Grille structure and air conditioning system having the same

Abstract

The present invention provides a grille structure and an air conditioning system having the same. The grille structure is intended to be installed at a condenser air outlet. The grille structure comprises: a bracket and a top cover, the top cover being installed on top of the bracket; a first annular grille installed below the top cover, the first annular grille being spaced apart from the top cover, the coverage area at the top of the first annular grille being smaller than the coverage area at the bottom of the top cover, and the coverage area of the first annular grille gradually increasing along the direction extending from the top of the first annular grille to the bottom of the first annular grille; the grille structure further comprises: a top heater installed on the inner side of the top cover; and / or a first heater installed on the inner ring of the first annular grille. The technical solution provided by the present invention can solve the technical problem of the prior art in effectively melting snow and ice in snowy and icy weather.

Description

Technical Field

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

[0002] Currently, a car's air conditioning system cools, heats, ventilates, and purifies the cabin air. It provides a comfortable ride for passengers, reduces driver fatigue, and improves driving safety. New energy vehicles, which lack engine heat, typically use heat pumps or positive temperature coefficient (PTC) heating in winter. However, PTCs consume a lot of power, significantly reducing the vehicle's range, and have limitations in their use in new energy vehicles. Consequently, more automakers are opting for heat pumps.

[0003] However, heat pumps are also subject to environmental limitations during use. For example, snow and icy weather can cause snow to completely cover the air outlet of the air conditioner's condenser, preventing ventilation of the condenser. Snow and ice problems can cause the unit to fail to start. During periods of high demand, the air conditioner cannot be used for heating in the vehicle. Currently, snow prevention measures in low-temperature environments are mainly in the system and control logic. When the air conditioner is started, the defrost program is used to use the heat emitted by the fin-tube heat exchanger to melt the snow or ice on the exposed heat exchanger. This method is effective in solving the problem of snow and ice on the heat exchanger. However, the external fan of the bus air conditioner is also exposed to the outside of the entire unit. When the temperature is lower or it snows for a long time, it is very likely that snow and ice will enter the external fan, causing the fan to be unable to rotate, and therefore the unit cannot be turned on for heating. Summary of the Invention

[0004] The main purpose of the present invention is to provide a grille structure and an air-conditioning system having the same, so as to solve the technical problem in the prior art that snow and ice outside the grille structure cannot be effectively removed in snowy and icy weather.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present invention, a grille structure is provided, which is used to be arranged at the condensation outlet, and the grille structure includes: a bracket and a top cover, and the top cover is arranged on the top of the bracket; a first annular grille is arranged below the top cover, and the first annular grille is spaced apart from the top cover, and the covering area at the top end of the first annular grille is smaller than the covering area at the bottom end of the top cover, and the covering area of the first annular grille gradually increases along the extension direction from the top end of the first annular grille to the bottom end of the first annular grille; wherein, the grille structure also includes: a top heating element, which is arranged on the inner side of the top cover; and / or, a first heating element, which is arranged on the inner circle of the first annular grille.

[0006] Furthermore, along the extension direction from the top end of the top cover to the bottom end of the top cover, the covering area of the top cover gradually increases.

[0007] Furthermore, the covering area at the bottom end of the first annular grille is larger than the covering area at the bottom end of the top cover.

[0008] Furthermore, the grille structure also includes: a second annular grille, which is arranged below the first annular grille, the second annular grille is spaced apart from the first annular grille, the covering area at the top end of the second annular grille is smaller than the covering area at the bottom end of the first annular grille, and the covering area of the second annular grille gradually increases along the extension direction from the top end of the second annular grille to the bottom end of the second annular grille.

[0009] Furthermore, the covering area at the bottom end of the second annular grille is larger than the covering area at the bottom end of the first annular grille.

[0010] Furthermore, the grid structure also includes: a second heating element, which is arranged on the inner circle of the second annular grid.

[0011] Furthermore, the tube length of the second heating element is greater than the tube length of the first heating element.

[0012] Furthermore, the first heating element is an annular tube structure; and / or the second heating element is an annular tube structure.

[0013] Furthermore, the grille structure also includes a wind speed detector; the detection head of the wind speed detector is set toward the gap between the top cover and the first annular grille; and / or, the detection head of the wind speed detector is set toward the gap between the first annular grille and the second annular grille.

[0014] Furthermore, the bracket includes: a base, the base is an annular seat structure; a first support rod, a second support rod and a third support rod, the first end of the first support rod, the first end of the second support rod and the first end of the third support rod are all spaced apart on the base, the second end of the first support rod, the second end of the second support rod and the second end of the third support rod are all connected and arranged, so that the first support rod, the second support rod and the third support rod support the first annular grille and the second annular grille.

[0015] Furthermore, the second end of the first support rod, the second end of the second support rod and the second end of the third support rod are connected to form a connecting support end, and the bracket also includes: a supporting upright rod, the bottom end of the supporting upright rod is connected to the connecting support end, and the top cover is arranged on the top end of the supporting upright rod.

[0016] According to another aspect of the present invention, an air conditioning system is provided, comprising: an air conditioner; and a grille structure provided at a condensation air outlet of the air conditioner, wherein the grille structure is the grille structure provided above.

[0017] By applying the technical solution of the present invention, in snowy or icy weather, the top heating element and the first heating element operate simultaneously to heat the outside of the grille structure, melting the snow or ice. The melted water then flows down under the action of the top cover and the first annular grille. Specifically, because the coverage area at the top of the first annular grille is smaller than the coverage area at the bottom of the top cover, and the coverage area of the first annular grille gradually increases from the top of the first annular grille to the bottom of the first annular grille, water on the top cover is prevented from entering the interior of the grille structure and instead flows into the condensation vents to protect the internal structure of the air conditioning system. This also facilitates the smooth flow of water on the top cover down under the guidance of the first annular grille. Therefore, the technical solution provided by the present invention can address the problem in the prior art of being unable to effectively remove snow and ice outside the grille structure in snowy and icy weather. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0019] Figure 1 A schematic structural diagram of a grille structure provided according to an embodiment of the present invention is shown (the arrows in the figure represent the flow direction of airflow);

[0020] Figure 2 An exploded view of a grid structure provided according to an embodiment of the present invention is shown;

[0021] Figure 3 A schematic diagram of installing a grid structure provided according to an embodiment of the present invention is shown.

[0022] The above drawings include the following reference numerals:

[0023] 10. Bracket; 11. Base; 12. First support rod; 13. Second support rod; 14. Third support rod; 15. Support pole; 20. Top cover; 21. Top heating element; 31. First annular grille; 32. Second annular grille; 33. Third annular grille; 34. Fourth annular grille; 41. First heating element; 42. Second heating element; 43. Third heating element; 44. Fourth heating element; 50. Wind speed detector; 60. Grille structure; 70. Air conditioner. DETAILED DESCRIPTION

[0024] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this 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.

[0025] like Figures 1 to 3As shown, the first embodiment of the present invention provides a grille structure 60, which is used to be set at the condensation air outlet, and the grille structure 60 can be set on the top of the air conditioner 70. The grille structure 60 includes a bracket 10, a top cover 20, and a first annular grille 31. The top cover 20 is set on the top of the bracket 10. There is no hollow part on the top cover 20, so that the top cover 20 can effectively cover the air. The first annular grille 31 is set below the top cover 20, and the first annular grille 31 is spaced apart from the top cover 20. The covering area at the top of the first annular grille 31 is smaller than the covering area at the bottom of the top cover 20. The covering area of the first annular grille 31 gradually increases along the extension direction from the top of the first annular grille 31 to the bottom of the first annular grille 31. The grille structure 60 further includes a top heating element 21, which is disposed on the inner side of the top cover 20; alternatively, the grille structure 60 further includes a first heating element 41, which is disposed on the inner ring of the first annular grille 31; alternatively, the grille structure 60 further includes a top heating element 21 and a first heating element 41, with the top heating element 21 disposed on the inner side of the top cover 20 and the first heating element 41 disposed on the inner ring of the first annular grille 31. It should be noted that the coverage area of the first annular grille 31 in this application can be understood as the area corresponding to the outer ring of the first annular grille 31.

[0026] Preferably, in this embodiment, in order to better melt the snow or ice on the outside of the grille structure 60, the grille structure 60 also includes a top heating element 21 and a first heating element 41. The top heating element 21 is arranged on the inner side of the top cover 20, and the first heating element 41 is arranged on the inner circle of the first annular grille 31.

[0027] With the grille structure 60 provided in this embodiment, during snowy or icy weather, the top heating element 21 and the first heating element 41 operate simultaneously to heat the snow or ice outside the grille structure 60. The melted water then flows down the grille structure 60 under the action of the top cover 20 and the first annular grille 31. Specifically, because the coverage area at the top of the first annular grille 31 is smaller than the coverage area at the bottom of the top cover 20, and the coverage area of the first annular grille 31 gradually increases from the top to the bottom of the first annular grille 31, water on the top cover 20 is prevented from entering the grille structure 60 and instead flows into the condensation vents, protecting the internal structures of the air conditioning system. Furthermore, the water on the top cover 20 is facilitated to flow down the grille structure 60 under the guidance of the first annular grille 31. Therefore, the grille structure 60 provided in this embodiment solves the problem of the prior art in effectively removing snow and ice outside the grille structure 60 during snowy or icy weather.

[0028] Specifically, in this embodiment, the coverage area of the top cover 20 gradually increases from the top end to the bottom end of the top cover 20. This allows snow or ice on the top cover 20 to melt and flow more smoothly to the first annular grille 31 below, thereby better guiding the flow. It should be noted that the coverage area of the top cover 20 here can be understood the same as the coverage area of the first annular grille 31.

[0029] Specifically, the covering area at the bottom end of the first annular grille 31 is larger than the covering area at the bottom end of the top cover 20, so as to better block the condensation air outlet and better prevent melted water from entering the air-conditioning system through the condensation air outlet, thereby better protecting the air-conditioning system.

[0030] In this embodiment, the grille structure 60 further includes a second annular grille 32, which is disposed below the first annular grille 31 and spaced apart from the first annular grille 31. The coverage area at the top of the second annular grille 32 is smaller than the coverage area at the bottom of the first annular grille 31, and the coverage area of the second annular grille 32 gradually increases along the direction extending from the top of the second annular grille 32 to the bottom of the second annular grille 32. With this structural arrangement, the addition of the second annular grille 32 facilitates the flow of melted water. Furthermore, the addition of the second annular grille 32 allows the condensation air outlet to communicate with the outside world through the gap between the top cover 20 and the first annular grille 31, as well as the gap between the first annular grille 31 and the second annular grille 32. This ensures better communication between the condensation air outlet and the outside world, allowing air at the condensation air outlet to be normally exchanged with the outside world, thereby ensuring the normal operation of the air conditioning system.

[0031] Specifically, in this embodiment, the bottom end of the second annular grille 32 has a larger coverage area than the bottom end of the first annular grille 31. This structural arrangement can better shield the condensation air outlet, thereby better preventing melted water from entering the air conditioning system through the condensation air outlet, thereby better protecting the air conditioning system.

[0032] In this embodiment, the grid structure 60 further includes a second heating element 42, which is disposed on the inner ring of the second annular grid 32 to better improve the snow and ice melting effect.

[0033] Specifically, the tube length of the second heating element 42 is greater than the tube length of the first heating element 41. Since the average coverage area of the second annular grille 32 is larger than the average coverage area of the first annular grille 31, the tube length of the second heating element 42 is set to be longer to facilitate better heating and snow and ice melting.

[0034] Specifically, the first heating element 41 is an annular tube structure; or the second heating element 42 is an annular tube structure; or both the first heating element 41 and the second heating element 42 are annular tube structures. Preferably, in this embodiment, the first heating element 41 and the second heating element 42 are both annular tube structures to facilitate compatibility with the first annular grille 31 and the second annular grille 32, thereby better heating and melting the snow or ice on the outer wall of the first annular grille 31 and the outer wall of the second annular grille 32 into water, thereby further improving the melting effect.

[0035] In this embodiment, the grille structure 60 further includes an anemometer 50. Specifically, the detection head of the anemometer 50 is positioned toward the gap between the top cover 20 and the first annular grille 31; alternatively, the detection head of the anemometer 50 is positioned toward the gap between the first annular grille 31 and the second annular grille 32; alternatively, the detection head of the anemometer 50 is positioned toward the gap between the top cover 20 and the first annular grille 31, and the detection head of the anemometer 50 is positioned toward the gap between the first annular grille 31 and the second annular grille 32.

[0036] Preferably, one detection head of the wind speed detector 50 in this embodiment (the wind speed detector may have multiple detection heads) is positioned toward the gap between the top cover 20 and the first annular grille 31, and the other detection head of the wind speed detector 50 is positioned toward the gap between the first annular grille 31 and the second annular grille 32. This structural arrangement facilitates better detection of the wind speed between the top cover 20 and the first annular grille 31, as well as the wind speed between the first annular grille 31 and the second annular grille 32, thereby controlling whether to initiate a heating operation based on the wind speed detection results. Specifically, when the wind speed between the top cover 20 and the first annular grille 31, as well as the wind speed between the first annular grille 31 and the second annular grille 32, is detected to be less than a preset value, it can be determined that snow or ice is accumulated in the gap between the top cover 20 and the first annular grille 31, as well as in the gap between the first annular grille 31 and the second annular grille 32. The heating operation is then initiated, causing the top heater 21, the first heater 41, and the second heater 42 to operate simultaneously, or only one or more of them to operate for heating, thereby melting snow or ice. When it is detected that the wind speed between the top cover 20 and the first annular grille 31 and the wind speed between the first annular grille 31 and the second annular grille 32 are less than a preset value, it is determined that the circulation between the top cover 20 and the first annular grille 31 and between the first annular grille 31 and the second annular grille 32 is normal, and there is no snow or ice in the gap between the top cover 20 and the first annular grille 31 and the gap between the first annular grille 31 and the second annular grille 32, and the heating operation is stopped.

[0037] Specifically, the bracket 10 in this embodiment includes a base 11, a first support rod 12, a second support rod 13, and a third support rod 14. The base 11 is an annular seat structure. The base 11, the first support rod 12, the second support rod 13, and the third support rod 14 form a tetrahedral bracket 10 structure. The first end of the first support rod 12, the first end of the second support rod 13, and the first end of the third support rod 14 are spaced apart on the base 11. The second end of the first support rod 12, the second end of the second support rod 13, and the second end of the third support rod 14 are connected to each other so that the first support rod 12, the second support rod 13, and the third support rod 14 support the first annular grille 31 and the second annular grille 32. Using such a support structure can improve the stability of the support, thereby better supporting the top cover 20, the first annular grille 31, and the second annular grille 32.

[0038] Specifically, in this embodiment, the second end of the first support rod 12, the second end of the second support rod 13, and the second end of the third support rod 14 are connected to form a connecting support end. The bracket 10 further includes a support rod 15, the bottom end of which is connected to the connecting support end. A top cover 20 is disposed on the top end of the support rod 15. This structural arrangement facilitates better separation of the top cover 20 from the other annular grille structures 60 and improves the compactness of the structural arrangement and installation.

[0039] Specifically, the annular grilles in this embodiment are not limited to the first annular grille 31 and the second annular grille 32, and may also include a third annular grille 33, a fourth annular grille 34, a fifth annular grille, a sixth annular grille, a seventh annular grille, and the like. Furthermore, the structures of the third annular grille 33, the fourth annular grille 34, the fifth annular grille, the sixth annular grille, and the seventh annular grille are identical to those of the first annular grille 31 and the second annular grille 32. The number of annular grilles provided may be selected based on specific practical circumstances. Specifically, the first annular grille 31, the second annular grille 32, the third annular grille 33, the fourth annular grille 34, the fifth annular grille, the sixth annular grille, and the seventh annular grille have no hollowed-out portions to facilitate effective covering. Accordingly, the heating structure also includes structures such as a third heating element 43, a fourth heating element 44, a fifth heating element, a sixth heating element, and a seventh heating element.

[0040] In this embodiment, the top cover 20, first annular grille 31, second annular grille 32, and other structures can all be made of metal to facilitate heat conduction, allowing heat generated by the heating structure to be more quickly transferred to the top cover 20, first annular grille 31, and second annular grille 32, thereby facilitating better snow and frost melting. The top heating element 21, first heating element 41, and second heating element 42 can all include heating wire structures.

[0041] This embodiment provides a low-cost air conditioner snowproof grille and snow removal method, which enables the air conditioner to automatically remove snow and prevent foreign objects from entering, ensures sufficient air flow to improve heat exchange efficiency, and enhances user experience. The grille structure 60 in this embodiment is a "fish scale" grille.

[0042] The key innovation of this invention lies in the fact that the air deflector and the "fish-scale" grille are integrally stamped into a ring shape and fixed to a tetrahedron bracket 10. This protects against flying objects such as leaves from any direction while driving, and also prevents rain and snow from falling directly onto the fragile condenser fins during heavy rain and snow. Furthermore, an electric heating copper tube hidden behind the grille, when powered, can remove snow without shutting down the air conditioner.

[0043] The present invention has no movable parts (except for the anemometer), resulting in low cost, easy maintenance, and a reliable structure. The mounting holes on the base 11 can be adjusted to match the size of the cooling fan holes, enabling non-destructive installation and greatly facilitating after-sales maintenance. It can be installed on heat pump air conditioners such as buses, tourist buses, and rail trains that require winter snow protection and snow removal.

[0044] Specifically, the annular "fish-scale" grille, unlike ordinary Venetian blinds, houses an air guide structure and an electric copper tube (heating structure). When the cooling fan is stationary, the air is directed to the surrounding area by the air guide plate. The central wind from the axial fan is significantly weaker than the surrounding wind. Therefore, the annular grille (including the first and second annular grilles 31, 32, and other structures) can guide most of the wind from the air conditioner condenser outlet.

[0045] like Figure 1 As shown, the grille structure 60 of this embodiment has a snow-proof function. The triangular pyramidal shape formed by the stacked, annular "fish-scale" grilles allows snow to slide off automatically under the action of gravity, effectively preventing large amounts of snow from accumulating on the annular grilles. The grille structure 60 of this embodiment also has a snow-removal function. In winter, before starting the car, the driver turns on the air conditioning heating mode. At this time, the snow-removal mode is activated. When the anemometer detects that the wind speed at the annular grille outlet is less than a preset lower limit, it automatically determines that the outlet is blocked by snow and automatically activates the electric heating snow-removal mode. Because the grille is made of metal, its surface friction coefficient is low, and metal conducts heat better than ordinary materials. When the annular grille is heated, a lubricating water layer forms between the snow and the annular grille. Unmelted snow blocks slide off under the combined effects of airflow from the annular grille outlet and gravity. Once the snow is cleared, the anemometer detects an increase in wind speed at the annular grille outlet. When the wind speed reaches its preset upper limit, the air conditioner disconnects the electric heating switch, completing the snow removal. This control strategy can realize automatic snow removal, significantly reduce the required heating energy consumption, improve the effective utilization of thermal energy, and reduce operating costs.

[0046] like Figure 2As shown in the exploded view in FIG, the internal frame of the present invention is constructed using a tetrahedron structure, thereby achieving maximum strength with minimal material, and the manufacturing process is simpler and easier to operate.

[0047] like Figure 3 As shown in the installation renderings, since the external structure adopts a bionic "fish scale" principle, it can effectively block leaves, rain, hail and other debris falling from all directions in a natural state even without electricity, thereby effectively protecting the condenser heat dissipation fins.

[0048] Specifically, the angle and spacing of the annular "fish-scale" grille can be modified to other values based on the installation dimensions. Four or more tetrahedral brackets 10 are used, and the electric heating copper tubes are replaced with electric heating mesh or electric heating film. The annular "fish-scale" grille can be replaced with a "fish-scale" grille in other geometric shapes, such as diamond, triangle, or square.

[0049] A second embodiment of the present invention provides an air conditioning system, which includes an air conditioner 70 and a grille structure 60 . The grille structure 60 is provided at the condensation air outlet of the air conditioner 70 . The grille structure 60 is the grille structure 60 provided in the above embodiment.

[0050] From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: the "fish-scale" grille is made of metal material with excellent thermal conductivity, and is built with multiple layers of electric heating copper tubes. When powered on, a lubricating film can be formed between the snow and frost attached to it and the grille, and the film will automatically slide down under the action of gravity. Due to the use of the "fish-scale" bionic structure, the vehicle can effectively block the obstruction of leaves and foreign objects whether it is driving or parked, and can ensure that there must be enough snow to completely block the grille outlet. The grille has a built-in anemometer. In heavy snow weather, when the wind speed at the air outlet is lower than the lower limit, the system determines that the grille is covered with snow, and the electric heating wire automatically heats up to melt the snow without manual intervention. The grille can be installed non-destructively on the upper part of the air outlet of most existing air-outlet condensers without changing the original air-conditioning structure.

[0051] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0052] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to actual proportional relationships. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values should be interpreted as being merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0053] In the description of this application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of this application; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0054] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0055] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0056] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A grid structure, characterized in that: The grid structure is used to be arranged at the condensation air outlet, and the grid structure includes: A bracket (10) and a top cover (20), wherein the top cover (20) is arranged on the top of the bracket (10); a first annular grille (31) disposed below the top cover (20), the first annular grille (31) being spaced apart from the top cover (20), the covering area at the top end of the first annular grille (31) being smaller than the covering area at the bottom end of the top cover (20), and the covering area of the first annular grille (31) gradually increasing along an extension direction from the top end of the first annular grille (31) to the bottom end of the first annular grille (31); Wherein, the grid structure further includes: a top heating element (21), arranged on the inner side of the top cover (20); and / or, A first heating element (41) is arranged on the inner ring of the first annular grid (31); The grille structure further comprises a wind speed detector (50), wherein a detection head of the wind speed detector (50) is arranged toward the gap between the top cover (20) and the first annular grille (31); When it is detected that the wind speed between the top cover (20) and the first annular grille (31) is less than a preset value, it is determined that snow or ice is present in the gap between the top cover (20) and the first annular grille (31), and a heating operation is started; The top heating element (21) is an annular tube structure; and / or the first heating element (41) is an annular tube structure; The bracket (10) comprises: A base (11), wherein the base (11) is an annular base structure; A first support rod (12), a second support rod (13) and a third support rod (14), wherein the first end of the first support rod (12), the first end of the second support rod (13) and the first end of the third support rod (14) are spaced apart and arranged on the base (11); and the second end of the first support rod (12), the second end of the second support rod (13) and the second end of the third support rod (14) are connected and arranged so that the first support rod (12), the second support rod (13) and the third support rod (14) support the first annular grille (31).

2. The grid structure according to claim 1, characterized in that: Along the extension direction from the top end of the top cover (20) to the bottom end of the top cover (20), the covering area of the top cover (20) gradually increases.

3. The grid structure according to claim 1, characterized in that The covering area at the bottom end of the first annular grille (31) is larger than the covering area at the bottom end of the top cover (20).

4. The grid structure according to claim 1, characterized in that The grid structure further comprises: The second annular grille (32) is arranged below the first annular grille (31), the second annular grille (32) and the first annular grille (31) are spaced apart, the covering area at the top end of the second annular grille (32) is smaller than the covering area at the bottom end of the first annular grille (31), and the covering area of the second annular grille (32) gradually increases along the extending direction from the top end of the second annular grille (32) to the bottom end of the second annular grille (32).

5. The grid structure according to claim 4, characterized in that: The covering area at the bottom end of the second annular grille (32) is larger than the covering area at the bottom end of the first annular grille (31).

6. The grid structure according to claim 4, characterized in that: The grid structure further comprises: The second heating element (42) is arranged on the inner ring of the second annular grid (32).

7. The grid structure according to claim 6, characterized in that: The tube length of the second heating element (42) is greater than the tube length of the first heating element (41).

8. The grid structure according to claim 6, characterized in that: The second heating element (42) is an annular tube structure.

9. The grid structure according to any one of claims 4 to 8, characterized in that The detection head of the wind speed detector (50) is arranged toward the gap between the first annular grille (31) and the second annular grille (32).

10. The grid structure according to any one of claims 4 to 8, characterized in that The first support rod (12), the second support rod (13), and the third support rod (14) support the second annular grid (32).

11. The grid structure according to claim 10, characterized in that: The second end of the first support rod (12), the second end of the second support rod (13), and the second end of the third support rod (14) are connected to form a connecting support end, and the bracket (10) further includes: A supporting upright pole (15), wherein the bottom end of the supporting upright pole (15) is connected to the connecting support end, and the top cover (20) is arranged on the top end of the supporting upright pole (15).

12. An air conditioning system, characterized in that: The air conditioning system comprises: air conditioner; A grille structure is provided at the condensation air outlet of the air conditioner, wherein the grille structure is the grille structure according to any one of claims 1 to 11.

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