CN116951570A

CN116951570A - Fan assembly, air conditioner and air conditioning system

Info

Publication number: CN116951570A
Application number: CN202311096380.9A
Authority: CN
Inventors: 魏彦艳; 王千千; 钟定菡; 夏光辉; 林金煌; 何振健
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2023-08-28
Filing date: 2023-08-28
Publication date: 2023-10-27

Abstract

The application provides a fan assembly, an air conditioner and an air conditioning system, wherein the fan assembly comprises an air duct volute, a motor bracket and double-suction centrifugal fan blades arranged in the air duct volute; the air duct volute is provided with a first air inlet and a second air inlet which are arranged corresponding to the air suction ports of the double-suction centrifugal fan blades; the motor bracket is arranged in the first air inlet and is connected with a motor of the double-suction centrifugal fan blade; wherein, the air inlet area ratio of the air inlet area S1 of the first air inlet and the air inlet area S2 of the second air inlet satisfies:according to the application, through reasonably arranging the air inlet areas at the two sides of the air duct volute, the pressure difference generated in the air duct can be reduced, and the mutual impact of air flows is reduced, so that the air quantity of a fan system is improved.

Description

Fan assembly, air conditioner and air conditioning system

Technical Field

The application belongs to the technical field of air conditioners, and particularly relates to a fan assembly, an air conditioner and an air conditioning system.

Background

The distributed air supply air conditioner uses a unique air outlet mode, and the upper and lower air outlet air conditioners are used for shower refrigeration and carpet type heating, so that the air conditioner has high acceptance in the air conditioner market. However, the prior air outlet technology has higher cost and a certain degree of immaturity, thus leading to lower market share, therefore, a cost reduction technology for the distributed air supply platform is needed to reduce the cost of the whole machine and realize the bottleneck breakthrough of the related technology. Because the double-suction centrifugal fan has the characteristics of larger flow coefficient and good noise tone quality, the double-suction centrifugal fan can be adopted in the distributed air supply air conditioner so as to improve the air supply quantity of the fan, reduce the noise of a fan system and realize the aims of reducing the cost and enhancing the efficiency.

Based on the distributed air supply technology, a brand new double-suction bidirectional single-centrifugal fan system is established, a volute air duct component is vertically placed, double-suction single-centrifugal fan blades are laterally installed inside a volute air duct, rear side air intake is achieved, air suction is achieved on two sides, air supply is achieved in an up-down distributed mode, air supply comfortableness and single-centrifugal fan system performance are improved, and distributed air supply technology cost is reduced. However, the single centrifugal double suction fan air duct needs to realize the modes of air inlet at two sides and air supply up and down, and the fan blade and the motor need to be arranged in the air duct volute, so that a motor supporting structure needs to be designed. The motor support structure is designed at the air inlet of the volute, so the design of the motor support structure is particularly important for the design of an air duct, the performance of an air conditioner, the quality of noise and the like. Because the double-suction bidirectional fan is provided with air inlets at two sides, the flow field is disturbed due to uneven air inlet of the fan blades, after the air flows at the air inlets at two sides are converged in the air duct, the air flows mutually impact, so that the air quantity of the fan system is reduced, the pneumatic noise can be easily excited, and the user experience is influenced.

Disclosure of Invention

The application provides a fan assembly, an air conditioner and an air conditioning system, wherein the pressure difference generated in an air duct can be reduced by reasonably arranging the air inlet areas at two sides of a volute of the air duct, and the mutual impact of air flows is reduced, so that the air quantity of the fan system is improved.

The application provides a fan assembly, an air conditioner and an air conditioning system, which comprise an air duct volute, a motor bracket and double-suction centrifugal fan blades arranged in the air duct volute; the air duct volute is provided with a first air inlet and a second air inlet which are arranged corresponding to the air suction ports of the double-suction centrifugal fan blades; the motor bracket is arranged in the first air inlet and is connected with a motor of the double-suction centrifugal fan blade; wherein, the air inlet area ratio of the air inlet area S1 of the first air inlet and the air inlet area S2 of the second air inlet satisfies:

in some embodiments, the motor support comprises a support center ring and a plurality of support ribs arranged along the support center ring array, and one end of the plurality of support ribs away from the support center ring is connected with the air duct volute.

In some embodiments, the number of stent ribs is 3 or 4.

In some embodiments, a plurality of first support plates are disposed on the air duct volute proximate to the motor support.

In some embodiments, the motor support is provided with a second support plate, and the distance between the second support plate and the center of the center ring of the support is 35-45 mm.

In some embodiments, the motor support has a central mounting position, the central mounting position has a mounting angle relative to the circumference of the first air inlet, and the angle of the mounting angle is adjusted to be within a range of-30 ° to 30 °.

In some embodiments, the air duct volute is vertically arranged, the vertical direction of the motor support and the air duct volute has an air duct included angle θ, and the air duct included angle θ satisfies: θ is more than or equal to 5 degrees and less than or equal to 15 degrees.

In some embodiments, the air duct volute has a fan blade mounting cavity and a plurality of air outlet air ducts in communication with the fan blade mounting cavity.

In some embodiments, the plurality of air outlet air ducts includes a first air outlet air duct and a second air outlet air duct, the first air outlet air duct and the second air outlet air duct having opposite orientations of the air outlets.

In some embodiments, the air duct volute comprises a volute body and a volute cover body which are mutually buckled and connected, wherein the volute body is provided with a first air inlet, and the volute cover body is provided with a second air inlet.

An air conditioner comprises a heat exchanger, a third air inlet and the fan assembly, wherein the third air inlet faces the heat exchanger.

An air conditioning system comprises an air conditioner, wherein the air conditioner is the air conditioner.

The fan assembly, the air conditioner and the air conditioning system provided by the application have the following beneficial effects:

the motor support is arranged in the first air inlet and used for supporting and fixing the motor, and the first air inlet and the second air inlet are respectively used for air inlet in the rotating process of the double-suction centrifugal fan blade, so that airflow is generated in the air duct volute. Considering that the motor bracket is arranged in the first air inlet, the air inlet quantity and the flow velocity of the first air inlet can be influenced, and when the air inlet area S1 of the first air inlet and the air inlet area S2 of the second air inlet are in proportion:when the area ratio in the range is smaller, the difference of the flow rates is smaller, the uniformity of the air inlet flow fields at the two sides of the air duct volute is improved, so that after the airflows at the two sides are converged in the air duct volute, the pressure difference between the airflows is small, the impact force between the airflows is also reduced, the air quantity of a fan system can be improved, and the axial force at the two sides of the air duct volute can be kept balanced.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It will be apparent to those skilled in the art from this disclosure that the drawings described below are merely exemplary and that other embodiments may be derived from the drawings provided without undue effort.

The structures, proportions, sizes, etc. shown in the present specification are shown only for the purposes of illustration and description, and are not intended to limit the scope of the application, which is defined by the claims, so that any structural modifications, changes in proportions, or adjustments of sizes, which do not affect the efficacy or the achievement of the present application, should fall within the ambit of the technical disclosure.

FIG. 1 is a schematic diagram of a fan assembly according to an embodiment of the present application;

FIG. 2 is an exploded view of a fan assembly according to an embodiment of the present application;

FIG. 3 is a schematic view of the structure of a volute body according to an embodiment of the present application;

FIG. 4 is a schematic view of a housing cover according to an embodiment of the present application;

FIG. 5 is a graph showing the comparison of pressure distribution at different angles of a motor bracket according to an embodiment of the present application;

FIG. 6 is a cloud chart of pressure distribution at the volute tongue when the motor bracket of the embodiment of the application is at different angles;

FIG. 7 is a graph showing the flow velocity distribution of the air inlet on both sides according to the embodiment of the present application;

FIG. 8 is an enlarged view of FIG. 1 at A;

FIG. 9 is a schematic view showing the distribution of support plates according to an embodiment of the present application;

FIG. 10 is a schematic diagram of an included angle of an air duct according to an embodiment of the present application;

FIG. 11 is a graph of wind speed distribution versus cloud for a heat exchanger according to an embodiment of the present application;

fig. 12 is a schematic structural view of an air conditioner according to an embodiment of the present application.

The reference numerals are expressed as:

1-an air duct volute; 101-a volute body; 102-a volute cover; 2-double suction centrifugal fan blades; 301-a first air inlet; 302-a second air inlet; 303-a third air inlet; 4-a motor bracket; 401-a stent centering ring; 402-bracket ribs; 5-a motor; 6-a first support plate; 701-a first air outlet duct; 702-a second air outlet duct; 8-a heat exchanger; 9-a guide ring; 10-a second support plate.

Detailed Description

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

It should be understood that the term "and/or" as used herein is merely one relationship describing the association of the associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

In the description of the present application, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present application; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present application.

Referring to fig. 1 and 2 in combination, according to an embodiment of the present application, there is provided a fan assembly including a wind tunnel scroll 1, a motor bracket 4, and a double suction centrifugal fan blade 2 disposed in the wind tunnel scroll 1; the air duct volute 1 is provided with a first air inlet 301 and a second air inlet 302 which are arranged corresponding to the air suction ports of the double-suction centrifugal fan blades 2; the motor bracket 4 is arranged in the first air inlet 301 and is connected with the motor 5 of the double-suction centrifugal fan blade 2; wherein, the air inlet area ratio of the air inlet area S1 of the first air inlet 301 to the air inlet area S2 of the second air inlet 302 satisfies:

in this embodiment, the motor bracket 4 is disposed in the first air inlet 301, the motor bracket 4 is used for supporting and fixing the motor 5, and in the process of rotating the double-suction centrifugal fan blade 2, the first air inlet 301 and the second air inlet 302 are respectively used for air intake, so that airflow is generated in the air duct volute 1. Considering that the motor bracket 4 is disposed in the first air inlet 301, the air intake and the flow rate of the first air inlet 301 are affected, when the air intake area ratio of the air intake area S1 of the first air inlet 301 to the air intake area S2 of the second air inlet 302 is satisfied:when the area ratio in the range is smaller, the difference of the flow rates is smaller, the uniformity of the air inlet flow fields at the two sides of the air duct volute 1 is improved, so that after the airflows at the two sides are converged in the air duct volute 1, the pressure difference between the airflows is small, the impact force between the airflows is also reduced, the air quantity of a fan system can be improved, and the axial forces at the two sides of the air duct volute 1 can be kept balanced. Referring to FIG. 7, the air volume attenuation is larger than 30m with the area ratio smaller than 0.55 ³ And/h, the area ratio is more than 0.8, and the air inlet flows at two sides are disordered.

Referring to fig. 3 and 4 in combination, the air duct volute 1 has a fan blade installation cavity and a plurality of air outlet air ducts communicated with the fan blade installation cavity, and double-suction single-centrifugal fan blades are laterally arranged in the fan blade installation cavity.

Specifically, the plurality of air outlet channels includes a first air outlet channel 701 and a second air outlet channel 702, and the directions of the air outlets of the first air outlet channel 701 and the second air outlet channel 702 are opposite. The air duct volute 1 is vertically arranged, the first air outlet air duct 701 is arranged above the second air outlet air duct 702, the first air outlet air duct 701 is provided with an upper air outlet, and the second air outlet air duct 702 is provided with a lower air outlet, so that air inlet at two sides and air supply in an up-down distributed mode are realized, and the comfort of a user is improved. In other embodiments, on the premise of meeting the use requirement, the air outlet directions of the first air outlet duct 701 and the second air outlet duct 702 may be interchanged, the first air outlet duct 701 and the second air outlet duct 702 may also be arranged in parallel, and the same side may be used for air outlet, or only the first air outlet duct 701 or the second air outlet duct 702 may be arranged.

In this embodiment, the air duct volute 1 includes a volute body 101 and a volute cover 102 that are fastened to each other, where the volute body 101 is provided with a first air inlet 301, and the volute cover 102 is provided with a second air inlet 302.

Specifically, the volute body 101 and the volute cover 102 both comprise a frame body and a guide ring 9, a first air inlet 301 is formed in the guide ring 9 of the volute body 101, and a second air inlet 302 is formed in the guide wind ring of the volute cover 102. After the volute body 101 and the volute cover 102 are mutually buckled and connected, a first air outlet duct 701 is formed above the volute body 101 and the volute cover 102, a second air outlet duct 702 is formed below the volute body 101 and the volute cover 102, and two ends of the volute body 101 and the volute cover 102 are of asymmetric structures.

Referring to fig. 3, the motor support 4 is of an inverted Y shape, the motor support 4 includes a support center ring 401 and a plurality of support ribs 402 arranged along the support center ring 401 in an array, one end of the plurality of support ribs 402 away from the support center ring 401 is connected with the guide ring 9 of the volute body 101, and the motor support 4 and the volute body 101 can be integrally formed in consideration of mold stripping and cost.

In particular, a stentThe number of ribs 402 is 3 or 4, through theoretical analysis double-suction bidirectional fan wind channel flow field, the fan wind channel both sides import area ratio of reasonable in design, under the circumstances of guaranteeing to satisfy whole wind channel spiral case 1 intensity, the number of support ribs 402 is 3 or 4, can ensure that wind channel spiral case 1 has certain intensity, and motor support 4 also satisfies the support intensity demand to motor 5, and then can improve both sides air inlet flow field homogeneity, promotes double-suction single centrifugal fan system amount of wind. When the number of the bracket ribs 402 is less than 3, the cantilever arms Liang Guochang of the two bracket ribs 402 are not strong enough, and the bracket ribs 402 are easy to break; the excessive number of the support ribs 402 can obstruct air inlet, cause flow field disorder and excite aerodynamic noise, and the air quantity is reduced by about 20m compared with three air quantity when the number of the ribs is four through experimental test ³ And/h, in an acceptable range, but when the number of the ribs is five, the air quantity is reduced by 50m ³ And the number of the air quantity is more per hour, and the air quantity loss is serious.

Referring to fig. 5 in combination, the motor bracket 4 has a central installation position, and the central installation position has an installation included angle with respect to the circumferential direction of the first air inlet 301, and the angle adjustment range of the installation included angle is-30 ° to 30 °.

Specifically, when the number of the support ribs 402 is 3, the included angle between the support ribs 402 is 120 °, where, with reference to one support rib 402, the installation included angle shown in fig. 5 (b) is 0 °, and the support ribs 402 are located at the central installation position; the bracket ribs 402 rotate clockwise, the installation angle shown in fig. 5 (c) is 30 degrees, and the installation angle shown in fig. 5 (d) is 60 degrees; the bracket ribs 402 rotate counterclockwise and the installation angle shown in fig. 5 (a) is-30 °.

In this embodiment, when the ribs 402 of each bracket are disposed at different positions, different influences are generated on the air intake volume and the air intake flow velocity of the first air inlet 301, and then, different degrees of noise are excited at the volute tongue of the air duct volute 1. When the angle adjustment range of the installation included angle is-30 degrees, as shown in the figure 5, the pressure difference value at the darker position of the color distribution in the figure is larger; referring to fig. 6 (a), the installation included angle is 60 °, the whiter color at the volute tongue is the larger the pressure, the more mottled the color, the double excitation sources exist at the volute tongue when the installation included angle is 60 °, the high-pressure excitation sources at the volute tongue excite the rotation noise, and referring to fig. 6 (c), the installation included angle is 0 °, the vibration sources disappear no-sound-pressure mutation, so that the rotation noise can be effectively eliminated.

In this embodiment, the uniformity of the pressure distribution of the installation included angle in the range of-30 ° to 30 ° is higher than that of the installation included angle in the range of 60 °, so that the first air inlet 301 avoids the low-pressure area when air is taken in, the air flow impact can be reduced, the noise generated by the impact of the high-speed air flow in the low-pressure area on the motor bracket 4 is avoided, the rotational noise excited by the high-pressure gradient at the volute tongue is effectively eliminated, the peak value of the rotational noise 32.2db is reduced to 25.8db through the test, the overall sound quality of the fan system is better, and the user experience is improved.

Referring to fig. 3 and 7, the diameter D of the first air inlet 301 and the second air inlet 302 satisfies that D is equal to or less than 200 and equal to or less than 250, the diameter of the double-suction single-centrifugal fan blade is 220-300 mm, and the parameters of the air inlet area S1 of the first air inlet 301 and the air inlet area S2 of the second air inlet 302 are designed as follows:

the air intake area S1 of the first air intake 301 satisfies:

the air intake area S2 of the second air intake 302 satisfies:

air inlet area ratio:

the area ratio range of the air inlet:

where a is the width of the stent ribs 402, b is the length of the stent ribs 402, and d is the diameter of the stent center ring 401. The inlet area of the first inlet 301 is related to the diameter of the center of the bracket and the length and width of the bracket ribs 402, and specifically, the volute body 10 is considered to be practical for industrial use1 to be matched with the bracket ribs 402, when the air inlet area of the first air inlet 301 is too large, that is, the larger the diameter of the guide ring 9 of the volute body 101 is, the smaller the shielding of the guide ring 9 of the volute body 101 to the first air inlet 301 is, in order to meet the air inlet requirement, the length of the bracket ribs 402 is longer, and the width and the thickness of the bracket ribs 402 are reduced, so that the supporting strength of the motor bracket 4 does not meet the use requirement; when the air intake area of the first air intake 301 is too small, the air intake requirement is not satisfied. When the air inlet area S1 of the first air inlet 301 and the air inlet area S2 of the second air inlet 302 satisfyWhen the motor bracket 4 is used, the first air inlet 301 can meet the air inlet demand, and the motor bracket has certain supporting strength.

Referring to fig. 8 and 9 in combination, the air duct scroll 1 is provided with a plurality of first support plates 6 adjacent to the motor bracket 4, the motor bracket 4 is provided with a second support plate 10, and the first support plates 6 and the second support plates 10 are connected with the air duct scroll 1 by bolts.

In the present embodiment, 4 first support plates 6 and 1 second support plate 10 are provided, and the center distance e between the second support plate 10 and the bracket center ring 401 is in the range of 35 to 45mm, and 2 first support plates 6 are provided on the scroll body 101 and the scroll cover 102, respectively. The materials of the first supporting plate 6 and the second supporting plate 10 are titanium alloy, and the second supporting plate 10 can prevent the connection part of the bracket ribs 402 and the volute body 101 from being broken in the transportation process, so that the phenomenon of fan surge is avoided. It should be noted that, for the second support plate 10 disposed on the motor support 4, when the center distance between the second support plate 10 and the support center ring 401 is less than 35mm, the connection is not reinforced, and when the center distance between the second support plate 10 and the support center ring 401 is greater than 45mm, the air intake of the first air inlet 301 is affected, so that the fan surge phenomenon is caused.

Referring to fig. 10, the air duct volute 1 is vertically arranged, an air duct included angle θ is formed between the motor bracket 4 and the vertical direction of the air duct volute 1, and the air duct included angle θ satisfies: θ is more than or equal to 5 degrees and less than or equal to 15 degrees. Referring to FIG. 11, when the included angle of the air duct is within a limited range, that is, the improved wind speed distribution cloud image has uniform color distribution and uniform wind speed; when the included angle of the air duct is not in a limited range, namely the color display of the wind speed distribution cloud picture before improvement is more mottled, the wind speed is unstable, and the pressure difference is easy to generate. When the integral installation angle of the motor support 4 and the air duct included angle of the air duct volute 1 are larger than 15 degrees, the air duct volute 1 is too close to the double-suction centrifugal fan blade 2, under the condition of high rotating speed of the fan, the outflow direction is limited, and air flow backflow is caused, so that air flow loss is caused, the performance of the fan is reduced, and the fan system is excited to generate pneumatic noise. When the included angle of the air duct is smaller than-5 degrees, the whole air duct is too close to the heat exchanger 8, so that the wind speed distribution on the surface of the heat exchanger 8 is affected, the heat exchange performance of the heat exchanger 8 is further affected, the copper pipe is collided in the transportation process, and potential safety hazards exist.

Referring to fig. 12 in combination, an air conditioner includes a heat exchanger 8, a third air inlet 303, and the fan assembly described above, where the third air inlet 303 faces the heat exchanger 8. The double-suction centrifugal fan blade 2 is arranged in the air duct volute 1, so that air intake of the third air inlet 303 can be realized, the first air inlet 301 and the second air inlet 302 are used for air intake, air supply is distributed up and down, air supply comfort and single centrifugal fan system performance are improved, and distributed air supply technical cost is reduced.

It will be readily appreciated by those skilled in the art that the above advantageous ways can be freely combined and superimposed without conflict.

The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the application. The foregoing is merely a preferred embodiment of the present application, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present application, and these modifications and variations should also be regarded as the scope of the application.

Claims

1. A fan assembly, comprising: the double-suction centrifugal fan comprises an air duct volute (1), a motor bracket (4) and double-suction centrifugal fan blades (2) arranged in the air duct volute (1);

a first air inlet (301) and a second air inlet (302) which are arranged corresponding to the air suction ports of the double-suction centrifugal fan blades (2) are arranged on the air duct volute (1); the motor bracket (4) is arranged in the first air inlet (301) and is connected with the motor (5) of the double-suction centrifugal fan blade (2);

wherein, the air inlet area ratio of the air inlet area S1 of the first air inlet (301) to the air inlet area S2 of the second air inlet (302) satisfies:

2. the fan assembly according to claim 1, wherein the motor support (4) comprises a support center ring (401) and a plurality of support ribs (402) arranged along the support center ring (401) array, and one end of the plurality of support ribs (402) away from the support center ring (401) is connected with the air duct volute (1).

3. The fan assembly of claim 2, wherein the number of bracket ribs (402) is 3 or 4.

4. Fan assembly according to claim 2, characterized in that the air duct volute (1) is provided with a plurality of first support plates (6) close to the motor support (4).

5. Fan assembly according to claim 4, characterized in that the motor bracket (4) is provided with a second support plate (10), the second support plate (10) being at a centre distance of 35-45 mm from the bracket centre ring (401).

6. The fan assembly according to claim 1, characterized in that the motor bracket (4) has a central mounting position, the central mounting position has a mounting angle relative to the circumference of the first air inlet (301), and the angle adjustment range of the mounting angle is-30 ° to 30 °.

7. The fan assembly according to claim 1, wherein the air duct volute (1) is vertically arranged, the vertical direction of the motor support (4) and the air duct volute (1) has an air duct included angle θ, and the air duct included angle θ satisfies: θ is more than or equal to 5 degrees and less than or equal to 15 degrees.

8. The fan assembly according to claim 1, characterized in that the air duct volute (1) has a fan blade mounting cavity and a plurality of air outlet air ducts communicating with the fan blade mounting cavity.

9. The fan assembly of claim 8, wherein the plurality of air outlet air ducts includes a first air outlet air duct (701) and a second air outlet air duct (702), and the air outlets of the first air outlet air duct (701) and the second air outlet air duct (702) are opposite in orientation.

10. The fan assembly according to any of claims 1 to 9, wherein the air duct volute (1) comprises a volute body (101) and a volute cover (102) which are mutually buckled, the volute body (101) is provided with the first air inlet (301), and the volute cover (102) is provided with the second air inlet (302).

11. An air conditioner comprising a heat exchanger (8), a third air inlet (303) and a fan assembly according to any of claims 1 to 10, said third air inlet (303) being directed towards said heat exchanger (8).

12. An air conditioning system comprising an air conditioner, the air conditioner being the air conditioner of claim 11.