Air duct assembly, indoor air-conditioning unit, and control method

Abstract

The present application provides an air duct assembly, an indoor air-conditioning unit, and a control method. The air duct assembly comprises: a volute structure and a fan blade, wherein the fan blade is mounted in an air cavity, and the volute structure is provided with a clearance groove; and a regulation member, movably arranged at the clearance groove, the regulation member having a closed position at which at least part of the regulation member overlaps the clearance groove to block an airflow gap between the regulation member and the clearance groove, and an open position at which at least part of the regulation member extends out of the clearance groove, wherein when the regulation member is located at the closed position, the side of the regulation member close to the fan blade is adapted to the shape of the volute structure, and when the regulation member is located at the open position, at least part of the fan blade and the clearance groove are both spaced apart from the regulation member, so that airflow flows through two sides of the regulation member to change an air inlet direction and an air outlet direction of the air cavity. The technical solution provided by the present application can solve the technical problem in the prior art of large energy waste caused by upper and lower air outlet modes.

Description

Air duct components, indoor air conditioning unit and control method

[0001] This application claims priority to the patent application filed on December 25, 2024, with application number 2024119292700 and titled "Air duct component, indoor air conditioning unit and control method". Technical Field

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

[0003] Currently, using top-discharge air for cooling and bottom-discharge air for heating is one of the important methods to improve airflow comfort in the air conditioning industry. This allows the airflow to rise and blow towards the ceiling through the top air outlet when cooling, and to sink and blow towards the floor through the bottom air outlet when heating, thus reducing energy waste to a certain extent.

[0004] However, because cold air is denser, it sinks when sent to the top of the room and gradually accumulates at the bottom; while hot air is less dense, it rises when sent to the bottom and gradually accumulates at the top. Thus, even after the air conditioner has been running for a long time, temperature stratification still occurs in the room. This results in a temperature difference between the air accumulated at the bottom (top) and the air at the top (bottom) during cooling (heating). The heated air enters the air conditioner's intake directly, causing the air conditioner to mistakenly believe the preset room temperature has been reached. Consequently, it stops heating before the preset temperature is reached at the bottom. During cooling, the hot air at the top causes the air conditioner to continuously produce low temperatures until the top air temperature reaches the preset value, resulting in the temperature at the bottom being lower than the preset value. Simultaneously, the hot air accumulated at the top or the cold air at the bottom is not effectively utilized, leading to energy waste. Summary of the Invention

[0005] The main objective of this application is to provide a duct component, an indoor air conditioning unit, and a control method to solve the technical problem that the existing top and bottom air outlet methods result in significant energy waste.

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

[0007] The volute structure and the fan blade are provided. The volute structure forms a first connecting port, a second connecting port, and a wind cavity that is connected to both the first and second connecting ports. The fan blade is installed in the wind cavity. The volute structure is provided with a clearance groove.

[0008] An adjusting member is movably disposed in a relief groove, the adjusting member having a closed position that overlaps at least a portion of the relief groove to seal the airflow gap between the adjusting member and the relief groove, and an open position that extends out of at least a portion of the relief groove.

[0009] When the adjusting component is in the closed position, the side of the adjusting component near the fan blade is adapted to the shape of the volute structure; when the adjusting component is in the open position, at least a part of the fan blade and the clearance groove are spaced apart from the adjusting component so that the airflow passes through both sides of the adjusting component to change the inlet and outlet airflow direction of the air cavity.

[0010] Furthermore, along the direction of airflow, the clearance groove has a first end and a second end that are positioned opposite each other;

[0011] When the adjusting member is in the closed position, it overlaps one of the first and second ends, and is spaced apart from the other of the first and second ends; or...

[0012] When the adjusting member is in the closed position, it overlaps the first and second ends; or...

[0013] When the adjusting element is in the closed position, it blocks the opening of the clearance groove.

[0014] Furthermore, the adjusting element is rotatably disposed in the clearance groove.

[0015] Furthermore, the adjusting member has a rotating end and a free end that are arranged opposite to each other, and the free end is rotatably arranged relative to the rotating end;

[0016] Wherein, the distance between the rotating end and the bottom wall of the clearance groove is a, a≥5mm; and / or,

[0017] The distance between the rotating end and the sidewall of the clearance groove is b, where b ≥ 5 mm; and / or,

[0018] The minimum distance between the free end and the wall of the clearance groove is c, where c ≥ 5 mm; and / or,

[0019] The rotation angle of the adjusting component is α, where 15°≤α≤75°.

[0020] Furthermore, an overlapping step is provided at the clearance groove, which is adapted to the end of the adjusting member; when the adjusting member is in the closed position, the adjusting member overlaps at the overlapping step.

[0021] Furthermore, the volute structure includes a first volute component and a second volute component, wherein the volute portion of the first volute component and the volute tongue portion of the second volute component form a first communication opening, and the volute portion of the second volute component and the volute tongue portion of the first volute component form a second communication opening.

[0022] There are at least two clearance grooves, one of which is located on the volute portion of the first volute component and the other is located on the volute portion of the second volute component. There are at least two adjustment members, each of which is provided in a one-to-one correspondence with the at least two clearance grooves. Each adjustment member is movably located at the corresponding clearance groove.

[0023] Furthermore, when one of the at least two adjusting members is in the closed position, the other of the at least two adjusting members is in the open position.

[0024] Furthermore, when the adjusting member corresponding to the clearance groove on the first volute is in the closed position, the adjusting member blocks the end of the clearance groove on the first volute near the tongue of the first volute; and / or,

[0025] When the adjusting member corresponding to the clearance groove on the first volute is in the closed position, the side of the adjusting member near the fan blade is adapted to the profile of the volute portion of the first volute; and / or,

[0026] The inclination of the side wall of the clearance groove near the tongue of the first volute is less than the inclination of the side wall of the clearance groove near the volute portion of the first volute.

[0027] Furthermore, when the adjusting member corresponding to the clearance groove on the second volute is in the closed position, the adjusting member blocks one end of the clearance groove on the second volute near the tongue of the second volute; and / or,

[0028] When the adjusting member corresponding to the clearance groove on the second volute is in the closed position, the side of the adjusting member near the fan blade is adapted to the profile of the volute portion of the second volute; and / or,

[0029] The inclination of the side wall of the clearance groove near the tongue of the second volute is less than the inclination of the side wall of the clearance groove near the volute portion of the second volute.

[0030] According to another aspect of this application, an air conditioning indoor unit is provided, comprising:

[0031] The aforementioned air duct components;

[0032] The indoor unit housing and the air duct components are installed inside the indoor unit housing. The indoor unit housing has an upper air vent and a lower air vent that are spaced apart. The upper air vent is located on the side of the lower air vent that is closer to the first connecting port, and the lower air vent is located on the side of the upper air vent that is closer to the second connecting port.

[0033] Furthermore, the indoor unit of the air conditioner also includes:

[0034] The upper air guide plate is rotatably installed at the upper air outlet;

[0035] The lower air guide plate is rotatably installed at the downwind vent.

[0036] According to another aspect of this application, a control method is provided, applicable to the air conditioning indoor unit provided above, the control method comprising:

[0037] Obtain the air outlet mode of the indoor unit of the air conditioner;

[0038] Adjust the regulating components of the air duct of the indoor unit according to the air outlet mode of the indoor unit;

[0039] The air outlet modes include top air outlet mode and bottom air outlet mode.

[0040] Furthermore, the air duct component is the air duct component provided above; according to the air outlet mode of the air conditioning indoor unit, the adjusting parts of the air duct component of the air conditioning indoor unit are adjusted, including:

[0041] When the indoor unit of the air conditioner is in the top air outlet mode, at least one of the two adjustment components is in the closed position and the other of the two adjustment components is in the open position.

[0042] When the indoor unit of the air conditioner is in the down-discharge mode, it controls at least one of the two adjustment components to be in the off position and at least one of the two adjustment components to be in the on position.

[0043] Furthermore, the indoor unit of the air conditioner is the indoor unit of the air conditioner provided above;

[0044] When the indoor unit of the air conditioner is in the top air outlet mode, the control method also includes:

[0045] Control the upper air guide plate of the indoor air conditioner to rotate to a first preset angle A1, which is less than the maximum opening angle A0 of the upper air guide plate; control the lower air guide plate to rotate to the maximum opening angle B0 of the lower air guide plate; obtain the operating status of the fan blades of the air duct component; adjust the rotation angle of the upper air guide plate according to the operating status of the fan blades.

[0046] When the indoor unit of the air conditioner is in the down-discharge mode, the control method also includes:

[0047] Control the upper air guide plate of the indoor air conditioner to rotate to the maximum opening angle A0, and control the lower air guide plate to rotate to the second preset angle B1, where the second preset angle B1 is less than the maximum opening angle B0 of the lower air guide plate; obtain the operating status of the fan blades of the air duct component; and adjust the rotation angle of the lower air guide plate according to the operating status of the fan blades.

[0048] Furthermore, the rotation angle of the upper guide vane is adjusted according to the operation of the fan blades, including: when the operating voltage of the fan blades is stable for a duration greater than or equal to t0, controlling the upper guide vane to rotate from a first preset angle A1 to the maximum opening angle A0 of the upper guide vane; and / or,

[0049] The rotation angle of the lower guide vane is adjusted according to the operation of the fan blades, including: when the operating voltage of the fan blades is stable for a duration greater than or equal to t0, the lower guide vane is controlled to rotate from the second preset angle B1 to the maximum opening angle A0 of the lower guide vane.

[0050] Furthermore, the indoor unit of the air conditioner is the indoor unit of the air conditioner provided above;

[0051] Wherein, when the indoor unit of the air conditioner is in the top air outlet mode, after controlling at least one of the two adjusting components to be in the closed position and the other of the two adjusting components to be in the open position, the control method further includes: controlling the upper air guide plate of the indoor unit to rotate to a first preset angle A1, the first preset angle being less than the maximum opening angle A0 of the upper air guide plate; controlling the lower air guide plate to rotate to the maximum opening angle B0 of the lower air guide plate; acquiring the operating status of the fan blades of the air duct component; adjusting the rotation angle of the upper air guide plate according to the operating status of the fan blades; and / or,

[0052] When the indoor unit of the air conditioner is in the downward air outlet mode, after controlling at least one of the two adjusting components to be in the closed position and one of the two adjusting components to be in the open position, the control method further includes: controlling the upper air guide plate of the indoor unit to rotate to the maximum opening angle A0 of the upper air guide plate, controlling the lower air guide plate to rotate to the second preset angle B1, the second preset angle B1 being less than the maximum opening angle B0 of the lower air guide plate; acquiring the operating status of the fan blades of the air duct component; and adjusting the rotation angle of the lower air guide plate according to the operating status of the fan blades.

[0053] By applying the technical solution of this application, when the regulating component is in the closed position, airflow is introduced through one of the first and second connecting ports and exited through the other. This effectively prevents airflow from accumulating at one of the first and second connecting ports, facilitating efficient utilization of the airflow at the connecting port used for air intake and avoiding energy waste. When the regulating component is in the open position, due to the effect of the regulating component on the airflow, the airflow passes through both sides of the regulating component and forms an eccentric vortex at the regulating component. The position of the eccentric vortex has changed compared to when the regulating component is in the open position, thus changing the airflow direction of the air cavity. Airflow is then introduced through one of the first and second connecting ports and exited through the other. This effectively prevents airflow from accumulating at the other of the first and second connecting ports, facilitating efficient utilization of the airflow at the connecting port used for air intake and avoiding energy waste. Attached Figure Description

[0054] 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:

[0055] Figure 1 shows a schematic diagram of the structure of the air duct component provided according to an embodiment of this application;

[0056] Figure 2 shows a schematic diagram of the position of the eccentric vortex of the air duct component provided according to an embodiment of the present application in the top air outlet mode;

[0057] Figure 3 shows a schematic diagram of the position of the eccentric vortex of the air duct component provided according to an embodiment of the present application in the downward air outlet mode;

[0058] Figure 4 shows a comparative schematic diagram of the adjusting member of the air duct component provided according to an embodiment of the present application in the open and closed positions;

[0059] Figure 5 shows a partial enlarged view of Figure 4;

[0060] Figure 6 shows a schematic diagram of the airflow direction of the duct component provided according to an embodiment of this application in the bottom air outlet mode;

[0061] Figure 7 shows a schematic diagram of the airflow direction of the duct component provided according to an embodiment of this application in the top air outlet mode;

[0062] Figure 8 shows a schematic diagram of the structure of the air duct component provided according to the embodiment of this application when the upper air guide plate is opened at an angle of A1 in the upper air outlet mode;

[0063] Figure 9 shows a schematic diagram of the structure of the air duct component provided according to the embodiment of this application when the upper air guide plate is opened at an angle of A0 in the upper air outlet mode;

[0064] Figure 10 shows a schematic diagram of the structure of the air duct component provided according to the embodiment of this application when the lower air guide plate is opened at an angle of B1 in the lower air outlet mode;

[0065] Figure 11 shows a schematic diagram of the structure of the air duct component provided according to the embodiment of this application when the lower air guide plate is opened at an angle of B0 in the downward air outlet mode;

[0066] Figure 12 shows a flowchart of a control method provided according to an embodiment of this application.

[0067] The above-mentioned figures include the following reference numerals: 10, air duct component; 11, volute structure; 111, first connecting port; 112, second connecting port; 113, air cavity; 114, clearance groove; 1141, first end; 1142, second end; 1143, overlapping step; 115, first volute component; 1151, first volute portion; 1152, first volute tongue portion; 116, second volute component; 1161, second volute portion; 1162, second volute tongue portion; 12, fan blade; 13, adjusting component; 131, rotating end; 132, free end; 20, indoor unit housing; 21, upper air outlet; 22, lower air outlet; 31, upper air guide plate; 32, lower air guide plate; 40, heat exchanger; 50, auxiliary heating structure; 60, eccentric vortex. Detailed Implementation

[0068] 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.

[0069] As shown in Figures 1 to 11, an embodiment of this application provides a duct component 10, which includes a volute structure 11, a fan blade 12, and an adjusting member 13. The volute structure 11 forms a first connecting port 111, a second connecting port 112, and a wind cavity 113 that communicates with both the first connecting port 111 and the second connecting port 112. The fan blade 12 is installed inside the wind cavity 113, and the volute structure 11 is provided with a clearance groove 114. The adjusting member 13 is movably disposed at the clearance groove 114, and the adjusting member 13 has a closed position that overlaps at least a portion of the clearance groove 114 to seal the airflow gap between the adjusting member 13 and the clearance groove 114, and an open position that extends at least a portion of the adjusting member 13 out of the clearance groove 114. When the adjusting member 13 is in the closed position, the side of the adjusting member 13 near the fan blade 12 is adapted to the shape of the volute structure 11; when the adjusting member 13 is in the open position, at least a part of the fan blade 12 and the clearance groove 114 are spaced apart from the adjusting member 13 so that the airflow passes through both sides of the adjusting member 13 to change the airflow direction of the air cavity 113.

[0070] Specifically, the airflow passing through both sides of the regulating member 13 will form an eccentric vortex 60 at the regulating member 13, causing the position of the eccentric vortex 60 in the air cavity 113 to change, thereby changing the air inlet and outlet direction of the air cavity 113. It should be noted that "changing the air inlet and outlet direction of the air cavity 113" can be understood as follows: when the regulating member 13 is in the closed position, one of the first connecting port 111 and the second connecting port 112 is for air inlet and the other is for air outlet; when the regulating member 13 is in the open position, one of the first connecting port 111 and the second connecting port 112 is for air outlet and the other is for air outlet; the change in the air inlet and outlet direction can be understood as a change in the air inlet and outlet direction. It should be noted that "when the adjusting member 13 is in the closed position, the side of the adjusting member 13 near the fan blade 12 is adapted to the shape of the volute structure 11" can be understood as the shape of the side of the adjusting member 13 near the fan blade 12 being spliced ​​with the shape of the volute structure 11 to form a volute structure 11 with a complete or nearly complete volute profile when the adjusting member 13 is in the closed position.

[0071] When the regulating member 13 is in the closed position, the air duct component 10 provided in this embodiment allows air to enter through one of the first connecting port 111 and the second connecting port 112 and exit through the other. This effectively prevents airflow from accumulating at one of the first connecting port 111 and the second connecting port 112, making it easier to make full use of the airflow at the connecting port used for air intake in the first connecting port 111 and the second connecting port 112, and avoiding energy waste. When the regulating member 13 is in the open position, the flow resistance at the location with the regulating member 13 increases, and the resistance is greater than on the side without the regulating member 13 in the open position. Due to the effect of the regulating member 13 on the airflow, the airflow passes through both sides of the regulating member 13 and forms an eccentric vortex 60 at the regulating member 13 (specifically, an eccentric vortex 60 is formed on the swirl-out side of the regulating member 13). The position of the eccentric vortex 60 at this time has changed compared to the position of the eccentric vortex 60 when the regulating member 13 is in the open position, thus changing the airflow direction of the air cavity 113. Airflow exits through one of the first connecting port 111 and the second connecting port 112, and enters through the other. This effectively prevents the airflow from accumulating at the other location of the first connecting port 111 and the second connecting port 112, making it easier to effectively utilize the airflow at the connecting port used for air intake in the first connecting port 111 and the second connecting port 112, and avoiding energy waste. The air duct component 10 in this embodiment can flexibly realize reversible vertical airflow adjustment. Therefore, the air duct component 10 provided in this embodiment can solve the technical problem of large energy waste caused by the top and bottom air outlet method in the prior art.

[0072] In this embodiment, the duct component 10 enables reversible airflow technology. During heating, air enters through the upper air inlet (which can correspond to the first connecting port 111) and exits through the lower air inlet (which can correspond to the second connecting port 112), drawing in air accumulated at the top of the room and sending it to the bottom of the room. During cooling, air enters through the lower air inlet and exits through the upper air inlet, drawing in air accumulated at the bottom of the room through the lower air inlet and sending it to the top of the room through the upper air inlet. This improves energy utilization efficiency. Specifically, in the field of wall-mounted air conditioners, this embodiment addresses the problem of temperature accumulation and the energy waste caused by hot air accumulated at the top of the room or cold air accumulated at the bottom, thereby improving energy utilization. A reversible airflow duct component 10 is designed. This duct component achieves reversible airflow direction by adjusting the internal flow resistance of the volute and the airflow resistance of the upper and lower air inlets. This solution provides a stable and controllable reversible upper and lower airflow duct.

[0073] It should be noted that "the adjustment member 13 has at least a portion overlapping the clearance groove 114 to block the airflow gap between the adjustment member 13 and the clearance groove 114" can be understood as the adjustment member 13 blocking one end or both ends of the clearance groove 114 to prevent airflow from passing through the clearance groove 114.

[0074] Specifically, when the adjusting member 13 is in the open position, the airflow will flow through the gap between the adjusting member 13 and the clearance groove 114, thereby reaching the side of the rotating plate near the clearance groove 114 to form a pressure gradient, thereby increasing resistance and making the air delivery of the fan blade 12 more stable. Specifically, the fan blade 12 is a cross-flow fan blade.

[0075] In this embodiment, along the airflow direction, the clearance groove 114 has a first end 1141 and a second end 1142 disposed opposite to each other. When the adjusting member 13 is in the closed position, the adjusting member 13 overlaps one of the first end 1141 and the second end 1142, and the adjusting member 13 is spaced apart from the other of the first end 1141 and the second end 1142. Thus, when the adjusting member 13 overlaps one of the first end 1141 and the second end 1142 and is the airflow inlet end, airflow is prevented from entering the clearance groove 114, and airflow is prevented from flowing through the side of the adjusting member 13 closest to the clearance groove 114. This effectively achieves the function of closing the airflow at the clearance groove 114, thereby preventing the adjusting member 13 from affecting the airflow within the air cavity 113 when in the closed position. When the adjusting member 13 is attached to one of the first end 1141 and the second end 1142 and is the air outlet end, even if some airflow enters into the clearance groove 114, it will not flow out through the air outlet end. This can prevent the airflow entering the clearance groove 114 from flowing out from the side of the adjusting member 13 near the clearance groove 114, thereby effectively achieving the function of closing the airflow at the clearance groove 114. This ensures that when the adjusting member 13 is in the closed position, it avoids affecting the airflow in the air cavity 113.

[0076] Alternatively, when the adjusting member 13 is in the closed position, the adjusting member 13 overlaps at the first end 1141 and the second end 1142. This can better achieve the closure of the clearance groove 114, blocking the airflow from flowing smoothly through the side of the adjusting member 13 near the clearance groove 114, and avoiding the situation where the position of the eccentric vortex 60 needs to be adjusted due to the influence of the adjusting member 13 on the airflow.

[0077] Alternatively, when the adjusting member 13 is in the closed position, it blocks the opening of the clearance groove 114. This facilitates better adaptation of the adjusting member 13 to the volute structure 11, allowing them to be joined to form a complete volute profile. This better prevents airflow from entering the clearance groove 114, thus avoiding the need to adjust the position of the eccentric vortex 60 due to the influence of the adjusting member 13 on the airflow.

[0078] In this embodiment, the adjusting member 13 is rotatably disposed at the clearance groove 114, which facilitates the rotation of the adjusting member 13 so that the adjusting member 13 can be smoothly rotated to the closed position or the open position.

[0079] Specifically, the adjusting member 13 has a rotating end 131 and a free end 132 disposed opposite to each other, the free end 132 being rotatably disposed relative to the rotating end 131.

[0080] Specifically, the distance between the rotating end 131 and the bottom wall of the clearance groove 114 is a, where a ≥ 5 mm. This avoids interference between the rotating end 131 and the bottom wall of the clearance groove 114 during rotation, ensuring the stable rotation of the adjusting component 13.

[0081] Specifically, the distance between the rotating end 131 and the side wall of the clearance groove 114 is b, b≥5mm. This can prevent the rotating end 131 from interfering with the side wall of the clearance groove 114 during rotation, thus ensuring the stable rotation operation of the adjusting component 13.

[0082] Specifically, the minimum distance between the free end 132 and the groove wall of the clearance groove 114 is c, where c ≥ 5 mm. This avoids interference between the free end 132 and the groove wall of the clearance groove 114 (including the bottom wall and side wall) during the rotation of the free end 132 relative to the rotating end 131, thus ensuring the stable rotation operation of the adjusting member 13.

[0083] Specifically, the rotation angle of the adjusting member 13 is α, where 15° ≤ α ≤ 75°. When the rotation angle α of the adjusting member 13 is less than 15°, it is not convenient to control the adjusting member 13 to rotate within a small angle range. In addition, if the rotation angle α is too small, the distance between the airflow through the free end 132 and the groove wall of the clearance groove 114 will be reduced, thereby reducing resistance. When the rotation angle is greater than 75°, it will be difficult for the airflow to enter the gap through the clearance groove 114 and circle around to the rear of the adjusting member 13 to form a low-pressure vortex, causing the airflow to flow more through the gap between the adjusting member 13 and the fan blade 12, thereby reducing resistance.

[0084] Specifically, an overlapping step 1143 is provided at the clearance groove 114, which is adapted to the end of the adjusting member 13; when the adjusting member 13 is in the closed position, the adjusting member 13 overlaps at the overlapping step 1143. In this way, the positional stability of the adjusting member 13 in the closed position can be improved, and the adjusting member 13 can be better spliced ​​and matched with the volute structure 11.

[0085] In this embodiment, the volute structure 11 includes a first volute component 115 and a second volute component 116. The volute portion of the first volute component 115 and the volute tongue portion of the second volute component 116 form a first communication port 111, and the volute portion of the second volute component 116 and the volute tongue portion of the first volute component 115 form a second communication port 112. There are at least two clearance grooves 114, one of which is disposed on the volute portion of the first volute component 115 and the other on the volute portion of the second volute component 116. There are at least two adjusting members 13, each corresponding to one of the at least two clearance grooves 114, and each adjusting member 13 is movably disposed at its corresponding clearance groove 114. With this structural arrangement, it is easy to coordinate the adjustment member 13 located at the first volute 115 and the adjustment member 13 located at the second volute 116 to better adjust the airflow in the air cavity 113, thereby changing the position of the eccentric vortex 60 in the air cavity 113 and thus facilitating the change of the airflow direction in and out of the air cavity 113.

[0086] Specifically, the first connecting port 111 is located above the second connecting port 112, the volute portion of the first volute component 115 is located above the volute tongue portion of the first volute component 115, and the volute tongue portion of the second volute component 116 is located above the volute portion of the second volute component 116. The volute portion of the first volute component 115 can also be referred to as the first volute portion 1151, and the volute tongue portion of the first volute component 115 can also be referred to as the first volute tongue portion 1152, and the first volute portion 1151 and the first volute tongue portion 1152 are connected. The volute portion of the second volute component 116 can also be referred to as the second volute portion 1161, and the volute tongue portion of the second volute component 116 can also be referred to as the second volute tongue portion 1162, and the second volute portion 1161 and the second volute tongue portion 1162 are connected.

[0087] In this embodiment, when one of the at least two adjusting members 13 is in the closed position, the other of the at least two adjusting members 13 is in the open position. Thus, when the adjusting member 13 located at the first volute 115 is in the closed position, the adjusting member 13 located at the second volute 116 is in the open position, allowing air to enter the air chamber 113 through one of the first connecting port 111 and the second connecting port 112, and exit through the other; when the adjusting member 13 located at the first volute 115 is in the open position, the adjusting member 13 located at the second volute 116 is in the closed position, allowing air to enter the air chamber 113 through the other of the first connecting port 111 and the second connecting port 112, and exit through the other.

[0088] Specifically, there is a pair of regulating members 13, which control the flow direction of the airflow in the air cavity 113 through their mutual cooperation. When one regulating member 13 is in the open position, it can increase the flow resistance on that side, and the resistance is greater than that of the other regulating member 13 in the closed position on the opposite side. The airflow will flow out from the opposite side, thereby forming an eccentric vortex 60 at the regulating member 13 in the open position.

[0089] Specifically, the first connecting port 111 is located above the second connecting port 112. When the adjusting member 13 at the first volute 115 is in the closed position and the adjusting member 13 at the second volute 116 is in the open position, the eccentric vortex 60 is located near the adjusting member 13 at the second volute 116, with air exiting through the first connecting port 111 and air entering through the second connecting port 112, corresponding to an upward air outlet. When the adjusting member 13 at the first volute 115 is in the open position and the adjusting member 13 at the second volute 116 is in the closed position, the eccentric vortex 60 is located near the adjusting member 13 at the first volute 115, with air entering through the first connecting port 111 and air exiting through the second connecting port 112, corresponding to a downward air outlet.

[0090] Specifically, when the adjusting member 13 corresponding to the clearance groove 114 on the first volute 115 is in the closed position, the adjusting member 13 blocks the end of the clearance groove 114 on the first volute 115 near the volute tongue. In this way, airflow can be effectively prevented from entering the clearance groove 114, and the influence of the adjusting member 13 on the airflow when in the closed position can be better avoided.

[0091] Specifically, when the adjusting member 13 corresponding to the clearance groove 114 on the first volute 115 is in the closed position, the side of the adjusting member 13 near the fan blade 12 is adapted to the profile of the volute portion of the first volute 115. This facilitates a better connection between the side of the adjusting member 13 near the fan blade 12 and the volute portion of the first volute 115 to form a complete volute profile structure, thereby better approximating the guiding effect of a normal, complete volute on airflow and avoiding the influence of the adjusting member 13 on airflow when in the closed position.

[0092] Specifically, the inclination of the side wall of the clearance groove 114 near the volute tongue of the first volute 115 is less than the inclination of the side wall of the clearance groove 114 near the volute portion of the first volute 115. This structural arrangement allows the airflow to flow smoothly out through the side of the clearance groove 114 near the volute tongue after entering the clearance groove 114 via the side wall near the volute portion of the first volute 115. This facilitates smooth airflow on both sides of the adjusting member 13, promoting airflow guidance and smooth flow. A certain pressure difference exists on both sides of the adjusting member 13, facilitating the adjustment of the position of the eccentric vortex 60 and further facilitating changes in the inlet and outlet airflow directions.

[0093] It should be noted that "the inclination of the side wall of the clearance groove 114 near the tongue of the first volute 115" can be understood as the inclination angle of the side wall of the clearance groove 114 near the tongue of the first volute 115 relative to the bottom wall of the clearance groove 114; and "the inclination of the side wall of the clearance groove 114 near the volute portion of the first volute 115" can be understood as the inclination angle of the side wall of the clearance groove 114 near the volute portion of the first volute 115 relative to the bottom wall of the clearance groove 114.

[0094] Specifically, when the adjusting member 13 corresponding to the clearance groove 114 on the second volute 116 is in the closed position, the adjusting member 13 blocks the end of the clearance groove 114 on the second volute 116 near the volute tongue. In this way, airflow can be effectively prevented from entering the clearance groove 114, and the influence of the adjusting member 13 on the airflow when in the closed position can be better avoided.

[0095] Specifically, when the adjusting member 13 corresponding to the clearance groove 114 on the second volute 116 is in the closed position, the side of the adjusting member 13 near the fan blade 12 is adapted to the profile of the volute portion of the second volute 116. This facilitates a better connection between the side of the adjusting member 13 near the fan blade 12 and the volute portion of the second volute 116 to form a complete volute profile structure, thereby better approximating the guiding effect of a normal, complete volute on airflow and avoiding the influence of the adjusting member 13 on airflow when in the closed position.

[0096] Specifically, the inclination of the side wall of the clearance groove 114 near the volute tongue of the second volute 116 is less than the inclination of the side wall of the clearance groove 114 near the volute portion of the second volute 116. This structural arrangement allows the airflow to flow smoothly out through the side of the clearance groove 114 near the volute tongue after entering the clearance groove 114 via the side wall near the volute portion of the second volute 116. This facilitates smooth airflow through both sides of the adjusting member 13, promoting airflow guidance and smooth flow. A certain pressure difference exists on both sides of the adjusting member 13, facilitating the adjustment of the position of the eccentric vortex 60 and further facilitating changes in the inlet and outlet airflow directions.

[0097] In this embodiment, the main component of the gas flow in the cross-flow fan blades is the eccentric vortex 60 located inside the impeller. The center position and strength of the eccentric vortex 60 are key factors affecting the performance of the cross-flow fan. Therefore, forming a stable eccentric vortex 60 is crucial for the stable airflow output of the reversible duct. The indoor unit of the air conditioner in this embodiment also includes a heat exchanger 40, which is located above the fan blades 12. An auxiliary heating structure 50 is provided below the heat exchanger 40, which can specifically be an electric auxiliary heating device. The adjusting member 13 can be a rotating plate structure. The adjusting member 13 located at the first volute member 115 can also be called the first rotating plate, and the adjusting member 13 located at the second volute member 116 can also be called the second rotating plate. The clearance groove 114 located at the first volute member 115 can also be called the first rotating plate groove, and the clearance groove 114 located at the second volute member 116 can also be called the second rotating plate groove.

[0098] Analysis of the reversible air supply principle in this application:

[0099] Figure 2 shows a schematic diagram of the upward air supply, with the second rotating plate open and the first rotating plate closed. During the rotation of the fan blade 12, the airflow is thrown out of the fan blade 12. The airflow thrown out of the fan blade 12 enters the volute. On the first volute 115, due to the closed first rotating plate, the airflow resistance is small, and the airflow can be smoothly delivered to the upwind outlet 21. On the second volute 116, due to the open second rotating plate, the airflow bypasses the rotating plate and passes through the rotating plate groove to the rear of the second rotating plate, forming a low-pressure area behind the second rotating plate. A pressure difference is formed between the windward and leeward sides of the second rotating plate, thus the second rotating plate is subjected to the force of the airflow. The force generated by the airflow on the second rotating plate reacts on the airflow, increasing the flow resistance on that side, and the airflow cannot smoothly reach the downwind outlet 22. The impeller continuously throws airflow outwards, creating a low-pressure environment inside. This necessitates a constant influx of gas. The final location and destination of this airflow are determined by the flow resistance on both sides. Since the airflow towards the upper inlet 21 flows more smoothly, it is continuously output to the upper inlet 21, transforming it into an outlet. Conversely, the airflow towards the lower inlet 22 encounters resistance and cannot flow smoothly outwards. The airflow thrown outwards from the impeller is then replenished by the lower inlet 22, making it an inlet and continuously supplying airflow into the impeller. Thus, the eccentric vortex 60 is formed at the second volute tongue 1162 above the second rotating plate.

[0100] Similarly, we can understand the formation process of the lower air outlet shown in Figure 3 and the reason why the eccentric vortex 60 is formed near the first volute tongue on the lower side.

[0101] The function of the first rotating plate is that, when the first rotating plate is extended, it can block the airflow on that side, causing the airflow to form an eccentric vortex 60 on that side. When the first rotating plate is closed, the leeward profile of the first rotating plate can fit well with the volute profile on that side.

[0102] The function of the second rotating plate is that, when the second rotating plate is extended, it can block the airflow on that side, causing the airflow to form an eccentric vortex 60 on that side. When the second rotating plate is closed, the leeward profile of the second rotating plate can fit well with the volute profile on that side.

[0103] The function of the clearance groove 114 is as follows: When the adjusting member 13 is rotated out to the open position, there is a gap between the adjusting member 13 and the clearance groove 114. The airflow flows through the gap to the rear of the clearance groove 114, creating a pressure difference on both sides of the adjusting member 13, thereby enhancing the drag-increasing effect of the adjusting member 13. When the adjusting member 13 is in the closed position, the gap between the adjusting member 13 and the clearance groove 114 is closed, and the airflow cannot enter the gap between the adjusting member 13 and the clearance groove 114.

[0104] Figure 5 shows the specific structure of the adjusting member 13 and the clearance groove 114. The adjusting member 13 rotates around its rotation axis. The angle difference between the adjusting member 13 when it is rotated out (in the open position) and closed (in the closed position) is α. When rotated out, the closest distance between the adjusting member 13 and the center of the fan blade 12 is R0. The difference between this distance and the outer radius R2 of the fan blade 12 is the gap d0. This gap is necessary to prevent the fan blade 12 from running too much during manufacturing or assembly and interfering with the adjusting member 13.

[0105] Specifically, 4mm≤d0≤7mm. When d0 is too small, it is easy to interfere with the fan blade 12 and increase the noise. When d0 is too large, the gap is too large, the airflow through the gap increases, and thus the resistance effect provided by the regulating component 13 is reduced.

[0106] When the adjusting member 13 is in the closed position, the end of the adjusting member 13 is in contact with the volute structure 11. When the adjusting member 13 is in the open position, the minimum gap between the end of the adjusting member 13 and the volute is c, and the two positions of the root of the adjusting member 13 and the clearance groove 114 ensure gaps a and b.

[0107] Embodiment 2 of this application provides an indoor air conditioning unit, including: the aforementioned air duct component 10 and an indoor unit housing 20. The air duct component 10 is disposed inside the indoor unit housing 20. The indoor unit housing 20 has an upper air outlet 21 and a lower air outlet 22 spaced apart. The upper air outlet 21 is located on the side of the lower air outlet 22 near the first connecting port 111, and the lower air outlet 22 is located on the side of the upper air outlet 21 near the second connecting port 112. This facilitates air outlet 21 for air discharge and lower air outlet 22 for air intake, or vice versa.

[0108] In this embodiment, the indoor unit of the air conditioner also includes an upper air guide plate 31 and a lower air guide plate 32. The upper air guide plate 31 is rotatably disposed at the upper air outlet 21. The lower air guide plate 32 is rotatably disposed at the lower air outlet 22. This facilitates the guidance of airflow from the upper air outlet 21 and the lower air outlet 22, respectively.

[0109] Specifically, the upper air guide plate 31 can be set to one, two or more, and the lower air guide plate 32 can be set to one, two or more.

[0110] Embodiment 3 of this application provides a control method applicable to the aforementioned air conditioning indoor unit. The control method includes: acquiring the air outlet mode of the air conditioning indoor unit; adjusting the adjusting component 13 of the air duct component 10 of the air conditioning indoor unit according to the air outlet mode; wherein the air outlet mode includes an upper air outlet mode and a lower air outlet mode. This facilitates smooth switching of the adjustment of the air duct component 10 to either the upper or lower air outlet mode.

[0111] In this embodiment, the air duct component 10 is the air duct component 10 provided above. According to the air outlet mode of the indoor unit, the adjusting member 13 of the air duct component 10 of the indoor unit is adjusted, including: when the indoor unit is in the upper air outlet mode, controlling at least one of the at least two adjusting members 13 to be in the closed position and the other of the at least two adjusting members 13 to be in the open position; when the indoor unit is in the lower air outlet mode, controlling the other of the at least two adjusting members 13 to be in the closed position and the other of the at least two adjusting members 13 to be in the open position. This facilitates smooth switching between air outlet modes.

[0112] Specifically, the indoor unit of the air conditioner is the aforementioned indoor unit. When the indoor unit is in the top air outlet mode, the control method further includes: controlling the upper air guide plate 31 of the indoor unit to rotate to a first preset angle A1, the first preset angle being less than the maximum opening angle A0 of the upper air guide plate 31; controlling the lower air guide plate 32 to rotate to the maximum opening angle B0 of the lower air guide plate 32; acquiring the operating status of the fan blades 12 of the air duct component 10; and adjusting the rotation angle of the upper air guide plate 31 according to the operating status of the fan blades 12. This increases the resistance of the upper air outlet 21, facilitating smooth air intake from the lower air outlet 22 and air outlet from the upper air outlet 21, thereby improving the stability of the air supply direction when starting the indoor unit.

[0113] In this embodiment, when the indoor unit of the air conditioner is in the down-discharge mode, the control method further includes: controlling the upper air guide plate 31 of the indoor unit to rotate to the maximum opening angle A0 of the upper air guide plate 31, and controlling the lower air guide plate 32 to rotate to a second preset angle B1, where the second preset angle B1 is less than the maximum opening angle B0 of the lower air guide plate 32; acquiring the operating status of the fan blades 12 of the duct component 10; and adjusting the rotation angle of the lower air guide plate 32 according to the operating status of the fan blades 12. This facilitates increasing the resistance of the lower air outlet 22, ensuring smooth airflow from the lower air outlet 22 and airflow from the upper air outlet 21, and improving the stability of the airflow direction when starting the indoor unit of the air conditioner.

[0114] Specifically, the rotation angle of the upper air guide plate 31 is adjusted according to the operation of the fan blade 12, including: when the operating voltage of the fan blade 12 is stable for a duration greater than or equal to t0, the upper air guide plate 31 is controlled to rotate from a first preset angle A1 to the maximum opening angle A0 of the upper air guide plate 31. This facilitates the stabilization of the position of the eccentric vortex 60 in the air cavity 113, and after stabilization, the upper air guide plate 31 is fully opened to ensure the smooth start-up and stable operation of the cooling mode.

[0115] Specifically, the rotation angle of the lower air guide plate 32 is adjusted according to the operation of the fan blade 12, including: when the operating voltage of the fan blade 12 is stable for a duration greater than or equal to t0, the lower air guide plate 32 is controlled to rotate from the second preset angle B1 to the maximum opening angle A0 of the lower air guide plate 32. This facilitates the stabilization of the position of the eccentric vortex 60 in the air cavity 113, and after stabilization, the lower air guide plate 32 is fully opened to ensure the smooth start-up and stable operation of the cooling mode.

[0116] Specifically, the indoor unit of the air conditioner is the indoor unit of the air conditioner provided above.

[0117] When the indoor unit of the air conditioner is in the top air outlet mode, after controlling at least one of the two adjusting components 13 to be in the closed position and the other of the two adjusting components 13 to be in the open position, the control method further includes: controlling the upper air guide plate 31 of the indoor unit to rotate to a first preset angle A1, the first preset angle being less than the maximum opening angle A0 of the upper air guide plate 31; controlling the lower air guide plate 32 to rotate to the maximum opening angle B0 of the lower air guide plate 32; acquiring the operating status of the fan blades 12 of the air duct component 10; and adjusting the rotation angle of the upper air guide plate 31 according to the operating status of the fan blades 12. In this way, the position of the eccentric vortex 60 in the air cavity 113 can be made more stable, so as to stably switch to the top air outlet mode.

[0118] When the indoor unit of the air conditioner is in the downward air outlet mode, after controlling at least one of the two adjusting components 13 to be in the closed position and one of the two adjusting components 13 to be in the open position, the control method further includes: controlling the upper air guide plate 31 of the indoor unit to rotate to the maximum opening angle A0 of the upper air guide plate 31, and controlling the lower air guide plate 32 to rotate to a second preset angle B1, the second preset angle B1 being less than the maximum opening angle B0 of the lower air guide plate 32; acquiring the operating status of the fan blades 12 of the air duct component 10; and adjusting the rotation angle of the lower air guide plate 32 according to the operating status of the fan blades 12. In this way, the position of the eccentric vortex 60 in the air cavity 113 can be made more stable, so as to facilitate a stable switch to the downward air outlet mode.

[0119] Specifically, the opening angle range of A0 is 60–75°. Specifically, the lower air guide plate 32 can deliver air vertically downwards, and the opening angle of B0 is 90°.

[0120] During startup, the airflow direction of the fan blade 12 (mainly a cross-flow fan blade in this embodiment) is determined by the inlet and outlet resistances. When the difference between the inlet and outlet resistances is small, the airflow is prone to fluctuations or reverse flow. Generally, the outlet resistance should be as large as possible as the inlet resistance. For this reversible air supply model, further constraints are needed on its vertical air supply stability.

[0121] Once the airflow at fan blade 12 stabilizes, its outlet direction is unlikely to change. Therefore, the inlet and outlet resistances are constrained before the fan starts. Figures 10 and 11 show the downward airflow diagram. Reducing the opening angle of the lower guide vane during downward airflow increases the resistance of the downward airflow outlet 22. Similarly, as shown in Figures 8 and 9, reducing the opening angle of the guide vane at the upper airflow outlet 21 increases the resistance of the upper airflow outlet 21. This improves the stability of the reversible air supply model during startup and prevents reverse airflow.

[0122] The following is a specific control method:

[0123] As shown in Figure 12, the user or system automatically determines the current mode of the air conditioner.

[0124] The maximum opening degree of the lower air guide plate 32 is B0, and the maximum opening degree of the upper air guide plate 31 is A0. The upper air guide plate 31 and the lower air guide plate 32 can be controlled independently.

[0125] When in cooling mode, the airflow is upward, the first rotating plate is open, and the second rotating plate is closed.

[0126] The lower air guide plate 32 is opened to its maximum opening degree B0, and the upper air guide plate 31 is opened to A1, where A1 is between 0 and A0, to increase the resistance of the upper air outlet 21. The motor is started, and when the motor voltage fluctuation is small and stabilizes for a time t, it indicates that the eccentric vortex 60 has stabilized, that is, the upper air guide plate is fully opened, and the cooling mode is activated.

[0127] When in heating mode, the air outlet is downward, the first rotating plate is closed, and the second rotating plate is open.

[0128] The lower air guide plate 32 is opened to an opening degree B1, where B1 is between 0 and B0. The upper air guide plate 31 is opened to A0 to increase the resistance of the lower air outlet 22. The motor is started. When the motor voltage fluctuation is small and stabilizes for a time t, it indicates that the eccentric vortex 60 has stabilized, that is, the upper air guide plate is fully opened, and the cooling mode is activated.

[0129] After the mode is started, other control methods can be started, such as up-and-down airflow or left-and-right airflow.

[0130] As can be seen from the above description, the embodiments of this application achieve the following technical effects: simple structure and easy to switch air outlet modes smoothly.

[0131] 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.

[0132] 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.

[0133] 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.

[0134] 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.

[0135] 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.

[0136] 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 volute structure (11) and the fan blade (12) are provided. The volute structure (11) forms a first communication port (111), a second communication port (112) and a wind cavity (113) that communicates with both the first communication port (111) and the second communication port (112). The fan blade (12) is installed in the wind cavity (113). The volute structure (11) is provided with a clearance groove (114). An adjusting member (13) is movably disposed at the clearance groove (114), the adjusting member (13) having a closed position that overlaps at least a portion of the clearance groove (114) to block the airflow gap between the adjusting member (13) and the clearance groove (114) and an open position that extends out of at least a portion of the clearance groove (114). When the adjusting member (13) is in the closed position, the side of the adjusting member (13) near the fan blade (12) is adapted to the shape of the volute structure (11); when the adjusting member (13) is in the open position, at least a portion of the fan blade (12) and the clearance groove (114) are spaced apart from the adjusting member (13) so that the airflow passes through both sides of the adjusting member (13) to change the inlet and outlet airflow direction of the air cavity.

2. The air duct component of claim 1, wherein, Along the direction of airflow, the clearance groove (114) has a first end (1141) and a second end (1142) disposed opposite to each other; When the adjusting member (13) is in the closed position, the adjusting member (13) overlaps one of the first end (1141) and the second end (1142), and the adjusting member (13) is spaced apart from the other of the first end (1141) and the second end (1142); or, When the adjusting member (13) is in the closed position, the adjusting member (13) overlaps the first end (1141) and the second end (1142); or, When the adjusting member (13) is in the closed position, the adjusting member (13) blocks the opening of the relief groove (114).

3. The air duct component of claim 2, wherein, The adjusting member (13) is rotatably disposed at the clearance groove (114).

4. The air duct component of claim 3, wherein, The adjusting member (13) has a rotating end (131) and a free end (132) disposed opposite to each other, the free end (132) being rotatably disposed relative to the rotating end (131); Wherein, the distance between the rotating end (131) and the bottom wall of the clearance groove (114) is a, a≥5mm; and / or, The distance between the rotating end (131) and the sidewall of the clearance groove (114) is b, where b ≥ 5 mm; and / or, The minimum distance between the free end (132) and the groove wall of the clearance groove (114) is c, where c ≥ 5 mm; and / or, The rotation angle of the adjusting member (13) is α, where 15°≤α≤75°.

5. The air duct component of claim 1, wherein, An overlapping step (1143) is provided at the avoidance groove (114), and the overlapping step (1143) is adapted to the end of the adjusting member (13); when the adjusting member (13) is in the closed position, the adjusting member (13) overlaps at the overlapping step (1143).

6. The air duct component of claim 1, wherein, The volute structure (11) includes a first volute component (115) and a second volute component (116). The volute portion of the first volute component (115) and the volute tongue portion of the second volute component (116) form the first communication port (111), and the volute portion of the second volute component (116) and the volute tongue portion of the first volute component (115) form the second communication port (112). There are at least two clearance grooves (114), one of which is disposed on the volute portion of the first volute component (115) and the other is disposed on the volute portion of the second volute component (116). There are at least two adjustment members (13), and the at least two adjustment members (13) are disposed in a one-to-one correspondence with the at least two clearance grooves (114). Each adjustment member (13) is movably disposed at the corresponding clearance groove (114).

7. The air duct component of claim 6, wherein, When one of the at least two adjusting members (13) is in the closed position, the other of the at least two adjusting members (13) is in the open position.

8. The air duct component according to claim 6, characterized in that, When the adjusting member (13) corresponding to the clearance groove (114) on the first volute (115) is in the closed position, the adjusting member (13) blocks one end of the clearance groove (114) on the first volute (115) near the volute tongue of the first volute (115); and / or, When the adjusting member (13) corresponding to the clearance groove (114) on the first volute (115) is in the closed position, the side of the adjusting member (13) near the fan blade (12) is adapted to the profile of the volute portion of the first volute (115); and / or, The inclination of the side wall of the clearance groove (114) provided on the first volute (115) near the volute tongue is less than the inclination of the side wall of the clearance groove (114) near the volute portion of the first volute (115).

9. The air duct component according to claim 6, characterized in that, When the adjusting member (13) corresponding to the clearance groove (114) on the second volute (116) is in the closed position, the adjusting member (13) blocks one end of the clearance groove (114) on the second volute (116) near the volute tongue of the second volute (116); and / or, When the adjusting member (13) corresponding to the clearance groove (114) on the second volute (116) is in the closed position, the side of the adjusting member (13) near the fan blade (12) is adapted to the profile of the volute portion of the second volute (116); and / or, The inclination of the side wall of the clearance groove (114) provided on the second volute (116) near the volute tongue is less than the inclination of the side wall of the clearance groove (114) near the volute portion of the second volute (116).

10. An air conditioner indoor unit characterized by comprising: include: The air duct component according to any one of claims 1 to 9; The indoor unit housing (20) has the air duct component disposed inside the indoor unit housing (20). The indoor unit housing (20) has an upper air vent (21) and a lower air vent (22) spaced apart. The upper air vent (21) is located on the side of the lower air vent (22) closer to the first connecting port (111), and the lower air vent (22) is located on the side of the upper air vent (21) closer to the second connecting port (112). 11.The indoor unit of the air conditioner of claim 10, characterized in that, The indoor unit of the air conditioner also includes: The upper air guide plate (31) is rotatably disposed at the upper air outlet (21); The lower air guide plate (32) is rotatably disposed at the lower air outlet (22).

12. A control method characterized by, The control method is applicable to the air conditioner indoor unit as described in claim 10 or 11, and the control method includes: Obtain the air outlet mode of the indoor unit of the air conditioner; Adjust the adjusting components of the air duct of the indoor unit according to the air outlet mode of the indoor unit; The air outlet modes include an upper air outlet mode and a lower air outlet mode.

13. The control method according to claim 12, characterized by, The air duct component is the air duct component as described in claim 5; the step of adjusting the adjusting component of the air duct component of the air conditioner indoor unit according to the air outlet mode of the air conditioner indoor unit includes: When the indoor unit of the air conditioner is in the upward air outlet mode, at least one of the two regulating components is controlled to be in the closed position and the other of the two regulating components is controlled to be in the open position; When the indoor unit of the air conditioner is in the down-ventilation mode, it controls at least one of the two regulating components to be in the closed position and at least one of the two regulating components to be in the open position.

14. The control method according to claim 13, characterized by, The air conditioner indoor unit is the air conditioner indoor unit as described in claim 10; When the indoor unit of the air conditioner is in the upward air outlet mode, the control method further includes: Control the upper air guide plate of the indoor air conditioner to rotate to a first preset angle A1, where the first preset angle is less than the maximum opening angle A0 of the upper air guide plate of the indoor air conditioner; control the lower air guide plate of the indoor air conditioner to rotate to the maximum opening angle B0 of the lower air guide plate; obtain the operating status of the fan blades of the air duct component; adjust the rotation angle of the upper air guide plate according to the operating status of the fan blades; When the indoor unit of the air conditioner is in the down-discharge mode, the control method further includes: Control the upper air guide plate of the indoor unit of the air conditioner to rotate to the maximum opening angle A0 of the upper air guide plate, and control the lower air guide plate to rotate to the second preset angle B1, the second preset angle B1 being less than the maximum opening angle B0 of the lower air guide plate; obtain the operating status of the fan blades of the air duct component; and adjust the rotation angle of the lower air guide plate according to the operating status of the fan blades.

15. The control method according to claim 14, characterized in that, The adjustment of the rotation angle of the upper guide plate according to the operation of the fan blades includes: when the operating voltage of the fan blades is stable for a duration greater than or equal to t0, controlling the upper guide plate to rotate from the first preset angle A1 to the maximum opening angle A0 of the upper guide plate; and / or, The step of adjusting the rotation angle of the lower guide plate according to the operation of the fan blade includes: when the operating voltage of the fan blade is stable for a duration greater than or equal to t0, controlling the lower guide plate to rotate from the second preset angle B1 to the maximum opening angle A0 of the lower guide plate.

16. The control method according to claim 13, characterized by, The air conditioner indoor unit is the air conditioner indoor unit as described in claim 10; Wherein, when the indoor unit of the air conditioner is in the upward air outlet mode, after controlling at least one of the at least two adjusting components to be in the closed position and the other of the at least two adjusting components to be in the open position, the control method further includes: controlling the upper air guide plate of the indoor unit to rotate to a first preset angle A1, the first preset angle being less than the maximum opening angle A0 of the upper air guide plate; controlling the lower air guide plate of the indoor unit to rotate to the maximum opening angle B0 of the lower air guide plate; acquiring the operating status of the fan blades of the air duct component; adjusting the rotation angle of the upper air guide plate according to the operating status of the fan blades; and / or, When the indoor unit of the air conditioner is in the downward air outlet mode, after controlling at least one of the two adjusting components to be in the closed position and one of the at least two adjusting components to be in the open position, the control method further includes: controlling the upper air guide plate of the indoor unit to rotate to the maximum opening angle A0 of the upper air guide plate, controlling the lower air guide plate to rotate to a second preset angle B1, the second preset angle B1 being less than the maximum opening angle B0 of the lower air guide plate; acquiring the operating status of the fan blades of the air duct component; and adjusting the rotation angle of the lower air guide plate according to the operating status of the fan blades.

Images