Air guide assembly and air conditioner indoor unit

Abstract

The application provides a guide air assembly and an air conditioner indoor unit. The guide air assembly comprises: a guide ring, the guide ring has oppositely arranged inlet and outlet ends, the inlet end surrounds a guide inlet, the outlet end surrounds a guide outlet, the guide ring further has a guide channel which is in communication with the guide inlet and the guide outlet, and the inlet end is arranged opposite to a heat exchanger; a fan blade is rotatably arranged in the guide channel, and the fan blade is arranged opposite to the heat exchanger; along the extension direction of the guide channel, the fan blade has oppositely arranged first and second ends, the first end is arranged on the side of the second end close to the inlet end; and the first end is flush with the inlet end, or the inlet end is arranged protruding from the first end. The technical scheme provided by the application can solve the technical problem of reduced air volume when the heat exchanger is used in the air conditioner indoor unit in the prior art.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioner indoor units, in particular to a wind guide assembly and an air conditioner indoor unit. BACKGROUND

[0002] At present, in the prior art, a domestic air conditioner indoor unit usually sets an axial flow fan for air outlet, and the air conditioner indoor unit adopting the axial flow fan generally adopts the combination of the axial flow fan and a guide ring to guide the air flow. The overlapping part of the guide ring and the axial flow fan blade in the axial direction usually accounts for 1 / 3 to 1 / 2 of the length of the guide ring, and the length of the guide ring is the length of the guide ring in the axial direction.

[0003] However, when the air conditioner indoor unit adopts an L-shaped condenser, a double air inlet is usually set, and at this time, the combination of the guide ring and the axial flow fan blade with the overlapping degree of 1 / 3 to 1 / 2 can meet the air volume requirement; due to the limitations of the structure and appearance of the indoor unit, production efficiency and cost, the heat exchanger needs to be used, and due to the changes of the air inlet area and the air inlet flow field, the combination of the guide ring and the axial flow fan blade with the overlapping degree of 1 / 3 to 1 / 2 cannot effectively guide the air flow, and thus the air volume of the whole machine cannot meet the required air volume requirement. SUMMARY

[0004] The main purpose of the present application is to provide a wind guide assembly and an air conditioner indoor unit to solve the technical problem of reduced air volume of the air conditioner indoor unit using the heat exchanger in the prior art.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present application, a wind guide assembly is provided, comprising:

[0006] a guide ring, the guide ring having oppositely arranged inlet and outlet ends, the inlet end surrounding a guide inlet, the outlet end surrounding a guide outlet, the guide ring further having a guide channel in communication with the guide inlet and the guide outlet, and the inlet end being arranged opposite to the heat exchanger;

[0007] a fan blade rotatably arranged in the guide channel, the fan blade being arranged opposite to the heat exchanger; along the extension direction of the guide channel, the fan blade has oppositely arranged first and second ends, and the first end is arranged on the side of the second end close to the inlet end;

[0008] wherein the first end is flush with the inlet end, or the inlet end is arranged protruding from the first end.

[0009] Further, the distance between the inlet end and the first end is S, and 3mm≤S≤5mm.

[0010] Further, the guide ring comprises an inflow section and a flow-through section connected to each other, the inflow section forms the inlet end at one end away from the flow-through section, and the flow-through section forms the outlet end at one end away from the inflow section.

[0011] The flow passage area of the inlet section gradually decreases along the extension direction from the inlet section to the flow passage section.

[0012] Further, the included angle between the inner side wall of the inlet section and the extension direction from the inlet section to the flow passage section is θ, and 120°≤θ≤150°.

[0013] Further, the length of the flow passage section is A and the length of the inlet section is B along the extension direction from the inlet section to the flow passage section.

[0014] 1≤A / B≤3.

[0015] Further, the minimum included angle and the maximum included angle between the inner side wall of the inlet section and the extension direction from the inlet section to the flow passage section are θmin and θmax respectively, the distance between the inlet end and the heat exchanger is L1, the distance between the end of the inlet section close to the flow passage section and the heat exchanger is L2, and the distance between the edge of the flow passage section and the edge of the heat exchanger is L3.

[0016] L1tan(180°-θmax)≤L3≤L2tan(180°-θmin).

[0017] Further, the projection of the heat exchanger on the end face surrounded by the inlet end is located in the inlet end.

[0018] Further, the distance between the projection of the heat exchanger on the end face surrounded by the inlet end and the inlet end is L; 95mm≤L≤115mm.

[0019] Further, the minimum distance between the fan blade and the inner wall of the flow guide ring is C, and 8mm≤C≤10mm.

[0020] Further, the second end is flush with the outlet end, or the outlet end is protrudingly arranged from the second end.

[0021] According to another aspect of the present application, an air conditioner indoor unit is provided, comprising:

[0022] The air guide assembly provided above;

[0023] The heat exchanger is arranged in a spaced manner with the air guide assembly.

[0024] Further, the heat exchanger is in a straight arrangement.

[0025] By means of the technical scheme of the present application, the first end of the fan blade of the air guide assembly and the inlet end of the flow guide ring are flush, which can effectively optimize the airflow entering the flow guide ring, and can concentrate the airflow into the flow guide ring, thereby increasing the airflow into the flow guide ring, and increasing the overall air volume, and solving the technical problem of reducing air volume when using the heat exchanger in the air conditioner indoor unit in the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0026] The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the application, and are incorporated herein by reference. The illustrations are shown in the drawings are provided to explain the present application and are not intended to limit the present application. In the drawings:

[0027] Figure 1 Fig. 1 shows a structural schematic diagram of a wind guide assembly and a heat exchanger according to an embodiment of the present application;

[0028] Figure 2 Fig. 2 shows a structural schematic diagram of a wind guide assembly according to an embodiment of the present application from one perspective;

[0029] Figure 3 Fig. 3 shows a structural schematic diagram of a wind guide assembly and a heat exchanger according to an embodiment of the present application, which employs a plurality of axial flow fan systems;

[0030] Figure 4 Fig. 4 shows a schematic diagram of an included angle between an inner side wall of an inlet section and an extension direction of the inlet section to a flow passage section according to an embodiment of the present application;

[0031] Figure 5 Fig. 5 shows a schematic diagram of a speed size at different positions of a wind guide assembly according to an embodiment of the present application.

[0032] In the above drawings, the following reference signs are used:

[0033] 10, flow guide ring; 11, inlet section; 111, inlet end; 12, flow passage section; 121, outlet end;

[0034] 20, heat exchanger;

[0035] 30, fan blade; 31, first end; 32, second end. DETAILED DESCRIPTION

[0036] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0037] Reference will now be made to Figures 1 to 5In the first embodiment of the present application, a guide air assembly is provided, which comprises a guide ring 10 and a fan blade 30. The guide ring 10 has an inlet end 111 and an outlet end 121 oppositely arranged, the inlet end 111 surrounds a guide inlet, the outlet end 121 surrounds a guide outlet, the guide ring 10 further has a guide channel communicated with the guide inlet and the guide outlet, and the inlet end 111 is arranged opposite to a heat exchanger 20. The fan blade 30 is rotatably arranged in the guide channel, and the fan blade 30 is arranged opposite to the heat exchanger 20. Along the extension direction of the guide channel, the fan blade 30 has a first end 31 and a second end 32 oppositely arranged, and the first end 31 is arranged on the side of the second end 32 close to the inlet end 111. The first end 31 is flush with the inlet end 111, or the inlet end 111 protrudes from the first end 31.

[0038] With such an arrangement, the guide air assembly in the present embodiment is suitable for air conditioning adjusting equipment. When the air conditioning adjusting equipment uses the heat exchanger 20, only a single air inlet corresponding to the heat exchanger 20 is usually arranged on the shell, and therefore the air conditioning indoor unit using the heat exchanger 20 lacks the side air inlet of the air conditioning indoor unit using the L-shaped evaporator, and the air flow cannot enter the guide ring from the side. By making the first end 31 of the fan blade 30 flush with or slightly lower than the inlet end 111 of the guide ring 10 so that the fan blade 30 is arranged as completely as possible within the range of the guide ring 10, the air flow can be introduced into the range of the guide ring 10 by the fan blade 30 as soon as the air flow reaches the guide ring 10, and at the same time, the situation that the air flow escapes from the guide inlet of the guide ring 10 due to the air flow being rolled by the fan blade 30 can be avoided, and the situation that the air flow is rolled by the fan blade 30 and escapes from the guide inlet of the guide ring 10 can be avoided, and the air flow entering the guide ring 10 can be effectively increased, and therefore the air volume of the air conditioning indoor unit can be effectively increased. Therefore, the guide air assembly provided in the present embodiment can solve the technical problem of the reduced air volume of the air conditioning indoor unit using the heat exchanger 20 in the prior art.

[0039] It should be noted that the heat exchanger 20 is mainly a straight-through evaporator, and the straight-through evaporator generally refers to a plate heat exchanger extending along a predetermined direction. In the present embodiment, the heat exchanger 20 is used, and the heat exchanger 20 is arranged at the air inlet of the air conditioning adjusting equipment when installed, and the extension direction of the heat exchanger 20 is usually perpendicular to the air inlet direction to increase the heat exchange area. When the guide air assembly in the present embodiment is used, the air flow is moved in the direction of the guide ring 10 under the action of the fan blade 30 after the heat exchange of the heat exchanger 20. In addition, in the present embodiment, when the first end 31 of the fan blade 30 is flush with the inlet end 111 of the guide ring 10, the coincidence degree of the fan blade 30 and the guide ring 10 can be defined as 1, and when the inlet end 111 of the guide ring 10 is located at the half of the axial length of the fan blade 30, the coincidence degree of the fan blade 30 and the guide ring 10 can be defined as 1 / 2.

[0040] Specifically, the distance between the inlet end 111 and the first end 31 is S, and 3mm≤S≤5mm. With such an arrangement, when the first end 31 of the fan blade 30 is arranged lower than the inlet end 111, if the distance between the inlet end 111 and the first end 31 is too large, the fan blade 30 will continuously stir the airflow and form turbulence at the gap when rotating, and setting the distance between the inlet end 111 and the first end 31 to 3mm≤S≤5mm can reduce the possibility of forming turbulence inside the flow guide ring 10, can avoid the situation that the air inlet guide is affected due to the too large gap between the inlet end 111 and the first end 31, and can effectively ensure the cooperation effect of the flow guide ring 10 and the fan blade 30.

[0041] In the present embodiment, the flow guide ring 10 includes the inflow section 11 and the flow-through section 12 connected to each other, the end of the inflow section 11 away from the flow-through section 12 forms the inlet end 111, and the end of the flow-through section 12 away from the inflow section 11 forms the outlet end 121. Among them, along the extension direction of the inflow section 11 to the flow-through section 12, the flow-through area of the inflow section 11 gradually decreases. With such an arrangement, the inflow section 11 at the inlet end 111 of the flow guide ring 10 can form a funnel-like shape, and the airflow at the inlet end 111 can be further guided through such an inflow section 11, and the airflow outside the inlet end 111 can be better concentrated to the inlet end 111, so as to better guide the airflow outside to the inside of the flow guide ring 10, and effectively ensure the air inlet amount.

[0042] Specifically, the angle between the inner side wall of the inflow section 11 and the extension direction of the inflow section 11 to the flow-through section 12 is θ, and 120°≤θ≤150°. With such an arrangement, the angle between the inner side wall of the inflow section 11 and the inflow section 11 is set to 120° to 150°, when the angle is too small, the inner side wall of the inflow section 11 will extend too much in the direction perpendicular to the airflow direction, in this case the airflow will hit the inner side wall of the inflow section 11, on the one hand it will hinder the airflow into the flow guide ring 10, on the other hand it will also form turbulence at the inner side wall of the inflow section 11 and disturb the airflow; when the angle is too large, the inner side wall of the inflow section 11 will approach the extension direction of the flow-through section 12, at this time the flow-through section 12 and the inflow section 11 will approximately form a straight section, at this time the inflow section 11 will lose the flow collection effect. Therefore, setting the angle in the above range can avoid the effect of too large angle not playing a guiding role and too small angle hindering the airflow, and can effectively guide the airflow through the setting of the angle, thereby further improving the efficiency and flow of the airflow introduced into the flow guide ring 10.

[0043] In the embodiment, the length of the flow passage section 12 is A and the length of the inflow section 11 is B along the extension direction from the inflow section 11 to the flow passage section 12. Wherein, 1≤A / B≤3. With such a setting, since the total length of the flow guide ring 10 is determined according to the actual internal space of the air conditioning regulating equipment, the total length of the flow guide ring 10 in different air conditioning regulating equipment is also fixed accordingly, and the flow passage area of the inflow section 11 gradually decreases along the extension direction from the inflow section 11 to the flow passage section 12 and plays a flow guiding role of converging airflow; if the ratio of the length A of the flow passage section 12 to the length B of the inflow section 11 is too large, it means that the length of the inflow section 11 is too small, at this time, the guiding and converging effect of the inflow section 11 on the airflow will be reduced, and the inflow section 11 cannot effectively play the flow guiding effect, and even cannot play the flow guiding effect; and when the ratio of the length A of the flow passage section 12 to the length B of the inflow section 11 is too small, since the flow passage area of the inflow section 11 gradually decreases along the extension direction from the inflow section 11 to the flow passage section 12, and the total length of the flow guide ring 10 is fixed, the flow passage area of the flow passage section 12 away from the inlet end 111 side will also decrease with the gradual decrease of the flow passage area of the inflow section 11, which will lead to the decrease of the fluid flow through the flow passage section 12 to the outlet end 121, and further will reduce the air output. Therefore, such a setting can further ensure that the airflow is effectively introduced into the flow guide ring 10, can strengthen the air inlet effect of the flow guide ring 10, and at the same time can also ensure a sufficient air output to a certain extent.

[0044] Specifically, the minimum angle and the maximum angle between the inner side wall of the inflow section 11 and the extension direction from the inflow section 11 to the flow passage section 12 in the embodiment are θmin and θmax respectively, the distance between the inlet end 111 and the heat exchanger 20 is L1, the distance between the end of the inflow section 11 close to the flow passage section 12 and the heat exchanger 20 is L2, and the distance between the edge of the flow passage section 12 and the edge of the heat exchanger 20 is L3. Wherein, L1tan(180°-θmax)≤L3≤L2tan(180°-θmin). With such a structural setting, the heat exchanger 20 can be conveniently limited within the air guiding range of the air guiding assembly, avoiding the situation that too much air of the air guiding assembly exceeds the setting position of the heat exchanger and leads to invalid air output, so as to effectively ensure the air guiding effect and avoid invalid air output.

[0045] Specifically, the projection of the heat exchanger 20 on the end face surrounded by the inlet end 111 is located in the inlet end 111. With such a setting, the heat exchanger 20 can be arranged within the opening range of the inlet end 111, which can ensure that the airflow passing through the heat exchanger 20 is introduced into the inflow section 11 as much as possible, so as to further improve the airflow flow entering the flow guide ring 10.

[0046] In the embodiment, the distance between the projection of the heat exchanger 20 on the end face surrounded by the inlet end 111 and the inlet end 111 is L; 95mm≤L≤115mm. With such an arrangement, in order to facilitate the installation and subsequent maintenance of the heat exchanger 20, the flow guide ring 10 and the fan blade 30 inside the air conditioning regulating device, a sufficient distance needs to be left between the heat exchanger 20 and the flow guide ring 10, so as to avoid the problem that the internal structure of the air conditioner indoor unit is too compact to affect assembly; and when L is too large, the fluid flowing through the heat exchanger 20 will spread in the space between the heat exchanger 20 and the flow guide ring 10, which will cause a large amount of gas to be unable to enter the flow guide ring 10. With the L value range in the embodiment, the installation of the heat exchanger 20 and the flow guide ring 10 can be avoided, and at the same time, the gas flow into the flow guide ring 10 can be smoother, and the generation of backflow can be reduced.

[0047] Specifically, the minimum distance between the fan blade 30 and the inner wall of the flow guide ring 10 is C, and 8mm≤C≤10mm. In order to ensure the normal assembly of the fan blade 30 and the flow guide ring 10 and ensure the normal rotation of the fan blade 30, a certain gap needs to be left between the fan blade 30 and the inner wall of the flow guide ring 10, and when the gap is too large, air leakage will occur at the gap. With such an arrangement, by limiting the gap between the fan blade 30 and the flow guide ring 10 within a certain range, the normal cooperation between the fan blade 30 and the flow guide ring 10 can be ensured, and at the same time, the gap between the fan blade 30 and the flow guide ring 10 can be as small as possible to reduce air leakage, and the air volume can be further improved.

[0048] In the embodiment, when a conventional flow guide ring with a coincidence degree of 2 / 3 is combined with a fan blade, the simulated air volume is 1510m 3 / h, the measured air volume value is 1460m 3 / h, and the tested noise value is 53.6dB; when the flow guide ring 10 and the fan blade 30 are completely coincident and the flow guide ring inlet angle is equal to 130°, the simulated air volume is 1890m 3 / h, the measured air volume value is 1853m 3 / h, and the tested noise value is 53.5dB, the air volume is increased by 393m 3 / h compared with the conventional flow guide ring and fan blade combination scheme, the air volume and fan efficiency are increased by 26.9%, there is a large improvement space, and the noise value is also reduced by 0.1dB. It should be noted that the air guide assembly in the embodiment is also applicable to a plurality of axial flow fan systems or other axial flow fan systems with straight-through heat exchangers. The specific speed size diagram of the air guide assembly in the embodiment is shown in Figure 5 .

[0049] In the embodiment, the second end 32 is flush with the outlet end 121, or the outlet end 121 is arranged protruding from the second end 32. With such an arrangement, the overlapping part of the fan blade 30 and the flow guide ring 10 can be further lifted, and the air flow effect can be improved, and the flow rate when the air flow is blown out can be enhanced through the cooperation of the second end 32 and the outlet end 121.

[0050] In the second embodiment of the present application, an air conditioner indoor unit is provided, which comprises the air guide assembly in the first embodiment and a heat exchanger 20, and the heat exchanger 20 is arranged spaced apart from the air guide assembly.

[0051] Specifically, the heat exchanger 20 in the embodiment is in a straight-through structure, and the straight-through structure extends along a preset direction. Specifically, the inner side wall of the inflow section 11 is arranged inclined along the preset direction, and the included angle between the inner side wall of the inflow section 11 and the heat exchanger 20 can be 65° to 75°, including 65° and 75°. The heat exchanger 20 can be an evaporator.

[0052] From the above description, it can be seen that the above-mentioned embodiments of the present application achieve the following technical effects: when the air conditioner indoor unit uses the heat exchanger 20, through the cooperation design of the flow guide ring 10 and the fan blade 30, the first end 31 of the fan blade 30 is flush with or slightly lower than the inlet end 111 of the flow guide ring 10, which can effectively collect the air flow, and solves the technical problem of air volume reduction when the air conditioner indoor unit uses the heat exchanger in the prior art. The above-mentioned embodiments of the present application improve the fan efficiency and reduce the air conditioner energy consumption.

[0053] It should be noted that the terms used herein are only intended to describe specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise, and it should also be understood that, when the terms "comprise" and / or "include" are used in the specification, there is a presence of the features, steps, operations, devices, components and / or combinations thereof.

[0054] The foregoing description, for purposes of clarity, describes the relative positioning, numeric expressions, and values of the components and steps set forth in the embodiments in terms of their orientation with the application. It will be recognized that the dimensions of the various parts illustrated in the drawings are not necessarily drawn to scale and that, for the purposes of convenience and clarity only, specific spatial orientations are used in the description herein. The techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered as if they were discussed herein in their broadest form. In all examples shown and discussed herein, any specific values should be interpreted as merely illustrative and not as a limitation on the scope of the exemplary embodiments. Thus, other examples of the exemplary embodiments can have different values. It is to be noted that like reference numerals and letters refer to like items in the drawings and, as such, once an item is defined in one drawing, it is not necessary to discuss it further in subsequent drawings.

[0055] In the description of the present application, it is to be understood that the orientation or positional relationships indicated by terms such as "front", "back", "up", "down", "left", "right", "horizontal", "vertical", "top", "bottom", and the like are generally based on the orientation or positional relationships shown in the drawings, and are merely used for the purpose of convenience and simplification of the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be construed as limiting the scope of the present application. The orientation terms "inner", "outer" refer to the inner and outer relative to the contour of the components themselves.

[0056] For the purpose of convenience and brevity, spatially relative terms, such as "on", "above", "top", "up", "down", "bottom", and the like, can be used herein for describing the spatial relationship between one device or feature to another device or feature as shown in the drawings. It should be understood that the spatially relative terms are intended to encompass different orientations of the devices in their use or operation in addition to the orientations depicted in the drawings. For example, if a device shown in the drawings is inverted, then a device described as "above" or "on" other devices or structures can be positioned "below" or "on" the other devices or structures. Thus, the exemplary term "above" can include both the above and below orientations. The devices can also be oriented in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly. In addition, it is to be understood that the use of the singular herein, such as the use of "the item" to describe the singular instance of the item, is only intended to illustrate the properties of the specific item and is not intended to limit the scope of the present application. Thus, the singular form "a", "an", and "the" include plural references unless the context clearly dictates otherwise.

[0057] In addition, it should be noted that the use of the terms "first", "second", and the like, to describe various components, do not necessarily indicate any special significance or function of the components, and are merely used to distinguish the components from one another, unless otherwise stated. Thus, the terms should not be construed as limiting the scope of the present application.

[0058] The above merely provides the preferred embodiments of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the principles and technical scope of the present application shall fall into the scope of the present application.

Claims

1. An air deflector assembly comprising: The application relates to a wind guide assembly. The wind guide assembly comprises: a wind guide ring (10) having oppositely arranged inlet and outlet ends (111) and (121), the inlet end (111) surrounding a wind guide inlet, the outlet end (121) surrounding a wind guide outlet, and the wind guide ring (10) further having a wind guide channel in communication with the wind guide inlet and the wind guide outlet, the inlet end (111) being arranged opposite a heat exchanger (20); a fan blade (30) rotatably arranged in the wind guide channel, the fan blade (30) being arranged opposite the heat exchanger (20); along the extension direction of the wind guide channel, the fan blade (30) has oppositely arranged first and second ends (31) and (32), the first end (31) being arranged on the side of the second end (32) close to the inlet end (111); wherein the first end (31) is flush with the inlet end (111), or the inlet end (111) is arranged protruding from the first end (31); the wind guide ring (10) comprises an inflow section (11) and a flow-through section (12) connected to each other, the inflow section (11) being formed at one end away from the flow-through section (12) to form the inlet end (111), and the flow-through section (12) being formed at one end away from the inflow section (11) to form the outlet end (121); wherein along the extension direction of the inflow section (11) to the flow-through section (12), the flow-through area of the inflow section (11) gradually decreases; the minimum and maximum included angles between the inner side wall of the inflow section (11) and the extension direction of the inflow section (11) to the flow-through section (12) are θmin and θmax, respectively, the distance between the inlet end (111) and the heat exchanger (20) is L1, the spacing between the end of the inflow section (11) close to the flow-through section (12) and the heat exchanger (20) is L2, and the spacing between the edge of the flow-through section (12) and the edge of the heat exchanger (20) is L3; wherein L1 tan (180°-θmax)≤L3≤L2 tan (180°-θmin); 2. The air deflector assembly of claim 1, wherein, the heat exchanger (20) is in a straight arrangement. the spacing between the inlet end (111) and the first end (31) is S, and 3mm≤S≤5mm.

3. The wind guide assembly according to claim 1, wherein the included angle between the inner side wall of the inflow section (11) and the extension direction of the inflow section (11) to the flow-through section (12) is θ, and 120°≤θ≤150°; and / or along the extension direction of the inflow section (11) to the flow-through section (12), the length of the flow-through section (12) is A, and the length of the inflow section (11) is B; 4. The air deflector assembly of claim 1, wherein, wherein 1≤A / B≤3.

5. The air deflector assembly of claim 4, wherein, the projection of the heat exchanger (20) on the end face surrounded by the inlet end (111) is located in the inlet end (111). the distance between the projection of the heat exchanger (20) on the end face surrounded by the inlet end (111) and the inlet end (111) is L; 95mm≤L≤115mm.

6. The air deflector assembly of claim 1, wherein, The minimum distance between the fan blade (30) and the inner wall of the guide ring (10) is C, 8mm≤C≤10mm.

7. The air deflector assembly of any one of claims 1-6, wherein, The second end (32) is flush with the outlet end (121), or the outlet end (121) is arranged protruding from the second end (32).

8. An air conditioner indoor unit characterized by comprising: Comprising: The air guide assembly according to any one of claims 1 to 7; The heat exchanger (20) is arranged spaced apart from the air guide assembly.

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