Fan assembly and air duct type air conditioner with same

Abstract

The fan assembly comprises a volute and a wind wheel, an air channel and a first noise reduction cavity are defined by the volute, the first noise reduction cavity communicates with the air channel through a first noise reduction hole, the wind wheel is rotatably arranged in the air channel to drive airflow in the air channel to flow, a first noise reduction piece is arranged in the first noise reduction hole, and the first noise reduction piece is arranged in the first noise reduction hole. A gap is formed between the first silencing part and the hole wall of the first noise reduction hole, and the first silencing part is used for reducing the through-flow area of the first noise reduction hole. According to the fan assembly provided by the embodiment of the invention, the volute is utilized to define the communicating air duct and the first noise reduction cavity, the first noise reduction cavity is arranged to be communicated with the air duct through the first noise reduction hole, and the first noise reduction piece is arranged in the first noise reduction hole, so that noise generated when the fan assembly works can be reduced on the premise of not increasing the size of the whole machine; the fan assembly has the advantages of being small in occupied space, low in working noise and the like.

Description

Technical Field

[0001] This invention 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. Summary of the Invention

[0004] This invention aims to at least solve 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] The present invention also aims to provide a duct-type air conditioner having the above-described fan assembly.

[0006] According to an embodiment of the present invention, a fan assembly includes: a volute defining an air duct and a first noise reduction cavity, the first noise reduction cavity and the air duct being connected through a first noise reduction hole; and a fan impeller rotatably disposed within the air duct to drive airflow within the air duct; wherein a first silencing element is provided within the first noise reduction hole, and a gap exists between the first silencing element and the hole wall of the first noise reduction hole, the first silencing element being used to reduce the flow area of ​​the first noise reduction hole.

[0007] According to the embodiments of the present invention, the fan assembly defines a connecting ventilation duct and a first noise reduction cavity by using a volute. The first noise reduction cavity is configured to connect to the ventilation duct through a first noise reduction hole, and a first silencing component is provided in the first noise reduction hole. This can reduce the noise generated by the fan assembly during operation without increasing the overall size of the unit, so that the fan assembly has advantages such as small space occupation and low operating noise, thereby improving the user experience.

[0008] In some embodiments, the first noise reduction hole has a first opening and a second opening at both ends, the first opening is disposed near the air duct and the second opening is disposed near the first noise reduction cavity, and the surface of the first silencing member near the air duct is located on the side of the plane or curved surface where the first opening is located away from the impeller.

[0009] In some embodiments, the first silencing component is a silencing column, at least a portion of which is inserted into the first noise reduction hole, and the outer peripheral wall of the silencing column is spaced apart from the peripheral wall of the first noise reduction hole.

[0010] In some embodiments, the outer diameter of at least a portion of the silencing column located within the first noise reduction hole gradually decreases along the direction close to the air duct; and / or, the flow area of ​​the first noise reduction hole is smaller than the flow area of ​​the first noise reduction cavity, and the aperture of the first noise reduction hole gradually decreases along the direction close to the air duct.

[0011] In some embodiments, the volute includes: a shell body; and a noise reduction element disposed on the shell body, the noise reduction element participating in forming the first noise reduction cavity.

[0012] In some embodiments, the number of the first noise reduction cavity and the number of the first noise reduction hole are both multiple, and the multiple first noise reduction holes correspond one-to-one with the multiple first noise reduction cavities; and / or, the number of the first noise reduction holes is multiple, and each of the first noise reduction holes is provided with the first silencing component.

[0013] In some embodiments, the shell body includes a mounting wall, the noise reduction element and the mounting wall are arranged and connected in the inward and outward directions of the air duct to form the first noise reduction cavity, and the first noise reduction hole is disposed on one of the noise reduction element and the mounting wall located on the inner side.

[0014] In some embodiments, the first noise-reducing element is at least partially disposed within the first noise-reducing cavity and is connected to one of the noise-reducing elements and the mounting wall located on the outer side.

[0015] In some embodiments, the volute has a volute tongue, and the volute tongue and the mounting wall are disposed near the outlet of the air duct and located on opposite sides of the outlet.

[0016] In some embodiments, the noise reduction component includes: a noise reduction plate disposed opposite to the shell body; and a partition rib located between the noise reduction plate and the shell body to form a plurality of first noise reduction cavities between the noise reduction plate and the shell body, each of the first noise reduction cavities communicating with the air duct through at least one first noise reduction hole.

[0017] 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.

[0018] 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.

[0019] In some embodiments, the noise reduction member is disposed on the outside of the shell body and defines the first noise reduction cavity between the member and the shell body, and the first noise reduction hole is disposed in the shell body; wherein, a portion of the first noise reduction member is disposed in the first noise reduction cavity and connected to the noise reduction member, and another portion is disposed in the first noise reduction hole.

[0020] In some embodiments, the opposite ends of the noise reduction component are detachably connected to the housing body via a connecting structure.

[0021] In some embodiments, at least one of the connection structures includes a snap-fit ​​buckle and a slot, one of which is located on the housing body and the other on the noise reduction component.

[0022] In some embodiments, the buckle and / or the structure forming the slot are provided with a guide surface for guiding the buckle to be inserted into the slot.

[0023] According to an embodiment of the present invention, a ducted air conditioner includes: a housing; a partition disposed within the housing to divide the inner cavity of the housing into a heat exchange cavity and a fan cavity; a heat exchanger disposed within the heat exchange cavity; and a fan assembly, which is the aforementioned fan assembly disposed within the fan cavity.

[0024] 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.

[0025] In some embodiments, the partition defines a communication port that connects the heat exchange chamber and the outlet of the air duct; wherein the partition defines a second noise reduction chamber that connects the second noise reduction chamber and the communication port through a second noise reduction hole, the second noise reduction hole having a second silencing element and a gap between the second silencing element and the hole wall of the second noise reduction hole, the second silencing element being used to reduce the flow area of ​​the second noise reduction hole.

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

[0027] The above and / or additional aspects and advantages of the present invention 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 ducted air conditioner according to some embodiments of the present invention.

[0029] Figure 2 This is a front view of a ducted air conditioner according to some embodiments of the present invention.

[0030] Figure 3 for Figure 2 A sectional view along line AA.

[0031] Figure 4 for Figure 1 A bottom view of a ducted air conditioner with some structural elements omitted.

[0032] Figure 5 for Figure 4 Sectional view along line BB.

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

[0034] Figure 7 for Figure 4 A sectional view along line CC.

[0035] Figure 8 for Figure 7 Enlarged view of region II.

[0036] Figure 9 for Figure 7 Enlarged view of region III.

[0037] Figure 10 This is an exploded view of a ducted air conditioner according to some embodiments of the present invention, with some structural elements omitted.

[0038] Figure 11 for Figure 10 Enlarged view of region IV in the middle.

[0039] Figure 12 for Figure 10 A schematic diagram of a ducted air conditioner from another angle.

[0040] Figure 13 This is a schematic diagram of a noise reduction device according to some embodiments of the present invention.

[0041] Figure 14 for Figure 13 A magnified view of region V in the middle.

[0042] Figure 15 This is a schematic diagram illustrating the cooperation between the noise reduction cavity and the noise reduction hole in some embodiments of the present invention.

[0043] Figure label:

[0044] 1000. Ductless air conditioner;

[0045] 100. Fan components;

[0046] 110. Snail shell;

[0047] 111, air duct; 1111, outlet;

[0048] 112. First noise reduction cavity;

[0049] 113. First noise reduction hole; 1131. First opening; 1132. Second opening;

[0050] 114. Shell body; 1143. Mounting wall;

[0051] 115. Noise reduction components;

[0052] 1151. Noise reduction board;

[0053] 1152. Dividing bar; 1153. First raised bar; 1154. Second raised bar;

[0054] 116. First shell;

[0055] 117. Second shell;

[0056] 118. Cochlear tongue;

[0057] 130. Connecting structure; 131. Buckle; 132. Slot; 133. Guide surface;

[0058] 140. Wind turbine;

[0059] 150. First silencer component;

[0060] 200, outer casing; 210, heat exchange chamber; 220, fan chamber;

[0061] 300. Separator; 310. Connecting port;

[0062] 400. Heat exchanger. Detailed Implementation

[0063] Embodiments of the present invention 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 the present invention, and should not be construed as limiting the present invention.

[0064] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] 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.

[0069] To address the aforementioned problems, this application proposes a fan assembly 100.

[0070] The fan assembly 100 of an embodiment of the present invention is described below with reference to the accompanying drawings.

[0071] Combination Figure 1 , Figure 2 and Figure 3 As shown, a wind turbine assembly 100 according to an embodiment of the present invention includes a volute 110 and a wind turbine 140.

[0072] Among them, combined Figures 2-6 As shown, the volute 110 defines an air duct 111 and a first noise reduction cavity 112, which are connected by a first noise reduction hole 113. This allows the first 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 first noise reduction cavity 112 through the first noise reduction hole 113. This facilitates the absorption of specific frequency noise by utilizing the first noise reduction hole 113 and the first noise reduction cavity 112 in conjunction, thus achieving noise reduction.

[0073] In some embodiments, combined with Figures 3-6 As shown, the first noise reduction hole 113 is located between the first noise reduction cavity 112 and the air duct 111 and is connected to the first noise reduction cavity 112 and the air duct 111 respectively, so as to realize the connection between the first noise reduction cavity 112 and the air duct 111 by using the first noise reduction hole 113, thereby reducing the connection difficulty between the first noise reduction cavity 112 and the air duct 111.

[0074] It is worth noting that this application directly utilizes the volute 110 to define the first noise reduction cavity 112, which not only reduces the molding difficulty of the first noise reduction cavity 112, but also avoids setting up a separate structural component to form the first 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 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.

[0075] Combination Figure 2 and Figure 3As shown, the impeller 140 is rotatably disposed within the air duct 111 to drive the airflow within the air duct 111. In this way, the impeller 140 can be used to introduce air from outside the air duct 111 into the air duct 111 through one side of the air duct 111 and to exhaust air from inside the air duct 111 through the other side of the air duct 111, which facilitates the circulation of air and makes it easier to deliver air of a specific temperature into the room, thereby achieving the purpose of regulating the indoor temperature and ensuring the working performance of the fan assembly 100 to a certain extent.

[0076] It should be noted that noise is generated during the rotation of the impeller 140 and during the airflow. In order to reduce noise, this application uses the volute 110 to define the first noise reduction cavity 112 and sets the first noise reduction cavity 112 to be connected to the air duct 111, so that the first noise reduction hole 113 and the first noise reduction cavity 112 can work together to absorb the noise generated during the rotation of the impeller 140 and during the airflow, thereby achieving the purpose of noise reduction.

[0077] In a specific example, during the rotation of the wind turbine 140 and the flow of air, sound waves can enter the first noise reduction cavity 112 through the first noise reduction hole 113. When the sound waves enter the first noise reduction cavity 112, they will collide with the cavity wall of the first 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 first noise reduction cavity 112 will produce a resonance effect, which will cause the sound waves to be attenuated in the first noise reduction cavity 112, thereby achieving the noise reduction effect.

[0078] Among them, combined Figure 4 , Figure 5 and Figure 6 As shown, a first noise reduction component 150 is provided inside the first noise reduction hole 113, and there is a gap between the first noise reduction component 150 and the hole wall of the first noise reduction hole 113. The first noise reduction component 150 is used to reduce the flow area of ​​the first noise reduction hole 113.

[0079] It should be noted that because the first noise reduction hole 113 is connected to the ventilation duct 111, a whistling sound will be generated when high-speed wind blows through the first noise reduction hole 113, which will affect the noise reduction effect of the first noise reduction cavity 112.

[0080] Based on this, the present application provides a first silencing component 150 in the first noise reduction hole 113, and sets the first silencing component 150 to have a gap with the hole wall of the first noise reduction hole 113, so as to reduce the flow area of ​​the first noise reduction hole 113 by using the first silencing component 150. In this way, while the first noise reduction hole 113 can be connected to the ventilation duct 111, the first silencing component 150 can also be used to eliminate whistling sound, thereby reducing the noise generated by the fan assembly 100 during operation and improving the noise reduction effect of the first noise reduction hole 113 and the first noise reduction cavity 112.

[0081] Of course, in some other embodiments, the flow area of ​​the first noise reduction hole 113 can be reduced by directly reducing the aperture of the first noise reduction hole 113, thereby reducing the whistling sound. However, if the aperture of the first noise reduction hole 113 is too small, it will increase the difficulty of forming the first noise reduction hole 113.

[0082] Based on this, the present application provides a first silencing component 150 in the first noise reduction hole 113. This not only reduces the flow area of ​​the first noise reduction hole 113, but also allows for an adaptive increase in the size of the first noise reduction hole 113, thereby reducing the molding difficulty of the first noise reduction hole 113 and reducing whistling noise at the same time.

[0083] As can be seen from the above structure, the fan assembly 100 of the present invention defines the air duct 111 and the first noise reduction cavity 112 by using the volute 110. On the one hand, it can reduce the molding difficulty of the first noise reduction cavity 112, and on the other hand, it can avoid setting up a separate structural component to form the first noise reduction cavity 112, simplifying the structure of the fan assembly 100. This reduces the manufacturing difficulty and manufacturing cost of the fan assembly 100, and avoids increasing the size of the fan assembly 100, giving the fan assembly 100 the advantage of occupying little space.

[0084] Meanwhile, the first noise reduction cavity 112 and the air duct 111 are connected through the first noise reduction hole 113. In this way, during the rotation of the impeller 140 and the flow of air, the sound waves in the air duct 111 can enter the first noise reduction cavity 112. The first noise reduction hole 113 and the first noise reduction cavity 112 work together to absorb the noise generated during the rotation of the impeller 140 and the flow of air, thereby achieving the purpose of noise reduction. This reduces the noise generated by the fan assembly 100 during operation, giving the fan assembly 100 the advantage of low operating noise and improving the user experience.

[0085] In addition, by providing a first silencing component 150 in the first noise reduction hole 113, not only can the first noise reduction hole 113 be prevented from producing a whistling sound during noise reduction, but the molding difficulty of the first noise reduction hole 113 can also be reduced, thereby reducing the noise reduction difficulty and molding difficulty of the fan assembly 100. Thus, the fan assembly 100 not only has the advantage of low operating noise, but also low noise reduction difficulty.

[0086] Understandably, compared to the prior art, the fan assembly 100 of this application uses the volute 110 itself to define the first noise reduction cavity 112, and sets the first noise reduction cavity 112 to be connected to the ventilation duct 111 through the first noise reduction hole 113, and provides a first sound-absorbing component 150 in the first noise reduction hole 113. Not only can the first noise reduction cavity 112 and the first noise reduction hole 113 work together to reduce noise during the rotation of the impeller 140 and during the flow of air, but it can also reduce the molding difficulty of the first noise reduction cavity 112 and the first noise reduction hole 113, and simplify the structure of forming the first 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, so that the fan assembly 100 has the advantages of small space occupation and low operating noise.

[0087] In some embodiments, the diameter of the first noise reduction hole 113 is 1mm-1.5mm. This reduces the molding difficulty of the first noise reduction hole 113 and enables the effective elimination of whistling sounds after the first sound-absorbing element 150 is installed.

[0088] In some embodiments, combined with Figure 4 , Figure 5 and Figure 6 As shown, the first noise reduction hole 113 has a first opening 1131 and a second opening 1132 at both ends. The first opening 1131 is located near the air duct 111, and the second opening 1132 is located near the first noise reduction cavity 112. The surface of the first silencing component 150 near the air duct 111 is located on the side of the plane or curved surface where the first opening 1131 is located, away from the impeller 140. By setting the two ends of the first noise reduction hole 113 to have the first opening 1131 and the second opening 1132, it is easier to achieve the connection between the first noise reduction cavity 112 and the air duct 111 using the first noise reduction hole 113, thus reducing the difficulty of connecting the first noise reduction cavity 112 and the air duct 111.

[0089] Meanwhile, by setting the surface of the first silencing component 150 near the air duct 111 to be located on the side away from the impeller 140 of the plane or curved surface where the first opening 1131 is located, the first silencing component 150 is prevented from protruding from the plane or curved surface where the first opening 1131 is located towards the outer surface of the impeller 140 to a certain extent. In other words, the first silencing component 150 is prevented from being located in the air duct 111 to a certain extent, thereby preventing noise from being generated due to the first silencing component 150 protruding from the first noise reduction hole 113, and further reducing the noise generated by the fan assembly 100 during operation.

[0090] In some embodiments, combined with Figure 5 , Figure 6 and Figure 13As shown, the first silencing component 150 is a silencing column, with at least a portion of the silencing column inserted into the first noise reduction hole 113. The outer peripheral wall of the silencing column is spaced apart from the peripheral wall of the first noise reduction hole 113. By setting the first silencing component 150 as a silencing column, the molding difficulty of the first silencing component 150 can be reduced, and the performance of the first silencing component 150 can be guaranteed to a certain extent. This allows at least a portion of the silencing column to be inserted into the first noise reduction hole 113, and the outer peripheral wall of the first silencing component 150 can be effectively spaced apart from the peripheral wall of the first noise reduction hole 113. In this way, while the first noise reduction hole 113 can be connected to the ventilation duct 111, the first silencing component 150 can also be used to eliminate whistling sounds, thereby reducing the noise generated by the fan assembly 100 during operation and improving the noise reduction effect of the first noise reduction hole 113 and the first noise reduction cavity 112.

[0091] In some embodiments, the outer diameter of the silencing post is smaller than the diameter of the first noise reduction hole 113, so that when at least part of the silencing post is inserted into the first noise reduction hole 113, the outer peripheral wall of the silencing post can be effectively spaced apart from the peripheral wall of the first noise reduction hole 113.

[0092] In some embodiments, combined with Figure 4 , Figure 5 and Figure 6 As shown, the outer diameter of at least a portion of the silencing column within the first noise reduction hole 113 gradually decreases along the direction close to the air duct 111. This facilitates the insertion and fitting of the silencing column into the first noise reduction hole 113, reducing the assembly difficulty of the silencing column and the first noise reduction hole 113, thereby reducing the difficulty of silencing the first noise reduction hole 113.

[0093] In some embodiments, combined with Figure 4 , Figure 5 and Figure 6 As shown, the flow area of ​​the first noise reduction hole 113 is smaller than the flow area of ​​the first noise reduction cavity 112, and the aperture of the first noise reduction hole 113 gradually decreases along the direction close to the air duct 111. Specifically, by setting the flow area of ​​the first noise reduction hole 113 to be smaller than the flow area of ​​the first noise reduction cavity 112, the first noise reduction hole 113 and the first noise reduction cavity 112 can be combined to form an effect similar to a Helmholtz resonator (e.g., ...). Figure 15As shown), when air flows into the first noise reduction cavity 112 from the first noise reduction hole 113, the flow area of ​​the first noise reduction cavity 112 is larger than that of the first noise reduction hole 113. This results in the airflow velocity within the first noise reduction cavity 112 being much lower than the velocity of the localized airflow in the center of the first noise reduction cavity 112. Consequently, a relatively intense shear flow forms within the first noise reduction cavity 112, accompanied by unstable disturbance waves. Simultaneously, if the air column in the first noise reduction hole 113 is disturbed and moves into the first noise reduction cavity 112, the... The gas inside the noise reduction cavity 112 is compressed, and the pressure increases. At this time, the air in the first 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 inside the first noise reduction cavity 112. This causes the air column in the first 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.

[0094] 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 first noise reduction hole 113 and / or the flow area of ​​the first noise reduction cavity 112 can be adjusted by the noise frequency to be eliminated.

[0095] In other words, the combination of the first noise reduction hole 113 and the first noise reduction cavity 112 can absorb noise of a specific frequency. This allows the first noise reduction hole 113 and the first noise reduction cavity 112 to absorb low-frequency noise, thereby achieving noise reduction and reducing the noise generated by the fan assembly 100 during operation to a certain extent, thus improving the user experience.

[0096] Among them, the noise frequency to be eliminated S is the cross-sectional area of ​​the first noise reduction aperture 113, S=πr 2 r = D / 2; V is the volume of the first noise reduction cavity 112; L is the length of the first noise reduction aperture 113 (see diagram for details). Figure 15 ).

[0097] Based on this, in a specific example, the absorption of low-frequency noise by the first noise reduction cavity 112 can be achieved by adjusting S, V or L.

[0098] Meanwhile, by setting the aperture of the first noise reduction hole 113 to gradually decrease along the direction close to the air duct 111, the aperture of the first noise reduction hole 113 can gradually increase in the direction away from the air duct 111, so that the opening size of the second opening 1132 is larger than the opening size of the first opening 1131, thereby facilitating the insertion of the first noise reduction component 150 into the first noise reduction hole 113 through the second opening 1132, reducing the assembly difficulty of the first noise reduction component 150 and the first noise reduction hole 113.

[0099] In addition, the Helmholtz resonator has three applications in physics: first, it can absorb energy due to friction inside the tube; second, it can diffuse incident waves due to radiation from the tube opening; and third, it can store energy inside, extending the duration of action.

[0100] In some embodiments, combined with Figure 6 , Figure 10 and Figure 12 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 first noise reduction cavity 112. This can also be understood as the first noise reduction cavity 112 being defined by the noise reduction component 115. For example, the first noise reduction cavity 112 can be defined by the shell body 114 and the noise reduction component 115 in combination; or, the first noise reduction cavity 112 can be defined solely by the noise reduction component 115. This allows the volute 110 to define the first noise reduction cavity 112, reducing the molding difficulty of the first noise reduction cavity 112 and enabling the volute 110 itself to define the first noise reduction cavity 112. To a certain extent, this avoids the need for additional structural components to form the first noise reduction cavity 112, thereby avoiding an increase in the size of the fan assembly 100. This reduces the noise generated by the fan assembly 100 during operation without increasing the overall size, resulting in advantages such as small footprint and low operating noise, thus improving the user experience.

[0101] In some embodiments, combined with Figure 5 , Figure 12 and Figure 13 As shown, the noise reduction component 115 includes a noise reduction plate 1151, which is disposed on the outer 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 a first noise reduction cavity 112 is formed between the noise reduction plate 1151 and the shell body 114. A first noise reduction hole 113 is disposed on the shell body 114. That is to say, the first 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 first noise reduction cavity 112 defined by the volute 110 and reduce the molding difficulty of the first noise reduction cavity 112.

[0102] Meanwhile, based on the noise reduction component 115 being disposed on the outside of the shell body 114 and the noise reduction plate 1151 forming a first noise reduction cavity 112 between the shell body 114, this application provides a first noise reduction hole 113 on the shell body 114 to realize that the first noise reduction hole 113 is disposed between the first noise reduction cavity 112 and the air duct 111 and respectively connects the first noise reduction cavity 112 and the air duct 111, so as to facilitate the connection between the first noise reduction cavity 112 and the air duct 111 by using the first noise reduction hole 113, thereby reducing the connection difficulty between the first noise reduction cavity 112 and the air duct 111.

[0103] It is worth noting that the noise reduction component 115 is located on the outside of the shell body 114 in this application. On the one hand, the noise reduction component 115 can be directly installed on the outside of the shell body 114, reducing the assembly difficulty of the noise reduction component 115 and thus reducing the molding difficulty of the first noise reduction cavity 112, so as to facilitate noise reduction by utilizing the first noise reduction cavity 112. On the other hand, it can also avoid the noise reduction component 115 occupying the space in the air duct 111 and improve the air supply effect of the air duct 111.

[0104] Of course, in some other embodiments, the noise reduction component 115 may also be disposed inside the shell body 114 so as to protect the noise reduction component 115 by utilizing the shell body 114, without making specific limitations here.

[0105] In some embodiments, combined with Figure 5 , Figure 6 , Figure 12 and Figure 13 As shown, there are multiple first noise reduction cavities 112 and multiple first noise reduction holes 113, with each of the multiple first noise reduction holes 113 corresponding to one of the multiple first noise reduction cavities 112. It should be noted that the wavelength range of a single Helmholtz resonator is too narrow. Therefore, this application provides multiple first noise reduction cavities 112 and multiple first noise reduction holes 113. The combination of multiple first noise reduction cavities 112 and multiple first noise reduction holes 113 can form a combination of multiple Helmholtz resonators, which can absorb noise of specific frequencies and improve the noise reduction effect.

[0106] Optionally, combined Figure 5 , Figure 6 , Figure 12 and Figure 13 As shown, there are multiple first noise reduction holes 113, and each first noise reduction hole 113 is provided with a first silencing component 150. This can also be understood as multiple first silencing components 150, with each of the multiple first silencing components 150 corresponding one-to-one with the multiple first noise reduction holes 113, in order to prevent the first noise reduction holes 113 from producing whistling sounds during noise reduction and to improve the noise reduction effect of the first noise reduction holes 113.

[0107] In some embodiments, combined with Figures 3-6As shown, the shell body 114 includes a mounting wall 1143. A noise reduction component 115 and the mounting wall 1143 are arranged and connected in the inward and outward directions of the air duct 111 to form a first noise reduction cavity 112. A first noise reduction hole 113 is located on the inner side of either the noise reduction component 115 or the mounting wall 1143. Specifically, when the noise reduction component 115 is located on the inner side of the mounting wall 1143, the first noise reduction hole 113 is located on the noise reduction component 115; when the noise reduction component 115 is located on the outer side of the mounting wall 1143, the first noise reduction hole 113 is located on the mounting wall 1143. This arrangement allows the first noise reduction hole 113 to be positioned between the first noise reduction cavity 112 and the air duct 111, facilitating the connection between the first noise reduction cavity 112 and the air duct 111 and reducing the difficulty of connecting them.

[0108] In specific examples, combined Figures 3-6 As shown, the noise reduction component 115 is disposed on the outer side of the mounting wall 1143, and the first noise reduction hole 113 is disposed on the mounting wall 1143. By disposing of the noise reduction component 115 on the outer side of the mounting wall 1143, on the one hand, the noise reduction component 115 can be directly installed on the outer side of the shell body 114, reducing the assembly difficulty of the noise reduction component 115, thereby reducing the molding difficulty of the first noise reduction cavity 112, so as to facilitate noise reduction using the first noise reduction cavity 112; on the other hand, it also avoids the noise reduction component 115 occupying the space in the air duct 111, improving the air supply effect of the air duct 111.

[0109] In some embodiments, combined with Figure 5 and Figure 6 As shown, the first noise reduction component 150 is at least partially disposed within the first noise reduction cavity 112, and the first noise reduction component 150 is connected to one of the noise reduction components 115 and the mounting wall 1143 located on the outer side. This means that when the noise reduction component 115 is located on the inner side of the mounting wall 1143, the first silencing component 150 is connected to the mounting wall 1143. When the noise reduction component 115 is located on the outer side of the mounting wall 1143, the first silencing component 150 is connected to the noise reduction component 115. This not only enables the first silencing component 150 to be supported by the noise reduction component 115 or the mounting wall 1143, thereby improving the positional stability of the first silencing component 150, but also allows the first silencing component 150 and the first noise reduction hole 113 to be respectively located on the noise reduction component 115 and the mounting wall 1143. In this way, during the assembly and connection of the noise reduction component 115 and the mounting wall 1143, the first silencing component 150 can be assembled into the first noise reduction hole 113, reducing the difficulty of matching the first silencing component 150 and the first noise reduction hole 113, and thus reducing the difficulty of silencing the first noise reduction hole 113.

[0110] In specific examples, combined Figure 5 and Figure 6As shown, the noise reduction component 115 is disposed on the outside of the shell body 114 and defines a first noise reduction cavity 112 between the component and the shell body 114. The first noise reduction hole 113 is disposed on the shell body 114. A portion of the first silencing component 150 is disposed in the first noise reduction cavity 112 and connected to the noise reduction component 115, and another portion is disposed in the first noise reduction hole 113. This allows the noise reduction component 115 to be disposed on the outside of the mounting wall 1143, the first noise reduction hole 113 to be disposed on the mounting wall 1143, and the first silencing component 150 to be connected to the noise reduction component 115. This allows the first silencing component 150 and the first noise reduction hole 113 to be disposed on the noise reduction component 115 and the mounting wall 1143 respectively, reducing the difficulty of fitting the first silencing component 150 and the first noise reduction hole 113 together.

[0111] In some embodiments, the first silencing component 150 and the noise reduction component 115 are integrally formed. This not only enables the first silencing component 150 and the noise reduction component 115 to be connected, but also reduces the difficulty of connecting the first silencing component 150 and the noise reduction component 115 and improves the connection strength. On the one hand, it allows the first silencing component 150 to be installed in the first noise reduction hole 113 during the assembly and connection of the noise reduction component 115 and the mounting wall 1143. On the other hand, it also improves the positional stability of the first silencing component 150, thereby improving the working performance of the first silencing component 150.

[0112] Of course, in some other embodiments, the first silencing component 150 and the noise reduction component 115 can also be formed as separate parts. After the first silencing component 150 and the noise reduction component 115 are processed, the first silencing component 150 and the noise reduction component 115 are then connected (e.g., by welding, bonding or bolting). This can also achieve the connection between the first silencing component 150 and the noise reduction component 115.

[0113] In some embodiments, such as Figure 3 As shown, the volute 110 has a volute tongue 118, and the volute tongue 118 and mounting wall 1143 are disposed near the outlet 1111 of the air duct 111 and located on opposite sides of the outlet 1111. In this way, when the noise reduction component 115 and the mounting wall 1143 are arranged and connected in the inward and outward directions of the air duct 111, the noise reduction component 115 can be disposed away from the volute tongue 118, so as to avoid interference between the noise reduction component 115 and the volute tongue 118 during assembly to a certain extent, thereby reducing the assembly difficulty of the noise reduction component 115 and thus reducing the noise reduction difficulty of the fan assembly 100.

[0114] In some embodiments, combined with Figure 5 , Figure 6 , Figure 12 and Figure 13As shown, the noise reduction component 115 includes a noise reduction plate 1151 and a partition rib 1152. The noise reduction plate 1151 is disposed opposite to the shell body 114, and the partition rib 1152 is located between the noise reduction plate 1151 and the shell body 114, so that a plurality of first noise reduction cavities 112 are formed between the noise reduction plate 1151 and the shell body 114. Each first noise reduction cavity 112 is connected to the air duct 111 through at least one first noise reduction hole 113. This means that each first noise reduction cavity 112 is connected to the air duct 111 through one first noise reduction hole 113, or through multiple first noise reduction holes 113, so that sound waves can effectively enter the first noise reduction cavity 112, thereby achieving the purpose of noise reduction using the first noise reduction cavity 112.

[0115] In addition, by setting a partition rib 1152 between the noise reduction plate 1151 and the shell body 114 to form a plurality of first noise reduction cavities 112, the molding difficulty of the plurality of first noise reduction cavities 112 can be reduced, thereby reducing the noise reduction difficulty of the fan assembly 100.

[0116] In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0117] In some embodiments, there are multiple partition ribs 1152, which are arranged at intervals. This facilitates the formation of multiple first noise reduction cavities 112 between the noise reduction plate 1151 and the shell body 114, reducing the molding difficulty of the multiple first noise reduction cavities 112.

[0118] The multiple dividing ribs 1152 mentioned here can be understood as multiple ribs arranged at intervals in the same direction.

[0119] In other embodiments, combined with Figure 12 and Figure 13 As shown, there are multiple partition ribs 1152, each partition rib 1152 including at least one first protruding rib 1153 and at least one second protruding rib 1154, the first protruding rib 1153 and the second protruding rib 1154 being arranged at an angle. In this way, multiple partition ribs 1152 can be used to form a large number of first noise reduction cavities 112 between the noise reduction plate 1151 and the shell body 114, which not only reduces the molding difficulty of multiple first noise reduction cavities 112, but also improves the noise reduction effect.

[0120] In the description of this invention, 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.

[0121] In some embodiments, combined with Figure 5 , Figure 6 , Figure 12 and Figure 13As 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 first noise-reducing cavity 112 after assembly, thereby guaranteeing the noise reduction effect of the first noise-reducing cavity 112.

[0122] In some embodiments, combined with Figure 5 , Figure 6 , Figure 12 and Figure 13 As shown, the noise reduction plate 1151 and the partition rib 1152 are integrally formed. This reduces the molding difficulty of the partition rib 1152, and at the same time, the noise reduction plate 1151 can 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.

[0123] In other embodiments, the noise reduction plate 1151 is integrally formed with the shell body 114 (not shown in this example figure).

[0124] In some embodiments, the opposite ends of the noise reduction component 115 are detachably connected to the housing body 114 via a connecting structure 130 (the specific structure of the connecting structure 130 can be found in [reference]). Figure 11 This refers to the fact that the noise reduction component 115 is disposed on the shell body 114 and forms a detachable fit with the shell body 114. On the one hand, this reduces the difficulty of fitting the noise reduction component 115 and the shell body 114 and improves assembly efficiency. On the other hand, it also allows the noise reduction component 115 and the shell body 114 to be formed as two independent parts. In this way, the noise reduction component 115 and the shell body 114 can be processed and formed separately during the production process, reducing the forming difficulty of the noise reduction component 115 and the shell body 114, and helping to ensure the quality of the noise reduction component 115 and the shell body 114 and improve their performance.

[0125] Meanwhile, by setting both ends of the noise reduction component 115 to be detachably connected to the shell body 114 via the connection structure 130, the connection strength between the noise reduction component 115 and the shell body 114 can be increased, so that the noise reduction component 115 and the shell body 114 form a stable connection. This is conducive to forming a structurally stable first noise reduction cavity 112 and improving the noise reduction effect.

[0126] In some embodiments, after the noise reduction component 115 and the shell body 114 are injection molded separately, the noise reduction plate 1151 is disposed on the shell body 114 through the connecting structure 130 to assemble them into a whole, so as to facilitate the formation of the first noise reduction cavity 112.

[0127] In some embodiments, combined with Figure 7 , Figure 8 and Figure 9 As shown, at least one connecting structure 130 includes a snap-fit ​​buckle 131 and a slot 132, one of which is located on the housing body 114 and the other on the noise reduction component 115. This means that when the noise reduction component 115 has a snap-fit ​​buckle 131, the housing body 114 has a slot 132; when the housing body 114 has a snap-fit ​​buckle 131, the noise reduction component 115 has a slot 132. The snap-fit ​​buckle 131 engages with the slot 132, thereby achieving a snap-fit ​​engagement between the noise reduction component 115 and the housing body 114. This allows for a detachable engagement between the noise reduction component 115 and the housing body 114, making installation of the noise reduction component 115 and the housing body 114 convenient, reducing assembly difficulty, and improving assembly efficiency.

[0128] In some embodiments, combined with Figure 7 , Figure 8 and Figure 9 As shown, the noise reduction component 115 is provided with a buckle 131, and the shell body 114 is provided with a slot 132.

[0129] In other embodiments, the housing body 114 is provided with a buckle 131, and the noise reduction component 115 is provided with a slot 132 (not shown in the example figure).

[0130] Of course, in some other embodiments, both the noise reduction component 115 and the shell body 114 may be provided with a buckle 131 and a slot 132.

[0131] In some embodiments, combined with Figure 7 , Figure 8 and Figure 9 As shown, the buckle 131 and / or the structure forming the slot 132 are provided with a guide surface 133 for guiding the buckle 131 into the slot 132. This means that the buckle 131 is provided with a guide surface 133; or, the structure forming the slot 132 is provided with a guide surface 133; or, both the buckle 131 and the structure forming the slot 132 are provided with guide surfaces 133. The guide surface 133 is used to guide the buckle 131 into the slot 132, reducing the difficulty of fitting the buckle 131 and the slot 132, thereby facilitating the detachable connection between the noise reduction component 115 and the shell body 114 using the connecting structure 130.

[0132] In some embodiments, combined with Figure 7 , Figure 8 and Figure 9 As shown, the guide surface 133 is an inclined surface formed on the structure of the buckle 131 and / or the slot 132. The inclined surface is used to guide the relative displacement direction of the buckle 131 and the slot 132 on the one hand, and to facilitate the assembly of the buckle 131 into the slot 132 on the other hand, thereby facilitating the snap-fit ​​engagement of the buckle 131 and the slot 132, reducing the difficulty of engaging the buckle 131 and the slot 132, and thus reducing the difficulty of detachable connection between the noise reduction component 115 and the shell body 114.

[0133] In some embodiments, combined with Figure 1 , Figure 2 and Figure 3 As shown, the volute 110 includes a first housing 116 and a second housing 117 disposed opposite to each other, defining an air outlet duct 111 between the first housing 116 and the second housing 117. The second housing 117 includes a housing body 114 and a noise reduction component 115. By configuring the volute 110 to include the first housing 116 and the second housing 117, and utilizing the cooperation between the first housing 116 and the second housing 117 to define the air outlet duct 111, the molding difficulty of the volute 110 and the air outlet duct 111 can be reduced.

[0134] Meanwhile, by configuring the second housing 117 to include the housing body 114 and the noise reduction component 115, the first noise reduction cavity 112 and the first noise reduction hole 113 connecting the first 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.

[0135] 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 second housing 117 is configured to include the housing body 114 and the noise reduction component 115, it is convenient to place the noise reduction component 115 on the top outer side of the volute 110, reducing the assembly difficulty of the noise reduction component 115.

[0136] Furthermore, placing the noise reduction component 115 on the top outer side of the volute 110 further reduces the assembly difficulty of the noise reduction component 115 compared to placing it on the bottom outer side of the volute 110.

[0137] Of course, in some other embodiments, the noise reduction element 115 may also be provided on the bottom outer side of the volute 110 (not shown in this example figure).

[0138] 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.

[0139] 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.

[0140] The following description of an embodiment of the ducted air conditioner 1000 of the present invention is based on the accompanying drawings.

[0141] Combination Figure 1 , Figure 2 and Figure 3 As shown, a ducted air conditioner 1000 according to an embodiment of the present invention includes: a housing 200, a partition 300, a heat exchanger 400, and a fan assembly 100.

[0142] Among them, combined Figure 1 , Figure 2 and Figure 3 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 chamber 210 and a fan chamber 220. The heat exchanger 400 is disposed inside the heat exchange chamber 210, and the fan assembly 100 is the aforementioned fan assembly 100. The fan assembly 100 is disposed inside the fan chamber 220. The specific structure of the fan assembly 100 will not be described in detail here.

[0143] In some embodiments, the heat exchanger 400 is located on the air outlet side of the fan assembly 100. When the duct air conditioner 1000 is running, the impeller 140 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 140 sends the air in the duct 111 to the heat exchanger 400. The heat exchanger 400 exchanges heat with the air flowing through it, and then blows the heat-exchanged air into the room to regulate the indoor air temperature.

[0144] Meanwhile, since the first noise reduction cavity 112 is defined inside the volute 110 and is connected to the air duct 111, when the air passes through the air duct 111, the noise can enter the first noise reduction cavity 112 through the first noise reduction hole 113 for noise reduction, so that the duct air conditioner 1000 generates less noise and has better overall performance when it is in operation.

[0145] As can be seen from the above structure, the ducted air conditioner 1000 of the present invention, 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.

[0146] 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 220, so as to improve the air supply effect of the duct air conditioner 1000 by using multiple fan assemblies 100 in coordination, thereby improving the working performance of the duct air conditioner 1000 to a certain extent.

[0147] In some embodiments, combined with Figure 2 , Figure 3 and Figure 10 As shown, the separator 300 defines a connection port 310, which connects the heat exchange chamber 210 and the outlet 1111 of the air duct 111. This allows the heat exchange chamber 210 and the air duct 111 to be connected, enabling air from the air duct 111 to be delivered into the heat exchange chamber 210. The heat exchanger 400 within the heat exchange chamber 210 then regulates the temperature of the air delivered through the air duct 111, facilitating the delivery of air at a specific temperature into the room and improving indoor comfort.

[0148] Optionally, the separator 300 defines a second noise reduction cavity (not shown in the figure). The second noise reduction cavity and the connecting port 310 are connected through a second noise reduction hole. A second silencing component is provided inside the second noise reduction hole, and there is a gap between the second silencing component and the hole wall of the second noise reduction hole. The second silencing component is used to reduce the flow area of ​​the second noise reduction hole. By configuring the second noise reduction cavity to connect to the connecting port 310 through the second noise reduction hole, when airflow passes through the connecting port 310, the sound waves in the airflow can enter the second noise reduction cavity through the second noise reduction hole. This facilitates the use of the second noise reduction hole and the second noise reduction cavity to absorb noise of a specific frequency, achieving the purpose of noise reduction.

[0149] Meanwhile, by setting a second silencing component inside the second noise reduction hole and configuring the second silencing component to have a gap with the hole wall of the second noise reduction hole, the second silencing component can reduce the flow area of ​​the second noise reduction hole. In this way, while enabling the second noise reduction hole to connect the second noise reduction cavity and the connecting port 310, it can also prevent sound waves from entering the second noise reduction cavity through the second noise reduction hole and generating whistling sound. This achieves the elimination of whistling sound by using the second silencing component, thereby further reducing the noise generated by the fan assembly 100 during operation and improving the noise reduction effect of the second noise reduction hole and the second noise reduction cavity working together.

[0150] The relationship between the second silencing component and the second noise reduction hole, as well as the specific structure of the second silencing component, can be found in the first silencing component 150, and will not be elaborated here.

[0151] The ducted air conditioner 1000 of this application is described in detail below with reference to the accompanying drawings.

[0152] Among them, combined Figure 1 , Figure 2 and Figure 3 As shown, a ducted air conditioner 1000 according to an embodiment of the present invention includes: a fan assembly 100, a housing 200, a partition 300, and a heat exchanger 400.

[0153] Combination Figure 1 , Figure 2 and Figure 3 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 chamber 210 and a fan chamber 220. The heat exchanger 400 is disposed inside the heat exchange chamber 210, and the fan assembly 100 is disposed inside the fan chamber 220.

[0154] Combination Figure 3 , Figure 10 and Figure 12 As shown, the fan assembly 100 includes a volute 110 and a fan wheel 140. The volute 110 includes a housing body 114 and a noise reduction component 115. The housing body 114 defines an air duct 111. The fan wheel 140 is rotatably disposed within the air duct 111 to drive the airflow within the air duct 111.

[0155] Combination Figure 7 , Figure 8 , Figure 9 , Figure 12 and Figure 13 As shown, the noise reduction component 115 includes a noise reduction plate 1151 and a partition rib 1152. The noise reduction plate 1151 is located on the outside of the shell body 114 and is disposed opposite to the shell body 114. The opposite ends of the noise reduction plate 1151 are detachably connected to the shell body 114 through a connecting structure 130. The connecting structure 130 includes a snap-fit ​​buckle 131 and a slot 132. The snap-fit ​​buckle 131 is located on the noise reduction component 115, and the slot 132 is located on the shell body 114. The snap-fit ​​buckle 131 and the structure forming the slot 132 are provided with a guide surface 133, which is used to guide the snap-fit ​​buckle 131 into the slot 132.

[0156] Combination Figure 5 , Figure 6 , Figure 12 and Figure 13As shown, a first noise reduction cavity 112 is defined between the noise reduction plate 1151 and the shell body 114. A partition rib 1152 is located between the noise reduction plate 1151 and the shell body 114. There are multiple partition ribs 1152. Each partition rib 1152 includes at least one first protruding rib 1153 and at least one second protruding rib 1154. The first protruding rib 1153 and the second protruding rib 1154 are set at an angle. The noise reduction plate 1151 and the partition rib 1152 are integrally formed. The shell body 114 and the partition rib 1152 are in a stop-fitting cooperation so that multiple first noise reduction cavities 112 are formed between the noise reduction plate 1151 and the shell body 114. The shell body 114 is provided with multiple first noise reduction holes 113. The multiple first noise reduction holes 113 correspond one-to-one with the multiple first noise reduction cavities 112 so that each first noise reduction cavity 112 is connected to the air duct 111 through a first noise reduction hole 113.

[0157] Combination Figure 4 , Figure 5 and Figure 6 As shown, a first noise reduction component 150 is provided inside the first noise reduction hole 113. The first noise reduction component 150 is at least partially disposed inside the first noise reduction cavity 112 and is connected to the noise reduction plate 1151. The first noise reduction component 150 is a noise reduction column, and at least part of the noise reduction column is inserted into the first noise reduction hole 113. The outer peripheral wall of the noise reduction column is spaced apart from the peripheral wall of the first noise reduction hole 113. The first noise reduction component 150 is used to reduce the flow area of ​​the first noise reduction hole 113.

[0158] Combination Figure 4 , Figure 5 and Figure 6 As shown, the first noise reduction hole 113 has a first opening 1131 and a second opening 1132 at both ends. The first opening 1131 is located near the air duct 111 and the second opening 1132 is located near the first noise reduction cavity 112. The surface of the first silencing component 150 near the air duct 111 is located on the side of the plane or curved surface where the first opening 1131 is located away from the impeller 140. The outer diameter of at least part of the silencing column in the first noise reduction hole 113 gradually decreases along the direction near the air duct 111.

[0159] Combination Figure 2 , Figure 3 and Figure 10 As shown, the separator 300 defines a connecting port 310, which connects the heat exchange chamber 210 and the outlet 1111 of the air duct 111. The separator 300 defines a second noise reduction chamber, which is connected to the connecting port 310 through a second noise reduction hole. A second silencing component is provided in the second noise reduction hole, and there is a gap between the second silencing component and the hole wall of the second noise reduction hole. The second silencing component is used to reduce the flow area of ​​the second noise reduction hole.

[0160] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 invention based on the specific circumstances.

[0161] Figure 1 and Figure 2 The above description shows three wind turbine components 100 for illustrative purposes. However, after reading the above technical solution, those skilled in the art will obviously understand that applying the solution to one, two, four or more wind turbine components 100 would also fall within the scope of protection of this invention.

[0162] 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 embodiments of the present invention, such as the impeller 140, heat exchanger 400, etc., are known to those skilled in the art and will not be described in detail here.

[0163] In the description of this specification, references to terms such as "embodiment," "example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, 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.

[0164] Although embodiments of the 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 invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A fan assembly, characterized in that, include: A volute, the volute defining an air outlet duct and a first noise reduction cavity, the first noise reduction cavity and the air outlet duct being connected through a first noise reduction hole; A wind turbine, which is rotatably disposed within the air duct to drive the airflow within the air duct; The first noise reduction hole is provided with a first silencing component, and there is a gap between the first silencing component and the hole wall of the first noise reduction hole. The first silencing component is used to reduce the flow area of ​​the first noise reduction hole.

2. The wind turbine assembly according to claim 1, characterized in that, The first noise reduction hole has a first opening and a second opening at both ends. The first opening is located near the air duct and the second opening is located near the first noise reduction cavity. The surface of the first sound-absorbing component near the air duct is located on the side of the plane or curved surface where the first opening is located away from the wind turbine.

3. The wind turbine assembly according to claim 1, characterized in that, The first noise reduction component is a noise reduction column, at least a portion of which is inserted into the first noise reduction hole, and the outer peripheral wall of the noise reduction column is spaced apart from the peripheral wall of the first noise reduction hole.

4. The wind turbine assembly according to claim 3, characterized in that, The outer diameter of at least a portion of the sound-absorbing column located within the first noise reduction hole gradually decreases along the direction close to the air duct; And / or, the flow area of ​​the first noise reduction hole is smaller than the flow area of ​​the first noise reduction cavity, and the aperture of the first noise reduction hole gradually decreases along the direction close to the air duct.

5. The wind turbine assembly according to claim 1, characterized in that, The volute includes: Shell body; A noise reduction component is disposed on the shell body and participates in forming the first noise reduction cavity.

6. The wind turbine assembly according to claim 5, characterized in that, The number of the first noise reduction cavity and the number of the first noise reduction hole are both multiple, and the multiple first noise reduction holes correspond one-to-one with the multiple first noise reduction cavities; And / or, the number of the first noise reduction holes is multiple, and each of the first noise reduction holes is provided with the first sound-absorbing component.

7. The wind turbine assembly according to claim 5, characterized in that, The shell body includes a mounting wall, and the noise reduction component and the mounting wall are arranged and connected in the inner and outer directions of the air duct to form the first noise reduction cavity. The first noise reduction hole is provided on one of the noise reduction component and the mounting wall located on the inner side.

8. The wind turbine assembly according to claim 7, characterized in that, The first noise-reducing component is at least partially disposed within the first noise-reducing cavity and is connected to one of the noise-reducing components and the mounting wall located on the outer side.

9. The wind turbine assembly according to claim 7, characterized in that, The volute has a volute tongue, and the volute tongue and the mounting wall are located near the outlet of the air duct and on opposite sides of the outlet.

10. The wind turbine assembly according to claim 7, characterized in that, The noise reduction component includes: A noise reduction plate, wherein the noise reduction plate is disposed opposite to the shell body; A partition rib is located between the noise reduction plate and the shell body to form a plurality of first noise reduction cavities between the noise reduction plate and the shell body. Each first noise reduction cavity is connected to the air duct through at least one first noise reduction hole.

11. The wind turbine assembly according to claim 10, characterized in that, The number of the partition ribs is multiple, and the multiple partition ribs are arranged at intervals; Alternatively, the number of the dividing ribs may be multiple, including at least one first rib and at least one second rib, wherein the first rib and the second rib are arranged at an angle.

12. The wind turbine assembly according to claim 10, characterized in that, 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.

13. The wind turbine assembly according to any one of claims 5-12, characterized in that, The noise reduction component is disposed on the outside of the shell body and defines the first noise reduction cavity between itself and the shell body; the first noise reduction hole is disposed on the shell body. Wherein, a portion of the first silencing component is disposed within the first noise reduction cavity and connected to the noise reduction component, and another portion is disposed within the first noise reduction hole.

14. The wind turbine assembly according to claim 13, characterized in that, The two opposite ends of the noise reduction component are detachably connected to the shell body via a connecting structure.

15. The wind turbine assembly according to claim 14, characterized in that, At least one of the connection structures includes a snap-fit ​​buckle and a slot, one of which is located on the housing body and the other is located on the noise reduction component.

16. The wind turbine assembly according to claim 15, characterized in that, The buckle and / or the structure forming the slot are provided with a guide surface for guiding the buckle to be inserted into the slot.

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

18. The ducted air conditioner according to claim 17, characterized in that, The separator defines a communication port that connects the heat exchange chamber and the outlet of the air duct. The separator defines a second noise reduction cavity, which is connected to the communication port through a second noise reduction hole. The second noise reduction hole is provided with a second silencing component, and there is a gap between the second silencing component and the hole wall of the second noise reduction hole. The second silencing component is used to reduce the flow area of ​​the second noise reduction hole.

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