Air duct assembly and air conditioner

Abstract

The utility model provides an air duct assembly and an air conditioner, the air duct assembly comprises a volute and a volute tongue, a channel is formed between the volute tongue and the volute, and a cross-flow fan is arranged in the channel. The air duct assembly further comprises a flow dividing block arranged at the outlet end of the channel, the flow dividing block is provided with a first flow dividing face and a second flow dividing face, the first flow dividing face and the volute tongue form a first air supply duct, and the second flow dividing face and the volute form a second air supply duct. The first air supply duct comprises a first air outlet section, and the first air outlet section is a gradually-shrinking section. According to the air duct assembly and the air conditioner, the problem that air flow loss of outlet air of an air conditioner with a single cross-flow fan and double air outlets is large can be solved, and the effects that the air supply volume of the two air outlets is evenly distributed and the air volume loss is minimum are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to air conditioner technical field especially is related to a wind channel subassembly and air conditioner. BACKGROUND

[0002] The air conditioner includes single cross-flow air conditioner, in order to promote the comfort of air conditioner air outlet, usually adopt partition piece to divide wind, and the partition piece divides the air duct into two, so that two air ducts send air to different directions. Further, in order to promote the uniformity of air conditioner air outlet, the width at the air inlet of two air ducts is adjusted, so that the air supply of two air ducts is adjusted.

[0003] The air supply characteristics of cross-flow fan determine that the airflow is deviated to the volute tongue and is sent out, that is, the airflow is not blown out vertically to the air outlet. Although the air supply of the air duct can be adjusted by adjusting the width at the air inlet of two air ducts, the problem of air volume distribution can be solved, but part of the airflow is blown to the air duct wall after being shunted, causing energy loss and reducing the air volume of the air conditioner. SUMMARY

[0004] In view of the above problems, the utility model is provided to overcome the above problems or at least partially solve the above problems, a wind channel subassembly and air conditioner, which can solve the problem of large air loss of single cross-flow fan double air outlet air conditioner, and achieve the effect of ensuring the average distribution of air supply of two air outlets and minimizing the air volume loss.

[0005] Specifically, the utility model provides a kind of wind channel subassembly, including volute and volute tongue, the volute tongue and the volute between form passageway, and cross-flow fan is arranged in the passageway;The wind channel subassembly further includes:

[0006] Shunt block, the shunt block is arranged at the outlet end of the passageway, the shunt block has first shunt surface and second shunt surface, the first shunt surface and the volute tongue form first air supply air duct, and the second shunt surface and the volute form second air supply air duct;

[0007] The first air supply air duct includes first air outlet section, and the first air outlet section is tapered section.

[0008] Optionally, the second air supply air duct includes second air outlet section, and the second air outlet section is gradually expanded section. Optionally, the first air supply air duct further includes first air inlet section, and the first air inlet section is at the air inlet side of the first air outlet section, and the first air inlet section is gradually expanded section.

[0009] Optionally, the second air supply air duct includes second air inlet section, and the second air inlet section is at the air inlet side of the second air outlet section, and the second air inlet section is tapered section.

[0010] Optionally, the width at the inlet of the first air inlet section is greater than the width at the inlet of the second air inlet section.

[0011] Optionally, the width at the inlet of the first air inlet section is greater than the width at the outlet of the first air outlet section.

[0012] The width at the inlet of the second air inlet section is less than the width at the outlet of the second air outlet section.

[0013] Optionally, the channel is flared in the flow direction of the airflow, and the volute and the volute tongue are curved toward the side close to the volute.

[0014] Optionally, the air duct assembly further comprises a flow guide plate, and the flow guide plate is arranged on the air inlet side of the first air supply duct and the second air supply duct.

[0015] Optionally, a plurality of flow guide plates are arranged, and the plurality of flow guide plates are divided into first flow guide plates and second flow guide plates, the first flow guide plates guide the airflow to the first air supply duct, and the second flow guide plates guide the airflow to the second air supply duct.

[0016] In the flow direction of the airflow, the second flow guide plate is curved toward the side close to the volute.

[0017] The flow distribution block is wedge-shaped, and one of the second flow guide plates close to the volute tongue is arranged opposite the flow distribution block.

[0018] The utility model also provides a kind of air conditioner, including shell and as any one of above described air duct assembly, the air duct assembly is arranged in the shell.

[0019] In the air duct assembly and air conditioner of the utility model, flow distribution block is arranged between volute and volute tongue, first air supply duct is formed between flow distribution block and volute tongue, and second air supply duct is formed between flow distribution block and volute.The first air outlet section is the outlet of the first air supply duct, and the first air outlet section is a tapered section.Under the action of tubular flow fan, airflow enters the first air supply duct and the second air supply duct, and tubular flow fan generates power to drive airflow to flow by rotating, therefore, the air volume of the side close to volute tongue is more, i.e.

[0020] The above and other objects, advantages and features of this utility model will become more apparent to those skilled in the art from the following detailed description of specific embodiments of this utility model in conjunction with the accompanying drawings. Attached Figure Description

[0021] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0022] Figure 1 This is a schematic structural diagram of an air conditioner according to an embodiment of the present invention;

[0023] Figure 2 This is a schematic structural diagram of a duct assembly according to an embodiment of the present invention. Detailed Implementation

[0024] The following reference Figure 1 and Figure 2 This invention describes a duct assembly and an air conditioner according to embodiments of the present invention. In this description, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature, that is, include one or more of that feature. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it encompasses, unless otherwise specifically described, this indicates that other features are not excluded and may be further included.

[0025] Unless otherwise expressly specified and limited, the terms "set," "install," "connect," "link," "fix," and "couple" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art should be able to understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] In addition, in the description of the embodiments, the first feature being "on" or "under" the second feature can include the first and second features being in direct contact, or can include the first and second features not being in direct contact but being in contact through another feature between them. That is, in the description of the embodiments, the first feature being "on", "above", and "over" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicates that the first feature is higher in horizontal height than the second feature. The first feature being "under", "below", or "underneath" the second feature can be the first feature being directly below or obliquely below the second feature, or merely indicates that the first feature is lower in horizontal height than the second feature.

[0027] In the description of the embodiments, the description of the terms "one embodiment", "some embodiments", "illustrative embodiments", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the utility model. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0028] Figure 1 is a schematic structural diagram of an air conditioner according to an embodiment of the utility model, as Figure 1 indicated, and with reference to Figure 2 , the embodiment of the utility model provides a wind channel assembly 100, comprising a volute 10 and a volute tongue 20, a channel 30 is formed between the volute tongue 20 and the volute 10, and a cross-flow fan 40 is arranged in the channel 30. The wind channel assembly 100 further comprises a shunt block 50, the shunt block 50 is arranged at the outlet end of the channel 30, the shunt block 50 has a first shunt surface 510 and a second shunt surface 520, the first shunt surface 510 forms a first air supply wind channel 310 with the volute tongue 20, and the second shunt surface 520 forms a second air supply wind channel 320 with the volute 10. The first air supply wind channel 310 comprises a first air outlet section 311, and the first air outlet section 311 is a tapered section, that is, the width L3 of the outlet of the first air outlet section 311 is less than the width L2 of the connection position of the first air outlet section 311 and a first air inlet section 312.

[0029] In the embodiment, the shunt block 50 is arranged between the volute 10 and the volute tongue 20, the first air supply air duct 310 is formed between the shunt block 50 and the volute tongue 20, and the second air supply air duct 320 is formed between the shunt block 50 and the volute 10. The first air outlet section 311 is an outlet of the first air supply air duct 310, and the first air outlet section 311 is a tapered section. The airflow enters the first air supply air duct 310 and the second air supply air duct 320 under the action of the cross-flow fan 40, the cross-flow fan 40 drives the airflow to flow by rotation, and therefore, the air volume on the side close to the volute tongue 20 is relatively large, that is, the airflow entering the first air supply air duct 310 is relatively large. Since the first air outlet section 311 is a tapered section, the airflow forms a fluid accumulation at the first air outlet section 311, the static pressure at the outlet of the first air supply air duct 310 increases, the airflow entering the first air supply air duct 310 decreases, and more airflow flows to the second air supply air duct 320, thereby increasing the air volume of the second air supply air duct 320. By means of the closing of the first air outlet section 311, the air volume in the first air supply air duct 310 and the second air supply air duct 320 is automatically adjusted, so that the air volume of the first air supply air duct 310 and the second air supply air duct 320 is relatively uniform. Moreover, the air volume is adjusted by means of the wind pressure principle, without participation of other energy, and the loss of the air volume is small.

[0030] In some embodiments of the utility model, as shown in Figure 1 The second air supply air duct 320 includes a second air outlet section 321, and the second air outlet section 321 is a gradually expanded section, that is, the width L6 of the outlet of the second air outlet section 321 is larger than the width L5 of the connection between the second air outlet section 321 and the second air inlet section 322.

[0031] In the embodiment, the second air outlet section 321 is an outlet of the second air supply air duct 320, and the second air outlet section 321 is a gradually expanded section. Due to the expansion of the second air outlet section 321, after the airflow enters the second air supply air duct 320, the airflow flows to the second air outlet section 321, the wall surface of the second air outlet section 321 has small resistance to the airflow, and the airflow flows more smoothly, so that more airflow flows to the second air supply air duct 320, thereby increasing the air volume of the second air supply air duct 320. By means of the expansion of the second air outlet section 321, the air volume in the first air supply air duct 310 and the second air supply air duct 320 is automatically adjusted, so that the air volume of the first air supply air duct 310 and the second air supply air duct 320 is relatively uniform. Moreover, the air volume is adjusted by means of the wind pressure principle, without participation of other energy, and the loss of the air volume is small.

[0032] In some embodiments of the utility model, as shown in Figure 1As shown, the first air supply air duct 310 further comprises a first air inlet section 312, which is located at the air inlet side of the first air outlet section 311, and the first air inlet section 312 is a gradually expanding section, i.e., the width L1 of the inlet of the first air inlet section 312 is smaller than the width L2 of the connection between the first air inlet section 312 and the first air outlet section 311.

[0033] In the embodiment, the first air supply air duct 310 comprises the first air inlet section 312 and the first air outlet section 311, the first air inlet section 312 is located at the inlet of the first air supply air duct 310, and the first air inlet section 312 is a gradually expanding section, i.e., the width of the first air supply air duct 310 first increases and then decreases. The wall of the first air inlet section 312 has a smaller resistance to the airflow, and the airflow flows more smoothly, so that more airflow flows into the first air supply air duct 310. The gradually increasing air volume in the first air supply air duct 310, when the air volume in the first air supply air duct 310 is greater than that in the second air supply air duct 320, the first air outlet section 311 in the form of a gradually narrowing section limits the air volume entering the first air supply air duct 310. After the airflow enters the first air outlet section 311, a fluid accumulation is formed at the first air outlet section 311, the static pressure at the outlet of the first air supply air duct 310 increases, so that more airflow flows into the second air supply air duct 320, thereby reducing the air volume entering the first air supply air duct 310, and achieving automatic adjustment of the air volume in the first air supply air duct 310 and the second air supply air duct 320. The air volume in the first air supply air duct 310 and the second air supply air duct 320 is adjusted by using the principle of air pressure, without other energy participating, and the loss of air volume is small.

[0034] Moreover, in the case that the airflow entering the second air supply air duct 320 is relatively large, the flared structure of the first air inlet section 312 makes the wall of the first air inlet section 312 have a smaller resistance to the airflow, and the airflow flows more smoothly, so that more airflow flows into the first air supply air duct 310, thereby increasing the air volume of the first air supply air duct 310.

[0035] In some embodiments of the utility model, as shown in Figure 1 and Figure 2 As shown, the second air supply air duct 320 comprises a second air inlet section 322, which is located at the air inlet side of the second air outlet section 321, and the second air inlet section 322 is a gradually narrowing section, i.e., the width L4 of the inlet of the second air inlet section 322 is greater than the width L5 of the connection between the second air inlet section 322 and the second air outlet section 321.

[0036] In the embodiment, the second air supply air duct 320 comprises a second air inlet section 322 and a second air outlet section 321, the second air inlet section 322 is located at the inlet of the second air supply air duct 320, and the second air inlet section 322 is in the shape of a converging section, that is, the width of the second air supply air duct 320 first decreases and then increases. When the air flow entering the second air supply air duct 320 is relatively large, the converging section of the second air inlet section 322 is arranged to make the wall surface of the second air inlet section 322 have relatively large resistance to the air flow, and the position is in a high static pressure area, so that the air flow is reduced to enter, more air flow enters the first air supply air duct 310, and thus the air volume in the first air supply air duct 310 and the second air supply air duct 320 is automatically adjusted. The air volume in the first air supply air duct 310 and the second air supply air duct 320 is adjusted by using the wind pressure principle, no other energy is involved, and the loss of air volume is small.

[0037] In some embodiments of the utility model, as shown in Figure 2 The width L1 of the inlet of the first air inlet section 312 is greater than the width L4 of the inlet of the second air inlet section 322.

[0038] In the embodiment, the width L1 of the inlet of the first air inlet section 312 is greater than the width L4 of the inlet of the second air inlet section 322, so that more air flow enters the first air supply air duct 310 when flowing. The air volume is adjusted when the air flow in the second air supply air duct 320 is relatively large, the air volume in the first air supply air duct 310 and the second air supply air duct 320 is adjusted by using the wind pressure principle, no other energy is involved, and the loss of air volume is small.

[0039] In some preferred embodiments of the utility model, as shown in Figure 1 And Figure 2 The first air supply air duct 310 comprises a first air inlet section 312 and a first air outlet section 311, the first air inlet section 312 is a gradually expanding section, and the first air outlet section is a gradually converging section. The second air supply air duct 320 comprises a second air inlet section 322 and a second air outlet section 321, the second air inlet section 322 is a gradually converging section, and the second air outlet section 321 is a gradually expanding section. And the width L1 of the inlet of the first air inlet section 312 is greater than the width L4 of the inlet of the second air inlet section 322.

[0040] In the embodiment, the first air supply air duct 310 is first expanded and then contracted, and the second air supply air duct 320 is first contracted and then expanded. When the air flow entering the first air supply air duct 310 is excessive, due to the contraction of the first air outlet section 311, the resistance of the first air outlet section 311 to the air flow increases, the air flow forms a fluid accumulation at the first air outlet section 311, the static pressure at the first air outlet section 311 increases, thereby reducing the air volume entering the first air supply air duct 310, so that more air flow enters the second air supply air duct 320. And, due to the expansion of the second air outlet section 321, the resistance of the second air outlet section 321 to the air flow is small, so that the air flow flows more smoothly after entering the second air supply air duct 320, the static pressure at the second air outlet section 321 is small, further making more air flow enter the second air supply air duct 320.

[0041] When the air flow entering the second air supply air duct 320 is excessive, due to the contraction of the second air inlet section 322, the resistance of the second air inlet section 322 to the air flow increases, the air flow forms a fluid accumulation at the second air inlet section 322, the static pressure at the second air inlet section 322 increases, thereby reducing the air volume entering the second air supply air duct 320, so that more air flow enters the first air supply air duct 310. And, due to the expansion of the first air inlet section 312, the resistance of the first air inlet section 312 to the air flow is small, so that the air flow flows more smoothly after entering the first air supply air duct 310, the static pressure at the first air inlet section 312 is small, further making more air flow enter the first air supply air duct 310. At the same time, since the width of the inlet of the first air inlet section 312 is greater than the width of the inlet of the second air inlet section 322, the air flow entering the first air supply air duct 310 is also increased.

[0042] Further, since the outlet is a pressure release area, the pressure drop is large, therefore, the influence of the contraction of the first air outlet section 311 on the air volume of the first air supply air duct 310 is greater than the influence of the expansion of the first air inlet section 312 on the air volume of the first air supply air duct 310. Similarly, the influence of the expansion of the second air outlet section 321 on the air volume of the second air supply air duct 320 is greater than the influence of the contraction of the second air inlet section 322 on the air volume of the second air supply air duct 320. Therefore, the overall air volume distribution is still in favor of the second air supply air duct 320.

[0043] By setting the profiles of the first air supply air duct 310 and the second air supply air duct 320, the air volume of the first air supply air duct 310 and the second air supply air duct 320 is automatically adjusted, so that the air volume in the first air supply air duct 310 and the second air supply air duct 320 is in a dynamic balance state, thereby solving the air supply uneven problem caused by the through-flow fan air supply characteristics. Moreover, the air volume of the first air supply air duct 310 and the second air supply air duct 320 is adjusted by using the wind pressure principle, without the participation of other energy, and the air volume loss is small.

[0044] In some embodiments of the utility model,Figure 2 As shown, the width L1 at the inlet of the first air inlet section 312 is greater than the width L3 at the outlet of the first air outlet section 311. The width L4 at the inlet of the second air inlet section 322 is less than the width L6 at the outlet of the second air outlet section 321.

[0045] In the embodiment, the width of the first air supply duct 310 first increases and then decreases, the width at the inlet of the first air inlet section 312 is greater than the width at the outlet of the first air outlet section 311, and the first air inlet section 312 has less influence on the air volume than the first air outlet section. The width of the second air supply duct 320 first decreases and then increases, the width at the inlet of the second air inlet section 322 is less than the width at the outlet of the second air outlet section 321, and the second air inlet section 322 has less influence on the air volume than the second air outlet section. Therefore, the overall distribution of the air volume is still in favor of the second air supply duct 320. Through the width of the inlet and outlet of the first air supply duct 310 and the second air supply duct 320, the problem of air supply caused by the air supply characteristics of the cross-flow fan is solved, and the air loss is reduced.

[0046] In some embodiments of the present application, as shown in Figure 1 As shown, the channel 30 is flared along the flow direction of the airflow. Moreover, the volute 10 and the volute tongue 20 are curved toward the side close to the volute 10.

[0047] In the embodiment, the channel 30 is flared, and the airflow flows along the walls of the volute 10 and the volute tongue 20, so that the airflow spreads to both sides, increases the air volume and the air angle, and improves the air outlet effect.

[0048] Further, the volute 10 and the volute tongue 20 are curved toward the side close to the volute 10. Since the cross-flow fan 40 generates power by rotating to drive the airflow to flow, the airflow deviates to the side of the volute tongue 20 when entering the channel 30. Through the curved arrangement of the volute 10 and the volute tongue 20, the airflow flows along the walls of the volute 10 and the volute tongue 20 after entering the channel 30, changes the direction of the airflow, so that the airflow can not only blow to the side of the volute tongue 20, but also blow to the front side and the side close to the volute 10, improving the air outlet effect.

[0049] In some embodiments of the present application, as shown in Figure 1 As shown, the air duct assembly 100 further comprises a flow guide plate 60, which is arranged on the air inlet side of the first air supply duct 310 and the second air supply duct 320.

[0050] In the embodiment, the air duct assembly 100 is further provided with a flow guide plate 60, which is located at the air outlet side of the cross-flow fan 40. The air flow is blown out from the cross-flow fan 40, enters the first air supply air duct 310 and the second air supply air duct 320 after being guided by the flow guide plate 60. The flow guide plate 60 rectifies the air flow blown out by the cross-flow fan 40, guides the flow of the air flow, changes the flow direction of the air flow, reduces the turbulence of the air flow, reduces the resistance in the flow process of the air flow, and improves the air outlet effect. Moreover, the flow guide plate 60 guides the air flow to avoid the air flow colliding on the first air supply air duct 310 and the second air supply air duct 320, and reduces the noise generated by the air flow.

[0051] In some embodiments of the utility model, as shown in Figure 1 The flow guide plate 60 is provided with a plurality of flow guide plates 60, and the plurality of flow guide plates 60 are divided into first flow guide plates 610 and second flow guide plates 620, the first flow guide plates 610 guide air to the first air supply air duct 310, and the second flow guide plates 620 guide air to the second air supply air duct 320.

[0052] In the embodiment, the plurality of flow guide plates 60 are divided into first flow guide plates 610 and second flow guide plates 620, the first flow guide plates 610 guide air to flow to the first air supply air duct 310, and the first flow guide plates 610 extend along the flow direction of the air flow, thereby reducing the resistance in the flow process of the air flow. The second flow guide plates 620 are bent to one side of the volute 10, thereby changing the direction of the air flow blown out by the cross-flow fan 40, guiding the air flow to flow to the second air supply air duct 320, preventing the wind blown out by the cross-flow fan 40 from directly blowing to the second flow distribution surface 520, and achieving the effects of reducing wind loss and improving air supply volume.

[0053] In some embodiments of the utility model, as shown in Figure 1 The flow distribution block 50 is wedge-shaped, and one second flow guide plate 620 close to the volute tongue 20 is arranged opposite to the flow distribution block 50.

[0054] In the embodiment, one second flow guide plate 620 is arranged opposite to the flow distribution block 50, the air flow on both sides of the second flow guide plate 620 flows to the first air supply air duct 310 and the second air supply air duct 320 respectively, thereby avoiding or reducing the air flow directly blowing to the flow distribution block 50, reducing wind loss and energy loss, achieving the effects of improving air supply volume and reducing energy consumption. Moreover, the air flow does not blow to the flow distribution block 50, thereby avoiding the noise generated by the air flow colliding with the flow distribution block 50.

[0055] The utility model embodiment further provides an air conditioner 200, including shell 70 and air duct assembly 100 like any preceding embodiment, air duct assembly 100 is arranged in shell 70.

[0056] In the embodiment, the air conditioner 200 comprises the air duct assembly 100, the air volume of the first air supply air duct 310 and the second air supply air duct 320 is automatically adjusted by setting the profile of the first air supply air duct 310 and the second air supply air duct 320, so that the air volume in the first air supply air duct 310 and the second air supply air duct 320 is in a dynamic balance state, thereby solving the problem of uneven air supply caused by the air supply characteristics of the cross-flow fan, and further improving the air outlet uniformity of the air conditioner 200. Moreover, the air volume of the first air supply air duct 310 and the second air supply air duct 320 is adjusted by using the wind pressure principle, without the participation of other energy, the air volume loss is small, thereby improving the air supply volume of the air conditioner 200 and improving the air supply effect of the air conditioner 200.

[0057] In some embodiments of the utility model, as shown in Figure 1 The air conditioner 200 further comprises a shell 70 and a heat exchanger 80, the heat exchanger 80 is arranged in the shell 70, and the air duct assembly 100 is arranged at the air outlet side of the heat exchanger 80. The first air supply air duct 310 intersects with the shell 70 to form a first air supply port, the second air supply air duct 320 intersects with the shell 70 to form a second air supply port, and the first air supply port and the second air supply port are arranged side by side.

[0058] In the embodiment, the airflow exchanges heat in the heat exchanger 80 to form a heat exchange airflow, and the heat exchange airflow flows to the direction of the first air supply port and the second air supply port under the action of the cross-flow fan 40. The heat exchange airflow passes through the guide plate 60, the first guide plate 610 guides part of the heat exchange airflow to the first air supply air duct 310, and then blows out from the first air supply port. The second guide plate 620 guides part of the heat exchange airflow to the second air supply air duct 320, and then blows out from the second air supply port.

[0059] At this point, those skilled in the art should realize that although the utility model has been shown and described in detail herein, many other variants or modifications conforming to the principles of the utility model can be directly determined or deduced according to the disclosure of the utility model without departing from the spirit and scope of the utility model. Therefore, the scope of the utility model should be understood and recognized as covering all these other variants or modifications.

Claims

1. A duct assembly comprising a volute and a volute tongue, the volute tongue and the volute forming a passageway therebetween, the passageway housing a crossflow fan therein; characterised in that, Also included are: a flow distribution block disposed at an outlet end of the channel, the flow distribution block having a first flow distribution surface and a second flow distribution surface, the first flow distribution surface forming a first air supply duct with the volute tongue, the second flow distribution surface forming a second air supply duct with the volute; the first air supply duct includes a first air outlet section, the first air outlet section being a converging section.

2. The air duct assembly of claim 1, wherein the second air supply duct includes a second air outlet section, the second air outlet section being a diverging section.

3. The air duct assembly of claim 2, wherein the first air supply duct further includes a first air inlet section, the first air inlet section being disposed at an air inlet side of the first air outlet section, the first air inlet section being a diverging section.

4. The air duct assembly of claim 3, wherein the second air supply duct includes a second air inlet section, the second air inlet section being disposed at an air inlet side of the second air outlet section, the second air inlet section being a converging section.

5. The air duct assembly of claim 4, wherein a width at an air inlet of the first air inlet section is greater than a width at an air inlet of the second air inlet section.

6. The air duct assembly of claim 4, wherein a width at an air inlet of the first air inlet section is greater than a width at an air outlet of the first air outlet section; a width at an air inlet of the second air inlet section is less than a width at an air outlet of the second air outlet section.

7. The air duct assembly of claim 1, wherein in a flow direction of the air flow, the channel is diverging, and the volute and the volute tongue are curved towards a side closer to the volute.

8. The air duct assembly of claim 1, further comprising: a flow guide plate disposed at an air inlet side of the first air supply duct and the second air supply duct.

9. The air duct assembly of claim 8, wherein a plurality of the flow guide plates are provided, the plurality of the flow guide plates are divided into a first flow guide plate and a second flow guide plate, the first flow guide plate guides the air flow to the first air supply duct, the second flow guide plate guides the air flow to the second air supply duct; in the flow direction of the air flow, the second flow guide plate is curved towards a side closer to the volute; the flow distribution block is wedge-shaped, and one of the second flow guide plates is disposed opposite to the flow distribution block at a side closer to the volute tongue.

10. An air conditioner characterized by comprising: An air duct assembly as claimed in any one of claims 1 to 9 is provided in a housing.

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