Panel assembly, outdoor unit, and heating, ventilation and air-conditioning apparatus

Abstract

Disclosed in the present application are a panel assembly, an outdoor unit, and a heating, ventilation and air-conditioning apparatus. The panel assembly comprises a panel and a mesh cover, wherein the panel is provided with an air outlet; and the mesh cover comprises a frame body and an air output grille, the frame body being connected to the panel and being provided with an air vent corresponding to the air outlet, and the air output grille being connected to the frame body and covering the air vent. A drainage channel is formed on the side of the mesh cover facing the panel, the drainage channel at least partially being located on the frame body, and the drainage channel being configured to discharge condensate water falling on the mesh cover and / or the panel out of the frame body. The technical solution of the present application enables condensate water at the bottom of the air vent to be discharged.

Description

Panel components, outdoor units and HVAC equipment Technical Field

[0001] The present application relates to the technical field of HVAC equipment, and in particular to a panel assembly, an outdoor unit and HVAC equipment. Background Art

[0002] During the heat exchange process between the outdoor unit and the refrigerant, condensed water is generated on the heat exchanger. Driven by the airflow generated by the impeller, the condensed water is easily blown out. When it drips onto the air outlet grille located in the middle of the exhaust vent, the airflow from the middle of the exhaust vent is very fast, and the wind force is sufficient to carry this part of the condensed water out. However, if the condensed water drips onto the air outlet grille located at the bottom of the exhaust vent, problems are likely to occur. Because the air volume at the bottom of the exhaust vent is relatively low, this part of the condensed water cannot be blown out and is prone to accumulation. Especially in low temperature environments, the accumulated condensed water easily freezes, forming an ice layer and causing the exhaust vent to be blocked. Summary of the Invention

[0003] The embodiments of the present application provide a panel assembly, an outdoor unit, and HVAC equipment that can discharge condensed water at the bottom of the exhaust vent.

[0004] In the first aspect, an embodiment of the present application provides a panel assembly, comprising a panel and a mesh cover, wherein the panel is provided with an air outlet; the mesh cover comprises a frame and an air outlet grille; the frame is connected to the panel and is provided with an exhaust port corresponding to the air outlet; the air outlet grille is connected to the frame and covers the exhaust port; wherein a drainage channel is formed on the side of the mesh cover facing the panel, and the drainage channel is at least partially on the frame, and the drainage channel is used to discharge condensed water falling on the mesh cover and / or the panel to the outside of the frame.

[0005] In a possible implementation, the drainage channel includes a drain port and a flow guide channel that are connected to each other, at least a portion of the flow guide channel is located on the frame, and the drain port is connected to the air outlet.

[0006] In a possible implementation, the drainage channel includes a drainage port, and the drainage port is connected to the lowest point of the air outlet.

[0007] In a possible implementation, the air outlet grille includes edge ribs extending along the periphery of the air outlet, and the edge ribs protrude from a surface of the frame facing the panel;

[0008] Wherein, the drain outlet is provided on the edge rib.

[0009] In a possible implementation, the edge ribs are arranged around the air outlet, and the edge ribs surround the outer side of the air outlet;

[0010] Wherein, the portion of the edge rib below the air outlet is provided with the drain outlet.

[0011] In a possible implementation, the drain port passes through the inner circumference and the outer circumference of the edge rib in the up-down direction.

[0012] In a possible implementation, the drain outlet passes through the edge rib and faces the end surface of the panel.

[0013] In a possible implementation, a portion of the inner circumferential surface of the edge rib located at the bottom of the air outlet is formed as a guide surface, and the guide surface is inclined downward in a direction from the frame to the panel;

[0014] The drain port passes through the guide surface.

[0015] In a possible implementation, the width of the drain outlet in the direction from the frame to the panel is defined as d1, and the width of the edge rib in the direction from the frame to the panel is defined as d2.

[0016] Among them, 1≥d1 / d2≥0.5.

[0017] In one possible implementation, d1 ≥ 5 mm.

[0018] In a possible implementation, the projected length of the portion of the edge rib below the air outlet on the horizontal plane is defined as L1, and the projected length of the drain outlet on the horizontal plane is defined as L2;

[0019] Among them, the ratio of L2 to L1 ranges from 1:15 to 1:10.

[0020] In a possible implementation, a surface of the panel facing the mesh cover is further recessed to form a groove, and the groove is connected to the air outlet;

[0021] The edge ribs are embedded in the groove, and there are gaps between the edge ribs and the bottom wall and side walls of the groove.

[0022] In a possible implementation, a plurality of reinforcing ribs are provided on a surface of the frame facing the panel;

[0023] There are at least two reinforcing ribs spaced apart and cooperating with the frame to define the flow guide channel.

[0024] Based on the panel assembly of the embodiment of the present application, during the process of heat exchange of the refrigerant by the outdoor unit, condensed water is generated on the heat exchanger. Driven by the airflow generated by the wind wheel, the condensed water is easily blown out. When the condensed water drops on the air outlet grille located in the middle of the exhaust port. Because the airflow outflowing from the middle of the exhaust port is at a high speed, the wind force is sufficient to carry out this part of the condensed water. However, when the condensed water falls on the air outlet grille at the bottom of the exhaust port 330 or on the frame of the mesh cover, the condensed water is not easy to discharge and is prone to accumulation. In this way, in an environment with a lower temperature, the accumulated condensed water is easy to freeze and form an ice layer, which can easily cause the exhaust port to be blocked. The present application provides a drainage channel on the side of the mesh cover facing the panel, so that the condensed water accumulated on the mesh cover can be discharged.

[0025] In a second aspect, an embodiment of the present application provides an outdoor unit comprising the above-mentioned panel assembly.

[0026] In a third aspect, an embodiment of the present application provides a HVAC device comprising the above-mentioned outdoor unit and an indoor unit forming a refrigerant circulation path with the outdoor unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0028] FIG1 is a schematic structural diagram of a panel assembly combined with a wind wheel according to an embodiment of the present invention;

[0029] FIG2 is a front view of the structure shown in FIG1 ;

[0030] FIG3 is a rear view of the structure shown in FIG1 ;

[0031] FIG4 is a cross-sectional view along AA in FIG3 ;

[0032] Figure 5 is an enlarged view of point B in Figure 4;

[0033] FIG6 is a schematic structural diagram of a mesh cover according to an embodiment of the present invention;

[0034] FIG7 is an enlarged view of point C in FIG6 .

[0035] Explanation of the accompanying figures: 10. Panel assembly; 100. Panel; 110. Air outlet; 200. Air guide ring; 300. Mesh cover; 310. Frame; 320. Air outlet grille; 321. Edge rib; 322. First connecting rib; 323. Second connecting rib; 324. Reinforcing rib; 325. Guide surface; 330. Air outlet; 400. Drainage channel; 410. Drainage outlet; 420. Guide channel; 500. Wind wheel. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of this application clearer, the following part will further describe the embodiments of this application in detail with reference to the accompanying drawings.

[0037] When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application, as detailed in the appended claims.

[0038] In the description of this application, it should be understood that the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances. In addition, in the description of this application, unless otherwise specified, "multiple" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the previous and subsequent associated objects are in an "or" relationship.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "and / or" as used herein includes any and all combinations of one or more of the relevant listed items.

[0040] Referring to Figures 1 and 2 , the present application provides a panel assembly 10, an outdoor unit, and HVAC equipment. HVAC equipment includes, but is not limited to, air conditioners, VRFs, heat pumps, water heaters, and swimming pool units. For example, a HVAC device using a refrigerant as the heating medium and water as the heating target includes an outdoor unit (not shown) and an indoor unit (not shown) that forms a refrigerant circulation path with the outdoor unit.

[0041] Specifically, the indoor unit may include components such as a heat exchanger, a water pump, an electric heating device, and an energy storage tank. These components are connected by water pipes to form a water circulation path. The heat exchanger has two inlets and two outlets. One set of interconnected inlets and outlets is for the refrigerant to pass through, and the other set of interconnected inlets and outlets is for the water medium to pass through. When the water medium flows through the heat exchanger, the refrigerant in the heat exchanger comes into contact with the water, thereby heating the water. The water pump provides the power for the water circulation. The electric heating device can reheat the water heated by the heat exchanger and transport it to the energy storage tank through water pipes, thereby meeting the user's heating needs.

[0042] The outdoor unit may include components such as an evaporator, a compressor, a heat exchanger, and an expansion valve, all of which are connected in a circular loop via refrigerant pipes. When the HVAC equipment is operating, the refrigerant in the evaporator absorbs heat from the air, turning it into a high-temperature, low-pressure gas. The compressor then compresses this high-temperature gas, turning it into a high-temperature, high-pressure liquid. This high-temperature, high-pressure liquid exchanges heat with water in the water circulation circuit through a heat exchanger, raising the water temperature and turning the refrigerant into a low-temperature, high-pressure liquid. The low-temperature, high-pressure liquid then passes through the expansion valve and becomes a low-temperature, low-pressure gas, which then circulates back to the evaporator, completing the refrigerant cycle.

[0043] The outdoor unit also includes a shell and a wind wheel 500. The shell serves as an outer shell for loading the above-mentioned wind wheel 500, evaporator, compressor, heat exchanger, expansion valve and other components, and can protect these components. The wind wheel 500 accelerates the circulation of surrounding air by rotating to form an airflow, thereby improving the heat exchange efficiency of the refrigerant. There is no limitation on the specific shape of the shell here. Designers can make reasonable designs according to actual needs. For example, the shell can be, but is not limited to, a flat rectangular structure. Of course, there is no limitation on the specific preparation material of the shell here. Designers can make reasonable choices according to actual needs. For example, the preparation material of the shell can be, but is not limited to, plastic or metal. And it can be understood that for fan equipment with different specific forms, the design of the shell shape and the selection of preparation materials are also different.

[0044] The housing has air vents, including an air inlet and an air outlet 110. The air inlet is an opening for allowing external air to flow into the housing. The air flowing into the housing forms the aforementioned airflow under the action of the rotation of the impeller 500. The air outlet 110 allows the generated airflow to flow out of the housing. The panel assembly 10 provided in this embodiment of the present application is provided with the aforementioned air outlet 110, which is enclosed with other panel components to form the aforementioned housing.

[0045] It should be noted that the panel assembly 10 of the embodiment of the present application can be a front panel assembly 10 or a side panel assembly 10. Technicians in this field can install the panel assembly 10 according to the position of the air outlet 110 designed for the shell. Here, the present application does not limit the specific installation position of the panel assembly 10 on the shell.

[0046] Please refer to FIG. 1 and FIG. 2 , and the specific structure of the panel assembly 10 will now be introduced in detail. The panel assembly 10 includes a panel 100 and a mesh cover 300 .

[0047] The panel 100 is provided with the aforementioned air outlet 110. The specific shape of the air outlet 110 is not limited here, and designers can reasonably design it according to actual needs. For example, the air outlet 110 can be circular or rectangular. In addition, the specific manufacturing material of the panel 100 is not limited here, and it can be, but is not limited to, plastic or metal. The air outlet 110 can be formed on the panel 100 by injection molding, 3D printing, or stamping, or can be formed on the panel 100 by cutting and grinding. This application does not limit this.

[0048] In order to improve the stability of the airflow discharged from the exhaust port 330 by the rotation of the wind wheel 500, please refer to Figures 1 and 3. An air guide ring 200 is also connected to the panel 100. The air guide ring 200 is connected to the air outlet 110, wherein the above-mentioned wind wheel 500 can be located inside the air guide ring 200. The air guide ring 200 can guide the airflow to pass smoothly from the wind wheel 500 and connect to the air outlet 110, effectively reducing the generation of airflow fluctuations and turbulence, and improving the stability of airflow discharge. This helps to improve the working efficiency of the exhaust port 330 and ensure that the discharged gas flow is more uniform and stable. The air guide ring 200 reduces the degree of turbulence of the airflow by guiding the airflow and discharging it smoothly, thereby reducing the generation of noise and vibration.

[0049] To prevent condensation from accumulating at the bottom of the air guide ring 200, a guide portion (not shown) is formed at the bottom of the air guide ring 200, sloping downward in the direction of the airflow. This allows condensation to flow along the slope of the guide portion and drain toward the exterior of the panel 100, preventing it from accumulating at the bottom of the air guide ring 200 and potentially forming an ice layer. Furthermore, a draft angle can be set for the air guide ring 200 to facilitate demolding during injection molding and to facilitate molding the guide portion.

[0050] The mesh cover 300 includes a frame 310 and an air outlet grille 320. The frame 310 serves as a carrier of the mesh cover 300 and is used to connect to the panel 100. The frame 310 is provided with an exhaust port 330 corresponding to the air outlet 110. The specific shape of the frame 310 is not limited here. For example, the frame 310 has a cross-section perpendicular to the flow direction of the airflow, and the outer contour line of the cross-section can be, but is not limited to, a quasi-circular, quasi-square or quasi-rectangular shape. The specific preparation material of the frame 310 can be, but is not limited to, plastic or metal, and the exhaust port 330 can be formed on the frame 310 by injection molding or 3D printing, or can be formed on the frame 310 by cutting and grinding. This application does not limit this.

[0051] Of course, the specific connection method between the frame 310 and the panel 100 is not limited here. The frame 310 can be connected to the panel 100 through one or more methods such as, but not limited to, screw connection or snap connection. Designers can make reasonable choices based on actual needs. This application also does not limit the specific shape of the exhaust vent 330. For example, the exhaust vent 330 can be roughly circular or rectangular. Designers can make reasonable designs based on actual needs.

[0052] As shown in Figures 1 and 2, the air outlet grille 320 is connected to the frame 310 and at least partially covers the exhaust port 330. The air outlet grille 320 serves as a fence structure for the mesh cover 300, ensuring air circulation while also protecting the impeller 500. A drainage channel 400 is formed on the side of the mesh cover 300 facing the panel 100. The drainage channel 400 is at least partially disposed on the frame 310 and is used to drain condensed water that falls on the mesh cover 300, the panel 100, or both, to the outside of the frame 310.

[0053] It should be noted that in the process of heat exchange of the refrigerant by the outdoor unit, condensed water is generated on the heat exchanger. Driven by the airflow generated by the wind wheel 500, the condensed water is easily blown out. When the condensed water drops on the air outlet grille 320 located in the middle of the exhaust port 330. Because the airflow outflowing from the middle of the exhaust port 330 is at a high speed, the wind force is sufficient to carry out this part of the condensed water. However, when the condensed water falls on the air outlet grille 320 at the bottom of the exhaust port 330 or falls on the frame 310 of the mesh cover 300, the condensed water is not easy to discharge and is prone to accumulation. In this way, in an environment with a lower temperature, the accumulated condensed water is easy to freeze and form an ice layer, which can easily cause the exhaust port 330 to be blocked.

[0054] Therefore, based on the panel assembly 10 of the embodiment of the present application, a drainage channel 400 is provided on the side of the mesh cover 300 facing the panel 100. During the operation of the outdoor unit, the condensed water generated on the heat exchanger is blown outward by the airflow generated by the wind wheel 500, and further falls on the mesh cover 300. It can be effectively discharged to the outside of the frame 310 through the drainage channel 400. In this way, in a low temperature environment, the condensed water falling on the mesh cover 300 is not easy to freeze due to stagnation and cause the exhaust port 330 to be blocked, thereby ensuring that the outdoor unit of the present application can continue to operate stably in a low temperature environment.

[0055] Typically, the outer diameter of the exhaust port 330 can be greater than or equal to the outer diameter of the air outlet 110. In this case, condensed water first falls on the air outlet grille 320 and then flows to the outside after passing through the frame 310 area. Therefore, the drainage channel 400 of the present application is connected to the exhaust port 330, so that the condensed water retained on the portion of the air outlet grille 320 outside the exhaust port 330 can be drained. In addition, the drainage channel 400 can be connected to the lowest point of the exhaust port 330, so that gravity can be effectively utilized to fully drain the condensed water. Of course, the location where the drainage channel 400 connects to the exhaust port 330 can also be not at the lowest point, but can be connected to the lower part of the exhaust port 330 and any other location above the lowest point. In other words, the drainage channel 400 can be partially located within the area of ​​the exhaust port 330, or the drainage channel 400 can be connected to the edge of the exhaust port 330.

[0056] Of course, the outer diameter of the exhaust port 330 can also be set to be smaller than the outer diameter of the air outlet 110. In this case, the condensed water falling on the exhaust port 330 area, that is, the air outlet grille 320, will be blown away by the fan. At this time, the drainage channel 400 of the present application is mainly used to discharge the condensed water falling on the frame 310. At this time, the drainage channel 400 is mainly set in the frame 310. Of course, in this case, the drainage channel 400 can also be connected to the exhaust port 330 at the same time.

[0057] Next, the solution of the present application will be further introduced based on the situation that the outer diameter of the exhaust port 330 of the present application is greater than or equal to the outer diameter of the air outlet 110.

[0058] Furthermore, in order to improve the structural strength of the air outlet 330 and reduce the tendency of the airflow blown out by the impeller 500 to diffuse outward, the air outlet grille 320 of the present application may include edge ribs 321 surrounding the circumference of the air outlet 330. The edge ribs 321 protrude from the surface of the frame 310 facing the panel 100 in the direction from the frame 310 to the panel 100, that is, the gap between the edge ribs 321 and the panel 100 is smaller. When the outer diameter of the exhaust port 330 is greater than or equal to the outer diameter of the air outlet 110, if condensed water drops on the edge rib 321 located at the bottom of the exhaust port 330, due to the small gap between the edge rib 321 and the panel 100, and the small air volume at the bottom of the exhaust port 330, this part of the condensed water is difficult to be blown out or discharged. Therefore, the condensed water drops at this part are easy to freeze and connect with the panel 100 to form a larger water accumulation surface, which is easy to cause condensed water to accumulate, resulting in large-scale ice formation, and then easily causing the exhaust port 330 to be blocked.

[0059] The present application provides a drainage channel 400 on the mesh cover 300. Specifically, the drainage channel 400 includes a drainage port 410, which is used to connect to the exhaust port 330. The drainage port 410 is provided at the lowest point of the edge rib 321. During operation, when condensed water falls on the air outlet grille 320 located in the upper middle portion of the exhaust port 330, this part of the condensed water will be blown out by the air flow of the fan. However, when the condensed water falls on the air outlet grille 320 located in the lower portion of the exhaust port 330, the air flow effect of the fan on this part is relatively small. Under the action of gravity, this part of the condensed water will flow toward the lowest point of the exhaust port 330. Therefore, by providing the drainage port 410 at the lowest point of the edge rib 321, the condensed water can be fully discharged to the outside.

[0060] It should be noted that the specific shape of the above-mentioned edge ribs 321 can be determined according to the shape of the exhaust port 330, such as circular or rectangular, and the edge ribs 321 are at least partially surrounded by the bottom area of ​​the exhaust port 330, or can be surrounded by the entire exhaust port 330.

[0061] As exemplarily shown in FIG6 , in an embodiment of the present application, a drain port 410 is provided on the bottom of the edge rib 321. Specifically, when the edge rib 321 is configured as a quasi-circular shape, the bottom of the circular rib presents an arc surface structure, and the drainage channel 400 can be provided at the six o'clock direction of these circular ribs. In this way, condensed water can flow along the arc surface to the six o'clock direction of the circular rib under the action of gravity and be discharged through the drain port 410. In addition, when the edge rib 321 is approximately rectangular, the frame edge structure can also provide the rectangular ribs with a certain inclination angle in the height direction. In this case, one or more drain ports 410 can be provided in the lowest point area of ​​the frame edge structure in the height direction.

[0062] Of course, the drain outlet 410 does not need to be located at the lowest point of the edge rib 321. If the drain outlet 410 is not located at the lowest point of the edge rib 321, then once condensed water accumulates at the bottom of the edge rib 321 and reaches a certain level, the condensed water that meets the height of the drain outlet 410 can also be discharged through the drain outlet 410. In this way, only a small area at the bottom of the exhaust vent 330 is covered with ice, while the majority of the exhaust vent 330 can still ensure airflow, thus ensuring stable operation of the outdoor unit. It will be understood that when the drainage channel 400 only includes the drain outlet 410 and is located on the edge rib 321, the drain outlet 410 does not overlap with the inner surface of the frame 310 facing the panel 100 in the vertical direction. That is, in the air outlet direction, there is a gap between the drain outlet 410 and the inner surface of the frame 310 facing the panel 100. In this way, the condensed water is discharged directly from the frame 310 area under the action of gravity without contacting the inner surface of the frame 310 facing the panel 100.

[0063] In other embodiments, the drainage channel 400 may include two connected parts: a drain outlet 410 and a guide channel 420, wherein the guide channel 420 is located on the frame 310, and the drain outlet 410 is connected to the exhaust outlet 330. In this embodiment, an edge rib 321 may also be provided, and the drain outlet 410 is provided on the edge rib 321, and the drain outlet 410 may be provided at the lowest point of the edge rib 321 or other positions outside the lowest point. At this time, the condensed water is discharged to the outside of the frame 310 through the drain outlet 410 and the guide channel 420 in sequence.

[0064] In this embodiment, the drain port 410 may partially overlap with the inner surface of the frame 310 facing the panel 100 in the vertical direction. In this case, the flow guide 420 may be recessed from the inner wall of the frame 310 .

[0065] Furthermore, in order to improve the structural strength of the mesh cover 300, a plurality of reinforcing ribs 324 are provided on the surface of the frame 310 facing the panel 100. The presence of these reinforcing ribs 324 can effectively increase the bending rigidity and tensile strength of the mesh cover 300.

[0066] In this embodiment, the guide channel 420 can be formed by the above-mentioned reinforcing ribs 324 and the surface of the frame 310 facing the panel 100. For example, at least two reinforcing ribs 324 on the frame 310 can be enclosed together with the frame 310 to form the guide channel 420. Furthermore, by designing the extension direction of the reinforcing rib 324, the reinforcing rib 324 has a drainage surface, and the drainage surface can guide the condensed water to flow along a predetermined path. In this way, the condensed water can be discharged through the predetermined drainage area and then collected and processed through the water receiving tray, which can effectively prevent the condensed water from dripping into other equipment or areas. Of course, it can also be formed by a single reinforcing rib 324, that is, the guide channel 420 is formed by the recess of the reinforcing rib 324.

[0067] Of course, when the reinforcing ribs 324 are provided, the drain outlet 410 may also be arranged so as not to overlap with the inner surface of the frame 310 facing the panel 100 in the vertical direction. However, if the reinforcing ribs 324 partially overlap the drain outlet 410 in the vertical direction, the reinforcing ribs 324 and the drain outlet 410 may be staggered in the width direction of the mesh cover 300, that is, the reinforcing ribs 324 are arranged on both sides of the drain outlet 410. In this way, the condensed water can be discharged smoothly through the drain outlet 410, and the drainage surface on the reinforcing ribs 324 can also drain the condensed water. Of course, a guide groove may also be provided on the reinforcing ribs 324 located at the lower part of the drain outlet 410. The opening direction of the guide groove may be set upward, or it may be set perpendicular to the inner surface of the frame 310, as long as the condensed water can flow into the guide groove when discharged from the drain outlet 410 and be discharged to the outside through the guide groove.

[0068] Furthermore, referring to Figure 7 , a gap exists between the upper end of the reinforcing rib 324 below the drain outlet 410 and the lower surface of the edge rib 321. This arrangement ensures that condensed water can flow freely and unimpeded through the drain outlet 410 and reduces the risk of clogging of the drain outlet 410. If there were a gap between the upper end of the reinforcing rib 324 below the drain outlet 410 and the lower surface of the edge rib 321, condensed water or impurities would be easily supported by the upper end of the reinforcing rib 324 when draining through the drain outlet 410, thereby being blocked or accumulating there.

[0069] It should be noted that when condensed water accumulates at the bottom of the air guide ring 200, the condensed water can flow outward along the guide portion. During the free fall, some of the condensed water may fall into the area of ​​the drain port 410 and be directly discharged outward. Of course, during the free fall, some of the condensed water may fall onto the mesh cover 300. In this case, it can be discharged using the solution described above. In this way, the drainage channel 400 of the embodiment of the present application can also discharge condensed water accumulated on the panel 100.

[0070] The drain outlet 410 of the present application can have various structural forms. In some structural forms, the drain outlet 410 can be a drainage groove (not shown) formed on the edge rib 321. The drainage groove extends vertically through the inner and outer circumferences of the edge rib 321 and through the end face of the edge rib 321 facing the panel 100. That is, the drainage groove is provided on the edge rib 321 and is located between the panel 100 and the frame 310. In this way, condensed water at the bottom of the air guide ring 200 can flow along the guide portion to the drainage groove and be discharged from the drainage groove, while condensed water at the air outlet grille 320 at the bottom of the air outlet 330 can also flow to the drainage groove and be discharged from the drainage groove. Moreover, the form of the drainage groove can reduce the surface tension between the condensed water and the edge rib 321, thereby making it easier for the condensed water to drain from the drainage groove. In addition, the drainage groove is simple to process. It can be integrally injection molded into the edge rib 321, or it can be formed on the edge rib 321 by cutting, stamping, or other methods.

[0071] When the drainage groove is injection molded on the edge rib 321, the opening width of the drainage groove is set to be smaller in the direction from the panel 100 to the frame 310. In this way, the groove walls on both sides of the produced drainage groove have a certain inclination angle, so that the mesh cover 300 can be easily demolded and the defective rate in the production process is reduced.

[0072] To further improve the drainage efficiency of the drain grooves, as shown in Figures 4 and 5, a gap is provided between the edge ribs 321 and the outer circumference of the panel 100, and the notches of the drain grooves communicate with the gap. This increases the gap between the edge ribs 321 where the drain grooves are located and the panel 100, allowing condensed water to be effectively drained.

[0073] To further explain, during operation of the impeller 500, wind is discharged through the exhaust port 330 of the mesh cover 300, and some of the airflow acts on the air outlet grille 320, causing the mesh cover 300 to vibrate. If there were no gap between the mesh cover 300 and the panel 100, the mesh cover 300 would easily collide with the panel 100 during vibration, thereby easily generating abnormal noise. Therefore, in the embodiment of the present application, providing a gap between the mesh cover 300 and the panel 100 can facilitate the discharge of condensed water while also reducing noise.

[0074] Furthermore, because the air blown out by the impeller 500 tends to diffuse outward, in some structural embodiments, edge ribs 321 serve as barriers to restrict airflow. These ribs 321 are disposed around the periphery of the air outlet 330 and extend from the frame 310 toward the panel 100. This arrangement allows the edge ribs 321 to form a barrier to prevent airflow from diffusing, effectively reducing the tendency of the air blown out by the impeller 500 to diffuse outward. In other words, relative to the other components of the screen 300, the edge ribs 321 are the components closest to the panel 100. Therefore, there is a gap between the edge ribs 321 and the outer circumference of the panel 100. This also means that, except for the connection between the two components, there is a gap between the screen 300 and the panel 100. In other embodiments, the edge ribs 321 are not the components of the screen 300 closest to the panel 100, and other components of the screen 300 should also have a gap between them and the panel 100.

[0075] In terms of the direction of airflow, the closer the airflow is to the wind wheel 500, the smaller the angle of outward diffusion. To further improve the stability of the airflow restriction by the edge ribs 321, a groove is formed on the outer peripheral surface of the panel 100. The groove surrounds the outside of the air outlet 110 and is connected to the air outlet 110, and the edge ribs 321 are embedded in the groove. In this way, the end of the edge rib 321 closest to the panel 100 can be closer to the wind wheel 500, thereby more effectively constraining the flow direction of the airflow. In addition, the distance over which the wind acts on the edge ribs 321 can be reduced, thereby reducing the resonant frequency of the structure, thereby improving the smoothness and quietness of the system's operation.

[0076] It is understandable that there is the above-mentioned gap between the edge rib 321 and the bottom wall of the groove and the side wall of the groove. It is worth noting that the gap between the edge rib 321 and the bottom wall of the groove and the side wall of the groove realizes that the edge rib 321 and the panel 100 avoid collision and abnormal noise, and also realizes the effective discharge of condensed water. Of course. Taking into account the effective restriction of airflow by the edge rib 321, this gap cannot be set too large, otherwise it will cause the airflow to leak easily from the gap and may generate noise. Therefore, the present application can also effectively discharge condensed water by setting a drainage groove while the size of the gap is not particularly large to ensure effective restriction of the airflow.

[0077] In order to effectively ensure that the condensed water is discharged from the drain groove, the specific dimensions of the drain outlet 410 discussed above and below can be set with reference to the following content. The width dimension of the drain outlet 410 in the direction from the frame 310 to the panel 100 is defined as d1, and the width dimension of the edge rib 321 in the direction from the frame 310 to the panel 100 is defined as d2. In order to further improve the effect of the drain groove in discharging condensed water and ensure the structural strength of the edge rib 321, 1≥d1 / d2≥0.5. Drain groove. Furthermore, the width dimension in the direction from the panel 100 to the frame 310 is not less than 5 mm. It can be understood that a larger drain groove depth can accommodate more condensed water and prevent water from being retained at the bottom of the edge rib 321, thereby improving the drainage effect, while not affecting the structural strength of the edge rib 321, thereby further improving the stability and safety of the exhaust outlet 330.

[0078] The projected length of the portion of the edge rib 321 below the air outlet 110 on the horizontal plane is defined as L1, and the projected length of the drain outlet 410 on the horizontal plane is defined as L2; ​​wherein the ratio of L2 to L1 ranges from 1:15 to 1:10. For example, if the edge rib 321 is a circular structure and the radius of the edge rib 321 is 70 cm, the size of the drain groove should range from 4.6 cm to 7 cm. If the horizontal size of the drain groove is less than 4.6 cm, during operation, if foreign matter such as dust or lint is present in the condensed water, the condensed water will easily accumulate at the bottom of the edge rib 321. In addition, if the horizontal size of the drain groove is greater than 7 cm, the opening area of ​​the drain groove is too large, and the air volume will easily diffuse outward from this opening, thereby reducing the wind restriction effect of the edge rib 321 and affecting the stability of the air outlet 330. Therefore, maintaining the ratio of the horizontal size of the drainage groove to the horizontal length of the edge rib 321 at 1:15 to 1:10 can not only effectively drain the condensed water, but also ensure the structural strength and wind restriction effect of the edge rib 321, and maintain the stable operation of the exhaust port 330.

[0079] In other embodiments, the drain port 410 may also be a drain hole formed in the edge rib 321 (not shown). The number of drain holes may be one or more, and this application does not limit this. When there is only one drain hole, it is generally an elongated hole, and its dimension in the direction from the panel 100 to the frame 310 should be no less than 5 mm, but smaller than the dimension of the edge rib 321 in that direction.

[0080] To further enhance condensate drainage, a guide surface 325 is formed at the bottom of the inner circumference of the edge rib 321 of the grille 300, discussed above and below. This guide surface 325 slopes downward in the direction from the frame 310 to the panel 100. A drain outlet 410 is positioned on the guide surface 325. This allows condensate to fall onto the guide surface 325 under the force of gravity, allowing it to flow more quickly toward the drain channel 400. Specifically, after falling onto the guide surface 325, the condensate flows along the slope of the guide surface 325 and is directed into the drain outlet 410, effectively accelerating the condensate drainage process. This prevents condensate from accumulating at the bottom of the edge rib 321. Furthermore, the guide surface 325 helps reduce the accumulation of impurities such as dust and particulate matter in the drain outlet 410. Because the condensate is effectively directed into the drain channel 400 and flows rapidly along the guide surface 325, the accumulation of impurities is reduced, thereby reducing the risk of clogging the drain outlet 410.

[0081] It should be noted that the above-mentioned guide surface 325 can be formed on the edge rib 321 by integral injection molding or 3D printing, or can be formed on the edge rib 321 by cutting or other processes, and this application does not limit this.

[0082] The air outlet grille 320 of the present application may further include connecting ribs. The connecting ribs at least partially cover the air outlet 330. Specifically, the connecting ribs may be provided only within the air outlet 330, with both ends of the connecting ribs fixed to the inner wall of the air outlet 330. The connecting ribs may also be provided entirely within the frame 310, with the portion of the connecting rib located within the air outlet 330 covering the air outlet 330. The connecting ribs may include a plurality of first connecting ribs 322 and a plurality of second connecting ribs 323.

[0083] Referring to Figure 2 , the first connecting ribs 322 extend along or substantially along the first direction X, and the second connecting ribs 323 extend along or substantially along the second direction Y. The first connecting ribs 322 and the second connecting ribs 323 are arranged to form a plurality of grille holes. In one embodiment, the first direction X is perpendicular to the second direction Y, i.e., the angle between the first direction X and the second direction Y is 90 degrees. In another embodiment, the angle between the first direction X and the second direction Y can be an acute angle. For example, the angle between the first direction X and the second direction Y can be, but is not limited to, 60 degrees, 65 degrees, 70 degrees, 75 degrees, 80 degrees, or 85 degrees.

[0084] It should be noted that the first connecting ribs 322 can be straight ribs, curved ribs, or a combination of straight and curved ribs. The second connecting ribs 323 can be straight ribs, curved ribs, or a combination of straight and curved ribs. The shapes of the multiple first connecting ribs 322 or second connecting ribs 323 can be the same or different.

[0085] As shown in Figure 2, the first connecting rib 322 and the second connecting rib 323 are both straight ribs. The two ends of the second connecting rib 323 are respectively connected to two adjacent first connecting ribs 322, and the two second connecting ribs 323 adjacent in the second direction Y are staggered in the first direction X. This arrangement allows the first connecting rib 322 and the second connecting rib 323 to form a roughly rectangular topographic structure within the exhaust vent 330. This improves the structural stability of the air outlet grille 320 while ensuring uniform distribution of airflow through the mesh cover 300, thereby effectively increasing the ventilation volume of the mesh cover 300. In addition, the first connecting rib 322 and the second connecting rib 323 in the embodiment of the present application are integrally formed. This design ensures the connection stability between the first connecting rib 322 and the second connecting rib 323 while reducing the difficulty of processing the first connecting rib 322 and the second connecting rib 323. Of course, in another embodiment, the second connecting rib 323 can be connected to the first connecting rib 322 by bonding.

[0086] The first connecting rib 322 and the frame 310 can be either integral or separate. When the first connecting rib 322 and the frame 310 are integral, the first connecting rib 322 can be formed on the frame 310 using, but not limited to, methods such as injection molding or 3D printing. When the first connecting rib 322 and the frame 310 are separate, the first connecting rib 322 can be fixed to the frame 310 using, but not limited to, methods such as bonding or snap-fitting. It should be noted that the connecting rib can be completely protruding from the outside of the frame 310, or it can be at least partially recessed within the frame 310.

[0087] Further, the first connecting rib 322 can be positioned to at least partially cover the exhaust port 330. That is, the first connecting rib 322 can be positioned only within the exhaust port 330, with both ends of the first connecting rib 322 fixed to the inner wall of the exhaust port 330. Alternatively, the first connecting rib 322 can be positioned entirely within the frame 310, with the portion of the first connecting rib 322 located within the exhaust port 330 protecting the exhaust port 330 and the portion of the first connecting rib 322 located on the frame 310 increasing the area of ​​attachment to the frame 310. This can enhance the stability between the first connecting rib 322 and the frame 310 and improve the strength of the first connecting rib 322 within the exhaust port 330.

[0088] In addition, the above-mentioned drain outlet 410 can also be set on the first connecting rib 322 and the second connecting rib 323 located in the lower middle part of the exhaust outlet 330. A partial guide channel 420 will be formed between the multiple drain outlets 410. The condensed water can flow through different drain outlets 410 and connecting ribs, and finally flow into the partial guide channel 420 on the frame 310, and finally be discharged to the outside.

[0089] The above description is merely an optional embodiment of the present application and does not limit the patent scope of the present application. Any equivalent structural transformation made by using the contents of the present application specification and drawings under the application concept of the present application, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present application.

Claims

1. A panel assembly, wherein: include: A panel, wherein an air outlet is provided on the panel; and A mesh cover, comprising a frame and an air outlet grille; the frame is connected to the panel and is provided with an air outlet corresponding to the air outlet; the air outlet grille is connected to the frame and covers at least a portion of the air outlet; Wherein, a drainage channel is formed on a side of the mesh cover facing the panel, and the drainage channel is used to discharge condensed water falling on the mesh cover and / or the panel to the outside of the frame.

2. The panel assembly according to claim 1, wherein: The drainage channel includes a drain port and a flow guide channel that are connected to each other. At least a portion of the flow guide channel is located on the frame. The drain port is connected to the air outlet.

3. The panel assembly according to claim 1, wherein: The drainage channel includes a drainage port, and the drainage port is connected to the lowest point of the air outlet.

4. The panel assembly according to claim 2 or 3, wherein: The air outlet grille includes edge ribs extending along the periphery of the air outlet, and the edge ribs protrude from the surface of the frame facing the panel; Wherein, the drain outlet is provided on the edge rib.

5. The panel assembly according to claim 4, wherein: The edge ribs are arranged around the air outlet, and the edge ribs surround the outside of the air outlet; Wherein, the portion of the edge rib below the air outlet is provided with the drain outlet.

6. The panel assembly according to claim 5, wherein: The drain port passes through the inner circumferential surface and the outer circumferential surface of the edge rib in the up-down direction.

7. The panel assembly according to claim 6, wherein: The drain outlet passes through the edge rib and faces the end surface of the panel.

8. The panel assembly according to claim 6, wherein: A portion of the inner circumferential surface of the edge rib located at the bottom of the air outlet is formed as a guide surface, and the guide surface is inclined downward in the direction from the frame to the panel; The drain port passes through the guide surface.

9. The panel assembly according to claim 5, wherein: The width of the drain outlet in the direction from the frame to the panel is defined as d1, and the width of the edge rib in the direction from the frame to the panel is defined as d2; Among them, 1≥d1 / d2≥0.

5.

10. The panel assembly according to claim 9, wherein: d1≥5 mm.

11. The panel assembly according to claim 5, wherein: The projected length of the portion of the edge rib below the air outlet on the horizontal plane is defined as L1, and the projected length of the drain outlet on the horizontal plane is defined as L2; Among them, the ratio of L2 to L1 ranges from 1:15 to 1:

10.

12. The panel assembly according to claim 5, wherein: The surface of the panel facing the mesh cover is further recessed to form a groove, and the groove is communicated with the air outlet; The edge ribs are embedded in the groove, and there are gaps between the edge ribs and the bottom wall and side walls of the groove.

13. The panel assembly according to claim 2, wherein: A plurality of reinforcing ribs are provided on the surface of the frame facing the panel; There are at least two reinforcing ribs spaced apart and cooperating with the frame to define the flow guide channel.

14. An outdoor unit, wherein: A panel assembly comprising any one of claims 1 to 13.

15. A heating and ventilation equipment, wherein: The invention comprises the outdoor unit according to claim 14 and an indoor unit forming a refrigerant circulation flow path with the outdoor unit.

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