Air duct component and air conditioner indoor unit having same

Abstract

The present application provides an air duct component and an air conditioner indoor unit having same. The air duct component comprises: a volute casing, a first volute tongue, a second volute tongue, and fan blades, the first volute tongue being arranged at an end of the volute casing and surrounding and defining a first communication port together with the volute, the second volute tongue being arranged at another end of the volute casing and surrounding and defining a second communication port together with the volute casing, one of the first communication port and the second communication port being a communication inlet, and the other being a communication outlet, and the fan blades being arranged within the volute casing; and an adjustment member, movably arranged within the volute casing, wherein the adjustment member has a first adjustment position that allows a first spacing from the fan blades and a second adjustment position that allows a second spacing from the fan blades, so that when the adjustment member is switched from the first adjustment position to the second adjustment position, a magnitude relationship between the resistance of the first communication port and the resistance of the second communication port is changed. The technical solution provided by the present application can solve the technical problem in the prior art that an air conditioner indoor unit configured to supply air via air outlets at different positions occupies a relatively large overall space.

Description

Air duct components and indoor air conditioning units containing them

[0001] This application claims priority to the patent application filed on December 25, 2024, with application number 2024119293718 and title "Air duct component and air conditioning indoor unit having the same". Technical Field

[0002] This application relates to the field of air conditioning indoor unit technology, and more specifically, to an air duct component and an air conditioning indoor unit having therein. Background Technology

[0003] Currently, with the increasing demand for comfort features in air conditioners, air outlet methods that use vents at different locations have emerged. Conventional vents in existing technology include upper and lower vents. This allows for airflow that rises during cooling, blowing towards the ceiling through the upper vent, and descends during heating, blowing towards the floor through the lower vent.

[0004] However, conventional air outlet structures in existing technologies often use a single outlet on the volute casing to direct airflow, followed by a guide vane to direct the airflow to either the upper or lower outlet depending on whether it is cooling or heating. This often necessitates additional air ducts on the outer edge of the air duct components, as well as corresponding guide vanes at these ducts, resulting in a larger overall space required for the indoor unit, more components, and increased manufacturing costs. Summary of the Invention

[0005] The main objective of this application is to provide a duct component and an indoor air conditioning unit having the same, so as to solve the technical problem that the existing indoor air conditioning units with air outlets at different locations occupy a large overall space.

[0006] To achieve the above objectives, according to one aspect of this application, a duct component is provided, comprising:

[0007] The system comprises a volute, a first volute tongue, a second volute tongue, and a fan blade. The first volute tongue is located at one end of the volute and forms a first communication port with the volute. The second volute tongue is located at the other end of the volute and forms a second communication port with the volute. One of the first and second communication ports is a communication inlet, and the other is a communication outlet. The fan blade is located inside the volute.

[0008] An adjusting member is movably disposed within the volute. The adjusting member has a first adjusting position with a first distance from the fan blade and a second adjusting position with a second distance from the fan blade, so that when the adjusting member switches from the first adjusting position to the second adjusting position, the magnitude relationship between the resistance of the first communication port and the resistance of the second communication port changes.

[0009] Among them, the sizes of the first spacing and the second spacing are not equal.

[0010] Furthermore, when the adjusting member is in the first adjustment position, the adjusting member is attached to the volute; when the adjusting member is in the second adjustment position, the adjusting member protrudes from the volute.

[0011] Furthermore, when the adjusting member is in the first adjustment position, the resistance of the first communication port is greater than the resistance of the second communication port, so that the first communication port forms a communication outlet; when the adjusting member is in the second adjustment position, the resistance of the first communication port is less than the resistance of the second communication port, so that the second communication port forms a communication outlet;

[0012] Among them, the adjusting member is arranged between the part of the volute connected to the second volute tongue and the wind wheel.

[0013] Furthermore, the adjusting member is rotatably arranged on the volute; and / or,

[0014] The adjusting member is of a plate-like structure.

[0015] Furthermore, when the adjusting member is in the second adjustment position, the included angle between the connection line of the end of the adjusting member close to the wind wheel and the axis of the wind wheel and the connection line of the end of the first volute tongue for enclosing the first communication port and the axis of the wind wheel is β, β1 < β ≤ β2, 30° < β1 ≤ 50°, 75° < β2 ≤ 90°.

[0016] Furthermore, the adjusting member is rotatably arranged on the volute;

[0017] Among them, when the adjusting member is in the second adjustment position, the rotation angle of the adjusting member is γ, γ1 < γ ≤ γ2, 60° < γ1 ≤ 90°, 100° < γ2 ≤ 170°.

[0018] Furthermore, when the adjusting member is in the first adjustment position, the resistance of the first communication port is greater than the resistance of the second communication port, so that the first communication port forms a communication outlet; when the adjusting member is in the second adjustment position, the resistance of the first communication port is less than the resistance of the second communication port, so that the second communication port forms a communication outlet;

[0019] Among them, the width of the first communication port is L1, the width of the second communication port is L2, L1 < aL2, 0.8 < a < 0.95; and / or,

[0020] The spacing between the end of the first volute tongue for enclosing the first communication port and the axis of the wind wheel is M1, the spacing between the end of the second volute tongue for enclosing the second communication port and the axis of the wind wheel is M2, M1 < bM2, 0.7 < b ≤ 0.9; and / or,

[0021] The angle between the line connecting the end of the first volute tongue that forms the first communication opening and the axis of rotation of the fan blade and the line connecting the end of the second volute tongue that forms the second communication opening and the axis of rotation of the fan blade is α, where α ≥ 178°.

[0022] Furthermore, one of the first connecting port and the second connecting port is located above the other of the first connecting port and the second connecting port.

[0023] According to another aspect of this application, an air conditioning indoor unit is provided, including the air duct component provided above.

[0024] Furthermore, the indoor unit of the air conditioner also includes:

[0025] The indoor unit housing and the air duct components are installed inside the indoor unit housing. The indoor unit housing has a first air vent and a second air vent. The first air vent is located on the side of the second air vent that is closer to the first connecting port, and the second air vent is located on the side of the first air vent that is closer to the second connecting port.

[0026] By applying the technical solution of this application, the position of the adjusting member is adjusted so that when the adjusting member switches from the first adjusting position to the second adjusting position, the relationship between the resistance of the first connecting port and the resistance of the second connecting port changes. Thus, when the adjusting member is in the first adjusting position, one of the first and second connecting ports is a connecting inlet and the other a connecting outlet; when the adjusting member is in the second adjusting position, the other of the first and second connecting ports is a connecting outlet and the other a connecting inlet. The air duct component of this application does not require an additional guide air duct or a guide plate structure within the guide air duct. It only requires a first volute tongue, a second volute tongue, and an adjusting member within the volute housing, without changing the overall dimensions and space occupied by the air duct component. Attached Figure Description

[0027] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0028] Figure 1 shows a schematic diagram of the structure of a duct component according to an embodiment of this application;

[0029] Figure 2 shows a schematic diagram of the structure of the air duct component provided according to an embodiment of the present application, in which the first connecting port is located above the second connecting port when the adjustment member is in the first adjustment position;

[0030] Figure 3 shows a schematic diagram of the structure of the air duct component provided according to an embodiment of the present application, in which the second connecting port is located above the first connecting port when the adjustment member is in the first adjustment position;

[0031] Figure 4 shows a schematic diagram of the structure of the air duct component provided according to an embodiment of the present application, in which the first connecting port is located above the second connecting port when the adjusting member is in the second adjusting position;

[0032] Figure 5 shows a schematic diagram of the structure of the air duct component provided according to an embodiment of the present application, in which the second connecting port is located above the first connecting port when the adjustment member is in the second adjustment position.

[0033] The above-mentioned figures include the following reference numerals: 10, air duct component; 11, volute; 111, first housing portion; 112, second housing portion; 12, first volute tongue; 13, second volute tongue; 14, fan blade; 15, first connecting port; 16, second connecting port; 17, adjusting component; 20, indoor unit housing; 21, first air outlet; 22, second air outlet; 31, first air guide plate; 32, second air guide plate; 40, evaporator. Detailed Implementation

[0034] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0035] As shown in Figures 1 to 5, Embodiment 1 of this application provides a duct component 10, which includes a volute 11, a first volute tongue 12, a second volute tongue 13, a fan blade 14, and an adjusting member 17. The first volute tongue 12 is disposed at one end of the volute 11 and forms a first communication port 15 with the volute 11. The second volute tongue 13 is disposed at the other end of the volute 11 and forms a second communication port 16 with the volute 11. One of the first communication port 15 and the second communication port 16 is a communication inlet, and the other is a communication outlet. The fan blade 14 is disposed inside the volute 11. The adjusting member 17 is movably disposed inside the volute 11. The adjusting member 17 has a first adjusting position with a first distance from the fan blade 14 and a second adjusting position with a second distance from the fan blade 14, so that when the adjusting member 17 switches from the first adjusting position to the second adjusting position, the magnitude relationship between the resistance of the first communication port 15 and the resistance of the second communication port 16 changes. The first distance and the second distance are not equal.

[0036] Using the air duct component 10 provided in this embodiment, by adjusting the position of the adjusting member 17, the relationship between the resistance of the first connecting port 15 and the resistance of the second connecting port 16 changes when the adjusting member 17 switches from the first adjustment position to the second adjustment position. This allows one of the first connecting ports 15 and 16 to be a connecting inlet and the other a connecting outlet when the adjusting member 17 is in the first adjustment position, and the other to be a connecting outlet and the other a connecting inlet when the adjusting member 17 is in the second adjustment position. This process can be understood as swapping the connecting inlet and outlet of the adjusting member 17 in the first adjustment position with those in the second adjustment position, thereby achieving a complete change in the air intake and exhaust method. The air duct component 10 in this embodiment does not require an additional guide duct or a guide plate structure within the guide duct; it only needs a first volute tongue 12, a second volute tongue 13, and an adjusting member 17 within the volute housing 11, without changing the overall dimensions and space occupied by the air duct component 10. Therefore, the technical solution provided in this embodiment can solve the technical problem in the prior art that the overall space occupied by the indoor unit of the air conditioner with air outlets at different positions is large.

[0037] In addition, the air conditioner indoor unit provided in this embodiment requires fewer additional parts. The airflow direction of the air duct component 10 can be reversed simply by setting the adjustment component 17, which reduces the overall manufacturing cost.

[0038] Specifically, by making the adjustment plate in the first adjustment position, there is a difference in resistance between the first connecting port 15 and the second connecting port 16, causing the airflow to move to one end; by making the adjustment plate in the second adjustment position, the adjustment member 17 changes the airflow resistance on the side corresponding to where the adjustment member 17 is provided, thereby causing the airflow to change direction.

[0039] Specifically, when the resistance of the first connecting port 15 is greater than the resistance of the second connecting port 16, the first connecting port 15 is the connecting outlet and the second connecting port 16 is the connecting inlet, meaning air is discharged through the first connecting port 15 and air is drawn in through the second connecting port 16. When the resistance of the first connecting port 15 is less than the resistance of the second connecting port 16, the first connecting port 15 is the connecting inlet and the second connecting port 16 is the connecting outlet, meaning air is drawn in through the first connecting port 15 and air is discharged through the second connecting port 16.

[0040] It should be noted that the volute 11 is used to form the air cavity. "The adjusting member 17 is movably disposed within the volute 11" can be understood as the adjusting member 17 being movably disposed within the air cavity; "The fan blade 14 is disposed within the volute 11" can be understood as the fan blade 14 being disposed within the air cavity. The volute 11 includes a first housing portion 111 and a second housing portion 112, which are spaced apart and opposite to each other. A first volute tongue 12 is connected to the first housing portion 111, and the first volute tongue 12 and the end of the second housing portion 112 closest to the first volute tongue 12 form a first connecting opening 15. A second volute tongue 13 is connected to the second housing portion 112, and the second volute tongue 13 and the end of the first housing portion 112 closest to the second volute tongue 13 form a second connecting opening 16. The statement "the relationship between the resistance of the first connecting port 15 and the resistance of the second connecting port 16 changes" can be understood as follows: when the adjusting member 17 is in the first adjusting position, the resistance of the first connecting port 15 is greater than the resistance of the second connecting port 16; therefore, when the adjusting member 17 is in the second adjusting position, the resistance of the first connecting port 15 is less than the resistance of the second connecting port 16. Alternatively, when the adjusting member 17 is in the first adjusting position, the resistance of the first connecting port 15 is less than the resistance of the second connecting port 16; therefore, when the adjusting member 17 is in the second adjusting position, the resistance of the first connecting port 15 is greater than the resistance of the second connecting port 16.

[0041] In this embodiment, the fan blade 14 can be a cross-flow fan blade 14, and only one cross-flow fan blade 14 can be provided in the air duct component 10.

[0042] In this embodiment, when the adjusting member 17 is in the first adjusting position, the adjusting member 17 is attached to the volute 11; when the adjusting member 17 is in the second adjusting position, the adjusting member 17 protrudes from the volute 11. This structural arrangement simplifies the adjustment of the adjusting member 17, facilitating the switching between the first and second spacings. Specifically, the first spacing is greater than the second spacing.

[0043] In this embodiment, when the adjusting member 17 is in the first adjusting position, the resistance of the first connecting port 15 is greater than the resistance of the second connecting port 16, so that the first connecting port 15 forms a connecting outlet; when the adjusting member 17 is in the second adjusting position, the resistance of the first connecting port 15 is less than the resistance of the second connecting port 16, so that the second connecting port 16 forms a connecting outlet. The adjusting member 17 is disposed between the portion of the volute 11 connected to the second volute tongue 13 and the fan blade 14. This structural arrangement facilitates optimization of the adjusting member 17's placement, thereby better increasing the resistance of the second connecting port 16 so that the resistance of the first connecting port 15 is less than the resistance of the second connecting port 16, thus facilitating airflow through the second connecting port 16.

[0044] In one embodiment, the adjusting member 17 is rotatably mounted on the volute 11, which facilitates and stabilizes the adjustment of the adjusting member 17. Specifically, a drive motor can be provided to drive the adjusting member 17 to rotate.

[0045] In another embodiment, the adjusting member 17 is movably or retractably mounted on the volute 11, which facilitates and ensures stable adjustment of the adjusting member 17. Specifically, a drive motor can be provided to drive the adjusting member 17 to move or retract.

[0046] Specifically, in this embodiment, the adjusting member 17 has a plate-like structure, which makes the structure of the adjusting member 17 simple and the adjusting function reliable.

[0047] In this embodiment, when the adjusting member 17 is in the second adjusting position, the angle between the line connecting the end of the adjusting member 17 near the fan blade 14 and the axis of rotation of the fan blade 14, and the line connecting the end of the first volute tongue 12 used to form the first connecting port 15 and the axis of rotation of the fan blade 14, is β, where β1 < β ≤ β2, 30° < β1 ≤ 50°, and 75° < β2 ≤ 90°. This structural arrangement facilitates more precise changes in the resistance of the first connecting port 15 and the resistance of the second connecting port 16, thereby facilitating better changes in the airflow direction. Specifically, β corresponds to the second intake angle.

[0048] It should be noted that the angle between the line connecting the end of the adjusting member 17 near the fan blade 14 and the axis of rotation of the fan blade 14 and the line connecting the end of the first volute tongue 12 used to form the first connecting port 15 and the axis of rotation of the fan blade 14 can be understood by taking a cross-section of the indoor unit of the air conditioner as shown in Figure 1. Thus, the line connecting the end of the adjusting member 17 near the fan blade 14 and the axis of rotation of the fan blade 14 can be understood as the line connecting the end of the adjusting member 17 near the fan blade 14 to the center of the cross-section of the fan blade 14; the line connecting the end of the first volute tongue 12 used to form the first connecting port 15 to the axis of rotation of the fan blade 14 can be understood as the line connecting the end of the first volute tongue 12 used to form the first connecting port 15 to the center of the cross-section of the fan blade 14.

[0049] Specifically, the adjusting member 17 is rotatably mounted on the volute 11. When the adjusting member 17 is in the second adjusting position, its rotation angle is γ, where γ1 < γ ≤ γ2, 60° < γ1 ≤ 90°, and 100° < γ2 ≤ 170°. This allows for precise control of the adjusting member 17, facilitating better adjustment and change of the airflow direction at the first connecting port 15 and the second connecting port 16. Specifically, γ1 < γ ≤ γ2, 60° < γ1 ≤ 90°, and 100° < γ2 ≤ 170° correspond to the first profile condition of the duct component 10. Specifically, γ corresponds to the rotation opening angle.

[0050] In this embodiment, when the adjusting member 17 is in the first adjustment position, the resistance of the first communication port 15 is greater than that of the second communication port 16, so that the first communication port 15 forms a communication outlet; when the adjusting member 17 is in the second adjustment position, the resistance of the first communication port 15 is less than that of the second communication port 16, so that the second communication port 16 forms a communication outlet.

[0051] Among them, the width of the first communication port 15 is L1, and the width of the second communication port 16 is L2, where L1 < aL2 and 0.8 < a < 0.95. In this way, it is possible to facilitate the optimization of the profiles of the volute 11, the first volute tongue 12, and the second volute tongue 13, so that when the adjusting member 17 is in the first adjustment position, air can be discharged better through the first communication port 15 and air can be introduced through the second communication port 16. Preferably, when the adjusting member 17 is in the first adjustment position, the adjusting member 17 is attached to the volute 11. At this time, it can be understood that the air discharge through the first communication port 15 and the air intake through the second communication port 16 are mainly achieved by the parameters of the structures and shapes of the volute 11, the first volute tongue 12, and the second volute tongue 13 themselves. Specifically, L1 < aL2 and 0.8 < a < 0.95 correspond to the second profile condition of the air duct component 10.

[0052] It should be noted that the "width of the first communication port 15" can be understood under the cross-section shown in FIG. 1. The "width of the first communication port 15" can be understood as the width between the end of the first volute tongue 12 that encloses the first communication port 15 and the end of the second housing part 112 that encloses the first communication port 15.

[0053] Specifically, the distance between the end of the first volute tongue 12 that encloses the first communication port 15 and the rotation axis of the impeller 14 is M1, and the distance between the end of the second volute tongue 13 that encloses the second communication port 16 and the rotation axis of the impeller 14 is M2, where M1 < bM2 and 0.7 < b ≤ 0.9. In this way, it is possible to facilitate the optimization of the profiles of the volute ۱۱, the first volute tongue 12, and the second volute tongue 13, so that when the adjusting member 17 is in the first adjustment position, air can be discharged better through the first communication port 15 and air can be introduced through the second communication port 16. Preferably, when the adjusting member 17 is in the first adjustment position, the adjusting member 17 is attached to the volute 11. At this time, it can be understood that the air discharge through the first communication port 15 and the air intake through the second communication port 16 are mainly achieved by the parameters of the structures and shapes of the volute 11, the first volute tongue 12, and the second volute tongue 13 themselves. Specifically, M1 < bM2 and 0.7 < b ≤ 0.9 correspond to the third profile condition of the air duct component 10.

[0054] Generally, satisfying any one of the first, second, and third profile conditions is sufficient to ensure that, in the first adjustment position, the resistance of the first connecting port 15 is greater than the resistance of the second connecting port 16, meaning air is discharged through the first connecting port 15. Satisfying two of the first, second, and third profile conditions further increases the difference in resistance between the first connecting port 15 and the second connecting port 16, thereby improving the stability of the airflow discharged through the first connecting port 15.

[0055] It should be noted that the “width of the second connecting port 16” can be understood in the cross section shown in Figure 1, and the “width of the first connecting port 15” can be understood as the width between the end of the second volute tongue 13 used to form the second connecting port 16 and the end of the first housing part 111 used to form the second connecting port 16.

[0056] Specifically, the angle between the line connecting the end of the first volute tongue 12 that forms the first connecting port 15 and the axis of rotation of the fan blade 14, and the line connecting the end of the second volute tongue 13 that forms the second connecting port 16 and the axis of rotation of the fan blade 14, is α, where α ≥ 178°. This facilitates optimization of the profiles of the volute housing 11, the first volute tongue 12, and the second volute tongue 13, so that when the adjusting member 17 is in the first adjusting position, air can be better discharged through the first connecting port 15 and air can be received through the second connecting port 16. Specifically, α corresponds to the first intake angle.

[0057] Specifically, normal airflow can be achieved when α ≥ 178°. Preferably, 178° ≤ α ≤ 185° to better ensure the airflow effect.

[0058] Preferably, when the adjusting member 17 is in the first adjusting position, the adjusting member 17 is attached to the volute 11. At this time, it can be understood that the air is discharged through the first connecting port 15 and the air is introduced through the second connecting port 16 mainly by relying on the structural and shape parameters of the volute 11, the first volute tongue 12 and the second volute tongue 13.

[0059] In this embodiment, one of the first connecting port 15 and the second connecting port 16 is located above the other of the first connecting port 15 and the second connecting port 16. This allows one of the first connecting ports 15 and the second connecting port 16 to be the upper connecting port, and the other to be the lower connecting port. By adjusting the resistance of the first connecting port 15 and the resistance of the second connecting port 16, one air outlet method (suitable for cooling operation with cold air output) and another air outlet method (suitable for heating operation with hot air output) can be achieved.

[0060] As shown in Figure 2, the first connecting port 15 is the upper connecting port, and the second connecting port 16 is the lower connecting port. Let X be the resistance difference coefficient between the first connecting port 15 and the second connecting port 16, where X = F(L, M, α). With the fan blade 14 rotating in the same direction, and the air conditioner indoor unit meeting the original design requirements of bottom inlet and top outlet, the second connecting port 16 serves as the air inlet, and the first connecting port 15 serves as the air outlet. At this time, the resistance at the outlet should be greater than that at the inlet, ensuring that L1 < aL2, M1 < bM2, and α1 < α < α2. When any one of these three conditions is met, the airflow can flow towards the first air outlet 21, which has greater resistance. However, at this time, the resistance coefficient X is relatively small, making the airflow unstable. When at least two of these three conditions are met, the resistance coefficient requirement is met, achieving bottom inlet and top outlet.

[0061] As shown in Figure 3, the first connecting port 15 is the lower connecting port, and the second connecting port 16 is the upper connecting port. Let X be the resistance difference coefficient between the first connecting port 15 and the second connecting port 16, where X = F(L, M, α). With the fan blade 14 rotating in the same direction and the original design requirement of the indoor air conditioning unit being upper air intake and lower air outlet, the first connecting port 15 serves as the air intake end, and the second connecting port 16 serves as the air outlet end. At this time, the resistance at the air outlet end should be greater than that at the air intake end, ensuring that L1 < aL2, M1 < bM2, and α1 < α < α2. When any one of these three conditions is met, the airflow can flow towards the second air outlet 22, which has greater resistance. However, at this time, the resistance coefficient X is relatively small, making the airflow unstable. When at least two of the above three conditions are met, the resistance coefficient requirement can be met, achieving lower air intake and upper air outlet.

[0062] Specifically, the adjustment principle of the adjusting member 17 is as follows: by designing the volute 11, the first volute tongue 12 and the second volute tongue 13, the resistance of the first connecting port 15 and the second connecting port 16 is different, so that when the adjusting member 17 is not rotated out (corresponding to the first adjustment position), the airflow moves to one end; by extending the adjusting member 17 (corresponding to the second adjustment position) to change the airflow resistance on that side, the airflow is turned.

[0063] As shown in Figure 4, when the air conditioner needs to reverse the airflow, the adjusting component 17 in the air cavity on the left side of the volute 11 is rotated to extend the adjusting component 17 into the air duct. The rotation opening angle is γ, forming a second-stage volute tongue structure, which greatly reduces the second intake angle β and greatly increases the airflow resistance on this side. The eccentric vortex is biased towards the adjusting component 17, thereby causing the airflow to change direction, transforming the original bottom air intake and top air outlet into top air intake and bottom air outlet.

[0064] As shown in Figure 5, when the air conditioner needs to reverse the airflow, the adjusting component 17 in the air cavity on the right side of the volute 11 is rotated to extend the adjusting component 17 into the air duct. The rotation opening angle is γ, forming a second-stage volute tongue structure, which greatly reduces the second intake angle β and greatly increases the airflow resistance on this side. The eccentric vortex is biased towards the adjusting component 17, thereby causing the airflow to change direction, transforming the original top air intake and bottom air outlet into bottom air intake and top air outlet.

[0065] Embodiment 2 of this application provides an air conditioner indoor unit, which includes the air duct component 10 provided in Embodiment 1 above.

[0066] In this embodiment, the indoor unit of the air conditioner also includes an indoor unit housing 20, and an air duct component 10 is disposed within the indoor unit housing 20. The indoor unit housing 20 has a first air vent 21 and a second air vent 22. The first air vent 21 is located on the side of the second air vent 22 closer to the first connecting port 15, and the second air vent 22 is located on the side of the first air vent 21 closer to the second connecting port 16. Specifically, air flowing out of the first connecting port 15 can flow into the room through the first air vent 21, and air from the room can enter the first connecting port 15 through the first air vent 21; air flowing out of the second connecting port 16 can flow into the room through the second air vent 22, and air from the room can enter the second connecting port 16 through the second air vent 22. This arrangement facilitates the selection and control of the air intake and exhaust modes, allowing for either air intake through the first air vent 21 and exhaust through the second air vent 22 or vice versa, based on actual conditions.

[0067] Specifically, one of the first air vent 21 and the second air vent 22 is the upwind vent, and the other of the first air vent 21 and the second air vent 22 is the downwind vent.

[0068] In this embodiment, the indoor unit of the air conditioner can be configured as a wall-mounted structure.

[0069] Specifically, the indoor unit of the air conditioner also includes a first air guide plate 31 and a second air guide plate 32. Specifically, the first air guide plate 31 is rotatably disposed at the first air vent 21 to open or close the first air vent 21, and its rotation angle can be changed when the first air vent 21 is opened to guide the airflow at the first air vent 21. The second air guide plate 32 is rotatably disposed at the second air vent 22 to open or close the second air vent 22, and its rotation angle can be changed when the second air vent 22 is opened to guide the airflow at the second air vent 22.

[0070] In this embodiment, the indoor unit of the air conditioner also includes an evaporator 40, which is disposed above the first communication port 15.

[0071] As can be seen from the above description, the embodiments of this application achieve the following technical effects: by utilizing the profile of the housing component of the ductwork (the housing component of the ductwork includes a volute, a first volute tongue, and a second volute tongue) to change the resistance characteristics, the cross-flow fan can be directed to either upward or downward airflow. Furthermore, by adjusting the regulating component, the relationship between the resistance of the first and second connecting ports can be controlled, further regulating the inlet and outlet air resistance, thereby achieving reverse airflow. The above embodiments achieve a reversible upward and downward airflow effect for a single cross-flow fan, enhancing the convective heat exchange effect in the room, improving the heat exchange capacity of the air conditioner, and avoiding the problem of cold air blowing directly on the human body, resulting in poor comfort.

[0072] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0073] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0074] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0075] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0076] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0077] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An air duct component, characterized by include: The fan housing (11), the first volute tongue (12), the second volute tongue (13), and the fan blade (14) are provided. The first volute tongue (12) is disposed at one end of the fan housing (11) and forms a first communication port (15) with the fan housing (11). The second volute tongue (13) is disposed at the other end of the fan housing (11) and forms a second communication port (16) with the fan housing (11). One of the first communication port (15) and the second communication port (16) is a communication inlet, and the other is a communication outlet. The fan blade (14) is disposed inside the fan housing (11). An adjusting member (17) is movably disposed within the volute (11). The adjusting member (17) has a first adjusting position with a first distance from the fan blade (14) and a second adjusting position with a second distance from the fan blade (14), so that when the adjusting member (17) is switched from the first adjusting position to the second adjusting position, the magnitude relationship between the resistance of the first connecting port (15) and the resistance of the second connecting port (16) changes. The first spacing and the second spacing are not equal in size.

2. The air duct component of claim 1, wherein, When the adjusting member (17) is in the first adjusting position, the adjusting member (17) is attached to the volute (11); when the adjusting member (17) is in the second adjusting position, the adjusting member (17) protrudes from the volute (11).

3. The air duct component according to claim 2, characterized in that, When the adjusting member (17) is in the first adjusting position, the resistance of the first connecting port (15) is greater than the resistance of the second connecting port (16), so that the first connecting port (15) forms the connecting outlet; when the adjusting member (17) is in the second adjusting position, the resistance of the first connecting port (15) is less than the resistance of the second connecting port (16), so that the second connecting port (16) forms the connecting outlet; The adjusting member (17) is disposed between the part of the volute (11) connected to the second volute tongue (13) and the fan blade (14).

4. The air duct component of claim 1, wherein, The adjusting element (17) is rotatably disposed on the volute (11); and / or, The adjusting element (17) has a plate-like structure.

5. The air duct component of claim 3, wherein, When the adjusting member (17) is in the second adjusting position, the angle between the line connecting the end of the adjusting member (17) near the fan blade (14) to the axis of rotation of the fan blade (14) and the line connecting the end of the first volute tongue (12) used to form the first communication port (15) to the axis of rotation of the fan blade (14) is β, β1<β≤β2, 30°<β1≤50°, 75°<β2≤90°.

6. The air duct component according to claim 5, characterized in that, The adjusting member (17) is rotatably mounted on the volute (11); When the adjusting member (17) is in the second adjusting position, the rotation angle of the adjusting member (17) is γ, γ1<γ≤γ2, 60°<γ1≤90°, 100°<γ2≤170°.

7. The air duct component according to claim 1, characterized in that, When the adjusting member (17) is in the first adjusting position, the resistance of the first communication port (15) is greater than that of the second communication port (16), so that the first communication port (15) forms the communication outlet; when the adjusting member (17) is in the second adjusting position, the resistance of the first communication port (15) is less than that of the second communication port (16), so that the second communication port (16) forms the communication outlet; Wherein, the width of the first communication port (15) is L1, the width of the second communication port (16) is L2, L1 < aL2, 0.8 < a < 0.95; and / or, The distance between the end of the first volute tongue (12) for enclosing the first communication port (15) and the rotating shaft of the wind wheel (14) is M1, and the distance between the end of the second volute tongue (13) for enclosing the second communication port (16) and the rotating shaft of the wind wheel (14) is M2, M1 < bM2, 0.7 < b ≤ 0.9; and / or, The included angle between the connecting line of the end of the first volute tongue (12) for enclosing the first communication port (15) and the rotating shaft of the wind wheel (14) and the connecting line of the end of the second volute tongue (13) for enclosing the second communication port (16) and the rotating shaft of the wind wheel (14) is α, α ≥ 178°.

8. The air duct component according to any one of claims 1 to 7, characterized in that, One of the first communication port (15) and the second communication port (16) is located above the other of the first communication port (15) and the second communication port (16).

9. An indoor unit for an air conditioner, characterized in that, Comprising the air duct component according to any one of claims 1 to 8. 10.The indoor unit of the air conditioner according to claim 9, characterized by, The air conditioner indoor unit further comprises: An indoor unit housing (20), the air duct component is arranged in the indoor unit housing (20), the indoor unit housing (20) has a first air outlet (21) and a second air outlet (22), the first air outlet (21) is located on one side of the second air outlet (22) close to the first communication port (15), and the second air outlet (22) is located on one side of the first air outlet (21) close to the second communication port (16).

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