Indoor unit

Abstract

The present disclosure provides an indoor unit capable of suppressing the occurrence of dew condensation on a downstream side of an air outlet passage.SOLUTION: An indoor unit 1 includes a housing 10, a blower 13 having a rotating shaft in a substantially horizontal direction inside the housing 10, and a blowout air passage 30 which is composed of a stabilizer 40 and a rear guider 31 facing the stabilizer 40 and through which air generated by the blower 13 passes. The stabilizer 40 includes a tongue portion 41 protruding toward the blower 13, a flat blowout portion 42 formed continuously with the downstream side of the tongue portion 41 and formed flat, a curved surface portion 43 formed continuously with the downstream side of the flat blowout portion 42 and recessed upward, and a recessed portion 48 formed continuously with a curved surface edge 47 on the downstream side of the curved surface portion 43 and recessed upward. A tangent P2 in contact with the curved surface portion 43 at the curved surface edge 47 is inclined downward with respect to the blowout flat portion 42.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present disclosure relates to an indoor unit. [Background technology]

[0002] Patent Document 1 discloses an indoor unit having a first surface disposed in front of the air outlet and extending diagonally upward at the lower end of the front panel, a second surface disposed above the first surface and formed so that it becomes higher as it goes rearward, a separation section that separates the airflow blown out from the air outlet from the first surface, a separation section that separates the indoor air flowing downward along the second surface from the second surface, and a connection section that connects these separation sections. Patent Document 1 states that during cooling operation, the cool air blown out from the air outlet and the warm indoor air mix after separating from the first surface and the second surface, respectively, thereby suppressing the occurrence of condensation on the structure of the indoor unit. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2017-072294 Summary of the Invention [Problem to be solved by the invention]

[0004] The present disclosure provides an indoor unit that can suppress the occurrence of condensation on the downstream side of the outlet air duct. [Means for solving the problem]

[0005] The indoor unit of the present disclosure is an indoor unit having a housing, a blower having a rotation axis in an approximately horizontal direction inside the housing, and an outlet air duct composed of a stabilizer and a rear guider facing the stabilizer, through which air generated by the blower passes, the stabilizer having a tongue portion protruding toward the blower, a flat outlet portion formed continuously with the downstream side of the tongue, a curved portion formed continuously with the downstream side of the flat outlet portion and concave upward, and a recess formed continuously with the curved edge on the downstream side of the curved portion and concave upward, and a tangent line contacting the curved portion at the curved edge is inclined downwardly relative to the flat outlet portion. [Effects of the Invention]

[0006] The indoor unit according to the present disclosure can guide the airflow generated by the fan in a tangential direction at the curved edge, thereby preventing the airflow from mixing with the indoor air flowing into the recess, thereby preventing condensation from forming downstream in the airflow path of the indoor unit. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a perspective view of an indoor unit of an air conditioner according to a first embodiment. [Figure 2] Schematic perspective view of an indoor unit according to the first embodiment. [Figure 3] FIG. 1 is an enlarged cross-sectional view of a stabilizer according to a first embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0008] (Findings that formed the basis of this disclosure) At the time the inventors conceived the present disclosure, there was a technology, such as that described in Patent Document 1, that aimed to separate and then mix the cool air blown out of the air outlet and the warm air in the room during cooling operation in an indoor unit having a second surface at the lower end of the front panel that curves upward toward the rear and a first surface that forms an air outlet and extends diagonally upward. However, with this configuration, there was a risk that the air blown out of the air outlet would not separate from the first surface but would flow upward toward the junction between the first and second surfaces, generating a vortex that swirls in the opposite direction to the air outlet direction. This vortex could entrain indoor air flowing downward along the second surface and cause it to mix near the junction between the first and second surfaces. The surface of the junction was cooled by the air blown out of the air outlet or by heat conduction from the first surface, which could result in condensation near the junction. In this way, the inventors discovered a problem in that conventional technology is unable to prevent the mixing of the wind generated by the blower with the air in the room that flows in against that wind, and in order to solve this problem, they came up with the subject matter of the present disclosure. Therefore, the present disclosure provides an indoor unit that can suppress the occurrence of condensation on the downstream side of the airflow path of the indoor unit.

[0009] Hereinafter, embodiments will be described in detail with reference to the drawings. However, in some cases, more detailed explanation than necessary may be omitted. For example, detailed explanation of already well-known matters or redundant explanation of substantially the same configuration may be omitted. The accompanying drawings and the following description are provided to enable those skilled in the art to fully understand the present disclosure, and are not intended to limit the subject matter described in the claims.

[0010] (Embodiment 1) [1-1.Configuration] [1-1-1. Indoor unit configuration] Fig. 1 is a perspective view of an indoor unit 1 of an air conditioner according to embodiment 1, showing the indoor unit 1 as seen from the front. Fig. 2 is a cross-sectional view of the indoor unit 1. Fig. 2 is a schematic diagram showing a cross section of the indoor unit 1 in the ZY direction.

[0011] In the drawings, the symbol X indicates the right direction of the indoor unit 1, the symbol Y indicates the front direction of the indoor unit 1, and the symbol Z indicates the upward direction of the indoor unit 1. In the following explanation, directions such as up / down, left / right, front / back refer to directions relative to the indoor unit 1 unless otherwise specified.

[0012] The indoor unit 1 is a so-called wall-mounted indoor unit that is attached to a room wall W. The indoor unit 1 has a box-shaped housing 10 that is long in the left-right direction.

[0013] The housing 10 includes a decorative cover 20. The decorative cover 20 is a resin member that covers the indoor heat exchanger 11 and the blower 13 from the left, right, top, bottom, and front. The rear side of the decorative cover 20, i.e., the back side, is open. In detail, the decorative cover 20 includes a front panel 22 that forms the front surface of the housing 10, a breathable top panel 24 that forms the top surface of the housing 10, a pair of side panels 26 that form the left and right side surfaces of the housing 10, and a bottom rail 28 that forms the bottom surface of the housing 10. Each of the members 22, 24, 26, and 28 that form the decorative cover 20 can be attached and detached individually. The front surface can also be referred to as the front face.

[0014] 2, the housing 10 houses therein an indoor heat exchanger 11, a blower 13, etc. The blower 13 is a so-called cross-flow fan having a rotation axis in a substantially horizontal direction, that is, in the left-right direction.

[0015] An air outlet 21, which is an opening of an air outlet passage 30 that connects the inside and outside of the decorative cover 20, is formed on the front side of the decorative cover 20. The air outlet 21 is formed over substantially the entire decorative cover 20 in the left-right direction.

[0016] The indoor unit 1 draws in indoor air through a ventilated opening in the top panel 24. The drawn-in indoor air passes through a filter 29 provided to cover the indoor heat exchanger 11. The indoor unit 1 further conditions the room by blowing the air that has exchanged heat with the refrigerant in the indoor heat exchanger 11 out of the air outlet 21 into the room.

[0017] Air outlet airflow path 30 guides the airflow generated by blower 13 toward air outlet 21. Hereinafter, the airflow generated by blower 13 may be simply referred to as "airflow." The blowout air passage 30 is made up of a stabilizer 40 that forms one surface, and a rear guider 31 that is disposed opposite the stabilizer 40 and forms the other surface.

[0018] The indoor unit 1 is formed in a substantially flat plate shape and includes a first louver 32 and a second louver 33 having a rotation axis in a substantially horizontal direction. The rear guider 31 is formed to extend in an arc shape downward from behind the blower 13. A first louver 32 is rotatably provided at the edge of the rear guider 31. The first louver 32 can be closed to cover the air outlet 21. The direction of the airflow is guided and changed according to the angle of the first louver 32.

[0019] A second louver 33 is provided in the vertical center of air outlet 21, and is disposed closer to stabilizer 40 than first louver 32. Second louver 33 guides the air that has flowed into the center of air outlet air passage 30. Second louver 33 will be described in detail later.

[0020] [1-1-2. Stabilizer configuration] 3 is an enlarged cross-sectional view of the stabilizer 40. The stabilizer 40 will be described in detail with reference to FIG. The stabilizer 40 includes a tongue 41 formed to protrude toward the blower 13 . The tongue portion 41 is disposed below and in front of the blower 13, and guides the air blown from the blower 13 to the stabilizer 40. The tip of the tongue portion 41 is formed in a curved shape.

[0021] A flat blowing flat portion 42 is formed, connecting to the tongue portion 41 and extending downstream. A curved surface portion 43 is formed tangentially connected to the blowing flat portion 42 and recessed above the blowing flat surface P1 including the blowing flat portion 42.

[0022] The curved surface portion 43 has a first curved surface portion 44 that is tangent to the flat blowing portion 42 and a second curved surface portion 45 that is tangent to the first curved surface portion 44 at a tangent point 46 .

[0023] The first curved surface portion 44 is a curved surface formed in an arc shape, and the second curved surface portion 45 is a curved surface formed in an arc shape. The curvatures of the first curved surface portion 44 and the second curved surface portion 45 can each be changed as appropriate.

[0024] The curved surface portion 43 is formed such that a curved surface edge 47 constituting the downstream edge of the curved surface portion 43 is located below the flat blowing surface P1. The curved surface edge 47 can also be said to be the downstream edge of the second curved surface portion 45.

[0025] An upwardly recessed recess 48 is formed connected to the curved edge 47. Specifically, the recess 48 is formed to be recessed upward relative to an imaginary plane P3 that connects the curved edge 47 and the downstream-most edge 53.

[0026] A first recess connection surface portion 49 of the recess 48, which extends upward from the curved edge 47, is formed flat.

[0027] The first recess connection surface portion 49 is formed to rise upward at a rising angle C1 from a tangent line P2 of the second curved surface portion 45 at the curved surface edge 47. The rising angle C1 is 90° or more.

[0028] A recessed surface portion 50 extending in the front-rear direction is formed and connected to the first recessed connection surface portion 49. Note that the recessed surface portion 50 does not have to be flat, and may be formed in a curved shape.

[0029] The recessed surface portion 50 is located above an imaginary plane P3 that connects the curved surface edge 47 and a most downstream end edge 53 that constitutes the most downstream edge of the stabilizer 40.

[0030] A hanging portion 51 is formed connected to the downstream edge of the recessed surface portion 50 and extending downward and forward.

[0031] A second recess connection surface portion 52 is formed connected to the lower edge of hanging portion 51 and extending downward and forward toward the lower end of front panel 22 of housing 10. Second recess connection surface portion 52 is formed flat. In this embodiment, the lower end of front panel 22 corresponds to downstream-most edge 53.

[0032] An angle C2 formed between an imaginary plane P5 including the second recess connection surface portion 52 and an imaginary plane P4 including the front panel 22 is 90° or less. Angle C2 corresponds to the angle at the rear and above the housing 10 among the angles formed by the four imaginary planes P5 and P4. If the front panel 22 is not flat but is curved, the angle formed between the tangent to the downstream-most edge 53 of the front panel 22 and the second recess connecting surface 52 corresponds to the angle C2.

[0033] As described above, stabilizer 40 that constitutes one surface of outlet airflow passage 30 includes, from upstream to downstream, tongue portion 41, outlet flat portion 42, curved surface portion 43, and recessed portion 48 in this order.

[0034] [1-1-3. Configuration of the second louver] The second louvers 33 are so-called horizontal louvers, and have the function of deflecting the wind generated by the blower 13 with a downward vector into an upward vector, in order to realize a ceiling airflow, particularly during cooling operation. Second louver 33 includes a lower first blade portion 33A and an upper second blade portion 33B. First blade portion 33A and second blade portion 33B are connected by a plurality of plate members (not shown) and swing together. Second louver 33 is composed of two blade portions, but may also be composed of a single blade portion.

[0035] The second louver 33 is disposed so that the upper end thereof is located below the flat air outlet surface P1 even when the second louver 33 is swinging. The downstream end of second louver 33 is positioned so as to be located upstream of vertical plane P6 that passes through curved edge 47 and is perpendicular to flat air outlet surface P1, even when second louver 33 is swinging. Second louver portion 33B is formed longer than first blade portion 33A, and the downstream end of second louver 33 corresponds to the downstream end of first blade portion 33A.

[0036] [1-2. Operation] For example, if the indoor unit 1 is in cooling operation, the air generated by the blower 13 has a lower temperature than the air inside the room. The indoor air flows toward the outlet airflow duct 30, driven mainly by the temperature difference and pressure difference between the indoor air and the airflow. At this time, the indoor air flows in from a direction different from the air flowing out of the outlet airflow duct 30, via the periphery of the most downstream edge 53. Of the air flowing out of the outlet airflow duct 30, the air flowing particularly on the stabilizer 40 side may not flow in the direction controlled by the side of the stabilizer 40 closer to the blower 13.

[0037] In particular, the wind flowing from curved edge 47 may flow into the vicinity of most downstream edge 53 due to the influence of the air flow in the room. When most downstream edge 53 and the components in its vicinity are cooled by the wind, condensation occurs due to the temperature difference with the air in the room.

[0038] In the present embodiment, angle C2, which is the angle between imaginary plane P5 including second recess connection surface portion 52 and imaginary plane P4 including front panel 22, is set to 90° or less, and therefore indoor air can be prevented from being guided and flowing into outlet airflow passage 30, particularly toward recess 48. This is because indoor air that has flowed along the surface of front panel 22 must bend by 90° or more when it turns from most downstream edge 53 toward recess 48.

[0039] The wind generated by the blower 13 that flows toward the stabilizer 40 will be described. First, the wind flows along the flatly formed blowing flat portion 42. Next, the wind flows along the first curved surface portion 44 that is tangentially connected to the blowing flat portion 42. Due to this tangency, the wind is easily guided along the first curved surface portion 44.

[0040] Next, the wind flows along the second curved surface portion 45 that is tangentially connected to the first curved surface portion 44. The wind is easily guided to the second curved surface portion 45 due to the tangency.

[0041] The airflow that flows along the second curved surface portion 45 is energized in the direction of tangent line P2 at the curved surface edge 47, and flows away from the second curved surface portion 45. Because the rising angle C1 is formed to be 90° or greater, the airflow is less likely to be guided toward the recessed portion 48. Furthermore, because the curved surface edge 47 is positioned below the flat airflow surface P1 including the flat airflow portion 42, the direction of tangent line P2 faces further downward, making it less likely for the airflow to mix with the airflow in the room. Furthermore, because the tangent line P2 is inclined downward with respect to the flat airflow surface P1, the vector of the airflow guided to the flat airflow portion 42 can be directed away from the recessed portion 48. Next, the wind flowing out from the second curved surface portion 45 heads toward the room.

[0042] As explained above, even if indoor air flows in, it does not tend to accumulate in the recess 48 or mix with the wind flowing out of the indoor unit 1, so the downstream edge 53 and the components in its vicinity are not cooled by the wind, and condensation due to the temperature difference with the indoor air is unlikely to occur.

[0043] [1-3. Effects, etc.] As described above, the indoor unit 1 is an indoor unit 1 including a housing 10, includes a blower 13 having a rotation axis extending substantially horizontally inside the housing 10, and includes an outlet airflow path 30 that is configured with a stabilizer 40 and a rear guider 31 facing the stabilizer 40 and that passes air generated by the blower 13. The stabilizer 40 includes a tongue 41 that protrudes toward the blower 13, a flat outlet portion 42 that is formed continuous with the downstream side of the tongue 41, a curved surface portion 43 that is formed continuous with the downstream side of the flat outlet portion 42 and is recessed upward, and a recess 48 that is formed continuous with a curved edge 47 on the downstream side of the curved surface portion 43 and is recessed upward. A tangent line P2 that contacts the curved surface portion 43 at the curved edge 47 is inclined downward relative to the flat outlet portion 42.

[0044] With this configuration, tangent line P2 is inclined downward relative to flat outlet surface P1, so the vector of the airflow guided to flat outlet portion 42 can be directed in a direction away from recess 48. Therefore, the airflow generated by blower 13 can be guided in the direction of tangent line P2 at curved surface edge 47, which can prevent the airflow from mixing with the indoor air flowing into recess 48. This can prevent condensation from forming downstream of outlet airflow path 30 of indoor unit 1.

[0045] Furthermore, the recess 48 may be formed above an imaginary plane P3 connecting the curved edge 47 and the most downstream edge 53 located on the most downstream side of the stabilizer 40.

[0046] With this configuration, indoor air that is attracted by the wind that has separated from curved edge 47 and flowed through the vicinity of downstream edge 53 tends to stagnate in recess 48. This makes it possible to suppress mixing of the wind with the indoor air that flows into recess 48, and to suppress condensation on the downstream side of outlet airflow duct 30 of indoor unit 1.

[0047] Furthermore, the curved surface portion 43 may include a first curved surface portion 44 that is tangent to the flat blowing portion 42 and a second curved surface portion 45 that is tangent to the first curved surface portion 44.

[0048] According to this configuration, the air guided to the flat outlet portion 42 is easily guided to the first curved surface portion 44 because the flat outlet portion 42 and the first curved surface portion 44 are tangent to each other. Furthermore, the air guided to the first curved surface portion 44 is easily guided to the second curved surface portion 45 because the first curved surface portion 44 and the second curved surface portion 45 are tangent to each other. As a result, the air guided to the flat outlet portion 42 is guided to the curved surface edge 47. Therefore, because the air can be guided in the direction of the tangent line P2 at the curved surface edge 47, mixing of the air with the indoor air flowing into the recess 48 can be suppressed. This makes it possible to suppress condensation on the downstream side of the airflow duct 30 of the indoor unit 1.

[0049] Furthermore, the curved edge 47 may be located below the flat blowing surface P1 including the flat blowing portion .

[0050] According to this configuration, the direction of the tangent line P2 faces further downward, so that the air that separates from the curved end edge 47 and flows is less likely to mix with the air flow in the room.

[0051] Furthermore, a flat first recess connection surface portion 49 that is connected to the curved edge 47 and extends toward the recess 48 is formed facing upward at an angle of 90° or more from the tangent line P2.

[0052] According to this configuration, the wind is less likely to be guided from the curved edge 47 to the first recess connection surface 49, and therefore the wind is less likely to flow into the recess 48. This makes it possible to suppress mixing of the wind with the indoor air flowing into the recess 48. This makes it possible to suppress condensation on the downstream side of the blow-out airflow path 30 of the indoor unit 1.

[0053] In addition, the angle formed between the flat second recess connection surface 52, which is connected to the most downstream edge 53 and extends toward the recess 48, and the front panel 22 of the housing 10 is 90° or less. The front panel 22 corresponds to an example of the front surface.

[0054] According to this configuration, it is difficult for the wind to be guided from the most downstream edge 53 to the second recess connection surface portion 52, and therefore it is difficult for the indoor air to flow into the recess 48. This makes it possible to suppress mixing of the wind with the indoor air flowing into the recess 48. This makes it possible to suppress the occurrence of condensation on the downstream side of the blow-out airflow path 30 of the indoor unit 1.

[0055] The indoor unit 1 also includes a first louver 32 and a second louver 33. The second louver 33, which is closer to the stabilizer 40, is disposed below the flat air outlet surface P1 including the flat air outlet portion 42, and is disposed upstream of a vertical plane P6 that is perpendicular to the flat air outlet surface P1 and passes through the curved surface edge 47.

[0056] If the upper end of the second louver 33 were positioned above the flat air outlet surface P1, the gap between the second louver 33 and the stabilizer 40 would become smaller, increasing the flow velocity in the gap. This would cause the air to become turbulent. Furthermore, if the downstream end of the second louver 33 were positioned so that it protruded downstream from the imaginary plane P6, the distance between the curved surface portion 43 and the second louver 33 would tend to become closer, and the gap would tend to become smaller. According to the configuration of this embodiment, the above-mentioned turbulence in the airflow is unlikely to occur, and the second louvers 33 can change the airflow direction with greater precision.

[0057] (Other embodiments) As described above, the above-mentioned first embodiment has been described as an example disclosed in the present application. However, the technology in the present disclosure is not limited to this, and can be applied to embodiments in which modifications, substitutions, additions, omissions, etc. are made. Furthermore, it is also possible to combine the components described in the above-mentioned first embodiment to create new embodiments. Therefore, other embodiments will be exemplified below.

[0058] In the first embodiment, the recess 48 has a flat recess surface 50, but this is not limiting. The shape of the recess 48 can be appropriately changed within the range where the first recess connection surface 49 is formed so that the rise angle C1 is 90° or more, and the second recess connection surface 52 is formed so that the angle C2 is 90° or less.

[0059] It should be noted that the above-described embodiments are intended to illustrate the technology of the present disclosure, and various modifications, substitutions, additions, omissions, etc. may be made within the scope of the claims or their equivalents.

[0060] 2. Configurations supported by the above embodiments The above embodiment supports the following configurations.

[0061] (Addendum) (Technology 1) An indoor unit having a housing, the indoor unit including a blower having a rotation axis in a substantially horizontal direction inside the housing, and an outlet air passage for passing air generated by the blower, the outlet air passage being constituted by a stabilizer and a rear guider facing the stabilizer, the stabilizer including a tongue portion protruding toward the blower, a flat outlet flat portion formed continuously with the downstream side of the tongue portion, a curved surface portion formed continuously with the downstream side of the flat outlet flat portion and recessed upward, and a recessed portion formed continuously with the curved edge on the downstream side of the curved surface portion and recessed upward, and a tangent line contacting the curved surface portion at the curved edge is inclined downward relative to the flat outlet flat portion. This allows the tangent line to be inclined downward relative to the surface including the flat air outlet portion, so the vector of the air guided to the flat air outlet portion can be directed away from the recess. Therefore, the air generated by the fan can be guided in the tangential direction at the curved edge, which reduces mixing of the air with the indoor air flowing into the recess. This reduces condensation downstream of the indoor unit's airflow path.

[0062] (Technology 2) The indoor unit according to Technology 1, wherein the recess is formed above an imaginary plane connecting the curved edge and the most downstream edge located on the most downstream side of the stabilizer. This allows the indoor air that is attracted by the wind that has separated from the curved edge and flowed through the vicinity of the downstream edge to easily stagnate in the recess, thereby suppressing mixing of the wind with the indoor air that flows into the recess and suppressing condensation on the downstream side of the indoor unit's outlet airflow path.

[0063] (Technology 3) The indoor unit according to Technology 1 or 2, wherein the curved surface portion comprises a first curved surface portion tangent to the flat blowing portion, and a second curved surface portion tangent to the first curved surface portion. According to this, the air guided to the flat outlet portion is easily guided to the first curved surface portion because the flat outlet portion and the first curved surface portion are tangent to each other. Furthermore, the air guided to the first curved surface portion is easily guided to the second curved surface portion because the first curved surface portion and the second curved surface portion are tangent to each other. As a result, the air guided to the flat outlet portion is guided to the curved surface edge. Therefore, because the air can be guided in the tangential direction at the curved surface edge, mixing of the air with the indoor air flowing into the recess can be suppressed. This suppresses condensation on the downstream side of the indoor unit's airflow duct.

[0064] (Technical Aspect 4) The indoor unit according to any one of Technical Aspects 1 to 3, wherein the curved edge is positioned below a flat air-outlet surface including the flat air-outlet portion. With this, the tangential direction is directed downward, so that the air that separates from the curved edge and flows is less likely to mix with the air flow in the room.

[0065] (Technology 5) An indoor unit according to any one of Technologies 1 to 4, wherein a flat first recess connection surface portion that is connected to the curved edge and extends toward the recess is formed facing upward at an angle of 90° or more from the tangent line. This makes it difficult for wind to be guided from the curved edge to the first recess connection surface, making it difficult for wind to flow into the recess. This reduces mixing of the wind with the indoor air flowing into the recess. This reduces condensation on the downstream side of the indoor unit's outlet airflow path.

[0066] (Technology 6) The indoor unit according to any one of Technologies 2 to 5, wherein the angle formed between a flat second recess connection surface portion connected to the most downstream end edge and extending toward the recess and the front surface of the housing is 90° or less. This makes it difficult for air to be guided from the most downstream edge to the second recess connection surface, making it difficult for indoor air to flow into the recess. This reduces mixing of the air with the indoor air flowing into the recess. This reduces condensation on the downstream side of the indoor unit's outlet airflow path.

[0067] (Technology 7) An indoor unit according to any one of Technologies 1 to 3, comprising at least one louver, the louver closer to the stabilizer being positioned below a flat discharge surface including the flat discharge portion, and being positioned upstream of a second imaginary plane that is perpendicular to the flat discharge surface and passes through the curved surface edge. This prevents the gap between the louver and the curved edge from becoming too small, making it difficult for the wind to become turbulent, and the louver can change the wind direction with greater precision. [Industrial Applicability]

[0068] The present disclosure is applicable to air conditioners, specifically to home or commercial air conditioners that include a wall-mounted indoor unit. [Explanation of symbols]

[0069] 1 Indoor unit 10. Cabinet 11 Indoor heat exchanger 13 Blower 20 Makeup Cover 21 Air outlet 22 Front Panel 24 Top panel 26 Side Panel 28 Lower rail 29 Filters 30 Air outlet 31 Rear Guider 32 First louver 33 Second louver 40 Stabilizer 41 Tongue 42 Blowing flat part 43 Curved surface part 44 1st curved surface part 45 Second curved surface part 46 contact points 47 Curved edge 48 recess 49 First recessed connection surface 50 concave surface 51 Drooping part 52 second recessed connection surface 53 Downstream edge C1 Rise angle C2 angle P1 Blowing flat surface P2 tangent P3 Virtual Plane P4 Virtual Plane P5 Virtual Plane P6 Vertical plane W wall

Claims

1. An indoor unit having a housing, a blower having a rotation axis in a substantially horizontal direction within the housing, and an outlet air passage configured by a stabilizer and a rear guider facing the stabilizer, through which air generated by the blower passes; The stabilizer is The fan comprises a tongue portion protruding toward the blower, a flat blowing portion formed continuously downstream of the tongue portion, a curved surface portion formed continuously downstream of the flat blowing portion and recessed upward, and a recessed portion formed continuously at the curved edge of the curved surface portion on the downstream side and recessed upward, A tangent line contacting the curved surface portion at the curved surface edge is inclined downward relative to the flat blowing portion. Indoor unit.

2. the recess is formed above an imaginary plane connecting the curved surface edge and a downstream edge located at the downstream end of the stabilizer. The indoor unit according to claim 1.

3. The curved surface portion is a first curved surface portion tangent to the flat blowing portion, and a second curved surface portion tangent to the first curved surface portion, The indoor unit according to claim 2.

4. The curved edge is Located below the flat blowing surface including the flat blowing portion, The indoor unit according to any one of claims 1 to 3.

5. The first recess connection surface portion is a flat surface portion that is connected to the curved surface edge and extends toward the recess, The angle is 90° or more from the tangent line. The indoor unit according to any one of claims 1 to 3.

6. The angle formed by the flat second recess connection surface portion connected to the most downstream end edge and extending toward the recess and the front surface of the housing is: It is formed so that the angle is 90° or less. The indoor unit according to claim 2 or 3.

7. at least one louver; The louver on the side closer to the stabilizer is The flat air outlet is disposed below a flat air outlet surface including the flat air outlet portion, and is disposed upstream of a second imaginary plane that is perpendicular to the flat air outlet surface and passes through the curved surface edge. The indoor unit according to any one of claims 1 to 3.

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