indoor unit
By designing a stabilizer and a rear air guide in the indoor unit to form an air outlet duct, and using an inclined tangential structure to prevent air from mixing with indoor air, the problem of condensation on the downstream side of the indoor unit's air outlet duct is solved, achieving an effective anti-condensation effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO LTD
- Filing Date
- 2025-08-01
- Publication Date
- 2026-08-04
AI Technical Summary
In existing technologies, condensation is prone to occur on the downstream side of the air outlet duct of the indoor unit, mainly due to the temperature difference causing condensation as the air generated by the blower mixes with the indoor air.
An indoor unit was designed, the internal structure of which includes an air duct consisting of a stabilizer and a rear air guide. The stabilizer has a tongue, a flat air outlet, a curved surface, and a recess. The tangent of the curved surface end edge is inclined to the flat air outlet to prevent the air from mixing with the indoor air.
It effectively suppresses the mixing of wind and indoor air, avoiding condensation on the downstream side of the air duct of the indoor unit.
Smart Images
Figure CN224593362U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to an indoor unit. Background Technology
[0002] Patent Document 1 discloses an indoor unit that has the following features on the lower end of its front panel: a first surface positioned in front of the air outlet and extending obliquely upwards; a second surface positioned above the first surface and extending upwards towards the rear; a separation section separating the airflow from the air outlet from the first surface; a separation section separating indoor air flowing downwards along the second surface from the second surface; and a connecting section connecting these separation sections. In Patent Document 1, during cooling operation, the cold air blown from the air outlet and the warm air from the indoor unit are separated from the first and second surfaces respectively and then mixed, thereby suppressing condensation on the structural components of the indoor unit.
[0003] Existing technical documents
[0004] Patent documents
[0005] Patent Document 1: Japanese Patent Application Publication No. 2017-072294 Utility Model Content
[0006] The problem to be solved by utility models
[0007] The purpose of this invention is to provide an indoor unit that can suppress condensation on the downstream side of the air outlet duct.
[0008] Methods for solving problems
[0009] The indoor unit of this utility model includes a housing, inside which is a blower having a rotating shaft in a generally horizontal direction, and an air outlet duct formed by a stabilizer and a rear guide opposite to the stabilizer for the air generated by the blower to pass through. The stabilizer includes: a tongue protruding toward the blower side; a flat air outlet portion formed and connected to the downstream side of the tongue; a curved surface portion formed and recessed upwards connected to the downstream side of the flat air outlet portion; and a recessed portion formed and recessed upwards connected to the curved end edge of the downstream side of the curved surface portion, wherein the tangent line between the curved end edge and the curved surface portion is inclined downwards than that of the flat air outlet portion.
[0010] In the above structure, the recess can also be formed above the imaginary plane connecting the downstream edge of the stabilizer and the curved edge.
[0011] In the above structure, the curved surface may also have a first curved surface tangent to the blown-out flat portion and a second curved surface tangent to the first curved surface.
[0012] In the above structure, the curved end edge can also be located below the blow-out flat surface that includes the blow-out flat portion.
[0013] In the above structure, the flat first recessed connecting face, which connects to the curved end edge and extends into the recess, can also be formed upward at an angle of 90° or more from the tangent.
[0014] In the above structure, the angle between the flat second recess connecting face, which is connected to the downstream edge and extends toward the recess, and the front face of the housing can also be less than 90°.
[0015] In the above structure, there may also be at least one air guide plate. The air guide plate near the stabilizer side is positioned below the blowing flat surface containing the blowing flat portion, and is positioned upstream of the second imaginary plane that is perpendicular to the blowing flat surface and passes through the curved end edge.
[0016] Effects of the utility model
[0017] The indoor unit of this invention can guide the air generated by the blower along the tangential direction at the curved edge, thus suppressing the mixing of the air with the indoor air flowing into the recess. This, in turn, suppresses condensation on the downstream side of the air outlet duct of the indoor unit. Attached Figure Description
[0018] Figure 1 This is a perspective view of the indoor unit of the air conditioner in Implementation Method 1.
[0019] Figure 2 This is a three-dimensional schematic diagram of the indoor unit in Implementation Method 1.
[0020] Figure 3 This is an enlarged cross-sectional view of the stabilizer in Implementation Method 1. Detailed Implementation
[0021] (Knowledge, etc., that forms the basis of this utility model)
[0022] In conceiving the present invention, the indoor unit shown in Patent Document 1 has a second surface that curves upwards towards the rear at the lower end of the front panel, and a first surface that extends obliquely upwards to form an air outlet. In this indoor unit, the following technology exists: during cooling operation, the cold air blown from the air outlet and the warm air from the room are separated and then mixed. However, in this structure, the air blown from the air outlet generates a vortex that does not separate from the first surface but flows upwards towards the connection between the first and second surfaces and vortices in the opposite direction to the blowing direction. This vortex entrains the room air flowing downwards along the second surface, potentially causing mixing near the connection between the first and second surfaces. The surface of the connection is cooled by the air blown from the air outlet or by heat conduction from the first surface, potentially causing condensation near the connection.
[0023] Thus, in the existing technology, the inventors discovered that it is impossible to suppress the mixing of the air generated by the blower with the indoor air flowing into the blower. In order to solve this technical problem, the present invention was developed.
[0024] Therefore, this invention provides an indoor unit that can suppress condensation on the downstream side of the air outlet duct of the indoor unit.
[0025] The embodiments will now be described in detail with reference to the accompanying drawings. However, sometimes unnecessary detailed descriptions will be omitted. For example, detailed descriptions of known matters or repeated descriptions of practically identical structures may be omitted.
[0026] Furthermore, the accompanying drawings and the following description are provided to enable those skilled in the art to fully understand the present invention, and are not intended to limit the scope of the present invention.
[0027] (Implementation Method 1)
[0028] (1-1. Structure)
[0029] (1-1-1. Structure of the indoor unit)
[0030] Figure 1 This is a perspective view of the indoor unit 1 of the air conditioner according to Embodiment 1. It shows the indoor unit 1 as viewed from the front. Figure 2 This is a cross-sectional view of indoor unit 1. Figure 2 This is a schematic diagram showing the cross-section of indoor unit 1 in the ZY direction.
[0031] Additionally, in the diagram, symbol X indicates the right side of indoor unit 1, symbol Y indicates the front of indoor unit 1, and symbol Z indicates the top of indoor unit 1. Furthermore, in the following descriptions, unless otherwise specified, the up / down, left / right, and front / back directions refer to directions relative to indoor unit 1.
[0032] Indoor unit 1 is a so-called wall-mounted indoor unit that is installed on the wall W of an indoor space. Indoor unit 1 has a box-shaped housing 10 that is longer in the left-right direction.
[0033] The housing 10 includes a decorative cover 20. The decorative cover 20 is a resin component that covers the indoor heat exchanger 11 and the blower 13 from the left, right, top, bottom, and front. Additionally, the decorative cover 20 has an opening on its rear side, i.e., its back side. Specifically, the decorative cover 20 has: a front panel 22 forming the front of the housing 10; a ventilated top panel 24 forming the upper part of the housing 10; a pair of side panels 26 forming the left and right sides of the housing 10; and a lower crossbeam 28 forming the lower part of the housing 10. The various components 22, 24, 26, and 28 constituting the decorative cover 20 can be individually disassembled and assembled. The front can also be referred to as the front panel.
[0034] like Figure 2 As shown, the housing 10 internally houses the indoor heat exchanger 11 and the blower 13, etc. The blower 13 is a so-called crossflow fan with a rotating axis in a generally horizontal direction, that is, in the left-right direction.
[0035] An opening, or outlet 21, for the air duct 30 is formed on the front side of the decorative cover 20, which connects the inside and outside of the decorative cover 20. The outlet 21 is formed over approximately the entire range in the left-right direction of the decorative cover 20.
[0036] Indoor unit 1 draws in indoor air through a ventilated opening on the top panel 24. The drawn-in indoor air passes through a filter 29 that covers the indoor heat exchanger 11. Indoor unit 1 also regulates the indoor air by blowing the air, after heat exchange with the refrigerant in the indoor heat exchanger 11, into the room through the outlet 21.
[0037] The airflow duct 30 is guided by the airflow generated by the blower 13 to the outlet 21. Hereinafter, the airflow generated by the blower 13 will sometimes be referred to simply as "wind".
[0038] The air duct 30 is composed of a stabilizer 40 forming one side and a rear guide 31 configured opposite to the stabilizer 40 and forming the other side.
[0039] The indoor unit 1 has a first air guide plate 32 and a second air guide plate 33 that are formed in a generally flat shape and have a rotation axis in a generally horizontal direction.
[0040] The rear diffuser 31 extends downward in an arc shape from the rear of the blower 13. A first air guide plate 32 is rotatably provided on the end edge of the rear diffuser 31. The first air guide plate 32 can be closed to cover the blow outlet 21. The airflow direction can be guided and changed according to the angle of the first air guide plate 32.
[0041] A second air guide plate 33 is provided at the center of the outlet 21 in the vertical direction. The second air guide plate 33 is closer to the stabilizer 40 than the first air guide plate 32. The second air guide plate 33 guides the airflow to the center of the outlet duct 30. The second air guide plate 33 will be described in detail later.
[0042] (1-1-2. The structure of the stabilizer)
[0043] Figure 3 This is an enlarged cross-sectional view of stabilizer 40. (See reference...) Figure 3 A detailed description of stabilizer 40 is provided.
[0044] The stabilizer 40 has a tongue 41 formed in a manner that protrudes toward the blower 13.
[0045] The tongue 41 is positioned at the lower front side of the blower 13 and guides the airflow stabilizer 40 delivered by the blower 13. The front end of the tongue 41 is curved.
[0046] A flat blowing surface 42 extending downstream is formed in connection with the tongue 41. A curved surface 43 is formed in which the blowing surface P1 containing the blowing surface 42 is concave upwards.
[0047] The curved surface 43 has a first curved surface 44 that is tangent to the blown flat surface 42 and a second curved surface 45 that is tangent to the first curved surface 44 at a tangent point (intersection point) 46.
[0048] The first curved surface 44 is formed as an arc, and the second curved surface 45 is formed as an arc. The curvature of the first curved surface 44 and the second curved surface 45 can be appropriately changed respectively.
[0049] The curved surface 43 is formed such that the curved end edge 47, which constitutes the downstream edge of the curved surface 43, is located below the blown flat surface P1. The curved end edge 47 can also be referred to as the downstream edge of the second curved surface 45.
[0050] A recessed portion 48 is formed on the upper side of the curved end edge 47. Specifically, the recessed portion 48 is formed in a way that it is recessed upward from the imaginary plane P3 that connects the curved end edge 47 and the downstream end edge 53.
[0051] The first recess of the recess 48 extending upward from the curved end edge 47 is connected to the face 49 in a flat manner.
[0052] The first concave portion connecting face 49 is formed from the tangent P2 of the second curved face 45 of the curved end edge 47 at an elevation angle C1 upwards. The elevation angle C1 is 90° or more.
[0053] A recessed surface 50 extending in the front-rear direction is formed by connecting to the first recessed surface 49 and grounding. Alternatively, the recessed surface 50 may be formed as a curved surface rather than a flat surface.
[0054] The concave face 50 is located above the imaginary plane P3 connecting the downstream edge 53 of the edge that forms the downstream side of the stabilizer 40 and the curved edge 47.
[0055] A downwardly extending portion 51 is formed by connecting to the edge of the downstream side of the concave face 50 and grounding towards the front and lower side.
[0056] A second recessed connecting surface 52 is formed by connecting to the lower edge of the drooping portion 51 and extending forward and downward toward the lower end of the front panel 22 of the housing 10. The second recessed connecting surface 52 is formed flat. In this embodiment, the lower end of the front panel 22 corresponds to the downstream edge 53.
[0057] The angle C2 formed by the imaginary plane P5, which includes the second recess connecting the face 52, and the imaginary plane P4, which includes the front panel 22, is 90° or less.
[0058] Angle C2 corresponds to the angle behind and above the shell 10 in the angles formed by the four imaginary planes P5 and P4.
[0059] Furthermore, when the front panel 22 is formed curved rather than flat, the angle formed by the tangent of the most downstream edge 53 of the front panel 22 and the second recessed connecting face 52 is equivalent to angle C2.
[0060] Thus, the stabilizer 40 that forms one side of the blowing air duct 30 has, from upstream to downstream, a tongue 41, a flat blowing portion 42, a curved portion 43, and a recess 48.
[0061] (1-1-3. Structure of the second air guide plate)
[0062] The second air guide plate 33 is a horizontal air guide plate, which is specifically designed to achieve ceiling airflow during cooling. It has the function of converting the downward-vectoring airflow generated by the blower 13 into an upward-vectoring airflow.
[0063] The second air guide plate 33 has a lower first blade portion 33A and an upper second blade portion 33B. The first blade portion 33A and the second blade portion 33B are connected by a plurality of plate components (not shown) and swing together integrally. In addition, the second air guide plate 33 is composed of two blade portions, but it may also be composed of a single blade portion.
[0064] The second air guide plate 33 is configured such that its upper end is also located below the blow-out flat surface P1 when it swings.
[0065] The downstream end of the second guide vane 33 is configured such that, when the second guide vane 33 oscillates, it is located upstream of the vertical plane P6, which passes through the curved end edge 47 and is perpendicular to the blown-out flat surface P1. The second guide vane portion 33B is longer than the first blade portion 33A, and the downstream end of the second guide vane 33 corresponds to the downstream end of the first blade portion 33A.
[0066] (1-2. Actions)
[0067] For example, assuming indoor unit 1 is operating in cooling mode, the temperature of the air generated by the blower 13 is lower than that of the indoor air. The indoor air flows into the outlet duct 30 primarily driven by the temperature and pressure difference with the air. At this time, the indoor air flows in from a different direction than the air flowing out of the outlet duct 30, passing around the downstream edge 53. In the air flowing out of the outlet duct 30, especially the air flowing through the stabilizer 40, sometimes does not flow in the controlled direction on the side of the stabilizer 40 closer to the blower 13.
[0068] In particular, the airflow from the curved end edge 47 may sometimes flow into the periphery of the downstream end edge 53 due to the influence of indoor airflow. If the downstream end edge 53 and its nearby components are cooled by the airflow, condensation will occur due to the temperature difference with the indoor air.
[0069] In this embodiment, the angle C2 formed by the imaginary plane P5, which includes the second recess connecting face 52, and the imaginary plane P4, which includes the front panel 22, is 90° or less. Therefore, it is possible to prevent indoor air from being guided and flowing into the interior of the air outlet duct 30, especially into the recess 48 side. This is because the indoor air flowing from the surface of the front panel 22 needs to bend at a angle of 90° or more when it bends from the downstream edge 53 towards the recess 48 side.
[0070] The airflow from the blower 13 to the stabilizer 40 side will be explained.
[0071] First, the wind flows along the flat blowing section 42. Next, the wind flows along the first curved section 44, which is tangentially connected to the flat blowing section 42. This tangential structure facilitates the guidance of the wind along the first curved section 44.
[0072] Next, the wind flows along the second curved surface 45, which is tangentially connected to the first curved surface 44. Through this tangential structure, the wind is easily guided by the second curved surface 45.
[0073] The wind flowing along the second curved surface 45 gathers in the direction of the tangent P2 at the curved edge 47, flowing in a manner that separates it from the second curved surface 45. Since the elevation angle C1 is 90° or more, the wind is difficult to guide towards the recess 48. Furthermore, since the curved edge 47 is located below the blowing flat surface P1, which includes the blowing flat portion 42, the tangent P2 direction points downwards, making it difficult for the wind to mix with the indoor airflow. Additionally, since the tangent P2 is inclined downwards relative to the blowing flat surface P1, the vector of the wind guided by the blowing flat portion 42 can be directed away from the recess 48.
[0074] Next, the wind flowing out from the second section of the face 45 is directed towards the interior.
[0075] As explained above, even if indoor air flows in, it is difficult to mix with the air accumulated in the recess 48 or flowing out from the indoor unit 1. Therefore, the components at the downstream edge 53 and its vicinity will not be cooled by the air, and it is difficult to generate condensation due to the temperature difference with the indoor air.
[0076] (1-3. Effects, etc.)
[0077] As described above, the indoor unit 1 includes a housing 10, inside which is a blower 13 having a rotation axis in a generally horizontal direction, and an air outlet duct 30 formed by a stabilizer 40 and a rear guide vane 31 opposite to the stabilizer 40, through which the air generated by the blower 13 passes. The stabilizer 40 includes: a tongue 41 protruding toward the blower 13; a flat air outlet portion 42 formed and connected to the downstream side of the tongue 41; a curved portion 43 formed and recessed upwards connected to the downstream side of the flat air outlet portion 42; and a recess 48 formed and recessed upwards connected to the curved end edge 47 on the downstream side of the curved portion 43. The tangent P2 at which the curved end edge 47 is tangent to the curved portion 43 is inclined downwards than the flat air outlet portion 42.
[0078] According to this structure, the tangent P2 is inclined downward relative to the blowing flat surface P1, thus enabling the vector of the air guided by the blowing flat portion 42 to be directed away from the recess 48. Consequently, the air generated by the blower 13 can be guided towards the tangent P2 at the curved edge 47, thereby suppressing the mixing of the air with the indoor air flowing into the recess 48. Therefore, condensation on the downstream side of the blowing duct 30 of the indoor unit 1 can be suppressed.
[0079] Alternatively, the recess 48 may be formed above the imaginary plane P3 that connects the downstream edge 53 and the curved edge 47 on the downstream side of the stabilizer 40.
[0080] According to this structure, the indoor air that is drawn in by the wind flowing from the curved end edge 47 and flows in through the vicinity of the downstream end edge 53 is easily retained in the recess 48. Therefore, the mixing of wind with the indoor air flowing into the recess 48 can be suppressed, and the formation of condensation on the downstream side of the air outlet duct 30 of the indoor unit 1 can be suppressed.
[0081] Alternatively, the curved surface 43 may also have a first curved surface 44 tangent to the blown flat surface 42 and a second curved surface 45 tangent to the first curved surface 44.
[0082] According to this structure, since the flat section 42 is tangent to the first curved section 44, the air guided by the flat section 42 is easily guided by the first curved section 44. Furthermore, since the first curved section 44 is tangent to the second curved section 45, the air guided by the first curved section 44 is easily guided by the second curved section 45. Thus, the air guided by the flat section 42 is ultimately guided to the curved end edge 47. Therefore, it can be guided along the tangent P2 direction at the curved end edge 47, thereby suppressing the mixing of air with indoor air flowing into the recess 48. This also suppresses condensation on the downstream side of the air outlet duct 30 of the indoor unit 1.
[0083] Alternatively, the curved edge 47 may be located below the blow-out flat surface P1 containing the blow-out flat portion 42.
[0084] According to this structure, since the tangent P2 direction is downward, the wind flowing from the curved edge 47 is difficult to mix with the indoor airflow.
[0085] In addition, a flat first recessed connecting face 49, which connects to the curved end edge 47 and extends into the recess 48, is formed upward at an angle of 90° or more from the tangent P2.
[0086] According to this structure, since it is difficult for wind to be guided from the curved end edge 47 to the first recessed connecting surface 49, it is difficult for wind to flow into the recessed portion 48. Therefore, mixing of wind with indoor air flowing into the recessed portion 48 can be suppressed. Thus, condensation on the downstream side of the air outlet duct 30 of the indoor unit 1 can be suppressed.
[0087] Furthermore, the angle between the flat second recessed connecting face 52, which connects to the downstream edge 53 and extends into 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.
[0088] According to this structure, since it is difficult for wind to be guided from the downstream edge 53 to the second recessed connecting surface 52, indoor air is difficult to flow into the recessed area 48. Therefore, the mixing of wind with indoor air flowing into the recessed area 48 can be suppressed. Therefore, condensation on the downstream side of the air outlet duct 30 of the indoor unit 1 can be suppressed.
[0089] In addition, the indoor unit 1 has a first air guide plate 32 and a second air guide plate 33. The second air guide plate 33, which is close to the stabilizer 40, is positioned below the blow-out flat surface P1 containing the blow-out flat portion 42, and is positioned upstream of the vertical surface P6 that is perpendicular to the blow-out flat surface P1 and passes through the curved end edge 47.
[0090] If the upper end of the second air guide plate 33 is located above the blowing flat surface P1, the gap between the second air guide plate 33 and the stabilizer 40 is reduced, thereby increasing the flow velocity in the gap. As a result, the airflow becomes turbulent. Furthermore, if the downstream end of the second air guide plate 33 is configured to protrude downstream from the imaginary plane P6, the distance between the curved surface 43 and the second air guide plate 33 is easily reduced, and the gap is easily narrowed.
[0091] According to the structure of this embodiment, it is difficult to produce the above-mentioned air supply turbulence, and the air direction can be changed with higher precision using the second air guide plate 33.
[0092] (Other implementation methods)
[0093] As described above, Embodiment 1 has been illustrated as an example disclosed in this application. However, the technology disclosed herein is not limited to this and can also be applied to embodiments modified by alteration, substitution, addition, omission, etc. Furthermore, the constituent elements described in Embodiment 1 can be combined to form new embodiments. Therefore, other embodiments are illustrated below.
[0094] In the above-described embodiment 1, the recess 48 has a flat recessed surface 50, but is not limited thereto. The recess 48 can be appropriately modified in shape within the range where the first recessed connecting surface 49 is formed at an elevation angle C1 of 90° or more, and the second recessed connecting surface 52 is formed at an angle C2 of 90° or less.
[0095] Furthermore, since the above embodiments are used to illustrate the technology disclosed in this utility model, various changes, substitutions, additions, omissions, etc., can be made within the scope of the claims or their equivalents.
[0096] (2. The structure supported by the above embodiments)
[0097] The above implementation supports the following structures.
[0098] (Postscript)
[0099] (Technology 1) An indoor unit having a housing, inside which is a blower having a rotation axis in a generally horizontal direction, and an air outlet duct through which air generated by the blower passes, consisting of a stabilizer and a rear guide opposite to the stabilizer, the stabilizer comprising: a tongue protruding toward the blower; a flat air outlet portion formed and connected to a downstream side of the tongue; a curved surface portion formed and recessed upwards connected to the downstream side of the flat air outlet portion; and a recessed portion formed and recessed upwards connected to a curved end edge on the downstream side of the curved surface portion, wherein the tangent line between the curved end edge and the curved surface portion is inclined downwards than that of the flat air outlet portion.
[0100] Therefore, since the tangent is inclined downwards relative to the surface containing the flat section, the vector of the airflow guided by the flat section can be directed away from the recess. This allows the airflow generated by the blower to be guided tangentially at the curved edge, thus suppressing the mixing of airflow with indoor air flowing into the recess. Consequently, condensation on the downstream side of the indoor unit's airflow duct can be suppressed.
[0101] (Technology 2) The indoor unit as described in Technology 1, wherein the recess is formed above an imaginary plane that connects the downstream edge of the downstream side of the stabilizer to the curved edge.
[0102] As a result, the air flowing from the curved edge, drawn by the wind, tends to stagnate in the recess as it enters the room near the downstream edge. This suppresses the mixing of the wind with the indoor air flowing into the recess and also prevents condensation from forming on the downstream side of the indoor unit's exhaust duct.
[0103] (Technology 3) The indoor unit as described in Technology 1 or 2, wherein the curved surface has a first curved surface tangent to the flat blowing portion and a second curved surface tangent to the first curved surface.
[0104] Therefore, since the flat section of the air outlet is tangent to the first curved section, the air guided by the flat section is easily guided by the first curved section. Furthermore, since the first curved section is tangent to the second curved section, the air guided by the first curved section is easily guided by the second curved section. Thus, the air guided by the flat section is ultimately guided to the curved edge. Therefore, since it can be guided tangentially at the curved edge, mixing of the air with the indoor air flowing into the recess can be suppressed. Therefore, condensation on the downstream side of the indoor unit's air outlet duct can be suppressed.
[0105] (Technology 4) The indoor unit as described in any one of Technologies 1 to 3, wherein the curved end edge is located below the blow-out flat surface including the blow-out flat portion.
[0106] Therefore, since the tangent direction is downward, the wind flowing from the edge of the curved surface is difficult to mix with the indoor airflow.
[0107] (Technology 5) The indoor unit as described in any one of Technologies 1 to 4, wherein a flat first recessed connecting face that connects to the curved end edge and extends toward the recess is formed upward at an angle of 90° or more from the tangent.
[0108] Therefore, since it is difficult for air to be guided from the curved edge to the first concave connecting surface, air is difficult to flow into the concave side. Thus, mixing of air with indoor air flowing into the concave is suppressed. Therefore, condensation on the downstream side of the indoor unit's air outlet duct is suppressed.
[0109] (Technology 6) The indoor unit as described in any one of Technologies 2 to 5, wherein the angle between the flat second recess connecting face, which is connected to the most downstream edge and extends toward the recess, and the front face of the housing is 90° or less.
[0110] Therefore, since it is difficult for air to be guided from the lowest downstream edge to the second recessed connecting surface, indoor air is difficult to flow into the recessed side. Thus, mixing of airflow with indoor air flowing into the recess can be suppressed. Therefore, condensation on the downstream side of the indoor unit's outlet air duct can be suppressed.
[0111] (Technology 7) An indoor unit as described in any one of Technologies 1 to 3, wherein it has at least one air guide plate, the air guide plate being disposed on the side near the stabilizer at a position lower than the blowing flat surface including the blowing flat portion, and disposed on the upstream side of a second imaginary plane perpendicular to the blowing flat surface and passing through the curved end edge.
[0112] Therefore, since the gap between the air guide plate and the curved edge will not become too small, the wind is less likely to become turbulent, and the air direction can be changed with higher precision using the air guide plate.
[0113] Industrial availability
[0114] This invention applies to air conditioners. Specifically, it applies to household or commercial air conditioners with wall-mounted indoor units.
[0115] Explanation of reference numerals in the attached figures
[0116] 1 Indoor unit
[0117] 10 housing
[0118] 11 Indoor heat exchangers
[0119] 13 blowers
[0120] 20 decorative covers
[0121] 21 blowout
[0122] 22 Front Panel
[0123] 24 Top Panel
[0124] 26 side panels
[0125] 28 Lower Beam
[0126] 29 filters
[0127] 30 blown out of the air duct
[0128] 31 rear diffuser
[0129] 32. First air deflector (louver)
[0130] 33 Second air guide plate
[0131] 40 stabilizer
[0132] 41 tongue
[0133] 42. Blow out the flat part
[0134] 43-curved face
[0135] 44 First Movement Facial
[0136] 45. Second movement, face
[0137] 46 contacts
[0138] 47 Curved edge
[0139] 48 concavity
[0140] 49 The first concave part connects to the face
[0141] 50 concave face
[0142] 51 Lower part
[0143] 52 The second concave part connects to the face
[0144] 53 Downstream edge
[0145] C1 Elevation Angle
[0146] C2 angle
[0147] P1 blows out a flat surface
[0148] P2 tangent
[0149] P3 Imaginary Plane
[0150] P4 Imaginary Plane
[0151] P5 Imaginary Plane
[0152] P6 Vertical plane
[0153] W wall.
Claims
1. An indoor unit, characterized by, include: case, Inside the housing is a blower with a rotating axis in a generally horizontal direction, and an exhaust duct consisting of a stabilizer and a rear guide vane opposite the stabilizer, through which the air generated by the blower passes. The stabilizer includes: a tongue protruding toward the blower side; a flat blowing section formed and connected to the downstream side of the tongue; a curved section formed and recessed upwards, connected to the downstream side of the flat blowing section; and a recessed portion formed and recessed upwards, connected to the curved end edge of the downstream side of the curved section. The tangent line that is tangent to the curved surface end edge and the curved surface is inclined downwards compared to the blown-out flat portion.
2. The indoor unit as described in claim 1, characterized in that, The recess is formed above the imaginary plane connecting the downstream edge of the stabilizer and the curved edge.
3. The indoor unit as described in claim 2, characterized in that, The curved surface has a first curved surface that is tangent to the blown-out flat portion and a second curved surface that is tangent to the first curved surface.
4. The indoor unit as described in any one of claims 1 to 3, characterized in that, The curved edge is located below the blown-out flat surface that includes the blown-out flat portion.
5. The indoor unit as described in any one of claims 1 to 3, characterized in that, A flat first recessed connecting face, which connects to the curved end edge and extends into the recess, is formed upward at an angle of 90° or more from the tangent.
6. The indoor unit as described in any one of claims 2 or 3, characterized in that, The angle between the flat second recess connecting face, which is connected to the downstream edge and extends toward the recess, and the front face of the housing is less than 90°.
7. The indoor unit as described in any one of claims 1 to 3, characterized in that, It has at least one air guide plate. The air guide plate near the stabilizer is positioned below the blow-out flat surface containing the blow-out flat portion, and is positioned upstream of the second imaginary plane that is perpendicular to the blow-out flat surface and passes through the curved end edge.