Air outlet panel, air outlet assembly and air conditioner

Abstract

The invention provides an air outlet panel, an air outlet assembly and an air conditioner, the air outlet panel comprises a panel body and a flow guide ring pipe connected with the panel body, an air outlet is formed in the panel body in a penetrating mode, and an air outlet grille is arranged at the air outlet end of the air outlet; the flow guide ring pipe protrudes and extends towards the fan blades from the air inlet end, close to the fan blades, of the air outlet in the axial direction of the air outlet, the flow guide ring pipe and the air outlet are correspondingly communicated, an annular surrounding plate is arranged on the end face, close to the flow guide ring pipe, of the panel body in a protruding mode and arranged on the periphery of the flow guide ring pipe in a surrounding mode, and a noise reduction cavity can be formed between the annular surrounding plate and the flow guide ring pipe. A plurality of silencing holes communicating with the silencing cavity are formed in the pipe wall of the flow guide ring pipe in a penetrating mode and distributed in the circumferential direction of the flow guide ring pipe. According to the air outlet panel, noise generated by impact of high-speed air outlet airflow on the air outlet panel can be effectively reduced, the overall noise reduction effect of the air outlet panel is better, and therefore the use experience of a user is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioners, and in particular to an air outlet panel, an air outlet component having the air outlet panel, and an air conditioner having the air outlet component. Background Art

[0002] The heat exchange airflow power source of the air conditioner's outdoor unit is a fan, which is arranged inside the casing of the outdoor unit. In order to prevent foreign matter from entering the casing and meet the mandatory standards for children's finger testing, the manufacturer provides an air outlet grille at the air outlet of the casing.

[0003] Since the air outlet grille is set on the air outlet side of the fan blades and is close to the blades, the air flow from the blades to the air outlet grille has a high wind speed and strong wind force. The high-speed air flow impacting the air outlet grille will generate additional noise. As the speed of the blades increases, the noise increase becomes more obvious.

[0004] In order to reduce the noise generated by the impact of high-speed airflow on the air outlet grille, the existing method is that the air outlet panel is provided with an air guide tube in the panel body, the air guide tube is arranged on the side of the cover shell facing the fan, the air guide channel of the air guide tube is connected with the air outlet, and the air outlet of the fan flows to the air outlet grille after passing through the air guide channel and the air outlet. In this way, the air outlet of the fan can flow to the air outlet grille after passing through the air guide channel and the preset space, so as to increase the distance between the air outlet grille and the fan, so that the air outlet of the fan is blown to the air outlet grille after flowing for a long distance, so as to balance the wind speed and wind force of the fan air outlet during the air outlet flow, reduce the occurrence of high wind speed and wind force caused by uneven wind speed and wind force of the fan air outlet, thereby reducing the concentrated air outlet at some positions of the air outlet grille, and reducing the impact noise generated by the air outlet of the fan at the air outlet grille.

[0005] The air guide tube of the air outlet panel in the above-mentioned conventional method is arranged on the side of the cover shell facing the fan. When the air outlet of the fan passes through the air guide channel and the air outlet of the air guide tube and flows to the air outlet grille, the high-speed vortex airflow generated by the fan blades first impacts the inner peripheral wall of the air guide channel of the air guide tube of the air outlet panel on a large scale, thereby reducing the air flow speed blowing to the air outlet grille. Although it can reduce the impact noise generated by the air outlet of the fan at the air outlet grille of the air outlet panel, the high-speed vortex airflow impacting the inner peripheral wall of the air guide channel of the air guide tube of the air outlet panel on a large scale will cause the air outlet panel to generate additional impact noise, thereby affecting the overall noise reduction effect of the air outlet panel, and further affecting the user experience. Summary of the invention

[0006] The first object of the present invention is to provide an air outlet panel that can effectively reduce the noise generated by the impact of high-speed air flow on it, and the overall noise reduction effect of the air outlet panel is better, thereby improving the user experience.

[0007] A second object of the present invention is to provide an air outlet assembly having the above-mentioned air outlet panel.

[0008] The third object of the present invention is to provide an air conditioner having the above-mentioned air outlet assembly.

[0009] In order to achieve the first purpose of the present invention, the present invention provides an air outlet panel, which is used to be arranged on the air outlet side of a fan blade, the air outlet panel includes a panel body and a guide ring tube connected to the panel body, the panel body is provided with an air outlet through it in the normal direction, an air outlet grille is provided at the air outlet end of the air outlet away from the fan blade, the guide ring tube protrudes and extends from the air inlet end of the air outlet close to the fan blade toward the fan blade in the axial direction of the air outlet, and the guide ring tube is connected to the air outlet in correspondence, an annular plate is protrudingly provided on the end face of the panel body close to the guide ring tube, the annular plate is arranged around the outer circumference of the guide ring tube and can form a silencer cavity between the guide ring tube, a plurality of silencer holes connected to the silencer cavity are provided through the tube wall of the guide ring tube, and the plurality of silencer holes are distributed in the circumferential direction of the guide ring tube.

[0010] A preferred solution is that the silencing cavity is filled with sound absorbing material.

[0011] A further solution is that the silencer hole is arranged as a long strip extending in the axial direction of the guide ring tube; or the silencer hole is a circular hole, and a plurality of silencer holes are distributed in the circumferential direction and axial direction of the guide ring tube.

[0012] A further solution is that the multiple silencer holes are composed of multiple long holes and multiple circular hole arrays arranged alternately in the circumferential direction of the guide ring tube, the long holes extend in the axial direction of the guide ring tube, and the circular hole array is composed of multiple circular holes distributed in the axial direction of the guide ring tube.

[0013] A further solution is that the height of the guide ring tube in the axial direction of the air outlet is between 10 mm and 80 mm; and / or, the inner diameter of the tube wall of the guide ring tube is the same as the inner diameter of the hole of the air outlet, and the guide ring tube and the air outlet are coaxially arranged; and / or, the thickness of the tube wall of the guide ring tube is between 2 mm and 10 mm.

[0014] A further solution is that the width of the silencer holes in the circumferential direction of the guide ring tube is between 1 mm and 8 mm; and / or the opening rate of the silencer holes on the tube wall of the guide ring tube is between 2% and 50%.

[0015] A further solution is that the tube wall of the guide ring tube is provided with at least two frequency division silencing areas, and the multiple frequency division silencing areas are distributed in the circumferential direction of the guide ring tube, and the opening rate of the silencing holes of at least one frequency division silencing area is different from the opening rate of the silencing holes of another frequency division silencing area, and at least one partition is connected between the annular plate and the tube wall of the guide ring tube, and the partition divides the silencing cavity into at least two frequency division cavities, and one frequency division cavity corresponds to one frequency division silencing area.

[0016] In order to achieve the second purpose of the present invention, the present invention provides an air outlet component, including an air outlet panel, a shell, fan blades and a drive control mechanism. The air outlet panel is the above-mentioned air outlet panel, the fan blades are arranged in the shell, the drive control mechanism can control the rotation of the fan blades, and the shell is penetrated by a ventilation hole, the ventilation hole is located on the air outlet side of the fan blade, the air outlet panel is arranged on the outer surface of the shell, and the guide ring pipe of the air outlet panel is connected to the exhaust hole accordingly.

[0017] A further solution is that the annular plate and the guide ring pipe of the air outlet panel are respectively abutted against the outer surface of the shell, so that a silencer cavity of the air outlet panel is formed between the annular plate, the guide ring pipe and the outer surface of the shell; and / or, the inner diameter of the tube wall of the guide ring pipe, the inner diameter of the hole of the air outlet of the air outlet panel, and the inner diameter of the hole of the exhaust hole are all the same, and the guide ring pipe, the air outlet, and the exhaust hole are all coaxially arranged.

[0018] In order to achieve the third purpose of the present invention, the air conditioner of the present invention includes an air outlet component, and the air outlet component is the above-mentioned air outlet component.

[0019] Therefore, during the working process, the driving control mechanism of the air outlet assembly of the present invention controls the rotation of the fan blades so that the airflow is blown toward the exhaust hole of the shell at a high speed, and the high-speed airflow passes through the exhaust hole of the shell and flows into the guide ring tube of the air outlet panel of the present invention which is connected with the exhaust hole. Since a plurality of silencer holes connected with the silencer cavity are formed through the tube wall of the guide ring tube, the plurality of silencer holes are connected with the silencer cavity to form a resonance sound absorption effect, so that the impact noise generated by the high-speed airflow impacting the inner peripheral wall of the guide ring tube of the air outlet panel of the present invention can be reduced and silenced, and at the same time, the sound absorption effect of the guide ring tube can be reduced. The air flow in the annular tube is subjected to wind speed and wind force balance adjustment during the flow, so that the wind speed and wind force of the air flow blown out from the guide annular tube toward the air outlet grille of the air outlet panel of the present invention are uniform, thereby avoiding concentrated wind output at a local position of the air outlet grille being impacted, so that the air outlet of the air outlet panel of the present invention discharges air uniformly, and the air outlet grille of the air outlet panel of the present invention is arranged at the air outlet end of the air outlet away from the fan blades, and the guide annular tube of the air outlet panel of the present invention is arranged between the air outlet grille and the fan blades, thereby increasing the distance between the air outlet grille and the fan blades, thereby reducing the noise generated by the air outlet grille being impacted by the airflow.

[0020] Therefore, the air outlet panel of the present invention can effectively reduce the noise generated by the impact of high-speed air flow on its guide ring pipe and air outlet grille, thereby reducing the noise generated by the air outlet panel being impacted by the high-speed air flow as a whole, making the overall noise reduction effect of the air outlet panel better, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram from the first perspective of an embodiment of the air outlet component of the present invention.

[0022] Figure 2 It is a structural diagram from a second viewing angle of an embodiment of the air outlet assembly of the present invention.

[0023] Figure 3 It is a cross-sectional view of an embodiment of an air outlet component of the present invention.

[0024] Figure 4 It is an exploded view of an embodiment of an air outlet assembly of the present invention.

[0025] Figure 5 It is a first-view structural diagram of the air outlet panel in the air outlet assembly embodiment of the present invention.

[0026] Figure 6 It is a second viewing angle structural diagram of the air outlet panel in the air outlet assembly embodiment of the present invention.

[0027] Figure 7 It is a rear view of the air outlet panel in the embodiment of the air outlet assembly of the present invention.

[0028] Figure 8 It is a cross-sectional view of an air outlet panel in an embodiment of an air outlet assembly of the present invention.

[0029] Fig. 9 It is a schematic diagram of a first implementation mode of the silencer hole of the air outlet panel in the air outlet assembly embodiment of the present invention.

[0030] Fig.10 It is a schematic diagram of a second implementation mode of the silencer hole of the air outlet panel in the air outlet assembly embodiment of the present invention.

[0031] Fig.11 It is a schematic diagram of a third implementation mode of the silencer hole of the air outlet panel in the air outlet assembly embodiment of the present invention.

[0032] Fig.12 It is a comparison simulation diagram of the frequency-noise of the air outlet panel in the embodiment of the air outlet assembly of the present invention and the existing air outlet panel.

[0033] The present invention is further described below in conjunction with the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0034] See also Figures 1 to 8The present embodiment discloses an air outlet assembly 10, including an air outlet panel 12, a shell 11, a fan blade and a drive control mechanism. The fan blade is arranged in the shell 11, and the drive control mechanism can control the rotation of the fan blade. The shell 11 is penetrated by an exhaust hole 111, and the exhaust hole 111 is located on the air outlet side of the fan blade. The air outlet panel 12 is arranged on the outer surface of the shell 11, and the guide ring pipe 124 of the air outlet panel 12 is connected to the exhaust hole 111 correspondingly, so that the air outlet panel 12 of the present embodiment is used to be arranged on the air outlet side of the fan blade. Among them, the air outlet panel 12 of this embodiment includes a panel body 121 and a guide ring tube 124 connected to the panel body 121, the panel body 121 is provided with an air outlet 123 in its normal direction, and an air outlet grille 122 is provided at the air outlet end of the air outlet 123 away from the fan blade, the guide ring tube 124 protrudes and extends from the air inlet end of the air outlet 123 close to the fan blade toward the fan blade in the axial direction of the air outlet 123, and the guide ring tube 124 is connected to the air outlet 123 in correspondence, so that the air outlet 123, the guide ring tube 124 and the exhaust hole 111 are connected in sequence. In addition, the panel body 121 of the present embodiment is provided with an annular plate 126 protruding from the end surface close to the guide ring tube 124, the annular plate 126 is arranged around the outer periphery of the guide ring tube 124 and can form a muffler cavity 128 between the guide ring tube 124, and the tube wall of the guide ring tube 124 is provided with a plurality of muffler holes 125 connected to the muffler cavity 128, and the plurality of muffler holes 125 are distributed in the circumferential direction of the guide ring tube 124. Specifically, the air outlet assembly 10 of the present embodiment can be applied not only to air conditioners, but also to ventilation systems with duct-like air duct structures. Furthermore, the drive control mechanism of the present embodiment is a drive motor.

[0035] During operation, the driving control mechanism of the air outlet assembly 10 of the present embodiment controls the rotation of the fan blades so that the airflow is blown toward the exhaust hole 111 of the shell 11 at high speed. Then, the high-speed airflow passes through the exhaust hole 111 of the shell 11 and flows into the guide ring pipe 124 of the air outlet panel 12 of the present embodiment which is connected to the exhaust hole 111. Since a plurality of silencer holes 125 connected to the silencer cavity 128 are provided through the wall of the guide ring pipe 124, the plurality of silencer holes 125 are connected to the silencer cavity 128 to form a resonance sound absorption effect, thereby being able to reduce the noise generated by the impact of the high-speed airflow on the inner peripheral wall of the guide ring pipe 124 of the air outlet panel 12 of the present embodiment, and at the same time, being able to The air flow in 24 is adjusted for wind speed and wind force balance during the flow, so that the wind speed and wind force of the air flow blown out from the guide ring pipe 124 toward the air outlet grille 122 of the air outlet panel 12 of this embodiment are uniform, avoiding concentrated impact of wind on a local position of the air outlet grille 122, so that the air outlet 123 of the air outlet panel 12 of this embodiment discharges air uniformly, and the air outlet grille 122 of the air outlet panel 12 of this embodiment is arranged at the air outlet end of the air outlet 123 away from the fan blades, and the guide ring pipe 124 of the air outlet panel 12 of this embodiment is arranged between the air outlet grille 122 and the fan blades, thereby increasing the distance between the air outlet grille 122 and the fan blades, thereby reducing the noise generated by the air outlet grille 122 being impacted by the air flow.

[0036] Therefore, the air outlet panel 12 of this embodiment can effectively reduce the noise generated by the impact of high-speed air flow on its guide ring 124 and air outlet grille 122, thereby reducing the noise generated by the impact of high-speed air flow on the air outlet panel 12 as a whole, making the overall noise reduction effect of the air outlet panel 12 better, thereby improving the user experience.

[0037] In order to further improve the sound-absorbing and noise-reducing effect, the sound-absorbing material is filled in the sound-absorbing cavity 128 of this embodiment, and the sound-absorbing material can effectively absorb the noise transmitted from the sound-absorbing hole 125 into the sound-absorbing cavity 128. Specifically, the sound-absorbing material of this embodiment can be a sound-absorbing material with sound-absorbing properties such as a foam porous sound-absorbing material, a fiber sound-absorbing material, and a sound-absorbing cotton.

[0038] The height H of the guide ring 124 in the axial direction of the air outlet 123 of this embodiment is between 10 mm and 80 mm. The minimum height H of the guide ring 124 in the axial direction of the air outlet 123 of this embodiment is set to 10 mm to ensure that the air outlet panel 12 of this embodiment has a certain space for noise reduction, and the maximum height H of the guide ring 124 in the axial direction of the air outlet 123 of this embodiment is set to 80 mm, mainly considering the aesthetic appearance and avoiding unnecessary deformation due to excessive external force. Specifically, in this embodiment, the inner diameter of the tube wall of the guide ring tube 124, the inner diameter of the hole of the air outlet 123 of the air outlet panel 12, and the inner diameter of the hole of the exhaust hole 111 are all the same, and the guide ring tube 124, the air outlet 123, and the exhaust hole 111 are all coaxially arranged to avoid blocking the flow path of the airflow, so that the airflow can be blown out smoothly and smoothly from the exhaust hole 111, the guide ring tube 124, and the air outlet 123 in turn, avoiding the impact noise caused by the airflow being blocked.

[0039] In addition, the wall thickness T of the guide ring 124 of the present embodiment is between 2 mm and 10 mm. The wall thickness T of the guide ring 124 of the present embodiment is set to 2 mm at the minimum to ensure that the guide ring 124 has a certain structural strength and sound energy dissipation performance, and the wall thickness T of the guide ring 124 of the present embodiment is set to 10 mm at the maximum to control the cost and ensure that the sound waves can quickly pass through the silencer hole 125 on the guide ring 124 and enter the silencer cavity 128 for noise reduction processing.

[0040] In addition, the width W of the silencer hole 125 in the circumferential direction of the guide ring tube 124 of this embodiment is between 1 mm and 8 mm. The minimum width W of the silencer hole 125 in the circumferential direction of the guide ring tube 124 of this embodiment is set to 1 mm, mainly to facilitate processing and ensure that sufficient sound waves pass through the silencer hole 125 into the silencer cavity 128 for noise reduction processing. The maximum width W of the silencer hole 125 in the circumferential direction of the guide ring tube 124 of this embodiment is set to 8 mm, mainly to ensure that the sound waves can be consumed to a certain extent in the silencer hole 125 and the guide ring tube 124 has sufficient structural strength.

[0041] In addition, the opening rate of the silencer holes 125 on the pipe wall of the guide ring pipe 124 of this embodiment is between 2% and 50%. The opening rate of the silencer holes 125 on the pipe wall of the guide ring pipe 124 of this embodiment is set to 2% at the minimum, mainly to ensure that enough sound waves pass through the silencer holes 125 and enter the silencer cavity 128 for noise reduction processing. The opening rate of the silencer holes 125 on the pipe wall of the guide ring pipe 124 of this embodiment is set to 50% at the maximum, mainly to ensure that the guide ring pipe 124 has sufficient structural strength.

[0042] See also Fig. 9 , Fig. 91 is a schematic diagram of a first embodiment of the muffler hole 125 . The muffler hole 125 of the first embodiment is arranged in the form of a long strip extending in the axial direction of the guide ring tube 124 .

[0043] See also Fig.10 , Fig.10 3 is a schematic diagram of a second embodiment of the muffler hole 125 ′. The muffler hole 125 ′ in the second embodiment is a circular hole. A plurality of muffler holes 125 ′ are distributed in the circumferential direction and the axial direction of the guide ring 124 .

[0044] See also Fig.11 , Fig.11 It is a schematic diagram of the third embodiment of the silencer hole. The multiple silencer holes of the third embodiment are composed of a plurality of elongated holes 125 and a plurality of circular hole arrays which are staggered in the circumferential direction of the guide ring tube 124. The elongated holes 125 extend in the axial direction of the guide ring tube 124, and the circular hole array is composed of a plurality of circular holes 125' distributed in the axial direction of the guide ring tube 124.

[0045] During operation, the driving control mechanism of the air outlet assembly 10 of the present embodiment controls the rotation of the fan blades, and the fan blades cause the air flow to blow toward the exhaust hole 111 of the shell 11 at high speed. The high-speed air flow passes through the exhaust hole 111 of the shell 11 and flows into the guide ring 124 of the air outlet panel 12 of the present embodiment which is connected to the exhaust hole 111. The generated noise sound waves pass through the silencer holes 125 on the guide ring 124 and enter the silencer cavity 128, so that part of the noise sound waves are absorbed by the sound-absorbing material filled in the silencer cavity 128, and the other part of the noise sound waves are absorbed when propagating through the silencer holes 125 on the guide ring 124. Both parts of the absorbed noise sound waves are converted into the thermal viscosity properties of air and dissipated. In addition, the air outlet grille 122 of the air outlet panel 12 of the present embodiment is arranged at the air outlet end of the air outlet 123 away from the fan blades, and a guide ring pipe 124 of a certain height is arranged between the air outlet grille 122 and the fan blades, thereby increasing the distance between the air outlet grille 122 and the fan blades, and can weaken the impact of the airflow on the air outlet grille 122, thereby reducing the noise generated by the impact of the airflow on the air outlet grille 122, and at the same time, the guide ring pipe 124 has a wind gathering and guiding effect, and can play a certain pressure maintaining role on the airflow flowing through the inside of the guide ring pipe 124, thereby reducing the loss of wind pressure and increasing the air outlet volume to a certain extent.

[0046] In order to further improve the noise reduction effect, at least two frequency-dividing sound-absorbing regions are provided on the pipe wall of the flow guide ring pipe 124 in this embodiment. The multiple frequency-dividing sound-absorbing regions are distributed in the circumferential direction of the flow guide ring pipe 124, and the opening ratio of the sound-absorbing holes 125 in at least one frequency-dividing sound-absorbing region is different from that of the sound-absorbing holes 125 in another frequency-dividing sound-absorbing region. Moreover, in this embodiment, at least one partition plate 127 is connected between the circumferential enclosing plate 126 and the pipe wall of the flow guide ring pipe 124. The partition plate 127 divides the sound-absorbing cavity 128 into at least two frequency-dividing cavities, and one frequency-dividing cavity corresponds to one frequency-dividing sound-absorbing region. Thus, noise reduction processing can be carried out for noises of different frequencies, so as to effectively reduce and eliminate the noises of different frequencies generated by the air flow impact on the air outlet panel 12 in this embodiment, reduce the total noise value, thereby improving the overall noise reduction and elimination effect of the air outlet panel 12 in this embodiment, and further improving the user experience.

[0047] Specifically, the height H of the flow guide ring pipe 124 of the air outlet panel 12 in this embodiment in the axial direction of the air outlet 123 is 25 mm, the pipe wall thickness T of the flow guide ring pipe 124 is 5 mm. Four partition plates 127 divide the sound-absorbing cavity 128 into four frequency-dividing cavities. The four frequency-dividing cavities respectively correspond to four frequency-dividing sound-absorbing regions on the pipe wall of the flow guide ring pipe 124. The widths W of the sound-absorbing holes 125 in the four frequency-dividing sound-absorbing regions in the circumferential direction of the flow guide ring pipe 124 are 2 mm, 4 mm, 5 mm, and 6 mm respectively, and the corresponding opening ratios are 35%, 28%, 17%, and 13% respectively. Moreover, sound-absorbing cotton is filled in all four frequency-dividing cavities.

[0048] Furthermore, the circumferential enclosing plate 126 and the flow guide ring pipe 124 of the air outlet panel 12 in this embodiment respectively abut against the outer surface of the housing 11, so that a sound-absorbing cavity 128 is formed between the circumferential enclosing plate 126, the flow guide ring pipe 124 and the outer surface of the housing 11. Among them, the panel body 121, the air outlet grille 122, the flow guide ring pipe 124, the circumferential enclosing plate 126 and the partition plate 127 of the air outlet panel 12 in this embodiment are integrally formed into an air outlet panel part. And the air outlet panel 12 in this embodiment is installed on the housing 11 by screws as a part.

[0049] According to the literature record of "MAA DAH-YOU (Ma Dayou), THEORY AND DES I GN OF M ICROPERFORATEDPANEL SOUND-ABSORB I NG CONSTRUCT IONS, SCI ENT IA S I N I CA, Vol. XVIII No. 1, Jan.-Feb. 1975", the sound absorption performance of the sound absorption structure formed by a frequency-dividing cavity in this embodiment and multiple sound-absorbing holes 125 on the corresponding frequency-dividing sound-absorbing region is determined by the following formula:

[0050]

[0051]

[0052]

[0053] Where r is the relative acoustic resistance, μ is the dynamic viscosity of air, t is the wall thickness of the guide ring tube 124 of this embodiment, ρ is the air density, φ=S c / S is the opening ratio of the muffler hole 125 in the frequency division muffler area of ​​this embodiment, S is the surface area of ​​a frequency division muffler area corresponding to a frequency division cavity of this embodiment (including the area of ​​the muffler hole 125 in the frequency division muffler area), S c is the area of ​​the muffler hole 125 of a frequency division muffler area corresponding to a frequency division cavity, c is the speed of sound, d is the circumferential width of the muffler hole 125 in the guide ring 124 of this embodiment, ω=2πf is the circular frequency, f is the noise frequency, m is the relative sound mass, H=V / S is the average cavity depth of a frequency division cavity in the axial direction of the guide ring 124 of this embodiment, V is the volume of a frequency division cavity in this embodiment, and α is the sound absorption coefficient. When the sound absorption coefficient is closer to 1, it means that the noise reduction performance is better, and the air outlet panel 12 of this embodiment is designed accordingly.

[0054] According to the above formula, we can calculate and simulate the Fig.12 The frequency-noise comparison simulation diagram of the air outlet panel 12 of the present embodiment and the existing air outlet panel is shown. The gray dotted line is the frequency-noise curve of the existing air outlet panel, and the black curve is the frequency-noise curve of the air outlet panel 12 of the present embodiment. It can be seen from the figure that the noise of the air outlet panel 12 of the present embodiment between the frequencies of 340Hz-2025Hz is significantly reduced compared with the existing air outlet panel, so that the air outlet panel 12 of the present embodiment can effectively reduce the noise generated by the impact of the high-speed air flow as a whole.

[0055] The above embodiments are only preferred examples of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made according to the structure, characteristics and principles of the patent application scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. An air outlet panel, used to be arranged on the air outlet side of a fan blade, the air outlet panel comprises a panel body, the panel body is penetrated and provided with an air outlet in the normal direction thereof, and an air outlet grille is arranged at the air outlet end away from the fan blade, characterized in that: The air outlet panel further comprises a guide ring tube connected to the panel body, the guide ring tube protrudes and extends from the air inlet end of the air outlet close to the fan blade toward the fan blade in the axial direction of the air outlet, and the guide ring tube is connected to the air outlet correspondingly; The panel body is provided with an annular plate protruding from the end surface close to the guide ring tube. The annular plate is arranged around the outer circumference of the guide ring tube and can form a silencer cavity between the guide ring tube and the guide ring tube. The tube wall of the guide ring tube is penetrated by a plurality of silencer holes connected with the silencer cavity, and the plurality of silencer holes are distributed in the circumferential direction of the guide ring tube.

2. The air outlet panel according to claim 1, characterized in that: The silencing cavity is filled with sound absorbing material.

3. The air outlet panel according to claim 1, characterized in that: The muffler hole is arranged in the form of a long strip extending in the axial direction of the guide ring tube; Alternatively, the silencer hole is a circular hole, and a plurality of the silencer holes are distributed in the circumferential direction and the axial direction of the guide ring tube.

4. The air outlet panel according to claim 1, characterized in that: The multiple silencer holes are composed of multiple long holes and multiple circular hole arrays arranged alternately in the circumferential direction of the guide ring tube. The long holes extend in the axial direction of the guide ring tube, and the circular hole array is composed of multiple circular holes distributed in the axial direction of the guide ring tube.

5. The air outlet panel according to claim 1, characterized in that: The height of the guide ring pipe in the axial direction of the air outlet is between 10 mm and 80 mm; And / or, the inner diameter of the tube wall of the guide ring tube is the same as the inner diameter of the hole of the air outlet, and the guide ring tube and the air outlet are coaxially arranged; And / or, the wall thickness of the guide ring tube is between 2 mm and 10 mm.

6. The air outlet panel according to claim 1, characterized in that: The width of the muffler hole in the circumferential direction of the guide ring tube is between 1 mm and 8 mm; And / or, the opening rate of the silencer holes on the tube wall of the guide ring tube is between 2% and 50%.

7. The air outlet panel according to any one of claims 1 to 6, characterized in that: The pipe wall of the guide ring pipe is provided with at least two frequency division silencing areas, and the plurality of frequency division silencing areas are distributed in the circumferential direction of the guide ring pipe, and the opening rate of the silencing holes of at least one of the frequency division silencing areas is different from the opening rate of the silencing holes of another of the frequency division silencing areas; At least one partition is connected between the annular plate and the tube wall of the guide ring tube, and the partition divides the silencing chamber into at least two frequency division chambers, and one frequency division chamber corresponds to one frequency division silencing area.

8. An air outlet assembly, comprising an air outlet panel, a housing, a fan blade and a drive control mechanism, characterized in that: The air outlet panel is the air outlet panel described in any one of claims 1 to 7; The fan blade is arranged in the shell, the driving control mechanism can control the rotation of the fan blade, the shell is penetrated by an exhaust hole, and the exhaust hole is located at the air outlet side of the fan blade; The air outlet panel is arranged on the outer surface of the shell, and the guide ring pipe of the air outlet panel is connected with the exhaust hole correspondingly.

9. The air outlet assembly according to claim 8, characterized in that: The surrounding plate of the air outlet panel and the guide ring pipe are respectively abutted against the outer surface of the shell, so that a silencer cavity of the air outlet panel is formed between the surrounding plate, the guide ring pipe and the outer surface of the shell; And / or, the inner diameter of the tube wall of the guide ring tube, the inner diameter of the hole of the air outlet of the air outlet panel, and the inner diameter of the hole of the exhaust hole are all the same, and the guide ring tube, the air outlet, and the exhaust hole are all coaxially arranged.

10. An air conditioner, comprising an air outlet assembly, characterized in that: The air outlet component is the air outlet component described in any one of claims 8 or 9.

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