Wind deflector mechanism, control method and cabinet air conditioner indoor unit

Abstract

The present invention provides a windshield mechanism, a control method and a cabinet air-conditioning indoor unit; the windshield mechanism includes a mounting base, a windshield, an intermediate piece and a positioning piece; the mounting base includes a plate body, the windshield is arranged on one side of the plate body and is located in the air duct and has a plurality of working positions; the intermediate piece is arranged on the other side of the plate body and the intermediate piece and the windshield can be synchronously rotatably connected to the plate body; the intermediate piece forms a plurality of first limiting structures; the positioning piece is slidably arranged on the plate body and the positioning piece and the intermediate piece are located on the same side of the plate body; the positioning piece forms a second limiting structure; when the windshield and the intermediate piece rotate synchronously and the windshield is in any working position, the positioning piece slides along the plate body and the second limiting structure cooperates with the corresponding first limiting structure, so that the windshield can be fixed at the working position; the structure is simple, and when the air flow flows through the windshield, the windshield will not vibrate or generate noise, and the air output of the air duct can be adjusted.

Description

Technical Field

[0001] The present invention belongs to the technical field of air treatment equipment, and in particular relates to a windshield mechanism, a control method and a cabinet-type air-conditioning indoor unit. Background Art

[0002] Existing ventilation equipment is formed with multiple air outlet ducts, and wind shields are arranged in the air outlet ducts. According to the air outlet needs, the wind shields are controlled to rotate to open or close the corresponding air outlet ducts, so that air outlet in different directions can be achieved; but due to the lack of necessary limiting structures, the wind shields cannot be stably fixed in the air outlet ducts. When the air flow passes through the wind shields, it will periodically hit the wind shields, causing the wind shields to vibrate and generate noise; in addition, the adjustable range of the inclination angle of the wind shield is narrow, which makes it impossible to adjust the air outlet volume over a large range, resulting in a poor user experience. Summary of the Invention

[0003] In view of this, the present invention provides a windshield mechanism, a control method and a cabinet air conditioner indoor unit to solve the problems of the windshield in existing ventilation equipment being loosely fixed, airflow easily vibrating and generating noise when passing through the windshield, and the inability to adjust the air volume over a large range.

[0004] The present invention provides a windshield mechanism for a ventilation device, wherein the ventilation device is formed with an air duct; the windshield mechanism comprises:

[0005] The mounting base includes a plate body;

[0006] A windshield and an intermediate member, wherein the windshield is arranged on one side of the plate body and is located in the air duct; the windshield has multiple working positions, and when the windshield is in different working positions, the inclination angle of the windshield is different; the intermediate member is arranged on the other side of the plate body, and the intermediate member and the windshield are connected to the plate body for synchronous rotation; the intermediate member is formed with a plurality of first limiting structures, and the plurality of first limiting structures are sequentially spaced along the rotation direction of the intermediate member; the plurality of first limiting structures correspond to the plurality of working positions;

[0007] a positioning member slidably disposed on the plate body and located on the same side of the plate body as the intermediate member; the positioning member is formed with a second limiting structure;

[0008] When the windshield rotates synchronously with the middle piece and is in any of the working positions, the positioning piece slides along the plate body and the second limiting structure cooperates with the corresponding first limiting structure, so that the windshield can be fixed at the working position.

[0009] Further optionally, the plate body is formed with a plate body axis hole; the wind shield is provided with a rotating shaft, and a part of the rotating shaft close to the middle piece is rotatably arranged in the plate body axis hole and the part is connected to the middle piece; the middle piece is a fan-shaped structure and the outer wall of the middle piece forms a limiting portion, and the limiting portion forms a plurality of the first limiting structures; each of the first limiting structures is a limiting groove and extends radially along the rotating shaft.

[0010] Further optionally, the outer side wall of the intermediate member is further formed with a transmission portion, the transmission portion and the limiting portion are sequentially arranged along the circumference of the intermediate member; the transmission portion is formed with a plurality of external teeth, and the plurality of external teeth are sequentially spaced along the rotation direction of the intermediate member;

[0011] The windshield mechanism further includes a first gear, which is rotatably disposed on the plate body and is located on the same side of the plate body as the intermediate member; the first gear is meshed with the external teeth;

[0012] The first gear rotates to cause the intermediate component and the windshield to rotate synchronously.

[0013] Further optionally, the positioning member is a strip-shaped structure and the second limiting structure is formed at one end of the positioning member; the second limiting structure is a limiting block; when the limiting block is embedded in the limiting groove, the wind shield can be fixed at the corresponding working position.

[0014] Further optionally, a rack is formed on one side of the positioning member; the windshield mechanism further includes a second wheel, the second wheel is rotatably disposed on the plate body and the second wheel and the intermediate member are located on the same side of the plate body; the second wheel is engaged with the rack;

[0015] The second wheel rotates to make the positioning member slide along the plate body.

[0016] Further optionally, the mounting base further comprises a frame, the frame being arranged on the plate and the frame and the wind shield being located on the same side of the plate; the frame being located in the air duct and having a frame shaft hole formed therein; the frame shaft hole being in communication with the plate shaft hole and being coaxially arranged;

[0017] A portion of the rotating shaft close to the windshield is rotatably arranged in the shaft hole of the frame.

[0018] Further optionally, the frame is further formed with ventilation holes, the ventilation holes are located on the side of the frame shaft hole; the ventilation holes are connected to the air ducts on both sides of the windshield;

[0019] When the wind shield is in the first working position, the wind shield closes the ventilation holes; when the wind shield is in the second working position, the third working position, or the fourth working position, the wind shield partially opens the ventilation holes; when the wind shield is in the fifth working position, the wind shield fully opens the ventilation holes.

[0020] The present invention further provides a method for controlling a windshield mechanism according to any one of the above items, the method comprising:

[0021] Determining whether the current working position of the windshield is consistent with the target working position;

[0022] If not, controlling the positioning member to slide so that the second limiting structure is separated from the first limiting structure;

[0023] Controlling the windshield to rotate to a target working position;

[0024] The positioning member is controlled to slide so that the second limiting structure cooperates with the first limiting structure.

[0025] Further optionally, before determining whether the current working position of the windshield is consistent with the target working position, the method further includes:

[0026] When the ventilation device is running, obtaining the current air output volume and the target air output volume of the air duct;

[0027] Calculating the difference between the current air flow rate of the air duct and the target air flow rate;

[0028] Determining whether the air volume difference is within a preset air volume difference range;

[0029] When the air volume difference is not within the preset air volume difference range, the current working position of the wind shield is inconsistent with the target working position.

[0030] Further optionally, the air volume difference of the air duct includes a plurality of preset large ranges of air volume difference; and controlling the wind shield to rotate to the target working position includes:

[0031] Determining a preset maximum air volume difference range within which the air volume difference lies;

[0032] determining a target rotation angle of the wind shield according to a preset air volume difference range in which the air volume difference lies;

[0033] The windshield is controlled to rotate to the target rotation angle so that the windshield is located at the target working position.

[0034] Further optionally, if yes, the positions of the positioning member and the windshield are controlled to remain unchanged.

[0035] The present invention further provides a cabinet-type air-conditioning indoor unit, comprising the wind deflector mechanism described in any one of the above items or a control method using the wind deflector mechanism described in any one of the above items;

[0036] The cabinet air conditioner indoor unit includes a fan assembly, which includes a volute and a volute cover; the volute and the volute cover are buckled together to form a lower air supply duct; the wind shield is rotatably arranged in the lower air supply duct.

[0037] Further optionally, the volute and the volute cover are further formed with an upper air supply duct and a fan chamber, wherein the upper air supply duct, the fan chamber and the lower air supply duct are sequentially arranged and connected along the height direction of the volute and the volute cover; the fan chamber is formed with a first air supply inlet and a second air supply inlet;

[0038] The cabinet air conditioner indoor unit further includes a shell, the shell being formed with an air inlet, an upper air outlet, and a lower air outlet; a first air inlet duct is formed between the air inlet and the first air supply inlet, the first air supply inlet being connected to the first air inlet duct and the fan chamber; a second air inlet duct is formed between the air inlet and the second air supply inlet, the second air supply inlet being connected to the second air inlet duct and the fan chamber; the upper air outlet is connected to the air outlet end of the upper air supply duct, and the lower air outlet is connected to the air outlet end of the lower air supply duct;

[0039] A portion of the indoor wind enters the fan blade cavity through the air inlet, the first air inlet duct and the first air supply inlet; another portion of the indoor wind enters the fan blade cavity through the air inlet, the second air inlet duct and the second air supply inlet; the wind in the fan blade cavity is discharged through the upper air supply duct and the upper air outlet and is discharged through the lower air supply duct and the lower air outlet.

[0040] Further optionally, the fan assembly also includes a fan blade, which is rotatably arranged in the fan blade cavity; the fan blade includes a first fan blade and a second fan blade arranged in parallel, the first fan blade and the second fan blade can rotate independently or synchronously, and the rotation axis of the first fan blade and the rotation axis of the second fan blade are perpendicular to the height direction of the shell.

[0041] Compared with the prior art, the beneficial effects of the present invention are mainly:

[0042] (1) The windshield and the middle piece are respectively arranged on both sides of the plate body and the two are connected by a rotating shaft to realize synchronous rotation; the windshield has multiple working positions, and correspondingly, the middle piece has multiple first limiting structures; when the windshield rotates to any working position, the second limiting structure cooperates with the corresponding first limiting structure, so that the windshield can be stably and firmly fixed at the working position; the structure is simple, and when the airflow flows through the windshield, the windshield will not vibrate and will not generate noise; the inclination angle of the windshield is adjusted to change the airflow speed and resistance in the air duct, and then the air volume of the air duct is adjusted to meet different air outlet requirements, expand the adjustable range of the air volume, and improve user experience; solve the problem that the windshield is not firmly fixed in the air duct, which causes the windshield to vibrate and generate noise when the airflow flows through, and solve the problem that the air volume of the air duct cannot be adjusted and the adjustable range is narrow;

[0043] (2) The middle piece is a fan-shaped structure and a limiting part and a transmission part are formed in sequence along the outer side wall of the middle piece in the circumferential direction thereof, the limiting part is formed with a plurality of first limiting structures and the transmission part is formed with a plurality of external teeth; the first limiting structure is a limiting groove, and the second limiting structure is a limiting block, which is clamped in the limiting groove, so that the windshield can be stably fixed in the air duct; the external teeth are engaged with the first gear, and when the first gear rotates, the middle piece and the windshield can rotate synchronously; the positioning piece is slidably arranged on the plate body and the positioning piece is formed with a rack, which is engaged with the second gear; the rotation of the second gear can make the positioning piece slide along the plate body, and then the second limiting structure can cooperate with the first limiting structure; the movement is stable and the space occupied is small;

[0044] (3) When the current working position of the wind shield is inconsistent with the target working position, the second limiting structure is separated from the first limiting structure; the wind shield is controlled to rotate to the target working position so that the second limiting structure cooperates with the first limiting structure; the control process is simple, the wind shield is firmly fixed, and the air volume of the air outlet duct has a wide adjustable range to meet different air outlet requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely exemplary, and those skilled in the art can, without inventive effort, derive other implementation drawings based on the provided drawings.

[0046] The structures, proportions, sizes, etc. illustrated in this specification are intended only to complement the contents disclosed herein and to facilitate understanding and reading by persons familiar with the art. They are not intended to limit the conditions under which the present invention may be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in sizes, without affecting the efficacy and objectives of the present invention, shall still fall within the scope of the technical contents disclosed herein.

[0047] Figure 1a A schematic diagram of the assembly structure of a windshield mechanism embodiment provided by the present invention;

[0048] Figure 1b A schematic diagram of the exploded structure of an embodiment of the windshield mechanism provided by the present invention;

[0049] Figure 2a A schematic structural diagram of an embodiment of a mounting base provided by the present invention;

[0050] Figure 2b A schematic diagram of the structure of a middleware embodiment provided by the present invention;

[0051] Figure 3a and Figure 3b A schematic cross-sectional view of an embodiment of a volute, a volute cover, and a fan blade provided by the present invention;

[0052] Figure 3c A schematic diagram of the exploded structure of the volute, volute cover and fan blade embodiment provided by the present invention;

[0053] Figure 4a A schematic structural diagram of an embodiment of an air duct when the windshield provided by the present invention is in the first working position;

[0054] Figure 4b A schematic diagram of the coordinated structure of the first limiting structure and the second limiting structure embodiment when the windshield provided by the present invention is in the first working position;

[0055] Figure 5a A schematic structural diagram of an embodiment of an air duct when the windshield provided by the present invention is in the second working position;

[0056] Figure 5b A schematic diagram of the coordinated structure of the first limiting structure and the second limiting structure embodiment when the windshield provided by the present invention is in the second working position;

[0057] Figure 5c A velocity distribution diagram of the air flow in the air duct when the wind deflector provided by the present invention is in the second working position;

[0058] Figure 6a A schematic structural diagram of an embodiment of an air duct when the windshield provided by the present invention is in the third working position;

[0059] Figure 6b A schematic diagram of the coordinated structure of the first limiting structure and the second limiting structure embodiment when the windshield provided by the present invention is in the third working position;

[0060] Figure 6c A velocity distribution diagram of the air flow in the air duct when the wind deflector provided by the present invention is in the third working position;

[0061] Figure 7a A schematic structural diagram of an embodiment of an air duct when the windshield provided by the present invention is in the fourth working position;

[0062] Figure 7b A schematic diagram of the coordinated structure of the first limiting structure and the second limiting structure embodiment when the windshield provided by the present invention is in the fourth working position;

[0063] Figure 7c A velocity distribution diagram of the air flow in the air duct when the wind deflector provided by the present invention is in the fourth working position;

[0064] Figure 8a A schematic structural diagram of an embodiment of an air duct when the windshield provided by the present invention is in the fifth working position;

[0065] Figure 8b A schematic diagram of the coordinated structure of the first limiting structure and the second limiting structure embodiment when the windshield provided by the present invention is in the fifth working position;

[0066] Figure 9 A schematic flow chart of an embodiment of a method for controlling a windshield mechanism provided by the present invention;

[0067] Figure 10 A schematic diagram of the exploded structure of a fan assembly embodiment provided by the present invention;

[0068] Figure 11 This is a schematic diagram of the assembly structure of an embodiment of a cabinet-type air-conditioning indoor unit provided by the present invention;

[0069] In the picture:

[0070] 1-windshield mechanism; 11-plate body; 111-plate body shaft hole; 112-limiting hole; 113-slide groove; 114-first mounting position; 115-second mounting position; 116-first fixing seat; 117-second fixing seat; 12-frame; 121-ventilation hole; 13-rotating shaft; 14-windshield; 141-limiting shaft; 15-middle piece; 151-first limiting slot; 152-second limiting slot; 153-third limiting slot; 154-fourth limiting slot; 155-fifth limiting slot; 156-external gear; 161-first gear; 162-second gear; 17-positioning member; 171-rack; 181-first motor; 182-second motor;

[0071] 21 - volute; 211 - first air supply inlet; 22 - volute cover; 221 - second air supply inlet; 23 - fan blade; 231 - first fan blade; 232 - second fan blade; 241 - upper air supply duct; 242 - fan blade cavity; 243 - lower air supply duct;

[0072] 3-housing; 31-front side wall; 32-rear side wall; 321-air inlet; 33-left side wall; 34-right side wall; 351-first air inlet duct; 352-second air inlet duct;

[0073] 4-Indoor heat exchanger. DETAILED DESCRIPTION

[0074] The following describes the implementation of the present invention using specific embodiments. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. Obviously, the embodiments described are only a portion of the present invention, not all of it. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are intended to fall within the scope of protection of the present invention.

[0075] The terms used in the embodiments of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The singular forms "a," "the," and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates otherwise. "A plurality" generally includes at least two, but does not exclude the inclusion of at least one.

[0076] It should be understood that the term "and / or" as used herein is merely a description of the relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0077] It should also be noted that the terms "include," "comprises," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a product or system comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such product or system. In the absence of further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the product or system comprising the element.

[0078] Existing ventilation equipment has multiple air outlets, each of which is equipped with a windshield. The windshield is controlled to rotate to open or close the corresponding air outlet according to the air outlet needs, thereby achieving air outlet in different directions. However, due to the lack of the necessary limiting structure, the windshield cannot be stably fixed in the air outlet. When air flows through the windshield, it will periodically hit the windshield, causing the windshield to vibrate and generate noise. In addition, the adjustable range of the windshield's tilt angle is narrow, making it impossible to adjust the air outlet volume over a wide range, resulting in a poor user experience.

[0079] The ventilator is provided with a plurality of windshield members, the windshield members being arranged on a plurality of opposite sides of the windshield and the windshield being arranged on opposite sides of the windshield.

[0080] The structure is simple, and the wind shield will not vibrate or generate noise when the air flows through it; by adjusting the inclination angle of the wind shield, the air flow speed and resistance in the air duct are changed, and the air output of the air duct is adjusted to meet different air output requirements, expand the adjustable range of the air output, and improve user experience; it solves the problem that the wind shield is not firmly fixed in the air duct, which causes the wind shield to vibrate and generate noise when the air flows through it, and solves the problem that the air output of the air duct cannot be adjusted and the adjustable range is narrow.

[0081] <Wind deflector mechanism>

[0082] like Figure 1a 、 Figure 1b 、 Figure 2a and Figure 2b As shown, this embodiment provides a windshield mechanism 1 for a ventilation device, wherein the ventilation device is formed with an air duct; the windshield mechanism 1 includes:

[0083] The mounting base includes a plate body 11, and the plate body 11 is formed with a plate body shaft hole 111; specifically, the plate body 11 includes a first mounting surface and a second mounting surface arranged opposite to each other, and the plate body shaft hole 111 communicates with the first mounting surface and the second mounting surface;

[0084] The windshield 14 and the middle piece 15, the windshield 14 is arranged on one side of the plate body 11 and is located in the air duct, and the windshield 14 is provided with a rotating shaft 13; the windshield 14 has multiple working positions, and when the windshield 14 is in different working positions, the inclination angle of the windshield 14 is different; the middle piece 15 is arranged on the other side of the plate body 11, and a part of the rotating shaft 13 close to the middle piece 15 is rotatably arranged in the plate body shaft hole 111 and the part is connected to the middle piece 15; the middle piece 15 is formed with a plurality of first limiting structures, and the plurality of first limiting structures are arranged in sequence at intervals along the rotation direction of the middle piece 15; the plurality of first limiting structures correspond to the plurality of working positions and the number of the first limiting structures is the same as the number of working positions; specifically, the windshield 14 is rotatably arranged on the first mounting surface, and the middle piece 15 is rotatably arranged on the second mounting surface;

[0085] A positioning member 17 is slidably disposed on the plate body 11 and is located on the same side of the plate body 11 as the intermediate member 15 ; the positioning member 17 is formed with a second limiting structure; specifically, the positioning member 17 is slidably disposed on the second mounting surface;

[0086] When the windshield 14 and the intermediate member 15 rotate synchronously and the windshield 14 is in any working position, the positioning member 17 slides along the plate body 11 and the second limiting structure cooperates with the corresponding first limiting structure, so that the windshield 14 can be fixed in the working position; specifically, the first limiting structure is a limiting groove, and the second limiting structure is a limiting block. The structure of the limiting groove is adapted to the structure of the limiting block, and the limiting block is embedded in the corresponding limiting groove, so that the positioning member 17 limits the position of the intermediate member 15, and the windshield 14 can be fixed in the corresponding working position;

[0087] In this embodiment, the plurality of working positions include a first working position, a second working position, a third working position, a fourth working position and a fifth working position; Figure 4a and Figure 4b As shown, when the wind shield 14 is in the first working position, the wind shield 14 closes the air duct; when the wind shield 14 is in the second working position, the third working position, or the fourth working position, the wind shield 14 partially opens the air duct; when the wind shield 14 is in different working positions, the inclination angle of the wind shield 14 is different, and thus the air flow rate of the air duct is different; from the second working position to the fourth working position, the inclination angle of the wind shield 14 gradually increases, and the air flow rate of the air duct gradually increases; as shown in FIG. Figure 8a and Figure 8b As shown, when the wind shield 14 is in the fifth working position, the wind shield 14 fully opens the air duct; correspondingly, the plurality of first limiting structures include a first limiting groove 151, a second limiting groove 152, a third limiting groove 153, a fourth limiting groove 154 and a fifth limiting groove 155;

[0088] like Figure 4a and Figure 4bAs shown, when the air duct does not need to discharge air, the wind shield 14 is in the first working position, the limiting block cooperates with the first limiting groove 151, and the wind shield 14 can be fixed in the first working position; Figures 5a to 7b As shown, when the air duct needs to partially discharge air, the wind shield 14 is placed in the second working position, the third working position, or the fourth working position, and the limiting block cooperates with the second limiting groove 152, the third limiting groove 153, or the fourth limiting groove 154, so that the wind shield 14 can be fixed in the second working position, the third working position, or the fourth working position; Figure 8a and Figure 8b As shown, when the air duct needs to be fully discharged, the wind shield 14 is placed in the fifth working position, the limiting block cooperates with the fifth limiting groove 155, and the wind shield 14 can be fixed at the fifth working position;

[0089] To sum up, the wind shield 14 is firmly and reliably fixed, with a simple structure. When the air flows through the wind shield 14, the wind shield 14 will not vibrate and will not generate noise. By adjusting the inclination angle of the wind shield 14, the air flow speed and resistance in the air duct are changed, and the air outlet of the air duct is adjusted to meet different air outlet requirements, the adjustable range of the air outlet is expanded, and the user experience is improved. This solves the problem that the wind shield 14 is not firmly fixed in the air duct, causing the wind shield 14 to vibrate and generate noise when the air flows through, and solves the problem that the air outlet of the air duct cannot be adjusted and the adjustable range is narrow.

[0090] like Figure 1b and Figure 2b As shown, in order to address the problems of the middle piece 15 having a complex structure, occupying a large space and having a single function, this embodiment proposes that the middle piece 15 has a fan-shaped structure and the outer wall of the middle piece 15 forms a limiting portion, and the limiting portion forms a plurality of first limiting structures; each first limiting structure extends radially along the rotating shaft 13.

[0091] Furthermore, a transmission portion is formed on the outer wall of the middle piece 15, and the transmission portion and the limiting portion are sequentially arranged along the circumference of the middle piece 15; the transmission portion is formed with a plurality of external teeth 156, and the plurality of external teeth 156 are sequentially spaced along the rotation direction of the middle piece 15;

[0092] The windshield mechanism 1 further includes a first gear 161 and a first motor 181. The first gear 161 is rotatably mounted on the plate body 11 and is located on the same side of the plate body 11 as the intermediate member 15. The first gear 161 meshes with the external teeth 156 and is drivingly connected to a first motor 181 mounted on the plate body 11. The operation of the first motor 181 drives the first gear 161 to rotate, thereby causing the intermediate member 15 and the windshield 14 to rotate synchronously.

[0093] Specifically, the first gear 161 is rotatably disposed on the second mounting surface, and the first motor 181 is disposed on the second mounting surface; when the first motor 181 rotates counterclockwise, the first gear 161 rotates counterclockwise, and the intermediate member 15 and the windshield 14 rotate clockwise; when the first motor 181 rotates clockwise, the first gear 161 rotates clockwise, and the intermediate member 15 and the windshield 14 rotate counterclockwise;

[0094] It should be noted that the first gear 161 can be removed, and the first motor 181 is directly driven and connected to the intermediate component 15 .

[0095] like Figure 1b and Figure 2b As shown, in order to address the problems that the positioning member 17 has a complex structure, occupies a large space and has a single function, this embodiment proposes that the positioning member 17 is a strip-shaped structure and a second limiting structure is formed at one end of the positioning member 17 close to the middle member 15; when the limiting block is embedded in the limiting groove, the wind shield 14 can be fixed at the corresponding working position.

[0096] Furthermore, the positioning member 17 extends radially along the rotating shaft 13, and a rack 171 is formed on one side of the positioning member 17. The rack 171 is a straight rack and extends radially along the rotating shaft 13; the windshield mechanism 1 also includes a second gear 162 and a second motor 182. The second gear 162 is rotatably disposed on the plate body 11, and the second gear 162 and the intermediate member 15 are located on the same side of the plate body 11; the second gear 162 is engaged with the rack 171, and the second gear 162 is driven and connected to the second motor 182, and the second motor 182 is disposed on the plate body 11; when the second motor 182 is running, the second gear 162 rotates, which can cause the positioning member 17 to slide along the plate body 11; specifically, the second gear 162 is rotatable The second mounting surface is movably provided with a second motor 182, and a slide groove 113 is formed on the second mounting surface, and the slide groove 113 extends along the radial direction of the rotating shaft 13, and the positioning member 17 is slidably provided in the slide groove 113; when the positioning member 17 slides along the slide groove 113 in the direction close to the rotating shaft 13, the second limiting structure can cooperate with the first limiting structure; it plays a good limiting role on the windshield 14, preventing the windshield 14 from displacement and vibration under the action of airflow and gravity, avoiding noise, and improving the reliability and stability of the windshield 14; when the positioning member 17 slides along the slide groove 113 in the direction away from the rotating shaft 13, the second limiting structure can be separated from the first limiting structure;

[0097] The first gear 161 is engaged with the outer teeth 156 , and the intermediate member 15 moves stably; the second gear 162 is engaged with the rack 171 , and the positioning member 17 moves stably.

[0098] Specifically, a first mounting position 114 and a second mounting position 115 are provided on the second mounting surface. The first mounting position 114 is formed with a first mounting hole, and one end of the axle of the first gear 161 is rotatably provided in the first mounting hole; the second mounting position 115 is formed with a second mounting hole, and one end of the axle of the second gear 162 is provided in the second mounting hole; a first fixing seat 116 and a second fixing seat 117 are also provided on the second mounting surface, and the first fixing seat 116 and the second fixing seat 117 are used to fix the windshield mechanism 1.

[0099] like Figure 1b and Figure 2a As shown, in order to address the problem of unreliable fixation of the wind shield 14 in the air duct, this embodiment proposes that the mounting base also includes a frame 12, the frame 12 is arranged on the plate 11 and the frame 12 and the wind shield 14 are located on the same side of the plate 11; the frame 12 is located in the air duct and the frame 12 is formed with a frame axis hole; the frame axis hole is connected to the plate axis hole 111 and is coaxially arranged; a part of the rotating shaft 13 close to the wind shield 14 is rotatably arranged in the frame axis hole.

[0100] Furthermore, the frame 12 is further formed with ventilation holes 121, which are located on the side of the frame shaft hole; and the ventilation holes 121 are connected to the air ducts on both sides of the wind shield 14; when the wind shield 14 is in the first working position, the wind shield 14 closes the ventilation holes 121, and the air duct does not exhaust air outward; when the wind shield 14 is in the second working position, the third working position, or the fourth working position, the wind shield 14 partially opens the ventilation holes 121, and the air duct partially exhausts air outward; when the wind shield 14 is in the fifth working position, the wind shield 14 fully opens the ventilation holes 121, and the air duct completely exhausts air outward;

[0101] Specifically, the frame 12 is arranged on the first mounting surface, and the structure of the outer contour of the frame 12 is adapted to the structure of the air duct, so that the outer wall of the frame 12 is sealed and connected to the inner wall of the air duct; the inner contour of the frame 12 is arranged to form a ventilation hole 121, and the structure of the ventilation hole 121 is adapted to the structure of the wind shield 14; the ventilation hole 121 is formed with a sealing groove on the side facing the wind shield 14, and the sealing groove is coaxial with the ventilation hole. A sealing ring is provided in the sealing groove, so that when the wind shield 14 is in the first working position, the wind shield 14 can be sealed and connected to the frame 12, thereby completely closing the ventilation hole 121 and preventing air from being discharged through the gap between the wind shield 14 and the frame 12;

[0102] The frame 12 is a square structure, the rotating shaft 13 extends along the length direction of the frame 12, and the frame shaft hole extends along the length direction of the frame 12; a limiting hole 112 is formed on the plate 11, the limiting hole 112 is an arc-shaped structure and the limiting hole 112 is coaxial with the middle piece 15; the limiting hole 112 is connected to the first mounting surface and the second mounting surface; a limiting shaft 141 is set in the limiting hole 112, one end of the limiting shaft 141 is connected to the side of the windshield 14 close to the plate 11, and the other end of the limiting shaft 141 is connected to the side of the windshield 14 close to the plate 11 The end is connected to the side of the plate body 11 close to the wind shield 14; when the middle piece 15 and the wind shield 14 rotate synchronously, the limiting shaft 141 slides along the limiting hole 112, which is used to limit the wind shield 14 and the middle piece 15, so as to prevent the middle piece 15 and the wind shield 14 from rotating at too large an angle, causing the wind shield 14 to collide with the inner wall of the air duct; the circumferential length of the limiting hole 112 can be designed according to actual needs. The larger the circumferential length of the limiting hole 112, the larger the angular range of the wind shield 14 can rotate.

[0103] The inclination angle of the wind shield 14 is the angle between the board surface of the wind shield 14 and the plane where the frame 12 is located; from the first working position to the fifth working position, the wind shield 14 rotates toward the bottom of the frame 12 and the inclination angle of the wind shield 14 gradually increases; when the wind shield 14 is in the first working position, the inclination angle of the wind shield 14 is the smallest, and the wind shield 14 completely closes the ventilation hole 121; when the wind shield 14 is in the fifth working position, the inclination angle of the wind shield 14 is the largest, and the wind shield 14 completely opens the ventilation hole 121.

[0104] <Control Method>

[0105] like Figure 9 As shown, this embodiment provides a control method for the windshield mechanism 1 according to any one of the above items, and the control method includes:

[0106] S1. Determine whether the current working position of the windshield 14 is consistent with the target working position;

[0107] S21, if no, control the positioning member 17 to slide so that the second limiting structure is separated from the first limiting structure; jump to S3;

[0108] S22: If yes, the positions of the positioning member 17 and the windshield 14 are controlled to remain unchanged;

[0109] S3, controlling the windshield 14 to rotate to the target working position;

[0110] S4, controlling the positioning member 17 to slide so that the second limiting structure cooperates with the first limiting structure;

[0111] In summary, the control process is simple, the wind shield 14 is firmly fixed, and the air volume of the air outlet duct can be adjusted in a wide range to meet different air outlet requirements.

[0112] Furthermore, before S1, it also included:

[0113] S01. When the ventilation equipment is running, obtain the current air output volume and target air output volume of the air duct;

[0114] S02. Calculating the difference between the current air flow rate of the air duct and the target air flow rate;

[0115] S03, determining whether the air volume difference is within a preset air volume difference range;

[0116] S04. When the air volume difference is not within the preset air volume difference range, the current working position of the wind shield 14 is inconsistent with the target working position;

[0117] S05. When the air volume difference is within the preset air volume difference range, the current working position of the wind shield 14 is consistent with the target working position.

[0118] To address the issue of mismatch between the air volume difference of the air duct and the rotation angle of the wind shield 14, this embodiment proposes that the air volume difference of the air duct includes multiple preset air volume difference ranges, the wind shield 14 includes multiple rotation angles, and there is a preset correspondence between the preset air volume difference ranges and the rotation angles; S3 includes:

[0119] S31, determining a preset large range of air volume difference within which the air volume difference lies;

[0120] S32, determining a target rotation angle of the windshield 14 according to a preset large range of air volume difference in which the air volume difference is located and a preset corresponding relationship;

[0121] S33, controlling the windshield plate 14 to rotate to a target rotation angle so that the windshield plate 14 is located at a target working position.

[0122] S31 includes:

[0123] Compare the air volume difference with the minimum threshold and maximum threshold of the preset air volume difference range respectively;

[0124] When the air volume difference is greater than the minimum threshold of the preset large air volume difference range and less than the maximum threshold of the preset large air volume difference range, the air volume difference is in the preset large air volume difference range;

[0125] Furthermore, the plurality of preset air volume difference intervals include a first preset air volume difference interval, a second preset air volume difference interval, a third preset air volume difference interval, and a fourth preset air volume difference interval; the plurality of rotation angles include a first preset rotation angle, a second preset rotation angle, a third preset rotation angle, and a fourth preset rotation angle; and the current working position of the wind shield 14 is the fifth working position;

[0126] like Figure 4a and Figure 4bAs shown, when the air volume difference is within the first preset air volume difference range, the target rotation angle of the wind shield 14 is the first preset rotation angle, and the wind shield 14 is controlled to rotate the first rotation angle so that the wind shield 14 is located in the first working position;

[0127] like Figure 5a and Figure 5b As shown, when the air volume difference is within the second preset air volume difference range, the target rotation angle of the wind shield 14 is the second preset rotation angle, and the wind shield 14 is controlled to rotate the second rotation angle so that the wind shield 14 is located in the second working position;

[0128] like Figure 6a and Figure 6b As shown, when the air volume difference is within the third preset air volume difference range, the target rotation angle of the wind shield 14 is the third preset rotation angle, and the wind shield 14 is controlled to rotate the third rotation angle so that the wind shield 14 is located in the third working position;

[0129] like Figure 7a and Figure 7b As shown, when the air volume difference is in the fourth preset air volume difference range, the target rotation angle of the wind shield 14 is the fourth preset rotation angle, and the wind shield 14 is controlled to rotate the fourth rotation angle so that the wind shield 14 is located in the fourth working position.

[0130] Additionally, S3 includes:

[0131] Determine the target direction of the wind deflector 14 according to the sign of the air volume difference;

[0132] The windshield 14 is controlled to turn toward the target.

[0133] Determining the target direction of the wind deflector 14 according to the sign of the air volume difference includes:

[0134] When the air volume difference is greater than zero, the standard direction is the direction that reduces the air volume;

[0135] When the air volume difference is less than zero, the target direction is a direction that increases the air volume.

[0136] <Cabinet-type air conditioner indoor unit>

[0137] like Figure 3a 、 Figure 3b and Figure 3c As shown, this embodiment provides a cabinet-type air-conditioning indoor unit, including the wind deflector mechanism 1 described in any one of the above items or a control method using the wind deflector mechanism 1 described in any one of the above items;

[0138] The cabinet air conditioner indoor unit includes a fan assembly, which includes a volute 21, a volute cover 22, and a fan blade 23. The volute 21 and the volute cover 22 are buckled together to form an upper air supply duct 241, a fan blade cavity 242, and a lower air supply duct 243. The upper air supply duct 241, the fan blade cavity 242, and the lower air supply duct 243 are sequentially arranged and connected in the vertical direction of the volute 21 and the volute cover 22. The fan blade 23 is rotatably disposed in the fan blade cavity 242, and the wind shield 14 is rotatably disposed in the lower air supply duct 243 and adjacent to the fan blade cavity 242.

[0139] Specifically, the volute 21 and the volute cover 22 are connected by screws and snaps; the volute cover 22 is formed with a frame mounting groove near the lower air supply duct 243, and the windshield plate 14 and the frame 12 are arranged in the lower air supply duct 243 through the frame mounting groove; the plate 11 is located outside the air duct and is mounted on the volute cover 22 via the first fixing seat 116 and the second fixing seat 117;

[0140] like Figure 10 and Figure 11 As shown, the cabinet air conditioner indoor unit includes a shell 3 and an indoor heat exchanger 4, and the shell 3 includes a front side wall 31, a left side wall 33, a right side wall 34 and a rear side wall 32; the front side wall 31 forms an upper air outlet and a lower air outlet, the upper air outlet is located on the upper side, and the lower air outlet is located on the lower side; the air outlet end of the upper air supply duct 241 is connected to the upper air outlet, and the air outlet end of the lower air supply duct 243 is connected to the lower air outlet; the rear side wall 32 is formed with an air inlet 321; the four side walls of the shell 3 are surrounded by an installation cavity, and the indoor heat exchanger 4 is arranged in the installation cavity and close to the air inlet 321; the fan assembly is arranged in the installation cavity and at the air outlet end of the indoor heat exchanger 4;

[0141] The volute 21 is formed with a first air supply inlet 211, a first air inlet duct 351 is formed between the first air supply inlet 211 and the air inlet 321, and the first air supply inlet 211 is connected to the first air inlet duct 351 and the fan chamber 242; the volute cover 22 is formed with a second air supply inlet 221, a second air inlet duct 352 is formed between the second air supply inlet 221 and the air inlet 321, and the second air supply inlet 221 is connected to the second air inlet duct 352 and the fan chamber 242; the fan blade 23 includes a first fan blade 231 and a second fan blade 232; the first fan blade 231 and the second fan blade 232 are arranged side by side on the left and right, with the first fan blade 231 being arranged near the first air supply inlet 211 and the second fan blade 232 being arranged near the second air supply inlet 221; the first fan blade 231 and the second fan blade 232 can rotate independently or synchronously;

[0142] When the first fan blade 231 and the second fan blade 232 rotate, a part of the indoor air enters the fan chamber 242 smoothly through the air inlet 321, the first air inlet duct 351 and the first air supply inlet 211; the other part of the indoor air enters the fan chamber 242 smoothly through the air inlet 321, the second air inlet duct 352 and the second air supply inlet 221; the flow path is short and the air intake resistance is small, which avoids the occurrence of wind trapping and reduces the loss of air intake volume; when the fan speed is increased, the air intake volume is significantly increased; the air intake is uniform and smooth through the left and right sides; the normal temperature air is converted into hot and cold air after passing through the indoor heat exchanger 4, and then due to the pressurization effect of the first fan blade 231 and the second fan blade 232, the air in the fan chamber 242 is supplied upward through the upper air supply duct 241 and downward through the lower air supply duct 243, which can meet different air supply needs; the structure is simple, the space occupied is small, the fan efficiency is high, the air volume is large and the noise is low.

[0143] like Figure 4a and Figure 4b As shown, when the windshield 14 is in the first working position, the limit block is embedded in the first limit groove 151, the windshield 14 completely closes the ventilation hole 121, and the airflow in the blade cavity 242 cannot enter the lower air supply duct 243 and is blown out from the upper air supply duct 241; Figures 5a to 7b As shown, when the wind shield 14 is in the second working position, the third working position, or the fourth working position, the limit block is embedded in the second limit groove 152, the third limit groove 153, or the fourth limit groove 154, the wind shield 14 does not fully open the ventilation hole 121, a part of the air flow in the fan chamber 242 is discharged through the lower air supply duct 243, and another part of the air flow in the fan chamber 242 is discharged from the upper air supply duct 241, and the air flow rate discharged from the lower air supply duct 243 is smaller than the air flow rate discharged from the upper air supply duct 241; as shown in FIG. Figure 8a and Figure 8b As shown, when the wind shield 14 is in the fifth working position, the limit block is embedded in the fifth limit groove 155, the wind shield 14 fully opens the ventilation hole 121, and a part of the air flow in the fan blade cavity 242 is discharged through the lower air supply duct 243, and the other part of the air flow in the fan blade cavity 242 is blown out from the upper air supply duct 241, and the air flow rate discharged from the lower air supply duct 243 is consistent with the air flow rate discharged from the upper air supply duct 241.

[0144] The angle at which the wind shield 14 rotates from the first working position to the fifth working position is θ, with a value range of 30° to 180°, and θ=60°; the angle at which the wind shield 14 rotates from the first working position to the second working position is θ / 4; the angle at which the wind shield 14 rotates from the first working position to the third working position is θ*2 / 4; and the angle at which the wind shield 14 rotates from the first working position to the fourth working position is θ*3 / 4.

[0145] The airflow velocity distribution when the wind shield 14 is in the second working position, the third working position and the fourth working position is as follows: Figure 5c 、 Figure 6cand Figure 7c As shown, when the inclination angle of the wind shield 14 is larger, the resistance in the lower air supply duct 243 is smaller, the air flow speed in the lower air supply duct 243 is also larger, and the air output volume is also larger; when the wind shield 14 has not fully opened the ventilation hole 121, the resistance in the lower air supply duct 243 is adjusted by rotating the wind shield 14 to different positions, and the air flow speed of the lower air supply duct 243 and the upper air supply duct 241 is changed, thereby achieving the purpose of adjusting the air output volume.

[0146] It should also be noted that the windshield 14 can also be rotatably disposed in the upper air supply duct 241 and close to the fan chamber 242. In this case, downward exhaust or simultaneous exhaust from top to bottom can be achieved.

[0147] Alternatively, the wind shield mechanism includes two wind shields, one wind shield mechanism having a wind shield rotatably disposed in the upper air supply duct 241 and close to the fan blade cavity 242, and the other wind shield mechanism having a wind shield rotatably disposed in the lower air supply duct 243 and close to the fan blade cavity 242. At this time, upward exhaust, downward exhaust, or simultaneous exhaust up and down can be achieved.

[0148] While the exemplary embodiments of the present disclosure have been specifically illustrated and described above, it should be understood that the present disclosure is not limited to the detailed structures, configurations, or implementations described herein; rather, the present disclosure is intended to encompass various modifications and equivalent configurations within the spirit and scope of the appended claims.

Claims

1. A windshield mechanism for a ventilation device, wherein the ventilation device is formed with an air duct; characterized in that: The windshield mechanism (1) comprises: A mounting seat comprising a plate body (11); A windshield (14) and an intermediate component (15), wherein the windshield (14) is arranged on one side of the plate body (11) and is located in the air duct; the windshield (14) has a plurality of working positions, and when the windshield (14) is in different working positions, the inclination angle of the windshield (14) is different; the intermediate component (15) is arranged on the other side of the plate body (11), and the intermediate component (15) and the windshield (14) are synchronously rotatably connected to the plate body (11); the intermediate component (15) is formed with a plurality of first limiting structures, and the plurality of first limiting structures are sequentially spaced along the rotation direction of the intermediate component (15); the plurality of first limiting structures correspond to the plurality of working positions; a positioning member (17) slidably disposed on the plate body (11), wherein the positioning member (17) and the intermediate member (15) are located on the same side of the plate body (11); the positioning member (17) is formed with a second limiting structure; When the windshield (14) and the intermediate member (15) rotate synchronously and the windshield (14) is in any of the working positions, the positioning member (17) slides along the plate body (11) and the second limiting structure cooperates with the corresponding first limiting structure, so that the windshield (14) can be fixed at the working position.

2. The wind deflector mechanism according to claim 1, characterized in that: The plate body (11) is formed with a plate body shaft hole (111); the windshield plate (14) is provided with a rotating shaft (13), a portion of the rotating shaft (13) close to the middle piece (15) is rotatably arranged in the plate body shaft hole (111) and the portion is connected to the middle piece (15); the middle piece (15) is a fan-shaped structure and the outer side wall of the middle piece (15) is formed with a limiting portion, and the limiting portion is formed with a plurality of the first limiting structures; each of the first limiting structures is a limiting groove and extends along the radial direction of the rotating shaft (13).

3. The wind deflector mechanism according to claim 2, characterized in that: The outer wall of the middle piece (15) is further formed with a transmission portion, wherein the transmission portion and the limiting portion are sequentially arranged along the circumference of the middle piece (15); the transmission portion is formed with a plurality of external teeth (156), and the plurality of external teeth (156) are sequentially spaced along the rotation direction of the middle piece (15); The windshield mechanism (1) further comprises a first gear (161), the first gear (161) being rotatably disposed on the plate body (11), and the first gear (161) and the intermediate member (15) being located on the same side of the plate body (11); the first gear (161) being engaged with the external teeth (156); The first gear (161) rotates, causing the intermediate component (15) and the windshield (14) to rotate synchronously.

4. The wind deflector mechanism according to claim 2, characterized in that: The positioning member (17) is a strip-shaped structure and one end of the positioning member (17) is formed with the second limiting structure; the second limiting structure is a limiting block; when the limiting block is embedded in the limiting groove, the windshield (14) can be fixed at the corresponding working position.

5. The wind deflector mechanism according to claim 4, characterized in that: A rack (171) is formed on one side of the positioning member (17); the windshield mechanism (1) further comprises a second wheel (162), the second wheel (162) being rotatably disposed on the plate body (11) and the second wheel (162) and the intermediate member (15) being located on the same side of the plate body (11); the second wheel (162) is meshed with the rack (171); The second wheel (162) rotates to enable the positioning member (17) to slide along the plate body (11).

6. The wind deflector mechanism according to claim 2, characterized in that: The mounting seat further comprises a frame (12), the frame (12) being arranged on the plate (11) and the frame (12) and the windshield (14) being located on the same side of the plate (11); the frame (12) being located in the air duct and the frame (12) being formed with a frame shaft hole; the frame shaft hole being in communication with the plate shaft hole (111) and being coaxially arranged; A portion of the rotating shaft (13) close to the windshield is rotatably arranged in the shaft hole of the frame.

7. The wind deflector mechanism according to claim 6, characterized in that: The frame (12) is further formed with a ventilation hole (121), and the ventilation hole (121) is located on the side of the frame shaft hole; the ventilation hole (121) is connected to the air ducts on both sides of the windshield (14); When the wind shield (14) is in the first working position, the wind shield (14) closes the ventilation hole (121); when the wind shield (14) is in the second working position, the third working position, or the fourth working position, the wind shield (14) partially opens the ventilation hole (121); when the wind shield (14) is in the fifth working position, the wind shield (14) fully opens the ventilation hole (121).

8. A method for controlling a windshield mechanism according to any one of claims 1 to 7, characterized in that: The control method includes: Determining whether the current working position of the windshield (14) is consistent with the target working position; If not, controlling the positioning member (17) to slide so that the second limiting structure is separated from the first limiting structure; Controlling the windshield (14) to rotate to a target working position; The positioning member (17) is controlled to slide so that the second limiting structure cooperates with the first limiting structure.

9. The control method of the windshield mechanism according to claim 8, characterized in that: Before determining whether the current working position of the windshield plate (14) is consistent with the target working position, the method further includes: When the ventilation device is running, obtaining the current air output volume and the target air output volume of the air duct; Calculating the difference between the current air flow rate of the air duct and the target air flow rate; Determining whether the air volume difference is within a preset air volume difference range; When the air volume difference is not within the preset air volume difference interval, the current working position of the wind shield (14) is inconsistent with the target working position.

10. The control method of the wind deflector mechanism according to claim 9, characterized in that: The air flow difference of the air duct includes a plurality of preset air flow difference intervals, the wind shield (14) includes a plurality of rotation angles, and there is a preset corresponding relationship between the preset air flow difference intervals and the rotation angles; and controlling the wind shield (14) to rotate to a target working position includes: Determining a preset maximum air volume difference range within which the air volume difference lies; Determining a target rotation angle of the wind shield (14) according to a preset large range of air volume difference in which the air volume difference is located and the preset corresponding relationship; The windshield (14) is controlled to rotate to the target rotation angle so that the windshield (14) is located at the target working position.

11. The control method of the windshield mechanism according to claim 8, characterized in that: If yes, the positions of the positioning member (17) and the windshield (14) are controlled to remain unchanged.

12. A cabinet-type air conditioner indoor unit, characterized in that: A windshield mechanism comprising any one of claims 1 to 7 or a control method for a windshield mechanism employing any one of claims 8 to 11; The cabinet-type air-conditioning indoor unit includes a fan assembly, which includes a volute (21) and a volute cover (22); the volute (21) and the volute cover (22) are buckled together to form a lower air supply duct (243); and the wind shield (14) is rotatably arranged in the lower air supply duct (243).

13. The cabinet-type air-conditioning indoor unit according to claim 12, characterized in that: The volute (21) and the volute cover (22) are further formed with an upper air supply duct (241) and a blade chamber (242); the upper air supply duct (241), the blade chamber (242) and the lower air supply duct (243) are sequentially arranged and connected along the height direction of the volute (21) and the volute cover (22); the blade chamber (242) is formed with a first air supply inlet and a second air supply inlet; The cabinet-type air-conditioning indoor unit further comprises a shell, the shell being formed with an air inlet, an upper air outlet and a lower air outlet; a first air inlet is formed between the air inlet and the first air supply inlet, the first air supply inlet being connected to the first air inlet and the fan chamber (242); a second air inlet is formed between the air inlet and the second air supply inlet, the second air supply inlet being connected to the second air inlet and the fan chamber (242); the upper air outlet is connected to the air outlet end of the upper air supply duct (241), and the lower air outlet is connected to the air outlet end of the lower air supply duct (243); A portion of the indoor air enters the fan chamber (242) through the air inlet, the first air inlet duct and the first air supply inlet; another portion of the indoor air enters the fan chamber (242) through the air inlet, the second air inlet duct and the second air supply inlet; the air in the fan chamber (242) is discharged through the upper air supply duct (241) and the upper air outlet and discharged through the lower air supply duct (243) and the lower air outlet.

14. The cabinet-type air-conditioning indoor unit according to claim 13, characterized in that: The fan assembly further comprises a fan blade (23), wherein the fan blade (23) is rotatably arranged in the fan blade cavity (242); the fan blade (23) comprises a first fan blade and a second fan blade arranged in parallel, wherein the first fan blade and the second fan blade can rotate independently or synchronously, and the rotation axis of the first fan blade and the rotation axis of the second fan blade are perpendicular to the height direction of the shell.

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