Air conditioner indoor unit with grating strips at side air outlets

Abstract

The utility model provides an air conditioner indoor unit with grating bars at a side air outlet. The air conditioner indoor unit comprises a vertically-arranged shell, an air supply channel, a first side air channel, a second side air channel, a plurality of vertical first grating bars and a plurality of vertical second grating bars. The housing has a front wall, a first side wall, and a second side wall. A front air outlet is formed in the front wall and serves as an outlet of the air supply channel. The first side wall is provided with a first side air outlet communicating with the air supply channel through a first side air duct. The second side wall is provided with a second side air outlet communicating with the air supply channel through a second side air duct. The multiple vertical first grating strips are arranged at intervals in the width direction of the first side air outlet, and the inclination angles of the first grating strips are different. And the multiple vertical second grating strips are arranged at intervals in the width direction of the second side air outlet, and the inclination angles of the second grating strips are different. And the inclination angles of the multiple first grid strips and the multiple second grid strips are different, so that the air outlet resistance can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of air treatment technology, and in particular to an indoor unit of an air conditioner with a side air outlet and a grille. Background Technology

[0002] Currently, when air conditioner indoor units are column-type cabinet units, the air outlet structure of the indoor unit often uses a single cross-flow fan with a single air outlet. That is, the heat exchange airflow delivered by the cross-flow fan from the heat exchange duct is blown into the indoor space through a single air outlet. This single air outlet structure is prone to problems such as heat exchange air blowing directly onto the user and the air delivery angle being limited to a small area, resulting in a poor user experience and even affecting the user's health. Utility Model Content

[0003] In view of the above problems, this utility model is proposed to provide an air conditioner indoor unit with a side air outlet and grille strip to overcome or at least partially solve the above problems. It can solve the problem that the air outlet mode of the existing cabinet air conditioner indoor unit is limited by a single air outlet, thereby improving the user experience.

[0004] Specifically, this utility model provides an indoor unit of an air conditioner with a side air outlet and a grille, comprising a vertically arranged housing, and an air supply channel, a first side air duct, and a second side air duct disposed within the housing; the housing has:

[0005] The front wall has a front air outlet extending vertically, which is the outlet of the air supply channel;

[0006] A first sidewall is connected to one side of the front wall. A first side air outlet is provided on the first sidewall. The first side air outlet is connected to the air supply channel through the first side air duct.

[0007] The second sidewall is connected to the other side of the front wall; a second side air outlet is provided on the second sidewall, and the second side air outlet is connected to the air supply channel through the second side air duct;

[0008] Multiple vertical first grille strips are spaced apart along the width direction of the first side air outlet, and the tilt angle of each first grille strip is different;

[0009] Multiple vertical second grille strips are spaced apart along the width of the second side air outlet, and each second grille strip has a different tilt angle.

[0010] Optionally, the front edge of the first side air outlet is disposed on the front wall, and the front edge of the second side air outlet is disposed on the front wall;

[0011] The front edge of the first side air outlet is located diagonally in front of the inlet edge of the front wall of the first side air duct; the rear edge of the first side air outlet is located diagonally in front of the inlet edge of the rear wall of the first side air duct; the inlet edge of the front wall of the first side air duct is located diagonally in front of the inlet edge of the rear wall of the first side air duct, close to the first side wall.

[0012] The front edge of the second side air outlet is located diagonally in front of the inlet edge of the front wall of the second side air duct; the rear edge of the second side air outlet is located diagonally in front of the inlet edge of the rear wall of the second side air duct; the inlet edge of the front wall of the second side air duct is located diagonally in front of the inlet edge of the rear wall of the second side air duct.

[0013] Optionally, the rear wall of the first side air duct is the first air duct wall, and the front wall of the first side air duct is the second air duct wall, both the first air duct wall and the second air duct wall are inclined surfaces;

[0014] The angle between the first air duct wall and the first reference surface on the lateral side is the first included angle, which is an acute angle, and the first reference surface is a vertical plane extending laterally; the angle between the second air duct wall and the first reference surface on the lateral side is the second included angle, which is an acute angle, and the second included angle is greater than the first included angle; the first included angle is less than 40°;

[0015] The rear wall of the second side air duct is the third air duct wall, and the front wall of the second side air duct is the fourth air duct wall. Both the third air duct wall and the fourth air duct wall are inclined surfaces.

[0016] The angle between the third air duct wall and the first reference surface on the lateral side is the third included angle, which is an acute angle; the angle between the fourth air duct wall and the first reference surface on the lateral side is the fourth included angle, which is an acute angle; the fourth included angle is greater than the third included angle; the third included angle is less than 40°.

[0017] Optionally, from back to front, the angle between the plurality of first grille bars and the first air duct wall gradually increases, and the first first grille bar is parallel to the first air duct wall, while the last first grille bar is parallel to the second air duct wall;

[0018] From back to front, the angle between the multiple second grille bars and the third air duct wall gradually increases, and the first second grille bar is parallel to the third air duct wall, while the last second grille bar is parallel to the fourth air duct wall.

[0019] Optionally, the difference between the included angles between each pair of adjacent first grille bars and the first air duct wall is a first included angle difference, and the first included angle differences are equal; the first included angle difference is equal to the ratio of the difference between the second included angle and the first included angle to the number of intervals between two adjacent first grille bars;

[0020] The difference between the included angles between each pair of adjacent second grid bars and the third air duct wall is the second included angle difference value, and the second included angle differences are equal; the second included angle difference value is equal to the ratio of the difference between the fourth included angle and the third included angle to the number of intervals between two adjacent second grid bars.

[0021] Optionally, the ratio of the distance between any two adjacent first grille bars to the width of the first side air outlet is 0.05 to 0.07;

[0022] The ratio of the distance between any two adjacent second grille bars to the width of the second side air outlet is 0.05 to 0.07.

[0023] Optionally, the indoor unit of the air conditioner further includes:

[0024] A volute and a volute tongue for defining the air supply channel, wherein the first sidewall is adjacent to the volute tongue and the second sidewall is adjacent to the volute;

[0025] A cross-flow fan is installed within the air supply channel;

[0026] The volute includes a first air duct section, the surface of which defines the air supply channel is a concave first arc-shaped surface, the front end of which is connected to the first air duct wall; the front end of which is located obliquely in front of the rear end of which is adjacent to a second reference surface; the second reference surface is a vertical plane extending in the front-back direction and is located at the midpoint between the inlet edge of the first air duct wall and the inlet edge of the third air duct wall in the lateral direction.

[0027] The volute includes a second air duct section, the surface of which defines the air supply channel is connected to the third air duct wall via a second arcuate surface.

[0028] The front end of the second arc-shaped surface is located diagonally in front of the rear end, the rear end of the second arc-shaped surface is adjacent to the second reference surface, and the vertical distance between the rear end of the second arc-shaped surface and the second reference surface is greater than the minimum distance between the second arc-shaped surface and the second reference surface.

[0029] Optionally, the ratio of the radius of the first arc-shaped surface to the diameter of the cross-flow impeller is 0.63 to 0.71, and the central angle of the first arc-shaped surface is 40° to 50°.

[0030] The radius of the second arc-shaped surface is greater than 4 mm and less than 20 mm, the ratio of the radius of the second arc-shaped surface to the radius of the first arc-shaped surface is 0.20 to 0.25, and the central angle of the second arc-shaped surface is 100° to 110°.

[0031] Optionally, the inlet end of the front wall of the first side air duct is the first inlet edge, and the inlet end of the front wall of the second side air duct is the second inlet edge;

[0032] The ratio of the vertical distance between the first inlet edge and the second reference surface to the vertical distance between the second inlet edge and the second reference surface is 1.27 to 1.35;

[0033] The vertical distance from the first inlet edge to the first air duct wall is the first inlet distance, and the vertical distance from the second inlet edge to the third air duct wall is the second inlet distance;

[0034] The ratio of the first inlet distance to the width of the first side outlet is 0.65 to 0.91;

[0035] The ratio of the second inlet distance to the width of the second side outlet is 0.72 to 0.93;

[0036] The ratio of the first inlet distance to the second inlet distance is 0.91 to 0.98.

[0037] Optionally, the inlet end of the rear wall of the first side air duct is the third inlet edge, and the inlet end of the rear wall of the second side air duct is the fourth inlet edge.

[0038] The ratio of the first inlet distance to the lateral distance from the third inlet edge to the fourth inlet edge is 0.24 to 0.27;

[0039] The ratio of the vertical distance from the third inlet edge to the second reference surface to the vertical distance from the first inlet edge to the second reference surface is 0.7 to 0.75;

[0040] The ratio of the vertical distance from the fourth inlet edge to the second reference surface to the vertical distance from the second inlet edge to the second reference surface is 0.98 to 1.02.

[0041] In the indoor unit of this air conditioner with a side-outlet grille, airflow passes through an air supply duct. Part of the airflow exits from the front outlet, part flows through a first side duct and exits from the first side outlet, and the remaining airflow passes through a second side duct and exits from the second side outlet. The first and second side outlets, located on opposite sides of the casing, effectively increase the lateral airflow angle. The different orientations of the front outlet, first side outlet, and second side outlet also help minimize interference between the airflows when all three outlets are operating simultaneously, preventing the side airflow from being drawn towards the center by the suction effect of the front outlet on the front wall, thus reducing the airflow angle. Furthermore, multiple vertical first grille strips are positioned at the first side outlet, which disperses the airflow, improving comfort and maintaining an aesthetically pleasing casing. The different inclination angles of the multiple first grille strips also reduce resistance to the airflow from the first side outlet, minimizing its impact. Multiple vertical second grille strips are installed at the second side air outlet, which not only disperses the airflow from the second side air outlet, improving airflow comfort, but also ensures an aesthetically pleasing casing. The different inclination angles of the multiple second grille strips also reduce the resistance of the second grille strips to the airflow from the second side air outlet, minimizing their impact.

[0042] The above and other objects, advantages and features of this utility model will become more apparent to those skilled in the art from the following detailed description of specific embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0043] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0044] Figure 1 This is a schematic structural diagram of an indoor unit of an air conditioner according to an embodiment of the present invention;

[0045] Figure 2 This is a schematic structural diagram of an indoor unit of an air conditioner according to an embodiment of the present invention;

[0046] Figure 3 yes Figure 2 Enlarged view of A in the middle;

[0047] Figure 4 This is a schematic structural diagram of an indoor unit of an air conditioner according to an embodiment of the present invention;

[0048] Figure 5 This is a schematic structural diagram of an indoor unit of an air conditioner according to an embodiment of the present invention;

[0049] Figure 6 This is a schematic structural diagram of an indoor unit of an air conditioner according to an embodiment of the present utility model. Detailed Implementation

[0050] The following reference Figures 1 to 6 This description pertains to an indoor air conditioner unit with a side-discharge grille according to an embodiment of the present invention. In this description, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature, that is, include one or more of that feature. In the description of this invention, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it encompasses, unless otherwise specifically described, this indicates that other features are not excluded and may be further included.

[0051] Unless otherwise expressly specified and limited, the terms "set," "install," "connect," "link," "fix," and "couple" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art should be able to understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0052] Furthermore, in the description of this embodiment, "above" or "below" the second feature can include direct contact between the first and second features, or it can include contact between the first and second features through another feature between them. That is, in the description of this embodiment, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," or "below" of the second feature can mean the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0053] In the description of this embodiment, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0054] Figure 1 This is a schematic structural diagram of an indoor unit of an air conditioner according to an embodiment of the present invention, as shown below. Figure 1 As shown, and refer to Figures 2 to 6 This utility model provides an indoor unit of an air conditioner with a side air outlet and grille bars, including a vertically arranged housing 100, an air supply duct 200 disposed within the housing 100, a first side air duct 300, a second side air duct 400, a plurality of vertical first grille bars 910, and a plurality of vertical second grille bars 920. The housing 100 has a front wall 110, a first side wall 120, and a second side wall 130. A front air outlet 140 extending vertically is provided on the front wall 110, and the front air outlet 140 is the outlet of the air supply duct 200. The first side wall 120 is connected to one side of the front wall 110, and a first side air outlet 150 is provided on the first side wall 120, which is connected to the air supply duct 200 through the first side air duct 300. The second side wall 130 is connected to the other side of the front wall 110. A second side air outlet 160 is provided on the second side wall 130, and the second side air outlet 160 is connected to the air supply channel 200 through the second side air duct 400. Multiple vertical first grille bars 910 are spaced apart along the width direction of the first side air outlet, and each first grille bar 910 has a different inclination angle. Multiple vertical second grille bars 920 are also spaced apart along the width direction of the second side air outlet, and each second grille bar 920 has a different inclination angle.

[0055] In the indoor unit of the air conditioner according to this embodiment, airflow passes through the air supply channel 200. Part of the airflow exits from the front air outlet 140, part of the airflow passes through the first side air duct 300 and exits from the first side air outlet 150, and the remaining airflow passes through the second side air duct 400 and exits from the second side air outlet 160. The first side air outlet 150 and the second side air outlet 160, located on both sides of the housing 100, effectively increase the lateral air supply angle. The different orientations of the front air outlet 140, the first side air outlet 150, and the second side air outlet 160 also help to ensure minimal interference between the air outlets when all three outlets are discharging air simultaneously, preventing the side airflow from being deflected towards the center by the suction effect of the front air outlet 140 on the front wall 110, thus reducing the airflow angle. Furthermore, multiple vertical first grille strips 910 are arranged at the first side air outlet, which can disperse the airflow from the first side air outlet, improving airflow comfort and ensuring an aesthetically pleasing housing appearance. The varying angles of the multiple first grille strips 910 reduce the resistance of the first grille strips 910 to the airflow from the first side outlet, thus minimizing their impact. The multiple vertical second grille strips 920 positioned at the second side outlet not only disperse the airflow, improving comfort, but also maintain an aesthetically pleasing casing. The varying angles of the multiple second grille strips 920 further reduce the resistance of the second grille strips 920 to the airflow from the second side outlet, minimizing their impact.

[0056] In some embodiments of this utility model, such as Figure 1 and Figure 2As shown, the indoor unit of the air conditioner also includes a volute 500, a volute tongue 600, and a cross-flow fan 700 for defining an air supply duct 200. A first sidewall 120 is adjacent to the volute tongue 600, and a second sidewall 130 is adjacent to the volute 500. The cross-flow fan 700 is disposed within the air supply duct 200. The volute tongue 600 includes a first air duct section, the surface of which for defining the air supply duct 200 is a concave first arcuate surface 610, the front end of which is connected to the rear wall of the first side air duct 300. The front end of the first arcuate surface 610 is located obliquely in front of the rear end of the first arcuate surface 610, and the rear end of the first arcuate surface 610 is adjacent to a second reference surface. The second reference surface is a vertical plane extending front to back, and is located at the midpoint between the inlet edge of the rear wall of the first side air duct 300 and the inlet edge of the rear wall of the second side air duct 400 in the lateral direction. The volute 500 includes a second air duct section 510, the surface of which defines the air supply passage 200 is connected to the rear wall of the second side air duct 400 via a second arcuate surface 520. The front end of the second arcuate surface 520 is located obliquely in front of its rear end, the rear end of the second arcuate surface 520 is adjacent to a second reference surface, and the vertical distance between the rear end of the second arcuate surface 520 and the second reference surface is greater than the minimum distance between the second arcuate surface 520 and the second reference surface.

[0057] Most of the air blown out from the cross-flow fan 700 will be biased towards the volute 500. The arrangement of the first arc surface 610 and the second air duct section 510 will cause part of the airflow approaching the volute 500 to be blown towards the first arc surface 610 and then blown forward, which is conducive to uniform airflow in the entire air supply channel 200.

[0058] Furthermore, in some embodiments of this utility model, such as Figure 2 As shown, the ratio between the radius R2 of the first arc surface 610 and the diameter of the cross-flow impeller 700 is 0.63 to 0.71, and the central angle of the first arc surface 610 is 40° to 50°.

[0059] In some embodiments of this invention, the radius R1 of the second arc-shaped surface is greater than 4 mm and less than 20 mm, the ratio of the radius of the second arc-shaped surface to the radius of the first arc-shaped surface is 0.2 to 0.25, and the central angle of the second arc-shaped surface is 100° to 110°. The above-mentioned limitation on the second arc-shaped surface reduces the flow resistance of the airflow entering the second side air duct 400 through the air supply channel 200.

[0060] In some embodiments of this utility model, such as Figures 1 to 6As shown, the upper edges of the front air outlet 140, the first side air outlet 150, and the second side air outlet 160 are flush. The lower edges of the front air outlet 140, the first side air outlet 150, and the second side air outlet 160 are also flush. The ratio between the width of the front air outlet 140 and the diameter of the cross-flow impeller 700 is 1.29 to 1.42, ensuring sufficient airflow from the front air outlet 140. The ratio of the width of the first side air outlet 150 to the width of the front air outlet 140 is 0.25 to 0.33, and the ratio of the width of the second side air outlet 160 to the width of the front air outlet 140 is also 0.25 to 0.33. This means that the air outlet areas of both the first side air outlet 150 and the second side air outlet 160 are significantly smaller than the air outlet area of ​​the front air outlet 140, while their air outlet areas are similar. This arrangement ensures that when the front air outlet 140, the first side air outlet 150, and the second side air outlet 160 discharge air simultaneously, or when either the first side air outlet 150 or the second side air outlet 160 discharges air individually, the airflow can be more appropriately directed to the user's usual location and surrounding area, effectively reducing or even completely preventing the airflow from the indoor unit of the air conditioner from directly blowing on the user.

[0061] In some embodiments of this utility model, such as Figure 2 As shown, the width W1 of the first side air outlet 150 and the second side air outlet 160 is equal. This arrangement makes the appearance of the indoor unit of the air conditioner consistent and more aesthetically pleasing.

[0062] In some embodiments of this utility model, such as Figures 1 to 6 As shown, the front edge of the first side air outlet is set on the front wall, and the front edge of the second side air outlet is set on the front wall.

[0063] This design not only facilitates a compact duct layout inside the air conditioner's indoor unit, significantly reducing the thickness of multi-outlet air conditioner indoor units in the front-to-back direction, but also allows for the installation of ducts capable of blowing out a certain forward component of airflow for the first side outlet 150 and the second side outlet 160. This ensures that the airflow from the first side outlet 150 and the second side outlet 160 has a certain forward velocity component, facilitating the airflow from the first side outlet 150 and the second side outlet 160 to move in a side-forward direction, better delivering it from the periphery to the area around the user, rather than blowing it directly onto the user.

[0064] In some embodiments of this utility model, such as Figures 1 to 6As shown, the front edge of the first side air outlet 150 is obliquely in front of the inlet edge of the front wall of the first side air duct 300. The rear edge of the first side air outlet 150 is obliquely in front of the inlet edge of the rear wall of the first side air duct 300. The inlet edge of the front wall of the first side air duct 300 is obliquely in front of the inlet edge of the rear wall of the first side air duct 300, close to the first side wall 120. That is to say, the first side air duct 300 is inclined to the right rear forward and obliquely forward, which is more conducive to the entry of the air outlet through the air supply channel 200.

[0065] In some embodiments of this utility model, such as Figures 1 to 6 As shown, the rear edge of the second side air outlet 160 is obliquely in front of the inlet edge of the rear wall of the second side air duct 400. The front edge of the second side air outlet 160 is in front of the inlet edge of the front wall 110 of the second side air duct 400. The inlet edge of the front wall 110 of the second side air duct 400 is obliquely in front of the inlet edge of the rear wall of the second side air duct 400, close to the second side wall 130. That is to say, the second side air duct 400 is inclined from back to front and obliquely forward, which is more conducive to the entry of the air outlet through the air supply channel 200.

[0066] In some embodiments of this utility model, such as Figures 1 to 6 As shown, the inlet end of the front wall of the first side air duct 300 is the first inlet edge 330, and the inlet end of the front wall of the second side air duct 400 is the second inlet edge 430. The ratio of the vertical distance between the first inlet edge 330 and the second reference surface to the vertical distance between the second inlet edge 430 and the second reference surface is 1.27 to 1.35. That is, the vertical distance between the first inlet edge 330 and the second reference surface is greater than the vertical distance between the second inlet edge 430 and the second reference surface. Since the airflow from the cross-flow fan will be more concentrated on the volute 500 side, this arrangement ensures that the amount of airflow from the air supply channel 200 entering the first side air duct 300 and the second side air duct 400 is not significantly different, thereby ensuring that the airflow from the first side air outlet 150 and the second side air outlet 160 is not significantly different, and ensuring uniform airflow from both sides of the housing 100.

[0067] In some embodiments of this utility model, such as Figures 1 to 6As shown, the vertical distance from the first inlet edge 330 to the rear wall of the first side air duct is the first inlet distance W6, and the vertical distance from the second inlet edge 430 to the rear wall of the second side air duct is the second inlet distance W7. The ratio of the first inlet distance to the first side air outlet 150 is 0.65 to 0.91. The ratio of the second inlet distance to the second side air outlet 160 is 0.72 to 0.93. The ratio of the first inlet distance W6 to the second inlet distance W7 is 0.91 to 0.98. As can be seen from the previous embodiments, the first side air duct 300 is easier to inlet, so the inlet of the first side air duct 300 can be slightly smaller than the inlet of the second side air duct 400 to ensure uniform airflow between the first side air duct 300 and the second side air duct 400.

[0068] In some embodiments of this utility model, such as Figures 1 to 6 As shown, the inlet end of the rear wall of the first side air duct 300 is the third inlet edge 320, and the inlet end of the rear wall of the second side air duct 400 is the fourth inlet edge 420. The ratio of the first inlet distance W6 to the lateral distance W5 between the third inlet edge 320 and the fourth inlet edge 420 is 0.24 to 0.27.

[0069] In some embodiments of this utility model, the ratio of the distance from the third inlet edge 320 to the second reference surface to the distance from the first inlet edge to the second reference surface is 0.7 to 0.75.

[0070] In some embodiments of this utility model, the ratio of the vertical distance from the fourth inlet edge to the second reference surface to the vertical distance from the second inlet edge to the second reference surface is 0.98 to 1.02.

[0071] In some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, the rear wall of the first side air duct 300 is the first air duct wall 310, and the front wall of the first side air duct 300 is the second air duct wall 340. Both the first air duct wall 310 and the second air duct wall 340 are inclined surfaces. The angle between the first air duct wall 310 and the first reference surface facing laterally is the first included angle b, which is an acute angle. The angle between the second air duct wall 340 and the first reference surface facing laterally is the second included angle c, which is also an acute angle, and c is greater than b. The first reference surface is a vertical plane perpendicular to the second reference surface. In other words, along the airflow direction, the first side air duct 300 gradually widens, making it a diffuser section, increasing the static pressure of the airflow, which helps to increase the wind speed of the first side air duct 300. This allows the airflow blown from the first side air outlet 150 to travel a longer distance forward, reaching users farther away from the indoor unit of the air conditioner.

[0072] In some embodiments of this utility model, preferably, the first included angle b is less than 40°.

[0073] In some embodiments of this utility model, such as Figure 2 As shown, from back to front, the angle between the multiple first grille bars 910 and the first air duct wall 310 gradually increases, and the first first grille bar 910 is parallel to the first air duct wall 310, while the last first grille bar 910 is parallel to the second air duct wall 340.

[0074] The first included angle of the first air duct wall 310 located at the rear is smaller, and the second included angle of the second air duct wall 340 located at the front is larger. From back to front, the included angle between the multiple first grille bars 910 and the first air duct wall gradually increases, which can make the side of the first grille bar 910 basically consistent with the direction of airflow, thereby reducing the resistance of the first grille bar 910 to the airflow passing through the first grille bar 910.

[0075] Furthermore, in some embodiments of this utility model, such as Figure 2 As shown, the difference in the angle between each pair of adjacent first grille bars 910 and the first air duct wall is called the first angle difference, and the first angle differences are equal. The first angle difference is equal to the ratio of the difference between the second angle and the first angle to the number of intervals between two adjacent first grille bars. Each pair of adjacent first grille bars forms a gap, and the number of gaps is equal to the number of first grille bars minus 1.

[0076] In some embodiments of this utility model, such as Figure 2 As shown, the ratio of the distance between any two adjacent first grille bars 910 to the width of the first side air outlet is 0.05 to 0.07. Alternatively, the ratio of the spacing width on either side or one side of each first grille bar 910 to the width of that first grille bar 910 is between 1 and 2.5.

[0077] In some embodiments of this utility model, such as Figure 1 and Figure 2 As shown, the rear wall of the second side air duct 400 is the third air duct wall 410, and the front wall of the second side air duct 400 is the fourth air duct wall 440. Both the third air duct wall 410 and the fourth air duct wall 440 are inclined surfaces. The angle between the third air duct wall 410 and the first reference surface on the lateral side is the third included angle α, which is an acute angle. The angle between the fourth air duct wall 440 and the first reference surface on the lateral side is the fourth included angle d, which is also an acute angle, and d is greater than α. That is to say, along the airflow direction, the second side air duct 400 gradually widens, making the second side air duct 400 a diffuser section, increasing the static pressure of the airflow, which is beneficial to increasing the wind speed of the second side air duct 400. This allows the airflow blown out from the second side air outlet 160 to travel a longer distance forward, thus reaching users farther away from the indoor unit of the air conditioner.

[0078] In some embodiments of this utility model, preferably, a is less than 40°.

[0079] In some embodiments of this utility model, such as Figure 2 and Figure 3 As shown, from back to front, the angle between the multiple second grille bars 920 and the third air duct wall 410 gradually increases, and the first second grille bar 920 is parallel to the third air duct wall, while the last second grille bar 920 is parallel to the fourth air duct wall.

[0080] The third included angle of the third air duct wall located at the rear is smaller, and the fourth included angle of the fourth air duct wall located at the front is larger. From back to front, the included angle between the multiple second grille bars 920 and the third air duct wall gradually increases, which can make the side of the second grille bar 920 basically consistent with the direction of airflow, thereby reducing the resistance of the multiple second grille bars 920 to the airflow passing through the second grille bar 920.

[0081] In some embodiments of this utility model, such as Figure 2 and Figure 3 As shown, the difference in the angle between each pair of adjacent second grid bars 920 and the third duct wall is called the second angle difference, and the second angle differences are equal. The second angle difference is equal to the ratio of the difference between the fourth angle and the third angle to the number of intervals between two adjacent second grid bars.

[0082] Taking a difference of 20° between the fourth and third included angles, and assuming a quantity of 9 second grille strips 920, with 8 intervals between adjacent second grille strips, the difference in the second included angle is 2.5°. The angle between the subsequent second grille strip and the third duct wall is 2.5° greater than the angle between the previous second grille strip and the third duct wall. Alternatively, it can be calculated using the angle between each second grille strip 920 and the first reference surface. Figure 2 and 3 As shown, taking an example with 9 second grid strips 920, a fourth included angle of d, and a third included angle of a, the angle between the first second grid strip 920 and the first reference surface is e1, where e1 equals a. The angle between the last second grid strip 920 and the first reference surface is e9, where e9 equals d. The angle between the second second grid strip 920 and the first reference surface is... The tilt angle of the eighth second grille bar 920 is In other words, if the number of the multiple second grid strips 920 is N, then the angle between the i-th second grid strip 920 and the first reference plane is .

[0083] In some embodiments of this utility model, such as Figures 1 to 6As shown, the ratio of the distance between any two adjacent second grille strips 920 to the width of the second side air outlet is 0.05 to 0.07. Alternatively, the ratio of the spacing width H2 on either side or one side of each second grille strip 920 to the width H1 of that second grille strip 920 is between 1 and 2.5.

[0084] In some embodiments of this utility model, such as Figures 1 to 6 As shown, the indoor unit of the air conditioner includes a first air guide plate 801 and a second air guide plate 802. Figure 1 As shown, the first air guide plate 801 and the second air guide plate 802 close the front air outlet, and the airflow is blown out from the first side air outlet and the second side air outlet. Figure 4 As shown, the first and second air guide plates extend front to back, and the airflow blows forward from the front air outlet. Figure 5 As shown, the front edges of the first and second air guide plates are located diagonally in front of the rear edge, close to the first side air outlet. Most of the airflow blows diagonally forward from the front air outlet, a portion of the airflow blows laterally from the first side air outlet, and the remaining portion of the airflow blows laterally from the second side air outlet. Figure 6 As shown, the front edges of the first and second air guide plates are located diagonally in front of the rear edge, close to the second side air outlet. Most of the airflow is blown diagonally forward from the front air outlet, a portion of the airflow is blown laterally from the first side air outlet, and the remaining portion of the airflow is blown laterally from the second side air outlet.

[0085] Therefore, those skilled in the art should recognize that although many exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and recognized as covering all such other variations or modifications.

Claims

1. An indoor unit of an air conditioner with a side air outlet and a grille, characterized in that, It includes a vertically arranged housing, and an air supply channel, a first side air duct, and a second side air duct disposed within the housing; the housing has: The front wall has a front air outlet extending vertically, which is the outlet of the air supply channel; A first sidewall is connected to one side of the front wall. A first side air outlet is provided on the first sidewall. The first side air outlet is connected to the air supply channel through the first side air duct. The second sidewall is connected to the other side of the front wall; a second side air outlet is provided on the second sidewall, and the second side air outlet is connected to the air supply channel through the second side air duct; Multiple vertical first grille strips are spaced apart along the width direction of the first side air outlet, and the tilt angle of each first grille strip is different; Multiple vertical second grille strips are spaced apart along the width of the second side air outlet, and each second grille strip has a different tilt angle.

2. The indoor unit of the air conditioner according to claim 1, characterized in that, The front edge of the first side air outlet is disposed on the front wall, and the front edge of the second side air outlet is disposed on the front wall; The front edge of the first side air outlet is located diagonally in front of the inlet edge of the front wall of the first side air duct; the rear edge of the first side air outlet is located diagonally in front of the inlet edge of the rear wall of the first side air duct; the inlet edge of the front wall of the first side air duct is located diagonally in front of the inlet edge of the rear wall of the first side air duct, close to the first side wall. The front edge of the second side air outlet is located diagonally in front of the inlet edge of the front wall of the second side air duct; the rear edge of the second side air outlet is located diagonally in front of the inlet edge of the rear wall of the second side air duct; the inlet edge of the front wall of the second side air duct is located diagonally in front of the inlet edge of the rear wall of the second side air duct.

3. The indoor unit of the air conditioner according to claim 2, characterized in that, The rear wall of the first side air duct is the first air duct wall, and the front wall of the first side air duct is the second air duct wall. Both the first air duct wall and the second air duct wall are inclined surfaces. The angle between the first air duct wall and the first reference surface on the lateral side is the first included angle, which is an acute angle, and the first reference surface is a vertical plane extending laterally; the angle between the second air duct wall and the first reference surface on the lateral side is the second included angle, which is an acute angle, and the second included angle is greater than the first included angle; the first included angle is less than 40°; The rear wall of the second side air duct is the third air duct wall, and the front wall of the second side air duct is the fourth air duct wall. Both the third air duct wall and the fourth air duct wall are inclined surfaces. The angle between the third air duct wall and the first reference surface on the lateral side is the third included angle, which is an acute angle; the angle between the fourth air duct wall and the first reference surface on the lateral side is the fourth included angle, which is an acute angle; the fourth included angle is greater than the third included angle; the third included angle is less than 40°.

4. The indoor unit of the air conditioner according to claim 3, characterized in that, From back to front, the angle between the multiple first grille bars and the first air duct wall gradually increases, and the first first grille bar is parallel to the first air duct wall, while the last first grille bar is parallel to the second air duct wall. From back to front, the angle between the multiple second grille bars and the third air duct wall gradually increases, and the first second grille bar is parallel to the third air duct wall, while the last second grille bar is parallel to the fourth air duct wall.

5. The indoor unit of the air conditioner according to claim 4, characterized in that, The difference between the included angles between each pair of adjacent first grille bars and the first air duct wall is the first included angle difference, and the first included angle differences are equal; the first included angle difference is equal to the ratio of the difference between the second included angle and the first included angle to the number of intervals between two adjacent first grille bars; The difference between the included angles between each pair of adjacent second grid bars and the third air duct wall is the second included angle difference value, and the second included angle differences are equal; the second included angle difference value is equal to the ratio of the difference between the fourth included angle and the third included angle to the number of intervals between two adjacent second grid bars.

6. The indoor unit of the air conditioner according to claim 1, characterized in that, The ratio of the distance between any two adjacent first grille bars to the width of the first side air outlet is 0.05 to 0.07; The ratio of the distance between any two adjacent second grille bars to the width of the second side air outlet is 0.05 to 0.

07.

7. The indoor unit of the air conditioner according to claim 3, characterized in that, Also includes: A volute and a volute tongue for defining the air supply channel, wherein the first sidewall is adjacent to the volute tongue and the second sidewall is adjacent to the volute; A cross-flow fan is installed within the air supply channel; The volute includes a first air duct section, the surface of which defines the air supply channel is a concave first arc-shaped surface, the front end of which is connected to the first air duct wall; the front end of which is located obliquely in front of the rear end of which is adjacent to a second reference surface; the second reference surface is a vertical plane extending in the front-back direction and is located at the midpoint between the inlet edge of the first air duct wall and the inlet edge of the third air duct wall in the lateral direction. The volute includes a second air duct section, the surface of which defines the air supply channel is connected to the third air duct wall via a second arcuate surface. The front end of the second arc-shaped surface is located diagonally in front of the rear end, the rear end of the second arc-shaped surface is adjacent to the second reference surface, and the vertical distance between the rear end of the second arc-shaped surface and the second reference surface is greater than the minimum distance between the second arc-shaped surface and the second reference surface.

8. The indoor unit of the air conditioner according to claim 7, characterized in that, The ratio of the radius of the first arc-shaped surface to the diameter of the cross-flow impeller is 0.63 to 0.71, and the central angle of the first arc-shaped surface is 40° to 50°. The radius of the second arc-shaped surface is greater than 4 mm and less than 20 mm, the ratio of the radius of the second arc-shaped surface to the radius of the first arc-shaped surface is 0.20 to 0.25, and the central angle of the second arc-shaped surface is 100° to 110°.

9. The indoor unit of the air conditioner according to claim 7, characterized in that, The inlet end of the front wall of the first side air duct is the first inlet edge, and the inlet end of the front wall of the second side air duct is the second inlet edge; The ratio of the vertical distance between the first inlet edge and the second reference surface to the vertical distance between the second inlet edge and the second reference surface is 1.27 to 1.35; The vertical distance from the first inlet edge to the first air duct wall is the first inlet distance, and the vertical distance from the second inlet edge to the third air duct wall is the second inlet distance; The ratio of the first inlet distance to the width of the first side outlet is 0.65 to 0.91; The ratio of the second inlet distance to the width of the second side outlet is 0.72 to 0.93; The ratio of the first inlet distance to the second inlet distance is 0.91 to 0.

98.

10. The indoor unit of the air conditioner according to claim 9, characterized in that, The inlet end of the rear wall of the first side air duct is the third inlet edge, and the inlet end of the rear wall of the second side air duct is the fourth inlet edge; The ratio of the first inlet distance to the lateral distance from the third inlet edge to the fourth inlet edge is 0.24 to 0.27; The ratio of the vertical distance from the third inlet edge to the second reference surface to the vertical distance from the first inlet edge to the second reference surface is 0.7 to 0.75; The ratio of the vertical distance from the fourth inlet edge to the second reference surface to the vertical distance from the second inlet edge to the second reference surface is 0.98 to 1.02.

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