Air conditioner

Abstract

The utility model discloses an air conditioner and relates to the technical field of air conditioners, the air conditioner comprises a machine shell, a cross-flow wind wheel, an indoor side heat exchanger and a volute structure, the machine shell is provided with an air inlet, the cross-flow wind wheel and the indoor side heat exchanger are both arranged in the machine shell, and the indoor side heat exchanger is arranged on the side, facing the air inlet, of the cross-flow wind wheel; the volute structure comprises a volute body and a volute tongue, an air inlet channel and an air outlet channel which are communicated with each other are defined by the volute tongue and the volute body, the cross-flow wind wheel is installed between the volute tongue and the volute body, the volute tongue is provided with an air supplement channel, and the air supplement channel is communicated with the air supplement channel. The air inlet end of the air supplementing channel communicates with the side, away from the air inlet, of the indoor side heat exchanger, and the air outlet end of the air supplementing channel communicates with the air outlet channel. According to the technical scheme, the air supply effect of the air conditioner can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioners, in particular to an air conditioner. Background Art

[0002] In the prior art, air conditioners blow out air to send heat or cold air to the room for temperature adjustment, so as to achieve the purpose of adjusting the indoor temperature to the desired temperature. However, the existing air conditioners have poor air supply efficiency due to the unreasonable design of their internal air duct structure. Utility Model Content

[0003] The main purpose of the utility model is to provide an air conditioner, aiming to improve the air supply effect of the air conditioner.

[0004] To achieve the above-mentioned purpose, the air conditioner proposed by the present invention comprises:

[0005] a housing, provided with an air inlet;

[0006] A crossflow impeller and an indoor heat exchanger are both disposed in the casing, and the indoor heat exchanger is disposed on a side of the crossflow impeller facing the air inlet; and

[0007] The volute structure includes a volute body and a volute tongue, the volute tongue and the volute body enclose an air inlet duct and an air outlet duct that are interconnected, the cross-flow impeller is installed between the volute tongue and the volute body, the volute tongue is provided with an air supply channel, the air inlet end of the air supply channel is connected to the side of the indoor heat exchanger away from the air inlet, and the air outlet end of the air supply channel is connected to the air outlet duct.

[0008] In one embodiment, the volute tongue includes a first air guide section and a second air guide section arranged at an angle, the first air guide section close to the end of the air inlet is enclosed with the volute body to form the air inlet duct, the second air guide section is enclosed with the volute body to form the air outlet duct, and the air supply channel is arranged in the first air guide section.

[0009] In one embodiment, the air outlet end of the air supply channel is close to the connection between the first air guiding section and the second air guiding section.

[0010] In one embodiment, the volute tongue has a first air guiding section, and one end of the first air guiding section close to the air inlet is enclosed with the volute body to form the air inlet duct;

[0011] The indoor heat exchanger is spaced apart from at least the first air guiding section, so that the air inlet end of the air supply channel is connected to the gap between the first air guiding section and the indoor heat exchanger.

[0012] In one embodiment, a support plate is provided on a side of the volute tongue facing away from the volute body, and the support plate abuts against a side of the indoor heat exchanger facing the volute tongue.

[0013] In one embodiment, a water receiving groove is provided on a side of the volute tongue facing the indoor heat exchanger, and the support plate is disposed in the water receiving groove.

[0014] In one embodiment, the volute tongue includes a first air guide section and a second air guide section arranged at an angle, wherein an end of the first air guide section close to the air inlet is enclosed with the volute body to form the air inlet duct, and the second air guide section is enclosed with the volute body to form the air outlet duct;

[0015] The first air guide section and the water receiving trough are integrally formed; and / or the first air guide section and the second air guide section are separately formed.

[0016] In one embodiment, a plurality of the air supply channels are arranged at intervals along the length direction of the cross-flow impeller.

[0017] In one embodiment, the width of the air supply channel is less than or equal to 2 mm.

[0018] In one embodiment, the air conditioner includes a wall-mounted air conditioner indoor unit and an air conditioner outdoor unit connected to the wall-mounted air conditioner indoor unit, the wall-mounted air conditioner indoor unit includes the casing, and the cross-flow impeller, the indoor side heat exchanger and the volute structure arranged in the casing.

[0019] The technical solution of the present invention is to set an air inlet in the casing, and the crossflow fan and the indoor heat exchanger are both arranged in the casing, and the indoor heat exchanger is arranged on the side of the crossflow fan wheel facing the air inlet, and the volute structure includes a volute body and a volute tongue, and the volute tongue and the volute body are enclosed to form an air inlet duct and an air outlet duct that are interconnected, and the crossflow fan wheel is installed between the volute tongue and the volute body, so that after the external air enters the casing from the air inlet, it first undergoes heat exchange in the indoor heat exchanger, and then enters the air inlet duct after passing through the heat exchanger on the indoor side, and then flows out from the air outlet duct under the action of the crossflow fan wheel.

[0020] The volute tongue is provided with an air supply channel, and the air inlet end of the air supply channel is connected to the side of the indoor heat exchanger away from the air inlet, and the air outlet end of the air supply channel is connected to the air outlet duct. When the air outlet end of the air supply channel is located on the side of the air outlet duct close to the air inlet duct, after the external air enters the side of the air outlet duct close to the air inlet duct from the air supply channel, it will flow along the circumference of the cross flow impeller in the direction away from the air outlet duct due to the Coanda effect, and the rotation of the cross flow impeller generates a negative pressure effect, thereby sucking the external stable high-pressure airflow from the air supply channel into the air inlet side of the cross flow impeller, thereby further replenishing air for the air inlet duct. At the same time, the vortex center formed by the crossflow impeller will deviate toward the direction of the volute body due to the introduction of airflow, thereby changing the flow characteristics of the airflow, effectively guiding the airflow, reducing the backflow and vortex of the airflow inside the vortex impeller, thereby improving the air supply efficiency of the impeller and reducing noise. When the outlet end of the air supply channel is located on the side of the air outlet duct away from the air inlet duct, the outlet end of the air supply channel is located in the negative pressure area within the volute structure, thereby sucking the airflow between the indoor heat exchanger and the volute structure into the outlet duct and discharging it from the air outlet, thereby replenishing the air outlet duct, increasing the air volume at the air outlet, and improving the air supply efficiency. The air inlet end of the air supply channel is connected to the side of the indoor heat exchanger away from the air inlet, so that the airflow introduced into the air inlet duct is basically equal to the airflow temperature in the volute, so that condensation will not form in the volute structure and will be blown out with the airflow, which helps to improve the user's comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0022] Figure 1 A cross-sectional view of an embodiment of an air conditioner provided by the present utility model;

[0023] Figure 2 for Figure 1 A partial enlarged view of point A in the middle;

[0024] Figure 3 for Figure 1 A cross-sectional view of the volute structure in the air conditioner;

[0025] Figure 4 for Figure 3 A partial enlarged view of point A in the middle;

[0026] Figure 5 A comparison chart of air volume and speed data between the air conditioner provided by the utility model and the air conditioner in the prior art;

[0027] Figure 6 This is a comparison chart of noise and air volume data between the air conditioner provided by the utility model and the air conditioner in the prior art.

[0028] Description of Figure Numbers:

[0029] 1. Casing; 101. Air inlet; 11. Crossflow impeller; 12. Indoor heat exchanger; 13. Volute structure; 131. Volute body; 132. Volute tongue; 1321. First air guide section; 1322. Second air guide section; 133. Air inlet duct; 134. Air outlet duct; 135. Air supply channel; 136. Support plate; 137. Water receiving trough.

[0030] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0032] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0033] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0034] The present utility model provides an air conditioner, which may be a split-type air conditioner, and the present solution can be applied to both the indoor unit and the outdoor unit. The air conditioner may also be an integrated air conditioner, and the present solution can be applied to both the indoor module and the outdoor module of the integrated air conditioner. In this embodiment, the present solution is applied to the indoor unit. Preferably, the indoor unit is a wall-mounted unit. Of course, in other embodiments, the indoor unit may be a mobile unit, a cabinet unit, a window unit, or the like.

[0035] See also Figures 1 to 4 In one embodiment of the present invention, the air conditioner comprises:

[0036] The housing 1 is provided with an air inlet 101;

[0037] The crossflow impeller 11 and the indoor heat exchanger 12 are both disposed in the casing 1, and the indoor heat exchanger 12 is disposed on the side of the crossflow impeller 11 facing the air inlet 101; and

[0038] The volute structure 13 includes a volute body 131 and a volute tongue 132. The volute tongue 132 and the volute body 131 enclose an air inlet duct 133 and an air outlet duct 134 that are interconnected. The cross-flow impeller 11 is installed between the volute tongue 132 and the volute body 131. The volute tongue 132 is provided with an air supply channel 135. The air inlet end of the air supply channel 135 is connected to the side of the indoor heat exchanger 12 away from the air inlet 101, and the air outlet end of the air supply channel 135 is connected to the air outlet duct 134.

[0039] Specifically, see Figure 1 and Figure 3 The casing 1 is provided with an air inlet 101. The crossflow impeller 11 and the indoor heat exchanger 12 are both disposed within the casing 1, with the indoor heat exchanger 12 being disposed on the side of the crossflow impeller 11 facing the air inlet 101. The volute structure 13 includes a volute body 131 and a volute tongue 132. The volute tongue 132 and the volute body 131 enclose an air inlet duct 133 and an air outlet duct 134 that are interconnected. The crossflow impeller 11 is mounted between the volute tongue 132 and the volute body 131. The air inlet duct 133 is located on the air inlet side of the crossflow impeller 11, and the air outlet duct 134 is located on the air outlet side of the crossflow impeller 11. After external air enters the casing 1 through the air inlet 101, it first undergoes heat exchange in the indoor heat exchanger 12 before entering the air inlet duct 133. Finally, under the action of the crossflow impeller 11, it flows out through the air outlet duct 134. Furthermore, the air duct assembly in this solution adopts a cross-flow impeller 11 and a volute structure 13, which helps to improve the air supply efficiency and noise reduction effect of the air duct assembly, while reducing the overall size of the air conditioner indoor unit.

[0040] At present, the air supply efficiency of air conditioners, especially indoor air conditioners, is required to be high in order to accelerate the temperature adjustment effect of the indoor air conditioner and achieve rapid cooling or heating of the indoor space. In the prior art, the air supply efficiency of the air conditioner is usually improved by improving the streamline structure of the air duct inside the volute structure 13 or the air guide plate. For example, by adopting a curved air guide plate, the air supply pressure loss at the air outlet is reduced. However, this technology has been widely used in the industry, but the space for sustainable development is very limited, and it is difficult to achieve the effect of significantly increasing the air volume and reducing noise. Alternatively, the volute tongue 132 and the volute body 131 are linearly reconstructed to increase the air volume and reduce noise. This method may have a significant improvement in the air supply efficiency of the air conditioner, but this improvement method often requires redesigning the volute structure 13, which poses a great technical challenge and requires the development of a new hanging platform, which is costly.

[0041] Therefore, in this proposal, please refer to Figure 2 The volute tongue 132 is provided with an air supply channel 135, and the air inlet end of the air supply channel 135 is connected to the side of the indoor heat exchanger 12 away from the air inlet 101, and the air outlet end of the air supply channel 135 is connected to the air outlet duct 134, that is, one end of the air supply channel 135 is connected between the indoor heat exchanger 12 and the volute structure 13, and the other end is connected to the inside of the volute structure 13, thereby supplying air to the air outlet duct 134, increasing the air output of the air conditioner and improving the air supply efficiency.

[0042] When the outlet end of the air supply channel 135 is arranged on the side of the air outlet duct 134 close to the air inlet duct 133, after the external air enters the side of the air outlet duct 134 close to the air inlet duct 133 from the air supply channel 135, it will flow along the circumference of the cross flow impeller 11 in the direction away from the air outlet duct 134 due to the Coanda effect, and the rotation of the cross flow impeller 11 generates a negative pressure effect, thereby sucking the external stable high-pressure airflow from the air supply channel 135 into the air inlet side of the cross flow impeller 11, thereby further supplying air to the air inlet duct 133. At the same time, the vortex center formed by the cross-flow impeller 11 will be offset toward the direction of the volute body 131 due to the introduction of the air flow, thereby changing the flow characteristics of the air flow, effectively guiding the air flow, reducing the backflow and vortex of the air flow inside the vortex impeller, thereby improving the air supply efficiency of the impeller and reducing noise at the same time; when the air outlet end of the air supply channel 135 is located on the side of the air outlet duct 134 away from the air inlet duct 133, the air outlet end of the air supply channel 135 is located in the negative pressure area inside the volute structure 13, thereby sucking the air flow between the indoor heat exchanger 12 and the volute structure 13 into the air outlet duct 134 and discharging it from the air outlet, thereby replenishing air for the air outlet duct 134, increasing the air volume at the air outlet, and improving the air supply efficiency.

[0043] Figure 5This is a comparison chart of the air volume and speed data of the air conditioner provided by the utility model and the air conditioner in the prior art; the air volume of the air conditioner in this solution and the air conditioner in the prior art at different speeds were tested respectively, and the relevant data were recorded to obtain Figure 5 , Figure 5 The data represented by the broken line for air conditioner 1 is the air volume data for a conventional air conditioner (without supply air duct 135) at different speeds. The data represented by the broken line for air conditioner 2 is the air volume data for the air conditioner of this embodiment (with supply air duct 135) at different speeds. A comparison shows that, for the same wind speed of crossflow impeller 11, the air volume of the air conditioner of this embodiment is approximately 5% higher than that of the conventional air conditioner. Figure 6 This is a comparison chart of the noise and air volume data of the air conditioner provided by the utility model and the air conditioner in the prior art. The noise generated by the air conditioner in this solution and the air conditioner in the prior art at different air volumes was tested and the relevant data was recorded. Figure 6 , Figure 6 The data represented by the broken line for air conditioner 1 is the noise data of a conventional air conditioner (without supply air duct 135) at different air volumes. The data represented by the broken line for air conditioner 2 is the noise data of the air conditioner in this solution (with supply air duct 135) at different air volumes. A comparison shows that when the air volume of the crossflow impeller 11 is equal, the noise generated by the air conditioner in this solution is approximately 1dB less than that generated by the conventional air conditioner. Therefore, compared to the conventional solution, this solution not only helps increase the air volume of the air conditioner, but also reduces the noise of the air conditioner.

[0044] In this solution, the air inlet end of the air supply channel 135 is connected to the side of the indoor heat exchanger 12 away from the air inlet 101. Compared with the air inlet end of the air supply channel 135 being directly connected to the air inlet 101, the temperature of the air flow introduced into the air inlet duct 133 by the air supply channel 135 in this solution is basically equal to the temperature of the air flow in the volute structure 13, that is, the air flow introduced into the air inlet duct 133 is preliminarily dried by the indoor heat exchanger 12 (in cooling mode, the external air flow contacts the indoor heat exchanger 12 to form condensed water to analyze the water in the air), so condensation will not form in the volute structure 13, and will be blown out with the air flow, which helps to improve the user's comfort.

[0045] See also Figure 1 and Figure 2 , Figure 1The direction indicated by the middle arrow is the flow direction of the air flow in the air conditioner. After the external air enters the indoor unit of the air conditioner through the air inlet 101, it is heated through the indoor heat exchanger 12, and then most of the air flow enters the air inlet duct 133 through the air inlet end of the volute assembly, and a small part of the air flow enters the air inlet duct 133 through the air supply channel 135, so as to cause the vortex center of the cross-flow impeller 11 to shift, thereby improving the air supply efficiency, and then they are blown out together through the air outlet duct 134.

[0046] In an embodiment of the present utility model, the volute tongue 132 includes a first air guide section 1321 and a second air guide section 1322 arranged at an angle. The first air guide section 1321 is close to the end of the air inlet 101 and is enclosed with the volute body 131 to form an air inlet duct 133. The second air guide section 1322 and the volute body 131 are enclosed to form an air outlet duct 134. The air supply channel 135 is arranged in the first air guide section 1321. Specifically, the first air guide section 1321 and the second air guide section 1322 are set at an angle, and the corner at the connection between the two is usually rounded. The first air guide section 1321 and the volute body 131 are enclosed to form an air inlet duct 133, and the second air guide section 1322 and the volute body 131 are enclosed to form an air outlet duct 134, and the air supply channel 135 is provided in the first air guide section 1321 to facilitate the processing of the air supply channel 135, and also to facilitate the air inlet end of the air supply channel 135 to connect to the side of the indoor heat exchanger 12 away from the air inlet 101.

[0047] In this embodiment, multiple air supply channels 135 are spaced apart along the length of the crossflow impeller 11. Specifically, the air supply channels 135 are configured as through holes extending through the first air guide section 1321. Thus, the multiple through holes are spaced apart along the length of the crossflow impeller 11, thereby further ensuring the air supply effect of the air supply channels 135 on the air inlet ducts 133, 133, and ensuring air supply uniformity. The cross-sectional shape of the through holes can be circular, square, polygonal, or the like.

[0048] Furthermore, the outlet end of the supplementary air channel 135 is close to the connection between the first air guide section 1321 and the second air guide section 1322. Specifically, because the outlet end of the supplementary air channel 135 is connected to the air inlet duct 133, the outlet end of the supplementary air channel 135 can be located at the first air guide section 1321 or at the connection between the first air guide section 1321 and the second air guide section 1322. Moreover, because the supplementary air channel 135 is located at the first air guide section 1321, the outlet end of the supplementary air channel 135 can be close to the connection between the first air guide section 1321 and the second air guide section 1322.

[0049] In order to facilitate the air intake of the air supply channel 135, in the embodiment of the present invention, please refer to Figure 1 and Figure 2The volute tongue 132 has a first air guiding section 1321 , and one end of the first air guiding section 1321 close to the air inlet 101 is enclosed with the volute body 131 to form an air inlet duct 133 ;

[0050] The indoor heat exchanger 12 is spaced apart from at least the first air guiding section 1321 so that the air inlet end of the air supply channel 135 is connected to the gap between the first air guiding section 1321 and the indoor heat exchanger 12 .

[0051] Specifically, the indoor heat exchanger 12 is formed by splicing together multiple sub-heat exchangers, which are collectively enclosed at the air inlet end of the volute structure 13. This improves air intake efficiency while reducing the overall size of the air conditioner. At least a portion of the indoor heat exchanger 12 overlaps with the first air guide section 1321, thereby reducing the possibility of normal temperature airflow directly entering the supply air duct 135. To further reduce resistance at the air inlet end of the supply air duct 135, the indoor heat exchanger 12 is spaced apart from at least the first air guide section 1321, so that the air inlet end of the supply air duct 135 communicates with the gap between the first air guide section 1321 and the indoor heat exchanger 12. This not only reduces resistance at the air inlet end of the supply air duct 135, but also facilitates the flow of air after heat exchange in other parts of the indoor heat exchanger 12 to supply the supply air duct 135.

[0052] Furthermore, a support plate 136 is provided on the side of the volute tongue 132 facing away from the volute body 131. The support plate 136 abuts against the side of the indoor heat exchanger 12 facing the volute tongue 132. Specifically, on the one hand, the support plate 136 can support the indoor heat exchanger 12, thereby facilitating the installation of the indoor heat exchanger 12. On the other hand, the support plate 136 can further block the gap between the indoor heat exchanger 12 and the second air guide section 1322, thereby reducing the possibility of airflow at the air inlet 101 directly entering the supplementary air duct 135 through the gap between the indoor heat exchanger 12 and the second air guide section 1322.

[0053] Furthermore, a water receiving groove 137 is provided on the side of the volute 132 facing the indoor heat exchanger 12, and the support plate 136 is provided in the water receiving groove 137. Specifically, the support plate 136 is directly provided in the water receiving groove 137, thereby reducing the position interference between the support plate 136 and the water receiving groove 137 and facilitating the processing of the support plate 136.

[0054] In order to facilitate the processing of the volute structure 13, in the embodiment of the present utility model, please refer to Figure 1 and Figure 3 The volute tongue 132 includes a first air guiding section 1321 and a second air guiding section 1322 arranged at an angle. The end of the first air guiding section 1321 close to the air inlet 101 is enclosed with the volute body 131 to form an air inlet duct 133. The second air guiding section 1322 and the volute body 131 are enclosed to form an air outlet duct 134.

[0055] The first air guiding section 1321 and the water receiving trough 137 are integrally formed; and / or, the first air guiding section 1321 and the second air guiding section 1322 are separately formed.

[0056] Specifically, the first air guide section 1321 and the water receiving trough 137 are integrally formed, facilitating assembly of the air conditioner while ensuring the installation strength of the water receiving trough 137, thereby ensuring the support strength of the support plate 136 for the indoor heat exchanger 12. Furthermore, this reduces the possibility of air leakage between the first air guide section 1321 and the water receiving trough 137. The first air guide section 1321 and the second air guide section 1322 are formed separately, facilitating the formation of the volute air duct and allowing for easy adjustment of the angle between the first air guide section 1321 and the second air guide section 1322, thereby facilitating air guidance within the duct structure.

[0057] In this embodiment, the volute body 131 and the volute tongue 132 are formed separately and joined together. Therefore, the first air-guiding section 1321 and the second air-guiding section 1322 can be joined or bonded together, or both can be joined or bonded together to the volute body 131. In other embodiments, the volute body 131 and the volute tongue 132 are formed integrally.

[0058] In other embodiments, the water receiving trough 137 can be formed separately from the first air guiding section 1321, such as by bonding or clamping the two together; or the second air guiding section 1322 can be formed integrally with the water receiving trough 137. In other embodiments, the first air guiding section 1321 and the second air guiding section 1322 are formed integrally.

[0059] In the embodiment of the present invention, the width of the air supply channel 135 is less than or equal to 2 mm. Figure 2 The width of the supply air channel 135 is D, which is the dimension of the supply air channel 135 along an axial direction substantially parallel to the air inlet duct 133. If the width of the supply air channel 135 is greater than 2 mm, the aperture of the supply air channel 135 is too large, which may further disrupt the airflow in the supply air channel 135. Specifically, the width of the supply air channel 135 can be 2 mm, 1.8 mm, 1.7 mm, 1.5 mm, 1.2 mm, etc.

[0060] The above are merely exemplary embodiments of the present invention and are not intended to limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included in the patent protection scope of the present invention.

Claims

1. An air conditioner, characterized in that: include: a housing, provided with an air inlet; The cross-flow impeller and the indoor heat exchanger are both arranged in the casing, and the indoor heat exchanger is arranged on the side of the cross-flow impeller facing the air inlet; as well as The volute structure includes a volute body and a volute tongue, the volute tongue and the volute body enclose an air inlet duct and an air outlet duct that are interconnected, the cross-flow impeller is installed between the volute tongue and the volute body, the volute tongue is provided with an air supply channel, the air inlet end of the air supply channel is connected to the side of the indoor heat exchanger away from the air inlet, and the air outlet end of the air supply channel is connected to the air outlet duct.

2. The air conditioner according to claim 1, wherein The volute tongue includes a first air guide section and a second air guide section arranged at an angle. The first air guide section is close to the air inlet at one end and is combined with the volute body to form the air inlet duct. The second air guide section is combined with the volute body to form the air outlet duct. The air supply channel is arranged in the first air guide section.

3. The air conditioner according to claim 2, wherein: The air outlet end of the air supply channel is close to the connection between the first air guiding section and the second air guiding section.

4. The air conditioner according to claim 1, wherein The volute tongue has a first air guiding section, and one end of the first air guiding section close to the air inlet is enclosed with the volute body to form the air inlet duct; The indoor heat exchanger is spaced apart from at least the first air guiding section, so that the air inlet end of the air supply channel is connected to the gap between the first air guiding section and the indoor heat exchanger.

5. The air conditioner according to claim 1, wherein A support plate is provided on the side of the volute tongue facing away from the volute body, and the support plate abuts against the side of the indoor heat exchanger facing the volute tongue.

6. The air conditioner according to claim 5, wherein: A water receiving groove is provided on the side of the volute tongue facing the indoor heat exchanger, and the support plate is arranged in the water receiving groove.

7. The air conditioner according to claim 6, wherein: The volute tongue includes a first air guide section and a second air guide section arranged at an angle, wherein an end of the first air guide section close to the air inlet is enclosed with the volute body to form the air inlet duct, and the second air guide section is enclosed with the volute body to form the air outlet duct; The first air guide section and the water receiving trough are integrally formed; and / or the first air guide section and the second air guide section are separately formed.

8. The air conditioner according to claim 1, wherein: A plurality of air supply channels are arranged at intervals along the length direction of the cross-flow impeller.

9. The air conditioner according to claim 1, wherein: The width of the air supply channel is less than or equal to 2 mm.

10. The air conditioner according to claim 1, wherein The air conditioner includes a wall-mounted indoor air conditioner and an outdoor air conditioner connected to the wall-mounted indoor air conditioner. The wall-mounted indoor air conditioner includes the casing, the cross-flow impeller, the indoor heat exchanger and the volute structure arranged in the casing.

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