Air conditioner

Abstract

The utility model discloses an air conditioner which comprises a machine shell assembly, a heat exchanger assembly and an air channel assembly, an air outlet is formed in the front portion of the machine shell assembly, an air inlet is formed in the rear portion of the machine shell assembly, the heat exchanger assembly is arranged in the machine shell assembly, and the air channel assembly is arranged in the machine shell assembly and comprises an air channel volute and a fan assembly. An air duct communicating with the air inlet and the air outlet is formed in the air duct volute, the fan assembly is installed on the air duct volute and comprises a fan, the fan comprises a wind wheel and a motor, the motor is connected with the wind wheel, at least part of the wind wheel is located in the air duct, and the rotating axis of the wind wheel extends in the vertical direction. A sound absorption structure is arranged on the side, away from the wind wheel, of the rear volute tongue. According to the air conditioner, airflow flows through the side, away from the wind wheel, of the rear volute tongue, the sound absorption structure can absorb or weaken noise generated in the flowing process of the airflow, the noise transmitted to the outside by the air conditioner is reduced, and the noise reduction effect on the air conditioner is achieved.

Description

Technical Field

[0001] The utility model relates to the field of air conditioning, in particular to an air conditioner. Background Art

[0002] In the related art, the air intake imbalance in the air duct of the air conditioner causes the air conditioner to generate loud noise during operation, affecting the user experience. Therefore, improvements are needed. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide an air conditioner in which a sound-absorbing structure is provided on the side of the rear volute facing away from the impeller. When air enters the air duct of the air duct volute from the air inlet, the sound-absorbing structure can absorb or weaken the noise generated by the air flow passing through the side of the rear volute facing away from the impeller, thereby reducing the noise transmitted to the outside world by the air conditioner, thereby achieving the effect of reducing the noise of the air conditioner.

[0004] According to an embodiment of the present invention, the air conditioner includes: a casing assembly, wherein an air outlet is formed at the front of the casing assembly, and an air inlet is formed at the rear of the casing assembly; a heat exchanger assembly is arranged in the casing assembly; an air duct assembly is arranged in the casing assembly and includes an air duct volute and a fan assembly, the air duct volute has an air duct connecting the air inlet and the air outlet, the fan assembly is installed in the air duct volute and includes a fan, the fan includes a wind wheel and a motor, the motor is connected to the wind wheel, at least a portion of the wind wheel is located in the air duct and the rotation axis of the wind wheel extends in the up and down directions, the air duct volute includes a rear volute tongue, and a sound absorbing structure is provided on the side of the rear volute tongue facing away from the wind wheel.

[0005] According to the air conditioner of the embodiment of the present invention, a sound-absorbing structure is provided on the side of the rear volute facing away from the wind wheel. When air enters the air duct of the air duct volute from the air inlet, the air flow passes through the side of the rear volute facing away from the wind wheel. The sound-absorbing structure can absorb or weaken the noise generated during the air flow, thereby reducing the noise transmitted to the outside world by the air conditioner, thereby achieving the effect of reducing the noise of the air conditioner.

[0006] According to some embodiments of the present invention, the sound absorbing structure includes a sound absorbing groove formed on the rear volute tongue, and there are multiple sound absorbing grooves, and at least some of the sound absorbing grooves are arranged in the up and down direction.

[0007] According to some embodiments of the present invention, the cross-section of the sound absorbing groove is polygonal.

[0008] According to some embodiments of the present invention, the depth of the sound absorbing groove is h, 2mm≤h≤6mm.

[0009] According to some embodiments of the present invention, the length of the sound absorbing groove in the up-down direction is j, 4mm≤j≤8mm; and / or the width of the sound absorbing groove is g, 2mm≤g≤5mm, and the width direction of the sound absorbing groove is perpendicular to the up-down direction.

[0010] According to some embodiments of the present invention, the distance between adjacent sound-absorbing grooves on the rear snail tongue is i, 1mm≤i≤3mm.

[0011] According to some embodiments of the present invention, the end of the rear volute tongue close to the air inlet is the rear volute tongue end, and the sound absorbing structure is provided at the rear volute tongue end.

[0012] According to some embodiments of the present invention, a portion of the outer surface of the duct volute facing the air inlet is formed with a plurality of guide ribs arranged at intervals along the up and down directions, and the guide ribs extend in the direction of the air flow inlet close to the duct volute.

[0013] According to some embodiments of the present invention, the spacing between adjacent guide ribs located on the same side of the air duct volute in the vertical direction is k, and 12mm≤k≤40mm.

[0014] According to some embodiments of the present invention, the sound absorbing structure is located on a side of the guide rib close to the air flow inlet.

[0015] According to some embodiments of the present invention, the duct volute includes a detachably connected front volute and a duct partition, the front volutes are two arranged along the left and right directions, the duct partition is located between the two front volutes, and the duct partition and the two front volutes jointly define the two air ducts, the fan assembly includes two fans arranged along the left and right directions, the wind wheels of the two fans are respectively located in the two air ducts, the air outlets are two arranged at intervals along the left and right directions, the two air outlets are respectively connected to the two air ducts, and the duct partition includes two rear volute tongues arranged along the left and right directions, and the sound absorbing structure is provided on both rear volute tongues.

[0016] According to some embodiments of the present invention, the air duct partition includes a middle partition and a rear partition that are detachably connected, the middle partition is connected between the rear partition and the front volute, the middle partition is detachably connected to the front volute, and the rear partition includes two rear volute tongues arranged along the left and right directions.

[0017] According to some embodiments of the present invention, the outer surface of the air duct partition is formed with a plurality of guide ribs arranged at intervals along the up and down directions, the guide ribs are adjacent to the rear volute tongue, and the guide ribs extend toward the direction of the air flow inlet close to the air duct volute.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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:

[0020] Figure 1 is a schematic diagram of an indoor unit of an air conditioner according to some embodiments of the present invention;

[0021] Figure 2 yes Figure 1 Cross-sectional view of the indoor unit of the air conditioner;

[0022] Figure 3 yes Figure 1 A three-dimensional schematic diagram of the air duct assembly;

[0023] Figure 4 yes Figure 3 Exploded view of the duct assembly in ;

[0024] Figure 5 yes Figure 4 A three-dimensional schematic diagram of the front volute;

[0025] Figure 6 yes Figure 4 A three-dimensional schematic diagram of the middle partition in FIG.

[0026] Figure 7 yes Figure 4 A three-dimensional schematic diagram of the second cover and the rear partition;

[0027] Figure 8 yes Figure 7 A three-dimensional schematic diagram of the rear partition structure;

[0028] Figure 9 yes Figure 8 Enlarged view of point C in the middle.

[0029] Reference numerals:

[0030] 100. Air conditioner indoor unit;

[0031] 2. Casing assembly; 21. Air inlet; 22. Air outlet;

[0032] 3. Heat exchanger assembly; 31. Heat exchanger bracket; 32. Heat exchanger;

[0033] 4. Air duct assembly; 41. Air duct volute; 411. Front volute; 413. Air duct partition; 4131. Middle partition; 4132. Rear partition; 414. Air duct; 4141. Guide rib; 42. Rear volute tongue; 421. Sound-absorbing structure; 422. Sound-absorbing groove; 423. End of volute tongue; 44. Fan assembly; 441. Wind wheel; 442. Motor; 443. Bushing; 444. Fan; 45. Motor cover; 451. First cover; 452. Second cover. DETAILED DESCRIPTION

[0034] The following describes in detail embodiments of the present invention. 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.

[0035] Reference below Figures 1-9 An air conditioner according to an embodiment of the present invention is described.

[0036] According to the air conditioner of the embodiment of the present invention, Figure 1-Figure 2 , including: a casing component 2, a heat exchange component and an air duct 414 component 4.

[0037] For example, the air conditioner is a split-type air conditioner, which is divided into an air conditioner indoor unit 100 and an air conditioner outdoor unit. The air conditioner indoor unit 100 includes a casing component 2, a heat exchange component and an air duct 414 component 4.

[0038] An air outlet 22 is formed at the front of the housing assembly 2, and an air inlet 21 is formed at the rear of the housing assembly 2. The heat exchanger 32 assembly 3 is disposed within the housing assembly 2. The air duct 414 assembly 4 is disposed within the housing assembly 2 and includes an air duct volute 41 and a fan assembly 44. The air duct volute 41 defines an air duct 414 connecting the air inlet 21 and the air outlet 22. The fan assembly 44 is mounted on the air duct volute 41 and includes a fan 444. The fan 444 includes a rotor 441 and a motor 442. The motor 442 is connected to the rotor 441. At least a portion of the rotor 441 is located within the air duct 414, and the rotation axis of the rotor 441 extends in the vertical direction. For example, if the air conditioner is a vertical split-type air conditioner, the rotation axis of the rotor 441 extends in the vertical direction. When the air conditioner is running, the impeller 441 rotates along the axis of rotation, driving air into the air conditioner from the rear air inlet 21 of the casing assembly 2. After the air flow passes through the heat exchange assembly and exchanges heat with the heat exchange assembly, the impeller 441 drives the air flow along the air duct 414 and finally flows out of the air conditioner through the air outlet 22.

[0039] For example, the air duct 414 assembly 4 further includes a motor cover 45 , which is used to shield and protect the motor 442 .

[0040] For example, the wind wheel 441 further includes a shaft sleeve 443 .

[0041] Furthermore, the duct volute 41 includes a rear volute tongue 42, and a sound-absorbing structure 421 is provided on the side of the rear volute tongue 42 facing away from the impeller 441. As air enters the duct 414 of the duct volute 41 through the air inlet 21, the air flows through the side of the rear volute tongue 42 facing away from the impeller 441, causing noise generated by the operation of the air conditioner to be transmitted to the sound-absorbing structure 421. The sound-absorbing structure 421 absorbs or attenuates the noise generated by the air flow, thereby reducing the noise transmitted to the outside world by the air conditioner, thereby achieving the effect of reducing the noise of the air conditioner.

[0042] For example, the sound-absorbing structure 421 weakens the noise to achieve the effect of reducing the noise of the air conditioner. The interior of the sound-absorbing structure 421 has multiple holes. When the air conditioner generates noise during operation, the noise is transmitted to the sound-absorbing structure 421. The noise can penetrate into the sound-absorbing material along the holes and rub against the side walls of the holes to convert part of the sound energy into heat energy, thereby reducing the sound energy of the noise and reducing the noise of the air conditioner.

[0043] For example, the sound-absorbing structure 421 absorbs sound through the trap principle to achieve the effect of reducing the noise of the air conditioner. The surface of the sound-absorbing structure 421 has multiple holes. When the air conditioner generates noise during operation, the noise is transmitted to the holes on the surface of the sound-absorbing structure 421, and is reflected multiple times inside the holes. The energy gradually decreases, so that the energy of the noise is weaker when it leaves the hole through the opening of the hole, thereby reducing the noise of the air conditioner.

[0044] According to the air conditioner of the embodiment of the present invention, a sound-absorbing structure 421 is provided on the side of the rear volute 42 facing away from the wind wheel 441. In the process of air entering the air duct 414 of the air duct volute 41 from the air inlet 21, the air flow passes through the side of the rear volute 42 facing away from the wind wheel 441, so that the noise generated by the operation of the air conditioner can be transmitted to the sound-absorbing structure 421. The sound-absorbing structure 421 can absorb or weaken the noise generated during the air flow, so that the noise transmitted to the outside world by the air conditioner is reduced, thereby achieving the effect of reducing the noise of the air conditioner.

[0045] According to some embodiments of the present invention, referring to Figure 8 and Figure 9 The sound-absorbing structure 421 includes multiple sound-absorbing grooves 422 formed on the rear volute 42, at least some of which are arranged in the vertical direction. By including the sound-absorbing grooves 422 formed on the rear volute 42, when the noise generated by the air conditioner is transmitted to the sound-absorbing grooves 422, the noise enters the grooves 422 and is reflected multiple times within the grooves 422. The energy of the noise gradually decreases with the number of reflections, resulting in a weaker noise when the noise exits the hole through the opening, thereby reducing the noise of the air conditioner.

[0046] By providing a plurality of sound-absorbing grooves 422 and arranging at least some of the sound-absorbing grooves 422 in the up-down direction, the distribution area of ​​the sound-absorbing structure 421 can be increased, so that all parts of the air conditioner in the up-down direction can benefit from the noise reduction effect of the sound-absorbing grooves 422, thereby improving the noise reduction capability of the sound-absorbing structure 421.

[0047] According to some embodiments of the present invention, referring to Figure 9 The cross-section of the sound-absorbing groove 422 is polygonal. For example, the cross-section of the sound-absorbing groove 422 can be rectangular, trapezoidal, or hexagonal. Another example is that the sound-absorbing groove 422 can be honeycomb-shaped. By making the cross-section of the sound-absorbing groove 422 polygonal, the opening of the sound-absorbing groove 422 can be larger, fully absorbing and accommodating noise. It also makes it easier to arrange multiple sound-absorbing grooves 422, increasing the number of sound-absorbing grooves 422 and thus improving the noise reduction capability of the sound-absorbing structure 421.

[0048] According to some embodiments of the present invention, referring to Figure 9 The depth of the sound-absorbing groove 422 is h, where 2mm≤h≤6mm. For example, the depth h of the sound-absorbing groove 422 can be 2mm, 3mm, 4mm, 5mm, 6mm, etc. By ensuring that the depth h of the sound-absorbing groove 422 is no less than 2mm, the sound-absorbing capacity of the sound-absorbing groove 422 is enhanced, thereby improving the noise reduction capability of the sound-absorbing groove 422. By ensuring that the depth h of the sound-absorbing groove 422 is no greater than 6mm, the sound-absorbing groove 422 is prevented from being too deep, thereby reducing the structural strength of the rear volute tongue 42.

[0049] According to some embodiments of the present invention, referring to Figure 9 The vertical length j of the sound-absorbing groove 422 is 4 mm ≤ j ≤ 8 mm. For example, the vertical length j of the sound-absorbing groove 422 can be 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, etc. By ensuring that the vertical length j of the sound-absorbing groove 422 is no less than 4 mm, the opening of the sound-absorbing groove 422 can be sufficiently large to accommodate noise, thereby improving the sound absorption capacity of the sound-absorbing groove 422. By ensuring that the vertical length j of the sound-absorbing groove 422 is no more than 8 mm, more sound-absorbing grooves 422 can be arranged in the vertical direction of the rear volute, increasing the number of sound-absorbing grooves 422 and thus improving the noise reduction capacity of the sound-absorbing structure 421.

[0050] According to some embodiments of the present invention, referring to Figure 9The width of the sound-absorbing groove 422 is g, 2mm≤g≤5mm, and the width direction of the sound-absorbing groove 422 is perpendicular to the vertical direction. For example, the width g of the sound-absorbing groove 422 can be 2mm, 3mm, 4mm, 5mm, etc. By ensuring that the width g of the sound-absorbing groove 422 is not less than 2mm, the opening of the sound-absorbing groove 422 can be made sufficiently large to accommodate noise, thereby improving the sound absorption capacity of the sound-absorbing groove 422. By ensuring that the width g of the sound-absorbing groove 422 is not greater than 5mm, the sound absorption capacity of the sound-absorbing groove 422 can be increased, preventing the opening of the sound-absorbing groove 422 from being too large, which would easily cause sound to escape from the sound-absorbing groove 422 through the opening.

[0051] According to some embodiments of the present invention, referring to Figure 9 The spacing between adjacent sound-absorbing grooves 422 on the rear volute 42 is i, where 1mm≤i≤3mm. For example, the spacing i between adjacent sound-absorbing grooves 422 on the same rear volute 42 can be 1mm, 1.5mm, 2mm, 2.5mm, 3mm, etc. By ensuring that the spacing i between adjacent sound-absorbing grooves 422 on the same rear volute 42 is no less than 1mm, the sidewalls of the sound-absorbing grooves 422 have sufficient thickness and structural strength, preventing the sidewalls of the sound-absorbing grooves 422 from bending and damaging, thereby reducing the noise reduction effect. By ensuring that the spacing i between adjacent sound-absorbing grooves 422 on the same rear volute 42 is no greater than 3mm, more sound-absorbing grooves 422 can be arranged in the vertical direction of the rear volute, increasing the number of sound-absorbing grooves 422 and thereby improving the noise reduction capability of the sound-absorbing structure 421.

[0052] According to some embodiments of the present invention, referring to Figure 8 and Figure 9 The end of the rear volute 42 closest to the air inlet 21 is the end of the rear volute 42, and the sound-absorbing structure 421 is disposed at the end of the rear volute 42. As the airflow passes through the rear volute 42, the direction of the airflow changes, and the noise generated near the rear volute 42 is relatively loud. By disposing the sound-absorbing structure 421 at the end of the rear volute 42, a better sound absorption and noise reduction effect can be achieved.

[0053] According to some embodiments of the present invention, referring to Figure 7 and Figure 8 The portion of the outer surface of the duct volute 41 facing the air inlet 21 is formed with a plurality of guide ribs 4141 spaced apart in the vertical direction. The guide ribs 4141 extend toward the air inlet of the duct volute 41. While increasing the rigidity of the duct baffle 413 of the motor cover 45, the baffles 413 simultaneously guide the airflow into the left and right ducts 414 of the dual cross-flow main duct 414, reducing turbulence within the duct 414, lowering noise in the duct 414, and weakening or eliminating abnormal sounds in the duct 414, thereby enhancing the user experience and comfort.

[0054] According to some embodiments of the present invention, referring to Figure 8 The vertical spacing between adjacent guide ribs 4141 on the same side of the air duct volute 41 is k, and 12mm≤k≤40mm. For example, the vertical spacing k between adjacent guide ribs 4141 on the same air duct volute 41 can be 12mm, 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, etc. By ensuring that the vertical spacing k between adjacent guide ribs 4141 on the same air duct volute 41 is not less than 12mm, a sufficiently large gap can be provided between adjacent guide ribs 4141 for air flow to flow through; by ensuring that the vertical spacing k between adjacent guide ribs 4141 on the same air duct volute 41 is not greater than 40mm, the rectifying effect of the guide ribs 4141 can be enhanced, and the noise reduction effect of the guide ribs 4141 can be enhanced.

[0055] According to some embodiments of the present invention, referring to Figure 2 and Figure 8 The sound-absorbing structure 421 is located on the side of the guide rib 4141 near the air inlet. The air inlet is noisier, and the sound-absorbing structure 421 has a stronger noise reduction effect than the guide rib 4141. By locating the sound-absorbing structure 421 on the side of the guide rib 4141 near the air inlet, the sound-absorbing structure 421 with a stronger noise reduction effect can be placed closer to the noisier area, allowing the sound-absorbing structure 421 to fully absorb and reduce the noise in the noisy area, thereby improving the noise reduction effect of the air conditioner.

[0056] According to some embodiments of the present invention, referring to Figure 3-Figure 8The duct volute 41 includes a detachably connected front volute 411 and a duct partition 413. The front volute 411 is arranged in two in the left and right directions. The duct partition 413 is located between the two front volutes 411, and the duct partition 413 and the two front volutes 411 jointly define two air ducts 414. The fan assembly 44 includes two fans 444 arranged in the left and right directions. The wind wheels 441 of the two fans 444 are respectively located in the two air ducts 414. The air outlet 22 is arranged in two in the left and right directions at intervals. The two air outlets 22 are respectively connected to the two air ducts 414. The duct partition 413 includes two rear volute tongues 42 arranged in the left and right directions. The two rear volute tongues 42 are provided with a sound absorbing structure 421. By having the air duct volute 41 include two front volutes 411, and the fan assembly 44 include two fans 444 arranged in the left and right directions, with the impellers 441 of the two fans 444 respectively located in the two air ducts 414, the air-driving ability of the air conditioner can be improved, thereby enhancing the performance of the air conditioner. By having two air outlets 22 spaced apart in the left and right directions, the air conditioner can adjust the temperature over a wider range of spaces. By forming a sound-absorbing structure 421 on the rear volute tongues 42 of both air duct volutes 41, both air ducts 414 can benefit from the sound-absorbing and noise-reducing effects of the sound-absorbing structure 421, thereby achieving a better noise reduction effect on the air conditioner.

[0057] For example, the two front volutes 411 of the air duct volute 41 are connected and integrally formed. By integrally forming the two front volutes 411 of the two air duct volutes 41, the number of parts of the air conditioner can be reduced, making it more convenient to install and disassemble the air conditioner.

[0058] According to some embodiments of the present invention, referring to Figure 6 and Figure 7 The air duct partition 413 includes a detachably connected middle partition 4131 and a rear partition 4132. The middle partition 4131 is connected between the rear partition 4132 and the front volute 411. The middle partition 4131 and the front volute 411 are detachably connected. The rear partition 4132 includes two rear volute tongues 42 arranged in the left and right directions. By making the middle partition 4131 and the rear partition 4132 detachably connected, and the middle partition 4131 and the front volute 411 detachably connected, it is easier for personnel to install and remove the air conditioner.

[0059] For example, the front volute 411 and the air duct baffle 413 are connected by a snap connection. In the related art, the front volute 411 and the air duct baffle 413 need to be connected by fasteners such as screws. By connecting the front volute 411 and the air duct baffle 413 by a snap connection, the number of fasteners used in the air conditioner can be reduced, such as the number of screws, making the installation and removal of the air conditioner more convenient.

[0060] For example, the middle partition plate 4131 is connected to the rear partition plate 4132 by a snap connection. By making the middle partition plate 4131 and the rear partition plate 4132 connected by a snap connection, the number of fasteners used in the air conditioner can be reduced, such as the number of screws, making it easier to install and remove the air conditioner.

[0061] According to some embodiments of the present invention, the outer surface of the air duct baffle 413 is formed with a plurality of guide ribs 4141 spaced apart in the vertical direction. The guide ribs 4141 are adjacent to the rear volute tongue 42 and extend in a direction close to the air inlet of the air duct volute 41. By extending the guide ribs 4141 in a direction close to the air inlet of the air duct volute 41, the guide ribs 4141 can guide the airflow in the direction in which the guide ribs 4141 extend, causing the airflow to flow from the air inlet into the air duct volute 41. This makes the airflow direction more uniform, reduces turbulence, and achieves better noise reduction for the air conditioner.

[0062] For example, the air duct partition 413 includes a detachably connected middle partition 4131 and a rear partition 4132, the middle partition 4131 is connected between the rear partition 4132 and the front volute 411, the middle partition 4131 and the front volute 411 are detachably connected, the rear partition 4132 includes two rear volute tongues 42 arranged along the left and right directions, and the guide rib 4141 is arranged on the rear partition 4132.

[0063] For example, the air duct volute 41 also includes a motor cover 45, which includes a first cover body 451 and a second cover body 452 connected front and back, the first cover body 451 is arranged on the top of the front volute 411, and the second cover body 452 is arranged on the top of the rear partition 4132. The motor cover 45 can be used to cover and protect the motor 442 to prevent the motor 442 from being damaged by bumps. The first cover body 451 is connected to the front volute 411 and is integrally formed, and the second cover body 452 is connected to the rear partition 4132 and is integrally formed. By connecting the first cover body 451 to the front volute 411 and forming it as one piece, and connecting the second cover body 452 to the rear partition 4132 and forming it as one piece, the number of fasteners used in the air conditioner can be reduced, such as reducing the number of screws, making it easier to install and disassemble the air conditioner.

[0064] Refer to the following Figures 1-9 The air conditioner according to some specific embodiments of the present invention is described.

[0065] In this embodiment, the air conditioner is a split type air conditioner, which includes an indoor air conditioner 100 and an outdoor air conditioner, wherein the indoor air conditioner 100 is a vertical indoor air conditioner 100. The air conditioner includes: a housing assembly 2, a heat exchange assembly and an air duct 414 assembly 4.

[0066] An air outlet 22 is formed at the front of the housing assembly 2 , and an air inlet 21 is formed at the rear of the housing assembly 2 .

[0067] The heat exchanger 32 assembly 3 is disposed in the casing assembly 2 .

[0068] The air duct assembly 414 is disposed within the housing assembly 2 and includes a duct volute 41 and a fan assembly 44. The duct volute 41 defines an air duct 414 that connects the air inlet 21 with the air outlet 22. The portion of the outer surface of the duct volute 41 facing the air inlet 21 is formed with a plurality of vertically spaced guide ribs 4141. These ribs extend toward the air inlet of the duct volute 41. The vertical spacing between adjacent guide ribs 4141 on the same side of the duct volute 41 is k, with a value of 12 mm ≤ k ≤ 40 mm. The duct volute 41 includes a detachably connected front volute 411 and a duct partition 413. The front volute 411 is arranged in two along the left and right directions. The duct partition 413 is located between the two front volutes 411, and the duct partition 413 and the two front volutes 411 together define two air ducts 414. The duct partition 413 includes two rear volute tongues 42 arranged along the left and right directions. The duct partition 413 includes a detachably connected middle partition 4131 and a rear partition 4132. The middle partition 4131 is connected between the rear partition 4132 and the front volute 411. The middle partition 4131 is detachably connected to the front volute 411, and the rear partition 4132 includes two rear volute tongues 42 arranged along the left and right directions.

[0069] The fan assembly 44 is installed on the air duct volute 41 and includes two fans 444 arranged along the left and right directions. The wind wheels 441 of the two fans 444 are respectively located in the two air ducts 414. There are two air outlets 22 arranged at intervals along the left and right directions. The two air outlets 22 are respectively connected to the two air ducts 414. The fan 444 includes a wind wheel 441 and a motor 442. The motor 442 is connected to the wind wheel 441. At least part of the wind wheel 441 is located in the air duct 414 and the rotation axis of the wind wheel 441 extends along the up and down directions.

[0070] The air duct volute 41 includes two rear volute tongues 42, each equipped with a sound-absorbing structure 421. The end of the rear volute tongue 42 closest to the air inlet 21 is the rear volute tongue 42 terminal. The sound-absorbing structure 421 is located at the rear volute tongue 42 terminal, on the side of the guide rib 4141 closest to the air inlet. The sound-absorbing structure 421 absorbs sound through a trapping principle, thereby reducing air conditioner noise. The sound-absorbing structure 421 includes multiple sound-absorbing grooves 422 formed on the rear volute tongue 42. The grooves 422 are arranged vertically, with at least some of them extending vertically. The cross-section of the grooves 422 is polygonal. The depth of the grooves 422 is h, ranging from 2 mm to 6 mm. The length of the grooves 422 in the vertical direction is j, ranging from 4 mm to 8 mm. The width of the grooves 422 is g, ranging from 2 mm to 5 mm. The width of the grooves 422 is perpendicular to the vertical direction. The distance between adjacent sound absorbing grooves 422 on the rear volute tongue 42 is i, 1mm≤i≤3mm.

[0071] 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.

[0072] In the description of the present invention, "first feature" and "second feature" may include one or more such features.

[0073] In the description of the present invention, “plurality” means two or more.

[0074] In the description of the present invention, a first feature being “above” or “below” a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact via another feature therebetween.

[0075] In the description of the present invention, a first feature “above”, “above” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0076] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means 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, the illustrative use of the above terms does 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.

[0077] 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. An air conditioner, characterized in that: include: A housing assembly, wherein an air outlet is formed at the front of the housing assembly and an air inlet is formed at the rear of the housing assembly; a heat exchanger assembly, disposed in the housing assembly; An air duct assembly is arranged in the casing assembly and includes an air duct volute and a fan assembly. The air duct volute has an air duct connecting the air inlet and the air outlet. The fan assembly is installed in the air duct volute and includes a fan. The fan includes a wind wheel and a motor. The motor is connected to the wind wheel. At least part of the wind wheel is located in the air duct and the rotation axis of the wind wheel extends in the up and down directions. The air duct volute includes a rear volute tongue. A sound absorbing structure is provided on the side of the rear volute tongue facing away from the wind wheel.

2. The air conditioner according to claim 1, characterized in that The sound absorbing structure includes a sound absorbing groove formed on the rear volute tongue, and there are multiple sound absorbing grooves, at least some of which are arranged in the up-down direction.

3. The air conditioner according to claim 2, characterized in that The cross section of the sound absorbing groove is polygonal.

4. The air conditioner according to claim 2, characterized in that The depth of the sound absorbing groove is h, 2mm≤h≤6mm.

5. The air conditioner according to claim 2, characterized in that: The length of the sound absorbing groove in the up-down direction is j, 4mm≤j≤8mm; and / or the width of the sound absorbing groove is g, 2mm≤g≤5mm, and the width direction of the sound absorbing groove is perpendicular to the up-down direction.

6. The air conditioner according to claim 2, characterized in that The distance between adjacent sound-absorbing grooves on the rear volute tongue is i, 1mm≤i≤3mm.

7. The air conditioner according to claim 1, wherein: The end of the rear volute tongue close to the air inlet is the rear volute tongue end, and the sound absorbing structure is arranged at the rear volute tongue end.

8. The air conditioner according to claim 1, wherein: A portion of the outer surface of the air duct volute facing the air inlet is formed with a plurality of guide ribs spaced apart in the up-down direction, and the guide ribs extend in a direction close to the air flow inlet of the air duct volute.

9. The air conditioner according to claim 8, characterized in that The distance between adjacent guide ribs located on the same side of the air duct volute in the up-down direction is k, and 12 mm ≤ k ≤ 40 mm.

10. The air conditioner according to claim 8, characterized in that The sound absorbing structure is located on a side of the guide rib close to the air flow inlet.

11. The air conditioner according to claim 1, wherein: The duct volute includes a detachably connected front volute and a duct partition, the front volutes are two arranged along the left and right directions, the duct partition is located between the two front volutes, and the duct partition and the two front volutes together define the two air ducts, the fan assembly includes two fans arranged along the left and right directions, the wind wheels of the two fans are respectively located in the two air ducts, the air outlets are two arranged at intervals along the left and right directions, the two air outlets are respectively connected to the two air ducts, the duct partition includes two rear volute tongues arranged along the left and right directions, and the sound absorbing structure is provided on both rear volute tongues.

12. The air conditioner according to claim 11, characterized in that The air duct partition includes a middle partition and a rear partition that are detachably connected. The middle partition is connected between the rear partition and the front volute. The middle partition is detachably connected to the front volute. The rear partition includes two rear volute tongues arranged along the left and right directions.

13. The air conditioner according to claim 11, wherein The outer surface of the air duct partition is formed with a plurality of guide ribs spaced apart in the up-down direction, the guide ribs are adjacent to the rear volute tongue, and the guide ribs extend in a direction close to the air flow inlet of the air duct volute.

Images