Wall-mounted air conditioner

Abstract

The invention provides a wall-mounted air conditioner, and belongs to the technical field of air conditioners. According to the wall-mounted air conditioner, a drainage channel is defined between a drainage baffle and the front side of a machine shell, part of airflow obtained after preliminary heat exchange of a heat exchanger is guided back to the air inlet side of the wall-mounted air conditioner again, the part of airflow participates in heat exchange again on the premise that energy consumption is not increased, and therefore the heat exchange path is prolonged under the condition that the area of the heat exchanger is not enlarged, and heat exchange efficiency is improved. The heat exchange efficiency is improved; meanwhile, backflow airflow continuously scours the surface of the heat exchanger, thermal resistance of a boundary layer is weakened, temperature distribution of the heat exchanger is more uniform, local low-temperature or high-temperature areas are reduced, the frosting risk is reduced, and performance attenuation is delayed; the drainage channel is located in the installation cavity, the internal space of the machine shell does not need to be additionally occupied, and the compact size of the wall-mounted air conditioner is kept.

Description

Technical Field

[0001] This application relates to the field of air conditioner technology, and more specifically, to a wall-mounted air conditioner. Background Technology

[0002] Currently, conventional air conditioners heat up relatively slowly, typically requiring auxiliary electric heating to further increase the temperature. This results in a longer time for the air conditioner to deliver hot air, leading to a less comfortable user experience. Furthermore, the high power consumption of auxiliary electric heating poses safety risks. Therefore, there is an urgent need for an air conditioner design that is structurally sound, offers flexible control, and provides comfortable airflow to improve the user experience. Summary of the Invention

[0003] This application provides a wall-mounted air conditioner that defines a flow channel between a baffle plate and the front side of the casing. This channel redirects a portion of the airflow, after initial heat exchange in the heat exchanger, back to the air inlet side. This allows the airflow to participate in heat exchange again without increasing energy consumption, thus extending the heat exchange path and improving heat exchange efficiency without increasing the heat exchanger area. Simultaneously, the returning airflow continuously scours the heat exchanger surface, weakening boundary layer thermal resistance, resulting in a more uniform temperature distribution, reducing localized low or high temperature areas, thereby lowering the risk of frosting and delaying performance degradation. The flow channel is located within the mounting cavity, eliminating the need for additional internal space in the casing and maintaining the compact size of the wall-mounted air conditioner. Specifically: The first aspect of this application provides a wall-mounted air conditioner, the air conditioner comprising: The casing has an air inlet and an air outlet; The heat exchanger and fan system are arranged between the air inlet and the air outlet, and an installation cavity is formed between the front side of the heat exchanger and the front side of the casing. A drainage baffle, at least a portion of which is disposed in the mounting cavity and defines a drainage channel between the baffle and the front side of the housing; The air inlet of the diversion channel can be connected to the air outlet of the ventilation system, and the air outlet can be connected to the air inlet of the heat exchanger, so that the airflow after the initial heat exchange in the heat exchanger can be guided by the diversion channel to flow back to the air inlet of the heat exchanger for secondary heat exchange.

[0004] In the above technical solution, the bottom of the heat exchanger is open and mounted above the fan system. The heat exchanger includes a first heat exchange section that is inclined and close to the rear side of the casing, and a second heat exchange section that is inclined and close to the front side of the casing. The first heat exchange section and the rear side of the casing define a first heat exchange space, and the second heat exchange section and the flow guide baffle define a second heat exchange space. The second heat exchange space is closer to the inlet of the fan system than the first heat exchange space, and the airflow velocity in the second heat exchange space is higher than the airflow velocity in the first heat exchange space. At least a portion of the airflow, after exiting the guide channel, can flow from the high-velocity second heat exchange space to the low-velocity first heat exchange space, so that at least a portion of the airflow guided by the guide channel can exchange heat again with the first heat exchange section of the heat exchanger.

[0005] In the above technical solution, a number of air flow holes are provided on the flow diversion baffle, one end of the air flow hole is connected to the flow diversion channel and the other end is connected to the second heat exchange space; At least a portion of the airflow entering the drainage channel can enter the second heat exchange space through several airflow holes and flow towards the first heat exchange space.

[0006] In the above technical solution, the portion of the baffle located in the installation cavity extends from top to bottom, and several airflow holes are divided into multiple groups of airflow holes from top to bottom. In the two adjacent airflow hole groups, the diameter of the airflow hole in the upper airflow hole group is a, and the diameter of the airflow hole in the lower airflow hole group is b, where a > b.

[0007] In the above technical solution, the second heat exchange part includes a second heat exchange part A set according to a first slope and a second heat exchange part B set according to a second slope. The bottom of the second heat exchange part A is connected to the top of the second heat exchange part B, and the first slope is less than the second slope. Several airflow holes are divided into three groups of airflow holes from top to bottom. The large-diameter airflow hole group at the top corresponds horizontally to the second heat exchange section A. The medium-diameter airflow hole group in the middle corresponds horizontally to the connection position between the second heat exchange section A and the second heat exchange section B. The small-diameter airflow hole group at the bottom corresponds horizontally to the second heat exchange section B.

[0008] In the above technical solution, the air conditioner also includes: An air guide plate is movably installed at the air outlet to open or close the air outlet. When in motion, the air guide plate can create at least a first air supply path, a second air supply path, and a third air supply path inside the air conditioner. in In the first air supply path, all the airflow delivered by the fan system is discharged through the air outlet; In the second air supply path, part of the airflow delivered by the fan system is discharged through the air outlet, and the other part is guided to the air inlet side of the heat exchanger through the diversion channel for secondary heat exchange. In the third air supply path, all the airflow delivered by the fan system is guided through the diversion channel to the air inlet side of the heat exchanger for secondary heat exchange.

[0009] In the above technical solution, the air outlet includes a lower air outlet located on the front side of the bottom of the housing, and a front air outlet located on the bottom side of the front of the housing. The air guide plate includes a lower air guide plate installed at the lower air outlet and a front air guide plate installed at the front air outlet; The first air supply path includes a first air supply path system A and a first air supply path B; in Under the first air supply path A, all the airflow delivered by the fan system is discharged through the lower air outlet; In the first air supply path B, all the airflow delivered by the fan system is discharged through the front air outlet.

[0010] In the above technical solution, the outlet side of the fan system has an upper diffuser section and a lower diffuser section. The upper diffuser section is located near the front side of the casing, and the lower diffuser section is located near the rear side of the casing. The bottom end of the flow-draining baffle is connected to the upper diffuser section near the front side of the housing, and the top end extends towards the top of the housing. in In the first air supply path A, the lower air guide plate rotates to position one. At this time, one end of the lower air guide plate is located near the rear side of the upper diffuser section and the other end is located at the front edge of the lower air outlet. A lower air outlet channel is formed between the lower air guide plate and the lower diffuser section, so that the airflow delivered by the fan system can be completely sent out through the lower air outlet while blocking the flow channel connecting the fan system outlet. and / or In the first air supply path B, the lower air guide plate closes the lower air outlet, and the front air guide plate opens the front air outlet. When the front air guide plate opens the front air outlet, it has a first open state and a second open state. When the front air guide plate is in the first open state, the rotating end of the front air guide plate is at the upper edge of the front air outlet, and the free end is at the position of the upper diffuser section near the front side of the casing. This allows the airflow delivered by the fan system to be sent out through the front air outlet while blocking the connection between the fan system outlet and the diversion channel. When the front air guide plate is in the second open state, the rotating end of the front air guide plate is at the upper edge of the front air outlet, and the free end extends to the outside of the casing. At this time, a duct baffle is provided between the upper edge of the front air outlet and the front side of the upper diffuser section. The duct baffle seals the bottom air inlet side of the diversion channel, so that the airflow delivered by the fan system can also be sent out through the front air outlet while blocking the connection between the fan system outlet and the diversion channel. and / or In the second air supply path, the lower air guide plate is controlled to rotate to the second position of the lower air guide plate. The front air guide plate closes the front air outlet. When the lower air guide plate is in the second position of the lower air guide plate, the lower air guide plate is tilted at the lower air outlet. An inner air duct section with a connecting flow channel is formed between the tilted lower air guide plate and the upper diffuser section. An outer air duct section with a connecting flow channel is formed between the tilted lower air guide plate and the lower diffuser section. This allows part of the airflow delivered by the fan system to be guided to the flow channel through the inner air duct section and the other part to be delivered to the lower air outlet through the outer air duct section. and / or In the third air supply path, the lower air guide plate closes the lower air outlet, and the front air guide plate closes the front air outlet, so that all the airflow sent by the fan system can be guided through the flow channel to the air inlet side of the heat exchanger for secondary heat exchange.

[0011] In the above technical solution, the wall-mounted air conditioner also includes: The air duct baffle is rotatably positioned at the bottom of the air intake side of the air intake channel. When rotating, the air duct baffle has two positions: Air Duct Baffle Position 1 and Air Duct Baffle Position 2. When the air duct baffle is in Air Duct Baffle Position 1, it extends laterally, with one end at the upper edge of the front air outlet and the other end at the upper diffuser section near the front of the casing, thus blocking the connection between the fan system outlet and the air intake channel. When the air duct baffle is in Air Duct Baffle Position 2, it extends longitudinally and is positioned in the middle of the air intake channel, thus dividing the bottom area of ​​the air intake channel into two sub-air intake channel sections, both of which are connected to the fan system outlet. in In the first air supply path, the duct damper rotates to one position. In the second and third air supply paths, the duct damper rotates to position two.

[0012] In the above technical solution, the outlet side of the fan system has an upper diffuser section and a lower diffuser section. The upper diffuser section is located near the front side of the casing, and the lower diffuser section is located near the rear side of the casing. The flow guide baffle is an arc-shaped plate with its bottom end rotatably connected to the upper diffuser section near the front side of the casing; in In the first air supply path, the diversion baffle is controlled to rotate around its bottom rotating end toward the side away from the heat exchanger, so as to increase the heat exchange space volume between the heat exchanger and the diversion baffle. and / or In the second air supply path, the diversion baffle is controlled to rotate around its bottom rotating end toward the side closer to the heat exchanger to increase the volume of the diversion channel between the diversion baffle and the casing. and / or In the third air supply path, the diversion baffle is controlled to rotate around its bottom rotating end toward the side closer to the heat exchanger to increase the volume of the diversion channel between the diversion baffle and the casing.

[0013] In the above technical solution, the wall-mounted air conditioner has a cooling air supply mode and a heating air supply mode. When the air conditioner is running in cooling mode, the wall-mounted air conditioner is controlled to deliver air through the first air supply path B. When the air conditioner is running in heating mode, the wall-mounted air conditioner can adjust the air supply path according to the stage of operation of the heating mode. The heating mode of the wall-mounted air conditioner is divided into the heating start stage, the initial heating air supply stage and the normal heating air supply stage according to the order of operation. in When the wall-mounted air conditioner is in heating mode, it is controlled to supply air through the third air supply path. When the wall-mounted air conditioner is in the initial stage of heating and air supply, the wall-mounted air conditioner is controlled to supply air through the second air supply path. When the wall-mounted air conditioner is in the normal heating and air supply stage, it is controlled to supply air through the first air supply path A.

[0014] In the above technical solution, when the wall-mounted air conditioner is in the heating start-up stage, the fan system is controlled to run at a speed of V1. When the wall-mounted air conditioner is in the initial stage of heating and air output, the fan system is controlled to run at a speed of V2. When the wall-mounted air conditioner is in the normal heating and air output stage, the fan system is controlled to run at V3 speed; Where V1 < V2 < V3.

[0015] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: In this embodiment, a flow channel is defined between the flow-guiding baffle and the front side of the casing, guiding part of the airflow after initial heat exchange in the heat exchanger back to its air inlet side. This allows the airflow to participate in heat exchange again without increasing energy consumption, thereby extending the heat exchange path and improving heat exchange efficiency without increasing the heat exchanger area. At the same time, the return airflow continuously scours the surface of the heat exchanger, weakening the boundary layer thermal resistance, making the temperature distribution of the heat exchanger more uniform, reducing local low or high temperature areas, thereby reducing the risk of frosting and delaying performance degradation. The flow channel is located inside the installation cavity, without occupying additional internal space of the casing, maintaining the compact size of the wall-mounted air conditioner. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the internal structure of the wall-mounted air conditioner in the embodiments of this application; Figure 2This is a schematic diagram of the internal structure of the wall-mounted air conditioner in cooling mode in an embodiment of this application; Figure 3 This is a schematic diagram of the internal structure of the wall-mounted air conditioner in the heating start-up phase of an embodiment of this application. Figure 4 This is a schematic diagram of the internal structure of the wall-mounted air conditioner in the initial air outlet stage of heating in an embodiment of this application. Figure 5 This is a schematic diagram of the internal structure of the wall-mounted air conditioner in the normal heating and air output stage in an embodiment of this application. Figure 6 This is a schematic diagram showing the corresponding positions of the heat exchanger and the flow guide baffle in an embodiment of this application.

[0017] in: 10-House casing; 101-Air inlet; 102-Air outlet; 1021-Lower air outlet; 1022-Front air outlet; 20 - Heat exchanger; 201 - First heat exchange section; 202 - Second heat exchange section; 2021 - Second heat exchange section A; 2022 - Second heat exchange section B; 30 - Fan system; 301 - Upper diffuser section; 302 - Lower diffuser section; 40 - Drainage baffle; 401 - Airflow hole; 50 - Drainage channel; 60 - First heat exchange space; 70 - Second heat exchange space; 80-Air guide vane; 801-Lower air guide vane; 802-Front air guide vane 90-Air duct baffle. Detailed Implementation

[0018] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0019] Throughout the specification and claims, the following terms will have at least the meaning explicitly associated herein, unless the context otherwise requires. The meanings defined below are not intended to limit the terms, but are merely illustrative examples. In the description of this invention, the phrase "in one embodiment" does not necessarily refer to the same embodiment, although it may refer to the same embodiment. Similarly, the phrase "in some embodiments," as used herein, does not necessarily refer to the same embodiment when used multiple times, although it may refer to the same embodiment. As used herein, the term "or" is an inclusive "or" operator and is equivalent to the term "and / or," unless the context clearly specifies otherwise. The term "based on" is not exclusive and allows for reliance on additional factors not described, unless the context clearly specifies otherwise. The word "exemplary" herein means "used as an example, instance, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as superior to or better than other embodiments. The scope of this invention is limited only by the scope of the appended claims, and any examples set forth in this specification are not intended to be limiting, but merely illustrate some of the many possible embodiments of the claimed invention. The various embodiments provided in this invention should not be construed as limiting the scope of protection of this invention.

[0020] In the description of this invention, 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," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] In this invention, unless otherwise explicitly 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 or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] Example like Figures 1-6 As shown, the first aspect of this application provides a wall-mounted air conditioner, the air conditioner comprising: The housing 10 has an air inlet 101 and an air outlet 102; The heat exchanger 20 and the fan system 30 are arranged between the air inlet 101 and the air outlet 102, and an installation cavity is formed between the front side of the heat exchanger 20 and the front side of the casing 10. Drainage baffle 40, at least a portion of which is disposed in the mounting cavity and defines a drainage channel 50 between the baffle 40 and the front side of the housing 10; The air inlet of the diversion channel 50 can be connected to the air outlet of the fan system 30, and the air outlet can be connected to the air inlet of the heat exchanger 20, so that the airflow after the initial heat exchange in the heat exchanger 20 can be guided by the diversion channel 50 and flow back to the air inlet of the heat exchanger 20 for secondary heat exchange.

[0025] In this embodiment, a flow channel 50 is defined between the flow-guiding baffle 40 and the front side of the casing 10, guiding part of the airflow after initial heat exchange by the heat exchanger 20 back to its air inlet side. This allows the airflow to participate in heat exchange again without increasing energy consumption, thereby extending the heat exchange path and improving heat exchange efficiency without increasing the heat exchanger area. At the same time, the return airflow continuously scours the surface of the heat exchanger 20, weakening the boundary layer thermal resistance, making the temperature distribution of the heat exchanger 20 more uniform, reducing local low or high temperature areas, thereby reducing the risk of frosting and delaying performance degradation. The flow channel 50 is located inside the installation cavity, without occupying additional internal space of the casing 10, maintaining the compact size of the wall-mounted air conditioner.

[0026] Furthermore, in some possible embodiments, the bottom of the heat exchanger 20 is open and mounted above the fan system 30. Preferably, the heat exchanger 20 is constructed as an inverted V shape. The heat exchanger 20 includes a first heat exchange portion 201 that is inclined and located near the rear side of the housing 10, and a second heat exchange portion 202 that is inclined and located near the front side of the housing 10. A first heat exchange space 60 is defined between the first heat exchange portion 201 and the rear side of the housing 10, and a second heat exchange space 70 is defined between the second heat exchange portion 202 and the flow guide baffle 40. The second heat exchange space 70 is closer to the inlet of the fan system 30 than the first heat exchange space 60, and the airflow velocity at the second heat exchange space 70 is higher than the airflow velocity at the first heat exchange space 60. At least a portion of the airflow, after exiting the guide channel 50, can flow from the high-velocity second heat exchange space 70 to the low-velocity first heat exchange space 60, so that at least a portion of the airflow guided by the guide channel 50 can exchange heat again with the first heat exchange section 201 of the heat exchanger 20.

[0027] In this embodiment, the heat exchanger 20 is constructed in an inverted V shape and mounted above the fan system 30. The first heat exchange section 201 and the rear side of the casing 10 form a first heat exchange space 60, and the second heat exchange section 202 and the guide baffle 40 form a second heat exchange space 70. The second heat exchange space 70 is closer to the inlet of the fan system 30 and has a higher airflow velocity than the first heat exchange space 60. With this arrangement, the return airflow discharged from the guide channel 50 can flow from the high-velocity second heat exchange space 70 to the low-velocity first heat exchange space 60, thereby improving the heat exchange capacity of the originally low-velocity first heat exchange space 60. The heat exchange section 201 is reintegrated into the high-efficiency heat exchange cycle, making the temperature field of the entire heat exchanger 20 more uniform, avoiding local overcooling or overheating, delaying frost formation and extending the continuous high-efficiency operation time; at the same time, the return airflow comes into full contact with the first heat exchange section 201 again in the first heat exchange space 60, realizing secondary heat exchange, further increasing the total heat exchange, making the air temperature delivered by the air outlet 102 more stable and gentle, and making the user feel more comfortable; this structure uses the difference in flow velocity to guide the airflow path, eliminating the need for additional fans or valves, simplifying the control logic and reducing energy consumption, while maintaining the advantages of the compact and lightweight wall-mounted air conditioner.

[0028] Furthermore, in some possible implementations, the flow baffle 40 is provided with a plurality of air flow holes 401, one end of which is connected to the flow channel 50 and the other end is connected to the second heat exchange space 70. At least a portion of the airflow entering the drainage channel 50 can enter the second heat exchange space 70 through several airflow holes 401 and flow to the first heat exchange space 60.

[0029] In this embodiment, several airflow holes 401 are opened on the diversion baffle 40, so that the diversion channel 50 is directly connected to the second heat exchange space 70. The return airflow entering the diversion channel 50 can be evenly distributed to the second heat exchange space 70 through the airflow holes 401, and then flows to the first heat exchange space 60 with a low flow velocity. Through the hole array distribution, the return air volume is finely divided, avoiding local turbulence and noise caused by concentrated impact, while ensuring that the second heat exchange space 70 receives sufficient heat replenishment for refrigerant evaporation, and the first heat exchange space 60 is also continuously flushed by airflow. The surface temperature of the entire heat exchanger 20 is more uniform, and the risk of frost is further reduced. The evenly distributed secondary heat exchange path extends the effective heat exchange time, reduces the temperature fluctuation of the air supply at the outlet 102, and makes the body feel softer. This solution only requires opening a hole array on the diversion baffle 40, without adding moving parts or control programs. The structure is simple and reliable, and maintains the compact, lightweight, and low-noise characteristics of the wall-mounted air conditioner.

[0030] Furthermore, in some possible embodiments, the portion of the drainage baffle 40 located in the mounting cavity extends from top to bottom, and a plurality of airflow holes 401 are divided into multiple groups of airflow holes from top to bottom. In the two adjacent airflow hole groups, the diameter of the airflow hole 401 in the upper airflow hole group is a, and the diameter of the airflow hole 401 in the lower airflow hole group is b, where a > b.

[0031] In this embodiment, the section of the baffle 40 placed in the mounting cavity is made into a top-to-bottom extension plate, and multiple groups of airflow holes are divided on its surface along the height direction. The aperture a of the upper airflow hole group is larger than the aperture b of the lower airflow hole group, forming an aperture gradient of "larger at the top and smaller at the bottom". Since the upper region is farther from the inlet of the fan system 30, has higher static pressure but lower flow velocity, the larger a allows the return airflow to be ejected preferentially from this location, directly compensating for the low flow velocity and low heat exchange zone that is prone to occur in the upper part of the first heat exchange section 201. The lower region itself has a high flow velocity, and the smaller b prevents excessive return air from causing local turbulence, while maintaining sufficient secondary air volume to sustain the continuous evaporation of the second heat exchange section 202. The difference in aperture allows for a reasonable distribution of return airflow along the height, ensuring a synchronous and uniform temperature field on both inverted V-shaped wings of the heat exchanger. This delays the frost initiation point and extends the high-efficiency heat exchange range. Simultaneously, the airflow is dispersed into multiple fine jets, broadening the noise spectrum and making the entire unit operate more quietly. This design achieves self-regulation of airflow solely through changes in perforation size, with no moving parts, resulting in high reliability and meeting the comprehensive requirements of wall-mounted air conditioners for slimness, low noise, and high energy efficiency.

[0032] Furthermore, in some possible implementations, the second heat exchange portion 202 includes a second heat exchange portion A2021 arranged with a first slope and a second heat exchange portion B2022 arranged with a second slope, the bottom of the second heat exchange portion A2021 being connected to the top of the second heat exchange portion B2022, and the first slope being less than the second slope. Several airflow holes 401 are divided into three groups of airflow holes from top to bottom. The large-diameter airflow hole group at the top corresponds horizontally to the second heat exchange part A2021. The medium-diameter airflow hole group in the middle corresponds horizontally to the connection position between the second heat exchange part A2021 and the second heat exchange part B2022. The small-diameter airflow hole group at the bottom corresponds horizontally to the second heat exchange part B2022.

[0033] In this embodiment, the inverted V-shaped second heat exchange section 202 is divided into a "gentle slope" second heat exchange section A2021 and a "steep slope" second heat exchange section B2022, with the first slope being less than the second slope, forming a zigzag airfoil that is higher in the front and lower in the back. Simultaneously, the three sets of airflow holes on the baffle 40 are laterally aligned according to their height and airfoil position—the upper large-diameter airflow hole set directly faces the second heat exchange section A2021, the middle medium-diameter airflow hole set directly faces the connection point between the two sections, and the lower small-diameter airflow hole set directly faces the second heat exchange section B2022. The upper gentle slope area originally has the lowest flow velocity; the large-diameter hole instantly injects a large amount of return airflow, directly increasing the heat exchange intensity of the second heat exchange section A2021. The middle connection point is prone to vortices due to the sudden change in slope; the medium-diameter hole suppresses these vortices with a moderate airflow and replenishes the heat required for refrigerant evaporation. The lower steep slope area itself has a high flow velocity; the small-diameter hole only provides a small amount of fine jet, avoiding overshoot that could lead to noise and energy waste. The coupling of the three-section aperture and the folded airfoil ensures that the surface wind speed and temperature field of the inverted V-shaped heat exchanger 20 is synchronously uniform, the frost initiation point is further shifted backward, and the continuous high-efficiency operation range is extended; the lateral correspondence ensures that each return airflow can vertically scour the corresponding airfoil, extending the effective heat exchange time, and the air supply temperature at the air outlet 102 is more stable, resulting in a gentler user experience; this solution only requires differentiated punching and bending forming, without adding moving parts, maintaining the characteristics of the wall-mounted air conditioner being thin, low-noise, and high-energy-efficiency.

[0034] Furthermore, in some possible implementations, the air conditioner also includes: The air guide plate 80 is movably disposed at the air outlet 102 and is used to open or close the air outlet 102. When in motion, the air guide plate 80 can create at least a first air supply path, a second air supply path, and a third air supply path inside the air conditioner. in In the first air supply path, all the airflow delivered by the fan system 30 is discharged through the air outlet 102; In the second air supply path, part of the airflow delivered by the fan system 30 is discharged through the air outlet 102, and the other part is guided by the flow channel 50 to the air inlet side of the heat exchanger 20 for secondary heat exchange. In the third air supply path, all the airflow delivered by the fan system is guided through the diversion channel to the air inlet side of the heat exchanger for secondary heat exchange.

[0035] In this embodiment, a movable air guide plate 80 is added at the air outlet 102. Through three opening states of the same component, three air supply paths of "full external exhaust, partial internal circulation, and full internal circulation" can be instantly switched inside the air conditioner: In the first air supply path, the air guide plate 80 is fully open, and all the airflow output by the fan system 30 is blown into the room through the air outlet 102 to achieve rapid cooling or heating; In the second air supply path, the air guide plate 80 is partially closed, and the air outlet 102 and the diversion channel 50 pass through the air simultaneously. Part of the airflow is directly sent into the room, and the other part is forced into the diversion channel 50 and flows back to the air inlet side of the heat exchanger 20 for secondary heat exchange, which maintains the indoor air volume and improves the heat exchange efficiency; In the third air supply path, the air guide plate 80 is fully closed, and all the airflow is locked into the diversion channel 50 and circulates repeatedly through the heat exchanger 20 inside the casing 10, so that the refrigerant evaporation temperature rises or falls rapidly, shortens the time for the compressor to reach stable operating conditions, and avoids cold or hot air blowing directly on the human body at the beginning of the start-up. The three paths share a single air guide plate 80 and air diversion channel 50, eliminating the need for additional dampers or fans. The structure is simple and the control is reliable. It can be flexibly switched at different operating stages, taking into account rapid temperature adjustment, energy saving and noise reduction, and a comfortable experience, while maintaining the advantages of wall-mounted air conditioners being thin and compact.

[0036] Furthermore, in some possible embodiments, the air outlet 102 includes a lower air outlet 1021 disposed on the front side of the bottom of the housing 10, and a front air outlet 1022 disposed on the bottom side of the front of the housing 10. The air guide plate 80 includes a lower air guide plate 801 disposed at the lower air outlet 1021 and a front air guide plate 802 disposed at the front air outlet 1022; The first air supply path includes a first air supply path system A and a first air supply path B; in Under the first air supply path A, all the airflow delivered by the fan system 30 is discharged through the lower air outlet 1021; Under the first air supply path B, all the airflow delivered by the fan system 30 is discharged through the front air outlet 1022.

[0037] In this embodiment, the single air outlet 102 is divided into a lower air outlet 1021 on the bottom front side and a front air outlet 1022 on the front bottom side, and correspondingly, independently flip-able lower air guide plate 801 and front air guide plate 802 are provided. This allows the air guide plate 80 to further subdivide into two completely external exhaust sub-paths within the "first air supply path": Under the first air supply path A, the lower air guide plate 801 is open and the front air guide plate 802 is closed, and all airflow flows downward along the wall through the lower air outlet 1021, forming a floor heating effect; Under the first air supply path B, the front air guide plate 802 is open and the lower air guide plate 801 is closed, and all airflow flows horizontally through the front air outlet 1022, achieving rapid and uniform cooling. With the independent opening and closing of two air guide plates, the air conditioner can instantly switch between two comfortable experiences: "warm air under the feet" and "cool air in front of the face" without changing the fan speed or internal air duct. At the same time, it maintains the circulation function of the second and third air supply paths. It achieves four modes of heating, cooling, rapid temperature adjustment, and internal circulation enhanced heat exchange, all sharing a single air outlet and air intake channel 50. The structure is compact and the control is simple, meeting the comprehensive requirements of wall-mounted air conditioners for lightness, low noise, high energy efficiency, and high comfort.

[0038] Furthermore, in some possible embodiments, the outlet side of the fan system 30 is provided with an upper diffuser section 301 and a lower diffuser section 302, the upper diffuser section 301 being disposed near the front side of the housing 10, and the lower diffuser section 302 being disposed near the rear side of the housing 10. The bottom end of the flow-draining baffle 40 is connected to the upper diffuser section 301 near the front side of the housing 10, and the top end extends toward the top of the housing 10. in In the first air supply path A, the lower air guide plate 801 rotates to the lower air guide plate position one. At this time, one end of the lower air guide plate 801 is located near the rear side of the upper diffuser section 301 and the other end is located at the front edge of the lower air outlet 1021. A lower air outlet channel is formed between the lower air guide plate 801 and the lower diffuser section 302, which connects to the lower air outlet 1021. This allows the airflow delivered by the fan system 30 to be completely sent out through the lower air outlet 1021 while blocking the flow channel 50 from the outlet of the fan system 30. and / or Under the first air supply path B, the lower air guide plate 801 closes the lower air outlet 1021, and the front air guide plate 802 opens the front air outlet 1022. When the front air guide plate 802 opens the front air outlet 1022, it has a first open state and a second open state. When the front air guide plate 802 is in the first open state, the rotating end of the front air guide plate 802 is located at the upper edge of the front air outlet 1022, and the free end is located near the front side of the upper diffuser section 301, so as to block the air supply channel 50 from the outlet of the fan system 30 while allowing the air supplied by the fan system 30 to flow smoothly. All airflow is sent out through the front air outlet 1022. When the front air guide plate 802 is in the second open state, the rotating end of the front air guide plate 802 is located at the upper edge of the front air outlet 1022, and the free end extends to the outside of the housing 10. At this time, a duct baffle 90 is provided between the upper edge of the front air outlet 1022 and the front side of the upper diffuser section 301. The duct baffle 90 seals the bottom air inlet side of the flow channel 50, so that while blocking the flow channel 50 from the outlet of the fan system 30, all the airflow sent out by the fan system 30 is sent out through the front air outlet 1022. and / or In the second air supply path, the lower air guide plate 801 is controlled to rotate to the second lower air guide plate position, the front air guide plate 802 closes the front air outlet 1022, and when the lower air guide plate 801 is in the second lower air guide plate position, the lower air guide plate 801 is inclinedly set at the lower air outlet 1021 position. An inner air duct section connecting the flow channel 50 is formed between the inclined lower air guide plate 801 and the upper diffuser section 301, and an outer air duct section connecting the lower air outlet 1021 is formed between the inclined lower air guide plate 801 and the lower diffuser section 302, so that part of the airflow delivered by the fan system 30 is guided to the flow channel 50 through the inner air duct section, and the other part is delivered to the lower air outlet 1021 through the outer air duct section. and / or In the third air supply path, the lower air guide plate 801 closes the lower air outlet 1021, and the front air guide plate 802 closes the front air outlet 1022, so that all the airflow sent by the fan system 30 can be guided through the diversion channel 50 to the air inlet side of the heat exchanger 20 for secondary heat exchange.

[0039] In this embodiment, the outlet side of the fan system 30 is divided into an upper diffuser section 301 and a lower diffuser section 302. The bottom end of the diversion baffle 40 is fixed to the upper diffuser section 301 near the front of the casing 10, so that the bottom inlet of the diversion channel 50 is exactly at the "front edge" of the upper diffuser section 301. This position is also the "throat" area that the lower guide plate 801 and the front guide plate 802 must pass through when they are closed / partially open. With the help of this throat structure, the same lower guide plate 801 only needs to swing between two extreme angles to instantly switch between "completely blocking the diversion inlet" and "partially allowing the diversion inlet". Combined with the two outward turning angles of the front guide plate 802 or the bottom sealing of the air duct baffle 90, four modes of first air supply path A, first air supply path B, second air supply path, and third air supply path can be realized. In the first air supply path A, the lower air guide plate 801 overlaps with the rear side of the upper diffuser section 301 and the front edge of the lower air outlet 1021, forming a lower air outlet channel that only leads to the lower air outlet 1021. The flow channel 50 is completely blocked, and all the airflow is sent out close to the ground, so the heating effect of "floor heating" is immediately apparent. In the first air supply path B, the lower air guide plate 801 closes the lower air outlet 1021, and the front air guide plate 802 rotates downward with the upper edge of the front air outlet 1022 as the pivot axis: the first open state directly covers the inlet of air, and the second open state allows the air duct baffle 90 to complete the bottom seal. Both states ensure that the inlet channel 50 has zero air leakage and that all airflow is delivered horizontally to achieve rapid and uniform cooling. In the second air supply path, the lower air guide plate 801 is stopped in the middle inclined position. The same air guide plate also acts as a "partition", dividing the fan outlet into two: the inner side and the upper diffuser section 301 form an inner air duct section leading to the diversion channel 50, and the outer side and the lower diffuser section 302 form an outer air duct section leading to the lower air outlet 1021. Without the need for an additional air damper, dual air supply of "partial internal circulation and partial external exhaust" can be achieved, which not only provides fresh hot and cold air to the room, but also continuously enhances the secondary heat exchange of the heat exchanger 20. In the third air supply path, the lower air guide plate 801 completely closes the lower air outlet 1021, and the front air guide plate 802 completely closes the front air outlet 1022. The fan outlet and the two external air outlets are cut off, and all airflow is forced into the diversion channel 50, circulating at high speed inside the casing 10. The surface wind speed of the heat exchanger 20 is doubled, and the evaporation temperature rises or falls rapidly, achieving "rapid heating / rapid cooling" at the moment of startup without air blowing on people from the air outlet.

[0040] By utilizing the natural height difference between the upper diffuser section 301 and the lower diffuser section 302, and the throat sealing surface formed by the precise "positioning" of the bottom of the baffle plate 40, the air guide plate 80 can simultaneously adjust the air direction and switch the air path during rotation. It requires no additional motor, pull rod or damper, has the fewest structural components and the simplest control logic, yet can seamlessly switch between four operating conditions: heating, cooling, mixed circulation and full circulation. While maintaining the compact, thin and low noise of the wall-mounted air conditioner, it achieves a high degree of unity between rapid temperature adjustment, energy saving and noise reduction and comfortable air delivery.

[0041] Furthermore, in some possible implementations, the wall-mounted air conditioner also includes: The air duct baffle 90 is rotatably positioned at the bottom air intake side of the diversion channel 50. When rotating, the air duct baffle 90 has two positions: air duct baffle position one and air duct baffle position two. When the air duct baffle 90 is in air duct baffle position one, the air duct baffle 90 extends laterally, with one end at the upper edge of the front air outlet 1022 and the other end at the upper diffuser section 301 near the front of the casing 10, so as to block the connection between the outlet of the fan system 30 and the diversion channel 50. When the air duct baffle 90 is in air duct baffle position two, the air duct baffle 90 extends longitudinally and is positioned in the middle of the diversion channel 50, so as to divide the bottom area of ​​the diversion channel 50 into two sub-diversion channel sections that are both connected to the outlet of the fan system 30. in In the first air supply path, the duct baffle 90 rotates to a position where the duct baffle is located; In the second and third air supply paths, the duct baffle 90 rotates to position two.

[0042] In this embodiment, a rotatable air duct baffle 90 is added to the bottom air intake side of the air diversion channel 50. Through two extreme positions of "lateral blocking" and "vertical separation", a dual sealing and diversion means are provided for the air guide plate 80. The air duct baffle extends laterally, with its front end resting on the upper edge of the front air outlet 1022 and its rear end pressing against the edge of the upper expansion section 301 near the front side of the casing 10, forming a rigid seal that completely cuts off the connection between the outlet of the fan system 30 and the diversion channel 50, ensuring that the first air supply path is completely exhausted with zero air leakage, improving air supply efficiency and reducing noise. The second air duct baffle is vertically positioned in the center of the air intake channel 50, dividing the bottom air intake side into two parallel sub-air intake channel sections. Both sections are connected to the fan outlet simultaneously, so that the airflow of the second air supply path part of the internal circulation and the third air supply path full internal circulation is pre-evenly distributed, avoiding unilateral impact that could cause eddies or howling, and making secondary heat exchange more stable and efficient.

[0043] With the rigid sealing and uniform airflow distribution of the air duct baffle 90, the air conditioner can switch between the four air supply modes without relying on the absolute sealing precision of the air guide plate 80. It can also ensure accurate exhaust air volume and sufficient internal circulation air volume, achieving a high degree of unity between rapid temperature adjustment, energy saving and noise reduction and comfortable air supply, while maintaining the compact and thin structural advantages of wall-mounted air conditioners.

[0044] Furthermore, in some possible embodiments, the outlet side of the fan system 30 is provided with an upper diffuser section 301 and a lower diffuser section 302, the upper diffuser section 301 being disposed near the front side of the housing 10, and the lower diffuser section 302 being disposed near the rear side of the housing 10. The flow baffle 40 is an arc-shaped plate whose bottom end is rotatably connected to the upper diffuser section 301 near the front side of the housing 10; in In the first air supply path, the diversion baffle 40 is controlled to rotate around its bottom rotating end toward the side away from the heat exchanger 20, so as to increase the heat exchange space volume between the heat exchanger 20 and the diversion baffle 40. and / or In the second air supply path, the diversion baffle 40 is controlled to rotate around its bottom rotating end toward the side closer to the heat exchanger 20 to increase the volume of the diversion channel 50 between the diversion baffle 40 and the casing 10. and / or In the third air supply path, the diversion baffle 40 is controlled to rotate around its bottom rotating end toward the side closer to the heat exchanger 20 to increase the volume of the diversion channel 50 between the diversion baffle 40 and the casing 10.

[0045] In this embodiment, by making the drainage baffle 40 into an arc-shaped plate with its bottom hinged to the front side of the upper diffuser section 301, the change in the cross-section of the "heat exchange space" and the "drainage channel" can be completed simultaneously by utilizing the single-axis motion of "rotation around the bottom". In the first air supply path, the arc plate flips outward, and the heat exchange space between the heat exchanger 20 and the flow baffle 40 expands instantly, reducing wind resistance and increasing air intake, so that all airflow is preferentially blown to the air outlet 102 to achieve rapid cooling / heating. In the second and third air supply paths, the arc-shaped plate retracts inward and forms a larger airflow channel 50 by closely adhering to the front wall of the casing 10. The return air volume increases accordingly, and the secondary heat exchange efficiency is improved. At the same time, the back of the arc-shaped plate guides the remaining airflow to the air outlet 102, keeping the air supply gentle.

[0046] By utilizing the swing of the same curved plate, the air conditioner can seamlessly switch between "large heat exchange space - full external exhaust" and "large air intake space - strong internal circulation" without the need for additional dampers or motors. It features a minimalist structure, reliable control, and balances rapid temperature adjustment, energy saving and noise reduction with comfortable air delivery, while maintaining the compact and lightweight advantages of wall-mounted air conditioners.

[0047] It should be noted that the flow guide baffle 40 is designed with a certain curvature. This curvature guides a significant amount of recirculating airflow to the first heat exchange space 60 at the back of the air conditioner, where the airflow velocity is slower. Simultaneously, different areas of the flow guide baffle 40 are designed with holes of different diameters and opening ratios, resulting in a more uniform flow field inside the air conditioner and more efficient heat exchange in the heat exchanger 20. Furthermore, in some possible implementations, the wall-mounted air conditioner has a cooling air supply mode and a heating air supply mode. When the air conditioner is running in cooling mode, the wall-mounted air conditioner is controlled to deliver air through the first air supply path B. When the air conditioner is running in heating mode, the wall-mounted air conditioner can adjust the air supply path according to the stage of operation of the heating mode. The heating mode of the wall-mounted air conditioner is divided into the heating start stage, the initial heating air supply stage and the normal heating air supply stage according to the order of operation. in When the wall-mounted air conditioner is in heating mode, it is controlled to supply air through the third air supply path. When the wall-mounted air conditioner is in the initial stage of heating and air supply, the wall-mounted air conditioner is controlled to supply air through the second air supply path. When the wall-mounted air conditioner is in the normal heating and air supply stage, it is controlled to supply air through the first air supply path A.

[0048] In this embodiment, the mechanical air supply path is dynamically bound to the cooling / heating operating conditions to form a "one-click three-stage" adaptive control logic: The cooling air supply mode locks the first air supply path B - the front air outlet 1022 horizontal air outlet. The cold air diffuses along the top and then naturally sinks, avoiding direct blowing on the human body. The cooling sensation is uniform and energy-saving. The heating mode automatically switches in sequence according to time: – During the heating start-up phase, it switches to the third air supply path, with both air outlets fully closed. All airflow circulates at high speed within the casing 10, causing the heat exchanger 20 temperature to rise rapidly and the compressor to quickly establish a pressure differential, shortening the user's waiting time; – During the initial heating air outlet phase, it switches to the second air supply path. Part of the airflow is gently delivered through the lower air outlet 1021, while the other part continues to circulate internally to maintain the pipe temperature, preventing cold air from blowing directly on the room and ensuring continuous temperature rise; – During the normal heating air outlet phase, it switches to the first air supply path A. All hot air is delivered close to the ground through the lower air outlet 1021, forming a "floor heating" type of rising airflow. The vertical temperature difference in the room is small, making the room feel warm but not hot.

[0049] With the coordinated swing of the air guide plate 80 and the air duct baffle 90, the air conditioner completes the directional air supply of "cooling from the top and heating from the bottom" within a single air duct structure. No manual adjustment by the user is required throughout the process, achieving a high degree of unity between rapid temperature adjustment, energy saving and noise reduction and comfortable experience, while maintaining the compact and lightweight advantages of wall-mounted air conditioners.

[0050] Furthermore, in some possible implementations, when the wall-mounted air conditioner is in the heating start-up phase, the fan system is controlled to operate at a speed of V1. When the wall-mounted air conditioner is in the initial stage of heating and air output, the fan system is controlled to run at a speed of V2. When the wall-mounted air conditioner is in the normal heating and air output stage, the fan system is controlled to run at V3 speed; Where V1 < V2 < V3.

[0051] Specifically: During the heating start-up phase, the speed V1 is at its lowest, and the airflow circulates almost only inside the casing 10. The noise is suppressed to an acceptable range at night. At the same time, the surface wind speed of the heat exchanger 20 decreases, the heat exchange decreases, the pipe temperature rises rapidly, and the compressor quickly establishes a high pressure difference, shortening the user's waiting time. During the initial heating phase, the fan speed increases to V2, and some airflow begins to be gently delivered through the lower air outlet 1021, ensuring a slightly warm feeling in the room while avoiding cold airflow blowing directly on people; the remaining airflow continues to circulate internally, maintaining the pipe temperature to continue rising and preventing heat loss. During the normal heating and air output phase, the speed increases to V3, and the maximum air volume is delivered all along the floor. The hot air quickly fills the room using the "floor heating effect", and the vertical temperature difference is quickly smoothed out, resulting in a uniform room temperature and high heating efficiency.

[0052] The stepped speed increase from V1 to V2 to V3 is completed simultaneously with the air delivery path switching, achieving a seamless transition from "quiet heat storage to gentle heating to efficient temperature rise." Users can enjoy a fast, quiet, and energy-saving heating experience without manual adjustment, while maintaining the slim and compact structural advantages of wall-mounted air conditioners.

[0053] More specifically, when the indoor unit pipe temperature of the air conditioner is greater than T1, the cross-flow fan operates at a low speed of V2 (below the set speed). Part of the airflow is blown towards the wall to avoid the cold air blowing directly on people and causing discomfort, but this gust of air can raise the indoor temperature. Another part of the airflow returns to the evaporator to accelerate the rise of the indoor unit pipe temperature. When the indoor unit pipe temperature of the air conditioner is greater than T2, the air intake baffle 40 is controlled to draw air away from the heat exchanger to increase the air intake, and the cross-flow fan increases to the set speed V3, allowing the hot air to quickly reach the ground and achieve underfloor heating-style air supply.

[0054] In the above embodiments of this application, the descriptions of each embodiment have their own emphasis. Parts not described in detail in a certain embodiment can be referred to in the relevant descriptions of other embodiments. The steps illustrated in the related flowcharts can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowcharts, in some cases, the steps shown or described may be performed in a different order than that shown here. In other words, the order of steps described in the foregoing embodiments is merely an example. Reasonable adjustments to the order of steps based on the content of the embodiments of this application are also within the protection scope of the embodiments of this application.

[0055] The sequence numbers or order of description of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0056] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. 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. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0057] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A wall-mounted air conditioner, characterized in that, The air conditioner includes: The housing (10) has an air inlet (101) and an air outlet (102). A heat exchanger (20) and a fan system (30) are arranged between the air inlet (101) and the air outlet (102), and an installation cavity is formed between the front side of the heat exchanger (20) and the front side of the casing (10); A drainage baffle (40) is disposed at least in the mounting cavity and defines a drainage channel (50) between the baffle (40) and the front side of the housing (10). The air inlet of the flow channel (50) can be connected to the air outlet of the fan system (30), and the air outlet can be connected to the air inlet of the heat exchanger (20), so that the airflow after the initial heat exchange through the heat exchanger (20) can be guided by the flow channel (50) and flow back to the air inlet of the heat exchanger (20) for secondary heat exchange.

2. The wall-mounted air conditioner according to claim 1, characterized in that, The heat exchanger (20) has an open bottom and is mounted above the fan system (30). The heat exchanger (20) includes a first heat exchange portion (201) that is inclined and located near the rear side of the casing (10) and a second heat exchange portion (202) that is inclined and located near the front side of the casing (10). A first heat exchange space (60) is defined between the first heat exchange portion (201) and the rear side of the casing (10). A second heat exchange space (70) is defined between the second heat exchange portion (202) and the flow guide baffle (40). The second heat exchange space (70) is closer to the inlet of the fan system (30) than the first heat exchange space (60). The airflow velocity at the second heat exchange space (70) is higher than the airflow velocity at the first heat exchange space (60). At least a portion of the airflow, after exiting the guide channel (50), can flow from the high-velocity second heat exchange space (70) to the low-velocity first heat exchange space (60), so that at least a portion of the airflow guided by the guide channel (50) can exchange heat again with the first heat exchange section (201) of the heat exchanger (20).

3. The wall-mounted air conditioner according to claim 2, characterized in that, The flow-guiding baffle (40) is provided with a plurality of air flow holes (401), one end of the air flow hole (401) is connected to the flow-guiding channel (50) and the other end is connected to the second heat exchange space (70). At least a portion of the airflow entering the drainage channel (50) can enter the second heat exchange space (70) through a plurality of airflow holes (401) and flow to the first heat exchange space (60).

4. The wall-mounted air conditioner according to claim 3, characterized in that, The portion of the drainage baffle (40) located in the mounting cavity extends from top to bottom, and the plurality of airflow holes (401) are divided into multiple groups of airflow holes from top to bottom; In the two adjacent airflow hole groups, the diameter of the airflow hole (401) in the upper airflow hole group is a, and the diameter of the airflow hole (401) in the lower airflow hole group is b, where a > b.

5. The wall-mounted air conditioner according to claim 4, characterized in that, The second heat exchange section (202) includes a second heat exchange section A (2021) arranged with a first slope and a second heat exchange section B (2022) arranged with a second slope, wherein the bottom of the second heat exchange section A (2021) is connected to the top of the second heat exchange section B (2022), and the first slope is less than the second slope; The plurality of airflow holes (401) are divided into three groups of airflow holes from top to bottom. The large-diameter airflow hole group at the top corresponds laterally to the second heat exchange part A (2021), the medium-diameter airflow hole group in the middle corresponds laterally to the connection position of the second heat exchange part A (2021) and the second heat exchange part B (2022), and the small-diameter airflow hole group at the bottom corresponds laterally to the second heat exchange part B (2022).

6. The wall-mounted air conditioner according to any one of claims 1-5, characterized in that, The air conditioner also includes: An air guide plate (80) is movably disposed at the air outlet (102) for opening or closing the air outlet (102). When the air guide plate (80) is in motion, it can form at least a first air supply path, a second air supply path and a third air supply path inside the air conditioner. in In the first air supply path, all the airflow delivered by the fan system (30) is discharged through the air outlet (102); In the second air supply path, part of the airflow delivered by the fan system (30) is discharged through the air outlet (102), and the other part is guided by the flow channel (50) to the air inlet side of the heat exchanger (20) for secondary heat exchange; Under the third air supply path, all the airflow sent out by the fan system is guided by the flow channel to the air inlet side of the heat exchanger (20) for secondary heat exchange.

7. The wall-mounted air conditioner according to claim 6, characterized in that, The air outlet (102) includes a lower air outlet (1021) disposed on the front side of the bottom of the housing (10) and a front air outlet (1022) disposed on the bottom side of the front part of the housing (10). The air guide plate (80) includes a lower air guide plate (801) disposed at the lower air outlet (1021) and a front air guide plate (802) disposed at the front air outlet (1022). The first air supply path includes a first air supply path system A and a first air supply path B; in Under the first air supply path A, all the airflow delivered by the fan system (30) is discharged through the lower air outlet (1021); Under the first air supply path B, all the airflow delivered by the fan system (30) is discharged through the front air outlet (1022).

8. The wall-mounted air conditioner according to claim 7, characterized in that, The outlet side of the fan system (30) has an upper diffuser section (301) and a lower diffuser section (302). The upper diffuser section (301) is located close to the front side of the housing (10), and the lower diffuser section (302) is located close to the rear side of the housing (10). The bottom end of the flow-draining baffle (40) is connected to the upper diffuser section (301) near the front side of the housing (10), and the top end extends toward the top of the housing (10). in Under the first air supply path A, the lower air guide plate (801) rotates to the lower air guide plate position one. At this time, one end of the lower air guide plate (801) is located near the rear side of the upper diffuser section (301) and the other end is located at the front edge of the lower air outlet (1021). A lower air outlet channel is formed between the lower air guide plate (801) and the lower diffuser section (302) to connect with the lower air outlet (1021), so that the airflow sent by the fan system (30) can be completely sent out through the lower air outlet (1021) while blocking the connection between the outlet of the fan system (30) and the diversion channel (50). and / or Under the first air supply path B, the lower air guide plate (801) closes the lower air outlet (1021), and the front air guide plate (802) opens the front air outlet (1022). When the front air guide plate (802) opens the front air outlet (1022), it has a first open state and a second open state. When the front air guide plate (802) is in the first open state, the rotating end of the front air guide plate (802) is located at the upper edge of the front air outlet (1022), and the free end is located at the position of the upper diffuser section (301) near the front side of the casing (10). This is to block the outlet of the fan system (30) from connecting to the diversion channel (50) while allowing the fan system (30) to deliver air. All airflow is sent out through the front air outlet (1022). When the front air guide plate (802) is in the second open state, the rotating end of the front air guide plate (802) is located at the upper edge of the front air outlet (1022), and the free end extends to the outside of the housing (10). At this time, a duct baffle (90) is provided between the upper edge of the front air outlet (1022) and the front side of the upper diffuser section (301). The duct baffle (90) seals the bottom air inlet side of the flow channel (50), so that it can also block the outlet of the fan system (30) from connecting to the flow channel (50) while allowing all the airflow sent out by the fan system (30) to be sent out through the front air outlet (1022). and / or In the second air supply path, the lower air guide plate (801) is controlled to rotate to the second lower air guide plate position, the front air guide plate (802) closes the front air outlet (1022), when the lower air guide plate (801) is in the second lower air guide plate position, the lower air guide plate (801) is inclinedly arranged at the lower air outlet (1021) position, the inclined lower air guide plate (801) and the upper diffuser section (301) form an inner air duct section that connects to the flow channel (50), the inclined lower air guide plate (801) and the lower diffuser section (302) form an outer air duct section that connects to the lower air outlet (1021), so that part of the airflow sent by the fan system (30) is guided to the flow channel (50) through the inner air duct section, and the other part is sent to the lower air outlet (1021) through the outer air duct section; and / or In the third air supply path, the lower air guide plate (801) closes the lower air outlet (1021), and the front air guide plate (802) closes the front air outlet (1022), so that all the airflow sent by the fan system (30) can be guided by the flow channel (50) to the air inlet side of the heat exchanger (20) for secondary heat exchange.

9. The wall-mounted air conditioner according to claim 8, characterized in that, The wall-mounted air conditioner also includes: A duct baffle (90) is rotatably disposed at the bottom air intake side of the flow channel (50). When the duct baffle (90) rotates, it has a duct baffle position one and a duct baffle position two. When the duct baffle (90) is in the duct baffle position one, the duct baffle (90) extends laterally, with one end located at the upper edge of the front air outlet (1022) and the other end located at the upper diffuser section (301) near the front side of the casing (10), so as to block the connection between the outlet of the fan system (30) and the flow channel (50). When the duct baffle (90) is in the duct baffle position two, the duct baffle (90) extends longitudinally and is disposed in the middle of the flow channel (50), so as to divide the bottom area of ​​the flow channel (50) into two sub-flow channel sections that are both connected to the outlet of the fan system (30). in In the first air supply path, the air duct baffle (90) rotates to one position of the air duct baffle; In the second air supply path and the third air supply path, the duct baffle (90) rotates to the second position of the duct baffle.

10. The wall-mounted air conditioner according to claim 6, characterized in that, The outlet side of the fan system (30) has an upper diffuser section (301) and a lower diffuser section (302). The upper diffuser section (301) is located close to the front side of the housing (10), and the lower diffuser section (302) is located close to the rear side of the housing (10). The drainage baffle (40) is an arc-shaped plate whose bottom end is rotatably connected to the upper diffuser section (301) near the front side of the housing (10); in In the first air supply path, the flow guide baffle (40) is controlled to rotate around its bottom rotating end toward the side away from the heat exchanger (20) to increase the heat exchange space volume between the heat exchanger (20) and the flow guide baffle (40). and / or In the second air supply path, the diversion baffle (40) is controlled to rotate around its bottom rotating end toward the side closer to the heat exchanger (20) to increase the volume of the diversion channel (50) between the diversion baffle (40) and the casing (10). and / or In the third air supply path, the flow guide baffle (40) is controlled to rotate around its bottom rotating end toward the side closer to the heat exchanger (20) to increase the volume of the flow guide channel (50) between the flow guide baffle (40) and the housing (10).

11. The wall-mounted air conditioner according to claim 8, characterized in that, The wall-mounted air conditioner has a cooling air supply mode and a heating air supply mode. When the air conditioner is running in cooling mode, the wall-mounted air conditioner is controlled to deliver air through the first air delivery path B. When the air conditioner is in heating mode, the wall-mounted air conditioner can adjust the air supply path according to the stage of operation of the heating mode. The heating mode of the wall-mounted air conditioner is divided into the heating start stage, the initial heating air supply stage and the normal heating air supply stage according to the order of operation. in When the wall-mounted air conditioner is in the heating start-up phase, the wall-mounted air conditioner is controlled to deliver air through the third air supply path. When the wall-mounted air conditioner is in the initial air outlet stage of heating, the wall-mounted air conditioner is controlled to supply air through the second air supply path. When the wall-mounted air conditioner is in the normal heating and air supply stage, the wall-mounted air conditioner is controlled to supply air through the first air supply path A.

12. The wall-mounted air conditioner according to claim 11, characterized in that, When the wall-mounted air conditioner is in the heating start-up phase, the fan system is controlled to operate at a speed of V1. When the wall-mounted air conditioner is in the initial air outlet stage of heating, the fan system is controlled to operate at a speed of V2. When the wall-mounted air conditioner is in the normal heating and air output stage, the fan system is controlled to operate at a speed of V3. Where V1 < V2 < V3.

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