Wall-mounted air conditioner indoor unit

Abstract

The application provides a wall-mounted air conditioner indoor unit, which comprises a casing and a flow guide. A first air outlet in the shape of a long strip extending horizontally is formed on the front side of the casing, and an air duct connected with the first air outlet is formed inside the casing. The distance between the upper wall and the lower wall of the air duct near the first air outlet gradually decreases along the airflow direction, forming a tapered section. The flow guide is in the shape of a rod parallel to the length direction of the first air outlet, is arranged in the air duct, and is respectively provided with an air outlet gap with the upper wall and the lower wall. The flow guide guides the airflow blown to the first air outlet to the upper wall and the lower wall, so that the airflow is aggregated to the center of the airflow and flows out of the first air outlet under the guidance of the tapered section of the air duct. The flow guide is swingably arranged on the casing around a center axis outside the flow guide and extending horizontally, so as to adjust the distance from the first air outlet by swinging at different angles. The wall-mounted air conditioner indoor unit has a better long-distance air supply effect, and the air volume and the airflow direction of the aggregated air supply can be adjusted.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of air conditioning technology, and in particular to a wall-mounted air conditioner indoor unit. BACKGROUND

[0002] The existing wall-mounted air conditioner indoor unit usually has a long strip-shaped air outlet at the lower part of the front side of the casing, the air outlet faces the lower front, and a guide vane is arranged at the air outlet to guide the up-down air supply direction.

[0003] On this basis, some existing technologies have made many improvements to the air outlet structure, but due to the constraint of the direction of the air outlet itself, the air supply direction, air supply range and air supply distance of the air conditioner are still greatly limited, affecting the user experience. SUMMARY

[0004] An object of the present application is to overcome the above problems or at least partially solve the above problems, and provide a wall-mounted air conditioner indoor unit capable of aggregating air supply.

[0005] A further object of the present application is to make the air volume and air direction of the aggregated air supply adjustable.

[0006] In particular, the present application provides a wall-mounted air conditioner indoor unit, comprising:

[0007] a casing, a first air supply opening extending transversely in a long strip shape is formed in the front side, and an air duct connected to the first air supply opening is formed inside the casing, the distance between the upper wall and the lower wall of the air duct gradually decreases along the airflow direction near the first air supply opening, forming a tapered section;

[0008] a flow guide member in the shape of a rod parallel to the length direction of the first air supply opening, arranged in the air duct and defining an air outlet gap with the upper wall and the lower wall respectively, and used to guide the airflow blowing towards the first air supply opening to the upper wall and the lower wall, so that the airflow gradually aggregates towards the airflow center and flows out of the first air supply opening under the guidance of the tapered section of the air duct; and

[0009] the flow guide member is configured to be swingably mounted to the casing about a center axis located outside the flow guide member and extending transversely of the casing, so as to adjust the distance from the flow guide member to the first air supply opening by swinging to different positions.

[0010] Optionally, the center axis is located above the upper wall.

[0011] Optionally, the wall-mounted air conditioner indoor unit further comprises:

[0012] a motor mounted above the upper wall, the axis of the motor extending transversely of the casing to form the center axis; and

[0013] A connecting rod, a lower end of which is fixed to the flow guide, and an upper end of which is connected to the motor, so as to drive the flow guide to swing under the driving of the motor.

[0014] Optionally, the cross-sectional profile of the flow guide is in the shape of an olive, having two upper and lower tips, and two convex curved shapes in front and back.

[0015] Optionally, the flow guide is configured to swing to a closed position to close the first air outlet; and

[0016] When the flow guide is in the closed position, the upper tip is located above the lower tip in front or directly above, so that when the flow guide swings backward to open the first air outlet, the upper tip is located above the lower tip in front, so that the rear surface of the flow guide faces upward.

[0017] Optionally, the section of the upper wall for defining the air outlet gap is a curved section with a concave side facing downward, which surrounds the flow guide above the flow guide; and

[0018] The section of the lower wall for defining the air outlet gap is a curved section with a concave side facing upward, which extends from the rear to the front.

[0019] Optionally, the rear end of the curved section is lower than the front end, and the upper wall of the air duct further comprises:

[0020] The inclined section is a straight line extending upward and rearward from the rear end of the curved section with a concave side facing downward of the upper wall;

[0021] The inlet section extends forward and upward from the rear end of the inclined section.

[0022] Optionally, the cross-sectional profile of the flow guide comprises a front arc section and a rear arc section, the top end and the bottom end of which are connected by a rounded transition;

[0023] The radius of the front arc section is R1, the radius of the rear arc section is R2, and the distance between the top end and the bottom end of the flow guide is H, satisfying: 0.5≤R1 / H≤0.8, 0.5≤R2 / H≤0.8.

[0024] Optionally, the bottom wall of the cabinet is provided with a second air outlet which is open downward and connected to the air duct, and the second air outlet is provided with a baffle; and

[0025] The air duct comprises the upper wall, the lower wall and the rear wall, the front end of the upper wall and the front end of the lower wall define the first air outlet, the rear end of the lower wall and the lower end of the rear wall define the second air outlet, and the upper wall and the rear wall define the inlet of the air duct.

[0026] Optionally, the upward surface of the air deflector in the closed state is the air deflection surface, and the downward surface is the non-air deflection surface.

[0027] The rear wall has an inwardly recessed arc-shaped section near the lower end thereof, so that the air flow is guided by the inwardly recessed arc-shaped section to the non-air deflection surface when the air deflector is turned to the state in which the air deflection surface faces the front and upward.

[0028] Optionally, the front section of the air deflector is curved upward when the air deflector is in the closed state, so as to guide the air flow to the outer surface of the lower wall when the air deflector is in the open state.

[0029] In the wall-mounted air conditioner indoor unit of the present application, the air flow guided by the flow guide flows to the upper wall and the lower wall of the air duct and enters the corresponding air outlet gap. Due to the smaller flow cross section of the air outlet gap, the air outlet speed is higher. The high-speed air flow is guided by the tapered section of the air duct and gradually converges to the center of the air flow during the outward flow, forming a convergence effect, so that the wind force is stronger and the air supply distance is farther, meeting the requirements of the wall-mounted air conditioner indoor unit for long-distance air supply and strong air supply. Moreover, the flow guide can swing around a transverse axis located outside the flow guide, so as to adjust the distance of the first air outlet by swinging to different positions, thereby adjusting the air volume of the first air outlet to better match the user's needs.

[0030] Further, in the wall-mounted air conditioner indoor unit of the present application, the central axis of the swing of the flow guide is located above the upper wall of the air duct, which not only has enough space to accommodate the driving device for swinging, but also makes the flow guide have a long enough swing radius, so that the swing range is larger and the adjustment range of the wind direction and the air volume is larger.

[0031] Further, in the wall-mounted air conditioner indoor unit of the present application, when the flow guide swings to the closed position, the upper tip of the flow guide is located above or directly above the lower tip, so that when the flow guide swings backward to open the first air outlet, the upper tip is located above the lower tip, the rear surface of the flow guide faces upward, the angle between the convergent air supply direction and the wind direction of the upstream air duct is smaller, the air flow is more easily turned to the convergent angle, the air resistance is reduced, and the air volume of the convergent air supply is increased.

[0032] Further, the indoor unit of the wall-mounted air conditioner has an "olive-shaped" structure, so that the section of the upper wall of the air duct for defining the air outlet gap is a curved section with the concave side downward, which surrounds the flow guide above the flow guide, and the section of the lower wall of the air duct for defining the air outlet gap is a curved section with the concave side inward, which extends upward from back to front and is located below the flow guide. In this way, when the flow guide swings back and forth to different angular positions, the distance between the flow guide and the upper wall of the air duct and the distance between the flow guide and the lower wall of the air duct change, and the change amplitudes are different, which will cause the air volume ratio of the air outlet gap of the upper wall to the air outlet gap of the lower wall to change, so that the direction of the combined air flow changes, and the air conditioner can adjust the direction of the combined air flow accordingly.

[0033] The above and other objects, advantages and features of the present application will become more apparent from the following detailed description of some embodiments thereof, when taken in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0034] Some embodiments of the present application will now be described, by way of example only, with reference to the accompanying drawings. Identical or similar components or parts are referred to using the same reference numerals throughout the drawings. It is to be understood that the drawings are not necessarily to scale. In the drawings:

[0035] Figure 1 is a structural schematic diagram of the wall-mounted air conditioner indoor unit according to an embodiment of the present application;

[0036] Figure 2 is Figure 1 is a schematic cross-sectional enlarged view of the wall-mounted air conditioner indoor unit shown in

[0037] Figure 3 is Figure 2 is a schematic view of the wall-mounted air conditioner indoor unit shown in after the flow guide swings forward by 7.5°;

[0038] Figure 4 is Figure 1 is a schematic cross-sectional view of the flow guide of the wall-mounted air conditioner indoor unit shown in

[0039] Figure 5 is Figure 2 is a schematic view of the wall-mounted air conditioner indoor unit shown in when the flow guide closes the first air outlet to run the downward air supply mode;

[0040] Figure 6 is Figure 2 is a schematic view of the wall-mounted air conditioner indoor unit shown in when running the maximum air supply mode;

[0041] Figure 7 is a schematic cross-sectional view of the lower wall of the air duct. DETAILED DESCRIPTION

[0042] The following reference Figures 1 to 7 This description refers to a wall-mounted air conditioner indoor unit according to an embodiment of the present invention. The terms "front," "rear," "upper," "lower," "top," "bottom," "inner," "outer," and "lateral," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing the invention and for simplification, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Arrows in the figures indicate the direction of airflow.

[0043] The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," etc., 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, "a plurality of" 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 stated, this indicates that other features are not excluded and may be further included.

[0044] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," and "coupling," etc., 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 invention according to the specific circumstances.

[0045] This invention provides a wall-mounted air conditioner indoor unit. The wall-mounted air conditioner indoor unit is the indoor section of a split-type wall-mounted room air conditioner, used to regulate indoor air, such as cooling / heating, dehumidifying, and introducing fresh air.

[0046] Figure 1 This is a schematic diagram of the structure of a wall-mounted air conditioner indoor unit according to an embodiment of the present invention; Figure 2 yes Figure 1 A schematic enlarged sectional view of the indoor unit of the wall-mounted air conditioner shown. Figure 4 yes Figure 2 The diagram shows a wall-mounted air conditioner indoor unit after the air guide has swung forward 7.5°.

[0047] like Figures 1 to 3 As shown, the wall-mounted air conditioner indoor unit of this embodiment generally includes a housing 10 and an air guide 30.

[0048] The front side of the casing 10 is provided with a first air outlet 11 in the form of a long strip extending in the transverse direction. The casing 10 is in the form of a long strip extending in the horizontal direction for hanging on a wall in a room. The transverse direction of the casing 10, i.e. the length direction thereof, is indicated by x in the drawings. The casing 10 is internally formed with an air duct 15 connected to the first air outlet 11. The casing 10 described in the present embodiment includes a framework for constituting a basic frame of the indoor unit and machine body parts such as a volute and a volute tongue for defining the air duct 15, and is not a pure air conditioner casing. The first air outlet 11 is used for blowing air in the casing 10 to the room to adjust the air in the room. The aforementioned air can be cold air produced by the wall-mounted air conditioner indoor unit in a cooling mode, hot air produced by the wall-mounted air conditioner indoor unit in a heating mode, or fresh air introduced in a fresh air mode, etc. The air duct 15 is gradually tapered at the upper wall 151 (specifically, the ba section thereof) and the lower wall 152 (specifically, the ed section thereof) adjacent to the first air outlet 11, constituting a tapered section of the air duct 15, as shown in Figure 2 In other words, the flow cross section of the air duct 15 gradually decreases along the air flow direction adjacent to the first air outlet 11.

[0049] The flow guide 30 is in the form of a rod parallel to the length direction (x direction) of the first air outlet 11, which is arranged in the air duct 15 and defines air outlet gaps 154, 155 with the upper wall 151 (sa section thereof) and the lower wall 152 (ed section thereof) respectively, and is used for guiding the air flow blown to the first air outlet 11 to the upper wall 151 and the lower wall 152 of the air duct 15, so that the air flow gradually converges to the center of the air flow and flows out of the first air outlet 11 under the guidance of the tapered section of the air duct 15 (defined by the ba section of the upper wall and the ed section of the lower wall).

[0050] Due to the addition of the flow guide 30, the flow cross section of the air outlet gaps 154, 155 is necessarily smaller than the original flow cross section of the air duct 15, which makes the air flow faster. The high-speed air flow gradually converges to the center of the air flow during the outward flow under the guidance of the tapered section of the air duct 15, forming a convergence effect, so that the wind force is very strong, the air supply distance is farther, the demand for long-distance and strong air supply of the wall-mounted air conditioner indoor unit is met, the air supply range is larger, the cooling / heating speed in each part of the indoor space is more uniform, and the human body feels more comfortable.

[0051] In the embodiment, the flow guide 30 not only defines the air outlet gaps 154, 155 with the upper wall 151 and the lower wall 152 of the air duct 15 to increase the air speed, but also guides the air flow to the air outlet gaps 154, 155, or forces the air flow to flow to the air outlet gaps 154, 155, so that the air flow is guided by the converging section of the air duct 15 to form the final converging air supply effect. The embodiment only improves the air duct 15 and adds the flow guide 30 to achieve a very good converging air supply effect, which has a very simple structure, low cost, and is easy to mass produce and popularize.

[0052] In the embodiment, the flow guide 30 is swingably installed on the casing 10 about a center axis X located outside the flow guide 30 and extending in the transverse direction (x direction) of the casing 10, so that the distance of the first air outlet 11 is adjusted by swinging to different positions, and the air volume of the first air outlet 11 is adjustable to better match the user's demand. For example, the center axis X is located above the upper wall 151, and the flow guide 30 can swing forward and backward. When the flow guide 30 swings from the position shown in Figure 2 to the position shown in Figure 3 , the distance between the flow guide 30 and the first air outlet 11 is closer, so that the air outlet of the first air outlet 11 is blocked, and the air volume of the converging air supply is smaller. The flow guide 30 can be further swung to a closed position to close the first air outlet 11. Figure 2 、 Figure 3 In the embodiment, z and O are the long axis and center of the current state of the flow guide 30, and the dashed lines z1 and O1 are the long axis and center of the flow guide 30 when the flow guide 30 is in the closed position.

[0053] In the above embodiment, the swing center axis X of the flow guide 30 is arranged above the upper wall 151 of the air duct 15, which has enough space to arrange the driving device (motor 80 below) for swinging, and also has a long enough swing radius for the flow guide 30, so that the swing range is larger, and the adjustment range of the air direction and the air volume is larger. Of course, in some alternative embodiments, the center axis X can be arranged below the lower wall 152 of the air duct 15.

[0054] In some embodiments, as shown in Figure 2 , the wall-mounted air conditioner indoor unit includes a motor 80 and a connecting rod 81. The motor 80 is installed above the upper wall 151, and the axis thereof extends in the transverse direction of the casing 10 to constitute the aforementioned center axis X. The lower end of the connecting rod 81 is fixed to the flow guide 30, and the upper end is connected to the motor 80 to drive the flow guide 30 to swing under the drive of the motor 80. The connecting rod 81 can be connected to one end of the flow guide 30 in the length direction to not affect the normal air outlet of the air duct 15. The number of the connecting rod 81 can be two, which are connected to both ends of the flow guide 30 in the length direction.

[0055] In some embodiments, as shown in Figure 2 and Figure 3 The cross section of the flow guide 30 (the cross section of the flow guide 30 cut along the front-rear direction) has an olive shape with two upper and lower tips and two front and rear convex curves. The rear convex curve surface of the flow guide 30 is very conducive to splitting the air flow into two and guiding them upward and downward respectively, and the guiding is smoother and the air flow resistance is smaller. The front convex curve surface of the flow guide 30 can guide the air flow near it to flow along the surface and gradually converge to the center, so as to improve the air flow convergence effect together with the tapered inner wall of the air duct 15.

[0056] To match the outer contour of the flow guide 30, the section (as section) of the upper wall 151 of the air duct 15 for defining the air outlet gap 154 is a curved section with the concave side downward, which can be arc-shaped or composed of multiple arc-shaped sections, has a front end point a, a highest point b and a rear end point s, and surrounds the flow guide 30 above the flow guide 30. The section (de section) of the lower wall 152 of the air duct 15 for defining the air outlet gap 155 is a curved section with the concave side inward, which extends upward and slopes from rear to front, and is located below and in front of the flow guide 30. In this way, the air outlet gap 154 and the air outlet gap 155 are both curved or further arc-shaped, so that the change of the air flow direction is smoother and the air flow resistance is smaller.

[0057] Since the X-axis is located above the flow guide 30, the swing radius of the lower end of the flow guide 30 is greater than that of the upper end, so that the swing distance of the lower end is longer. Therefore, when the flow guide 30 swings to different angles, the distances between the flow guide 30 and the upper wall 151 and the lower wall 152 change, and the change amplitudes are different, and the distance between the flow guide 30 and the lower wall 152 changes more, which will cause the air volume of the air outlet gap 154 of the upper wall 151 and the air outlet gap 155 of the lower wall 152 to change (specifically, the air volume of the air outlet gap 155 changes more), so that the air direction after convergence changes, and the air conditioner can adjust the air direction of the converged air supply accordingly. For example, when the flow guide 30 swings from the Figure 2 state to the Figure 3 state, the air outlet gap 154 changes slightly, but the air outlet gap 155 changes greatly, so that the upward air flow of the air outlet gap 155 decreases, and the advantage in the impact and convergence with the downward air flow of the air outlet gap 154 decreases, so that the upward angle of the converged air flow decreases. Through the special design of the shapes of the flow guide 30 and the upper wall 151 and the lower wall 152 of the air duct, the swing of the flow guide 30 can not only adjust the air volume, but also adjust the air direction of the converged air supply, which is very ingenious.

[0058] As shown in Figure 2As shown, the upper wall 151 of the air duct 15 further comprises a slant section (sc section) and an inlet section (ck section). The slant section (sc section) is a straight line extending rearward and upward from the concave side of the upper wall 151 to the rear end of the downward curved section (as section). The inlet section (ck section) extends from the rear end of the slant section (sc section) to the front and upward. The slant section (sc section) and the inlet section (ck section) of the upper wall 151 correspond to the volute tongue of a conventional cross-flow air duct.

[0059] Figure 4 is Figure 1 A cross-sectional view of the flow guide of the wall-mounted air conditioner indoor unit is shown.

[0060] As Figures 2 to 4 shown, the cross-sectional profile of the flow guide 30 can comprise a front arc section 31 and a rear arc section 32. The top end and the bottom end of the two sections are connected by a rounded corner r. The radius of the front arc section 31 can be greater than the radius of the rear arc section 32, so that the rear arc section 32 is relatively more convex, and thus has a smaller distance to the upper wall 151, and the front arc section 31 is relatively more flat, and thus has a larger distance to the upper wall 151, so as to facilitate smoother airflow through the air outlet gap 154. Of course, in some alternative embodiments, the radius of the front arc section 31 can be equal to or less than the radius of the rear arc section 32. In other alternative embodiments, the front arc section 31 and / or the rear arc section 32 can each be connected by multiple arc sections, and the specific structure will not be described again.

[0061] Reference Figure 4 The radius of the front arc section 31 is R1, the radius of the rear arc section 32 is R2, and the distance between the top end and the bottom end of the flow guide 30 is H, which satisfies: 0.5≤R1 / H≤0.8, 0.5≤R2 / H≤0.8, and further satisfies: 0.3≤R1 / H≤0.6, 0.3≤R2 / H≤0.6. In this way, the width (the maximum dimension in the vertical direction) of the flow guide 30 is more coordinated with the curvature of the front and rear surfaces, so as to balance the effects of air guiding and flow resistance.

[0062] In some embodiments, as Figure 2 shown, the distance between the upper and lower edges of the first air outlet 11 can be less than the distance between the top end and the bottom end of the flow guide 30, that is, the vertical dimension of the flow guide 30 is relatively larger, so that the downward inclined portion of the air outlet gap 154 formed by the flow guide 30 and the upper wall 151 of the air duct 15 is longer, and the upward inclined portion of the air outlet gap 155 formed by the flow guide 30 and the lower wall 152 is longer, so as to more effectively guide the airflow to incline downward and upward respectively, and to aggregate the airflow with greater wind power in front of the flow guide 30, so as to increase the air supply distance.

[0063] Figure 5 is Figure 2A schematic view of the indoor unit of the wall-mounted air conditioner when the flow guide is closed to the first air outlet to run the downward air supply mode.

[0064] In some embodiments, the flow guide 30 is configured to swing to a closed position to close the first air outlet 11, as shown in Figure 5 . And when the flow guide 30 is in the closed position, the upper tip thereof is located above the lower tip in front (as shown in Figure 5 ) or directly above. In this way, when the flow guide 30 swings backward to open the first air outlet 11, as shown in Figure 2 , the upper tip thereof is located above the lower tip in front, so that the rear surface of the flow guide 30 is directed upwardly, so that the rear surface of the flow guide 30 is directed upwardly, so that the angle between the converging air supply direction and the air direction of the upstream air duct is smaller, so that the airflow is more easily turned to the converging angle, reducing the air outlet resistance and increasing the air volume of the converging air supply.

[0065] In some embodiments, as shown in Figure 2 , the bottom wall of the cabinet 10 is provided with a second air outlet 12 that is open downwardly and connected to the air duct 15. In this way, air can be supplied downwardly from the second air outlet 12 to the wall-mounted air conditioner indoor unit. In the heating mode, downward air supply is more conducive to accelerating the temperature rise speed of the lower space of the house, so that the human body can feel the heating effect faster.

[0066] To connect the first air outlet 11 and the second air outlet 12, the air duct 15 includes the aforementioned upper wall 151 (ak), lower wall 152 (de) and rear wall 153 (fg). Among them, the front end (a) of the upper wall 151 and the front end (d) of the lower wall 152 define the first air outlet 11. The rear end (e) of the lower wall 152 and the lower end (f) of the rear wall 153 define the second air outlet 12, and the (k section) of the upper wall 151 and the (g end) of the rear wall together define the inlet of the air duct 15. The cross-flow fan 50 is located at the inlet of the air duct 15. The rear wall 153 is the volute of the cross-flow fan, which can be a curved structure with the concave side facing forward as a whole.

[0067] Please refer to Figure 2 and Figure 3 , the second air outlet 12 is provided with a guide plate 60. The guide plate 60 is rotatably mounted on the cabinet 10 to open or close the second air outlet 12 and guide the air supply direction of the second air outlet 12. In addition, the second air outlet 12 can also be provided with a swing leaf assembly or other air guide mechanism.

[0068] As shown in Figure 3As shown, when the air guide plate 60 is in the closed state, the upward-facing surface is the air guide surface 61, and the downward-facing surface is the non-air guide surface 62. The rear wall 153 of the air duct 15 has a concave arc-shaped section 1531 (fh section) near its lower end, preferably a circular arc shape, so that when the air guide plate 60 is rotated to the position where the air guide surface 61 faces forward and upward, the concave arc-shaped section 1531 guides the airflow towards the non-air guide surface 62. In this way, during cooling operation, the air guide plate 60 can be rotated open to a preset angle, allowing airflow not only through the air guide surface 61 but also through the non-air guide surface 62, preventing condensation from forming on either side of the air guide plate 60. Furthermore, when the air guide plate 60 is in the closed state, its front section bends upward; specifically, it can be made entirely of circular arc shape, or only its front section can be bent. Thus, when the air guide plate 60 is in the open state, the curved section at the front of the air guide plate 60 directs the airflow to the outer surface 1522 of the lower wall 152, thereby preventing condensation from forming on the outer surface 1522 of the lower wall 152. The inner surface 1521 of the lower wall 152 is used to define the air outlet gap 155.

[0069] Figure 6 yes Figure 2 The diagram shows the indoor unit of a wall-mounted air conditioner operating in maximum airflow mode. This invention provides at least the following airflow modes for user selection:

[0070] Forward convergence airflow mode: such as Figure 2 As shown, the air guide 30 is positioned behind the first air outlet 11, and the air guide plate 60 closes the second air outlet 12. The air is then concentrated and directed upwards from the first air outlet 11, causing the airflow to avoid the human body. After reaching its highest point, the airflow then disperses downwards, achieving a "shower-like" cooling experience. When the air conditioner is running in cooling mode, it can be operated according to the concentrated airflow mode.

[0071] Cooling and decondensation mode: such as Figure 3 As shown, in the cooling state, the air guide 30 opens the first air outlet 11, and the air guide plate 60 opens the second air outlet 12 at a small angle, so that the airflow is guided by the concave arc section 1531 to blow towards the non-air guide surface 62.

[0072] Downward airflow mode: such as Figure 5As shown, the control flow guide 30 closes the first air outlet 11, and the air deflector 60 opens the second air outlet 12, and air is blown downward from the second air outlet 12 under the guidance of the air deflector 60. When the air conditioner is running in the heating mode, air can be blown in the downward blowing mode to facilitate the heating speed. In this mode, the air deflector 60 can be in the vertically extended state, and the end thereof is adjacent to the upper wall 151 of the air duct 15 to guide the air flow to bend downward and flow to the second air outlet. After the air flow enters the air duct 15, the cross section gradually increases to achieve pressure expansion, and after the action of the air deflector 60, the air flow is turned vertically downward, and then passes through the tapered channel defined by the air deflector 60 and the rear wall 153 of the air duct 15 to achieve acceleration before flowing out. Finally, the heating air volume is large, the air speed is high, and the air direction is vertical, which is conducive to the hot air reaching the ground and achieving good carpet blowing effect.

[0073] Maximum blowing mode: as shown in Figure 6 , the flow guide 30 is located behind the first air outlet 11, the air deflector 60 opens the second air outlet 12, the air is aggregated and blown upward from the first air outlet 11, and the air is blown forward and downward from the second air outlet 12 under the guidance of the air deflector 60. When the air conditioner is running in the cooling or heating mode, the maximum blowing mode can be selected.

[0074] Figure 7 is a schematic view of the cross section of the lower wall of the air duct.

[0075] As shown in Figure 3 and Figure 7 , in some embodiments, the rear end of the lower wall 152 of the air duct 15 has a sharp split 1520 towards the rear end of the tip to split the air flow flowing thereto into two parts to flow out through the two side surfaces of the lower wall 152 respectively, so that the two side surfaces will not condense.

[0076] As shown in Figure 2 , the wall-mounted air conditioner indoor unit can be an indoor unit of an air conditioner that performs cooling / heating through a vapor compression refrigeration cycle system, which further includes a heat exchanger 40 and a fan 50. The heat exchanger 40 is arranged in the cabinet 10 to exchange heat with the air flow flowing therethrough to form a heat exchange air flow, i.e. cold air or hot air, which can be a three-section fin heat exchanger. The fan 50 is arranged in the cabinet 10 to promote the indoor air to enter the cabinet 10 through the top air inlet 13 of the cabinet 10, so that the indoor air is exchanged with the heat exchanger 40 to become a heat exchange air flow, and then promotes the heat exchange air flow to flow to the first air outlet 11 and the second air outlet 12 through the air duct 15, and finally blows to the indoor from the first air outlet 11 and / or the second air outlet 12.

[0077] At this point, those skilled in the art will appreciate that although specific exemplary embodiments of the application have been described herein, the present application also encompasses many other variations or modifications in form, function, terminology and / or detail which have not been expressly described herein but which are within the scope of the present application. Accordingly, the scope of the present application should be gauged by the claims and not by the details of the description.

Claims

1. A wall-mounted air conditioner indoor unit, characterized in that... The wall-mounted air conditioner indoor unit comprises: a casing, a first air outlet in the form of a long strip extending transversely being formed in a front side of the casing, and an air duct being formed in the casing and connected to the first air outlet, wherein an upper wall and a lower wall of the air duct gradually decrease in distance from each other along a direction of air flow at a position close to the first air outlet, thereby forming a tapered section; a flow guide member in the form of a rod extending parallel to a length direction of the first air outlet, the flow guide member being arranged in the air duct and defining air outlet gaps with the upper wall and the lower wall respectively, and being used for guiding air flow towards the first air outlet to the upper wall and the lower wall, so that the air flow is guided by the tapered section of the air duct to flow out of the first air outlet gradually towards a center of the air flow; and the flow guide member is arranged to be swingably mounted to the casing about a central axis extending transversely of the casing and located outside the flow guide member, so as to adjust a distance between the flow guide member and the first air outlet by swinging to different positions; the central axis is located above the upper wall; a cross-sectional profile of the flow guide member is in the form of an "olive shape" having two sharp ends in an upper and lower direction and two curved shapes protruding outward in a front and rear direction; a section of the upper wall used for defining the air outlet gap is a curved section with a concave side facing downward, which surrounds the flow guide member above the flow guide member, and a section of the lower wall used for defining the air outlet gap is a curved section with a concave side facing inward, which extends upward gradually from rear to front and is located below the flow guide member in front of the flow guide member; the flow guide member is arranged to be swung to a closed position for closing the first air outlet; and when the flow guide member is in the closed position, an upper sharp end of the flow guide member is located above or directly above a lower sharp end of the flow guide member, so that when the flow guide member is swung rearward to open the first air outlet, the upper sharp end of the flow guide member is located above the lower sharp end, and a rear surface of the flow guide member faces upward rearward; a rear end of the curved section is lower than a front end.

2. The wall-mounted air conditioner indoor unit according to claim 1, characterized in that Further comprising: a motor mounted above the upper wall and having an axis extending transversely of the casing, so as to constitute the central axis; and a connecting rod having a lower end fixed to the flow guide member and an upper end connected to the motor, so as to drive the flow guide member to swing under a drive of the motor.

3. The wall-mounted air conditioner indoor unit according to claim 1, wherein the upper wall of the air duct further comprises: an inclined section in the form of a straight line extending upward rearward from a rear end of the curved section with a concave side facing downward of the upper wall; and an inlet section extending upward frontward from a rear end of the inclined section.

4. The wall-mounted air conditioner indoor unit according to claim 1, wherein the cross-sectional profile of the flow guide member comprises a front arc section and a rear arc section, and top and bottom ends of the two arc sections are connected by a rounded corner; a radius of the front arc section is R1, a radius of the rear arc section is R2, and a distance between the top and bottom ends of the flow guide member is H, and satisfy: 0.5≤R1 / H≤0.8, 0.5≤R2 / H≤0.

8.

5. The wall-mounted air conditioner indoor unit according to claim 1, wherein a bottom wall of the casing is provided with a second air outlet opening downward and connected to the air duct, and a baffle is arranged at the second air outlet. The air duct comprises the upper wall, the lower wall and a rear wall, the upper wall front end and the lower wall front end define the first air outlet, the lower wall rear end and the rear wall lower end define the second air outlet, the upper wall and the rear wall define the air duct inlet.

6. The wall-mounted air conditioner indoor unit according to claim 5, characterized in that, the upward surface of the air deflector in the closed state is the air deflection surface, and the downward surface is the non-air deflection surface; and the rear wall is provided with an inwardly recessed arc-shaped section adjacent to the lower end, so that when the air deflector is turned to the state that the air deflection surface faces the front and upper side, the air flow is guided to blow toward the non-air deflection surface by the inwardly recessed arc-shaped section.

7. The wall-mounted air conditioner indoor unit according to claim 6, characterized in that, the front section of the air deflector is curved upward in the closed state, so that when the air deflector is turned to the open state, the air flow is guided to the outer surface of the lower wall.

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