Air duct structure and air conditioner indoor unit having the same

Abstract

The present invention provides an air duct structure and an air conditioner indoor unit having the same. The air duct structure is used for guiding airflow. The air duct structure comprises a first air duct, a first fan blade assembly is provided in the first air duct, and the first fan blade assembly has a first hub; the first air duct is connected with the second air duct, the second air duct has a second fan blade assembly, and the second fan blade assembly has a second hub, the first hub and the second hub are both in the shape of a truncated cone, the first hub has a first large diameter end, the second hub has a second large diameter end, and the first large diameter end and the second large diameter end are arranged opposite to each other, so that the airflow is sucked into the first air duct and then blown out from the second air duct, or the airflow is sucked into the second air duct and then blown out from the first air duct; the guide assembly is arranged between the first air duct and the second air duct to guide the airflow in the first air duct into the second air duct or to guide the airflow in the second air duct into the first air duct, so as to solve the problem of low energy utilization rate of airflow in the air conditioner in the prior art.

Description

Technical Field

[0001] The present invention relates to the field of mechanical design, and in particular to an air duct structure and an air conditioner indoor unit having the same. Background Art

[0002] At present, air conditioners have become indispensable household appliances. Air conditioners have a variety of air outlet modes to meet the needs of users. Among them, the air outlet of air conditioners mainly relies on air ducts to guide the airflow.

[0003] In the existing air-conditioning indoor unit, the air duct is provided with two air outlets to realize the cooling mode or the heating mode. The air flow enters the air duct from the first air outlet and is blown out from the second air outlet, or the air flow is blown into the air duct from the second air outlet and blown out from the first air outlet. However, the above two air outlet modes will cause the two air outlets to blow out air flows of different temperatures at the same time, thereby reducing the energy utilization rate and the human comfort of the user. Summary of the invention

[0004] The main purpose of the present invention is to provide an air duct structure and an air conditioner indoor unit having the same, so as to solve the problem of low energy utilization rate of air flow in the air conditioner in the prior art.

[0005] To achieve the above-mentioned purpose, according to one aspect of the present invention, there is provided an air duct structure for guiding airflow, the air duct structure comprising: a first air duct, wherein a first fan blade assembly is provided in the first air duct, and the first fan blade assembly has a first hub; a second air duct, wherein the first air duct is connected to the second air duct, wherein a second fan blade assembly is provided in the second air duct, and the second fan blade assembly has a second hub, the first hub and the second hub are both in the shape of a truncated cone, the first hub has a first large diameter end, the second hub has a second large diameter end, the first large diameter end and the second large diameter end are arranged opposite to each other, so that the airflow is sucked into the first air duct and then blown out from the second air duct, or the airflow is sucked into the second air duct and then blown out from the first air duct; a guide assembly, wherein the guide assembly is arranged between the first air duct and the second air duct, the guide assembly has a passing space, and the first air duct and the second air duct are connected through the passing space, so as to guide the airflow in the first air duct into the second air duct or guide the airflow in the second air duct into the first air duct.

[0006] Furthermore, the air duct structure also includes: a first driving device, which is drivingly connected to the first fan blade assembly to drive the first fan blade assembly to rotate in a first direction through the first driving device; a second driving device, which is drivingly connected to the second fan blade assembly to drive the second fan blade assembly to rotate in a second direction through the second driving device, and the first direction is opposite to the second direction.

[0007] Furthermore, the air guide assembly includes: a first air guide cover, the first air guide cover extends in a direction close to the first air duct, the first air guide cover has a first passing space for air flow to pass through, at least part of the first driving device is installed in the first passing space; a first guide blade, the first guide blade is installed in the first passing space, there are multiple first guide blades, and the multiple first guide blades are arranged at intervals around the axis of the first air guide cover to form a first guide interval for guiding the airflow between two adjacent first guide blades.

[0008] Further, a first mounting hole is provided in the first passing space, the first guide vane is installed between the inner wall of the first passing space and the outer wall of the first mounting hole, and at least a part of the first driving device is installed in the first mounting hole.

[0009] Furthermore, the air guide assembly also includes: a second air guide cover, the second air guide cover extends in a direction close to the second air duct, the second air guide cover has a second passing space for air flow to pass through, the first passing space is connected to the second passing space to form a passing space, and at least part of the second driving device is installed in the second passing space; a second guide blade, the second guide blade is installed in the second passing space, there are multiple second guide blades, and the multiple second guide blades are arranged at intervals around the axis of the second air guide cover to form a second guide interval for guiding the airflow between two adjacent second guide blades.

[0010] Furthermore, a second mounting hole is provided in the second passing space, the second guide vane is installed between the inner wall of the second passing space and the outer wall of the second mounting hole, and at least a part of the second driving device is installed in the second mounting hole.

[0011] Furthermore, the first air duct has a first air outlet so that air can flow into or out of the first air duct through the first air outlet; the body of the first fan blade assembly extends along the direction of a predetermined axis and extends out of the end surface of the first air outlet.

[0012] Furthermore, there is a predetermined angle between the plane where the end surface of the first air outlet is located and the predetermined axis, and the predetermined angle is an acute angle.

[0013] According to another aspect of the present invention, an air conditioner indoor unit is provided, comprising an evaporator and an air duct structure, wherein the evaporator and the air duct structure are both installed in the body of the air conditioner indoor unit, wherein at least a portion of the evaporator is opposite to the air outlet of the air duct structure, and the air duct structure is the above-mentioned air duct structure.

[0014] Furthermore, the evaporator comprises a first plate body and a second plate body, the first plate body and the second plate body are arranged relatively spaced apart, and the distance between the first plate body and the second plate body gradually decreases in the direction away from the air outlet of the air duct structure.

[0015] Further, the air duct structure is the above-mentioned air duct structure; the second air duct has a second air outlet, so that the air flow flows into or flows out of the second air duct through the second air outlet; a first vent and a second vent are provided on the body, the first vent is connected to the first air outlet, and the second vent is connected to the second air outlet, so that the air flow flows into the air duct structure through the first vent and then is blown out by the second vent, or the air flow flows into the air duct structure through the second vent and then is blown out by the first vent.

[0016] Furthermore, the air-conditioning indoor unit has a first ventilation mode and a second ventilation mode: when the air-conditioning indoor unit is in the first ventilation mode, the first fan blade assembly rotates along the first direction, and the second fan blade assembly rotates along the second direction, so that the air flow is sucked into the first air duct through the first vent, and is discharged from the second air outlet after passing through the second air duct, and then is discharged into the room through the second vent after heat exchange with the evaporator; when the air-conditioning indoor unit is in the second ventilation mode, the first fan blade assembly rotates along the second direction, and the second fan blade assembly rotates along the first direction, the air flow is sucked into the machine body through the second vent to exchange heat with the evaporator, and then is guided into the second air duct by the second air outlet, and then the air flow passes through the first air duct to the first air outlet, so as to be discharged into the room through the first vent.

[0017] The technical solution of the present invention is applied, and the duct structure is used to guide the airflow, wherein the duct structure includes: a first duct, a second duct and a flow guide assembly, the first duct has a first blade assembly, the first blade assembly has a first hub, the first duct is connected to the second duct, the second duct has a second blade assembly, the second blade assembly has a second hub, the first hub and the second hub are both in the shape of a truncated cone, the first hub has a first large diameter end, the second hub has a second large diameter end, the first large diameter end and the second large diameter end are arranged opposite to each other, so that the airflow is guided from the first duct to the second duct. The airflow is sucked in and then blown out from the second duct, or the airflow is sucked in from the second duct and then blown out from the first duct. The guide component is arranged between the first duct and the second duct. The guide component has a passing space. The first duct and the second duct are connected through the passing space to guide the airflow in the first duct into the second duct or the airflow in the second duct into the first duct. The switching of the airflow flow direction is realized. The structure is simple and easy to realize. It can ensure the one-way air inlet and outlet of the duct structure, and solves the problem of low energy utilization rate of air flow by air conditioners in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0019] Figure 1 A first cross-sectional view of the air duct structure according to the present invention is shown;

[0020] Figure 2 A second cross-sectional view of the air duct structure according to the present invention is shown;

[0021] Figure 3 A schematic structural diagram of a first viewing angle of an air duct structure according to the present invention is shown;

[0022] Figure 4 A structural schematic diagram of a second viewing angle of the air duct structure according to the present invention is shown;

[0023] Figure 5 A schematic structural diagram of an embodiment of a first air duct according to the present invention is shown;

[0024] Figure 6 A schematic structural diagram of an embodiment of a first passage space according to the present invention is shown;

[0025] Figure 7 A schematic structural diagram of an embodiment of a second air duct according to the present invention is shown;

[0026] Figure 8 A schematic structural diagram of an embodiment of a second passage space according to the present invention is shown;

[0027] Fig. 9 It shows a structural schematic diagram of a first ventilation mode of an indoor unit of an air conditioner according to the present invention;

[0028] Fig.10 It shows a structural schematic diagram of a second ventilation mode of an indoor unit of an air conditioner according to the present invention;

[0029] Fig.11 A schematic structural diagram of an embodiment of a first fan blade assembly or a second fan blade assembly according to the present invention is shown;

[0030] Fig.12 A schematic structural diagram of a second fan blade assembly or an embodiment of a second fan blade assembly according to the present invention is shown.

[0031] The above drawings include the following reference numerals:

[0032] 1. Evaporator; 2. Machine body; 3. First vent; 4. Second vent;

[0033] 10. first air duct; 11. first fan blade assembly; 12. first air outlet; 20. second air duct; 21. second fan blade assembly; 22. air guide; 220. third guide blade; 2201. guide gap; 23. second air outlet; 30. mounting plate; 310. first drive device; 311. second drive device;

[0034] 32. Guide assembly; 3201. First guide blade; 3202. Second guide blade; 3210. First guide cover; 3211. Second guide cover; 3220. First guide interval; 3221. Second guide interval; 323. Second passing space; 324. First passing space; 3021. First mounting hole; 3022. Second mounting hole; 50. Second necking portion. DETAILED DESCRIPTION

[0035] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0036] The present invention provides a duct structure, please refer to Figures 1 to 12 , used to guide the airflow, the air duct structure includes: a first air duct 10, the first air duct 10 has a first fan blade assembly 11, the first fan blade assembly 11 has a first hub; a second air duct 20, the first air duct 10 is connected to the second air duct 20, the second air duct 20 has a second fan blade assembly 21, the second fan blade assembly 21 has a second hub, the first hub and the second hub are both in the shape of a truncated cone, the first hub has a first large diameter end, the second hub has a second large diameter end, the first large diameter end and the second large diameter end The relative arrangement allows the airflow to be sucked into the first air duct 10 and then blown out from the second air duct 20, or allows the airflow to be sucked into the second air duct 20 and then blown out from the first air duct 10; the guide component 32 is arranged between the first air duct 10 and the second air duct 20, and the guide component 32 has a passing space, and the first air duct 10 and the second air duct 20 are connected through the passing space to guide the airflow in the first air duct 10 into the second air duct 20 or to guide the airflow in the second air duct 20 into the first air duct 10.

[0037] The air duct structure provided by the present invention is used to guide the airflow, wherein the air duct structure includes: a first air duct 10, a second air duct 20 and a guide assembly 32, the first air duct 10 has a first fan blade assembly 11, the first fan blade assembly 11 has a first hub, the first air duct 10 is connected to the second air duct 20, the second air duct 20 has a second fan blade assembly 21, the second fan blade assembly 21 has a second hub, the first hub and the second hub are both in the shape of a truncated cone, the first hub has a first large diameter end, the second hub has a second large diameter end, the first large diameter end and the second large diameter end are arranged opposite to each other, so that the airflow is sucked into the first air duct 10 The airflow is then blown out by the second air duct 20, or the airflow is sucked into the second air duct 20 and then blown out by the first air duct 10. The guide component 32 is arranged between the first air duct 10 and the second air duct 20. The guide component 32 has a through space. The first air duct 10 and the second air duct 20 are connected through the through space to guide the airflow in the first air duct 10 into the second air duct 20 or to guide the airflow in the second air duct 20 into the first air duct 10. The switching of the airflow flow direction can be realized. The structure is simple and easy to implement, and can ensure the one-way air inlet and outlet of the air duct structure, which solves the problem of low energy utilization rate of air flow by air conditioners in the prior art.

[0038] Among them, Fig.11 and Fig.12 As shown, the first fan blade assembly 11 has a first hub, the second fan blade assembly 21 has a second hub, the first hub and the second hub are both truncated cone-shaped, the first hub has a first large diameter end and a first small diameter end, the second hub has a second large diameter end and a second small diameter end, by changing the rotation direction of the first fan blade assembly 11, the first large diameter end is realized to discharge or inlet air, by changing the rotation direction of the second fan blade assembly 21, the second large diameter end is realized to discharge or inlet air, in the embodiment provided by the present invention, the first large diameter end and the second large diameter end are arranged oppositely, and the first fan blade assembly 11 and the second fan blade assembly 21 rotate in opposite directions to guide the airflow. In the embodiment provided by the present invention, as Fig.12 As shown, the first fan blade assembly 11 and / or the second fan blade assembly 21 includes wind guide blades and splitter blades to split the airflow.

[0039] Specifically, Figure 1As shown, the air duct structure also includes: a first driving device 310, the first driving device 310 is drivingly connected to the first fan blade assembly 11, so as to drive the first fan blade assembly 11 to rotate along a first direction through the first driving device 310; a second driving device 311, the second driving device 311 is drivingly connected to the second fan blade assembly 21, so as to drive the second fan blade assembly 21 to rotate along a second direction through the second driving device 311, and the first direction is opposite to the second direction, so that the airflow is sucked into the first air duct 10 and then flows out from the second air duct 20, or the airflow is sucked into the second air duct 20 and then flows out from the first air duct 10; wherein, the driving shaft of the first driving device 310 is drivingly connected to the first large diameter end of the first hub, and the driving shaft of the second driving device 311 is drivingly connected to the second large diameter end of the second hub.

[0040] In the embodiments provided by the present invention, Figures 5 to 8 As shown, the guide assembly 32 includes: a first guide cover 3210, the first guide cover 3210 extends in a direction close to the first air duct 10, the first guide cover 3210 has a first passing space 324 for air flow to pass through, at least part of the first driving device 310 is installed in the first passing space 324; a first guide blade 3201, the first guide blade 3201 is installed in the first passing space 324, there are multiple first guide blades 3201, and the multiple first guide blades 3201 are arranged at intervals around the axis of the first guide cover 3210 to form a first guide interval 3220 for guiding the airflow between two adjacent first guide blades 3201.

[0041] To facilitate the installation of the first driving device 310 , a first mounting hole 3021 is provided in the first passing space 324 , the first guide vane 3201 is installed between the inner wall of the first passing space 324 and the outer wall of the first mounting hole 3021 , and at least part of the first driving device 310 is installed in the first mounting hole 3021 .

[0042] In another embodiment provided by the present invention, the guide assembly 32 also includes: a second guide cover 3211, the second guide cover 3211 extends in a direction close to the second air duct 20, the second guide cover 3211 has a second passing space 323 for air flow to pass through, the first passing space 324 is connected to the second passing space 323 to form a passing space, and at least a portion of the second driving device 311 is installed in the second passing space 323; a second guide blade 3202, the second guide blade 3202 is installed in the second passing space 323, there are multiple second guide blades 3202, and the multiple second guide blades 3202 are arranged at intervals around the axis of the second guide cover 3211 to form a second guide interval 3221 for guiding the airflow between two adjacent second guide blades 3202.

[0043] To facilitate the installation of the second driving device 311 , a second mounting hole 3022 is provided in the second passing space 323 , the second guide vane 3202 is installed between the inner wall of the second passing space 323 and the outer wall of the second mounting hole 3022 , and at least part of the second driving device 311 is installed in the second mounting hole 3022 .

[0044] Preferably, the centerline of the first mounting hole 3021 coincides with the axis of the first air guide 3210. The centerline of the second mounting hole 3022 coincides with the axis of the second air guide 3211.

[0045] The first air duct 10 has a first air port 12 , so that air flows into or out of the first air duct 10 through the first air port 12 ; the body of the first fan blade assembly 11 extends along a predetermined axis and extends out of an end surface of the first air port 12 .

[0046] There is a predetermined angle between the plane where the end face of the first air outlet 12 is located and the predetermined axis, and the predetermined angle is an acute angle, which increases the air outlet and air intake volume of the first air outlet 12 and improves the working efficiency of the first fan blade assembly 11. When the first air outlet 12 discharges air, it can also make the airflow in the first air duct 10 flow out of the first air duct 10 in advance, thereby reducing the resistance in the first air duct 10 and greatly improving the workmanship efficiency.

[0047] The air duct structure also includes: a mounting plate 30, the mounting plate 30 is mounted between the first air duct 10 and the second air duct 20, and at least part of the guide assembly 32 is mounted on the mounting plate 30. By setting the guide assembly 32 between the first air duct 10 and the second air duct 20, the airflow between the first fan blade assembly 11 and the second fan blade assembly 21 is rectified, the eddy loss between the airflows is reduced, and the airflow is converted from circumferential motion to axial motion, thereby improving the air outlet and air induction efficiency of the air duct structure. Specifically, when the first air duct 10 is inducing air, the airflow is rectified by the guide assembly 32, which can reduce the eddy loss between the airflows, and then blown out by the second air duct 20, which can greatly improve the working capacity of the first fan blade assembly 11 and the second fan blade assembly 21, and can also play a secondary supercharging effect on the second air duct. Therefore, the air duct structure in the present invention can greatly increase the air outlet volume, reduce the energy loss of the first fan blade assembly 11 and the second fan blade assembly 21, and through the supercharging effect of the guide assembly 32, it can overcome greater resistance.

[0048] During the specific implementation process, the second air duct 20 also includes: an air guide portion 22, which is arranged on the side of the second fan blade assembly 21 away from the first fan blade assembly 11, and the air guide portion 22 has a third guide blade 220, and the third guide blade 220 is multiple, and the multiple third guide blades 220 are arranged at intervals around a predetermined axis to form a guide gap 2201 between two adjacent third guide blades 220, and the guide gap 2201 extends along the direction of the predetermined axis to guide the airflow, reduce the eddy loss generated by the second fan blade assembly 21, and increase the air intake or air outlet of the second air duct 20.

[0049] Specifically, the air duct structure also includes: a second tapered portion 50, which is arranged on the side of the air guide portion 22 away from the second fan blade assembly 21, so that the airflow flows out of or flows into the second air duct 20 through the second tapered portion 50, and the second tapered portion 50 has a second side wall; a second power device, the second tapered portion 50 is connected to the second power device to drive the second side wall to expand and contract in a direction close to or away from a predetermined axis through the second power device, so as to adjust the flow rate of the airflow in the second tapered portion 50.

[0050] The present invention also provides an air conditioner indoor unit, including an evaporator 1 and an air duct structure, wherein the evaporator 1 and the air duct structure are both installed in a body 2 of the air conditioner indoor unit, at least a portion of the evaporator 1 is opposite to the air outlet of the air duct structure, and the air duct structure is the air duct structure of the above-mentioned embodiment.

[0051] Specifically, in order to improve the heat exchange efficiency between the airflow and the evaporator 1, the evaporator 1 has a first plate and a second plate, the first plate and the second plate are relatively spaced apart, and the distance between the first plate and the second plate gradually decreases in the direction away from the air outlet of the air duct structure.

[0052] In the embodiment provided by the present invention, the air duct structure is the air duct structure of the above-mentioned embodiment; the second air duct 20 has a second air outlet 23, so that the air flow flows into or flows out of the second air duct 20 through the second air outlet 23; the first vent 3 and the second vent 4 are arranged on the body 2, the first vent 3 is connected with the first air outlet 12, and the second vent 4 is connected with the second air outlet 23, so that the air flow flows into the air duct structure through the first vent 3 and is blown out by the second vent 4, or the air flow flows into the air duct structure through the second vent 4 and is blown out by the first vent 3, wherein, since there is a predetermined angle between the plane where the end face of the first air outlet 12 is located and the predetermined axis, a more exposed part of the first air outlet 12 is opposite to the first vent 3, so as to increase the air outlet or air intake of the air conditioner indoor unit.

[0053] The air conditioner indoor unit has a first ventilation mode and a second ventilation mode: when the air conditioner indoor unit is in the first ventilation mode, the first fan blade assembly 11 rotates along the first direction, and the second fan blade assembly 21 rotates along the second direction, so that the air flow is sucked into the first air duct 10 through the first vent 3, and is discharged from the second air duct 20 by the second air vent 23, and then is discharged into the room through the second vent 4 after heat exchange with the evaporator 1; when the air conditioner indoor unit is in the second ventilation mode, the first fan blade assembly 11 rotates along the second direction, and the second fan blade assembly 21 rotates along the first direction, the air flow is sucked into the body 2 through the second vent 4 to exchange heat with the evaporator 1, and then is guided into the second air duct 20 by the second air vent 23, and then the air flow passes through the first air duct 10 to the first air vent 12, so as to be discharged into the room through the first vent 3.

[0054] During specific use, the air conditioner includes a cooling mode and a heating mode. In this embodiment, taking a vertical air conditioner as an example, the first vent 3 is located at the lower part of the air conditioner body, and the second vent 4 is located at the upper part of the air conditioner body. When the air conditioner is in the heating mode, air is sucked in by the second air duct 20, and the hot air flows through the first air duct 10 and is discharged into the room through the first vent 3; when the air conditioner is in the cooling mode, air is sucked in by the first air duct 10, and the cold air flows through the second air duct 20 and is discharged into the room through the second vent 4, which improves the energy utilization rate of the air flow by the air conditioner and improves the comfort of the user.

[0055] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0056] The air duct structure provided by the present invention is used to guide the airflow, wherein the air duct structure includes: a first air duct 10, a second air duct 20 and a guide assembly 32, the first air duct 10 has a first fan blade assembly 11, the first fan blade assembly 11 has a first hub, the first air duct 10 is connected to the second air duct 20, the second air duct 20 has a second fan blade assembly 21, the second fan blade assembly 21 has a second hub, the first hub and the second hub are both in the shape of a truncated cone, the first hub has a first large diameter end, the second hub has a second large diameter end, the first large diameter end and the second large diameter end are arranged opposite to each other, so that the airflow is sucked into the first air duct 10 The airflow is then blown out by the second air duct 20, or the airflow is sucked into the second air duct 20 and then blown out by the first air duct 10. The guide component 32 is arranged between the first air duct 10 and the second air duct 20. The guide component 32 has a through space. The first air duct 10 and the second air duct 20 are connected through the through space to guide the airflow in the first air duct 10 into the second air duct 20 or to guide the airflow in the second air duct 20 into the first air duct 10. The switching of the airflow flow direction can be realized. The structure is simple and easy to implement, and can ensure the one-way air inlet and outlet of the air duct structure, which solves the problem of low energy utilization rate of air flow by air conditioners in the prior art.

[0057] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An air duct structure for guiding airflow, characterized in that: The air duct structure comprises: A first air duct (10), wherein a first air blade assembly (11) is provided in the first air duct (10), and the first air blade assembly (11) has a first hub; a second air duct (20), wherein the first air duct (10) is in communication with the second air duct (20), wherein the second air duct (20) has a second fan blade assembly (21), wherein the second fan blade assembly (21) has a second hub, wherein the first hub and the second hub are both in the shape of a truncated cone, wherein the first hub has a first large diameter end, wherein the second hub has a second large diameter end, wherein the first large diameter end and the second large diameter end are arranged opposite to each other, so that the airflow is sucked into the first air duct (10) and then blown out of the second air duct (20), or the airflow is sucked into the second air duct (20) and then blown out of the first air duct (10); a flow guide component (32), the flow guide component (32) being arranged between the first air duct (10) and the second air duct (20), the flow guide component (32) having a passing space, the first air duct (10) and the second air duct (20) being connected through the passing space, so as to guide the airflow in the first air duct (10) into the second air duct (20) or guide the airflow in the second air duct (20) into the first air duct (10); The air duct structure also includes: a first driving device (310), the first driving device (310) being drivingly connected to the first fan blade assembly (11), so as to drive the first fan blade assembly (11) to rotate along a first direction through the first driving device (310); A second driving device (311), the second driving device (311) being drivingly connected to the second fan blade assembly (21), so as to drive the second fan blade assembly (21) to rotate along a second direction through the second driving device (311), the first direction being opposite to the second direction.

2. The air duct structure according to claim 1, characterized in that: The flow guide component (32) comprises: a first air guide cover (3210), the first air guide cover (3210) extending in a direction close to the first air duct (10), the first air guide cover (3210) having a first passing space (324) for airflow to pass through, and at least a portion of the first driving device (310) being installed in the first passing space (324); A first guide blade (3201), the first guide blade (3201) is installed in the first passing space (324), there are a plurality of the first guide blades (3201), and the plurality of the first guide blades (3201) are arranged at intervals around the axis of the first guide cover (3210) to form a first guide interval (3220) for guiding the airflow between two adjacent first guide blades (3201).

3. The air duct structure according to claim 2, characterized in that: A first mounting hole (3021) is provided in the first passing space (324); the first guide vane (3201) is mounted between an inner wall of the first passing space (324) and an outer wall of the first mounting hole (3021); and at least a portion of the first driving device (310) is mounted in the first mounting hole (3021).

4. The air duct structure according to claim 2, characterized in that: The flow guide component (32) further includes: a second air guide cover (3211), the second air guide cover (3211) extending in a direction close to the second air duct (20), the second air guide cover (3211) having a second passing space (323) for airflow to pass through, the first passing space (324) being connected to the second passing space (323) to form the passing space, and at least a portion of the second driving device (311) being installed in the second passing space (323); A second guide blade (3202), the second guide blade (3202) is installed in the second passing space (323), and there are multiple second guide blades (3202), and the multiple second guide blades (3202) are arranged at intervals around the axis of the second guide cover (3211) to form a second guide interval (3221) for guiding the airflow between two adjacent second guide blades (3202).

5. The air duct structure according to claim 4, characterized in that: A second mounting hole (3022) is provided in the second passing space (323); the second guide vane (3202) is mounted between an inner wall of the second passing space (323) and an outer wall of the second mounting hole (3022); and at least a portion of the second driving device (311) is mounted in the second mounting hole (3022).

6. The air duct structure according to any one of claims 1 to 5, characterized in that: The first air duct (10) has a first air outlet (12) so that air can flow into or out of the first air duct (10) through the first air outlet (12); the body of the first fan blade assembly (11) extends in the direction of a predetermined axis and extends beyond the end surface of the first air outlet (12).

7. The air duct structure according to claim 6, characterized in that: There is a predetermined angle between the plane where the end surface of the first air outlet (12) is located and the predetermined axis, and the predetermined angle is an acute angle.

8. An air conditioner indoor unit, comprising an evaporator (1) and an air duct structure, wherein the evaporator (1) and the air duct structure are both installed in a body (2) of the air conditioner indoor unit, and at least a portion of the evaporator (1) is opposite to an air outlet of the air duct structure, characterized in that: The air duct structure is the air duct structure according to any one of claims 1 to 7.

9. The air conditioner indoor unit according to claim 8, characterized in that: The evaporator (1) comprises a first plate body and a second plate body, the first plate body and the second plate body are arranged relatively spaced apart, and the distance between the first plate body and the second plate body gradually decreases in a direction away from the air outlet of the air duct structure.

10. The air conditioner indoor unit according to claim 9, characterized in that: The air duct structure is the air duct structure according to claim 6; the second air duct (20) has a second air outlet (23), so that air flows into or out of the second air duct (20) through the second air outlet (23); The machine body (2) is provided with a first vent (3) and a second vent (4), the first vent (3) being in communication with the first air port (12), and the second vent (4) being in communication with the second air port (23), so that airflow flows into the air duct structure through the first vent (3) and is blown out through the second vent (4), or airflow flows into the air duct structure through the second vent (4) and is blown out through the first vent (3).

11. The air conditioner indoor unit according to claim 10, characterized in that: The air conditioner indoor unit has a first ventilation mode and a second ventilation mode: When the air conditioner indoor unit is in the first ventilation mode, the first fan blade assembly (11) rotates in a first direction, and the second fan blade assembly (21) rotates in a second direction, so that airflow is sucked into the first air duct (10) through the first vent (3), and is discharged from the second air duct (20) through the second air duct (20), and then is discharged into the room through the second vent (4) after heat exchange with the evaporator (1); When the air conditioner indoor unit is in the second ventilation mode, the first fan blade assembly (11) rotates in the second direction, the second fan blade assembly (21) rotates in the first direction, and the air flow is sucked into the machine body (2) through the second ventilation port (4) to exchange heat with the evaporator (1), and then guided into the second air duct (20) through the second air port (23), and then the air flow passes through the first air duct (10) to the first air port (12), and is discharged into the room through the first ventilation port (3).

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