Wall-mounted air conditioner indoor unit

Abstract

This application relates to the field of air conditioning technology and discloses a wall-mounted air conditioner indoor unit, including a casing and a fresh air module. The fresh air module is disposed within the casing and includes a fresh air volute, a fresh air impeller, an exhaust volute, an exhaust impeller, a drive motor, a heat exchange core housing, a heat exchange core, and a diffuser. The fresh air impeller is disposed within the fresh air volute; the exhaust impeller is disposed within the exhaust volute; the heat exchange core is disposed within the heat exchange chamber, and the area of ​​the air-facing surface of the heat exchange core is larger than the area of ​​the air outlet of the fresh air volute; the diffuser includes a plate body and multiple diffuser holes. The plate body is disposed between the air outlet of the fresh air volute and the heat exchange core; the multiple diffuser holes are all disposed on the plate body. In this application, the diffuser can disperse the fresh air flow between the air outlet of the fresh air volute and the heat exchange core, making the fresh air flow in the air-facing area of ​​the heat exchange core more dispersed and uniform, allowing the fresh air flow to flow to various positions on the air-facing surface of the heat exchange core, thereby improving the heat exchange efficiency of the heat exchange core.

Description

Technical Field

[0001] This application relates to the field of air conditioning technology, and in particular to a wall-mounted air conditioning indoor unit. Background Technology

[0002] The field of home appliance technology encompasses a wide range of product categories, including but not limited to refrigerators, washing machines, air conditioners, microwave ovens, dishwashers, and vacuum cleaners. The technological development trends for these products primarily focus on intelligentization, energy conservation and environmental protection, optimized user experience, and the application of new materials. Optimized user experience is achieved through design innovation and functional enhancement to meet consumers' demands for health, convenience, and personalization.

[0003] As an important branch of home appliances, wall-mounted air conditioner indoor units use a fresh air module to introduce fresh outdoor air into the room through a fresh air impeller and exhaust stale indoor air to the outside through an exhaust impeller, thus completing the replacement of indoor air with fresh air. Moreover, through a heat exchange core, heat can be exchanged between the fresh air entering the room and the indoor air about to be exhausted, so that the temperature of the fresh air entering the room is closer to the indoor temperature. There is no need to start the compressor to heat or cool the fresh air separately, and the fresh air can also avoid significantly affecting the indoor temperature.

[0004] However, in order to reduce the size of the fresh air module and avoid affecting the miniaturization design of the indoor air conditioning unit, the air outlet of the volute and the windward side of the heat exchange core will be mismatched. The area of ​​the air outlet of both the fresh air volute and the exhaust volute is smaller than the windward side of the heat exchange core, causing the airflow to blow only to a part of the heat exchange core. Other areas of the heat exchange core have poor working efficiency or do not work, affecting the heat exchange efficiency of the heat exchange core. Utility Model Content

[0005] This application discloses a wall-mounted air conditioner indoor unit, in which a diffuser is provided between the air outlet of the fresh air volute and the heat exchange core. The diffuser can disperse the airflow at this point, making the airflow in the windward area of ​​the heat exchange core more dispersed and uniform, so that the airflow can flow to various positions on the windward side of the heat exchange core, thereby improving the heat exchange efficiency of the heat exchange core.

[0006] To achieve the above objectives, this application discloses a wall-mounted air conditioner indoor unit, comprising: a casing;

[0007] A fresh air module is disposed within the housing, and the fresh air module includes:

[0008] Fresh air volute;

[0009] A fresh air impeller is disposed inside the fresh air volute, and the fresh air impeller is used to draw in fresh outdoor air;

[0010] An exhaust volute is arranged side-by-side with the fresh air volute along the axial direction of the fresh air volute.

[0011] An exhaust impeller is disposed inside the exhaust volute, and the shaft of the exhaust impeller and the shaft of the fresh air impeller both extend along the axial direction of the fresh air volute. The exhaust impeller is used to exhaust indoor stale air.

[0012] A drive motor is connected to the fresh air impeller and the exhaust impeller respectively, so as to drive the fresh air impeller and the exhaust impeller to rotate;

[0013] A heat exchange core housing is disposed at the air outlet of the fresh air volute. The heat exchange core housing has a heat exchange cavity, which is connected to the air outlet of the fresh air volute and the air outlet of the exhaust volute.

[0014] A heat exchange core is disposed inside the heat exchange cavity to exchange heat between indoor stale air and outdoor fresh air flowing through the heat exchange cavity. The area of ​​the windward side of the heat exchange core is larger than the area of ​​the air outlet of the fresh air volute.

[0015] A diffuser, the diffuser comprising:

[0016] The plate is disposed between the air outlet of the fresh air volute and the heat exchange core, and is spaced apart from both the air outlet of the fresh air volute and the heat exchange core.

[0017] Multiple diffuser holes are provided on the plate body, and the multiple diffuser holes penetrate the plate body from the air outlet of the fresh air volute towards the heat exchange core. The diffuser holes are used to disperse the fresh air flow discharged from the fresh air volute.

[0018] Therefore, in order to reduce the size of the fresh air module and avoid affecting the miniaturization design of the indoor air conditioning unit, the air outlet of the volute and the windward side of the heat exchange core will be mismatched. This will result in the air outlet area of ​​the fresh air volute being smaller than the windward side area of ​​the heat exchange core, and the air outlet area of ​​the fresh air volute being smaller than the windward area of ​​the heat exchange core. As a result, the airflow discharged from the fresh air volute will only blow onto a part of the heat exchange core, while other areas of the heat exchange core will have poor or no working efficiency, affecting the heat exchange efficiency of the heat exchange core. In this embodiment, the fresh air entering the heat exchange core housing from the fresh air volute and exiting from the air outlet of the fresh air volute, which is about to move towards the heat exchange core, can be dispersed by the diffuser plate, turning the high-speed concentrated airflow into a relatively stable laminar flow state. This reduces the airflow velocity differences at various points on the windward side of the heat exchange core, enabling uniform heat exchange across the entire windward side of the heat exchange core. This allows the heat exchange core to be fully utilized, improves the heat exchange efficiency of the fresh air, makes the fresh air closer to room temperature, reduces the impact of the fresh air on the room temperature, avoids excessive changes in room temperature, and improves the user experience.

[0019] As an optional implementation, the heat exchange core housing further comprises:

[0020] The fresh air heat exchange inlet is connected to the air outlet of the fresh air volute.

[0021] Fresh air heat exchange outlet, used to connect indoor space;

[0022] The exhaust heat exchange inlet is connected to the exhaust volute outlet;

[0023] Exhaust and heat exchange outlet, used to connect to outdoor space;

[0024] The heat exchange core contains:

[0025] The fresh air flow channel is connected to the fresh air heat exchange inlet and the fresh air heat exchange outlet respectively;

[0026] The turbid air flow channel is connected to the exhaust heat exchange inlet and the exhaust heat exchange outlet, respectively;

[0027] The fresh air duct and the stale air duct can exchange heat.

[0028] In this way, the heat exchange core is placed in the heat exchange chamber of the heat exchange core shell. The fresh air flow channel and the stale air flow channel are arranged adjacent to each other or staggered inside the heat exchange core to achieve heat transfer. However, the fresh air flow channel and the stale air flow channel are independent of each other, which can ensure that the fresh air and stale air do not mix. The fresh air and stale air exchange heat fully in the heat exchange core, improving the energy efficiency of the air conditioning system, reducing energy consumption, reducing heat loss between indoor and outdoor air, and improving indoor air comfort.

[0029] As an optional implementation, the ratio of the cross-sectional area of ​​the diffuser hole to the area of ​​the windward side of the heat exchange core is 65%-75%.

[0030] Thus, when the porosity of the diffuser is 65%-75%, it can ensure sufficient fresh air volume while allowing fresh air to pass through the diffuser evenly, forming a stable airflow and avoiding excessively large or small local airflow, thereby improving the heat exchange efficiency of the heat exchange core.

[0031] As an optional implementation, the diameter of the diffuser hole is 3mm to 5mm, and the wall thickness of the diffuser plate is 0.8mm to 1.2mm.

[0032] Thus, the diffuser orifice diameter of 3mm to 5mm can precisely control the velocity and flow rate of fresh air, ensuring a stable airflow when the fresh air enters the heat exchange core, which is beneficial to improving the efficiency and uniformity of heat exchange. The pore wall thickness of 0.8mm to 1.2mm provides sufficient mechanical strength for the diffuser plate, ensuring that it is not easily deformed or damaged during long-term use, thus extending the service life of the diffuser plate.

[0033] As an optional implementation, from the center of the air outlet of the fresh air volute to the edge of the plate, the ratio of the cross-sectional area of ​​the diffuser hole to the area of ​​the windward surface of the heat exchange core gradually increases.

[0034] Thus, on the plate, the ratio of the cross-sectional area of ​​the diffuser holes at the position corresponding to the air outlet of the fresh air volute to the area of ​​the windward surface of the heat exchange core is smaller, resulting in greater wind resistance. Conversely, the ratio of the cross-sectional area of ​​the diffuser holes near the edge of the plate to the area of ​​the windward surface of the heat exchange core is larger, resulting in less wind resistance. This facilitates a slightly greater distribution of fresh air to the edge of the plate. On the other hand, at the center corresponding to the air outlet of the fresh air volute, the wind speed is higher due to the location of the outlet. Therefore, if the ratio of the cross-sectional area of ​​the diffuser holes to the area of ​​the windward surface of the heat exchange core is smaller at this location, it can create a wind resistance balance with the edge side of the plate, where the wind speed is lower but the ratio of the cross-sectional area of ​​the diffuser holes to the area of ​​the windward surface of the heat exchange core is larger. This, in turn, allows for a more uniform distribution of fresh air and a more uniform airflow across the entire windward surface of the heat exchange core.

[0035] As an optional implementation, the diameter of the diffuser holes gradually increases from the center of the air outlet of the fresh air volute to the edge of the plate.

[0036] Thus, the gradually increasing aperture design allows the airflow to diffuse more evenly when the fresh air passes through the diffuser, especially in the edge area of ​​the diffuser. The larger aperture allows more air to pass through, thereby balancing the airflow intensity in the center and edge areas, preventing the airflow from being too concentrated in the center area, and improving the overall utilization efficiency of the heat exchange core.

[0037] As an optional implementation, the distribution density of the diffuser holes on the plate gradually decreases from the center of the air outlet of the fresh air volute to the edge of the plate.

[0038] Thus, the reduced distribution density of the diffuser holes in the edge area helps the airflow diffuse better to the outer area of ​​the heat exchange core, improving the overall heat exchange efficiency. Moreover, the design of the gradually changing distribution density of the diffuser holes helps to reduce the rate of change of resistance when the airflow passes through the diffuser plate, avoiding noise and vibration caused by sudden changes in airflow, and improving the smooth operation and quiet performance of the indoor unit of the air conditioner.

[0039] As an optional implementation, the distance between the diffuser plate and the heat exchange core is 3mm to 30mm.

[0040] Thus, a distance of 3mm to 30mm provides a stable transition zone for the fresh airflow, allowing it to fully develop and distribute evenly after passing through the diffuser. This avoids localized excessively fast or slow airflow velocities when entering the heat exchange core, improving the efficiency and uniformity of heat exchange. Furthermore, this appropriate distance reduces the direct impact of the fresh airflow on the surface of the heat exchange core, lowering noise and vibration caused by airflow impact, and also helps extend the lifespan of the heat exchange core.

[0041] As an optional implementation, the heat exchange core housing is formed with:

[0042] The diffuser cavity is connected to the air outlet of the fresh air volute and the fresh air flow channel, and the diffuser plate is disposed in the diffuser cavity.

[0043] In this way, the diffuser cavity provides a relatively independent space for the diffuser plate, allowing the fresh airflow to be fully diffused within the diffuser cavity before entering the heat exchange core, reducing localized airflow impact and unevenness. This enables the uniformly distributed fresh airflow to more effectively contact the heat exchange core, enhancing heat exchange efficiency and improving the overall energy utilization efficiency of the air conditioning system. Furthermore, the diffuser cavity acts as a buffer and stabilizer for the airflow, reducing direct impact on the heat exchange core, thereby lowering operating noise and vibration and improving the user experience.

[0044] As an optional implementation, the housing includes:

[0045] Back panel, used for connecting to the wall;

[0046] The front panel is disposed opposite to the rear panel;

[0047] The heat exchange core housing also has:

[0048] The front wall of the heat exchange core housing is disposed facing the front panel, and the front wall of the heat exchange core housing is provided with:

[0049] A diffuser mounting / removal port is provided, which is connected to the diffuser cavity, allowing the diffuser to be detachably installed in the diffuser cavity via the diffuser mounting / removal port.

[0050] Thus, the detachable design simplifies and facilitates the installation and removal of the diffuser, reducing the difficulty and cost of installation and maintenance. The detachable design proposed in this embodiment allows maintenance personnel or users to easily remove the diffuser from the heat exchanger core housing for cleaning, maintenance, or replacement. Furthermore, the diffuser removal port in this embodiment is located on the front wall of the heat exchanger core housing, allowing the diffuser to be installed and removed along the front side of the housing. Compared to removal and removal on the side or top of the housing, the front side is typically used for air outlet and is usually unobstructed. This eliminates the need to reserve space specifically for diffuser installation and removal when mounting the housing to a wall, making housing installation more convenient and ensuring that no obstructions affect diffuser installation and removal.

[0051] Compared with the prior art, the beneficial effects of this application are:

[0052] The wall-mounted air conditioner indoor unit provided in this application embodiment has a diffuser plate disposed between the air outlet of the fresh air volute and the heat exchange core. The plate is provided with multiple diffuser holes for dispersing the fresh air flow. This disperses the fresh air flow that is discharged from the air outlet of the fresh air volute and moves onto the heat exchange core, turning the high-speed concentrated airflow into a relatively stable laminar flow state. This allows the fresh air flow to move more evenly onto the fresh air front surface of the heat exchange core, so that the heat exchange core can be fully utilized, improving the heat exchange efficiency of the fresh air. This makes the fresh air closer to the room temperature, reduces the impact of the fresh air on the room temperature, avoids excessive changes in room temperature, and improves the user experience. Attached Figure Description

[0053] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0054] Figure 1 This is a schematic diagram of the casing structure disclosed in the embodiments of this application;

[0055] Figure 2 This is a schematic diagram of the structure of the fresh air module disclosed in the embodiments of this application;

[0056] Figure 3 This is a schematic cross-sectional view of the fresh air module disclosed in an embodiment of this application;

[0057] Figure 4 This is a cross-sectional structural schematic diagram of the fresh air module disclosed in an embodiment of this application from another perspective;

[0058] Figure 5 This is a schematic diagram of the fresh air flow direction of the fresh air module disclosed in the embodiments of this application;

[0059] Figure 6 This is a schematic diagram of the turbid airflow direction of the fresh air module disclosed in the embodiments of this application;

[0060] Figure 7 This is an exploded view of the fresh air module disclosed in an embodiment of this application;

[0061] Figure 8 This is an exploded view of the fresh air volute, heat exchange core outer shell, diffuser, and heat exchange core disclosed in the embodiments of this application.

[0062] Figure 9 This is a schematic diagram of the structure of the heat exchange core shell, diffuser plate and heat exchange core disclosed in the embodiments of this application;

[0063] Figure 10 This is a schematic cross-sectional view of the heat exchange core shell, diffuser plate, and heat exchange core disclosed in the embodiments of this application;

[0064] Figure 11 This is a schematic diagram of the structure of the heat exchange core housing disclosed in the embodiments of this application;

[0065] Figure 12 This is a schematic diagram of the structure of the diffuser disclosed in the embodiments of this application.

[0066] Explanation of reference numerals in the attached figures:

[0067] 100-Casing; 11-Rear panel; 12-Front panel; 200-Fresh air module; 21-Fresh air volute; 22-Fresh air impeller; 23-Exhaust air volute; 24-Exhaust air impeller; 25-Drive motor; 26-Heat exchange core housing; 2601-Heat exchange chamber; 2602-Diffuser chamber; 261-Fresh air heat exchange inlet; 262-Fresh air heat exchange outlet; 263-Exhaust air heat exchange inlet; 264-Exhaust air heat exchange outlet; 265-Front wall of heat exchange core housing; 2651-Diffuser plate installation / removal port; 27-Heat exchange core; 271-Fresh airflow channel; 272-Stale airflow channel; 28-Diffuser plate; 281-Plate body; 282-Diffuser holes; 29-Filter core housing; 30-Filter core. Detailed Implementation

[0068] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0069] In this application, the terms "upper," "lower," "top," "bottom," "inner," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0070] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0071] Furthermore, the terms "set up," "equipped with," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0072] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, elements, or components (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, elements, or components. Unless otherwise stated, "a plurality of" means two or more.

[0073] The field of home appliance technology encompasses a wide range of product categories, including but not limited to refrigerators, washing machines, air conditioners, microwave ovens, dishwashers, and vacuum cleaners. The technological development trends for these products primarily focus on intelligentization, energy conservation and environmental protection, optimized user experience, and the application of new materials. Optimized user experience is achieved through design innovation and functional enhancement to meet consumers' demands for health, convenience, and personalization.

[0074] As an important branch of home appliances, wall-mounted air conditioner indoor units use a fresh air module to introduce fresh outdoor air into the room through a fresh air impeller and exhaust stale indoor air to the outside through an exhaust impeller, thus completing the replacement of indoor air with fresh air. Moreover, through a heat exchange core, heat can be exchanged between the fresh air entering the room and the indoor air about to be exhausted, so that the temperature of the fresh air entering the room is closer to the indoor temperature. There is no need to start the compressor to heat or cool the fresh air separately, and the fresh air can also avoid significantly affecting the indoor temperature.

[0075] However, in order to reduce the size of the fresh air module and avoid affecting the miniaturization design of the indoor air conditioning unit, the air outlet of the volute and the windward side of the heat exchange core will be mismatched. This will result in the air outlet area of ​​the fresh air volute being smaller than the windward side area of ​​the heat exchange core, and the air outlet area of ​​the fresh air volute being smaller than the windward area of ​​the heat exchange core. As a result, the airflow discharged from the fresh air volute will only blow onto a part of the heat exchange core, while other areas of the heat exchange core will have poor or no working efficiency, affecting the heat exchange efficiency of the heat exchange core.

[0076] Based on this, this application provides a wall-mounted air conditioner indoor unit that can disperse the airflow discharged from the air outlet of the fresh air volute, so that the airflow in the windward area of ​​the heat exchange core can be more dispersed and uniform, and the airflow can flow to various positions on the windward side of the heat exchange core, thereby improving the heat exchange efficiency of the heat exchange core.

[0077] The technical solution of this application will be further described below with reference to the embodiments and accompanying drawings.

[0078] Please see Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the casing structure disclosed in an embodiment of this application. Figure 2This is a schematic diagram of the structure of the fresh air module disclosed in an embodiment of this application. This application discloses a wall-mounted air conditioner indoor unit, including: a housing 100 and a fresh air module 200. The fresh air module 200 is disposed within the housing 100 and includes a fresh air volute 21, a fresh air impeller 22, an exhaust volute 23, an exhaust impeller 24, a drive motor 25, a heat exchange core housing 26, a heat exchange core 27, and a diffuser 28. A fresh air impeller 22 is disposed within a fresh air volute 21 and is used to draw in fresh outdoor air. An exhaust volute 23 is disposed parallel to the fresh air volute 21 along its axial direction. An exhaust impeller 24 is disposed within an exhaust volute 23, and the shafts of both the exhaust impeller 24 and the fresh air impeller 22 extend along the axial direction of the fresh air volute 21. The exhaust impeller 24 is used to exhaust stale indoor air. A drive motor 25 is connected to both the fresh air impeller 22 and the exhaust impeller 24 to drive them to rotate. The heat exchange core housing 26 is located at the air outlet of the fresh air volute 21. The heat exchange core housing 26 has a heat exchange cavity 2601, which is connected to the air outlet of the fresh air volute 21 and the air outlet of the exhaust volute 23. The heat exchange core 27 is located in the heat exchange cavity 2601 to exchange heat between the indoor stale air and the outdoor fresh air flowing through the heat exchange cavity 2601. The area of ​​the windward side of the heat exchange core 27 is larger than the area of ​​the air outlet of the fresh air volute 21. The diffuser 28 includes a plate body 281 and multiple diffuser holes 282. The plate 281 is disposed between the air outlet of the fresh air volute 21 and the heat exchange core 27, and is spaced apart from both the air outlet of the fresh air volute 21 and the heat exchange core 27; multiple diffuser holes 282 are disposed on the plate 281, and the multiple diffuser holes 282 penetrate the plate 281 from the air outlet of the fresh air volute 21 toward the heat exchange core 27. The diffuser holes 282 are used to disperse the fresh air flow discharged from the fresh air volute 21.

[0079] Specifically, the wall-mounted air conditioner indoor unit includes an outdoor unit and an indoor unit. The outdoor unit is usually installed on the outdoor side and may include components such as a compressor and a heat exchanger. The indoor unit is usually installed on the indoor side and may include components such as a fan and a heat exchanger. The indoor and outdoor units work together to improve the indoor air environment, including cooling, heating, and humidity control.

[0080] In some embodiments, the indoor unit includes a fresh air module 200, which can introduce fresh outdoor air into the room through a fresh air impeller 22 and exhaust stale indoor air to the outside through an exhaust impeller 24, thereby changing the indoor air quality by exchanging fresh air and replacing it with fresh air.

[0081] During the process of the fresh air module 200 exchanging air in the room, the airflow formed by the outdoor fresh air being introduced into the room is called fresh air, and the airflow formed by the indoor air being exhausted is called stale air.

[0082] In some embodiments, the fresh air module 200 further includes a filter housing 29, the air inlet of which is connected to outdoor air, and the air outlet of which is connected to the air inlet of the fresh air volute 21. A filter element 30 is disposed inside the filter housing 29. The filter element 30 may adopt a multi-layer filtration structure or high-efficiency filtration material, such as a HEPA filter or activated carbon filter. The filter element 30 can filter the air inside the filter housing 29 to prevent a large amount of dust or other pollutants from entering the room, affecting the indoor air, or affecting the normal rotation of the fresh air impeller 22 and reducing the service life of the fresh air impeller 22.

[0083] In some embodiments, the fresh air module 200 further includes a heat exchange core 27, which has intersecting fresh air flow channels 271 and stale air flow channels 272. The housing of the fresh air module 200 also includes a heat exchange chamber 2601, in which the heat exchange core 27 is disposed. During the process of fresh air exchange by the fresh air module 200, such as... Figure 5 As shown by the arrow in the image, Figure 5 This is a schematic diagram of the fresh air flow direction of the fresh air module disclosed in this application embodiment. Outdoor fresh air, under the action of the fresh air impeller 22, sequentially passes through the fresh air flow channel 271—outdoor—filter housing 29—filter 30—fresh air volute 21—heat exchange core housing 26—heat exchange core 27—and then into the room, as shown below. Figure 6 As shown by the arrow in the image, Figure 6 This is a schematic diagram of the stale airflow direction of the fresh air module disclosed in this application embodiment. The stale air in the room, under the action of the exhaust impeller 24, sequentially passes through the stale airflow channel 272—indoor—exhaust volute 23—heat exchange core outer shell 26—heat exchange core 27—outdoor. During the process of fresh air intake and stale air exhaust, because the fresh airflow channel 271 and the stale airflow channel 272 intersect each other, specifically, they can be perpendicular to each other, allowing for sufficient heat exchange between the fresh air and stale air in the heat exchange core 27. This ensures that the temperature of the fresh air is close to room temperature, preventing a drastic change in room temperature after the introduction of fresh air. It also eliminates the need to start the compressor to heat or cool the fresh air, saving energy, reducing noise, and improving the user experience.

[0084] Combination Figure 4 and Figure 7 , Figure 4 This is a cross-sectional structural schematic diagram of the fresh air module disclosed in an embodiment of this application from another perspective. Figure 7This is an exploded view of the fresh air module disclosed in an embodiment of this application. In some embodiments, the exhaust impeller 24 and the fresh air impeller 22 are coaxially arranged, so that the fresh air impeller 22 and the exhaust impeller 24 can be driven to rotate by a single drive motor 25. This eliminates the need for separate motors for the fresh air impeller 22 and the exhaust impeller 24, reducing the number of components required for the fresh air module 200. This not only lowers production costs but also significantly reduces the volume occupied by the fresh air module 200, facilitating its miniaturization design. This allows the fresh air module 200 to be more easily integrated into the indoor unit, resulting in a better appearance for the indoor unit and avoiding a significant increase in its size, which would make the indoor unit bulky and affect its compatibility and aesthetics during installation.

[0085] Combination Figure 3 , Figure 3 This is a cross-sectional structural diagram of the fresh air module disclosed in an embodiment of this application. In some embodiments, the fresh air module 200 may further include a diffuser 28. The fresh air entering the heat exchange core housing 26 from the fresh air volute 21 and exiting from the air outlet of the fresh air volute 21, that is, the fresh air flow moving towards the heat exchange core 27, can be dispersed by the diffuser 28, so that the high-speed concentrated airflow becomes a relatively stable laminar flow state, reducing the airflow velocity difference at various points on the windward side of the heat exchange core 27, so that the entire windward side of the heat exchange core 27 can achieve uniform heat exchange, so that the heat exchange core 27 can be fully utilized, improving the heat exchange efficiency of the fresh air, making the fresh air closer to the room temperature, reducing the impact of the fresh air on the room temperature, avoiding excessive changes in the room temperature, and improving the user experience.

[0086] Combination Figure 3 In some embodiments, the plate 281 is spaced apart from the air outlet of the fresh air volute 21 and the heat exchange core 27, ensuring that there is a certain distance between the plate 281 and the air outlet of the fresh air volute 21, and a certain distance between the plate 281 and the heat exchange core 27, so that the diffuser holes 282 on the plate 281 can effectively disperse the airflow.

[0087] In some embodiments, the diffuser 282 can be circular, elliptical, square, etc., to further optimize airflow distribution and heat exchange effect.

[0088] According to this embodiment of the utility model, the diffuser plate 281 is disposed between the air outlet of the fresh air volute 21 and the heat exchange core 27. The plate 281 is provided with a plurality of diffuser holes 282 for dispersing the fresh air flow. The fresh air flow discharged from the air outlet of the fresh air volute 21, that is, moving onto the heat exchange core 27, is dispersed. The high-speed concentrated air flow becomes a relatively stable laminar flow state, so that the fresh air flow can move more evenly to the fresh air windward surface of the heat exchange core 27, so that the heat exchange core 27 can be fully utilized, improving the heat exchange efficiency of the fresh air, making the fresh air closer to the room temperature, reducing the impact of the fresh air on the room temperature, avoiding excessive changes in the room temperature, and improving the user experience.

[0089] Combination Figure 9 and Figure 10 , Figure 9 This is a schematic diagram of the structure of the heat exchange core shell, diffuser plate, and heat exchange core disclosed in the embodiments of this application. Figure 10 This is a cross-sectional structural diagram of the heat exchange core housing, diffuser plate, and heat exchange core disclosed in an embodiment of this application. In some embodiments, the heat exchange core housing 26 further includes a fresh air heat exchange inlet 261, a fresh air heat exchange outlet 262, an exhaust heat exchange inlet 263, and an exhaust heat exchange outlet 264. The fresh air heat exchange inlet 261 is connected to the outlet of the fresh air volute 21; the fresh air heat exchange outlet 262 is used to connect to the indoor space; the exhaust heat exchange inlet 263 is connected to the outlet of the exhaust volute 23; the exhaust heat exchange outlet 264 is used to connect to the outdoor space; a fresh air flow channel 271 and a stale air flow channel 272 are formed inside the heat exchange core 27. The fresh air flow channel 271 is connected to the fresh air heat exchange inlet 261 and the fresh air heat exchange outlet 262 respectively; the turbid air flow channel 272 is connected to the exhaust air heat exchange inlet 263 and the exhaust air heat exchange outlet 264 respectively; the fresh air flow channel 271 and the turbid air flow channel 272 can exchange heat.

[0090] Specifically, the heat exchange core 27 contains a fresh air flow channel 271 and a stale air flow channel 272. The two ends of the fresh air flow channel 271 are connected to a fresh air heat exchange inlet 261 and a fresh air heat exchange outlet 262, respectively. The two ends of the stale air flow channel 272 are connected to an exhaust air heat exchange inlet 263 and an exhaust air heat exchange outlet 264, respectively. Heat exchange can occur between the two channels. The heat exchange core 27 is placed within the heat exchange chamber 2601 of the heat exchange core outer shell 26. The fresh air flow channel 271 and the stale air flow channel 272 are arranged adjacently or alternately within the heat exchange core 27 to achieve heat transfer. However, the fresh air flow channel 271 and the stale air flow channel 272 are independent of each other, ensuring that fresh air and stale air do not mix. The fresh air and stale air exchange heat fully within the heat exchange core 27, improving the energy efficiency of the air conditioning system, reducing energy consumption, minimizing heat loss between indoor and outdoor air, and enhancing indoor air comfort.

[0091] Combination Figure 8 , Figure 9and Figure 10 , Figure 8 This is an exploded view of the fresh air volute, heat exchange core housing, diffuser plate, and heat exchange core disclosed in an embodiment of this application. In some embodiments, an array of diffuser holes 282 is disposed throughout the plate 281, and the area of ​​the plate 281 is adapted to and the position corresponds to the windward surface of the heat exchange core 27.

[0092] Specifically, the diffuser plate 28's body 281 is positioned between the air outlet of the fresh air volute 21 and the heat exchange core 27, at a certain distance from both. An array of diffuser holes 282 is distributed across the entire body 281. After fresh air flows out from the air outlet of the fresh air volute 21, it enters the windward surface of the heat exchange core 27 evenly through the diffuser holes 282. The array of diffuser holes 282 across the entire body 281 ensures that fresh air is evenly distributed across the entire windward surface of the heat exchange core 27, preventing excessive concentration or dispersion of local airflow and improving the efficiency and uniformity of heat exchange. The body 281 and the windward surface area of ​​the heat exchange core 27 are matched and their positions correspond, ensuring that fresh air can fully cover the surface of the heat exchange core 27, enhancing the heat transfer effect between the fresh air and the heat exchange core 27, thereby improving the efficiency of the entire heat exchange system. This design allows for a tighter fit between the diffuser plate 28 and the heat exchange core 27, reducing unnecessary space occupation, optimizing the internal structural layout of the wall-mounted air conditioner indoor unit, and improving the product's compactness and aesthetics. Furthermore, the surface of the diffuser plate 28 can be specially treated, such as by adding a coating with dustproof, waterproof, and antibacterial functions, to improve its self-cleaning ability and hygiene performance, reduce maintenance costs, and extend its service life.

[0093] Combination Figure 12 , Figure 12 This is a schematic diagram of the diffuser plate disclosed in an embodiment of this application. In some embodiments, the ratio of the cross-sectional area of ​​the diffuser hole 282 to the area of ​​the windward side of the heat exchange core 27 is 65%-75%.

[0094] Specifically, the ratio of the cross-sectional area of ​​the diffuser 282 to the area of ​​the windward surface of the heat exchange core 27 ensures that the diffuser 28 achieves optimal airflow distribution between the air outlet of the fresh air volute 21 and the heat exchange core 27. This ensures that the fresh airflow is dispersed, transforming it from a high-speed, concentrated airflow into a relatively stable laminar flow. Simultaneously, it prevents a large amount of fresh air from stagnating between the air outlet of the fresh air volute 21 and the diffuser 28, thus affecting the fresh air volume. In other words, when the ratio of the cross-sectional area of ​​the diffuser 282 to the area of ​​the windward surface of the heat exchange core 27 is 65%-75%, it ensures sufficient fresh air volume while allowing the fresh air to pass evenly through the diffuser 28, forming a stable airflow and preventing excessively large or small local airflows, thereby improving the heat exchange efficiency of the heat exchange core 27. In addition, the diffuser 28 may also include multiple plates 281, each plate 281 having multiple diffuser holes 282. The diffuser holes 282 between the plates 281 can be staggered. By reasonably combining these plates 281, the airflow distribution in different areas can be controlled more precisely to meet the ventilation and heat exchange requirements in complex environments.

[0095] Combination Figure 12 In some embodiments, the diameter of the diffuser hole 282 is 3mm to 5mm, and the wall thickness of the diffuser plate 28 is 0.8mm to 1.2mm.

[0096] Specifically, the limited diameter of the diffuser orifice 282 and the limited wall thickness of the diffuser plate 28 ensure that the diffuser plate 28, while achieving the effect of dispersing airflow, possesses sufficient structural strength and stability. The 3mm–5mm diameter of the diffuser orifice 282 allows for precise control of the fresh air velocity and flow rate, ensuring a stable airflow when the fresh air enters the heat exchange core 27, which is beneficial for improving the efficiency and uniformity of heat exchange. The 0.8mm–1.2mm wall thickness of the pore provides sufficient mechanical strength for the diffuser plate 28, ensuring that it is not easily deformed or damaged during long-term use, thus extending its service life. Furthermore, the appropriate diameter and wall thickness of the diffuser orifice 282 help reduce noise and vibration during airflow, improving the quiet operation of the indoor unit and enhancing the user experience.

[0097] In some embodiments, from the center of the air outlet of the fresh air volute 21 to the edge of the plate 281, the ratio of the cross-sectional area of ​​the diffuser hole 282 to the area of ​​the windward surface of the heat exchange core 27 gradually increases.

[0098] Specifically, when the ratio of the cross-sectional area of ​​the diffuser orifice 282 to the area of ​​the windward surface of the heat exchange core 27 is small, it means that there are relatively few openings on the diffuser plate 28 through which airflow can pass, resulting in greater resistance to airflow. This greater resistance causes stronger collisions and splitting of the airflow as it passes through the diffuser orifice 282, thereby enhancing the dispersing effect on the airflow. Moreover, because the ratio of the cross-sectional area of ​​the diffuser orifice 282 to the area of ​​the windward surface of the heat exchange core 27 is small, the airflow needs to pass through a narrower channel, which leads to an increase in airflow velocity. The increase in velocity increases the kinetic energy of the airflow, making it easier to form turbulence. In turbulent conditions, the trajectory of the airflow is more irregular, and the mixing and collision between airflows are more intense, further increasing the intensity of airflow dispersion. Therefore, on plate 281, the ratio of the cross-sectional area of ​​the diffuser hole 282 at the position corresponding to the air outlet of the fresh air volute 21 to the area of ​​the windward surface of the heat exchange core 27 is smaller, resulting in greater wind resistance. Conversely, the ratio of the cross-sectional area of ​​the diffuser hole 282 near the edge of plate 281 to the area of ​​the windward surface of the heat exchange core 27 is larger, resulting in less wind resistance. This facilitates a slightly larger distribution of fresh air to the edge of plate 281. On the other hand, at the center corresponding to the air outlet of the fresh air volute 21, the wind speed is higher due to the location of the air outlet. Therefore, if the ratio of the cross-sectional area of ​​the diffuser hole 282 to the area of ​​the windward surface of the heat exchange core 27 is smaller at this location, it can balance the wind resistance with the edge side of plate 281, where the wind speed is lower but the ratio of the cross-sectional area of ​​the diffuser hole 282 to the area of ​​the windward surface of the heat exchange core 27 is larger. This allows for a more uniform distribution of fresh air and a more uniform airflow across the entire windward surface of the heat exchange core 27. In addition, the surface of the diffuser 28 can be textured, such as by adding fine grooves, protrusions, or a mesh pattern, to alter the boundary layer characteristics of the airflow and reduce airflow separation and vortex formation. This not only helps reduce drag but also improves the stability and uniformity of airflow distribution, further enhancing the heat exchange performance of the heat exchange core 27.

[0099] In some embodiments, the diameter of the diffuser hole 282 gradually increases from the center of the air outlet of the fresh air volute 21 to the edge of the plate 281.

[0100] Specifically, the diffuser 28 is positioned between the air outlet of the fresh air volute 21 and the heat exchange core 27. Fresh air enters through the air inlet of the fresh air duct 271, and after passing through the diffuser holes 282, the airflow distribution is influenced by the gradual change in hole diameter, gradually diffusing and evenly entering the heat exchange core 27. The gradually increasing hole diameter design allows the fresh airflow to diffuse more evenly as it passes through the diffuser 28, especially in the edge area of ​​the diffuser 28, where the larger hole diameter allows more air to pass through, thus balancing the airflow intensity between the center and edge areas. This prevents the fresh airflow from concentrating too much in the central area and improves the overall utilization efficiency of the heat exchange core 27.

[0101] In some embodiments, the distribution density of the diffuser holes 282 on the plate 281 gradually decreases from the center of the air outlet of the fresh air volute 21 to the edge of the plate 281.

[0102] Specifically, the distribution density of the diffuser holes 282 on the plate 281 refers to the number of diffuser holes 282 contained in a unit area of ​​the plate 281. A uniform airflow distribution ensures that fresh air can fully contact the heat exchange core 27, enhancing heat transfer. In particular, the reduced distribution density of the diffuser holes 282 in the edge areas helps the airflow diffuse better to the outer periphery of the heat exchange core 27, improving overall heat exchange efficiency. Furthermore, the design of a gradually changing distribution density of the diffuser holes 282 helps reduce the rate of change in resistance when the airflow passes through the diffuser plate 28, avoiding noise and vibration caused by sudden changes in airflow, and improving the smooth operation and quietness of the indoor unit of the air conditioner.

[0103] Combination Figure 3 In some embodiments, the distance between the diffuser 28 and the heat exchange core 27 is 3mm to 30mm.

[0104] Specifically, limiting the distance between the diffuser 28 and the heat exchange core 27 optimizes the flow characteristics of the fresh airflow between them, ensuring that the airflow enters the heat exchange core 27 evenly, thereby improving heat exchange efficiency. A distance of 3mm to 30mm provides a stable transition zone for the fresh airflow, allowing it to fully develop and distribute evenly after passing through the diffuser 28. This avoids localized excessively fast or slow airflow velocities when entering the heat exchange core 27, improving both efficiency and uniformity of heat exchange. Furthermore, an appropriate distance reduces the direct impact of the fresh airflow on the surface of the heat exchange core 27, lowering noise and vibration caused by airflow impact, and also helps extend the service life of the heat exchange core 27. Additionally, a sound-absorbing device or sound-absorbing material can be added between the diffuser 28 and the heat exchange core 27 to further reduce noise generated during airflow. A multi-layered noise reduction structure can be designed, combining the ratio of the cross-sectional area of ​​the diffuser hole 282 to the area of ​​the windward surface of the heat exchange core 27 and the aperture distribution of the diffuser hole 282, to form a comprehensive system that can both uniformly distribute airflow and effectively absorb noise.

[0105] Combination Figure 10 In some embodiments, the heat exchange core housing 26 forms a diffuser cavity 2602, which is connected to the air outlet of the fresh air volute 21 and the fresh air flow channel 271, respectively, and the diffuser plate 28 is disposed in the diffuser cavity 2602.

[0106] Specifically, the diffuser cavity 2602 is connected to both the air outlet of the fresh air volute 21 and the fresh air flow channel 271, and the diffuser plate 28 is disposed within the diffuser cavity 2602. After entering the diffuser cavity 2602 from the air outlet of the fresh air volute 21, the fresh airflow is dispersed by the diffuser plate 28, flows into the fresh air flow channel 271, and finally enters the heat exchange core 27. The diffuser cavity 2602 controls the flow path of the fresh airflow, ensuring that the airflow is sufficiently diffused and evenly distributed before entering the heat exchange core 27. In other words, the diffuser cavity 2602 provides a relatively independent space for the diffuser plate 28, allowing the fresh airflow to be fully diffused within the diffuser cavity 2602 before entering the heat exchange core 27, reducing localized impacts and unevenness in the airflow. This allows the evenly distributed fresh airflow to more effectively contact the heat exchange core 27, enhancing the heat exchange effect and improving the energy efficiency of the entire air conditioning system. Furthermore, the diffuser cavity 2602 can buffer and stabilize the airflow, reducing the direct impact of the airflow on the heat exchange core 27, thereby reducing operating noise and vibration and improving the user experience. In addition, diffuser cavities 2602 can be designed with different shapes, such as conical, rectangular, or streamlined, to adapt to different airflow characteristics and heat exchange requirements. For example, a conical diffuser cavity 2602 can gradually increase the cross-sectional area of ​​the airflow, making the airflow more uniform when entering the heat exchange core 27; a streamlined diffuser cavity 2602 can reduce airflow resistance and turbulence, improving airflow efficiency.

[0107] Combination Figure 1 , Figure 9 , Figure 10 and Figure 11 , Figure 11 This is a schematic diagram of the structure of the heat exchange core housing disclosed in an embodiment of this application. In some embodiments, the housing 100 includes a rear plate 11 and a front plate 12. The rear plate 11 is used to connect to a wall. The front plate 12 is disposed opposite to the rear plate 11. The heat exchange core housing 26 also has a heat exchange core housing front wall 265, which is disposed towards the front plate 12. The heat exchange core housing front wall 265 is provided with a diffuser plate removal port 2651, which communicates with a diffuser cavity 2602. The diffuser plate 28 can be detachably installed in the diffuser cavity 2602 through the diffuser plate removal port 2651.

[0108] Specifically, a diffuser installation / removal port 2651 is provided on the front wall 265 of the heat exchange core housing. The diffuser installation / removal port 2651 communicates with the diffuser cavity 2602, providing a channel for the installation and removal of the diffuser 28. The detachable design makes the installation and removal of the diffuser 28 simple and convenient, reducing the difficulty and cost of installation and maintenance. The detachable design proposed in this embodiment allows maintenance personnel or users to easily remove the diffuser 28 from the heat exchange core housing 26 for cleaning, maintenance, or replacement. Furthermore, in this embodiment, the diffuser installation / removal port 2651 is located on the front wall 265 of the heat exchange core housing, allowing the diffuser 28 to be installed / removed along the front side of the housing 100. Compared to installation / removal on the side or top of the housing 100, the front side of the housing 100 is typically used for air outlet and is usually unobstructed. This eliminates the need to reserve space specifically for the installation / removal of the diffuser 28 when the housing 100 is mounted on a wall, making the installation of the housing 100 more convenient and preventing any obstructions from affecting the installation / removal of the diffuser 28. Additionally, a sealing structure, such as a sealing ring or sealing strip, can be designed at the diffuser installation / removal port 2651 to ensure the sealing of the port after the diffuser 28 is installed, preventing air leakage, improving heat exchange efficiency, and preventing dust and contaminants from entering the diffuser cavity 2602 from the port.

[0109] Combination Figure 1 , Figure 9 , Figure 10 and Figure 11 In some embodiments, the diffuser cavity 2602 has a bottom surface. Along the disassembly and assembly direction of the diffuser plate 28, the bottom surface of the diffuser cavity 2602 is opposite to the diffuser plate disassembly and assembly port 2651, and along the height direction of the housing 100, the diffuser plate disassembly and assembly port 2651 is higher than the bottom surface of the diffuser cavity 2602.

[0110] Specifically, when the diffuser 28 is installed into the diffuser cavity 2602 through the diffuser installation port 2651, it can be pushed manually or by gravity to allow the bottom of the diffuser 28 to fall into the bottom surface of the diffuser cavity 2602, thus installing the diffuser 28 in place. Moreover, the inclined diffuser 28 can be parallel to the inclined heat exchange core 27, ensuring that the fresh air flow can smoothly enter the fresh air flow channel 271 of the heat exchange core 27.

[0111] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A wall-mounted air conditioner indoor unit, characterized in that, include: Housing (100); A fresh air module (200) is disposed within the housing (100), and the fresh air module (200) includes: Fresh air volute (21); A fresh air impeller (22) is disposed inside the fresh air volute (21), and the fresh air impeller (22) is used to draw in fresh outdoor air; The exhaust volute (23) is arranged side by side with the fresh air volute (21) along the axial direction of the fresh air volute (21); An exhaust impeller (24) is disposed inside the exhaust volute (23), and the shaft of the exhaust impeller (24) and the shaft of the fresh air impeller (22) both extend along the axial direction of the fresh air volute (21). The exhaust impeller (24) is used to exhaust indoor turbid air. A drive motor (25) is connected to the fresh air impeller (22) and the exhaust impeller (24) respectively, so as to drive the fresh air impeller (22) and the exhaust impeller (24) to rotate; The heat exchange core housing (26) is disposed at the air outlet of the fresh air volute (21). The heat exchange core housing (26) has a heat exchange chamber (2601), which is connected to the air outlet of the fresh air volute (21) and the air outlet of the exhaust volute (23). A heat exchange core (27) is disposed in the heat exchange chamber (2601) to exchange heat between indoor stale air and outdoor fresh air flowing through the heat exchange chamber (2601). The area of ​​the windward side of the heat exchange core (27) is larger than the area of ​​the air outlet of the fresh air volute (21). A diffuser (28), the diffuser (28) comprising: The plate (281) is disposed between the air outlet of the fresh air volute (21) and the heat exchange core (27), and is spaced apart from both the air outlet of the fresh air volute (21) and the heat exchange core (27). Multiple diffuser holes (282) are provided on the plate (281), and the multiple diffuser holes (282) penetrate the plate (281) from the air outlet of the fresh air volute (21) towards the heat exchange core (27). The diffuser holes (282) are used to disperse the fresh air flow discharged from the fresh air volute (21).

2. The wall-mounted air conditioner indoor unit according to claim 1, characterized in that, The heat exchange core housing (26) also has: The fresh air heat exchange inlet (261) is connected to the air outlet of the fresh air volute (21); Fresh air heat exchange outlet (262) is used to connect indoor space; The exhaust heat exchange inlet (263) is connected to the outlet of the exhaust volute (23); Exhaust and heat exchange outlet (264) is used to connect to the outdoor space; The heat exchange core (27) contains: The fresh air duct (271) is connected to the fresh air heat exchange inlet (261) and the fresh air heat exchange outlet (262) respectively; The turbid air flow channel (272) is connected to the exhaust heat exchange inlet (263) and the exhaust heat exchange outlet (264) respectively; The fresh air flow channel (271) and the turbid air flow channel (272) can exchange heat.

3. The wall-mounted air conditioner indoor unit according to claim 1, characterized in that, The ratio of the cross-sectional area of ​​the diffuser hole (282) to the area of ​​the windward side of the heat exchange core (27) is 65%-75%.

4. The wall-mounted air conditioner indoor unit according to claim 3, characterized in that, The diameter of the diffuser hole (282) is 3mm to 5mm, and the wall thickness of the diffuser plate (28) is 0.8mm to 1.2mm.

5. The wall-mounted air conditioner indoor unit according to claim 4, characterized in that, From the center of the air outlet of the fresh air volute (21) to the edge of the plate (281), the ratio of the cross-sectional area of ​​the diffuser hole (282) to the area of ​​the windward surface of the heat exchange core (27) gradually increases.

6. The wall-mounted air conditioner indoor unit according to claim 4, characterized in that, From the center of the air outlet of the fresh air volute (21) to the edge of the plate (281), the diameter of the diffuser hole (282) gradually increases.

7. The wall-mounted air conditioner indoor unit according to claim 5 or 6, characterized in that, From the center of the air outlet of the fresh air volute (21) to the edge of the plate (281), the distribution density of the diffuser holes (282) on the plate (281) gradually decreases.

8. The wall-mounted air conditioner indoor unit according to claim 1, characterized in that, The distance between the diffuser plate (28) and the heat exchange core (27) is 3mm to 30mm.

9. The wall-mounted air conditioner indoor unit according to claim 2, characterized in that, The heat exchange core outer shell (26) is formed with: A diffuser cavity (2602) is connected to the air outlet of the fresh air volute (21) and the fresh air duct (271), respectively, and a diffuser plate (28) is disposed in the diffuser cavity (2602).

10. The wall-mounted air conditioner indoor unit according to claim 9, characterized in that, The housing (100) includes: Back panel (11), used for connecting to the wall; The front panel (12) is disposed opposite to the rear panel (11); The heat exchange core housing (26) also has: The heat exchange core housing front wall (265) is disposed facing the front panel (12), and the heat exchange core housing front wall (265) is provided with: A diffuser mounting / dismounting port (2651) is provided, which is connected to the diffuser cavity (2602). The diffuser (28) can be detachably installed in the diffuser cavity (2602) through the diffuser mounting / dismounting port (2651).

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