Air pipe type air conditioner

Abstract

The air pipe type air conditioner comprises a shell, a partition piece, a heat exchanger, a fan assembly and a noise reduction structure, the partition piece is arranged in the shell so as to divide an inner cavity of the shell into a heat exchange cavity and a fan cavity which are arranged in the transverse direction, a mounting opening is formed in the partition piece and communicated with the heat exchange cavity and the fan cavity, the heat exchanger is arranged in the heat exchange cavity, and the fan assembly is arranged in the fan assembly. The fan assembly is arranged in the fan cavity, the fan assembly is used for driving airflow in the fan cavity to flow towards the heat exchange cavity, the noise reduction structure is arranged at the mounting opening and comprises a first noise reduction cavity and a first noise reduction hole, and the first noise reduction hole is formed towards the fan cavity and communicates with the first noise reduction cavity and the fan cavity. According to the air pipe type air conditioner, noise generated when the air pipe type air conditioner works can be reduced on the premise that the size of the whole air conditioner is not increased, and the air pipe type air conditioner 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 an air duct type air conditioner. Background Art

[0002] The impeller in a ducted air conditioner is generally a centrifugal impeller. Compared with a cross-flow impeller, a centrifugal impeller has certain disadvantages in terms of noise, especially in a sleeping environment such as a bedroom, where 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 fan, sound-absorbing cotton is usually used for noise reduction. However, the sound-absorbing cotton not only increases the overall size of the duct air conditioner, but also fails to eliminate low-frequency noise, resulting in the duct air conditioner 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 ducted air conditioner that can reduce operating noise without increasing the size of the entire unit, thereby solving the technical problem of high operating noise in the prior art ducted air conditioners.

[0005] According to an embodiment of the utility model, the duct-type air conditioner includes: an outer shell; a partition, the partition is arranged in the outer shell to divide the inner cavity of the outer shell into a heat exchange cavity and a fan cavity arranged in the transverse direction, and the partition is provided with a mounting port, and the mounting port connects the heat exchange cavity and the fan cavity; a heat exchanger, the heat exchanger is arranged in the heat exchange cavity; a fan assembly, the fan assembly is arranged in the fan cavity, and the fan assembly is used to drive the airflow in the fan cavity toward the heat exchange cavity; a noise reduction structure, the noise reduction structure is arranged at the mounting port and includes a first noise reduction cavity and a first noise reduction hole, the first noise reduction hole is arranged toward the fan cavity and connects the first noise reduction cavity and the fan cavity.

[0006] According to the duct type air conditioner of the embodiment of the present invention, a mounting opening is provided on the partition, and the noise reduction structure is arranged in the mounting opening to fix the noise reduction structure, which can reduce the difficulty of assembling the noise reduction structure. At the same time, the noise reduction structure is arranged to include a first noise reduction cavity and a first noise reduction hole, and the first noise reduction hole is arranged to be arranged toward the fan cavity and connected to the first noise reduction cavity and the fan cavity. This can reduce the noise generated by the duct type air conditioner during operation without increasing the size of the entire machine, so that the duct type air conditioner has the advantages of small space occupation and low working noise, thereby improving the user experience.

[0007] In some embodiments, the noise reduction structure is detachably engaged with the partition.

[0008] In some embodiments, at least one of the mounting openings is a first mounting opening and the hole wall of the first mounting opening is closed on all sides, and at least one of the noise reduction structures is a first noise reduction structure, which is suitable for being installed in the first mounting opening along the transverse direction.

[0009] In some embodiments, one of the first noise reduction structure and the partition is provided with a first limiting portion and a second limiting portion arranged in the transverse direction, and the other of the first noise reduction structure and the partition is provided with a limiting matching portion, and the limiting matching portion is provided between the first limiting portion and the second limiting portion in the transverse direction to limit the movement of the first noise reduction structure in the transverse direction.

[0010] In some embodiments, the first limiting portion is closer to the fan cavity than the second limiting portion, the first limiting portion includes a first limiting protrusion extending along a first direction, the second limiting portion includes at least one second limiting protrusion extending along the first direction, the first limiting protrusion and the second limiting protrusion are arranged opposite to each other in the transverse direction, and the first direction is longitudinal or vertical.

[0011] In some embodiments, the limiting fitting portion includes a first fitting protrusion and at least one second fitting protrusion, the first fitting protrusion and the second fitting protrusion are arranged in the transverse direction and the first direction, and the first fitting protrusion is closer to the fan cavity than the second fitting protrusion; wherein, the first limiting protrusion stops at the side of the first fitting protrusion facing the fan cavity, the number of the second limiting protrusions of each second limiting portion is equal to the number of the second limiting protrusions of each limiting fitting portion and the positions correspond one to one, and the second limiting protrusion stops at the side of the corresponding second fitting protrusion facing the heat exchange cavity.

[0012] In some embodiments, the first limiting portion is an annular protrusion extending along the circumference of the first noise reduction structure; and / or, the number of the second limiting portions is at least two, and at least two of the second limiting portions are respectively arranged on opposite sides of the first noise reduction structure in the second direction, the number of the limiting matching portions is equal to the number of the second limiting portions and the positions correspond one to one, and one of the first direction and the second direction is vertical and the other is longitudinal.

[0013] In some embodiments, the first limiting portion and the second limiting portion are arranged on the hole wall of the first mounting port and the limiting matching portion is arranged on the first noise reduction structure; wherein, the second limiting protrusion and / or the limiting matching portion has a first guide surface, and the first guide surface extends gradually from the heat exchange chamber to the fan chamber in the transverse direction toward the center of the first mounting port, for guiding the limiting matching portion to be inserted between the first limiting protrusion and the second limiting protrusion.

[0014] In some embodiments, one of the first noise reduction structure and the partition is provided with a guide protrusion, and the other is provided with a guide groove extending along the transverse direction, and the guide protrusion is slidably engaged with the guide groove.

[0015] In some embodiments, the first noise reduction structure and the other of the partition are provided with at least two third mating protrusions spaced apart in the second direction, the guide groove is formed between two adjacent third mating protrusions, and the second direction is vertical or longitudinal.

[0016] In some embodiments, the third mating protrusion is provided on the first noise reduction structure, the first limiting portion is provided on the partition and is formed as an annular protrusion extending along the circumference of the first noise reduction structure, and the first limiting portion stops on the side of the third mating protrusion facing the fan cavity.

[0017] In some embodiments, the number of the guide protrusions is at least two, and the at least two guide protrusions are respectively arranged on opposite sides of the first noise reduction structure in a first direction, one of the first direction and the second direction is vertical and the other is longitudinal.

[0018] In some embodiments, at least one of the mounting ports is a second mounting port and the second mounting port has an opening on one side in the vertical direction, and at least one of the noise reduction structures is a second noise reduction structure, which is suitable for being installed from the opening to the second mounting port along the vertical direction.

[0019] In some embodiments, one of the partition and the second noise reduction structure is provided with a snap-fit ​​portion and the other is provided with a slot, and the snap-fit ​​portion is snap-fitted with the slot to limit the second noise reduction structure from moving in the vertical direction.

[0020] In some embodiments, the engaging portion and / or the structure forming the engaging slot has a second guide surface for guiding the engaging portion to engage in the engaging slot.

[0021] In some embodiments, one of the partition and the second noise reduction structure is provided with an inserting protrusion and the other is provided with a slot extending along the vertical direction, and the inserting protrusion is plug-fitted with the slot.

[0022] In some embodiments, the plug-in protrusion is located in the second noise reduction structure, and the slot is located in the partition and is connected to the second mounting port; wherein, the plug-in protrusion has a third guide surface for guiding the plug-in protrusion to be inserted into the slot; and / or, the structure forming the slot has a fourth guide surface near the opening for guiding the second noise reduction structure to be inserted from the opening into the second mounting port.

[0023] In some embodiments, the noise reduction structure includes a first noise reduction component and a second noise reduction component, the first noise reduction component is arranged on the side of the second noise reduction component facing the fan cavity, the first noise reduction cavity is formed between the first noise reduction component and the second noise reduction component, and the first noise reduction hole is arranged in the first noise reduction component.

[0024] In some embodiments, the noise reduction structure further includes a separation rib, and the separation rib is provided between the first noise reduction component and the second noise reduction component to form a plurality of the first noise reduction cavities between the first noise reduction component and the second noise reduction component.

[0025] In some embodiments, the fan assembly includes: a volute, which defines an air duct, the inlet of the air duct is connected to the fan cavity, and the outlet of the air duct is connected to the heat exchange cavity; and a wind wheel, which is rotatably disposed in the air duct to drive the air flow in the air duct.

[0026] In some embodiments, the volute is connected to the partition, and the noise reduction structure avoids the volute.

[0027] In some embodiments, the volute includes a first shell and a second shell arranged opposite to each other in the vertical direction, the air duct is defined between the first shell and the second shell, and the first shell has a volute tongue near the partition; at least a portion of the noise reduction structure is located on opposite sides of the volute in the longitudinal direction; and / or, at least a portion of the noise reduction structure is arranged near the volute tongue and is located on the side of the first shell facing away from the second shell.

[0028] In some embodiments, the partition defines a connecting port, which connects between the heat exchange chamber and the outlet of the air duct; wherein, at least a portion of the wall of the partition defining the connecting port has a second noise reduction chamber and a second noise reduction hole, and the second noise reduction hole connects the second noise reduction chamber and the connecting port.

[0029] 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

[0030] 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:

[0031] Figure 1 Schematic diagram of a duct-type air conditioner according to some embodiments of the present invention.

[0032] Figure 2 This is a front view of a duct-type air conditioner according to some embodiments of the present invention.

[0033] Figure 3 for Figure 2 Sectional view along line AA.

[0034] Figure 4 for Figure 1 Schematic diagram of the ducted air conditioner with some structures omitted.

[0035] Figure 5 for Figure 4 A schematic diagram of the ducted air conditioner from another angle after some of the structures are omitted.

[0036] Figure 6 for Figure 5 The main view of the ducted air conditioner.

[0037] Figure 7 for Figure 6 Cross-sectional view along line BB.

[0038] Figure 8 for Figure 5 Schematic diagram of the duct air conditioner from another angle.

[0039] Figure 9 for Figure 8 Exploded diagram of the ducted air conditioner.

[0040] Figure 10 for Figure 9 Magnified view of region I in the middle.

[0041] Figure 11 for Figure 10 Magnified view of region II.

[0042] Figure 12 for Figure 9 Magnified view of region III.

[0043] Figure 13 Schematic diagram of a first noise reduction structure in some embodiments of the present invention.

[0044] Figure 14 for Figure 13 Magnified view of middle region IV.

[0045] Figure 15 Schematic diagram of a second noise reduction structure in some embodiments of the present invention.

[0046] Figure 16 for Figure 15 Magnified view of region V in the middle.

[0047] Figure 17 This is a schematic diagram of the principle of the Helmholtz resonator.

[0048] Reference numerals:

[0049] 1000, duct air conditioner;

[0050] 200, housing; 210, heat exchange chamber; 220, fan chamber;

[0051] 300, separator; 310, communication port; 320, mounting port; 321, first mounting port; 322, second mounting port; 330, first position-limiting portion; 331, first position-limiting protrusion; 340, second position-limiting portion; 341, second position-limiting protrusion; 350, guide protrusion; 360, slot; 370, slot; 380, fourth guide surface; 390, fourth mating protrusion;

[0052] 400, heat exchanger;

[0053] 100, fan assembly; 110, volute; 111, air duct; 1111, outlet; 1112, inlet; 116, first housing; 118, volute tongue; 117, second housing; 140, wind wheel;

[0054] 500, noise reduction structure; 113, first noise reduction hole; 510, first noise reduction structure; 511, position-limiting mating portion; 5111, first mating protrusion; 5112, second mating protrusion; 512, guide groove; 513, third mating protrusion; 520, second noise reduction structure; 521, snap-fit ​​portion; 522, plug-in protrusion; 5221, third guide surface; 530, first noise reduction member; 540, second noise reduction member; 550, snap-fit ​​assembly; 551, first protrusion; 5511, fifth guide surface; 552, second protrusion; 5521, bayonet;

[0055] 600. First guide surface; 700. Second guide surface. DETAILED DESCRIPTION

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] To solve the above problems, the present application proposes a duct-type air conditioner 1000 .

[0063] The following describes the duct type air conditioner 1000 according to an embodiment of the present invention with reference to the accompanying drawings.

[0064] Combine Figures 1-4 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 , a fan assembly 100 and a noise reduction structure 500 .

[0065] Among them, combined Figure 2 、 Figure 3 and Figure 4 As shown, the separator 300 is provided in the housing 200 to separate the inner cavity of the housing 200 into a heat exchange cavity 210 and a fan cavity 220 arranged in the transverse direction. The separator 300 is provided with a mounting port 320 (the specific structure of the mounting port 320 can be seen in FIG. Figure 9 ), the installation port 320 communicates with the heat exchange chamber 210 and the fan chamber 220.

[0066] like Figure 3 As shown, the heat exchanger 400 is disposed in the heat exchange chamber 210. The heat exchanger 400 is used to exchange heat with the air in the heat exchange chamber 210, and the heat-exchanged air is blown to a designated area to adjust the air temperature in the designated area.

[0067] like Figure 3 As shown, the fan assembly 100 is disposed in the fan cavity 220 , and the fan assembly 100 is used to drive the airflow in the fan cavity 220 to flow toward the heat exchange cavity 210 .

[0068] In a specific example, driven by the fan assembly 100, the air outside the duct air conditioner 1000 flows through the fan cavity 220 and the heat exchange cavity 210 in sequence. When the air flows through the heat exchange cavity 210, the air exchanges heat with the heat exchanger 400 in the heat exchange cavity 210. The air after heat exchange is blown into the room to facilitate adjusting the indoor air temperature.

[0069] Combine Figure 3-Figure 9 As shown, the noise reduction structure 500 is disposed at the mounting opening 320. The noise reduction structure 500 includes a first noise reduction cavity and a first noise reduction hole 113. The first noise reduction hole 113 is disposed toward the fan cavity 220 and connects the first noise reduction cavity and the fan cavity 220. This achieves coordinated communication between the first noise reduction cavity and the fan cavity 220. Thus, when air flows within the fan cavity 220, noise within the fan cavity 220 can enter the first noise reduction cavity through the first noise reduction hole 113. This facilitates the use of the first noise reduction hole 113 and the first noise reduction cavity to absorb noise of a specific frequency, thereby achieving the purpose of noise reduction.

[0070] In a specific example, the noise reduction structure 500 defines a super-structure. During the flow of air, the sound waves in the fan cavity 220 enter the first noise reduction cavity through the first noise reduction hole 113. When the sound waves enter the first noise reduction cavity, they collide with the cavity wall of the first noise reduction cavity and produce reflections. These reflected sound waves interfere with the incident sound waves to form a complex sound field distribution. At certain frequencies, the first noise reduction cavity will produce a resonance effect, causing the sound waves to be attenuated in the first noise reduction cavity, thereby achieving the effect of noise reduction.

[0071] In some embodiments, the first noise reduction hole 113 is arranged between the first noise reduction cavity and the fan cavity 220 and respectively connects the first noise reduction cavity and the fan cavity 220, so as to facilitate the use of the first noise reduction hole 113 to achieve the coordinated connection between the first noise reduction cavity and the fan cavity 220, thereby reducing the difficulty of connecting the first noise reduction cavity and the fan cavity 220.

[0072] It is worth noting that the present application directly uses the noise reduction structure 500 to define the first noise reduction cavity and the first noise reduction hole 113, which not only reduces the difficulty of forming the first noise reduction cavity and the first noise reduction hole 113, but also helps to simplify the structure of the fan assembly 100 and reduce the manufacturing difficulty and manufacturing cost of the fan assembly 100.

[0073] At the same time, the present application sets an installation port 320 on the partition 300, and sets the noise reduction structure 500 in the installation port 320, so as to realize that at least part of the structure of the noise reduction structure 500 is set in the partition 300. Not only can the partition 300 be used to support the noise reduction structure 500, but it can also avoid the noise reduction structure 500 occupying space in other positions in the outer shell 200 to a certain extent, thereby avoiding increasing the size of the duct air conditioner 1000, thereby achieving the reduction of the noise generated by the duct air conditioner 1000 during operation without increasing the size of the entire duct air conditioner 1000, so that the duct air conditioner 1000 has the advantages of small space occupation and small working noise.

[0074] In addition, by separately arranging the noise reduction structure 500 at the installation opening 320 , the noise reduction structure 500 and the partition 300 can form two independent parts. Therefore, the noise reduction structure 500 can be molded separately and then assembled with the partition 300, thereby improving manufacturability.

[0075] It can be seen from the above structure that the duct air conditioner 1000 of the embodiment of the utility model, by setting the installation port 320 on the partition 300, sets the noise reduction structure 500 at the installation port 320, so as to realize the use of the partition 300 to support the noise reduction structure 500, improve the position stability of the noise reduction structure 500, and ensure the working performance of the noise reduction structure 500 to a certain extent. At the same time, due to the setting of the installation port 320, at least part of the noise reduction structure 500 can be set in the partition 300, to a certain extent, avoid the noise reduction structure 500 occupying space in other positions in the outer shell 200, thereby avoiding increasing the size of the duct air conditioner 1000, so that the duct air conditioner 1000 has the advantage of occupying a small space, and the above setting can also make the noise reduction structure 500 and the partition 300 form two independent parts, so that the noise reduction structure 500 can be molded separately, thereby improving the manufacturability of the noise reduction structure 500 and reducing the manufacturing difficulty.

[0076] At the same time, the noise reduction structure 500 is configured to include a first noise reduction cavity and a first noise reduction hole 113, and the first noise reduction hole 113 is arranged toward the fan cavity 220 and connects the first noise reduction cavity and the fan cavity 220, so as to realize the coordinated connection between the first noise reduction cavity and the fan cavity 220, and reduce the difficulty of the connection between the first noise reduction cavity and the fan cavity 220. In this way, during the flow of air, the sound waves in the fan cavity 220 can enter the first noise reduction cavity through the first noise reduction hole 113, so as to utilize the first noise reduction hole 113 and the first noise reduction cavity to cooperate with each other to absorb the noise generated during 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.

[0077] It can be understood that compared with the prior art, the present application sets an installation port 320 on the partition 300, sets the noise reduction structure 500 at the installation port 320, and sets the noise reduction structure 500 to include a first noise reduction cavity and a first noise reduction hole 113. Not only can the first noise reduction cavity and the first noise reduction hole 113 be used to cooperate to reduce noise during the flow of airflow, but the molding difficulty of the first noise reduction cavity and the first noise reduction hole 113 can also be reduced, as well as the space occupied by the noise reduction structure 500 can be reduced, so as to achieve 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 occupation of space and low operating noise.

[0078] In some embodiments, combined Figure 1 、 Figure 2 and Figure 4As 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.

[0079] In some embodiments, the noise reduction structure 500 also includes a noise reduction net (not shown in the figure), which is fixed on the wall where the first noise reduction hole 113 is located. The mesh of the noise reduction net connects the first noise reduction hole 113 and the fan cavity 220, and the aperture of the mesh is smaller than the aperture of the first noise reduction hole 113.

[0080] It should be noted that since the first noise reduction hole 113 is arranged toward the fan cavity 220 , the wind speed at the location of the first noise reduction hole 113 is relatively high. When the first noise reduction hole 113 is directly connected to the fan cavity 220 , a whistling sound will be generated when high-speed wind blows through the first noise reduction hole 113 , affecting the noise reduction effect of the noise reduction structure 500 .

[0081] Based on this, the present application sets a noise reduction net on the wall where the first noise reduction hole 113 is located, and sets the aperture of the mesh of the noise reduction net to be smaller than the aperture of the first noise reduction hole 113. While achieving the connection between the first noise reduction hole 113 and the fan cavity 220, the noise reduction net can also be used to eliminate the whistling sound, so as to enhance the noise reduction effect of the noise reduction structure 500, thereby reducing the noise generated by the duct air conditioner 1000 during operation.

[0082] Of course, in some other embodiments, the whistling sound can also be reduced by reducing the aperture of the first noise reduction hole 113, but 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. Therefore, the present application sets a noise reduction net on the wall where the first noise reduction hole 113 is located, which can adaptively increase the size of the first noise reduction hole 113, thereby reducing the difficulty of forming the first noise reduction hole 113.

[0083] Therefore, the above can also be understood as that by providing the noise reduction net, the difficulty of forming the first noise reduction hole 113 is reduced while the whistling sound can also be reduced.

[0084] 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 noise reduction net is provided.

[0085] In some embodiments, the noise reduction net is integrally formed with the wall where the first noise reduction hole 113 is located. For example, the noise reduction net is covered on the wall where the first noise reduction hole 113 is located using an in-mold injection molding process to reduce the difficulty of fixing the noise reduction net to the wall where the first noise reduction hole 113 is located and increase the fixing strength, thereby improving the positional stability of the noise reduction net and facilitating the noise reduction effect of the noise reduction net.

[0086] In other embodiments, the noise reduction net may also be connected to the wall where the first noise reduction hole 113 is located by welding, bonding, or clamping, etc., which is not specifically limited here.

[0087] In some embodiments, the noise reduction net is made of materials such as nylon and non-woven fabric.

[0088] In some embodiments, the flow area of ​​the first noise reduction hole 113 is smaller than the flow area of ​​the first noise reduction cavity. This allows the first noise reduction hole 113 and the first noise reduction cavity to cooperate to form a Helmholtz resonator. In this way, when air flows from the first noise reduction hole 113 into the first noise reduction cavity, since the flow area of ​​the first noise reduction cavity is larger than the flow area of ​​the first noise reduction hole 113, the flow velocity of the air in the first noise reduction cavity is much smaller than the flow velocity of the local airflow in the center of the first noise reduction cavity, thereby forming a more intense shear flow in the first noise reduction cavity, accompanied by unstable disturbance waves. At the same time, if the air column in the first noise reduction hole 113 is disturbed, The air in the first noise reduction cavity moves, and the gas in the first noise reduction cavity 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 cavity. 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.

[0089] 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 can be adjusted according to the frequency of the noise to be eliminated.

[0090] That is to say, the combination of the first noise reduction hole 113 and the first noise reduction cavity can absorb noise of a specific frequency. In this way, the first noise reduction hole 113 and the first noise reduction cavity 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.

[0091] Among them, the noise frequency to be eliminated S is the cross-sectional area of ​​the first noise reduction hole 113, S=πD 2 / 4; V is the volume of the first noise reduction cavity; L is the length of the first noise reduction hole 113 (for details, see Figure 17 ).

[0092] Based on this, in a specific example, the first noise reduction cavity can be used to absorb low-frequency noise by adjusting S, V or L.

[0093] In some embodiments, the number of the first noise reduction cavity and the first noise reduction hole 113 are multiple, and the multiple first noise reduction holes 113 correspond to the multiple first noise reduction cavities one by one (see the schematic diagram of the multiple first noise reduction holes 113 for details). Figure 6 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 and multiple first noise reduction holes 113. The multiple first noise reduction cavities and multiple first noise reduction holes 113 can cooperate to form a combination of multiple Helmholtz resonators to absorb noise of specific frequencies and improve the noise reduction effect.

[0094] In some embodiments, the noise reduction structure 500 is detachably mated with the separator 300. This means that the noise reduction structure 500 is disposed at the mounting opening 320 and is detachably mated with the separator 300. This, on the one hand, reduces the difficulty of mating the noise reduction structure 500 and the separator 300, improves assembly efficiency, and facilitates maintenance and replacement of the noise reduction structure 500. Furthermore, the noise reduction structure 500 and the separator 300 can be formed as two independent parts. This allows them to be separately processed and formed during production, reducing the difficulty of forming the noise reduction structure 500 and the separator 300. This helps ensure the quality of the noise reduction structure 500 and the separator 300, and improves their performance.

[0095] In some embodiments, combined Figure 8 and Figure 9 As shown, at least one mounting opening 320 is a first mounting opening 321, and the hole wall of the first mounting opening 321 is closed on all sides. At least one noise reduction structure 500 is a first noise reduction structure 510, and the first noise reduction structure 510 is suitable for being installed in the first mounting opening 321 along the horizontal direction. In this way, the noise reduction structure 500 is installed in the mounting opening 320.

[0096] In some embodiments, combined Figure 9 、 Figure 10 and Figure 13 As shown, one of the first noise reduction structure 510 and the partition 300 is provided with a first stopper 330 and a second stopper 340 arranged in a transverse direction, while the other of the first noise reduction structure 510 and the partition 300 is provided with a stopper mating portion 511. The stopper mating portion 511 is disposed transversely between the first stopper 330 and the second stopper 340 to restrict the transverse movement of the first noise reduction structure 510. This allows the first noise reduction structure 510 to be stably positioned on the partition 300, improves the positional stability of the first noise reduction structure 510, and ensures the working performance of the first noise reduction structure 510 to a certain extent.

[0097] At the same time, the first noise reduction structure 510 and the partition 300 are fixedly matched by using the limiting fitting part 511, the first limiting part 330 and the second limiting part 340. This not only reduces the difficulty of assembling the first noise reduction structure 510 and the partition 300, but also makes the installation of the first noise reduction structure 510 and the partition 300 convenient and improves the assembly efficiency. At the same time, it also allows the first noise reduction structure 510 and the partition 300 to form a detachable fit.

[0098] In a specific example, combining Figure 9 、 Figure 10 and Figure 13 As shown, the first limiting portion 330 and the second limiting portion 340 are provided on the partition 300 , and the limiting matching portion 511 is provided on the first noise reduction structure 510 .

[0099] Of course, in some other embodiments, the first limiting portion 330 and the second limiting portion 340 may also be provided on the first noise reduction structure 510 , and the limiting matching portion 511 is provided on the partition 300 (not shown in this example figure).

[0100] In some embodiments, combined Figure 9 and Figure 10 As shown, the first limiting portion 330 is closer to the fan cavity 220 than the second limiting portion 340 (the specific structure of the fan cavity 220 can be seen in Figure 3 ), the first limiting portion 330 includes a first limiting protrusion 331 extending along a first direction, and the second limiting portion 340 includes at least one second limiting protrusion 341 extending along the first direction. The first limiting protrusion 331 and the second limiting protrusion 341 are arranged opposite each other in the transverse direction, and the first direction is the longitudinal or vertical direction. In other words, the extending direction of the first limiting protrusion 331 and the second limiting protrusion 341 is different from the arrangement direction of the first limiting protrusion 331 and the second limiting protrusion 341. When the limiting mating portion 511 is disposed between the first limiting portion 330 and the second limiting portion 340, the first limiting portion 330 and the second limiting portion 340 cooperate to effectively restrict the transverse movement of the first noise reduction structure 510, thereby achieving the purpose of fixing the first noise reduction structure 510.

[0101] In some embodiments, the first direction is vertical. That is, the first limiting portion 330 includes a first limiting protrusion 331 extending vertically, and the second limiting portion 340 includes at least one second limiting protrusion 341 extending vertically. Thus, when the limiting fitting portion 511 is disposed between the first limiting portion 330 and the second limiting portion 340, the contact areas between the first limiting portion 330 and the second limiting portion 340 and the limiting fitting portion 511 are increased, thereby increasing the limiting effects of the first limiting portion 330 and the second limiting portion 340 on the limiting fitting portion 511. This allows the first noise reduction structure 510 to be effectively restricted from lateral movement by the first limiting portion 330 and the second limiting portion 340 in cooperation with each other.

[0102] In some embodiments, as Figure 13 As shown, the position-limiting mating portion 511 includes a first mating protrusion 5111 and at least one second mating protrusion 5112. The first mating protrusion 5111 and the second mating protrusion 5112 are arranged in the transverse direction and in the first direction. The first mating protrusion 5111 is closer to the fan chamber 220 than the second mating protrusion 5112. The first position-limiting protrusion 331 abuts on the side of the first mating protrusion 5111 facing the fan chamber 220. The number of second position-limiting protrusions 341 of each second position-limiting portion 340 is equal to the number of second mating protrusions 5112 of each position-limiting mating portion 511, and the positions of the second position-limiting protrusions 341 are corresponding one-to-one. The second position-limiting protrusions 341 abut on the side of the corresponding second mating protrusion 5112 facing the heat exchange chamber 210. This achieves the position-limiting mating portion 511 being abutted between the first position-limiting portion 330 and the second position-limiting portion 340.

[0103] In some embodiments, as Figure 10 and Figure 13 As shown, the second limiting portion 340 includes a plurality of second limiting protrusions 341 extending vertically, and the limiting matching portion 511 includes a plurality of second matching protrusions 5112 extending vertically. The positions of the plurality of second limiting protrusions 341 and the plurality of second matching protrusions 5112 correspond one to one, so as to stop the second limiting protrusion 341 on the side of the corresponding second matching protrusion 5112 facing the heat exchange chamber 210, thereby stopping the limiting matching portion 5111 between the first limiting portion 330 and the second limiting portion 340.

[0104] It is worth noting that the present application sets the second limiting portion 340 to include multiple second limiting protrusions 341 and sets the limiting matching portion 511 to include multiple second matching protrusions 5112. On the one hand, the multiple second limiting protrusions 341 and the multiple second matching protrusions 5112 can be used to increase the limiting strength of the first noise reduction structure 510 and the partition 300, so that the first noise reduction structure 510 can be fixed on the partition 300. On the other hand, it is also convenient to adaptively reduce the vertical extension length of the second limiting protrusion 341 and the second matching protrusion 5112, so that the second limiting protrusion 341 and the second matching protrusion 5112 can be deformed under the action of external force, and then the limiting matching portion 511 can be effectively matched between the first limiting portion 330 and the second limiting portion 340 to limit the lateral movement of the first noise reduction structure 510 and improve the position stability of the first noise reduction structure 510.

[0105] In some embodiments, combined Figure 9 、 Figure 10 and Figure 13 As shown, the first stopper 330 is an annular protrusion extending along the circumference of the first noise reduction structure 510. This means that when the first noise reduction structure 510 is positioned within the first mounting opening 321, the first stopper 330 extends along the circumference of the first noise reduction structure 510 to increase the contact area between the first stopper 330 and the first noise reduction structure 510. This allows the first stopper 330 to effectively stop against the first noise reduction structure 510, thereby facilitating the stable positioning of the first noise reduction structure 510 within the first mounting opening 321.

[0106] In some embodiments, combined Figure 9 and Figure 10 As shown, the first limiting portion 330 is provided on the hole wall of the first mounting opening 321, extending along the circumference of the first mounting opening 321 and protruding toward the center direction of the first mounting opening 321, so as to realize the first limiting portion 330 being set as an annular protrusion extending along the circumference of the first noise reduction structure 510.

[0107] In some embodiments, there are at least two second limiting portions 340, each of which is positioned on opposite sides of the first noise reduction structure 510 in the second direction. The number of the limiting mating portions 511 is equal to the number of the second limiting portions 340, and the positions correspond one-to-one. One of the first and second directions is vertical, and the other is longitudinal. In other words, the arrangement direction of the at least two second limiting portions 340 is different from the extension direction of the second limiting protrusion 341. This facilitates the use of the second limiting portions 340 to limit the opposite sides of the first noise reduction structure 510, thereby improving the limiting effect of the second limiting portions 340 on the first noise reduction structure 510 and further improving the positional stability of the first noise reduction structure 510, so that the first noise reduction structure 510 can be stably positioned within the first mounting opening 321.

[0108] In a specific example, the first direction is vertical, the second direction is longitudinal, and at least two second limiting portions 340 are respectively arranged on opposite sides of the first noise reduction structure 510 in the longitudinal direction. The first noise reduction structure 510 is respectively provided with limiting matching portions 511 on opposite sides in the longitudinal direction. The number of limiting matching portions 511 is equal to the number of second limiting portions 340 and the positions correspond one to one, so as to utilize the limiting matching portions 511 and the second limiting portions 340 to limit the position of the first noise reduction structure 510 and improve the position stability of the first noise reduction structure 510.

[0109] In some embodiments, combined Figure 10 、 Figure 11 、 Figure 13 and Figure 14 As shown, the first limiting portion 330 and the second limiting portion 340 are arranged on the hole wall of the first mounting port 321 and the limiting matching portion 511 is arranged on the first noise reduction structure 510; wherein, the second limiting protrusion 341 and / or the limiting matching portion 511 has a first guide surface 600, and the first guide surface 600 extends laterally from the heat exchange chamber 210 to the fan chamber 220 gradually toward the center of the first mounting port 321, for guiding the limiting matching portion 511 to be inserted between the first limiting protrusion 331 and the second limiting protrusion 341. What is meant here is that the second limiting protrusion 341 has a first guide surface 600; or, the limiting fitting part 511 has a first guide surface 600; or, the second limiting protrusion 341 and the limiting fitting part 511 both have a first guide surface 600, and the first guide surface 600 is used to reduce the difficulty of matching the limiting fitting part 511 with the first limiting part 330 and the second limiting part 340, so that the limiting fitting part 511 can be effectively assembled in the first limiting part 330 and the second limiting part 340, thereby facilitating the matching connection between the first noise reduction structure 510 and the partition 300, and reducing the difficulty of connecting the first noise reduction structure 510 and the partition 300.

[0110] In some embodiments, combined Figure 10 、 Figure 11 、 Figure 13 and Figure 14 As shown, the first noise reduction structure 510 is installed in the first installation opening 321 through the first installation opening 321 toward the side opening of the heat exchange chamber 210. The second limiting protrusion 341 has a first guide surface 600 on the side facing the heat exchange chamber 210. The first matching protrusion 5111 and the second matching protrusion 5112 have a first guide surface 600 on the side facing the fan chamber 220. The first guide surface 600 guides the first matching protrusion 5111 and the second matching protrusion 5112 to be inserted between the first limiting protrusion 331 and the second limiting protrusion 341, respectively, to achieve the matching connection between the first noise reduction structure 510 and the partition 300.

[0111] In some embodiments, combined Figure 9 、 Figure 10 and Figure 13 As shown, one of the first noise reduction structure 510 and the partition 300 is provided with a guide protrusion 350, and the other is provided with a guide groove 512 extending in the transverse direction. The guide protrusion 350 slides in engagement with the guide groove 512. This allows for a sliding engagement between the first noise reduction structure 510 and the partition 300, reducing the difficulty of connecting the first noise reduction structure 510 and the partition 300.

[0112] At the same time, the sliding fit between the guide protrusion 350 and the guide groove 512 can also guide the first noise reduction structure 510 during the assembly process of the first noise reduction structure 510, so that the first noise reduction structure 510 can be accurately installed on the partition 300.

[0113] In some embodiments, combined Figure 9 、 Figure 10 and Figure 13 As shown, the guide protrusion 350 is provided on the partition 300 , and the guide groove 512 is provided on the first noise reduction structure 510 .

[0114] In other embodiments, the guide groove 512 is provided on the partition 300 , and the guide protrusion 350 is provided on the first noise reduction structure 510 (not shown in this example).

[0115] In some embodiments, combined Figure 9 、 Figure 10 and Figure 13 As shown, the first noise reduction structure 510 and the other of the separator 300 are provided with at least two third mating protrusions 513 spaced apart in the second direction, with a guide groove 512 formed between two adjacent third mating protrusions 513. The second direction is vertical or longitudinal. The use of two adjacent third mating protrusions 513 to form the guide groove 512 reduces the difficulty of forming the guide groove 512 and avoids directly grooved surfaces in the first noise reduction structure 510 or the separator 300, thereby preventing damage to the first noise reduction structure 510 or the separator 300 and extending the service life of the first noise reduction structure 510 or the separator 300.

[0116] In some embodiments, combined Figure 9 、 Figure 10 and Figure 13As shown, the third mating protrusion 513 is provided on the first noise reduction structure 510, and the first stopper 330 is provided on the partition 300 and is formed as an annular protrusion extending along the circumference of the first noise reduction structure 510. The first stopper 330 is stopped on the side of the third mating protrusion 513 facing the fan chamber 220. In other words, the third mating protrusion 513 not only defines the guide groove 512 but also abuts against the first stopper 330 on the partition 300, further increasing the contact area between the first noise reduction structure 510 and the partition 300, thereby stabilizing the relative position of the first noise reduction structure 510 and the partition 300.

[0117] In some embodiments, combined Figure 9 、 Figure 10 and Figure 13 As shown, there are at least two guide protrusions 350, each disposed on opposite sides of the first noise reduction structure 510 in a first direction, with one of the first and second directions being vertical and the other longitudinal. In other words, the arrangement direction of the at least two guide protrusions 350 differs from the arrangement direction of the two adjacent third mating protrusions 513. This facilitates the use of the guide protrusions 350 to guide and position the opposite sides of the first noise reduction structure 510, enabling accurate installation of the first noise reduction structure 510 on the partition 300 and reducing the difficulty of connecting the first noise reduction structure 510 to the partition 300.

[0118] In a specific example, the first direction is vertical, the second direction is longitudinal, at least two guide protrusions 350 are respectively arranged on the opposite sides of the first noise reduction structure 510 in the vertical direction, and the first noise reduction structure 510 is respectively provided with guide grooves 512 on the opposite sides of the vertical direction that cooperate with the guide protrusions 350. The number of guide grooves 512 is equal to the number of guide protrusions 350 and the positions correspond one to one, so that the guide grooves 512 and the guide protrusions 350 can be used to limit the sliding direction of the first noise reduction structure 510, thereby reducing the difficulty of assembling the first noise reduction structure 510.

[0119] At the same time, by arranging at least two guide protrusions 350 to be respectively arranged on opposite sides of the first noise reduction structure 510 in the first direction, the setting position of the guide protrusion 350 on the first noise reduction structure 510 and the setting position of the limiting matching part 511 on the first noise reduction structure 510 can also be different, so that the first noise reduction structure 510 can be provided with the guide protrusion 350 and the limiting matching part 511 at the same time. In this way, during the assembly process of the first noise reduction structure 510, the guide protrusion 350 and the guide groove 512 can be first used to guide the first noise reduction structure 510 so that the first noise reduction structure 510 can be accurately set in the first installation opening 321. After the first noise reduction structure 510 is installed in place, the limiting matching part 511, the first limiting part 330 and the second limiting part 340 are used to cooperate to limit the first noise reduction structure 510 so that the first noise reduction structure 510 can be fixed in the first installation opening 321, thereby improving the position stability of the first noise reduction structure 510.

[0120] In some embodiments, combined Figure 8 and Figure 9 As shown, at least one mounting opening 320 is a second mounting opening 322, and the second mounting opening 322 has an opening on one side in the vertical direction. At least one noise reduction structure 500 is a second noise reduction structure 520, and the second noise reduction structure 520 is suitable for being installed vertically from the opening into the second mounting opening 322. This allows the noise reduction structure 500 to be installed in the mounting opening 320.

[0121] At the same time, by opening an opening on one side of the second mounting opening 322 vertically, the second noise reduction structure 520 is installed vertically from the opening into the second mounting opening 322, which can also reduce the difficulty of assembling the second noise reduction structure 520 and the second mounting opening 322, thereby reducing the difficulty of assembling the noise reduction structure 500 and the mounting opening 320, so that the noise reduction structure 500 can be effectively arranged on the partition 300.

[0122] In some embodiments, combined Figure 9 、 Figure 12 、 Figure 15 and Figure 16 As shown, one of the partition 300 and the second noise reduction structure 520 is provided with a snap-fit ​​portion 521, and the other is provided with a slot 360. The snap-fit ​​portion 521 engages with the slot 360 to restrict vertical movement of the second noise reduction structure 520. This allows the second noise reduction structure 520 to be stably mounted on the partition 300, improves the positional stability of the second noise reduction structure 520, and ensures the working performance of the second noise reduction structure 520 to a certain extent.

[0123] At the same time, the second noise reduction structure 520 and the partition 300 are fixedly matched by using the snap-fitting cooperation of the snap-fitting portion 521 and the snap-fitting slot 360, which not only reduces the difficulty of assembling the second noise reduction structure 520 and the partition 300, but also makes the installation of the second noise reduction structure 520 and the partition 300 convenient and improves the assembly efficiency. At the same time, it also makes the second noise reduction structure 520 and the partition 300 form a detachable fit.

[0124] In some embodiments, combined Figure 9 、 Figure 12 、 Figure 15 and Figure 16 As shown, the partition 300 is provided with a clamping slot 360 , and the second noise reduction structure 520 is provided with a clamping portion 521 .

[0125] In other embodiments, the second noise reduction structure 520 is provided with a locking slot 360 , and the partition 300 is provided with a locking portion 521 .

[0126] In some embodiments, combined Figure 9 、 Figure 12 、 Figure 15 and Figure 16 As shown, the engaging portion 521 and / or the structure forming the slot 360 has a second guide surface 700 for guiding the engaging portion 521 into the slot 360. This refers to the engaging portion 521 having the second guide surface 700; or the structure forming the slot 360 having the second guide surface 700; or, alternatively, both the engaging portion 521 and the structure forming the slot 360 have the second guide surface 700. The second guide surface 700 is used to guide the engaging portion 521 into the slot 360, thereby reducing the difficulty in fitting the engaging portion 521 and the slot 360, thereby reducing the difficulty in connecting the second noise reduction structure 520 and the partition 300.

[0127] In a specific example, combining Figure 12 and Figure 16 As shown, both the engaging portion 521 and the structure forming the engaging slot 360 have a second guide surface 700 , which further reduces the difficulty of matching the engaging portion 521 and the engaging slot 360 .

[0128] In some embodiments, the second mounting opening 322 has a bottom wall facing its opening, and the second guide surface 700 extends vertically from the opening of the second mounting opening 322 to the bottom wall gradually toward the center of the second mounting opening 322, so as to facilitate the use of the second guide surface 700 to guide the clamping portion 521 to be clamped into the clamping slot 360.

[0129] In some embodiments, combined Figure 9 、 Figure 12 、 Figure 15 and Figure 16As shown, one of the partition 300 and the second noise reduction structure 520 is provided with a plug-in protrusion 522, and the other is provided with a vertically extending slot 370. The plug-in protrusion 522 is plugged into the slot 370. This allows the partition 300 and the second noise reduction structure 520 to be plugged into each other. At the same time, it can also guide the second noise reduction structure 520 during assembly, allowing the second noise reduction structure 520 to be accurately installed on the partition 300, reducing the difficulty of connecting the second noise reduction structure 520 and the partition 300.

[0130] In some embodiments, combined Figure 12 and Figure 16 As shown, the inserting protrusion 522 is located on the second noise reduction structure 520 , and the slot 370 is located on the partition 300 .

[0131] In other embodiments, the slot 370 is located in the second noise reduction structure 520 , and the insertion protrusion 522 is located in the partition 300 (not shown in this example).

[0132] In some embodiments, the separator 300 is provided with two spaced-apart fourth mating protrusions 390, with a slot 370 formed between two adjacent fourth mating protrusions 390. This reduces the difficulty of forming the slot 370 and avoids directly grooving the separator 300, thereby preventing damage to the separator 300 and extending the service life of the separator 300.

[0133] In some embodiments, combined Figure 9 、 Figure 12 and Figure 16 As shown, the plug-in protrusion 522 is located on the second noise reduction structure 520 , and the slot 370 is located on the partition 300 and communicates with the second installation opening 322 , so that the plug-in protrusion 522 can be effectively assembled into the slot 370 and plugged into the slot 370 .

[0134] In some embodiments, combined Figure 15 and Figure 16 As shown, the plug-in protrusion 522 has a third guide surface 5221, which is used to guide the plug-in protrusion 522 into the slot 370. This reduces the difficulty of plugging the plug-in protrusion 522 into the slot 370, thereby reducing the difficulty of assembling the second noise reduction structure 520.

[0135] In some embodiments, combined Figure 15 and Figure 16 As shown, in the direction from the middle to the end of the plug-in protrusion 522, the transverse thickness of at least a portion of the plug-in protrusion 522 located at the end of the plug-in protrusion 522 gradually decreases, so as to form a third guide surface 5221 on the plug-in protrusion 522, so as to facilitate the use of the third guide surface 5221 to guide the plug-in protrusion 522 to be inserted into the slot 370.

[0136] In some embodiments, combined Figure 9 and Figure 12 As shown, the structure forming the slot 370 has a fourth guide surface 380 near the opening. The fourth guide surface 380 is used to guide the second noise reduction structure 520 from the opening into the second mounting opening 322. This reduces the difficulty of plugging and mating the second noise reduction structure 520 with the second mounting opening 322, further reducing the difficulty of assembling the second noise reduction structure 520.

[0137] In some embodiments, combined Figure 9 and Figure 12 As shown, the second mounting opening 322 has a bottom wall facing its opening, and the fourth guide surface 380 extends vertically from the opening of the second mounting opening 322 to the bottom wall gradually toward the center of the second mounting opening 322, so as to facilitate the use of the fourth guide surface 380 to guide the second noise reduction structure 520 to be inserted from the opening into the second mounting opening 322.

[0138] In some embodiments, combined Figure 9 、 Figure 13 and Figure 15 As shown, the noise reduction structure 500 includes a first noise reduction member 530 and a second noise reduction member 540. The first noise reduction member 530 is disposed on the side of the second noise reduction member 540 facing the fan chamber 220. A first noise reduction cavity is formed between the first noise reduction member 530 and the second noise reduction member 540. The first noise reduction hole 113 is disposed in the first noise reduction member 530. In other words, the first noise reduction cavity of the present application is formed by the cooperation of the first noise reduction member 530 and the second noise reduction member 540, which reduces the difficulty of forming the first noise reduction cavity.

[0139] At the same time, since the first noise reduction component 530 is arranged on the side of the second noise reduction component 540 facing the fan cavity 220, by arranging the first noise reduction hole 113 on the first noise reduction component 530, the first noise reduction hole 113 can be arranged between the first noise reduction cavity and the fan cavity 220, so as to facilitate the use of the first noise reduction hole 113 to achieve the coordinated connection between the first noise reduction cavity and the fan cavity 220, thereby reducing the difficulty of connecting the first noise reduction cavity and the fan cavity 220.

[0140] In some embodiments, combined Figure 9 、 Figure 13 and Figure 15As shown, the first noise reducer 530 and the second noise reducer 540 are detachably connected via a snap-fit ​​assembly 550. This not only reduces the difficulty of fitting the first noise reducer 530 and the second noise reducer 540 together, improves assembly efficiency, and facilitates repair and replacement of the first noise reducer 530 and the second noise reducer 540, but also allows the first noise reducer 530 and the second noise reducer 540 to be formed as two independent parts. This allows the first noise reducer 530 and the second noise reducer 540 to be independently processed and formed during production, reducing the difficulty of forming the first noise reducer 530 and the second noise reducer 540, and facilitating quality assurance and improved performance of the noise reduction structure 500.

[0141] In some embodiments, combined Figure 13 and Figure 14 As shown, the snap-fit ​​assembly 550 includes a first protrusion 551 and a second protrusion 552 that snap together. The first protrusion 551 is provided on one of the first noise reducer 530 and the second noise reducer 540, and the second protrusion 552 is provided on the other of the first noise reducer 530 and the second noise reducer 540. The snap-fit ​​assembly 550 allows for a detachable connection between the first and second noise reducers 530 and 540, reducing the difficulty of connecting the first and second noise reducers 530 and 540.

[0142] In some embodiments, combined Figure 13 and Figure 14 As shown, a bayonet 5521 is formed in the second protrusion 552, and the first protrusion 551 is arranged in the bayonet 5521 to achieve a snap-fit ​​fit between the first protrusion 551 and the second protrusion 552, thereby reducing the difficulty of connecting the first protrusion 551 and the second protrusion 552, and further reducing the difficulty of connecting the first noise reduction component 530 and the second noise reduction component 540.

[0143] In some embodiments, combined Figure 13 and Figure 14 As shown, a fifth guide surface 5511 is provided on the first protrusion 551 , and the fifth guide surface 5511 is used to guide the first protrusion 551 to be inserted into the bayonet 5521 , further reducing the difficulty of connecting the first protrusion 551 and the second protrusion 552 .

[0144] In some embodiments, the noise reduction structure 500 further includes a separation rib (not shown in the figure), which is disposed between the first noise reduction component 530 and the second noise reduction component 540 to form a plurality of first noise reduction cavities between the first noise reduction component 530 and the second noise reduction component 540 .

[0145] It should be noted that the wavelength range of a single Helmholtz resonator is too narrow. Based on this, the present application forms multiple first noise reduction cavities between the first noise reduction component 530 and the second noise reduction component 540. The multiple first noise reduction cavities can cooperate to form a combination of multiple Helmholtz resonators to absorb noise of specific frequencies and improve the noise reduction effect.

[0146] In addition, by providing a separation rib between the first noise reduction component 530 and the second noise reduction component 540 to form a plurality of first noise reduction cavities, the difficulty of forming the plurality of first noise reduction cavities can be reduced, thereby reducing the difficulty of noise reduction.

[0147] In the description of the present invention, unless otherwise specified, “a plurality of” means two or more.

[0148] In some embodiments, each first noise reduction cavity is connected to the fan cavity 220 through at least one first noise reduction hole 113. This means that each first noise reduction cavity is connected to the fan cavity 220 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, thereby achieving the purpose of noise reduction by using the first noise reduction cavity.

[0149] In some embodiments, one of the first noise reduction member 530 and the second noise reduction member 540 is integrally formed with the partition rib, and the other is abutted against the partition rib. This means that when the first noise reduction member 530 is integrally formed with the partition rib, the second noise reduction member 540 abuts against the partition rib; or, when the second noise reduction member 540 is integrally formed with the partition rib, the first noise reduction member 530 abuts against the partition rib. This reduces the difficulty of forming the partition rib and allows the opposing ends of the partition rib to abut against the first noise reduction member 530 and the second noise reduction member 540, respectively. This ensures the sealing of each first noise reduction cavity after assembly, thereby maintaining the noise reduction effect of the first noise reduction cavity.

[0150] In some embodiments, the separation rib is integrally formed with the first noise reduction member 530. This reduces the difficulty of forming the separation rib and allows the first noise reduction member 530 to support the separation rib, thereby improving the positional stability of the separation rib and ensuring the performance of the separation rib to a certain extent.

[0151] In other embodiments, the separation rib and the second noise reduction member 540 are integrally formed.

[0152] In some embodiments, combined Figure 2 、 Figure 3 and Figure 4As shown, the fan assembly 100 includes a volute 110 and a wind wheel 140. The volute 110 defines an air duct 111. The inlet 1112 of the air duct 111 is in communication with the fan chamber 220, and the outlet 1111 of the air duct 111 is in communication with the heat exchange chamber 210. 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 the air in the fan chamber 220 into the air duct 111 through the inlet 1112 of the air duct 111, and the wind wheel 140 can be used to discharge the air in the air duct 111 into the heat exchange chamber 210 through the outlet 1111 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.

[0153] 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 provides an installation port 320 on the partition 300, and arranges the noise reduction structure 500 on the installation port 320, so as to realize the arrangement of the noise reduction structure 500 on the partition 300, thereby facilitating the use of the first noise reduction hole 113 and the first noise reduction cavity to cooperate in absorbing the noise generated during the rotation of the wind wheel 140 and the flow of air, thereby achieving the purpose of noise reduction.

[0154] In some embodiments, combined Figure 4 、 Figure 5 and Figure 6 As shown, the volute 110 is connected to the partition 300, and the noise reduction structure 500 is away from the volute 110. This can prevent interference between the noise reduction structure 500 and the volute 110 during assembly, reducing the difficulty of assembling the noise reduction structure 500 and the volute 110. At the same time, it can also prevent the volute 110 from hindering the sound absorption and noise reduction of the noise reduction structure 500, thereby improving the performance of the noise reduction structure 500.

[0155] In some embodiments, combined Figure 2 、 Figure 3 and Figure 4 As shown, the volute 110 includes a first shell 116 and a second shell 117 disposed vertically opposite each other, defining an air duct 111 therebetween. The first shell 116 has a volute tongue 118 near the partition 300. 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.

[0156] In some embodiments, combined Figure 2 、 Figure 3 and Figure 4As shown, the first housing 116 is disposed below the second housing 117 , such that the first housing 116 forms a lower volute and the second housing 117 forms an upper volute.

[0157] 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.

[0158] 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 .

[0159] In some embodiments, combined Figure 4 、 Figure 5 and Figure 6 As shown, at least a portion of the noise reduction structure 500 is located on opposite sides of the volute 110 in the longitudinal direction. While the noise reduction structure 500 can be arranged away from the volute 110, it can also be arranged close to the volute 110 to reduce the noise of the air entering the volute 110 and improve the noise reduction effect.

[0160] In some embodiments, combined Figure 3 、 Figure 4 and Figure 6 As shown, at least a portion of the noise reduction structure 500 is disposed near the volute tongue 118 and is located on the side of the first housing 116 facing away from the second housing 117. Because the first housing 116 has the volute tongue 118 near the partition 300, a larger space is provided on the side of the first housing 116 facing away from the second housing 117. By disposing at least a portion of the noise reduction structure 500 near the volute tongue 118 and on the side of the first housing 116 facing away from the second housing 117, the aforementioned space can be fully utilized. While allowing the noise reduction structure 500 to be disposed close to the volute 110, the size of the duct air conditioner 1000 is avoided from being increased due to the provision of the noise reduction structure 500, resulting in the duct air conditioner 1000 having the advantage of occupying a smaller space.

[0161] In a specific example, combining Figure 3 、 Figure 4 and Figure 6As shown, the noise reduction structures 500 include multiple structures, at least some of which are located on opposite sides of the volute 110 in the longitudinal direction, and at least some of which are located near the volute tongue 118 and on the side of the first shell 116 facing away from the second shell 117. This fully utilizes the space on the outer periphery of the volute 110, allowing a large number of noise reduction structures 500 to be installed in the ducted air conditioner 1000. The cooperation of multiple noise reduction structures 500 can effectively reduce the noise generated by the fan assembly 100 during operation, thereby making the fan assembly 100 have the advantage of low operating noise and improving the user experience.

[0162] In some embodiments, combined Figure 3 、 Figure 8 and Figure 9 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.

[0163] Optionally, at least a portion of the wall of the partition 300 defining the communication opening 310 has a second noise reduction cavity and a second noise reduction hole (not shown), the second noise reduction hole connecting the second noise reduction cavity and the communication opening 310. Thus, when air flows through the communication opening 310, sound waves in the airflow can enter the second noise reduction cavity through the second noise reduction hole, thereby facilitating the use of the second noise reduction hole and the second noise reduction cavity to absorb noise of a specific frequency, thereby achieving the purpose of noise reduction.

[0164] The principle by which the sound waves can resonate in the second noise reduction cavity is the same as the principle by which the sound waves can resonate in the first noise reduction cavity, and will not be elaborated here.

[0165] The duct air conditioner 1000 of the present application will be described in detail below with reference to the accompanying drawings.

[0166] 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 , a heat exchanger 400 and a plurality of noise reduction structures 500 .

[0167] Combine Figure 2 、 Figure 3 and Figure 4As shown, the partition 300 is provided 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 arranged in the transverse direction. The heat exchanger 400 is provided in the heat exchange cavity 210, and the fan assembly 100 is provided in the fan cavity 220. The fan assembly 100 includes a volute 110 and a wind wheel 140. The volute 110 is connected to the partition 300. The volute 110 includes a first shell 116 and a second shell 110 arranged opposite to each other in the vertical direction. 17. The first shell 116 has a volute tongue 118 near the partition 300. An air duct 111 is defined between the first shell 116 and the second shell 117. The inlet 1112 of the air duct 111 is connected to the fan chamber 220, and the outlet 1111 of the air duct 111 is connected to the heat exchange chamber 210. The wind wheel 140 is rotatably provided in the air duct 111 to drive the air flow in the air duct 111, thereby driving the air flow in the fan chamber 220 to flow toward the heat exchange chamber 210.

[0168] Combine Figure 6 、 Figure 9 、 Figure 13 and Figure 15 As shown, the noise reduction structure 500 includes a first noise reduction component 530, a second noise reduction component 540 and a separating rib. The first noise reduction component 530 is arranged on the side of the second noise reduction component 540 facing the fan cavity 220. The separating rib is arranged between the first noise reduction component 530 and the second noise reduction component 540 to form a plurality of first noise reduction cavities between the first noise reduction component 530 and the second noise reduction component 540. The first noise reduction hole 113 is arranged in the first noise reduction component 530. The first noise reduction hole 113 is arranged toward the fan cavity 220 and connects the first noise reduction cavity and the fan cavity 220.

[0169] Combine Figure 9 and Figure 13 As shown, a plurality of mounting openings 320 are provided on the partition 300, and the mounting openings 320 connect the heat exchange chamber 210 and the fan chamber 220, wherein a portion of the mounting openings 320 are first mounting openings 321, and the hole walls of the first mounting openings 321 are closed on all sides, and the first mounting openings 321 are located on opposite sides of the volute 110 in the longitudinal direction. Among the plurality of noise reduction structures 500, a portion of the noise reduction structures 500 are first noise reduction structures 510, and the first noise reduction structure 510 is suitable for being detachably installed in the first mounting opening 321 in the transverse direction, so as to realize that at least a portion of the noise reduction structure 500 is located on opposite sides of the volute 110 in the longitudinal direction.

[0170] Among them, combined Figure 9 、 Figure 10 and Figure 13As shown, the partition 300 is provided with two guide protrusions 350, and the two guide protrusions 350 are respectively arranged on the opposite sides of the first noise reduction structure 510 in the vertical direction. The first noise reduction structure 510 is respectively provided with two third matching protrusions 513 spaced apart in the longitudinal direction at the opposite ends in the vertical direction. A guide groove 512 is formed between the two third matching protrusions 513, and the guide groove 512 extends in the transverse direction. The guide protrusion 350 is slidably matched with the guide groove 512 to realize the sliding fit of the first noise reduction structure 510 on the partition 300.

[0171] Combine Figure 9 、 Figure 10 、 Figure 11 、 Figure 13 and Figure 14 As shown, the partition 300 is provided with a first limiting portion 330 and a second limiting portion 340 arranged in the transverse direction, the first limiting portion 330 and the second limiting portion 340 are provided on the hole wall of the first mounting opening 321, the first limiting portion 330 is closer to the fan chamber 220 than the second limiting portion 340, the first limiting portion 330 includes a first limiting protrusion 331 extending in the vertical direction, the second limiting portion 340 includes two second limiting protrusions 341 extending in the vertical direction, the first limiting protrusion 331 and the second limiting protrusion 341 are arranged opposite to each other in the transverse direction, and the second limiting protrusion 341 is provided with a first guide surface 600, and the first guide surface 600 extends gradually from the heat exchange chamber 210 to the fan chamber 220 in the transverse direction toward the center of the first mounting opening 321; the first noise reduction structure 510 A limiting fitting portion 511 is provided, and the limiting fitting portion 511 includes a first fitting protrusion 5111 and two second fitting protrusions 5112. The first fitting protrusion 5111 and the second fitting protrusion 5112 are arranged horizontally and vertically. The first fitting protrusion 5111 is closer to the fan chamber 220 than the second fitting protrusion 5112. A first guide surface 600 is provided on the second fitting protrusion 5112. The first guide surface 600 extends horizontally from the heat exchange chamber 210 to the fan chamber 220 gradually toward the center of the first mounting port 321. The first guide surface 600 on the second fitting protrusion 5112 and the first guide surface 600 on the second limiting protrusion 341 cooperate to guide the limiting fitting portion 5111 to be inserted between the first limiting protrusion 331 and the second limiting protrusion 341.

[0172] When the limiting fitting part 511 is inserted between the first limiting protrusion 331 and the second limiting protrusion 341, the first limiting protrusion 331 stops on the side of the first matching protrusion 5111 facing the fan chamber 220. The number of the second limiting protrusions 341 of each second limiting part 340 is equal to the number of the second matching protrusions 5112 of each limiting fitting part 511 and the positions correspond one to one. The second limiting protrusion 341 stops on the side of the corresponding second matching protrusion 5112 facing the heat exchange chamber 210, so as to realize that the limiting fitting part 511 is arranged laterally between the first limiting part 330 and the second limiting part 340, thereby limiting the lateral movement of the first noise reduction structure 510.

[0173] Among them, combined Figure 10 and Figure 13 As shown, the first limiting portion 330 is an annular protrusion extending along the circumference of the first noise reduction structure 510, and the number of the second limiting portions 340 is two. The two second limiting portions 340 are respectively arranged on opposite sides of the first noise reduction structure 510 in the longitudinal direction, and the number of limiting matching portions 511 is equal to the number of the second limiting portions 340 and the positions correspond one to one.

[0174] Combine Figure 9 and Figure 13 As shown, another part of the mounting opening 320 is the second mounting opening 322 and the second mounting opening 322 has an opening on one side in the vertical direction. The second mounting opening 322 is located on the side of the first shell 116 away from the second shell 117. Another part of the noise reduction structure 500 is the second noise reduction structure 520. The second noise reduction structure 520 is suitable for being installed vertically from the opening into the second mounting opening 322, so that at least a part of the noise reduction structure 500 is arranged close to the volute tongue 118 and is located on the side of the first shell 116 away from the second shell 117.

[0175] Among them, combined Figure 9 、 Figure 12 、 Figure 15 and Figure 16 As shown, the partition 300 is provided with a slot 370 extending vertically, and the structure forming the slot 370 has a fourth guide surface 380 near the opening, and the second noise reduction structure 520 is provided with an inserting protrusion 522, and the inserting protrusion 522 has a third guide surface 5221. The third guide surface 5221 and the fourth guide surface 380 cooperate to guide the second noise reduction structure 520 to be inserted into the second installation port 322 from the opening.

[0176] Combine Figure 9 、 Figure 12 、 Figure 15 and Figure 16As shown, the partition 300 is provided with a card slot 360, and the second noise reduction structure 520 is provided with a card connecting portion 521. The card connecting portion 521 and the structure forming the card slot 360 have a second guide surface 700. The second guide surface 700 is used to guide the card connecting portion 521 to be snapped into the card slot 360 to achieve the snap-fitting between the card connecting portion 521 and the card slot 360, thereby limiting the vertical movement of the second noise reduction structure 520.

[0177] Combine Figure 3 、 Figure 8 and Figure 9 As shown, the partition 300 defines a connecting port 310, which connects the heat exchange chamber 210 and the outlet 1111 of the air duct 111. The partition 300 defines that at least part of the wall of the connecting port 310 has a second noise reduction chamber and a second noise reduction hole, and the second noise reduction hole connects the second noise reduction chamber and the connecting port 310.

[0178] 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.

[0179] 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.

[0180] The specific structures and working principles of other components of the duct air conditioner 1000 according to the embodiment of the present invention, such as the wind wheel 140 and the heat exchanger 400, are known to ordinary technicians in this field and will not be described in detail here.

[0181] 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.

[0182] 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 duct type air conditioner, characterized in that: include: shell; a partition, the partition being arranged in the housing to divide the inner cavity of the housing into a heat exchange cavity and a fan cavity arranged in a transverse direction, the partition being provided with an installation opening, the installation opening being in communication with the heat exchange cavity and the fan cavity; a heat exchanger, the heat exchanger being disposed in the heat exchange cavity; a fan assembly, the fan assembly being disposed in the fan cavity and configured to drive the airflow in the fan cavity toward the heat exchange cavity; A noise reduction structure is provided at the mounting port and includes a first noise reduction cavity and a first noise reduction hole. The first noise reduction hole is arranged toward the fan cavity and connects the first noise reduction cavity and the fan cavity.

2. The duct type air conditioner according to claim 1, characterized in that: The noise reduction structure and the partition are detachably matched.

3. The duct type air conditioner according to claim 1, characterized in that: At least one of the mounting openings is a first mounting opening and the hole wall of the first mounting opening is closed on all sides. At least one of the noise reduction structures is a first noise reduction structure, and the first noise reduction structure is suitable for being installed in the first mounting opening along the transverse direction.

4. The duct type air conditioner according to claim 3, characterized in that: One of the first noise reduction structure and the partition is provided with a first limiting portion and a second limiting portion arranged in the horizontal direction, and the other of the first noise reduction structure and the partition is provided with a limiting matching portion, and the limiting matching portion is arranged between the first limiting portion and the second limiting portion in the horizontal direction to limit the movement of the first noise reduction structure in the horizontal direction.

5. The duct type air conditioner according to claim 4, characterized in that: The first limiting portion is closer to the fan cavity than the second limiting portion, the first limiting portion includes a first limiting protrusion extending along a first direction, the second limiting portion includes at least one second limiting protrusion extending along the first direction, the first limiting protrusion and the second limiting protrusion are arranged opposite to each other in the transverse direction, and the first direction is longitudinal or vertical.

6. The duct type air conditioner according to claim 5, characterized in that: The position-limiting mating portion includes a first mating protrusion and at least one second mating protrusion, the first mating protrusion and the second mating protrusion are arranged in the transverse direction and the first direction, and the first mating protrusion is closer to the fan cavity than the second mating protrusion; In which, the first limiting protrusion stops at the side of the first matching protrusion facing the fan cavity, the number of the second limiting protrusions of each second limiting part is equal to the number of the second limiting protrusions of each limiting matching part and the positions correspond one to one, and the second limiting protrusion stops at the side of the corresponding second matching protrusion facing the heat exchange cavity.

7. The duct type air conditioner according to claim 5, characterized in that: The first limiting portion is an annular protrusion extending along the circumference of the first noise reduction structure; And / or, the number of the second limiting parts is at least two, and at least two of the second limiting parts are respectively arranged on the opposite sides of the first noise reduction structure in the second direction, the number of the limiting matching parts is equal to the number of the second limiting parts and the positions correspond one to one, and one of the first direction and the second direction is vertical and the other is longitudinal.

8. The duct type air conditioner according to claim 5, characterized in that: The first limiting portion and the second limiting portion are provided on the hole wall of the first mounting opening, and the limiting matching portion is provided on the first noise reduction structure; In which, the second limiting protrusion and / or the limiting matching part has a first guide surface, and the first guide surface extends gradually from the heat exchange chamber to the fan chamber in the transverse direction toward the center of the first mounting port, and is used to guide the limiting matching part to be inserted between the first limiting protrusion and the second limiting protrusion.

9. The duct type air conditioner according to claim 4, characterized in that: One of the first noise reduction structure and the partition is provided with a guide protrusion, and the other is provided with a guide groove extending along the transverse direction, and the guide protrusion is slidably matched with the guide groove.

10. The duct type air conditioner according to claim 9, characterized in that: The first noise reduction structure and the other of the partitions are provided with at least two third matching protrusions spaced apart in the second direction, the guide groove is formed between two adjacent third matching protrusions, and the second direction is vertical or longitudinal.

11. The duct type air conditioner according to claim 10, characterized in that: The third mating protrusion is provided on the first noise reduction structure, the first limiting portion is provided on the partition and is formed as an annular protrusion extending along the circumference of the first noise reduction structure, and the first limiting portion stops on the side of the third mating protrusion facing the fan cavity.

12. The duct type air conditioner according to claim 10, characterized in that: The number of the guide protrusions is at least two, and the at least two guide protrusions are respectively arranged on two opposite sides of the first noise reduction structure in a first direction, one of the first direction and the second direction is vertical and the other is longitudinal.

13. The duct type air conditioner according to claim 1, characterized in that: At least one of the mounting openings is a second mounting opening and the second mounting opening has an opening on one side in the vertical direction. At least one of the noise reduction structures is a second noise reduction structure, and the second noise reduction structure is suitable for being installed from the opening to the second mounting opening along the vertical direction.

14. The duct type air conditioner according to claim 13, characterized in that: One of the partition and the second noise reduction structure is provided with a clamping portion and the other is provided with a clamping slot. The clamping portion is clamped and matched with the clamping slot to limit the second noise reduction structure from moving in the vertical direction.

15. The duct type air conditioner according to claim 14, characterized in that: The engaging portion and / or the structure forming the engaging slot has a second guide surface for guiding the engaging portion to engage in the engaging slot.

16. The duct type air conditioner according to claim 13, characterized in that: One of the partition and the second noise reduction structure is provided with an inserting protrusion and the other is provided with a slot extending along the vertical direction, and the inserting protrusion is inserted and matched with the slot.

17. The duct type air conditioner according to claim 16, characterized in that: The plug-in protrusion is located on the second noise reduction structure, and the slot is located on the partition and communicates with the second installation port; Wherein, the plug-in protrusion has a third guide surface for guiding the plug-in protrusion to be inserted into the slot; And / or, a fourth guide surface is provided at a position close to the opening on the structure forming the slot, for guiding the second noise reduction structure to be inserted into the second installation port from the opening.

18. The duct-type air conditioner according to any one of claims 1 to 17, characterized in that: The noise reduction structure includes a first noise reduction component and a second noise reduction component. The first noise reduction component is arranged on the side of the second noise reduction component facing the fan cavity. The first noise reduction cavity is formed between the first noise reduction component and the second noise reduction component. The first noise reduction hole is arranged in the first noise reduction component.

19. The duct type air conditioner according to claim 18, characterized in that: The noise reduction structure further includes a separation rib, which is provided between the first noise reduction component and the second noise reduction component to form a plurality of first noise reduction cavities between the first noise reduction component and the second noise reduction component.

20. The duct-type air conditioner according to any one of claims 1 to 17, characterized in that: The fan assembly includes: a volute, the volute defining an air duct, the inlet of the air duct communicating with the fan cavity, and the outlet of the air duct communicating with the heat exchange cavity; A wind wheel is rotatably disposed in the air duct to drive the air flow in the air duct.

21. The duct type air conditioner according to claim 20, characterized in that: The volute is connected to the partition, and the noise reduction structure avoids the volute.

22. The duct type air conditioner according to claim 20, characterized in that: The volute comprises a first shell and a second shell arranged vertically opposite to each other, the air duct is defined between the first shell and the second shell, and the first shell has a volute tongue near the partition; At least a portion of the noise reduction structure is located on opposite sides of the volute in the longitudinal direction; and / or, at least a portion of the noise reduction structure is arranged close to the volute tongue and is located on a side of the first shell facing away from the second shell.

23. The duct type air conditioner according to claim 20, 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; Wherein, at least a portion of the wall of the partition defining the communicating port has a second noise reduction cavity and a second noise reduction hole, and the second noise reduction hole connects the second noise reduction cavity and the communicating port.

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