Wall-mounted air conditioner indoor unit

Abstract

The application provides a wall-mounted air conditioner indoor unit, which comprises a shell, two connecting arms and an air guide cylinder. The shell is provided with an air outlet for allowing heat exchange air to blow out. The two connecting arms are arranged along the length direction of the shell and are connected to the shell respectively. The air guide cylinder is arranged outside the shell and extends along the length direction of the shell. The peripheral wall of the air guide cylinder is provided with an air outlet for blowing out air. The two axial ends of the air guide cylinder are rotatably installed on the two connecting arms respectively, so that the orientation of the air outlet can be adjusted. The application can adjust the air mixing amount of the wall-mounted air conditioner indoor unit.

Description

TECHNICAL FIELD

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

[0002] With the development of the times and the progress of technology, users not only expect air conditioners to have faster cooling and heating speeds, but also pay more and more attention to the comfort performance of air conditioners. After the air conditioner is turned on and runs, the user not only feels cool or warm, but also pays more attention to whether the wind feeling experience is comfortable.

[0003] Some existing wall-mounted air conditioner indoor units adopt a flow guiding and mixing technology to adjust the temperature of the air supply. Specifically, the wall-mounted air conditioner indoor unit mixes the room temperature air with the heat exchange airflow when it is running. In cooling mode, the temperature of the mixed air supply airflow is higher than that of the heat exchange airflow, forming a cool but not cold cooling effect; in heating mode, the temperature of the mixed air supply airflow is lower than that of the heat exchange airflow, forming a hot but not dry heating effect, making the human body feel more comfortable.

[0004] However, the existing flow guiding and mixing structure mostly uses the negative pressure of the heat exchange airflow to attract room temperature indoor air to mix in, and the mixing air volume is too small and cannot be adjusted, resulting in poor mixing effect. SUMMARY

[0005] The purpose of the present application is to overcome at least one of the defects in the prior art, and to provide a wall-mounted air conditioner indoor unit with adjustable mixing air volume.

[0006] Another purpose of the present application is to effectively improve the mixing air volume.

[0007] In particular, the present application provides a wall-mounted air conditioner indoor unit, comprising:

[0008] a housing having an air outlet for allowing the heat exchange airflow to blow out;

[0009] two connecting arms arranged along the length direction of the housing and connected to the housing respectively;

[0010] a flow guiding duct arranged outside the housing and extending along the length direction of the housing, a peripheral wall of the flow guiding duct being provided with an air outlet for blowing out airflow; and

[0011] the two ends of the flow guiding duct in the axial direction are rotatably mounted on the two connecting arms respectively, so that the orientation of the air outlet can be adjusted.

[0012] Optionally, the wall-mounted air conditioner indoor unit further comprises:

[0013] a first motor mounted on one of the connecting arms;

[0014] a first gear connected to the rotating shaft of the first motor;

[0015] a second gear, which is an internal gear and engages with the first gear, the second gear being connected to the air duct to drive the air duct to rotate when the first motor operates.

[0016] Optionally, one axial end face of the air duct has a plurality of insertion holes, and an outer end face of the second gear has a plurality of insertion posts, each of the insertion posts being inserted into one of the insertion holes.

[0017] Optionally, each of the connecting arms comprises:

[0018] a decorative plate vertically extending outside a transverse end cover of the casing, a top portion of the decorative plate being bent to form a hooking segment to be hooked to a top face of the casing; and

[0019] a base connected to an inner side face of the decorative plate facing the end cover and used to be connected to the air duct.

[0020] Both axial ends of the air duct are rotatably mounted in mounting holes of the two bases, and the first motor, the first gear and the second gear are arranged in the bases.

[0021] Optionally, each of the axial ends of the air duct is sleeved with a sleeve ring, and each of the sleeve rings is in contact with a hole wall of the mounting hole.

[0022] Optionally, a peripheral wall of the air duct is provided with an air inlet.

[0023] The wall-mounted air conditioner further comprises at least one air fan arranged inside the air duct and used to introduce indoor air outside the casing into the air duct through the air inlet and then blow out through the air outlet so as to be mixed into the heat exchange air flow blown out from the air outlet.

[0024] Optionally, each of the air fans is a cross-flow fan, and a length direction of the cross-flow fan is parallel to an axial direction of the air duct.

[0025] Optionally, the air fans are arranged in the axial direction of the air duct.

[0026] Optionally, each of the air fans comprises:

[0027] a cross-flow air duct arranged in the air duct and defining a cross-flow air passage, an inlet of the cross-flow air passage being communicated with the air inlet, and an outlet of the cross-flow air passage being communicated with the air outlet; and

[0028] a cross-flow fan wheel arranged in the cross-flow air passage.

[0029] Optionally, the air duct interior space is formed into multiple sections in the axial direction, a part of the sections are provided with the fan, and the other sections are provided with the adjusting air flow introduced into the shell through the connecting arm and the air flow blown out through the air outlet.

[0030] In the wall-mounted air conditioner indoor unit of the present application, in order to strengthen the air induction and mixing effect, an air duct is additionally arranged outside the shell, and the air outlet of the air duct is used to blow out the air flow, which is a mixture of one or more of indoor air, fresh air flow, purified air flow, humidified air flow, etc. The air flow is mixed with the heat exchange air flow to form the air induction and mixing effect. Moreover, the angle of the air flow blown out by the air outlet to the heat exchange air flow can be adjusted by adjusting the orientation of the air outlet, so as to adjust the air mixing effect. The larger the angle of convergence, the closer the air mixing point to the shell, and the stronger the air mixing.

[0031] Further, in the wall-mounted air conditioner indoor unit of the present application, at least one fan is arranged in the air duct. When the fan is turned on, the indoor air outside the shell is introduced into the air duct through the air inlet of the air duct, and the indoor air is discharged through the air outlet of the air duct to mix with the heat exchange air flow blown out by the air outlet of the shell. Under the action of the fan, a large amount of indoor air can be mixed into the heat exchange air flow, so that the air mixing amount is larger, and the air induction and mixing effect is very obvious. In the cooling mode, the temperature of the mixed air flow is higher than that of the heat exchange air flow, so that a cool but not cold cooling effect is formed. In the heating mode, the temperature of the mixed air flow is lower than that of the heat exchange air flow, so that a hot but not dry heating effect is formed, and the human body feels more comfortable.

[0032] Further, in the wall-mounted air conditioner indoor unit of the present application, the air duct extends along the length direction of the shell, and the fan is a cross-flow fan, so as to utilize the characteristics of the cross-flow fan, i.e. radial air inlet and radial air outlet, to realize the air inlet at the lower side of the peripheral wall of the air duct and the air outlet at the front side, so as to introduce the indoor air from the lower side of the shell and blow the indoor air forward to mix with the heat exchange air flow in front of the shell. Moreover, the cross-flow fan is in the shape of a cylinder, which is more suitable for the shape of the air duct, so that the air induction and mixing structure is more compact as a whole.

[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 considered in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0034] Some embodiments of the present application will be described in detail below with reference to the drawings, which are by way of illustration and not limitation. Like reference numerals designate like parts or portions throughout the drawings. It should be understood that the drawings are not necessarily to scale. In the drawings:

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

[0036] Figure 2 is Figure 1 an enlarged side view of the wall-mounted air conditioner indoor unit shown in

[0037] Figure 3 is Figure 1 an exploded view of the air induction duct and the fan in

[0038] Figure 4 is Figure 3 an exploded view of the fan in

[0039] Figure 5 is Figure 1 a schematic view of the wall-mounted air conditioner indoor unit shown in

[0040] Figure 6 is Figure 5 an enlarged side view of the wall-mounted air conditioner indoor unit shown in

[0041] Figure 7 is Figure 1 an exploded view of the wall-mounted air conditioner indoor unit shown in

[0042] Figure 8 is Figure 7 an exploded view of the base and its internal structure in

[0043] Figure 9 is Figure 7 a further exploded view of

[0044] Figure 10 is Figure 9 another angle view of DETAILED DESCRIPTION

[0045] The wall-mounted air conditioner indoor unit of the embodiments of the present application will be described below with reference to Figures 1 to 10 The terms "front", "back", "upper", "lower", "top", "bottom", "inner", "outer", "lateral" and the like, as used in this specification, refer to the orientation or position of the apparatus or element shown in the drawings, and are used only to facilitate the description of the present application and to simplify the description, and are not intended to indicate or imply that the apparatus or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present application.

[0046] The terms "first", "second", etc. are used only for descriptive purposes and should not be construed as implying or suggesting relative importance or an indicated number of the technical features. Thus, the definition of "first", "second", etc. features can explicitly or implicitly include at least one of the features, i.e. one or more of the features. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise explicitly specified. When a certain feature "includes or comprises" a certain or certain features, unless otherwise specifically described, it indicates that other features are not excluded and can further include other features.

[0047] Unless otherwise explicitly specified and limited, the terms "mount", "connect", "connection", "fix", "couple" and the like should be understood in a broad sense, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. Those skilled in the art should be able to understand the specific meaning of the above terms in the present application according to the specific circumstances.

[0048] The present application provides a wall-mounted air conditioner indoor unit. The wall-mounted air conditioner indoor unit is the indoor part of a split wall-mounted room air conditioner, used to adjust indoor air, such as refrigeration / heat, dehumidification, purification, introduction of fresh air, etc.

[0049] Figure 1 is a structural schematic diagram of a wall-mounted air conditioner indoor unit according to an embodiment of the present application; Figure 2 is Figure 1 is an enlarged side view of the wall-mounted air conditioner indoor unit shown in Figure 3 is Figure 1 is an exploded schematic diagram of the air induction cylinder and fan in Figure 4 is Figure 3 is an exploded schematic diagram of the fan in Figure 5 is Figure 1 is a schematic diagram of the wall-mounted air conditioner indoor unit shown in when the air induction cylinder is rotated to an angle where the air outlet faces downward; Figure 6 is Figure 5 is an enlarged side view of the wall-mounted air conditioner indoor unit shown in. Among them, Figure 2 and Figure 6 Only the bottom air supply part structure of the shell 10 is cut, and the upper structure is not cut. Figure 2 , Figure 6 The flow direction of the heat exchange air flow is indicated by a solid arrow, and the flow direction of the indoor air is indicated by a hollow arrow.

[0050] As Figures 1 to 6As shown, the wall-mounted air conditioner indoor unit of the embodiment of the present application generally comprises a shell 10, two connecting arms 20 and an air guide duct 30.

[0051] The shell 10 has an air outlet 12 for allowing the heat exchange air flow to blow out. The heat exchange air flow is used for temperature adjustment of indoor air. Specifically, the heat exchange air flow is cold air when the air conditioner is in cooling operation; and the heat exchange air flow is hot air when the air conditioner is in heating operation. The air outlet 12 can be in the shape of a long strip whose length direction is parallel to the length direction of the shell 10 (i.e. transverse direction, which is parallel to the x-axis in the figure). Figure 1 And Figure 3 The x-axis in the figure).

[0052] Specifically, the wall-mounted air conditioner indoor unit uses a vapor compression refrigeration cycle system for cooling / heating. The interior of the shell 10 is provided with an indoor-side heat exchanger and an indoor-side fan (not shown). The indoor-side heat exchanger, a throttling device and a compressor, an outdoor-side heat exchanger and other refrigeration elements provided in an air conditioner outdoor unit are connected by pipelines to form a vapor compression refrigeration cycle system. Under the action of the indoor-side fan, indoor air enters the interior of the shell 10 through an air inlet of the shell 10, completes forced convection heat exchange with the indoor-side heat exchanger, forms a heat exchange air flow and enters an air duct, and then is blown to the indoor environment through the air outlet 12. A deflector 50 is provided at the air outlet 12 for guiding the direction of the air blown out. In addition, the deflector 50 can also be used to close the air outlet 12.

[0053] The two connecting arms 20 are arranged along the length direction of the shell 10 and are connected to the shell 10 respectively. Specifically, the connecting arms 20 can be connected to the shell 10 in a clamping or screwing manner. Alternatively, the connecting arms 20 and the shell 10 can be an integral piece.

[0054] The air guide duct 30 is provided outside the shell 10 and extends along the length direction of the shell 10. That is, the axial direction of the air guide duct 30 is parallel to the length direction of the shell 10, i.e. parallel to the x-axis. The peripheral wall of the air guide duct 30 is provided with an air outlet 32. As the name implies, the air guide duct 30 is a hollow cylindrical shape and communicates the inside and outside of the air guide duct 30 through the air outlet 32. The air outlet 32 is used for blowing out air flow. The air flow can be a mixture of one or more of indoor air, fresh air flow, purified air flow, humidified air flow, etc. The air flow can enter the interior of the air guide duct 30 from the axial end or the peripheral wall of the air guide duct 30. The two ends of the axial direction of the air guide duct 30 are rotatably mounted to the two connecting arms 20 (the rotation axis is x1, refer to the figure) respectively, so that the orientation of the air outlet 32 can be adjusted. For example, the air guide duct 30 can be adjusted to a position where the air outlet 32 faces forward, such as Figure 1 And Figure 1 And Figure 2 , the air guide duct 30 can also be adjusted to a position where the air outlet 32 faces downward, such as Figure 5 And Figure 6 .

[0055] In an alternative control mode, when the air conditioner is in the cooling mode, the outlet 32 is directed forward, and the fan 70 is turned on to induce the mixing of air. When the air conditioner is in the heating mode, the outlet 32 is directed downward, and only the induction channel 150 is used to induce the mixing of air.

[0056] In another alternative control mode, when the fan 70 is turned on to actively induce the mixing of air, the orientation of the outlet 32 can also be adjusted to adjust the angle at which the indoor air flows into the heat exchange airflow, thereby adjusting the mixing effect. The larger the angle, the closer the mixing point to the shell 10, and the stronger the mixing.

[0057] In the wall-mounted air conditioner indoor unit of the present application, in order to enhance the induction and mixing effect, an air induction cylinder 30 is additionally provided outside the shell 10. The outlet 32 of the air induction cylinder 30 is used to blow out the airflow, which mixes with the heat exchange airflow to form the induction and mixing effect. Moreover, the orientation of the outlet 32 can also be adjusted to adjust the angle at which the outlet 32 airflow flows into the heat exchange airflow, thereby adjusting the mixing effect. The larger the angle, the closer the mixing point to the shell 10, and the stronger the mixing.

[0058] In some embodiments, as shown in Figures 1 to 3 The circumferential wall of the air induction cylinder 30 can be provided with an air inlet 31, and the wall-mounted air conditioner indoor unit further comprises at least one fan 70. The fan 70 is arranged inside the air induction cylinder 30 to induce the indoor air outside the shell 10 to enter the air induction cylinder 30 through the air inlet 31, and then to be blown out through the outlet 32 to mix with the heat exchange airflow blown out from the air outlet 12. Under the action of the fan 70, a large amount of indoor air can be mixed into the heat exchange airflow, making the mixing amount larger and the induction and mixing effect more obvious. In the cooling mode, the temperature of the mixed air supply airflow is higher than that of the heat exchange airflow, forming a cool but not cold cooling effect. In the heating mode, the temperature of the mixed air supply airflow is lower than that of the heat exchange airflow, forming a hot but not dry heating effect, making the human body feel more comfortable. Moreover, the air volume of the fan 70 can be adjusted to adjust the mixing amount, and further adjust the temperature of the mixed airflow.

[0059] In some embodiments, as shown in Figure 3 The outlet 32 can be provided with an air guide grille 325. The air guide grille 325 can effectively guide the airflow, and also has the functions of protection, dust prevention, and decoration.

[0060] In some embodiments, as shown in Figure 3 The air induction cylinder 30 can comprise two half cylinders 301, 302, which are spliced and connected to form a complete air induction cylinder 30, so as to facilitate the installation of the fan 70.

[0061] In some embodiments, as shown in Figure 1 and Figure 2As shown, the air outlet 12 can be located at the bottom front side of the housing 10. The air duct 30 is disposed below the bottom wall 103 of the housing 10, defining an airflow channel 150 between itself and the bottom wall 103, allowing indoor air to flow forward through the airflow channel 150 to merge into the heat exchange airflow. Thus, when the fan 70 is turned on, driven by the indoor air blown out of the air outlet 32 ​​and the heat exchange airflow, the indoor air in the airflow channel 150 is also mixed with the heat exchange airflow, increasing the air mixing volume.

[0062] In some alternative embodiments, the air duct 30 may be fitted to the outer wall of the housing 10 so as not to define the aforementioned drainage channel 150.

[0063] Figure 4 yes Figure 3 An exploded view of the fan 70 in the diagram.

[0064] In some embodiments, such as Figure 3 and Figure 4 As shown, each fan 70 is a cross-flow fan, with its length direction parallel to the axial direction of the air intake duct 30. In this embodiment of the invention, the air intake duct 30 extends along the length of the housing 10, and the fans 70 are cross-flow fans. Utilizing the radial air intake and radial air outlet characteristics of the cross-flow fan, air is drawn in from the lower side of the circumferential wall of the air intake duct 30 and exited from the front, thus introducing indoor air precisely from below the housing 10 and blowing the indoor air forward to mix with the heat exchange airflow in front of the housing 10. Furthermore, the overall cylindrical shape of the cross-flow fan is more suitable for the shape of the air intake duct 30, making the overall airflow mixing structure more compact.

[0065] Specifically, such as Figure 4 As shown, each fan 70 includes a duct component 71 and a cross-flow impeller 72. The duct component 71 is disposed within the air intake duct 30, defining a cross-flow duct 701. The inlet and outlet of the cross-flow duct 701 are connected to an air inlet 31 and an air outlet 32, respectively. The cross-flow impeller 72 is disposed within the cross-flow duct 701. Furthermore, mounting portions 715 and 716 are provided at both axial ends of the duct component 71 for mounting a second motor 73 and a bearing 75, respectively. The cross-flow impeller 72 has shafts 723 at both axial ends; one shaft 723 is rotatably mounted to the bearing 75, and the other shaft 723 is connected to the second motor 73.

[0066] like Figure 4 As shown, the duct component 71 may include a separable volute tongue 712, which is detachably connected to the main body of the duct component 71 to facilitate the installation of the cross-flow impeller 72. Specifically, the volute tongue 712 is fitted with connecting posts 7121, each connecting post 7121 having a threaded hole that aligns with a hole 713 in the main body of the duct component 71, so that the volute tongue 712 can be installed on the main body of the duct component 71 using screws.

[0067] Obviously, in the embodiment shown in Figure 3 and Figure 4 In other embodiments, the entire or part of the air duct component 71 can be integrally formed with the air duct 30.

[0068] In some embodiments, the number of the air fans 70 can be multiple and arranged along the axial direction of the air duct 30. The multiple air fans 70 are arranged to facilitate the adjustment of the air mixing amount in a larger range. That is, the air mixing amount can be adjusted by adjusting the air volume of each air fan 70, and the air mixing amount can also be adjusted by adjusting the number of the air fans 70 turned on.

[0069] In some embodiments, the internal space of the air duct 30 can be formed into multiple sections along the axial direction, a part of the sections are provided with the air fans 70, and the other sections are connected to the air adjusting flow introduced into the casing 10 through the connecting arm 20 and make the air adjusting flow blow out through the air outlet 32. The air adjusting flow can be one or more of the air flows for adjusting air, such as fresh air flow, purified air flow, humidified air flow, etc. In this way, the air duct 30 can blow out both the heat exchange air flow and the air adjusting flow, serving as the air outlet component of the air adjusting flow, realizing the one thing with multiple uses of the air duct 30, and simplifying the overall structure of the wall-mounted air conditioner indoor unit.

[0070] For example, as shown in Figure 3 The air duct 30 can be internally provided with two partitions 305, dividing the internal space of the air duct 30 into three sections. The air inlet 31 and the air outlet 32 cover all the sections. The air fans 70 are arranged in two sections respectively. The other section (the section on the left side of the paper) is not provided with the air fan 70, and the end of the section is connected to the connecting arm 20, which has a supply air passage connected to the inside of the casing 10 to transport the air adjusting flow in the casing 10 to the section. Figure 3

[0071] Figure 7 is an exploded view of the wall-mounted air conditioner indoor unit shown in Figure 1 Figure 8 is an exploded view of the base 22 and its internal structure in Figure 7 Figure 9 is a further exploded view of Figure 7 Figure 10 is another angle view of Figure 9

[0072] In some embodiments, as shown in Figures 7 to 10 ​​​​​As shown, the wall-mounted air conditioner indoor unit further comprises a first motor 41, a first gear 42 and a second gear 43. The first motor 41 is mounted on the connecting arm 20. The first gear 42 is connected to the rotating shaft of the first motor 41. The second gear 43 is an internal gear, which is a gear with teeth formed on the inner ring of a ring structure. The second gear 43 is engaged with the first gear 42, and the second gear 43 is connected to the air duct 30. Obviously, the diameter and the number of teeth of the first gear 42 need to be smaller than those of the second gear 43 to achieve the function of speed reduction. In this way, when the first motor 41 operates, it drives the first gear 42 to rotate, the first gear 42 drives the second gear 43 to rotate, and the second gear 43 drives the air duct 30 to rotate. By setting the second gear 43 as an internal gear and locating the first gear 42 inside the second gear 43, the space occupied by the two gears can be saved.

[0073] Specifically, as shown in Figure 7 and Figure 10 , one axial end surface of the air duct 30 has a plurality of insertion holes 362, and the outer end surface of the second gear 43 has a plurality of insertion columns 431, each of which is inserted into one of the insertion holes 362 to achieve the connection between the air duct 30 and the second gear 43.

[0074] In some embodiments, as shown in Figure 7 , each connecting arm 20 comprises a decorative plate 21 and a base 22. Each connecting arm 20 comprises a decorative plate 21 and a base 22.

[0075] The decorative plate 21 extends vertically against the outer side of the transverse end cover 102 of the shell 10, and the top of the decorative plate 21 is bent to form a hooking section 212 for hooking the top surface 101 of the shell 10 (see Figure 1 ). The base 22 is connected to the lower part of the inner side 213 of the decorative plate 21 facing the end cover 102 for connection with the air duct 30. In this way, the base 22 is blocked inside the decorative plate 21, making the appearance of the wall-mounted air conditioner indoor unit more simple and beautiful. The decorative plate 21 and the shell 10, and the decorative plate 21 and the base 22 can be connected and fastened by screws or clamps.

[0076] Further, the bottom of each end cover 102 can have a notch downwardly to form a clearance slot 106 for accommodating at least part of the base 22. In this way, the base 22 can be designed large enough to better connect the air duct 30. Since part or all of the base 22 is hidden in the clearance slot 106, the appearance of the wall-mounted air conditioner indoor unit is less affected.

[0077] As shown in Figure 7 and Figure 10As shown, the axial ends of the air duct 30 are rotatably mounted in the mounting holes 220 of the two bases 22, and the first motor 41, the first gear 42 and the second gear 43 are arranged in the base 22. Specifically, the base 22 can include two halves 221, 222 which are spliced to form a complete base 22, and such design can facilitate the installation of the first motor 41, the first gear 42 and the second gear 43.

[0078] As shown in Figure 7 and Figure 10 The axial ends of the air duct 30 can be sleeved with the sleeve rings 37, and each sleeve ring 37 is in contact with the hole wall of the mounting hole 220, so that the sleeve ring 37 and the hole wall of the mounting hole 220 form a sliding friction relationship. The body of the air duct 30 can be made of plastic which is easy to manufacture and has low cost, and the sleeve ring 37 can be made of a material such as metal or ceramic which has higher cost but better wear resistance. As shown in Figure 7 The sleeve ring 37 is provided with a plurality of clamping holes 371, and the axial surface of the air duct 30 is provided with a plurality of buckles 361, each of which is clamped into a clamping hole 371 to achieve the fixed connection of the sleeve ring 37 and the air duct 30.

[0079] At this point, those skilled in the art should recognize that although the present application has been fully shown and described with reference to a plurality of exemplary embodiments, many other variations or modifications in accordance with the principles of the present application can be directly determined or deduced from the disclosure of the present application without departing from the spirit and scope of the present application. Therefore, the scope of the present application should be understood and recognized as covering all such other variations or modifications.

Claims

1. A wall-mounted air conditioner indoor unit, characterized in that... The wall-mounted air conditioner indoor unit comprises: a casing having an air outlet for allowing heat exchange air to blow out; two connecting arms arranged along the length direction of the casing and connected to the casing respectively; an air duct arranged outside the casing and extending along the length direction of the casing, a circumferential wall of the air duct being provided with an air outlet for blowing out air; and the axial ends of the air duct being rotatably mounted to the two connecting arms respectively so that the orientation of the air outlet can be adjusted; a first motor mounted to one of the connecting arms; a first gear connected to the rotating shaft of the first motor; a second gear being an internal gear and engaged with the first gear, the second gear being connected to the air duct so as to drive the air duct to rotate when the first motor operates; one axial end face of the air duct being provided with a plurality of insertion holes, and the outer end face of the second gear being provided with a plurality of insertion columns, each of the insertion columns being inserted into one of the insertion holes; a decorative plate vertically extending and abutting against the lateral end cover of the casing, a hook section being bent out at the top of the decorative plate so as to be hooked to the top surface of the casing; and a base connected to the inner side face of the decorative plate facing the end cover and used for connecting with the air duct; the axial ends of the air duct being rotatably mounted to the mounting holes of the two bases respectively, the first motor, the first gear and the second gear being arranged in the base; the circumferential wall of the air duct being provided with an air inlet; the wall-mounted air conditioner indoor unit further comprises at least one fan arranged inside the air duct for introducing indoor air outside the casing into the air duct through the air inlet and then blowing out through the air outlet so as to be mixed into the heat exchange air blown out from the air outlet; the internal space of the air duct is divided into a plurality of sections along the axial direction, a part of the sections being provided with the fans, and the other sections being provided with the adjusting air flow introduced into the casing through the connecting arms and then blown out through the air outlet.

2. The wall-mounted air conditioner indoor unit according to claim 1, wherein a sleeve ring is sleeved on each of the axial ends of the air duct, and each of the sleeve rings is in contact with the hole wall of the mounting hole.

3. The wall-mounted air conditioner indoor unit according to claim 1, wherein each of the fans is a cross-flow fan, and the length direction of the cross-flow fan is parallel to the axial direction of the air duct.

4. The wall-mounted air conditioner indoor unit according to claim 2, wherein the number of the fans is plural, and the fans are arranged along the axial direction of the air duct. Each of the fans comprises:

5. The wall-mounted air conditioner indoor unit according to claim 2, characterized in that, an air duct component arranged in the air duct and defining a cross-flow air duct, the inlet and outlet of the cross-flow air duct being communicated with the air inlet and the air outlet respectively; and a cross-flow fan wheel arranged in the cross-flow air duct. ​

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