Fan assembly and air duct type air conditioner with same

Abstract

The fan assembly comprises a volute and a wind wheel, an air duct and a noise reduction cavity are defined in the volute, the noise reduction cavity is communicated with the air duct through a noise reduction hole, and the wind wheel is rotatably arranged in the air duct to drive airflow in the air duct to flow; the volute comprises a shell body and a noise reduction part, the noise reduction part is arranged on the shell body, and the noise reduction part participates in defining a noise reduction cavity. According to the fan assembly provided by the embodiment of the utility model, the noise reduction cavity communicated with the air duct is defined by the volute, so that the noise generated when the fan assembly works can be reduced on the premise of not increasing the size of the whole machine, and the fan assembly has the advantages of small occupied space, low working noise and the like.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning technology, and in particular to a fan assembly and a ducted air conditioner having the same. Background Technology

[0002] The impeller in the fan assembly is generally a centrifugal impeller. Compared with the cross-flow impeller, the centrifugal impeller has a certain disadvantage in terms of noise, especially in the sleeping environment of the bedroom, where the noise generated by the operation of the centrifugal impeller is more obvious.

[0003] In the existing technology, sound-absorbing cotton is usually used to reduce the noise generated by the operation of centrifugal fan. However, sound-absorbing cotton not only increases the overall size of the fan assembly, but also cannot eliminate low-frequency noise, resulting in the fan assembly still having a large noise during operation. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a fan assembly that can reduce operating noise without increasing the overall size of the machine, thus solving the technical problem of high operating noise in existing fan assemblies.

[0005] This utility model also aims to provide a duct-type air conditioner having the above-mentioned fan components.

[0006] A fan assembly according to an embodiment of the present invention includes: a volute, wherein an air duct and a noise reduction cavity are defined within the volute, and the noise reduction cavity and the air duct are connected through a noise reduction hole; and a fan wheel, wherein the fan wheel is rotatably disposed in the air duct to drive the airflow within the air duct; wherein the volute includes a shell body and a noise reduction component, the noise reduction component is disposed in the shell body, and the noise reduction component participates in forming the noise reduction cavity.

[0007] According to the embodiment of the present invention, the fan assembly defines a noise reduction cavity within the volute and sets the noise reduction cavity to be connected to the ventilation duct through a noise reduction hole. This can reduce the noise generated by the fan assembly during operation without increasing the overall size of the unit. As a result, the fan assembly has advantages such as small footprint and low operating noise, thus improving the user experience.

[0008] In some embodiments, the flow area of ​​the noise reduction aperture is smaller than the flow area of ​​the noise reduction cavity.

[0009] In some embodiments, the noise reduction component includes a noise reduction plate disposed on the inner side of the shell body, at least a portion of the noise reduction plate being spaced apart from the shell body to form the noise reduction cavity between the noise reduction plate and the shell body, and the noise reduction hole being disposed on the noise reduction plate.

[0010] In some embodiments, the noise reduction component further includes a partition rib located between the noise reduction plate and the shell body to form a plurality of noise reduction cavities between the noise reduction plate and the shell body, each noise reduction cavity communicating with the air duct through at least one noise reduction hole.

[0011] In some embodiments, the number of the partition ribs is multiple, and the multiple partition ribs are arranged at intervals; or, the number of the partition ribs is multiple, and includes at least one first rib and at least one second rib, the first rib and the second rib being arranged at an angle.

[0012] In some embodiments, one of the noise reduction plate and the shell body is integrally formed with the partition rib, and the other is in a stop-fitting relationship with the partition rib.

[0013] In some embodiments, the inner side of the shell body is provided with a mounting cavity, the mounting cavity has a first opening and the first opening communicates between the mounting cavity and the air duct, and the noise reduction plate is disposed in the mounting cavity.

[0014] In some embodiments, a stop portion is further provided on the inner side of the shell body, and the stop portion stops the noise reduction plate on the side away from the noise reduction cavity.

[0015] In some embodiments, the stop portion is located at the first opening and forms a stop rib protruding from the cavity wall of the mounting cavity.

[0016] In some embodiments, a stop countersunk platform is provided on the cavity wall of the mounting cavity near the first opening, the stop countersunk platform is disposed opposite to the stop rib, and the noise reduction plate is located between the stop countersunk platform and the stop rib.

[0017] In some embodiments, the cavity wall of the mounting cavity is provided with a slot near the first opening, at least a portion of the noise reduction plate is inserted into the slot, and the stop portion is a groove wall forming the slot away from the noise reduction cavity.

[0018] In some embodiments, the mounting cavity further has a second opening, which is adjacent to and communicates with the first opening; wherein the stop extends circumferentially along the first opening, and both ends of the stop extend to the edge of the first opening near the two ends of the second opening, and the noise reduction plate is adapted to be inserted into the mounting cavity from the second opening.

[0019] In some embodiments, the noise reduction component is detachably coupled to the housing body.

[0020] In some embodiments, one of the noise reduction component and the housing body is provided with a buckle, and the other is provided with a slot, the buckle being engaged in the slot.

[0021] In some embodiments, the volute further includes a noise reduction mesh disposed within the air duct and fixed to the wall where the noise reduction hole is located. The mesh openings of the noise reduction mesh connect the noise reduction hole and the air duct, and the aperture of the mesh openings is smaller than the aperture of the noise reduction hole.

[0022] In some embodiments, the noise reduction element includes a plurality of elements arranged circumferentially along the air duct, at least one of the noise reduction elements is disposed on the inner side of the shell body, and the noise reduction element at least partially forms the volute tongue of the volute shell.

[0023] In some embodiments, the volute includes a first housing and a second housing disposed opposite to each other, defining the air duct between the first housing and the second housing, the first housing including the housing body and the noise reduction element.

[0024] A ducted air conditioner according to an embodiment of the present invention includes: a housing; a partition, the partition being disposed within the housing to divide the inner cavity of the housing into a heat exchange cavity and a fan cavity; a heat exchanger, the heat exchanger being disposed within the heat exchange cavity; and a fan assembly, the fan assembly being the aforementioned fan assembly, the fan assembly being disposed within the fan cavity.

[0025] According to the embodiments of the present invention, by adopting the aforementioned fan assembly, the noise generated by the ducted air conditioner during operation can be reduced without increasing the overall size of the ducted air conditioner, thereby improving the user experience.

[0026] Additional aspects and advantages of this invention will become apparent from the description which follows, or may be learned by practice of this invention. Attached Figure Description

[0027] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0028] Figure 1 This is a schematic diagram of a duct-type air conditioner according to some embodiments of the present invention.

[0029] Figure 2 This is a schematic diagram of a duct-type air conditioner according to some embodiments of the present invention, with the outer casing removed.

[0030] Figure 3 for Figure 2 Exploded view of the middle section of the structure.

[0031] Figure 4 This is a top view of the first housing in a fan assembly according to some embodiments of the present invention.

[0032] Figure 5 for Figure 4 A sectional view along line AA.

[0033] Figure 6 for Figure 5 A magnified view of region I in the middle.

[0034] Figure 7 for Figure 6 Enlarged view of region II.

[0035] Figure 8 This is an exploded view of the first housing in a fan assembly according to some embodiments of the present invention.

[0036] Figure 9 for Figure 8 A diagram from another angle.

[0037] Figure 10 This is a schematic diagram of a noise reduction board according to some embodiments of the present invention.

[0038] Figure 11 This is a schematic diagram showing the cooperation between the noise reduction cavity and the noise reduction hole in some embodiments of this utility model.

[0039] Figure label:

[0040] 1000. Ductless air conditioner;

[0041] 100. Fan components;

[0042] 110. Snail shell;

[0043] 111. Air duct;

[0044] 112. Noise reduction cavity;

[0045] 113. Noise reduction hole;

[0046] 114. Shell body;

[0047] 1141. Mounting cavity; 1144. First opening;

[0048] 1142. Stop section; 1143. Stop countersunk platform;

[0049] 115. Noise reduction components;

[0050] 1151. Noise reduction board;

[0051] 1152. Dividing bar; 1153. First raised bar; 1154. Second raised bar;

[0052] 116. First shell;

[0053] 117. Second shell;

[0054] 118. Cochlear tongue;

[0055] 200. Outer casing;

[0056] 300. Separator. Detailed Implementation

[0057] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0058] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0059] When a ducted air conditioner is in operation, the rotating impeller draws in outside air, pressurizes it, and then sends it into the room, creating a circulation. During this process, the high-speed rotation of the impeller causes the airflow to interact with the relatively stationary airflow behind the blades due to the viscous friction of the air molecules. This creates vortex-like airflow in the downstream area of ​​the blades. These vortices constantly change and detach. The pressure at the center of each vortex is lower than the pressure of the surrounding medium. When a vortex detaches, a pressure jump occurs in the turbulent airflow. These pressure jumps propagate outward through the surrounding medium and act on the blades. When the pressure pulsations in the turbulence contain audible frequency components and are sufficiently strong, they radiate noise, forming turbulent noise.

[0060] Meanwhile, when the wind turbine rotates, the blades sweep across the air in the vicinity. Due to the reciprocity of forces, the gas medium is affected by the blades, generating a periodic pressure field that produces noise. When the airflow passes over the blades, the boundary layers of the suction and pressure surfaces merge at the trailing edge to form a wake region. In the wake region, the pressure and velocity of the airflow are much lower than in the mainstream region. When the wind turbine rotates, the airflow in the blade exit region is highly non-uniform. This non-uniform potential flow field periodically acts on surrounding obstacles, producing noise similar to strumming a string to make a sound. This increases the noise generated during the operation of the ducted air conditioner and reduces the user experience.

[0061] To address the aforementioned issues, existing methods typically involve installing sound-absorbing cotton inside ducted air conditioners. This cotton usually has a porous structure, and when sound waves enter these pores, they rub against the air inside, converting sound energy into heat energy to absorb mid-to-high frequency sound energy and achieve noise reduction.

[0062] However, since sound-absorbing cotton is a solid material with a porous structure, not a pure solid material, and because low-frequency noise has a relatively long wavelength, it can easily bypass the sound-absorbing cotton and continue to propagate. As a result, the sound-absorbing cotton has limited absorption of low-frequency noise, which leads to a relatively large noise level in ducted air conditioners during operation.

[0063] To address the aforementioned problems, this application proposes a fan assembly 100.

[0064] The fan assembly 100 of this utility model is described below with reference to the accompanying drawings.

[0065] Combine Figure 1 , Figure 2 and Figure 3 As shown, a fan assembly 100 according to an embodiment of the present invention includes: a volute 110 and a fan wheel (not shown in the figure).

[0066] Among them, combined Figures 2-6 As shown, the volute 110 defines an air duct 111 and a noise reduction cavity 112, which are connected by a noise reduction hole 113. This allows the noise reduction cavity 112 and the air duct 111 to work together and connect. When airflow occurs in the air duct 111, noise within the air duct 111 can enter the noise reduction cavity 112 through the noise reduction hole 113. This facilitates the absorption of noise of a specific frequency by utilizing the noise reduction hole 113 and the noise reduction cavity 112 in conjunction, thereby achieving noise reduction.

[0067] In some embodiments, the noise reduction hole 113 is disposed between the noise reduction cavity 112 and the air duct 111 and is connected to the noise reduction cavity 112 and the air duct 111 respectively, so as to realize the connection between the noise reduction cavity 112 and the air duct 111 by using the noise reduction hole 113, thereby reducing the connection difficulty between the noise reduction cavity 112 and the air duct 111.

[0068] It is worth noting that this application directly utilizes the volute 110 to define the noise reduction cavity 112, which not only reduces the molding difficulty of the noise reduction cavity 112, but also avoids setting up a separate structural component to form the noise reduction cavity 112. This helps to simplify the structure of the fan assembly 100, reduce the manufacturing difficulty and manufacturing cost of the fan assembly 100, and also avoids increasing the size of the fan assembly 100. This achieves the goal of reducing the noise generated by the fan assembly 100 during operation without increasing the overall size of the fan assembly 100, giving the fan assembly 100 advantages such as small footprint and low operating noise.

[0069] The impeller is rotatably mounted on the air duct 111 to drive the airflow within the air duct 111. In this way, the impeller can be used to introduce air from outside the air duct 111 into the air duct 111 through one side and to exhaust air from inside the air duct 111 through the other side, facilitating air circulation and thus enabling the delivery of air at a specific temperature into the room to regulate the indoor temperature and, to a certain extent, ensure the working performance of the fan assembly 100.

[0070] It should be noted that noise is generated during the rotation of the wind turbine and the flow of air. In order to reduce noise, this application uses the volute 110 to define the noise reduction cavity 112 and sets the noise reduction cavity 112 to be connected to the air duct 111 so that the noise reduction hole 113 and the noise reduction cavity 112 can work together to absorb the noise generated during the rotation of the wind turbine and the flow of air, thereby achieving the purpose of noise reduction.

[0071] In a specific example, during the rotation of the wind turbine and the flow of air, sound waves can enter the noise reduction cavity 112 through the noise reduction hole 113. When the sound waves enter the noise reduction cavity 112, they will collide with the cavity wall of the noise reduction cavity 112 and be reflected. These reflected sound waves will interfere with the incident sound waves to form a complex sound field distribution. At certain frequencies, the noise reduction cavity 112 will produce a resonance effect, which will cause the sound waves to be attenuated in the noise reduction cavity 112, thereby achieving the noise reduction effect.

[0072] Among them, combined Figure 4 , Figure 5 and Figure 6 As shown, the volute 110 includes a shell body 114 and a noise reduction component 115. The noise reduction component 115 is disposed on the shell body 114 and participates in forming the noise reduction cavity 112. This can also be understood as the noise reduction cavity 112 being defined by the noise reduction component 115. For example, the noise reduction cavity 112 can be defined by the shell body 114 and the noise reduction component 115 in combination; or, the noise reduction cavity 112 can be defined solely by the noise reduction component 115. This allows the volute 110 to define the noise reduction cavity 112, reducing the molding difficulty of the noise reduction cavity 112 and enabling the volute 110 itself to define the noise reduction cavity 112. To a certain extent, this avoids the need for additional structural components to form the noise reduction cavity 112, thereby avoiding an increase in the size of the fan assembly 100. This achieves a reduction in the noise generated by the fan assembly 100 during operation without increasing the overall size of the unit, resulting in advantages such as small footprint and low operating noise, thus improving the user experience.

[0073] As can be seen from the above structure, the fan assembly 100 of this utility model embodiment, by setting the volute 110 to include the shell body 114 and the noise reduction component 115, and setting the noise reduction component 115 to participate in forming the noise reduction cavity 112, can realize the noise reduction cavity 112 defined by the volute 110. On the one hand, it can reduce the molding difficulty of the noise reduction cavity 112, and on the other hand, it can avoid setting a separate structural component to form the noise reduction cavity 112, simplifying the structure of the fan assembly 100, thereby reducing the manufacturing difficulty and manufacturing cost of the fan assembly 100, and avoiding increasing the size of the fan assembly 100, so that the fan assembly 100 has the advantage of small space occupation.

[0074] Meanwhile, the noise reduction cavity 112 and the air duct 111 are connected through the noise reduction hole 113. This allows sound waves in the air duct 111 to enter the noise reduction cavity 112 during the rotation of the impeller and the flow of air. The noise reduction hole 113 and the noise reduction cavity 112 work together to absorb the noise generated during the rotation of the impeller and the flow of air, thereby reducing the noise generated by the fan assembly 100 during operation. This gives the fan assembly 100 the advantage of low operating noise and improves the user experience.

[0075] Understandably, compared to the prior art, the fan assembly 100 of this application uses the volute 110 itself to define the noise reduction cavity 112, and sets the noise reduction cavity 112 to be connected to the ventilation duct 111 through the noise reduction hole 113. This not only allows the noise reduction cavity 112 to reduce noise during the rotation of the impeller and during the flow of air, but also reduces the molding difficulty of the noise reduction cavity 112 and simplifies the structure of the noise reduction cavity 112. This achieves the reduction of the noise generated by the fan assembly 100 during operation without increasing the overall size of the fan assembly 100, giving the fan assembly 100 advantages such as small space occupation and low operating noise.

[0076] In some embodiments, combined with Figure 5 and Figure 6 As shown, the flow area of ​​the noise reduction aperture 113 is smaller than that of the noise reduction cavity 112. This allows the noise reduction aperture 113 and the noise reduction cavity 112 to be fitted together in a manner similar to a Helmholtz resonator (e.g., Figure 11As shown in the diagram, when air flows into the noise reduction cavity 112 from the noise reduction hole 113, the flow area of ​​the noise reduction cavity 112 is larger than that of the noise reduction hole 113. This results in the air velocity within the noise reduction cavity 112 being much lower than the velocity of the localized airflow in the center of the noise reduction cavity 112. Consequently, a relatively intense shear flow forms within the noise reduction cavity 112, accompanied by unstable disturbance waves. Simultaneously, if the air column in the noise reduction hole 113 is disturbed and moves into the noise reduction cavity 112, the noise reduction cavity 112... When the internal gas is compressed, the pressure increases. At this time, the air in the noise reduction hole 113 is blocked from moving inward and moves outward instead. After passing the equilibrium position, it continues to move outward due to inertia, which reduces the pressure in the noise reduction cavity 112. This causes the air column in the noise reduction hole 113 to stop moving outward and then move inward again. This cycle repeats. When the frequency of the disturbance wave matches the frequency of the incoming airflow, a resonance phenomenon is formed, thereby reducing or eliminating noise, achieving the purpose of noise reduction, and improving the noise reduction effect.

[0077] It should be noted that the resonant frequency of the Helmholtz resonator depends on the geometry and volume of the resonator. Therefore, the flow area of ​​the noise reduction hole 113 and / or the flow area of ​​the noise reduction cavity 112 can be adjusted by the noise frequency to be eliminated.

[0078] In other words, the combination of noise reduction hole 113 and noise reduction cavity 112 can absorb noise of a specific frequency. This allows the noise reduction hole 113 and noise reduction cavity 112 to absorb low-frequency noise, thereby reducing noise to a certain extent and improving the user experience.

[0079] Among them, the noise frequency to be eliminated S is the cross-sectional area of ​​noise reduction aperture 113, S=πr 2 r = D / 2; V is the volume of the noise reduction cavity 112; L is the length of the noise reduction aperture 113 (see diagram for details). Figure 11 ).

[0080] Based on this, in a specific example, the absorption of low-frequency noise by noise reduction cavity 112 can be achieved by adjusting S, V or L.

[0081] In some embodiments, combined with Figures 3-8 As shown, the noise reduction component 115 includes a noise reduction plate 1151, which is disposed inside the shell body 114. At least a portion of the noise reduction plate 1151 is spaced apart from the shell body 114, so that a noise reduction cavity 112 is formed between the noise reduction plate 1151 and the shell body 114. A noise reduction hole 113 is disposed on the noise reduction plate 1151. That is to say, the noise reduction cavity 112 of this application is formed by the cooperation of the noise reduction plate 1151 and the shell body 114, so as to realize the use of the volute 110 to define the noise reduction cavity 112 and reduce the molding difficulty of the noise reduction cavity 112.

[0082] Meanwhile, since the noise reduction plate 1151 is located inside the shell body 114 and the air duct 111 is defined inside the volute 110, by setting the noise reduction hole 113 on the noise reduction plate 1151, the noise reduction hole 113 can be set between the noise reduction cavity 112 and the air duct 111, so as to facilitate the connection between the noise reduction cavity 112 and the air duct 111 by using the noise reduction hole 113, thereby reducing the difficulty of connecting the noise reduction cavity 112 and the air duct 111.

[0083] It should be noted that, since the air duct 111 is formed inside the volute 110 and the wind speed is relatively high, by placing the noise reduction plate 1151 inside the shell body 114, the noise reduction plate 1151 and the noise reduction cavity 112 can be formed inside the air duct 111. Through the above arrangement: firstly, the noise reduction cavity 112 can effectively reduce noise and improve the noise reduction effect; secondly, the noise reduction plate 1151 can avoid occupying the space outside the air duct 111, further avoiding increasing the size of the fan assembly 100; and thirdly, the shell body 114 can protect the noise reduction plate 1151 and extend the service life of the noise reduction plate 1151.

[0084] Of course, in some other embodiments, the noise reduction plate 1151 may also be provided on the outside of the shell body 114 (not shown in the example figure) to reduce the difficulty of fixing the noise reduction plate 1151.

[0085] It should be noted that when the noise reduction plate 1151 is located on the outside of the shell body 114, the noise reduction hole 113 is located on the shell body 114, so that the noise reduction hole 113 can be located between the noise reduction cavity 112 and the air duct 111, so that the noise reduction cavity 112 and the air duct 111 can be connected by using the noise reduction hole 113.

[0086] In some embodiments, combined with Figure 5 , Figure 6 and Figure 9 As shown, the noise reduction component 115 also includes a partition rib 1152, which is located between the noise reduction plate 1151 and the shell body 114 to form a plurality of noise reduction cavities 112 between the noise reduction plate 1151 and the shell body 114. Each noise reduction cavity 112 is connected to the air duct 111 through at least one noise reduction hole 113. This means that each noise reduction cavity 112 is connected to the air duct 111 through one noise reduction hole 113, or through multiple noise reduction holes 113, so that sound waves can effectively enter the noise reduction cavity 112, thereby achieving the purpose of noise reduction using the noise reduction cavity 112.

[0087] It should be noted that the wavelength range of a single Helmholtz resonator is too narrow. Therefore, this application forms multiple noise reduction cavities 112 between the noise reduction plate 1151 and the shell body 114. The multiple noise reduction cavities 112 can be combined to form a combination of multiple Helmholtz resonators, so as to absorb noise of specific frequencies and improve the noise reduction effect.

[0088] In addition, by setting a partition rib 1152 between the noise reduction plate 1151 and the shell body 114 to form multiple noise reduction cavities 112, the molding difficulty of multiple noise reduction cavities 112 can be reduced, thereby reducing the noise reduction difficulty of the fan assembly 100.

[0089] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0090] In some embodiments, combined with Figure 4 , Figure 5 and Figure 9 As shown, there are multiple partition ribs 1152, which are arranged at intervals. This facilitates the formation of multiple noise reduction cavities 112 between the noise reduction plate 1151 and the shell body 114, reducing the molding difficulty of the multiple noise reduction cavities 112.

[0091] The multiple dividing ribs 1152 mentioned here can be understood as multiple ribs arranged at intervals in the same direction.

[0092] In other embodiments, combined with Figure 9 and Figure 10 As shown, there are multiple partition ribs 1152, each partition rib 1152 including at least one first rib 1153 and at least one second rib 1154, the first rib 1153 and the second rib 1154 being arranged at an angle. In this way, multiple partition ribs 1152 can be used to form a large number of noise reduction cavities 112 between the noise reduction plate 1151 and the shell body 114, which not only reduces the molding difficulty of multiple noise reduction cavities 112, but also improves the noise reduction effect.

[0093] In the description of this utility model, features defined as "first" and "second" may explicitly or implicitly include one or more of the features, used to distinguish and describe features, without any order or importance.

[0094] In some embodiments, combined with Figure 5 , Figure 8 and Figure 9 As shown, one of the noise-reducing plate 1151 and the shell body 114 is integrally formed with the partition rib 1152, and the other is in a stop-fitting engagement with the partition rib 1152. This means that when the noise-reducing plate 1151 and the partition rib 1152 are integrally formed, the shell body 114 and the partition rib 1152 are in a stop-fitting engagement; or, when the shell body 114 and the partition rib 1152 are integrally formed, the noise-reducing plate 1151 and the partition rib 1152 are in a stop-fitting engagement. This reduces the difficulty of forming the partition rib 1152 while allowing the opposite ends of the partition rib 1152 to respectively stop-fit ​​with the noise-reducing plate 1151 and the shell body 114. This ensures the sealing of each noise-reducing cavity 112 after assembly, thereby guaranteeing the noise-reducing effect of the noise-reducing cavity 112.

[0095] In some embodiments, combined with Figure 8 , Figure 9 and Figure 10 As shown, the noise reduction plate 1151 and the partition rib 1152 are integrally formed. Because the noise reduction plate 1151 is processed by separate injection molding, the molding difficulty of the partition rib 1152 can be reduced. At the same time, the noise reduction plate 1151 can also be used to support the partition rib 1152, improve the positional stability of the partition rib 1152, and ensure the performance of the partition rib 1152 to a certain extent.

[0096] In other embodiments, the noise reduction plate 1151 is integrally formed with the shell body 114 (not shown in this example figure).

[0097] In some embodiments, combined with Figure 4 and Figure 8 As shown, the inner side of the shell body 114 is provided with a mounting cavity 1141, and the mounting cavity 1141 has a first opening 1144 (the specific structure of the first opening 1144 can be found in [reference]). Figure 6 and Figure 7 The first opening 1144 connects the mounting cavity 1141 and the air duct 111, and the noise reduction plate 1151 is disposed inside the mounting cavity 1141. Since the mounting cavity 1141 is located inside the shell body 114, placing the noise reduction plate 1151 inside the mounting cavity 1141 can achieve the goal of placing the noise reduction plate 1151 inside the shell body 114, reducing the assembly difficulty of the noise reduction plate 1151 and the shell body 114.

[0098] Meanwhile, by setting the mounting cavity 1141 to have a first opening 1144 and setting the first opening 1144 to connect the mounting cavity 1141 and the air duct 111, the noise reduction hole 113 on the noise reduction plate 1151 in the mounting cavity 1141 can be connected to the air duct 111, so as to realize the cooperation and connection between the noise reduction cavity 112 and the air duct 111, thereby facilitating the use of the noise reduction hole 113 and the noise reduction cavity 112 to cooperate in noise reduction.

[0099] In addition, by setting the mounting cavity 1141, the installation position of the noise reduction plate 1151 can be located, reducing the installation difficulty of the noise reduction plate 1151.

[0100] In some embodiments, combined with Figure 5 , Figure 6 and Figure 8 As shown, at least part of the inner wall surface of the shell body 114 is recessed in the direction away from the air duct 111 to form the mounting cavity 1141, which reduces the molding difficulty of the mounting cavity 1141 and makes it easier to set the mounting cavity 1141 with a first opening 1144.

[0101] In some embodiments, combined with Figure 6 , Figure 7 and Figure 8 As shown, the mounting cavity 1141 has a bottom wall facing the first opening 1144 and a side wall connecting the bottom wall of the mounting cavity 1141 and the first opening 1144. The noise reduction plate 1151 is disposed in the mounting cavity 1141, and one end of the noise reduction plate 1151 is abutted against the side wall of the mounting cavity 1141 to increase the contact area between the noise reduction plate 1151 and the mounting cavity 1141, thereby improving the positional stability of the noise reduction plate 1151.

[0102] In some embodiments, the noise reduction plate 1151 may be disposed within the mounting cavity 1141 through the first opening 1144.

[0103] In some embodiments, combined with Figure 6 , Figure 7 and Figure 8 As shown, the recess depth of the mounting cavity 1141 is greater than or equal to the thickness of the noise reduction plate 1151. In this way, when the noise reduction plate 1151 is located inside the mounting cavity 1141, it can prevent the noise reduction plate 1151 from protruding from the mounting cavity 1141 to a certain extent, thereby avoiding noise caused by the protrusion of the noise reduction plate 1151 and further reducing the noise generated by the fan assembly 100 during operation.

[0104] In some embodiments, combined with Figures 4-8 As shown, a stop portion 1142 is also provided on the inner side of the shell body 114, and the stop portion 1142 stops the noise reduction plate 1151 on the side away from the noise reduction cavity 112. This is to fix the noise reduction plate 1151 by using the stop portion 1142, improve the positional stability of the noise reduction plate 1151, and ensure the working performance of the noise reduction plate 1151 to a certain extent.

[0105] In some embodiments, combined with Figures 4-8 As shown, the stop portion 1142 is located at the first opening 1144, and the stop portion 1142 forms a stop rib protruding from the cavity wall of the mounting cavity 1141 (the specific structure of the stop rib can be found in [reference]). Figure 6 and Figure 7 When the noise reduction plate 1151 is placed in the mounting cavity 1141, the stop rib can stop the noise reduction plate 1151 on the side away from the noise reduction cavity 112, so as to fix the noise reduction plate 1151 by using the stop part 1142 and improve the positional stability of the noise reduction plate 1151.

[0106] Meanwhile, since the stop part 1142 is located at the first opening 1144, the stop rib stops the noise reduction plate 1151 on the side away from the noise reduction cavity 112. This also allows the stop rib to cover the side wall of the noise reduction plate 1151 and the mounting cavity 1141, thereby sealing the gap between the noise reduction plate 1151 and the side wall of the mounting cavity 1141. This seals the noise reduction cavity 112 and, to a certain extent, prevents gas from entering the noise reduction cavity 112 through the gap between the noise reduction plate 1151 and the side wall of the mounting cavity 1141, thus further reducing the noise generated by the fan assembly 100 during operation.

[0107] In some embodiments, combined with Figure 5 , Figure 6 and Figure 7 As shown, a stop countersunk platform 1143 is provided on the cavity wall of the mounting cavity 1141 near the first opening 1144. The stop countersunk platform 1143 is arranged opposite to the stop rib, and the noise reduction plate 1151 is located between the stop countersunk platform 1143 and the stop rib. In this way, the stop countersunk platform 1143 and the stop rib can be used to fix the noise reduction plate 1151, effectively improving the positional stability of the noise reduction plate 1151. On the other hand, the stop countersunk platform 1143 and the stop rib can also be used to block the gap between the noise reduction plate 1151 and the mounting cavity 1141, further preventing gas from entering the noise reduction cavity 112 through the gap between the noise reduction plate 1151 and the mounting cavity 1141 and generating noise.

[0108] Of course, in some other embodiments, the stop countersunk platform 1143 may not be provided on the cavity wall of the mounting cavity 1141 near the first opening 1144. Instead, the side wall of the mounting cavity 1141 may be set to extend at an angle relative to the noise reduction plate 1151 (e.g., in the direction from the first opening 1144 towards the bottom wall of the mounting cavity 1141, the side wall of the mounting cavity 1141 extends at an angle toward the interior of the mounting cavity 1141). This is to facilitate the use of the side wall of the mounting cavity 1141 to support the noise reduction plate 1151, improve the positional stability of the noise reduction plate 1151, and eliminate the need for the stop countersunk platform 1143, thereby reducing the molding difficulty of the mounting cavity 1141.

[0109] With the above configuration, in some embodiments, a mounting cavity 1141 can be first formed on the inner side of the shell body 114, and then a stop portion 1142 can be provided on the inner side of the shell body 114. The stop portion 1142 is provided at the first opening 1144, so that the stop portion 1142 forms a stop rib protruding from the side wall of the mounting cavity 1141. In this way, when the noise reduction plate 1151 is provided in the mounting cavity 1141, the stop portion 1142 can be stopped on the side of the noise reduction plate 1151 away from the noise reduction cavity 112.

[0110] In some embodiments, the stop portion 1142 is integrally formed with the shell body 114. This reduces the molding difficulty of the stop portion 1142 and improves the positional stability of the stop portion 1142.

[0111] In some embodiments, the cavity wall of the mounting cavity 1141 is provided with a slot near the first opening 1144, at least a portion of the noise reduction plate 1151 is inserted into the slot, and the stop portion 1142 is formed as a groove wall of the slot away from the noise reduction cavity 112. This also allows the stop portion 1142 to stop the noise reduction plate 1151 on the side away from the noise reduction cavity 112, and makes the stop portion 1142 located at the first opening 1144 and block the gap between the noise reduction plate 1151 and the side wall of the mounting cavity 1141.

[0112] With the above configuration, in some embodiments, a mounting cavity 1141 can be formed on the inner side of the shell body 114 first, and then a slot can be opened on the cavity wall of the mounting cavity 1141 near the first opening 1144. After the slot is formed, the stop part 1142 can be formed on the slot wall away from the noise reduction cavity 112, and the stop part 1142 is located at the first opening 1144, reducing the difficulty of forming the stop part 1142. In this way, when the noise reduction plate 1151 is located in the mounting cavity 1141, the stop part 1142 can be stopped on the side of the noise reduction plate 1151 away from the noise reduction cavity 112.

[0113] In some embodiments, the mounting cavity 1141 further has a second opening, which is adjacent to and communicates with the first opening 1144. A stop portion 1142 extends circumferentially along the first opening 1144, and both ends of the stop portion 1142 extend to the edges of the first opening 1144 near the two ends of the second opening. The noise reduction plate 1151 is adapted to be inserted into the mounting cavity 1141 from the second opening. This reduces the assembly difficulty of the noise reduction plate 1151 by placing it in the mounting cavity 1141.

[0114] Meanwhile, by setting the stop portion 1142 to extend circumferentially along the first opening 1144, and extending both ends of the stop portion 1142 to the edges of the first opening 1144 near the ends of the second opening, it is beneficial to increase the extension length of the stop portion 1142. On the one hand, the stop portion 1142 can effectively fix the noise reduction plate 1151 and improve the positional stability of the noise reduction plate 1151. On the other hand, the stop portion 1142 can effectively seal the gap between the noise reduction plate 1151 and the side wall of the mounting cavity 1141, thereby sealing the multiple noise reduction cavities 112, improving the sealing effect of the multiple noise reduction cavities 112, and thus improving the noise reduction effect of the multiple noise reduction cavities 112.

[0115] In some embodiments, the noise reduction component 115 is detachably coupled to the shell body 114. This means that the noise reduction component 115 is disposed on the shell body 114 and forms a detachable fit with the shell body 114. This reduces the difficulty of assembling the noise reduction component 115 and the shell body 114, improving assembly efficiency. Furthermore, it allows the noise reduction component 115 and the shell body 114 to be formed as two independent parts, enabling them to be processed and molded separately during production. This reduces the molding difficulty of the noise reduction component 115 and the shell body 114, and helps ensure the quality of the noise reduction component 115 and the shell body 114, thereby improving their performance.

[0116] In some embodiments, after the noise reduction component 115 and the shell body 114 are injection molded separately, the noise reduction plate 1151 is placed in the mounting cavity 1141 of the shell body 114 to assemble them into a whole, which facilitates the formation of the noise reduction cavity 112.

[0117] In some embodiments, one of the noise-reducing component 115 and the housing body 114 is provided with a buckle, and the other is provided with a slot, with the buckle engaging in the slot. This means that when the noise-reducing component 115 has a buckle, the housing body 114 has a slot; when the housing body 114 has a buckle, the noise-reducing component 115 has a slot, with the buckle engaging in the slot, thereby achieving a snap-fit ​​engagement between the noise-reducing component 115 and the housing body 114. This also enables a detachable engagement between the noise-reducing component 115 and the housing body 114, making installation of the noise-reducing component 115 and the housing body 114 convenient, reducing assembly difficulty, and improving assembly efficiency.

[0118] In some embodiments, the noise reduction component 115 is provided with a buckle, and the housing body 114 is provided with a slot.

[0119] In other embodiments, the shell body 114 is provided with a buckle, and the noise reduction component 115 is provided with a slot.

[0120] Of course, in some other embodiments, both the noise reduction component 115 and the housing body 114 may be provided with buckles and slots.

[0121] In some embodiments, the number of buckles and slots includes multiple buckles and multiple slots that cooperate one by one, which helps to increase the connection strength between the noise reduction component 115 and the shell body 114, so that the noise reduction component 115 and the shell body 114 form a stable connection. This helps to form a structurally stable noise reduction cavity 112 and improve the noise reduction effect.

[0122] In some embodiments, the volute 110 further includes a noise reduction mesh (not shown in the figure), which is disposed in the air duct 111 and fixed on the wall where the noise reduction hole 113 is located. The mesh of the noise reduction mesh connects the noise reduction hole 113 and the air duct 111, and the aperture of the mesh is smaller than the aperture of the noise reduction hole 113.

[0123] It should be noted that because the noise reduction hole 113 is located on the noise reduction plate 1151, and the noise reduction plate 1151 is located on the inner side of the shell body 114, the wind speed at the location of the noise reduction hole 113 is relatively high. When the noise reduction hole 113 is directly connected to the ventilation duct 111, a whistling sound will be generated when the high-speed wind blows through the noise reduction hole 113, which will affect the noise reduction effect of the noise reduction component 115.

[0124] Based on this, this application sets a noise reduction mesh on the wall where the noise reduction hole 113 is located, and sets the aperture of the noise reduction mesh to be smaller than the aperture of the noise reduction hole 113. While realizing the connection between the noise reduction hole 113 and the air duct 111, the noise reduction mesh can also be used to eliminate whistling sounds, thereby improving the noise reduction effect of the noise reduction component 115 and reducing the noise generated by the fan assembly 100 during operation.

[0125] Of course, in some other embodiments, the whistling sound can also be reduced by reducing the aperture of the noise reduction hole 113. However, if the aperture of the noise reduction hole 113 is too small, it will increase the difficulty of forming the noise reduction hole 113. Therefore, this application can adaptably increase the size of the noise reduction hole 113 by setting a noise reduction mesh on the wall where the noise reduction hole 113 is located, thereby reducing the difficulty of forming the noise reduction hole 113.

[0126] Therefore, the above can also be understood as follows: by setting up a noise reduction mesh, the difficulty of forming the noise reduction hole 113 can be reduced, while the whistling sound can also be reduced.

[0127] In some embodiments, the aperture of the noise reduction hole 113 is 1mm-1.5mm. This reduces the difficulty of molding the noise reduction hole 113 and enables effective elimination of whistling sounds after the noise reduction mesh is applied.

[0128] In some embodiments, the noise reduction mesh is integrally formed on the wall where the noise reduction holes 113 are located. For example, an in-mold injection molding process is used to cover the wall where the noise reduction holes 113 are located to reduce the difficulty of fixing the noise reduction mesh to the wall where the noise reduction holes 113 are located and to improve the fixing strength, thereby improving the positional stability of the noise reduction mesh and helping to ensure the noise reduction effect of the noise reduction mesh.

[0129] In a specific example, the noise reduction mesh and the noise reduction plate 1151 are integrally molded using an in-mold injection molding process.

[0130] In other embodiments, the noise reduction mesh may also be connected to the wall where the noise reduction hole 113 is located by means of welding, bonding or snap-fitting, and no specific limitation is made here.

[0131] In some embodiments, the noise reduction mesh may be made of materials such as nylon or non-woven fabric.

[0132] In some embodiments, combined with Figure 3 , Figure 4 and Figure 8 As shown, the noise reduction element 115 includes multiple elements arranged circumferentially along the air duct 111. At least one noise reduction element 115 is located inside the shell body 114, and this noise reduction element 115 at least partially forms the volute tongue 118 of the volute 110. By including multiple noise reduction elements 115 and arranging them circumferentially along the air duct 111, it is beneficial to use multiple noise reduction elements 115 in conjunction to reduce noise and improve the noise reduction effect.

[0133] Meanwhile, by setting at least a portion of one of the noise reduction components 115 located inside the shell body 114 as the volute tongue 118 forming the volute shell 110, the molding difficulty of the volute tongue 118 can be reduced.

[0134] It should be noted that when the airflow passes through the volute tongue 118, vortices are easily formed at the trailing edge of the volute tongue 118, which increases the noise at the airflow outlet. By setting at least a portion of the noise reduction component 115 to form the volute tongue 118 of the volute shell 110, the noise reduction cavity 112 defined by the noise reduction component 115 can be set close to the volute tongue 118, thereby facilitating the absorption of noise at the airflow outlet by the noise reduction cavity 112 and improving the noise reduction effect.

[0135] In other words, by setting at least a portion of one of the noise reduction components 115 located inside the shell body 114 to form the volute tongue 118 of the volute 110, the molding difficulty of the volute tongue 118 can be reduced, and the noise at the airflow outlet of the volute 110 can be reduced, thereby improving the noise reduction effect and further reducing the noise generated by the fan assembly 100 during operation, so that the fan assembly 100 has the advantage of low operating noise.

[0136] In some embodiments, combined with Figure 2 , Figure 3 and Figure 4 As shown, the volute 110 includes a first housing 116 and a second housing 117 disposed opposite to each other, defining an air duct 111 between the first housing 116 and the second housing 117. The first housing 116 includes a housing body 114 and a noise reduction component 115. By configuring the volute 110 as a first housing 116 and a second housing 117, and utilizing the cooperation of the first housing 116 and the second housing 117 to define the air duct 111, the molding difficulty of the volute 110 and the air duct 111 can be reduced.

[0137] Meanwhile, by configuring the first housing 116 to include the housing body 114 and the noise reduction component 115, the noise reduction cavity 112 and the noise reduction hole 113 communicating with the noise reduction cavity 112 can be defined by the structure of the volute 110 itself, thereby reducing the noise generated by the fan assembly 100 during operation without increasing the overall size of the machine, thus giving the fan assembly 100 advantages such as small space occupation and low operating noise.

[0138] In some embodiments, combined with Figure 1 , Figure 2 and Figure 3 As shown, the first housing 116 is located below the second housing 117, so that the first housing 116 is formed as the lower volute and the second housing 117 is formed as the upper volute. When the first housing 116 is configured to include the housing body 114 and the noise reduction component 115, it is convenient to use at least a portion of the noise reduction component 115 to form the volute tongue 118 of the volute 110. While reducing the difficulty of forming the volute tongue 118, it also allows the noise reduction cavity 112 to be located close to the volute tongue 118, thereby improving the noise reduction effect of the noise reduction cavity 112.

[0139] In some embodiments, the first housing 116 and the second housing 117 are connected to form a volute 110, ensuring the structural stability of the volute 110 and, to a certain extent, guaranteeing the working performance of the volute 110.

[0140] The first housing 116 and the second housing 117 can be detachably connected (e.g., bolted connection, snap-fit, etc.) to reduce the assembly difficulty of the volute 110.

[0141] The following description, with reference to the accompanying drawings, describes an embodiment of the duct-type air conditioner 1000 of this utility model.

[0142] Combine Figure 1 , Figure 2 and Figure 3 As shown, a duct-type air conditioner 1000 according to an embodiment of the present utility model includes: a housing 200, a partition 300, a heat exchanger, and a fan assembly 100.

[0143] Among them, combined Figure 1 and Figure 2 As shown, the partition 300 is disposed inside the outer shell 200. The partition 300 divides the inner cavity of the outer shell 200 into a heat exchange cavity and a fan cavity. The heat exchanger is disposed inside the heat exchange cavity. The fan assembly 100 is the aforementioned fan assembly 100. The fan assembly 100 is disposed inside the fan cavity. The specific structure of the fan assembly 100 will not be described in detail here.

[0144] In some embodiments, the heat exchanger is located on the air outlet side of the fan assembly 100. When the duct air conditioner 1000 is running, the impeller in the duct 111 rotates to drive the airflow in the duct 111. At this time, the air outside the duct air conditioner 1000 can enter the duct 111 through the air inlet of the duct 111, and then the impeller sends the air in the duct 111 to the heat exchanger. The heat exchanger exchanges heat with the air flowing through it, and then blows the heat-exchanged air into the room to regulate the indoor air temperature.

[0145] Meanwhile, since the volute 110 defines a noise reduction cavity 112, which is connected to the air duct 111, noise can enter the noise reduction cavity 112 through the noise reduction hole 113 to reduce noise as air passes through the air duct 111. This results in low noise generated by the duct air conditioner 1000 during operation and good overall performance.

[0146] As can be seen from the above structure, the ducted air conditioner 1000 of this utility model embodiment, by adopting the aforementioned fan assembly 100, can reduce the noise generated by the ducted air conditioner 1000 during operation without increasing the overall size of the ducted air conditioner 1000, thereby improving the user experience.

[0147] In some embodiments, combined with Figure 1 , Figure 2 and Figure 3 As shown, the fan assembly 100 includes multiple fan assemblies 100 arranged sequentially within the fan cavity to enhance the air delivery effect of the ducted air conditioner 1000 by utilizing the cooperation of multiple fan assemblies 100, thereby improving the working performance of the ducted air conditioner 1000 to a certain extent.

[0148] The ducted air conditioner 1000 of this application is described in detail below with reference to the accompanying drawings.

[0149] Among them, combined Figure 1 , Figure 2 and Figure 3 As shown, a duct-type air conditioner 1000 according to an embodiment of the present utility model includes: a fan assembly 100, a housing 200, a separator 300, and a heat exchanger (not shown in the figure).

[0150] Combine Figure 1 and Figure 2 As shown, the partition 300 is disposed inside the outer shell 200, and the partition 300 divides the inner cavity of the outer shell 200 into a heat exchange cavity and a fan cavity. The heat exchanger is disposed inside the heat exchange cavity, and the fan assembly 100 is disposed inside the fan cavity.

[0151] Combine Figure 1 , Figure 2 and Figure 3 As shown, the fan assembly 100 includes a volute 110 and a fan wheel. The volute 110 includes a first housing 116, a second housing 117 and a noise reduction mesh (not shown) disposed opposite to each other. An air outlet duct 111 is defined between the first housing 116 and the second housing 117.

[0152] Combine Figures 3-9As shown, the first housing 116 includes a housing body 114 and a plurality of noise reduction components 115. The plurality of noise reduction components 115 are arranged circumferentially along the air duct 111. Each noise reduction component 115 includes a noise reduction plate 1151 and a plurality of partition ribs 1152. The inner side of the housing body 114 is provided with a mounting cavity 1141. The mounting cavity 1141 has a first opening 1144 and a second opening. The first opening 1144 communicates between the mounting cavity 1141 and the air duct 111. The second opening is adjacent to and communicates with the first opening 1144. The noise reduction plate 1151 is adapted to be inserted into the mounting cavity 1141 from the second opening.

[0153] One of the noise reduction component 115 and the shell body 114 is provided with a buckle, and the other is provided with a slot. The buckle is engaged in the slot so that the noise reduction component 115 and the shell body 114 can be detachably engaged.

[0154] Combine Figures 5-8 As shown, a stop portion 1142 is provided at the first opening 1144. The stop portion 1142 forms a stop rib protruding from the cavity wall of the mounting cavity 1141. The stop rib extends circumferentially along the first opening 1144, and both ends of the stop portion 1142 extend to the edges of the first opening 1144 near the two ends of the second opening. A stop recess 1143 is provided on the cavity wall of the mounting cavity 1141 near the first opening 1144. The stop recess 1143 is arranged opposite to the stop rib. The noise reduction plate 1151 is located between the stop recess 1143 and the stop rib.

[0155] Combine Figure 3 , Figure 4 and Figure 8 As shown, at least a portion of one of the noise reduction plates 1151 forms the volute tongue 118 of the volute 110.

[0156] Combine Figures 4-9 As shown, at least a portion of the noise reduction plate 1151 is spaced apart from the shell body 114. The partition rib 1152 includes a first protruding rib 1153 and a second protruding rib 1154. The first protruding rib 1153 and the second protruding rib 1154 are set at an angle. The partition rib 1152 is located between the noise reduction plate 1151 and the shell body 114. The noise reduction plate 1151 and the partition rib 1152 are integrally formed and the partition rib 1152 is engaged with the partition rib 1152 to form a plurality of noise reduction cavities 112 between the noise reduction plate 1151 and the shell body 114. The noise reduction plate 1151 is provided with a plurality of noise reduction holes 113. The plurality of noise reduction holes 113 correspond one-to-one with the plurality of noise reduction cavities 112. The noise reduction cavity 112 is connected to the ventilation channel 111 through the noise reduction hole 113. The flow area of ​​the noise reduction hole 113 is smaller than the flow area of ​​the noise reduction cavity 112.

[0157] The noise reduction mesh is installed inside the air duct 111 and fixed on the noise reduction plate 1151. The mesh of the noise reduction mesh is connected to the noise reduction hole 113 and the air duct 111, and the mesh diameter is smaller than the noise reduction hole 113.

[0158] The impeller is rotatably mounted on the air duct 111 to drive the airflow within the air duct 111.

[0159] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0160] Figure 1 The above illustration shows three wind turbine components 100 for illustrative purposes. However, after reading the above technical solution, a person skilled in the art will obviously understand that the solution can be applied to one, two, four or more wind turbine components 100, which would also fall within the protection scope of this utility model.

[0161] The specific structure and working principle of the fan assembly 100 and other components of the ducted air conditioner 1000 having the fan assembly 100 according to the present utility model, such as the impeller, heat exchanger, etc., are known to those skilled in the art and will not be described in detail here.

[0162] In this specification, the terms "embodiment," "example," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0163] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A fan assembly, characterized in that, include: A volute (110) defines an air outlet duct (111) and a noise reduction cavity (112) within the volute (110), and the noise reduction cavity (112) and the air outlet duct (111) are connected through a noise reduction hole (113); A wind turbine is rotatably disposed in the air duct (111) to drive the airflow within the air duct (111); The volute (110) includes a shell body (114) and a noise reduction component (115). The noise reduction component (115) is disposed on the shell body (114) and participates in forming the noise reduction cavity (112). The noise reduction element (115) includes a plurality of elements, which are arranged circumferentially along the air duct (111). At least one noise reduction element (115) is disposed on the inner side of the shell body (114), and the noise reduction element (115) at least partially forms the volute tongue (118) of the volute shell (110).

2. The wind turbine assembly according to claim 1, characterized in that, The flow area of ​​the noise reduction hole (113) is smaller than the flow area of ​​the noise reduction cavity (112).

3. The wind turbine assembly according to claim 1, characterized in that, The noise reduction component (115) includes a noise reduction plate (1151), which is disposed on the inner side of the shell body (114). At least a portion of the noise reduction plate (1151) is spaced apart from the shell body (114) so ​​that the noise reduction cavity (112) is formed between the noise reduction plate (1151) and the shell body (114). The noise reduction hole (113) is disposed on the noise reduction plate (1151).

4. The wind turbine assembly according to claim 3, characterized in that, The noise reduction component (115) further includes a partition rib (1152), which is located between the noise reduction plate (1151) and the shell body (114) to form a plurality of noise reduction cavities (112) between the noise reduction plate (1151) and the shell body (114). Each noise reduction cavity (112) is connected to the air duct (111) through at least one noise reduction hole (113).

5. The wind turbine assembly according to claim 4, characterized in that, The number of the partition ribs (1152) is multiple, and the multiple partition ribs (1152) are arranged at intervals; Alternatively, the number of the dividing ribs (1152) may be multiple, and may include at least one first rib (1153) and at least one second rib (1154), wherein the first rib (1153) and the second rib (1154) are arranged at an angle.

6. The wind turbine assembly according to claim 4, characterized in that, One of the noise reduction plate (1151) and the shell body (114) is integrally formed with the partition rib (1152), and the other is in a stop-fitting cooperation with the partition rib (1152).

7. The wind turbine assembly according to claim 3, characterized in that, The inner side of the shell body (114) is provided with an installation cavity (1141), the installation cavity (1141) has a first opening (1144) and the first opening (1144) connects the installation cavity (1141) and the air duct (111), and the noise reduction plate (1151) is provided in the installation cavity (1141).

8. The wind turbine assembly according to claim 7, characterized in that, The inner side of the shell body (114) is also provided with a stop (1142), which stops the noise reduction plate (1151) on the side away from the noise reduction cavity (112).

9. The wind turbine assembly according to claim 8, characterized in that, The stop portion (1142) is located at the first opening (1144) and forms a stop rib protruding from the cavity wall of the mounting cavity (1141).

10. The wind turbine assembly according to claim 9, characterized in that, The cavity wall of the mounting cavity (1141) is provided with a stop countersunk platform (1143) near the first opening (1144). The stop countersunk platform (1143) is arranged opposite to the stop rib, and the noise reduction plate (1151) is located between the stop countersunk platform (1143) and the stop rib.

11. The wind turbine assembly according to claim 8, characterized in that, The cavity wall of the mounting cavity (1141) is provided with a slot near the first opening (1144), at least a portion of the noise reduction plate (1151) is inserted into the slot, and the stop (1142) is formed as the groove wall of the slot away from the noise reduction cavity (112).

12. The wind turbine assembly according to claim 8, characterized in that, The mounting cavity (1141) also has a second opening, which is adjacent to and communicates with the first opening (1144); The stop portion (1142) extends circumferentially along the first opening (1144), and both ends of the stop portion (1142) extend to the edge of the first opening (1144) near the two ends of the second opening. The noise reduction plate (1151) is adapted to be inserted into the mounting cavity (1141) from the second opening.

13. The wind turbine assembly according to claim 1, characterized in that, The noise reduction component (115) is detachably coupled to the shell body (114).

14. The wind turbine assembly according to claim 13, characterized in that, One of the noise reduction component (115) and the shell body (114) is provided with a buckle, and the other is provided with a slot, and the buckle is engaged in the slot.

15. The wind turbine assembly according to claim 1, characterized in that, The volute (110) also includes a noise reduction mesh, which is disposed in the air duct (111) and fixed on the wall where the noise reduction hole (113) is located. The mesh of the noise reduction mesh connects the noise reduction hole (113) and the air duct (111), and the aperture of the mesh is smaller than the aperture of the noise reduction hole (113).

16. The wind turbine assembly according to any one of claims 1-15, characterized in that, The volute (110) includes a first housing (116) and a second housing (117) disposed opposite to each other, defining the air duct (111) between the first housing (116) and the second housing (117), and the first housing (116) includes the housing body (114) and the noise reduction component (115).

17. A ducted air conditioner, characterized in that, include: Outer shell (200); A partition (300) is disposed inside the housing (200) to divide the inner cavity of the housing (200) into a heat exchange cavity and a fan cavity; A heat exchanger, wherein the heat exchanger is disposed within the heat exchange chamber; A fan assembly (100), wherein the fan assembly (100) is the fan assembly (100) according to any one of claims 1-16, and the fan assembly (100) is disposed in the fan cavity.

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