Air conditioner indoor unit and air conditioner with same

Abstract

The application provides an air conditioner indoor unit and an air conditioner with the same, the air conditioner indoor unit comprises an air duct assembly, a first cross-flow fan and a flow splitting assembly, the air duct assembly comprises a front vortex tongue and a rear vortex tongue, and an air outlet air duct is defined between the front vortex tongue and the rear vortex tongue; the flow splitting assembly comprises a flow splitter and a second cross-flow fan, and the flow splitter is arranged at a downstream outlet of the air outlet air duct; the flow splitter has a first windward surface corresponding to the front vortex tongue and a second windward surface corresponding to the rear vortex tongue, a first air duct is formed between the first windward surface and the front vortex tongue, and a second air duct is formed between the second windward surface and the rear vortex tongue; the flow splitter is provided with a flow guide channel, an air inlet of the flow guide channel penetrates through the first windward surface, and an air outlet of the flow guide channel penetrates through a leeward surface of the flow splitter; and the second cross-flow fan is arranged at the air outlet. The air conditioner indoor unit provided by the application has relatively uniform air volume of air supply, and can make the temperature difference in the room smaller.

Description

Technical Field

[0001] This invention relates to the technical field of air conditioners, and in particular to an indoor air conditioner unit and an air conditioner having the same. Background Technology

[0002] With technological advancements, users' demands for indoor air quality and environmental comfort are increasing, leading to the emergence of numerous air handling devices. In related technologies, the volute casing of the air conditioner forms the air outlet duct, with a splitting structure at the outlet end to create two air outlets. This allows the air conditioner to direct airflow in two different directions within the room, expanding its airflow range, and the use of only a single cross-flow fan reduces manufacturing costs. However, the airflow generated by the cross-flow fan in these air conditioners tends to be biased towards the front volute, resulting in a higher airflow volume at the outlet closer to the volute than at the outlet further away. This uneven airflow in both directions causes significant temperature differences within the room, resulting in a less than ideal user experience. Summary of the Invention

[0003] In view of the above problems, the present invention is proposed to provide an indoor air conditioning unit and an air conditioner having the above problems in order to overcome or at least partially solve the above problems, and to solve the problem of uneven air volume delivered by the air conditioner, resulting in large differences in indoor temperature.

[0004] Specifically, the present invention provides an indoor unit for an air conditioner.

[0005] The indoor unit of the air conditioner of the present invention includes an air duct assembly, the air duct assembly including a front vortex and a rear vortex, the front vortex and the rear vortex defining an air outlet duct; a first cross-flow fan, the first cross-flow fan being disposed upstream of the air outlet duct; a flow splitting assembly, the flow splitting assembly including a flow splitter and a second cross-flow fan, the flow splitter being disposed at the downstream outlet of the air outlet duct; the flow splitter having a first windward surface corresponding to the front vortex and a second windward surface corresponding to the rear vortex, the first windward surface and the front vortex forming a first air duct, the second windward surface and the rear vortex forming a second air duct; the flow splitter having a guide channel, the air inlet of the guide channel penetrating the first windward surface, the air outlet of the guide channel penetrating the leeward surface of the flow splitter; the second cross-flow fan being disposed at the air outlet to promote the formation of an airflow that enters the guide channel from the air inlet and is obliquely blown out from the air outlet toward the second air duct.

[0006] In some embodiments, the first air duct includes a first section and a second section in its air outlet direction, the second section is located downstream of the first section, and the first section and the second section are smoothly connected, and the air inlet is provided on the first section;

[0007] In a cross-section perpendicular to the rotation axis of the second cross-flow fan, the width of the first segment increases in the air outlet direction, and the width of the second segment decreases in the air outlet direction.

[0008] In some embodiments, in a cross-section perpendicular to the rotation axis of the second cross-flow fan, the minimum width dimension of the first segment is greater than the minimum width dimension of the second segment.

[0009] In some embodiments, in a cross-section perpendicular to the rotation axis of the second cross-flow fan, the width of the second air duct first decreases and then increases in its air outlet direction; and / or, the width of the inlet end of the second air duct is smaller than the width of the inlet end of the first air duct.

[0010] In some embodiments, the flow divider defines a chamber, and the first windward surface of the flow divider is provided with a plurality of first through holes communicating with the chamber, the first through holes forming the air inlet, and the plurality of first through holes being spaced apart in the extending direction of the second cross-flow fan; the leeward surface of the flow divider is provided with at least one second through hole communicating with the chamber, the second through hole forming the air outlet; the first through hole, the chamber, and the second through hole form the flow guiding channel.

[0011] In some embodiments, the second cross-flow fan is disposed at the second through hole and is located within the cavity.

[0012] In some embodiments, the second through hole includes a spaced-apart first sidewall and second sidewall, and the second cross-flow fan is located between the first sidewall and the second sidewall;

[0013] The first sidewall includes a first end and a second end, the first end being closer to the first through hole relative to the second end, and the first end being farther away from the second air duct relative to the second end; the second sidewall includes a third end and a fourth end, the third end being closer to the first through hole relative to the fourth end, and the third end being farther away from the second air duct relative to the fourth end.

[0014] In some embodiments, the distance between the second cross-flow fan and the first sidewall is greater than the distance between the second cross-flow fan and the second sidewall.

[0015] In some embodiments, on a cross-section perpendicular to the rotation axis of the second cross-flow fan, the included angle between the first windward surface and the second windward surface is 45°-60°.

[0016] The air conditioner of the present invention includes the indoor unit of any of the above-described air conditioners.

[0017] In this embodiment of the air conditioner indoor unit, a flow divider located at the downstream outlet of the air outlet duct has a guide channel connecting to the first air outlet duct. When airflow passes through the first and second air outlet ducts, a second cross-flow fan can cause a portion of the airflow in the first air outlet duct to enter the guide channel. When this portion of airflow is blown out from the leeward side of the flow divider, it is tilted towards one side of the second air outlet duct, thereby increasing the amount of airflow blown into the room from the second air outlet duct side. This makes the airflow from the first and second air outlet ducts more uniform.

[0018] Furthermore, the air outlet of the guide channel is located on the leeward side. In other words, the air outlet of the guide channel is not located inside the second air duct. This prevents the airflow blown out from the air outlet of the guide channel from entering the second air duct. Instead, the airflow is blown out at an angle towards one side of the second air duct before merging with the second airflow blown out from the second air duct and entering the room from one side of the second air duct. This prevents the pressure inside the second air duct from increasing and avoids energy loss of the airflow inside the second air duct. As a result, the air delivery distance on one side of the second air duct can be made longer.

[0019] The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments of the invention in conjunction with the accompanying drawings. Attached Figure Description

[0020] The following sections will describe some specific embodiments of the invention in detail by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or portions. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0021] Figure 1 This is a cross-sectional view of an indoor air conditioner according to an embodiment of the present invention;

[0022] Figure 2 This is a partial cross-sectional view of an indoor air conditioner according to an embodiment of the present invention;

[0023] Figure 3 This is a partial cross-sectional view of an indoor air conditioner according to an embodiment of the present invention;

[0024] Figure 4 yes Figure 2 A magnified view of a portion of point A in the middle;

[0025] Figure 5 This is a partial cross-sectional view of an indoor air conditioner according to an embodiment of the present invention;

[0026] Figure 6 This is a partial cross-sectional view of an indoor air conditioner according to an embodiment of the present invention.

[0027] Figure label:

[0028] Air duct assembly 100; front vortex 110; first downstream section 111; rear vortex 120; second downstream section 121; air outlet duct 130; first air duct 140; first section 141; second section 142; second air duct 150; flow splitter assembly 200; flow splitter 210; first windward surface 211; second windward surface 212; leeward surface 213; guide channel 214; chamber 220; first through hole 230; second through hole 240; first side wall 241; first end 242; second end 243; second side wall 244; third end 245; fourth end 246; second cross-flow fan 220; housing 300; first opening 310; second opening 320; heat exchanger 400; first cross-flow fan 500; first air guide plate 610; second air guide plate 620. Detailed Implementation

[0029] The following reference Figures 1 to 6 This invention describes an indoor air conditioning unit and an air conditioner having the same, according to embodiments of the present invention. In this description, it should be understood that 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 indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature, that is, include one or more of that feature. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it encompasses, unless otherwise specifically described, this indicates that other features are not excluded and may be further included.

[0030] Unless otherwise expressly specified and limited, the terms "set up," "install," "connect," "link," "fix," and "couple" 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, unless otherwise expressly limited. Those skilled in the art should be able to understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0031] Furthermore, in the description of this embodiment, "above" or "below" the second feature can include direct contact between the first and second features, or it can include contact between the first and second features through another feature between them. That is, in the description of this embodiment, "above," "over," and "on top" of the second feature includes the first feature being 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," or "below" of the second feature can mean the first feature is 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.

[0032] In the description of this embodiment, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present 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.

[0033] The indoor unit of an air conditioner according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0034] like Figures 1-5 As shown, the indoor unit of the air conditioner in this embodiment of the invention includes a duct assembly 100, a first cross-flow fan 500, and a flow splitter assembly 200.

[0035] The air duct assembly 100 includes a front vortex 110 and a rear vortex 120, and an air outlet duct 130 is defined between the front vortex 110 and the rear vortex 120.

[0036] The first cross-flow fan 500 is located upstream of the air outlet duct 130. The rotation of the first cross-flow fan 500 can cause indoor air to enter the air outlet duct 130, pass through the upstream and downstream of the air outlet duct 130 in sequence, and finally blow the air into the room.

[0037] The airflow splitter assembly 200 includes a splitter 210 and a second cross-flow fan 220. The splitter 210 is located at the downstream outlet of the air outlet duct 130. The splitter 210 has a first windward surface 211 corresponding to the front vortex 110 and a second windward surface 212 corresponding to the rear vortex 120. That is, the first windward surface 211 is the windward portion of the splitter 210 facing the front vortex 110, and the second windward surface 212 is the windward portion of the splitter 210 facing the rear vortex 120. A first airflow duct 140 is formed between the first windward surface 211 and the first downstream portion 111 of the front vortex 110, and a second airflow duct 150 is formed between the second windward surface 212 and the second downstream portion 121 of the rear vortex 120. In other words, the downstream outlet is divided into a first air duct 140 and a second air duct 150 by the diverter 210. When the airflow passes through the downstream outlet, it is diverted by the diverter 210 and enters the first air duct 140 and the second air duct 150 respectively. The diverted airflow is then blown into the room through the first air duct 140 and the second air duct 150 respectively.

[0038] The flow divider 210 is provided with a guide channel 214. The air inlet of the guide channel 214 penetrates the first windward surface 211, and the air outlet of the guide channel 214 penetrates the leeward surface 213 of the flow divider 210, allowing the airflow of the second air duct 150 to enter the guide channel 214 through the air inlet. The second cross-flow fan 220 is located at the air outlet to promote the formation of airflow that enters the guide channel 214 from the air inlet and is blown out at an angle towards the second air duct 150 from the air outlet. That is, the rotation of the second cross-flow fan 220 can create a negative pressure in the guide channel 214, drawing a portion of the airflow in the second air duct 150 into the guide channel 214. The rotation of the second cross-flow fan 220 causes the air from the guide channel 214 to be blown out in a direction close to the second air duct 150.

[0039] like Figure 3 As shown, during operation of the indoor unit of the air conditioner in this embodiment, the first cross-flow fan 500 rotates, drawing indoor air into the air outlet duct 130, forming an airflow flowing upstream to downstream of the air outlet duct 130. When the airflow reaches the diverter 210, it is divided into a first airflow and a second airflow. The first airflow flows into the first air duct 140, and the second airflow flows into the first air duct 140. Specifically, when the first airflow passes through the air inlet located on the first windward surface 211, a portion of the first airflow is drawn into the guide channel 214 due to the negative pressure created by the second cross-flow fan 220. The rotation of the second cross-flow fan 220 then causes this portion of the first airflow in the guide channel 214 to tilt and be blown out towards one side of the second air duct 150, merging with the second airflow blown out from the second air duct 150 and entering the room from one side of the second air duct 150. The other portion of the first airflow is blown into the room from the second air duct 150.

[0040] Compared with related technologies, the air conditioner indoor unit of this embodiment has a flow divider 210 located at the downstream outlet of the air outlet duct 130, which has a guide channel 214 connecting to the first air duct 140. When airflow flows through the first air duct 140 and the second air duct 150, the second cross-flow fan 220 can cause a portion of the airflow in the first air duct 140 to enter the guide channel 214. When this portion of airflow is blown out from the leeward side 213 of the flow divider 210, it is tilted towards one side of the second air duct 150, thereby increasing the amount of airflow blown into the room from the side of the second air duct 150. Therefore, the airflow volume of the air conditioner indoor unit along the first air duct 140 and the airflow volume along the first air duct 140 are more uniform.

[0041] Furthermore, the air outlet of the guide channel 214 is located on the leeward side 213. In other words, the air outlet of the guide channel 214 is not located inside the second air duct 150. This prevents the airflow blown out from the air outlet of the guide channel 214 from entering the second air duct 150. Instead, the airflow is blown out at an angle towards one side of the second air duct 150 and then blown into the room from one side of the second air duct 150 together with the second airflow blown out from the second air duct 150. This prevents the pressure inside the second air duct 150 from increasing and avoids energy loss of the airflow inside the second air duct 150. Therefore, the air delivery distance on one side of the second air duct 150 can be made longer.

[0042] like Figures 1-5 As shown, the indoor unit of the air conditioner in this embodiment of the invention includes a housing 300, a heat exchanger 400, an air duct assembly 100, a first cross-flow fan 500, and a flow distribution assembly 200.

[0043] The heat exchanger 400, the air duct assembly 100, the first cross-flow fan 500, and the flow splitter assembly 200 are all disposed within the housing 300. The housing 300 has a first opening 310 and a second opening 320. The first downstream portion 111 of the front volute 110 and the first downstream portion 111 of the rear volute 120 are both connected to the second opening 320. The first cross-flow fan 500 is disposed upstream of the air outlet duct 130 formed between the front volute 110 and the rear volute 120. The heat exchanger 400 is disposed between the first opening 310 and the first cross-flow fan 500.

[0044] When the air conditioner in this embodiment is running, the first cross-flow fan 500 rotates, causing the indoor airflow to enter the housing 300 through the first opening 310 and exchange heat with the heat exchanger 400. The airflow after heat exchange enters the air outlet duct 130, passes through the splitter 210, then passes through the first air duct 140 and the second channel, and is blown into the room through the second opening 320.

[0045] In some embodiments, such as Figure 3As shown, the first air duct 140 includes a first section 141 and a second section 142 in its air outlet direction. The second section 142 is located downstream of the first section 141, and the first section 141 and the second section 142 are smoothly connected. The air inlet is located on the first section 141. In a cross-section perpendicular to the rotation axis of the second cross-flow fan 220, the width of the first section 141 increases in the air outlet direction, and the width of the second section 142 decreases in the air outlet direction.

[0046] In other words, the cross-sectional structure of the first air duct 140 first expands and then decreases in its air outlet direction. The width of the first segment 141 can refer to its dimension in the aforementioned cross-section, in the direction perpendicular to the rotation axis of the second cross-flow fan 220 and its air outlet direction; the width of the second segment 142 can refer to its dimension in the aforementioned cross-section, in the direction perpendicular to the rotation axis of the second cross-flow fan 220 and its air outlet direction.

[0047] The size of the second section 142 gradually decreases, causing the airflow to accumulate within the first section 141, resulting in a higher static pressure within the first section 141. The air inlet is located on the first section 141, making it easier for the airflow within the first air duct 140 to enter the guide channel 214. This increases the airflow rate of the airflow tilted out of the guide channel 214 towards the second air duct 150, further increasing the overall airflow volume on one side of the second air duct 150. This makes the airflow volume of the indoor unit of the air conditioner along the first air duct 140 more uniform.

[0048] Furthermore, the size of the first section 141 gradually increases, which converts the dynamic pressure of the airflow flowing into the first section 141 into static pressure, reducing the energy loss when a portion of the airflow in the first section 141 collides with the wall of the guide channel 214, thereby reducing wind loss.

[0049] For example Figure 5 As shown, the width of the inlet end of the first segment 141 is D1, the width of the outlet end of the first segment 141 and the width of the inlet end of the second segment 142 are both D2, and the width of the outlet end of the second segment 142 is D3. Both D1 and D3 are smaller than D2.

[0050] Furthermore, such as Figure 6 As shown, in a cross-section perpendicular to the rotation axis of the second cross-flow fan 220, the width of the second air duct 150 first decreases and then increases in its air outlet direction. In other words, the cross-sectional structure of the second air duct 150 is initially small and then expands in its air outlet direction. The width of the second air duct 150 can refer to its dimension in the aforementioned cross-section in the direction perpendicular to both the rotation axis of the second cross-flow fan 220 and its air outlet direction.

[0051] For example Figure 6 As shown, the width of the inlet end of the second air duct 150 is L1, the width of the outlet end of the second air duct 150 is L3, and the width of a certain portion of the second air duct 150 located between its outlet end and inlet end is D2. Both L1 and L3 are greater than L2.

[0052] When the airflow into the first air duct 140 is relatively large, the width of the second section 142 is reduced, making it difficult for the airflow to pass through the second section 142 and forming fluid accumulation. This increases the static pressure in the second air duct 150, making it easier for the airflow flowing downstream in the outlet air duct 130 to enter the second air duct 150, thus allowing more airflow to flow into the second air duct 150.

[0053] When the airflow into the second air duct 150 is large, the width of the upper part of the second air duct 150 decreases in its outlet direction, making it difficult for the airflow to pass through the upper part of the second air duct 150 and form fluid accumulation. This increases the static pressure in this section of the second air duct 150, making it easier for the airflow flowing downstream in the outlet air duct 130 to enter the first air duct 140, thus allowing more airflow to flow into the first air duct 140.

[0054] In other words, by utilizing the structure of the first air duct 140, whose width first expands and then narrows in its air outlet direction, and the structure of the second air duct 150, whose width first narrows and then expands in its air outlet direction, the inflow of air into the air duct with the larger static pressure in the first air duct 140 and the second air duct 150 is reduced. This avoids the loss of airflow energy caused by excessive airflow entering the first air duct 140 or the second air duct 150. Therefore, it not only achieves the goal of making the airflow along the first air duct 140 more uniform, but also reduces the energy loss of the airflow, thus increasing the air delivery distance of the indoor unit of the air conditioner in this embodiment of the invention.

[0055] Furthermore, such as Figure 5 As shown, in a cross-section perpendicular to the rotation axis of the second cross-flow fan 220, the minimum width dimension of the first segment 141 is greater than the minimum width dimension of the second segment 142. That is, D1 is greater than D3.

[0056] The outlet end of the second section 142 is located in the atmospheric environment. Since the width of the second section 142 gradually decreases and the minimum width of the first section 141 is greater than the minimum width of the second section 142, the pressure drop at the outlet end of the second section 142 is larger, which makes it difficult for air to pass through the first air duct 140. Therefore, the air flow rate into the first air duct 140 is increased, which makes the air volume of the first air duct 140 and the second air duct 150 more uniform.

[0057] In some embodiments, the width of the inlet end of the second air duct 150 is smaller than the width of the inlet end of the first air duct 140. For example, 5 and Figure 6 As shown, D3 is greater than L3. This avoids the second air duct 150 being too large, which would generate excessive noise when airflow enters the second air duct 150. Furthermore, since a portion of the airflow in the first air duct 140 will be blown towards the second air duct 150 through the guide channel 214, when the size of the second air duct 150 is smaller, the airflow volume of the airflow blown out along the outlet direction of the second air duct 150 remains uniform with the airflow volume of the airflow blown out along the outlet direction of the first air duct 140.

[0058] In some embodiments, such as Figure 4 As shown, the flow divider 210 defines a chamber 220. The first windward side 211 of the flow divider 210 has multiple first through holes 230 connecting to the chamber 220, forming air inlets. These first through holes 230 are spaced apart along the extension direction of the second cross-flow fan 220. The leeward side 213 of the flow divider 210 has at least one second through hole 240 connecting to the chamber 220, forming an air outlet. The first through holes 230, the chamber 220, and the second through hole 240 form a guide channel 214. That is, when the airflow in the first air duct 140 flows into the flow divider 210, the airflow passes sequentially through the multiple first through holes 230, the chamber 220, and the second through hole 240 before being blown into the room.

[0059] Multiple first through holes 230 are sequentially spaced along the extension direction of the rotation axis of the second cross-flow airflow on the first windward surface 211. This ensures that the airflow in the first air duct 140 can enter the chamber 220 evenly and in large quantities, increasing the airflow volume towards the second air duct 150. Furthermore, it allows the remaining area of ​​the first windward surface 211 with the multiple first through holes 230 to function properly as a guide for the airflow, minimizing airflow resistance and reducing energy loss.

[0060] In some alternative embodiments, the second through hole 240 may be an elongated hole extending in the direction of the rotation axis of the second cross-flow air; or, there may be multiple second through holes 240, which are spaced apart on the leeward side 213 of the diverter 210 in the direction of the rotation axis of the second cross-flow air.

[0061] In some embodiments, such as Figures 1-3As shown, the second cross-flow fan 220 is disposed at the second through hole 240 and is located inside the chamber 220. The leeward side 213 of the air diverter 210 is the exterior surface of the air conditioner indoor unit of this embodiment. The second cross-flow fan 220 is disposed inside the chamber 220, which not only enables the second cross-flow fan 220 to cause the airflow in the chamber 220 to blow out in the direction of the second air duct 150, but also can cover the second cross-flow fan 220 in appearance, making the appearance of the air conditioner indoor unit more beautiful, thereby improving the user experience.

[0062] In some embodiments, such as Figure 4 As shown, the second through hole 240 includes a first sidewall 241 and a second sidewall 244 spaced apart, and the second cross-flow fan 220 is located between the first sidewall 241 and the second sidewall 244.

[0063] The first sidewall 241 includes a first end 242 and a second end 243. The first end 242 is closer to the first through hole 230 relative to the second end 243, and the first end 242 is farther away from the second air duct 150 relative to the second end 243. The second sidewall 244 includes a third end 245 and a fourth end 246. The third end 245 is closer to the first through hole 230 relative to the fourth end 246, and the third end 245 is farther away from the second air duct 150 relative to the fourth end 246. That is, the side of the first sidewall 241 and the second sidewall 244 adjacent to the second through hole 240 is inclined towards the side closer to the second air duct 150. Thus, through the cooperation of the first sidewall 241, the second sidewall 244, and the second cross-flow fan 220, the airflow in the intake chamber 220 can be more smoothly and is blown out of the chamber 220 at an angle towards the second air duct 150.

[0064] Optionally, both the first sidewall 241 and the second sidewall 244 are curved surfaces recessed into the first air duct 140. This allows the first sidewall 241 and the second sidewall 244 to conform to the outer contour of the second cross-flow fan 220, reducing energy loss when airflow passes through the gap between the first sidewall 241 and the second sidewall 244 and the second cross-flow fan 220.

[0065] In some embodiments, such as Figure 4 As shown, the distance between the second cross-flow fan 220 and the first sidewall 241 is greater than the distance between the second cross-flow fan 220 and the second sidewall 244. That is, the second cross-flow fan 220 is closer to the second sidewall 244 than the first sidewall 241, thereby increasing the distance between the second cross-flow fan 220 and the first sidewall 241, so that more airflow can be blown out of the chamber 220 more smoothly and at an angle towards the second air duct 150.

[0066] In some embodiments, such as Figure 6As shown, a rotatable first air guide plate 610 is provided inside the first air duct 140. By swinging the first air guide plate 610, the tilt direction of the air guide plate is changed, and the air outlet direction of the first air duct 140 is adjusted. A rotatable second air guide plate 620 is provided inside the first air duct 140. By swinging the second air guide plate 620, the tilt direction of the air guide plate is changed, and the air outlet direction of the second air duct 150 is adjusted.

[0067] Optionally, in a cross-section perpendicular to the rotation axis of the splitter 210 and the second cross-flow fan 220, the included angle between the first windward surface 211 and the second windward surface 212 is 45°-60°. Optionally, in a cross-section perpendicular to the rotation axis of the splitter 210 and the second cross-flow fan 220, the included angle between the first windward surface 211 and the second windward surface 212 is 47°-56°. Optionally, in a cross-section perpendicular to the rotation axis of the splitter 210 and the second cross-flow fan 220, the included angle between the first windward surface 211 and the second windward surface 212 is 50°-54°. On the one hand, it creates a certain angle between the first air duct 140 and the second air duct 150, thereby expanding the air supply range of the indoor unit of the air conditioner; on the other hand, it avoids the angle between the first windward surface 211 and the second windward surface 212 being too large, preventing the splitter 210 from generating greater resistance to the airflow, thereby making the air volume of the first air duct 140 and the second air duct 150 larger.

[0068] The included angle between the first windward surface 211 and the second windward surface 212 includes, but is not limited to, 45°, 47°, 50°, 53°, 55°, 56°, 58°, 59° or 60°.

[0069] The air conditioner in this embodiment includes the indoor unit of any of the above embodiments.

[0070] In this embodiment, the air conditioner can be a floor-standing air conditioner, a wall-mounted air conditioner, an embedded air conditioner, etc., with a cross-flow fan.

[0071] The air conditioner of this embodiment has an indoor unit with a diverter 210 located at the downstream outlet of the air outlet duct 130, which has a guide channel 214 connecting to the first air duct 140. When airflow flows through the first air duct 140 and the second air duct 150, the second cross-flow fan 220 can cause a portion of the airflow in the first air duct 140 to enter the guide channel 214. When this portion of airflow is blown out from the leeward side 213 of the diverter 210, it is tilted towards one side of the second air duct 150, thereby increasing the amount of airflow blown into the room from the second air duct 150. Therefore, the airflow volume of the indoor unit of the air conditioner of this embodiment along the first air duct 140 is more uniform.

[0072] Therefore, those skilled in the art should recognize that although numerous exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Thus, the scope of the present invention should be understood and construed as covering all such other variations or modifications.

Claims

1. An indoor unit for an air conditioner, characterized in that, include: A duct assembly, the duct assembly including a front vortex and a rear vortex, the front vortex and the rear vortex defining an air outlet duct; The first cross-flow fan is located upstream of the air outlet duct; The flow splitter assembly includes a flow splitter and a second cross-flow fan. The flow splitter is located at the downstream outlet of the air outlet duct. The flow splitter has a first windward surface corresponding to the front vortex and a second windward surface corresponding to the rear vortex. A first air duct is formed between the first windward surface and the front vortex, and a second air duct is formed between the second windward surface and the rear vortex. The flow divider is provided with a flow guide channel, the air inlet of the flow guide channel penetrates through the first windward side, and the air outlet of the flow guide channel penetrates through the leeward side of the flow divider; the second cross-flow fan is provided at the air outlet to promote the formation of an airflow that enters the flow guide channel from the air inlet and is blown out at an angle from the air outlet toward the second air duct.

2. The indoor unit of the air conditioner according to claim 1, characterized in that, The first air duct includes a first section and a second section in its air outlet direction. The second section is located downstream of the first section, and the first section and the second section are smoothly connected. The air inlet is located on the first section. In a cross-section perpendicular to the rotation axis of the second cross-flow fan, the width of the first segment increases in the air outlet direction, and the width of the second segment decreases in the air outlet direction.

3. The indoor unit of the air conditioner according to claim 2, characterized in that, In a cross-section perpendicular to the rotation axis of the second cross-flow fan, the minimum width dimension of the first segment is greater than the minimum width dimension of the second segment.

4. The indoor unit of the air conditioner according to claim 3, characterized in that, In a cross-section perpendicular to the rotation axis of the second cross-flow fan, the width of the second air duct first decreases and then increases in its air outlet direction; and / or, the width of the inlet end of the second air duct is smaller than the width of the inlet end of the first air duct.

5. The indoor unit of the air conditioner according to claim 1, characterized in that, The flow divider defines a chamber, and the first windward surface of the flow divider is provided with a plurality of first through holes communicating with the chamber, the first through holes forming the air inlet, and the plurality of first through holes being spaced apart in the extension direction of the second cross-flow fan; the leeward surface of the flow divider is provided with at least one second through hole communicating with the chamber, the second through hole forming the air outlet; the first through hole, the chamber, and the second through hole form the flow guiding channel.

6. The indoor unit of the air conditioner according to claim 5, characterized in that, The second cross-flow fan is disposed at the second through hole and is located inside the cavity.

7. The indoor unit of the air conditioner according to claim 5, characterized in that, The second through hole includes a first sidewall and a second sidewall spaced apart, and the second cross-flow fan is located between the first sidewall and the second sidewall; The first sidewall includes a first end and a second end, the first end being closer to the first through hole relative to the second end, and the first end being farther away from the second air duct relative to the second end; the second sidewall includes a third end and a fourth end, the third end being closer to the first through hole relative to the fourth end, and the third end being farther away from the second air duct relative to the fourth end.

8. The indoor unit of the air conditioner according to claim 7, characterized in that, The distance between the second cross-flow fan and the first sidewall is greater than the distance between the second cross-flow fan and the second sidewall.

9. The indoor unit of the air conditioner according to claim 5, characterized in that, On the cross-section of the splitter perpendicular to the rotation axis of the second cross-flow fan, the included angle between the first windward surface and the second windward surface is 45°-60°.

10. An air conditioner, characterized in that, Includes the air conditioning indoor unit as described in any one of claims 1-9.

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