Embedded air conditioner indoor unit and air conditioner
By arranging noise-improving structures, such as wind-shielding ribs, at the first air outlet of the embedded air conditioner to block the wind beam from blowing to the fin noise generation area, the problem of high noise in small-sized air conditioners is solved and the noise is effectively reduced. .
Patent Information
- Application Number
- CN202420959058.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2034-04-30
AI Technical Summary
The small-size embedded air conditioner internal unit produces a lot of noise during operation. The main reason is that the distance between the fan component and the heat exchanger is small, which leads to the formation of a fin noise generation area and the sound of the wind beam blowing the fin is louder.
The first air outlet of the built-in air conditioner is provided with a noise improvement structure, such as a wind-shielding rib, to block the wind beam from blowing to the fin noise generation area formed on the heat exchanger, thereby reducing the sound of the wind beam blowing the fins.
By blocking the wind beam from blowing to the fin noise generating area, the noise generated during the operation of the embedded air conditioner is reduced. The specific effect is that the noise is reduced by approximately 2db.
Smart Images
Figure CN222378411U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to air conditioning equipment technology, and more specifically, to an embedded air conditioning indoor unit and an air conditioner. Background Art
[0002] Although embedded air conditioner indoor units (such as kitchen air conditioners) will generate certain noise during operation, the smaller the size of the embedded air conditioner indoor unit is designed, the greater the noise generated during operation. Therefore, how to better reduce the noise generated by the small-sized embedded air conditioner indoor unit during operation is a technical problem that technicians in this field need to solve urgently. Utility Model Content
[0003] Analysis and research found that the smaller the size of the embedded air-conditioning indoor unit, the smaller the distance between the air outlet of the fan assembly and the heat exchanger. During the operation of the fan assembly, a fin noise generating area will be formed on the heat exchanger (at a certain position or even certain positions). The fin noise generating area will produce the sound of wind beam blowing the fins during the operation of the fan assembly. This is also the main reason why the small-sized embedded air-conditioning indoor unit generates more noise during operation.
[0004] The embodiment of the utility model provides an embedded air conditioner indoor unit, which generates less noise during operation.
[0005] The embodiment of the utility model also provides an air conditioner.
[0006] The embedded air-conditioning indoor unit provided by the embodiment of the utility model comprises: a main body, which has a first air duct and a second air duct inside; a heat exchanger, which is arranged in the first air duct; and a fan assembly, whose first air outlet is connected to the first air duct, and the second air outlet is connected to the second air duct, and is arranged to form a wind beam flowing from the second air duct to the first air duct through the fan assembly; wherein the first air outlet is provided with a noise improvement structure, and the noise improvement structure is arranged to block the wind beam from blowing toward the fin noise generating area formed on the heat exchanger during the operation of the fan assembly, so as to improve the sound of the wind beam blowing the fins generated in the fin noise generating area during the operation of the fan assembly.
[0007] In some exemplary embodiments, the noise improvement structure is a wind shielding rib, and the wind shielding rib is fixed in the first air outlet.
[0008] In some exemplary embodiments, the wind-shielding rib is a straight rib or a curved rib, the axial width of the wind-shielding rib in the fan assembly is not less than 6 mm, and the distance between the end wall of the first air outlet in the axial direction of the fan assembly and the wind-shielding rib is not less than 15 mm.
[0009] In some exemplary embodiments, the first air outlet is further provided with an air guiding structure, and the air guiding structure is configured to guide the wind beam to blow toward different positions of the heat exchanger on a side facing the first air outlet.
[0010] In some exemplary embodiments, the axis of the fan assembly is arranged horizontally, the first air outlet is arranged obliquely upward from one end adjacent to the heat exchanger to one end away from the heat exchanger, and the air guide structure includes an air guide plate, and the air guide plate is arranged obliquely upward from one end adjacent to the heat exchanger to one end away from the heat exchanger.
[0011] In some exemplary embodiments, the air guide plates include N air guide plates spaced apart from each other, N≥2, and the inclination angle of the i-th air guide plate from top to bottom relative to the horizontal plane is K i , i is a positive integer ranging from 1 to N, the inclination angle of the lower wall of the first air outlet relative to the horizontal plane is M, A1 is the width of the first air outlet adjacent to one end of the heat exchanger; in the up and down direction:
[0012] The vertical distance between the lower end of the first air guide plate and the upper wall of the first air outlet is B1=A1 / [(N+1)*Sin(90°-K i )], the width of the first wind deflector C1 = B1 / Sin(K i ), at this time i=1;
[0013] The vertical distance B between the lower end of the i-th wind guide plate and the lower end of the i-1-th wind guide plate i =A1 / [(N+1)*Sin(90°-K i )], the width C of the i-th air guide plate i =B i / Sin(K i ), at this time i≠1;
[0014] The vertical distance B between the lower end of the last air guide plate and the lower wall of the first air outlet 末 =A1 / [(N+1)*Sin(90°-M)].
[0015] In some exemplary embodiments, the noise improvement structure includes a plurality of noise improvement structures, and the plurality of noise improvement structures are separated by the wind guide structure.
[0016] In some exemplary embodiments, the first air outlet is further provided with a reinforcement structure, and the reinforcement structure is configured to enhance the structural strength of the air guide structure.
[0017] In some exemplary embodiments, the reinforcement structure is a reinforcing rib plate, which is vertically arranged along the air outlet direction of the first air outlet, and the axial thickness of the reinforcing rib plate in the fan assembly is not less than 2 mm.
[0018] In some exemplary embodiments, the fan assembly includes: a volute body, located in the second air duct and having the second air outlet and the third air outlet; an air outlet frame having the first air outlet, located in the first air duct and arranged at the third air outlet; a wind wheel, arranged in the volute body; and a motor, connected to the wind wheel and configured to drive the wind wheel to rotate.
[0019] In some exemplary embodiments, the volute body includes a first shell and a second shell, the first shell and the second shell are assembled together and enclose the second air outlet, the fan assembly also includes a partition, the partition is located in the main body and divides the interior of the main body into the first air duct and the second air duct, the second shell and the partition are an integral structure, and the third air outlet is located between the partition and the second shell.
[0020] The air conditioner provided in the embodiment of the utility model includes the embedded air conditioner indoor unit described in any one of the above embodiments.
[0021] The embedded air conditioner indoor unit provided by the embodiment of the utility model has a first air outlet provided with a noise improvement structure. During the operation of the fan assembly, the noise improvement structure blocks the wind beam from blowing toward the fin noise generating area, thereby reducing or even eliminating the sound of the wind beam generated in the fin noise generating area blowing the fins. Therefore, this scheme generates less noise during the operation of the embedded air conditioner indoor unit.
[0022] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained through the structures particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] The accompanying drawings are used to provide a further understanding of the technical solution of the utility model and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the utility model and do not constitute a limitation on the technical solution of the utility model.
[0024] Figure 1 This is a schematic diagram of a main structural cross-section of an embedded air conditioner indoor unit provided in some embodiments of the present application, wherein arrows indicate the flow direction of air beams;
[0025] Figure 2 for Figure 1 Schematic diagram of the exploded structure of the middle volute body;
[0026] Figure 3 for Figure 2 Schematic diagram of the three-dimensional structure of the middle air outlet frame;
[0027] Figure 4 for Figure 3 The main structural diagram of the air outlet frame is shown;
[0028] Figure 5 for Figure 1 The main structural cross-sectional diagram of the embedded air conditioner indoor unit shown;
[0029] Figure 6 for Figure 1 The schematic diagram of the top structural cross-section of the embedded air conditioner indoor unit is shown.
[0030] The corresponding relationship between the reference numerals and the component names is as follows:
[0031] 100 main body, 110 first air duct, 120 second air duct, 200 heat exchanger, 300 fan assembly, 310 first air outlet, 311 noise improvement structure, 312 air guide structure, 313 reinforcement structure, 320 first shell, 330 second shell, 331 third air outlet, 340 wind wheel, 350 second air outlet, 360 air outlet frame, 361 mounting plate, 400 partition. DETAILED DESCRIPTION
[0032] In order to make the purpose, technical solution and advantages of the utility model more clear, the embodiments of the utility model will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other arbitrarily without conflict.
[0033] The embedded air conditioner provided in the embodiment of the utility model is as follows: Figures 1 to 6 As shown, it includes: a main body 100, the interior of the main body 100 is provided with a first air duct 110 and a second air duct 120; a heat exchanger 200, the heat exchanger 200 is arranged in the first air duct 110; and a fan assembly 300, the first air outlet 310 of the fan assembly 300 is connected to the first air duct 110, the second air outlet 350 of the fan assembly 300 is connected to the second air duct 120, and the fan assembly 300 is arranged to form a wind beam flowing from the second air duct 120 to the first air duct 110 through the fan assembly 300; wherein the first air outlet 310 is provided with a noise improvement structure 311, and the noise improvement structure 311 is arranged to block the wind beam from blowing to the fin noise generating area formed on the heat exchanger 200 during the operation of the fan assembly 300, so as to improve the sound of the wind beam blowing the fins generated in the fin noise generating area during the operation of the fan assembly 300.
[0034] The first air outlet 310 of the embedded air conditioner is provided with a noise improvement structure 311. During the operation of the fan assembly 300, the noise improvement structure 311 blocks the wind beam from blowing toward the fin noise generating area, thereby reducing or even eliminating the sound of the wind beam blowing the fin generated in the fin noise generating area. Therefore, the noise generated during the operation of the embedded air conditioner in this solution is smaller. The first air outlet 310 is set as an air outlet, and the second air outlet 350 is set as an air inlet.
[0035] In some examples, such as Figures 1 to 4 As shown, the noise improvement structure 311 is a wind shield, which is fixed in the first air outlet 310 and arranged opposite to the fin noise generating area. The wind shield blocks the wind beam blown from the first air outlet 310 to the fin noise generating area, so that the wind volume and wind speed of the wind beam blown to the fin noise generating area are reduced, so that the fin noise generating area is less likely to generate the sound of the wind beam blowing the fins during the operation of the fan assembly 300, so the noise generated during the operation of the embedded air conditioner is smaller. Among them, the distance J between the end wall of the first air outlet 310 in the axial direction of the fan assembly 300 and the wind shield is generally not less than 15mm.
[0036] The wind-shielding ribs may be straight ribs, or the wind-shielding ribs may be curved ribs, and the curved ribs may be arc-shaped ribs or folded ribs, etc. All of the above may achieve the purpose of the present application, and their purpose does not deviate from the design concept of the present utility model, and will not be elaborated here, and all shall fall within the protection scope of the present application.
[0037] In some embodiments, Figure 4 As shown, the axial width K of the wind shield rib in the fan assembly 300 is not less than 6mm, so that the wind shield rib has a better blocking effect on the wind beam blown from the first air outlet 310 to the fin noise generating area, and the fin noise generating area is less likely to produce the sound of the wind beam blowing the fins during the operation of the fan assembly 300. It can be that the axial width of the wind shield rib in the fan assembly 300 is set to 6mm; or it can be that the axial width of the wind shield rib in the fan assembly 300 is set to 7mm; or it can be that the axial width of the wind shield rib in the fan assembly 300 is set to 8mm, etc.; all of the above can achieve the purpose of this application, and its purpose does not deviate from the design concept of the utility model, and will not be repeated here, and should all belong to the protection scope of this application.
[0038] Under the same air output, the noise generated by the embedded air conditioner indoor unit provided in the present application is reduced by approximately 2db.
[0039] In some exemplary embodiments, Figures 2 to 4As shown, the first air outlet 310 is also provided with an air guide structure 312, which is configured to guide the wind beam to blow toward different positions of the heat exchanger 200 on a side facing the first air outlet 310, so as to better achieve better heat exchange performance at different positions on the heat exchanger 200.
[0040] In some examples, such as Figure 1 As shown, the axis of the fan assembly 300 is arranged horizontally, the first air outlet 310 is arranged obliquely upward from one end adjacent to the heat exchanger 200 to one end away from the heat exchanger 200, the long side of the first air outlet 310 at one end adjacent to the heat exchanger 200 is arranged horizontally, and the wide side is arranged obliquely from bottom to top toward the side where the heat exchanger 200 is located, the air guide structure 312 includes an air guide plate, and the air guide plate is arranged obliquely upward from one end adjacent to the heat exchanger 200 to one end away from the heat exchanger 200, and the heat exchanger 200 is arranged obliquely from top to bottom toward the side where the fan assembly 300 is located.
[0041] It can be, for example Figure 2 and Figure 3 As shown, the air guide plate is set as a straight plate; or it can be that the air guide plate is set as a curved plate, and the curved plate can be an arc-shaped plate or a folded plate, etc.; all of the above can achieve the purpose of this application, and its purpose does not deviate from the design concept of the utility model, and will not be repeated here, and should all fall within the protection scope of this application.
[0042] Among them, Figures 2 to 4 As shown, the wind shielding ribs include a plurality of wind shielding ribs, which are sequentially arranged in the vertical direction and separated in the vertical direction by wind guide plates. The wind guide plates are connected to the wind shielding ribs adjacent to the wind shielding ribs above and below, the upper end of the wind shielding rib located at the top is connected to the upper wall of the first air outlet 310, and the lower end of the wind shielding rib located at the bottom is connected to the lower wall of the first air outlet 310, so that the structural strength of the wind shielding ribs is higher.
[0043] It can be that the wind shield is provided as one and the wind ribs are provided as two; or it can be that Figures 2 to 4 As shown, if two wind shields are provided, then three wind shield ribs are provided; or it may be that three wind shields are provided, then four wind shield ribs are provided, and so on; all of the above can achieve the purpose of this application, and its purpose does not deviate from the design idea of the utility model, and will not be repeated here, and should all fall within the protection scope of this application.
[0044] In some embodiments, Figures 2 to 5 As shown, the air guide plates include N air guide plates arranged at intervals in the upper and lower parts, N ≥ 2, and the inclination angle of the i-th air guide plate from the top to the bottom relative to the horizontal plane is K i , i is a positive integer ranging from 1 to N, the inclination angle of the lower wall of the first air outlet 310 relative to the horizontal plane is M, and A1 is the width of the first air outlet 310 adjacent to the heat exchanger 200. In the up and down direction:
[0045] The vertical distance between the lower end of the first air guide plate and the upper wall of the first air outlet 310 is B1=A1 / [(N+1)*Sin(90°-K i )], the width of the first air guide plate C1=B1 / Sin(K i ), at this time i=1;
[0046] The vertical distance B between the lower end of the i-th air guide plate and the lower end of the i-1-th air guide plate i =A1 / [(N+1)*Sin(90°-K i )], the width C of the i-th air guide plate i =B i / Sin(K i ), at this time i = 2 ~ N;
[0047] The vertical distance B between the lower end of the last air guide plate and the lower wall of the first air outlet 310 is 末 =A1 / [(N+1)*Sin(90°-M)].
[0048] Yes, B1 is set to 30mm~70mm, C1 is set to 10mm~40mm. Yes, B i Set to 30mm~70mm, C i Set to 10mm~40mm; if N is 2, then B i Including B2, C i Including C2; if N is 3, then B i Including B2 and B3, C i Including C2 and C3; if N is 3, then B i Including B2, B3 and B4, C i Includes C2, C3 and C4; can be, B 末 The shortest distance C3 between adjacent air guide plates may be set to be equal to C1.
[0049] In one embodiment, if Figure 5 As shown, N=2, then K1=K2≈M≈A, or K1+A=90°, where A is the inclination angle of the heat exchanger 200 relative to the horizontal plane.
[0050] In some exemplary embodiments, Figures 2 to 4 As shown, the first air outlet 310 is further provided with a reinforcement structure 313, and the reinforcement structure 313 is configured to enhance the structural strength of the air guide structure 312, so that the air guide structure 312 is less likely to be damaged during transportation and use.
[0051] In some examples, such as Figures 2 to 4As shown, the reinforcing structure 313 is a reinforcing rib plate, which is arranged vertically along the air outlet direction of the first air outlet 310, and the axial thickness Q of the reinforcing rib plate in the fan assembly 300 is not less than 2 mm, so that the reinforcing rib plate can better improve the structural strength of the air guide plate.
[0052] Among them, Figures 2 to 4 As shown, the reinforcing rib plates include a plurality of reinforcing rib plates arranged in sequence in the upper and lower directions and separated in the upper and lower directions by air guide plates. The air guide plates are connected to the upper and lower adjacent reinforcing rib plates. The upper end of the uppermost reinforcing rib plate is connected to the upper wall of the first air outlet 310, and the lower end of the lowermost reinforcing rib plate is connected to the lower wall of the first air outlet 310.
[0053] It can be that the windshield is provided as one and the reinforcing ribs are provided as two; or it can be that Figures 2 to 4 As shown, if two wind shields are provided, then three reinforcing ribs are provided; or it may be that three wind shields are provided, then four reinforcing ribs are provided, and so on; all of the above can achieve the purpose of the present application, and its purpose does not deviate from the design concept of the present utility model, and will not be repeated here, and should all fall within the protection scope of the present application.
[0054] In some exemplary embodiments, Figures 1 to 6 As shown, the fan assembly 300 includes: a volute body, the volute body is located in the second air duct 120 and has a second air port 350 and a third air port 331, the second air port 350 is located on the end wall of the volute body, and the third air port 331 is located on the peripheral wall of the volute body; an air outlet frame 360 having a first air port 310, the air outlet frame 360 is located in the first air duct 110 and is arranged at the third air port 331; a wind wheel 340 (such as Figure 6 As shown), the wind wheel 340 is arranged in the volute body; and the motor (as shown Figure 6 As shown), the motor is located outside the volute body and connected to the wind wheel 340, and the motor is configured to drive the wind wheel 340 to rotate.
[0055] In some examples, such as Figure 2 As shown, the volute body includes a first shell 320 located at the bottom and a second shell 330 located at the top. The first shell 320 and the second shell 330 are assembled together and enclose a second air outlet 350. The fan assembly 300 also includes a partition 400. The partition 400 is located in the main body 100 and divides the interior of the main body 100 into a first air duct 110 and a second air duct 120. The second shell 330 and the partition 400 are an integrated structure, and the third air outlet 331 is located at the partition 400 and the second shell 330. Compared with the technical solution in which the second shell 330 and the partition 400 are split structures, this solution can effectively improve the assembly efficiency of the fan assembly 300.
[0056] Among them, Figure 4and Figure 6 As shown, in the axial direction of the volute body (i.e., the axial direction of the wind wheel 340), mounting plates 361 are provided at both ends of the air outlet frame 360, and the mounting plates 361 are placed on the partition 400 outside the third air outlet 331 and fixedly connected with the partition 400. In the axial direction of the volute body: the width of the mounting plate 361 is Y, the length of the wind wheel 340 is G, the length L of the air outlet frame 360 is set to G+(10-20) mm, and the length M of the volute body is set to G+(120-150) mm. Preferably, G can be set to 160 mm to 220 mm, and the distance P between the reinforcing rib plate and the frame edge of the air outlet frame 360 in the axial direction of the volute body is set to 40 mm to 70 mm.
[0057] When the size of L is relatively large, multiple groups of reinforcing ribs (not shown in the diagram) can be arranged in the first air outlet 310 along the axial direction of the volute body, and the distance between adjacent groups of reinforcing ribs is set to 60 mm to 100 mm, so that the structural strength of the air guide plate is higher. Figure 6 As shown, in the axial direction of the volute body, the distance between one end of the heat exchanger 200 and the wall of the third air port 331 on the second shell 330 is E, and the distance between the other end of the heat exchanger 200 and the wall of the third air port 331 on the second shell 330 is F. When E≠F, the sound of the wind beam blowing the fins generated in the fin noise generating area during the operation of the fan assembly 300 is louder. Therefore, it is preferred that E=F. H is the axial length of the heat exchanger 200 in the volute body.
[0058] The air conditioner (not shown in the figure) proposed in the embodiment of the utility model includes an air conditioner outdoor unit and the embedded air conditioner indoor unit described in any of the above embodiments, and the air conditioner outdoor unit is used in conjunction with the embedded air conditioner indoor unit.
[0059] This air conditioner has all the advantages of the embedded air conditioner indoor unit provided by any of the above embodiments, which will not be described in detail here.
[0060] In one embodiment, the air conditioner is configured as a kitchen air conditioner.
[0061] In summary, the embedded air conditioner provided by the embodiment of the utility model has a noise improvement structure at the first air outlet. During the operation of the fan assembly, the noise improvement structure blocks the wind beam from blowing toward the fin noise generating area, thereby reducing or even eliminating the sound of the wind beam blowing the fin generated in the fin noise generating area. Therefore, the noise generated during the operation of the embedded air conditioner in this solution is smaller.
[0062] In the description of the present invention, it should be noted that the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "side", "relative", "four corners", "periphery", "'mouth'-shaped structure" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the structure referred to has a specific orientation, is constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
[0063] In the description of the embodiments of the present utility model, unless otherwise clearly specified and limited, the terms "connection", "direct connection", "indirect connection", "fixed connection", "installation", and "assembly" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; the terms "installation", "connection", and "fixed connection" can be a direct connection, or an indirect connection through an intermediate medium, or the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0064] Although the implementation methods disclosed in the utility model are as above, the above contents are only implementation methods adopted to facilitate the understanding of the utility model, and are not used to limit the utility model. Any technician in the field to which the utility model belongs can make any modifications and changes in the form and details of implementation without departing from the spirit and scope disclosed in the utility model, but the scope of patent protection of the utility model shall still be defined by the attached claims.
Claims
1. A built-in air conditioner indoor unit, characterized in that: include: A main body having a first air duct and a second air duct therein; a heat exchanger, disposed in the first air duct; and A fan assembly, wherein a first air outlet is connected to the first air duct, a second air outlet is connected to the second air duct, and is configured to form a wind beam flowing from the second air duct through the fan assembly to the first air duct; Among them, the first air outlet is provided with a noise improvement structure, and the noise improvement structure is configured to block the wind beam from blowing toward the fin noise generating area formed on the heat exchanger during the operation of the fan assembly, so as to improve the sound of the wind beam blowing the fins generated in the fin noise generating area during the operation of the fan assembly.
2. The embedded air conditioner indoor unit according to claim 1, characterized in that: The noise improvement structure is a wind shielding rib, and the wind shielding rib is fixedly arranged in the first air outlet.
3. The embedded air conditioner indoor unit according to claim 2, characterized in that: The wind shielding rib is a straight rib or a curved rib, and the axial width of the wind shielding rib in the fan assembly is not less than 6 mm, and the distance between the end wall of the first air outlet in the axial direction of the fan assembly and the wind shielding rib is not less than 15 mm.
4. The embedded air conditioner indoor unit according to any one of claims 1 to 3, characterized in that: The first air outlet is further provided with an air guiding structure, and the air guiding structure is configured to guide the wind beam to blow toward different positions of the heat exchanger on a side facing the first air outlet.
5. The embedded air conditioner indoor unit according to claim 4, characterized in that: The axis of the fan assembly is arranged horizontally, the first air outlet is arranged obliquely upward from one end adjacent to the heat exchanger to one end away from the heat exchanger, and the air guide structure includes an air guide plate, which is arranged obliquely upward from one end adjacent to the heat exchanger to one end away from the heat exchanger.
6. The embedded air conditioner indoor unit according to claim 5, characterized in that: The wind deflectors include N wind deflectors spaced apart from each other, N≥2, and the inclination angle of the i-th wind deflector from top to bottom relative to the horizontal plane is K i , i is a positive integer ranging from 1 to N, the inclination angle of the lower wall of the first air outlet relative to the horizontal plane is M, A1 is the width of the first air outlet adjacent to one end of the heat exchanger; in the up and down direction: The vertical distance between the lower end of the first air guide plate and the upper wall of the first air outlet is B1=A1 / [(N+1)*Sin(90°-K i )], the width of the first wind deflector C1 = B1 / Sin(K i ), at this time i=1; The vertical distance B between the lower end of the i-th wind guide plate and the lower end of the i-1-th wind guide plate i =A1 / [(N+1)*Sin(90°-K i )], the width C of the i-th air guide plate i =B i / Sin(K i ), at this time i≠1; The vertical distance B between the lower end of the last air guide plate and the lower wall of the first air outlet 末 =A1 / [(N+1)*Sin(90°-M)].
7. The embedded air conditioner indoor unit according to claim 4, characterized in that: The noise improvement structure includes a plurality of noise improvement structures, and the plurality of noise improvement structures are separated by the wind guide structure.
8. The embedded air conditioner indoor unit according to claim 4, characterized in that: The first air outlet is also provided with a reinforcement structure, and the reinforcement structure is configured to enhance the structural strength of the air guide structure.
9. The embedded air conditioner indoor unit according to claim 8, characterized in that: The reinforcement structure is a reinforcement rib plate, which is vertically arranged along the air outlet direction of the first air outlet, and the thickness of the reinforcement rib plate in the axial direction of the fan assembly is not less than 2 mm.
10. The built-in air conditioner indoor unit according to any one of claims 1 to 3, characterized in that: The fan assembly comprises: A volute body, located in the second air duct and having the second air outlet and the third air outlet; An air outlet frame having the first air outlet is located in the first air duct and is arranged at the third air outlet; A wind wheel is disposed in the volute body; and The motor is connected to the wind wheel and is configured to drive the wind wheel to rotate.
11. The embedded air conditioner indoor unit according to claim 10, characterized in that: The volute body includes a first shell and a second shell, the first shell and the second shell are assembled together and enclose the second air outlet, the fan assembly also includes a partition, the partition is located in the main body and divides the interior of the main body into the first air duct and the second air duct, the second shell and the partition are an integral structure, and the third air outlet is located between the partition and the second shell.
12. An air conditioner, characterized in that: It comprises the embedded air conditioner indoor unit as claimed in any one of claims 1 to 11.