Double-air-duct air conditioner indoor unit and air conditioner

Abstract

The utility model relates to the technical field of air conditioners, and discloses a double-air-duct air conditioner indoor unit which comprises a shell internally provided with a first air duct and a second air duct. The fan assembly comprises a first fan and a second fan, the first fan communicates with the upper air outlet through a first air duct so as to be used for air outlet from the upper portion, and the second fan communicates with the first side air outlet and the second side air outlet through a first side air duct and a second side air duct so as to be used for supplying air to the side portion. The connecting line between the center of the second fan and the connecting position of the side air duct obtains a preset line, the connecting line between the center of the second fan and the starting position of the first air duct obtains a first air duct connecting line, and the included angle q1 between the preset line and the first air duct connecting line is smaller than or equal to 80 degrees. According to the double-air-duct air conditioner indoor unit, the two draught fans are arranged at the same time, and the air outlet effect of the air conditioner indoor unit is improved. The utility model further discloses the air conditioner.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioners, for example to a double-air-duct air conditioner indoor unit and an air conditioner. BACKGROUND

[0002] An air conditioner is a common electrical appliance for improving the indoor environment of a user, and the size of the temperature regulation capacity and the air supply mode of the air conditioner are related to the experience of the user during use of the air conditioner.

[0003] Taking a floor air conditioner as an example, at present, the shell of the floor air conditioner is provided with a front air outlet, and a fan is arranged in the shell to realize air outlet. No matter whether the air conditioner is in a heating mode, a cooling mode or a dehumidification mode, the air supply mode of the floor air conditioner is forward air supply.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

[0005] The air supply mode of the existing air conditioner is relatively single, which affects the user experience.

[0006] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present application, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. CONTENT OF THE INVENTION

[0007] In order to have a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not a general review, nor is it intended to determine key / important constituent elements or delineate the scope of protection of these embodiments, but is intended as a prelude to the detailed description below.

[0008] The embodiments of the present disclosure provide a double-air-duct air conditioner indoor unit and an air conditioner to solve the problem that the air supply mode of the air conditioner is single and affects the user experience.

[0009] In some embodiments, the double-duct air conditioner indoor unit comprises: a housing, internally provided with a first air duct and a second air duct, the second air duct comprising a first side air duct and a second side air duct, an upper air outlet being provided on an upper portion of the housing and communicating with the first air duct, first and second side air outlets being provided on side portions of the housing and respectively communicating with the first and second side air ducts; a fan assembly comprising a first fan and a second fan, the first fan communicating with the upper air outlet through the first air duct for upper air outlet, the second fan communicating with the first and second side air outlets through the first and second side air ducts respectively for side air supply, and a side air duct connecting position being provided between the first and second side air ducts, the first side air duct comprising a first air duct starting position, a preset line being obtained by connecting the center of the second fan with the side air duct connecting position, a first air duct connecting line being obtained by connecting the center of the second fan with the first air duct starting position, wherein an included angle between the preset line and the first air duct connecting line is q1, and q1≤80°.

[0010] In some optional embodiments, 0°<q1≤45°.

[0011] In some optional embodiments, the second side air duct comprises a second air duct starting position, a second air duct connecting line being obtained by connecting the center of the second fan with the second air duct starting position, wherein an included angle between the preset line and the second air duct connecting line is q2, and q2≤q1.

[0012] In some optional embodiments, 0°<q2≤70°.

[0013] In some optional embodiments, 0°<q2≤30°.

[0014] In some optional embodiments, the first fan is arranged at a lower portion of the second fan.

[0015] In some optional embodiments, the first air duct is arranged at one side of the second side air duct.

[0016] In some optional embodiments, the second fan is provided with a first air duct partition plate and a second air duct partition plate at two ends thereof, the first air duct partition plate being arranged at an upper portion of the second air duct partition plate, wherein the first air duct partition plate is provided with a first air duct opening communicating with the first air duct, and the second air duct partition plate is provided with a second air duct opening communicating with the first air duct.

[0017] In some optional embodiments, the first fan comprises a centrifugal fan; and / or, the second fan comprises a cross-flow fan.

[0018] In some embodiments, the air conditioner comprises the aforementioned double-duct air conditioner indoor unit.

[0019] The dual-duct indoor air conditioning unit and air conditioner provided in this disclosure can achieve the following technical effects:

[0020] The air conditioner indoor unit provided in this embodiment includes a housing and a fan assembly. A first air duct and a second air duct are disposed inside the housing. The first fan is connected to an upper air outlet through the first air duct for upper air delivery, and the second fan is connected to a side air outlet through the second air duct for side air delivery. This improves the diversity of air delivery modes of the air conditioner indoor unit and enhances the user experience.

[0021] Furthermore, a side air duct connection point is provided between the first and second side air ducts. The first side air duct includes its starting position. A preset line is formed by connecting the center of the second fan to the side air duct connection point. A line is formed by connecting the center of the second fan to the starting position of the first air duct. The angle between the preset line and the first air duct connection line is q1, and q1 ≤ 80°. This improves the uniformity of airflow distribution in the indoor unit of the dual-air duct air conditioner, achieving a uniform airflow effect. At the same time, it reduces temperature differences between different locations in the room, improving comfort.

[0022] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0023] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0024] Figure 1 This is a schematic diagram of the structure of a dual-duct air conditioning indoor unit provided in an embodiment of this disclosure;

[0025] Figure 2 This is a schematic diagram of another dual-duct air conditioning indoor unit provided in this embodiment;

[0026] Figure 3 This is a schematic diagram of another dual-duct air conditioning indoor unit provided in this embodiment;

[0027] Figure 4 This is a schematic diagram of another dual-duct air conditioning indoor unit provided in this embodiment;

[0028] Figure 5 This is a schematic diagram of another dual-duct air conditioning indoor unit provided in this embodiment;

[0029] Figure 6 This is a schematic diagram of another dual-duct air conditioning indoor unit provided in this embodiment;

[0030] Figure 7 This is a schematic diagram of another dual-duct air conditioning indoor unit provided in this embodiment;

[0031] Figure 8 yes Figure 7 Enlarged view of a selected portion;

[0032] Figure 9 This is a schematic diagram of another dual-duct air conditioning indoor unit provided in this embodiment;

[0033] Figure 10 This is a schematic diagram of another dual-duct air conditioning indoor unit provided in this embodiment;

[0034] Figure 11 This is a schematic diagram of another dual-duct air conditioning indoor unit provided in this embodiment;

[0035] Figure 12 This is a schematic diagram of another dual-duct air conditioning indoor unit provided in this embodiment;

[0036] Figure 13 This is a schematic diagram of another dual-duct air conditioning indoor unit provided in this embodiment;

[0037] Figure 14 This is a schematic diagram of another dual-duct air conditioning indoor unit provided in this embodiment;

[0038] Figure 15 This is a schematic diagram of another dual-duct air conditioning indoor unit provided in this embodiment;

[0039] Figure 16 This is a schematic diagram of another dual-duct air conditioning indoor unit provided in this embodiment;

[0040] Figure 17 This is a schematic diagram of another dual-duct air conditioning indoor unit provided in this embodiment;

[0041] Figure 18 yes Figure 17 A magnified view of a selected portion;

[0042] Figure 19 yes Figure 17 Another enlarged view of the selected portion;

[0043] Figure 20 This is a schematic diagram of another dual-duct air conditioning indoor unit provided in this embodiment;

[0044] Figure 21 This is a schematic diagram of another dual-duct air conditioning indoor unit provided in this embodiment;

[0045] Figure 22 This is a schematic diagram of another dual-duct air conditioning indoor unit provided in this embodiment;

[0046] Figure 23 This is a schematic diagram of the structure of a heat exchanger provided in an embodiment of this disclosure;

[0047] Figure 24 This is a schematic diagram of another heat exchanger provided in an embodiment of this disclosure;

[0048] Figure 25 This is a schematic diagram of another dual-duct air conditioning indoor unit provided in this embodiment.

[0049] Figure label:

[0050] 1: First fan; 11: First air duct; 101: Upper air outlet;

[0051] 2: Second fan; 21: First side air duct; 22: Second side air duct; 23: Main air outlet; 201: First side air outlet; 202: Second side air outlet; 221: Outer wall of the second side air duct; 222: Outer wall of the casing; 223: First position; 2231: First dividing point; 2232: Second dividing point; 224: First side air duct plate; 225: Second side air duct plate; 2251: First side plate section; 2252: Second side... 226: Air baffle assembly; 2261: First guide vane; 2262: Second guide vane; 2263: Third guide vane; 2264: Air distribution front end; 2271: Inner wall of the first guide vane; 2272: Inner wall of the second guide vane; 228: Guide vane connecting plate; 2281: First guide vane end; 2282: Second guide vane end; 229: Side air duct connection position; 2101: First air duct starting position; 2201: Second air duct starting position;

[0052] 31: First air duct partition; 301: First air duct opening; 302: Second air duct opening; 3021: First edge; 3022: Second edge; 3023: First starting position; 311: Side of third partition; 3111: Stop protrusion; 32: Second air duct partition; 321: Side of first partition; 3211: Motor mounting slot; 322: Side of second partition; 3221: Fan blade mounting slot; 323: Edge of partition;

[0053] 4: Heat exchanger; 41: External heat exchange side; 42: Internal heat exchange side; 421: First heat exchange position; 431: First heat exchange section; 432: Second heat exchange section; 433: First heat exchange segment; 434: Second heat exchange segment; 435: First heat exchange connection position; 436: Middle heat exchange segment;

[0054] 51: First side shell portion; 52: Second side shell portion. Detailed Implementation

[0055] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0056] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0057] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.

[0058] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0059] Unless otherwise stated, the term "multiple" means two or more.

[0060] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0061] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0062] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0063] This disclosure provides a dual-duct air conditioning indoor unit, which can also be called an air conditioning indoor unit, a floor-standing air conditioning indoor unit, a cabinet air conditioning indoor unit, a dual-fan air conditioning indoor unit, or a dual-fan cabinet air conditioning indoor unit, etc.

[0064] The dual-duct air conditioner indoor unit provided in this embodiment includes a housing and a fan assembly. The housing has a first air duct 11 and a second air duct inside. The upper part of the housing has an upper air outlet 101 connected to the first air duct 11, and the side part of the housing has a side air outlet connected to the second air duct. The fan assembly includes a first fan 1 and a second fan 2. The first fan 1 is connected to the upper air outlet 101 through the first air duct 11 for upper air outlet, and the second fan 2 is connected to the side air outlet through the second air duct for side air outlet.

[0065] Optionally, the first fan 1 is located below the second fan 2, and the first air duct 11 is located on one side of the second air duct.

[0066] The dual-duct air conditioner indoor unit provided in this embodiment has a casing with an upper air outlet 101 located at the top or upper part and a side air outlet located on the side. Optionally, the upper air outlet 101 can deliver air from the top to the front, and the side air outlet is located in the middle or lower middle part of the casing, which can deliver air from the middle of the casing to the front or side. Optionally, the upper air outlet 101 is cylindrical, and the side air outlet is elongated. It can be seen that the dual-duct air conditioner indoor unit provided in this embodiment achieves a multi-dimensional air delivery mode, improving the user experience.

[0067] The dual-duct air conditioner indoor unit provided in this embodiment has a first air duct 11 and a second air duct inside its casing. The first air duct 11 is connected to the upper air outlet 101, and a first fan 1 is disposed within the first air duct 11. The second air duct is connected to the side air outlet, and a second fan 2 is disposed within the second air duct. In this way, by distributing air to the upper air outlet 101 and the side air outlet respectively in different air ducts and using different fans, the air volume and air temperature of the two air outlets are not affected by each other.

[0068] Optionally, the first air duct 11 and the second air duct are isolated from each other. The air blown by the first fan 1 is only delivered through the upper air outlet 101, and the air blown by the second fan 2 is only delivered through the side air outlet. In this way, the air volume of the upper air outlet 101 and the side air outlet can be controlled separately by adjusting the speed or gear of the first fan 1 and the second fan 2, thereby improving the diversity of air output of the dual-duct air conditioning indoor unit.

[0069] In this embodiment of the present disclosure, the first air duct 11 is disposed on one side of the second air duct, such as... Figures 2 to 10 As shown. The first air duct 11 is arranged vertically, and the second air duct is also arranged vertically. Of the two vertically arranged air ducts, the first air duct 11 is located on one side of the second air duct. Optionally, the first air duct 11 is located on one side of the outer wall of the second air duct.

[0070] Optionally, the side air outlet includes a first side air outlet 201 and a second side air outlet 202, and the second air duct includes a first side air duct 21 connected to the first side air outlet 201 and a second side air duct 22 connected to the second side air outlet 202, wherein the first air duct 11 is disposed on one side of the second side air duct 22. Figure 2 and Figure 3 As shown.

[0071] The first side air outlet 201 is a vertical strip-shaped air outlet, and similarly, the second side air outlet 202 is a vertical strip-shaped air outlet. Optionally, the opening length of the first side air outlet 201 is the same as the opening length of the second side air outlet 202, and / or, the opening width of the first side air outlet 201 is the same as the opening width of the second side air outlet 202. Optionally, the opening length of the first side air outlet 201 and the second side air outlet 202 is the same as the length of the second fan 2.

[0072] Optionally, the extension length of the first side air duct 21 is less than or equal to the extension length of the second side air duct 22. It is understood that the extension length of the first side air duct 21 is... Figure 3 The length indicated by the dashed arrow within the first side air duct 21 is similar to the extension length of the second side air duct 22. Figure 3 The length indicated by the dashed arrow within the second side air duct 22. Optionally, the first side air duct 21 and / or the second side air duct 22 are arc-shaped air ducts.

[0073] Optionally, the second fan 2 is positioned closer to the first side air duct 21. This results in a larger reserved space on one side of the second side air duct 22, allowing the first air duct 11 to be opened on the side of the second side air duct 22 with the larger reserved space. This increases the opening area of ​​the first air duct 11 and increases the air volume of the upper air outlet 101.

[0074] Optionally, the second fan 2 is provided with a first air duct baffle 31 and a second air duct baffle 32 at both ends. The first air duct baffle 31 is located above the second air duct baffle 32. The first air duct baffle 31 has a first air duct opening 301 that communicates with the first air duct 11, and the second air duct baffle 32 has a second air duct opening 302 that communicates with the first air duct 11. Figure 4 As shown.

[0075] The first air duct partition 31 and the second air duct partition 32, located at both ends of the second fan 2, separate the first air duct 11 from the second air duct. The first air duct partition 31 and the second air duct partition 32 can serve as horizontal end plates at both ends of the second air duct. The first air duct partition 31 has a first air duct opening 301 communicating with the first air duct 11, and the second air duct partition 32 has a second air duct opening 302 communicating with the first air duct 11. Thus, the air blown by the first fan 1 passes sequentially from bottom to top through the second air duct opening 302, the first air duct 11, and the first air duct opening 301 before being discharged from the upper air outlet 101.

[0076] Optionally, the first air duct baffle 31 and / or the second air duct baffle 32 are arranged horizontally within the housing, such as... Figure 4 As shown. Optionally, the first air duct opening 301 is formed at a position where the first air duct 11 of the first air duct partition 31 extends vertically upward, and the opening area of ​​the first air duct opening 301 is greater than or equal to 2 / 3 of the cross-sectional area of ​​the first air duct 11; similarly, the second air duct opening 302 is formed at a position where the first air duct 11 of the second air duct partition 32 extends vertically downward, and the opening area of ​​the second air duct opening 302 is greater than or equal to 2 / 3 of the cross-sectional area of ​​the first air duct 11. In this way, by forming the first air duct opening 301 and the second air duct opening 302 as large as possible on the first air duct partition 31 and the second air duct partition 32 respectively, the wind resistance of the first air duct opening 301 and the second air duct opening 302 is reduced.

[0077] Optionally, the first air duct opening 301 receives a first projection in the vertical direction, and the second air duct opening 302 receives a second projection in the vertical direction, wherein the first projection overlaps with the second projection; or, the first projection covers the second projection.

[0078] A first air duct opening 301 is formed in the upper part of the first air duct partition 31, and a second air duct opening 302 is formed in the lower part of the second air duct partition 32. The first air duct opening 301 receives a first projection in a vertical direction, and the second air duct opening 302 receives a second projection in a vertical direction. The first projection and the second projection overlap, so that the first air duct opening 301 and the second air duct opening 302 have the same size and shape. Alternatively, the first projection covers the second projection, so that the opening area of ​​the first air duct opening 301 is larger than the opening area of ​​the second air duct opening 302, reducing the air resistance of the air flowing out of the second air duct opening 302 and then back through the first air duct opening 301.

[0079] Optionally, the outer wall 221 of the second side air duct and the outer wall 222 of the casing of the second fan 2 near the second side air duct 22 form a first outer wall. The first outer wall includes a first position 223 with a spacing smaller than a preset spacing. The casing includes a first side shell portion 51 near the first air duct 11, wherein the second air duct opening 302 is opened from the first position 223 toward the first side shell portion 51. Figure 7 As shown.

[0080] Optionally, the outer wall 222 of the casing can be the outer wall of the inlet duct volute of the second fan 2. For example, when the second fan is a cross-flow fan, the outer wall 222 of the casing can be the outer wall of the duct volute of the cross-flow fan.

[0081] The outer wall 221 of the second side air duct Figure 5 As shown by the bolded lines, the outer wall 222 of the casing of the second fan 2 near the second side air duct 22 is as follows: Figure 6 The bolded lines indicate that the outer wall 221 of the second side air duct and the outer wall 222 of the casing of the second fan 2 near the second side air duct 22 form a first outer wall. The first outer wall includes a first position 223 with a spacing smaller than a preset spacing, as shown in the figure. Figure 7 As shown, the second air duct opening 302 on the second air duct partition 32 is opened from the first position 223 toward the first side shell portion 51 of the housing. In this way, a generally flared second air duct opening 302 is obtained, which reduces the air resistance of the second air duct opening 302.

[0082] Optionally, the first position 223 is located at the point where the spacing between the first outer walls is smallest, or one end of the first position 223 is at the bend of the outer wall 222 of the casing. This results in a second air duct opening 302 that is approximately flared. Figure 7 As shown.

[0083] Optionally, the first position 223 of the first outer wall includes a first dividing point 2231 near the second side air duct 22 and a second dividing point 2232 away from the second side air duct 22, wherein the first outer wall includes a first side air duct plate 224 extending from the first dividing point 2231 toward the first side shell portion 51 and a second side air duct plate 225 extending from the second dividing point 2232 toward the first side shell portion 51. Figure 7 and Figure 8 As shown.

[0084] Optionally, the second dividing point 2232 is the bend in the outer wall 222 of the housing. Divided by the first dividing point 2231 and the second dividing point 2232, the first outer wall includes a first side air duct plate 224 extending from the first dividing point 2231 towards the first side shell portion 51, such as... Figure 7 As shown by the bolded lines in the middle; the first outer wall also includes a second side air duct plate 225 extending from the second dividing point 2232 toward the second side shell portion 52, as shown in the image. Figure 7 The bolded lines in the middle section are shown.

[0085] Optionally, the second side air duct plate 225 obtains a first external tangent at the second dividing point 2232, wherein the angle between the first external tangent and the first side air duct plate 224 is α, and 30°≤α≤150°.

[0086] like Figure 8 As shown, the second side air duct plate 225 has a first external tangent at the second dividing point 2232. The angle α between the first external tangent and the extension line of the first side air duct plate 224 is greater than or equal to 30° and less than or equal to 150°. This makes the second air duct opening 302 flare outward from the first position 223 toward the first side shell portion 51, and the flare is as large as possible. Optionally, 30°≤a≤50°.

[0087] Optionally, the first edge 3021 of the second air duct opening 302 overlaps with the line shape of the first side air duct plate 224; and / or, a portion of the second edge 3022 of the second air duct opening 302 overlaps with the line shape of the second side air duct plate 225. Figure 9 As shown.

[0088] The first edge 3021 of the second air duct opening 302 overlaps with the line of the first side air duct plate 224. Thus, by cutting the second air duct partition 32 along the first side air duct plate 224, the first edge 3021 of the second air duct opening 302 can be obtained. At least a portion of the second edge 3022 of the second air duct opening 302 overlaps with the line of the second side air duct plate 225. For example... Figure 7 and Figure 9 As shown.

[0089] Optionally, the second side air duct plate 225 includes a first side plate segment 2251 and a second side plate segment 2252 that are bent and connected, and the first side plate segment 2251 is close to the second dividing point 2232, wherein a portion of the second edge 3022 of the second air duct opening 302 overlaps with the line of the first side plate segment 2251.

[0090] The second edge 3022 of the second air duct opening 302 partially overlaps with the line of the first side plate section 2251, or the second edge 3022 of the second air duct opening 302 completely overlaps with the line of the first side plate section 2251. In this way, the air blown out from the second air duct opening 302 does not form wind resistance and noise when passing through the outer wall of the second side air duct 22, thereby increasing the air volume of the upper air outlet 101.

[0091] Optionally, the outer wall 221 of the second side air duct and the outer wall 222 of the casing of the second fan 2 near the second side air duct 22 form the same cross-section at different positions in the vertical direction as the first outer wall.

[0092] Optionally, the linear shape and other parameters of the first air duct opening 301 on the first air duct partition 31 are the same as those of the second air duct opening 302.

[0093] Optionally, the first fan 1 includes a centrifugal fan, and the second fan 2 includes a cross-flow fan.

[0094] Optionally, the axis of the cross-flow fan is set vertically, while the axis of the centrifugal fan is set horizontally. For example... Figure 1 and Figure 2 As shown.

[0095] Optionally, the cross-section of the first air duct 11 includes the longest first length L1, and the cross-section of the second side air duct 22 includes the shortest second length L2, and the ratio of L1 to L2 is greater than or equal to a first preset value.

[0096] like Figure 10 As shown, the cross-section of the first air duct 11 includes the longest first length L1, and the cross-section of the second side air duct 22 includes the shortest second length L2, wherein the ratio of L1 to L2 is greater than or equal to a first preset value. This increases the area of ​​the first air duct 11, thereby increasing the airflow of the first air duct 11 and the airflow of the upper air outlet 101. Optionally, the first preset value is greater than or equal to 0.5.

[0097] Optionally, the first preset value is greater than or equal to 2.

[0098] In this embodiment, the first length L1 of the first air duct 11 is at least twice the second length L2 of the second side air duct 22. This increases the area and air volume of the first air duct 11.

[0099] Optionally, the cross-section of the first side air duct 21 includes the shortest third length L3, wherein the ratio of L2 to L3 is greater than or equal to a second preset value.

[0100] like Figure 10 As shown, the cross-section of the first side air duct 21 includes the shortest third length L3, wherein the ratio of L2 to L3 is greater than or equal to a second preset value. In this embodiment, the ratio of L2 to L3 is greater than or equal to the second preset value. Compared with the second side air duct 22, the first side air duct 21 has a shorter extension length and lower air resistance, while the second side air duct 22 has a longer extension length and higher air resistance. In this embodiment, the ratio of L2 to L3 is greater than or equal to the second preset value, resulting in a larger airflow in the second side air duct 22, balancing the airflow of the first side air duct 21 and the second side air duct 22. Optionally, the second preset value is greater than or equal to 1.

[0101] Optionally, the housing includes a first side shell portion 51 near the first air duct 11 and a second side shell portion 52 opposite to the first side shell portion 51, and the distance between the first side shell portion 51 and the second side shell portion 52 is L4, wherein the ratio of L1 to L4 is greater than or equal to a third preset value.

[0102] In this embodiment of the present disclosure, the ratio of the first length L1 of the first air duct 11 to the distance L4 between the two shell portions of the housing is greater than or equal to a third preset value, thereby increasing the airflow of the first air duct 11. Optionally, the third preset value is greater than or equal to 0.1. Optionally, 0.1≤L1 / L4≤1, or 0.2≤L1 / L4≤0.6, or 0.2≤L1 / L4≤0.5; or 0.3≤L1 / L4≤0.5; or 0.4≤L1 / L4≤0.5. Optionally, the third preset value is 0.4.

[0103] Optionally, the first fan 1 includes a centrifugal fan with a diameter ranging from 90mm to 150mm; alternatively, the centrifugal fan has a diameter of 125mm. Optionally, the second fan 2 includes a cross-flow fan with a diameter ranging from 200mm to 450mm; alternatively, the cross-flow fan has a diameter of 300mm. This increases the overall airflow from the multiple air outlets of the dual-duct indoor unit of the air conditioner.

[0104] Optionally, a first air duct baffle 31 and a second air duct baffle 32 are provided at both ends of the second fan 2, and the second air duct baffle 32 is provided between the first fan 1 and the second fan 2.

[0105] Optionally, the first air duct assembly includes a first air duct 11 and a first fan 1 disposed within the first air duct 11, and the second air duct assembly includes a second air duct and a second fan 2 disposed within the second air duct. In this embodiment, a second air duct partition 32 is disposed between the first fan 1 and the second fan 2. Thus, the first air duct 11 and the second air duct are separated by the first air duct partition 31 and the second air duct partition 32, and the first fan 1 and the second fan 2 are also separated by the second air duct partition 32, allowing the first air duct assembly and the second air duct assembly to supply air separately, improving the controllability of the air supply volume of the first air duct assembly and the second air duct assembly.

[0106] Optionally, the first air duct partition 31 has a first air duct opening 301 that communicates with the first air duct 11, and the second air duct partition 32 has a second air duct opening 302 that communicates with the first air duct 11.

[0107] Optionally, the second fan 2 includes a second fan blade and a second drive motor for driving the second fan blade to rotate, and the second duct partition 32 includes a first partition side 321 facing the first fan 1 and a second partition side 322 facing the second fan 2, wherein the second drive motor is disposed on the first partition side 321 of the second duct partition 32.

[0108] The second drive motor is installed on the side 321 of the first partition of the second air duct partition 32. In this way, there is no need to set up a separate mounting bracket for the second drive motor. The second drive motor is fixedly installed by the second air duct partition 32, which has the function of separating air ducts, reducing the number of mounting and fixing parts inside the housing.

[0109] Optionally, the first partition side 321 of the second air duct partition 32 is provided with a motor mounting groove 3211 that matches the second drive motor. For example... Figure 11 As shown.

[0110] The first partition side 321 is provided with a motor mounting groove 3211 for mounting a second drive motor, and the shape and size of the motor mounting groove 3211 match the size of the second drive motor. Optionally, the motor mounting groove 3211 extends from the first partition side 321 toward the first fan 1, such that the motor mounting groove 3211 protrudes from the surface of the first partition side 321 and has a certain height, such as... Figure 11 As shown; or, when the thickness of the second air duct baffle 32 is sufficiently large, the motor mounting groove 3211 is recessed inward from the side 321 of the first baffle, so that the motor mounting groove 3211 is recessed into the surface of the side 321 of the first baffle and has a certain depth. In this way, the installation stability of the second drive motor in the motor mounting groove 3211 is improved.

[0111] Optionally, the second partition side 322 of the second air duct partition 32 is provided with a fan blade mounting groove 3221 for mounting a second fan blade. For example... Figure 12 and Figure 13 As shown.

[0112] The second partition plate 32 of the second air duct partition plate 32 has a fan blade mounting groove 3221 for mounting the second fan blade, and the fan blade mounting groove 3221 is located at a position corresponding to the motor mounting groove 3211. Optionally, the shape of the fan blade mounting groove 3221 matches the shape of the second fan blade, for example, the shape of the fan blade mounting groove 3221 is circular.

[0113] Optionally, the fan blade mounting groove 3221 extends from the side surface 322 of the second partition plate towards the direction of the second fan blade, such that the fan blade mounting groove 3221 protrudes from the surface of the side surface 322 of the second partition plate and has a certain height, such as... Figure 13 As shown; or, when the thickness of the second duct baffle 32 is sufficiently large, the fan blade mounting groove 3221 is recessed inward from the side 322 of the second baffle, so that the fan blade mounting groove 3221 is recessed into the surface of the side 322 of the second baffle and has a certain depth. In this way, the installation stability of the fan blade mounting groove 3221 for the second fan blade is improved.

[0114] Optionally, the dual-duct air conditioner indoor unit also includes a heat exchanger 4, which is disposed inside the casing. The first fan 1 and the second fan 2 are both disposed on the side of the heat exchanger 4. The heat exchanger 4 includes an outer heat exchange side 41 facing the air inlet of the casing and an inner heat exchange side 42 facing the fans. The second duct baffle 32 includes a baffle edge 323 facing the inner heat exchange side 42. The inner heat exchange side 42 of the heat exchanger 4 includes a first heat exchange position 421 corresponding to the baffle edge 323, and the baffle edge 323 and the first heat exchange position 421 are aligned in shape. Figure 12 As shown.

[0115] For example, the shape of the first heat exchange position 421 of the heat exchanger 4 includes a straight segment, an arc segment, and another straight segment in sequence. Correspondingly, the shape of the baffle edge 323 also includes a straight segment, an arc segment, and another straight segment of corresponding length in sequence. In this way, the distance between the first heat exchange position 431 of the heat exchanger 4 and each position of the baffle edge 323 is equal.

[0116] The edge 323 of the second air duct baffle 32 is aligned with the line of the first heat exchange position 421 of the heat exchanger 4, such as... Figure 12 and Figure 14 As shown, this improves the effectiveness of the corresponding arrangement of the second air duct baffle 32 and the heat exchanger 4.

[0117] Optionally, a preset distance is provided between the edge 323 of the partition and the first heat exchange position 421; or, the edge 323 of the partition and the first heat exchange position 421 abut against each other.

[0118] The distance between the edge 323 of the partition and the first heat exchange position 421 is less than or equal to 8 mm, or the distance between the edge 323 of the partition and the first heat exchange position 421 is less than or equal to 5 mm. When the air conditioner is operating in cooling or dehumidification mode, condensation easily forms on the surface of the heat exchanger 4. In this embodiment, a preset distance is provided between the edge 323 of the partition and the first heat exchange position 421 to prevent condensation from the heat exchanger 4 from flowing to the second air duct partition 32.

[0119] Optionally, the edge 323 of the baffle plate abuts against the first heat exchange position 421 of the heat exchanger 4. Optionally, a condensate outlet hole is provided on the second air duct baffle plate 32 near the edge 323 of the baffle plate.

[0120] Optionally, the first air duct baffle 31 includes a third baffle side 311 facing the heat exchanger 4, wherein the third baffle side 311 is provided with a stop protrusion 3111 that abuts against the top end of the outer heat exchange side 41 of the heat exchanger 4.

[0121] The third partition side 311 of the first air duct partition 31 is provided with a stop protrusion 3111 for fixing the top of the heat exchanger 4. This eliminates the need for an additional heat exchanger 4 mounting bracket, reducing the number of mounting and fixing components inside the casing. Optionally, the stop protrusion 3111 is groove-shaped, such as... Figure 11 As shown. Optionally, the stop groove formed by the groove-shaped stop protrusion 3111 has the same shape as the top of the heat exchanger 4, which improves the fixing effect on the top of the heat exchanger 4.

[0122] Optionally, an air distribution baffle assembly 226 is provided in the second air duct. For example... Figures 15 to 18 As shown.

[0123] The second air duct is equipped with an air distribution baffle assembly 226 for diverting the air blown out by the second fan 2. The second air duct includes a first side air duct 21 and a second side air duct 22. The air distribution baffle assembly 226 can guide the air blown out by the second fan 2 to the first side air duct 21 and the second side air duct 22 respectively, thereby improving the air volume and uniformity of the first side air outlet 201 and the second side air outlet 202.

[0124] Optionally, the air distribution baffle assembly 226 can be a fixed air guide plate structure or an air guide vane that can be driven to rotate or swing.

[0125] Optionally, the second air duct includes a main air outlet 23 disposed at the exhaust port of the second fan 2, a first side air duct 21 connecting the main air outlet 23 and the first side air outlet 201, and a second side air duct 22 connecting the main air outlet 23 and the second side air outlet 202. The air distribution baffle assembly 226 includes an air distribution front end 2264 facing the second fan 2, and at least a portion of the air distribution front end 2264 of the air distribution baffle assembly 226 is disposed in the main air outlet 23 to guide the air from the main air outlet 23 to the first side air duct 21 and the second side air duct 22, respectively.

[0126] The second air duct is divided into two sections. The air duct near the exhaust port of the second fan 2 is the main exhaust duct 23. The first side air duct 21 connects the main exhaust duct 23 and the first side exhaust port 201. The second side air duct 22 connects the main exhaust duct 23 and the second side exhaust port 202. The division between the main exhaust duct 23, the first side air duct 21, and the second side air duct 22 is shown in the diagram. Figure 17 As shown by the dashed line in the image.

[0127] Optionally, at least a portion of the air distribution front end 2264 of the air distribution baffle assembly 226 is disposed in the main air outlet duct 23. This improves the air guiding effect of the air distribution baffle assembly 226 on the air discharged from the second fan 2, directing it to the first side air duct 21 and the second side air duct 22 respectively. Along the exhaust direction of the second fan 2, the air distribution front end 2264 is located upstream of the airflow from the second fan 2, such as... Figure 18 As shown. Optionally, at least half of the air distribution front end 2264 is located in the main air outlet duct 23.

[0128] Optionally, the air distribution baffle assembly 226 includes a first guide plate 2261 and a second guide plate 2262, wherein the first guide plate 2261 extends from the main air outlet duct 23 to the first side air outlet duct 21, and the second guide plate 2262 extends from the main air outlet duct 23 to the second side air outlet duct 22.

[0129] The air distribution baffle assembly 226 includes a first guide plate 2261 extending toward a first side air duct 21 and a second guide plate 2262 extending toward a second side air duct 22. The first guide plate 2261 extends from the main air outlet duct 23 toward the first side air duct 21, which can be understood as the direction of extension of the first guide plate 2261 being from the direction of the main air outlet duct 23 toward the direction of the first side air duct 21; similarly, the second guide plate 2262 extends from the main air outlet duct 23 toward the second side air duct 22, which can be understood as the direction of extension of the second guide plate 2262 being from the direction of the main air outlet duct 23 toward the direction of the second side air duct 22.

[0130] The arrangement of the first guide plate 2261 and the second guide plate 2262 improves the air guiding effect of the air distribution baffle assembly 226 to the first side air duct 21 and the second side air duct 22 respectively.

[0131] Optionally, the second air duct is arranged vertically, the first guide plate 2261 is arranged vertically in the second air duct, and the second guide plate 2262 is arranged vertically inside the second air duct.

[0132] Optionally, the minimum angle between the first guide vane 2261 and the horizontal direction is β1, where 15° < β1 ≤ 120°; and / or, the minimum angle between the second guide vane 2262 and the horizontal direction is β2, where 15° < β2 ≤ 90°.

[0133] like Figure 19 As shown, the minimum angle β1 between the first guide plate 2261 and the horizontal direction is less than or equal to 90°. It can be understood that when the first guide plate 2261 is arc-shaped, the angle between the first guide plate 2261 and the horizontal direction can be understood as the angle between the external tangent of the end of the first guide plate 2261 closest to the main air outlet duct 23 and the horizontal direction. Optionally, 30°≤β1≤60°. This embodiment of the present disclosure improves the air distribution effect of the first guide plate 2261 towards the first side air duct 21.

[0134] Optionally, the minimum angle β2 between the second guide vane 2262 and the horizontal direction is less than or equal to 90°. It can be understood that the minimum angle between the second guide vane 2262 and the horizontal direction is also the angle between the end of the second guide vane 2262 closest to the main air outlet duct 23 and the horizontal direction. When the second guide vane 2262 is arc-shaped, a tangent is drawn at the end of the second guide vane 2262 closest to the main air outlet duct 23, such as an external tangent, to obtain the angle β2 between the second guide vane 2262 and the horizontal direction. Optionally, 30°≤β2≤60°. This embodiment of the present disclosure improves the air distribution effect of the second guide vane 2262 towards the second side air duct 22.

[0135] Optionally, the inner wall of the second air duct includes a first inner guide wall 2271 that forms an air duct with the first guide plate 2261, and a second inner guide wall 2272 that forms an air duct with the second guide plate 2262. Optionally, the first inner guide wall 2271 has the same curvature as the first guide plate 2261; or, the first inner guide wall 2271 has the same inclination angle as the first guide plate 2261; or, from the main air outlet duct 23 to the first side air duct 21, the width of the air duct formed by the first inner guide wall 2271 and the first guide plate 2261 gradually increases.

[0136] When the first guide plate 2261 is arc-shaped, the first guide inner wall 2271 of the inner wall of the second air duct is also arc-shaped. Optionally, the arc shape of the first guide inner wall 2271 is the same as that of the first guide plate 2261, or the curvature of the first guide inner wall 2271 is the same as that of the first guide plate 2261. Optionally, when the first guide plate 2261 is straight, the first guide inner wall 2271 of the inner wall of the second air duct is also straight. Optionally, the inclination angle of the first guide inner wall 2271 is the same as that of the first guide plate 2261.

[0137] Optionally, in the direction from the main air outlet duct 23 to the first side air outlet duct 21, the width of the guide channel formed by the first guide inner wall 2271 and the first guide plate 2261 gradually increases. For example... Figure 16 As shown, the width of the first guide inner wall 2271 and the first guide plate 2261 at the end near the main air outlet duct 23 is D1, and the width of the first guide inner wall 2271 and the first guide plate 2261 at the end near the first side air duct 21 is D2, wherein D1 is less than D2, and gradually increases from D1 to D2.

[0138] It is understandable that the inner wall of the first guide is 2271. Figure 16 The thickened section of the guide air duct formed by the inner wall of the second air duct and the first guide plate 2261 is shown.

[0139] Optionally, the second guide inner wall 2272 has the same curvature as the second guide plate 2262; or, the second guide inner wall 2272 has the same inclination angle as the second guide plate 2262; or, from the main air outlet duct 23 to the second side air duct 22, the width of the guide channel formed by the second guide inner wall and the second guide plate 2262 gradually increases.

[0140] When the second guide plate 2262 is arc-shaped, the second guide inner wall 2272 of the inner wall of the second air duct is also arc-shaped. Optionally, the arc shape of the second guide inner wall 2272 is the same as that of the second guide plate 2262, or the arc of the second guide inner wall 2272 is the same as that of the second guide plate 2262. Optionally, when the second guide plate 2262 is straight, the second guide inner wall 2272 of the inner wall of the second air duct is also straight. Optionally, the inclination angle of the second guide inner wall 2272 is the same as that of the second guide plate 2262.

[0141] Optionally, in the direction from the main air outlet duct 23 to the second side air outlet duct 22, the width of the guide channel formed by the second guide inner wall 2272 and the second guide plate 2262 gradually increases. For example... Figure 16As shown, the width of the second guide inner wall 2272 and the second guide plate 2262 at the end near the main air outlet duct 23 is D3, and the width of the second guide inner wall 2272 and the second guide plate 2262 at the end near the second side air duct 22 is D4, wherein D3 is less than D4, and gradually increases from D3 to D4.

[0142] It is understandable that the second guide inner wall 2272 is... Figure 16 The thickened section of the guide air duct formed by the inner wall of the second air duct and the second guide plate 2262 is shown.

[0143] Optionally, a side air duct connection position 229 is provided between the first side air duct 21 and the second side air duct 22; the air distribution baffle assembly 226 also includes a third guide plate 2263, and the third guide plate 2263 is disposed between the first guide plate 2261 and the second guide plate 2262, wherein the third guide plate 2263 extends from the main air outlet duct 23 to the side air duct connection position 229.

[0144] The air distribution baffle assembly 226 further includes a third guide plate 2263 disposed between the first guide plate 2261 and the second guide plate 2262, and the third guide plate 2263 extends from the main air outlet duct 23 to the side air duct connection position 229. Thus, the third guide plate 2263 and the first guide plate 2261 form two air ducts that distribute air to the first side air duct 21, and similarly, the third guide plate 2263 and the second guide plate 2262 form two air ducts that distribute air to the second side air duct 22. It is evident that the arrangement of the third guide plate 2263 improves the air distribution effect of the air blown by the second fan 2 to the first side air duct 21 and the second side air duct 22 respectively.

[0145] Optionally, the third deflector 2263 is also vertically arranged; alternatively, the third deflector 2263 is arc-shaped.

[0146] Optionally, the air distribution baffle assembly 226 may also include a guide plate connecting plate 228 that is intersected with the first guide plate 2261 and the second guide plate 2262.

[0147] The second air duct has a certain height in the vertical direction. Similarly, the heights of the first guide plate 2261, the second guide plate 2262, and the third guide plate 2263 are approximately the same as the height of the second air duct. It can be seen that the first guide plate 2261, the second guide plate 2262, and the third guide plate 2263 also have a certain height. The arrangement of the guide plate connecting plate 228 improves the airflow distribution and guiding stability of the vertically arranged first guide plate 2261, second guide plate 2262, and third guide plate 2263.

[0148] Optionally, the guide plate connecting plate 228 is arranged horizontally. Optionally, the guide plate connecting plate 228 is integrally formed with the first guide plate 2261, the second guide plate 2262 and the third guide plate 2263; Optionally, the guide plate connecting plate 228 is inserted into the first guide plate 2261, the second guide plate 2262 and the third guide plate 2263.

[0149] Optionally, there may be multiple guide plate connecting plates 228, and the multiple guide plate connecting plates 228 are spaced apart along the length direction of the first guide plate 2261 and the second guide plate 2262.

[0150] The air distribution baffle assembly 226 includes a plurality of spaced-apart guide plate connecting plates 228, which are spaced apart along the length or height direction of the first guide plate 2261 and the second guide plate 2262. It is understood that the length or height direction of the first guide plate 2261, the second guide plate 2262, and the third guide plate 2263 is vertical. Optionally, the spacing between any two adjacent guide plate connecting plates 228 is equal. Figure 13 As shown.

[0151] Optionally, the guide plate connecting plate 228 includes a first guide plate end 2281 and a second guide plate end 2282 opposite to each other, wherein the first guide plate end 2281 is connected to the inner wall of the second air duct; and / or, the second guide plate end 2282 is connected to the inner wall of the second air duct.

[0152] The first guide plate end 2281 of the guide plate connecting plate 228 is connected to the inner wall of the second air duct, and similarly, the second guide plate end 2282 is also connected to the inner wall of the second air duct. This improves the stability of the guide plate connecting plate 228 in the second air duct.

[0153] Optionally, the indoor unit of the dual-duct air conditioner further includes a heat exchanger 4, disposed within the casing. The heat exchanger 4 includes a first heat exchange portion 431 disposed on the air inlet side of the first fan 1, and a second heat exchange portion 432 disposed on the air inlet side of the second fan 2. The heat exchange area of ​​the first heat exchange portion 431 is smaller than the heat exchange area of ​​the second heat exchange portion 432. Figures 20 to 24 As shown.

[0154] The heat exchanger 4 includes a first heat exchange section 431 disposed on the air inlet side of the first fan 1 and a second heat exchange section 432 disposed on the air inlet side of the second fan 2. The heat exchanger 4 can be divided vertically to obtain the second heat exchange section 432 and the first heat exchange section 431 distributed vertically. When the first fan 1 is disposed below the second fan 2, the first heat exchange section 431 is disposed below the second heat exchange section 432. The dividing line between the first heat exchange section 431 and the second heat exchange section 432 is as follows: Figure 21 As shown by the dashed line in the image.

[0155] Optionally, the refrigerant pipelines of the first heat exchange section 431 and the second heat exchange section 432 are connected in series or in parallel. When the refrigerant pipelines of the first heat exchange section 431 and the second heat exchange section 432 are connected in parallel, the refrigerant distribution ratio between the first heat exchange section 431 and the second heat exchange section 432 can be adjusted according to the user's requirements for the outlet air temperature between the upper air outlet 101 and the side air outlet; or, when only the upper air outlet 101 is needed for air supply, the refrigerant can flow only through the first heat exchange section 431, and when only the side air outlet is needed for air supply, the refrigerant can flow only through the second heat exchange section 432.

[0156] Optionally, the fins of the heat exchanger in the first heat exchange section 431 are integrally formed with the fins of the heat exchanger in the second heat exchange section 432.

[0157] In this embodiment, the heat exchange area of ​​the first heat exchange section 431 is smaller than the heat exchange area of ​​the second heat exchange section 432. When the first fan 1 is a centrifugal fan and the second fan 2 is a cross-flow fan, the heat exchange area of ​​the first heat exchange section 431 corresponding to the centrifugal fan is smaller, and the heat exchange area of ​​the second heat exchange section 432 corresponding to the cross-flow fan is larger, thereby increasing the overall air volume of the dual-duct air conditioning indoor unit.

[0158] Optionally, the ratio of the heat exchange area of ​​the first heat exchange section 431 to the heat exchange area of ​​the second heat exchange section 432 is greater than or equal to 1 / 2.

[0159] In this way, the air delivery effect of the first fan 1 is improved without reducing the overall air volume of the indoor unit of the dual-duct air conditioner. Optionally, the ratio of the heat exchange area of ​​the first heat exchange section 431 to the heat exchange area of ​​the second heat exchange section 432 is less than or equal to 2 / 3.

[0160] Optionally, the heat exchanger 4 includes a first heat exchange section 433 and a second heat exchange section 434. The first heat exchange section 433 includes heat exchange portions disposed on the air inlet side of the first fan 1 and the air inlet side of the second fan 2, and the second heat exchange section 434 includes heat exchange portions disposed on the air inlet side of the first fan 1 and the air inlet side of the second fan 2. A first heat exchange connection position 435, which is arc-shaped or bent, is provided between the first heat exchange section 433 and the second heat exchange section 434.

[0161] The heat exchanger 4 is divided in the horizontal direction to obtain a first heat exchange section 433 and a second heat exchange section 434 arranged in the horizontal direction. The first heat exchange section 431 corresponding to the air inlet side of the first fan 1 includes the first heat exchange section 433 and the second heat exchange section 434. The second heat exchange section 432 corresponding to the air inlet side of the second fan 2 also includes the first heat exchange section 433 and the second heat exchange section 434.

[0162] Optionally, the first heat exchange section 433 is a straight section, the second heat exchange section 434 is a straight section, and an arc-shaped or bent first heat exchange connection position 435 is provided between the first heat exchange section 433 and the second heat exchange section 434, such as... Figure 22 and Figure 23 As shown.

[0163] Optionally, the second fan 2 is provided with a first air duct 11 partition and a second air duct partition 32 at both ends, with the first air duct 11 partition located on the upper part of the second air duct partition 32. The first air duct 11 partition has a first air duct opening 301 communicating with the first air duct 11, and the second air duct partition 32 has a second air duct opening 302 communicating with the first air duct 11.

[0164] Optionally, the housing includes a first side shell portion 51 near the first air duct 11, and a second air duct opening 302 is opened from the first starting position 3023 of the second air duct partition 32 toward the first side shell portion 51. The vertical extension line where the first starting position 3023 is located is set as the first extension line, wherein the first extension line passes through the first heat exchange connection position 435; or, the first heat exchange connection position 435 and the second air duct opening 302 are located on the same side of the first extension line.

[0165] The first extension line is as follows Figure 22 As shown by the vertical dashed line in the image, Figure 22 In this embodiment, the first extension line passes through the first heat exchange connection position 435. Alternatively, the first heat exchange connection position 435 and the second air duct opening 302 are located on the same side of the first extension line, for example, with... Figure 22 Taking the orientation shown as an example, the first heat exchange connection position 435 and the second air duct opening 302 can both be located on the left side of the first extension line. This increases the air volume delivered by the first fan 1.

[0166] Optionally, a side air duct connection position 229 is provided between the first side air duct 21 and the second side air duct 22. The line connecting the center of the second fan 2 and the first heat exchange connection position 435 forms a first straight line, and the line connecting the center of the second fan 2 and the side air duct connection position 229 forms a second straight line. The angle r between the first straight line and the second straight line is greater than or equal to a second preset angle. Figure 22 As shown.

[0167] Optionally, a first straight line can be obtained by connecting the center of the first heat exchange connection position 435 with the center of the second fan 2; or, a first straight line can be obtained by connecting the position closest to the shell in the first heat exchange connection position 435 with the center of the second fan 2.

[0168] In this embodiment, the angle between the first straight line and the second straight line is r, and 90°≤r≤270°, thus improving the heat exchange effect between the second fan 2 and the heat exchanger 4. Optionally, 130°≤r≤140°.

[0169] Optionally, the heat exchanger 4 includes a first heat exchange section 433, a second heat exchange section 434 and a first heat exchange connection position 435 disposed between the first heat exchange section 433 and the second heat exchange section 434 along the width direction, and the sum of the widths of the first heat exchange section 433, the second heat exchange section 434 and the first heat exchange connection position 435 is less than or equal to a first preset width.

[0170] The widths of the first heat exchange section 433, the second heat exchange section 434, and the first heat exchange connection position 435 can be selected from the middle portions of these three sections, respectively. The total width of the first heat exchange section 433, the second heat exchange section 434, and the first heat exchange connection position 435 can be... Figure 23 The heat exchange section 436 in the thickened part is shown. In this embodiment, the sum of the widths of all parts of the heat exchanger 4 is less than or equal to a first preset width, which is beneficial for the miniaturization of the dual-duct air conditioning indoor unit. The first preset width is less than or equal to 500 mm.

[0171] Optionally, the width of the first heat exchange section 433 is less than or equal to half the total width of the heat exchanger 4, and the width of the first heat exchange connection position 435 is less than or equal to half the total width of the heat exchanger 4.

[0172] Optionally, the second heat exchange section 434 of the heat exchanger 4 is a heat exchange section close to the second fan 2, wherein the width of the first heat exchange section 433 is smaller than the width of the second heat exchange section 434, or the width of the first heat exchange connection position 435 is smaller than the width of the second heat exchange section 434, thereby improving the heat exchange effect between the second fan 2 and the heat exchanger 4.

[0173] Optionally, the first heat exchange connection position 435 is an arc-shaped heat exchange section, and the bending radius of the arc-shaped heat exchange section is R, wherein 50mm≤R≤180mm.

[0174] Take the innermost innermost arc-shaped segment of the arc-shaped heat exchange section as the bending radius R, such as... Figure 24 As shown in bold in this embodiment, 50mm ≤ R ≤ 180mm, and optionally, 60mm ≤ R ≤ 75mm. This improves the heat exchange effect between the first heat exchange connection position 435 of the heat exchanger 4 and the first fan 1 and the second fan 2.

[0175] Optionally, the first heat exchange connection position 435 includes an inner arc-shaped segment and an outer arc-shaped segment, wherein the arc length of the inner arc-shaped segment is greater than or equal to 5 mm.

[0176] Optionally, the inner arc-shaped section of the first heat exchange connection position 435 is... Figure 24 As shown in bold in the middle. The arc length of the inner arc segment is greater than or equal to 5mm. Optionally, the arc length of the inner arc segment can be 5mm, 8mm, 15mm, 20mm, 30mm, etc.

[0177] Optionally, such as Figure 25 As shown, a side air duct connection position 229 is provided between the first side air duct 21 and the second side air duct 22. The first side air duct 21 includes a first air duct starting position 2101. The line connecting the center of the second fan 2 and the side air duct connection position 229 is a preset line. The line connecting the center of the second fan 2 and the first air duct starting position 2101 is a first air duct connection line. The included angle between the preset line and the first air duct connection line is q1, and q1≤80°.

[0178] As mentioned above, the second air duct includes a main air outlet duct 23, a first side air duct 21, and a second side air duct 22. The first air duct starting position 2101 of the first side air duct 21 is the starting position where the first side air duct 21 connects to the main air outlet duct 23, such as... Figure 25 As shown.

[0179] In this embodiment, the angle q1 between the preset line and the line connecting the first air duct is ≤80°, which improves the air distribution effect of the second fan 2 to the first side air duct 21. Optionally, 0°<q1≤45°.

[0180] Optionally, the second side air duct 22 includes a second air duct starting position 2201, and the line connecting the center of the second fan and the second air duct starting position 2201 is the second air duct line, wherein the angle between the preset line and the second air duct line is q2, and q2≤q1.

[0181] As mentioned above, the second air duct includes a main air outlet duct 23, a first side air duct 21, and a second side air duct 22. The second air duct 22's starting position 2201 is the starting position where the second side air duct 22 connects to the main air outlet duct 23, as shown below. Figure 25 As shown.

[0182] In this embodiment, the angle between the preset line and the line connecting the second air duct is q2, and q2 ≤ q1. This improves the uniformity of airflow distribution between the first side air duct 21 and the second side air duct 22 in the dual-duct air conditioner indoor unit, achieving a uniform airflow effect, reducing the temperature difference between different locations in the user's room, and improving comfort. Optionally, 0° < q2 ≤ 70°; alternatively, 0° < q2 ≤ 30°.

[0183] Optionally, 20° < q1 ≤ 30°, and 3° < q2 ≤ 10°. This improves the uniformity of airflow distribution in the first side duct 21 and the second side duct 22 of the dual-duct air conditioner indoor unit.

[0184] This disclosure also provides an air conditioner that includes the aforementioned dual-duct indoor air conditioning unit.

[0185] The foregoing description and accompanying drawings fully illustrate embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A dual-duct air conditioning indoor unit, characterized in that, include: The shell has a first air duct and a second air duct inside. The second air duct includes a first side air duct and a second side air duct. The upper part of the shell is provided with an upper air outlet that is connected to the first air duct. The side of the shell is provided with a first side air outlet and a second side air outlet that are respectively connected to the first side air duct and the second side air duct. The fan assembly includes a first fan and a second fan. The first fan is connected to an upper air outlet via a first air duct for upper air outlet. The second fan is connected to a first side air outlet and a second side air outlet via first and second side air ducts respectively for side air supply. A side air duct connection position is provided between the first and second side air ducts. The first side air duct includes a starting position. The line connecting the center of the second fan to the side duct connection position is a preset line, and the line connecting the center of the second fan to the starting position of the first duct is the first duct connection line. The included angle between the preset line and the first duct connection line is q1, and q1≤80°.

2. The dual-duct air conditioning indoor unit according to claim 1, characterized in that, 0°＜q1≤45°。 3. The dual-duct air conditioning indoor unit according to claim 1, characterized in that, The second side air duct includes the starting position of the second air duct, and the line connecting the center of the second fan and the starting position of the second air duct forms the second air duct line. The angle between the preset line and the line connecting the second air duct is q2, and q2≤q1.

4. The dual-duct air conditioning indoor unit according to claim 3, characterized in that, 0°＜q2≤70°。 5. The dual-duct air conditioning indoor unit according to claim 4, characterized in that, 0°＜q2≤30°。 6. The dual-duct air conditioning indoor unit according to any one of claims 1 to 5, characterized in that, The first fan is located below the second fan.

7. The dual-duct air conditioning indoor unit according to claim 6, characterized in that, The first air duct is located on one side of the second side air duct.

8. The dual-duct air conditioning indoor unit according to claim 7, characterized in that, The second fan is equipped with a first air duct baffle and a second air duct baffle at both ends, with the first air duct baffle located on top of the second air duct baffle. The first air duct partition has a first air duct opening that connects to the first air duct, and the second air duct partition has a second air duct opening that connects to the first air duct.

9. The dual-duct air conditioning indoor unit according to claim 8, characterized in that, The first fan includes a centrifugal fan; and / or, The second type of fan includes a cross-flow fan.

10. An air conditioner, characterized in that, Including the dual-duct air conditioning indoor unit as described in any one of claims 1 to 9.

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