Air duct components and air conditioner indoor units

Abstract

14. The condenser fan of claim 13, wherein the condenser fan is configured to draw air from the first fan blade and the second fan blade together with the fan's outer cover to create a condenser fan which draws air from the first fan blade into the condenser fan.

Description

Technical Field

[0001] The present invention relates to the field of household appliances, and in particular to an air duct component and an air conditioner indoor unit. Background Art

[0002] At present, the air supply mode of air conditioners is single, with both cold and hot air blown out from the same air outlet, relying only on the air guide mechanism to deflect the wind direction. When heating, most of the hot air begins to float up before reaching the ground, and when cooling, most of the cold air begins to sink before reaching the roof, resulting in uneven temperature distribution in the room, poor user comfort, long heat exchange time, and low efficiency.

[0003] The prior art provides an air conditioner that achieves upward and downward air discharge by combining a multi-stage fan. However, this form results in a larger overall size of the air conditioner, and the air intake is from the front, which damages the appearance and is unacceptable.

[0004] The prior art also provides an air conditioner that switches the air inlet and outlet directions by driving the volute movement. However, this form of air outlet has poor stability, causing the air inlet to sometimes take in air and sometimes out of air, thereby reducing comfort and heat exchange efficiency. Summary of the Invention

[0005] The main purpose of the present invention is to provide an air duct assembly and an air conditioner indoor unit to solve the problem of a single air supply mode of the air conditioner indoor unit in the prior art.

[0006] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, there is provided an air duct assembly, including a fan blade, the air duct assembly also including: a first duct assembly, including a first volute component and a second volute, the first volute component including a first volute and a first volute tongue, the first volute tongue being located at a first end of the first volute component; a first air duct and a first opening are formed between the first volute component and the second volute, the first end of the first air duct is a closed end, and the second end of the first air duct is the first opening; a second duct assembly, including a second volute component and a fourth volute, the second volute component including a third volute and a second volute tongue, the second volute tongue being located at the second end of the second volute component; the second volute component and the first volute component are spaced apart to form a second air duct for arranging the fan blade; a second opening for supplying air upward is formed between the first end of the first volute component and the first end of the second volute component, and the second end of the first volute component and the second volute component and a second vent opening for supplying air downwardly, wherein the vent opening is configured to connect the first and second ends of the vent and the second end of the vent, wherein the vent and the second end of the vent are connected, wherein the vent and the second end of the vent are connected, wherein the vent and the second end of the vent are connected, wherein the vent and the second end of the vent are connected, wherein the vent and the second end of the vent are connected, wherein the vent and the second end of the vent are connected, wherein the vent and the second end of the vent are connected,

[0007] Further, the first volute includes a plurality of volute portions, which are arranged in sequence from the closed end of the first air duct to the first opening, and each volute portion can be rotatably arranged so that each volute portion can switch between the first initial position and the first wind-guiding position; and / or, the third volute includes a plurality of volute segments, which are arranged in sequence from the fourth opening to the closed end of the third air duct, and each volute segment can be rotatably arranged so that each volute segment can switch between the second initial position and the second wind-guiding position.

[0008] Furthermore, the air duct assembly includes a plurality of first driving members, which are drivingly connected to the plurality of volute parts so that the first driving members drive the corresponding volute parts to rotate.

[0009] Furthermore, the multiple volute portions include a first volute portion, a second volute portion and a third volute portion, and the first volute portion, the second volute portion and the third volute portion are arranged in sequence from the closed end of the first air duct to the first opening; when the first volute portion, the second volute portion and the third volute portion are all in the first initial position, the first end of the first volute portion abuts against the first volute tongue, the second end of the first volute portion abuts against the first end of the second volute portion, the second end of the second volute portion abuts against the first end of the third volute portion, and the second end of the third volute portion and the second end of the second volute form a first opening; when the first volute portion, the second volute portion and the third volute portion are all in the first air-guiding position, a first connecting port is formed between the first volute portion and the first volute tongue, a second connecting port is formed between the first volute portion and the second volute portion, and a third connecting port is formed between the second volute portion and the third volute portion.

[0010] Furthermore, there is a first preset angle between the first initial position of the first volute part and the first wind-guiding position, and when the first volute part rotates from the first initial position toward the first wind-guiding position, the first end of the first volute part rotates toward the fan blade; wherein the first preset angle is greater than or equal to 7° and less than or equal to 12°; and / or, there is a second preset angle between the first initial position of the second volute part and the first wind-guiding position, and when the second volute part rotates from the first initial position toward the first wind-guiding position, the first end of the second volute part rotates toward the fan blade; wherein the second preset angle is greater than or equal to 12° and less than or equal to 18°; and / or, there is a third preset angle between the first initial position of the third volute part and the first wind-guiding position, and when the third volute part rotates from the first initial position toward the first wind-guiding position, the first end of the third volute part rotates toward the fan blade; wherein the third preset angle is greater than or equal to 22° and less than or equal to 28°.

[0011] and a second end of the third volute segment abuts against the first end of the second volute segment, and the second end of the third volute segment abuts against the second volute tongue. When the first volute segment, the second volute segment, and the third volute segment are all in the second air-guiding position, a fourth connecting opening is formed between the first volute segment and the second volute segment, a fifth connecting opening is formed between the second volute segment and the third volute segment, and a sixth connecting opening is formed between the third volute segment and the second volute tongue. The second end of the first volute segment There is a fourth preset angle between the initial position and the second wind-guiding position, and when the first volute segment rotates from the second initial position toward the second wind-guiding position, the second end of the first volute segment rotates toward the fan blade; wherein the fourth preset angle is greater than or equal to 22° and less than or equal to 28°; and / or, there is a fifth preset angle between the second initial position and the second wind-guiding position of the second volute segment, and when the second volute segment rotates from the second initial position toward the second wind-guiding position, the second end of the second volute segment rotates toward the fan blade; wherein the fifth preset angle is greater than or equal to 12° and less than or equal to 18°; and / or, there is a sixth preset angle between the second initial position and the second wind-guiding position of the third volute segment, and when the third volute segment rotates from the second initial position toward the second wind-guiding position, the second end of the third volute segment rotates toward the fan blade; wherein the sixth preset angle is greater than or equal to 7° and less than or equal to 12°.

[0012] Furthermore, the first end of the first volute component, the first end of the second volute component and the first end of the fourth volute are all located in the first plane; the first volute component has a first surface, the first volute component has a third surface and a fourth surface arranged opposite to each other, the fourth volute has a fifth surface, a second air duct is formed between the first surface and the third surface, and a third air duct is formed between the fourth surface and the fifth surface; the first angle between the first section of the first end of the first surface and the first plane is A1; wherein A1 is greater than or equal to 175° and less than or equal to 180°; and / or, the second angle between the second section of the first end of the third surface and the first plane is A2; wherein A2 is greater than or equal to 135° and less than or equal to 145°; and / or, the third angle between the third section of the first end of the fifth surface and the first plane is A3, and A3 is greater than or equal to 160° and less than or equal to 168°.

[0013] Furthermore, the second end of the first volute component, the second end of the second volute component and the second end of the second volute are all located in the second plane; the first volute component has a first surface and a second surface arranged opposite to each other, the second volute component has a third surface, and the second volute has a sixth surface, a second air duct is formed between the first surface and the third surface, and a first air duct is formed between the second surface and the sixth surface; the fourth angle between the fourth section of the second end of the first surface and the second plane is A4; wherein, A4 is greater than or equal to 135° and less than or equal to 145°; and / or, the fifth angle between the fifth section of the second end of the third surface and the second plane is A5; wherein, A5 is greater than or equal to 175° and less than or equal to 180°; and / or, the sixth angle between the sixth section of the second end of the sixth surface and the second plane is A6; wherein, A6 is greater than or equal to 160° and less than or equal to 168°.

[0014] Further, the first end of the first volute component, the first end of the second volute component and the first end of the fourth volute are all located in the first plane, and when at least a portion of the third volute is in the second initial position, the distance between the first end of the first volute component and the first end of the second volute component is L2, and the distance between the first end of the second volute component and the first end of the fourth volute is L1; wherein, L1 / (L1+L2)=0.35~0.4; and / or, the second end of the first volute component, the second end of the second volute component and the second end of the second volute are all located in the second plane, and when at least a portion of the first volute is in the first initial position, the distance between the second end of the first volute component and the second end of the second volute component is L4, and the distance between the second end of the first volute component and the second end of the second volute is L3; wherein, L3 / (L3+L4)=0.35~0.4.

[0015] According to another aspect of the present invention, an air-conditioning indoor unit is provided, comprising a shell and an air duct assembly, the shell comprising a first air supply outlet for supplying air upward and a second air supply outlet for supplying air downward; the air duct assembly is the above-mentioned air duct assembly, the second opening of the air duct assembly is connected to the first air supply outlet, and the third opening of the air duct assembly is connected to the second air supply outlet.

[0016] Further, the air-conditioning indoor unit includes a heat exchanger, which is arranged between the second opening and the first air supply outlet; or, the heat exchanger is arranged between the third opening and the second air supply outlet; or, the air-conditioning indoor unit includes two heat exchangers, one heat exchanger is arranged between the second opening and the first air supply outlet, and the other heat exchanger is arranged between the third opening and the second air supply outlet.

[0017] 19. The ventilator of claim 18, wherein the at least one ventilator is configured to direct the flow of air from one of the first and second ventilator portions of the ventilator to the outside of the ventilator, and the at least one ventilator is configured to direct the flow of air from one of the first and second ventilator portions of the ventilator to the outside of the ventilator portion.

[0018] During specific implementation, when the air duct component takes in air from the bottom and discharges air from the top, that is, when the air duct component takes in air from the third opening and discharges air from the second opening, at least part of the first volute is in the first air guiding position. At this time, in addition to entering the second air duct from the second opening, the gas also enters the first air duct from the first opening, and enters the second air duct under the guiding action of at least part of the first volute, and is blown upward from the second opening; at the same time, at least part of the third volute is in the second initial position. At this time, the second volute component serves as a complete second air duct wall without gaps, blocking the gas from the fourth volute and limiting the flow path of the gas.

[0019] During specific implementation, when the air duct assembly takes in air from the top and discharges air from the bottom, that is, when the air duct assembly takes in air from the second opening and discharges air from the third opening, at least part of the third volute is in the second air guiding position. At this time, in addition to entering the second air duct from the second opening, the gas also enters the third air duct from the fourth opening, and enters the second air duct under the guiding action of at least part of the third volute, and is blown downward from the third opening; at the same time, at least part of the first volute is in the first initial position. At this time, the first volute component serves as a complete first air duct wall without gaps, blocking the gas and the second volute, thereby limiting the flow path of the gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 A schematic diagram showing an embodiment of an air duct assembly according to the present invention is shown;

[0022] Figure 2 A schematic diagram showing a first volute component and a second volute of an air duct assembly according to the present invention is shown;

[0023] Figure 3 A schematic diagram showing a second volute component and a fourth volute of an air duct assembly according to the present invention is shown;

[0024] Figure 4 A schematic diagram showing an embodiment of an air-conditioning indoor unit according to the present invention is shown;

[0025] Figure 5 A schematic diagram showing an upper air outlet of an embodiment of an air conditioner indoor unit according to the present invention is shown;

[0026] Figure 6 A schematic diagram showing downward airflow of an embodiment of an air conditioner indoor unit according to the present invention is shown;

[0027] Figure 7 A schematic diagram showing another embodiment of an air-conditioning indoor unit according to the present invention is shown.

[0028] The above drawings include the following reference numerals:

[0029] 1. Fan blade; 11. Second air duct; 12. Second opening; 13. Third opening;

[0030] 2. First air duct assembly; 21. First volute component; 211. First volute; 212. Volute portion; 213. First volute portion; 214. Second volute portion; 215. Third volute portion; 216. First communication port; 217. Second communication port; 218. Third communication port; 219. First volute tongue; 22. Second volute; 23. First air duct; 24. First opening; 25. First drive member;

[0031] 3. Second air duct assembly; 31. Second volute component; 311. Third volute; 312. Volute segment; 313. First volute segment; 314. Second volute segment; 315. Third volute segment; 316. Fourth communication port; 317. Fifth communication port; 318. Sixth communication port; 319. Second volute tongue; 32. Fourth volute; 33. Third air duct; 34. Fourth opening; 35. Second drive member;

[0032] 41. First plane; 42. Second plane; 43. First section; 44. Second section; 45. Third section; 46. Fourth section; 47. Fifth section; 48. Sixth section;

[0033] 51. First surface; 52. Second surface; 53. Third surface; 54. Fourth surface; 55. Fifth surface; 56. Sixth surface;

[0034] 6. Housing; 61. First air outlet; 62. Second air outlet;

[0035] 7. Heat exchanger. DETAILED DESCRIPTION

[0036] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0037] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present application belongs.

[0038] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0039] The present invention provides an air duct assembly, please refer to Figures 1 to 7, including a fan blade 1, the air duct assembly also includes: a first air duct assembly 2, including a first volute component 21 and a second volute 22, the first volute component 21 including a first volute 211 and a first volute tongue 219, the first volute tongue 219 is located at a first end of the first volute component 21; a first air duct 23 and a first opening 24 are formed between the first volute component 21 and the second volute 22, the first end of the first air duct 23 is a closed end, and the second end of the first air duct 23 is the first opening 24; a second air duct assembly 3, including a second volute component 31 and a fourth volute 32, the second volute component 31 including a third volute 311 and a second volute tongue 319, the second volute tongue 319 is located at a second end of the second volute component 31; the second volute component 31 and the first volute component 21 are spaced apart to form a second air duct 11 for arranging the fan blade 1; a second opening 12 for upward air supply is formed between the first end of the first volute component 21 and the first end of the second volute component 31, A third opening 13 for downward air supply is formed between the second volute component 31 and the fourth volute 32; a third air duct 33 and a fourth opening 34 are formed between the second volute component 31 and the fourth volute 32, the first end of the third air duct 33 is the fourth opening 34, and the second end of the third air duct 33 is a closed end; wherein, at least a portion of the first volute 211 is movably configured to switch between a first initial position and a first wind-guiding position, when at least a portion of the first volute 211 is in the first initial position, the first volute component 21 is a first air duct wall for blocking wind; when at least a portion of the first volute 211 is in the first wind-guiding position, the gas in the first air duct 23 is guided into the second air duct 11; at least a portion of the third volute 311 is movably configured to switch between a second initial position and a second wind-guiding position, when at least a portion of the third volute 311 is in the second initial position, the second volute component 31 is a second air duct wall for blocking wind; when at least a portion of the third volute 311 is in the second wind-guiding position, the gas in the third air duct 33 is guided into the second air duct 11.

[0040] The air duct assembly of the present invention includes a fan blade 1, a first air duct assembly 2 and a second air duct assembly 3. The first air duct assembly 2 and the second air duct assembly 3 are arranged at intervals, and the fan blade 1 is arranged between the first air duct assembly 2 and the second air duct assembly 3. The fan blade 1 is rotatable along a first preset direction so that the air flow is driven through the air duct assembly by the rotating fan blade 1; the air duct assembly is configured by arranging the first volute tongue 219 at the first end of the first volute component 21, the second volute tongue 319 at the second end of the second volute component 31, and at least part of the first volute 211 and at least part of the third volute 311 are both configured to be movable. On the basis of not changing the rotation direction of the fan blade 1, by opening and closing at least part of the first volute 211 and at least part of the third volute 311, the air duct assembly realizes downward air intake and upward air outlet, as well as upward air intake and downward air outlet two air outlet modes, thereby enabling the air conditioner indoor unit to realize two air outlet modes, thereby solving the problem of a single air supply mode of the air conditioner indoor unit in the prior art.

[0041] During specific implementation, when the air duct assembly takes in air from the bottom and discharges air from the top, that is, when the air duct assembly takes in air from the third opening 13 and discharges air from the second opening 12, at least part of the first volute 211 is in the first air guiding position. At this time, in addition to entering the second air duct from the second opening 12, the gas also enters the first air duct from the first opening 24, and enters the second air duct under the guiding action of at least part of the first volute 211, and is blown upward from the second opening 12; at the same time, at least part of the third volute 311 is in the second initial position. At this time, the second volute component serves as a complete second air duct wall without gaps, blocking the gas from the fourth volute, thereby limiting the flow path of the gas.

[0042] During specific implementation, when the air duct assembly takes in air from the top and discharges air from the bottom, that is, when the air duct assembly takes in air from the second opening 12 and discharges air from the third opening 13, at least part of the third volute 311 is in the second air guiding position. At this time, in addition to entering the second air duct from the second opening 12, the gas also enters the third air duct from the fourth opening 34, and enters the second air duct under the guiding action of at least part of the third volute 311, and is blown downward from the third opening 13; at the same time, at least part of the first volute 211 is in the first initial position. At this time, the first volute component serves as a complete first air duct wall without gaps, blocking the gas and the second volute, thereby limiting the flow path of the gas.

[0043] It should be noted that the first end of each component is located on the side of the second end thereof close to the first air outlet 61 of the air conditioner indoor unit.

[0044] Specifically, the fan blade 1 is a cross-flow fan blade.

[0045] In this embodiment, the first volute 211 includes a plurality of volute portions 212, which are sequentially arranged in a direction from the closed end of the first air duct 23 to the first opening 24, and each volute portion 212 is rotatably arranged so that each volute portion 212 switches between a first initial position and a first air-guiding position; and / or, the third volute 311 includes a plurality of volute segments 312, which are sequentially arranged in a direction from the fourth opening 34 to the closed end of the third air duct 33, and each volute segment 312 is rotatably arranged so that each volute segment 312 switches between a second initial position and a second air-guiding position. Such an arrangement can guide the flow through the plurality of volute portions 212, thereby improving the air intake efficiency and ensuring the upward air outlet effect; and guide the flow through the plurality of volute segments 312, thereby improving the air intake efficiency and ensuring the downward air outlet effect.

[0046] In this embodiment, the air duct assembly includes a plurality of first driving members 25 , which are drivingly connected to the plurality of volute portions 212 , so that the first driving members 25 drive the corresponding volute portions 212 to rotate.

[0047] Optionally, the first driving member 25 is a motor.

[0048] In this embodiment, the air duct assembly includes a plurality of second driving members 35 , which are drivingly connected to the plurality of volute segments 312 , so that the second driving members 35 drive the corresponding volute segments 312 to rotate.

[0049] Optionally, the second driving member 35 is a motor.

[0050] In this embodiment, the plurality of volute portions 212 include a first volute portion 213, a second volute portion 214, and a third volute portion 215. In the direction from the closed end of the first air duct 23 to the first opening 24, the first volute portion 213, the second volute portion 214, and the third volute portion 215 are arranged in sequence; when the first volute portion 213, the second volute portion 214, and the third volute portion 215 are all in the first initial position, the first end of the first volute portion 213 abuts against the first volute tongue 219, and the second end of the first volute portion 213 abuts against the first end of the second volute portion 214 The second end of the second volute portion 214 abuts against the first end of the third volute portion 215, and the second end of the third volute portion 215 and the second end of the second volute 22 form a first opening 24; when the first volute portion 213, the second volute portion 214 and the third volute portion 215 are all in the first air-guiding position, a first connecting port 216 is formed between the first volute portion 213 and the first volute tongue 219, a second connecting port 217 is formed between the first volute portion 213 and the second volute portion 214, and a third connecting port 218 is formed between the second volute portion 214 and the third volute portion 215.

[0051] In this embodiment, there is a first preset angle between the first initial position of the first volute portion 213 and the first wind-guiding position, and when the first volute portion 213 rotates from the first initial position toward the first wind-guiding position, the first end of the first volute portion 213 rotates toward the fan blade 1; wherein the first preset angle is greater than or equal to 7° and less than or equal to 12°; and / or, there is a second preset angle between the first initial position of the second volute portion 214 and the first wind-guiding position, and when the second volute portion 214 rotates from the first initial position toward the first wind-guiding position, the first end of the second volute portion 214 rotates toward the fan blade 1; wherein the second preset angle is greater than or equal to 12° and less than or equal to 18°; and / or, there is a third preset angle between the first initial position of the third volute portion 215 and the first wind-guiding position, and when the third volute portion 215 rotates from the first initial position toward the first wind-guiding position, the first end of the third volute portion 215 rotates toward the fan blade 1; wherein the third preset angle is greater than or equal to 22° and less than or equal to 28°. Such a setting can ensure the air inlet diversion effect.

[0052] Preferably, the first preset angle is equal to 10°, the second preset angle is equal to 15°, and the third preset angle is equal to 25°.

[0053] In this embodiment, the plurality of volute segments 312 include a first volute segment 313, a second volute segment 314, and a third volute segment 315. In the direction from the fourth opening 34 to the closed end of the third air duct 33, the first volute segment 313, the second volute segment 314, and the third volute segment 315 are sequentially arranged; when the first volute segment 313, the second volute segment 314, and the third volute segment 315 are all in the second initial position, the fourth opening 34 is formed between the first end of the first volute segment 313 and the first end of the fourth volute 32, and the second end of the first volute segment 313 is adjacent to the second volute segment 315. 14, the first end of the second volute segment 314 abuts against the first end of the third volute segment 315, and the second end of the third volute segment 315 abuts against the second volute tongue 319; when the first volute segment 313, the second volute segment 314 and the third volute segment 315 are all in the second air-guiding position, a fourth connecting port 316 is formed between the first volute segment 313 and the second volute segment 314, a fifth connecting port 317 is formed between the second volute segment 314 and the third volute segment 315, and a sixth connecting port 318 is formed between the third volute segment 315 and the second volute tongue 319.

[0054] In this embodiment, there is a fourth preset angle between the second initial position and the second wind-guiding position of the first volute segment 313, and when the first volute segment 313 rotates from the second initial position toward the second wind-guiding position, the second end of the first volute segment 313 rotates toward the fan blade 1; wherein the fourth preset angle is greater than or equal to 22° and less than or equal to 28°; and / or, there is a fifth preset angle between the second initial position and the second wind-guiding position of the second volute segment 314, and when the second volute segment 314 rotates from the second initial position toward the second wind-guiding position, the second end of the second volute segment 314 rotates toward the fan blade 1; wherein the fifth preset angle is greater than or equal to 12° and less than or equal to 18°; and / or, there is a sixth preset angle between the second initial position and the second wind-guiding position of the third volute segment 315, and when the third volute segment 315 rotates from the second initial position toward the second wind-guiding position, the second end of the third volute segment 315 rotates toward the fan blade 1; wherein the sixth preset angle is greater than or equal to 7° and less than or equal to 12°. Such a setting can ensure the air inlet diversion effect.

[0055] Preferably, the fourth preset angle is equal to 25°, the fifth preset angle is equal to 15°, and the sixth preset angle is equal to 10°.

[0056] During specific implementation, when air is discharged from the top, that is, air is taken in from the third opening 13 and air is discharged from the second opening 12, the first volute portion 213, the second volute portion 214 and the third volute portion 215 are all in the first air guiding position. At this time, in addition to entering the second air duct from the second opening 12, the gas also enters the first air duct from the first opening 24, and enters the second air duct through the first connecting port 216, the second connecting port 217 and the third connecting port 218 under the guiding action of the first volute portion 213, the second volute portion 214 and the third volute portion 215, and is blown upward from the second opening 12; at the same time, the first volute segment 313, the second volute segment 314 and the third volute segment 315 are all in the second initial position. At this time, the second volute component serves as a complete second air duct wall without gaps, blocking the gas from the fourth volute to limit the flow path of the gas.

[0057] During specific implementation, when the air is discharged, that is, when the air is taken in from the second opening 12 and the air is discharged from the third opening 13, the first volute section 313, the second volute section 314 and the third volute section 315 are all in the second air guiding position. At this time, in addition to entering the second air duct from the third opening 13, the gas also enters the third air duct from the fourth opening 34, and enters the second air duct through the fourth connecting port 316, the fifth connecting port 317 and the sixth connecting port 318 under the guiding action of the first volute section 313, the second volute section 314 and the third volute section 315, and is blown downward from the third opening 13; at the same time, the first volute part 213, the second volute part 214 and the third volute part 215 are all in the first initial position. At this time, the first volute component serves as a complete first air duct wall without gaps, blocking the gas from the second volute to limit the flow path of the gas.

[0058] In this embodiment, the first end of the first volute component 21, the first end of the second volute component 31, and the first end of the fourth volute 32 are all located on the first plane 41; the first volute component 21 has a first surface 51, the first volute component 21 has a third surface 53 and a fourth surface 54 arranged opposite to each other, and the fourth volute 32 has a fifth surface 55. The second air duct 11 is formed between the first surface 51 and the third surface 53, and the third air duct 33 is formed between the fourth surface 54 and the fifth surface 55; the first end of the first surface 51 A first angle between the first tangent plane 43 and the first plane 41 is A1; wherein A1 is greater than or equal to 175° and less than or equal to 180°; and / or, a second angle between the second tangent plane 44 of the first end of the third surface 53 and the first plane 41 is A2; wherein A2 is greater than or equal to 135° and less than or equal to 145°; and / or, a third angle between the third tangent plane 45 of the first end of the fifth surface 55 and the first plane 41 is A3, and A3 is greater than or equal to 160° and less than or equal to 168°.

[0059] In specific implementation, A1 is greater than or equal to 175° and less than or equal to 180° to ensure good air inlet and outlet effects; A2 is greater than or equal to 135° and less than or equal to 145° to ensure good air outlet effects; A3 is greater than or equal to 160° and less than or equal to 168° to ensure good air induction effects.

[0060] Preferably, A2 is equal to 140°, A1 is equal to 180°, and A3 is equal to 163°.

[0061] In this embodiment, the second end of the first volute component 21, the second end of the second volute component 31, and the second end of the second volute 22 are all located on the second plane 42; the first volute component 21 has a first surface 51 and a second surface 52 arranged opposite to each other, the second volute component 31 has a third surface 53, and the second volute 22 has a sixth surface 56. The second air duct 11 is formed between the first surface 51 and the third surface 53, and the first air duct 23 is formed between the second surface 52 and the sixth surface 56; the fourth end of the first surface 51 is located between the second end of the first surface 51 and the sixth surface 56. A fourth angle between the section 46 and the second plane 42 is A4; wherein A4 is greater than or equal to 135° and less than or equal to 145°; and / or, a fifth angle between the fifth section 47 of the second end of the third surface 53 and the second plane 42 is A5; wherein A5 is greater than or equal to 175° and less than or equal to 180°; and / or, a sixth angle between the sixth section 48 of the second end of the sixth surface 56 and the second plane 42 is A6; wherein A6 is greater than or equal to 160° and less than or equal to 168°.

[0062] In specific implementation, A4 greater than or equal to 135° and less than or equal to 145° can ensure good air outlet effect, A5 greater than or equal to 175° and less than or equal to 180° can ensure good air inlet and outlet effects, and A6 greater than or equal to 160° and less than or equal to 168° can ensure good air induction effect.

[0063] Preferably, A4 is equal to 140V, A5 is equal to 180°, and A6 is equal to 163°.

[0064] In this embodiment, the first end of the first volute component 21, the first end of the second volute component 31, and the first end of the fourth volute 32 are all located in the first plane 41. When at least a portion of the third volute 311 is in the second initial position, the distance between the first end of the first volute component 21 and the first end of the second volute component 31 is L2, and the distance between the first end of the second volute component 31 and the first end of the fourth volute 32 is L1; wherein L1 / (L1+L2)=0.35-0.4; and / or, the second end of the first volute component 21, the second end of the second volute component 31, and the second end of the second volute 22 are all located in the second plane 42. When at least a portion of the first volute 211 is in the first initial position, the distance between the second end of the first volute component 21 and the second end of the second volute component 31 is L4, and the distance between the second end of the first volute component 21 and the second end of the second volute 22 is L3; wherein L3 / (L3+L4)=0.35-0.4.

[0065] In specific implementation, the settings of L1 / (L1+L2)=0.35-0.4 and L3 / (L3+L4)=0.35-0.4 ensure good air inlet and outlet effects.

[0066] Preferably, L1 / (L1+L2)=0.38, L3 / (L3+L4)=0.38.

[0067] Specifically, the first air duct assembly 2 and the second air duct assembly 3 are spaced apart with the center of the fan blade as a reference point and rotated by an angle B, wherein B is greater than or equal to 160° and less than or equal to 200°. Preferably, B is equal to 180°.

[0068] In specific implementation, the first volute component 21 and the second volute component 22 in the first air duct assembly 2, and the second volute component 31 and the fourth volute component 32 in the second air duct assembly 3 can adopt the same or different profile designs, preferably the same profile design.

[0069] The present invention also provides an air conditioner indoor unit, please refer to Figures 4 to 7 , including a shell 6 and an air duct assembly, wherein the shell 6 includes a first air supply outlet 61 for supplying air upward and a second air supply outlet 62 for supplying air downward; the air duct assembly is the air duct assembly in the above embodiment, the second opening 12 of the air duct assembly is connected to the first air supply outlet 61, and the third opening 13 of the air duct assembly is connected to the second air supply outlet 62.

[0070] Specifically, the air-conditioning indoor unit includes a heat exchanger 7, which is arranged between the second opening 12 and the first air supply outlet 61; or, the heat exchanger 7 is arranged between the third opening 13 and the second air supply outlet 62; or, the air-conditioning indoor unit includes two heat exchangers 7, one heat exchanger 7 is arranged between the second opening 12 and the first air supply outlet 61, and the other heat exchanger 7 is arranged between the third opening 13 and the second air supply outlet 62.

[0071] In specific implementation, the air-conditioning indoor unit includes two heat exchangers 7, one heat exchanger 7 is arranged between the second opening 12 and the first air supply port 61, and the other heat exchanger 7 is arranged between the third opening 13 and the second air supply port 62. This implementation method can improve the heat exchange efficiency of the heat exchanger, coordinate the appearance ratio of the whole machine, and ensure that the air volume of the upper and lower air outlets is equivalent.

[0072] The present application solves the following technical problems: through the double-layer volute structure of the first air duct assembly and the second air duct assembly, the air supply effect of switching the air inlet and outlet is achieved in the same air duct, solving the single air inlet and outlet circulation mode of the existing air conditioner. In the heating mode, a carpet-style circulation air supply mode is realized by taking in air from the first air supply port 61 and blowing out the air from the second air supply port 62, so that the room is quickly and evenly heated up, solving the problem of the existing method of relying on the air guide plate to guide the hot air from the upper air outlet downward, but making it difficult for the hot air to fall to the ground. In the cooling mode, a shower-style circulation air supply mode is realized by taking in air from the second air supply port 62 and blowing out the air from the first air supply port 61, so that the room is quickly and evenly cooled down, solving the problem of the existing fixed single air inlet.

[0073] The beneficial effects of the present application are as follows: by adopting a double-layer volute structure for the first air duct assembly and the second air duct assembly, a reversible air outlet effect can be achieved, that is, cold air enters the first air supply outlet 61 from the second air supply outlet 62 and is blown out, and hot air enters the second air supply outlet 62 from the first air supply outlet 61 and is blown out. Compared with traditional air conditioners, the air supply forms are diverse, and large air flow circulation in the entire room can be achieved, with strong comfort and fast heat exchange speed, achieving a comfortable and energy-saving effect.

[0074] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0075] The air duct assembly of the present invention includes a fan blade 1, a first air duct assembly 2 and a second air duct assembly 3. The first air duct assembly 2 and the second air duct assembly 3 are arranged at intervals, and the fan blade 1 is arranged between the first air duct assembly 2 and the second air duct assembly 3. The fan blade 1 is rotatable along a first preset direction so that the air flow is driven through the air duct assembly by the rotating fan blade 1; the air duct assembly is configured by arranging the first volute tongue 219 at the first end of the first volute component 21, the second volute tongue 319 at the second end of the second volute component 31, and at least part of the first volute 211 and at least part of the third volute 311 are both configured to be movable. On the basis of not changing the rotation direction of the fan blade 1, by opening and closing at least part of the first volute 211 and at least part of the third volute 311, the air duct assembly realizes downward air intake and upward air outlet, as well as upward air intake and downward air outlet two air outlet modes, thereby enabling the air conditioner indoor unit to realize two air outlet modes, thereby solving the problem of a single air supply mode of the air conditioner indoor unit in the prior art.

[0076] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0077] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0078] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. An air duct assembly, comprising a fan blade (1), characterized in that: The air duct assembly further includes: A first air duct assembly (2) comprises a first volute component (21) and a second volute (22), wherein the first volute component (21) comprises a first volute (211) and a first volute tongue (219), wherein the first volute tongue (219) is located at a first end of the first volute component (21); a first air duct (23) and a first opening (24) are formed between the first volute component (21) and the second volute (22), wherein the first end of the first air duct (23) is a closed end, and the second end of the first air duct (23) is the first opening (24); A second air duct assembly (3) comprises a second volute component (31) and a fourth volute (32), wherein the second volute component (31) comprises a third volute (311) and a second volute tongue (319), wherein the second volute tongue (319) is located at the second end of the second volute component (31); the second volute component (31) and the first volute component (21) are spaced apart to form a second air duct (11) for arranging the fan blade (1); a second opening (12) is formed between the first end of the first volute component (21) and the first end of the second volute component (31), and a third opening (13) is formed between the second end of the first volute component (21) and the second end of the second volute component (31); a third air duct (33) and a fourth opening (34) are formed between the second volute component (31) and the fourth volute (32), wherein the first end of the third air duct (33) is the fourth opening (34), and the second end of the third air duct (33) is a closed end; wherein at least a portion of the first volute (211) is movably arranged to switch between a first initial position and a first wind-guiding position; when at least a portion of the first volute (211) is in the first initial position, the first volute component (21) is a first wind duct wall for shielding the wind; when at least a portion of the first volute (211) is in the first wind-guiding position, the gas in the first wind duct (23) is guided into the second wind duct (11); at least a portion of the third volute (311) is movably arranged to switch between a second initial position and a second wind-guiding position; when at least a portion of the third volute (311) is in the second initial position, the second volute component (31) is a second wind duct wall for shielding the wind; when at least a portion of the third volute (311) is in the second wind-guiding position, the gas in the third wind duct (33) is guided into the second wind duct (11); The air duct assembly has two air intake modes. Specifically, When the air duct assembly takes in air from the bottom and discharges air from the top, the air duct assembly takes in air from the third opening (13) and discharges air from the second opening (12), at least a portion of the first volute (211) is in the first air guiding position, and in addition to entering the second air duct (11) from the third opening (13), the gas also enters the first air duct (23) from the first opening (24), and enters the second air duct (11) under the guiding action of at least a portion of the first volute (211), and is blown out upward from the second opening (12); at the same time, at least a portion of the third volute (311) is in the second initial position; When the air duct assembly takes in air from the top and discharges air from the bottom, the air duct assembly takes in air from the second opening (12) and discharges air from the third opening (13), at least a portion of the third volute (311) is in the second air guiding position, and in addition to entering the second air duct (11) from the second opening (12), the gas also enters the third air duct (33) from the fourth opening (34), and enters the second air duct (11) under the guiding action of at least a portion of the third volute (311), and is blown downward from the third opening (13); at the same time, at least a portion of the first volute (211) is in the first initial position.

2. The air duct assembly according to claim 1, characterized in that: The first volute (211) comprises a plurality of volute portions (212), the plurality of volute portions (212) being arranged in sequence in a direction from the closed end of the first air duct (23) to the first opening (24), and each of the volute portions (212) being rotatably arranged so as to switch between the first initial position and the first air guide position; and / or, The third volute (311) comprises a plurality of volute segments (312), the plurality of volute segments (312) being arranged in sequence in a direction from the fourth opening (34) to the closed end of the third air duct (33), and each of the volute segments (312) being rotatably arranged so as to switch between the second initial position and the second air-guiding position.

3. The air duct assembly according to claim 2, characterized in that: The air duct assembly comprises a plurality of first driving members (25), and the plurality of first driving members (25) are drivingly connected to the plurality of volute parts (212), so that the first driving members (25) drive the corresponding volute parts (212) to rotate.

4. The air duct assembly according to claim 2, characterized in that: The plurality of volute portions (212) include a first volute portion (213), a second volute portion (214), and a third volute portion (215), wherein the first volute portion (213), the second volute portion (214), and the third volute portion (215) are sequentially arranged in a direction from the closed end of the first air duct (23) to the first opening (24); When the first volute portion (213), the second volute portion (214) and the third volute portion (215) are all in the first initial position, the first end of the first volute portion (213) abuts against the first volute tongue (219), the second end of the first volute portion (213) abuts against the first end of the second volute portion (214), the second end of the second volute portion (214) abuts against the first end of the third volute portion (215), and the second end of the third volute portion (215) and the second end of the second volute (22) form the first opening (24); When the first volute portion (213), the second volute portion (214) and the third volute portion (215) are all in the first air-guiding position, a first communication port (216) is formed between the first volute portion (213) and the first volute tongue (219), a second communication port (217) is formed between the first volute portion (213) and the second volute portion (214), and a third communication port (218) is formed between the second volute portion (214) and the third volute portion (215).

5. The air duct assembly according to claim 4, characterized in that: A first preset angle is formed between the first initial position of the first volute portion (213) and the first wind-guiding position, and when the first volute portion (213) rotates from the first initial position toward the first wind-guiding position, the first end of the first volute portion (213) rotates toward the fan blade (1); wherein the first preset angle is greater than or equal to 7° and less than or equal to 12°; and / or, A second preset angle is formed between the first initial position of the second volute portion (214) and the first wind-guiding position, and when the second volute portion (214) rotates from the first initial position toward the first wind-guiding position, the first end of the second volute portion (214) rotates toward the fan blade (1); wherein the second preset angle is greater than or equal to 12° and less than or equal to 18°; and / or, A third preset angle is formed between the first initial position and the first wind-guiding position of the third volute portion (215); when the third volute portion (215) rotates from the first initial position toward the first wind-guiding position, the first end of the third volute portion (215) rotates toward the fan blade (1); wherein the third preset angle is greater than or equal to 22° and less than or equal to 28°.

6. The air duct assembly according to claim 2, characterized in that: The plurality of volute segments (312) include a first volute segment (313), a second volute segment (314), and a third volute segment (315), and in a direction from the fourth opening (34) to the closed end of the third air duct (33), the first volute segment (313), the second volute segment (314), and the third volute segment (315) are arranged in sequence; When the first volute segment (313), the second volute segment (314) and the third volute segment (315) are all in the second initial position, the fourth opening (34) is formed between the first end of the first volute segment (313) and the first end of the fourth volute (32), the second end of the first volute segment (313) abuts against the first end of the second volute segment (314), the second end of the second volute segment (314) abuts against the first end of the third volute segment (315), and the second end of the third volute segment (315) abuts against the second volute tongue (319); When the first volute segment (313), the second volute segment (314), and the third volute segment (315) are all in the second air-guiding position, a fourth communication port (316) is formed between the first volute segment (313) and the second volute segment (314), a fifth communication port (317) is formed between the second volute segment (314) and the third volute segment (315), and a sixth communication port (318) is formed between the third volute segment (315) and the second volute tongue (319); A fourth preset angle is formed between the second initial position and the second wind-guiding position of the first volute segment (313), and when the first volute segment (313) rotates from the second initial position toward the second wind-guiding position, the second end of the first volute segment (313) rotates toward the fan blade (1); wherein the fourth preset angle is greater than or equal to 22° and less than or equal to 28°; and / or, A fifth preset angle is formed between the second initial position and the second wind-guiding position of the second volute segment (314), and when the second volute segment (314) rotates from the second initial position toward the second wind-guiding position, the second end of the second volute segment (314) rotates toward the fan blade (1); wherein the fifth preset angle is greater than or equal to 12° and less than or equal to 18°; and / or, A sixth preset angle is formed between the second initial position and the second wind-guiding position of the third volute segment (315); when the third volute segment (315) rotates from the second initial position toward the second wind-guiding position, the second end of the third volute segment (315) rotates toward the fan blade (1); wherein the sixth preset angle is greater than or equal to 7° and less than or equal to 12°.

7. The air duct assembly according to any one of claims 1 to 6, characterized in that: The first end of the first volute component (21), the first end of the second volute component (31), and the first end of the fourth volute (32) are all located in a first plane (41); The first volute component (21) has a first surface (51), the first volute component (21) has a third surface (53) and a fourth surface (54) arranged opposite to each other, the fourth volute (32) has a fifth surface (55), the second air duct (11) is formed between the first surface (51) and the third surface (53), and the third air duct (33) is formed between the fourth surface (54) and the fifth surface (55); A first angle A1 is formed between a first tangent plane (43) of a first end of the first surface (51) and the first plane (41); wherein A1 is greater than or equal to 175° and less than or equal to 180°; and / or, A second angle A2 is formed between the second tangent plane (44) of the first end of the third surface (53) and the first plane (41); wherein A2 is greater than or equal to 135° and less than or equal to 145°; and / or, A third angle between a third tangent plane (45) at the first end of the fifth surface (55) and the first plane (41) is A3, and A3 is greater than or equal to 160° and less than or equal to 168°.

8. The air duct assembly according to any one of claims 1 to 6, characterized in that: The second end of the first volute component (21), the second end of the second volute component (31), and the second end of the second volute (22) are all located in a second plane (42); The first volute component (21) has a first surface (51) and a second surface (52) arranged opposite to each other, the second volute component (31) has a third surface (53), and the second volute (22) has a sixth surface (56); the second air duct (11) is formed between the first surface (51) and the third surface (53), and the first air duct (23) is formed between the second surface (52) and the sixth surface (56); A fourth angle between a fourth tangent plane (46) at the second end of the first surface (51) and the second plane (42) is A4; wherein A4 is greater than or equal to 135° and less than or equal to 145°; and / or, A fifth angle between a fifth tangent plane (47) at the second end of the third surface (53) and the second plane (42) is A5; wherein A5 is greater than or equal to 175° and less than or equal to 180°; and / or, A sixth angle between a sixth tangent plane (48) at the second end of the sixth surface (56) and the second plane (42) is A6; wherein A6 is greater than or equal to 160° and less than or equal to 168°.

9. The air duct assembly according to any one of claims 1 to 6, characterized in that: The first end of the first volute component (21), the first end of the second volute component (31) and the first end of the fourth volute (32) are all located in a first plane (41); when at least a portion of the third volute (311) is in the second initial position, the distance between the first end of the first volute component (21) and the first end of the second volute component (31) is L2, and the distance between the first end of the second volute component (31) and the first end of the fourth volute (32) is L1; wherein L1 / (L1+L2)=0.35~0.4; and / or, The second end of the first volute component (21), the second end of the second volute component (31) and the second end of the second volute (22) are all located in a second plane (42). When at least a portion of the first volute (211) is in the first initial position, the distance between the second end of the first volute component (21) and the second end of the second volute component (31) is L4, and the distance between the second end of the first volute component (21) and the second end of the second volute (22) is L3; wherein L3 / (L3+L4)=0.35~0.

4.

10. An air conditioner indoor unit, comprising a housing (6) and an air duct assembly, characterized in that: The shell (6) includes a first air supply port (61) for supplying air upward and a second air supply port (62) for supplying air downward; the air duct assembly is the air duct assembly according to any one of claims 1 to 9, the second opening (12) of the air duct assembly is connected to the first air supply port (61), and the third opening (13) of the air duct assembly is connected to the second air supply port (62).

11. The air conditioner indoor unit according to claim 10, characterized in that: The air conditioner indoor unit comprises a heat exchanger (7), wherein the heat exchanger (7) is arranged between the second opening (12) and the first air supply port (61); or, the heat exchanger (7) is arranged between the third opening (13) and the second air supply port (62); or The air conditioner indoor unit comprises two heat exchangers (7), one heat exchanger (7) is arranged between the second opening (12) and the first air supply port (61), and the other heat exchanger (7) is arranged between the third opening (13) and the second air supply port (62).

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