CN216143823U - Wall-mounted air conditioner indoor unit - Google Patents

Abstract

The utility model provides a wall-mounted air conditioner indoor unit, which comprises a shell and a flow guide piece. The casing front side is opened and is equipped with the rectangular form first supply-air outlet of horizontal extension, and inside is formed with the wind channel of connecting first supply-air outlet, and the wind channel is being close to first supply-air outlet department, and its upper wall diminishes gradually along the air current direction with the lower wall interval, constitutes the convergent section. The flow guide piece is in a rod shape parallel to the length direction of the first air supply outlet, is arranged in the air duct, respectively limits an air outlet gap with the upper wall and the lower wall, and is used for guiding the airflow blown to the first air supply outlet to the upper wall and the lower wall so that the airflow gradually converges towards the airflow center and flows out of the first air supply outlet under the guidance of the gradually-reduced section of the air duct; and the flow guide piece is configured to rotate around an eccentric shaft parallel to the length direction of the flow guide piece so as to adjust the distance between the flow guide piece and the upper wall and the distance between the flow guide piece and the lower wall, and further adjust the size of the two air outlet gaps. The wall-mounted air conditioner indoor unit has a better remote air supply effect, and the air quantity and the air direction of the supplied air are adjustable in a gathering manner.

Description

Wall-mounted air conditioner indoor unit

Technical Field

The utility model relates to the technical field of air conditioning, in particular to a wall-mounted air conditioner indoor unit.

Background

The existing wall-mounted air conditioner indoor unit is generally provided with a strip-shaped air outlet at the lower part of the front side of a casing, the air outlet faces to the front lower part, and an air deflector is arranged at the air outlet to guide the air supply direction up and down.

On this basis, some prior art have carried out a lot of improvements to the air-out structure, nevertheless owing to receive the restraint of air outlet orientation itself, the air supply direction, the air supply scope and the air supply distance of air conditioner still receive very big restriction, influence user experience.

SUMMERY OF THE UTILITY MODEL

An object of the present invention is to overcome or at least partially solve the above problems and to provide a wall-mounted air conditioning indoor unit capable of converging an air supply.

It is a further object of the present invention to provide for adjustable aggregate air flow and direction.

In particular, the present invention provides a wall-mounted air conditioning indoor unit, comprising:

the air duct is close to the first air supply opening, and the distance between the upper wall and the lower wall of the air duct is gradually reduced along the airflow direction to form a gradually reducing section;

the flow guide piece is in a rod shape parallel to the length direction of the first air supply outlet, is arranged in the air duct, respectively defines an air outlet gap with the upper wall and the lower wall, and is used for guiding the air flow blown to the first air supply outlet to the upper wall and the lower wall so that the air flow gradually converges towards the air flow center and flows out of the first air supply outlet under the guidance of the air duct tapered section; and is

The air guide piece is configured to rotate around an eccentric shaft parallel to the length direction of the air guide piece, so that the distance between the air guide piece and the upper wall and the distance between the air guide piece and the lower wall are adjusted, and the size of the two air outlet gaps is further adjusted.

Optionally, the outer circumferential surface of the flow guide member comprises a first outer convex surface and a second outer convex surface which are opposite in direction, and the joint of the first outer convex surface and the second outer convex surface is a first top end and a second top end, so that the outline of the cross section of the flow guide member is in an olive shape;

the connecting line of the first top end and the second top end forms a long axis of the cross section of the flow guide piece, the perpendicular bisector of the long axis forms a short axis of the cross section of the flow guide piece, the intersection point of the two axes is located on the central axis of the flow guide piece, and the eccentric axis and the central axis are arranged in parallel at intervals.

Optionally, the eccentric shaft intersects the minor axis and is between the second convex outer surface and the central axis and is configured to:

the first outer convex surface is arranged in a position forward to close the first air supply outlet, and the first outer convex surface is arranged in a position backward to enable the flow guide piece, the upper wall and the lower wall to define the air outlet gap.

Optionally, the flow guide is configured to: having a position with the first convex surface facing upwards and abutting the upper wall, with only the second convex surface being spaced from the lower wall; and/or have a position with the first convex surface facing downwards and abutting against the lower wall, with only the second convex surface being spaced from the upper wall.

Optionally, the deflector is configured to be rotatable about the eccentric shaft through 360 ° and to stay in any angular position.

Optionally, the section of the upper wall for defining the air outlet gap is a curved section with a downward concave side, and the section of the lower wall for defining the air outlet gap is a curved section with an inward concave side extending from rear to front in an inclined manner.

Optionally, the first convex surface and the second convex surface are both arc-shaped, and the first top end and the second top end both form a fillet;

the radius of first convex surface is R1, the radius of second convex surface is R2, the first top with the interval of second top is H, satisfies: R1/H is more than or equal to 0.5 and less than or equal to 0.8, and R2/H is more than or equal to 0.5 and less than or equal to 0.8.

Optionally, a second air supply outlet which is open downwards and connected with the air duct is formed in the bottom wall of the casing, and an air deflector is arranged at the second air supply outlet; and is

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 supply outlet, the lower end of the lower wall and the lower end of the rear wall define the second air supply outlet, and the upper wall and the rear wall define an inlet of the air duct.

Optionally, when the air deflector is in a closed state, the upward surface is an air guide surface, and the downward surface is a non-air guide surface; and is

The rear wall is provided with an inward concave arc section near the lower end thereof, so that when the air deflector rotates to the state that the air guiding surface faces forwards and upwards, the inward concave arc section guides and blows air flow to the non-air guiding surface.

Optionally, the front section of the air deflection plate is curved upwardly when in the closed condition to direct the airflow toward the outer side surface of the lower wall when the air deflection plate is in the open condition.

In the wall-mounted air conditioner indoor unit, when air flow blows to the first air supply outlet, the air flow is guided by the flow guide piece to flow to the upper wall and the lower wall of the air duct and enter the corresponding air outlet gap. Because the overflowing cross section of the air outlet gap is smaller, the air outlet speed is higher. The high-speed airflow is gradually converged towards the center of the airflow in the outward flowing process under the guidance of the air duct reducing section to form a convergence effect, so that the wind power is stronger, the air supply distance is longer, and the requirements of the wall-mounted air conditioner indoor unit on long-distance air supply and strong air supply are met. And the diversion piece can rotate around the eccentric shaft of the diversion piece, so that the distance between the outer surface of the diversion piece and the upper wall and the lower wall of the air duct can be adjusted by rotating the diversion piece to different positions, the size of an air outlet gap is further adjusted, and the air volume of the first air supply outlet can be adjusted.

Furthermore, in the wall-mounted air conditioner indoor unit, the flow guide piece is of an olive-shaped structure, when the flow guide piece rotates to different angle positions, the change direction (increase or decrease) and amplitude of the distance between the flow guide piece and the upper wall of the air duct and the lower wall of the air duct are different, so that the air volume comparison between the air outlet gap of the upper wall and the air outlet gap of the lower wall is changed, the converged wind direction is changed, and the air conditioner can adjust the wind direction of the converged air supply according to the change.

The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the utility model will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

fig. 1 is a schematic structural view of a wall-mounted type air conditioning indoor unit according to an embodiment of the present invention;

FIG. 2 is an enlarged cross-sectional view of a baffle member according to an embodiment of the present invention;

fig. 3 is a schematic cross-sectional enlarged view of the wall-mounted air conditioning indoor unit shown in fig. 1;

fig. 4 is a schematic view of the wall-mounted air conditioning indoor unit of fig. 3 with the first outer convex surface of the guide facing rearward;

fig. 5 is a schematic view of the wall-mounted air conditioning indoor unit of fig. 3 with the first outer convex surface of the guide facing upward;

fig. 6 is a schematic view of the wall-mounted air conditioning indoor unit of fig. 3 with the first outer convex surface of the guide facing downward;

fig. 7 is a schematic view of the wall-mounted air conditioning indoor unit of fig. 3 with the first outer convex surface of the guide facing downward and forward;

fig. 8 is a schematic view of the wall-mounted air conditioning indoor unit of fig. 3 in a down-blowing mode of operation;

fig. 9 is a schematic view of the wall-mounted air conditioning indoor unit of fig. 3 operating in a maximum blowing mode;

FIG. 10 is a schematic cross-sectional view of the lower wall of the duct.

Detailed Description

A wall-mounted type air conditioning indoor unit according to an embodiment of the present invention will be described with reference to fig. 1 to 10. Where the orientations or positional relationships indicated by the terms "front," "back," "upper," "lower," "top," "bottom," "inner," "outer," "lateral," and the like are based on the orientations or positional relationships shown in the drawings, the description is for convenience only and to simplify the description, and no indication or suggestion is made that the device or element so indicated must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the utility model. The flow direction of the air flow is indicated by arrows in the figure.

The terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first," "second," etc. may explicitly or implicitly include at least one such feature, i.e., one or more such features. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. When a feature "comprises or comprises" a or some of its intended features, this indicates that other features are not excluded and that other features may be further included, unless expressly stated otherwise.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and "coupled" and the like are to be construed broadly and can, for example, be fixedly connected or detachably connected or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. Those skilled in the art should understand the specific meaning of the above terms in the present invention according to specific situations.

The embodiment of the utility model provides a wall-mounted air conditioner indoor unit. An indoor unit of a wall-mounted type air conditioner is an indoor part of a split wall-mounted type room air conditioner for conditioning indoor air, such as cooling/heating, dehumidifying, introducing fresh air, and the like.

Fig. 1 is a schematic structural view of a wall-mounted type air conditioning indoor unit according to an embodiment of the present invention; FIG. 2 is an enlarged cross-sectional view of a baffle member according to an embodiment of the present invention; fig. 3 is a schematic cross-sectional enlarged view of the wall-mounted air conditioning indoor unit shown in fig. 1; fig. 4 is a schematic view of the wall-mounted air conditioning indoor unit of fig. 3 with the first outer convex surface of the guide facing rearward; fig. 5 is a schematic view of the wall-mounted air conditioning indoor unit of fig. 3 with the first outer convex surface of the guide facing upward; fig. 6 is a schematic view of the wall-mounted air conditioning indoor unit of fig. 3 with the first outer convex surface of the guide facing downward.

As shown in fig. 1 to 4, a wall-mounted type air conditioning indoor unit according to an embodiment of the present invention may generally include a cabinet 10 and a guide 30.

A first air supply outlet 11 is formed in the front of the casing 10 and extends in the transverse direction. The cabinet 10 is a long bar extending in a horizontal direction for hanging on an indoor wall. The lateral direction of the housing 10, i.e. its length direction, is indicated by x in the figure. An air duct 15 connected to the first blowing port 11 is formed inside the casing 10. The casing 10 of the present embodiment includes a framework for forming a basic frame of the indoor unit and body components such as a volute and a volute tongue for defining the air duct 15, and is not a pure air conditioning casing. The first air blowing port 11 is used for blowing an air flow in the casing 10 into the room to condition the indoor air. The air flow can be cold air produced by the wall-mounted air conditioner indoor unit in a refrigeration mode, hot air produced in a heating mode, or fresh air introduced in a fresh air mode, and the like. The distance between the upper wall 151 (specifically, the ba section) and the lower wall 152 (specifically, the ed section) of the air duct 15 adjacent to the first air supply outlet 11 is gradually reduced along the airflow direction, so as to form a tapered section of the air duct 15, as shown in fig. 2. In other words, the flow cross section of the air duct 15 becomes gradually smaller in the air flow direction adjacent to the first supply outlet 11.

The flow guide member 30 is a rod-shaped member parallel to the longitudinal direction (x direction) of the first air blowing opening 11, is disposed in the air duct 15, and defines air outlet gaps 154 and 155 with (the sa section of) the upper wall 151 and (the ed section of) the lower wall 152 thereof, respectively, and is configured to guide the air flow blown toward the first air blowing opening 11 to the upper wall 151 and the lower wall 152 of the air duct 15, so that the air flow gradually flows out of the first air blowing opening 11 toward the center of the air flow while being converged under the guidance of the tapered section (defined by the ba section of the upper wall and the ed section of the lower wall) of the air duct 15.

Due to the addition of the air guide 30, the flow cross section of the outlet air gaps 154, 155 is necessarily smaller than that of the original air duct 15, which makes the air flow velocity faster. The high-speed air flow is gradually converged towards the center direction of the air flow in the outward flowing process under the guide of the gradually-reduced section of the air duct 15 to form a convergence effect, so that the wind power is very strong, the air supply distance is farther, the requirements of a wall-mounted air conditioner indoor unit on remote air supply and strong air supply are met, the air supply range is larger, the refrigerating/heating speed of each part of the indoor space is more uniform, and the human body feels more comfortable.

In the embodiment of the present invention, the flow guiding element 30 not only defines the air outlet gaps 154 and 155 with the upper wall 151 and the lower wall 152 of the air duct 15 to play a role of increasing the wind speed, but also just guides the airflow to the air outlet gaps 154 and 155, or forces the airflow to flow toward the air outlet gaps 154 and 155, so as to force the airflow to be converged and guided by the tapered section of the air duct 15, thereby forming the final converged air supply effect. The embodiment of the utility model realizes a very good polymerization air supply effect only by improving the air duct 15 and additionally arranging the flow guide member 30, has very simple structure and lower cost, is easy to realize mass production and popularization, and has very ingenious conception.

In the embodiment of the present invention, the air guiding element 30 is configured to rotate around an eccentric axis X parallel to its length direction, so as to adjust the distance between the air guiding element and the upper wall 151 and the lower wall 152, and thus adjust the size of the two air outlet gaps 154 and 155. The position of the eccentric axis X is kept constant, and the distance between the eccentric axis X and the upper wall 151 and the lower wall 152 is kept constant, but the position of the eccentric axis X deviates from the geometric central axis of the air guide 30, so that the distance between each point on the outer peripheral surface of the air guide 30 and the eccentric axis X is not completely the same, the air guide 30 rotates to different angles, and the sizes of the two air outlet gaps 154 and 155 are inevitably changed. For example, when the baffle 30 is rotated such that a section of its outer peripheral surface closer to the eccentric axis X faces the upper wall 151, its distance from the upper wall 151 will increase, and a section farther from the eccentric axis X faces the upper wall 151, its distance from the upper wall 151 will decrease.

In some embodiments, the cross-section of the baffle 30 may be circular, oval, etc.

In other embodiments, as shown in fig. 1-4, the outer peripheral surface of the baffle 30 includes oppositely facing first and second convex surfaces 31, 32 that meet at first and second apexes a1, a2, such that the cross-sectional profile is "olive-shaped". The first and second convex surfaces 31, 32 are "snapped" together like facing each other. The cross section of the flow guide element 30 has a major axis z and a minor axis y, a connecting line of the first top end a1 and the second top end a2 forms the major axis z, a perpendicular bisector of the major axis z forms the minor axis y (both the major axis z and the minor axis y in this embodiment are line segments, and are straight lines), an intersection point of the two axes (the major axis z and the minor axis y) falls on a central axis X1 of the flow guide element 30, and the eccentric axis X is parallel to and spaced from the central axis X1.

For example, the eccentric axis X may be intersected by the minor axis y and located between the second convex outer surface 32 and the central axis X1. Moreover, the flow guide member 30 is configured to have a closed position in which the first outer convex surface 31 faces forward and closes the first blowing port 11, as shown in fig. 3; and has a position where the first outer convex surface 31 faces rearward so that the air guide 30 defines air outlet gaps 154, 155 with the upper and lower walls 151, 152, as shown in fig. 4. The position of the first outer convex surface 31 facing backward can be a normal converging air supply position of the air conditioner. The first top end A1 and the second top end A2 of the flow guide piece 30 face downwards and upwards respectively, the first convex surface 31 faces backwards, and the convex shape of the first convex surface is very beneficial to splitting the air flow into two flows and guiding the two flows upwards and downwards respectively, so that the air flow is guided more smoothly and the air flow resistance is smaller. The second outward convex surface 32 protruding forward of the flow guiding element 30 can guide the airflow nearby to flow close to the surface so as to converge toward the center direction of the surface gradually, so as to perform a converging action on the airflow together with the tapered inner wall of the air duct 15, thereby improving the airflow converging effect.

Of course, the baffle 30 can have other positions where the first convex outer surface 31 faces upward or downward to space the baffle 30 from the upper wall 151 and/or the lower wall 152 (see fig. 5 and 6).

The embodiment locates the eccentric shaft X between the second convex surface 32 and the central axis X1, so that the first convex surface 31 can close the first air supply opening 11 when facing forward by properly designing the distance between the eccentric shaft X and the first air supply opening 11. When the air conditioner is in a shutdown state or a standby state, the first air supply outlet 11 is closed by the first outer convex surface 31, so that dust or other foreign matters can be prevented from entering the casing 10, and a separate air door is not needed to open and close the first air supply outlet 11.

In order to match the outer contour of the air guide 30, the section (as section) of the upper wall 151 of the air duct 15 defining the air outlet gap 154 is a curved section with a concave side facing downward, and may be an arc or be formed by connecting multiple arc sections, and has a front end point a, a highest point b and a rear end point s. The section (i.e., the section de) of the lower wall 152 of the air duct 15 for defining the air outlet gap 155 is a concave curved section extending obliquely upward from the rear to the front. When the baffle 30 is in the downward and upward positions with its first apex A1 and second apex A2 facing downward and upward, respectively, the downwardly curved section of the upper wall 151 surrounds the baffle 30 above the baffle 30 and the lower wall 152 is positioned forwardly and downwardly of the baffle 30. Thus, the air outlet gap 154 and the air outlet gap 155 are both curved or further arc-shaped, and the change of the flow cross section along the airflow direction is small, so that the airflow direction is changed to be smoother, and the airflow resistance is reduced. As shown in fig. 4, the upper wall 151 of the duct 15 also includes an inclined section (sc section) and an inlet section (ck section). The inclined segment (sc segment) is a straight line extending rearward and upward from the concave side of the upper wall 151 toward the rear end of the downwardly curved segment (as segment). The inlet section (ck section) is bent and extended forwards and upwards from the rear end of the inclined section (sc section). The inclined section (sc section) and the inlet section (ck section) of the upper wall 151 correspond to the volute tongue of a conventional cross-flow duct.

In the embodiment of the present invention, since the flow guiding element 30 is in an "olive" shape, when it rotates to different angular positions, the changing direction (increase or decrease) and the changing amplitude of the distance between the flow guiding element and the upper wall 151 and the lower wall 152 are different, which will cause the air volume contrast between the air outlet gap 154 of the upper wall 151 and the air outlet gap 155 of the lower wall 152 to change, so that the merged wind direction is changed, and the air conditioner can adjust the wind direction of the aggregated air supply accordingly. With particular reference to fig. 4 and 6.

(1) Please refer to fig. 4: when the first outer convex surface 31 faces rearward, the sizes of the outlet gap 154 and the outlet gap 155 (which refers to the width of the narrowest portion of the outlet gap) are substantially equal, so that the converging airflow flows substantially directly forward.

(2) When the first outer convex surface 31 faces upward, the air outlet gap 154 becomes smaller and the air outlet gap 155 becomes larger than in the backward state. The air volume of the upward flow of the air outlet gap 155 is significantly increased, and the downward flow of the air outlet gap 154 is dominant in impact convergence, so that the aggregated air flows upward as a whole.

(3) Referring to fig. 6, when the first outer convex surface 31 faces downward, the air outlet gap 154 is larger and the air outlet gap 155 is smaller than in the backward state. The downdip airflow of the air outlet gap 154 has a significantly increased air volume, and is dominant in impinging and merging with the upward airflow of the air outlet gap 155, so that the aggregated airflow flows in a downdip manner as a whole.

Fig. 7 is a schematic view of the wall-mounted air conditioning indoor unit of fig. 3 with the first outer convex surface of the guide facing downward and forward.

The utility model further allows the deflector 30 to be configured to rotate about the eccentric axis through 360 ° and to stay in any angular position, thereby allowing more flexibility in adjusting the direction of the converging air flow. For example, the baffle 30 may be rotated from the state shown in fig. 6 to the state shown in fig. 7, such that the first outer convex surface 31 is changed from directly downward to directly downward, the air outlet gap 154 is decreased, and the downward inclination angle of the converging air flow is decreased. In summary, the present invention can adjust the wind direction and the wind quantity of the polymer gas flow to the user's desired state by making the diversion member 30 stay at any angle position.

In some embodiments, as shown in fig. 5, the baffle 30 may be configured to: there is a position where the first convex outer surface 31 faces upward and abuts against the upper wall 151, and only the second convex outer surface 32 is spaced from the lower wall 152. At this time, the air outlet gap 154 is closed, and the airflow completely flows out through the space between the second convex surface 32 and the lower wall 152, that is, the air outlet gap 155, so that the airflow can be blown out upward.

Similarly, the flow guide member 30 may have a position, not shown, where the first convex surface 31 faces downward and abuts against the lower wall 152, and the second convex surface 32 is spaced from the upper wall 151. At this time, the air outlet gap 155 is closed, the airflow completely flows out through the gap between the second outer convex surface 32 and the upper wall 151, that is, the air outlet gap 154, so that the airflow can sink and be blown out, and the airflow sink angle is larger because the upward airflow does not impact the upward airflow.

As shown in fig. 2, the first convex surface 31 and the second convex surface 32 may be both circular arc surfaces, and the radii of the two surfaces may be equal. In addition, in some alternative embodiments, the radius of the first convex surface 31 may be larger than the radius of the second convex surface 32, so that the second convex surface 32 is relatively more convex, and thus the distance between the second convex surface and the upper wall 151 is smaller, and the distance between the first convex surface 31 and the upper wall 151 is relatively more flat, so that the airflow can more smoothly flow through the air outlet gap 154. In other alternative embodiments, the first convex surface 31 and/or the second convex surface 32 may be formed by connecting multiple segments of circular arcs, and detailed descriptions of the structures are omitted.

Referring to fig. 2, the radius of the first convex surface 31 is R1, the radius of the second convex surface 32 is R2, and the distance between the first top end a1 and the second top end a2 of the baffle 30 is H, which satisfies the following conditions: R1/H is more than or equal to 0.5 and less than or equal to 0.8, R2/H is more than or equal to 0.5 and less than or equal to 0.8, and further R1/H is more than or equal to 0.3 and less than or equal to 0.6, and R2/H is more than or equal to 0.3 and less than or equal to 0.6. In this way, the width of the air guide element 30 (the distance between a1 and a 2) and the curvature of the two convex surfaces are more coordinated, so as to balance the air guiding effect and the flow resistance.

In some embodiments, as shown in fig. 4, the distance between the upper and lower edges of the first air blowing opening 11 may be made smaller than the width of the air guiding member 30, that is, the air guiding member 30 is made relatively wider, and the first air blowing opening 11 is made relatively narrower, so that the downward inclined portion of the air outlet gap 154 formed by the air guiding member 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 lower wall 152 is longer, so as to more strongly guide the air flow to be inclined downward and upward respectively, and converge in front of the air guiding member 30 with greater wind force, and make the air blowing distance longer.

In some embodiments, as shown in fig. 3, the bottom wall of the casing 10 is opened with a second air outlet 12 opening downwards and connected to the air duct 15, and an air deflector 60 is disposed at the second air outlet 12. In this way, air can be supplied from the second air supply outlet 12 to the right below the wall-mounted air conditioning indoor unit. The downward air supply in the heating mode is more favorable for accelerating the temperature rising speed of the lower-layer space of the house, so that the human body can feel the heating effect more quickly.

The duct 15 includes the aforementioned upper wall 151(ak), a lower wall 152(de) and a rear wall 153(fg) for connecting the first supply port 11 and the second supply port 12. Wherein the front end (a) of the upper wall 151 and the front end (d) of the lower wall 152 define the first blowing port 11. The rear end (e) of the lower wall 152 and the lower end (f) of the rear wall 153 define the second supply port 12, the (k-section of the) upper wall 151 and the (g-end of the) rear wall together define the inlet of the duct 15, and the cross-flow fan 50 is located at the inlet of the duct 15. The rear wall 153 is a volute of the crossflow blower which as a whole may be of a concave side forward curved configuration.

As shown in fig. 4, the air guide plate 60 has an upward surface serving as an air guide surface 61 and a downward surface serving as a non-air guide surface 62 in the closed state. The rear wall 153 of the air duct 15 has a concave arc-shaped section 1531(fh section), preferably in a circular arc shape, near the lower end thereof, so that when the air deflector 60 is rotated to a state where the air guiding surface 61 faces forward and upward, the air flow is guided to the non-air guiding surface 62 by the concave arc-shaped section 1531. Therefore, during the cooling operation, the air deflector 60 can be rotated to open a preset angle, so that not only the air guide surface 61 but also the non-air guide surface 62 can pass through the air deflector, and no condensation is generated on both sides of the air deflector 60. Further, when the air guide plate 60 is in the closed state, the front section thereof is bent upward, specifically, the entire front section thereof may be curved in an arc shape, or only the front section thereof may be bent. In this way, when the air deflector 60 is in the open state, the section bent from the front of the air deflector 60 guides the airflow to the outer side surface 1522 of the lower wall 152, so that the outer side surface 1522 of the lower wall 152 is not exposed to condensation. The inside surface 1521 of the lower wall 152 serves to form a tapered section of the air chute.

Fig. 8 is a schematic view of the wall-mounted air conditioning indoor unit of fig. 3 in a down-blowing mode of operation; fig. 9 is a schematic view of the wall-mounted air conditioning indoor unit of fig. 3 in a maximum blowing mode. The embodiment of the utility model at least has the following air supply modes for users to select, and specifically comprises the following steps:

forward polymerization blow-in mode: as shown in fig. 4, the air guide member 30 is rotated to a state that the first convex surface 31 faces backward, the air guide plate 60 closes the second air blowing opening 12 or opens the second air blowing opening 12 at a small angle to avoid condensation, and the air is blown forward by the convergence of the first air blowing opening 11. When the air conditioner operates in a refrigeration mode, air can be supplied according to a polymerization air supply mode.

Refrigeration uplift air delivery mode: as shown in fig. 5, the air guide member 30 is rotated to a state that the first convex surface 31 faces upward, the air guide plate 60 closes the second air blowing opening 12 or opens the second air blowing opening 12 at a small angle to avoid condensation, and air is blown forward and upward from the first air blowing opening 11. When the air conditioner operates in a refrigeration mode, air can be supplied according to an upward blowing mode.

Refrigeration sinks air supply mode: as shown in fig. 6 and 7, the air guide member 30 is rotated to a state where the first convex surface 31 faces downward, the air guide plate 60 closes the second air blowing port 12 or opens the second air blowing port 12 at a small angle to prevent condensation, and air is blown downward and forward by the convergence of the first air blowing port 11. When the air conditioner operates in the cooling mode, air can be supplied according to the air supply mode.

Downward air supply mode: as shown in fig. 8, the deflector 30 is controlled to close the first air blowing port 11, so that the air deflector 60 opens the second air blowing port 12, and air is blown downward from the second air blowing port 12 under the guidance of the air deflector 60. When the air conditioner operates in a heating mode, air can be supplied according to a lower air supply mode, so that the heating speed is accelerated. In this mode, the air deflector 60 may be in a vertically extending state, and the end thereof is adjacent to the upper wall 151 of the air duct 15, so as to guide the air flow to flow downward and bend to the second air outlet. After the airflow enters the air duct 15, the cross section of the airflow gradually increases to realize diffusion, the airflow is turned vertically downwards under the action of the air deflector 60, and then the airflow passes through a tapered channel defined by the air deflector 60 and the rear wall 153 of the air duct 15 to realize acceleration before flowing out. Finally, the air quantity of the heating air supply is large, the air speed is high, the wind direction is vertical, the hot air can directly reach the ground, and the carpet type air supply effect is good.

The maximum air supply mode is as follows: as shown in fig. 9, both the first air blowing port 11 and the second air blowing port 12 are opened, and both air is blown out simultaneously.

FIG. 10 is a schematic cross-sectional view of the lower wall of the duct.

As shown in fig. 4 and 10, in some embodiments, the rear end of the lower wall 152 of the air duct 15 has a wedge 1520 pointed backward for splitting the air flowing toward the rear end into two parts to flow out through the two side surfaces of the lower wall 152 respectively, so that the two side surfaces thereof are not exposed to condensation.

As shown in fig. 3, the wall-mounted air conditioner indoor unit may be an indoor unit of an air conditioner that performs cooling/heating through a vapor compression refrigeration cycle, and further includes a heat exchanger 40 and a blower 50. The heat exchanger 40 is disposed in the casing 10, and is configured to exchange heat with an air flow flowing through the casing to form a heat exchange air flow, i.e., a cold air or a hot air, which may be a three-stage fin heat exchanger. The fan 50 is disposed in the casing 10, and is configured to cause indoor air to enter the casing 10 through the air inlet 13 at the top of the casing 10, to cause the indoor air to exchange heat with the heat exchanger 40 to form heat exchange air flow, to cause the heat exchange air flow to flow through the air duct 15 to the first air supply outlet 11 and the second air supply outlet 12, and to finally blow the air from the first air supply outlet 11 and/or the second air supply outlet 12 to the indoor space.

Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the utility model have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the utility model may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the utility model. Accordingly, the scope of the utility model should be understood and interpreted to cover all such other variations or modifications.

Claims (10)

1. A wall-mounted air conditioner indoor unit, comprising:

the air duct is close to the first air supply opening, and the distance between the upper wall and the lower wall of the air duct is gradually reduced along the airflow direction to form a gradually reducing section; and

the flow guide piece is in a rod shape parallel to the length direction of the first air supply outlet, is arranged in the air duct, respectively defines an air outlet gap with the upper wall and the lower wall, and is used for guiding the air flow blown to the first air supply outlet to the upper wall and the lower wall so that the air flow gradually converges towards the air flow center and flows out of the first air supply outlet under the guidance of the air duct tapered section; and is

The air guide piece is configured to rotate around an eccentric shaft parallel to the length direction of the air guide piece, so that the distance between the air guide piece and the upper wall and the distance between the air guide piece and the lower wall are adjusted, and the size of the two air outlet gaps is further adjusted.

2. The wall-mounted air conditioning indoor unit of claim 1,

the outer peripheral surface of the flow guide piece comprises a first outer convex surface and a second outer convex surface which are opposite in direction, and the joint of the first outer convex surface and the second outer convex surface is a first top end and a second top end, so that the outline of the cross section of the flow guide piece is in an olive shape;

the connecting line of the first top end and the second top end forms a long axis of the cross section of the flow guide piece, the perpendicular bisector of the long axis forms a short axis of the cross section of the flow guide piece, the intersection point of the two axes is located on the central axis of the flow guide piece, and the eccentric axis and the central axis are arranged in parallel at intervals.

3. The wall-mounted air conditioning indoor unit of claim 2,

the eccentric shaft intersects the minor axis and is between the second convex exterior surface and the central axis and is configured to:

the first outer convex surface is arranged in a position forward to close the first air supply outlet, and the first outer convex surface is arranged in a position backward to enable the flow guide piece, the upper wall and the lower wall to define the air outlet gap.

4. The wall-mounted air conditioning indoor unit of claim 3,

the flow guide is configured to: having a position with the first convex surface facing upwards and abutting the upper wall, with only the second convex surface being spaced from the lower wall; and/or have a position with the first convex surface facing downwards and abutting against the lower wall, with only the second convex surface being spaced from the upper wall.

5. The wall-mounted air conditioning indoor unit of claim 3,

the guide member is configured to be rotatable around the eccentric shaft within a range of 360 ° and to be rested at any angular position.

6. The wall-mounted air conditioning indoor unit of claim 2,

the section of the upper wall for limiting the air outlet gap is a bending section with a downward concave side, and the section of the lower wall for limiting the air outlet gap is a concave bending section which extends upwards and slantwise from back to front.

7. The wall-mounted air conditioning indoor unit of claim 2,

the first outer convex surface and the second outer convex surface are both arc-shaped, and the first top end and the second top end form a fillet; and is

The radius of first convex surface is R1, the radius of second convex surface is R2, the first top with the interval of second top is H, satisfies: R1/H is more than or equal to 0.5 and less than or equal to 0.8, and R2/H is more than or equal to 0.5 and less than or equal to 0.8.

8. The wall-mounted air conditioning indoor unit of claim 1,

a second air supply outlet which is opened downwards and connected with the air duct is formed in the bottom wall of the shell, and an air deflector is arranged at the second air supply outlet; and is

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 supply outlet, the lower end of the lower wall and the lower end of the rear wall define the second air supply outlet, and the upper wall and the rear wall define an inlet of the air duct.

9. The wall-mounted air conditioning indoor unit of claim 8,

when the air deflector is in a closed state, the upward surface is an air guide surface, and the downward surface is a non-air guide surface; and is

The rear wall is provided with an inward concave arc section near the lower end thereof, so that when the air deflector rotates to the state that the air guiding surface faces forwards and upwards, the inward concave arc section guides and blows air flow to the non-air guiding surface.

10. The wall-mounted air conditioning indoor unit of claim 9,

the air deflection plate has a front section that is curved upwardly when in the closed condition to direct airflow toward the outer side surface of the lower wall when the air deflection plate is in the open condition.

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