Fan, fan assembly and air conditioner

Abstract

A fan, comprising: a volute (2), an outlet end (21) of which is configured to pass through a mounting hole (11) in a mounting plate (1) and be connected to the mounting plate, and comprises an outer side plate (22) and an inner side plate (23), the outer side plate being away from the central axis of the volute relative to the inner side plate in a radial direction; and at least one of a first limiting assembly (3) and a second limiting assembly (4), wherein the first limiting assembly is arranged on the outer side plate and is configured to abut against the mounting plate on two sides of the mounting plate so as to limit the mounting plate, and the second limiting assembly is arranged on the inner side plate and is configured to abut against the mounting plate on the two sides of the mounting plate so as to limit the mounting plate. The mounting plate is limited by means of the first limiting assembly and / or the second limiting assembly, which can alleviate the problem of the mounting plate being easily deformed at the mounting hole and thus allow the fan to be suitable for a lightweight mounting plate, and can enhance the deformation control over a moving component to avoid problems such as abnormal vibration. Further disclosed are a fan assembly and an air conditioner.

Description

Fans, fan components and air conditioners

[0001] This disclosure is based on and claims priority to an application with CN application number 202310805489.9 and filing date July 3, 2023. The disclosure content of the CN application is hereby introduced as a whole into this application. Technical Field

[0002] The present disclosure relates to the technical field of air conditioning, and in particular to a fan, a fan assembly and an air conditioner. Background Art

[0003] The main components of a ducted indoor unit are the heat exchanger and the fan. The heat exchanger exchanges heat with the environment, while the fan transports the heat exchanged airflow to the outside world, thereby regulating the room temperature. Therefore, the fan is an indispensable part of a ducted indoor unit. In some related technologies, the fan components include a fan mounting plate, volute, impellers, and motor. The volute is secured to the fan plate with screws, and the fan mounting plate is a thick, large, flat plate. While the thick structure of the fan mounting plate can enhance the vibration stability of the motor, it also comes with disadvantages such as increased weight and cost, reduced production efficiency, and is inconsistent with the trend of material reduction and energy conservation. To achieve a lightweight design for the fan mounting plate, the material thickness needs to be further reduced, which leads to the problem of easy deformation. The volute is generally made of injection molded material, and the hollow volute cannot be reinforced with additional ribs, so it is prone to deformation in its natural state. As the core component of the ducted unit, the fan assembly must ensure smooth movement.

[0004] Summary of the Invention

[0005] In one aspect of the present disclosure, there is provided a wind turbine comprising:

[0006] a volute, the outlet end of which is configured to pass through a mounting hole on a mounting plate and connected to the mounting plate, the outlet end comprising an outer plate and an inner plate, the outer plate being radially away from a central axis of the volute relative to the inner plate; and

[0007] At least one of the first limiting component and the second limiting component; wherein,

[0008] The first limiting assembly is provided on the outer plate, and the first limiting assembly is configured to abut against the mounting plate on both sides of the mounting plate to limit the mounting plate;

[0009] The second limiting assembly is provided on the inner side plate, and the second limiting assembly is configured to abut against the mounting plate at both sides of the mounting plate to limit the mounting plate.

[0010] In some embodiments, the first limiting assembly includes a first limiting plate. Along the air outlet direction of the outlet end, the first limiting plate is configured to be disposed on the upstream side of the mounting plate and abut against the mounting plate.

[0011] In some embodiments, the first limiting assembly further includes a first limiting member, which is configured to be disposed on the downstream side of the mounting plate and abut against the mounting plate.

[0012] In some embodiments, the first limiting member is constructed in a block shape, the first limiting member protrudes from the inner plate to the outer plate, and the protruding height of the first limiting member gradually decreases along the air outlet direction of the outlet end.

[0013] In some embodiments, the first limiting assembly includes at least two first limiting members spaced apart from each other.

[0014] In some embodiments, the first limiting assembly further includes a buckle, which is provided on the first limiting plate. A matching hole is provided on the mounting plate, and a portion of the buckle is configured to pass through the matching hole and abut against the downstream side of the mounting plate.

[0015] In some embodiments, there are two clips, which are arranged adjacent to each other. The clips include a connecting piece and an abutting portion. The connecting piece connects the first limiting plate and the abutting portion. The abutting portions of the two clips are configured to pass through the matching hole together and abut against the downstream side of the mounting plate. The connecting pieces of the two clips are configured to deform and move closer to each other during the process of the abutting portions passing through the matching hole.

[0016] In some embodiments, the abutment portion of one of the buckles extends in a direction away from the other buckle, and an extension dimension of the abutment portion gradually decreases along the air outlet direction of the outlet end.

[0017] In some embodiments, the second limiting assembly includes a second limiting plate and a second limiting member provided on the inner plate. Along the air outlet direction of the outlet end, the second limiting plate is configured to be provided on the upstream side of the mounting plate and abut against the mounting plate, and the second limiting member is configured to be provided on the downstream side of the mounting plate and abut against the mounting plate.

[0018] In some embodiments, the second limiting member is configured as a strip, and a lengthwise extension direction of the second limiting member is consistent with a lengthwise extension direction of an end face of the outlet end.

[0019] In some embodiments, the second limiting member protrudes from the outer plate to the inner plate, and a protruding height of the second limiting member first increases and then decreases along the air outlet direction of the outlet end.

[0020] In some embodiments, the outlet port further includes a left side plate and a right side plate that are arranged opposite to each other, and the left side plate and the right side plate are provided with connecting portions for connecting to the mounting plate.

[0021] In another aspect of the present disclosure, a fan assembly is provided, which includes a mounting plate and the above-mentioned fan, wherein the mounting plate is provided with a mounting hole allowing the outlet end of the volute to pass through.

[0022] In another aspect of the present disclosure, an air conditioner is provided, comprising the above-mentioned fan assembly.

[0023] Based on the above technical solution, the present disclosure has at least the following beneficial effects:

[0024] In some embodiments, the first limiting assembly and the second limiting assembly are respectively arranged on the outer plate and the inner plate of the outlet end of the volute. The first limiting assembly and the second limiting assembly can both abut against the mounting plate on the upstream and downstream sides of the mounting plate. The first limiting assembly and / or the second limiting assembly limit the mounting plate, which can alleviate the problem of easy deformation of the mounting plate at the mounting hole. It is suitable for lightweight mounting plates and can strengthen the deformation control of moving parts to avoid problems such as abnormal vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings described herein are used to provide a further understanding of the present disclosure and constitute a part of this application. The illustrative embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation of the present disclosure. In the drawings:

[0026] FIG1 is a schematic perspective structural diagram of a fan assembly according to some embodiments of the present disclosure from one viewing angle;

[0027] FIG2 is a schematic diagram of a three-dimensional structure of a volute provided in accordance with some embodiments of the present disclosure from one viewing angle;

[0028] FIG3 is a schematic front view of a volute according to some embodiments of the present disclosure;

[0029] FIG4 is a schematic diagram of a first position-limiting member provided according to some embodiments of the present disclosure;

[0030] FIG5 is a schematic diagram of a three-dimensional structure of a volute according to other embodiments of the present disclosure;

[0031] FIG6 is a schematic diagram of a buckle according to some embodiments of the present disclosure;

[0032] FIG7 is a schematic front view of a fan assembly according to some embodiments of the present disclosure;

[0033] FIG8 is a schematic diagram of the cooperation between the buckle and the matching hole according to some embodiments of the present disclosure;

[0034] FIG9 is a schematic diagram of a three-dimensional structure of a fan assembly from another perspective according to some embodiments of the present disclosure;

[0035] FIG10 is a schematic diagram of a three-dimensional structure of a volute provided in accordance with some embodiments of the present disclosure from another perspective;

[0036] FIG11 is a schematic diagram of a second limiting member provided according to some embodiments of the present disclosure. DETAILED DESCRIPTION

[0037] The following will be combined with the accompanying drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments. Obviously, the embodiments described are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present disclosure.

[0038] In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present disclosure.

[0039] Some embodiments of the present disclosure provide a fan, a fan assembly, and an air conditioner to alleviate the problem of easy deformation.

[0040] 1 to 11 are schematic structural diagrams of some embodiments of a wind turbine according to the present disclosure.

[0041] Referring to Figure 1, in some embodiments, the fan includes a volute 2, the outlet end 21 of the volute 2 is configured to pass through the mounting hole 11 on the mounting plate 1 and be connected to the mounting plate 1, and the outlet end 21 includes an outer plate 22 and an inner plate 23, and the outer plate 22 is radially away from the central axis of the volute 2 relative to the inner plate 23.

[0042] The fan further includes at least one of a first limiting assembly 3 and a second limiting assembly 4 .

[0043] The first limiting assembly 3 is provided on the outer plate 22 and is configured to abut against the mounting plate 1 on both sides thereof to limit the mounting plate 1. The "two sides" herein refer to the upstream and downstream sides of the mounting plate 1 along the air outlet direction of the outlet end 21.

[0044] In the embodiment disclosed herein, the first limiting component 3 is arranged on the outer plate 22 of the outlet end 21 of the volute 2. The first limiting component 3 abuts against the mounting plate 1 on the upstream and downstream sides of the mounting plate 1 to limit the mounting plate 1. This can alleviate the problem that the mounting plate 1 is easily deformed at the mounting hole 11. It is suitable for a lightweight mounting plate 1, can strengthen the deformation control of the moving parts, and avoid problems such as abnormal vibration.

[0045] In some embodiments, the mounting plate 1 is not limited to being provided with one mounting hole 11 , and may be provided with two mounting holes 11 , or more than two mounting holes 11 , and each mounting hole 11 corresponds to installing a volute 2 .

[0046] In some embodiments, the outlet end 21 further includes a left side plate 24 and a right side plate 25 that are arranged opposite to each other. The left side plate 24 and the right side plate 25 are provided with a connecting portion 26 for connecting to the mounting plate 1 .

[0047] In the embodiment shown in Figure 1 , the outer plate 22 is located above the inner plate 23. The outlet end 21 further includes a left plate 24 and a right plate 25 disposed between the outer plate 22 and the inner plate 23. The outer plate 22, the inner plate 23, the left plate 24, and the right plate 25 collectively form the outlet end 21 of the volute 2. Optionally, the left plate 24 and the right plate 25 are symmetrically disposed.

[0048] In some embodiments, the outer plate 22 has a larger area extending out of the mounting hole 11 than the inner plate 23 .

[0049] In some embodiments, the connection parts 26 on the left side plate 24 and the right side plate 25 of the volute 2 are respectively connected and fixed to the mounting plate 1 by connecting members such as bolts, screws, pins or buckles.

[0050] In the disclosed embodiment, the first limiting component 3 abuts against the mounting plate 1 on both sides of the mounting plate 1 , where “both sides” refer to: the upstream side and the downstream side of the mounting plate 1 along the air outlet direction of the outlet end 21 .

[0051] In the embodiment shown in FIG. 1 , the first limiting assembly 3 specifically abuts against the upstream side and the downstream side of the upper frame of the mounting hole 11 .

[0052] Since the upper frame of the mounting hole 11 is narrow, the first limiting component 3 abuts against the upstream and downstream sides of the upper frame of the mounting hole 11, which can better fix the limiting mounting plate 1 and the volute 2, alleviate the problem of easy deformation of the mounting plate 1, and improve the relative stability of the mounting plate 1 and the volute 2, and alleviate the noise generated by mutual vibration and collision.

[0053] 2 , in some embodiments, the first limiting assembly 3 includes a first limiting plate 31 . Along the air outlet direction of the outlet end 21 , the first limiting plate 31 is configured to be disposed on the upstream side of the mounting plate 1 and abut against the mounting plate 1 .

[0054] In some embodiments, the length extension direction of the first limit plate 31 is consistent with the length direction of the end face of the outlet end 21, and it can abut against the mounting plate 1 over as large an area as possible, thereby reducing the probability of relative movement between the mounting plate 1 and the volute 2 and alleviating the problem of easy deformation of the mounting plate 1.

[0055] In some embodiments, a plurality of reinforcing ribs are further provided on the upstream side of the first limiting plate 31 , the plurality of reinforcing ribs connecting the volute 2 and the first limiting plate 31 , and the plurality of reinforcing ribs are spaced apart along the length direction of the end face of the outlet end 21 to improve the strength of the volute 2 .

[0056] In some embodiments, the first limiting assembly 3 further includes a first limiting member 32 , which is disposed on the outer plate 22 . The first limiting member 32 is configured to be disposed on the downstream side of the mounting plate 1 and abut against the mounting plate 1 .

[0057] The first limiting member 32 cooperates with the first limiting plate 31 to clamp the mounting plate 1 , which can effectively alleviate the problem that the mounting plate 1 is prone to deformation.

[0058] 3 and 4 , in some embodiments, the first position-limiting member 32 is constructed in a block shape, the first position-limiting member 32 protrudes from the inner panel 23 to the outer panel 22 , and the protruding height of the first position-limiting member 32 gradually decreases along the air outlet direction of the outlet end 21 .

[0059] The first limiting member 32 is inclined on the side away from the outer plate 22, and the protruding height of the first limiting member 32 gradually decreases along the air outlet direction of the outlet end 21. The sloped structure is conducive to the mounting plate 1 approaching the outlet end 21 from the side away from the outlet end 21 of the volute 2, and passing the outlet end 21 through the mounting hole 11 to realize the installation guide of the outer plate 22 of the volute 2 and the mounting plate 1, and the mounting plate 1 is located between the first limiting plate 31 and the first limiting member 32. The first limiting member 32 is a sloped structure, which can increase the contact area between the first limiting member 32 and the mounting plate 1, improve the fit between the first limiting plate 31 of the volute 2 and the mounting plate 1, and avoid the volute 2 and the mounting plate 1 from vibrating and colliding with each other to generate noise.

[0060] 4 , in some embodiments, the protrusion height of the upstream side of the first limiting member 32 is higher than the frame of the mounting hole 11 of the mounting plate 1 , and the upstream side of the first limiting member 32 clamps the outer edge of the frame of the mounting hole 11 .

[0061] Referring to Figure 4, in some embodiments, the first limiting member 32 is constructed as a semi-enclosed slope limiting structure, and the opening direction of the semi-enclosed slope is consistent with the air outlet direction of the outlet end 21. The slope structure serves as a guide to facilitate the assembly guide of the volute 2 and the mounting plate 1, and the upstream end of the slope along the air outlet direction of the outlet end 21 is at a high position, which can effectively be stuck in the matching position of the mounting plate 1. The matching position of the mounting plate 1 is the frame of the mounting hole 11, and the upstream end of the slope will buckle the outer edge of the frame of the mounting plate 1, effectively alleviating the deformation problem of the mounting plate 1. The upstream end of the slope along the air outlet direction of the outlet end 21 is at a high position, which can increase the fitting area with the mounting plate 1 and avoid the vibration and collision between the volute 2 and the mounting plate 1 to generate noise.

[0062] In some embodiments, the first limiting assembly 3 includes at least two first limiting members 32 spaced apart from each other.

[0063] The length extension direction of the first limiting plate 31 is consistent with the length extension direction of the end surface of the outlet end 21 .

[0064] The arrangement direction of the multiple first limiting members 32 is consistent with the length extension direction of the end face of the outlet end 21. The multiple first limiting plates 31 cooperate with the first limiting plates 31 to increase the fitting area with the mounting plate 1, improve the stability of the mounting plate 1 and the volute 2, and effectively alleviate the problem of easy deformation of the mounting plate 1.

[0065] Referring to Figures 5, 7 and 8, in other embodiments, the first limiting assembly 3 also includes a clip 33, which is provided on the first limiting plate 31, and a matching hole 12 is provided on the mounting plate 1. Part of the clip 33 is configured to pass through the matching hole 12 and abut against the downstream side of the mounting plate 1.

[0066] The buckle 33 passes through the matching hole 12 and abuts against the downstream side of the mounting plate 1. The buckle 33 cooperates with the first limiting plate 31 to clamp the mounting plate 1, which can strengthen the limiting of the volute 2 and the mounting plate 1 and alleviate the problem of easy deformation of the mounting plate 1.

[0067] With reference to FIG6 and FIG8 , in some embodiments, there are two clips 33 , which are adjacently disposed. The clips 33 include a connecting member 331 and an abutting portion 332 . The connecting member 331 connects the first limiting plate 31 and the abutting portion 332 . The abutting portions 332 of the two clips 33 are configured to pass through the mating hole 12 together and abut against the downstream side of the mounting plate 1 . The connecting members 331 of the two clips 33 are configured to deform and move closer together during the process of the abutting portions 332 passing through the mating hole 12 . The connecting members 331 of the two clips 33 are configured to recover their deformation after the abutting portions 332 pass through the mating hole 12 .

[0068] The buckle 33 of the first limiting component 3 adopts a double-buckle deformation limiting method, which can further strengthen the limiting of the volute 2 and the mounting plate 1 and alleviate the problem that the mounting plate 1 is easily deformed.

[0069] In some embodiments, the two buckles 33 are symmetrically arranged.

[0070] 6 , in some embodiments, the abutting portion 332 of one buckle 33 extends in a direction away from the other buckle 33 , and the extension dimension of the abutting portion 332 gradually decreases along the air outlet direction of the outlet end 21 .

[0071] In some embodiments, the buckle 33 uses a reverse double buckle as an effective limit. The matching position of the mounting plate 1 is provided with a matching hole 12. When the abutting portions 332 of the two buckles 33 pass through the matching hole 12 together, the connecting pieces 331 of the two buckles 33 are deformed and moved closer to each other. The inclined surface structure of the abutting portion 332 is used to guide the abutting portion 332 through the matching hole 12, making it easier for the abutting portion 332 to pass through the matching hole 12. When the abutting portions 332 of the two buckles 33 completely pass through the matching hole 12, the deformation of the connecting pieces 331 of the two buckles 33 returns to normal. The abutting portions 332 of the two buckles 33 abut against the downstream side of the mounting plate 1, and the first limiting plate 31 abuts against the upstream side of the mounting plate 1, completing the limiting fixation of the volute 2 and the mounting plate 1.

[0072] 9 , in some embodiments, the second limiting assembly 4 is provided on the inner plate 23. The second limiting assembly 4 is configured to be provided on both sides of the mounting plate 1 and to abut against the mounting plate 1 to limit the mounting plate 1. The "both sides" herein refer to the upstream side and the downstream side of the mounting plate 1.

[0073] The volute 2 is limited at the outer plate 22 by the first limiting component 3 and at the inner plate 23 by the second limiting component 4, which can improve the limiting and fixing effect of the volute 2 and the mounting plate 1, reduce the vibration and collision between the volute 2 and the mounting plate 1, reduce noise, and alleviate the deformation problem of the mounting plate 1.

[0074] Referring to Figure 10, in some embodiments, the second limiting assembly 4 includes a second limiting plate 41 and a second limiting member 42 provided on the inner plate 23. Along the air outlet direction of the outlet end 21, the second limiting plate 41 is configured to be provided on the upstream side of the mounting plate 1 and abut against the mounting plate 1, and the second limiting member 42 is configured to be provided on the downstream side of the mounting plate 1 and abut against the mounting plate 1.

[0075] The second limiting plate 41 and the second limiting member 42 cooperate to clamp the mounting plate 1, which is beneficial to the limiting fixation of the volute 2 and the mounting plate 1, slowing down the vibration and collision between the volute 2 and the mounting plate 1, reducing noise, and alleviating the deformation problem of the mounting plate 1.

[0076] In some embodiments, the length extension direction of the second limiting plate 41 is consistent with the length extension direction of the end surface of the outlet end 21 .

[0077] 11 , in some embodiments, the second limiting member 42 is configured as a strip, and a lengthwise extension direction of the second limiting member 42 is consistent with a lengthwise extension direction of an end surface of the outlet end 21 .

[0078] The second limiting member 42 is constructed in a strip shape, and the second limiting plate 41 and the second limiting member 42 cooperate to clamp the mounting plate 1, which can increase the fitting area with the mounting plate 1, improve the limiting and fixing effect of the volute 2 and the mounting plate 1, slow down the vibration and collision between the volute 2 and the mounting plate 1, reduce noise, and alleviate the deformation problem of the mounting plate 1.

[0079] 11 , in some embodiments, the second limiting member 42 protrudes from the outer plate 22 to the inner plate 23 , and the protruding height of the second limiting member 42 first increases and then decreases along the air outlet direction of the outlet end 21 .

[0080] In some embodiments, the cross-section of the second limiting member 42 is triangular.

[0081] The second limiting member 42 adopts a long protrusion limiting structure with a triangular cross-section. The entire limiting structure is conducive to improving the strength and integrity of the volute, and the triangular protrusion also serves as an installation guide, facilitating the assembly of the inner plate 23 of the volute 2.

[0082] In some embodiments, the fan further includes a plurality of reinforcing ribs provided on the second limiting plate 41 , and the plurality of reinforcing ribs are further connected to the volute 2 to improve the structural strength of the volute 2 .

[0083] In some embodiments, the installation process of the volute 2 and the mounting plate 1 is as follows:

[0084] First, extend the outer plate 22 of the outlet end 21 of the volute 1 into the mounting hole 11 on the mounting plate 1, and set the corresponding frame of the mounting hole 11 between the first limiting plate 31 and the first limiting member 32, or pass part of the buckle 33 on the first limiting plate 31 through the matching hole 12 on the corresponding frame of the mounting hole 11 to achieve the connection limitation of the outer plate 22 of the volute 1 and the mounting plate 1.

[0085] Then extend the inner plate 21 of the outlet end 21 of the volute 1 into the mounting hole 11 on the mounting plate 1. Since the second limiting member 42 is strip-shaped and has a triangular cross-section, it can guide the assembly of the mounting plate 1 and the inner plate 23 of the volute 1. After the installation is completed, the triangular cross-sectional structure of the second limiting member 42 can prevent the volute 2 from detaching from the mounting plate 1.

[0086] Since the lower edge of the mounting plate 1 is a flat shape, a long raised limiter is provided on the inner side plate 23 of the volute 2, which can effectively control the deformation of the lower edge of the mounting plate 1 and clamp the lower edge of the mounting plate 1 on the upstream side of the triangular protrusion, thereby preventing the lower edge of the mounting plate 1 from falling out.

[0087] 9 , in some embodiments, the fan further includes blades 5, which are disposed in the volute 2. The volute 2 functions to guide the airflow generated by the blades 5 to the outlet end 21 of the volute 2 and discharge the air through the outlet end 21.

[0088] 9 , in some embodiments, the fan further includes a motor 6 , which is disposed on the mounting plate 1 and is drivingly connected to the fan blades 5 to provide power for driving the fan blades 5 to rotate.

[0089] 9 , in some embodiments, two mounting holes 11 are provided on the mounting plate 1 of the fan, each mounting hole 11 corresponds to a volute 2, a motor 6 is provided between the two mounting holes 11, and the motor 6 drives the fan blades 5 connected to the volutes 2 on both sides.

[0090] Some embodiments further provide a fan assembly, which includes a mounting plate 1 and the fan of the above embodiment. The mounting plate 1 is provided with a mounting hole 11 allowing the outlet end 21 of the volute 2 to pass through.

[0091] Some embodiments further provide an air conditioner comprising the above-mentioned fan assembly.

[0092] In some embodiments, the air conditioner includes a ducted unit.

[0093] Based on the above-mentioned embodiments of the present disclosure, in the absence of explicit negation or conflict, the technical features of one embodiment may be beneficially combined with one or more other embodiments.

[0094] Although some specific embodiments of the present disclosure have been described in detail through examples, those skilled in the art will understand that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. Those skilled in the art will understand that the above embodiments may be modified or some technical features may be replaced with equivalents without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A fan, comprising: A volute (2), wherein an outlet end (21) is configured to pass through a mounting hole (11) on a mounting plate (1) and is connected to the mounting plate (1), wherein the outlet end (21) comprises an outer plate (22) and an inner plate (23), wherein the outer plate (22) is radially away from a central axis of the volute (2) relative to the inner plate (23); and At least one of the first limiting component (3) and the second limiting component (4); wherein, The first limiting assembly (3) is arranged on the outer plate (22), and the first limiting assembly (3) is configured to abut against the mounting plate (1) on both sides of the mounting plate (1) to limit the mounting plate (1); The second limiting assembly (4) is provided on the inner plate (23), and the second limiting assembly (4) is configured to abut against the mounting plate (1) on both sides of the mounting plate (1) to limit the mounting plate (1).

2. The fan according to claim 1, wherein the first limiting assembly (3) comprises a first limiting plate (31), and along the air outlet direction of the outlet end (21), the first limiting plate (31) is configured to be arranged on the upstream side of the mounting plate (1) and abut against the mounting plate (1).

3. The fan according to claim 1 or 2, wherein the first limiting assembly (3) further comprises a first limiting member (32), the first limiting member (32) being configured to be disposed on the downstream side of the mounting plate (1) and abutting against the mounting plate (1).

4. The fan as claimed in claim 3, wherein the first limit member (32) is constructed in a block shape, the first limit member (32) protrudes in the direction from the inner plate (23) to the outer plate (22), and the protruding height of the first limit member (32) gradually decreases along the air outlet direction of the outlet end (21).

5. The wind turbine according to claim 3 or 4, wherein the first limiting assembly (3) comprises at least two first limiting members (32) arranged at intervals.

6. The fan as claimed in claim 2, wherein the first limiting assembly (3) further comprises a buckle (33), the buckle (33) being arranged on the first limiting plate (31), the mounting plate (1) being provided with a matching hole (12), and a part of the buckle (33) being configured to pass through the matching hole (12) and abut against the downstream side of the mounting plate (1).

7. The fan according to claim 6, wherein the number of the clips (33) is two, and the two clips (33) are arranged adjacent to each other, and the clips (33) include a connecting piece (331) and an abutting portion (332), and the connecting piece (331) connects the first limiting plate (31) and the abutting portion (332), and the abutting portions (332) of the two clips (33) are configured to pass through the matching hole (12) together and abut against the downstream side of the mounting plate (1), and the connecting pieces (331) of the two clips (33) are configured to deform and move closer to each other during the process of the abutting portion (332) passing through the matching hole (12).

8. The fan according to claim 7, wherein: The abutment portion (332) of one of the two buckles (33) extends in a direction away from the other buckle (33), and the extension dimension of the abutment portion (332) gradually decreases along the air outlet direction of the outlet end (21).

9. A fan as described in any one of claims 1 to 8, wherein the second limiting assembly (4) includes a second limiting plate (41) and a second limiting member (42) provided on the inner plate (23), and along the air outlet direction of the outlet end (21), the second limiting plate (41) is configured to be provided on the upstream side of the mounting plate (1) and abut against the mounting plate (1), and the second limiting member (42) is configured to be provided on the downstream side of the mounting plate (1) and abut against the mounting plate (1).

10. The fan according to claim 9, wherein the second limiting member (42) is constructed in a strip shape, and a length extension direction of the second limiting member (42) is consistent with a length extension direction of an end surface of the outlet end (21).

11. A fan as described in claim 9 or 10, wherein the second limit member (42) protrudes in the direction from the outer plate (22) to the inner plate (23), and the protruding height of the second limit member (42) first increases and then decreases along the air outlet direction of the outlet end (21).

12. The fan according to any one of claims 1 to 11, wherein the outlet end (21) further comprises a left side plate (24) and a right side plate (25) arranged opposite to each other, and the left side plate (24) and the right side plate (25) are provided with a connecting portion (26) for connecting to the mounting plate (1).

13. A fan assembly, comprising a mounting plate (1) and a fan according to any one of claims 1 to 12, wherein the mounting plate (1) is provided with a mounting hole (11) allowing the outlet end (21) of the volute (2) to pass through.

14. An air conditioner comprising the fan assembly according to claim 13.

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