Centrifugal fan and air conditioner

Abstract

The centrifugal fan comprises a centrifugal volute and a centrifugal wind wheel, the centrifugal volute comprises a spiral section and a diffusion section, the peripheral wall of the spiral section is provided with a reference part opposite to a volute tongue in the first direction, and the first direction is the radial direction of the spiral section; wherein the distance between the central axis of the centrifugal wind wheel and the reference part in the first direction is x1, the minimum radial distance between the centrifugal wind wheel and the spiral section is x2, the width of the communication port in the second direction is x3, the width of the air outlet in the second direction is x4, the length of the diffusion section in the first direction is x5, 290 mm < = x1 < = 310 mm, 12 mm < = x2 < = 20 mm, 296 mm < = x3 < = 316 mm, 475 mm < = x4 < = 495 mm, 350 mm < = x5 < = 370 mm, and the distance between the reference part and the spiral section is x1. The second direction is perpendicular to the axial direction of the spiral section and perpendicular to the first direction. Therefore, the centrifugal fan can give consideration to both the air outlet speed and the air volume, the air supply volume is increased, the air supply distance is increased, and the power load can be reduced under the condition of the same air volume.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning, in particular to a centrifugal fan and an air conditioner. Background Art

[0002] In the related art, air conditioners use centrifugal fans to achieve air supply; however, the air duct setting of the centrifugal fan is unreasonable, resulting in low air duct efficiency and heavy air supply load, which makes the power required for the same air volume greater, thereby affecting the air volume and air supply distance of the air conditioner, resulting in poor cooling and heating capabilities of the air conditioner and failure to achieve the required energy efficiency. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a centrifugal fan and an air conditioner, wherein the centrifugal fan is capable of simultaneously taking into account both the air outlet speed and air volume, thereby increasing the air supply volume and the air supply distance, thereby reducing the power load under the condition of the same air volume.

[0004] The centrifugal fan according to the embodiment of the first aspect of the present invention includes: a centrifugal volute, the centrifugal volute includes a spiral section and a diffuser section, at least one of the axial sides of the spiral section has an air inlet, a connecting port is provided on the peripheral wall of the spiral section, the diffuser section is connected to the connecting port to form a volute tongue at the connection position of the spiral section and the diffuser section, the diffuser section has an air outlet at one end away from the spiral section, the peripheral wall of the spiral section has a reference portion opposite to the volute tongue along a first direction, the first direction is the radial direction of the spiral section; a centrifugal impeller, the centrifugal impeller is rotatably arranged in the spiral section, wherein the centrifugal impeller The distance between the central axis of the centrifugal wind wheel and the reference part in the first direction is x1, the minimum radial distance between the centrifugal wind wheel and the spiral segment is x2, the width of the connecting port in the second direction is x3, the width of the air outlet in the second direction is x4, the length of the diffusion section in the first direction is x5, 290mm≤x1≤310mm, 12mm≤x2≤20mm, 296mm≤x3≤316mm, 475mm≤x4≤495mm, 350mm≤x5≤370mm, and the second direction is perpendicular to the axial direction of the spiral segment and perpendicular to the first direction.

[0005] According to the centrifugal fan of the embodiment of the present invention, it is convenient to take into account the wind speed and air volume at the same time, and it is convenient to increase the air supply volume and increase the air supply distance, so that the power load can be reduced under the condition of the same air volume; when the centrifugal fan 100 is used in the air conditioner 200, it is beneficial to increase the air volume and air supply distance of the air conditioner 200, and improve energy efficiency.

[0006] In some embodiments, 14 mm ≤ x 2 ≤ 16 mm.

[0007] In some embodiments, the peripheral wall of the spiral segment has a first flat plate portion and a second flat plate portion that are spaced apart from each other, and the first flat plate portion and the second flat plate portion are respectively located on both sides of the centrifugal impeller in the second direction.

[0008] In some embodiments, the centrifugal volute includes an end plate, a surrounding plate and a mounting plate, the end plate and the mounting plate are respectively arranged on the axial ends of the surrounding plate, the air inlet is formed on the end plate, the circumferential ends of the surrounding plate and the end plate form the air outlet, and the end plate and the surrounding plate are an integrally formed part; and / or, the end of the surrounding plate facing the mounting plate is formed with a connecting flange extending radially outward along the spiral section, the connecting flange includes a first flange and a second flange, the first flange is connected to the side of the spiral section away from the diffusion section, and is formed with a stop notch, a limit buckle with a limited position that is matched with the stop notch is formed on the mounting plate, and the second flange is connected to the diffusion section, the volute tongue and the spiral section, and is formed with a connecting hole.

[0009] In some embodiments, the end panels and the enclosure panels are both foam members.

[0010] In some embodiments, the peripheral wall of the spiral segment has a flat plate portion, and the flat plate portion includes a first flat plate portion and a second flat plate portion arranged at intervals, the first flat plate portion and the second flat plate portion are respectively located on both sides of the centrifugal wind wheel in the second direction, the first flange and the second flange are respectively located on opposite sides of the flat plate portion, and in the second direction, the outer edge of the connecting flange is flush with the corresponding outer edge of the flat plate portion.

[0011] An air conditioner according to an embodiment of the second aspect of the present invention includes a shell and a centrifugal fan according to the embodiment of the first aspect of the present invention, wherein the shell is formed with an inlet and an outlet spaced apart, and the centrifugal fan is arranged in the shell and is connected to the inlet and the outlet respectively.

[0012] The air conditioner according to the embodiment of the present invention adopts the centrifugal fan, which is beneficial to increasing the air volume and air supply distance of the air conditioner and improving energy efficiency.

[0013] In some embodiments, the outlet includes a first outlet formed on the front side of the housing, and a plurality of second outlets formed on the left and right sides of the housing, respectively. The air conditioner is configured to satisfy at least one of the following conditions: the first outlet is formed as a square opening, and the ratio of the width of the first outlet in the left-right direction to the height in the up-down direction is 5:3, and the opening area of ​​the first outlet is S, 0.17m 2 ≤S≤0.19m 2; A rotatable first air guide structure is provided at the first outlet, the first air guide structure comprising a first air guide plate and a second air guide plate arranged at intervals along the air flow direction, the rotation axis of the first air guide plate and the rotation axis of the second air guide plate forming a non-zero angle; the second outlet is located at the upper portion of the shell, and each second outlet is provided with a rotatable second air guide structure, the second air guide structure having a closed position and an air guiding position and comprising a third air guide plate, a fourth air guide plate and a fifth air guide plate, the third air guide plate and the fourth air guide plate being arranged at intervals, the fifth air guide plate being connected between the third air guide plate and the fourth air guide plate, in the closed position, the third air guide plate is arranged on the outer side of the fourth air guide plate and closes the second outlet, in the air guiding position, the second air guide structure opens the second outlet and guides the airflow at the second outlet in a direction away from the other second outlet, the fifth air guide plate being used to guide the airflow between the third air guide plate and the fourth air guide plate horizontally and / or obliquely.

[0014] In some embodiments, when a rotatable first air guide structure is provided at the first outlet, the rotation axis of the first air guide plate is horizontally arranged, and the maximum upward opening angle of the first air guide plate is less than or equal to 128° and greater than or equal to 36°.

[0015] In some embodiments, when a rotatable second air guide structure is respectively provided at each second outlet, the distance between the third air guide plate and the fourth air guide plate decreases along the airflow direction; and / or, the second air guide structure also includes a sixth air guide plate and a first heat insulation member, the sixth air guide plate is provided on the side of the third air guide plate away from the fourth air guide plate, and a cavity is defined between the sixth air guide plate and the third air guide plate, and the first heat insulation member is sealed and filled in the cavity.

[0016] In some embodiments, the shell includes a front side panel component and a rear box component connected front to back, the centrifugal fan is fixed to the rear box component, the front side panel component includes an air inlet frame and an air outlet frame, the inlet is formed on the air inlet frame, and the outlet is formed on the air outlet frame, the air inlet frame is arranged on the lower side of the air outlet frame and is opposite to the front and back of the centrifugal fan, the air inlet frame is an integrally formed part and includes a third plate body and two fourth plates connected to the left and right ends of the third plate body, the third plate body and the fourth plate body both participate in defining the appearance surface of the air conditioner, and an inlet is formed on each of the fourth plates; and / or the air outlet frame is an integrally formed part and includes a fifth plate body and two sixth plates connected to the left and right ends of the fifth plate body, the fifth plate body and the sixth plate body both participate in defining the appearance surface of the air conditioner, and an outlet is respectively formed on the fifth plate body and each of the sixth plates.

[0017] In some embodiments, the outlet on the fifth plate body is a first outlet, the outlet on the sixth plate body is a second outlet, and the air outlet frame also includes a first extension wall, which is connected to the front edge of the second outlet and extends from the front edge of the second outlet toward the other second outlet and away from the fifth plate body, so that a first cavity is defined between the first extension wall and the fifth plate body, and a rotatable first air guide plate is provided at the first outlet, and the left and right ends of the first air guide plate respectively extend into the corresponding first cavity.

[0018] In some embodiments, the air outlet frame also includes a second extension wall, which is connected to the rear edge of the second outlet and extends from the rear edge of the second outlet toward another second outlet and away from the fifth plate body, so that a second cavity is defined between the second extension wall and the sixth plate body, and a channel connected to the second outlet is defined between the first extension wall and the second extension wall. The air conditioner is constructed to meet at least one of the following conditions: Condition A1, the angle between the side of the first extension wall facing the channel and the front-to-back direction is α1, and the angle between the side of the second extension wall facing the channel and the front-to-back direction is α2, 50°≤α1≤70°, 95°≤α2≤120°; Condition A2, the extension line of the first extension wall and the extension line of the second extension wall define a wind sweeping area upstream of the channel, and at least one second air guide plate is provided in the wind sweeping area, the second air guide plate is located upstream of the first air guide plate, and the rotation axis of the second air guide plate is vertically arranged; Condition A3, a second heat insulation member is provided in the first cavity; Condition A4, a third heat insulation member is provided in the second cavity.

[0019] In some embodiments, condition A1 also includes: a groove recessed toward the fifth plate body is formed at one end of the first extension wall connected to the sixth plate body, the groove having a limiting groove wall arranged toward the outside of the sixth plate body, the limiting groove wall being used to limit the rotation of the second air guide structure arranged at the second outlet, the angle between the side of the first extension wall facing away from the fifth plate body and the limiting groove wall is α3, 100°≤α3≤140°; and / or, the angle between the side of the second extension wall facing the channel and the outer surface of the sixth plate body is α4, 60°≤α4≤85°.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1 is a schematic diagram of a centrifugal fan according to an embodiment of the present utility model;

[0023] Figure 2 yes Figure 1 Another schematic diagram of a centrifugal fan shown in ;

[0024] Figure 3 It is along Figure 1 Cross-sectional view along line AA;

[0025] Figure 4 It is along Figure 1 Cross-sectional view along the midline BB;

[0026] Figure 5 It is along Figure 2 Cross-sectional view of the mid-CC line;

[0027] Figure 6 yes Figure 1 Schematic diagram of the end plate and the shroud of the centrifugal volute shown in ;

[0028] Figure 7 1 is a schematic diagram of an air conditioner according to an embodiment of the present invention, wherein the display box and the remote control signal receiving device are both obscured by a panel. The figure is only for illustrating the position and structure of the display box and the position of the remote control signal receiving device.

[0029] Figure 8 yes Figure 7 Another schematic diagram of the air conditioner shown in ;

[0030] Figure 9 yes Figure 7 Another schematic diagram of the air conditioner shown in ;

[0031] Figure 10 yes Figure 7 Another schematic diagram of the air conditioner shown in ;

[0032] Figure 11 It is along Figure 8 Cross-sectional view along the mid-DD line;

[0033] Figure 12 yes Figure 11 An enlarged view of the circled section E;

[0034] Figure 13 yes Figure 7 Exploded view of the air conditioner shown in ;

[0035] Figure 14 yes Figure 13 A partial cross-sectional view of the air outlet frame shown in ;

[0036] Figure 15 yes Figure 13 Exploded view of the centrifugal fan and rear plate shown in ;

[0037] Figure 16 yes Figure 13 Schematic diagram of the air outlet frame and the first air guide structure shown in ;

[0038] Figure 17 yes Figure 16 Schematic diagram of the air outlet frame and the second air guide structure shown in ;

[0039] Figure 18 yes Figure 16 Another schematic diagram of the air outlet frame and the first air guide structure shown in , the area with cross-slatted grids is the first light-transmitting display area;

[0040] Figure 19 yes Figure 16 Exploded view of the air outlet frame, the first air guide structure and the second air guide structure shown in ;

[0041] Figure 20 yes Figure 16 A partial cross-sectional view of the air outlet frame and the second air guide structure shown in ;

[0042] Figure 21 yes Figure 20 An exploded view of the second air guide structure shown in FIG;

[0043] Figure 22 yes Figure 20 A schematic diagram of the second air guide structure shown in FIG;

[0044] Figure 23 yes Figure 20 Another schematic diagram of the second air guide structure shown in ;

[0045] Figure 24 It is along Figure 23 Cross-sectional view along the midline FF;

[0046] Figure 25 It is along Figure 23 Cross-sectional view along line GG, with arrows indicating the direction of airflow;

[0047] Figure 26 yes Figure 13 Schematic diagram of the air inlet frame and the first filter structure shown in ;

[0048] Figure 27 yes Figure 26 An exploded view of the air inlet frame, the first filter structure and the second filter structure shown in FIG;

[0049] Figure 28 It is a comparison chart of the air volume-power curves of the centrifugal fans of the prior art and the embodiment of the present application.

[0050] Reference numerals:

[0051] Air conditioner 200, centrifugal fan 100,

[0052] Centrifugal volute 1, spiral section 11, air inlet 11a, communication port 11b, reference portion 111, first flat portion 112, second flat portion 113, diffuser 12, air outlet 12a, volute tongue 13, end plate 14, first portion 141, second portion 142, enclosure 15, third portion 151, fourth portion 152, connecting flange 16, first flange 161, stop notch 161a, second flange 162, first flange section 1621, second flange section 1622, connecting hole 162a, mounting plate 17, limit buckle 171, centrifugal impeller 2, motor 3,

[0053] Housing 101, inlet 101a, outlet 101b, first outlet 101c, second outlet 101d, slot 101e, card hole 101f, first inlet 101g, second inlet 101h, front side panel 1011, air inlet frame 1011a, third plate F1, fourth plate F2, air outlet frame 1011b, fifth plate F3, main body area F31, first light-transmitting display area F32, second light-transmitting display area F33, Sixth plate F4, first extension wall F5, second extension wall F6, first wall portion F61, second wall portion F62, first cavity 1011c, second cavity 1011d, channel 1011e, second thermal insulation member 1011f, third thermal insulation member 1011g, matching groove 1011h, limiting groove wall 1011i, wind sweeping area 1011j, mounting frame 1011k, ​​rear box component 1012, rear plate 1012a, side plate 1012b,

[0054] The first air guide structure 102, the first air guide plate 1021, the plate body 1021a, the pivoting portion 1021b, the second air guide plate 1022,

[0055] The second wind guide structure 103, the third wind guide plate 1031, the cavity 1031d, the fourth wind guide plate 1032, the reinforcement structure 1032a, the groove 1032b, the rib 1032c, the fifth wind guide plate 1033, the sixth wind guide plate 1034, the first heat insulation member 1035,

[0056] The first filter structure 104, the chassis 105, the avoidance guide surface 105a, the top cover 106, the heat exchanger 107, the second filter structure 108, the display box 109, the first display structure 1091, the first display part 1091a, the second display part 1091b, the third display part 1091c, the second display structure 1092, the fourth display part 1092a, and the remote control signal receiving device 110. DETAILED DESCRIPTION

[0057] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0058] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present invention provides examples of various specific processes and materials, but a person of ordinary skill in the art will appreciate the applicability of other processes and / or the use of other materials.

[0059] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0060] Hereinafter, with reference to the accompanying drawings, a centrifugal fan 100 according to an embodiment of the first aspect of the present invention will be described. For example, the centrifugal fan 100 can be used in an air conditioning system, a clothes processing device with a drying function, a vacuum cleaner, a dehumidifier, and the like.

[0061] like Figure 1 and Figure 6 As shown, centrifugal fan 100 includes a centrifugal volute 1, which includes a spiral section 11 and a diffuser section 12. At least one of the two axial sides of spiral section 11 has an air inlet 11a. A communication port 11b is formed on the peripheral wall of spiral section 11. The diffuser section 12 is connected to the communication port 11b to form a volute tongue 13 at the connection between the spiral section 11 and the diffuser section 12. The diffuser section 12 has an air outlet 12a at one end away from the spiral section 11. Centrifugal fan 100 also includes a centrifugal impeller 2, which is rotatably disposed within the spiral section 11.

[0062] It can be seen that the diffuser section 12 is connected to the downstream side of the spiral section 11, and the volute tongue 13 is located at the starting position of the diffuser section 12. The spiral section 11 is mainly used to collect and guide the fluid flowing out of the centrifugal wind wheel 2, and the diffuser section 12 is mainly used to gradually expand the flow area of ​​the fluid to reduce the flow velocity and increase the static pressure.

[0063] Among them, such as Figure 1 and Figure 5 As shown, the peripheral wall of the spiral segment 11 has a first direction (eg Figure 1 The reference portion 111 is relative to the spiral segment 11 in the first direction (the vertical direction), the first direction is the radial direction of the spiral segment 11, the reference portion 111 and the volute tongue 13 are respectively located on both sides of the radial direction of the centrifugal wind wheel 2; the distance between the central axis of the centrifugal wind wheel 2 and the reference portion 111 in the first direction is x1, 290mm≤x1≤310mm, the minimum radial distance between the centrifugal wind wheel 2 and the spiral segment 11 is x2, the minimum distance between the peripheral wall of the spiral segment 11 and the centrifugal wind wheel 2 is x2, 12mm≤x2≤20mm, and the communication port 11b is located in the second direction (for example Figure 2 The width in the left and right directions) is x3, 296mm≤x3≤316mm, the width of the air outlet 12a in the second direction is x4, 475mm≤x4≤495mm, the length of the diffusion section 12 in the first direction is x5, 350mm≤x5≤370mm, the second direction is perpendicular to the axial direction of the spiral section 11, and the second direction is perpendicular to the first direction, then the second direction can be another radial direction of the spiral section 11 perpendicular to the first direction.

[0064] It is understood that, under normal circumstances, the minimum radial spacing between the centrifugal wind wheel 2 and the spiral segment 11 is located at the position of the volute tongue 13. Of course, the present application is not limited thereto. It should be noted that the central axis of the spiral segment 11 coincides with the central axis L of the centrifugal wind wheel 2, the axial direction of the spiral segment 11 is consistent with the axial direction of the centrifugal wind wheel 2, and the radial direction of the spiral segment 11 is consistent with the radial direction of the centrifugal wind wheel 2; the centrifugal fan 100 also includes a motor 3, which is connected to the centrifugal wind wheel 2 to drive the centrifugal wind wheel 2 to rotate. The motor 3 can be a DC motor (for example, a small DC motor, a large DC motor) or an AC motor.

[0065] Obviously, the position of the spacing x2 can be understood as the static pressure starting position of the centrifugal fan 100, the position of the spacing x1 and the position of the connecting port 11b can be understood as the static pressure middle position of the centrifugal fan 100, and the position of the air outlet 12a can be understood as the static pressure end position of the centrifugal fan 100. If the spacing x2 and the spacing x1 are too large, the outlet wind speed of the centrifugal fan 100 will be affected, and if they are too small, the outlet wind volume of the centrifugal fan 100 will be affected. In the above setting, it is easy to achieve a balance between the outlet wind speed and the air volume, which is conducive to achieving The airflow in the spiral section 11 is smooth, thus reducing energy loss. Dimensions x3, x4, and x5 define the dimensions of the large and small ends of the diffuser section 12, as well as its length, thereby indirectly limiting the cross-sectional variation rate of the diffuser section 12. The coordinated arrangement of dimensions x1 through x5 reduces the airflow resistance of the centrifugal volute 1, improving the efficiency of the centrifugal fan 100 and facilitating high airflow with low power. This helps reduce the power load at the same air volume. For example, the efficiency of the centrifugal fan 100 can be increased by 30%, while the power load can be reduced by 40% at the same air volume.

[0066] According to the centrifugal fan 100 of the embodiment of the present invention, it is convenient to take into account both the wind speed and air volume at the same time, and it is convenient to increase the air supply volume and increase the air supply distance, so that the power load can be reduced under the condition of the same air volume; when the centrifugal fan 100 is used in the air conditioner 200, it is beneficial to increase the air volume and air supply distance of the air conditioner 200, and improve energy efficiency.

[0067] For example, x1 can be any value in the range of 290mm to 310mm, for example, x1 is 290mm, 292mm, 295mm, 297mm, 300mm, 303mm, 305mm, 308mm, or 310mm; x2 can be any value in the range of 12mm to 20mm, for example, x2 is 12mm, 13mm, 14mm, 15mm, 16mm, 17mm, 18mm, 19mm, or 20mm; x3 can be any value in the range of 296mm to 316mm, for example, x3 is 296mm, 298mm, 301mm, 302mm, 303mm, 305mm, 308mm, or 310mm; 05mm, 307mm, 309mm, 310mm, 313mm, or 316mm, etc.; x4 can be any value in the range of 475mm to 495mm, for example, x4 is 475mm, 476mm, 479mm, 480mm, 482mm, 485mm, 488mm, 490mm, 493mm, or 495mm, etc.; x5 can be any value in the range of 350mm to 370mm, for example, x5 is 350mm, 351mm, 353mm, 355mm, 358mm, 360mm, 363mm, 365mm, 367mm, or 370mm, etc. For example, in Figure 5In the example, x1 = 303.1 mm, x2 = 15.1 mm, x3 = 305.9 mm, x4 = 486.6 mm, and x5 = 362.6 mm.

[0068] In some embodiments, 14 mm ≤ x 2 ≤ 16 mm. This facilitates further rationalization of the minimum distance between the peripheral wall of the spiral segment 11 and the centrifugal fan wheel 2 , so as to take into account both the wind speed and the wind volume of the centrifugal fan 100 .

[0069] In some embodiments, as Figure 5 and Figure 6 As shown, the circumferential wall of the spiral segment 11 has a first flat portion 112 and a second flat portion 113 arranged at intervals. The first flat portion 112 and the second flat portion 113 can be arranged at intervals along the circumference of the spiral segment 11. The first flat portion 112 and the second flat portion 113 are respectively located on both sides of the centrifugal wind wheel 2 in the second direction. Then, in the airflow direction within the spiral segment 11, the first flat portion 112 and the second flat portion 113 are both located downstream of the volute tongue 13, and both are located upstream of the connecting port 11b. At the same time, one of the first flat portion 112 and the second flat portion 113 is located upstream of the reference portion 111, and the other is located downstream of the reference portion 111.

[0070] It is understood that the first flat plate portion 112 and the second flat plate portion 113 are flat plate structures, and both sides of the thickness thereof can be formed into planes, so that a portion of the inner circumferential wall of the spiral segment 11 between the volute tongue 13 and the reference portion 111 is a plane, and a portion of the outer circumferential wall of the spiral segment 11 between the volute tongue 13 and the reference portion 111 is a plane, and a portion of the outer circumferential wall of the spiral segment 11 between the volute tongue 13 and the reference portion 111 is a plane, and a portion of the outer circumferential wall of the spiral segment 11 between the volute tongue 13 and the reference portion 111 is a plane. This facilitates reducing the size of the centrifugal fan 100 in the second direction without significantly affecting the airflow within the spiral segment 11, thereby saving space occupied by the centrifugal fan 100 in the second direction. For example, taking the centrifugal fan 100 as an example of a floor-standing air conditioner, where the first direction is the up-down direction and the second direction is the left-right direction, this facilitates reducing the width of the floor-standing air conditioner.

[0071] In some embodiments, as Figure 1 、 Figure 2 and Figure 6As shown, the centrifugal volute 1 includes an end plate 14, a surrounding plate 15 and a mounting plate 17. The end plate 14 and the mounting plate 17 are respectively arranged at the axial ends of the surrounding plate 15. The air inlet 11a is formed on the end plate 14, and the circumferential ends of the surrounding plate 15 and the end plate 14 form an air outlet 12a. The end plate 14 and the enclosure 15 are integrally formed parts, for example, the end plate 14 and the enclosure 15 are integrally cast parts, or integrally injection molded parts, etc., which is convenient for simplifying the production process, reducing the assembly process, and improving production efficiency. In addition, the end plate 14 and the enclosure 15 are tightly connected without an assembly gap, which is conducive to enhancing the strength and stability of the overall structure, and is convenient for rationally designing the profile of the air duct inside the centrifugal volute 1 to reduce energy loss and improve efficiency, thereby helping to improve the overall performance and stability of the centrifugal fan 100; and / or, the end of the enclosure 15 facing the mounting plate 17 is formed with a connecting flange 16 extending radially outward along the spiral section 11, and the connecting flange 16 and the mounting plate 17 can be used to achieve the installation of the centrifugal volute 1 without processing a connecting structure on the end plate 14 and the enclosure 15. Optionally, the mounting plate 17 can be used to install the motor 3 of the centrifugal fan 100, and the mounting plate 17 does not have an air inlet 11a; or the mounting plate 17 also has an air inlet 11a.

[0072] Optionally, the mounting plate 17 may close the entire end of the enclosure 15 away from the end plate 14, or may partially close the end of the enclosure 15 away from the end plate 14; for example, Figure 4 In the example shown in FIG. 1 , the mounting plate 17 closes the portion of the enclosure 15 corresponding to the scroll segment 11 .

[0073] It can be understood that a portion of the end plate 14 and a portion of the surrounding plate 15 can constitute the spiral section 11, and the above-mentioned portion of the surrounding plate 15 forms the peripheral wall of the spiral section 11, and another portion of the end plate 14 and another portion of the surrounding plate 15 can constitute the diffuser section 12; for example, the end plate 14 includes a first portion 141 and a second portion 142, and the first portion 141 and the second portion 142 are respectively located on opposite sides of the volute tongue 13, and the surrounding plate 15 includes a third portion 151 and two fourth portions 152, and the third portion 151 is roughly formed in a spiral shape, and the first portion 141 is connected to one axial end of the third portion 151, so that the first portion 141 and the third portion 151 constitute the spiral section 11, and the two fourth portions 152 are spaced and opposite along the second direction, and the second portion 142 is connected to the same end of the two fourth portions 152, so that the second portion 142 and the two fourth portions 152 constitute the diffuser section 12.

[0074] like Figure 1 and Figure 6As shown, the connecting flange 16 includes a first flange 161 and a second flange 162. The first flange 161 is connected to the side of the spiral section 11 facing away from the diffuser section 12, and the first flange 161 is formed with a stop notch 161a. The mounting plate 17 is formed with a limit buckle 171 that is limitedly engaged with the stop notch 161a. The second flange 162 is connected to the diffuser section 12, the volute tongue 13, and the spiral section 11, and the second flange 162 is formed with a connecting hole 162a. For example, the first flange 161 is connected to the edge of the third portion 151, and the second flange 162 can include a first flange section 1621 and a second flange section 1622 arranged at intervals. The first flange section 1621 is connected to the edge of the portion of the third portion 151 facing the volute tongue 13, the volute tongue 13, and the edge of one of the fourth portions 152, and the second flange section 1622 is connected to the edge of the other fourth portion 152.

[0075] Thus, the stop notch 161a and the limit buckle 171 are limited and matched, which facilitates the assembly of the centrifugal volute 1. In particular, when the first direction is the up and down direction, the stop notch 161a can be located at the lower end of the enclosure 15 to achieve upper and lower limits, so as to ensure the structural strength and stability at the position of the stop notch 161a; the connecting hole 162a can be used to pass fasteners to fix the centrifugal volute 1 with other components. For example, the centrifugal fan 100 is used in the air conditioner 200, and the air conditioner 200 includes a rear box component 1012, and a mounting hole is formed on the rear box component 1012. When the centrifugal volute 1 is installed, the mounting plate 17 is fixed to the rear box component 1012, and the enclosure 15 is arranged at one axial end toward the mounting plate 17. The stop notch 161a and the limit buckle 171 are aligned up and down and matched and limited up and down, and the fasteners are passed through the connecting hole 162a and the mounting hole to fix the centrifugal volute 1 to the rear box component 1012. It can be understood that the number and arrangement positions of the stop notches 161a and the connection holes 162a can be specifically set according to actual needs.

[0076] In some embodiments, as Figure 6 As shown, the end plate 14 and the surrounding plate 15 are both foam parts, which are convenient for reducing the weight of the centrifugal volute 1, reducing the cost of the centrifugal volute 1, and realizing a lightweight and high-strength structural design. In addition, the foam has good thermal insulation performance, which is convenient for preventing heat transfer. When the centrifugal fan 100 is used in the air conditioner 200, it is beneficial to reduce energy loss and improve the air conditioner energy efficiency ratio. In addition, the foam has good sound absorption performance and corrosion resistance and aging resistance, which is convenient for noise reduction and suitable for harsh environments. The foam also has good processing performance, which is convenient for realizing a diversified structure of the centrifugal volute 1. For example, Figure 6 In the example, the end plate 14 and the enclosure 15 are integrally formed parts and are foam parts; of course, the end plate 14 and the enclosure 15 can also be connected by assembly means, and the materials of the end plate 14 and the enclosure 15 are not limited to this.

[0077] In some embodiments, as Figure 1 、 Figure 5 and Figure 6 As shown, the peripheral wall of the spiral segment 11 has a flat plate portion, which includes a first flat plate portion 112 and a second flat plate portion 113 arranged at intervals. The first flat plate portion 112 and the second flat plate portion 113 are respectively located on both sides of the centrifugal impeller 2 in the second direction, and the first flange 161 and the second flange 162 are respectively located on opposite sides of the flat plate portion, and in the second direction, the outer edge of the connecting flange 16 is flush with the corresponding outer edge of the flat plate portion, then one end edge of the connecting flange 16 in the second direction is flush with the edge of the first flat plate portion 112, and the other end edge of the connecting flange 16 in the second direction is flush with the edge of the second flat plate portion 113. The setting of the connecting flange 16 ensures that the centrifugal volute 1 can be reliably installed without increasing the occupied space of the centrifugal volute 1.

[0078] The inventors conducted corresponding tests on the centrifugal fan 100 of the embodiment of the present application (x1 = 303.1 mm, x2 = 15.1 mm, x3 = 305.9 mm, x4 = 486.6 mm, x5 = 362.6 mm, and the diameter of the centrifugal fan wheel 2 is 400 mm) and the centrifugal fan of the prior art (the air duct parameters are different from those of the embodiment of the present application). The test results are shown in the following table and Figure 28 :

[0079]

[0080] The wind volume-power curve corresponding to the above table is as follows Figure 28 As shown, it can be clearly seen that compared with the existing technical solutions, the embodiment of the present application is convenient for achieving a larger air volume with low power, the air duct efficiency is high, the power load is low at the same air volume, and it is convenient to achieve long-distance air supply.

[0081] According to an embodiment of the second aspect of the present invention, an air conditioner 200 includes a housing 101 and a centrifugal fan 100. The housing 101 is formed with an inlet 101a and an outlet 101b spaced apart from each other. The centrifugal fan 100 is the centrifugal fan 100 according to the embodiment of the first aspect of the present invention. The centrifugal fan 100 is disposed within the housing 101 and is in communication with the inlet 101a and the outlet 101b, respectively. Driven by the centrifugal fan 100, outside air enters the housing 101 through the inlet 101a and is finally discharged from the housing 101 through the outlet 101b. According to an embodiment of the present invention, the air conditioner 200 employs the centrifugal fan 100, which helps to increase the air volume and air delivery distance of the air conditioner 200, thereby improving energy efficiency.

[0082] It is worth noting that the type of air conditioner 200 according to the embodiments of the present application is not limited and can be an integrated air conditioner or a split air conditioner. Integrated air conditioners can include window air conditioners, portable air conditioners, etc., and split air conditioners can include wall-mounted air conditioners, cabinet air conditioners (e.g., square cabinet air conditioners, round cabinet air conditioners, etc.), floor-standing air conditioners, etc. Once the type of air conditioner 200 is determined, the shape of the housing 101, the number and position of the centrifugal fans 100, and the number and distribution of the inlets 101a and outlets 101b can be adaptively designed.

[0083] In some embodiments, as Figure 7 、 Figure 9 and Figure 10 As shown, the outlet 101b includes a first outlet 101c and multiple second outlets 101d. The first outlet 101c is formed on the front side of the shell 101, and the multiple second outlets 101d are respectively located on the left and right sides of the shell 101, which is beneficial to increasing the air supply range of the air conditioner 200 and facilitating the air outlet from the front and left and right sides of the air conditioner 200. At the same time, the centrifugal fan 100 has a large air volume, and combined with the design of the outlet 101b, it is beneficial for the air conditioner 200 to achieve an embracing air supply; when the air conditioner 200 is a cabinet unit, it can improve the problem that users on the left and right sides cannot feel the cooling and heating effects, especially under medium and low-grade working conditions, so that the air conditioner 200 can better adapt to home scenes, especially home meeting scenes, and improve comfort.

[0084] The air conditioner 200 is configured to satisfy at least one of the following conditions: Condition A1: the first outlet 101c is formed into a square opening, and the ratio of the width d of the first outlet 101c in the left-right direction to the height h of the first outlet 101c in the up-down direction is 5:3, and the opening area of ​​the first outlet 101c is S, 0.17m 2 ≤S≤0.19m 2 Under the condition of sufficient and same high static pressure ratio, the above-mentioned setting of the first outlet 101c can achieve a good match with the centrifugal fan 100, which is convenient for increasing the air volume, optimizing the air inlet pressure and the air outlet pressure, and is conducive to achieving 2800m when the speed of the centrifugal wind wheel 2 is above 600r / min. 3 / h while achieving an air supply distance greater than 25m, so that there is a sense of wind above 25m, it is not easy for the wind speed to be reduced due to the large size of the first outlet 101c, nor is it easy for the air volume to be limited due to the small size of the first outlet 101c, so that the air conditioner 200 can achieve good cooling and heating effects; Condition A2, a rotatable first air guide structure 102 is provided at the first outlet 101c, the first air guide structure 102 includes a first air guide plate 1021 and a second air guide plate 1022 arranged at intervals along the direction of air flow, and the rotation of the first air guide plate 1021 The rotating axis and the rotating axis of the second air guide plate 1022 form a non-zero angle, then the extension directions of the first air guide plate 1021 and the second air guide plate 1022 are different, the first air guide plate 1021 and the second air guide plate 1022 can be rotated relative to the shell 101 respectively so that the two can cooperate to adjust the air outlet direction of the first outlet 101c, which is conducive to increasing the air outlet angle of the first outlet 101c and facilitating further increasing the air supply range of the air conditioner 200; Condition A3, the second outlet 101d is located at the upper part of the shell 101, and each second outlet 101d is located at the upper part of the shell 101. 1d are provided with a rotatable second wind guide structure 103, the second wind guide structure 103 has a closed position and a wind guide position, and the second wind guide structure 103 includes a third wind guide plate 1031, a fourth wind guide plate 1032 and a fifth wind guide plate 1033, the third wind guide plate 1031 and the fourth wind guide plate 1032 are arranged at intervals, and the fifth wind guide plate 1033 is connected between the third wind guide plate 1031 and the fourth wind guide plate 1032. In the closed position, the third wind guide plate 1031 is arranged on the outside of the fourth wind guide plate 1032 and the third wind guide plate 1033 is connected to the fourth wind guide plate 1032. 1031 closes the second outlet 101d. In the wind guiding position, the second wind guiding structure 103 opens the second outlet 101d and the second wind guiding structure 103 guides the airflow at the second outlet 101d in a direction away from the other second outlet 101d. The fifth wind guide plate 1033 is used to guide the airflow between the third wind guide plate 1031 and the fourth wind guide plate 1032 horizontally and / or obliquely. The second wind guide structure 103 can adjust the air outlet direction of the second outlet 101d to improve the surrounding air supply effect of the air conditioner 200.

[0085] For example, the air conditioner 200 is configured to meet condition A2, the rotation axis of the first air guide plate 1021 and the rotation axis of the second air guide plate 1022 can be an acute angle or a right angle, the first air guide plate 1021 swings up and down, and the second air guide plate 1022 swings left and right; the specifications (including structure and corresponding dimensions) of multiple first air guide plates 1021 are the same.

[0086] For example, the air conditioner 200 is configured to meet condition A3, and the fifth air guide plate 1033 can be fixedly connected to the third air guide plate 1031 and the fourth air guide plate 1032. At this time, the fifth air guide plate 1033 is arranged at an angle to guide the airflow between the third air guide plate 1031 and the fourth air guide plate 1032 upward or downward, or the fifth air guide plate 1033 is arranged horizontally to achieve horizontal wind guidance; or, the fifth air guide plate 1033 can be movably connected between the third air guide plate 1031 and the fourth air guide plate 1032, for example, the fifth air guide plate 1033 is rotatable, then the fifth air guide plate 1033 can be rotated to a horizontal state to achieve horizontal wind guidance, or it can be rotated to an inclined state to achieve inclined wind guidance. Among them, in the closed position, the fourth air guide plate 1032 can be located inside the shell 101. In the air guiding position, the second air guide structure 103 on the left can guide the airflow at the second outlet 101d on the left to the left and forward, and the second air guide structure 103 on the right can guide the airflow out of the second outlet 101d on the right to the right and forward, so as to enhance the surrounding air supply effect.

[0087] Alternatively, as Figure 21 As shown, the width of the fourth air guide plate 1032 is smaller than that of the third air guide plate 1031, and a reinforcement structure 1032a is provided on the surface of the fourth air guide plate 1032 facing away from the third air guide plate 1031 to enhance the reliability of the fourth air guide plate 1032. For example, the reinforcement structure 1032a includes a plurality of grooves 1032b and a plurality of ribs 1032c. The grooves 1032b and the ribs 1032c are alternately arranged along the length of the fourth air guide plate 1032, resulting in a simple structure and easy processing.

[0088] In some embodiments, as Figure 7 and Figure 19As shown, when a rotatable first air guide structure 102 is provided at the first outlet 101c, the air conditioner 200 meets condition A2, the rotation axis of the first air guide plate 1021 is horizontally arranged, and the maximum upward opening angle of the first air guide plate 1021 is less than or equal to 128° and greater than or equal to 36°; for example, the angle of the first air guide plate 1021 when closing the first outlet 101c is 0°, and the maximum upward opening angle of the first air guide plate 1021 is α, then the rotation angle range of the first air guide plate 1021 is 0~α, and 36°≤α≤128°, so as to improve the problem that α is too small and easily blocks the air flow, and α is too large and easily causes cold air to blow forward and condensation is easily generated on the first air guide plate 1021. It is understood that the upward opening of the first air guide plate 1021 means that when the first air guide plate 1021 is in a position closing the first outlet 101c, the lower end of the first air guide plate 1021 swings upward to open the first outlet 101c. Therefore, the above-mentioned rotational arrangement of the first air guide plate 1021 is particularly suitable for the air conditioner 200 that blows cold air, facilitating the downward blowing of cold air. For example, the angle α can be 36°, 40°, 47°, 50°, 55°, 62°, 84°, 100°, 108°, 117°, 120°, or 128°, etc.

[0089] In some embodiments, when each second outlet 101d is provided with a rotatable second air guide structure 103, the air conditioner 200 meets condition A3. Figure 9 、 Figures 19-21 and Figure 25 As shown, the distance between the third air guide plate 1031 and the fourth air guide plate 1032 decreases along the airflow direction, so the airflow flow area between the third air guide plate 1031 and the fourth air guide plate 1032 decreases along the airflow direction, so that the flow channel between the third air guide plate 1031 and the fourth air guide plate 1032 has a certain airflow acceleration effect, so that the airflow at the second outlet 101d can increase the flow rate when flowing through the second air guide structure 103, so as to better cooperate with the air outlet of the first outlet 101c to supply air, especially when the opening area of ​​the second outlet 101d is smaller than the opening area of ​​the first outlet 101c, the second outlet 101d and the first outlet 101c distribute the air supply of the centrifugal fan 100, which is conducive to appropriately increasing the air volume at the second outlet 101d; and / or, as Figure 20-25As shown, the second wind guide structure 103 further includes a sixth wind guide plate 1034 and a first heat insulating member 1035. The sixth wind guide plate 1034 is provided on the side of the third wind guide plate 1031 away from the fourth wind guide plate 1032, and a cavity 1031d is defined between the sixth wind guide plate 1034 and the third wind guide plate 1031. The first heat insulating member 1035 is sealed and filled in the cavity 1031d. The cavity 1031d and the first heat insulating member 1035 can isolate the surface of the sixth wind guide plate 1034 from the surface of the third wind guide plate 1031. When the second air guide structure 103 guides cold air, condensation is not easily generated on the surface of the third air guide plate 1031, and the first thermal insulation component 1035 can play a certain sealing role on the cavity 1031d. Even if there is an assembly gap between the sixth air guide plate 1034 and the third air guide plate 1031, the first thermal insulation component 1035 can seal at least part of the assembly gap between the two, reducing the risk of cold air flowing into the cavity 1031d and generating condensation in the cavity 1031d, which is beneficial to improving the reliability of the second air guide structure 103.

[0090] Optionally, the first thermal insulation member 1035 is sponge or foam, etc., so as to adapt to different shapes of the cavity 1031d.

[0091] In some embodiments, the air conditioner 200 has a first outlet 101c on the front side and second outlets 101d on the left and right sides respectively. A first air guide structure 102 is provided at the first outlet 101c, and a second air guide structure 103 is provided at the second outlet 101d. α1 = 64.5°, α2 = 109.5°, α3 = 111°, and α4 = 75°. The air conditioner 200 was tested. When the cooling capacity cc satisfies 10000W < cc ≤ 14000W, the upward opening angle of the first air guide plate 1021 of the air conditioner 200 is 113.14°, so that the upper and lower The air supply angle is 113.14°, and the second air guide structure 103 is opened 93.29° to its side so that the left and right air supply angles are 93.29°. In other words, the left second air guide structure 103 is rotated to the left to a position of 93.29° relative to the front-to-back direction, and the right second air guide structure 103 is rotated to the right to a position of 93.29° relative to the front-to-back direction. The setting of the air conditioner 200 can take into account large air volume (when 10000W<cc≤14000W, the design requirement for large air volume is that the upper and lower air supply angles are greater than or equal to 95°, and the left and right air supply angles are ≥90°) and anti-condensation design.

[0092] In some embodiments, as Figure 7-10 and Figure 13As shown, the shell 101 includes a front side panel component 1011 and a rear box component 1012 connected front and back, the centrifugal fan 100 is fixed to the rear box component 1012, the front side panel component 1011 includes an air inlet frame 1011a and an air outlet frame 1011b, the inlet 101a is formed on the air inlet frame 1011a, and the outlet 101b is formed on the air outlet frame 1011b, the air inlet frame 1011a is arranged on the lower side of the air outlet frame 1011b, and the air inlet frame 1011a is opposite to the centrifugal fan 100 front and back, then the air conditioner 200 can be roughly in the form of lower air intake and upper air outlet, which is convenient for matching with the centrifugal fan 100, so that the centrifugal fan 100 can be arranged in the up and down directions, which is beneficial to simplify the internal air duct of the air conditioner 200.

[0093] For example, the rear box component 1012 includes a rear plate 1012a and two side plates 1012b, the two side plates 1012b are respectively connected to the left and right ends of the rear plate 1012a, the rear plate 1012a and the side plates 1012b can be an integral part or a split part, and the centrifugal fan 100 is fixed to the rear plate 1012a.

[0094] Optionally, the air inlet frame 1011a includes a third plate F1 and two fourth plates F2 connected to the left and right ends of the third plate F1, that is, a fourth plate F2 is connected to the left and right ends of the third plate F1 respectively, and the third plate F1 and the fourth plate F2 both participate in defining the appearance surface of the air conditioner 200. An inlet 101a is formed on each fourth plate F2, and the air inlet frame 1011a is an integrally molded part, which can improve the structural strength and reliability of the air inlet frame 1011a (for example, the air inlet frame 1011a is a plastic part), and the air inlet frame 1011a can not only play its original role, but also serve as the air inlet panel and air inlet surface frame of the air conditioner 200, which is convenient for "multiple uses of one thing" and simplifies assembly. To simplify the assembly process of the air conditioner 200 and improve production efficiency; and / or, the air outlet frame 101b includes a fifth plate F3 and two sixth plates F4 connected to the left and right ends of the fifth plate F3, that is, a sixth plate F4 is connected to the left and right ends of the fifth plate F3 respectively, and the fifth plate F3 and the sixth plate F4 both participate in defining the appearance of the air conditioner 200. An outlet 101b is respectively formed on the fifth plate F3 and each sixth plate F4, and the air outlet frame 1011b is an integrally molded part, so that the air outlet frame 1011b can not only play its original role, but also serve as the air outlet panel and air outlet surface frame of the air conditioner 200, which is convenient for "multi-purpose use of one thing", simplifies the assembly process, and improves production efficiency.

[0095] For example, Figure 11 、 Figure 12 and Figure 27As shown, the plurality of inlets 101a include a first inlet 101g and a second inlet 101h. The first inlet 101g is formed on the left and right sides of the air inlet frame 1011a, and the second inlet 101h is formed on the bottom side of the air inlet frame 1011a, so that the air conditioner 200 can take in air from three sides. Of course, the bottom wall of the air inlet frame 1011a may not be formed with an inlet 101a. Figure 7-10 and Figure 19 As shown, the multiple outlets 101b include a first outlet 101c and a second outlet 101d. The first outlet 101c is formed on the front side of the air outlet frame 1011b, and the second outlet 101d is formed on the left and right sides of the air outlet frame 1011b, respectively. This allows the air conditioner 200 to discharge air on three sides, making it easier to improve the air supply range of the air conditioner 200 so that the air conditioner 200 can achieve an encircling air supply. When the air conditioner 200 is a cabinet unit, the problem that users on its left and right sides cannot feel the cooling and heating effects can be improved, especially under medium and low-grade working conditions, so that the air conditioner 200 can better adapt to home scenes, especially home meeting scenes, and improve comfort.

[0096] In some embodiments, as Figure 14 、 Figure 19 and Figure 20 As shown, the outlet 101b on the fifth plate F3 is the first outlet 101c, and the outlet 101b on the sixth plate F4 is the second outlet 101d. The air outlet frame 1011b also includes a first extension wall F5, which is connected to the front edge of the second outlet 101d. The first extension wall F5 extends from the front edge of the second outlet 101d toward the other second outlet 101d and away from the fifth plate F3, so that a first cavity 1011c is defined between the first extension wall F5 and the fifth plate F3. For the left second outlet 101d, the first extension wall F5 extends rightward and rearward from the front edge of the second outlet 101d. For the right second outlet 101d, the first extension wall F5 extends leftward and rearward from the front edge of the second outlet 101d, so that the first cavity 1011c is respectively provided on the left and right sides of the fifth plate F3, and the first cavities 1011c on both sides are located on the rear side of the fifth plate F3.

[0097] In other words, the second outlet 101d is spaced apart from the fifth plate F3, so that the first extension wall F5 is spaced apart on the rear side of the fifth plate F3. The first extension wall F5 can provide a certain degree of shielding for the connection position of the fifth plate F3 and the sixth plate F4, so as to guide the airflow to the second outlet 101d, which is beneficial to reducing the risk of vortex generation at the corner position of the fifth plate F3 and the sixth plate F4, so as to reduce flow resistance, reduce vortex loss and reduce airflow energy loss. Moreover, if the air conditioner 200 blows cold air, the corner position will not be directly blown by the cold air, which is beneficial to reduce the risk of condensation at the corner position. In addition, the first extension wall F5 can guide the airflow at the second outlet 101d forward, so that the airflow blown out from the left and right sides of the air conditioner 200 can be blown forward at an angle, which is beneficial to improving the surrounding air outlet effect of the air conditioner 200.

[0098] Among them, a rotatable first air guide plate 1021 is provided at the first outlet 101c. The first air guide plate 1021 can guide the air outflow of the first outlet 101c and / or open and close the first outlet 101c. The left and right ends of the first air guide plate 1021 respectively extend into the corresponding first cavity 1011c. The first cavity 1011c provides a certain space for the arrangement and installation of the first air guide plate 1021, so as to more rationally utilize the internal space of the air outlet frame 1011b and facilitate the rotational connection of the end of the first air guide plate 1021 with the air outlet frame 1011b. It is understandable that the end of the first air guide plate 1021 can be directly rotatably connected to the air outlet frame 1011b, or the end of the first air guide plate 1021 can be indirectly rotatably connected to the air outlet frame 1011b through other components provided in the first cavity 1011c.

[0099] Exemplarily, the first air guide plate 1021 includes a plate body 1021a and a pivot portion 1021b, and the plate body 1021a has a pivot portion 1021b at both ends of its length. A mounting bracket 1011k is provided in the first cavity 1011c, and the mounting bracket 1011k is fixed to the air outlet frame 1011b. The two are an integral part or a split part, and the mounting bracket 1011k rotates in coordination with the pivot portion 1021b.

[0100] In some embodiments, as Figure 14 and Figure 20As shown, the air outlet frame 1011b also includes a second extension wall F6, which is connected to the rear edge of the second outlet 101d and extends from the rear edge of the second outlet 101d toward another second outlet 101d and away from the fifth plate F3, so that a second cavity 1011d is defined between the second extension wall F6 and the sixth plate F4, and a channel 1011e connected to the second outlet 101d is defined between the first extension wall F5 and the second extension wall F6. For the left second outlet 101d, the second extension wall F6 extends rightward and backward from the rear edge of the second outlet 101d. For the right second outlet 101d, the second extension wall F6 extends leftward and backward from the rear edge of the second outlet 101d, so that a second cavity 1011d corresponds to the inner side of each sixth plate F4. In the airflow direction at the second outlet 101d, the channel 1011e is located upstream of the second outlet 101d, the first cavity 1011c and the channel 1011e are respectively located on the front and rear sides of the first extension wall F5, and the second cavity 1011d and the channel 1011e are respectively located on the front and rear sides of the second extension wall F6.

[0101] The air conditioner 200 is configured to satisfy at least one of the following conditions:

[0102] Condition A1: Figure 14 As shown, the angle between the side of the first extension wall F5 facing the channel 1011e (i.e., the rear side of the first extension wall F5) and the front-to-back direction is α1, and the angle between the side of the second extension wall F6 facing the channel 1011e (i.e., the front side of the second extension wall F6) and the front-to-back direction is α2, 50°≤α1≤70°, 95°≤α2≤120°, so that while the air outlet of the second outlet 101d is blown out at an angle relative to the left and right directions and the front-to-back directions, when the same airflow is distributed between the first outlet 101c and the second outlet 101d, the first extension wall F5 and the second extension wall F6 are not easily blown against by the airflow, which is beneficial to reducing the angle between the first extension wall F5 and the airflow and reducing the angle between the second extension wall F6 and the airflow, thereby reducing the risk of condensation on the first extension wall F5 and the second extension wall F6, and improving maintenance convenience and reliability. Exemplarily, α1 can be any value in the range of 50° to 70°, for example, α1 is 50°, 52°, 55°, 57°, 59°, 60°, 61°, 64°, 65°, 68°, or 70°, etc.; α2 can be any value in the range of 95° to 120°, for example, α2 is 95°, 98°, 100°, 101°, 103°, 105°, 108°, 110°, 113°, 106°, 108°, or 120°, etc.

[0103] Condition A2, such as Figure 20As shown, the extension line of the first extension wall F5 and the extension line of the second extension wall F6 define a wind sweeping area 1011j upstream of the channel 1011e, and at least one second wind guide plate 1022 is provided in the wind sweeping area 1011j. The second wind guide plate 1022 is located upstream of the first wind guide plate 1021, so that part of the air outlet of the air conditioner 200 first flows through the second wind guide plate 1022 and then flows through the first wind guide plate 1021. The rotation axis of the second wind guide plate 1022 is vertically set, so the second wind guide plate 1022 swings left and right to guide the air, so that the second wind guide plate 1022 matches the channel 1011e. The second wind guide plate 1022 can smoothly guide part of the airflow to the channel 1011e, which is beneficial to reduce the wind outlet resistance.

[0104] Condition A3, such as Figure 20 As shown, a second thermal insulation member 1011f is provided in the first cavity 1011c, and the second thermal insulation member 1011f can reduce the cold wind flowing into the first cavity 1011c, thereby reducing the risk of condensation on the inner wall of the first cavity 1011c.

[0105] Condition A4, such as Figure 20 As shown, a third thermal insulation member 1011g is provided in the second cavity 1011d, and the third thermal insulation member 1011g can reduce the cold wind flowing into the second cavity 1011d, thereby reducing the risk of condensation on the inner wall of the second cavity 1011d.

[0106] In some embodiments, as Figure 14As shown, condition A1 also includes: a matching groove 1011h is formed at one end of the first extension wall F5 connected to the sixth plate body F4, which is recessed toward the fifth plate body F3; the matching groove 1011h has a limiting groove wall 1011i arranged toward the outside of the sixth plate body F4; the limiting groove wall 1011i is used to limit the rotation of the second air guide structure provided at the second outlet 101d, so as to facilitate at least one of the following: the second air guide structure 103 is rotated into position (for example, when the second air guide structure 103 rotates to stop at the limiting groove wall 1011i, the second air guide structure 103 closes the second outlet 101d) and the rotation into position identification; the angle between the side of the first extension wall F5 facing away from the fifth plate body F3 and the limiting groove wall 1011i is α3, 1 00°≤α3≤140°, then, on the premise that α1 is satisfied, the above-mentioned setting of α3 can limit the arrangement angle of the limiting groove wall 1011i to improve the eddy current at the matching groove 1011h, thereby reducing the risk of condensation on the groove wall of the matching groove 1011h; and / or, the angle between the side of the second extension wall F6 facing the channel 1011e and the outer surface of the sixth plate body F4 is α4, 60°≤α4≤85°, then, on the premise that α2 is satisfied, the above-mentioned setting of α4 can limit the arrangement angle of the outer surface of the sixth plate body F4 to improve the flow field on the outer surface of the sixth plate body F4 at the position of the second outlet 101d away from the fifth plate body F3, thereby reducing the risk of condensation on the outer surface of the sixth plate body F4.

[0107] It can be understood that, for the sixth plate body F4 on the left, the left side of the mating groove 1011h on the first extension wall F5 and the side facing away from the fifth plate body F3 are both open, and the limiting groove wall 1011i is the right side groove wall of the mating groove 1011h; similarly, for the sixth plate body F4 on the right, the right side of the mating groove 1011h on the first extension wall F5 and the side facing away from the fifth plate body F3 are both open, and the limiting groove wall 1011i is the left side groove wall of the mating groove 1011h. For example, α3 can be any value in the range of 100° to 140°, for example, α3 is 100°, 105°, 110°, 115°, 117°, 120°, 124°, 129°, 130°, 138°, 140°, etc.; α4 can be any value in the range of 60° to 85°, for example, α4 is 60°, 62°, 65°, 68°, 70°, 73°, 76°, 80°, 82°, 85°, etc. In some embodiments, as Figure 14 As shown, α1 = 64.5°, α2 = 109.5°, α3 = 111°, and α4 = 75°, and the air outlet frame 1011b is convenient for integrated processing.

[0108] In some embodiments, as Figure 14 and Figure 20As shown, the side surfaces of the first extension wall F5 and the second extension wall F6 relative to each other extend away from each other in the direction toward the corresponding second outlet 101d. The side surface of the first extension wall F5 toward the second extension wall F6 is the side surface of the first extension wall F5 toward the channel 1011e. Similarly, the side surface of the second extension wall F6 toward the first extension wall F5 is the side surface of the second extension wall F6 toward the channel 1011e. Then, the distance between the first extension wall F5 and the second extension wall F6 in the front-to-back direction increases in the direction toward the corresponding second outlet 101d, or in other words, the width of the channel 1011e in the front-to-back direction increases in the direction toward the corresponding second outlet 101d, so as to provide sufficient movement space for the second air guide structure 103 provided at the second outlet 101d and facilitate demolding.

[0109] For example, Figure 14 As shown, the free end surface of the first extension wall F5 is parallel to the free end surface of the second extension wall F6, or the free end surface of the first extension wall F5 and the free end surface of the second extension wall F6 are located on the same plane, and the opposite side surfaces of the first extension wall F5 and the second extension wall F6 extend away from each other in the direction toward the corresponding second outlet 101d, then α1+α2<180°.

[0110] Optionally, the angle between the side surface of the second extension wall F6 facing the channel 1011e and the outer surface of the sixth plate body F4 is α4, and the second extension wall F6 includes a first wall portion F61 and a second wall portion F62 that are bent and connected. The first wall portion F61 is arranged opposite to the sixth plate body F4, and the second wall portion F62 is connected between the sixth plate body F4 and the first wall portion F61; the side surfaces of the first wall portion F61 and the sixth plate body F4 that are opposite to each other extend away from each other in the front-to-back direction in a direction away from the fifth plate body F3, so as to facilitate making α2+α4>180°, especially when the side surface of the first wall portion F61 facing away from the sixth plate body F4 is perpendicular to the left-right direction, the above arrangement is not likely to excessively reduce the thickness of the first wall portion F61 and the sixth plate body F4, and at the same time facilitates making the angle between the sixth plate body F4 and the fifth plate body F3 an obtuse angle, which is beneficial to reducing the inclination of the first extension wall F5 and the second extension wall F6 relative to the left-right direction.

[0111] In some embodiments, as Figure 18As shown, the fifth board F3 includes a main body area F31, a first light-transmitting display area F32 and a second light-transmitting display area F33. The main body area F31 is arranged around the outer peripheral side of the first light-transmitting display area F32, and the thickness of the main body area F31 is greater than the thickness of the first light-transmitting display area F32. The second light-transmitting display area F33 is connected between the main body area F31 and the first light-transmitting display area F32, the thickness of the second light-transmitting display area F33 is greater than the thickness of the first light-transmitting display area F32, and the thickness of the second light-transmitting display area F33 is less than the thickness of the main body area F31.

[0112] It can be seen that the thickness of the first light-transmitting display area F32 and the second light-transmitting display area F33 are both smaller than the thickness of the main body area F31, so that the display light of the air conditioner 200 can be displayed from the back side of the fifth plate body F3 through the first light-transmitting display area F32 and the second light-transmitting display area F33; however, due to the different thicknesses of the first light-transmitting display area F32 and the second light-transmitting display area F33, the display clarity of the first light-transmitting display area F32 and the second light-transmitting display area F33 is different, so as to better match the different needs of users for obtaining relevant information of the air conditioner 200.

[0113] For example, with regard to the set temperature and networking information of the air conditioner 200, these information usually need to be directly obtained by the user at a long distance so that the user can better control the air conditioner 200. Then, the display portion displaying this information can be opposite to the first light-transmitting display area F32, so that it can be displayed more clearly through the first light-transmitting display area F32. When the user controls the air conditioner 200 at a long distance, the corresponding information can also be directly obtained. As for the operation key information of the air conditioner 200, the user usually operates the corresponding operation key at a close distance from the air conditioner 200. Then, the display portion displaying this information can be opposite to the second light-transmitting display area F33, so that it can be displayed more vaguely through the second light-transmitting display area F33. When the user controls the air conditioner 200 at a close distance, the corresponding information can also be directly obtained.

[0114] Obviously, the above-mentioned settings of the present application can better match the different needs of users for obtaining relevant information, so as to improve the user's convenience in operating the air conditioner 200; at the same time, the first light-transmitting display area F32 and the second light-transmitting display area F33 have different thicknesses, and the degree of weakening of the fifth plate F3 can be different. There is no need to set a larger thinning and weakening area on the fifth plate F3, which is conducive to improving the structural strength and stability of the fifth plate F3 while meeting the display requirements.

[0115] In addition, since the main body area F31 is arranged around the first light-transmitting display area F32, and the second light-transmitting display area F33 is connected between the main body area F31 and the first light-transmitting display area F32, in the left-right direction, the opposite side edges of the second light-transmitting display area F33 are respectively spaced apart from the width ends of the fifth plate F3, and in the up-down direction, the opposite side edges of the second light-transmitting display area F33 are respectively spaced apart from the length ends of the fifth plate F3. Therefore, the width d2 of the second light-transmitting display area F33 is smaller than the width d1 of the panel 1, and the length L2 of the second light-transmitting display area F33 is smaller than the length L1 of the panel 1, so as to achieve reliable use of the fifth plate F3 while meeting display requirements.

[0116] It will be understood that in this embodiment of the present application, there may be one or more first light-transmitting display areas F32, and the projection of the first light-transmitting display area F32 along the thickness direction of the fifth plate body F3 (i.e., the front-to-back direction) is located within the outer contour of the projection of the second light-transmitting display area F33 along the thickness direction of the fifth plate body F3. The first light-transmitting display area F32 and the second light-transmitting display area F33 are both physical structural areas on the panel 1, and the display light on the back side of the fifth plate body F3 passes through the first light-transmitting display area F32 and the second light-transmitting display area F33, so that the user can observe the display information on the front side of the fifth plate body F3, rather than displaying the information through a hollow design.

[0117] Furthermore, if Figure 7 、 Figure 13 and Figure 19As shown, the air conditioner 200 further includes a display box 109, which is fixed to the back side of the fifth plate F3, and at least part of the second light-transmitting display area F33 and the first light-transmitting display area F32 are opposite to the display box 109; the display box 109 has a first display structure 1091 and a second display structure 1092, the first display structure 1091 includes at least one of a first display portion 1091a, a second display portion 1091b and a third display portion 1091c, the first display portion 1091a is used to display the operating mode of the air conditioner 200 (for example, the operating mode of the air conditioner 200 includes at least one of a dehumidification mode and a defrost mode ), the second display portion 1091b is used to display the set temperature of the air conditioner 200, the third display portion 1091c is used to display the network information of the air conditioner 200, and the second display structure 1092 includes a fourth display portion 1092a, which is used to display the operation key information of the air conditioner 200 (for example, the operation key includes at least one of the air conditioner 200's power button, air volume adjustment key, air speed adjustment key, up and down air flow adjustment key, left and right air flow adjustment key, and one-button operation key). The first display structure 1091 is opposite to the first light-transmitting display area F32, and the second display structure 1092 is opposite to the second light-transmitting display area F33. As a result, at least one of the special operating mode (dehumidification mode, defrost mode, etc.), set temperature, and network information of the air conditioner 200 can be displayed more clearly through the fifth plate F3, allowing the user to obtain this information from a distance. The operation key information of the air conditioner 200 can be dimly displayed through the fifth plate F3, allowing the user to obtain this information by operating the air conditioner 200 at a close distance.

[0118] Optionally, the thickness of the second light-transmitting display area F33 gradually decreases from the main body area F31 toward the first light-transmitting display area F32, so that on the premise that the second light-transmitting display area F33 can display the corresponding information, the second light-transmitting display area F33 can realize the transition between the main body area F31 and the first light-transmitting display area F32, which is beneficial to make the stresses exerted on the first light-transmitting display area F32 and the main body area F31 transition evenly, reduce the risk of deformation caused by uneven stress on the fifth plate F3, and improve structural stability.

[0119] In some embodiments, as Figure 7 As shown, the air conditioner 200 also includes a remote control signal receiving device 110. The remote control signal receiving device 110 is opposite to the second light-transmitting display area F33. The remote control signal receiving device 110 does not occupy the first light-transmitting display area F32, making the area of ​​the first light-transmitting display area F32 larger. At the same time, the thickness of the part of the fifth plate F3 opposite to the remote control signal receiving device 110 is relatively small, which is beneficial to improving the signal receiving capability of the remote control signal receiving device 110 and improving the control convenience of the air conditioner 200.

[0120] In some embodiments, as Figure 13 and Figure 27 As shown, the inlet 101a includes a first inlet 101g, which is formed on the left and right sides of the housing 101 respectively. A first filtering structure 104 is provided at the first inlet 101g. The first filtering structure 104 can filter and purify the airflow flowing from the first inlet 101g to the housing 101; and / or Figure 11 、 Figure 12 and Figure 27 As shown, the inlet 101a includes a second inlet 101h, which is formed on the bottom side of the shell 101. A second filtering structure 108 is provided at the second inlet 101h. The second filtering structure 108 can filter and purify the airflow flowing from the second inlet 101h to the shell 101. The second inlet 101h is opposite to and spaced from the chassis 105 located on the lower side of the shell 101. In the up and down directions, the chassis 105 will block at least part of the second inlet 101h. An avoidance guide surface 105a is formed on the front side of the chassis 105. The avoidance guide surface 105a is recessed backward and extends from bottom to top toward the second inlet 101h. The setting of the avoidance guide surface 105a can free up a certain amount of air intake space for the second inlet 101h, thereby increasing the air intake volume.

[0121] Optionally, the second filter structure 108 is detachable, and the assembly and disassembly configuration of the second filter structure 108 can be the same as or different from that of the first filter structure 104. The avoidance guide surface 105a can be formed as a smooth curved surface. It is understood that when the inlet 101a includes the first inlet 101g but does not include the second inlet 101h, there are multiple inlets 101a; when the inlet 101a includes the second inlet 101g but does not include the first inlet 101g, there is at least one inlet 101a.

[0122] In some embodiments, the air conditioner 200 includes a shell 101, a top cover 106 and a chassis 105, the top cover 106 is connected to the top of the shell 101, the chassis 105 is connected to the bottom of the shell 101, the inlet 101a and the outlet 101b of the air conditioner 200 are both formed on the shell 101, and a heat exchanger 107 is provided in the shell 101, and the heat exchanger 107 is inclined at the air outlet side of the centrifugal fan 100.

[0123] Other structures and operations of the air conditioner 200 according to the embodiment of the present invention are well known to those skilled in the art and will not be described in detail here.

[0124] In addition, it should be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner unless there is any contradiction. In order to avoid unnecessary repetition, the present application will not further describe various possible combinations. In addition, the various different embodiments of the present application can also be arbitrarily combined, as long as they do not violate the concept of the present application, they should also be regarded as the content disclosed in the present application.

[0125] In the description of the present invention, it should be understood that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0126] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0127] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the illustrative use of the above terms does not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0128] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A centrifugal fan, characterized in that: include: A centrifugal volute, the centrifugal volute comprising a spiral section and a diffuser section, at least one of the two axial sides of the spiral section having an air inlet, a peripheral wall of the spiral section having a communication port, the diffuser section being connected to the communication port to form a volute tongue at a connection position between the spiral section and the diffuser section, the diffuser section having an air outlet at one end away from the spiral section, and the peripheral wall of the spiral section having a reference portion opposite to the volute tongue along a first direction; a centrifugal wind wheel rotatably disposed in the spiral section, In which, the distance between the central axis of the centrifugal wind wheel and the reference part in the first direction is x1, the minimum radial distance between the centrifugal wind wheel and the spiral segment is x2, the width of the connecting port in the second direction is x3, the width of the air outlet in the second direction is x4, the length of the diffusion section in the first direction is x5, 290mm≤x1≤310mm, 12mm≤x2≤20mm, 296mm≤x3≤316mm, 475mm≤x4≤495mm, 350mm≤x5≤370mm, and the second direction is perpendicular to the axial direction of the spiral segment and perpendicular to the first direction.

2. The centrifugal fan according to claim 1, characterized in that: 14mm≤x2≤16mm.

3. The centrifugal fan according to claim 1, characterized in that: The peripheral wall of the spiral section has a first flat plate portion and a second flat plate portion that are spaced apart from each other. The first flat plate portion and the second flat plate portion are respectively located on both sides of the centrifugal impeller in the second direction.

4. The centrifugal fan according to any one of claims 1 to 3, characterized in that: The centrifugal volute includes an end plate, a surrounding plate and a mounting plate. The end plate and the mounting plate are respectively arranged at the axial ends of the surrounding plate. The air inlet is formed on the end plate. The circumferential ends of the surrounding plate and the end plate form the air outlet. The end plate and the enclosure plate are integrally formed; and / or, A connecting flange extending radially outward along the spiral section is formed at one end of the enclosure plate facing the mounting plate, and the connecting flange includes a first flange and a second flange, the first flange is connected to the side of the spiral section away from the diffusion section, and is formed with a stop notch, a limiting buckle with a limited position that is matched with the stop notch is formed on the mounting plate, and the second flange is connected to the diffusion section, the volute tongue and the spiral section, and is formed with a connecting hole.

5. The centrifugal fan according to claim 4, characterized in that: The end plates and the enclosure plates are both foam pieces.

6. The centrifugal fan according to claim 4, characterized in that: The peripheral wall of the spiral section has a flat plate portion, which includes a first flat plate portion and a second flat plate portion arranged at intervals. The first flat plate portion and the second flat plate portion are respectively located on both sides of the centrifugal wind wheel in the second direction. The first flange and the second flange are respectively located on opposite sides of the flat plate portion, and in the second direction, the outer edge of the connecting flange is flush with the corresponding outer edge of the flat plate portion.

7. An air conditioner, characterized in that: The invention comprises a shell and a centrifugal fan according to any one of claims 1 to 6, wherein the shell is formed with an inlet and an outlet arranged at intervals, and the centrifugal fan is arranged in the shell and is communicated with the inlet and the outlet respectively.

8. The air conditioner according to claim 7, characterized in that The outlet includes a first outlet formed at the front side of the housing, and a plurality of second outlets formed at left and right sides of the housing, respectively. The air conditioner is configured to satisfy at least one of the following conditions: The first outlet is formed into a square opening, and the ratio of the width of the first outlet in the left-right direction to the height in the up-down direction is 5:

3. The opening area of ​​the first outlet is S, 0.17m 2 ≤S≤0.19m 2 ; A rotatable first air guide structure is provided at the first outlet, the first air guide structure comprising a first air guide plate and a second air guide plate spaced apart along the air flow direction, wherein the rotation axis of the first air guide plate and the rotation axis of the second air guide plate form a non-zero angle; The second outlet is located at the upper part of the shell, and each second outlet is respectively provided with a rotatable second air guide structure, the second air guide structure has a closed position and an air guiding position and includes a third air guide plate, a fourth air guide plate and a fifth air guide plate, the third air guide plate and the fourth air guide plate are arranged at intervals, and the fifth air guide plate is connected between the third air guide plate and the fourth air guide plate. In the closed position, the third air guide plate is arranged on the outside of the fourth air guide plate and closes the second outlet. In the air guiding position, the second air guide structure opens the second outlet and guides the airflow at the second outlet in a direction away from the other second outlet, and the fifth air guide plate is used to guide the airflow between the third air guide plate and the fourth air guide plate horizontally and / or obliquely.

9. The air conditioner according to claim 8, characterized in that When a rotatable first air guide structure is provided at the first outlet, the rotation axis of the first air guide plate is arranged horizontally, and the maximum upward opening angle of the first air guide plate is less than or equal to 128° and greater than or equal to 36°.

10. The air conditioner according to claim 8, characterized in that When each of the second outlets is provided with a rotatable second air guide structure, The distance between the third air guide plate and the fourth air guide plate decreases along the airflow direction; and / or, The second wind guide structure also includes a sixth wind guide plate and a first heat insulation member. The sixth wind guide plate is arranged on the side of the third wind guide plate away from the fourth wind guide plate, and a cavity is defined between the sixth wind guide plate and the third wind guide plate. The first heat insulation member is sealed and filled in the cavity.

11. The air conditioner according to any one of claims 7 to 10, characterized in that: The housing includes a front side panel component and a rear box component connected front and back, the centrifugal fan is fixed to the rear box component, the front side panel component includes an air inlet frame and an air outlet frame, the inlet is formed on the air inlet frame, the outlet is formed on the air outlet frame, the air inlet frame is arranged on the lower side of the air outlet frame and is opposite to the centrifugal fan front and back, The air inlet frame is an integrally formed part and includes a third plate and two fourth plates connected to the left and right ends of the third plate, the third plate and the fourth plate both contribute to defining the exterior surface of the air conditioner, and each of the fourth plates is formed with an inlet; and / or, The air outlet frame is an integrally formed part and includes a fifth plate and two sixth plates connected to the left and right ends of the fifth plate. The fifth plate and the sixth plate both contribute to defining the appearance of the air conditioner. An outlet is formed on the fifth plate and each of the sixth plates.

12. The air conditioner according to claim 11, characterized in that The outlet on the fifth plate is a first outlet, the outlet on the sixth plate is a second outlet, and the air outlet frame further includes a first extension wall, which is connected to a front edge of the second outlet and extends from the front edge of the second outlet toward the other second outlet and away from the fifth plate, so that a first cavity is defined between the first extension wall and the fifth plate. A rotatable first air guide plate is provided at the first outlet, and the left and right ends of the first air guide plate extend into the corresponding first cavity respectively.

13. The air conditioner according to claim 12, wherein: The air outlet frame further includes a second extension wall, which is connected to the rear edge of the second outlet and extends from the rear edge of the second outlet toward another second outlet and away from the fifth plate, so that a second cavity is defined between the second extension wall and the sixth plate, and a channel connected to the second outlet is defined between the first extension wall and the second extension wall. The air conditioner is configured to satisfy at least one of the following conditions: Condition A1: the angle between the side of the first extension wall facing the channel and the front-to-back direction is α1, and the angle between the side of the second extension wall facing the channel and the front-to-back direction is α2, 50°≤α1≤70°, 95°≤α2≤120°; Condition A2: The extension lines of the first extension wall and the second extension wall define a swept wind area upstream of the channel. At least one second wind deflector is provided in the swept wind area, the second wind deflector is located upstream of the first wind deflector, and the rotation axis of the second wind deflector is vertically arranged; Condition A3: a second thermal insulation member is provided in the first cavity; Condition A4: A third thermal insulation member is provided in the second cavity.

14. The air conditioner according to claim 13, wherein: Condition A1 also includes: A mating groove is formed at one end of the first extension wall connected to the sixth plate body and is recessed toward the fifth plate body. The mating groove has a limiting groove wall arranged toward the outside of the sixth plate body, and the limiting groove wall is used to limit the rotation of the second air guide structure provided at the second outlet. The angle between the side of the first extension wall facing away from the fifth plate body and the limiting groove wall is α3, and 100°≤α3≤140°; and / or, An included angle between a side surface of the second extension wall facing the channel and an outer surface of the sixth plate body is α4, and 60°≤α4≤85°.

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