A wall-mounted air conditioner indoor unit

Abstract

The application provides a kind of indoor unit of wall-mounted air conditioner, including shell, heat exchange fan, splitter plate and volute;The shell is provided with air inlet, including the upper air outlet of front top, the lower air outlet of bottom.The splitter plate can make the air blown to it flow along upward and downward direction;The volute has heat exchange air duct inside, and the volute includes front volute tongue, upper flow guide structure, lower flow guide structure, the front volute tongue includes the first surface that is inclined upward and the second surface that is inclined downward, and the first surface and the second surface form air outlet end;The upper flow guide structure is located above the front volute tongue, and forms upper air duct with the splitter plate, which is communicated with the upper air outlet, can guide the airflow entering the upper air duct to send air outward through the upper air outlet;The lower flow guide structure forms lower air duct with the splitter plate, which is communicated with the lower air outlet, can guide the airflow to send air vertically downward through the lower air outlet, and the surface of the splitter plate is provided with splitter structure, which can make part of the airflow flowing out of air outlet end enter the upper air duct and part of it enter the lower air duct.

Description

Technical Field

[0001] This application relates to the field of wall-mounted air conditioner indoor unit technology, and more particularly to a wall-mounted air conditioner indoor unit. Background Technology

[0002] As people's quality of life improves, their demands for the comfort of using wall-mounted air conditioner indoor units are increasing, with particular attention paid to the comfort of the airflow and the uniformity of temperature distribution.

[0003] However, most wall-mounted air conditioner indoor units on the market still use the traditional single-outlet air outlet mode. The directional bundled airflow formed by a single outlet, even with the angle adjusted by the air guide plate, still cannot completely avoid blowing directly on people. Furthermore, since the single-outlet air outlet mode can only form a unidirectional circulating airflow, the indoor air cannot be fully convected, resulting in low temperature regulation efficiency. In addition, the single outlet cannot adapt to the differences in physical characteristics of cold and hot air. For example, cold air needs to be low-speed and blown upward to reduce the feeling of direct blowing, while hot air needs to be high-speed and blown downward to overcome the natural tendency of hot air to rise. However, the air outlet direction adjustment range of the traditional single outlet is limited, and it cannot meet the comfort needs of different temperature regulation modes. Utility Model Content

[0004] This application discloses a wall-mounted air conditioner indoor unit that can meet the comfort requirements of different temperature control modes.

[0005] To achieve the above objectives, this application discloses a wall-mounted air conditioner indoor unit, comprising:

[0006] The housing has an air inlet and includes:

[0007] The upper air outlet is formed on the top of the front side of the housing;

[0008] The lower air outlet, at least a portion of which is formed at the bottom of the housing;

[0009] A heat exchange fan, when rotating, can drive air through the air inlet into the casing for heat exchange, and drive the airflow after heat exchange to blow into the indoor space through the upper air outlet and the lower air outlet;

[0010] The airflow plate allows the air blown onto it to flow in both upward and downward directions;

[0011] A volute, wherein the volute is disposed within the housing, and a heat exchange air duct is formed within the volute, wherein the air inlet end of the heat exchange air duct is connected to the air inlet, and the air outlet end of the heat exchange air duct is directed toward the diverter plate, the volute comprising;

[0012] The anterior cochlear tongue, comprising:

[0013] The first surface gradually slopes upward in the direction from the rear side to the front side of the housing;

[0014] The second surface gradually slopes downward in the direction from the rear side of the housing to the front side, and the first surface and the second surface form an air outlet.

[0015] An upper airflow guiding structure is located above the front volute and extends toward the upper air outlet. Along the thickness direction of the housing, the upper airflow guiding structure and the splitter plate form an upper airflow duct that communicates with the upper air outlet. The upper airflow guiding structure is configured to guide the airflow entering the upper airflow duct to be sent outward through the upper air outlet.

[0016] The lower airflow guide structure is located below the front volute and extends toward the lower air outlet. Along the thickness direction of the housing, the lower airflow guide structure and the splitter plate form a lower airflow duct that communicates with the lower air outlet. The lower airflow guide structure is configured to guide the airflow vertically downward through the lower air outlet.

[0017] A flow splitting structure is provided on the surface of the flow splitting plate facing the heat exchange duct. The flow splitting structure enables part of the airflow flowing out of the air outlet to enter the upper air duct and the other part to enter the lower air duct.

[0018] The diversion structure includes:

[0019] A first sidewall, facing the upper air duct and located below the first surface, is used to guide airflow into the upper air duct;

[0020] The second sidewall, facing the downdraft duct and located above the second surface, is used to guide airflow into the downdraft duct.

[0021] In this way, the horizontal airflow direction of the upper air outlet is far away from the area where people are directly active, which can reduce the stimulation caused by the airflow blowing directly on the people. Meanwhile, the vertical downward airflow direction of the lower air outlet directs the airflow path directly to the ground or the lower space of the room, avoiding the stimulation caused by the airflow directly impacting the skin and improving the comfort of the people. This takes into account the comfort needs of different temperature control modes.

[0022] This application also provides a wall-mounted air conditioner indoor unit, wherein at least one of the first sidewall and the second sidewall is an arc-shaped wall surface protruding toward the diverter plate.

[0023] In this way, the curved wall can reduce the resistance of airflow when it flows to the upper and lower air ducts at the outlet of the heat exchange air duct, and improve the air volume and heat exchange efficiency in conjunction with the heat exchange fan; it can also be adapted to the front volute tongue (first and second surfaces) to guide the airflow to flow orderly along the splitter plate and suppress turbulence and wall impact noise.

[0024] This application also provides a wall-mounted air conditioner indoor unit, wherein the cross-section of the air distribution structure in the vertical plane is a tapered cross-section, and the apex of the tapered cross-section protrudes horizontally toward the air outlet.

[0025] In this way, the two side walls of the conical cross-section (i.e., the first and second side walls respectively) present symmetrical or gradually changing inclination angles, providing a smoother turning path for the airflow that is split into upper and lower flows. This allows the upward airflow to gradually deflect to the horizontal direction along the inclination angle of the first side wall and enter the upwind channel, while the downward airflow gradually turns to the vertical direction along the inclination angle of the second side wall and enters the downwind channel. This reduces the turbulence and energy loss caused by the sudden turning of the airflow, making the splitting process smoother.

[0026] This application also provides a wall-mounted air conditioner indoor unit, wherein the vertex of the tapered cross-section is located above the angle bisector between the first surface and the second surface.

[0027] In this way, by setting the vertex of the conical cross section above the angle bisector between the first and second surfaces, the first sidewall of the diversion structure is closer to the first surface, making the channel for the incoming airflow to enter the upwind duct smaller. This allows more airflow to be directly received by the second sidewall and guided into the downwind duct, thus enabling more airflow to flow into the downwind duct.

[0028] This application also provides a wall-mounted air conditioner indoor unit, wherein the vertical distance between the vertex of the conical cross section and the angle bisector between the first surface and the second surface is L1, wherein L1≥2mm and L1≤10mm;

[0029] The vertical distance between the vertex of the conical section and the first face is L2, and the vertical distance between the vertex of the conical section and the second face is L3, wherein L3 / L2≥1.3 and L3 / L2≤1.6.

[0030] In this way, while ensuring that the airflow into the upwind duct is less than the airflow into the downwind duct, it avoids the situation where the difference between the airflow into the upwind duct and the airflow into the downwind duct is too large, which could lead to insufficient temperature control in some areas.

[0031] This application also provides a wall-mounted air conditioner indoor unit, the indoor unit further comprising:

[0032] A heat exchange fan is disposed inside the volute. The shortest vertical distance between the impeller of the heat exchange fan and the apex of the conical section is L4, wherein L4 ≥ 90 mm and L4 ≤ 102 mm.

[0033] In this way, when the distance between the impeller and the apex of the conical section is appropriate, the conical section can fully exert its guiding effect and avoid the airflow generated by the impeller rotation from interfering with the split airflow near the conical structure, thereby reducing the noise generated during the operation of the indoor unit.

[0034] This application also provides a wall-mounted air conditioner indoor unit, wherein the vertical distance between the vertex of the conical cross section and the plane of the diverter plate is L5, wherein L5≥5mm and L5≤15mm.

[0035] This ensures that the distance between the cone apex and the splitter is appropriate, thus avoiding cut-off and ensuring that the airflow can smoothly transition to the guide path of the splitter after being split from the apex, reducing turbulence and drag.

[0036] This application also provides a wall-mounted air conditioner indoor unit, wherein the length of the bottom edge of the tapered cross-section is L6, and the relationship between the length of the bottom edge of the tapered cross-section L6 and the vertical distance L5 between the vertex of the tapered cross-section and the plane where the diverter plate is located satisfies: L6 / L5≥2.

[0037] This design results in smaller inclination angles for the first and second sidewalls. The gentle slope of the sidewalls retains the basic guiding function for airflow (avoiding irregular diffusion) while providing sufficient lateral diffusion space. As the airflow flows within the conical cross-section, it slowly converges towards the apex along the sidewalls and naturally diffuses to both sides. When it reaches the splitter plate, it can more evenly cover the guiding area, facilitating the splitter plate to accurately distribute the airflow to the upper and lower ducts. Furthermore, the gentle slope makes the airflow velocity change smoothly, resulting in weaker impact force when reaching the apex and the splitter plate, reducing turbulence and impact losses, and making the air pressure more stable. At the same time, the friction and collision between the airflow and the sidewalls and splitter plate are reduced, lowering operating noise and improving the user experience.

[0038] This application also provides a wall-mounted air conditioner indoor unit, wherein the first side wall and the second side wall are both arc-shaped wall surfaces protruding toward the volute.

[0039] In this way, the airflow can flow smoothly along the smooth curved surface, reducing the direct impact of the airflow on the first and second sidewalls, while suppressing the generation of eddies, thereby effectively reducing wind resistance and improving airflow efficiency. Furthermore, the reduction of airflow turbulence and eddy impact can also reduce turbulence noise and structural vibration noise, thereby reducing wind noise during air conditioning operation.

[0040] This application also provides a wall-mounted air conditioner indoor unit, wherein the upper air guide structure is connected to the first surface, the surface of the upper air guide structure facing the diverter plate is an arc-shaped surface, and a deflecting air guide part is provided at the end of the arc-shaped surface near the upper air outlet. The deflecting air guide part can guide the upward airflow in the upper air duct to flow in the horizontal direction.

[0041] Thus, the curved surface provides a smooth transition path for airflow, allowing the airflow to naturally conform to the curved surface as it flows upward, avoiding boundary layer separation caused by abrupt surface changes. The deflecting guide can turn the upward airflow into horizontal airflow through specific angle or curved surface design, avoiding impact noise caused by the airflow impacting the duct wall due to inertia when turning.

[0042] This application also provides a wall-mounted air conditioner indoor unit, wherein the lower airflow guide structure is connected to the second surface, the surface of the lower airflow guide structure facing the splitter plate has an arc transition with the second surface, and the included angle between the surface of the lower airflow guide structure facing the splitter plate and the second surface is γ, wherein γ > 90°.

[0043] In this way, the airflow direction can be precisely controlled to ensure that it flows stably along a vertical downward path, avoiding deviation, diffusion or backflow of the airflow during the downward process. This ensures that the air supply direction of the lower air outlet meets expectations, improving the directionality and effectiveness of the air supply. Furthermore, the smooth arc transition reduces the impact or friction between the airflow and the wall of the lower air duct, further reducing low-frequency impact noise and high-frequency friction noise. While achieving low-noise operation of the lower air duct, it maintains the uniformity and stability of the air volume. Attached Figure Description

[0044] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0045] Figure 1 This is a front view of the wall-mounted air conditioner indoor unit provided in the embodiment of this application;

[0046] Figure 2 This is a schematic diagram of the indoor unit provided in an embodiment of this application;

[0047] Figure 3 This is a schematic diagram of the housing provided in an embodiment of this application;

[0048] Figure 4 This is a schematic diagram of the indoor unit provided in an embodiment of this application from another perspective;

[0049] Figure 5 This is an exploded view of the indoor unit provided in the embodiments of this application;

[0050] Figure 6 This is a schematic diagram of the splitter provided in an embodiment of this application;

[0051] Figure 7 This is a schematic diagram of the volute provided in an embodiment of this application;

[0052] Figure 8 This is a schematic diagram of the volute provided in an embodiment of this application from another perspective;

[0053] Figure 9 yes Figure 1 Sectional view at PP;

[0054] Figure 10 yes Figure 9 A schematic diagram of the middle structure with the front panel and splitter removed;

[0055] Figure 11 This is a schematic diagram of the upper flow guide structure provided in the embodiments of this application;

[0056] Figure 12 yes Figure 9 A simplified schematic diagram of the structure.

[0057] Figure 13 yes Figure 9 A simplified schematic diagram of the structure.

[0058] Figure 14 yes Figure 13 Enlarged view of point A in the middle;

[0059] Figure 15 This is a cross-sectional view of the PP section of the indoor unit provided in another embodiment of this application.

[0060] Explanation of main figure symbols

[0061] 1-Wall-mounted air conditioner indoor unit;

[0062] 10-Indoor unit;

[0063] 11-Casing; 11a-Front panel; 11b-Base plate;

[0064] 12 - Air inlet;

[0065] 13- Top air outlet;

[0066] 14-Lower air outlet;

[0067] 15-Diverter plate; 15a-Diverter structure; 15b-First sidewall; 15c-Second sidewall;

[0068] 100-volute;

[0069] 110 - Heat exchange air duct; 1101 - Air inlet; 1102 - Air outlet;

[0070] 120 - Anterior cochlear tongue; 1201 - First surface; 1202 - Second surface;

[0071] 130 - Upper guide structure; 130a - Diverting guide section;

[0072] 140 - Upwind;

[0073] 150-lower flow guide structure;

[0074] 160-Downwind duct;

[0075] 170 - Heat exchange fan. Detailed Implementation

[0076] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0077] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0078] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0079] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; 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, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0080] Furthermore, the terms "upper" and "lower," etc., are primarily used to distinguish different devices, components, or parts whose specific types and structures may be the same or different, and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "multiple" means two or more.

[0081] As mentioned in the background section, most wall-mounted air conditioner indoor units on the market still use the traditional single-outlet air outlet mode. The directional bundled airflow formed by a single outlet, even with the angle adjusted by the air guide plate, still cannot completely avoid blowing directly on the human body. Furthermore, since the single-outlet air outlet mode can only form a unidirectional circulating airflow, the indoor air cannot be fully convected, resulting in low temperature regulation efficiency. In addition, the single outlet cannot adapt to the differences in physical characteristics of cold and hot air. For example, cold air requires low wind speed and upward airflow to reduce the feeling of direct blowing, while hot air requires high wind speed and downward airflow to overcome the natural tendency of hot air to rise. However, the airflow direction adjustment range of the traditional single outlet is limited, and it cannot meet the comfort needs of different temperature regulation modes.

[0082] To address the aforementioned issues, this application provides a wall-mounted air conditioner indoor unit. The horizontal airflow direction of the upper air outlet is far from the area where people are directly active, which can reduce the irritation caused by airflow blowing directly on people. Meanwhile, the vertical downward airflow direction of the lower air outlet directs the airflow path directly to the ground or the lower part of the room, avoiding the irritation caused by airflow directly impacting the skin and improving human comfort. This approach caters to the comfort needs of different temperature control modes.

[0083] The following will describe specific embodiments and appendices. Figure 1-15 The technical solution of the wall-mounted air conditioner indoor unit of this application is further explained.

[0084] like Figure 1 and Figure 2 As shown, the indoor unit 1 of the wall-mounted air conditioner may include a housing 11, on which an air inlet 12 is provided. The air inlet 12 is generally located at the top of the housing 11.

[0085] like Figure 3 As shown, the housing 11 includes an upper air outlet 13, which is formed on the top of the front side of the housing 11.

[0086] like Figure 4 As shown, the housing 11 includes a lower air outlet 14, at least a portion of which is formed at the bottom of the housing 11.

[0087] like Figures 5 to 9 As shown, the indoor unit 1 of the wall-mounted air conditioner may also include a heat exchange fan 170. When the heat exchange fan 170 rotates, it can drive air through the air inlet 12 into the casing 11 for heat exchange, and drive the airflow after heat exchange to blow into the indoor space through the upper air outlet 13 and the lower air outlet 14.

[0088] like Figure 5 and Figure 6 As shown, the indoor unit 1 of the wall-mounted air conditioner may also include a diverter plate 15, which allows the air blown onto the diverter plate 15 to flow in the upward and downward directions.

[0089] like Figures 7 to 10As shown, the indoor unit 1 of the wall-mounted air conditioner may further include a volute 100, which is disposed inside the casing 11. A heat exchange air duct 110 is formed inside the volute 100. The air inlet 1101 of the heat exchange air duct 110 is connected to the air inlet 12, and the air outlet 1102 of the heat exchange air duct 110 is directed towards the diffuser plate 15. In order to ensure that the airflow in the heat exchange air duct 110 can be delivered to the air outlet 1102, the diameter of the heat exchange fan 170 is generally required to be larger than the diameter of the air outlet 1102.

[0090] like Figures 7 to 10 As shown, the volute 100 may include a front volute tongue 120, which is disposed on the side of the air outlet 1102 of the volute 100 near the upper air outlet 13. Common shapes of the front volute tongue 120 include arc (such as a slightly convex arc) and straight shape. It is used to organize the airflow at the air outlet 1102 of the volute 100, avoid airflow turbulence, reduce backflow between the impeller and the airflow, reduce wind noise, and ensure efficient airflow guidance to the air outlet 1102. In this embodiment, the front volute tongue 120 may be a V-shaped arc volute tongue.

[0091] like Figure 10 As shown, the front volute tongue 120 may include a first surface 1201, which gradually slopes upward in the direction from the rear side of the housing 11 to the front side.

[0092] like Figure 10 As shown, the front volute 120 may also include a second surface 1202, which gradually slopes downward in the direction from the rear side of the housing 11 to the front side, and the first surface 1201 and the second surface 1202 form the air outlet 1102.

[0093] like Figures 8 to 10 As shown, the volute 100 may further include an upper airflow guide structure 130, which is located above the front volute tongue 120 and extends toward the upper air outlet 13. Along the thickness direction of the housing 11, the upper airflow guide structure 130 and the splitter plate 15 form an upper airflow duct 140 communicating with the upper air outlet 13. The upper airflow guide structure 130 is configured to guide the airflow entering the upper airflow duct 140 to be delivered outward through the upper air outlet 13. The upper airflow guide structure 130 may be a curved panel or a folded airflow guide plate that smoothly connects to the front volute tongue 120. The curved panel may extend smoothly along the thickness direction of the housing 11 to guide the airflow to turn gently; the folded airflow guide plate may precisely control the airflow direction through angle design. Both can cooperate with the splitter plate 15 to form the upper airflow duct 140 and achieve horizontal airflow.

[0094] like Figure 9 and Figure 10As shown, the volute 100 may further include a lower airflow guide structure 150. The lower airflow guide structure 150 is located below the front volute tongue 120 and extends toward the lower air outlet 14. Along the thickness direction of the housing 11, the lower airflow guide structure 150 and the splitter plate 15 form a lower air duct 160 communicating with the lower air outlet 14. The lower airflow guide structure 150 is configured to guide the airflow vertically downward through the lower air outlet 14. The lower airflow guide structure 150 can be an inclined arc plate or a stepped straight plate. The inclined arc plate is smoothly connected to the front volute tongue 120, and the curved surface extends downward to guide the airflow to turn naturally along the arc surface. The stepped straight plate is spliced ​​with two straight surfaces at different angles, first receiving the airflow and then guiding it, ensuring that the airflow is sent vertically downward through the lower air outlet 14.

[0095] like Figure 9 As shown, the surface of the diversion plate 15 facing the heat exchange duct 110 is provided with a diversion structure 15a. The diversion structure 15a enables part of the airflow flowing out of the outlet 1102 to enter the upper air duct 140 and the other part to enter the lower air duct 160.

[0096] After the indoor unit 1 of the wall-mounted air conditioner is turned on, the air first enters from the air inlet 12 of the casing 11, and after being gathered and pressurized by the heat exchange air duct 110 in the volute 100, it flows out from the air outlet 1102 towards the front panel 11a. Under the action of the diversion structure 15a on the diversion plate 15, the airflow is divided into upper and lower airflows. The upper part of the airflow enters the upper air duct 140 formed by the upper guide structure 130 and the diversion plate 15, and after being guided by the upper guide structure 130, it is sent out horizontally from the upper air outlet 13 at the top of the front panel 11a. The lower part of the airflow enters the lower air duct 160 formed by the lower guide structure 150 and the diversion plate 15, and is finally sent out vertically downward from the lower air outlet 14 of the bottom plate 11b.

[0097] Thus, during cooling, the density of the cold air delivered by the indoor unit 1 of the wall-mounted air conditioner is greater than that of the indoor hot air. At this time, the air is directed out through the upper air outlet 13 (for example, by opening the air guide plate at the upper air outlet 13 and closing the air guide plate at the lower air outlet 14). After the cold air is delivered horizontally from a high position, it can naturally diffuse downwards by its own gravity, first covering the hot air area in the upper part of the room, and then gradually sinking to the whole room. In addition, the high-speed airflow of the upper air outlet 13 can push the cold air to the far part of the room, reducing local overcooling. Furthermore, the horizontal airflow is kept away from the middle and lower parts of the human body, avoiding discomfort caused by cold air blowing directly on the torso and legs.

[0098] When heating, hot air is less dense than cold air and tends to rise. In this case, the air is directed out through the lower air outlet 14 (for example, close the air guide plate at the upper air outlet 13 and open the air guide plate at the lower air outlet 14). After the hot air is sent out vertically from the lower position, it will spread along the ground first and then slowly rise with its own buoyancy, gradually warming the whole room. This can effectively prevent air from accumulating and stagnating in the upper part of the room, which would result in an unsatisfactory indoor heating effect.

[0099] To quickly adjust the indoor temperature, both the upper air outlet 13 and the lower air outlet 14 can be opened simultaneously (for example, the air guide plate at the upper air outlet 13 and the air guide plate at the lower air outlet 14 can be opened at the same time). Since the upper air outlet 13 delivers air outward, it can directly deliver the airflow to the upper area of ​​the room (such as near the ceiling) and push the upper air to diffuse to the distance. Meanwhile, the lower air outlet 14 delivers air vertically downward, focusing on the lower space of the room (such as the ground and the area at the height of human activity). This allows the airflow to spread along the ground or sink downward, covering areas such as sofas and beds where temperature dead zones are likely to form. Therefore, three-dimensional airflow circulation can be achieved, reducing temperature stratification at different heights in the room and allowing hot and cold air to mix more quickly and evenly, thereby quickly achieving balanced coverage of the target temperature.

[0100] Furthermore, from the perspective of human comfort, the horizontal airflow direction of the upper air outlet 13 is far away from the areas where the human body directly moves (such as the head and shoulders when standing or sitting), which can reduce the stimulation caused by the airflow blowing directly on the human body. For example, when cooling in summer, the horizontally delivered cold air first diffuses in the upper part of the room and then naturally sinks, avoiding the discomfort caused by the cold air blowing directly on the head. When heating in winter, the horizontally delivered hot air can first cover the upper part of the room and then gradually flow downwards, making up for the heat loss of the hot air in the lower air outlet 14 during the rising process. The vertical downward airflow direction of the lower air outlet 14 makes the airflow path directly point to the ground or the lower space of the room, avoiding the stimulation caused by the airflow directly impacting the human skin (such as muscle contraction caused by cold air in summer and dry skin caused by hot air in winter), thus improving human comfort.

[0101] In some possible embodiments, such as Figure 6 As shown, the diversion structure 15a includes a first sidewall 15b, which faces the updraft duct 140 and is located below the first surface 1201, for guiding airflow into the updraft duct 140.

[0102] The first sidewall 15b facing the upper airflow duct 140 will guide the airflow surging from the air outlet 1102 into the upper airflow duct 140 between the upper guide structure 130 and the splitter plate 15, and finally, under the guidance of the upper guide structure 130, the airflow will be sent outward from the upper air outlet 13 at the top of the front panel 11a.

[0103] The diversion structure 15a also includes a second sidewall 15c, which faces the downdraft 160 and is located above the second surface 1202, for guiding airflow into the downdraft 160.

[0104] The second sidewall 15c facing the downdraft duct 160 guides another part of the airflow into the downdraft duct 160 between the downdraft guide structure 150 and the splitter plate 15. After being guided by the downdraft guide structure 150, the airflow is sent vertically downward from the downdraft outlet 14 of the base plate 11b.

[0105] Thus, the directional guidance of the first sidewall 15b and the second sidewall 15c can clearly divide the paths of the upper and lower airflows, avoiding "cross-flow mixing" when the airflow is split (such as the upper airflow mixing into the lower airflow 160 and the lower airflow entering the upper airflow 140), thereby ensuring the stability of the airflow ratio between the upper air outlet 13 and the lower air outlet 14, and ensuring that the functions of the upper airflow 140 and the lower airflow 160 do not interfere with each other.

[0106] In some possible embodiments, at least one of the first sidewall 15b and the second sidewall 15c is an arcuate wall surface protruding toward the diverter plate 15.

[0107] In this way, the curved wall surface can reduce the airflow resistance when the airflow flows to the upper airflow 140 and the lower airflow 160 at the air outlet 1102 of the heat exchange airflow duct 110, and improve the airflow and heat exchange efficiency in conjunction with the heat exchange fan 170; it can also be adapted to the front volute tongue 120 (first surface 1201, second surface 1202) to guide the airflow to flow orderly along the diverter plate 15 and suppress turbulence and wall impact noise.

[0108] In some possible embodiments, such as Figure 6 and Figure 9 As shown, the cross-section of the diversion structure 15a in the vertical plane is a tapered cross-section, and the apex of the tapered cross-section protrudes horizontally toward the air outlet 1102.

[0109] Thus, the two side walls of the conical cross-section (corresponding to the first side wall 15b and the second side wall 15c) present symmetrical or gradually changing tilt angles, providing a smoother turning path for the upward and downward split airflows. This allows the upward airflow to gradually deflect to the horizontal direction along the tilt angle of the first side wall 15b and enter the upwind duct 140, while the downward airflow gradually turns to the vertical direction along the tilt angle of the second side wall 15c and enters the downwind duct 160. This reduces turbulence and energy loss caused by sudden airflow changes, making the splitting process smoother.

[0110] In some possible embodiments, such as Figure 10 and Figure 12 As shown, the vertex of the tapered section is located above the angle bisector between the first face 1201 and the second face 1202.

[0111] Thus, by setting the apex of the conical cross-section above the angle bisector between the first surface 1201 and the second surface 1202, the second sidewall 15c (facing the downdraft duct 160) of the diversion structure 15a is closer to the second surface 1202, and the guiding angle formed with the second surface 1202 is smaller and steeper. When the airflow flows out from the outlet 1102, the steep second sidewall 15c has a stronger interception and guiding effect on the airflow, so that more airflow will be directly received by the second sidewall 15c and guided into the downdraft duct 160. Since the first sidewall 15b has a gentler angle, the proportion of airflow guided to the updraft duct 140 is relatively reduced, thereby achieving more airflow to the downdraft duct 160. Since the lower part of the room is the core area of ​​human activity, a larger airflow is needed to quickly regulate the temperature. Therefore, more airflow to the downdraft duct 160 can ensure a rapid temperature response in the ground and near-human areas.

[0112] In some possible embodiments, such as Figure 13 As shown, the perpendicular distance between the vertex of the conical cross-section and the angle bisector between the first surface 1201 and the second surface 1202 is L1, where L1 ≥ 2mm and L1 ≤ 10mm. L1 directly reflects the degree of offset of the vertex relative to the symmetrical position of the upper second surface 1202. The larger L1 is, the higher the vertex is, and the stronger its guiding effect on the lower air duct 160. Essentially, L1 achieves macroscopic control of the airflow distribution ratio between the upper air duct 140 and the lower air duct 160 by adjusting the vertical position of the vertex.

[0113] If L1 < 2mm, the vertex is too close to the angle bisector, which means that the vertex position is too low. The separation of the airflow between the first surface 1201 and the second surface 1202 at the split point is not clear enough. Some of the airflow that should have entered the upper airflow duct 140 may mistakenly enter the lower airflow duct 160 due to insufficient vertex offset, causing the airflow in the upper and lower airflow ducts 160 to mix and form local turbulence, increasing wind resistance and noise, and reducing the accuracy of air supply.

[0114] If L1 > 10mm, the vertex is too far from the angle bisector, which means that the vertex position is too high. This may result in the distance between the first surface 1201 and the front volute 120 being too small, which will lead to insufficient airflow into the upper air duct 140. This will not meet the requirement of the upper air outlet 13 to horizontally supply air to cover the upper area of ​​the room, resulting in insufficient cooling or ventilation in the upper part of the room.

[0115] In this embodiment, L1≥2mm and L1≤10mm, ensuring that the distance between the vertex and the angle bisector is moderate. This achieves a balance where the airflow into the upper duct 140 is less than that into the lower duct 160, while avoiding an excessive difference between the two airflows. For example, it stably achieves 40% airflow in the upper duct 140 and 60% airflow in the lower duct 160. This ensures that the lower duct 160 has sufficient airflow to meet the need for warm air to descend to the human activity area during heating, while the upper duct 140 retains enough airflow to cover the upper part of the room with horizontal airflow during cooling. This avoids insufficient temperature control in some areas due to an imbalance in the proportions. Furthermore, the stable airflow ratio reduces mutual interference between the upper and lower airflows, maximizing the air delivery efficiency of each duct and making the overall room temperature regulation more uniform and efficient, thus meeting the air delivery needs of different areas in actual use scenarios.

[0116] The vertical distance between the vertex of the conical section and the first surface 1201 is L2, and the vertical distance between the vertex of the conical section and the second surface 1202 is L3, where L3 / L2 ≥ 1.3 and L3 / L2 ≤ 1.6. L2 can be understood as the equivalent diameter reference of the air inlet 12 of the upper duct 140. Its value reflects the width of the inlet of the upper duct 140. The larger L2 is, the wider the air inlet 12 of the upper duct 140 is, and the more airflow it can accommodate. L3 corresponds to the equivalent diameter reference of the air inlet 12 of the lower duct 160. The larger L3 is, the wider the air inlet 12 of the lower duct 160 is, and the stronger its ability to receive airflow.

[0117] If L3 / L2 > 1.6, it means that the equivalent air inlet diameter of the downdraft 160 is too large relative to the updraft 140. In this case, the downdraft 160 will absorb too much airflow due to its wide inlet, resulting in an excessively high air volume ratio in the downdraft 160. Meanwhile, the air volume of the updraft 140 is excessively compressed due to its small equivalent inlet diameter, causing a serious imbalance between the updraft and downdraft air volumes.

[0118] If L3 / L2 < 1.3, it means that the equivalent air inlet diameter 12 of the downdraft duct 160 is relatively smaller than that of the updraft duct 140. The downdraft duct 160 has insufficient capacity to receive airflow, and the air volume ratio is difficult to meet the design expectations. Meanwhile, the air volume ratio of the updraft duct 140 is too high. This imbalance will lead to a weakening of the downward sinking ability of warm air during heating, and the lower part of the room will heat up slowly, failing to meet the heating demand.

[0119] In this embodiment, 1.3 ≤ L3 / L2 ≤ 1.6, making the equivalent air inlet diameter of the lower air duct 160 1.3 to 1.6 times that of the upper air duct 140. This allows the lower air duct 160, with its reasonably larger equivalent diameter, to stably absorb more airflow, meeting the need for warm air to descend to the human activity area during heating. The upper air duct 140, on the other hand, retains sufficient airflow to ensure horizontal air supply covering the upper part of the room during cooling, achieving balanced temperature regulation throughout the space and optimizing both air supply efficiency and human comfort.

[0120] Preferably, L3 / L2 = 1.5.

[0121] In some possible embodiments, such as Figure 13 As shown, the wall-mounted air conditioner indoor unit 1 may further include a heat exchange fan 170, which is disposed within the volute 100. The shortest vertical distance between the impeller of the heat exchange fan 170 and the apex of the conical cross-section is L4, wherein L4 ≥ 90 mm and L4 ≤ 102 mm. The heat exchange fan 170 is the core component in the wall-mounted air conditioner indoor unit 1 responsible for driving airflow. Its main function is to accelerate the heat exchange between the air and the heat exchanger through the rotation of the impeller, and to deliver the processed air (cold or hot air) to the indoor space.

[0122] If L4 > 102mm, the distance between the impeller and the apex of the conical section will be too far, causing the airflow to diffuse before reaching the split structure 15a, resulting in a decrease in airflow velocity, weakening of the wind pressure generated by the impeller, and insufficient air delivery power.

[0123] If L4 < 90mm, the impeller will be too close to the apex of the conical section. The airflow generated by the impeller rotation will interfere with the split airflow near the conical structure, forming local turbulence, which will increase wind resistance and noise.

[0124] In this embodiment, 90mm≤L4≤102mm is used so that when the distance between the impeller and the apex of the conical section is moderate, the conical section can fully exert its guiding effect and avoid the airflow generated by the impeller rotation from interfering with the split airflow near the conical structure, thereby reducing the noise generated during the operation of the indoor unit 1 of the wall-mounted air conditioner.

[0125] In some possible embodiments, such as Figure 14 As shown, the vertical distance between the vertex of the conical section and the plane of the splitter plate 15 is L5, where L5 ≥ 5 mm and L5 ≤ 15 mm. The vertex of the conical section can be understood as the initial splitting point of the airflow in the upper and lower air ducts 160, while the splitter plate 15 is used to further guide and distribute the airflow after it has been split at the vertex (the airflow in the lower air duct 160 is downward and the airflow in the upper air duct 140 is upward).

[0126] If L5 < 5mm, it means that the distance between the cone apex and the splitter plate 15 is too close. The guiding effect of the splitter plate 15 on the airflow will intervene too early, which may overlap with the splitting effect of the cone apex, resulting in airflow compression.

[0127] If L5 > 15mm, it means that the distance between the cone apex and the splitter plate 15 is too far. The airflow after being split at the cone apex may diffuse or become turbulent before reaching the splitter plate 15, and the guiding effect of the flow plate will be weakened.

[0128] In this embodiment, 5mm≤L5≤15mm is used to make the distance between the cone apex and the splitter plate 15 moderate, thereby avoiding cut-off and ensuring that the airflow can smoothly transition to the guide path of the splitter plate 15 after being split from the apex, reducing turbulence and resistance.

[0129] In some possible embodiments, such as Figure 14 As shown, the length of the base of the conical cross-section is L6. The relationship between the length of the base L6 and the vertical distance L5 between the vertex of the conical cross-section and the plane containing the diverter plate 15 satisfies: L6 / L5≥2. The ratio of the base length L6 to the vertical distance L5 essentially reflects the inclination angle of the two side walls; the larger the ratio, the gentler the inclination of the side walls; the smaller the ratio, the steeper the inclination of the side walls.

[0130] If L6 / L5 < 2, the first sidewall 15b and the second sidewall 15c have a large inclination angle. The airflow is rapidly compressed within the conical cross-section and converges towards the apex. The lack of lateral diffusion space will cause the airflow to be too concentrated when it reaches the splitter plate 15. It will be difficult to flexibly distribute the airflow to the upper and lower air ducts 160 according to the guidance of the splitter plate 15. Furthermore, the steep sidewalls will accelerate the airflow towards the apex, causing the airflow velocity to increase sharply near the apex. This will create a "frontal impact" with the splitter plate 15, and some of the kinetic energy will be converted into turbulent energy, resulting in wind pressure loss and high-frequency noise.

[0131] In this embodiment, L6 / L5≥2 results in a smaller tilt angle for the first sidewall 15b and the second sidewall 15c. The gentle sidewalls retain the basic guiding function for airflow (avoiding irregular diffusion) while providing sufficient lateral diffusion space for the airflow. When the airflow flows within the conical cross-section, it will slowly converge towards the apex along the sidewalls and naturally diffuse to both sides. When it reaches the splitter plate 15, it can more evenly cover its guiding area, making it easier for the splitter plate 15 to accurately distribute the airflow of the upper and lower air ducts 160. The gentle tilt also makes the airflow velocity change smoothly, resulting in weaker impact force when reaching the apex and the splitter plate 15, reducing turbulence and impact losses, and making the air pressure more stable. At the same time, the friction and collision between the airflow and the sidewalls and the splitter plate 15 are reduced, the operating noise is reduced, and the user experience is improved.

[0132] In some possible embodiments, such as Figure 15 As shown, both the first sidewall 15b and the second sidewall 15c are arc-shaped walls that bulge toward the volute 100.

[0133] In this way, the airflow can flow smoothly along the smooth curved surface, reducing the direct impact of the airflow on the first sidewall 15b and the second sidewall 15c, while suppressing the generation of eddies, thereby effectively reducing wind resistance and improving airflow efficiency. Furthermore, the reduction of airflow turbulence and eddy impact can also reduce turbulence noise and structural vibration noise, thereby reducing wind noise during air conditioning operation.

[0134] In some possible embodiments, such as Figure 9 and Figure 12 As shown, the upper guide structure 130 is connected to the first surface 1201. The surface of the upper guide structure 130 facing the diverter plate 15 is an arc-shaped surface. A turning guide part 130a is provided at the end of the arc-shaped surface near the upper air outlet 13. The turning guide part 130a can guide the upward airflow in the upper air duct 140 to flow in the horizontal direction.

[0135] Thus, the curved surface provides a smooth transition path for airflow, allowing the airflow to naturally conform to the curved surface during upward flow, avoiding boundary layer separation caused by abrupt surface changes. When the airflow is guided by the curved surface to the vicinity of the upper air outlet 13, the deflecting guide part 130a can turn the upward airflow into horizontal airflow through a specific angle or curved surface design, avoiding impact noise caused by the airflow impacting the duct wall due to inertia during turning, or airflow loss caused by vortex formation due to excessive turning. It can ensure accurate switching of airflow direction and maintain the stability of airflow, ensuring uniform airflow and smooth airflow at the upper air outlet 13.

[0136] like Figure 9 and Figure 12 As shown, the lower guide structure 150 is connected to the second surface 1202. The surface of the lower guide structure 150 facing the splitter plate 15 and the second surface 1202 have an arc transition. The included angle between the surface of the lower guide structure 150 facing the splitter plate 15 and the second surface is γ, where γ > 90°.

[0137] In this way, the airflow direction can be precisely controlled to ensure that it flows stably along a vertically downward path, avoiding deviation, diffusion or backflow of the airflow during the downward process. This ensures that the air supply direction of the lower air outlet 14 meets expectations, improving the directionality and effectiveness of the air supply. Furthermore, the smooth arc transition reduces the impact or friction between the airflow and the wall of the lower air duct 160, further reducing low-frequency impact noise and high-frequency friction noise. While achieving low-noise operation of the lower air duct 160, it maintains the uniformity and stability of the air volume.

[0138] In some possible embodiments, such as Figure 9 and Figure 12 As shown, along the vertical direction, the height of the diffuser 15 is h2, and the height of the housing 11 is h3, where (h1+h2) / h3≥0.92 and (h1+h2) / h3≤0.97. The ratio (h1+h2) / h3 reflects the proportion of the sum of the width (h1) of the upper air duct 140 outlet and the height (h2) of the diffuser 15 in the overall height (h3) of the housing 11.

[0139] In this embodiment, (h1+h2) / h3≥0.92 and (h1+h2) / h3≤0.97, which means that the total vertical dimension of the air outlet of the upper air duct 140 and the diverter plate 15 is almost close to the full height of the housing 11 (leaving only a 3%-8% margin). Since h1 is the vertical air outlet width of the upper air duct 140, which is directly related to the output range of the upper airflow, and h2 is the height of the diverter plate 15, as a key structure that separates the upper and lower air ducts 160 and guides the airflow direction, its height determines the guiding ability of the overall airflow. Therefore, the sum of the two is close to the full height of the housing 11 (h3), which means that most of the space from the top to near the bottom of the housing 11 is covered by the air outlet area of ​​the upper air duct 140 and the guiding range of the diverter plate 15, avoiding the occurrence of "ineffective height space" (such as redundant gaps at the top or bottom) in the housing 11.

[0140] In some possible embodiments, the relationship between the vertical width h1 of the upper air outlet 13 and the height h2 of the diverter plate 15 satisfies: h1 / h2≥0.18 and h1 / h2≤0.22.

[0141] If h1 / h2 > 0.22, meaning h1 is relatively large, it indicates that the relative height h2 of the splitter plate 15 is too small, which reduces its ability to "block and guide" airflow. Some airflow that should flow to other ducts (such as the lower duct 160) may cross the splitter plate 15 and mix into the upper air outlet 13, causing the upper and lower airflows to interfere with each other and resulting in chaotic airflow direction (such as the upward airflow mixing with the downward airflow, or vice versa), affecting the accuracy of airflow. Furthermore, if the width h1 of the upper air outlet 13 is too large, the airflow velocity through the upper air outlet 13 will decrease under the same airflow volume. Insufficient velocity will lead to a shortened airflow distance, making it difficult for the airflow to reach the preset area, thus affecting the coverage and efficiency of the airflow.

[0142] If h1 / h2 < 0.18, meaning h1 is relatively small, the flow cross-section of the airflow through the upper air outlet 13 will decrease, leading to a sudden increase in local resistance and affecting the airflow volume of the upper air outlet. Furthermore, the reduced flow cross-section will cause the airflow velocity of the upper air outlet 13 to increase. If it blows directly onto the human body, it will produce a strong "direct blowing sensation" (especially cold air in summer), causing discomfort. At the same time, the friction between the high-speed airflow and the edge of the air outlet, as well as the increased turbulence intensity inside the airflow, will generate high-frequency noise, affecting the user experience.

[0143] Based on this, this embodiment ensures that h1 / h2≥0.18 and h1 / h2≤0.22, which not only ensures that the diverter plate 15 can effectively divert airflow, but also ensures that the flow rate, air volume and noise of the upper air outlet 13 are within a reasonable range.

[0144] Preferably, h1 / h2 = 0.2.

[0145] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the wall-mounted air conditioner indoor unit of this application, and are not intended to limit it. Although the wall-mounted air conditioner indoor unit of this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A wall-mounted air conditioner indoor unit, characterized in that, include: The housing has an air inlet and includes: The upper air outlet is formed on the top of the front side of the housing; The lower air outlet, at least a portion of which is formed at the bottom of the housing; A heat exchange fan, when rotating, can drive air through the air inlet into the casing for heat exchange, and drive the airflow after heat exchange to blow into the indoor space through the upper air outlet and the lower air outlet; The airflow plate allows the air blown onto it to flow in both upward and downward directions; A volute, wherein the volute is disposed within the housing, and a heat exchange air duct is formed within the volute, wherein the air inlet end of the heat exchange air duct is connected to the air inlet, and the air outlet end of the heat exchange air duct is directed toward the diverter plate, the volute comprising; The anterior cochlear tongue, comprising: The first surface gradually slopes upward in the direction from the rear side to the front side of the housing; The second surface gradually slopes downward in the direction from the rear side of the housing to the front side, and the first surface and the second surface form an air outlet. An upper airflow guiding structure is located above the front volute and extends toward the upper air outlet. Along the thickness direction of the housing, the upper airflow guiding structure and the splitter plate form an upper airflow duct that communicates with the upper air outlet. The upper airflow guiding structure is configured to guide the airflow entering the upper airflow duct to be sent outward through the upper air outlet. The lower airflow guide structure is located below the front volute and extends toward the lower air outlet. Along the thickness direction of the housing, the lower airflow guide structure and the splitter plate form a lower airflow duct that communicates with the lower air outlet. The lower airflow guide structure is configured to guide the airflow vertically downward through the lower air outlet. A flow splitting structure is provided on the surface of the flow splitting plate facing the heat exchange duct. The flow splitting structure enables part of the airflow flowing out of the air outlet to enter the upper air duct and the other part to enter the lower air duct. The diversion structure includes: A first sidewall, facing the upper air duct and located below the first surface, is used to guide airflow into the upper air duct; The second sidewall, facing the downdraft duct and located above the second surface, is used to guide airflow into the downdraft duct.

2. The wall-mounted air conditioner indoor unit according to claim 1, characterized in that, At least one of the first sidewall and the second sidewall is an arc-shaped wall surface that protrudes toward the diverter plate.

3. The wall-mounted air conditioner indoor unit according to claim 2, characterized in that, The flow divider structure has a tapered cross-section in the vertical plane, and the apex of the tapered cross-section protrudes horizontally toward the air outlet. The vertical distance between the vertex of the tapered section and the plane of the diverter plate is L5, where L5 ≥ 5 mm and L5 ≤ 15 mm.

4. The wall-mounted air conditioner indoor unit according to claim 3, characterized in that, The vertex of the tapered cross section is located above the angle bisector between the first and second faces.

5. The wall-mounted air conditioner indoor unit according to claim 4, characterized in that, The vertical distance between the vertex of the conical section and the first face is L2, and the vertical distance between the vertex of the conical section and the second face is L3, wherein L3 / L2≥1.3 and L3 / L2≤1.

6.

6. The wall-mounted air conditioner indoor unit according to claim 3, characterized in that, The indoor unit also includes: A heat exchange fan is disposed inside the volute. The shortest vertical distance between the impeller of the heat exchange fan and the apex of the conical section is L4, wherein L4 ≥ 90 mm and L4 ≤ 102 mm.

7. The wall-mounted air conditioner indoor unit according to claim 6, characterized in that, The length of the bottom edge of the tapered section is L6, and the relationship between the length of the bottom edge of the tapered section L6 and the vertical distance L5 between the vertex of the tapered section and the plane where the diverter plate is located satisfies: L6 / L5≥2.

8. The wall-mounted air conditioner indoor unit according to claim 1, characterized in that, Both the first and second sidewalls are arc-shaped walls that bulge towards the volute.

9. The wall-mounted air conditioner indoor unit according to any one of claims 1-8, characterized in that, The upper airflow guide structure is connected to the first surface. The surface of the upper airflow guide structure facing the diverter plate is an arc-shaped surface. A deflecting airflow guide is provided at the end of the arc-shaped surface near the upper air outlet. The deflecting airflow guide can guide the upward airflow in the upper air duct to flow in the horizontal direction.

10. The wall-mounted air conditioner indoor unit according to any one of claims 1-8, characterized in that, The lower guide structure is connected to the second surface. The surface of the lower guide structure facing the splitter plate has an arc transition with the second surface. The angle between the surface of the lower guide structure facing the splitter plate and the second surface is γ, where γ > 90°.

Images