Outdoor unit panel and air conditioner outdoor unit

Abstract

The invention discloses an outdoor unit panel and an air conditioner outdoor unit. The outdoor unit panel comprises a panel body and a grating assembly. The panel body is provided with an air outlet penetrating through the inner side and the outer side of the panel body, and the air outlet is used for air outlet. The grille assembly comprises an annular frame and a grille body, the annular frame is arranged on the outer side of the air outlet and protrudes in the air outlet direction of the air outlet, and the grille body is arranged on the side, away from the air outlet, of the annular frame. The outdoor unit panel can effectively reduce noise generated when the air conditioner outdoor unit blows air, and the use experience of a user is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioner outdoor units, and in particular to an outdoor unit panel and an air conditioner outdoor unit. Background Art

[0002] The power source of the airflow heat exchange of the air conditioner outdoor unit is the outdoor fan. In order to prevent foreign objects from entering the outdoor unit and meet the mandatory standards for children's finger testing, all manufacturers will set an air outlet grille on the panel of the outdoor unit. At present, the noise of the air conditioner outdoor unit mainly comes from the compressor pipeline system and the fan system inside the outdoor unit. The noise of the compressor pipeline system can be suppressed by optimizing the pipeline structure of the compressor. Since the air outlet grille of the air conditioner outdoor unit is located downstream of the fan blade flow path, when the air conditioner outdoor unit is discharged, the high-speed airflow impacting the grille will inevitably generate additional noise, and the noise is relatively large, which greatly affects the user experience. Summary of the invention

[0003] The embodiment of the present invention provides an external unit panel and an air conditioner external unit, which solves the problem of loud noise when the air conditioner external unit discharges air.

[0004] In a first aspect, an embodiment of the present invention provides an external unit panel and an air conditioner external unit, comprising:

[0005] The panel body is provided with an air outlet penetrating both inner and outer sides thereof, and the air outlet is used for discharging air;

[0006] The grille assembly comprises an annular frame and a grille body. The annular frame is arranged at the outer side of the air outlet and protrudes along the air outlet direction of the air outlet. The grille body is arranged at one side of the annular frame away from the air outlet.

[0007] In the external unit panel provided in an embodiment of the present invention, the grille body includes a grille mesh and grille ribs, the grille ribs are connected to the inner side of the annular frame and extend in the radial direction of the annular frame and the circumferential direction of the annular frame, and the grille mesh covers the side of the annular frame away from the air outlet and is connected to the grille ribs.

[0008] In the external unit panel provided in an embodiment of the present invention, the grille ribs include radial ribs and circumferential ribs, the radial ribs are connected to the inner side of the annular frame and extend in the radial direction of the annular frame, the circumferential ribs are extended along the circumference of the annular frame and are cross-connected with the radial ribs, and the grille wire mesh is connected between the radial ribs and the circumferential ribs.

[0009] In the external unit panel provided in the embodiment of the present invention, both the radial ribs and the circumferential ribs are formed with wind guiding slopes on one side facing the air outlet, and the wind guiding slopes are inclined relative to the air outlet direction of the air outlet.

[0010] In the external unit panel provided in the embodiment of the present invention, the angle at which the wind guiding slope is inclined relative to the wind outlet direction of the air outlet is θ, wherein 20°≤θ≤60°.

[0011] In the external machine panel provided in an embodiment of the present invention, the grille wire mesh includes a plurality of first wires arranged in parallel and spaced apart and a plurality of second wires arranged in parallel and spaced apart, the first wires are cross-connected with the second wires, wherein the spacing between two adjacent first wires and / or between two adjacent second wires is 2 mm to 10 mm.

[0012] In the external machine panel provided by the embodiment of the present invention, the diameters of the first wire strip and the second wire strip are both 0.1 mm to 0.5 mm.

[0013] In the external unit panel provided in an embodiment of the present invention, the external unit panel also includes a silencer cylinder, which is arranged on the inner side of the annular frame along the axis of the annular frame and extends in the air outlet direction of the air outlet, the silencer cylinder is closed at one end away from the air outlet and open at one end close to the air outlet, and a plurality of through holes are distributed on the side wall of the silencer cylinder.

[0014] In the external unit panel provided in the embodiment of the present invention, the inner side of the silencer cylinder is filled with sound absorbing material.

[0015] In the external unit panel provided in an embodiment of the present invention, the external unit panel also includes a fan blade, which includes an impeller and blades. The impeller is arranged on the inner side of the panel body and is coaxial with the silencer cylinder. The blades are connected to the radial outer side of the impeller and alternate with the inner side of the panel body, wherein the diameter of the impeller is less than or equal to the inner diameter of the silencer cylinder.

[0016] In the external unit panel provided in the embodiment of the present invention, in the air outlet direction of the air outlet, the distance from the side of the blade close to the panel body to the end surface of the cylinder is d, where d≥10 mm.

[0017] In the external unit panel provided in the embodiment of the present invention, the length L of the annular frame in the air outlet direction of the air outlet is 10 mm ≤ L ≤ 100 mm.

[0018] In the external machine panel provided in the embodiment of the present invention, the panel body is provided with a card interface at the outer edge of the air outlet, and the annular frame is provided with a buckle on the side facing the air outlet, and the buckle is buckled with the card interface.

[0019] In a second aspect, an embodiment of the present invention provides an air-conditioning outdoor unit, which includes the outdoor unit panel described in the first aspect.

[0020] The embodiment of the present invention provides an external unit panel and an air conditioner external unit, the external unit panel includes a panel body and a grille assembly; the panel body is provided with an air outlet that runs through both sides thereof, the air outlet being used for air outlet; the grille assembly includes an annular frame and a grille body, the annular frame is arranged outside the air outlet and protrudes along the air outlet direction of the air outlet, and the grille body is arranged on a side of the annular frame away from the air outlet. The external unit panel of the present application arranges the annular frame outside the air outlet of the panel body, and protrudes along the air outlet direction of the air outlet, and the grille body is arranged on a side of the annular frame away from the air outlet, so that the grille body protrudes relative to the panel body in the air outlet direction of the air outlet, thereby reducing the pressure of the airflow when the air is discharged, and the impact of the airflow on the grille body becomes soothing, effectively reducing the noise of the air conditioner external unit when the air is discharged, and improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0022] Figure 1 A three-dimensional diagram of an external panel provided by an embodiment of the present invention;

[0023] Figure 2 A three-dimensional diagram of a panel body provided by an embodiment of the present invention;

[0024] Figure 3 An exploded view of an external unit panel provided by an embodiment of the present invention;

[0025] Figure 4 A top view of an external unit panel provided by an embodiment of the present invention;

[0026] Figure 5 A side view of an external unit panel provided by an embodiment of the present invention;

[0027] Figure 6 A three-dimensional diagram of a grille assembly provided by an embodiment of the present invention;

[0028] Figure 7 Another perspective view of a grille assembly provided by an embodiment of the present invention;

[0029] Figure 8 for Figure 6 A partial enlarged view of;

[0030] Fig. 9 A schematic diagram of the structure of the wind guide slope provided in an embodiment of the present invention;

[0031] Fig.10 for Figure 6 A magnified view of part A;

[0032] Fig.11 Another three-dimensional diagram of an external panel provided by an embodiment of the present invention;

[0033] Fig.12 A diagram showing the position relationship between the grille assembly and the fan blades provided in an embodiment of the present invention;

[0034] Fig.13 for Figure 2 A magnified view of part A;

[0035] The reference numerals in the figures are:

[0036] 10. Panel body; 101. Air outlet; 102. Card interface; 20. Grille assembly; 21. Ring frame; 210. Buckle; 22. Grille body; 221. Grille wire mesh; 2211. First wire strip; 2212. Second wire strip; 222. Grille ribs; 2221. Radial ribs; 2222. Circumferential ribs; 2220. Wind guide slope; 30. Silencer cylinder; 301. Through hole; 40. Fan blade. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] The directional terms mentioned in the present invention, such as "upper", "lower", "front", "back", "left", "right", "inner", "outer", "side", etc., are only referenced to the directions of the attached drawings. Therefore, the directional terms used are used to illustrate and understand the present invention, but are not used to limit the present invention. In addition, in the drawings, structures with similar or identical structures are represented by the same reference numerals.

[0039] Reference Figures 1 to 5, which shows an embodiment of the external panel provided by the present invention. The structure and working principle of the external panel are described in detail below in conjunction with the drawings of the specification. The external panel includes a panel body 10 and a grille assembly 20; the panel body 10 is provided with an air outlet 101 that runs through both sides thereof, and the air outlet 101 is used for air outlet; the grille assembly 20 includes an annular frame 21 and a grille body 22, the annular frame 21 is arranged on the outside of the air outlet 101 and protrudes along the air outlet direction of the air outlet 101, and the grille body 22 is arranged on the side of the annular frame 21 away from the air outlet 101.

[0040] In a specific implementation, the external unit panel is a part of the shell of the air conditioner external unit. In actual application, it is used to separate the inside of the air conditioner external unit from the outside, and plays a role in protecting the internal components of the air conditioner external unit, such as the compressor and condenser. In this embodiment, the external unit panel includes a panel body 10 and a grille assembly 20. The panel body 10 is in the shape of a plate as a whole. The panel body 10 has an inner and outer side. In actual application, the inner side of the panel body 10 mainly faces the inside of the air conditioner external unit, and the outer side mainly faces the inside of the air conditioner external unit. The panel body 10 is provided with an air outlet 101 that passes through its inner and outer sides. The air outlet 101 is mainly used to discharge air, and its shape is arbitrary. In this embodiment, the shape of the air outlet 101 is designed to be circular, and in other embodiments, it can also be designed to be rectangular, elliptical, and the like. The grille assembly 20 is integrally arranged at the air outlet 101 on the panel body 10. The grille assembly 20 allows air to pass through, and is mainly used to help the inside of the air conditioner outdoor unit to perform convection heat exchange with the external environment. The grille assembly 20 includes an annular frame 21 and a grille body 22. The grille body 22 is a transparent grille structure that allows air to pass through freely, and the annular frame 21 is a frame structure of the grille body 22. The annular frame 21 is annular as a whole, and its shape design is adapted to the shape of the air outlet 101. The annular frame 21 is integrally arranged on the outside of the air outlet 101 on the panel body 10, and the annular frame 21 is protruded along the air outlet direction of the air outlet 101 as a whole, such as Figure 4 and Figure 5As shown, W represents the outlet direction of the air outlet 101, and the annular frame 21 as a whole is convex in the outlet direction of the air outlet 101. The length of the annular frame 21 protruding along the outlet direction of the air outlet 101 can be designed according to actual needs and is not limited here. The grille body 22 is arranged on the side of the annular frame 21 away from the air outlet 101, covering the axial area of ​​the entire annular frame 21, and the grille body 22 as a whole maintains a certain distance from the outside of the air outlet 101. The grille body 22 is transparent on both sides, and air can flow between the inside and outside of the panel body 10 through the grille, while larger objects cannot pass through the grille body 22. In actual application, after the installation of the external unit panel is completed, the inside and outside of the air conditioner external unit are separated by the grille body 22, and the air in the external environment can enter the internal environment of the air conditioner external unit through the grille body 22, and the air in the internal environment of the air conditioner external unit can also enter the external environment through the grille body 22, while larger foreign objects cannot pass through the grille body 22. When the air conditioner outdoor unit is working, the internal air outlet components of the air conditioner outdoor unit operate to discharge air, and most of the air flow directly flows to the external atmosphere through the grille body 22, and part of the air flow at the edge is also guided to the grille body 22 by the annular frame 21 protruding in the air outlet direction of the air outlet 101. Since the grille body 22 is located on the side of the annular frame 21 away from the air outlet 101, the distance traveled by the air flow from generation to discharge is relatively long, so that the pressure of the air flow during the air outlet can be reduced to a certain extent, and the impact of the air flow on the grille body 22 becomes relatively gentle, thereby effectively reducing the noise generated by the air flow impacting the grille body 22.

[0041] The external unit panel of this embodiment sets the annular frame on the outside of the air outlet of the panel body, and protrudes the annular frame along the air outlet direction of the air outlet. The grille body is set on the side of the annular frame away from the air outlet, so that the grille body protrudes in the air outlet direction of the air outlet relative to the panel body, thereby reducing the pressure of the air flow when the air is out, and the impact of the air flow on the grille body becomes soothed, thereby reducing the noise when the air conditioner outdoor unit is out of air, and the user has a better experience using the air conditioner.

[0042] In one embodiment, referring to Figures 6 to 8The grille body 22 includes a grille mesh 221 and grille ribs 222. The grille ribs 222 are connected to the inner side of the annular frame 21 and extend in the radial direction and circumferential direction of the annular frame 21. The grille mesh 221 covers the side of the annular frame 21 away from the air outlet 101 and is connected to the grille ribs 222. Specifically, the grille body 22 includes a grille mesh 221 and grille ribs 222. The grille mesh 221 is a mesh structure, and the grille ribs 222 are strip structures. The grille ribs 222 are arranged on the inner side of the annular frame 21 and extend in the radial direction and circumferential direction of the annular frame 21. The grille mesh 221 is entirely covered on the side of the annular frame 21 away from the air outlet 101. The grille mesh 221 covers the inner side of the entire annular frame 21 in the axial direction of the annular frame 21 and is connected to the grille ribs 222. The grille ribs 222 support and reinforce the grille mesh 221, thereby improving the protective capability of the grille mesh 221. In actual applications, when the air conditioner outdoor unit is working, the air outlet component operates to discharge air, and the airflow flows to the grille mesh 221 after it is generated. When the airflow reaches the grille mesh 221, it has become relatively relaxed. The airflow impacts the grille mesh 221 and flows through the grille mesh 221 into the external atmosphere. The grille mesh 221 has less resistance to the airflow, so when the airflow is discharged through the grille mesh 221, the noise generated is smaller.

[0043] Further, refer to Figure 8 The grille ribs 222 include radial ribs 2221 and circumferential ribs 2222. The radial ribs 2221 are connected to the inner side of the annular frame 21 and extend in the radial direction of the annular frame 21. The circumferential ribs 2222 are arranged along the circumferential extension of the annular frame 21 and are cross-connected with the radial ribs 2221. The grille wire mesh 221 is connected between the radial ribs 2221 and the circumferential ribs 2222. In a specific implementation, the grille ribs 222 are composed of radial ribs 2221 and circumferential ribs 2222. The radial ribs 2221 are in a straight strip structure. The radial ribs 2221 are connected to the radial inner side of the annular frame 21 and extend in the radial direction of the annular frame 21. The circumferential ribs 2222 are in an annular structure as a whole. The circumferential ribs 2222 are arranged along the circumferential extension of the annular frame 21, and the circumferential ribs 2222 are cross-connected with the radial ribs 2221 inside the annular frame 21. The grille wire mesh 221 is connected between the radial ribs 2221 and the circumferential ribs 2222, filling and covering the part between the radial ribs 2221 and the circumferential ribs 2222. The cross-connection of the radial ribs 2221 and the circumferential ribs 2222 improves the stability of the wire mesh, and the grille wire mesh 221 has better protection and stronger impact resistance.

[0044] Furthermore, refer to Fig. 9The radial ribs 2221 and the circumferential ribs 2222 both form an air guiding slope 2220 on one side facing the air outlet 101 , and the air guiding slope 2220 is inclined relative to the air outlet direction of the air outlet 101 . In a specific implementation, both the radial ribs 2221 and the circumferential ribs 2222 are formed with an air guide slope 2220 on the side facing the air outlet 101. The air guide slope 2220 is an inclined surface structure inclined at a certain angle relative to the air outlet direction of the air outlet 101. The angle of the air guide slope 2220 inclined relative to the air outlet direction of the air outlet 101 can be set arbitrarily. In actual application, when the air conditioner outdoor unit is working, the air flow generated by the air outlet component will simultaneously impact the grille wire mesh 221 and the grille ribs 222. The air guide slope 2220 formed on the radial ribs 2221 and the circumferential ribs 2222 meets the air flow. Since the air guide slope 2220 is inclined relative to the air outlet direction of the air outlet 101, the windward area of ​​the axial ribs and the circumferential ribs 2222 is reduced, the resistance of the air flow is reduced, and the wind resistance is reduced. Therefore, the noise is smaller when the air flow impacts the radial ribs 2221 and the circumferential ribs 2222.

[0045] Preferably, refer to Fig. 9 , the angle at which the air guide slope 2220 is inclined relative to the air outlet direction of the air outlet 101 is θ, wherein 20°≤θ≤60°. In a specific implementation, the angle at which the air guide slope 2220 is inclined relative to the air outlet direction of the air outlet 101 determines the overall wind resistance of the grille ribs 222. Therefore, a reasonable setting of the inclination angle of the air guide slope 2220 can effectively reduce noise. θ represents the angle at which the air guide slope 2220 is inclined relative to the air outlet direction of the air outlet 101. In this embodiment, 20°≤θ≤60° is preferred, that is, the maximum inclination angle of the air guide slope 2220 relative to the air outlet direction of the air outlet 101 can be designed to be 60°, and the minimum can be designed to be 20°. By designing the maximum inclination angle of the air guide slope 2220 relative to the air outlet direction of the air outlet 101 to be 20°≤θ≤60°, the overall wind resistance of the grille ribs 222 can be ensured to be at a relatively low level, so that the noise of the airflow impacting the grille ribs 222 is relatively small.

[0046] In one embodiment, referring to Figure 8, the grid wire mesh 221 includes a plurality of first wire strips 2211 arranged in parallel and spaced apart and a plurality of second wire strips 2212 arranged in parallel and spaced apart, the first wire strips 2211 and the second wire strips 2212 are cross-connected, wherein the spacing between two adjacent first wire strips 2211 and / or between two adjacent second wire strips 2212 is 2 mm to 10 mm. In a specific implementation, the grid wire mesh 221 is composed of a plurality of first wire strips 2211 arranged in parallel and spaced apart and a plurality of second wire strips 2212 arranged in parallel and spaced apart, the plurality of first wire strips 2211 and the plurality of second wire strips 2212 are cross-connected to form a mesh structure, the adjacent two first wire strips 2211 maintain a certain spacing, and the spacing between all the first wire strips 2211 is the same, similarly, the adjacent two second wire strips 2212 also maintain a certain spacing, and the spacing between all the second wire strips 2212 is the same. In this embodiment, the spacing between two adjacent first wire strips 2211 and / or between two adjacent second wire strips 2212 is 2 mm to 10 mm, that is, the spacing between two adjacent first wire strips 2211 can be designed to be 2 mm to 10 mm, or the spacing between two adjacent second wire strips 2212 can be designed to be 2 mm to 10 mm, or the spacing between two adjacent first wire strips 2211 and two adjacent second wire strips 2212 can be set to 2 mm to 10 mm at the same time. By setting the spacing between two adjacent first wire strips 2211 and two adjacent second wire strips 2212 to 2 mm to 10 mm, the windward surface area of ​​the grille wire mesh 221 is small, the wind resistance is low, and the noise generated by the airflow impacting the grille wire mesh 221 is at a relatively low level without affecting the protective performance of the grille wire mesh 221.

[0047] Furthermore, the diameters of the first wire strip 2211 and the second wire strip 2212 are both 0.1 mm to 0.5 mm. In a specific implementation, in addition to the spacing between two adjacent first wire meshes and two adjacent second wire meshes affecting the wind resistance when the airflow impacts the grille wire mesh 221, the diameters of the first wire strip 2211 and the second wire strip 2212 also affect the wind resistance. The first wire strip 2211 and the second wire strip 2212 are both designed as circular filamentary structures. Generally speaking, the smaller the diameter of the first wire strip 2211 and the second wire strip 2212, the smaller the windward surface area and the smaller the wind resistance. However, considering the protective performance of the grille wire mesh 221, the smaller the diameter of the first wire strip 2211 and the second wire strip 2212, the lower the strength of the first wire strip 2211 and the second wire strip 2212, and the greater the risk of breaking when impacted by foreign objects. Therefore, in this embodiment, the diameters of the first wire strip 2211 and the second wire strip 2212 are designed to be the same, both designed to be 0.1 mm to 0.5 mm, that is, the minimum diameter of the first wire strip 2211 and the second wire strip 2212 is designed to be 0.1 mm and the maximum diameter is designed to be 0.5 mm. By designing the diameters of the first wire strip 2211 and the second wire strip 2212 to be 0.1 mm to 0.5 mm, the noise generated by the airflow impacting the grille wire mesh 221 can be kept at a relatively low level without affecting the protective performance of the grille wire mesh 221.

[0048] In one embodiment, referring to Figures 4 to 7 as well as Fig.10The external unit panel also includes a silencer cylinder 30, which is arranged on the inner side of the annular frame 21 along the axis of the annular frame 21 and extends in the air outlet direction of the air outlet 101. The silencer cylinder 30 is closed at one end away from the air outlet 101 and open at one end close to the air outlet 101. A plurality of through holes 301 are distributed on the side wall of the silencer cylinder 30. In a specific implementation, the external unit panel also includes a silencer cylinder 30, which is a cylindrical structure with one end closed and the other end open. The silencer cylinder 30 is arranged on the inner side of the annular frame 21 along the axis of the annular frame 21 as a whole, and is specifically arranged at the center position of the annular frame 21 and coaxial with the annular frame 21, and the silencer cylinder 30 extends in the air outlet direction of the air outlet 101, wherein the end of the silencer cylinder 30 away from the air outlet 101 is a closed end, and the end of the silencer cylinder 30 close to the air outlet 101 is an open end, and a plurality of through holes 301 are arranged on the side wall of the silencer cylinder 30, and the plurality of through holes 301 are evenly distributed on the side wall of the silencer cylinder 30, and the through holes 301 connect the inner and outer sides of the silencer cylinder 30, and the specific number of the through holes 301 is not limited and can be set according to actual needs. In this embodiment, the axial length of the silencer cylinder 30 is preferably designed to be 20 mm to 100 mm, the thickness between the inner wall and the outer wall of the silencer cylinder 30 is preferably designed to be 2 mm to 6 mm, the diameter of the through hole 301 is preferably set to 1 mm to 6 mm, and the perforation rate of the through hole 301 is preferably set to 5% to 50%. The perforation rate refers to the ratio of the number of through holes 301 on the silencer cylinder 30 to the side wall area of ​​the silencer cylinder 30, and is also an indicator for measuring the density of the through holes 301. The silencer cylinder 30 is mainly used to absorb the noise generated by the operation of the wind component and suppress the noise generated by the operation of the wind component. According to the principle of acoustic propagation, the sound absorption performance of the silencer cylinder 30 is determined by the following formula:

[0049] (1)

[0050] (2)

[0051] (3)

[0052] In the above formula, r is the relative acoustic resistance, μ is the dynamic viscosity of air, t is the thickness between the inner and outer walls of the silencer cylinder 30, ρ is the air density, and φ=S c / S is the perforation rate of the through hole 301 on the side wall of the silencer cylinder, S is the side area of ​​the silencer cylinder 30, S cis the total area of ​​all the through holes 301 on the side wall of the silencer cylinder 30, c is the speed of sound, d is the diameter of the through hole 301 on the side wall of the silencer cylinder 30, ω=2πf is the circular frequency, f is the noise frequency, m is the relative sound mass, R is the inner radius of the silencer cylinder 30, α is the sound absorption coefficient, and the closer α is to 1, the better the noise reduction performance is, and the diameter of the through hole 301, the perforation rate and other structural parameters are designed accordingly. The parameters of the through hole 301 on the side wall of the silencer cylinder 30 are reasonably designed by the above formula, which can effectively reduce the noise generated when the air is discharged.

[0053] Furthermore, the inner side of the muffler cylinder 30 is filled with a sound-absorbing material (not shown). In a specific implementation, the muffler cylinder 30 is filled with a sound-absorbing material, and the sound-absorbing material can be filled with the inside of the muffler cylinder 30. The sound-absorbing material can be a foam porous sound-absorbing material, a fiber sound-absorbing material, or other sound-absorbing material with sound-absorbing properties. By filling the inside of the muffler cylinder 30 with a sound-absorbing material, the noise transmitted from the through hole 301 on the side wall of the muffler cylinder 30 to the inside of the muffler cylinder 30 can be effectively absorbed, and the noise reduction performance can be further improved.

[0054] In one embodiment, referring to Figures 3 to 5 as well as Fig.11 and 12 The external panel also includes a fan blade 40, which includes an impeller and blades. The impeller is arranged on the inner side of the panel body 10 and is coaxial with the muffler cylinder 30. The blades are connected to the radial outer side of the impeller and alternate with the inner side of the panel body 10, wherein the diameter of the impeller is less than or equal to the inner diameter of the muffler cylinder 30. In a specific implementation, the external panel also includes a fan blade 40, which is mainly used to convect the heat exchanger tube body inside the air conditioner external unit, generating airflow to take away the heat of the heat exchanger tube body. The fan blade 40 is composed of an impeller and blades. The impeller is a hub structure, which is mainly used to connect the drive shaft of the motor, and the blades are connected to the radial outer side of the impeller. The impeller is arranged on the inner side of the panel body 10 and is coaxial with the muffler cylinder 30. The blades are fixedly connected to the radial outer side of the impeller. The front end of the blade is kept at a certain distance from the inner side of the panel body 10. The operation of the fan blade 40 is driven by the motor to drive the impeller to rotate and then drive the blades to rotate, thereby generating airflow. In this embodiment, the diameter of the impeller is designed to be less than or equal to the inner diameter of the silencer cylinder 30, so that the entire impeller is within the axial projection range of the silencer cylinder 30. The noise generated when the impeller is running can be more effectively absorbed by the silencer cylinder 30, further reducing the noise.

[0055] Preferably, refer to Fig.12, in the air outlet direction of the air outlet 101, the distance from the side of the blade close to the panel body 10 to the end face of the cylinder is d, where d≥10mm. In specific implementation, when the fan blade 40 is installed on the panel body 10, the blade is spaced a certain distance from the inner side of the panel body 10. Since the fan blade 40 is a rotating component, in order to ensure that the fan blade 40 can operate normally, the fan blade 40 cannot come into contact with other components or be too close to other components. In this embodiment, W represents the air outlet direction of the air outlet 101, and d represents the distance from the side of the blade close to the panel body 10 to the end face of the cylinder. In the air outlet direction of the air outlet 101, d≥10mm is designed, that is, the minimum distance from the side of the blade close to the panel body 10 to the end face of the cylinder is designed to be 10mm, which can prevent the silencer cylinder 30 from coming into contact with the fan blade 40 due to assembly and process errors, thereby affecting the operation of the fan blade 40.

[0056] In one embodiment, referring to Fig.12 , the length L of the annular frame 21 in the air outlet direction of the air outlet 101, wherein 10mm≤L≤100mm. In a specific implementation, the annular frame 21 protrudes along the air outlet direction of the air outlet 101, which can extend the path of the airflow from generation to discharge, reduce the pressure of the airflow, and reduce the noise generated by the airflow impacting the grille body 22. The length of the annular frame 21 in the air outlet direction of the air outlet 101 also needs to be reasonably set. The length of the annular frame 21 in the air outlet direction of the air outlet 101 cannot be too large, otherwise it is easy to cause the panel body 10 to be subjected to excessive external force and unnecessary deformation. In this embodiment, W represents the air outlet direction of the air outlet 101, and L represents the length of the annular frame 21 in the air outlet direction of the air outlet 101. In design, 10mm≤L≤100mm, that is, the length of the annular frame 21 in the air outlet direction of the air outlet 101 can be designed to be a minimum of 10mm and a maximum of 100mm. By designing the length of the annular frame 21 in the air outlet direction of the air outlet 101 to be 10mm~100mm, it is ensured that there is a certain space for noise reduction, and the panel body 10 is balanced in force. At the same time, the appearance of the external unit panel is also beautiful.

[0057] In one embodiment, referring to Fig.13, the panel body 10 is provided with a card interface 102 at the outer edge of the air outlet 101, and the annular frame 21 is provided with a buckle 210 on the side facing the air outlet 101, and the buckle 210 is buckled with the card interface 102. In a specific implementation, the grille assembly 20 is designed to be detachably installed with the air outlet 101 of the panel body 10, the panel body 10 is provided with a card interface 102 at the outer edge of the air outlet 101, and a buckle 210 is provided on the side of the annular frame 21 facing the air outlet 101, and the card interface 102 is an open structure, and the buckle 210 on the annular frame 21 is buckled in the card interface 102 to achieve the fixation of the annular frame 21 and the panel body 10, and the buckling method realizes the detachable connection of the entire grille assembly 20 and the panel body 10, and the installation and disassembly of the grille assembly 20 and the panel body 10 are more convenient.

[0058] In one embodiment, an air conditioner outdoor unit is provided, which includes the outdoor unit panel described in the above embodiment. The outdoor unit panel is a part of the shell of the air conditioner outdoor unit. The outdoor unit panel is assembled into a complete shell with other parts of the air conditioner outdoor unit shell. In addition, the air conditioner outdoor unit also includes other components, such as a compressor, a condenser and the like. In practical applications, the grille assembly 20 on the outdoor unit panel allows air to pass through, helping the interior of the air conditioner outdoor unit to conduct convection heat exchange with the external environment. At the same time, the grille assembly 20 on the outdoor unit panel provides protection for the air conditioner outdoor unit to prevent foreign matter from entering the interior of the air conditioner outdoor unit. Due to the design of the outdoor unit panel structure, the noise generated by the air conditioner outdoor unit during operation is effectively reduced. Since the specific structure and working principle of the outdoor unit panel have been introduced in detail in the previous specification, they will not be repeated here for the sake of brevity.

[0059] The air conditioner outdoor unit in this embodiment adopts the outdoor unit panel provided by the present invention, so in actual operation, the air conditioner outdoor unit produces less noise than a traditional air conditioner outdoor unit, and the use comfort is improved.

[0060] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. An external unit panel, characterized in that: include: The panel body is provided with an air outlet penetrating both inner and outer sides thereof, and the air outlet is used for discharging air; The grille assembly comprises an annular frame and a grille body. The annular frame is arranged at the outer side of the air outlet and protrudes along the air outlet direction of the air outlet. The grille body is arranged at one side of the annular frame away from the air outlet.

2. The external panel according to claim 1, characterized in that: The grille body includes a grille mesh and grille ribs, the grille ribs are connected to the inner side of the annular frame and extend in the radial direction and the circumferential direction of the annular frame, and the grille mesh covers the side of the annular frame away from the air outlet and is connected to the grille ribs.

3. The external panel according to claim 2, characterized in that: The grille ribs include radial ribs and circumferential ribs, the radial ribs are connected to the inner side of the annular frame and extend in the radial direction of the annular frame, the circumferential ribs are extended along the circumference of the annular frame and are cross-connected with the radial ribs, and the grille wire mesh is connected between the radial ribs and the circumferential ribs.

4. The external panel according to claim 3, characterized in that: The radial ribs and the circumferential ribs both form an air guiding inclined surface on one side facing the air outlet, and the air guiding inclined surface is inclined relative to the air outlet direction of the air outlet.

5. The external panel according to claim 4, characterized in that: The angle at which the wind guiding slope is inclined relative to the wind outlet direction of the air outlet is θ, wherein 20°≤θ≤60°.

6. The external panel according to claim 4, characterized in that: The grid wire mesh includes a plurality of first wires arranged in parallel and spaced apart and a plurality of second wires arranged in parallel and spaced apart, wherein the first wires are cross-connected with the second wires, wherein the spacing between two adjacent first wires and / or between two adjacent second wires is 2 mm to 10 mm.

7. The external panel according to claim 6, characterized in that: The diameters of the first wire and the second wire are both 0.1 mm to 0.5 mm.

8. The external machine panel according to any one of claims 1 to 7, characterized in that: The external unit panel also includes a silencer cylinder, which is arranged on the inner side of the annular frame along the axis of the annular frame and extends in the air outlet direction of the air outlet. The silencer cylinder is closed at one end away from the air outlet and open at one end close to the air outlet, and a plurality of through holes are distributed on the side wall of the silencer cylinder.

9. The external panel according to claim 8, characterized in that: The inner side of the silencer cylinder is filled with sound absorbing material.

10. The external panel according to claim 8, characterized in that: The external unit panel also includes a fan blade, which includes an impeller and blades. The impeller is arranged on the inner side of the panel body and is coaxial with the silencer cylinder. The blades are connected to the radial outer side of the impeller and alternate with the inner side of the panel body, wherein the diameter of the impeller is less than or equal to the inner diameter of the silencer cylinder.

11. The external panel according to claim 10, characterized in that: In the air outlet direction of the air outlet, the distance from the side of the blade close to the panel body to the end surface of the cylinder is d, where d≥10 mm.

12. The external panel according to any one of claims 1 to 7, characterized in that: The length L of the annular frame in the air outlet direction of the air outlet is 10mm≤L≤100mm.

13. The external panel according to any one of claims 1 to 7, characterized in that: The panel body is provided with a card interface at the outer edge of the air outlet, and the annular frame is provided with a buckle on the side facing the air outlet, and the buckle is buckled with the card interface.

14. An air conditioner outdoor unit, characterized in that: It comprises the external machine panel as described in any one of claims 1 to 13.

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