. In the accompanying drawings, for the sake of clarity, the thickness of the layers and regions may be enlarged, and the same reference numerals are used to represent the same devices, and thus their descriptions will be omitted.

[0037] Combination Figures 1 to 5As shown, according to a specific embodiment of the present application, an indoor unit is provided.

[0038] Specifically, Figure 1 , Figure 2 As shown, the indoor unit includes: a housing 10, a panel body 20, a panel 30, a large air guide plate 40 and a small air guide plate 50, the housing 10 is connected to the panel body 20, the panel body 20 has an air outlet 21, the panel 30 is connected to the panel body 20, the large air guide plate 40 is connected to at least one of the housing 10, the panel body 20 and the panel 30, the large air guide plate 40 has a first open position and a first closed position, the small air guide plate 50 is connected to at least one of the housing 10, the panel body 20 and the panel 30, and the small air guide plate 50 is connected to The large air guide plate 40 is arranged adjacent to each other, and the small air guide plate 50 has a second open position and a second closed position. When the small air guide plate 50 is in the second closed position and the large air guide plate 40 is in the first closed position, the small air guide plate 50 and the large air guide plate 40 close the air outlet 21, and the end of the large air guide plate 40 close to the small air guide plate 50 is located on the outside of the small air guide plate 50. When the large air guide plate 40 is in the first open position, an air outlet duct 60 is formed between the inner surface of the large air guide plate 40 and a portion of the outer surface of the panel 30.

[0039] By applying the technical solution of this embodiment, the large air guide plate 40 has a first open position and a first closed position, and the small air guide plate 50 has a second open position and a second closed position. The air outlet is closed by positioning the large air guide plate 40 in the first closed position and the small air guide plate 50 in the second closed position. The end of the large air guide plate 40 close to the small air guide plate 50 is located on the outside of the small air guide plate 50. When the large air guide plate 40 is in the first open position, an air outlet duct 60 is formed between the inner surface of the large air guide plate 40 and a portion of the outer surface of the panel 30. This not only enables seamless cooperation between the large air guide plate 40 and the small air guide plate 50, solving the problem of gaps between the two air guide plates in the prior art, but also controls the backflow of cold air to prevent condensation on the small air guide plate 50.

[0040] When the large air guide plate 40 is located at the first closed position or the first open position, the small air guide plate 50 can be selectively located at the second closed position and the second open position. This arrangement can achieve a variety of air outlet modes.

[0041] When the small air guide plate 50 is located at the second open position, the small air guide plate 50 is located inside the large air guide plate 40. This arrangement enables a small portion of the airflow blown out from the air outlet 21 to be blocked when encountering the large air guide plate 40 and to flow back along the large air guide plate 40 to the side wall of the small air guide plate 50, so that the temperature difference between the two sides of the side wall of the small air guide plate 50 is not large, thereby effectively avoiding the generation of condensation water.

[0042] like Figure 1As shown, when the small air guide plate 50 is in the second closed position and the large air guide plate 40 is in the first closed position, the first end of the small air guide plate 50 is arranged adjacent to the first end of the large air guide plate 40, the second end of the small air guide plate 50 is arranged adjacent to the lower edge of the air outlet 21, the second end of the large air guide plate 40 is overlapped on the outer surface of the panel body 20, and the first end of the large air guide plate 40 is located outside the first end of the small air guide plate 50. In this way, when the small air guide plate 50 is in the second closed position and the large air guide plate 40 is in the first closed position, the small air guide plate 50 and the large air guide plate 40 can cover the entire air outlet 21, achieving a seamless effect between the large and small air guide plates.

[0043] like Figures 2 to 4 As shown, the small air guide plate 50 includes: an air guide plate body 51, heat insulation cotton 52, and a shielding flange 53. The inner surface of the air guide plate body 51 is provided with a receiving groove 56, and the heat insulation cotton 52 is arranged in the receiving groove 56. The first end of the shielding flange 53 is connected to the outer surface of the groove wall of the receiving groove 56 close to the side of the large air guide plate 40, and the second end of the shielding flange 53 is extended along the side away from the receiving groove 56. When the small air guide plate 50 is in the second closed position and the large air guide plate 40 is in the first closed position, the first end of the large air guide plate 40 is located outside the shielding flange 53. The heat insulation cotton 52 can be provided to insulate the small air guide plate 50, effectively preventing the problem of condensation when the small air guide plate 50 is in the second closed state during cooling. The shielding flange 53 can ensure that when the indoor unit is in the closed state, the small air guide plate 50 and the large air guide plate 40 are matched without black seams. In this embodiment, since smooth air flow needs to be ensured when the indoor unit is in cooling state, the thermal insulation cotton 52 cannot be pasted on the shielding flange 53. By arranging the thermal insulation cotton 52 in the receiving groove 56 of the air guide plate body 51, the small air guide plate 50 is insulated and interference between the shielding flange 53 and the thermal insulation cotton 52 is avoided, thereby ensuring smooth air flow.

[0044] like Figure 2 As shown, a limiting groove 54 is formed between the shielding flange 53 and the end of the air deflector body 51, and when the small air deflector 50 is in the second closed position and the large air deflector 40 is in the first closed position, the first end of the large air deflector 40 is located in the limiting groove 54. This arrangement further ensures a seamless effect between the small air deflector 50 and the large air deflector 40, and avoids interference between the shielding flange 53 and the large air deflector 40 when the small air deflector 50 is opened, thereby preventing the small air deflector 50 from colliding with the large air deflector 40 when the small air deflector 50 is opened.

[0045] like Figure 3 As shown, the surface of the shielding flange 53 facing the upper edge of the air outlet 21 is smoothly transitioned with the outer surface of the thermal insulation cotton 52. This arrangement further avoids interference between the shielding flange 53 and the thermal insulation cotton 52, thereby ensuring smooth air outlet.

[0046] like Figure 2 As shown, when the small air guide plate 50 is in the second closed position and the large air guide plate 40 is in the first open position, the height difference between the second end of the shielding flange 53 and the second end of the large air guide plate 40 is h, where 20mm≤h≤50mm. This arrangement further avoids interference between the shielding flange 53 and the large air guide plate 40, and improves the reliability between the small air guide plate 50 and the large air guide plate 40.

[0047] The angle formed by the plane where the outer surface of the small air guide plate 50 is located and the tangent line of the outer surface of the first end of the large air guide plate 40 is β1, where β1≤30°. This arrangement ensures that when the large air guide plate 40 is rotated to open, the tip of the large air guide plate 40 is always higher than the shielding flange 53 of the small air guide plate 50, so that most of the airflow blown out from the air outlet 21 is guided out from the top of the large air guide plate 40, and ensures that the large air guide plate 40 has a certain curvature to allow the airflow to rebound.

[0048] like Figure 1 As shown, the second rotation center 55 of the small air guide plate 50 is located inside the small air guide plate 50, and the second rotation center 55 of the small air guide plate 50 is arranged close to the first end of the shielding flange 53, and the first rotation center 41 of the large air guide plate 40 is located outside the small air guide plate 50, and the first rotation center 41 of the large air guide plate 40 is arranged close to the first end of the large air guide plate 40. This arrangement enables the large air guide plate 40 to rotate around the first rotation center 41 to open, and the small air guide plate 50 to rotate around the second rotation center 55 to open, and ensures that the return air blows to the shielding flange 53, further achieving the purpose of preventing condensation.

[0049] like Figure 1 As shown, the minimum distance between the second rotation center 55 of the small air guide plate 50 and the shielding flange 53 is less than or equal to 5 mm, or the distance between the projection point of the second rotation center 55 of the small air guide plate 50 on the shielding flange 53 and the second end of the shielding flange 53 is less than or equal to 2 mm. This arrangement avoids the collision of the small air guide plate 50 with the large air guide plate 40 when the small air guide plate 50 rotates to open, prevents the shielding flange 53 from interfering with the large air guide plate 40, and ensures a safe movement gap between the small air guide plate 50 and the large air guide plate 40.

[0050] like Figure 5As shown, the large air deflector 40 includes an air deflector body, and the profile of the air deflector body includes: a first arc segment 42 and a second arc segment 43, wherein the first end of the first arc segment 42 is arranged close to the small air deflector 50, the first end of the second arc segment 43 is connected to the second end of the first arc segment 42, and the second end of the second arc segment 43 is extended toward one side of the panel 30. The arc radius of the first arc segment 42 is R1, wherein 88 mm ≤ R1 ≤ 91 mm, and the arc radius of the second arc segment 43 is R2, wherein 247 mm ≤ R2 ≤ 250 mm. Preferably, the cross-sectional chord length of the large air deflector 40 is about 156-158 mm. This arrangement ensures the necessary length of the large air guide plate 40, and at the same time ensures that in the cooling state, the large air guide plate 40 has a certain curvature to enable the airflow to rebound, so that a small part of the airflow is blocked when encountering the large air guide plate 40 and flows back to the shielding flange 53 along the designed curvature trajectory of the large air guide plate 40, thereby controlling the cold air return problem and further solving the problem of condensation water generated by the shielding flange 53 of the small air guide plate 50.

[0051] The angle of rotation of the large air guide plate 40 from the first closed position to the first open position is β2, wherein 45°≤β2≤57°. This arrangement can effectively prevent condensation from forming on the small air guide plate 50 without affecting the air outlet and cooling effect of the air conditioner.

[0052] The indoor unit in the above embodiment can also be used in the technical field of air conditioner equipment. That is, according to another aspect of the present application, an air conditioner is provided, including an indoor unit, and the indoor unit is the indoor unit in the above embodiment.

[0053] According to another specific embodiment of the present application, foam 44 is pasted on the large air guide plate 40. Under heating conditions, the small air guide plate 50 rotates inward counterclockwise around the second rotation center 55 to open, and under cooling conditions, the large air guide plate 40 rotates clockwise around the first rotation center 41. The first rotation center 41 must be set at the lower left of the shielding flange 53. The large air guide plate 40 is opened at a certain angle. This angle needs to ensure that the tip of the large air guide plate is higher than the shielding flange 53 of the small air guide plate 50, so that most of the airflow blown out from the air outlet 21 is guided out from the top of the large air guide plate 40. At the same time, it is necessary to ensure that the large air guide plate 40 has a certain curvature to enable the airflow to rebound, so that a small part of the airflow is blocked when encountering the large air guide plate 40 and flows back to the shielding flange 53 along the designed arc trajectory of the large air guide plate 40, so that the temperature difference on both sides of the shielding flange 53 is not large, thereby effectively avoiding the generation of condensation water, and at the same time avoiding the sticker of thermal insulation cotton 52 on the shielding flange 53 to affect the appearance effect. Figure 2The figure is a schematic diagram of the structure of the air conditioner in the cooling state. In the present embodiment, the small air guide plate 50 remains stationary, and the large air guide plate 40 rotates clockwise along the first rotation center 41 by an angle β2, wherein 45°≤β2≤57°. This can effectively prevent condensation without affecting the air outlet and cooling effect of the air conditioner. When the large air guide plate 40 is opened around the first rotation center 41, the highest point on the right side of the large air guide plate 40 is still higher than the tip of the shielding flange 53 of the small air guide plate 50, and when the large air guide plate 40 is rotated to the maximum angle, the angle between the first arc segment 42 of the large air guide plate 40 and the plane where the small air guide plate 50 is located is not greater than 30°.

[0054] By adopting the technical solution of the present application, the small air guide plate 50 is rotated inwards, and a shielding flange 53 is provided on the small air guide plate 50, so as to achieve a seamless effect between the small air guide plate 50 and the large air guide plate 40, and solve the problem of gaps between the two air guide plates. Since there is no insulation cotton 52 pasted on the shielding flange 53 of the small air guide plate 50, condensation will occur during cooling. The present application controls the cold air reflux by controlling the rotation angle of the large air guide plate 40, controlling the position of the first rotation center 41 of the large air guide plate 40 to be at the lower edge of the small air guide plate 50, and controlling the necessary length of the large air guide plate, thereby solving the condensation problem at the shielding flange 53 of the small air guide plate 50.

[0055] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0056] In addition to the above, it should be noted that "one embodiment", "another embodiment", "embodiment", etc. mentioned in this specification refer to the specific features, structures or characteristics described in conjunction with the embodiment included in at least one embodiment generally described in this application. The same expression appearing in multiple places in the specification does not necessarily refer to the same embodiment. Further, when describing a specific feature, structure or characteristic in conjunction with any embodiment, it is claimed that the realization of such feature, structure or characteristic in conjunction with other embodiments also falls within the scope of the present invention.

[0057] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An indoor unit, characterized in that: include: Housing (10); A panel body (20), the housing (10) being connected to the panel body (20), and the panel body (20) having an air outlet (21); A panel (30), the panel (30) being connected to the panel body (20); a large air guide plate (40), the large air guide plate (40) being connected to at least one of the shell (10), the panel body (20) and the panel (30), the large air guide plate (40) having a first open position and a first closed position; a small air guide plate (50), the small air guide plate (50) being connected to at least one of the shell (10), the panel body (20) and the panel (30); the small air guide plate (50) being arranged adjacent to the large air guide plate (40); the small air guide plate (50) having a second open position and a second closed position; when the small air guide plate (50) is located at the second closed position and the large air guide plate (40) is located at the first closed position, the small air guide plate (50) and the large air guide plate (40) close the air outlet (21); and an end portion of the large air guide plate (40) close to one end of the small air guide plate (50) is located outside the small air guide plate (50); and when the large air guide plate (40) is located at the first open position, an air outlet duct (60) is formed between an inner surface of the large air guide plate (40) and a portion of an outer surface of the panel (30); When the small air guide plate (50) is located at the second open position, the small air guide plate (50) is located on the inner side of the large air guide plate (40); When the small air guide plate (50) is located at the second closed position and the large air guide plate (40) is located at the first closed position, the first end of the small air guide plate (50) is arranged adjacent to the first end of the large air guide plate (40), the second end of the small air guide plate (50) is arranged adjacent to the lower edge of the air outlet (21), the second end of the large air guide plate (40) is overlapped on the outer surface of the panel body (20), and the first end of the large air guide plate (40) is located outside the first end of the small air guide plate (50).

2. The indoor unit according to claim 1, characterized in that: When the large air guide plate (40) is located at the first closed position or the first open position, the small air guide plate (50) can be selectively located at the second closed position and the second open position.

3. The indoor unit according to claim 1, characterized in that: The small air guide plate (50) comprises: An air deflector body (51), wherein an inner surface of the air deflector body (51) is provided with a receiving groove (56); Thermal insulation cotton (52), the thermal insulation cotton (52) being arranged in the containing groove (56); a shielding flange (53), wherein a first end of the shielding flange (53) is connected to an outer surface of a groove wall of the accommodating groove (56) on a side close to the large air guide plate (40), and a second end of the shielding flange (53) is extended along a side away from the accommodating groove (56); when the small air guide plate (50) is located at the second closed position and the large air guide plate (40) is located at the first closed position, the first end of the large air guide plate (40) is located at the outer side of the shielding flange (53).

4. The indoor unit according to claim 3, characterized in that: A limiting groove (54) is formed between the shielding flange (53) and the end of the air guide plate body (51); when the small air guide plate (50) is located at the second closed position and the large air guide plate (40) is located at the first closed position, the first end of the large air guide plate (40) is located in the limiting groove (54).

5. The indoor unit according to claim 3, characterized in that: The surface of the shielding flange (53) on the side of the upper edge facing the air outlet (21) is smoothly transitioned to the outer surface of the thermal insulation cotton (52).

6. The indoor unit according to claim 3, characterized in that: When the small air guide plate (50) is located at the second closed position and the large air guide plate (40) is located at the first open position, the height difference between the second end of the shielding flange (53) and the second end of the large air guide plate (40) is h, where 20 mm ≤ h ≤ 50 mm.

7. The indoor unit according to claim 6, characterized in that: The angle formed by the plane where the outer surface of the small air guide plate (50) is located and the tangent line of the outer surface of the end portion of the first end of the large air guide plate (40) is β1, wherein β1≤30°.

8. The indoor unit according to claim 3, characterized in that: The second rotation center (55) of the small wind guide plate (50) is located on the inner side of the small wind guide plate (50), and the rotation center (55) of the small wind guide plate (50) is arranged close to the first end of the shielding flange (53); the first rotation center (41) of the large wind guide plate (40) is located on the outer side of the small wind guide plate (50), and the first rotation center (41) of the large wind guide plate (40) is arranged close to the first end of the large wind guide plate (40).

9. The indoor unit according to claim 8, characterized in that: The minimum distance between the second rotation center (55) of the small air guide plate (50) and the shielding flange (53) is less than or equal to 5 mm, and / or the distance between the projection point of the second rotation center (55) of the small air guide plate (50) on the shielding flange (53) and the second end of the shielding flange (53) is less than or equal to 2 mm.

10. The indoor unit according to claim 1, characterized in that: The large air deflector (40) comprises an air deflector body, and the profile of the air deflector body comprises: a first arc segment (42), wherein a first end of the first arc segment (42) is arranged close to the small air guide plate (50); a second arc segment (43), wherein a first end of the second arc segment (43) is connected to a second end of the first arc segment (42), and the second end of the second arc segment (43) is extended toward one side of the panel (30); The arc radius of the first arc segment (42) is R1, wherein 88 mm ≤ R1 ≤ 91 mm, and / or The arc radius of the second arc segment (43) is R2, wherein 247 mm ≤ R2 ≤ 250 mm.

11. The indoor unit according to claim 1, characterized in that: The large air guide plate (40) rotates from the first closed position to the first open position at an angle β2, wherein 45°≤β2≤57°.

12. An air conditioner, comprising an indoor unit, characterized in that: The indoor unit is the indoor unit according to any one of claims 1 to 11.

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