Grid structure and air conditioner with same

Abstract

The invention provides a grille structure and an air conditioner with the grille structure. The grille structure comprises a center supporting piece, a plurality of supporting pieces and a plurality of connecting pieces, the first supporting piece is arranged around the central supporting piece; the second supporting piece is arranged on the outer side of the first supporting piece, and the first supporting piece and the second supporting piece are concentrically arranged; the first circumferential rib assembly is arranged between the central supporting piece and the first supporting piece, the first circumferential rib assembly is arranged in the circumferential direction of the central supporting piece, and the first circumferential rib assembly extends along a first spiral track; and the second circumferential rib assembly is arranged between the first supporting piece and the second supporting piece, the second circumferential rib assembly is arranged in the circumferential direction of the first supporting piece, and the second circumferential rib assembly extends along a second spiral track. According to the air conditioner outdoor unit, the problem that in the prior art, noise generated when airflow passes through a grating structure of an air conditioner outdoor unit is large is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular to a grille structure and an air conditioner having the grille structure. Background Art

[0002] At present, with the continuous growth of demand for air-conditioning systems, higher requirements are placed on noise control during their operation. As an important part of the air-conditioning system, the heat dissipation performance and noise level of the outdoor unit directly affect the user experience and system efficiency.

[0003] At present, in order to promote air flow and heat dissipation, a grille structure is set on the outdoor unit. However, when the wind speed changes or under certain conditions, the grille structure and the airflow are prone to resonate, causing resonance noise. The air guide method of the grille may also form vortices, further aggravating the noise problem and reducing the operating efficiency of the equipment. Summary of the invention

[0004] The main purpose of the present invention is to provide a grille structure and an air conditioner having the same, so as to solve the problem that the grille structure of the air conditioner outdoor unit in the prior art generates a large amount of noise when air flows through.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, there is provided a grid structure, comprising: a central support member; a first support member, arranged around the central support member; a second support member, arranged on the outside of the first support member, the first support member and the second support member being arranged concentrically; a first circumferential rib assembly, arranged between the central support member and the first support member, the first circumferential rib assembly being arranged along the circumferential direction of the central support member, and the first circumferential rib assembly extending along a first spiral trajectory; a second circumferential rib assembly, arranged between the first support member and the second support member, the second circumferential rib assembly being arranged along the circumferential direction of the first support member, and the second circumferential rib assembly extending along a second spiral trajectory.

[0006] Furthermore, the first circumferential rib assembly includes: a plurality of first circumferential ribs, each first circumferential rib including a first connecting end and a second connecting end, the first connecting end being connected to the central support member, and the second connecting end being connected to the first support member; the first connecting ends of each first circumferential rib are spaced apart along the circumferential direction of the central support member, and each first circumferential rib extends along a first spiral trajectory respectively.

[0007] Furthermore, the distance between two adjacent first circumferential ribs is A, and the equation of the spiral line where the first spiral trajectory is located is:

[0008] L1: X=A / pi*cos(t), Y=A / pi*sin(t);

[0009] Among them, the range of t is 0~20pi.

[0010] Furthermore, the second circumferential rib assembly includes: a plurality of second circumferential ribs, each second circumferential rib including a third connection end and a fourth connection end, the third connection end is connected to the first support member, and the fourth connection end is connected to the second support member; the third connection end of each second circumferential rib is spaced apart along the circumferential direction of the first support member, and each second circumferential rib extends along the second spiral trajectory respectively.

[0011] Furthermore, the distance between two adjacent second circumferential ribs is B, and the equation of the spiral line where the second spiral trajectory is located is:

[0012] L2: X=B / pi*cos(t), Y=B / pi*sin(t);

[0013] Among them, the range of t is 0~20pi.

[0014] Further, the first circumferential rib assembly includes a plurality of first circumferential ribs, the plurality of first circumferential ribs are arranged at intervals along the circumferential direction of the central support member, each of the first circumferential ribs extends along a first spiral trajectory, and the distance between two adjacent first circumferential ribs is A; the second circumferential rib assembly includes a plurality of second circumferential ribs, the plurality of second circumferential ribs are arranged at intervals along the circumferential direction of the first support member, each of the second circumferential ribs extends along a second spiral trajectory, and the distance between two adjacent second circumferential ribs is B; wherein, A>B.

[0015] Furthermore, the grid structure also includes: a first radial rib extending in the radial direction of the second support member, the first radial rib including a fifth connection end and a sixth connection end, the fifth connection end being connected to the central support member, the sixth connection end being connected to the second support member, and taking the axial direction of the central support member as the height direction, the height of the first radial rib gradually increases from the fifth connection end to the sixth connection end; there are multiple first radial ribs, and the multiple first radial ribs are spaced apart along the circumferential direction of the central support member, and each first radial rib is respectively connected to the first circumferential rib assembly and the second circumferential rib assembly.

[0016] Further, the first radial rib includes a windward end surface and a leeward end surface, the width of the windward end surface is greater than the width of the leeward end surface; one end of the windward end surface and one end of the leeward end surface are connected through a first guide side surface, and the other end of the windward end surface and the other end of the leeward end surface are connected through a second guide side surface;

[0017] The angle between the leeward end surface and the first flow-guiding side surface is α, and the range of the angle α is 95° to 135°;

[0018] The included angle between the leeward end surface and the second flow-guiding side surface is β, and the range of the included angle β is 93° to 140°.

[0019] Furthermore, in the direction from the fifth connection end to the sixth connection end, the first radial rib extends along a predetermined trajectory, and the function equation of the curve where the predetermined trajectory is located is:

[0020] X(t)=(C_X)(1-t1)^3+3*(D_X)(1-t1)^2*t1+3*(E_X)(1-t1)*t1^2+(F_X)*t1^3;

[0021] Y(t)=(C_Y)(1-t1)^3+3*(D_Y)(1-t1)^2*t1+3*(E_Y)(1-t1)*t1^2+(F_Y)*t1^3;

[0022] Among them, (C_X, C_Y, D_X, D_Y, E_X, E_Y, F_X, F_Y) are the coordinates of the feature points;

[0023] The range of t1 is 0 to 1.

[0024] Furthermore, the grid structure also includes: second radial ribs, the second radial ribs include a seventh connection end and an eighth connection end, the seventh connection end is connected to the first support member, and the eighth connection end is connected to the second support member; there are multiple second radial ribs, and the multiple second radial ribs are arranged at intervals along the circumferential direction of the first support member, and each second radial rib is respectively connected to the second circumferential rib assembly, and each second radial rib and each first radial rib are alternately arranged in sequence along the circumferential direction of the first support member.

[0025] According to another aspect of the present invention, an air conditioner is provided, comprising an air conditioner outdoor unit and a grille structure, wherein the grille structure is arranged on the air conditioner outdoor unit, and the grille structure is the above-mentioned grille structure.

[0026] According to the technical solution of the present invention, the grille mechanism includes a central support, a first support, a second support, a first circumferential rib assembly and a second circumferential rib assembly, wherein the first support is arranged around the central support; the second support is arranged on the outside of the first support, and the first support is arranged concentrically with the second support; wherein the central support, the first support and the second support are all arranged concentrically, the first circumferential rib assembly is arranged between the central support and the first support, the first circumferential rib assembly is arranged along the circumferential direction of the central support, and the first circumferential rib assembly extends along the first spiral track; the second circumferential rib assembly is arranged between the first support and the second support, the second circumferential rib assembly is arranged along the circumferential direction of the first support, and the second circumferential rib assembly extends along the second spiral track. The design that the first circumferential rib assembly and the second circumferential rib assembly extend along the first spiral track and the second spiral track respectively effectively disperses and weakens the vibration force and reduces the noise caused by resonance. The geometric layout of the spiral line allows the sound wave energy to be dispersed and absorbed multiple times during the propagation process, thereby significantly reducing the generation of resonance noise and improving the quiet operation performance of the entire air-conditioning system. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0028] Figure 1 A schematic diagram showing the distribution of the first circumferential ribs and the second circumferential ribs of the grid structure according to the present invention is shown;

[0029] Figure 2 A schematic structural diagram of an embodiment of a grid structure according to the present invention is shown;

[0030] Figure 3 shows a first cross-sectional view of a first radial rib in a grid structure according to the present invention;

[0031] Figure 4 A second cross-sectional view of a first radial rib or a second radial rib in a grid structure according to the present invention is shown.

[0032] The above drawings include the following reference numerals:

[0033] 100, central support member; 200, first support member; 300, second support member; 400, first circumferential rib assembly; 410, first circumferential rib; 411, first connection end; 412, second connection end; 500, second circumferential rib assembly; 510, second circumferential rib; 511, third connection end; 512, fourth connection end; 600, first radial rib; 610, fifth connection end; 620, sixth connection end; 630, windward end face; 640, leeward end face; 650, first guide side face; 660, second guide side face; 700, second radial rib; 710, seventh connection end; 720, eighth connection end. DETAILED DESCRIPTION

[0034] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0035] As mentioned in the background technology, in the existing grille structure of the air conditioner outdoor unit, the air flow resonates with the grille structure during the outlet process, which leads to an increase in the noise of the air conditioner outdoor unit. In addition, the grille wind guide may also form vortices, further aggravating the noise problem and reducing the operating efficiency of the equipment. In response to the above problems, in the prior art, noise is reduced by optimizing the blade shape, introducing sound-absorbing materials, etc., but the above methods do not completely control the problems of resonance and eddy noise. Therefore, in the grille structure provided in the present application, a first circumferential rib assembly 400 and a second circumferential rib assembly 500 are provided, and the first circumferential rib assembly 400 extends along a first spiral trajectory, and the second circumferential rib assembly 500 extends along a second spiral trajectory, which helps to disperse and weaken the vibration force, effectively break up the propagation path of the resonance wave, reduce the resonance effect, and thus significantly reduce the noise caused by resonance.

[0036] Please refer to Figures 1 to 4 The present application provides a grid structure, including: a central support member 100; a first support member 200, which is arranged around the central support member 100; a second support member 300, which is arranged on the outside of the first support member 200, and the first support member 200 and the second support member 300 are arranged concentrically; a first circumferential rib assembly 400, which is arranged between the central support member 100 and the first support member 200, the first circumferential rib assembly 400 is arranged along the circumferential direction of the central support member 100, and the first circumferential rib assembly 400 extends along a first spiral trajectory; a second circumferential rib assembly 500, which is arranged between the first support member 200 and the second support member 300, the second circumferential rib assembly 500 is arranged along the circumferential direction of the first support member 200, and the second circumferential rib assembly 500 extends along a second spiral trajectory.

[0037] According to the grid mechanism provided by the present application, it includes a central support member 100, a first support member 200, a second support member 300, a first circumferential rib assembly 400 and a second circumferential rib assembly 500, wherein the first support member 200 is arranged around the central support member 100; the second support member 300 is arranged on the outside of the first support member 200, and the first support member 200 and the second support member 300 are arranged concentrically; wherein the central support member 100, the first support member 200 and the second support member 300 are all arranged concentrically, The first circumferential rib assembly 400 is arranged between the central support member 100 and the first support member 200, and the first circumferential rib assembly 400 is arranged along the circumferential direction of the central support member 100, and the first circumferential rib assembly 400 extends along the first spiral track; the second circumferential rib assembly 500 is arranged between the first support member 200 and the second support member 300, and the second circumferential rib assembly 500 is arranged along the circumferential direction of the first support member 200, and the second circumferential rib assembly 500 extends along the second spiral track. The design that the first circumferential rib assembly 400 and the second circumferential rib assembly 500 extend along the first spiral track and the second spiral track respectively effectively disperses and weakens the vibration force and reduces the noise caused by resonance. The geometric layout of the spiral line allows the sound wave energy to be dispersed and absorbed multiple times during the propagation process, thereby significantly reducing the generation of resonance noise and improving the quiet operation performance of the entire air-conditioning system.

[0038] Specifically, Figure 1 and Figure 2 As shown, the first circumferential rib assembly 400 includes: a plurality of first circumferential ribs 410, each of which includes a first connection end 411 and a second connection end 412, the first connection end 411 is connected to the central support member 100, and the second connection end 412 is connected to the first support member 200; the first connection end 411 of each first circumferential rib 410 is arranged at intervals along the circumferential direction of the central support member 100, and each first circumferential rib 410 extends along a first spiral track. The two ends of the first circumferential rib 410 are connected to the central support member 100 and the first support member 200, respectively. This structural design increases the strength and stability of the grille. The spirally distributed ribs are similar to spider webs or spring structures, which can absorb and disperse external impact forces to a certain extent, reduce structural vibration, and improve overall durability. The arrangement of the spiral track can effectively disperse the airflow, reduce the vortex and resonance formed when the airflow passes through the ribs, and thus reduce the operating noise. Especially at high speeds, this design can significantly reduce the noise caused by irregular airflow, creating a quieter environment for users. The design of the first circumferential rib 410 along the spiral trajectory can guide the airflow to be more evenly distributed, avoid local airflow concentration, and improve heat dissipation efficiency. Uniform airflow distribution not only helps reduce noise, but also enhances the heat exchange capacity of the air conditioning system and improves cooling or heating efficiency.

[0039] Preferably, there are three first circumferential ribs 410 , and the three first circumferential ribs 410 are evenly spaced along the circumferential direction of the central support member 100 , and the three first circumferential ribs 410 are centrally symmetrical.

[0040] In the present application, the distance between two adjacent first circumferential ribs 410 is A, and the equation of the spiral line where the first spiral trajectory is located is:

[0041] L1: X=A / pi*cos(t), Y=A / pi*sin(t);

[0042] The range of t is 0 to 20pi. The t value is specifically limited according to the grid center, the grid fixing structure, and the starting size of the outer ring layer.

[0043] Parameter A is the distance between two adjacent first circumferential ribs 410. Through precise calculation and optimization, the airflow guiding effect and structural stability of the grille at different positions can be ensured. Specifically, the special geometric distribution of the spiral line can effectively interfere with the propagation path of the resonance wave, reduce vibration, and reduce the noise caused by vibration. At the same time, by controlling the size of A, a balance can be found between ensuring the strength of the grille and the smoothness of the air duct, avoiding the impact on air volume or the generation of additional noise due to the grille being too dense or sparse.

[0044] In specific implementation, Figure 1As shown, the second circumferential rib assembly 500 includes: a plurality of second circumferential ribs 510, each of which includes a third connection end 511 and a fourth connection end 512, the third connection end 511 is connected to the first support member 200, and the fourth connection end 512 is connected to the second support member 300; the third connection end 511 of each second circumferential rib 510 is arranged at intervals along the circumferential direction of the first support member 200, and each second circumferential rib 510 extends along the second spiral track. By arranging each second circumferential rib 510 at intervals along the circumferential direction and extending along the second spiral track, this design can effectively disperse the impact force of the airflow, avoid the airflow resonating with the grille at the same frequency, and thus significantly reduce the noise caused by the resonance. The spiral track of the second circumferential rib 510 can guide the airflow to pass through the grille in a smoother manner, reduce the eddy current and disturbance generated by the airflow when passing through the grille, further reduce the noise level, and at the same time ensure the fluidity of the airflow without hindering heat dissipation. The second circumferential rib 510 is connected to the first support member 200 through the third connection end 511 and the fourth connection end 512 is connected to the second support member 300. Such a structural design increases the overall stability of the grille, prevents structural deformation in strong winds or long-term operation, and ensures the long-term use effect of the grille. The design of the second circumferential rib assembly 500 enhances the control of noise by increasing the reflection and absorption surface of sound waves. In particular, by adjusting the spacing and shape of the ribs, the noise of a specific frequency can be reduced in a targeted manner, thereby improving the overall noise reduction effect.

[0045] Preferably, there are three second circumferential ribs 510 , and the three second circumferential ribs 510 are centrally symmetrically arranged.

[0046] The distance between two adjacent second circumferential ribs 510 is B, and the equation of the spiral line where the second spiral trajectory is located is:

[0047] L2: X=B / pi*cos(t), Y=B / pi*sin(t);

[0048] The range of t is 0 to 20pi. The t value is specifically limited according to the grid center, the grid fixing structure, and the starting size of the outer ring layer.

[0049] By controlling the spacing B of the second circumferential ribs 510 and the distribution of the spiral lines, such a design helps to optimize the guidance and dispersion of the airflow while ensuring the structural strength, and reduce the vortex and noise generated when the airflow passes through the grille.

[0050] In the present application, the first circumferential rib assembly 400 includes a plurality of first circumferential ribs 410, which are arranged at intervals along the circumferential direction of the central support member 100, each of which extends along a first spiral track, and the distance between two adjacent first circumferential ribs 410 is A; the second circumferential rib assembly 500 includes a plurality of second circumferential ribs 510, which are arranged at intervals along the circumferential direction of the first support member 200, each of which extends along a second spiral track, and the distance between two adjacent second circumferential ribs 510 is B; wherein A>B. Since the rib spacing of the first circumferential rib assembly 400 is large, it can effectively reduce the high-frequency noise generated when the motor is running, because the large spacing can reduce the reflection frequency of the sound wave in the grille, thereby weakening the resonance effect. At the same time, the smaller spacing of the second circumferential rib assembly 500 can increase the reflection surface of the sound waves, further disperse and reduce the sound wave energy, and reduce the eddy noise. The design of the larger spacing of the first circumferential rib assembly 400 has less resistance to the airflow, which can ensure that the airflow flows freely without adding additional resistance, which helps to increase the overall air volume of the air conditioning system, thereby improving the cooling efficiency. The dense design of the second circumferential rib assembly 500 can better guide the airflow, reduce the eddy current of the airflow when passing through the grille, make the airflow smoother, and further optimize the airflow efficiency. The stability of the entire grille structure is enhanced by the spiral distribution of the first circumferential ribs and the second circumferential ribs. Similar to a spider web structure, this design can effectively absorb and disperse the vibration on the grille, reduce the structural resonance caused by wind force, and thus reduce noise and vibration under strong wind conditions.

[0051] In the embodiments provided in this application, Figure 2As shown, the grille structure further includes: a first radial rib 600 extending in the radial direction of the second support member 300, the first radial rib 600 including a fifth connection end 610 and a sixth connection end 620, the fifth connection end 610 being connected to the central support member 100, the sixth connection end 620 being connected to the second support member 300, and the height of the first radial rib 600 gradually increasing from the fifth connection end 610 to the sixth connection end 620, with the axial direction of the central support member 100 as the height direction; there are a plurality of first radial ribs 600, and the plurality of first radial ribs 600 are arranged at intervals along the circumferential direction of the central support member 100, and each first radial rib 600 is respectively connected to the first circumferential rib assembly 400 and the second circumferential rib assembly 500. The height of the first radial rib 600 gradually increases along its extension direction, and this gradual design can guide and optimize the airflow distribution without increasing additional wind resistance, reduce the turbulence and vortex formed when the airflow passes through the grille, and thus effectively increase the air volume. The increase in air volume helps to strengthen the heat exchange of the air conditioning system and improve the cooling or heating efficiency. The first radial rib 600 is effectively connected with the first circumferential rib assembly 400 and the second circumferential rib assembly 500 to form a complex airflow channel structure. This structure can effectively disperse and absorb the sound wave energy generated by the airflow passing through the grille, reduce resonance and resonance noise, and provide a quieter working environment for users. The two ends of the first radial rib 600 are respectively connected to the central support member 100 and the second support member 300, and its multiple ribs are spaced along the circumferential direction. This design increases the number of support points of the grille structure, improves the stability and wind pressure resistance of the overall structure, and ensures the performance and safety of the grille under various environmental conditions. The gradual height design of the first radial rib 600 and the connection with the circumferential rib assembly form a complex but orderly airflow guide path. This design helps to guide the airflow through the heat sink more evenly, avoid local airflow being too strong or too weak, thereby improving the heat dissipation efficiency and reducing the risk of equipment overheating.

[0052] During the specific implementation process, the first radial rib 600 includes a windward end face 630 and a leeward end face 640, the width of the windward end face 630 is greater than the width of the leeward end face 640; one end of the windward end face 630 and one end of the leeward end face 640 are connected through a first guide side surface 650, and the other end of the windward end face 630 and the other end of the leeward end face 640 are connected through a second guide side surface 660; wherein, the angle between the leeward end face 640 and the first guide side surface 650 is α, and the range of the angle α is 95° to 135°; the angle between the leeward end face 640 and the second guide side surface 660 is β, and the range of the angle β is 93° to 140°. The widened design of the windward end face 630 forms an unequal width structure with the leeward end face 640, which helps to conduct preliminary guidance and adjustment when the airflow enters, so that the airflow can pass through the entire grille structure more smoothly and evenly, reduce the collision and turbulence of the airflow, and thus reduce noise generation. The specific angle connection between the first guide side 650 and the second guide side 660 can effectively guide the flow direction of the airflow, and avoid the formation of vortices when the airflow passes through the radial ribs. The range selection of the angles α and β (95° to 135° and 93° to 140°, respectively) can make the airflow smoothly transition between the guide side and the leeward end face, reduce airflow separation, and further reduce noise. The width of the windward end face 630 is greater than that of the leeward end face 640. This design reduces wind resistance, allows the airflow to pass through the grille structure more smoothly, increases the air volume and wind speed, and thus reduces energy consumption while maintaining a good heat dissipation effect.

[0053] Preferably, in the direction from the fifth connection end 610 to the sixth connection end 620, the first radial rib 600 extends along a predetermined trajectory, and the function equation of the curve where the predetermined trajectory is located is:

[0054] X(t)=(C_X)(1-t1)^3+3*(D_X)(1-t1)^2*t1+3*(E_X)(1-t1)*t1^2+(F_X)*t1^3;

[0055] Y(t)=(C_Y)(1-t1)^3+3*(D_Y)(1-t1)^2*t1+3*(E_Y)(1-t1)*t1^2+(F_Y)*t1^3;

[0056] Among them, (C_X, C_Y, D_X, D_Y, E_X, E_Y, F_X, F_Y) are the coordinates of the feature points;

[0057] The range of t1 is 0 to 1.

[0058] The design of the first radial rib 600 extending along a predetermined trajectory utilizes the mathematical model of Bernstein polynomials, which can accurately control the shape and position of the first radial rib 600, so that it can better adapt to the air duct structure and airflow guidance requirements of the air conditioner outdoor unit, and achieve better aerodynamic performance. Among them, (C_X, C_Y, F_X, F_Y) are respectively at the edge of the grille center support member 100 and the edge of the second support member 300 of the grille.

[0059] Furthermore, the grid structure also includes: second radial ribs 700, the second radial ribs 700 include a seventh connection end 710 and an eighth connection end 720, the seventh connection end 710 is connected to the first support member 200, and the eighth connection end 720 is connected to the second support member 300; there are multiple second radial ribs 700, and the multiple second radial ribs 700 are arranged at intervals along the circumferential direction of the first support member 200, and each second radial rib 700 is respectively connected to the second circumferential rib assembly 500, and each second radial rib 700 and each first radial rib 600 are alternately arranged in sequence along the circumferential direction of the first support member 200. The second radial ribs 700 and the first radial ribs 600 are arranged alternately in the circumferential direction, increasing the lateral support of the grille. This staggered layout is similar to a reinforcement net, which can effectively disperse the impact of wind on the grille and enhance the structural strength of the entire grille. Through the connection with the second circumferential rib assembly 500, the second radial ribs 700 can not only guide the airflow to flow in the radial direction, but also cooperate with the first circumferential rib assembly 400 and the first radial ribs 600 to optimize the airflow path, reduce the collision and eddy current of the airflow on the grille, thereby reducing air resistance, increasing air volume, and having a positive impact on the cooling efficiency and noise control of the air conditioning system. The second radial ribs 700, together with the first circumferential ribs and the first radial ribs, form a more sophisticated grille network, which can not only more effectively control the direction of the airflow, but also further disperse the sound waves and enhance the noise control effect.

[0060] The present application also provides an air conditioner, including an air conditioner outdoor unit and a grille structure, wherein the grille structure is arranged on the air conditioner outdoor unit, and the grille structure is the grille structure of the above embodiment.

[0061] The design combines radial grilles and circumferential grilles, and the specially introduced rear guide vane design (i.e., using the first radial rib as a guide vane) optimizes the airflow path, reduces the formation of vortices, avoids the attenuation of air volume, and ensures smooth air flow, thereby improving the air volume and heat dissipation efficiency of the air conditioning system. The increase in air volume helps to improve the cooling efficiency of the air conditioner, while the improvement in heat dissipation efficiency helps to keep the temperature of the motor and key components within a safe range, extending the service life of the air conditioner. The inner and outer layer design of the grille assembly, especially the different layout of the inner and outer circumferential grilles, not only increases the complexity of the structure, but also effectively improves the overall structural strength and stability of the grille. The design principle similar to the spider web structure enables the grille to maintain structural integrity and rigidity even under the impact of high-speed airflow, reducing deformation or damage due to wind force, thereby improving the operating stability and reliability of the air conditioner outdoor unit.

[0062] In the grid structure of the present application, the spiral line arrangement of the circumferential ribs: through precise calculation, the grid lines are distributed according to the spiral line. This layout can effectively break up the propagation path of the resonance wave, thereby reducing the resonance effect.

[0063] Radial rib (rear guide vane) setting: guide vanes are added to the grille air inlet surface. The shape and angle of the guide vanes are optimized to effectively guide the airflow, reduce vortex generation, and thus reduce noise. At the same time, the addition of guide vanes also ensures sufficient airflow, maintains heat dissipation efficiency, and avoids system overheating.

[0064] Through the innovation of the above-mentioned key technologies, this application aims to provide an efficient and economical solution for the field of noise control of household air-conditioning systems, aiming to simultaneously improve user experience and environmental protection effects, and contribute to building a quieter and more environmentally friendly living environment.

[0065] The existing patent CN111288563A proposes a double spiral rib grille structure. Starting from the center, the spacing increases continuously. In order to meet the safety regulations of the experimental index, more radial grilles must be installed, which in turn affects the air volume and noise parameters.

[0066] At the same time, numerical simulation and prototype testing were carried out for the respective solutions, and the tests had good results. The test results are as follows:

[0067]

[0068] 1. The grille currently has a significant impact on fan performance. The grille of a household outdoor unit currently has a 7% reduction in air volume at the same speed. The grille in this application reduces the air volume by 3.2% at the same speed, with significant effects on air volume increase and noise reduction.

[0069] 2. After installing the rear guide vanes, the efficiency is increased by 5.3% based on the original fan efficiency, which reduces the fan power by 2W at 800rpm, effectively reducing the fan operating power and saving more energy.

[0070] On the existing basis, by increasing the inner ring circumferential grid distance, it is possible to save a certain amount of material and cost while meeting the test conditions of the experimental index.

[0071] The use of inner and outer spiral circumferential grille design can effectively reduce the amplitude of structural resonance and effectively reduce structural vibration (similar to a spider web structure, effectively absorbing vibration).

[0072] In terms of air duct structure, the design of unequal thickness rear guide vanes is adopted to effectively improve the fan efficiency by 5.3%. It increases air volume, reduces noise, reduces motor power, and the overall performance of the machine is excellent.

[0073] 1) Characteristics and methods of circumferential grille distribution based on spiral lines: The circumferential grilles of the inner layer and the outer machine are designed respectively. In the inner layer, the grille spacing is large due to the dense structure distribution and high strength. At the same time, the structure layout in the outer layer is loose, and the spacing is encrypted to meet the strength requirements. It adopts a circumferential double-layer spiral line arrangement, which can effectively reduce the high-frequency noise of motor rotation in the inner layer. In the outer layer, due to the encryption, the sound wave reflection surface is increased, the sound wave energy is reduced, and the eddy current noise is reduced. In the present application, the inner layer is between the central support member 100 and the first support member 200, and the outer layer is between the first support member 200 and the second support member 300.

[0074] 2) Radial grille characteristics and methods based on rear guide vanes: For low-pressure axial flow fans, axial flow rear guide vanes can effectively improve fan efficiency and reduce fan noise. This proposal innovatively combines rear guide vanes with grilles, adopts a gradient unequal thickness rear guide vane design, and combines it with radial grilles to achieve the best effect.

[0075] The reason why the grille is divided into two layers is that when the circumferential grille occupies the main structure, the radial grille starts from the center of the grille to the grille fixed structure. In the outer layer of the grille, the spacing is too large, resulting in failure to pass the safety finger test, and the radial grille needs to be denser at a certain position. Therefore, a second radial rib is added to the outer circumferential grille to improve the overall structural strength of the grille.

[0076] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0077] According to the grid mechanism provided by the present application, it includes a central support member 100, a first support member 200, a second support member 300, a first circumferential rib assembly 400 and a second circumferential rib assembly 500, wherein the first support member 200 is arranged around the central support member 100; the second support member 300 is arranged on the outside of the first support member 200, and the first support member 200 and the second support member 300 are arranged concentrically; wherein the central support member 100, the first support member 200 and the second support member 300 are all arranged concentrically, The first circumferential rib assembly 400 is arranged between the central support member 100 and the first support member 200, and the first circumferential rib assembly 400 is arranged along the circumferential direction of the central support member 100, and the first circumferential rib assembly 400 extends along the first spiral track; the second circumferential rib assembly 500 is arranged between the first support member 200 and the second support member 300, and the second circumferential rib assembly 500 is arranged along the circumferential direction of the first support member 200, and the second circumferential rib assembly 500 extends along the second spiral track. The design that the first circumferential rib assembly 400 and the second circumferential rib assembly 500 extend along the first spiral track and the second spiral track respectively effectively disperses and weakens the vibration force and reduces the noise caused by resonance. The geometric layout of the spiral line allows the sound wave energy to be dispersed and absorbed multiple times during the propagation process, thereby significantly reducing the generation of resonance noise and improving the quiet operation performance of the entire air-conditioning system.

[0078] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A grid structure, characterized in that: include: A central support member (100); A first support member (200) is disposed around the central support member (100); A second support member (300) is arranged outside the first support member (200), and the first support member (200) and the second support member (300) are arranged concentrically; a first circumferential rib assembly (400) disposed between the central support member (100) and the first support member (200), the first circumferential rib assembly (400) being arranged along a circumferential direction of the central support member (100), and the first circumferential rib assembly (400) extending along a first spiral track; A second circumferential rib assembly (500) is disposed between the first support member (200) and the second support member (300), the second circumferential rib assembly (500) is arranged along the circumferential direction of the first support member (200), and the second circumferential rib assembly (500) extends along a second spiral trajectory.

2. The grid structure according to claim 1, characterized in that: The first circumferential rib assembly (400) comprises: a plurality of first circumferential ribs (410), each of the first circumferential ribs (410) comprising a first connecting end (411) and a second connecting end (412), the first connecting end (411) being connected to the central support member (100), and the second connecting end (412) being connected to the first support member (200); The first connecting ends (411) of each of the first circumferential ribs (410) are arranged at intervals along the circumferential direction of the central support member (100), and each of the first circumferential ribs (410) extends along a first spiral trajectory.

3. The grid structure according to claim 2, characterized in that: The distance between two adjacent first circumferential ribs (410) is A, and the equation of the spiral line where the first spiral trajectory is located is: L1: X=A / pi*cos(t), Y=A / pi*sin(t); Among them, the range of t is 0~20pi.

4. The grid structure according to claim 1, characterized in that: The second circumferential rib assembly (500) comprises: a plurality of second circumferential ribs (510), each of the second circumferential ribs (510) comprising a third connecting end (511) and a fourth connecting end (512), the third connecting end (511) being connected to the first supporting member (200), and the fourth connecting end (512) being connected to the second supporting member (300); The third connecting ends (511) of each of the second circumferential ribs (510) are arranged at intervals along the circumferential direction of the first support member (200), and each of the second circumferential ribs (510) extends along a second spiral trajectory.

5. The grid structure according to claim 4, characterized in that: The distance between two adjacent second circumferential ribs (510) is B, and the equation of the spiral line where the second spiral trajectory is located is: L2: X=B / pi*cos(t), Y=B / pi*sin(t); Among them, the range of t is 0~20pi.

6. The grid structure according to claim 1, characterized in that: The first circumferential rib assembly (400) comprises a plurality of first circumferential ribs (410), the plurality of first circumferential ribs (410) being arranged at intervals along the circumferential direction of the central support member (100), each of the first circumferential ribs (410) extending along a first spiral track, and a distance between two adjacent first circumferential ribs (410) being A; The second circumferential rib assembly (500) comprises a plurality of second circumferential ribs (510), the plurality of second circumferential ribs (510) being arranged at intervals along the circumferential direction of the first support member (200), each of the second circumferential ribs (510) extending along a second spiral track, and a distance between two adjacent second circumferential ribs (510) being B; Among them, A>B.

7. The grid structure according to claim 1, characterized in that: The grid structure further comprises: a first radial rib (600) extending in a radial direction of the second support member (300), the first radial rib (600) comprising a fifth connection end (610) and a sixth connection end (620), the fifth connection end (610) being connected to the central support member (100), the sixth connection end (620) being connected to the second support member (300), and the axial direction of the central support member (100) being the height direction. In a direction from the fifth connecting end (610) to the sixth connecting end (620), the height of the first radial rib (600) gradually increases; There are a plurality of the first radial ribs (600), and the plurality of the first radial ribs (600) are arranged at intervals along the circumferential direction of the central support member (100), and each of the first radial ribs (600) is respectively connected to the first circumferential rib assembly (400) and the second circumferential rib assembly (500).

8. The grid structure according to claim 7, characterized in that: The first radial rib (600) comprises a windward end surface (630) and a leeward end surface (640), and the width of the windward end surface (630) is greater than the width of the leeward end surface (640); One end of the windward end surface (630) and one end of the leeward end surface (640) are connected via a first flow guiding side surface (650), and the other end of the windward end surface (630) and the other end of the leeward end surface (640) are connected via a second flow guiding side surface (660); Wherein, the angle between the leeward end surface (640) and the first flow-guiding side surface (650) is α, and the range of the angle α is 95° to 135°; The included angle between the leeward end surface (640) and the second flow-guiding side surface (660) is β, and the range of the included angle β is 93° to 140°.

9. The grid structure according to claim 7, characterized in that: In the direction from the fifth connection end (610) to the sixth connection end (620), the first radial rib (600) extends along a predetermined trajectory, and the function equation of the curve where the predetermined trajectory lies is: X(t)=(C_X)(1-t1)^3+3*(D_X)(1-t1)^2*t1+3*(E_X)(1-t1)*t1^2+(F_X)*t1^3; Y(t)=(C_Y)(1-t1)^3+3*(D_Y)(1-t1)^2*t1+3*(E_Y)(1-t1)*t1^2+(F_Y)*t1^3; Among them, (C_X, C_Y, D_X, D_Y, E_X, E_Y, F_X, F_Y) are the coordinates of the feature points; The range of t1 is 0 to 1.

10. The grid structure according to claim 7, characterized in that: The grid structure further comprises: a second radial rib (700), the second radial rib (700) comprising a seventh connection end (710) and an eighth connection end (720), the seventh connection end (710) being connected to the first support member (200), and the eighth connection end (720) being connected to the second support member (300); There are a plurality of second radial ribs (700), and the plurality of second radial ribs (700) are arranged at intervals along the circumferential direction of the first support member (200). Each of the second radial ribs (700) is respectively connected to the second circumferential rib assembly (500), and each of the second radial ribs (700) and each of the first radial ribs (600) are alternately arranged in sequence along the circumferential direction of the first support member (200).

11. An air conditioner, comprising an air conditioner outdoor unit and a grille structure, wherein the grille structure is arranged on the air conditioner outdoor unit, characterized in that: The grid structure is the grid structure according to any one of claims 1 to 10.

Images