Fan volute, air supply structure and air conditioner

Abstract

The utility model provides a fan volute, an air supply structure and an air conditioner, and belongs to the technical field of air conditioners. The fan volute comprises a main body, the main body is of a cylindrical structure, and a first passing opening and a second passing opening are formed in the main body. Along the axis direction of the main body, the inner surface and the outer surface of the main body are respectively provided with an adhesive layer made of a flexible material. According to the fan volute, the wind resistance during operation of the fan can be reduced through the adhesion layer, noise is reduced, and the use experience of a user can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to belong to air conditioner technical field especially, relate to a fan volute, air supply structure and air conditioner. BACKGROUND

[0002] In today's air conditioner market, with the improvement of consumer's requirements for home space utilization and aesthetics, the household ducted air conditioner has a significant upward trend in market share among various air conditioner products due to its advantages of occupying less space and embedded installation being simple and elegant. Usually, consumers will install the ducted indoor unit in the master bedroom and living room and other main living scenes, so the comfortable and quiet performance of the ducted indoor unit becomes one of the key factors affecting user experience. During the use of the ducted indoor unit, the fan volute and the return air cover plate directly contact each other, which can easily produce abnormal noise. In order to reduce such abnormal noise, the traditional method is to paste a sponge on the volute or the return air cover plate for protection. However, this traditional protection method has many drawbacks. On the one hand, the cost of pasting the sponge is high, which increases the production cost of the product; on the other hand, the production efficiency of manual pasting is low, which affects the overall production progress of the product. In addition, the sponge may fall off or age during long-term use, which reduces the protection effect and affects the user's experience.

[0003] Therefore, it is necessary to improve the existing fan volute to overcome the defects of the prior art. UTILITY MODEL CONTENT

[0004] In order to overcome the problems in the related art, one of the purposes of the utility model is to provide a fan volute, which can reduce the wind resistance and noise during the operation of the fan through the attachment layer, and help to improve the user's experience.

[0005] A fan volute comprises a main body, the main body is in a cylindrical structure, and the main body is provided with a first through port and a second through port;

[0006] Along the axial direction of the main body, the inner surface and the outer surface of the main body are both provided with an attachment layer made of flexible material.

[0007] Specifically, the attachment layer is made of special flexible rubber material, which has good flexibility, wear resistance and sound absorption performance. In the process of making the attachment layer, the inner and outer surfaces of the volute body are cleaned and roughened to enhance the bonding force between the attachment layer and the body. Then, the rubber material is evenly coated on the inner and outer surfaces of the volute to form an attachment layer with a certain thickness. The flexible rubber attachment layer has a smooth surface and a certain elasticity, which can reduce the friction between the airflow and the inner surface of the volute when the airflow flows in the volute. The noise generated by the fan during operation mainly includes mechanical noise and aerodynamic noise. The flexible rubber attachment layer has good sound absorption performance and can effectively absorb and block these noises. When the fan operates and generates vibration, the rubber attachment layer can buffer the vibration energy and reduce the noise generated by the vibration of the volute from spreading outward. Moreover, the rubber material used in the attachment layer has good wear resistance, which can protect the volute body from being worn by impurities in the airflow during long-term operation of the fan, reducing the risk of corrosion and damage to the surface of the volute. In addition, the attachment layer can reduce the direct contact between other mechanical parts of the application site and the volute, reduce resonance and further reduce noise. The attachment layer also has certain heat insulation performance, which can reduce the transmission and loss of energy at the volute, helping to improve the energy efficiency of the entire air conditioning system.

[0008] In the preferred technical scheme of the utility model, the attachment layer comprises flocking attached to the inner surface and the outer surface of the body, or,

[0009] The attachment layer comprises a base and flocking arranged on the base, and the base is attached to the inner surface and the outer surface of the body.

[0010] The base material is made of nitrile rubber with good adhesion and flexibility, and the flocking is evenly planted on the surface of the base by electrostatic flocking technology. The flocking of the flocking layer has a porous structure, which can effectively absorb the noise generated during the operation of the fan. When the sound wave propagates to the flocking layer, part of the energy is absorbed by the flocking and converted into heat energy, reducing the reflection and propagation of noise. The nitrile rubber of the base also has certain sound absorption and buffering performance, further enhancing the noise reduction effect.

[0011] The flocking of the flocking layer is soft and arranged relatively orderly, which can reduce the friction resistance between the airflow and the volute when the airflow passes through the inner surface of the volute. At the same time, the flexibility of the base can make the attachment layer better fit the surface of the volute, avoiding airflow turbulence caused by uneven surface.

[0012] In the preferred technical scheme of the utility model, the attachment layer protrudes outward from the inner surface and the outer surface of the body, and the protruding height of the attachment layer on the inner surface of the body is less than the protruding height of the attachment layer on the outer surface of the body.

[0013] The protruding height of the attached layer on the inner surface is small, and the fluff can play a certain rectifying role to make the airflow flow more smoothly in the volute without significantly changing the internal flow passage space of the volute.

[0014] The protruding height of the attached layer on the outer surface is large, and the volute body can be better physically protected.

[0015] In the preferable technical scheme of the utility model, the inner surface of the main body is provided with an attached layer, and the protruding height of the attached layer is L1, wherein 1 / 3L≤L1<L.

[0016] Since the protruding height L1 of the attached layer satisfies 1 / 3L≤L1<L, the airflow passage between the fan blade and the inner wall of the volute will not be significantly reduced due to the too high protruding height, and the airflow will not be significantly increased due to the too high wind resistance.

[0017] In the preferable technical scheme of the utility model, the main body comprises a first shell and a second shell which are mutually butted, the outer surfaces of the first shell and the second shell are provided with attached layers, and the protruding height of the attached layer on the outer surface of the second shell is greater than the protruding height of the attached layer on the outer surface of the first shell.

[0018] When the volute of the fan is used in an air conditioner, the second shell serves as the bottom of the volute and has more contact opportunities with other components of the air conditioner, for example, the second shell is in contact with the cover plate metal part of the air conditioner.

[0019] In the preferable technical scheme of the utility model, the first shell is provided with a connecting buckle, the second shell is provided with a clamping groove, and the first shell and the second shell are locked by the cooperation of the connecting buckle and the clamping groove.

[0020] The matching mode of the connecting buckle and the clamping groove makes the assembling process of the first shell and the second shell simple and fast. Compared with the traditional bolt connection or welding mode, no additional tools and complex operation steps are needed, and the operator only needs to align the two shells and apply a certain pressure to complete the assembly, thereby greatly improving the production efficiency. The simplified installation process reduces the labor intensity of the operator and reduces the labor cost and time cost. In mass production, the convenient installation mode can significantly improve the production speed and shorten the production cycle.

[0021] In the preferable technical scheme of the utility model, the first shell is provided with a connecting plate, and the connecting plate is provided with a mounting hole.

[0022] The mounting hole on the connecting plate makes the fan volute more convenient to install on other equipment or structures. The volute can be quickly and accurately fixed through connecting pieces such as bolts and nuts, thereby improving the installation efficiency.

[0023] In the preferable technical scheme of the utility model, along the axial direction of the main body, the inner surface and the outer surface of the main body are both provided with a texture.

[0024] Whether the inner surface or the outer surface is provided with the texture, the roughness and the surface area of the volute surface are greatly increased. When an attachment layer (such as a flocking layer or other functional coating) is arranged on the volute surface, the micro concave-convex structure formed by the texture can make the attachment layer material better embedded therein, tightly fix the attachment layer on the volute surface, effectively reduce the risk of the attachment layer falling off during use, and ensure that the attachment layer stably plays the functions of noise reduction and wind resistance reduction for a long time.

[0025] The second purpose of the utility model is to provide a blowing structure, which comprises a motor and the fan volute as described above.

[0026] The reasonable layout of the motor and the fan volute and the noise reduction design (the attachment layer absorbs sound, the texture reduces noise reflection, etc.) of the fan volute itself make the noise generated by the whole blowing structure during operation significantly reduced. Moreover, due to the synergistic effect of the fan volute reducing the wind resistance and the motor operation, the blowing structure consumes less electric energy under the condition of realizing the same blowing effect.

[0027] The third purpose of the utility model is to provide an air conditioner comprising the blowing structure as described above.

[0028] The utility model has the advantages of:

[0029] The utility model provides a fan volute, the fan volute includes main part, the main part is cylindrical structure, is provided with first pass through mouth and second pass through mouth on the main part. Along the axis direction of main part, the inner surface and the outer surface of main part are all provided with the adhesion layer made of flexible material. The fan volute adopts flexible material to make adhesion layer on the inner surface and the outer surface, and the adhesion layer surface is smooth and has certain elasticity, when the airflow flows in the volute, the adhesion layer can reduce the friction of airflow and the inner surface of volute, reduces the wind resistance, makes the air supply efficiency of fan improve, the adhesion layer has the sound absorption performance, can effectively absorb and block the mechanical noise and aerodynamic noise generated when the fan operates, the adhesion layer of the outer surface of main part can reduce the direct contact of sheet metal part and volute, reduces the resonance, further reduces the noise, in addition, the adhesion layer of the inner and outer surfaces of volute main part has certain heat insulation performance, can reduce the transmission and dissipation of energy at the volute, helps to improve the energy efficiency of whole air conditioning system.

[0030] The application also provides a air supply structure and air conditioner comprising the above fan volute, the air conditioner utilizes the air supply structure to perform air supply, can reduce the noise when the air conditioner operates, reduces the energy consumption, thereby improves the competitiveness of air conditioner. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is the perspective view of the fan volute provided in the embodiment of the utility model;

[0032] Figure 2 It is the front view of the fan volute provided in the embodiment of the utility model;

[0033] Figure 3 It is the side view of the fan volute provided in the embodiment of the utility model;

[0034] Figure 4 It is the schematic view of the first shell provided in the embodiment of the utility model;

[0035] Figure 5 It is the schematic view of the second shell provided in the embodiment of the utility model;

[0036] Figure 6 It is the schematic view of one kind of implementation of the adhesion layer provided in the embodiment of the application;

[0037] Figure 7 It is the schematic view of the air supply structure provided in the embodiment of the application.

[0038] REFERENCE SIGNS:

[0039] 1, main body; 11, first shell; 111, connecting plate; 112, mounting hole; 113, connecting buckle; 12, second shell; 121, clamping groove; 13, first through port; 14, second through port; 2, adhesive layer; 21, base; 22, flocking; 100, mounting plate; 200, motor. DETAILED DESCRIPTION

[0040] Preferred embodiments of the present application will be described in more detail with reference to the drawings. Although preferred embodiments of the present application are shown in the drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present application more thorough and complete, and to convey the scope of the present application to those skilled in the art.

[0041] During use of the ducted fan, the fan volute and the return air cover plate are in direct contact, which can easily produce abnormal noise. In order to reduce such abnormal noise, a sponge is usually pasted on the volute or the return air cover plate for protection. However, this traditional protection method has many drawbacks. On the one hand, the cost of pasting the sponge is high, which increases the production cost of the product; on the other hand, the production efficiency of manual pasting is low, which affects the overall production progress of the product. In addition, the sponge may fall off or age during long-term use, which reduces the protection effect and affects the user's experience.

[0042] Based on this, the present application provides a fan volute.

[0043] Embodiment 1

[0044] As shown in Figures 1-6 The fan volute provided by the present embodiment includes a main body 1, the main body 1 is in a cylindrical structure, and the main body 1 is provided with a first through port 13 and a second through port 14.

[0045] Along the axis direction of the main body 1, the inner surface and the outer surface of the main body 1 are both provided with an adhesive layer 2 made of flexible material.

[0046] Specifically, the fan volute main body 1 is made of ABS engineering plastic with high strength and good weather resistance. Through injection molding process, the main body 1 is processed into a cylindrical structure in accordance with the aerodynamic design. The first through port 13 and the second through port 14 are arranged at opposite ends in the volute axis direction and are circular in shape. The edges of the first through port 13 and the second through port 14 are smoothed to guide the smooth entry of air flow.

[0047] In an embodiment, the attachment layer 2 can be made of a special flexible rubber material that has good flexibility, wear resistance and sound absorption performance. In the process of making the attachment layer 2, the inner and outer surfaces of the volute body 1 are first cleaned and roughened to enhance the bonding force between the attachment layer 2 and the body 1. Then, the rubber material is uniformly coated on the inner and outer surfaces of the volute by spraying process to form the attachment layer 2 with a certain thickness. To ensure uniform coverage, professional spraying equipment is used during the coating process, and the spraying pressure and temperature are strictly controlled. The spraying pressure is kept at 0.5 MPa, and the temperature is controlled at 150°C, so that the rubber material can fully adhere to the surface of the volute, and problems such as air bubbles and uneven thickness can be avoided.

[0048] The flexible rubber attachment layer 2 has a smooth surface and certain elasticity, which can reduce the friction between the airflow and the inner surface of the volute when the airflow flows in the volute. The noise generated by the fan during operation mainly includes mechanical noise and aerodynamic noise. The flexible rubber attachment layer 2 has good sound absorption performance, which can effectively absorb and block these noises. When the fan operates and generates vibration, the rubber attachment layer 2 can buffer the vibration energy and reduce the noise generated by the volute vibration from spreading outward. In addition, the rubber material used in the attachment layer 2 has good wear resistance, which can protect the volute body 1 from being worn by impurities in the airflow during long-term operation of the fan, reducing the risk of corrosion and damage to the surface of the volute. In addition, the attachment layer 2 can reduce the direct contact between other mechanical parts of the application site and the volute, reduce resonance and further reduce noise. The attachment layer 2 also has certain heat insulation performance, which can reduce the transmission and loss of energy at the volute, helping to improve the energy efficiency of the entire air conditioning system.

[0049] In addition, the flexible characteristics of the attachment layer 2 can to some extent fill the possible minor defects in the manufacturing process of the volute, making the surface of the volute more flat and the airflow more stable. During the operation of the fan, it can effectively reduce the turbulence of the airflow, improve the stability of the fan operation, and ensure the reliable operation of the fan under different working conditions, improving the user's experience.

[0050] Example 2

[0051] This embodiment is an improvement based on Example 1.

[0052] As shown in Figures 1-6 In this embodiment, the attachment layer 2 includes flocking 22 attached to the inner and outer surfaces of the body 1.

[0053] In this embodiment, the attachment layer 2 is flocking 22 attached to the inner and outer surfaces of the main body 1. During the flocking 22 process on the volute surface, the parameters such as the amount of flocking, the strength of the electrostatic field, and the flocking 22 speed should be controlled to obtain uniform flocking 22 effect. And after flocking 22, appropriate curing treatment should be carried out to improve the adhesion strength of the flocking 22 and the volute surface. During the flocking 22 process, the strength of the electrostatic field and the flocking 22 speed need to be reasonably controlled to ensure the balance between the amount of flocking 22 and the quality of flocking 22. Because, through the action of the electrostatic field, the flocking 22 can be charged negatively, and under the action of the electric field force, it can fly up and adhere to the volute. The stronger the electrostatic field, the greater the attraction force on the flocking 22, and the amount of flocking 22 increases accordingly. The flocking 22 speed is affected by the strength of the electrostatic field: under the action of the electrostatic field, the flocking 22 can quickly fly up and adhere to the injection molded part. If the strength of the electrostatic field is insufficient or unstable, the flocking 22 speed may slow down, resulting in low flocking 22 efficiency.

[0054] In addition, in this embodiment, the attachment layer 2 includes a base 21 and flocking 22 arranged on the base 21, and the base 21 is bonded to the inner and outer surfaces of the main body 1.

[0055] The base 21 is made of nitrile rubber with good adhesion and flexibility. The flocking 22 is evenly planted on the surface of the base 21 by electrostatic flocking 22 technology. During the flocking 22 process, polyester fiber flocking 22 with a length of 0.8mm is selected, and the flocking 22 is evenly planted on the surface of the base 21 by electrostatic flocking 22 technology. During the flocking 22 process, the strength of the electrostatic field is accurately controlled to be 5000V, the flocking 22 time is 10 minutes, and the amount of flocking 22 is 50g / m 2 , to ensure the uniformity and density of the flocking 22 layer. After the flocking 22 is completed, curing treatment is carried out, and the base 21 is baked in an oven at 60℃ for 30 minutes to enhance the bonding strength of the flocking 22 and the base 21.

[0056] The flocking 22 layer has a porous structure, which can effectively absorb the noise generated during the operation of the fan. When the sound wave propagates to the flocking 22 layer, part of the energy is absorbed by the flocking 22 and converted into heat energy, reducing the reflection and propagation of noise. The nitrile rubber of the base 21 also has certain sound absorption and buffering performance, further enhancing the noise reduction effect.

[0057] The flocking 22 layer has soft texture and relatively neat arrangement, which can reduce the friction resistance between the airflow and the volute when the airflow passes through the inner surface of the volute. At the same time, the flexibility of the base 21 can make the attachment layer 2 better fit the surface of the volute, avoiding the turbulence of the airflow caused by the uneven surface.

[0058] Example 3

[0059] This embodiment is an improvement based on example 1.

[0060] like Figures 1-6 As shown, in this embodiment, the attachment layer 2 protrudes outward from the inner and outer surfaces of the body 1, and the protrusion height of the attachment layer 2 on the inner surface of the body 1 is less than the protrusion height of the attachment layer 2 on the outer surface of the body 1.

[0061] The inner surface attachment layer 2 has a relatively small protrusion height. Without significantly altering the internal flow channel space of the volute, its fibers can play a certain rectifying role, making the airflow within the volute more stable. The smaller protrusion height avoids turbulence caused by excessive protrusion. Turbulence increases energy loss and generates noise. The rational design of the inner surface attachment layer 2 allows the airflow to pass through the volute more orderly, reducing turbulence and further improving the performance of the fan.

[0062] The outer surface attachment layer 2 has a relatively large protrusion, which can provide better physical protection for the volute body 1. The higher attachment layer 2 can act as a buffer and barrier, reducing damage to the volute body 1 from external factors (such as direct contact between mechanical parts and the volute), extending the service life of the volute, and reducing resonance.

[0063] Example 4

[0064] This embodiment is an improvement on embodiment 1.

[0065] like Figures 1-6 As shown, in this embodiment, a fan blade is provided inside the main body 1. The distance between the side of the fan blade facing the inner wall of the main body 1 and the inner wall of the main body 1 is L. The protrusion height of the attachment layer 2 on the inner surface of the main body 1 is L1, where 1 / 3L≤L1<L.

[0066] Specifically, in this embodiment, the attachment layer 2 can be flocked 22, and the height of L1 can be 1mm. Since the protrusion height L1 of the attachment layer 2 satisfies 1 / 3L≤L1<L, it avoids significantly reducing the airflow channel between the fan blade and the inner wall of the volute due to excessive height, thus preventing a substantial increase in wind resistance. Furthermore, the flexibility and special structure of the flocked material can, to some extent, rectify the airflow. In addition, the reasonable design of L1 ensures that the attachment layer 2 has sufficient thickness to perform sound absorption and noise reduction, while avoiding excessive noise caused by friction between the fan blade and the attachment layer 2 due to an excessively large L1.

[0067] Example 5

[0068] This embodiment is an improvement on embodiment 1.

[0069] like Figures 1-6As shown, in the embodiment, the main body 1 comprises a first shell 11 and a second shell 12 which are mutually butted, and the outer surfaces of the first shell 11 and the second shell 12 are provided with the adhesive layers 2, and the protruding height of the adhesive layer 2 on the outer surface of the second shell 12 is greater than the protruding height of the adhesive layer 2 on the outer surface of the first shell 11.

[0070] When the fan volute is used in an air conditioner, the second shell 12 serves as the bottom of the volute, and has more opportunities to contact other components of the air conditioner, for example, to contact the cover plate metal piece of the air conditioner. Therefore, the amount of flocking 22 on the outer surface of the second shell 12 is increased, so as to better isolate the volute from the cover plate metal piece and avoid resonance caused by contact. In addition, the flocking 22 in different places is different, which can reduce the manufacturing cost of the volute while optimizing the performance of the entire volute.

[0071] More specifically, in the embodiment, the first shell 11 is provided with a connecting buckle 113, the second shell 12 is provided with a clamping groove 121, and the first shell 11 and the second shell 12 are locked to each other by the cooperation of the connecting buckle 113 and the clamping groove 121.

[0072] In the production process, the first shell 11 and the second shell 12 are respectively manufactured by using an injection molding process. The first shell 11 is a semi-cylindrical structure, and a first through port 13 is designed at the front end, and the edge is smoothly treated to reduce the resistance when the airflow enters. The second shell 12 is also a semi-cylindrical structure, and forms a complete cylindrical volute after being butted with the first shell 11. A second through port 14 is arranged at the rear end, and is rectangular and has a reinforcing rib design at the edge to enhance the structural strength. After injection molding, the surfaces of the two shells are deburred and polished to ensure smoothness and avoid scratches or affect the sealing performance during subsequent installation and use. Four connecting buckles 113 are uniformly arranged at the butting edge of the first shell 11. The connecting buckles 113 are integrally injection molded on the first shell 11 by using a plastic material with good elasticity. Four clamping grooves 121 are arranged at the butting edge of the second shell 12 corresponding to the positions of the connecting buckles 113. The size of the clamping groove 121 matches the connecting buckle 113, and the inner width of the clamping groove 121 is slightly greater than the head width of the connecting buckle 113 to ensure that the connecting buckle 113 can be smoothly inserted. The two sides of the clamping groove 121 are provided with guide inclined surfaces to facilitate guiding the connecting buckle 113 to accurately enter the clamping groove 121.

[0073] The matching mode of the connecting buckle 113 and the clamping groove 121 makes the assembly process of the first shell 11 and the second shell 12 simple and fast. Compared with the traditional bolt connection or welding mode, no additional tools and complex operation steps are needed, and the operator only needs to align the two shells and apply a certain pressure to complete the assembly, which greatly improves the production efficiency. The simplified installation process reduces the labor intensity of the operator and reduces the labor cost and time cost. In mass production, this convenient installation method can significantly improve the production speed and shorten the production cycle. The connecting buckle 113 and the clamping groove 121 are simultaneously formed when the first shell 11 and the second shell 12 are injection molded, ensuring the positional accuracy and dimensional accuracy. After forming, the connecting buckle 113 and the clamping groove 121 are checked to remove possible burrs and flash to ensure smooth surfaces.

[0074] More preferably, in the preferred technical scheme of the utility model, the first shell 11 is provided with a connecting plate 111, and the connecting plate 111 is provided with a mounting hole 112.

[0075] The mounting hole 112 on the connecting plate 111 is designed to make the fan volute more convenient to install on other equipment or structures. By passing through the mounting hole 112 with connecting pieces such as bolts and nuts, the volute can be quickly and accurately fixed, improving the installation efficiency.

[0076] Embodiment 6

[0077] This embodiment is improved on the basis of embodiment 1.

[0078] As shown in the drawings, Figures 1-6 In this embodiment, the inner surface and the outer surface of the main body 1 are provided with a texture along the axial direction of the main body 1.

[0079] In one embodiment, the inner surface of the volute main body 1 is textured by chemical etching. First, the volute main body 1 is fixed on a special fixture to ensure that the inner surface is completely exposed and easy to handle. Then, a special etching solution is prepared, and the composition of the etching solution is optimized according to the characteristics of the aluminum alloy material and the desired texture effect, mainly including acidic etchant, buffer and additive, etc. The prepared etching solution is uniformly sprayed on the inner surface, and the corrosion-resistant spray gun is used to control the spraying pressure and flow rate, so that the etching solution is uniformly distributed on the inner surface of the volute. During the etching process, the etching time is strictly controlled to be 15 minutes, and the temperature is kept at 30℃, and a uniform micro concave-convex texture is formed on the inner surface of the volute through chemical reaction, and the texture depth is about 0.05mm. This texture can effectively enhance the adhesion of the subsequent adhesive layer 2.

[0080] The textured surfaces, both inner and outer, significantly increase the roughness and surface area of ​​the volute. When an attachment layer 2 (such as 22 layers of flocking or other functional coatings) is applied to the volute surface, the micro-uneven structure formed by the textured surface allows the attachment layer 2 material to be better embedded within it, firmly fixing the attachment layer 2 to the volute surface. This effectively reduces the risk of the attachment layer 2 falling off during use and ensures that the attachment layer 2 can stably perform its functions of noise reduction and wind resistance reduction over a long period of time.

[0081] Example 7

[0082] like Figures 1-7 As shown, this embodiment provides an air supply structure, including a motor 200 and a fan casing as described above. Both the motor 200 and the fan casing are fixed to a mounting plate 100. A fan blade is mounted on the shaft of the motor 200, and the fan casing covers the outer periphery of the fan blade. Specifically, the mounting plate 100 can be the housing of an air conditioner, and it can be made of aluminum alloy. During assembly, the motor 200 is placed at a predetermined position on the mounting plate 100, aligning the mounting holes 112 of the motor 200 with those on the mounting plate 100. M6 bolts and nuts are used to fix the motor 200 to the mounting plate 100, with the tightening torque controlled at 8-10 N·m to ensure the motor 200 is securely installed. Install the fan blades on the shaft of the motor 200. Carefully wrap the prepared fan volute around the fan blades, aligning the connecting plate 111 of the fan volute with the positioning groove on the mounting plate 100. Then, use M5 bolts to pass through the mounting holes 112 to fix the fan volute to the mounting plate 100. During the installation process, pay attention to adjusting the position of the fan volute to ensure that the gap between the fan blades and the inner wall of the volute is uniform and to avoid scratching.

[0083] The rational layout of the motor 200 and the fan casing, along with the noise reduction design of the fan casing itself (sound absorption by the attached layer 2, and noise reflection reduction by the textured surface), significantly reduces the noise generated by the entire air supply structure during operation. Moreover, due to the synergistic effect of the fan casing reducing wind resistance and the motor 200's operation, this air supply structure consumes less electrical energy to achieve the same air supply effect.

[0084] More preferably, the motor 200 can be a dual-head motor 200, with fan blades installed on both shafts of the dual-head motor 200, and the fan blades are covered with fan volutes.

[0085] Example 8

[0086] This embodiment provides an air conditioner, including the air supply structure described above.

[0087] Specifically, the air conditioner further comprises a related heat exchange system, an electrical control system and related auxiliary components, such as a drain pan, a drain pipe and the like. The low-noise design of the air supply structure of the air conditioner makes the air conditioner produce less noise during operation. Whether it is at night or in a quiet environment.

[0088] The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless otherwise specifically stated. At the same time, it should be understood that the sizes of the various parts shown in the drawings are not drawn in accordance with the actual proportional relationship for the convenience of description. The technology, methods and equipment known to those skilled in the related art can not be discussed in detail, but should be considered as part of the authorized description under appropriate circumstances. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings. In the description of the present application, it should be understood that the orientation or position relationship indicated by orientation words such as "front, rear, upper, lower, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" is generally based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, without the opposite indication, these orientation words do not indicate and imply that the indicated device or element must have a particular orientation or be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of the parts themselves.

[0089] For the convenience of description, spatial relative terms such as "over", "above", "upper surface", "upper" and the like can be used here to describe the spatial position relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawing is inverted, the device described as "above" or "over" other devices or structures will be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used here are interpreted accordingly.

[0090] In addition, it needs to be explained that the use of "first", "second" and the like to limit the parts is only for the convenience of distinguishing the corresponding parts, and the above words have no special meaning if there is no further declaration, so it cannot be understood as a limitation on the protection scope of the present application. The above is only the preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1.A fan volute, comprising a main body (1) in a cylindrical structure, and a first through port (13) and a second through port (14) provided on the main body (1), characterized in that: along the axial direction of the main body (1), the inner surface and the outer surface of the main body (1) are provided with an attached layer (2) made of flexible material. 2.The fan volute according to claim 1, characterized in that: the attached layer (2) comprises flocking (22) attached to the inner surface and the outer surface of the main body (1) ; or the attached layer (2) comprises a substrate (21) and flocking (22) provided on the substrate (21), and the substrate (21) is attached to the inner surface and the outer surface of the main body (1). 3.The fan volute according to claim 2, characterized in that: the attached layer (2) protrudes outward from the inner surface and the outer surface of the main body (1), and the protruding height of the attached layer (2) on the inner surface of the main body (1) is less than the protruding height of the attached layer (2) on the outer surface of the main body (1). 4.The fan volute according to claim 2, characterized in that: a fan blade is arranged in the main body (1), and the distance between the side of the fan blade facing the inner wall of the main body (1) and the inner wall of the main body (1) is L, the protruding height of the attached layer (2) on the inner surface of the main body (1) is L1, and 1 / 3L≤L1<L. 5.The fan volute according to any one of claims 1-4, characterized in that: the main body (1) comprises a first shell (11) and a second shell (12) which are abutted to each other, the outer surface of the first shell (11) and the second shell (12) are provided with the attached layer (2), and the protruding height of the attached layer (2) on the outer surface of the second shell (12) is greater than the protruding height of the attached layer (2) on the outer surface of the first shell (11). 6.The fan volute according to claim 5, characterized in that: the first shell (11) is provided with a connecting buckle (113), the second shell (12) is provided with a clamping groove (121), and the first shell (11) and the second shell (12) are locked to each other by the cooperation of the connecting buckle (113) and the clamping groove (121). 7.The fan volute according to claim 6, characterized in that: the first shell (11) is provided with a connecting plate (111), and the connecting plate (111) is provided with a mounting hole (112). 8.The fan volute according to any one of claims 1-4, characterized in that: along the axial direction of the main body (1), the inner surface and the outer surface of the main body (1) are provided with a sunken line. A fan structure comprising a motor (200) and a fan volute according to any one of claims 1-8, wherein the motor (200) and the fan volute are fixed on a mounting plate (100), a rotating shaft of the motor (200) is provided with a fan blade, and the fan volute is wrapped around the periphery of the fan blade. A fan structure according to claim 9. ​ ​ ​ ​ ​ ​ ​ 9. An air supply structure, characterized by: ​ 10. An air conditioner characterized by comprising: ​

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