Air conditioner

Abstract

The utility model discloses an air conditioner which comprises an air processing device, the air processing device comprises an air duct volute and a wind wheel, the air duct volute comprises a volute body and a silencing cover, the volute body is provided with an airflow inlet and an airflow outlet, the volute body comprises a motor mounting part, and a silencing hole structure is formed on the volute body. The noise reduction hole structure comprises at least one of a first noise reduction hole structure and a second noise reduction hole structure, the first noise reduction hole structure surrounds the peripheral side of the airflow inlet, the second noise reduction hole structure surrounds the peripheral side of the motor mounting part, and the noise reduction cover comprises at least one of a first noise reduction cover and a second noise reduction cover; the first silencing cover is arranged on the periphery of the first silencing hole structure in a covering mode, and a first silencing cavity is defined between the first silencing cover and the volute body. The second silencing cover is arranged on the periphery of the second silencing hole structure in a covering mode, and a second silencing cavity is defined between the second silencing cover and the volute body. According to the air conditioner provided by the embodiment of the utility model, the noise generated in the working process can be reduced.

Description

Technical Field

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

[0002] In the related art, the fan wheel in the air conditioner generates a lot of noise during operation. The volute can suck in air and then blow it out after acceleration. The high-speed wind will rub against the volute, which often causes the volute to make a lot of noise. Therefore, there is room for improvement. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide an air conditioner, by arranging a silencer hole structure on the volute body, so that a silencer cover is arranged around the silencer hole structure, the silencer hole structure is located on the outer peripheral side of the air flow inlet and / or the outer peripheral side of the motor mounting part, the generated noise can be transmitted through the silencer hole structure to the silencer cavity defined between the silencer cover and the volute body for noise reduction treatment, and the noise generated during the working process can be reduced.

[0004] According to an air conditioner of an embodiment of the utility model, the air conditioner includes an air handling device, the air handling device includes an air duct volute and a wind wheel, the air duct volute includes: a volute body, having an air flow inlet and an air flow outlet, the volute body includes a motor mounting portion, the motor mounting portion and the air flow inlet are located on both axial sides of the volute body, a muffler hole structure is formed on the volute body, the muffler hole structure includes at least one of a first muffler hole structure and a second muffler hole structure, the first muffler hole structure surrounds the outer peripheral side of the air flow inlet and penetrates the wall of the volute body Thick, the second silencer hole structure surrounds the outer peripheral side of the motor mounting portion and penetrates the wall thickness of the volute body, and the wind wheel is arranged in the volute body; a silencer cover, the silencer cover includes at least one of a first silencer cover and a second silencer cover, the first silencer cover is arranged around the first silencer hole structure and defines a first silencer cavity between the volute body, the first silencer cover is formed with an air flow opening opposite to and connected with the air flow inlet, and the second silencer cover is arranged around the second silencer hole structure and defines a second silencer cavity between the volute body.

[0005] According to the air conditioner of the embodiment of the utility model, a silencer hole structure is provided in the volute body, so that a silencer cover is provided on the surrounding part of the silencer hole structure, and the silencer hole structure is located on the peripheral side of the air flow inlet and / or the peripheral side of the motor mounting part. The noise generated near the air flow inlet and / or the motor mounting part can be transmitted to the silencer cavity of the silencer cover through the silencer hole structure for noise reduction treatment, thereby reducing the noise generated during operation.

[0006] According to some embodiments of the utility model, the volute body includes a volute part and an air outlet part, the volute part is used to accommodate the wind wheel and has the air flow inlet, the air outlet part has the air flow outlet, and the first silencer hole structure is formed in the volute part and the air outlet part.

[0007] According to some embodiments of the present invention, the first silencer cover is detachably connected to the volute body; and / or the second silencer cover is detachably connected to the volute body.

[0008] According to some embodiments of the present invention, the first sound-absorbing hole structure and the second sound-absorbing hole structure both include a plurality of through holes arranged at intervals, and the equivalent diameter range of the through holes is 1.5 to 10 mm.

[0009] According to some embodiments of the present invention, the first silencing cavity is filled with a first sound absorbing material piece, and the first sound absorbing material piece surrounds the outer peripheral side of the airflow inlet.

[0010] According to some embodiments of the present invention, part of the first sound-absorbing material piece is accommodated in the first sound-absorbing hole structure to block the first sound-absorbing hole.

[0011] According to some embodiments of the present invention, the thickness of the first sound-absorbing material piece in the axial direction of the volute body is greater than the depth of the first sound-absorbing cavity in the axial direction of the volute body; the difference between the thickness of the first sound-absorbing material piece in the axial direction of the volute body and the depth of the first sound-absorbing cavity in the axial direction of the volute body is in the range of 1 to 10 mm.

[0012] According to some embodiments of the utility model, the first silencer cover includes a first cover, a first flange and a second flange, the first flange and the second flange are both connected to the side of the first cover facing the volute body and are both sealed with the volute body, the first flange surrounds the outer peripheral side of the air flow opening, the second flange is connected to the outer peripheral edge of the first cover, and the first sound-absorbing material piece is located between the first flange and the second flange.

[0013] According to some embodiments of the present invention, the second silencing cavity is filled with a second sound absorbing material.

[0014] According to some embodiments of the present invention, part of the second sound-absorbing material piece is accommodated in the second sound-absorbing hole structure to block the second sound-absorbing hole structure.

[0015] According to some embodiments of the present invention, the thickness of the second sound-absorbing material piece in the axial direction of the volute body is greater than the depth of the second sound-absorbing chamber in the axial direction of the volute body; the difference between the thickness of the second sound-absorbing material piece in the axial direction of the volute body and the depth of the second sound-absorbing chamber in the axial direction of the volute body is in the range of 1 to 10 mm.

[0016] According to some embodiments of the present invention, a evacuation opening for evading the motor mounting portion is formed on the second silencer cover, and the second sound absorbing material piece surrounds the outer peripheral side of the motor mounting portion.

[0017] According to some embodiments of the utility model, the second silencer cover includes a second cover, a third flange and a fourth flange, the third flange and the fourth flange are both connected to the side of the second cover facing the volute body, the third flange surrounds the outer peripheral side of the motor mounting part and is sealed with the outer peripheral surface of the motor mounting part, the fourth flange is connected to the outer peripheral edge of the second cover, the second sound-absorbing material piece is located between the third flange and the fourth flange, and a fifth flange protruding toward the second cover is formed on the volute body, and the fifth flange is sealed with the fourth flange.

[0018] According to some embodiments of the utility model, the fifth flange is located on the outer peripheral side of the fourth flange, the outer peripheral wall of the fifth flange is provided with a first fixing column, the second cover is provided with a first connecting lug, and the first connecting lug is connected to the first fixing column by a second fastener; the motor mounting part is provided with a second fixing column, the second cover is provided with a second connecting lug, and the second connecting lug is connected to the second fixing column by a third fastener.

[0019] According to some embodiments of the utility model, the volute body includes a detachably connected volute body and an air inlet cover plate, the volute body has the motor mounting portion on one axial side and the volute body is open on the other axial side, the air inlet cover plate is covered on the open side of the volute body, the air flow inlet is formed on the air inlet cover plate, the first silencer hole structure is formed on the air inlet cover plate, and the second silencer hole structure is formed on the volute body.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1 is a schematic diagram of an air duct volute of some embodiments of the utility model;

[0023] Figure 2 yes Figure 1 A schematic diagram of the duct volute from another angle;

[0024] Figure 3 yes Figure 1 A side view of the duct volute in FIG.

[0025] Figure 4 yes Figure 1 Exploded view of the duct volute in the figure;

[0026] Figure 5 yes Figure 1 A three-dimensional schematic diagram of the air inlet cover plate;

[0027] Figure 6 yes Figure 1 A front view of the air inlet cover in FIG.

[0028] Figure 7 yes Figure 2 A three-dimensional schematic diagram of the volute body in FIG.

[0029] Figure 8 yes Figure 2 A front view of the volute body in FIG.

[0030] Fig. 9 yes Figure 1 A three-dimensional schematic diagram of the first muffler cover;

[0031] Fig.10 yes Figure 1 A three-dimensional schematic diagram of another angle of the first muffler cover;

[0032] Fig.11 yes Figure 1 A front view of the first muffler cover;

[0033] Fig.12 yes Figure 1 A front view of the assembly of the first sound-absorbing cover and the first sound-absorbing material piece;

[0034] Fig.13 yes Fig.12 The cross-sectional view of line AA in the figure;

[0035] Fig.14 yes Figure 2 A three-dimensional schematic diagram of the second muffler cover;

[0036] Fig.15 yes Figure 2 A three-dimensional schematic diagram of another angle of the second muffler cover;

[0037] Fig.16 yes Figure 2 A three-dimensional schematic diagram of another angle of the second muffler cover;

[0038] Fig.17 yes Figure 2 A front view of the assembly of the second sound-absorbing cover and the second sound-absorbing material piece;

[0039] Fig.18 yes Fig.17 Cross-sectional view of line BB in .

[0040] Reference numerals:

[0041] 100. Air duct volute;

[0042] 1. volute body; 11. volute part; 111. airflow inlet; 12. air outlet; 121. airflow outlet; 13. motor mounting part; 131. second fixing column; 14. silencer hole structure; 141. first silencer hole structure; 142. second silencer hole structure; 15. through hole; 16. fifth flange; 161. first fixing column; 17. volute body; 18. air inlet cover plate;

[0043] 2. Silencing cover; 21. First silencing cover; 211. First cover; 212. First flange; 213. Second flange; 214. Air flow opening; 22. Second silencing cover; 221. Second cover; 222. Third flange; 223. Fourth flange; 224. Avoidance opening; 225. First connecting lug; 226. Second connecting lug; 23. First silencing cavity; 24. First sound absorbing material piece; 25. Second silencing cavity; 26. Second sound absorbing material piece;

[0044] 3. The first fastener;

[0045] 4. Second fastener;

[0046] 5. The third fastener. DETAILED DESCRIPTION

[0047] The embodiments of the present invention are described in detail below, and 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 only used to explain the present invention, and cannot be understood as limiting the present invention.

[0048] Reference below Figure 1-Figure 18 An air conditioner according to an embodiment of the present utility model is described.

[0049] Reference Figure 1-Figure 8According to the air conditioner of the embodiment of the utility model, the air conditioner includes an air treatment device, and the air treatment device includes an air duct volute 100 and a wind wheel. The wind wheel is arranged inside the air duct volute 100. During operation, the wind wheel can suck in air and then blow it out at an accelerated speed.

[0050] The air handling device may have at least one of the functions of purification, fresh air, temperature control, dehumidification and humidification.

[0051] For example, the air treatment device may be an air purifier, which has a purification function; the air treatment device may be a fresh air fan, which has a fresh air function; the air treatment device may be an air dryer, which has a dehumidification function; the air treatment device may be a humidifier, which has a humidification function.

[0052] For example, in some embodiments of the present invention, the air conditioner includes an air handling device, a housing, and a heat exchange and air supply unit. The heat exchange and air supply unit may include a heat exchanger component and a fan component.

[0053] The air duct volute 100 includes a volute body 1 and a silencer 2. By providing the silencer 2, the noise generated by the air duct volute 100 during operation can be soundproofed and reduced. The volute body 1 has an airflow inlet 111 and an airflow outlet 121. During operation of the air treatment device, the wind wheel located inside the volute body 1 rotates, and the airflow outside the air duct volute 100 is sucked into the air duct volute 100 through the airflow inlet 111, and finally blown out through the airflow outlet 121. The volute body 1 includes a motor mounting portion 13, and the motor mounting portion 13 and the airflow inlet 111 are located on both sides of the axial direction of the volute body 1. During operation of the wind wheel, the airflow has a relatively high wind speed when flowing inside the air duct volute 100 (for example, at the airflow inlet 111 and near the motor mounting portion 13). The airflow with a relatively high wind speed leads to relatively high noise, for example, the noise around the airflow inlet 111 inside the air duct volute 100 and the parts around the motor mounting portion 13 are relatively high.

[0054] A silencer hole structure 14 is formed on the volute body 1, and the silencer hole structure 14 includes at least one of a first silencer hole structure 141 and a second silencer hole structure 142. The first silencer hole structure 141 surrounds the outer peripheral side of the air flow inlet 111 and the first silencer hole structure 141 penetrates the wall thickness of the volute body 1, and the second silencer hole structure 142 surrounds the outer peripheral side of the motor mounting portion 13 and the second silencer hole structure 142 penetrates the wall thickness of the volute body 1, and the wind wheel is arranged in the volute body 1. The muffler cover 2 includes at least one of a first muffler cover 21 and a second muffler cover 22. The first muffler cover 21 is provided around the first muffler hole structure 141 and a first muffler cavity 23 is defined between the first muffler cover 21 and the volute body 1. The first muffler cover 21 is provided with an airflow opening 214 which is opposite to and connected with the airflow inlet 111. The second muffler cover 22 is provided around the second muffler hole structure 142 and a second muffler cavity 25 is defined between the second muffler cover 22 and the volute body 1. The muffler hole structure 14 may be provided at the airflow inlet 111 of the volute body 1, the muffler hole structure 14 may be provided at the motor mounting portion 13 of the volute body 1, or the muffler hole structure 14 may be provided at both the airflow inlet 111 of the volute body 1 and the motor mounting portion 13. By providing at least one of the first muffler hole structure 141 and the second muffler hole structure 142, it is possible to ensure that the noise generated during the operation of the wind wheel is reduced. By providing the first sound-absorbing hole structure 141 and the second sound-absorbing hole structure 142, the noise generated during the operation of the wind wheel can be further improved.

[0055] For example, the muffler hole structure 14 includes a first muffler hole structure 141, the muffler cover 2 includes a first muffler cover 21, a first muffler cavity 23 is defined between the first muffler cover 21 and the volute body 1, the first muffler hole structure 141 is formed around the outer peripheral side of the airflow inlet 111, the first muffler hole structure 141 penetrates the outer peripheral side of the airflow outlet 121 along the wall thickness direction of the volute body 1, and a first muffler cavity 23 is defined between the first muffler cover 21 and the volute body 1. By arranging the first muffler hole structure 141 around the outer peripheral side of the airflow outlet 121 and along the wall thickness direction of the volute body 1, the noise on the outer peripheral side of the airflow inlet 111 can be transmitted to the first muffler cavity 23 of the first muffler cover 21 through the first muffler hole structure 141, and the noise entering the first muffler cavity 23 through the first muffler hole structure 141 can be absorbed and consumed by the first muffler cavity 23, which can ensure that the noise on the outer peripheral side of the airflow inlet 111 is reduced during the operation of the wind wheel. In addition, when the noise generated at the airflow inlet 111 passes through the first silencer hole structure 141 , refraction, interference and diffraction will occur, thereby changing the propagation direction and path of the noise, thereby achieving the effect of reducing the noise on the peripheral side of the airflow inlet 111 .

[0056] Furthermore, by forming an air flow opening 214 on the first silencer cover 21, and the air flow opening 214 is opposite to and connected with the air flow inlet 111, the air flow entering from the air flow inlet 111 can flow into the first silencer hole structure 141 and into the first silencer cavity 23, and after being subjected to noise reduction treatment such as noise reduction and sound absorption by the first silencer cavity 23, it finally flows out from the air flow opening 214 on the first silencer cover 21, so that the air flow enters the next internal channel of the volute body 1 for internal flow.

[0057] For another example, the muffler hole structure 14 includes a second muffler hole structure 142, the muffler cover 2 includes a second muffler cover 22, a second muffler cavity 25 is defined between the second muffler cover 22 and the volute body 1, the second muffler hole structure 142 is formed around the outer peripheral side of the motor mounting portion 13, the second muffler hole structure 142 penetrates the outer peripheral side of the motor mounting portion 13 along the wall thickness direction of the volute body 1, and a second muffler cavity 25 is defined between the second muffler cover 22 and the volute body 1. By arranging the second muffler hole structure 142 around the outer peripheral side of the motor mounting portion 13 and along the wall thickness direction of the volute body 1, the noise generated by the motor mounting portion 13 can be transmitted to the second muffler cavity 25 of the second muffler cover 22 through the second muffler hole structure 142, and the noise entering the second muffler cavity 25 through the second muffler hole structure 142 can be absorbed and consumed by the second muffler cavity 25, which can ensure that the noise on the outer peripheral side of the motor mounting portion 13 is reduced during the operation of the wind wheel. In addition, when the noise generated by the motor mounting portion 13 passes through the second silencer hole structure 142 , refraction, interference, and diffraction may occur, thereby changing the propagation direction and path of the noise, thereby achieving the effect of reducing the noise on the peripheral side of the motor mounting portion 13 . For another example, the silencer hole structure 14 includes a first silencer hole structure 141 and a second silencer hole structure 142, and the silencer cover 2 includes a first silencer cover 21 and a second silencer cover 22. The first silencer cover 21 and the second silencer cover 22 respectively define a first silencer cavity 23 and a second silencer cavity 25 with the volute body 1, and the first silencer hole structure 141 and the second silencer hole structure 142 are respectively formed around the outer peripheral side of the air flow inlet 111 and the outer peripheral side of the motor mounting part 13, and the first silencer hole structure 141 penetrates the outer peripheral side of the air flow outlet 121 along the wall thickness direction of the volute body 1, and the second silencer hole structure 142 penetrates the outer peripheral side of the motor mounting part 13 along the wall thickness direction of the volute body 1, and the first silencer cover 21 defines a first silencer cavity 23 with the volute body 1, and the second silencer cover 22 defines a second silencer cavity 25 with the volute body 1. By setting a first silencer hole structure 141 around the outer peripheral side of the airflow outlet 121 and along the wall thickness direction of the volute body 1, and setting a second silencer hole structure 142 around the outer peripheral side of the motor mounting part 13 and along the wall thickness direction of the volute body 1, the noise generated at the airflow inlet 111 can be transmitted to the first silencer cavity 23 of the first silencer cover 21 through the first silencer hole structure 141, and the noise entering the first silencer cavity 23 through the first silencer hole structure 141 can be absorbed and consumed by the first silencer cavity 23, and the noise generated by the motor mounting part 13 can be transmitted to the second silencer cavity 25 of the second silencer cover 22 through the second silencer hole structure 142, and the noise entering the second silencer cavity 25 through the second silencer hole structure 142 can be absorbed and consumed by the second silencer cavity 25, which can ensure that the noise on the outer peripheral side of the airflow inlet 111 and the outer peripheral side of the motor mounting part 13 is reduced during the operation of the wind wheel.

[0058] According to the air conditioner of the embodiment of the utility model, the air conditioner includes an air treatment device, the air treatment device includes an air duct volute 100 and a wind wheel, the air duct volute 100 includes a volute body 1 and a silencer cover 2, by arranging a silencer hole structure 14 on the volute body 1, the silencer cover 2 is arranged on the surrounding part of the silencer hole structure 14, the silencer hole structure 14 is located on the outer peripheral side of the air flow inlet 111 and / or the outer peripheral side of the motor mounting part 13, the noise generated near the air flow inlet 111 and / or the motor mounting part 13 can be transmitted to the silencer cavity of the silencer cover 2 through the silencer hole structure 14 for noise reduction treatment, which can reduce the noise generated during the working process.

[0059] Reference Figure 1-Figure 8 According to some embodiments of the utility model, the volute body 1 includes a volute portion 11 and an air outlet portion 12, the volute portion 11 is used to accommodate a wind wheel and has an airflow inlet 111, the air outlet portion 12 has an airflow outlet 121, and a first muffler hole structure 141 is formed in the volute portion 11 and the air outlet portion 12. The volute portion 11 and the air outlet portion 12 are provided with the first muffler hole structure 141, so that the noise generated at the airflow inlet 111 and the airflow outlet 121 can be transmitted to the first muffler cavity 23 through the first muffler hole structure 141 for noise reduction treatment. A wind wheel cavity for accommodating a wind wheel is defined in the volute portion 11, and an airflow inlet 111 connected to the wind wheel cavity is provided on the volute portion 11, and an air outlet channel connected to the wind wheel cavity is defined in the air outlet portion 12, and an airflow outlet 121 is formed on the air outlet channel. During operation of the air treatment device, the wind wheel located in the wind wheel cavity rotates at a high speed, so that the airflow outside the air treatment device can be sucked into the interior of the air duct volute 100 through the air flow inlet 111, and then the sucked airflow is gathered at the air outlet channel, and finally the airflow is accelerated and blown out from the air flow outlet 121.

[0060] Reference Figure 1 , Figure 4 and Figure 5 According to some embodiments of the present invention, the first silencer cover 21 is detachably connected to the volute body 1, which can make the maintenance and replacement of the first silencer cover 21 more convenient.

[0061] Reference Figure 4 , Figure 5 and Figure 7 According to some embodiments of the present invention, the second silencer cover 22 is detachably connected to the volute body 1, which can make the maintenance and replacement of the second silencer cover 22 more convenient.

[0062] Reference Figure 1 , Figure 4 , Figure 5 and Figure 7According to some embodiments of the present invention, the first silencer cover 21 is detachably connected to the volute body 1, and the second silencer cover 22 is detachably connected to the volute body 1, which can facilitate the maintenance and replacement of the first silencer cover 21 and the second silencer cover 22.

[0063] Reference Figure 7 According to some embodiments of the present invention, the first muffler hole structure 141 and the second muffler hole structure 142 each include a plurality of through holes 15 arranged at intervals, and the equivalent diameter d of the through holes 15 ranges from 1.5 to 10 mm. The muffler hole structure 14 includes a plurality of through holes 15 arranged at intervals, and noise can be transmitted through the through holes 15 arranged at intervals on the muffler hole structure 14. In addition, by providing a plurality of through holes 15 at intervals on the muffler hole structure 14, it is convenient to process and manufacture the muffler hole structure 14, and the muffler hole structure 14 has a larger hollow area, so that more noise or airflow flows through the muffler hole structure 14 into the muffler cavity of the muffler cover 2 for noise reduction, further improving the noise reduction effect.

[0064] Optionally, the equivalent diameter d of the through hole 15 can be 1.5mm, 3.5mm, 6mm, 8.5mm, 10mm, etc. If the equivalent diameter d of the through hole 15 is less than 1.5mm, the aperture of the through hole 15 will be too small, resulting in a decrease in ventilation volume, causing poor ventilation of the silencer hole structure 14, which is not conducive to the passage of noise through the silencer hole structure 14, thereby affecting the noise reduction effect; if the equivalent diameter d of the through hole 15 is greater than 10mm, the aperture of the through hole 15 will be too large, resulting in a lower structural strength of the through hole 15, and the wind speed of the airflow flowing through the silencer hole structure 14 is faster, which can easily cause the silencer hole structure 14 to deform, thereby affecting the noise reduction effect of the silencer hole structure 14 on the volute body 1.

[0065] By setting the equivalent diameter d of the through hole 15 to 1.5-10 mm, the overall structural strength of the silencer hole structure 14 can be ensured, and at the same time, the hollow area of ​​the silencer hole structure 14 can be ensured, thereby ensuring the noise reduction effect.

[0066] It should be explained that the equivalent diameter d of the through hole 15 refers to the diameter of a circle having the same cross-sectional area as the through hole 15. If the cross-sectional area of ​​the through hole 15 is circular, the equivalent diameter d of the through hole 15 is the diameter of the cross-sectional area of ​​the through hole 15; if the cross-sectional area of ​​the through hole 15 is non-circular, the equivalent diameter d of the through hole 15 refers to the diameter of a circle having the same cross-sectional area as the through hole 15.

[0067] Reference Figure 4According to some embodiments of the present invention, the first sound absorbing material piece 24 is filled in the first sound absorbing cavity 23, and the first sound absorbing material piece 24 surrounds the outer peripheral side of the airflow inlet 111. The first sound absorbing material piece 24 is filled in the first sound absorbing cavity 23 and can be coated on the first sound absorbing hole structure 141. The noise generated at the airflow inlet 111 can enter the first sound absorbing material piece 24 of the first sound absorbing cavity 23 through the first sound absorbing hole structure 141. The first sound absorbing material piece 24 can absorb the noise transmitted from the first sound absorbing hole structure 141, thereby achieving noise reduction effects such as sound absorption and sound silencing.

[0068] Optionally, the first sound absorbing material piece 24 may be a sponge material, a flannel material or the like.

[0069] Optionally, the first sound absorbing material piece 24 may be manufactured in the shape of the first sound absorbing cover 21 , so that the assembly between the first sound absorbing cover 21 and the first sound absorbing material piece 24 is more convenient.

[0070] Reference Figure 4 According to some embodiments of the present invention, part of the first sound absorbing material piece 24 is accommodated in the first sound absorbing hole structure 141 to block the first sound absorbing hole, thereby avoiding air leakage at the position of the first sound absorbing hole structure 141. By setting the first sound absorbing material piece 24 to fill the first sound absorbing cavity 23 and partially accommodate it in the first sound absorbing hole structure 141, the noise generated by the air inlet can enter the first sound absorbing material piece 24 of the first sound absorbing cavity 23 through the first sound absorbing hole structure 141, and the first sound absorbing material piece 24 can absorb and block the noise transmitted from the first sound absorbing hole structure 141, thereby achieving noise reduction effects such as sound absorption and sound silencing.

[0071] Reference Figure 4 According to some embodiments of the utility model, the thickness of the first sound absorbing material piece 24 in the axial direction of the volute body 1 is greater than the depth of the first muffler cavity 23 in the axial direction of the volute body 1. Optionally, the thickness y1 of the first sound absorbing material piece 24 can be slightly greater than the depth h1 of the first muffler cavity 23 in the axial direction of the volute body 1, and the compressibility of the first sound absorbing material piece 24 itself can ensure the sealing effect, thereby ensuring the noise reduction effect while avoiding the air leakage phenomenon at the position of the first muffler hole structure 141.

[0072] Optionally, the difference between the thickness y1 of the first sound absorbing material piece 24 in the axial direction of the volute body 1 and the depth h1 of the first muffler cavity 23 in the axial direction of the volute body 1 is in the range of 1 to 10 mm. For example, the difference between the thickness y1 of the first sound absorbing material piece 24 in the axial direction of the volute body 1 and the depth h1 of the first silencer cavity 23 in the axial direction of the volute body 1 can be 1 mm, 3 mm, 5 mm, 10 mm, etc. If the difference between the thickness y1 of the first sound absorbing material piece 24 and the depth h1 of the first silencer cavity 23 in the axial direction of the volute body 1 is less than 1 mm, the thickness y1 of the first sound absorbing material piece 24 will be smaller, resulting in a poor sealing effect of the first silencer cavity 23; if the difference between the thickness y1 of the first sound absorbing material piece 24 and the depth h1 of the first silencer cavity 23 in the axial direction of the volute body 1 is greater than 10 mm, the thickness y1 of the first sound absorbing material piece 24 will be larger, occupying a larger space. In the case of limited assembly space, the space of the first silencer cavity 23 will also be smaller, thereby affecting the noise reduction effect of the first silencer cover 21 at the airflow inlet 111.

[0073] By setting the difference between the thickness y1 of the first sound absorbing material piece 24 in the axial direction of the volute body 1 and the depth h1 of the first silencer cavity 23 in the axial direction of the volute body 1 to 1-10 mm, the sealing effect can be ensured, thereby ensuring the noise reduction effect while avoiding air leakage in the first silencer cavity 23.

[0074] Reference Figure 5-Figure 7 According to some embodiments of the utility model, the first silencer cover 21 includes a first cover 211, a first flange 212 and a second flange 213. The first flange 212 and the second flange 213 can improve the overall structural strength of the first silencer cover 21 to a certain extent. The first flange 212 and the second flange 213 are both connected to the side of the first cover 211 facing the volute body 1, and the first flange 212 and the second flange 213 are both sealed with the volute body 1. Through the sealing cooperation between the first flange 212 and the second flange 213 on the first silencer cover 21 and the volute body 1, the sealing effect between the first silencer cover 21 and the volute body 1 can be improved, and the noise entering the first silencer cavity 23 can be avoided or reduced from leaking out from the cooperation between the first silencer cover 21 and the volute body 1, thereby further improving the noise reduction effect. In addition, it is also possible to reduce or avoid the airflow in the air outlet channel entering the first silencer cavity 23 of the first silencer cover 21 through the first silencer hole structure 141, and causing air volume loss by leaking from the fitting point between the first silencer cover 21 and the volute body 1, thereby ensuring that the noise reduction of the air outlet part 12 is achieved while reducing the impact on the air volume of the air outlet part 12.

[0075] Reference Figure 5-Figure 7, wherein the first flange 212 surrounds the outer peripheral side of the air flow opening 214, and the second flange 213 is connected to the outer peripheral edge of the first cover 211. By arranging the first flange 212 around the outer peripheral side of the first cover 211 close to the air flow opening 214 and arranging the second flange 213 on the outer peripheral edge of the first cover 211, the sealing cooperation between the first flange 212 and the second flange 213 and the volute body 1 can be facilitated, and at the same time, the first muffler cavity 23 can have a larger space, thereby ensuring the noise reduction effect of the first muffler cavity 23.

[0076] Further, the first sound absorbing material piece 24 is located between the first flange 212 and the second flange 213. By arranging the first sound absorbing material piece 24 between the first flange 212 and the second flange 213 on the first sound absorbing cover 21, the first sound absorbing material piece 24 can be filled in the first sound absorbing cavity 23, so that the first sound absorbing material piece 24 filled in the first sound absorbing cavity 23 is limited by the first flange 212 and the second flange 213, and after the noise enters the first sound absorbing cavity 23 of the first sound absorbing cover 21 through the first sound absorbing hole structure 141, the first sound absorbing material piece 24 can absorb and block the noise transmitted from the first sound absorbing hole material, thereby achieving noise reduction effects such as sound absorption and sound absorbing, and at the same time, it can improve the space utilization rate inside the whole machine.

[0077] Reference Fig. 9 According to some embodiments of the present invention, the flange height w1 of the first flange 212 is greater than 2 mm. For example, the flange height w1 of the first flange 212 may be 2.5 mm, 3 mm, 4 mm, etc. If the flange height w1 of the first flange 212 is less than or equal to 2 mm, the flange height w1 of the first flange 212 will be smaller, so that the matching area between the first flange 212 and the volute body 1 is smaller, and the sealing effect between the first flange 212 and the volute body 1 cannot be guaranteed. By setting the flange height w1 of the first flange 212 to be greater than 2 mm, the sealing effect between the first flange 212 and the volute body 1 can be guaranteed.

[0078] Reference Fig. 9 According to some embodiments of the present invention, the flange height w2 of the second flange 213 is greater than 2 mm. For example, the flange height w2 of the second flange 213 may be 2.5 mm, 3 mm, 4 mm, etc. If the flange height w2 of the second flange 213 is less than or equal to 2 mm, the flange height w2 of the second flange 213 will be smaller, so that the matching area between the second flange 213 and the volute body 1 is smaller, and the sealing effect between the second flange 213 and the volute body 1 cannot be guaranteed. By setting the flange height w2 of the second flange 213 to be greater than 2 mm, the sealing effect between the second flange 213 and the volute body 1 can be guaranteed.

[0079] Reference Fig. 9 According to some embodiments of the present invention, the flange height w1 of the first flange 212 is greater than 2 mm, and the flange height w2 of the second flange 213 is greater than 2 mm. For example, the flange height w1 of the first flange 212 can be 2.5 mm, 3 mm, 4 mm, etc., and the flange height w2 of the second flange 213 can be 2.5 mm, 3 mm, 4 mm, etc. If the flange height w1 of the first flange 212 and the flange height w2 of the second flange 213 are less than or equal to 2 mm, the flange heights of the first flange 212 and the second flange 213 will be smaller, so that the matching area between the first flange 212 and the second flange 213 and the volute body 1 is smaller, so that the sealing effect between the first flange 212 and the second flange 213 and the volute body 1 cannot be guaranteed. By setting the flange height w1 of the first flange 212 and the flange height w2 of the second flange 213 to be greater than 2 mm, the sealing effect between the first flange 212 and the second flange 213 and the volute body 1 can be ensured.

[0080] Reference Figure 1 According to some embodiments of the utility model, the air duct volute 100 includes a first fastener 3, and the first fastener 3 is penetrated through the first cover 211, the first sound absorbing material 24 and the volute body 1. By setting the first fastener 3 to penetrate the first cover 211, the first sound absorbing material and the volute body 1, the first cover 211 and the first sound absorbing material 24 can be fixed on the volute body 1, and at the same time, the sealing of the first cover 211 can be ensured, thereby ensuring the noise reduction effect of the first silencer cover 21 on the volute body 1.

[0081] Reference Figure 4 According to some embodiments of the present invention, the second silencing cavity 25 is filled with a second sound absorbing material 26. The second sound absorbing material 26 is filled in the second silencing cavity 25. After the noise generated by the motor mounting portion 13 enters the second silencing cavity 25, the noise in the second silencing cavity 25 can be absorbed by the second sound absorbing material 26, thereby achieving noise reduction effects such as sound absorption and noise reduction.

[0082] Optionally, the second sound absorbing material piece 26 may be a sponge material, a flannel material or the like.

[0083] Optionally, the second sound absorbing material piece 26 may be manufactured in the shape of the second sound absorbing cover 22 , so that the assembly between the second sound absorbing cover 22 and the second sound absorbing material piece 26 is more convenient.

[0084] Reference Figure 8According to some embodiments of the present invention, part of the second sound absorbing material piece 26 is accommodated in the second sound absorbing hole structure 142 to block the second sound absorbing hole structure 142, thereby avoiding air leakage at the position of the second sound absorbing hole structure 142. By setting the second sound absorbing material piece 26 to fill the second sound absorbing cavity 25 and partially accommodate it in the second sound absorbing hole structure 142, the noise generated by the motor mounting portion 13 can enter the second sound absorbing material piece 26 of the second sound absorbing cavity 25 through the second sound absorbing hole structure 142, and the second sound absorbing material piece 26 can absorb and block the noise transmitted from the second sound absorbing hole structure 142, thereby achieving noise reduction effects such as sound absorption and sound silencing.

[0085] Reference Figure 4 According to some embodiments of the present invention, the thickness of the second sound absorbing material piece 26 in the axial direction of the volute body 1 is greater than the depth of the second muffler cavity 25 in the axial direction of the volute body 1. Optionally, the thickness y2 of the second sound absorbing material piece 26 can be slightly greater than the depth h2 of the second muffler cavity 25 in the axial direction of the volute body 1, and the compressibility of the second sound absorbing material piece 26 itself can ensure the sealing effect, thereby ensuring the noise reduction effect while avoiding the air leakage at the position of the second muffler hole structure 142.

[0086] Optionally, the difference between the thickness y2 of the second sound absorbing material piece 26 in the axial direction of the volute body 1 and the depth h2 of the second muffler cavity 25 in the axial direction of the volute body 1 is in the range of 1 to 10 mm. For example, the difference between the thickness y2 of the second sound absorbing material piece 26 and the depth h2 of the second sound absorbing cavity 25 in the axial direction of the volute body 1 can be 1 mm, 3 mm, 5 mm, 10 mm, etc. If the difference between the thickness y2 of the second sound absorbing material piece 26 and the depth h2 of the second sound absorbing cavity 25 in the axial direction of the volute body 1 is less than 1 mm, the thickness y2 of the second sound absorbing material piece 26 will be smaller, resulting in a poor sealing effect of the second sound absorbing cavity 25; if the difference between the thickness y2 of the second sound absorbing material piece 26 and the depth h2 of the second sound absorbing cavity 25 in the axial direction of the volute body 1 is greater than 10 mm, the thickness y2 of the second sound absorbing material piece 26 will be larger, occupying a larger space. In the case of limited assembly space, the space of the second sound absorbing cavity 25 will also be smaller, thereby affecting the noise reduction effect of the second sound absorbing cover 22 on the motor mounting portion 13.

[0087] By setting the difference between the thickness y2 of the second sound absorbing material piece 26 in the axial direction of the volute body 1 and the depth h2 of the second silencer chamber 25 in the axial direction of the volute body 1 to 1-10 mm, the sealing effect can be ensured, thereby ensuring the noise reduction effect while avoiding air leakage in the second silencer chamber 25.

[0088] Reference Figure 2According to some embodiments of the present invention, a clearance opening 224 for avoiding the motor mounting portion 13 is formed on the second muffler cover 22. The clearance opening 224 is formed on the second muffler cover 22, and can provide a clearance for the motor mounting portion 13.

[0089] Reference Figure 8 , wherein the second sound absorbing material piece 26 surrounds the outer peripheral side of the motor mounting portion 13. The second sound absorbing material piece 26 can be coated on the outer peripheral side of the motor mounting portion 13, and the noise generated by the motor mounting portion 13 can enter the second sound absorbing material piece 26 of the second sound absorbing cavity 25 through the second sound absorbing hole structure 142. The second sound absorbing material piece 26 can absorb the noise transmitted from the second sound absorbing hole structure 142, thereby achieving noise reduction effects such as sound absorption and sound silencing.

[0090] Reference Figure 7 and Figure 8 According to some embodiments of the utility model, the second silencer cover 22 includes a second cover 221, a third flange 222 and a fourth flange 223. The third flange 222 and the fourth flange 223 can improve the overall structural strength of the second silencer cover 22 to a certain extent. The third flange 222 and the fourth flange 223 are both connected to the side of the second cover 221 facing the volute body 1, and the third flange 222 surrounds the outer peripheral side of the motor mounting part 13 and is sealed with the outer peripheral surface of the motor mounting part 13. Through the sealing cooperation between the third flange 222 on the second silencer cover 22 and the outer peripheral surface of the motor mounting part 13, the sealing effect between the second silencer cover 22 and the outer peripheral surface of the motor mounting part 13 can be improved, and the noise entering the second silencer chamber 25 can be avoided or reduced from leaking out from the cooperation between the second silencer cover 22 and the outer peripheral surface of the motor mounting part 13, thereby further improving the noise reduction effect.

[0091] In addition, the fourth flange 223 is connected to the outer periphery of the second cover 221. By arranging the third flange 222 around the outer periphery of the second cover 221 close to the motor mounting portion 13 and arranging the fourth flange 223 on the outer periphery of the second cover 221, the sealing cooperation between the third flange 222 and the fourth flange 223 and the volute body 1 can be facilitated. At the same time, the second silencer chamber 25 can have a larger space, thereby ensuring the noise reduction effect of the second silencer chamber 25.

[0092] Further, the second sound absorbing material piece 26 is located between the third flange 222 and the fourth flange 223. By arranging the second sound absorbing material piece 26 between the third flange 222 and the fourth flange 223 on the second sound absorbing cover 22, the second sound absorbing material piece 26 can be filled in the second sound absorbing cavity 25, so that the second sound absorbing material piece 26 filled in the second sound absorbing cavity 25 is limited by the third flange 222 and the fourth flange 223, and the noise generated by the motor mounting portion 13 can enter the second sound absorbing cavity 25 of the second sound absorbing cover 22 through the second sound absorbing hole structure 142, and the second sound absorbing material piece 26 can absorb and block the noise transmitted from the second sound absorbing hole material, thereby achieving noise reduction effects such as sound absorption and sound absorbing, and at the same time, it can improve the space utilization rate inside the whole machine.

[0093] According to some embodiments of the utility model, a fifth flange 16 protruding toward the second cover 221 is formed on the volute body 1, and the fifth flange 16 is sealed with the fourth flange 223. Through the sealing cooperation between the fourth flange 223 on the second silencer cover 22 toward the volute body 1 and the fifth flange 16 on the volute body 1 protruding toward the second cover 221, the sealing effect between the second silencer cover 22 and the volute body 1 can be improved, and the noise entering the second silencer cavity 25 can be avoided or reduced from leaking out from the matching point between the second silencer cover 22 and the volute body 1, thereby further improving the noise reduction effect. In addition, it can also reduce or avoid the airflow entering the second silencer cavity 25 of the second silencer cover 22 through the second silencer hole structure 142, and leaking from the matching point between the second silencer cover 22 and the volute body 1 to cause air volume loss, thereby ensuring that the noise reduction of the volute body 1 is achieved while reducing the air volume impact on the volute body 1.

[0094] Reference Figure 14-16 According to some embodiments of the present invention, the flange height w3 of the third flange 222 is greater than 2 mm. For example, the flange height w3 of the third flange 222 may be 2.5 mm, 3 mm, 4 mm, etc. If the flange height w3 of the third flange 222 is less than or equal to 2 mm, the flange height w3 of the third flange 222 will be smaller, so that the matching area between the third flange 222 and the outer peripheral surface of the motor mounting portion 13 is smaller, and the sealing effect between the third flange 222 and the outer peripheral surface of the motor mounting portion 13 cannot be guaranteed. By setting the flange height w3 of the third flange 222 to be greater than 2 mm, the sealing effect between the third flange 222 and the outer peripheral surface of the motor mounting portion 13 can be guaranteed.

[0095] Reference Figure 14-16According to some embodiments of the present invention, the flange height w4 of the fourth flange 223 is greater than 2 mm. For example, the flange height w4 of the fourth flange 223 may be 2.5 mm, 3 mm, 4 mm, etc. If the flange height w4 of the fourth flange 223 is less than or equal to 2 mm, the flange height w4 of the fourth flange 223 will be smaller, so that the matching area between the fourth flange 223 and the fifth flange 16 is smaller, and the sealing effect between the fourth flange 223 and the fifth flange 16 cannot be guaranteed. By setting the flange height w4 of the fourth flange 223 to be greater than 2 mm, the sealing effect between the fourth flange 223 and the fifth flange 16 can be guaranteed.

[0096] Reference Figure 7 According to some embodiments of the present invention, the flange height w5 of the fifth flange 16 is greater than 2 mm. For example, the flange height w5 of the fifth flange 16 may be 2.5 mm, 3 mm, 4 mm, etc. If the flange height w5 of the fifth flange 16 is less than or equal to 2 mm, the flange height w5 of the fifth flange 16 will be smaller, so that the matching area between the fourth flange 223 and the fifth flange 16 is smaller, and the sealing effect between the fourth flange 223 and the fifth flange 16 cannot be guaranteed. By setting the flange height w5 of the fifth flange 16 to be greater than 2 mm, the sealing effect between the fourth flange 223 and the fifth flange 16 can be guaranteed.

[0097] Reference Figure 7 , Figure 14-16 According to some embodiments of the present invention, the flange height w3 of the third flange 222 is greater than 2 mm, and the flange height w4 of the fourth flange 223 is greater than 2 mm. For example, the flange height w3 of the third flange 222 can be 2.5 mm, 3 mm, 4 mm, etc., and the flange height w4 of the fourth flange 223 can be 2.5 mm, 3 mm, 4 mm, etc. If the flange height w3 of the third flange 222 and the flange height w4 of the fourth flange 223 are less than or equal to 2 mm, the flange height w3 of the third flange 222 and the flange height w4 of the fourth flange 223 will be smaller, so that the matching area between the third flange 222 and the outer peripheral surface of the motor mounting portion 13 and the matching area between the fourth flange 223 and the fifth flange 16 are smaller, so that the sealing effect between the third flange 222 and the outer peripheral surface of the motor mounting portion 13 and between the fourth flange 223 and the fifth flange 16 cannot be guaranteed.

[0098] By setting the flange height w3 of the third flange 222 and the flange height w4 of the fourth flange 223 to be greater than 2 mm, the sealing effect between the third flange 222 and the outer peripheral surface of the motor mounting portion 13 and between the fourth flange 223 and the fifth flange 16 can be ensured.

[0099] Reference Figure 7 , Figure 14-16 According to some embodiments of the present invention, the flange height w3 of the third flange 222 is greater than 2 mm, and the flange height w5 of the fifth flange 16 is greater than 2 mm. For example, the flange height w3 of the third flange 222 can be 2.5 mm, 3 mm, 4 mm, etc., and the flange height w5 of the fifth flange 16 can be 2.5 mm, 3 mm, 4 mm, etc. If the flange height w3 of the third flange 222 and the flange height w5 of the fifth flange 16 are less than or equal to 2 mm, the flange height w3 of the third flange 222 and the flange height w5 of the fifth flange 16 will be smaller, so that the matching area between the third flange 222 and the outer peripheral surface of the motor mounting portion 13 and the matching area between the fourth flange 223 and the fifth flange 16 are smaller, so that the sealing effect between the third flange 222 and the outer peripheral surface of the motor mounting portion 13 and between the fourth flange 223 and the fifth flange 16 cannot be guaranteed.

[0100] By setting the flange height w3 of the third flange 222 and the flange height w5 of the fifth flange 16 to be greater than 2 mm, the sealing effect between the third flange 222 and the outer peripheral surface of the motor mounting portion 13 and between the fourth flange 223 and the fifth flange 16 can be ensured.

[0101] Reference Figure 7 , Figure 14-16 According to some embodiments of the present invention, the flange height w4 of the fourth flange 223 is greater than 2 mm, and the flange height w5 of the fifth flange 16 is greater than 2 mm. For example, the flange height w4 of the fourth flange 223 can be 2.5 mm, 3 mm, 4 mm, etc., and the flange height w5 of the fifth flange 16 can be 2.5 mm, 3 mm, 4 mm, etc. If the flange height w4 of the fourth flange 223 and the flange height w5 of the fifth flange 16 are less than or equal to 2 mm, the flange height w4 of the fourth flange 223 and the flange height w5 of the fifth flange 16 will be smaller, so that the matching area between the fourth flange 223 and the fifth flange 16 is smaller, and the sealing effect between the fourth flange 223 and the fifth flange 16 cannot be guaranteed.

[0102] By setting the flange height w4 of the fourth flange 223 and the flange height w5 of the fifth flange 16 to be greater than 2 mm, the sealing effect between the fourth flange 223 and the fifth flange 16 can be ensured.

[0103] Reference Figure 7 , Figure 14-16According to some embodiments of the present invention, the flange height w3 of the third flange 222 is greater than 2 mm, the flange height w4 of the fourth flange 223 is greater than 2 mm, and the flange height w5 of the fifth flange 16 is greater than 2 mm. For example, the flange height w3 of the third flange 222 can be 2.5mm, 3mm, 4mm, etc., the flange height w4 of the fourth flange 223 can be 2.5mm, 3mm, 4mm, etc., and the flange height w5 of the fifth flange 16 can be 2.5mm, 3mm, 4mm, etc. If the flange height w3 of the third flange 222, the flange height w4 of the fourth flange 223 and the flange height w5 of the fifth flange 16 are less than or equal to 2mm, the flange height w3 of the third flange 222, the flange height w4 of the fourth flange 223 and the flange height w5 of the fifth flange 16 will be smaller, so that the fitting area between the third flange 222 and the outer peripheral surface of the motor mounting part 13 and the fitting area between the fourth flange 223 and the fifth flange 16 are smaller, thereby failing to ensure the sealing effect between the third flange 222 and the outer peripheral surface of the motor mounting part 13 and between the fourth flange 223 and the fifth flange 16.

[0104] By setting the flange height w3 of the third flange 222, the flange height w4 of the fourth flange 223 and the flange height w5 of the fifth flange 16 to be greater than 2 mm, the sealing effect between the third flange 222 and the outer peripheral surface of the motor mounting part 13 and between the fourth flange 223 and the fifth flange 16 can be ensured.

[0105] Reference Figure 7 , Figure 14-16 According to some embodiments of the present invention, the fifth flange 16 is located on the outer peripheral side of the fourth flange 223. It is convenient to seal the fourth flange 223 with the fifth flange 16, and at the same time, it can make the second muffler cavity 25 have a larger space, thereby ensuring the noise reduction effect of the second muffler cavity 25.

[0106] Reference Figure 7According to some embodiments of the utility model, the outer peripheral wall of the fifth flange 16 is provided with a first fixing column 161, and the second cover 221 is provided with a first connecting lug 225, and the first connecting lug 225 and the first fixing column 161 are connected by a second fastener 4. By passing the second fastener 4 through the first connecting lug 225 on the second cover 221 and the first fixing column 161 on the outer peripheral wall of the corresponding fifth flange 16, the second muffler cover 22 can be fixed to the volute body 1, and the connection process is relatively simple. At the same time, this connection method can facilitate the disassembly of the second muffler cover 22. In addition, the first connecting lug 225 is provided on the second muffler cover 22 and the first fixing column 161 is provided on the volute body 1. During the assembly process of the volute body 1 and the second muffler cover 22, the first connecting lug 225 and the corresponding first fixing column 161 can play a positioning role, thereby facilitating the assembly of the volute body 1 and the second muffler cover 22.

[0107] Reference Figure 7 According to some embodiments of the utility model, a second fixing column 131 is provided on the motor mounting portion 13, a second connecting lug 226 is provided on the second cover 221, and the second connecting lug 226 is connected to the second fixing column 131 by a third fastener 5. By passing the third fastener 5 through the second connecting lug 226 on the second cover 221 and the corresponding second fixing column 131 on the motor mounting portion 13, the second silencer cover 22 can be fixed to the volute body 1, and the connection process is relatively simple. At the same time, this connection method can facilitate the disassembly of the second silencer cover 22. In addition, the second connecting lug 226 is provided on the second silencer cover 22 and the second fixing column 131 is provided on the volute body 1. During the assembly process of the volute body 1 and the second silencer cover 22, the second connecting lug 226 and the corresponding second fixing column 131 can play a positioning role, thereby facilitating the assembly of the volute body 1 and the second silencer cover 22.

[0108] Reference Figure 4 According to some embodiments of the utility model, the volute body 1 includes a detachably connected volute body 17 and an air inlet cover plate 18, one axial side of the volute body 17 has a motor mounting portion 13 and the other axial side of the volute body 17 is open, the air inlet cover plate 18 is covered on the open side of the volute body 17, and an air flow inlet 111 is formed on the air inlet cover plate 18. By setting the detachability between the volute body 17 and the air inlet cover plate 18, the wind wheel installed in the volute body 17 can be easily disassembled and assembled, thereby facilitating the maintenance and replacement of the wind wheel.

[0109] Among them, the first muffler hole structure 141 is formed on the air inlet cover plate 18. The first muffler hole structure 141 is arranged on the air inlet cover plate 18, so that the noise generated at the airflow inlet 111 can be transmitted to the first muffler cavity 23 through the first muffler hole structure 141, which can ensure the noise reduction effect at the airflow inlet 111. The second muffler hole structure 142 is formed in the volute body 17. The volute body 17 has a large space, which can facilitate the arrangement of the second muffler hole structure 142.

[0110] Refer to the following Figure 1-Figure 18 Describe the air conditioner according to some specific embodiments of the utility model

[0111] Reference Figure 1-Figure 18 In this embodiment, the air conditioner includes an air handling device, the air handling device includes an air duct volute 100 and a wind wheel, the air duct volute 100 includes a volute body 1 and a silencer cover 2, and the air duct volute 100 has an air flow inlet 111 and an air flow outlet 121.

[0112] The volute body 1 includes a volute portion 11 and an air outlet portion 12. The volute portion 11 is used to accommodate a wind wheel and has an airflow inlet 111. The air outlet portion 12 has an airflow outlet 121. A first silencer hole structure 141 is formed on the volute portion 11 and the air outlet portion 12. The first silencer hole structure 141 surrounds the outer peripheral side of the airflow inlet 111 and penetrates the wall thickness of the volute body 1. A fifth flange 16 is formed on the volute body 1. A wind wheel cavity for accommodating a wind wheel is defined in the volute portion 11. An airflow outlet 121 connected to the wind wheel cavity is formed on the volute portion 11. The air outlet portion 12 defines an air outlet channel connected to the wind wheel cavity, and the air outlet channel has an airflow outlet 121.

[0113] The air duct volute 100 is connected by a volute body 1 and an air inlet cover plate 18 through fasteners. A connecting hole is provided on the air inlet cover plate 18, and a connecting hole is provided at a corresponding position on the air inlet side of the volute body 1. The connection operation between the volute body 1 and the air inlet cover plate 18 can be completed by inserting the first fastener 3 through the connecting hole of the air inlet cover plate 18 and the corresponding connecting hole of the volute body 1.

[0114] The first muffler cover 21 is disposed around the first muffler hole structure 141 and defines a first muffler cavity 23 between the first muffler cover 21 and the volute body 1. A first sound absorbing material is disposed in the first muffler cavity 23. The first sound absorbing material is sandwiched between the volute body 1 and the first muffler cover 21, and the first sound absorbing material covers the first muffler hole structure 141. The first muffler cover 21 includes a first cover 211, a first flange 212, and a second flange 213. The first flange 212 surrounds the outer peripheral side of the air flow opening 214, and the second flange 213 is connected to the outer peripheral edge of the first cover 211. The first flange 212 and the second flange 213 are in abutment and sealed cooperation with the volute body 1.

[0115] The air duct volute 100 includes a first fastener 3 , which is sequentially inserted into the first cover 211 , the first sound absorbing material piece 24 and the volute body 1 , thereby completing the connection between the first silencer cover 21 and the volute body 1 .

[0116] The volute body 1 includes a motor mounting portion 13, the motor mounting portion 13 and the airflow inlet 111 are respectively located on both sides of the axial direction of the volute body 1, and a second muffler hole structure 142 is formed around the outer peripheral side of the motor mounting portion 13 and through the wall thickness of the volute body 1. The second muffler cover 22 is arranged around the second muffler hole and defines a second muffler cavity 25 between the volute body 1, and a second sound absorbing material is arranged in the second muffler cavity 25, the second sound absorbing material is sandwiched between the volute body 1 and the second muffler cover 22, and the second sound absorbing material is coated on the second muffler hole structure 142. The second silencer cover 22 includes a second cover 221, a third flange 222 and a fourth flange 223. The third flange 222 surrounds the outer peripheral side of the motor mounting portion 13 and is sealed with the outer peripheral surface of the motor mounting portion 13. The fourth flange 223 is connected to the outer peripheral edge of the second cover 221. The third flange 222 and the volute body 1 are abutted and sealed. The fourth flange 223 and the fifth flange 16 on the volute body 1 toward the second cover 221 are abutted and sealed.

[0117] The air duct volute 100 includes a second fastener 4, a first fixing column 161 is provided on the fifth flange 16, a first connecting lug 225 is provided on the second muffler cover 22, and the first connecting lug 225 is connected to the first fixing column 161 through the second fastener 4. The second fastener 4 is sequentially inserted into the second cover 221, the second sound absorbing material piece 26 and the first fixing column 161, so as to complete the connection between the second muffler cover 22 and the volute body 1.

[0118] The air duct volute 100 includes a third fastener 5, which is provided with a second fixing column 131, and the second muffler cover 22 is provided with a second connecting lug 226, and the second connecting lug 226 is connected to the second fixing column 131 through the third fastener 5. The third fastener 5 is sequentially inserted into the second cover 221, the second sound absorbing material piece 26 and the second fixing column 131, so as to complete the connection between the second muffler cover 22 and the volute body 1.

[0119] For example, when the air duct volute 100 is working, the wind wheel in the volute part 11 starts to run at a high speed, sucking the external airflow into the air duct volute 100 through the airflow inlet 111, and collecting the sucked airflow in the air outlet channel, and finally accelerating the blowing at the airflow outlet 121. In this process, the noise generated by the airflow at the airflow inlet 111 is transmitted to the first sound-absorbing material piece 24 through the first silencer hole structure 141, and the first sound-absorbing material piece 24 can absorb the noise transmitted from the first silencer hole, and then transmit to the motor side, and the noise is transmitted to the second sound-absorbing material piece 26 through the second silencer hole structure 142, and the second sound-absorbing material piece 26 can absorb the noise transmitted from the second silencer hole, thereby achieving the effect of reducing noise. As a result, the air duct volute 100 has less noise during operation.

[0120] In the description of this specification, the description with reference to the terms "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 the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0121] 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 spirit 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: The air treatment device comprises an air duct volute and a wind wheel, and the air duct volute comprises: A volute body, having an airflow inlet and an airflow outlet, the volute body including a motor mounting portion, the motor mounting portion and the airflow inlet being located on both sides of the axial direction of the volute body, a muffler hole structure being formed on the volute body, the muffler hole structure including at least one of a first muffler hole structure and a second muffler hole structure, the first muffler hole structure surrounding the outer circumference of the airflow inlet and penetrating the wall thickness of the volute body, the second muffler hole structure surrounding the outer circumference of the motor mounting portion and penetrating the wall thickness of the volute body, the wind wheel being arranged in the volute body; A silencer cover, the silencer cover includes at least one of a first silencer cover and a second silencer cover, the first silencer cover is arranged around the first silencer hole structure and defines a first silencer cavity between the first silencer cover and the volute body, the first silencer cover is formed with an air flow opening opposite to and connected to the air flow inlet, and the second silencer cover is arranged around the second silencer hole structure and defines a second silencer cavity between the first silencer cover and the volute body.

2. The air conditioner according to claim 1, characterized in that: The volute body includes a volute portion and an air outlet portion, the volute portion is used to accommodate the wind wheel and has the airflow inlet, the air outlet portion has the airflow outlet, and the first silencer hole structure is formed in the volute portion and the air outlet portion.

3. The air conditioner according to claim 1, characterized in that: The first silencer cover is detachably connected to the volute body; and / or the second silencer cover is detachably connected to the volute body.

4. The air conditioner according to claim 1, characterized in that: The first sound-absorbing hole structure and the second sound-absorbing hole structure both include a plurality of through holes arranged at intervals, and the equivalent diameter range of the through holes is 1.5 to 10 mm.

5. The air conditioner according to claim 1, characterized in that: The first silencing cavity is filled with a first sound absorbing material piece, and the first sound absorbing material piece surrounds the outer peripheral side of the airflow inlet.

6. The air conditioner according to claim 5, characterized in that: A portion of the first sound absorbing material piece is accommodated in the first sound absorbing hole structure to block the first sound absorbing hole.

7. The air conditioner according to claim 5, characterized in that: The thickness of the first sound-absorbing material piece in the axial direction of the volute body is greater than the depth of the first silencer cavity in the axial direction of the volute body; the difference between the thickness of the first sound-absorbing material piece in the axial direction of the volute body and the depth of the first silencer cavity in the axial direction of the volute body is in the range of 1 to 10 mm.

8. The air conditioner according to claim 5, characterized in that: The first silencer cover includes a first cover, a first flange and a second flange, the first flange and the second flange are both connected to the side of the first cover facing the volute body and are both sealed with the volute body, the first flange surrounds the outer peripheral side of the air flow opening, the second flange is connected to the outer peripheral edge of the first cover, and the first sound-absorbing material piece is located between the first flange and the second flange.

9. The air conditioner according to claim 1, characterized in that: The second silencing cavity is filled with a second sound absorbing material.

10. The air conditioner according to claim 9, characterized in that: A portion of the second sound absorbing material piece is accommodated in the second sound absorbing hole structure to block the second sound absorbing hole structure.

11. The air conditioner according to claim 9, characterized in that: The thickness of the second sound-absorbing material piece in the axial direction of the volute body is greater than the depth of the second silencer cavity in the axial direction of the volute body; the difference between the thickness of the second sound-absorbing material piece in the axial direction of the volute body and the depth of the second silencer cavity in the axial direction of the volute body is in the range of 1 to 10 mm.

12. The air conditioner according to claim 9, characterized in that: The second silencer cover is formed with an escape opening for escaping the motor mounting portion, and the second sound absorbing material piece surrounds the outer peripheral side of the motor mounting portion.

13. The air conditioner according to claim 12, characterized in that: The second silencer cover includes a second cover, a third flange and a fourth flange, the third flange and the fourth flange are both connected to the side of the second cover facing the volute body, the third flange surrounds the outer peripheral side of the motor mounting portion and is sealed with the outer peripheral surface of the motor mounting portion, the fourth flange is connected to the outer peripheral edge of the second cover, the second sound-absorbing material piece is located between the third flange and the fourth flange, and a fifth flange protruding toward the second cover is formed on the volute body, and the fifth flange is sealed with the fourth flange.

14. The air conditioner according to claim 13, characterized in that: The fifth flange is located on the outer peripheral side of the fourth flange, the outer peripheral wall of the fifth flange is provided with a first fixing column, the second cover is provided with a first connecting lug, and the first connecting lug is connected to the first fixing column through a second fastener; the motor mounting part is provided with a second fixing column, the second cover is provided with a second connecting lug, and the second connecting lug is connected to the second fixing column through a third fastener.

15. The air conditioner according to any one of claims 1 to 14, characterized in that: The volute body includes a detachably connected volute body and an air inlet cover plate, the volute body has the motor mounting portion on one axial side and the volute body is open on the other axial side, the air inlet cover plate is covered on the open side of the volute body, the air flow inlet is formed on the air inlet cover plate, the first silencer hole structure is formed on the air inlet cover plate, and the second silencer hole structure is formed on the volute body.

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