Fan assembly and air conditioner

Abstract

The utility model discloses a fan assembly and an air conditioner. The fan assembly comprises a volute; the volute tongue is connected with the volute; a plurality of first through holes are formed in the first cover body; and the multiple first partition pieces are at least partially arranged between the first cover body and the volute tongue in a staggered mode so as to form multiple first silencing cavities, and each first silencing cavity communicates with at least one first through hole so as to form a first noise reduction structure.

Description

Technical Field

[0001] The present application belongs to the field of electrical appliance technology, and specifically relates to a fan assembly and an air conditioner. Background Art

[0002] Ducted air conditioners are a common form of air conditioning equipment in commercial and residential air conditioning systems, widely used in conference rooms, offices, shopping malls, large supermarkets, luxury residences, and villas. Ducted air conditioners are highly sought after for their efficient cooling and heating capabilities and flexible installation methods.

[0003] The fan assembly is one of the core components of the duct air conditioner. However, in the prior art, the fan assembly generates a lot of noise when it is running. Utility Model Content

[0004] In order to solve the above technical problems, the present invention provides a fan assembly and an air conditioner, which aim to solve the technical problem of high noise of the fan assembly at least to a certain extent.

[0005] The technical solution of the utility model is:

[0006] A fan assembly is special in that it includes: a volute; a volute tongue connected to the volute; a first cover body, which is provided with a plurality of first through holes; and a plurality of first partitions, which are at least partially staggered and arranged between the first cover body and the volute tongue to form a plurality of first silencer chambers, each of which is connected to at least one of the first through holes to form a first noise reduction structure.

[0007] Since the volute tongue is connected to the volute, the volute tongue can guide the airflow to flow in an orderly manner in the volute, reduce airflow turbulence and vortex phenomena, and thus improve the flow efficiency of the airflow. The volute tongue and the volute work together to convert the dynamic pressure energy of the airflow from the impeller in the volute into static pressure energy, forming wind pressure, which further improves the overall efficiency of the fan. Since the first cover body is provided with a plurality of first through holes, a plurality of first partitions are at least partially staggered and arranged between the first cover body and the volute tongue to form a plurality of first silencer chambers, and each first silencer chamber is connected to at least one first through hole to form a first noise reduction structure. Therefore, when the fan assembly generates noise, the sound waves can enter through the first through hole. The first silencing cavity, each first silencing cavity serves as an independent acoustic space, and sound waves can resonate in the first silencing cavity. During the resonance process, the first silencing cavity absorbs the energy of the sound wave and converts this part of the energy into other forms of energy (such as heat energy) through the vibration inside the first silencing cavity, thereby dissipating the energy of the sound wave. At the same time, the sound wave will be reflected and interfered multiple times in the first silencing cavity. During the reflection and interference process, the propagation direction and phase of the sound wave can be changed, so that the positive and negative sound waves are superimposed and offset each other to reduce the energy of the sound wave. The sound wave is resonated, reflected and interfered by the first noise reduction structure, thereby achieving the effect of silencing and reducing noise.

[0008] In some embodiments, along the axial direction of the volute, the height of the first noise reduction structure gradually decreases from the center of the volute tongue to the edge of the volute tongue to ensure the air intake volume.

[0009] In some embodiments, the first cover and the plurality of first partitions are located outside the volute to ensure a noise reduction effect.

[0010] In some embodiments, a connecting piece is provided at the end of the volute tongue facing away from the volute, and the end of the first cover body has an avoidance plane for avoiding the connecting piece to facilitate the installation of the volute.

[0011] In some embodiments, the first cover body includes a first cover portion and a second cover portion integrally formed with the first cover portion, the first cover portion is arranged on the volute tongue, and the second cover portion is arranged on the volute casing; wherein, a plurality of the first partitions are staggeredly arranged between the first cover portion and the volute tongue and between the second cover portion and the volute casing to further ensure the noise reduction effect.

[0012] In some embodiments, the height of the first noise reduction structure gradually decreases from the center of the second cover portion to the edge of the second cover portion to ensure the air intake volume.

[0013] In some embodiments, an air guide is provided on the edge of the volute, and along the axial direction of the volute, the distance between the second cover and the air guide gradually increases to ensure the air intake volume.

[0014] In some embodiments, two opposite sides of the first partition are respectively fitted with the volute tongue and the first cover portion, and two opposite sides of the first partition are respectively fitted with the volute and the second cover portion to form a first noise reduction structure.

[0015] In some embodiments, the volute includes a first body and a second body, one end of the first body is connected to the second body, and the other end is connected to the volute tongue, the first cover is connected to the first body and / or the volute tongue, and the fan assembly also includes: a second cover, connected to the second body, and spaced apart from the first cover, the second cover is provided with a plurality of second through holes; a plurality of second partitions, staggeredly arranged between the second cover and the second body to form a plurality of second silencer chambers, each second silencer chamber is connected to at least one second through hole to form a second noise reduction structure to further ensure the noise reduction effect.

[0016] In some embodiments, the second cover and the plurality of second partitions are located outside the volute to ensure a noise reduction effect.

[0017] In some embodiments, the height of the second noise reduction structure gradually decreases from the center of the second body to the edge of the second body to ensure the air intake volume.

[0018] Based on the same utility model concept, the utility model also provides an air conditioner, including the fan assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, a brief introduction will be given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0020] Figure 1 A schematic structural diagram of a volute of a fan assembly in some embodiments;

[0021] Figure 2 for Figure 1 Exploded view of the middle volute;

[0022] Figure 3 for Figure 1 Cross-sectional view of the middle volute;

[0023] Figure 4 for Figure 1 Front view of the middle volute;

[0024] Figure 5 for Figure 1Rear view of the middle volute;

[0025] Figure 6 for Figure 1 Top view of the middle volute.

[0026] In the attached figure:

[0027] Volute 10, air inlet 101, air guide 102, first body 103, second body 104;

[0028] Cochlear tongue 20;

[0029] First cover 30, first through hole 301, first cover portion 302, second cover portion 303;

[0030] First partition 40, first muffler cavity 401;

[0031] Connector 50;

[0032] Second cover 60, second through hole 601;

[0033] A second partition 70, a second muffler cavity 701;

[0034] a first noise reduction structure 80;

[0035] Second noise reduction structure 90 . DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0038] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0039] In addition, in this utility model, the descriptions of "first" and "second" are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features specified as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0040] The present application is described below with reference to specific embodiments and with reference to the accompanying drawings:

[0041] The fan assembly and air conditioner provided in this embodiment are intended to at least to some extent solve the technical problem of high noise from the fan assembly.

[0042] Figure 1 A schematic structural diagram of a volute of a fan assembly in some embodiments; Figure 2 for Figure 1 Exploded view of the middle volute; Figure 3 for Figure 1 Cross-sectional view of the middle volute. Figure 1 、 Figure 2 and Figure 3 The fan assembly of the embodiment of the present application includes: a volute 10, a volute tongue 20, a first cover 30, and a plurality of first partitions 40. The volute tongue 20 is connected to the volute 10. The first cover 30 defines a plurality of first through-holes 301. The plurality of first partitions 40 are at least partially staggered between the first cover 30 and the volute tongue 20 to form a plurality of first muffler cavities 401. Each first muffler cavity 401 is connected to at least one first through-hole 301 to form a first noise reduction structure 80.

[0043] A first silencing cavity 401 and at least one first through hole 301 are connected to form a first noise reduction unit of the first noise reduction structure 80 , and a plurality of first noise reduction units constitute the first noise reduction structure 80 .

[0044] The first noise reduction structure 80 may be an acoustic metamaterial.

[0045] The volute 10 and the volute tongue 20 may be integrally formed.

[0046] Since the volute tongue 20 is connected to the volute 10, the volute tongue 20 can guide the airflow to flow in the volute 10 in an orderly manner, reduce airflow turbulence and vortex phenomena, and thus improve the flow efficiency of the airflow. The volute tongue 20 and the volute 10 work together to convert the dynamic pressure energy of the impeller in the volute 10 into static pressure energy, forming wind pressure, which further improves the overall efficiency of the fan. Since the first cover 30 is provided with a plurality of first through holes 301, a plurality of first partitions 40 are at least partially staggered between the first cover 30 and the volute tongue 20 to form a plurality of first silencer chambers 401, and each first silencer chamber 401 is connected to at least one first through hole 301 to form a first noise reduction structure 80. Therefore, when the fan assembly generates noise, the sound waves can Entering the first silencing cavity 401 through the first through hole 301, each first silencing cavity 401 serves as an independent acoustic space, and sound waves can resonate in the first silencing cavity 401. During the resonance process, the first silencing cavity absorbs the energy of the sound wave and converts this energy into other forms of energy (such as heat energy) through the vibration inside the first silencing cavity 401, thereby dissipating the energy of the sound wave. At the same time, the sound wave will be reflected and interfered multiple times in the first silencing cavity 401. During the reflection and interference process, the propagation direction and phase of the sound wave can be changed, so that the positive and negative sound waves are superimposed and offset each other to reduce the energy of the sound wave. The sound wave is resonated, reflected and interfered by the first noise reduction structure 80, thereby achieving the effect of silencing and reducing noise.

[0047] In some embodiments, since each first silencer cavity 401 is connected to at least one first through hole 301, that is, each first silencer cavity 401 can be connected to one or more first through holes 301, the volumes of some of the first silencer cavities 401 in the multiple first silencer cavities 401 are different, and / or the number of first through holes 301 connected to the first silencer cavities 401 of the same volume is different, that is, at least some of the multiple first noise reduction units of the first noise reduction structure 80 are different, so as to target sound waves of different frequencies, so that the first noise reduction unit can resonate, multiple reflect and interfere with the sound waves of corresponding frequencies, thereby achieving silencing of sound waves of different frequencies and improving the silencing efficiency.

[0048] The fan assembly can be a centrifugal fan. When the airflow passes through the volute tongue 20, strong aerodynamic noise and mechanical noise will be generated due to the vortex, separation and interaction of the airflow with the volute tongue 20. The current method of reducing noise is to partially cover the volute tongue 20 with a top cover plate to block the source of noise, resulting in an extra part of the top cover plate, which makes it inconvenient to disassemble and assemble the volute 10. In some embodiments, the sound waves resonate, reflect and interfere in the first noise reduction structure 80 to achieve a silencing effect, reduce noise, and do not need to change the structure and size of the top cover plate to avoid the top cover plate interfering with the disassembly and assembly of the volute 10, thereby improving the disassembly and assembly efficiency of the volute 10.

[0049] In some embodiments, the plurality of first partitions 40 are at least partially staggered between the first cover 30 and the volute tongue 20 , which can ensure the structural strength of the first cover 30 and the volute tongue 20 .

[0050] In some embodiments, in order to ensure the air intake volume, the height of the first noise reduction structure 80 gradually decreases from the center of the volute tongue 20 to the edge of the volute tongue 20 along the axial direction of the volute 10, which can ensure that the first noise reduction structure 80 is thinner at the edge of the volute tongue 20, so as to reduce the wind blocking area of ​​the first noise reduction structure 80, reduce the obstruction to the airflow, ensure the smooth flow of the airflow, reduce the occurrence of eddy currents and separation phenomena, thereby increasing the air intake volume and ensuring that the performance of the fan assembly is not affected. Moreover, the reduction in wind resistance not only improves the air intake efficiency, but also helps to reduce the noise and vibration caused by airflow turbulence, thereby improving the noise reduction effect.

[0051] Figure 4 for Figure 1 Front view of the middle volute. Figure 1 and Figure 4 In some embodiments, the volute 10 has an air inlet 101. Along the axial direction of the volute 10, the height of the first noise reduction structure 80 gradually decreases from the center of the volute tongue 20 to the air outlet 101. That is, the first noise reduction structure 80 is thinner near the air outlet 101 to reduce the wind blocking area of ​​the first noise reduction structure 80, which can ensure that the obstruction to the airflow is reduced at the edge of the volute tongue 20, ensure the smooth flow of the airflow, reduce the occurrence of eddy currents and separation phenomena, thereby increasing the air intake volume and ensuring that the performance of the fan assembly is not affected. Moreover, the reduction in wind resistance not only improves the air intake efficiency, but also helps to reduce the noise and vibration caused by airflow turbulence, thereby improving the noise reduction effect.

[0052] Since there is an impeller in the volute 10 , the impeller rotates in the volute 10 , resulting in a high wind speed in the volute. If the first noise reduction structure 80 is disposed in the volute 10 , a whistling sound will be caused. Figure 6 for Figure 1 Top view of the middle volute. Figure 6 In some embodiments, in order to ensure the noise reduction effect, the first cover body 30 and the multiple first partitions 40 are all located outside the volute 10, which can effectively avoid the first cover body 30 and the multiple first partitions 40 from interfering with the fluid flow and sound propagation inside the volute 10, thereby reducing the sound field interference inside the volute 10, avoiding the generation of whistling sounds, and improving the noise reduction effect.

[0053] In some embodiments, in order to facilitate the installation of the volute 10, a connector 50 is provided at the end of the volute tongue 20 facing away from the volute 10, and the end of the first cover body 30 has an avoidance plane for avoiding the connector 50. The volute 10 can be connected to other components of the air conditioner through the connector 50 to ensure the stability of the installation of the volute 10. The connector 50 is avoided by the avoidance plane to avoid the first cover body 30 from encroaching on the connection space between the connector 50 and other components, so as to facilitate the connection of the connector 50 with other components.

[0054] Combine Figure 1 and Figure 2 In some embodiments, since the first cover body 30 has an avoidance plane, the avoidance plane can enable the first cover body 30 to directly block or significantly interfere with the flow path of the airflow, thereby ensuring that the airflow can pass through the area smoothly, reducing energy loss, and increasing the air volume. At the same time, the distribution of the airflow between the first cover body 30 and the volute 10 can be optimized, ensuring that the airflow can enter the volute 10 evenly, avoiding the uneven airflow caused by local blockage, and the avoidance plane can reduce the obstruction to the airflow, so that the airflow can flow smoothly, thereby reducing the possibility of noise and vibration, and further improving the noise reduction effect.

[0055] Combine Figure 1 、 Figure 2 and Figure 3 In some embodiments, to further ensure the noise reduction effect, the first cover body 30 includes a first cover portion 302 and a second cover portion 303 integrally formed with the first cover portion 302. The first cover portion 302 is provided to cover the volute tongue 20, and the second cover portion 303 is provided to cover the volute 10. A plurality of first partitions 40 are alternately arranged between the first cover portion 302 and the volute tongue 20 and between the second cover portion 303 and the volute 10.

[0056] In some embodiments, when the fan assembly generates noise, the sound waves can enter the first silencer cavity 401 between the first cover portion 302 and the volute tongue 20 and the first silencer cavity 401 between the second cover portion 303 and the volute 10 through the first through hole 301. Each first silencer cavity 401 serves as an independent acoustic space, and the sound waves can resonate in the first silencer cavity 401. During the resonance process, the first silencer cavity 401 absorbs the energy of the sound wave and converts this energy into other forms of energy (such as heat energy) through vibration inside the first silencer cavity 401, thereby dissipating the energy of the sound wave. At the same time, the sound wave will be reflected and interfered multiple times in the first silencer cavity 401. During the reflection and interference process, the propagation direction and phase of the sound wave can be changed, so that the positive and negative sound waves are superimposed and offset each other to reduce the energy of the sound wave, thereby achieving the effect of silencing and reducing noise.

[0057] In some embodiments, multiple first partitions 40 are staggeredly arranged between the first cover portion 302 and the volute tongue 20 to form a first sub-noise reduction structure. Since the position of the volute tongue 20 is a concentrated area of ​​noise sources, the first sub-noise reduction structure can directly reduce the noise at the volute tongue 20 to achieve a sound-absorbing effect and reduce noise. Multiple first partitions 40 are staggeredly arranged between the second cover portion 303 and the volute 10 to form a second sub-noise reduction structure. That is, the second cover portion 303 extends along the volute tongue 20 toward the volute 10, so that the second sub-noise reduction structure can further reduce the noise that is not completely absorbed and / or not absorbed by the first sub-noise reduction structure. The second sub-noise reduction structure can expand the sound-absorbing area, so that the noise at the volute tongue can be fully reduced, further reducing the noise level.

[0058] In some embodiments, when the fan assembly is running, suction noise is generated at the air inlet 101. The projection of the second sub-noise reduction structure on the volute 10 along the radial direction of the volute 10 overlaps with the projection of the air inlet 101 on the volute 10 along the axial direction of the volute 10. The suction noise will diffuse spherically, and the noise energy will radiate to the surroundings. Part of the noise energy will encounter the second sub-noise reduction structure, so that part of the suction noise will be directly absorbed by the second sub-noise reduction structure, further reducing the noise level. In addition, part of the suction noise will hit the shell that accommodates the fan assembly, causing the suction noise to be diffusely reflected. The second sub-noise reduction structure covers the volute 10, ensuring the silencing area of ​​the first noise reduction structure 80, so that the second sub-noise reduction structure can capture the diffusely reflected noise, thereby expanding the range and effect of noise reduction and further reducing the noise level.

[0059] In some embodiments, since the first cover portion 302 and the second cover portion 303 are integrally formed, there are no additional connectors or seams between the first cover portion 302 and the second cover portion 303, which can improve the structural strength of the entire first cover body 30, making the first cover body 30 more resistant to external pressure and vibration. Moreover, compared with the process of separate manufacturing and then assembly, the manufacturing process can be simplified, the number of parts and assembly steps can be reduced, and the production cost and manufacturing cycle can be reduced.

[0060] Combine Figure 1 and Figure 2In some embodiments, to ensure adequate airflow, the height of the first noise reduction structure 80 gradually decreases from the center of the second cover portion 303 toward the edge of the second cover portion 303. That is, the distance between the second cover portion 303 and the volute 10 gradually decreases from the center of the second cover portion 303 toward the edge of the second cover portion 303. This reduces the obstruction encountered by the airflow as it passes through this area and enters the volute 20, thereby reducing wind resistance and allowing the airflow to enter the volute 20 more smoothly, improving air intake efficiency. As the airflow approaches the edge of the second cover portion 303, it is guided more concentratedly and evenly, reducing the generation of vortices and turbulence, improving air intake efficiency, and reducing noise and vibration. The first partition 40 may be arc-shaped, and the first cover body 30 may be hemispherical.

[0061] In some embodiments, since the height of the first noise reduction structure 80 gradually decreases from the center of the second cover portion 303 to the edge of the second cover portion 303, the airflow passes through the second cover portion 303 and enters the volute 10 smoothly, reducing the noise generated by airflow turbulence.

[0062] Combine Figure 1 and Figure 2 In some embodiments, to ensure adequate airflow, an air guide 102 is provided at the edge of the volute 10. The air guide 102 guides air flow, allowing air to flow more smoothly into the volute 10, thereby reducing turbulence and eddy currents during air flow and improving air intake efficiency. The air guide 102 is located within the air inlet 101.

[0063] In some embodiments, in order to ensure the air intake volume, the distance between the second cover portion 303 and the air guide 102 gradually increases along the axial direction of the volute 10, so that the air can gradually diffuse during the flow process, reducing the wind resistance caused by sudden changes. Moreover, it provides a larger flow space for the air, allowing the air to enter the interior of the volute 10 more freely, further reducing the wind resistance, allowing more air to smoothly enter the interior of the volute 10, thereby increasing the air intake volume. At the same time, it can also maintain the stability of the air flow, avoiding noise and vibration caused by too fast or too slow flow rate.

[0064] Combine Figure 3In some embodiments, in order to form the first noise reduction structure 80, the opposite sides of the first partition 40 are respectively fitted with the volute tongue 20 and the first cover 302, and the opposite sides of the first partition 40 are respectively fitted with the volute 10 and the second cover 303, so that the first silencer cavity 401 is a closed cavity. After the sound wave enters the first silencer cavity 401, it will not leak, so that the sound wave resonates, reflects, interferes and attenuates in the first silencer cavity 401, thereby reducing the energy and propagation range of the sound wave, which can effectively reduce the noise generated during the operation of the equipment and improve the user experience.

[0065] In some embodiments, the first partition 40 may be connected to the first cover 30. Of course, in other embodiments, the first partition 40 may be connected to the volute 10.

[0066] Figure 5 for Figure 1 Rear view of the middle volute. Figure 1 、 Figure 2 、 Figure 3 and Figure 5 In some embodiments, to further enhance noise reduction, the volute 10 includes a first body 103 and a second body 104. One end of the first body 103 is connected to the second body 104, and the other end is connected to the volute tongue 20. The first cover 30 is connected to the first body 103 and / or the volute tongue 20. The fan assembly further includes a second cover 60 and a plurality of second partitions 70. The second cover 60 is connected to the second body 104 and spaced apart from the first cover 30. The second cover 60 defines a plurality of second through-holes 601. The plurality of second partitions 70 are staggered between the second cover 60 and the second body 104 to form a plurality of second muffler cavities 701. Each second muffler cavity 701 communicates with at least one second through-hole 601 to form a second noise reduction structure 90. The communication between a second muffler cavity 701 and at least one second through-hole 601 forms a second noise reduction unit of the second noise reduction structure 90. The plurality of second noise reduction units constitute the second noise reduction structure 90. The second noise reduction structure 80 may be an acoustic metamaterial.

[0067] In some embodiments, sound waves can resonate in the second silencing chamber 701. During the resonance process, the second silencing chamber 701 absorbs the energy of the sound waves and converts this energy into other forms of energy (such as heat energy) through vibration inside the second silencing chamber 701, thereby dissipating the energy of the sound waves. At the same time, the sound waves will be reflected and interfered multiple times in the second silencing chamber 701. During the reflection and interference process, the propagation direction and phase of the sound waves can be changed, so that the positive and negative sound waves are superimposed and offset each other to reduce the energy of the sound waves. The sound waves are resonated, reflected and interfered by the second noise reduction structure 90, thereby achieving the effect of silencing and reducing noise.

[0068] In some embodiments, since the position of the snail tongue 20 is a noise source concentration area, the first noise reduction structure 80 can directly reduce the noise at the snail tongue 20 to achieve a silencing effect and reduce the noise. The second noise reduction structure 90 is arranged on the second body 104, that is, the second noise reduction structure 90 is located in the area of ​​the volute 10 away from the snail tongue 20, so that the second noise reduction structure 90 can reduce the noise that is not completely absorbed and / or not absorbed by the first noise reduction structure 80 again. The second noise reduction structure 90 can expand the silencing area, so that the noise at the snail tongue can be fully reduced, further reducing the noise level.

[0069] In some embodiments, when the fan assembly is running, suction noise is generated at the air inlet 101. The projection of the second noise reduction structure 90 on the volute 10 along the radial direction of the volute 10 overlaps with the projection of the air inlet 101 on the volute 10 along the axial direction of the volute 10. The suction noise will diffuse spherically, and the noise energy will radiate to the surroundings. Part of the noise energy will encounter the second noise reduction structure 90, so that part of the suction noise will be directly absorbed by the second noise reduction structure 90, further reducing the noise level. In addition, part of the suction noise will hit the shell that accommodates the fan assembly, causing the suction noise to be diffusely reflected. The second noise reduction structure 90 covers the second body 104, ensuring the silencing area of ​​the second noise reduction structure 90, so that the second sub-noise reduction structure can capture the diffusely reflected noise, thereby expanding the range and effect of noise reduction and further reducing the noise level.

[0070] In some embodiments, since each second silencer cavity 701 is connected to at least one second through hole 601, that is, each second silencer cavity 701 can be connected to one or more second through holes 601, the volumes of some of the second silencer cavities 701 in the multiple second silencer cavities 701 are different, and / or the number of second through holes 601 connected to the second silencer cavities 701 of the same volume is different, that is, at least some of the multiple second noise reduction units of the second noise reduction structure 90 are different, so as to target sound waves of different frequencies, so that the second noise reduction units can resonate, multiple reflect and interfere with the sound waves of corresponding frequencies, thereby achieving silencing of sound waves of different frequencies and improving the silencing efficiency.

[0071] In some embodiments, in order to ensure the air intake volume, the second cover body 60 is spaced apart from the first cover body 30 so that there is no obstruction between the first cover body 30 and the second cover body 60. A space for air circulation is formed between the first cover body 30 and the second cover body 60, so that air can more easily enter the interior of the volute 10, thereby increasing the efficiency and amount of air circulation, reducing the obstruction of air flow, allowing air to pass more smoothly, and making the air volume entering the volute 10 meet the requirements. Moreover, due to the smooth air circulation, the noise generated by air obstruction is reduced, and the comfort of the user when using the device is improved.

[0072] In some embodiments, a plurality of second partitions 70 are staggeredly arranged between the second cover 60 and the second body 104 to ensure the structural strength of the second cover 60 and the second body 104 .

[0073] Because the impeller inside the volute 10 rotates, the wind speed inside the volute is high. If the first noise reduction structure 80 is disposed inside the volute 10, a whistling sound may be generated. In some embodiments, the second cover 60 and the plurality of second partitions 70 are both located outside the volute 10. This effectively prevents the second cover 60 and the plurality of second partitions 70 from interfering with the fluid flow and sound propagation inside the volute 10, thereby reducing the sound field interference inside the volute 10, avoiding the generation of whistling sounds, and improving the noise reduction effect.

[0074] Combine Figure 3 In some embodiments, to ensure adequate airflow, the height of the second noise reduction structure 90 gradually decreases from the center of the second body 104 toward the edge of the second body 104. That is, the distance between the second cover 60 and the volute 10 gradually decreases from the center of the second cover 60 toward the edge of the second cover 60. This reduces the obstruction encountered by the airflow as it passes through this area and enters the volute 20, thereby reducing wind resistance and allowing the airflow to enter the volute 20 more smoothly, improving air intake efficiency. As the airflow approaches the edge of the second cover 60, it is directed more concentratedly and evenly, reducing eddies and turbulence, improving air intake efficiency, and reducing noise and vibration. The second partition 70 may be arc-shaped, and the second cover 60 may be hemispherical.

[0075] In some embodiments, in order to form a second noise reduction structure 90, the opposite sides of the second partition 70 are respectively fitted with the volute 10 and the second cover body 60, so that the second silencer chamber 701 is a closed chamber. After the sound waves enter the second silencer chamber 701, they will not leak, causing the sound waves to resonate, reflect, interfere and attenuate in the second silencer chamber 701, thereby reducing the energy and propagation range of the sound waves, which can effectively reduce the noise generated during the operation of the equipment and improve the user experience.

[0076] In some embodiments, the second partition 70 may be connected to the second cover 60. Of course, in other embodiments, the second partition 70 may be connected to the volute 10.

[0077] Based on the same utility model concept, the present application also proposes an air conditioner, which adopts the fan assembly. The specific structure of the fan assembly refers to the above-mentioned embodiment. Since all the technical solutions of all the above-mentioned embodiments are adopted, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0078] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0079] In addition, the descriptions of "first", "second", etc. in this application are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0080] In the description of the present utility model, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0081] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

[0082] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

[0083] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

Claims

1. A fan assembly, characterized in that: include: volute; a volute tongue connected to the volute; The first cover is provided with a plurality of first through holes; A plurality of first partitions are at least partially staggeredly arranged between the first cover and the volute tongue to form a plurality of first silencer chambers, and each of the first silencer chambers is connected to at least one of the first through holes to form a first noise reduction structure.

2. The fan assembly according to claim 1, characterized in that Along the axial direction of the volute, the height of the first noise reduction structure gradually decreases from the center of the volute tongue to the edge of the volute tongue.

3. The fan assembly according to claim 1, characterized in that The first cover and the first partitions are all located outside the volute.

4. The fan assembly according to any one of claims 1 to 3, characterized in that: The end of the volute tongue facing away from the volute is provided with a connecting piece, and the end of the first cover body has an avoidance plane for avoiding the connecting piece.

5. The fan assembly according to any one of claims 1 to 3, characterized in that: The first cover body includes a first cover portion and a second cover portion integrally formed with the first cover portion, the first cover portion is provided to cover the volute tongue, and the second cover portion is provided to cover the volute; Wherein, a plurality of the first partitions are staggeredly arranged between the first cover portion and the volute tongue and between the second cover portion and the volute casing.

6. The fan assembly according to claim 5, characterized in that: The height of the first noise reduction structure gradually decreases along a direction from the center of the second cover portion to an edge of the second cover portion.

7. The fan assembly according to claim 5, characterized in that: An air guide is provided on the edge of the volute, and the distance between the second cover and the air guide gradually increases along the axial direction of the volute.

8. The fan assembly according to claim 5, characterized in that: Two opposite sides of the first partition are respectively fitted with the volute tongue and the first cover portion, and two opposite sides of the first partition are respectively fitted with the volute and the second cover portion.

9. The fan assembly according to any one of claims 1 to 3, characterized in that: The volute comprises a first body and a second body, one end of the first body is connected to the second body, and the other end is connected to the volute tongue, the first cover is connected to the first body and / or the volute tongue, and the fan assembly further comprises: a second cover body connected to the second body and spaced apart from the first cover body, the second cover body being provided with a plurality of second through holes; A plurality of second partitions are alternately arranged between the second cover and the second body to form a plurality of second silencing cavities, and each of the second silencing cavities is communicated with at least one of the second through holes to form a second noise reduction structure.

10. The fan assembly according to claim 9, characterized in that: The second cover and the second partitions are both located outside the volute.

11. The fan assembly according to claim 9, characterized in that The height of the second noise reduction structure gradually decreases from the center of the second body to the edge of the second body.

12. An air conditioner, characterized in that: The utility model comprises a fan assembly as described in any one of claims 1 to 11.

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