Indoor unit and air conditioner

Abstract

The application relates to the technical field of air conditioning equipment, in particular to an indoor unit and an air conditioner. The indoor unit comprises a flow guide heating assembly arranged between a fan and a V-shaped heat exchanger, the flow guide heating assembly comprises an upper heat conduction plate, an electric heating element and a lower heat conduction plate arranged in sequence, a first flow guide surface is formed on the side of the upper heat conduction plate away from the electric heating element, a second flow guide surface is formed on the side of the lower heat conduction plate away from the electric heating element, and the distance between the first flow guide surface and the second flow guide surface gradually increases along the direction from the fan to the V-shaped heat exchanger, so that the shape of the flow guide heating assembly forms a wedge-shaped structure. The flow guide heating assembly with the wedge-shaped structure can play a physical flow distribution role when air flows, can effectively relieve the icing problem of the heat exchanger pipeline in the area far away from the flow guide heating assembly, and solves the problem of a heating dead angle.

Description

Technical Field

[0001] This application relates to the field of air conditioning equipment technology, and more specifically, to an indoor unit and an air conditioner. Background Technology

[0002] Modern air conditioners primarily offer cooling, heating, dehumidification, and ventilation modes. In dehumidification mode or low-temperature environments (such as outdoor temperatures below 5°C), the surface of the heat exchanger in the indoor unit may frost or ice over due to the low temperature. To address this issue, an electric heating strip is added near the heat exchanger in the indoor unit. This localized heating prevents ice formation on the heat exchanger surface, thus avoiding damage to the equipment or affecting cooling / heating performance.

[0003] The electric heating element 300′ of the existing indoor unit is mostly long and narrow, and its placement is mainly divided into two types: (1) placed between the heat exchanger 400 / 500 and the air outlet 120′, such as Figure 1 As shown; (2) Placed at the angle between the opening sides of the heat exchanger at 400 / 500, as shown. Figure 2 As shown. The heating effect of the electric heating belts in these two schemes is limited, only affecting the heat exchanger pipes in the vicinity, and cannot effectively solve the problem of ice formation on the surface of heat exchanger pipes far away from the electric heating belt. Utility Model Content

[0004] To address the aforementioned technical problems, this application provides an indoor unit and an air conditioner.

[0005] To achieve the above objectives, according to a first aspect of the application embodiments, an indoor unit is provided.

[0006] The indoor unit provided in this application embodiment includes:

[0007] The casing has an air duct inside, and air inlets and air outlets are formed on both sides of the air duct.

[0008] A fan is configured to introduce airflow from the air inlet into the air duct, and the air outlet of the fan is connected to the air inlet of the air duct.

[0009] A V-shaped heat exchanger includes a first heat exchanger and a second heat exchanger arranged vertically.

[0010] A flow-guiding heating assembly is disposed between the fan and the V-shaped heat exchanger. The flow-guiding heating assembly includes an upper heat-guiding plate, an electric heating element, and a lower heat-guiding plate stacked in sequence. The side of the upper heat-guiding plate opposite to the electric heating element forms a first flow-guiding surface, and the side of the lower heat-guiding plate opposite to the electric heating element forms a second flow-guiding surface. Along the direction from the fan to the V-shaped heat exchanger, the distance between the first flow-guiding surface and the second flow-guiding surface gradually increases so that the shape of the flow-guiding heating assembly forms a wedge-shaped structure.

[0011] Furthermore, the flow guiding heating assembly also includes a horizontally arranged rotating shaft, which is located at the end of the flow guiding heating assembly away from the fan, and is rotatably mounted on the housing.

[0012] Furthermore, the opening direction of the V-shaped heat exchanger is opposite to that of the fan, and the air outlet includes a first air outlet, which is located at the end of the casing away from the fan, and the first air outlet is located in the middle of the casing in the vertical direction.

[0013] Furthermore, a triangular region is formed between the end face of the first heat exchanger near the fan and the end face of the second heat exchanger near the fan, and the end of the flow guiding heating component away from the fan is located within the triangular region.

[0014] Furthermore, the upper heat-conducting plate forms a first clearance surface on the side away from the electric heating element, and the lower heat-conducting plate forms a second clearance surface on the side away from the electric heating element. Both the first clearance surface and the second clearance surface are located on the side of the flow-guiding heating assembly away from the fan. Along the direction from the fan to the V-shaped heat exchanger, the distance between the first clearance surface and the second clearance surface gradually decreases.

[0015] Furthermore, a water receiving tray and a diversion plate are provided inside the casing. The water receiving tray is located below the V-shaped heat exchanger, and the diversion plate is located between the first air outlet and the water receiving tray. The water receiving tray is configured to receive the condensate falling from the air outlet side of the V-shaped heat exchanger and divert it into the water receiving tray.

[0016] Furthermore, the air outlet includes a second air outlet, which is located at the end of the housing away from the fan, and the second air outlet is located at the bottom of the housing.

[0017] Furthermore, the diversion plate is rotatably connected to the housing, and the diversion plate has a first position and a second position during rotation;

[0018] In the first position, the diversion plate closes the second air outlet and opens the first air outlet. One end of the diversion plate is attached to the water receiving tray, and the height of the diversion plate gradually decreases along the direction that gradually approaches the water receiving tray.

[0019] In the second position, the deflector plate closes the first air outlet and opens the second air outlet.

[0020] Furthermore, the indoor unit has a cooling mode, in which the heating element of the airflow heating assembly is in a non-operating state, and the airflow plate is located at the first position.

[0021] Furthermore, the indoor unit has a heating mode, in which the heating element of the flow-guiding heating assembly is in operation, and the flow-guiding plate is located in the second position.

[0022] To achieve the above objectives, according to a second aspect of the application embodiments, an air conditioner is provided, which includes the indoor unit provided in the first aspect of the application embodiments.

[0023] The indoor unit provided in this application embodiment has the following beneficial effects: First, the wedge-shaped flow-guiding heating component can physically divert airflow as it passes through. The main airflow, which would normally concentrate near the angle of the V-shaped heat exchanger, is partially guided to the upper and lower sides of the V-shaped heat exchanger, improving the heating uniformity of the first and second heat exchanger pipes on both sides. This effectively alleviates the icing problem in heat exchanger pipes far from the flow-guiding heating component and solves the "heating dead zone" problem. Second, the wedge-shaped structure design formed by the upper and lower heat-guiding plates can create a larger first and second flow-guiding surface, increasing the contact area between the airflow and the flow-guiding heating component, thereby achieving a heating effect on the airflow. In addition, heat is not only transferred to the heat exchanger through the heating effect of the flow-guiding heating component on the airflow, but can also be indirectly preheated by the heat radiation of the heat-guiding plate directly on the nearby heat exchanger area. Attached Figure Description

[0024] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application. In the drawings:

[0025] Figure 1 A schematic diagram illustrating the installation relationship between a V-shaped heat exchanger and a heating device in an indoor unit, as provided in related technologies, is shown.

[0026] Figure 2 A schematic diagram illustrating the installation relationship between the V-shaped heat exchanger and the heating device in another type of indoor unit provided in the related art is shown.

[0027] Figure 3 A schematic cross-sectional view of the flow-guiding heating assembly in the indoor unit provided in an embodiment of this application is given;

[0028] Figure 4 A schematic cross-sectional view of the indoor unit provided in an embodiment of this application is given;

[0029] Figure 5 The schematic diagram shows the structure of the indoor unit provided in the embodiments of this application in cooling or dehumidification mode;

[0030] Figure 6A schematic diagram of the indoor unit provided in the embodiment of this application in heating mode is given.

[0031] In the picture:

[0032] 100. Housing;

[0033] 110. Air duct;

[0034] 120. First air outlet;

[0035] 130. Second air outlet;

[0036] 200. Fan;

[0037] 300. Flow guiding heating component;

[0038] 310. Install the heat-conducting plate;

[0039] 311. First guide surface;

[0040] 312. First avoidance surface;

[0041] 320. Electric heating element;

[0042] 330. Lower heat-conducting plate;

[0043] 331. Second guide surface;

[0044] 332. Second avoidance surface;

[0045] 340. Shaft;

[0046] 400. First heat exchanger;

[0047] 500. Second heat exchanger;

[0048] 600, Triangle area;

[0049] 700. Water tray;

[0050] 800, Drainage plate;

[0051] 120', air outlet;

[0052] 300′, heating belt. Detailed Implementation

[0053] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0054] It should be noted that the terms "comprising" and "having" and any variations thereof in the specification, claims and accompanying drawings of this application are intended to cover non-exclusive inclusion. For example, a system, product or device that includes a series of units is not necessarily limited to those units that are explicitly listed, but may include units that are not explicitly listed or that are inherent to such products or devices.

[0055] In this application, the terms "upper," "lower," "inner," "middle," and "outer," 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.

[0056] 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.

[0057] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0058] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0059] like Figure 3-6As shown in the figure, this application embodiment provides an indoor unit. The main structure of the indoor unit includes a casing 100, a fan 200, a V-shaped heat exchanger, and a flow-guiding heating assembly 300. An air duct 110 is formed inside the casing 100, with an air inlet and an air outlet formed on both sides of the air duct 110. The fan 200 is configured to introduce airflow from the air inlet into the air duct 110, and the air outlet of the fan 200 is connected to the air inlet of the air duct 110. The fan 200 is preferably a cross-flow fan 200 or a centrifugal fan 200, with stable output airflow and moderate air volume. The V-shaped heat exchanger includes a first heat exchanger 400 and a second heat exchanger 500 arranged vertically. The flow-guiding heating assembly 300 is disposed between the fan 200 and the V-shaped heat exchanger. The flow-guiding heating assembly 300 includes an upper heat-guiding plate 310, an electric heating element 320, and a lower heat-guiding plate 330 stacked in sequence. The upper heat-guiding plate 310 forms a first flow-guiding surface 311 on the side away from the electric heating element 320, and the lower heat-guiding plate 330 forms a second flow-guiding surface 331 on the side away from the electric heating element 320. Along the direction from the fan 200 to the V-shaped heat exchanger, the distance between the first flow-guiding surface 311 and the second flow-guiding surface 331 gradually increases so that the shape of the flow-guiding heating assembly 300 forms a wedge-shaped structure.

[0060] This indoor unit is particularly suitable for air conditioning systems with dehumidification or low-temperature heating modes, especially when operating in cold regions or high-humidity environments, effectively solving the problem of easy frost and ice buildup on the surface of the indoor heat exchanger.

[0061] The upper heat-conducting plate 310 and the lower heat-conducting plate 330 can be selected from various excellent thermal conductive materials as needed. For example, aluminum alloy plates are preferred, which have good thermal conductivity, are lightweight, and are easy to process. Thermal grease, thermal adhesive layers, and other materials can also be selected.

[0062] The electric heating element 320 can be a resistance wire array, for example, a nickel-chromium alloy resistance wire can be spirally wound or serpentinely arranged between the upper heat-conducting plate 310 and the lower heat-conducting plate 330; the electric heating element 320 can also be a heating element structure, for example, a ceramic heating element disposed between the upper heat-conducting plate 310 and the lower heat-conducting plate 330.

[0063] In low-temperature or dehumidification conditions, when the control system determines there is a risk of frosting / icing, it will activate the electric heating element 320. The working process is as follows: After the electric heating element 320 is powered on, it generates heat, which diffuses outward through the upper heat-conducting plate 310 and the lower heat-conducting plate 330; the airflow output from the fan 200 passes through the wedge-shaped flow-guiding heating component 300, and is heated after contacting the upper heat-conducting plate 310 and the lower heat-conducting plate 330, causing the temperature of the heated air to rise; the heated airflow further passes through the V-shaped heat exchanger, increasing the surface temperature of the heat exchanger and effectively preventing frosting / icing.

[0064] First, the wedge-shaped flow-guiding heating component 300 can physically divert airflow when it passes through. The main airflow that is originally concentrated near the angle area of ​​the V-shaped heat exchanger will be partially guided to the upper and lower sides of the V-shaped heat exchanger, which improves the heating uniformity of the pipes of the first heat exchanger 400 and the second heat exchanger 500 on the upper and lower sides. This can effectively alleviate the icing problem of the heat exchanger pipes in areas far from the flow-guiding heating component 300 and solve the problem of "heating dead zone".

[0065] Secondly, the wedge-shaped structure design formed by the upper heat-conducting plate 310 and the lower heat-conducting plate 330 can form a larger first flow guide surface 311 and a second flow guide surface 331, thereby increasing the contact area between the airflow and the flow guide heating component 300 and thus achieving the heating effect on the airflow.

[0066] In addition, heat is not only transferred to the heat exchanger through the heating effect of the airflow by the flow guiding heating component 300, but also indirectly preheated to the nearby heat exchanger area directly through the thermal radiation of the heat-conducting plate.

[0067] In some implementations, such as Figure 3 As shown, the flow guiding and heating assembly 300 also includes a horizontally arranged rotating shaft 340. The rotating shaft 340 is located at the end of the flow guiding and heating assembly 300 away from the fan 200, and the rotating shaft 340 is rotatably mounted on the housing 100. This embodiment introduces an adjustable mechanism—the rotating shaft 340—on the basis of the original flow guiding and heating assembly 300 structure, so that the flow guiding and heating assembly 300 is no longer a fixed structure, but has variable flow guiding capability, thereby realizing dynamic adjustment of airflow angle and air volume ratio, which is conducive to further improving airflow control capability and realizing more flexible airflow distribution control.

[0068] Optionally, the rotating shaft 340 extends horizontally through one end of the flow guiding heating assembly 300, which is located near the V-shaped heat exchanger. The two ends of the rotating shaft 340 are installed in corresponding positions on the housing 100 through structures such as bearings, brackets, or holes in the rotating shaft 340, so that the flow guiding heating assembly 300 can swing around the rotating shaft 340 or adjust its position.

[0069] Because the wedge-shaped structure of the flow-guiding heating component 300 can swing around the rotating shaft 340, the airflow distribution ratio can be adjusted. When the end of the flow-guiding heating component 300 facing the fan 200 is tilted upwards, the airflow blowing upwards to the first heat exchanger 400 is reduced, while the airflow blowing downwards to the second heat exchanger 500 is increased. When it is tilted downwards, more airflow is directed to the second heat exchanger 500. This structure allows for dynamic balancing of the operating states of the first heat exchanger 400 and the second heat exchanger 500 based on actual heat exchange load differences, improving the overall heat exchange efficiency of the system. Furthermore, the angle of the flow-guiding heating component 300 can be dynamically adjusted based on the frosting condition of the surfaces of the first heat exchanger 400 and the second heat exchanger 500, directing more airflow to the heat exchanger with higher defrosting requirements, thus improving the defrosting effect.

[0070] The driving methods of the rotating shaft 340 of the flow guiding heating component 300 include, but are not limited to: a manual adjustment mechanism, such as manual adjustment assisted by a lever, knob or other structure; and an electric adjustment mechanism, such as automatic angle control by a control system based on a temperature sensor, flow sensor or operating mode via a small stepper motor or servo motor.

[0071] In related technologies, such as Figure 1 and 2 As shown, the air outlet 120' is located at the end of the housing 100 away from the fan 200, and the air outlet 120' is located in the middle of the housing 100 in the vertical direction. The V-shaped heat exchanger includes a first heat exchanger 400 and a second heat exchanger 500 arranged vertically. The opening of the V-shaped heat exchanger is away from the air outlet 120'. The intersection of the first heat exchanger 400 and the second heat exchanger 500 is directly opposite the air outlet 120' and is very close to the air outlet 120'. In addition, the airflow speed in the middle area is significantly stronger than the airflow speed on the upper and lower sides. During the cooling or dehumidification process of the indoor unit, condensate generated on the heat exchanger will be blown out from the air outlet 120' by the airflow, affecting the user experience.

[0072] Based on this, in some implementations, such as Figure 4-6 As shown, the opening direction of the V-shaped heat exchanger is away from the fan 200, and the air outlet includes a first air outlet 120. The first air outlet 120 is disposed at the end of the housing 100 away from the fan 200, and the first air outlet 120 is located in the middle of the housing 100 in the vertical direction.

[0073] On the one hand, by adjusting the opening direction of the V-shaped heat exchanger, the V-shaped heat exchanger can be further away from the first air outlet 120, reducing the possibility of condensate being blown out directly from the first air outlet 120.

[0074] On the other hand, the upper end of the first heat exchanger 400 is offset from the first air outlet 120 in the height direction, thereby increasing the distance between it and the first air outlet 120. This allows the condensate carried out by the airflow at the upper end of the first heat exchanger 400 to have more space to diffuse and slow down before reaching the first air outlet 120, and further reduces the risk of the condensate being carried out by the wind.

[0075] On the other hand, the wedge-shaped flow-guiding heating component 300 can physically divert airflow as it passes through. The main airflow, which would normally concentrate near the angle of the V-shaped heat exchanger, is partially guided to the upper and lower sides of the V-shaped heat exchanger. This solves the "heating dead zone" problem and reduces the airflow velocity in the central area to some extent. This reduces the blowing force of the airflow directly facing the first air outlet 120 on the condensate, further reducing the risk of condensate being blown out directly. This improves the user experience and avoids discomfort, pollution, or safety hazards caused by condensate dripping or drifting out.

[0076] In some implementations, such as Figure 4-6 As shown, a triangular region 600 is formed between the end face of the first heat exchanger 400 near the fan 200 and the end face of the second heat exchanger 500 near the fan 200, and the end of the flow guiding heating component 300 away from the fan 200 is located within the triangular region 600.

[0077] Because the first heat exchanger 400 and the second heat exchanger 500 are arranged vertically in a V-shape, a triangular space, namely the triangular area 600, is naturally formed between their end faces near the fan 200 due to the arrangement angle. This triangular area 600 is located within the air duct 110, on the leeward side of the V-shaped heat exchanger, and is relatively concealed. In conventional structures, this area is either unused or has low utilization. This embodiment cleverly places the end of the flow-guiding heating component 300 away from the fan 200 within this triangular area 600, which can significantly reduce the installation space required in the horizontal direction and avoid the flow-guiding heating component 300 extending forward additionally. It is particularly suitable for applications with high requirements for compactness, such as miniaturized or wall-mounted air conditioners, and is conducive to the flattening and thinning design of the overall structure.

[0078] Although one end is located within the triangular area 600, the flow guiding and heating component 300 can still fully utilize its heat conduction and flow diversion functions. The front end of the flow guiding and heating component 300 (the end closest to the fan 200) is still located on the main airflow channel, and the wedge-shaped flow guiding surface it forms ensures that the airflow is diverted and guided into the upper and lower channels of the first heat exchanger 400 and the second heat exchanger 500 after contact; heat can still be effectively conducted to the airflow passing through the flow guiding and heating component 300, achieving the defrosting heating compensation effect for heat exchangers in more distant locations.

[0079] In some implementations, such as Figure 3As shown, the upper heat-conducting plate 310 forms a first clearance surface 312 on the side away from the electric heating element 320, and the lower heat-conducting plate 330 forms a second clearance surface 332 on the side away from the electric heating element 320. The first clearance surface 312 and the second clearance surface 332 are both located on the side of the flow-guiding heating assembly 300 away from the fan 200. Along the direction from the fan 200 to the V-shaped heat exchanger, the distance between the first clearance surface 312 and the second clearance surface 332 gradually decreases, so that the end of the flow-guiding heating assembly 300 away from the fan 200 presents a wedge-shaped convergent structure.

[0080] The rotating shaft 340 of the flow guiding heating assembly 300 is located at the end away from the fan 200, that is, the rotating shaft 340 must be located within the triangular area 600. During the rotation, the flow guiding heating assembly 300 may approach or come close to the first heat exchanger 400 and the second heat exchanger 500. By setting the first avoidance surface 312 and the second avoidance surface 332 and designing them as a gradually converging structure, it can be ensured that the flow guiding heating assembly 300 will not physically interfere or collide with the end face of the heat exchanger throughout the entire rotation range, thus reserving sufficient space for its free rotation or rotation adjustment.

[0081] In some implementations, such as Figure 4-6 As shown, a water receiving tray 700 and a flow guiding plate 800 are provided inside the housing 100. The water receiving tray 700 is located below the V-shaped heat exchanger, and the flow guiding plate 800 is disposed between the first air outlet 120 and the water receiving tray 700. The water receiving tray 700 is configured to receive the condensate falling from the air outlet side of the V-shaped heat exchanger and guide it into the water receiving tray 700.

[0082] The shape of the water collection tray 700 can be rectangular, trapezoidal, or arc-shaped according to the outline of the heat exchanger. Its lower part is provided with a drain outlet or drain pipe interface to guide the collected condensate to the drainage system. The water collection tray 700 is located in the lower region of the V-shaped heat exchanger and is used to directly collect the condensate dripping from the V-shaped heat exchanger. To further prevent condensate from being carried by the strong airflow and splashing onto the air outlet side of the V-shaped heat exchanger and scattering inside the casing 100, a guide plate 800 is disposed between the first air outlet 120 and the water collection tray 700, and is located in the lower region, to assist in collecting and guiding the condensate splashed out by the strong airflow.

[0083] Specifically, during the cooling or dehumidification mode of the air conditioner, condensation easily forms on the surface of the V-shaped heat exchanger due to temperature reduction. Some of the condensation will naturally drip down the pipe wall, where it can be directly collected and discharged by the drip tray 700. However, another portion of the condensation is passively carried away from the heat exchanger surface by the airflow, especially in the central area of ​​the outlet side where the airflow velocity is high. This condensation is easily carried to the outlet area of ​​the V-shaped heat exchanger. To prevent this condensation from splashing onto the first air outlet 120 and being discharged with the airflow, this embodiment provides a guide plate 800 in the lower area between the V-shaped heat exchanger and the first air outlet 120. This guide plate 800 can be arc-shaped or inclined, and its surface can be a smooth metal plate or a plastic material with a water-guiding coating. The diversion plate 800 is configured to receive the condensate that is passively splashed. The condensate falls onto the surface of the diversion plate 800 under the action of gravity and is guided by the diversion plate 800 to finally flow into the water receiving tray 700 located below.

[0084] Through the above structural design, a dual management mechanism for condensate is achieved: gravity dripping water from the V-shaped heat exchanger is directly collected through the water receiving pan 700, while the interception and guidance of splashing condensate is accomplished by the diversion plate 800, thereby effectively preventing condensate from flying out from the first air outlet 120 and ensuring the user experience.

[0085] In some implementations, such as Figure 4-6 As shown, the air outlet also includes a second air outlet 130, which is located at the end of the housing 100 away from the fan 200, and the second air outlet 130 is located at the bottom of the housing 100.

[0086] The first air outlet 120 and the second air outlet 130 are used for different operating modes. The first air outlet 120 is located on the front surface of the housing 100 and is mainly used for horizontal air supply in the cooling mode, sending cold air into the room in a horizontal direction to achieve a rapid cooling effect. The second air outlet 130 is located at the bottom of the housing 100 and is mainly used for vertical downward air supply in the heating mode. By sending hot air from the area below the air conditioner, it enhances the coverage and circulation of hot air at the bottom of the room, thereby improving the indoor temperature distribution and improving heating efficiency and comfort.

[0087] In practical applications, when the air conditioner is in heating mode, the control closes the first air outlet 120 and opens the second air outlet 130, thereby achieving a top-to-bottom hot air delivery path. This helps reduce the problem of heat accumulation in the upper part of the room and improves the uniformity of hot air distribution at the bottom of the room. In cooling or dehumidifying mode, the control closes the second air outlet 130 and opens the first air outlet 120. By opening the first air outlet 120, cold air is delivered, achieving a rapid cooling effect and enhancing the perceived cooling effect, while avoiding discomfort caused by cold air blowing directly on the body.

[0088] Through the structural arrangement and functional coordination of the first air outlet 120 and the second air outlet 130, the air supply direction and position can be switched according to different operating modes, so that the air conditioner has both good cooling and heating comfort, and can adapt to various indoor environments and usage needs, further improving the energy efficiency of the whole unit and the user experience.

[0089] In some embodiments, the drain plate 800 is rotatably connected to the housing 100, and the drain plate 800 has a first position and a second position during rotation; for example... Figure 5 As shown, in the first position, the diversion plate 800 closes the second air outlet 130 and opens the first air outlet 120. One end of the diversion plate 800 overlaps the water receiving tray 700, and the height of the diversion plate 800 gradually decreases along the direction that gradually approaches the water receiving tray 700; as... Figure 6 As shown, in the second position, the deflector plate 800 closes the first air outlet 120 and opens the second air outlet 130.

[0090] In the first position, the second air outlet 130 is closed while the first air outlet 120 is opened. This state is suitable for cooling or dehumidification modes. One end of the deflector plate 800 overlaps the drip tray 700, and the deflector plate 800 has a slope structure that gradually decreases from the end away from the drip tray 700 towards the drip tray 700, forming an effective condensate drainage surface. Condensate dripping from the V-shaped heat exchanger or splashing onto the air outlet side by strong airflow falls onto the deflector plate 800 under gravity, slides along the deflector plate 800, and is eventually guided into the drip tray 700, effectively preventing condensate from flying out of the second air outlet 130, improving the user experience and protecting furniture and floors from damage.

[0091] In the second position, the deflector plate 800 closes the first air outlet 120 and opens the second air outlet 130. This state is suitable for heating mode, realizing a top-down warm air delivery path. At this time, the deflector plate 800 rotates to disengage from the water receiving tray 700 and blocks the first air outlet 120, thereby preventing hot air short-circuiting or backflow, improving heating efficiency and hot air coverage.

[0092] To achieve the above structure, the air intake plate 800 is preferably made of lightweight, corrosion-resistant material and can be rotatably connected to the housing 100 via a rotating shaft 340, hinge, or electric rotating shaft 340. The control method may include mechanical linkage, electric actuator, or automatic drive by a controller. If necessary, a sealing structure (such as a sealing strip) can be provided between the air intake plate 800 and the corresponding air outlet to ensure the airflow sealing after switching and to prevent condensate leakage.

[0093] By designing the 800 air intake plate as a rotatable structure with dual functions, it can not only play a role in guiding and collecting condensate, but also dynamically adjust the air outlet path in different operating modes, realizing multiple uses of one plate, improving the compactness of the indoor unit structure and its multi-mode adaptability, which is conducive to reducing product size and simplifying construction.

[0094] In some embodiments, the indoor unit has, for example... Figure 6 The heating mode shown is as follows: both the first heat exchanger 400 and the second heat exchanger 500 are in heating mode, the heating element of the flow guiding heating assembly 300 is in working mode, and the flow guiding plate 800 is located in the second position.

[0095] The airflow guiding heating component 300 can distribute airflow to the first heat exchanger 400 and the second heat exchanger 500 according to demand. For example, the airflow guiding heating component 300 can distribute airflow evenly to the first heat exchanger 400 and the second heat exchanger 500 at a symmetrical airflow angle, or it can distribute airflow to the first heat exchanger 400 and the second heat exchanger 500 at a 3:1 ratio by changing the airflow angle. Both the first heat exchanger 400 and the second heat exchanger 500 operate in heating mode to increase the airflow temperature and achieve the heating function of the indoor space. By turning on the heating element of the airflow guiding heating component 300, the airflow can be preheated, which, together with the subsequent V-shaped heat exchanger, enhances the heating effect of the airflow. Combined with the downward airflow design, the indoor temperature can be quickly increased in a short time, and the heating effect can be ensured to cover the entire space. It is suitable for environments that require rapid heating in winter, such as homes, offices, shops, and other indoor spaces.

[0096] In some embodiments, the indoor unit has, for example... Figure 5 The cooling mode shown is as follows: in the cooling mode, the heating element of the flow guiding heating component 300 is in a non-working state, and the flow guiding plate 800 is located in the first position.

[0097] Specifically, when the indoor unit is operating in cooling mode: both the first heat exchanger 400 and the second heat exchanger 500 are in cooling mode, and the airflow guiding heating component 300 can distribute airflow evenly to the first heat exchanger 400 and the second heat exchanger 500 at symmetrical airflow angles. The first heat exchanger 400 and the second heat exchanger 500 are both operating in cooling mode to reduce the airflow temperature and achieve overall cooling. Distributing airflow to the first heat exchanger 400 and the second heat exchanger 500 at symmetrical airflow angles, meaning that the airflow distributed to both is basically equal, ensures consistent heat exchange efficiency and improves the overall cooling effect. Through the symmetrical operating mode of the dual heat exchangers and the uniform airflow design, the ambient temperature can be quickly reduced, and the indoor unit can be ensured to operate stably and efficiently in cooling mode. When the ambient temperature is high, the symmetrical cooling mode of the indoor unit can significantly improve heat exchange efficiency and indoor temperature control.

[0098] In some implementations, the indoor unit has a dehumidification mode, which can be further divided into a summer dehumidification mode and a winter dehumidification mode.

[0099] In summer dehumidification mode, both the first heat exchanger 400 and the second heat exchanger 500 operate in cooling mode, the heating element of the flow-guiding heating assembly 300 is inactive, and the flow-guiding plate 800 is located in the first position. The flow-guiding heating assembly 300 can distribute airflow evenly to the first heat exchanger 400 and the second heat exchanger 500 at symmetrical airflow angles. Both the first heat exchanger 400 and the second heat exchanger 500 operate in cooling mode, responsible for reducing the airflow temperature, thereby effectively dehumidifying. Condensate dripping from the V-shaped heat exchanger or splashing onto the outlet side by strong airflow falls onto the flow-guiding plate 800 under gravity, slides along the flow-guiding plate 800, and is ultimately guided into the water collection tray 700, effectively preventing condensate from flying out of the second air outlet 130.

[0100] In winter dehumidification mode, one of the first heat exchanger 400 and the second heat exchanger 500 operates in cooling mode, while the other operates in heating mode; the air guide plate 800 is located in the first position. One of the first heat exchangers 400 and the second heat exchanger 500 operates in cooling mode, responsible for reducing the airflow temperature, thereby effectively dehumidifying; the other heat exchanger operates in heating mode, responsible for heating the airflow to ensure the air is not too cold and to avoid excessively low indoor temperatures. The airflow distribution between the two heat exchangers can be adjusted by the angle of the air guide heating component 300 according to the needs of dehumidification and indoor temperature control. Preferably, adjusting the angle of the air guide heating component 300 allows more airflow to be distributed to the heat exchanger in cooling mode to improve the dehumidification effect. To prevent excessively low indoor temperatures, the heating element of the air guide heating component 300 can be turned on to preheat the airflow, thereby working with the heat exchanger in heating mode to increase the outlet air temperature and compensate for the problem of low room temperature caused by more airflow passing through the heat exchanger in cooling mode.

[0101] Preferably, in winter dehumidification mode, the upper first heat exchanger 400 operates in heating mode, and the lower second heat exchanger 500 operates in cooling mode. This configuration allows dehumidification to be performed through the lower second heat exchanger 500, with condensate dripping directly onto the drip tray 700 or being blown onto the deflector plate 800. The condensate will not collide with or interfere with the airflow at the outlet of the upper first heat exchanger 400, thus preventing an increase in outlet humidity. However, if the upper first heat exchanger 400 is controlled to operate in cooling mode and the lower second heat exchanger 500 in heating mode, the condensate produced by the first heat exchanger 400 will inevitably contaminate the lower second heat exchanger 500 and the lower dehumidification airflow, leading to a decrease in dehumidification efficiency.

[0102] This application also protects air conditioners that include the above-described indoor unit.

[0103] Some embodiments in this specification are described in a progressive or parallel manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0104] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. An indoor unit, characterized in that, include: The casing has an air duct inside, and air inlets and air outlets are formed on both sides of the air duct. A fan is configured to introduce airflow from the air inlet into the air duct, and the air outlet of the fan is connected to the air inlet of the air duct. A V-shaped heat exchanger includes a first heat exchanger and a second heat exchanger arranged vertically. A flow-guiding heating assembly is disposed between the fan and the V-shaped heat exchanger. The flow-guiding heating assembly includes an upper heat-guiding plate, an electric heating element, and a lower heat-guiding plate stacked in sequence. The side of the upper heat-guiding plate opposite to the electric heating element forms a first flow-guiding surface, and the side of the lower heat-guiding plate opposite to the electric heating element forms a second flow-guiding surface. Along the direction from the fan to the V-shaped heat exchanger, the distance between the first flow-guiding surface and the second flow-guiding surface gradually increases so that the shape of the flow-guiding heating assembly forms a wedge-shaped structure.

2. The indoor unit according to claim 1, characterized in that, The flow guiding heating assembly also includes a horizontally arranged rotating shaft, which is located at the end of the flow guiding heating assembly away from the fan, and is rotatably mounted on the housing.

3. The indoor unit according to claim 1, characterized in that, The opening direction of the V-shaped heat exchanger is away from the fan, and the air outlet includes a first air outlet, which is located at the end of the casing away from the fan, and the first air outlet is located in the middle of the casing in the vertical direction.

4. The indoor unit according to claim 3, characterized in that, A triangular region is formed between the end face of the first heat exchanger near the fan and the end face of the second heat exchanger near the fan, and the end of the flow guiding heating component away from the fan is located within the triangular region.

5. The indoor unit according to claim 4, characterized in that, The upper heat-conducting plate forms a first clearance surface on the side away from the electric heating element, and the lower heat-conducting plate forms a second clearance surface on the side away from the electric heating element. Both the first clearance surface and the second clearance surface are located on the side of the flow-guiding heating assembly away from the fan. Along the direction from the fan to the V-shaped heat exchanger, the distance between the first clearance surface and the second clearance surface gradually decreases.

6. The indoor unit according to claim 3, characterized in that, The casing is provided with a water receiving tray and a diversion plate. The water receiving tray is located below the V-shaped heat exchanger, and the diversion plate is located between the first air outlet and the water receiving tray. The water receiving tray is configured to receive the condensate falling from the air outlet side of the V-shaped heat exchanger and divert it into the water receiving tray.

7. The indoor unit according to claim 6, characterized in that, The air outlet includes a second air outlet, which is located at the end of the housing away from the fan, and the second air outlet is located at the bottom of the housing.

8. The indoor unit according to claim 7, characterized in that, The diversion plate is rotatably connected to the housing, and the diversion plate has a first position and a second position during rotation; In the first position, the diversion plate closes the second air outlet and opens the first air outlet. One end of the diversion plate is attached to the water receiving tray, and the height of the diversion plate gradually decreases along the direction that gradually approaches the water receiving tray. In the second position, the deflector plate closes the first air outlet and opens the second air outlet.

9. The indoor unit according to claim 8, characterized in that, The indoor unit has a cooling mode, in which the heating element of the airflow heating assembly is in a non-working state, and the airflow plate is located at the first position.

10. The indoor unit according to claim 8, characterized in that, The indoor unit has a heating mode, in which the heating element of the flow-guiding heating assembly is in working condition, and the flow-guiding plate is located in the second position.

11. An air conditioner, characterized in that, Including the indoor unit as described in any one of claims 1-10.

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