Air conditioner indoor unit and air conditioner

Abstract

The present invention provides an indoor air conditioner and an air conditioner including the indoor air conditioner. The indoor air conditioner includes a chassis and a wind wheel. The chassis includes a volute plate and two end plates disposed on both end faces of the volute plate. The chassis further includes a transition section. Two ends of the transition section are respectively connected to the volute plate and the end plate. The wind wheel is disposed inside the chassis, and the length of the wind wheel is greater than the length of the volute plate. There is a gap between both ends of the wind wheel and the end plate. An air outlet is provided on the side surface of the volute plate. At least part of the transition section is inclined to guide the air flow in the gap to flow out from the air outlet. In this way, the present invention solves the problem of relatively large noise in the prior art indoor air conditioner.

Description

Technical Field

[0001] The present invention relates to the technical field of household appliances, and particularly to an indoor unit of an air conditioner and an air conditioner including the indoor unit of the air conditioner. Background Art

[0002] In the existing indoor unit of an air conditioner, there are two matching forms between the impeller and the volute plate. One is that the impeller is shorter than the volute plate, and the other is that the impeller is longer than the volute plate. When the impeller is shorter than the volute plate, the impact generated by the axial rotation vortex explosion during the operation of the impeller directly enters the volute plate from the radial blade direction of the impeller, impacting the volute plate gas, thereby increasing the rotation noise of the volute plate. When the impeller is longer than the volute plate, the air pressure at both ends of the impeller is relatively low. This causes the air flow at both ends of the impeller to make a reciprocating circular motion around the end faces and unable to flow out of the end faces. At the same time, the axial air flow of the impeller will move towards both ends, which will cause the air flow to enter the impeller interior again. When the air flow enters the impeller, it passes through the surface of the blades, causing the bubble explosion on the surface of the blades, increasing the noise. At the same time, the air flow entering the impeller interior forces the axial air flow of the impeller to flow, accelerating the speed of the vortex explosion at the center of the impeller, thereby increasing the rotation noise of the whole machine. Specifically, the existing indoor unit of an air conditioner has a problem of relatively large noise. Summary of the Invention

[0003] The main object of the present invention is to propose an indoor unit of an air conditioner and an air conditioner including the indoor unit of the air conditioner, aiming to solve the problem of relatively large noise in the existing indoor unit of an air conditioner.

[0004] The present invention proposes an indoor unit of an air conditioner. The indoor unit of the air conditioner includes a chassis and an impeller. The chassis includes a volute plate and two end plates provided on both end faces of the volute plate. The chassis further includes a transition section, and both ends of the transition section are respectively connected to the volute plate and the end plate. The impeller is arranged inside the chassis. The length of the impeller is greater than the length of the volute plate, and both ends of the impeller extend out from both ends of the volute plate. There are gaps between both ends of the impeller and the two end plates. An air outlet is provided on the side surface of the volute plate. At least part of the transition section is inclined to form an inclined section, and the inclined section is used to guide the air flow in the gap to flow out from the air outlet.

[0005] In an optional embodiment, a receiving cavity is provided inside the volute plate. The impeller is partially located in the receiving cavity. An installation opening communicating with the receiving cavity is provided on the side surface of the volute plate. The installation opening extends along the length direction of the volute plate, and the inclination degree of the inclined section gradually decreases towards the direction close to the installation opening.

[0006] In an alternative embodiment, the projection of the inner edge of the inclined section on the end face is a first arc, the projection of the outer edge of the inclined section on the end face is a second arc, and the distance between the first arc and the second arc gradually decreases in the direction approaching the installation opening.

[0007] In an alternative embodiment, the projection of the outer edge of the volute plate on the end face is a third arc. The point located on the second arc and having the maximum distance from the first arc is the center point, and the distance from the center point to the third arc is a, where a is not less than 0.5 mm and not greater than 30 mm.

[0008] In an alternative embodiment, the length of the projection of the inclined section on the side face is not less than 5 mm and not greater than 20 mm.

[0009] In an alternative embodiment, the inclined section includes an arc-shaped inclined section and / or a straight inclined section.

[0010] In an alternative embodiment, the arc-shaped inclined section is convex inward.

[0011] In an alternative embodiment, the arc-shaped inclined section is concave inward.

[0012] In an alternative embodiment, the transition section includes a plurality of straight inclined sections with different slopes.

[0013] In an alternative embodiment, the transition section further includes a horizontal section, and the horizontal section is disposed between the end plate and the inclined section.

[0014] The present invention also provides an air conditioner, which includes the above-mentioned indoor unit of the air conditioner.

[0015] By providing an indoor unit of an air conditioner and an air conditioner including the indoor unit of the air conditioner, specifically, at least a part of the transition section of the indoor unit of the air conditioner is inclined to guide the air flow between the impeller and the end plate out of the chassis, thereby effectively avoiding the situation that the air flow makes reciprocating circular motions around the end face. In this way, the present invention can solve the problem of relatively large noise in the existing indoor unit of the air conditioner. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0017] Figure 1Schematic diagram of the structure of an air conditioner indoor unit in the prior art;

[0018] Figure 2 is Figure 1 an enlarged view of part A in

[0019] Figure 3 is Figure 1 a schematic diagram of the structure of another perspective of the air conditioner indoor unit in the prior art in

[0020] Figure 4 is Figure 3 a cross-sectional view of the air conditioner indoor unit along B-B in

[0021] Figure 5 a cross-sectional view of an embodiment of the air conditioner indoor unit of the present invention;

[0022] Figure 6 a partial structure schematic diagram of an embodiment of the air conditioner indoor unit of the present invention;

[0023] Figure 7 is Figure 6 an enlarged view of the first embodiment of the transition section in

[0024] Figure 8 is Figure 6 an enlarged view of the second embodiment of the transition section in

[0025] Figure 9 is Figure 6 an enlarged view of the third embodiment of the transition section in

[0026] Figure 10 is Figure 6 an enlarged view of the fourth embodiment of the transition section in

[0027] Figure 11 is Figure 6 an enlarged view of the fifth embodiment of the transition section in

[0028] Figure 12 is Figure 6 an enlarged view of the sixth embodiment of the transition section in

[0029] Figure 13 is Figure 6 an enlarged view of the seventh embodiment of the transition section in

[0030] Figure 14 is Figure 6 an enlarged view of the eighth embodiment of the transition section in

[0031] Explanation of the reference numerals in the drawings:

[0032] Label Name Label Name 100，100’ Air conditioner indoor unit 10，10’ Chassis 11，11’ Volute plate 12，12’ End plate 13，13’ Transition section 131 Inclined section 131a First arc-shaped inclined section 131b Second arc-shaped inclined section 131c Straight inclined section 132，132’ Horizontal section 14a First circular arc 14b Second circular arc 14c Third circular arc 20 Wind wheel 30，30’ Drive part 31’ Bearing chamber

[0033] The realization, functional features and advantages of the present invention will be further described in conjunction with embodiments with reference to the accompanying drawings. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0035] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present invention, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0036] In addition, if there are descriptions such as "first", "second", etc. involved 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 quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and / or" appearing throughout the text is that it includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or a solution that satisfies both A and B 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 fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0037] Please refer to Figure 1 , in the prior art air conditioner indoor unit 100', there are two matching forms between the volute plate 11' and the impeller 20'. One is that the impeller 20' is longer than the volute plate 11', and the other is that the impeller 20' is shorter than the volute plate 11'. A wind wheel cavity is formed inside the volute plate 11'. Therefore, the length of the volute plate 11' is the length of the wind wheel cavity. When the impeller 20' is shorter than the wind wheel cavity, the impact generated by the axial rotation eddy current explosion during the operation of the impeller 20' directly enters the wind wheel cavity from the radial blade direction of the impeller 20', impacting the air in the wind wheel cavity, thereby increasing the rotational noise of the wind wheel cavity.

[0038] Please refer to Figure 1 , Figure 2 , Figure 3, when the wind wheel 20' is longer than the wind wheel cavity, a transition section 13 is further provided between the volute plate 11' and the end plate 12'. At this time, the area of the end plate 12' is slightly smaller than the area of the volute plate 11'. The transition section 13 is a transition connection structure between the volute plate 11' and the end plate 12'. In the prior art, the transition section 13 is often arranged in a stepped shape. Specifically, the stepped transition section 13 includes a horizontal section 132' parallel to the length direction. One end of the horizontal section 132' is connected to the end plate 12', and the other end is connected to the volute plate 11' through a vertical section. It should be noted that the length of the horizontal section 132' (i.e., the step width) is not less than 10'mm. The distance between the end plate 12' and the wind wheel 20' is often set at about 5mm. In addition, the air conditioner indoor unit 100' further includes a driving member 30' disposed outside the chassis 10'. The driving member 30' drives the wind wheel 20' to operate through a connecting bearing. The end plate 12' protrudes outward to form a bearing chamber 31' for accommodating the connected bearing.

[0039] It should be noted that there is a gap between the end face of the wind wheel 20' and the end plate 12', and the horizontal section 132' is arranged along the length direction. At this time, the end face of the wind wheel 20' and the end plate 12' are in a concentric circular arc surface fit. The air flows at both ends of the wind wheel 20' make circular reciprocating motions at the overlapping position of the end face and the end plate 12', resulting in the air flow in the overlapping section being in a balanced state. The external air flow cannot enter the wind wheel 20', and the internal air flow cannot flow out of the end face. That is, the wind wheel 20' in this overlapping section does not contribute to the air volume of the wind wheel cavity, and it will also increase the length dimension of the wind wheel cavity.

[0040] Analyzing from another angle, since the end faces at both ends of the wind wheel 20' and the end plate 12' are in a concentric circular arc fit. This causes the air pressure at both ends of the wind wheel 20' to be lower than that at other positions. This will cause the axial air flow of the wind wheel 20' to move towards both ends. And because the mating surfaces at both ends are arranged in concentric circular arcs, it will guide the air flow moving to both ends to flow into the inside of the wind wheel 20' from both ends for the second time. The air flow entering the wind wheel 20' in this way passes through the blade surface, causing the bubbles on the blade surface to burst and the noise to increase. At the same time, the air flow entering the inside of the wind wheel 20' forces the axial air flow of the wind wheel 20' to flow, accelerating the central eddy burst speed of the wind wheel 20', thereby causing the rotational noise of the whole machine to increase.

[0041] Please refer to Figure 5 、 Figure 6 、 Figure 7, the present invention provides an air conditioner indoor unit 100, which includes a chassis 10 and a wind wheel 20. The chassis 10 includes a volute plate 11 and two end plates 12 provided on both end faces of the volute plate 11. The chassis 10 further includes a transition section 13, and both ends of the transition section 13 are respectively connected to the volute plate 11 and the end plate 12; the wind wheel 20 is arranged inside the chassis 10, the length of the wind wheel 20 is greater than the length of the volute plate 11, and both ends of the wind wheel 20 extend out from both ends of the volute plate 11. There are gaps between both ends of the wind wheel 20 and the two end plates 12. An air outlet is provided on the side surface of the volute plate 11, and at least part of the transition section 13 is inclined to form an inclined section 131, and the inclined section 131 is used to guide the air flow in the gap to flow out from the air outlet.

[0042] Based on the previous embodiment, both ends of the wind wheel 20 extend out from both ends of the volute plate 11, and a mating gap is formed between both ends and the two end plates 12. It should be noted that the projected area of the end plate 12 on the end face is smaller than the projected area of the openings at both ends of the volute plate 11 on the end face. To facilitate guiding the air flow, taking the inclined section 131 located on the lower side as an example, the height of the highest point of the inclined section 131 is lower than the height of the lowest point of the end plate 12, and the height of the lowest point of the inclined section 131 is greater than the height of the highest point of the volute plate 11.

[0043] Specifically, the partially inclined transition section 13 can guide the air flow in the gap to flow out from the air outlet, rather than making the air flow move in a circular reciprocating motion within the overlapping mating surface. Specifically, the mating surfaces of both ends of the wind wheel 20 and the wind wheel cavity cause a negative pressure area to appear in the gaps at both ends of the wind wheel 20. When the positive pressure air flow in the axial direction of the wind wheel 20 flows towards the negative pressure area, the air flow flows out from the position of the inclined transition section 13 and enters the air outlet position. Such a setting can enable the air flow located in the gap to also flow out from the air outlet, increasing the air volume of the entire wind wheel cavity system. At the same time, the negative pressure area is enclosed, so that when the axial eddy current runs towards both ends, it will not flow out from the side. Instead, it can impact the inclined partial transition section 13, reducing the noise generated by the eddy current.

[0044] In addition, the partially inclined transition section 13 plays a guiding role in the air flow in the gap, so that the air flow no longer enters the wind wheel 20 for the second time, and the radial rotation noise caused by the bubble bursting on the blade surface appears. Thus, the air conditioner indoor unit 100 proposed by the present invention and various devices applying the air conditioner indoor unit 100 have the advantage of relatively low noise.

[0045] Specifically, a comparative experiment was conducted between an embodiment of the air conditioner indoor unit 100 proposed by the present invention and the air conditioner indoor unit 100 in the prior art. The specific experimental results are shown in Table 1. It can be seen that when the rotational speed of the driving member 30, i.e., the motor speed, is the same, the noise of the air conditioner indoor unit 100 proposed by the present invention is significantly reduced. And when the generated noise amount is the same, the air conditioner indoor unit 100 proposed by the present invention can provide a larger air volume. In one embodiment, when the motor speed is 1200 r / min, the noise of the air conditioner indoor unit 100 in the prior art is 41.9 dB. The noise of the air conditioner indoor unit 100 proposed in this application is 40.5 dB. And when the generated noise is 41.9 dB, the air volume of the air conditioner indoor unit 100 in the prior art is 633 m 3 / h, and the air volume of the air conditioner indoor unit 100 in this application is 668 m 3 / h.

[0046] Table 1

[0047]

[0048] Please refer to Figure 4 and Figure 5 , in an alternative embodiment, a receiving cavity is provided inside the volute plate 11, a part of the impeller 20 is located inside the receiving cavity, an installation opening communicating with the receiving cavity is provided on the side surface of the volute plate 11, the installation opening extends along the length direction of the volute plate 11, and the inclination degree of the inclined section 131 gradually decreases towards the direction close to the installation opening.

[0049] In one embodiment, the air conditioner indoor unit 100 is a wall-mounted air conditioner indoor unit. In another embodiment, the air conditioner indoor unit can also be a floor-standing air conditioner indoor unit, a window unit, a ceiling-mounted air conditioner indoor unit, etc.

[0050] Taking the wall-mounted air conditioner indoor unit as an example for illustration, the wall-mounted air conditioner indoor unit has a front panel assembly, the front panel assembly covers the installation opening, and an air outlet is formed between the front panel assembly and the volute tongue. Therefore, in order to better guide the air flow to the air outlet, we have made a special setting for the inclination degree of the inclined section 131. Specifically, it can be described from two dimensions: the projection of the inclined section 131 on the side surface and the projection of the inclined section 131 on the end surface. The end surface is the plane where the end plate 12 is located. The side surface is perpendicular to the end surface, and two parallel straight lines in the length direction of the impeller cavity pass through the side surface.

[0051] Thus, the degree of inclination described above is the degree of inclination from the edge of the volute plate 11 to the edge of the end plate 12. The closer to the direction of the installation opening, the lower the degree of inclination of the inclined section 131. During the manufacturing process, this degree of inclination can be changed by changing the shapes of the end plate 12 and the volute plate 11.

[0052] Specifically, one end of the transition section 13 is connected to the interface of the end plate 12, and the other end is connected to the interface of the volute plate 11. And the transition section 13 proposed in the application includes an inclined section 131 that is inclined. To adapt to this inclined setting, the shapes of the interface of the end plate 12 and the interface of the volute plate 11 are not in one-to-one correspondence. Specifically, the shape of the interface of the volute plate 11 extends beyond the interface of the end plate 12 by a certain distance. To achieve the inclination of the transition section 13. It should be noted that, in order to achieve a better drainage effect, the distance between the interface of the volute plate 11 and the interface of the end plate 12 is not equidistant. The closer to the installation opening, the distance between the two gradually decreases. Thus, the degree of inclination of the inclined section also decreases accordingly. Until at the installation opening, the interfaces of the volute plate 11 and the end plate 12 on the end face are close to coinciding, and the degree of inclination of the inclined section 131 is the smallest here.

[0053] Please refer to Figure 4 and Figure 5 , in an alternative embodiment, the projection of the inner edge of the inclined section 131 on the end face is a first arc 14a, and the projection of the outer edge of the inclined section 131 on the end face is a second arc 14b, and the distance between the first arc 14a and the second arc 14b gradually decreases in the direction close to the installation opening.

[0054] Illustrated by the projection of the inclined section 131 on the end face. Please refer to Figure 4 , Figure 4 is a cross-sectional view of an air conditioner indoor unit 100 in the prior art. It can be seen that Figure 4 the first arc 14a and the second arc 14b in Figure 5 is a cross-sectional view of an embodiment of the air conditioner indoor unit 100 in the present application. It can be seen that the two ends of the first arc 14a and the second arc 14b close to the installation opening coincide, and the distance gradually increases at the end far from the installation opening. Since the transition section 13 connects the end plate 12 and the volute plate 11, the projection shape of the transition section 13 on the end face can be changed by processing the volute plate 11 and the end plate 12.

[0055] Please refer to Figure 5, in another optional embodiment, the projection of the inner edge of the inclined section 131 on the end surface is a first circular arc 14a, the projection of the outer edge of the inclined section 131 on the end surface is a second circular arc 14b, and the projection of the outer edge of the volute plate 11 on the end surface is a third circular arc 14c. The point on the second circular arc 14b that is at the maximum distance from the first circular arc 14a is the center point, and the distance from the center point to the third circular arc 14c is a, where a is not less than 0.5 mm and not greater than 30 mm.

[0056] Specifically, the distance from the center point to the third circular arc. That is, on the straight line connecting the common center of the first circular arc 14a and the second circular arc 14b to the center point, a is the distance extended from the center point to the third circular arc 14c on this straight line. Optionally, this distance can be 2 mm, 5 mm, 10 mm, 15 mm, 20 mm, 25 mm. We can control the inclination degree of the transition section 13 by controlling the size of a. Within this size range, the transition section 13 will not lose its original function and can effectively guide the airflow of the wind wheel 20 to flow out from the air outlet.

[0057] Please refer to Figure 6 , Figure 7 , in an optional embodiment, the length of the projection of the inclined section 131 on the side surface is not less than 5 mm and not greater than 20 mm. Specifically, since the gap size between the end surface of the wind wheel 20 and the end plate 12 is often set to 5 mm. We also put forward certain requirements for the length of the transition section 13. When the length of the inclined section 131 is between 5 mm and 20 mm, such as 8 mm, 10 mm, 15 mm, 18 mm, etc., this length data can be measured by a tape measure. The inclined section 131 with this length will not lose its original function and can effectively guide the airflow.

[0058] In an optional embodiment, the inclined section 131 includes an arc-shaped inclined section 131 and / or a straight-line inclined section 131. The specific shape of the inclined section 131 can be in various forms. It should be noted that the shape of the inclined section 131 discussed here refers to the cross-sectional shape of any one of the inclined sections 131 parallel to the side surface. At this time, the inclined section 131 can be arranged in an arc shape or in a straight line. At the same time, the number of the inclined sections 131 is not limited either. The inclined section 131 can include a single arc-shaped inclined section 131 or a single straight-line inclined section 131. Optionally, the inclined section 131 can also include multiple different arc-shaped inclined sections 131 or straight-line inclined sections 131.

[0059] Please refer to Figures 6 to 14 . Figure 6 In, C is the transition section 13. Figures 7 to 14They are several possible embodiments of the transition section 13, namely Embodiment C1, C2, C3, C4, C5, C6, C7, and C8 in sequence. It should be noted that Figures 7 to 14 is a schematic diagram of the transition section 13 located on the lower side.

[0060] Please refer to Figure 7 , in Embodiment C1, the arc-shaped inclined section 131 is convexly arc-shaped inward. In the transition section 13 located on the lower side. The highest point of the convex arc is lower than the lowest point of the end plate 12. In the transition section 13 located on the upper side, the lowest point of the convex arc is higher than the highest point of the end plate 12. Such a setting can ensure the drainage effect of the inclined section 131.

[0061] Please refer to Figure 8 , in Embodiment C2, the arc-shaped inclined section 131 is concavely arc-shaped inward. In the transition section 13 located on the lower side. The lowest point of the concave arc is higher than the highest point of the volute plate 11. In the transition section 13 located on the upper side, the highest point of the concave arc is lower than the highest point of the volute plate 11.

[0062] Please refer to Figure 9 , in Embodiment C3, the inclined section 131 includes a plurality of straight inclined sections 131 with different slopes. In order to achieve a better guiding effect. Optionally, the slope of the inclined section 131 close to the end plate 12 is greater than the slope of the inclined section 131 close to the volute plate 11. In one embodiment, the inclined section 131 includes two straight inclined sections 131.

[0063] Please refer to Figure 10 , Figure 11 , the inclined section 131 can also be composed of an arc-shaped inclined section 131 and a straight inclined section 131. In Embodiment C4, from the volute plate 11 to the end plate 12, the inclined section 131 includes a first arc-shaped inclined section 131a arranged in a convex arc, and a straight inclined section 131. In Embodiment C5, the inclined section 131 includes a second arc-shaped inclined section 131b arranged in a concave arc inward, and a straight inclined section 131.

[0064] Please refer to Figure 12 , Figure 13 , Figure 14, in an optional embodiment, the transition section 13 further includes a horizontal section 132. One end of the horizontal section 132 is connected to the inclined section 131, and the other end is connected to the end plate 12. In another embodiment, the horizontal section 132 may not be provided in the transition section 13. The overall length of the transition section 13 can be adjusted by adjusting the length of the horizontal section 132. Thus, when the length of the transition section 13 needs to be adjusted, the slope of the inclined section 131 does not need to be changed. Among them, the transition section 13 in Embodiment C6 includes a horizontal section 132 and a first arc-shaped inclined section 131a. The transition section 13 in Embodiment C7 includes a horizontal section 132 and a second arc-shaped inclined section 131b. The transition section 13 in Embodiment C8 includes a horizontal section 132 and a third arc-shaped inclined section 131.

[0065] The present invention also provides an air conditioner, which includes the above-mentioned air conditioner indoor unit. Since the air conditioner adopts all the technical solutions of the above-mentioned all embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be elaborated one by one here.

[0066] The above are only optional embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural transformation made under the concept of the present invention by using the content of the specification and drawings of the present invention, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. An air conditioner indoor unit, characterized in that, Comprising: A chassis, the chassis including a volute plate, and two end plates disposed on both end faces of the volute plate; the chassis further includes a transition section, and two ends of the transition section are respectively connected to the volute plate and the end plate; An air wheel, disposed inside the chassis, the length of the air wheel being greater than the length of the volute plate, and both ends of the air wheel extending out from both ends of the volute plate, there being gaps between both ends of the air wheel and the two end plates, an air outlet being provided on the side surface of the volute plate, at least part of the transition section being inclined to form an inclined section, and the inclined section being used to guide the air flow in the gap to flow out from the air outlet.

2. The air conditioner indoor unit according to claim 1, characterized in that, A receiving cavity is provided inside the volute plate, a part of the air wheel is located inside the receiving cavity, an installation opening communicating with the receiving cavity is provided on the side surface of the volute plate, the installation opening extends along the length direction of the volute plate, and the inclination degree of the inclined section gradually decreases in the direction close to the installation opening.

3. The air conditioner indoor unit according to claim 2, characterized in that The projection of the inner edge of the inclined section on the end surface is a first arc, the projection of the outer edge of the inclined section on the end surface is a second arc, and the distance between the first arc and the second arc gradually decreases in the direction close to the installation opening.

4. The air conditioner indoor unit according to claim 3, wherein, The projection of the outer edge of the volute plate on the end surface is a third arc, the point provided on the second arc and having the maximum distance from the first arc is the center point, and the distance from the center point to the third arc is a, where a is not less than 0.5 mm and a is not greater than 30 mm.

5. The air conditioner indoor unit according to claim 1, characterized in that, The length of the projection of the inclined section on the side surface is not less than 5 mm and not greater than 20 mm.

6. The indoor air conditioner according to any one of claims 1 to 5, characterized in that, The inclined section includes an arc-shaped inclined section and / or a straight-line inclined section.

7. The air conditioner indoor unit according to claim 6, characterized in that, The arc-shaped inclined section is convexly arc-shaped inward.

8. The air conditioner indoor unit according to claim 6, characterized in that, The arc-shaped inclined section is concavely arc-shaped inward.

9. The air conditioner indoor unit according to claim 6, characterized in that, The transition section includes a plurality of straight-line inclined sections with different slopes.

10. The air conditioner indoor unit according to claim 6, characterized in that, The transition section further includes a horizontal section, and the horizontal section is provided between the end plate and the inclined section.

11. An air conditioner, characterized in that, The air conditioner includes the air conditioner indoor unit according to any one of claims 1 to 10.

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