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 is communicated with the air channel through a first noise reduction hole, and the wind wheel is rotatably arranged in the air channel to drive airflow in the air channel to flow. A first silencing piece is arranged in the first noise reduction hole, a gap is formed between the first silencing piece and the hole wall of the first noise reduction hole, and the first silencing piece 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 utility model, the volute is utilized to define the communicated 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 the 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] The utility model relates to the technical field of air conditioning, in particular to a fan assembly and a duct-type air conditioner having the same. Background Art

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

[0003] In the prior art, in order to reduce the noise generated by the operation of the centrifugal impeller, sound-absorbing cotton is usually used for noise reduction. The sound-absorbing cotton not only increases the overall size of the fan assembly, but also fails to eliminate low-frequency noise, resulting in the fan assembly still making a lot of noise during operation. Utility Model Content

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a fan assembly that can reduce operating noise without increasing the size of the entire machine, thereby solving the technical problem of high operating noise in the prior art fan assembly.

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

[0006] According to an embodiment of the present invention, the fan assembly includes: a volute, which defines an air duct and a first noise reduction chamber, and the first noise reduction chamber and the air duct are connected through a first noise reduction hole; a wind wheel, which is rotatably arranged in the air duct to drive the air flow in the air duct; wherein a first silencer is provided in the first noise reduction hole, and a gap is provided between the first silencer and the hole wall of the first noise reduction hole, and the first silencer is used to reduce the flow area of ​​the first noise reduction hole.

[0007] According to the fan assembly of the embodiment of the present invention, the connecting air duct and the first noise reduction chamber are defined by utilizing the volute, the first noise reduction chamber is configured to connect the air duct through the first noise reduction hole, and a first silencer is arranged in the first noise reduction hole. This can achieve the purpose of reducing the noise generated by the fan assembly during operation without increasing the size of the entire machine, so that the fan assembly has the advantages of occupying a small space and having 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 arranged close to the air duct and the second opening is arranged close to the first noise reduction cavity, and the side surface of the first silencer close to the air duct is located on the side of the plane or curved surface where the first opening is located away from the wind wheel.

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

[0010] In some embodiments, the outer diameter of at least a portion of the silencer column within the first noise reduction hole gradually decreases in the direction approaching 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 in the direction approaching the air duct.

[0011] In some embodiments, the volute includes: a shell body; a noise reduction component, wherein the noise reduction component is provided on the shell body, and the noise reduction component participates in forming the first noise reduction cavity.

[0012] In some embodiments, the number of the first noise reduction cavities and the number of the first noise reduction holes are respectively multiple, and the multiple first noise reduction holes correspond one-to-one to the multiple first noise reduction cavities; and / or, the number of the first noise reduction holes is multiple, and the first silencer is provided in each of the first noise reduction holes.

[0013] In some embodiments, the shell body includes a mounting wall, the noise reduction component 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 provided on one of the noise reduction component and the mounting wall located on the inner side.

[0014] In some embodiments, the first sound-reducing member is at least partially disposed in the first noise reduction cavity and is connected to one of the noise reduction member and the mounting wall located on the outside.

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

[0016] In some embodiments, the noise reduction component includes: a noise reduction plate, which is arranged opposite to the shell body; and a separating rib, which is located between the noise reduction plate and the shell body, so that a plurality of first noise reduction cavities are formed between the noise reduction plate and the shell body, and each first noise reduction cavity is connected to the air duct through at least one first noise reduction hole.

[0017] In some embodiments, there are multiple dividing ribs, and the multiple dividing ribs are arranged at intervals; or, there are multiple dividing ribs, and they include at least one first convex rib and at least one second convex rib, and the first convex rib and the second convex rib are arranged at an angle.

[0018] In some embodiments, one of the noise reduction plate and the shell body is integrally formed with the separation rib, and the other is abutted against the separation rib.

[0019] In some embodiments, the noise reduction component is arranged on the outside of the shell body and defines the first noise reduction cavity between the shell body, and the first noise reduction hole is arranged in the shell body; wherein, a part of the first silencer is arranged in the first noise reduction cavity and connected to the noise reduction component, and the other part is arranged in the first noise reduction hole.

[0020] In some embodiments, opposite ends of the noise reduction component are detachably connected to the shell body via connection structures.

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

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

[0023] According to an embodiment of the present invention, the duct-type air conditioner includes: an outer shell; a partition, which is arranged in the outer shell to separate the inner cavity of the outer shell into a heat exchange cavity and a fan cavity; a heat exchanger, which is arranged in the heat exchange cavity; and a fan assembly, which is the aforementioned fan assembly and is arranged in the fan cavity.

[0024] According to the duct air conditioner of the embodiment of the present invention, by adopting the aforementioned fan assembly, it is possible to reduce the noise generated by the duct air conditioner during operation without increasing the overall size of the duct air conditioner, thereby improving the user experience.

[0025] In some embodiments, the partition defines a connecting port, which connects between the heat exchange chamber and the outlet of the air duct; wherein, the partition defines a second noise reduction chamber, the second noise reduction chamber and the connecting port are connected through a second noise reduction hole, a second silencer is provided in the second noise reduction hole, and there is a gap between the second silencer and the hole wall of the second noise reduction hole, and the second silencer is used to reduce the flow area of ​​the second noise reduction hole.

[0026] Additional aspects and advantages of the present invention will become apparent from the following description or may be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[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 in conjunction with the following drawings, in which:

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

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

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

[0031] Figure 4 for Figure 1 The bottom view of the ducted air conditioner after omitting some structures.

[0032] Figure 5 for Figure 4 Cross-sectional view along line BB.

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

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

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

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

[0037] Figure 10 This is an exploded view of the duct-type air conditioner in some embodiments of the present invention with some structures omitted.

[0038] Figure 11 for Figure 10 Magnified view of middle region IV.

[0039] Figure 12 for Figure 10 Schematic diagram of the duct air conditioner from another angle.

[0040] Figure 13 Schematic diagram of noise reduction components according to some embodiments of the present invention.

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

[0042] Figure 15 Schematic diagram of the coordination between the noise reduction cavity and the noise reduction hole in some embodiments of the present invention.

[0043] Reference numerals:

[0044] 1000, duct air conditioner;

[0045] 100. Fan assembly;

[0046] 110, volute;

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

[0048] 112. First noise reduction chamber;

[0049] 113, first noise reduction hole; 1131, first opening; 1132, second opening;

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

[0051] 115. Noise reduction parts;

[0052] 1151, noise reduction board;

[0053] 1152, separation rib; 1153, first convex rib; 1154, second convex rib;

[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 wheel;

[0059] 150, first silencer;

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

[0061] 300, separator; 310, communication port;

[0062] 400. Heat exchanger. DETAILED DESCRIPTION

[0063] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0064] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0065] When the duct air conditioner is running, the rotation of the wind wheel works to suck the air outside the duct air conditioner into the wind wheel, and then the air is pressurized by the wind wheel and sent to the room to form a circulation. In this process, the high-speed rotation of the wind wheel causes the air flow to flow through the blades. Due to the influence of the viscous friction of air molecules, the air flow with a certain speed interacts with the relatively static air flow behind the blades, forming an air flow with vortices in the downstream area of ​​the blades. These vortices are constantly changing and falling off. The pressure at the center of each vortex is lower than the pressure of the surrounding medium. When a vortex falls off, a pressure jump occurs in the turbulent airflow. These jump pressures propagate outward through the surrounding medium and act on the blades. When the pressure pulsation in the turbulent flow contains audible frequency components and the intensity is large enough, noise is radiated to form turbulent noise.

[0066] At the same time, when the wind wheel rotates, the blades sweep the air at the adjacent position. Due to the mutuality of forces, the gas medium is affected by the blades, generating a periodic pressure field and emitting noise; when the airflow flows through the blades, the boundary layers of the suction surface and the pressure surface at the trailing edge converge to form a wake area. In the wake area, the pressure and speed of the airflow are much lower than those in the mainstream area. When the wind wheel rotates, the airflow in the blade outlet area is very uneven. This uneven potential flow field periodically acts on the surrounding obstacles, which will produce noise similar to the sound produced by stroking the strings of a guitar, increasing the noise generated during the operation of the ducted air conditioner and reducing the user experience.

[0067] In order to solve the above problems, sound-absorbing cotton is usually installed in duct air conditioners to reduce noise. The sound-absorbing cotton usually has a porous structure. When sound waves enter these holes, they will rub against the air inside, thereby converting the sound energy into heat energy to absorb medium and high frequency sound energy and achieve the purpose of noise reduction.

[0068] However, since sound-absorbing cotton is a solid material with a porous structure, not a pure solid material, and because the wavelength of low-frequency noise is relatively long, low-frequency noise can easily bypass the sound-absorbing cotton and continue to propagate, which leads to the sound-absorbing cotton's limited absorption of low-frequency noise, resulting in the ducted air conditioner still making a lot of noise during operation.

[0069] To solve the above problems, the present application proposes a fan assembly 100 .

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

[0071] Combine 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 wheel 140 .

[0072] Among them, combined Figure 2-Figure 6 As shown, the volute 110 defines an air duct 111 and a first noise reduction chamber 112, which are connected to the air duct 111 via a first noise reduction hole 113. This allows the first noise reduction chamber 112 and the air duct 111 to be connected in a coordinated manner. When air flows in the air duct 111, noise in the air duct 111 can enter the first noise reduction chamber 112 through the first noise reduction hole 113. This allows the first noise reduction hole 113 and the first noise reduction chamber 112 to cooperate in absorbing noise of a specific frequency, thereby achieving the purpose of noise reduction.

[0073] In some embodiments, combined Figure 3-Figure 6 As shown, the first noise reduction hole 113 is arranged between the first noise reduction chamber 112 and the air duct 111 and connects the first noise reduction chamber 112 and the air duct 111 respectively, so as to facilitate the use of the first noise reduction hole 113 to achieve the coordinated connection between the first noise reduction chamber 112 and the air duct 111, thereby reducing the difficulty of connecting the first noise reduction chamber 112 and the air duct 111.

[0074] It is worth noting that the present application directly uses the volute 110 to define the first noise reduction chamber 112, which not only reduces the difficulty of forming the first noise reduction chamber 112, but also avoids setting up structural parts that separately form the first noise reduction chamber 112, which is beneficial to simplifying the structure of the fan assembly 100, reducing the manufacturing difficulty and manufacturing cost of the fan assembly 100, and at the same time avoiding increasing the size of the fan assembly 100, thereby reducing 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 occupying a small space and having low operating noise.

[0075] Combine Figure 2 and Figure 3As shown, the wind wheel 140 is rotatably disposed in the air duct 111 to drive the air flow in the air duct 111. In this way, the wind wheel 140 can be used to introduce air outside the air duct 111 into the air duct 111 through one side of the air duct 111, and the wind wheel 140 can be used to discharge air inside the air duct 111 through the other side of the air duct 111, thereby facilitating the circulation of air, thereby facilitating the delivery of air of a specific temperature into the room, 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 will be generated during the rotation of the wind wheel 140 and the flow of air. In order to reduce the noise, the present application uses the volute 110 to define a first noise reduction chamber 112, and sets the first noise reduction chamber 112 to be connected to the air duct 111, so that the first noise reduction hole 113 and the first noise reduction chamber 112 can cooperate to absorb the noise generated during the rotation of the wind wheel 140 and the flow of air, thereby achieving the purpose of noise reduction.

[0077] In a specific example, during the rotation of the wind wheel 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 produce reflections. 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, causing the sound waves to be attenuated in the first noise reduction cavity 112, thereby achieving the effect of noise reduction.

[0078] Among them, combined Figure 4 、 Figure 5 and Figure 6 As shown, a first muffler 150 is provided in the first noise reduction hole 113 , and a gap is provided between the first muffler 150 and the hole wall of the first noise reduction hole 113 . The first muffler 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 air duct 111 , a whistling sound is generated when high-speed wind blows through the first noise reduction hole 113 , affecting the noise reduction effect of the first noise reduction cavity 112 .

[0080] Based on this, the present application provides a first silencer 150 in the first noise reduction hole 113, and sets the first silencer 150 to have a gap with the hole wall of the first noise reduction hole 113, so as to realize the use of the first silencer 150 to reduce the flow area of ​​the first noise reduction hole 113. In this way, while the first noise reduction hole 113 can be connected to the air duct 111, the first silencer 150 can also be used to eliminate the 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 achieving the purpose of 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 silencer 150 in the first noise reduction hole 113, which not only reduces the flow area of ​​the first noise reduction hole 113, but also adaptively increases the size of the first noise reduction hole 113, thereby reducing the difficulty of forming the first noise reduction hole 113, thereby achieving the goal of reducing the difficulty of forming the first noise reduction hole 113 while reducing the whistling sound.

[0083] It can be seen from the above structure that the fan assembly 100 of the embodiment of the present invention, by utilizing the volute 110 to define the air duct 111 and the first noise reduction chamber 112, can reduce the difficulty of forming the first noise reduction chamber 112 on the one hand, and can also avoid setting up structural parts that separately form the first noise reduction chamber 112 on the other hand, thereby 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 occupying a small space.

[0084] At the same time, the first noise reduction chamber 112 and the air duct 111 are arranged to be connected through the first noise reduction hole 113, so that during the rotation of the wind wheel 140 and the flow of air, the sound waves in the air duct 111 can enter the first noise reduction chamber 112, so that the first noise reduction hole 113 and the first noise reduction chamber 112 can cooperate to absorb the noise generated during the rotation of the wind wheel 140 and the flow of air, thereby achieving the purpose of noise reduction, thereby reducing the noise generated by the fan assembly 100 during operation, so that the fan assembly 100 has the advantage of low working noise, thereby improving the user experience.

[0085] In addition, by providing a first silencer 150 in the first noise reduction hole 113, not only can the first noise reduction hole 113 be prevented from generating a whistling sound during noise reduction, but the difficulty of forming the first noise reduction hole 113 can also be reduced, thereby reducing the noise reduction difficulty and the molding difficulty of the fan assembly 100. As a result, the fan assembly 100 not only has the advantage of low working noise, but also has low noise reduction difficulty.

[0086] It can be understood that compared with the prior art, the fan assembly 100 of the present application uses the volute 110 itself to define the first noise reduction chamber 112, and configures the first noise reduction chamber 112 to be connected to the air duct 111 through the first noise reduction hole 113, and a first silencer 150 is provided in the first noise reduction hole 113. Not only can the first noise reduction chamber 112 and the first noise reduction hole 113 be used to cooperate in noise reduction during the rotation of the wind wheel 140 and during the flow of air, but the molding difficulty of the first noise reduction chamber 112 and the first noise reduction hole 113 can also be reduced, and the structure of the first noise reduction chamber 112 can be simplified, so as to reduce 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 first noise reduction hole 113 has a diameter of 1 mm to 1.5 mm, which reduces the difficulty of forming the first noise reduction hole 113 and enables the whistling sound to be effectively eliminated after the first muffler 150 is provided.

[0088] In some embodiments, combined 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 chamber 112. The surface of the first muffler 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 wind wheel 140. By providing the first opening 1131 and the second opening 1132 at both ends of the first noise reduction hole 113, the first noise reduction chamber 112 and the air duct 111 can be connected to each other through the first noise reduction hole 113, thereby reducing the difficulty of connecting the first noise reduction chamber 112 and the air duct 111.

[0089] At the same time, by setting the side surface of the first silencer 150 close to the air duct 111 to be located on the side of the plane or curved surface where the first opening 1131 is located, away from the wind wheel 140, it is possible to avoid, to a certain extent, the outer surface of the first silencer 150 facing the wind wheel 140 protruding from the plane or curved surface where the first opening 1131 is located, that is, to a certain extent, the first silencer 150 is avoided from being arranged in the air duct 111, and further to a certain extent, the noise generated by the first silencer 150 protruding from the first noise reduction hole 113 is avoided, thereby further reducing the noise generated by the fan assembly 100 during operation.

[0090] In some embodiments, combined Figure 5 、 Figure 6 and Figure 13As shown, the first muffler 150 is a muffler column, at least a portion of which is inserted into the first noise reduction hole 113, and the outer peripheral wall of the muffler column is spaced apart from the peripheral wall of the first noise reduction hole 113. By configuring the first muffler 150 as a muffler column, the difficulty of molding the first muffler 150 can be reduced, and the performance of the first muffler 150 can be guaranteed to a certain extent. At least a portion of the muffler column is inserted into the first noise reduction hole 113, and the outer peripheral wall of the first muffler 150 can be effectively spaced apart from the peripheral wall of the first noise reduction hole 113. This allows the first noise reduction hole 113 to communicate with the air duct 111 while also allowing the first muffler 150 to eliminate whistling sounds, thereby reducing the noise generated by the fan assembly 100 during operation and enhancing 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 silencer column is smaller than the aperture of the first noise reduction hole 113 , so that when at least part of the silencer column is inserted into the first noise reduction hole 113 , the outer peripheral wall of the silencer column can be effectively separated from the peripheral wall of the first noise reduction hole 113 .

[0092] In some embodiments, combined Figure 4 、 Figure 5 and Figure 6 As shown, the outer diameter of at least part of the muffler column in the first noise reduction hole 113 gradually decreases as it approaches the air duct 111. This facilitates the insertion and mating of the muffler column in the first noise reduction hole 113, reduces the difficulty of assembling the muffler column and the first noise reduction hole 113, and further reduces the difficulty of silencing the first noise reduction hole 113.

[0093] In some embodiments, combined 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 in the direction close to the air duct 111. 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 formed to be similar to a Helmholtz resonator (such as Figure 15As shown), when the air flows from the first noise reduction hole 113 into the first noise reduction chamber 112, since the flow area of ​​the first noise reduction chamber 112 is larger than the flow area of ​​the first noise reduction hole 113, the flow velocity of the air in the first noise reduction chamber 112 is much lower than the flow velocity of the local airflow in the center of the first noise reduction chamber 112, thereby forming a more violent shear flow in the first noise reduction chamber 112, accompanied by an unstable disturbance wave. At the same time, if the air column in the first noise reduction hole 113 is disturbed and moves into the first noise reduction chamber 112, the first noise reduction hole 113 will be in a state of being unstable. The gas in the first noise reduction chamber 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. After passing the equilibrium position, it continues to move outward due to inertia, which reduces the pressure in the first noise reduction chamber 112. In turn, the air column in the first noise reduction hole 113 stops moving outward and moves inward again, over and over again. When the frequency of the disturbance wave matches the frequency of the incoming air flow, 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, so 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 according to the frequency of the noise to be eliminated.

[0095] That is to say, the combination of the first noise reduction hole 113 and the first noise reduction cavity 112 can absorb noise of a specific frequency. In this way, the first noise reduction hole 113 and the first noise reduction cavity 112 can be used to absorb low-frequency noise, thereby achieving the purpose of noise reduction, reducing the noise generated by the fan assembly 100 during operation to a certain extent, and improving the user experience.

[0096] Among them, the noise frequency to be eliminated S is the cross-sectional area of ​​the first noise reduction hole 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 hole 113 (for details, see Figure 15 ).

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

[0098] At the same time, by setting the aperture of the first noise reduction hole 113 to gradually decrease in the direction approaching the air duct 111, the aperture of the first noise reduction hole 113 can be gradually increased 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 silencer 150 into the first noise reduction hole 113 through the second opening 1132, thereby reducing the difficulty of assembling the first silencer 150 and the first noise reduction hole 113.

[0099] In addition, the Helmholtz resonator has three applications in physics: first, due to the friction inside the tube, it can absorb energy; second, due to the radiation from the tube mouth, it diffuses the incident wave; third, it can store energy inside and prolong the action time.

[0100] In some embodiments, combined Figure 6 、 Figure 10 and Figure 12 As shown, the volute 110 includes a shell body 114 and a noise reduction member 115. The noise reduction member 115 is disposed on the shell body 114 and helps to enclose a first noise reduction chamber 112. It can also be understood that the first noise reduction chamber 112 is defined by the noise reduction member 115, for example: the first noise reduction chamber 112 is defined by the shell body 114 and the noise reduction member 115 in cooperation; or, the first noise reduction chamber 112 is defined solely by the noise reduction member 115, so as to achieve the goal of using the volute 110 to define the first noise reduction chamber 112, reduce the difficulty of forming the first noise reduction chamber 112, and achieve the goal of using the volute 110 itself to define the first noise reduction chamber 112, to a certain extent avoid adding new structural parts to form the first noise reduction chamber 112, and thus avoid increasing the size of the fan assembly 100, so as to reduce the noise generated by the fan assembly 100 during operation without increasing the size of the entire machine, thereby making the fan assembly 100 have the advantages of small footprint and low operating noise, thereby improving the user experience.

[0101] In some embodiments, combined Figure 5 、 Figure 12 and Figure 13 As shown, the noise reduction member 115 includes a noise reduction plate 1151, which is disposed on the outside 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. The first noise reduction hole 113 is provided in the shell body 114. In other words, the first noise reduction cavity 112 of the present application is formed by the cooperation between the noise reduction plate 1151 and the shell body 114, thereby defining the first noise reduction cavity 112 using the volute 110 and reducing the difficulty of forming the first noise reduction cavity 112.

[0102] At the same time, based on the fact that the noise reduction component 115 is arranged on the outside of the shell body 114 and the first noise reduction cavity 112 is formed between the noise reduction plate 1151 and the shell body 114, the present application sets a first noise reduction hole 113 on the shell body 114 to realize that the first noise reduction hole 113 is arranged 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 use of the first noise reduction hole 113 to realize the coordinated connection of the first noise reduction cavity 112 and the air duct 111, thereby reducing the difficulty of connecting the first noise reduction cavity 112 and the air duct 111.

[0103] It is worth noting that the present application arranges the noise reduction component 115 on the outside of the shell body 114. On the one hand, the noise reduction component 115 can be directly installed on the outside of the shell body 114, reducing the difficulty of assembling the noise reduction component 115, and then reducing the difficulty of forming the first noise reduction cavity 112, so as to facilitate the use of the first noise reduction cavity 112 for noise reduction; on the other hand, it can also avoid the noise reduction component 115 occupying the space in the air duct 111, thereby improving 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 on the inner side of the shell body 114 so as to utilize the shell body 114 to protect the noise reduction component 115 , which is not specifically limited here.

[0105] In some embodiments, combined 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, and the multiple first noise reduction holes 113 correspond one-to-one to the multiple first noise reduction cavities 112. It should be noted that the wavelength range of a single Helmholtz resonator is too narrow. Based on this, the present application provides multiple first noise reduction cavities 112 and multiple first noise reduction holes 113. The multiple first noise reduction cavities 112 and multiple first noise reduction holes 113 can form a combination of multiple Helmholtz resonators to 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 silencer 150. It can also be understood that there are multiple first silencers 150, and the multiple first silencers 150 correspond one-to-one to the multiple first noise reduction holes 113, so as to avoid whistling sounds generated by the first noise reduction holes 113 during noise reduction, thereby improving the noise reduction effect of the first noise reduction holes 113.

[0107] In some embodiments, combined Figure 3-Figure 6As shown, the housing body 114 includes a mounting wall 1143. The noise reduction member 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 chamber 112. The first noise reduction hole 113 is provided on the inner side of the noise reduction member 115 or the mounting wall 1143. This means that when the noise reduction member 115 is provided on the inner side of the mounting wall 1143, the first noise reduction hole 113 is provided on the noise reduction member 115. When the noise reduction member 115 is provided on the outer side of the mounting wall 1143, the first noise reduction hole 113 is provided on the mounting wall 1143. This allows the first noise reduction hole 113 to be provided between the first noise reduction chamber 112 and the air duct 111. This facilitates the coordinated communication between the first noise reduction chamber 112 and the air duct 111 through the first noise reduction hole 113, thereby reducing the difficulty of connecting the first noise reduction chamber 112 and the air duct 111.

[0108] In a specific example, combining Figure 3-Figure 6 As shown, the noise reduction member 115 is disposed on the outside of the mounting wall 1143, and the first noise reduction hole 113 is disposed on the mounting wall 1143. By disposing the noise reduction member 115 on the outside of the mounting wall 1143, the noise reduction member 115 can be directly mounted on the outside of the housing body 114, reducing the difficulty of assembling the noise reduction member 115 and, in turn, the difficulty of forming the first noise reduction cavity 112, thereby facilitating the use of the first noise reduction cavity 112 for noise reduction. Furthermore, the noise reduction member 115 can be prevented from occupying space within the air duct 111, thereby improving the air supply effect of the air duct 111.

[0109] In some embodiments, combined Figure 5 and Figure 6 As shown, the first muffler 150 is at least partially disposed in the first noise reduction cavity 112 , and the first muffler 150 is connected to the outer side of the noise reduction component 115 and the mounting wall 1143 . What this means is that when the noise reduction component 115 is arranged on the inner side of the mounting wall 1143, the first silencer 150 is connected to the mounting wall 1143; when the noise reduction component 115 is arranged on the outer side of the mounting wall 1143, the first silencer 150 is connected to the noise reduction component 115. While utilizing the noise reduction component 115 or the mounting wall 1143 to support the first silencer 150 to improve the positional stability of the first silencer 150, the first silencer 150 and the first noise reduction hole 113 can also be arranged on the noise reduction component 115 and the mounting wall 1143 respectively. In this way, during the assembly and connection process of the noise reduction component 115 and the mounting wall 1143, the first silencer 150 can be assembled in the first noise reduction hole 113, reducing the difficulty of matching the first silencer 150 and the first noise reduction hole 113, thereby reducing the difficulty of silencing the first noise reduction hole 113.

[0110] In a specific example, combining Figure 5 and Figure 6As shown, the noise reduction component 115 is arranged on the outside of the shell body 114 and defines a first noise reduction cavity 112 between the shell body 114 and the shell body 114, the first noise reduction hole 113 is arranged on the shell body 114, a part of the first silencer 150 is arranged in the first noise reduction cavity 112 and connected to the noise reduction component 115, and the other part is arranged in the first noise reduction hole 113, so as to realize that the noise reduction component 115 is arranged on the outside of the mounting wall 1143, the first noise reduction hole 113 is arranged on the mounting wall 1143, and the first noise reduction component 150 is connected to the noise reduction component 115, so as to realize that the first silencer 150 and the first noise reduction hole 113 are respectively arranged on the noise reduction component 115 and the mounting wall 1143, thereby reducing the difficulty of matching the first silencer 150 and the first noise reduction hole 113.

[0111] In some embodiments, the first muffler 150 is integrally formed with the noise reduction member 115. This not only ensures the coordinated connection between the first muffler 150 and the noise reduction member 115, but also reduces the difficulty of connecting the two members and improves the strength of the connection. This allows the first muffler 150 to fit within the first noise reduction hole 113 during the assembly and connection between the noise reduction member 115 and the mounting wall 1143. Furthermore, it improves the positional stability of the first muffler 150, thereby enhancing the performance of the first muffler 150.

[0112] Of course, in some other embodiments, the first silencer 150 and the noise reduction component 115 can also be formed as separate components. After the first silencer 150 and the noise reduction component 115 are processed, the first silencer 150 and the noise reduction component 115 are matched and connected (such as welding, bonding or bolting, etc.). In this way, the first silencer 150 and the noise reduction component 115 can also be matched and connected.

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

[0114] In some embodiments, combined Figure 5 、 Figure 6 、 Figure 12 and Figure 13As shown, the noise reduction member 115 includes a noise reduction plate 1151 and a separation rib 1152. The noise reduction plate 1151 is disposed opposite the shell body 114, and the separation rib 1152 is located between the noise reduction plate 1151 and the shell body 114. This forms a plurality of first noise reduction cavities 112 between the noise reduction plate 1151 and the shell body 114. Each first noise reduction cavity 112 communicates with the air duct 111 through at least one first noise reduction hole 113. This means that each first noise reduction cavity 112 communicates with 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 by utilizing the first noise reduction cavity 112.

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

[0116] In the description of the present invention, unless otherwise specified, “a plurality of” means two or more.

[0117] In some embodiments, there are multiple separating ribs 1152 , which are arranged at intervals to form multiple first noise reduction cavities 112 between the noise reduction plate 1151 and the shell body 114 , thereby reducing the difficulty of forming the multiple first noise reduction cavities 112 .

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

[0119] In other embodiments, combined Figure 12 and Figure 13 As shown, there are multiple separating ribs 1152, each of which includes at least one first rib 1153 and at least one second rib 1154. The first rib 1153 and the second rib 1154 are arranged at an angle. This allows the multiple separating ribs 1152 to form a larger number of first noise reduction cavities 112 between the noise reduction plate 1151 and the shell body 114, which not only reduces the difficulty of forming multiple first noise reduction cavities 112, but also improves the noise reduction effect.

[0120] In the description of the present invention, features defined as "first" or "second" may explicitly or implicitly include one or more such features, and are used to distinguish and describe features, without any distinction in order or importance.

[0121] In some embodiments, combined Figure 5 、 Figure 6 、 Figure 12 and Figure 13As shown, one of the noise reduction plate 1151 and the shell body 114 is integrally formed with the separation rib 1152, and the other is abutted against the separation rib 1152. This means that when the noise reduction plate 1151 and the separation rib 1152 are integrally formed, the shell body 114 and the separation rib 1152 are abutted against each other; or, when the shell body 114 and the separation rib 1152 are integrally formed, the noise reduction plate 1151 and the separation rib 1152 are abutted against each other. This reduces the difficulty of forming the separation rib 1152 and allows the opposite ends of the separation rib 1152 to abut against the noise reduction plate 1151 and the shell body 114, respectively. This ensures the sealing of each first noise reduction cavity 112 after assembly, thereby ensuring the noise reduction effect of the first noise reduction cavity 112.

[0122] In some embodiments, combined Figure 5 、 Figure 6 、 Figure 12 and Figure 13 As shown, the noise reduction plate 1151 and the separation rib 1152 are integrally formed. This reduces the difficulty of forming the separation rib 1152 and can also be used to support the separation rib 1152 using the noise reduction plate 1151, thereby improving the position stability of the separation rib 1152 and ensuring the performance of the separation 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 two opposite ends of the noise reduction member 115 are detachably connected to the shell body 114 through a connection structure 130 (the specific structure of the connection structure 130 can be seen in FIG. Figure 11 Here, the noise reduction member 115 is provided on the shell body 114 and forms a detachable fit with the shell body 114. On the one hand, this can reduce the difficulty of fitting the noise reduction member 115 and the shell body 114 and improve assembly efficiency. On the other hand, it can also enable the noise reduction member 115 and the shell body 114 to be formed into two independent parts. In this way, the noise reduction member 115 and the shell body 114 can be processed and formed separately during the production process, reducing the difficulty of forming the noise reduction member 115 and the shell body 114, and helping to ensure the quality of the noise reduction member 115 and the shell body 114 and improve the performance of the noise reduction member 115 and the shell body 114.

[0125] At the same time, by setting the opposite ends of the noise reduction component 115 to be detachably connected to the shell body 114 through the connecting 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, which is conducive to forming a structurally stable first noise reduction cavity 112 and improving the noise reduction effect.

[0126] In some embodiments, the noise reduction member 115 and the shell body 114 are separately injection molded, and then the noise reduction plate 1151 is disposed on the shell body 114 through the connecting structure 130 to assemble them into a whole, thereby forming the first noise reduction cavity 112 .

[0127] In some embodiments, combined 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 provided on the shell body 114, and the other is provided on the noise reducer 115. This means that when the buckle 131 is provided on the noise reducer 115, the slot 132 is provided on the shell body 114; and when the buckle 131 is provided on the shell body 114, the slot 132 is provided on the noise reducer 115. The buckle 131 snaps into the slot 132 to achieve a snap-fit ​​connection between the noise reducer 115 and the shell body 114, thereby achieving a detachable connection between the noise reducer 115 and the shell body 114. This facilitates installation of the noise reducer 115 and the shell body 114, reduces assembly difficulty, and improves assembly efficiency.

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

[0129] In other embodiments, a buckle 131 is provided on the shell body 114 and a slot 132 is provided on the noise reduction member 115 (not shown in the figure of this example).

[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 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 refers to the buckle 131 being provided with the guide surface 133; or the structure forming the slot 132 being provided with the guide surface 133; or alternatively, both the buckle 131 and the structure forming the slot 132 are provided with guide surfaces 133. The guide surfaces 133 are used to guide the buckle 131 into the slot 132, thereby reducing the difficulty of fitting the buckle 131 and the slot 132, thereby facilitating the detachable connection between the noise reduction member 115 and the housing body 114 using the connection structure 130.

[0132] In some embodiments, combined 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. On the one hand, the inclined surface is used to guide the relative displacement direction of the buckle 131 and the slot 132. On the other hand, it is convenient to assemble the buckle 131 in the slot 132, thereby facilitating the snap-fitting of the buckle 131 and the slot 132, reducing the difficulty of fitting the buckle 131 and the slot 132, and thereby reducing the difficulty of detachable connection between the noise reduction component 115 and the shell body 114.

[0133] In some embodiments, combined Figure 1 、 Figure 2 and Figure 3 As shown, the volute 110 includes a first shell 116 and a second shell 117 disposed opposite each other, defining an air duct 111 therebetween, and the second shell 117 includes a shell body 114 and a noise reduction member 115. By configuring the volute 110 to include the first shell 116 and the second shell 117, and utilizing the first shell 116 and the second shell 117 to cooperate in defining the air duct 111, the difficulty of molding the volute 110 and the air duct 111 can be reduced.

[0134] At the same time, by configuring the second shell 117 to include a shell body 114 and a noise reduction component 115, the structure of the volute 110 itself can be used to define a first noise reduction chamber 112 and a first noise reduction hole 113 connected to the first noise reduction chamber 112, thereby reducing the noise generated by the fan assembly 100 during operation without increasing the size of the entire machine, thereby making the fan assembly 100 have the advantages of occupying a small space and having low operating noise.

[0135] In some embodiments, combined Figure 1 、 Figure 2 and Figure 3 As shown, the first shell 116 is arranged below the second shell 117, so that the first shell 116 is formed as a lower volute and the second shell 117 is formed as an upper volute. In this way, when the second shell 117 is arranged to include a shell body 114 and a noise reducer 115, it is convenient to arrange the noise reducer 115 on the top outside of the volute 110, thereby reducing the difficulty of assembling the noise reducer 115.

[0136] In addition, arranging the noise reducer 115 on the top outer side of the volute 110 can further reduce the difficulty of assembling the noise reducer 115 compared to arranging the noise reducer 115 on the bottom outer side of the volute 110 .

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

[0138] In some embodiments, the first shell 116 and the second shell 117 are cooperatively connected to form the volute 110 , and to ensure the structural stability of the volute 110 and to ensure the working performance of the volute 110 to a certain extent.

[0139] A detachable connection (such as a bolt connection, a clamping connection, etc.) can be formed between the first shell 116 and the second shell 117 to reduce the difficulty of assembling the volute 110 .

[0140] The following describes the duct type air conditioner 1000 according to an embodiment of the present invention with reference to the accompanying drawings.

[0141] Combine Figure 1 、 Figure 2 and Figure 3 As shown, a duct-type 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 arranged in the outer shell 200, and the partition 300 divides the inner cavity of the outer shell 200 into a heat exchange cavity 210 and a fan cavity 220. The heat exchanger 400 is arranged in the heat exchange cavity 210. The fan assembly 100 is the aforementioned fan assembly 100, and the fan assembly 100 is arranged in the fan cavity 220. The specific structure of the fan assembly 100 is not repeated 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 wind wheel 140 in the air duct 111 rotates to drive the air flow in the air duct 111. At this time, the air outside the duct air conditioner 1000 can enter the air duct 111 through the air inlet of the air duct 111, and then the air in the air duct 111 is sent to the heat exchanger 400 through the wind wheel 140. The heat exchanger 400 exchanges heat with the air flowing through it, and then blows the heat-exchanged air into the room to adjust the indoor air temperature.

[0144] At the same time, since the first noise reduction chamber 112 is defined in the volute 110, the first noise reduction chamber 112 is connected to the air duct 111. In this way, when the air passes through the air duct 111, the noise can enter the first noise reduction chamber 112 through the first noise reduction hole 113 for noise reduction, so that the noise generated by the duct air conditioner 1000 in the operating state is small and the performance of the whole machine is good.

[0145] It can be seen from the above structure that the duct air conditioner 1000 of the embodiment of the present invention, by adopting the aforementioned fan assembly 100, can reduce the noise generated by the duct air conditioner 1000 during operation without increasing the overall size of the duct air conditioner 1000, thereby improving the user experience.

[0146] In some embodiments, combined Figure 1 、 Figure 2 and Figure 3 As shown, the fan assembly 100 includes multiple fan assemblies 100, and the multiple fan assemblies 100 are arranged in sequence in the fan cavity 220, so as to utilize the multiple fan assemblies 100 to cooperate to improve the air supply effect of the duct air conditioner 1000, thereby improving the working performance of the duct air conditioner 1000 to a certain extent.

[0147] In some embodiments, combined Figure 2 、 Figure 3 and Figure 10 As shown, the partition 300 defines a communication port 310 that communicates between 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 communicate with each other, allowing the air in the air duct 111 to be delivered to the heat exchange chamber 210. This allows the heat exchanger 400 in the heat exchange chamber 210 to adjust the temperature of the air delivered through the air duct 111, thereby facilitating the delivery of air of a specific temperature into the room, thereby improving indoor comfort.

[0148] Optionally, the partition 300 defines a second noise reduction chamber (not shown), which is connected to the connecting port 310 via a second noise reduction hole. A second silencer is provided in the second noise reduction hole, and a gap is provided between the second silencer and the hole wall of the second noise reduction hole. The second silencer is used to reduce the flow area of ​​the second noise reduction hole. By arranging the second noise reduction chamber to connect to the connecting port 310 via the second noise reduction hole, when airflow flows through the connecting port 310, sound waves in the airflow can enter the second noise reduction chamber through the second noise reduction hole, thereby facilitating the use of the second noise reduction hole and the second noise reduction chamber to absorb noise of a specific frequency, thereby achieving the purpose of noise reduction.

[0149] At the same time, by arranging a second silencer in the second noise reduction hole and arranging the second silencer to have a gap with the hole wall of the second noise reduction hole, the second silencer can be used to reduce the flow area of ​​the second noise reduction hole. In this way, while the second noise reduction hole can be connected to the second noise reduction cavity and the connecting port 310, it can also prevent sound waves from passing through the second noise reduction hole into the second noise reduction cavity to produce whistling sounds, thereby realizing the use of the second silencer to eliminate the whistling sounds, and further reducing the noise generated by the fan assembly 100 during operation, thereby improving the noise reduction effect of the second noise reduction hole and the second noise reduction cavity.

[0150] The matching relationship between the second silencer and the second noise reduction hole and the specific structure of the second silencer can be found in the first silencer 150 and will not be described in detail here.

[0151] The duct air conditioner 1000 of the present application will be described in detail below with reference to the accompanying drawings.

[0152] 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 invention includes: a fan assembly 100 , a housing 200 , a partition 300 and a heat exchanger 400 .

[0153] Combine Figure 1 、 Figure 2 and Figure 3 As shown, the partition 300 is disposed in the housing 200 , and the partition 300 divides the inner cavity of the housing 200 into a heat exchange cavity 210 and a fan cavity 220 . The heat exchanger 400 is disposed in the heat exchange cavity 210 , and the fan assembly 100 is disposed in the fan cavity 220 .

[0154] Combine Figure 3 、 Figure 10 and Figure 12 As shown, the fan assembly 100 includes a volute 110 and a wind wheel 140 . The volute 110 includes a shell body 114 and a noise reduction member 115 . The shell body 114 defines an air duct 111 . The wind wheel 140 is rotatably disposed in the air duct 111 to drive the air flow in the air duct 111 .

[0155] Combine 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 separating rib 1152. The noise reduction plate 1151 is arranged on the outside of the shell body 114 and is arranged 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 buckle 131 is arranged on the noise reduction component 115, and the slot 132 is arranged on the shell body 114. A guide surface 133 is provided on the buckle 131 and the structure forming the slot 132. The guide surface 133 is used to guide the buckle 131 to insert into the slot 132.

[0156] Combine 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, and the separating rib 1152 is located between the noise reduction plate 1151 and the shell body 114. There are multiple separating ribs 1152, and each separating rib 1152 includes at least one first convex rib 1153 and at least one second convex rib 1154. The first convex rib 1153 and the second convex rib 1154 are arranged at an angle. The noise reduction plate 1151 and the separating rib 1152 are integrally formed, and the shell body 114 and the separating rib 1152 are abutted and fitted to form multiple first noise reduction cavities 112 between the noise reduction plate 1151 and the shell body 114. A plurality of first noise reduction holes 113 are provided on the shell body 114, and the multiple first noise reduction holes 113 correspond one-to-one to 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] Combine Figure 4 、 Figure 5 and Figure 6 As shown, a first silencer 150 is provided in the first noise reduction hole 113. The first silencer 150 is at least partially provided in the first noise reduction cavity 112, and the first silencer 150 is connected to the noise reduction plate 1151. The first silencer 150 is a silencer column, at least part of which is inserted into the first noise reduction hole 113. The outer peripheral wall of the silencer column is spaced apart from the peripheral wall of the first noise reduction hole 113. The first silencer 150 is used to reduce the flow area of ​​the first noise reduction hole 113.

[0158] Combine 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 arranged close to the air duct 111 and the second opening 1132 is arranged close to the first noise reduction cavity 112, and the side surface of the first silencer 150 close to 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 wind wheel 140, and the outer diameter of at least part of the silencer column in the first noise reduction hole 113 gradually decreases along the direction close to the air duct 111.

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

[0160] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0161] Figure 1 and Figure 2 Three fan assemblies 100 are shown for illustrative purposes, but after reading the above technical solution, ordinary technicians can obviously understand that the solution can be applied to the technical solution of one, two, four or more fan assemblies 100, which also falls within the scope of protection of the present invention.

[0162] The specific structures and working principles of the fan assembly 100 and other components of the duct air conditioner 1000 having the same according to the embodiment of the present invention, such as the wind wheel 140 and the heat exchanger 400, are well known to ordinary technicians in this field and will not be described in detail here.

[0163] Throughout this specification, references to terms such as "embodiment" and "example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these 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 any one or more embodiments or examples.

[0164] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A fan assembly, characterized in that: include: a volute, the volute defining an air duct and a first noise reduction chamber, the first noise reduction chamber and the air duct being in communication with each other through a first noise reduction hole; a wind wheel rotatably disposed in the air duct to drive the air flow in the air duct; A first muffler is provided in the first noise reduction hole, and a gap is provided between the first muffler and the hole wall of the first noise reduction hole. The first muffler is used to reduce the flow area of ​​the first noise reduction hole.

2. The fan 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 arranged close to the air duct and the second opening is arranged close to the first noise reduction cavity, and the side surface of the first silencer close to the air duct is located on the side of the plane or curved surface where the first opening is located away from the wind wheel.

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

4. The fan assembly according to claim 3, characterized in that: The outer diameter of at least a portion of the muffler column located in the first noise reduction hole gradually decreases in a direction approaching 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 in a direction approaching the air duct.

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

6. The fan assembly according to claim 5, characterized in that: There are plural first noise reduction cavities and plural first noise reduction holes, and the plural first noise reduction holes correspond one-to-one to the plural first noise reduction cavities; And / or, there are multiple first noise reduction holes, and each of the first noise reduction holes is provided with the first silencer.

7. The fan assembly according to claim 5, characterized in that: The shell body includes a mounting wall, the noise reduction member 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 provided on the inner side of the noise reduction member and the mounting wall.

8. The fan assembly according to claim 7, characterized in that: The first sound-reducing member is at least partially disposed in the first noise-reduction cavity and is connected to the outer side of the noise-reducing member and the mounting wall.

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

10. The fan assembly according to claim 7, characterized in that: The noise reduction component includes: a noise reduction plate, the noise reduction plate being arranged opposite to the shell body; A separation rib is located between the noise reduction plate and the shell body, so that a plurality of first noise reduction cavities are formed between the noise reduction plate and the shell body, and each of the first noise reduction cavities is connected to the air duct through at least one first noise reduction hole.

11. The fan assembly according to claim 10, characterized in that: There are multiple dividing ribs, and the multiple dividing ribs are arranged at intervals; Alternatively, the number of the separating ribs is plural, and includes at least one first convex rib and at least one second convex rib, and the first convex rib and the second convex rib are arranged at an angle.

12. The fan assembly according to claim 10, characterized in that One of the noise reduction plate and the shell body is integrally formed with the separation rib, and the other is abutted against the separation rib.

13. The fan assembly according to any one of claims 5 to 12, characterized in that: The noise reduction member is disposed on the outer side of the shell body and defines the first noise reduction cavity between the noise reduction member and the shell body, and the first noise reduction hole is disposed in the shell body; Part of the first silencer is disposed in the first noise reduction cavity and connected to the noise reduction member, and the other part is disposed in the first noise reduction hole.

14. The fan assembly according to claim 13, characterized in that The opposite ends of the noise reduction component are detachably connected to the shell body through connecting structures.

15. The fan 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 the buckle and the slot is provided on the shell body, and the other is provided on the noise reduction component.

16. The fan 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 duct type air conditioner, characterized in that: include: shell; a separator, the separator being arranged in the shell to separate the inner cavity of the shell into a heat exchange cavity and a fan cavity; a heat exchanger, the heat exchanger being disposed in the heat exchange cavity; A fan assembly, wherein the fan assembly is the fan assembly according to any one of claims 1-16, and the fan assembly is arranged in the fan cavity.

18. The duct type air conditioner according to claim 17, characterized in that: The partition defines a communication port, and the communication port is connected between the heat exchange cavity and the outlet of the air duct; In which, the partition defines a second noise reduction chamber, the second noise reduction chamber and the connecting port are connected through a second noise reduction hole, a second silencer is provided in the second noise reduction hole, and there is a gap between the second silencer and the hole wall of the second noise reduction hole, and the second silencer is used to reduce the flow area of ​​the second noise reduction hole.

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