Indoor unit of a wall-mounted air conditioner

Abstract

The application relates to a hanging type air conditioner indoor unit, belonging to the air conditioning technical field. The hanging type air conditioner indoor unit comprises a machine shell, an indoor heat exchanger, a cross-flow fan, a fresh air shell, a fresh air fan and a fresh air outlet pipe. The top and front bottom of the machine shell are respectively provided with an indoor air inlet and an indoor air outlet. An air outlet air duct is defined in the machine shell. The machine shell comprises a volute tongue for surrounding the air outlet air duct. A fresh air fan cavity in communication with the outdoor is formed in the fresh air shell. The fresh air fan is arranged in the fresh air fan cavity. A first fresh air outlet is arranged on the volute tongue. The first fresh air outlet is arranged close to the indoor air outlet. Under the action of the fresh air fan, the outdoor air in the fresh air fan cavity is guided to the first fresh air outlet through the fresh air outlet pipe. The fresh air flowing out of the first fresh air outlet is mixed with the airflow after heat exchange in the air outlet air duct and is discharged through the indoor air outlet.

Description

Technical Field

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

[0002] In wall-mounted air conditioner indoor units, indoor airflow is drawn in through the indoor air inlet by a cross-flow fan, undergoes heat exchange, and is then delivered into the room through the indoor air outlet. To improve indoor air quality, wall-mounted air conditioner indoor units typically integrate a fresh air function, with outdoor fresh air being exhausted into the room through a first fresh air outlet.

[0003] In existing technologies, to make the fresh air function visible, the first fresh air outlet is usually placed on the front of the indoor unit of the air conditioner, above the indoor air outlet. Users can then directly perceive the fresh air function and confirm that it is activated. However, this location means the first fresh air outlet is too close to the indoor air outlet. When the fresh air flows out along the wall, most of the airflow blows directly at the user, with only the lower part briefly contacting the indoor airflow from the indoor air outlet. This prevents sufficient and effective mixing of the fresh air with the heat-exchanged indoor air. Especially in cold winters or hot summers, the temperature difference between the fresh air outlet and the air conditioner outlet is significant. The unmixed hot and cold airflows directly reach the user, causing a noticeable temperature shock and poor comfort.

[0004] Therefore, in the existing technology, the fresh air outlet method of the indoor unit of a wall-mounted air conditioner cannot well meet the needs of users. Utility Model Content

[0005] This application addresses, to at least some extent, one of the technical problems in the related art.

[0006] Therefore, this application aims to provide a wall-mounted air conditioner indoor unit that allows fresh air to first meet and fully mix with the indoor airflow that has been heated by the indoor heat exchanger in the air outlet duct, and then be sent out from the indoor air outlet together. With the help of the momentum and temperature buffer of the indoor airflow, the fresh air is quickly neutralized, the overall air outlet temperature is more uniform, which can significantly reduce the thermal shock caused by direct fresh air blowing and improve user comfort.

[0007] To achieve the above objectives, this application provides a wall-mounted air conditioner indoor unit, comprising: The housing has an indoor air inlet and an indoor air outlet at its top and front bottom, respectively. An air outlet duct is defined inside the housing, and the housing includes a volute for forming the air outlet duct. An indoor heat exchanger is disposed inside the casing and near the indoor air inlet to exchange heat with the air inside the casing. A cross-flow fan is located on the leeward side of the indoor heat exchanger and at the air inlet of the air outlet duct. The axial direction of the cross-flow fan is arranged along the length of the casing. The air outlet duct is used to guide the airflow after heat exchange to the indoor air outlet. The fresh air housing and the cross-flow fan are arranged along the length of the housing, and a fresh air fan cavity that can communicate with the outside is formed inside the fresh air housing; A fresh air fan is installed in the fresh air fan cavity; A first fresh air outlet is disposed through the volute tongue and is located close to the indoor air outlet. A fresh air outlet duct is provided inside the housing, and the fresh air outlet duct connects the fresh air fan cavity and the first fresh air outlet. Under the action of the fresh air fan, the outdoor air in the fresh air fan cavity is guided to the first fresh air outlet through the fresh air outlet duct. The fresh air flowing out of the first fresh air outlet mixes with the heat-exchanged airflow in the outlet duct and flows out through the indoor air outlet.

[0008] In this technical solution, the first fresh air outlet is located on the volute. When the cross-flow fan and fresh air fan are turned on, the fresh air fan rotates, drawing outdoor fresh air into the fresh air outlet duct, which then discharges it from the first fresh air outlet. The cross-flow fan draws indoor air into the unit casing, where it is heated by the indoor heat exchanger and then guided to the indoor outlet through the air duct. Due to the faster indoor airflow velocity and slower fresh air velocity, the fresh air is drawn into the indoor airflow during its flow due to the siphon effect, mixing evenly with the indoor airflow before being discharged from the indoor outlet. Compared to the prior art where the first fresh air outlet is located on the front of the unit casing, the mixing of fresh air and indoor airflow is more uniform, preventing discomfort caused by overheating or cooling of the fresh air. Furthermore, the fresh air can quickly diffuse into the room with the indoor airflow, thereby rapidly improving indoor air quality.

[0009] In some embodiments of this application, the fresh air outlet duct includes: An air outlet extends along the length of the housing, and the air outlet is provided with a second fresh air outlet that is opposite to and communicates with the first fresh air outlet. The connecting part has one end connected to the volute air outlet of the fresh air housing and the other end connected to one end of the air outlet in the length direction.

[0010] In this technical solution, by defining the extension direction of the air outlet, the extension direction of the second fresh air outlet is specified, thereby increasing the axial distance for mixing the fresh air with the indoor airflow. Along the length of the casing, the fresh air can continuously contact and mix with the indoor airflow, significantly improving the uniformity of mixing. The addition of a connecting section allows for more flexible positioning of the fresh air outlet duct and the fresh air casing within the casing, facilitating full utilization of the internal space during production design.

[0011] In some embodiments of this application, an airflow channel communicating with the second fresh air outlet is formed in the air outlet section, and the airflow channel is gradually narrowed from bottom to top along the height direction of the casing.

[0012] In the technical solution, the specific structural shape of the air outlet is defined by restricting the shape of the airflow channel. On the cross section perpendicular to the length direction of the casing, the side of the air outlet away from the indoor air outlet is triangular. Since the triangle has stability, the structural strength of the air outlet is increased by limiting the shape of the air outlet, so that the overall structure of the air outlet does not change when a large amount of fresh air is discharged from the second fresh air outlet through the airflow channel.

[0013] In some embodiments of this application, the housing further includes: A base, on which the volute tongue is disposed; An outer cover is installed on the base, and the indoor air inlet and the indoor air outlet are located on the outer cover; The first water receiving tray is located on the side of the volute tongue away from the air outlet duct. The first water receiving tray, the volute tongue, and the outer cover form an installation cavity, and the air outlet is installed in the installation cavity.

[0014] In the technical solution, by setting an installation cavity in the casing to independently place the fresh air outlet duct, the compactness of the overall internal structure of the casing is maintained, while the simplicity and aesthetics of the overall design are preserved. By placing the first water collection tray on the side of the fresh air outlet duct away from the indoor air outlet, the first water collection tray can collect the condensate produced by the indoor heat exchanger, preventing the condensate dripping from the indoor heat exchanger from seeping into the first fresh air outlet, eliminating the phenomenon of water blowing from the indoor air outlet, and improving the user experience.

[0015] In some embodiments of this application, the first fresh air outlet is an elongated opening extending along the length of the housing.

[0016] In the technical solution, the shape of the first fresh air outlet is defined to maximize its area, thereby enabling a larger air volume to be delivered and quickly improve indoor air quality; at the same time, the mixing rate of fresh air and indoor airflow is increased to achieve rapid adjustment of fresh air temperature.

[0017] In some embodiments of this application, a wind deflector is further included, which is rotatably connected to the housing and is used to block or open the first fresh air outlet. The rotation axis of the wind deflector extends along the length of the housing.

[0018] In the technical solution, a baffle is set to enable independent switching of the fresh air function. When the fresh air function is not needed, the baffle can close the first fresh air outlet to prevent fresh air backflow and reduce the cooling or heating efficiency of the indoor air conditioner.

[0019] In some embodiments of this application, a rotary motor is installed inside the housing, and the rotary motor is connected to the wind deflector to drive the wind deflector to rotate.

[0020] In the technical solution, by setting up a rotary motor, users can automatically open and close the wind deflector without manual intervention, simply by operating a remote control or other devices. This not only prevents backflow of fresh air but also allows the fresh air function to be started and stopped as needed, improving ease of use and sealing reliability.

[0021] In some embodiments of this application, the housing defines a receiving cavity for mounting the rotary motor. The receiving cavity is located on the side of the cross-flow fan away from the fresh air housing. One end of the baffle plate in the longitudinal direction is rotatably connected to the volute tongue via a rotating shaft, and the other end is provided with a connecting rod extending to the receiving cavity. The connecting rod is connected to the rotary motor.

[0022] In the technical solution, by setting up a receiving cavity, the rotary motor can be hidden in the receiving cavity inside the housing, thereby maintaining the cleanliness and aesthetics of the inside of the housing; at the same time, it prevents the indoor airflow from passing through the rotary motor during circulation, which would affect the normal operation of the rotary motor.

[0023] In some embodiments of this application, it further includes: A first drive motor is connected to one end of the cross-flow fan near the fresh air housing, and is used to drive the cross-flow fan to rotate; The second drive motor is located inside the fresh air fan cavity and connected to the fresh air fan, and is used to drive the fresh air fan to rotate.

[0024] In the technical solution, by setting a first drive motor and a second drive motor, independent control of the cross-flow fan and the fresh air fan can be achieved, thereby improving operational flexibility and operational reliability.

[0025] In some embodiments of this application, a mixing air guide plate is further included. The mixing air guide plate is rotatably connected to the housing and extends along the length of the housing. The mixing air guide plate is located on the side of the volute tongue facing the indoor air outlet, and is used to adjust the airflow direction of fresh air and / or mixed air.

[0026] In the technical solution, a rotatable air mixing guide plate is set to control the flow direction of fresh air, indoor airflow and mixed air to meet user needs.

[0027] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of a wall-mounted air conditioner indoor unit according to an embodiment of this application; Figure 2 This is a schematic diagram of the indoor air outlet structure of the hidden wind deflector according to an embodiment of this application; Figure 3 This is a front view of the indoor unit of a wall-mounted air conditioner according to an embodiment of this application; Figure 4 This is an embodiment based on the present application. Figure 3 A schematic diagram of the cross-sectional structure of AA; Figure 5 This is an embodiment based on the present application. Figure 4 Enlarged view of point A in the middle; Figure 6 This is a schematic diagram of the fresh air module structure according to an embodiment of this application; Figure 7 This is an embodiment based on the present application. Figure 6 Enlarged view of point B in the middle; Figure 8 This is a schematic diagram of the structure of the fresh air casing according to an embodiment of this application; Figure 9 This is a schematic diagram of the position structure of the air mixing guide plate according to an embodiment of this application; Figure 10 This is a schematic diagram of the indoor air outlet structure of the display baffle according to an embodiment of this application.

[0029] In the above figures: 100, casing; 200, air outlet duct; 300, indoor heat exchanger; 400, cross-flow fan; 500, volute; 600, fresh air casing; 700, air outlet; 800, connecting part; 101. Indoor air inlet; 102. Indoor air outlet; 103. First fresh air outlet; 104. Volute; 105. Outer casing; 106. First drip tray; 107. Mixing air guide plate; 108. Connecting shaft; 109. Connecting plate; 501. Air intake section; 502. Air outlet section; 601. First fresh air housing; 602. Second fresh air housing; 603. Third fresh air housing; 604. Air inlet duct; 605. Filter track; 701. Second fresh air outlet; 702. Reinforcing hole; 703. Baffle plate; 704. Rotary motor; 705. Connecting rod. Detailed Implementation

[0030] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, 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, and therefore should not be construed as a limitation of this application. In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," 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, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature. In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0031] The present application will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments. In the following, embodiments of this application will be described in detail with reference to the accompanying drawings. As attached Figures 1 to 5 As shown in an illustrative embodiment of the wall-mounted air conditioner indoor unit of this application, the wall-mounted air conditioner indoor unit may include a housing 100, which forms the overall appearance of the wall-mounted air conditioner indoor unit. The housing 100 is installed on the wall of the indoor air conditioner. Taking the direction from which the user faces the wall-mounted air conditioner indoor unit as a reference, the side of the housing 100 away from the wall is defined as the front side, and the side opposite to the front side is defined as the rear side. The front and rear sides of the housing 100 are the two sides provided in the width direction; the top and bottom of the housing 100 are the two ends provided in the height direction when it is hung on the wall or other structure; and the side of the housing 100 closer to the ground is defined as the bottom.

[0032] In some embodiments, the housing 100 may include an indoor air inlet 101 located at the top of the housing 100, which is used to allow indoor airflow to enter.

[0033] In some embodiments, the housing 100 may include an indoor air outlet 102, which is located at the bottom front side of the housing 100 and is used to allow airflow from inside the housing 100 to flow into the room.

[0034] In some embodiments, as shown in the appendix Figure 4 As shown, the housing 100 includes an air outlet duct 200, and the housing 100 may include a volute 500 for forming the air outlet duct 200. The air outlet duct 200 is used to guide the heat-exchanged airflow to the indoor air outlet 102. The volute 500 forms the front duct wall of the air outlet duct 200.

[0035] In some embodiments, the indoor unit of a wall-mounted air conditioner may include an indoor heat exchanger 300, which is disposed inside the casing 100 and near the indoor air inlet 101 to exchange heat with the air inside the casing 100.

[0036] In some embodiments, the indoor unit of a wall-mounted air conditioner may include a cross-flow fan 400, which is located on the leeward side of the indoor heat exchanger 300 and is disposed at the air inlet end of the air outlet duct 200. Under the action of the cross-flow fan 400, indoor airflow enters the casing 100 through the indoor air inlet 101, undergoes heat exchange through the indoor heat exchanger 300, and is then guided by the air outlet duct 200 to the indoor air outlet 102 for discharge. The axial direction of the cross-flow fan 400 is arranged along the length of the casing 100.

[0037] To improve indoor air quality, as shown in the attached document Figure 2 As shown, in some embodiments of this application, the indoor unit of the wall-mounted air conditioner may include a fresh air module, which is disposed in the housing 100 and is used to introduce outdoor fresh air into the room.

[0038] The casing 100 may include a first fresh air outlet 103 for delivering outdoor fresh air. The fresh air module connects the outdoor environment with the first fresh air outlet 103 so that outdoor fresh air flows through the fresh air module to the first fresh air outlet 103 and flows out through the first fresh air outlet 103.

[0039] In the relevant technology, the first fresh air outlet 103 is located at the front of the indoor unit of the air conditioner. The indoor airflow enters from the indoor air inlet 101 under the drive of the cross-flow fan 400, exchanges heat with the indoor heat exchanger, and then enters the air outlet duct 200, and then flows out from the indoor air outlet 102, which is located below the first fresh air outlet 103. When the fresh air mode is turned on, fresh air flows out from the first fresh air outlet 103. Since the contact area between the fresh air and the indoor airflow is small, only a small amount of fresh air near the indoor air outlet 102 is attracted into the indoor airflow under the siphon effect, mixes with the indoor airflow, and is blown into the room. The majority of the fresh air flows out from the first fresh air outlet 103 and is blown directly to the user. When the weather is cold in winter or hot in summer, the temperature of the fresh air outlet is opposite to that of the air conditioner outlet. Therefore, when the fresh air mode is turned on, due to the poor uniformity of air mixing, most of the fresh air is blown directly into the room from the first fresh air outlet. Users can feel the two different temperatures of airflow, which can be impactful and cause discomfort.

[0040] Based on this, in some embodiments of this application, the first fresh air outlet 103 is opened on the volute tongue 500, so that the first fresh air outlet 103 flows into the air outlet duct 200.

[0041] As attached Figure 4 and attached Figure 5 As shown, the first fresh air outlet 103 is located between the cross-flow fan 400 and the indoor air outlet 102, and the first fresh air outlet 103 is positioned close to the indoor air outlet 102. The high-speed indoor airflow quickly draws in the low-speed fresh air flowing out of the first fresh air outlet 103 and mixes it thoroughly. Furthermore, because the first fresh air outlet 103 is close to the indoor air outlet 102, the fresh air and the indoor airflow after heat exchange meet at a large angle and a long overlap section at the end of the air outlet duct, significantly expanding the effective mixing area, thereby improving the mixing uniformity and user comfort.

[0042] In some embodiments, as shown in Appendix 6 to Figure 8As shown, the indoor unit of the wall-mounted air conditioner may include a fresh air housing 600, which is located inside the housing 100. The fresh air housing 600 and the cross-flow fan 400 are arranged along the length of the housing 100. A fresh air fan cavity that can communicate with the outside is formed inside the fresh air housing 600.

[0043] In some embodiments, the fresh air housing 600 may include a fresh air inlet that is connected to the outside so that outdoor air enters the fresh air fan cavity through the fresh air inlet.

[0044] In some embodiments, the indoor unit of the wall-mounted air conditioner may include a fresh air outlet duct, which is disposed inside the housing 100. The fresh air housing 600 may include a volute air outlet, and the fresh air outlet duct is connected to the volute air outlet, thereby connecting the fresh air fan cavity and the first fresh air outlet 103.

[0045] In some embodiments, the indoor unit of the wall-mounted air conditioner may include a fresh air fan disposed in a fresh air fan cavity. The fresh air fan is used to bring outdoor fresh air into the unit casing 100 and provide power for the fresh air flow. After the outdoor fresh air is discharged from the first fresh air outlet 103, it mixes with the indoor airflow to form mixed air, which is then discharged into the room through the indoor air outlet 102.

[0046] In some embodiments, the indoor unit of the wall-mounted air conditioner may further include a first drive motor, which is connected to one end of the cross-flow fan 400 near the fresh air housing 600. The first drive motor is used to drive the cross-flow fan 400 to rotate.

[0047] In some embodiments, the indoor unit of the wall-mounted air conditioner may further include a second drive motor, which is located inside the fresh air fan cavity and connected to the fresh air fan, for driving the fresh air fan to rotate. By separating the first drive motor and the second drive motor, the cross-flow fan 400 and the fresh air fan can be controlled independently, thereby improving operational flexibility and operational reliability.

[0048] In some embodiments, as shown in the appendix Figure 6 and Figure 7 As shown, the fresh air outlet duct may include an air outlet 700, which extends along the length of the housing 100. The air outlet 700 is provided with a second fresh air outlet 701 that is opposite to and communicates with the first fresh air outlet 103.

[0049] In some embodiments, the fresh air outlet duct may include a connecting portion 800, one end of which is connected to the volute outlet of the fresh air housing 600, and the other end is connected to one end of the outlet section 700 along its length, so that outdoor fresh air can smoothly enter the outlet section 700 through the connecting portion 800 to ensure the fresh air volume. By providing the connecting portion 800, the positional design of the fresh air outlet duct and the fresh air housing 600 within the housing 100 is more flexible, so as to make full use of the internal space of the housing 100 during production design.

[0050] In some embodiments, an airflow channel communicating with the second fresh air outlet 701 is formed within the air outlet 700. The airflow channel gradually narrows from bottom to top along the height direction of the housing 100. That is, the width of the airflow channel gradually decreases along the height direction of the housing 100, and the distance between the two side walls of the air outlet 700 in the width direction of the housing 100 gradually decreases until they intersect in a line. Let the cross section of the air outlet 700 perpendicular to the length direction of the housing 100 be the first cross section. In the first cross section, the side of the air outlet 700 away from the indoor air outlet 102 is triangular. Since triangles have stability, by defining the shape of the air outlet 700, the structural strength of the air outlet 700 is increased, so that when a large amount of fresh air is discharged from the second fresh air outlet 701 through the airflow channel, the overall structure of the air outlet 700 does not change.

[0051] In some embodiments, as shown in the appendix Figure 9 As shown, the air outlet 700 has a reinforcing hole 702 extending through the width of the housing 100. The reinforcing hole 702 is located near the side of the air outlet 700 away from the indoor air outlet 102, and the inner wall of the air outlet 700 is connected to the edge of the reinforcing hole 702. By providing the reinforcing hole 702, the structural strength of the air outlet 700 is further enhanced.

[0052] In some embodiments, multiple reinforcing holes 702 may be provided at intervals.

[0053] In some embodiments, the air outlet 700 is provided with reinforcing ribs, which are located on the inner wall of the air outlet 700 and are arranged along the length of the air outlet 700. By providing reinforcing ribs, the overall structural strength of the air outlet 700 is further enhanced. When fresh air passes through the airflow channel at high speed, the reinforcing ribs suppress the high-frequency vibration of the air outlet 700 under high wind speed, thereby reducing operating wind noise.

[0054] In some embodiments, the indoor unit of the wall-mounted air conditioner may further include a baffle plate 703, which is rotatably connected to the housing 100 and used to block or open the first fresh air outlet 103. The rotation axis of the baffle plate 703 extends along the length of the housing 100. By setting the baffle plate 703, the first fresh air outlet 103 can be in two states: closed and open. When the fresh air mode is not required, the baffle plate 703 can close the first fresh air outlet 103 to avoid affecting the cooling or heating of the indoor unit of the wall-mounted air conditioner.

[0055] In some embodiments, as shown in the appendix Figure 7 As shown, a rotary motor 704 is installed inside the housing 100. The rotary motor 704 is connected to the baffle plate 703 and is used to drive the baffle plate 703 to rotate. By setting up the rotary motor 704, the user can operate the rotary motor 704 to control the rotation of the baffle plate 703 and thus control the opening of the first fresh air outlet 103 without manual intervention, thereby improving the convenience of use and the reliability of sealing.

[0056] In some embodiments, the housing 100 defines a receiving cavity for mounting a rotary motor 704. The receiving cavity is located on the side of the cross-flow fan 400 away from the fresh air housing 600. One end of the baffle plate 703 in the longitudinal direction is rotatably connected to the volute tongue 500 via a rotating shaft, and the other end is provided with a connecting rod 705 extending to the receiving cavity. The connecting rod 705 is connected to the rotary motor 704.

[0057] By setting up a receiving cavity, the rotary motor can be hidden inside the housing, thus maintaining the cleanliness and aesthetics of the housing interior; at the same time, it prevents indoor airflow from passing through the rotary motor during circulation, which would affect the normal operation of the rotary motor.

[0058] When the user activates the fresh air mode, the rotary motor 704 drives the connecting rod 705 to rotate, causing the baffle 703 to rotate and open the first fresh air outlet 103. The fresh air fan then draws outdoor fresh air into the fresh air fan chamber through the air inlet duct 604, and then sequentially into the room through the second fresh air outlet 701, the first fresh air outlet 103, and the indoor air outlet 102. At this time, the cross-flow fan 400 stops, and the indoor unit of the wall-mounted air conditioner only brings fresh air into the room, thereby improving indoor air quality.

[0059] When the user starts the normal mode alone, the baffle 703 blocks the first fresh air outlet 103, the rotary motor 704 and the fresh air fan do not run, and the cross-flow fan 400 starts so that the indoor airflow enters the air outlet duct 200 through the indoor air inlet 101, and after heat exchange by the indoor heat exchanger 300, it is discharged from the indoor air outlet 102 to cool or heat the room.

[0060] When the fresh air module is started, the fresh air fan rotates and brings outdoor fresh air into the fresh air fan cavity from the air inlet duct 604. The fresh air is then discharged from the second fresh air outlet 701 through the airflow channel. Under the action of the wind, the wind baffle 703 rotates, causing the first fresh air outlet 103 to open. Fresh air flows out through the first fresh air outlet 103 and finally enters the room through the indoor air outlet 102.

[0061] When the user simultaneously activates both the normal mode and the fresh air mode, the rotary motor 704 drives the baffle 703 to rotate, opening the first fresh air outlet 103. The fresh air fan and the cross-flow fan 400 are then activated. Outdoor fresh air flows out from the first fresh air outlet 103 through the airflow channel, while indoor air flows out through the air outlet duct 200. The two airflows mix at the indoor air outlet 102 and are then discharged from the outdoor air outlet, thus regulating the fresh air outlet temperature and making the fresh air outlet more uniform, thereby enhancing the user experience.

[0062] In some embodiments, as shown in the appendix Figure 4 and Figure 5 As shown, the housing 100 may also include a base, on which the volute 500 is disposed. During installation, the base is typically fixedly connected to the wall, thereby mounting the indoor unit of the wall-mounted air conditioner on the wall.

[0063] In some embodiments, the base may include a volute 104, with one end of the volute 104 extending away from the indoor air outlet 102 to connect with the indoor heat exchanger 300. The volute 104 is disposed opposite to the volute tongue 500, and an air outlet duct 200 is formed between the volute 104 and the volute tongue 500. The volute 104 forms the rear duct wall of the air outlet duct 200.

[0064] In some embodiments, the housing 100 may further include an outer cover 105, which is disposed on the base. The outer cover 105 and the base are connected to define an installation space, in which the indoor heat exchanger 300, the cross-flow fan 400, and the fresh air module are disposed. As shown in the attached diagram... Figure 4 As shown, the indoor air inlet 101 and the indoor air outlet 102 are located on the outer cover 105.

[0065] In some embodiments, the housing 100 may include a first drip tray 106, which is disposed on the side of the volute 500 away from the air outlet duct 200. The first drip tray 106 is used to collect and drain the condensate generated by the indoor heat exchanger 300 during the operation of the indoor unit of the wall-mounted air conditioner. The first drip tray 106, the volute 500, and the outer cover 105 enclose a mounting cavity, and the air outlet 700 is installed in the mounting cavity.

[0066] By setting an installation cavity in the casing to independently place the fresh air outlet duct, the compactness of the overall internal structure of the casing 100 is maintained, while the simplicity and aesthetics of the overall design are preserved. By placing the first water collection tray 106 on the side of the fresh air outlet duct away from the indoor air outlet 102, the first water collection tray 106 can collect the condensate generated by the indoor heat exchanger 300, preventing the condensate dripping from the indoor heat exchanger 300 from seeping into the first fresh air outlet 103, causing the condensate to slide out of the indoor air outlet 102 and affecting the user experience.

[0067] In some embodiments, the first fresh air outlet 103 is located on the side of the air outlet end of the air outlet duct 200 away from the indoor air outlet 102. When the user turns on the indoor unit of the wall-mounted air conditioner for cooling or heating, the rotary motor 704 drives the baffle 703 to rotate, thereby opening the first fresh air outlet 103. This allows the outdoor fresh air to mix with the heat-exchanged indoor airflow before flowing out of the indoor air outlet 102. Driven by the indoor airflow, the fresh air flows out of the indoor air outlet 102, thereby regulating the temperature of the fresh air and preventing discomfort caused by the fresh air being too cold or too hot. By allowing the fresh air to be blown out with the indoor airflow, the fresh air outlet becomes more uniform, which is conducive to the rapid diffusion of fresh air into the room, thereby enhancing the user experience.

[0068] In some embodiments, as shown in the appendix Figure 5 As shown, the end of the volute 500 away from the cross-flow fan 400 extends to connect with the top edge of the indoor air outlet 102. The volute 500 may include an air inlet section 501. In the flow path of indoor airflow from the indoor air inlet to the indoor air outlet, the air inlet section 501 corresponds to the air inlet end of the air outlet duct 200 and is located close to the indoor air inlet 101. The cross-flow fan 400 is installed in the air outlet duct area corresponding to the air inlet section 501.

[0069] In some embodiments, the volute 500 may include an air outlet section 502, which is connected between the air inlet section 501 and the indoor air outlet 102. A first fresh air outlet 103 is located on the air outlet section 502.

[0070] The indoor air outlet 102 is located at the bottom front side of the casing 100. The end of the air outlet section 502 away from the air inlet section 501 extends towards the indoor air outlet 102, causing one end of the air outlet section 502 to extend at an angle towards the rear side of the casing 100, thereby defining the tilt direction of the first fresh air outlet 103. This causes the outdoor fresh air blown out from the first fresh air outlet 103 to be blown towards the bottom rear side of the casing 100, increasing the contact area between the fresh air and the indoor airflow. This causes the fresh air to cross the flow direction with the indoor airflow flowing out from the air outlet duct 200, thereby further improving the uniformity of the mixing of outdoor fresh air and indoor airflow and avoiding discomfort caused to the human body by the fresh air being too hot or too cold.

[0071] In some embodiments, as shown in the appendix Figure 9 and attached Figure 10 As shown, the second fresh air outlet 701 is an elongated opening extending along the length of the casing 100. By restricting the shape of the second fresh air outlet 701, the shape of the second fresh air outlet 701 is made to match the shape of the side of the air outlet 700 near the indoor air outlet 102, thus maximizing the area of ​​the first and second fresh air outlets 701, thereby enabling a larger volume of fresh air to be delivered, quickly improving indoor air quality; at the same time, it increases the mixing rate of fresh air with indoor airflow, so as to achieve rapid adjustment of fresh air temperature.

[0072] In some embodiments, the housing 100 may include a mixing air guide plate 107, which is disposed along the length of the housing 100 and rotatably connected to the housing 100. The mixing air guide plate 107 is located on the side of the volute tongue 500 facing the indoor air outlet 102, and is used to change the air outlet direction of fresh air, indoor airflow, or mixed air to meet user needs.

[0073] In some embodiments, to increase the stability of the air mixing guide plate 107 during rotation, a connecting shaft 108 is provided on one side of the air mixing guide plate 107, and a connecting plate 109 is provided on the side of the volute tongue 500 near the indoor air outlet 102. The connecting plate 109 has a connecting hole for the connecting shaft 108 to pass through. During installation, the air mixing guide plate 107 is rotatably connected to the housing 100 along its axis, and the connecting shaft 108 passes through the connecting hole, so that the air mixing guide plate 107 and the connecting plate 109 are rotatably connected.

[0074] In some embodiments, in the length direction of the first fresh air outlet 103, the connecting plate 109 is located in the middle of the first fresh air outlet 103, and the connecting shaft 108 is correspondingly arranged in the middle of the mixing air guide plate 107, so that the middle of the mixing air guide plate 107 is connected to the volute tongue 500, thereby strengthening the connection strength between the mixing air guide plate 107 and the housing 100, increasing the stability of the mixing air guide plate 107 when rotating, and reducing the possibility of deformation of the mixing air guide plate 107 under its own weight due to the small support force in the middle of the mixing air guide plate 107 caused by its length.

[0075] In some embodiments, as shown in the appendix Figure 8 As shown, the fresh air housing 600 may include a first fresh air housing 601, which is disposed inside the housing 100.

[0076] In some embodiments, the fresh air housing 600 may include a second fresh air housing 602, which is connected to the first fresh air housing 601, and a fresh air fan is located between the first fresh air housing 601 and the second fresh air housing 602.

[0077] In some embodiments, the fresh air housing 600 may include a third fresh air housing 603, which is connected to the second fresh air housing 602 on the side away from the first fresh air housing 601. A fresh air inlet is provided at the connection between the third fresh air housing 603 and the second fresh air housing 602, and the fresh air inlet is located on the side of the third fresh air housing 603 near the bottom of the housing 100. The fresh air inlet is used to allow outdoor air to enter the fresh air housing.

[0078] In some embodiments, as shown in the appendix Figure 8 As shown, an air inlet duct 604 is installed at the fresh air inlet. One end of the air inlet duct 604 is located at the fresh air inlet, and the other end of the air inlet duct 604 is connected to the outside. The air inlet duct 604 can be a bend to facilitate connection to the outside.

[0079] In some embodiments, the fresh air fan cavity may include a first cavity formed by a third fresh air housing 603 and a second fresh air housing 602, and a second cavity formed by the second fresh air housing 602 and the first fresh air housing 601.

[0080] In some embodiments, a filter screen is provided in the fresh air fan cavity. The filter screen is located between the second fresh air housing 602 and the third fresh air housing 603. A filter screen opening for inserting the filter screen is formed between the second fresh air housing 602 and the third fresh air housing 603. The second fresh air housing 602 is provided with a filter screen track 605. The filter screen track 605 and the fresh air inlet are both located on the side of the second fresh air housing 602 near the indoor air outlet 102. The filter screen track 605 is located on the side of the fresh air inlet near the first fresh air housing 601.

[0081] Under the action of the fresh air fan, outdoor fresh air enters the first chamber through the fresh air inlet duct 604, enters the second chamber through the filter, and is then guided to the first fresh air outlet 103 through the fresh air outlet duct. The fresh air flowing out of the first fresh air outlet 103 mixes with the heat-exchanged airflow in the air outlet duct 200 and is discharged into the room through the indoor air outlet 102.

[0082] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A wall-mounted air conditioner indoor unit, characterized in that, It includes: The housing has an indoor air inlet and an indoor air outlet at its top and front bottom, respectively. An air outlet duct is defined inside the housing, and the housing includes a volute for forming the air outlet duct. An indoor heat exchanger is disposed inside the casing and near the indoor air inlet to exchange heat with the air inside the casing. A cross-flow fan is located on the leeward side of the indoor heat exchanger and at the air inlet of the air outlet duct. The axial direction of the cross-flow fan is arranged along the length of the casing. The air outlet duct is used to guide the airflow after heat exchange to the indoor air outlet. The fresh air housing and the cross-flow fan are arranged along the length of the housing, and a fresh air fan cavity that can communicate with the outside is formed inside the fresh air housing; A fresh air fan is installed in the fresh air fan cavity; The first fresh air outlet is disposed through the volute tongue and located between the cross-flow fan and the indoor air outlet, and the first fresh air outlet is located close to the indoor air outlet. A fresh air outlet duct is provided inside the housing, and the fresh air outlet duct connects the fresh air fan cavity and the first fresh air outlet. Under the action of the fresh air fan, the outdoor fresh air in the fresh air fan cavity is guided to the first fresh air outlet through the fresh air outlet duct. The fresh air flowing out of the first fresh air outlet is mixed with the heat-exchanged airflow in the outlet duct and flows out through the indoor air outlet.

2. The wall-mounted air conditioner indoor unit according to claim 1, characterized in that, The fresh air outlet duct includes: An air outlet extends along the length of the housing, and the air outlet is provided with a second fresh air outlet that is opposite to and communicates with the first fresh air outlet. The connecting part has one end connected to the volute air outlet of the fresh air housing and the other end connected to one end of the air outlet in the length direction.

3. The wall-mounted air conditioner indoor unit according to claim 2, characterized in that, An airflow channel communicating with the second fresh air outlet is formed inside the air outlet section, and the airflow channel is gradually narrowed from the bottom to the top along the height direction of the casing.

4. The wall-mounted air conditioner indoor unit according to claim 2, characterized in that, The housing also includes: A base, on which the volute tongue is disposed; An outer cover is installed on the base, and the indoor air inlet and the indoor air outlet are located on the outer cover; The first water receiving tray is located on the side of the volute tongue away from the air outlet duct. The first water receiving tray, the volute tongue, and the outer cover form an installation cavity, and the air outlet is installed in the installation cavity.

5. The wall-mounted air conditioner indoor unit according to claim 1, characterized in that, The first fresh air outlet is a long strip-shaped opening extending along the length of the casing.

6. The wall-mounted air conditioner indoor unit according to claim 1, characterized in that, It also includes a wind deflector, which is rotatably connected to the housing and is used to block or open the first fresh air outlet. The rotation axis of the wind deflector extends along the length of the housing.

7. The wall-mounted air conditioner indoor unit according to claim 6, characterized in that, A rotary motor is installed inside the housing, and the rotary motor is connected to the wind deflector to drive the wind deflector to rotate.

8. The wall-mounted air conditioner indoor unit according to claim 7, characterized in that, The housing defines a cavity for mounting the rotary motor. The cavity is located on the side of the cross-flow fan away from the fresh air housing. One end of the baffle plate along its length is rotatably connected to the volute tongue via a shaft, and the other end is provided with a connecting rod extending into the cavity. The connecting rod is connected to the rotary motor.

9. The wall-mounted air conditioner indoor unit according to claim 1, characterized in that, Also includes: A first drive motor is connected to one end of the cross-flow fan near the fresh air housing, and is used to drive the cross-flow fan to rotate; The second drive motor is located inside the fresh air fan cavity and connected to the fresh air fan, and is used to drive the fresh air fan to rotate.

10. The wall-mounted air conditioner indoor unit according to claim 1, characterized in that, It also includes a mixing air guide plate, which is rotatably connected to the housing and extends along the length of the housing. The mixing air guide plate is located on the side of the volute tongue facing the indoor air outlet, and is used to adjust the airflow direction of fresh air and / or mixed air.

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