Air guide assembly, outdoor unit and air conditioner

Abstract

The utility model provides an air guide assembly, an outdoor unit and an air conditioner, the air guide assembly comprises an air guide ring, an air passing channel is defined by the inner circumferential wall of the air guide ring, a noise reduction cavity set is formed in the air guide ring, the noise reduction cavity set comprises a plurality of sound absorption cavities distributed in the circumferential direction of the air guide ring at intervals, each sound absorption cavity comprises a cavity body and a through hole, and the through holes are formed in the cavity bodies; the through hole is communicated between the cavity and the air passing channel; wherein the shape of at least one sound absorption cavity is different from the shapes of other sound absorption cavities. According to the air guide assembly provided by the embodiment of the invention, the sound wave energy of the noise of the wind wheel can be weakened by utilizing the noise reduction cavity group, the transmission of the noise generated by the operation of the wind wheel is hindered, and the airflow in the air passing channel is shunted, so that the vortex generated when the airflow impacts the wind wheel is reduced, the vortex noise is reduced, and the overall operation noise of the outdoor unit is reduced.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of air conditioning equipment, and particularly relates to a wind guide assembly, an outdoor unit and an air conditioner. BACKGROUND

[0002] In an air conditioning equipment, an outdoor unit is usually configured with a fan so as to accelerate the heat exchange efficiency of a heat exchanger by using the airflow generated by the fan operation. However, the noise generated by the fan operation also seriously increases the overall operation noise of the outdoor unit. In order to reduce the noise of the fan, a wind guide ring is arranged around the fan wheel of some outdoor units, but the noise reduction effect of the wind guide ring in the related art is poor. CONTENT OF THE UTILITY MODEL

[0003] The present disclosure aims to at least solve one of the problems in the prior art or related art.

[0004] Therefore, according to a first aspect of an embodiment of the present disclosure, a wind guide assembly is provided, comprising:

[0005] The wind guide ring has an inner circumferential wall surrounding a wind passage, and the wind guide ring forms a noise reduction cavity group, which comprises a plurality of sound absorption cavities arranged along the circumferential direction of the wind guide ring, and each sound absorption cavity comprises a cavity and a through hole, and the through hole is connected between the cavity and the wind passage.

[0006] In one possible implementation, the shape of at least one sound absorption cavity is different from that of the other sound absorption cavities.

[0007] In one possible implementation, one end of the through hole is located at the inner circumferential wall of the wind guide ring, and the other end is located in the cavity.

[0008] In one possible implementation, the volume of the cavity is greater than or equal to 500mm 3 and less than or equal to 1500mm 3 ; and / or

[0009] The diameter of the through hole is greater than or equal to 1mm and less than or equal to 5mm; and / or

[0010] The cross-sectional area of the through hole is greater than or equal to 0.78mm 2 and less than or equal to 20mm 2 ; and / or

[0011] The length of the through hole is greater than or equal to 10mm and less than or equal to 20mm.

[0012] In one possible implementation, the number of the noise reduction cavity groups is multiple, and at least part of the noise reduction cavity groups are arranged along the guide direction of the wind passage; and / or

[0013] The number of the noise reduction cavity groups is multiple, and at least part of the noise reduction cavity groups are arranged along the radial direction of the air guide ring, and along the radial direction of the air guide ring, the sound absorption cavities of adjacent two noise reduction cavity groups are communicated.

[0014] In an implementation, the interval distance between the through holes of adjacent two noise reduction cavity groups along the air passing direction of the air passing channel is greater than or equal to 5 mm and less than or equal to 15 mm.

[0015] In an implementation, the interval distance between the through holes of adjacent two noise reduction cavity groups along the circumferential direction of the air guide ring is greater than or equal to 5 mm and less than or equal to 15 mm.

[0016] In an implementation, the through holes are arranged at the middle part of the cavity.

[0017] In an implementation, the wall thickness of the cavity is greater than or equal to 0.8 mm and less than or equal to 2 mm.

[0018] In an implementation, the inner circumferential wall of the air guide ring comprises a first wall segment and a second wall segment, the first wall segment and the second wall segment are arranged along the air passing direction of the air passing channel, the part of the air passing channel corresponding to the first wall segment is used for accommodating the fan wheel of the outdoor unit, and the part of the air passing channel corresponding to the second wall segment is used for being arranged at the air inlet side of the fan wheel.

[0019] At least part of the noise reduction cavity groups are arranged corresponding to the first wall segment.

[0020] In an implementation, the air guide assembly further comprises:

[0021] The connecting piece is arranged on the outer circumferential wall of the air guide ring, and is used for connecting the shell assembly of the outdoor unit.

[0022] According to a second aspect of the embodiments of the present disclosure, an outdoor unit is provided, comprising:

[0023] The shell assembly is formed with an air inlet;

[0024] The air guide assembly as proposed in any one of the above first aspect is arranged on the shell assembly, and the air passing channel is communicated with the air inlet.

[0025] According to a third aspect of the embodiments of the present disclosure, an air conditioner is provided, comprising:

[0026] The indoor unit;

[0027] The outdoor unit as proposed in any one of the above second aspect is connected to the indoor unit.

[0028] Compared with the prior art, the present disclosure at least includes the following beneficial effects: the air guide assembly provided by the embodiments of the present disclosure includes an air guide ring, the air guide ring has a wind passage, in actual application, the air guide ring can be arranged around the fan wheel of the outdoor unit, and the wind passage can be connected to the air inlet of the outdoor unit shell assembly, so that the air guide ring can guide the air outlet of the fan wheel when the fan wheel rotates, which is conducive to ensuring the air volume and heat exchange efficiency of the outdoor unit; the air guide ring forms a noise reduction cavity group, the noise reduction cavity group includes a sound absorption cavity, the sound absorption cavity includes a cavity and a through hole connected between the cavity and the wind passage, so that the sound absorption cavity can receive the sound waves generated by the fan wheel during operation and part of the airflow in the wind passage, based on this, on the one hand, the gas in the sound absorption cavity can vibrate under the excitation of the sound waves generated by the fan wheel during operation, so that the energy of the sound waves is converted into heat energy through the viscous friction of the gas in the sound absorption cavity, thereby weakening the energy of the sound waves and hindering the propagation of the noise generated by the fan wheel, on the other hand, when there is airflow in the wind passage, part of the airflow can flow into the aforementioned noise reduction cavity, so that the noise reduction assembly can also shunt the airflow in the wind passage, which is conducive to reducing the vortex generated by the airflow impacting the fan wheel, thereby reducing the vortex noise; by setting the shape of at least one sound absorption cavity to be different from that of the other sound absorption cavities, the natural frequency of at least one sound absorption cavity can be made different from that of the other sound absorption cavities, accordingly, the frequency at which at least one sound absorption cavity resonates under the excitation of incident sound waves can be made different from that of the other sound absorption cavities, thereby expanding the noise reduction frequency range of the noise reduction cavity group; at the same time, the number of sound absorption cavities included in the noise reduction cavity group is multiple, and the multiple sound absorption cavities are arranged in a circumferential direction of the air guide ring, so that the noise reduction cavity group can hinder the noise emitted by the fan wheel from propagating in multiple directions, which is conducive to enhancing the hindering effect of the noise reduction cavity group on the noise propagation of the fan wheel, and can enhance the shunting effect of the noise reduction cavity group on the airflow in the wind passage, thereby further reducing the vortex noise. BRIEF DESCRIPTION OF DRAWINGS

[0029] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the illustrative implementations. The drawings are for purposes of illustration only and are not to be construed as limiting the present disclosure. Throughout the drawings, like reference numerals are used to refer to like components. In the drawings:

[0030] Figure 1 a schematic structural view of the air guide assembly of an embodiment provided by the present disclosure from a first perspective;

[0031] Figure 2 a schematic structural view of the air guide assembly of an embodiment provided by the present disclosure from a second perspective;

[0032] Figure 3 a schematic sectional view of the air guide assembly shown in FIG. 2 along the A-A direction; Figure 1 ​

[0033] Figure 4 for Figure 3 A schematic enlarged view of a portion of region B in the middle;

[0034] Figure 5 for Figure 4 A schematic enlarged view of a portion of region D in the middle;

[0035] Figure 6 for Figure 1 Another schematic cross-sectional view of the air guide assembly along the AA direction is shown in the figure;

[0036] Figure 7 for Figure 6 A schematic enlarged view of a portion of region E in the middle;

[0037] Figure 8 for Figure 3 A schematic cross-sectional view of the air guide assembly along the CC direction is shown in the figure.

[0038] Figure 9 for Figure 8 A schematic enlarged view of a portion of region F in the middle;

[0039] Figure 10 This is a schematic exploded view of an outdoor unit according to an embodiment of the present disclosure.

[0040] in, Figures 1 to 10 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0041] 100 air guide assembly;

[0042] 110 air guide ring; 120 connector;

[0043] 111 Air passage; 112 Noise reduction cavity assembly; 113 First wall section; 114 Second wall section;

[0044] 1121 Sound-absorbing cavity; 1121a Cavity body; 1121b Through hole;

[0045] 200 Wind turbine; 300 Housing assembly; 310 Housing body; 320 Panel; 400 Motor; 500 Net cover. Detailed Implementation

[0046] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0047] like Figures 1 to 10As shown, according to the first aspect of the embodiments of the present disclosure, a guide air assembly 100 is provided, comprising: a guide air ring 110, an inner peripheral wall of the guide air ring 110 surrounding a through air passage 111, and the guide air ring 110 being formed with a noise reduction cavity group 112, the noise reduction cavity group 112 comprising a plurality of sound absorption cavities 1121 arranged at intervals along the circumference of the guide air ring 110, the sound absorption cavities 1121 comprising a cavity body 1121a and a through hole 1121b, the through hole 1121b being communicated between the cavity body 1121a and the through air passage 111; wherein the shape of at least one sound absorption cavity 1121 is different from the shape of other sound absorption cavities 1121.

[0048] The air guide assembly 100 provided by the embodiments of the present disclosure comprises an air guide ring 110, the air guide ring 110 has a wind passage 111, in actual application, the air guide ring 110 can be arranged around the fan wheel 200 of the outdoor unit, and the wind passage 111 can be connected to the air port of the outdoor unit shell assembly 300, so that the air guide ring 110 can guide the air outlet of the fan wheel 200 when the fan wheel 200 rotates, which is beneficial to ensure the air volume and heat exchange efficiency of the outdoor unit. The air guide ring 110 forms a noise reduction cavity group 112, the noise reduction cavity group 112 comprises a sound absorption cavity 1121, the sound absorption cavity 1121 comprises a cavity 1121a and a through hole 1121b connected between the cavity 1121a and the wind passage 111, so that the sound absorption cavity 1121 can receive the sound wave generated when the fan wheel 200 operates and part of the airflow in the wind passage 111. Based on this, on the one hand, the gas in the sound absorption cavity 1121 can vibrate under the excitation of the sound wave generated when the fan wheel 200 operates, so that the energy of the sound wave is converted into heat energy through the viscous friction of the gas in the sound absorption cavity 1121, thereby weakening the energy of the sound wave and hindering the propagation of the noise generated by the operation of the fan wheel 200; on the other hand, when there is airflow in the wind passage 111, part of the airflow can flow into the aforementioned noise reduction cavity, so that the noise reduction assembly can also shunt the airflow in the wind passage 111, which is beneficial to reduce the vortex generated by the airflow impacting the fan wheel 200, thereby reducing the vortex noise and reducing the air outlet resistance of the fan wheel 200, and improving the fan efficiency of the outdoor unit. By setting the shape of at least one sound absorption cavity 1121 to be different from the shape of other sound absorption cavities 1121, the natural frequency of at least one sound absorption cavity 1121 can be different from the natural frequency of other sound absorption cavities 1121, accordingly, the frequency at which at least one sound absorption cavity 1121 resonates under the excitation of the incident sound wave can be different from that of other sound absorption cavities 1121, thereby expanding the noise reduction frequency range of the noise reduction cavity group 112. At the same time, the number of sound absorption cavities 1121 included in the noise reduction cavity group 112 is multiple, and the multiple sound absorption cavities 1121 are arranged in a circumferential direction of the air guide ring 110, so that the noise reduction cavity group 112 can hinder the noise emitted by the fan wheel 200 in multiple directions, which is beneficial to enhance the hindering effect of the noise reduction cavity group 112 on the noise propagation of the fan wheel 200, and can enhance the shunting effect of the noise reduction cavity group 112 on the airflow in the wind passage 111, further reducing the vortex noise.

[0049] It should be noted that the air guide assembly 100 provided by the embodiments of the present disclosure can be arranged on the shell assembly 300 of an outdoor unit of an air conditioner or used as a component of the outdoor unit in actual application. Taking the air guide assembly 100 as a component of the outdoor unit as an example, the air guide ring 110 of the air guide assembly 100 can be arranged on the shell assembly 300 of the outdoor unit and the air passage 111 is communicated with the air outlet of the shell assembly 300, and the air guide ring 110 can be arranged around the fan wheel 200 of the outdoor unit, so that the air guide ring 110 guides the air outlet of the fan wheel 200 when the fan wheel 200 rotates, and the noise reduction cavity group 112 weakens the sound energy of the noise generated when the fan wheel 200 rotates, hinders the propagation of the noise generated by the fan wheel 200, and improves the user experience of the product.

[0050] It can be understood that based on the foregoing arrangement, the sound absorption cavity 1121 can be regarded as a Helmholtz resonator, when the frequency of the incident sound wave received by the sound absorption cavity 1121 is consistent with the natural frequency of the sound absorption cavity 1121, the sound absorption cavity 1121 will resonate, accordingly, the gas vibration speed in the sound absorption cavity 1121 can reach the maximum value, the sound energy loss of the sound wave is also the most, and the noise reduction effect is stronger. The natural frequency of the sound absorption cavity 1121 substantially satisfies the following formula (1):

[0051]

[0052] In formula (1), f r is the natural frequency of the sound absorption cavity 1121, c is the speed of sound in air, S is the cross-sectional area of the through hole 1121b, l is the length of the through hole 1121b, d is the diameter of the through hole 1121b, and V is the volume of the cavity 1121a.

[0053] It can be understood that the shape of the at least one sound absorption cavity 1121 is different from the shape of the other sound absorption cavities 1121, which can be but is not limited to that the shape parameters of the cavity 1121a of the at least one sound absorption cavity 1121 are different from the shape parameters of the cavity 1121a of the other sound absorption cavities 1121; and / or the shape parameters of the through hole 1121b of the at least one sound absorption cavity 1121 are different from the shape parameters of the through hole 1121b of the other sound absorption cavities 1121. Exemplarily, the shape of the at least one sound absorption cavity 1121 is different from the shape of the other sound absorption cavities 1121, which can be but is not limited to that the volume of the cavity 1121a of the at least one sound absorption cavity 1121 is different from the volume of the cavity 1121a of the other sound absorption cavities 1121; and / or the cross-sectional area of the through hole 1121b of the at least one sound absorption cavity 1121 is different from the cross-sectional area of the through hole 1121b of the other sound absorption cavities 1121; and / or the length of the through hole 1121b of the at least one sound absorption cavity 1121 is different from the length of the through hole 1121b of the other sound absorption cavities 1121; and / or the diameter of the through hole 1121b of the at least one sound absorption cavity 1121 is different from the diameter of the through hole 1121b of the other sound absorption cavities 1121.

[0054] It can be understood that the air guide ring 110 has a substantially annular structure, and accordingly, the inner peripheral wall of the air guide ring 110, that is, the inner side surface of the air guide ring 110 in the radial direction.

[0055] It should be noted that through testing of the air guide assembly 100 provided by the embodiments of the present disclosure, the test results shown in Tables 1 and 2 are obtained. The comparative air guide assemblies described in Tables 1 and 2 are basically consistent with the air guide assembly 100 provided by the embodiments of the present disclosure in terms of the remaining structural features except that the aforementioned noise reduction cavity group 112 is not provided. It can be seen that under multiple rotational speeds of the wind wheel 200, the air guide assembly 100 provided by the embodiments of the present disclosure can ensure the air volume while achieving good noise reduction effect, and is conducive to reducing the driving power of the wind wheel 200 and saving the energy consumption of the fan.

[0056] Table 1: Air volume-power-noise test data of comparative air guide assembly under different wind wheel rotational speeds

[0057] RPM of the wind wheel Air volume (m 3 / h) Driving power (W) Noise (dB) 600 1908 27.9 42.6 700 2278 42.7 46.3 800 2654 62.5 50.2 839 2804 72.4 51.5

[0058] Table 2: Air volume-power-noise test data of air guide assembly provided by the present disclosure under different wind wheel rotational speeds

[0059] RPM of the wind wheel Air volume (m 3 / h) Driving power (W) Noise (dB) 600 1934 27.8 41.1 700 2292 42 45.3 800 2653 61.5 49 838 2801 70.8 50.5

[0060] In some feasible examples, the shapes of the plurality of sound absorption cavities 1121 of the noise reduction cavity group 112 are different from each other; that is, the shapes of the plurality of sound absorption cavities 1121 can be set to be different from each other. Based on the foregoing setting, the noise reduction frequency range of the noise reduction cavity group 112 can be further expanded, and the hindering effect of the noise reduction cavity group 112 on the noise propagation of the wind wheel 200 can be enhanced. In actual applications, the shape design of each sound absorption cavity 1121 of the noise reduction cavity group 112 can be performed in combination with the foregoing formula (1), so that each sound absorption cavity 1121 can absorb noise of different frequencies with a relatively high sound absorption coefficient, and the noise reduction cavity group 112 can absorb noise within a certain frequency range with relatively high efficiency. For example, the natural frequencies of the sound absorption cavities 1121 of the noise reduction cavity group 112 can be set to be different from each other and distributed within a frequency range greater than or equal to 60 Hz and less than or equal to 500 Hz.

[0061] As shown in Figures 3 to 9 some feasible examples, the inner peripheral wall of the air guide ring 110 is formed with a tubular structure, and the through hole 1121b is formed on the inner peripheral side of the tubular structure. Based on the foregoing setting, the length of the through hole 1121b can be adjusted by adjusting the length of the tubular structure, which is beneficial to form differences in the natural frequencies of the plurality of sound absorption cavities 1121.

[0062] As shown in Figures 1 to 9 some examples, one end of the through hole 1121b is located on the inner peripheral wall of the air guide ring 110, and the other end is located in the cavity 1121a.

[0063] In this technical solution, the two ends of the through hole 1121b can be located on the inner peripheral wall of the air guide ring 110 and in the cavity 1121a of the sound absorption cavity 1121, respectively. Based on the foregoing setting, the portion of the air guide ring 110 with the through hole 1121b can be accommodated in the cavity 1121a, which improves the structural compactness of the air guide ring 110 and reduces the influence of the noise reduction cavity group 112 on the smoothness of the inner peripheral wall of the air guide ring 110, thereby ensuring the guiding effect of the air guide ring 110 on the airflow. This is beneficial to further reduce the air outlet resistance of the wind wheel 200 and improve the efficiency of the fan.

[0064] As shown in Figure 5 some examples, the volume V of the cavity 1121a is greater than or equal to 500 mm 3 and less than or equal to 1500 mm 3 ; and / or the diameter d of the through hole 1121b is greater than or equal to 1 mm and less than or equal to 5 mm; and / or the cross-sectional area S of the through hole 1121b is greater than or equal to 0.78 mm 2 and less than or equal to 20 mm 2 ; and / or the length l of the through hole 1121b is greater than or equal to 10 mm and less than or equal to 20 mm.

[0065] In the technical solution, the volume V of the cavity 1121a can be greater than or equal to 500 mm 3 and less than or equal to 1500 mm 3 Based on the foregoing setting, on the one hand, the volume V of the cavity 1121a can be prevented from being too small, which is conducive to ensuring the shunting effect of the sound absorption cavity 1121 on the airflow in the airflow passage 111, thereby reducing the vortex noise; on the other hand, the volume V of the cavity 1121a can also be prevented from being too large, which is conducive to preventing the sound absorption cavity 1121 from shunting too much, and is conducive to ensuring the efficiency of the fan while reducing the impact on the overall volume of the air guide ring 110.

[0066] It can be understood that the volume V of the cavity 1121a refers to the volume of a single cavity 1121a.

[0067] In the technical solution, in the case that the through hole 1121b is a circular hole, the diameter d of the through hole 1121b can be greater than or equal to 1 mm and less than or equal to 5 mm, based on the foregoing setting, on the one hand, the diameter d of the through hole 1121b can be prevented from being too small, which is conducive to ensuring the shunting effect of the sound absorption cavity 1121 on the airflow in the airflow passage 111, thereby reducing the vortex noise; on the other hand, the diameter d of the through hole 1121b can also be prevented from being too large, which is conducive to preventing the sound absorption cavity 1121 from shunting too much, and is conducive to ensuring the efficiency of the fan and the smoothness of the inner wall of the air guide ring 110.

[0068] In the technical solution, the cross-sectional area S of the through hole 1121b can be greater than or equal to 0.78 mm2 and less than or equal to 20 mm2, based on the foregoing setting, on the one hand, the cross-sectional area S of the through hole 1121b can be prevented from being too small, which is conducive to ensuring the shunting effect of the sound absorption cavity 1121 on the airflow in the airflow passage 111, thereby reducing the vortex noise; on the other hand, the cross-sectional area S of the through hole 1121b can also be prevented from being too large, which is conducive to preventing the sound absorption cavity 1121 from shunting too much, and is conducive to ensuring the efficiency of the fan and the smoothness of the inner wall of the air guide ring 110.

[0069] It can be understood that the shape of the through hole 1121b can be, but is not limited to, a circular hole, and exemplarily, the through hole 1121b can also be an elliptical hole, a polygonal hole, etc., which can be set according to actual needs, and is not limited here.

[0070] In the technical solution, the length l of the through hole 1121b can be greater than or equal to 10 mm and less than or equal to 20 mm. Based on the foregoing setting, on the one hand, the length l of the through hole 1121b can be prevented from being too small, thereby facilitating the vibration of the gas in the sound absorption cavity 1121 under the excitation of sound waves and ensuring the weakening effect of the sound absorption cavity 1121 on sound energy. On the other hand, the length of the through hole 1121b can also be prevented from being too large, thereby reducing the volume requirement of the noise reduction cavity group 112 on the air guide ring 110, reducing the modeling difficulty of the air guide ring 110, saving the processing cost of the air guide ring 110.

[0071] It can be understood that the aforementioned four shape parameters of the sound absorption cavity 1121 in the technical solution can be simultaneously used or any one or two or three of them can be taken in actual application. In combination with the aforementioned formula (1), the differences in the aforementioned four shape parameters of the sound absorption cavity 1121 can cause differences in the natural frequency, thereby enabling different sound absorption cavities 1121 to resonate under the excitation of noise at different frequencies.

[0072] As shown in Figure 4 and Figure 7 In some examples, the number of the noise reduction cavity groups 112 is multiple, and at least part of the noise reduction cavity groups 112 are arranged along the guide direction of the air passing channel 111; and / or the number of the noise reduction cavity groups 112 is multiple, and at least part of the noise reduction cavity groups 112 are arranged along the radial direction of the air guide ring 110, and the sound absorption cavities 1121 of the adjacent two noise reduction cavity groups 112 are connected in communication along the radial direction of the air guide ring 110.

[0073] As shown in Figure 4 In the technical solution, the air guide ring 110 can have multiple noise reduction cavity groups 112, and at least part of the noise reduction cavity groups 112 are arranged along the guide direction of the air passing channel 111, thereby the corresponding range between the noise reduction cavity groups 112 and the air passing channel 111 along the air passing channel 111 can be improved, and the overall number of the sound absorption cavities 1121 can be increased, which is conducive to enhancing the noise reduction effect of the air guide ring 110 on the noise generated by the operation of the fan 200.

[0074] It can be understood that in actual application, the number of the sound absorption cavities 1121 of the adjacent two noise reduction cavity groups 112 arranged along the guide direction of the air passing channel 111 can be the same and arranged one by one, thereby the guiding effect of the air guide ring 110 on the airflow can be ensured, and the air guide ring 110 can more uniformly absorb noise. Correspondingly, the number of the sound absorption cavities 1121 of the adjacent two noise reduction cavity groups 112 arranged along the radial direction of the air guide ring 110 can be the same and arranged one by one.

[0075] As shown in Figure 7As shown, in the technical solution, the air guide ring 110 can be provided with a plurality of noise reduction cavity groups 112, and at least part of the noise reduction cavity groups 112 are arranged along the radial direction of the air guide ring 110, and the sound absorption cavities 1121 of two adjacent noise reduction cavity groups 112 are connected in communication along the radial direction of the air guide ring 110, so that on the one hand, the total number of sound absorption cavities 1121 on the air guide ring 110 can be increased, and the noise absorption effect of the air guide ring 110 on noise can be improved, and on the other hand, the shunting effect of the noise reduction cavity group 112 on the airflow in the airflow passage 111 can be enhanced, and the vortex noise can be further reduced.

[0076] As can be understood, as Figure 7 shown, in the case of multiple noise reduction cavity groups 112, part of the noise reduction cavity groups 112 can be arranged along the guide direction of the airflow passage 111, and part of the noise reduction cavity groups 112 can be arranged along the radial direction of the air guide ring 110, that is, the plurality of sound absorption cavities 1121 are arranged in a ring array along the circumferential direction, the radial direction and the axial direction of the air guide ring 110, so that the noise reduction effect of the air guide ring 110 on the wind wheel 200 can be further enhanced.

[0077] In some examples, along the guide direction of the airflow passage 111, the spacing distance between the through holes 1121b of two adjacent noise reduction cavity groups 112 is greater than or equal to 5mm and less than or equal to 15mm.

[0078] In the technical solution, along the guide direction of the airflow passage 111, the spacing distance between the through holes 1121b of two adjacent noise reduction cavity groups 112 is greater than or equal to 5mm and less than or equal to 15mm. Based on the foregoing setting, on the one hand, the plurality of noise reduction cavity groups 112 can be arranged in the guide direction of the airflow passage 111 without being too dense, so as to facilitate the volume design of the cavity 1121a of each noise reduction cavity group 112; on the other hand, the arrangement of the plurality of noise reduction cavity groups 112 in the guide direction of the airflow passage 111 can also be avoided to be too sparse, which is beneficial to improving the corresponding range between the noise reduction cavity group 112 and the airflow passage 111 along the airflow passage 111, and increasing the overall number of sound absorption cavities 1121, and is beneficial to enhancing the noise reduction effect of the air guide ring 110 on the noise of the wind wheel 200.

[0079] In some examples, along the circumferential direction of the air guide ring 110, the spacing distance between two adjacent through holes 1121b is greater than or equal to 5mm and less than or equal to 15mm.

[0080] In the technical solution, the interval distance between the two adjacent through holes 1121b along the circumference of the air guide ring 110 is greater than or equal to 5 mm and less than or equal to 15 mm. Based on the foregoing setting, on the one hand, the multiple sound absorption cavities 1121 of the noise reduction cavity group 112 can be arranged in the circumference of the air guide ring 110 without being too dense, thereby facilitating the volume design of the cavity 1121a of each sound absorption cavity 1121; on the other hand, the arrangement of the multiple sound absorption cavities 1121 in the circumference of the air guide ring 110 can also be avoided from being too sparse, which is conducive to ensuring the number of sound absorption cavities 1121 of the noise reduction cavity group 112, facilitating the noise reduction cavity group 112 to hinder the noise emitted by the fan wheel 200 from being propagated in multiple directions, and improving the shunting effect of the noise reduction cavity group 112 on the airflow in the airflow passage 111, thereby facilitating to enhance the hindering effect of the noise reduction cavity group 112 on the noise propagation of the fan wheel 200 and the noise reduction effect on the vortex noise.

[0081] In some examples, the through hole 1121b corresponds to the middle part of the cavity 1121a.

[0082] In the technical solution, the through hole 1121b of the sound absorption cavity 1121 can be arranged corresponding to the middle part of the cavity 1121a, so that the vibration of the gas in the sound absorption cavity 1121 under the excitation of the sound wave can be further facilitated, and the weakening effect of the sound absorption cavity 1121 on the sound energy can be improved.

[0083] It can be understood that by arranging the through hole 1121b corresponding to the middle part of the cavity 1121a, the natural frequency of the sound absorption cavity 1121 can also be made to be more consistent with the foregoing formula (1), thereby facilitating more accurate design of the shape of each sound absorption cavity 1121.

[0084] As shown in Figure 5 In some examples, the wall thickness h of the cavity 1121a is greater than or equal to 0.8 mm and less than or equal to 2 mm.

[0085] In the technical solution, the wall thickness h of the cavity 1121a can be greater than or equal to 0.8 mm and less than or equal to 2 mm, so that on the one hand, the structural strength and reliability of the air guide ring 110 can be ensured, the damage probability of the air guide ring 110 can be reduced, and the service life of the air guide ring 110 can be prolonged, and on the other hand, the weight of the air guide ring 110 can also be avoided from being too large, which is conducive to ensuring the lightweight level of the blade assembly.

[0086] As shown in Figure 4 and Figure 7As shown, in some examples, the inner peripheral wall of the air guide ring 110 includes a first wall segment 113 and a second wall segment 114, the first wall segment 113 and the second wall segment 114 are arranged along the air guide direction of the air passing channel 111, the part of the air passing channel 111 corresponding to the first wall segment 113 is used to accommodate the fan wheel 200 of the outdoor unit, and the part of the air passing channel 111 corresponding to the second wall segment 114 is used to be arranged at the air inlet side of the fan wheel 200; wherein at least part of the noise reduction cavity group 112 is arranged corresponding to the first wall segment 113.

[0087] In this technical solution, at least part of the noise reduction cavity group 112 can be arranged corresponding to the first wall segment 113 of the air guide ring 110, so that the positional correspondence between the noise reduction cavity group 112 and the fan wheel 200 can be improved in actual application, which is beneficial to further enhance the noise propagation hindering effect of the air guide ring 110 on the fan wheel 200 and the flow splitting effect of the air guide ring 110 on the airflow around the fan wheel 200, thereby more reliably and efficiently reducing the operating noise of the outdoor unit.

[0088] As shown in Figure 4 and Figure 7 , the cross-sectional area of the part of the air passing channel 111 corresponding to the second wall segment 114 can be greater than the cross-sectional area of the part of the air passing channel corresponding to the first wall segment 113, so as to facilitate expanding the air inlet range of the fan wheel 200 and improving the fan efficiency in actual application.

[0089] As shown in Figure 4 and Figure 7 , the first wall segment 113 can extend in a straight line, and the second wall segment 114 can extend in a curve, and the first wall segment 113 and the second wall segment 114 are connected and smoothly transitioned, so as to further improve the air guide effect of the air passing channel 111.

[0090] As shown in Figure 10 , in some examples, the air guide assembly 100 further includes a connecting piece 120 arranged on the outer peripheral wall of the air guide ring 110, and the connecting piece 120 is used to connect the shell assembly 300 of the outdoor unit.

[0091] In this technical solution, the air guide assembly 100 can further include the connecting piece 120 arranged on the outer peripheral wall of the air guide ring 110, in actual application, the connecting piece 120 can be used to connect the shell assembly 300 of the outdoor unit, so as to facilitate the assembly between the air guide assembly 100 and the shell assembly 300, and is beneficial to reduce the probability of damaging or changing the structure of the air guide ring 110 during assembly, thereby providing protection for the air guide ring 110 to stably and reliably guide airflow and absorb noise.

[0092] In some possible examples, the air guide assembly 100 can be made of a plastic material and in a one-piece structure, so that the forming difficulty of the air guide assembly 100 can be reduced, and the manufacturing cost of the air guide assembly 100 can be reduced while the structural reliability of the air guide assembly 100 is ensured.

[0093] As shown in Figure 10 According to a second aspect of the embodiments of the present disclosure, an outdoor unit is provided, which includes a shell assembly 300 formed with an air inlet, and the air guide assembly 100 according to any one of the first aspect is arranged on the shell assembly 300, and the air passing channel 111 of the air guide assembly 100 is communicated with the air inlet of the shell assembly 300.

[0094] The outdoor unit provided by the embodiments of the present disclosure includes the shell assembly 300 and the air guide assembly 100 according to any one of the first aspect, which is arranged on the shell assembly 300, and the air passing channel 111 of the air guide assembly 100 is communicated with the air inlet of the shell assembly 300.

[0095] As shown in Figure 10As shown, in some feasible examples, the outdoor unit further comprises a fan wheel 200 rotatably arranged in the shell assembly 300, and the air guide ring 110 is arranged around the fan wheel 200, so that the air guide ring 110 can guide the air outlet of the fan wheel 200 when the fan wheel 200 rotates, thereby helping to ensure the air volume and heat exchange efficiency of the outdoor unit. The air guide ring 110 forms a noise reduction cavity group 112, which comprises a sound absorption cavity 1121, and the sound absorption cavity 1121 comprises a cavity body 1121a and a through hole 1121b communicated between the cavity body 1121a and the air passage 111, so that the sound absorption cavity 1121 can receive the sound waves generated by the operation of the fan wheel 200 and part of the airflow in the air passage 111, based on which, on the one hand, the gas in the sound absorption cavity 1121 can be vibrated under the excitation of the sound waves generated by the operation of the fan wheel 200, so that the energy of the sound waves is converted into heat energy through the viscous friction of the gas in the sound absorption cavity 1121, thereby weakening the energy of the sound waves and hindering the propagation of the noise generated by the operation of the fan wheel 200; on the other hand, when there is airflow in the air passage 111, part of the airflow can flow into the aforementioned noise reduction cavity, so that the noise reduction assembly can also shunt the airflow in the air passage 111, thereby helping to reduce the vortex generated by the airflow impacting the fan wheel 200, thereby reducing the vortex noise and reducing the air outlet resistance of the fan wheel 200, and improving the fan efficiency of the outdoor unit. By setting the shape of at least one sound absorption cavity 1121 to be different from the shape of the other sound absorption cavities 1121, the natural frequency of at least one sound absorption cavity 1121 can be made different from the natural frequency of the other sound absorption cavities 1121, accordingly, the frequency at which at least one sound absorption cavity 1121 resonates under the excitation of incident sound waves can be made different from that of the other sound absorption cavities 1121, thereby being able to expand the noise reduction frequency range of the noise reduction cavity group 112. At the same time, the number of sound absorption cavities 1121 included in the noise reduction cavity group 112 is multiple, and the multiple sound absorption cavities 1121 are arranged in a circumferential direction of the air guide ring 110, thereby facilitating the noise reduction cavity group 112 to hinder the noise emitted by the fan wheel 200 from being propagated in multiple directions, helping to enhance the hindering effect of the noise reduction cavity group 112 on the noise propagation of the fan wheel 200, and can enhance the shunting effect of the noise reduction cavity group 112 on the airflow in the air passage 111, further reducing the vortex noise.

[0096] As Figure 10 shown, in some feasible examples, the outdoor unit further comprises a motor 400 and a mesh cover 500, the aforementioned shell assembly 300 comprises a shell body 310 and a panel 320, the shell body 310 is connected with the panel 320, the aforementioned motor 400 is arranged on the panel 320 and is used to drive the fan wheel 200 to rotate, and the mesh cover 500 is arranged at the air inlet.

[0097] In addition, since the outdoor unit provided by the embodiment of the present disclosure comprises the air guide assembly 100 as proposed in any one of the above first aspects, it has all the beneficial effects of the air guide assembly 100, which will not be repeated here.

[0098] According to a third aspect of the embodiments of the present disclosure, an air conditioner is provided, comprising: an indoor unit; and an outdoor unit according to any one of the second aspect.

[0099] Since the air conditioner provided by the embodiments of the present disclosure comprises the outdoor unit according to any one of the second aspect, the air conditioner has all the beneficial effects of the outdoor unit, which will not be repeated here.

[0100] In the present disclosure, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance; the term "multiple" refers to two or more, unless otherwise explicitly limited. The terms "mounting", "connecting", "connecting", "fixing" and the like should be broadly understood, for example, "connecting" can be fixed connection, or detachable connection, or integrally connected; "connected" can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances.

[0101] In the description of the present disclosure, it should be understood that the terms "upper", "lower", "left", "right", "front", "back" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present disclosure and simplifying the description, and do not indicate or imply that the device or unit referred to must have a particular direction, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the present disclosure.

[0102] In the description of the present disclosure, the terms "one embodiment", "some embodiments", "a specific embodiment" and the like described in the description mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present disclosure. In the present specification, the illustrative description 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.

[0103] The above is only the preferred embodiment of the present disclosure, and is not intended to limit the present disclosure. For those skilled in the art, the present disclosure can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present disclosure shall be included in the protection scope of the present disclosure.

Claims

1. An air deflector assembly comprising: The air guide assembly comprises: an air guide ring, an inner circumferential wall of the air guide ring surrounding an air passing channel, and the air guide ring being formed with a noise reduction cavity group, the noise reduction cavity group comprising a plurality of sound absorption cavities arranged along a circumferential direction of the air guide ring, the sound absorption cavities comprising cavities and through holes, the through holes being communicated between the cavities and the air passing channel; wherein at least one of the sound absorption cavities has a shape different from those of the other sound absorption cavities.

2. The air guide assembly according to claim 1, wherein one end of the through hole is located at the inner circumferential wall of the air guide ring, and the other end of the through hole is located in the cavity.

3. The air guide assembly according to claim 1, wherein The volume of the cavity is greater than or equal to 500 mm 3 and less than or equal to 1500 mm 3 ; and / or a diameter of the through hole is greater than or equal to 1 mm and less than or equal to 5 mm; and / or The cross-sectional area of the through hole is greater than or equal to 0.78 mm 2 and less than or equal to 20 mm 2 ; and / or a length of the through hole is greater than or equal to 10 mm and less than or equal to 20 mm.

4. The air guide assembly according to claim 1, wherein a number of the noise reduction cavity groups is a plurality, and at least part of the noise reduction cavity groups are arranged along a guide direction of the air passing channel; and / or a number of the noise reduction cavity groups is a plurality, and at least part of the noise reduction cavity groups are arranged along a radial direction of the air guide ring, and sound absorption cavities of two adjacent noise reduction cavity groups are communicated along the radial direction of the air guide ring.

5. The air guide assembly according to claim 4, wherein a distance between the through holes of two adjacent noise reduction cavity groups along the guide direction of the air passing channel is greater than or equal to 5 mm and less than or equal to 15 mm.

6. The air guide assembly according to claim 1, wherein a distance between two adjacent through holes along the circumferential direction of the air guide ring is greater than or equal to 5 mm and less than or equal to 15 mm.

7. The air guide assembly according to any one of claims 1 to 6, wherein the through hole is arranged corresponding to a middle part of the cavity.

8. The air guide assembly according to any one of claims 1 to 6, wherein a wall thickness of the cavity is greater than or equal to 0.8 mm and less than or equal to 2 mm.

9. The air guide assembly according to any one of claims 1 to 6, wherein the inner circumferential wall of the air guide ring comprises a first wall segment and a second wall segment, the first wall segment and the second wall segment are arranged along the guide direction of the air passing channel, a part of the air passing channel corresponding to the first wall segment is used for accommodating a fan wheel of an outdoor unit, and a part of the air passing channel corresponding to the second wall segment is used for being arranged at an air inlet side of the fan wheel; wherein at least part of the noise reduction cavity groups are arranged corresponding to the first wall segment.

10. The air deflector assembly of any one of claims 1-6, wherein, Further comprising: a connecting piece arranged at an outer circumferential wall of the air guide ring, the connecting piece being used for connecting a housing assembly of an outdoor unit.

11. An outdoor unit characterized by comprising: Comprising: a housing assembly, the housing assembly being formed with an air inlet; the air guide assembly according to any one of claims 1 to 10, the air guide assembly being arranged at the housing assembly, and the air passing channel being communicated with the air inlet.

12. An air conditioner characterized by comprising: Comprising: an indoor unit; the outdoor unit according to claim 11, the outdoor unit being connected to the indoor unit.

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