Coating structure and coating system

Abstract

The application relates to a coating structure and a coating system. The coating structure comprises a conveying member and a containing member. The conveying member is provided with a flow guide cavity, an inlet, an outlet and a steam inlet which are communicated with the flow guide cavity; the containing member is provided with an evaporation cavity which is communicated with the steam inlet; the evaporation cavity is used for containing a liquid to be heated. A colloid is injected into the inlet of the conveying member, and the colloid gradually flows through the flow guide cavity. The evaporation cavity of the containing member is used for containing water, the water is heated by a heat source to form water vapor, the water vapor enters the flow guide cavity from the steam inlet and is mixed with the colloid, the water vapor can improve the temperature and humidity of the colloid, the temperature can promote the crosslinking reaction of molecules in the colloid, and solidification is more easily carried out; the humidity provides reactant water molecules, the water molecules are more quickly diffused to the inside of the colloid, uniform solidification is ensured, surface solidification and insufficient internal solidification are avoided, the crosslinking reaction is significantly accelerated, the solidification speed of the colloid is improved, and the production efficiency of a photovoltaic module is improved.

Description

Technical Field

[0001] This application relates to the field of coating technology, and in particular to a coating structure and coating system. Background Technology

[0002] In the production process of photovoltaic modules, photovoltaic junction boxes need to be installed on the back sheet of the photovoltaic modules and filled with adhesive. However, the curing time of the adhesive is long, usually requiring several hours or even several days, which affects the production efficiency of photovoltaic modules.

[0003] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0004] Therefore, it is necessary to provide a coating structure and coating system to address the problem that the long curing time of colloids affects the production efficiency of photovoltaic modules.

[0005] In a first aspect, a coating structure includes:

[0006] A conveying component, the conveying component being provided with a guide cavity and an inlet, an outlet, and a steam inlet communicating with the guide cavity; and

[0007] A receiving component is provided with an evaporation chamber, which is connected to the steam inlet; the evaporation chamber is used to contain the liquid to be heated.

[0008] In one embodiment, the conveying component includes a main body and a guide section. The main body is provided with the guide cavity, the inlet, the outlet, and the steam inlet. The guide section is connected to the main body and located within the guide cavity. Along the flow direction of the liquid, the guide section is provided with a feed trough communicating with the guide cavity. The steam inlet is located downstream of the feed trough.

[0009] In one embodiment, the wall of the feed trough bends from the outer periphery of the guide portion toward the center of the guide portion, and the wall of the feed trough protrudes in a direction away from the feed inlet.

[0010] In one embodiment, the steam inlet is located at the junction of the main body and the guide section, and the inner surface of the main body and the bottom surface of the guide section together define the flow cross section of the steam inlet.

[0011] In one embodiment, the accommodating member includes an accommodating body and a heating element, the heating element being connected to the accommodating body, and the accommodating body having the evaporation chamber.

[0012] In one embodiment, the receiving member is disposed around the outer periphery of the conveying member.

[0013] In one embodiment, the receiving member includes a connected arc portion and a tapering portion, the tapering portion being in communication with the steam inlet, and the cross-sectional area of ​​the tapering portion gradually narrows from the arc portion toward the steam inlet.

[0014] In one embodiment, the receiving member includes an extension and a receiving portion, the receiving portion having the evaporation chamber, the extension having an extension channel extending in the direction of liquid inflow toward the feed inlet, and the steam inlet communicating with the extension channel.

[0015] In one embodiment, the conveying component includes a feed section, a buffer section, and a discharge section connected together. The feed section, the buffer section, and the discharge section together form the guide cavity. The feed section is provided with the feed inlet, and the discharge section is provided with the discharge outlet. Along the flow direction of the liquid, the buffer section is located between the feed section and the discharge section. The cross-sectional area of ​​the buffer section first decreases and then increases in the direction from the feed section to the discharge section.

[0016] In a second aspect, a coating system comprising the coating structure as described in the first aspect.

[0017] The aforementioned coating structure accelerates the curing of the colloid. The colloid is injected into the feed inlet of the conveying component and gradually flows through the guiding cavity. Water is contained within the evaporation chamber of the housing component. Heated by a heat source, the water forms steam, which enters the guiding cavity through the steam inlet and mixes with the colloid. The steam increases the temperature and humidity of the colloid. The increased temperature promotes the cross-linking reaction of molecules within the colloid, facilitating curing. The increased humidity provides water molecules, allowing them to diffuse more quickly into the colloid, ensuring uniform curing and preventing surface curing while the interior remains under-cured. By providing the necessary water molecules and transferring heat, the coating structure significantly accelerates the cross-linking reaction, increasing the curing speed of the colloid and thus improving the production efficiency of photovoltaic modules. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the disclosed drawings without creative effort.

[0019] Figure 1This is a schematic diagram of the overall structure of a coating structure provided in an embodiment of this application.

[0020] Figure 2 This is a cross-sectional view of a coating structure provided in an embodiment of this application.

[0021] Figure 3 This is a cross-sectional view from another perspective of a coating structure provided in an embodiment of this application.

[0022] Explanation of reference numerals in the attached drawings: 100, coating structure; 1, conveying component; 11, guide cavity; 12, feed inlet; 13, discharge outlet; 14, steam inlet; 15, main body; 151, feed section; 152, buffer section; 153, discharge section; 16, guide section; 161, material trough; 2, accommodating component; 21, evaporation chamber; 22, accommodating main body; 221, extension section; 2211, extension channel; 222, accommodating section; 2221, arc section; 2222, tapering section. Detailed Implementation

[0023] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0024] In the manufacturing process of photovoltaic modules, the curing of colloids (silicone) plays multiple roles, including sealing, bonding, buffering, insulation, and weather resistance, ensuring the stability and photoelectric performance of the photovoltaic modules. Colloids mainly include single-component and two-component colloids. Single-component colloids typically require 4 hours for initial curing and 7-14 days for complete curing; two-component colloids have a shorter curing time, usually a few hours. The relatively long curing time of these colloids affects the processing and production efficiency of photovoltaic modules.

[0025] Firstly, please refer to Figure 1 This application provides a coating structure 100, which can be installed at the discharge end of a coating device. The coating structure 100 is used to coat colloids and can accelerate the curing of colloids.

[0026] In an optional embodiment, the coating structure 100 is entirely made of stainless steel. The smooth surface of stainless steel reduces silicone residue. Furthermore, the stainless steel material facilitates thermal conductivity, promoting the curing of the colloid.

[0027] Please see Figure 2In some embodiments, the coating structure 100 includes a conveying member 1 and a containing member 2. The conveying member 1 is provided with a guiding cavity 11 and an inlet 12, an outlet 13, and a steam inlet 14 communicating with the guiding cavity 11; the containing member 2 is provided with an evaporation cavity 21, which is communicating with the steam inlet 14; the evaporation cavity 21 is used to contain the liquid to be heated. The containing member 2 stores water and heats it to evaporate the water into water vapor, which is then injected into the inlet 12 of the conveying member 1. The colloid flows through the guiding cavity 11 and mixes with the water vapor coming out of the steam inlet 14. The water vapor can increase the humidity and temperature of the colloid. The temperature can promote the cross-linking reaction of molecules in the colloid, making curing easier; the humidity provides water molecules as reactants, allowing water molecules to diffuse into the interior of the colloid more quickly, ensuring uniform curing and avoiding surface curing while the interior is not fully cured. The coating structure 100 provided in this application embodiment significantly accelerates the cross-linking reaction by providing the water molecules required for the reaction and transferring heat, thereby increasing the curing speed of the colloid and improving the production efficiency of photovoltaic modules.

[0028] First, the structure of the conveying component 1 is described. This application does not limit the specific form of the conveying component 1; please refer to [link / reference needed]. Figure 2 The conveying member 1 can be a straight tubular structure extending along its own axis. Alternatively, the conveying member 1 can be a zigzag tubular structure with bending angles. Alternatively, the conveying member 1 can be a spiral tubular structure. Alternatively, the conveying member 1 can also be a tubular structure with branch pipes.

[0029] In optional embodiments, the locations of the feed inlet 12, the discharge outlet 13, and the steam inlet 14 are not limited. For optional embodiments, please refer to... Figure 2 The feed inlet 12 and the discharge outlet 13 are located at the two ports along the axis of the conveying member 1, and the steam inlet 14 is located on the side wall of the conveying member 1. Alternatively, in other optional embodiments, the feed inlet 12, the discharge outlet 13, and the steam inlet 14 may all be located on the side wall of the conveying member 1.

[0030] Please see Figure 3 In some embodiments, the conveying component 1 includes a main body 15 and a flow guide 16. The main body 15 is provided with a flow guide cavity 11, a feed inlet 12, a discharge outlet 13, and a steam inlet 14. The flow guide 16 is connected to the main body 15 and located within the flow guide cavity 11, along the direction of liquid inflow (e.g., ...). Figure 3(As shown in direction A), the guide section 16 is provided with a material passage 161 communicating with the guide cavity 11, and the steam inlet 14 is located downstream of the material passage 161. The guide section 16 is provided in the main body 15, and the material passage 161 is provided on the guide section 16. The material passage 161 can guide the flow of the colloid. After the colloid passes through the material passage 161, it comes into contact with the water vapor coming out of the steam inlet 14. The material passage 161 can increase the contact area between the colloid and the water vapor when the colloid flows in the guide cavity 11, so that the colloid can be dispersed and fully contacted with the water vapor, thereby improving the effect of water vapor on promoting the curing of the colloid.

[0031] Please see Figure 3 In an optional embodiment, the flow guide 16 is connected within the main body 15, dividing the flow guide cavity 11 of the main body 15 into upper and lower cavities along the liquid inflow direction. The two cavities are connected only through the feed trough 161. In other optional embodiments, the flow guide 16 is connected within the main body 15, and the flow guide 15 is connected to a portion of the inner wall of the flow guide cavity 11 through a partial connection, forming a discontinuous cap. An unconnected gap exists between the main body 15 and the inner wall of the flow guide cavity 11, allowing the space outside the coverage area of ​​the main body 15 to remain connected, achieving partial obstruction and partial opening of the flow guide cavity 11. This application does not limit the connection method between the flow guide 16 and the main body 15.

[0032] Please see Figure 3 In optional embodiments, the number of feed troughs 161 can be one or more, such as two, three, four, five, six, seven, eight, etc. The embodiments of this application do not limit the number of feed troughs 161.

[0033] Please see Figure 3 In optional embodiments, the cross-sectional shape of the feed trough 161 along the radial direction of the conveying member 1 can be circular, elongated, triangular, or other shapes. The embodiments of this application do not limit the shape of the feed trough 161.

[0034] In an optional embodiment, a plurality of feed troughs 161 may be arranged in a radial array on the main body 15 along the conveying member 1. Alternatively, please refer to Figure 3 Multiple feed troughs 161 are arranged sequentially around the axis of the conveying component 1, with one end of each feed trough 161 facing the axis of the conveying component 1 and the other end facing the cavity wall of the main body 15. The distribution of the feed troughs 161 is not limited in this embodiment.

[0035] Please see Figure 3In some embodiments, the wall of the feed trough 161 bends from the outer periphery of the guide portion 16 toward the center of the guide portion 16, and the wall of the feed trough 161 protrudes in a direction away from the feed inlet 12. Thus, the feed trough 161 guides the colloid away from the steam inlet 14, preventing the colloid from being introduced into the steam inlet 14. Simultaneously, the bent and protruding feed trough 161 accelerates the flow of the colloid due to the Numberley principle; the area with high colloid flow velocity has low pressure, thereby prompting the water vapor in the evaporation chamber 21 of the containing member 2 to accelerate into the guide chamber 11 and mix with the colloid.

[0036] In an optional embodiment, the walls of the material conveying trough 161 may be partially bent and protruded, or all the walls of the material conveying trough 161 may be bent and protruded.

[0037] In an alternative embodiment, the degree of bending protrusion of the feed trough 161 may be the same or different.

[0038] Please see Figure 3 In some embodiments, the steam inlet 14 is located at the junction of the main body 15 and the guide portion 16, with the inner surface of the main body 15 and the bottom surface of the guide portion 16 jointly defining the flow cross-section of the steam inlet 14. It is understood that the junction of the main body 15 and the guide portion 16 refers to the connection point between the main body 15 and the guide portion 16. Providing the steam inlet 14 on the bottom surface of the guide portion 16 further prevents colloids from entering the steam inlet 14. In other alternative embodiments, the steam inlet 14 may be spaced apart from the bottom surface of the guide portion 16.

[0039] Please see Figure 3 In optional embodiments, there may be one or more steam inlets 14. For example, there may be two, three, four, five, six, seven, eight, or other numbers. The embodiments of this application do not limit the number of steam inlets 14.

[0040] Please see Figure 3 In an optional embodiment, the steam inlets 14 may be randomly located on the main body 15. Alternatively, multiple steam inlets 14 may be arranged sequentially around the axis of the conveying component 1, with each steam inlet 14 corresponding to a feed chute 161 upstream of it. The embodiments of this application do not limit the distribution of the feed chute 161.

[0041] Please see Figure 3In some embodiments, the conveying component 1 includes a feed section 151, a buffer section 152, and a discharge section 153 connected together. The feed section 151, buffer section 152, and discharge section 153 together form a guide cavity 11. The feed section 151 is provided with a feed inlet 12, and the discharge section 153 is provided with a discharge outlet 13. Along the liquid inflow direction, the buffer section 152 is located between the feed section 151 and the discharge section 153. The cross-sectional area of ​​the buffer section 152 first decreases and then increases from the feed section 151 to the discharge section 153. The conveying component 1 is provided with a buffer section 152. The cross-sectional area of ​​the buffer section 152 first decreases to buffer the colloid and make the colloid flow more uniform. Then the cross-sectional area of ​​the buffer section 152 increases to ensure the amount of colloid applied, thereby ensuring the coating cycle.

[0042] In optional embodiments, the receiving member 2 may be connected to at least one of the feeding section 151, the buffer section 152, or the discharging section 153. For example, the receiving member 2 may be disposed on the feeding section 151, or on the buffer section 152, or on the discharging section 153, or the receiving member 2 may be disposed on the feeding section 151, the buffer section 152, and the discharging section 153 simultaneously. The embodiments of this application do not limit the location of the receiving member 2.

[0043] In optional embodiments, the flow guide 16 may be disposed on at least one of the feeding section 151, the buffer section 152, or the discharge section 153. For example, the flow guide 16 may be disposed on the feeding section 151, or on the buffer section 152, or on the discharge section 153, or the flow guide 16 may be disposed on the feeding section 151, the buffer section 152, and the discharge section 153 simultaneously. The embodiments of this application do not limit the location of the flow guide 16.

[0044] Please see Figure 3 In an optional embodiment, the main body 15 includes a feeding section 151, a buffer section 152, and a discharge section 153. A flow guide 16 is disposed within the flow guide cavity 11 of the feeding section 151. A receiving member 2 is connected to the feeding section 151 of the main body 15, and a steam inlet 14 communicates with the feeding section 151.

[0045] Please see Figure 3 In an optional embodiment, the feeding section 151 is a cylindrical structure, and the discharging section 153 is a flat cylindrical structure. The radial direction of the conveying member 1 includes intersecting first directions (such as...). Figure 3 (as shown in the CC direction) and the second direction (as shown in the second direction) Figure 3 As shown in the BB direction, the cross-sectional area of ​​the buffer section 152 along the first direction first decreases and then increases along the axial direction of the conveying member 1, and the cross-sectional area of ​​the buffer section 152 along the second direction gradually decreases along the axial direction of the conveying member 1. Thus, the buffer section 152 can connect the cylindrical feed section 151 and the flat cylindrical discharge section 153.

[0046] The structure of the accommodating component 2 will be described in detail below.

[0047] This application does not limit the connection arrangement of the receiving member 2. In optional embodiments, the receiving member 2 may be disposed beside the conveying member 1. Alternatively, please refer to some embodiments. Figure 3 The accommodating member 2 is arranged around the outer periphery of the conveying member 1, which can increase the capacity of the accommodating member 2 to store more liquid.

[0048] In an optional embodiment, the volume of the accommodating member 2 is 10 cm³. 3 ~15cm 3 For example, the volume of the accommodating member 2 is 10 cm³. 3 11cm 3 12cm 3 13cm 3 14cm 3 15cm 3 wait.

[0049] The embodiments of this application do not limit the shape of the accommodating member 2; the accommodating member 2 can be a cuboid, a torus, an irregular shape, etc. Please refer to... Figure 3 In some embodiments, the accommodating member 2 includes a connected arcuate portion 2221 and a tapering portion 2222. The tapering portion 2222 is connected to the steam inlet 14, and the cross-sectional area of ​​the tapering portion 2222 gradually narrows from the arcuate portion 2221 toward the steam inlet 14. The arcuate portion 2221 is mainly used to accommodate liquid, while the tapering portion 2222 can guide water vapor to flow and accumulate toward the steam inlet 14, improving the water vapor extraction effect.

[0050] Please see Figure 3 In some embodiments, the accommodating member 2 includes an extension 221 and an accommodating portion 222. The accommodating portion 222 is provided with an evaporation chamber 21, and the extension 221 is provided with an extension flow channel 2211. The extension flow channel 2211 extends in the direction of liquid inflow toward the feed inlet 12, and the steam inlet 14 communicates with the extension flow channel 2211. The extension flow channel 2211 can store enough water vapor, thereby ensuring that sufficient water vapor is supplied into the guide flow chamber 11.

[0051] In an optional embodiment, the extension channel 2211 extends downstream of the steam inlet 14 at its top end in the liquid inflow direction. Alternatively, the extension channel 2211 extends upstream of the steam inlet 14 at its top end in the liquid inflow direction. Or, the extension channel 2211 extends flush with the top surface of the steam inlet 14 at its top end in the liquid inflow direction. The embodiments of this application do not limit the extension length of the extension channel 2211.

[0052] Please see Figure 3 In an optional embodiment, the receiving portion 222 includes a connected arc portion 2221 and a tapered portion 2222, with the extension portion 221 communicating with the tapered portion 2222.

[0053] In an optional embodiment, the heat source for heating the liquid can be disposed outside the receiving member 2, and disposed independently of the receiving member 2. Alternatively, the heat source can be integrally disposed on the receiving member 2.

[0054] In some embodiments, the accommodating member 2 includes an accommodating body 22 and a heating element, the heating element being connected to the accommodating body 22, and the accommodating body 22 having an evaporation chamber 21. In optional embodiments, the heating element may be connected to the outer wall surface outside the evaporation chamber 21 of the accommodating body 22, or disposed on the inner wall surface inside the evaporation chamber 21 of the accommodating body 22, or the heating element may be embedded in the cavity wall of the accommodating body 22. The heating element may be a resistance heating element, such as a heating wire or a heating plate.

[0055] Please see Figure 3 In an optional embodiment, the receiving body 22 includes a connected extension 221 and a receiving portion 222. The receiving portion 222 includes a connected arc portion 2221 and a tapered portion 2222. The tapered portion 2222 is connected to the extension 221, and the heating element is connected to the arc portion 2221.

[0056] Secondly, this application also provides a coating system, which includes the coating structure 100 of the first aspect. The coating system also includes a coating device, on which the coating structure 100 is installed at the discharge end of the coating device. In coating scenarios such as filling photovoltaic junction boxes with adhesive, the coating structure 100 can promote the curing of the adhesive, reduce the curing time of the adhesive, and improve the processing and production efficiency of photovoltaic modules.

[0057] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0058] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0059] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0060] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0061] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0062] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0063] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A coating structure (100), characterized in that, include: A conveying component (1) is provided with a guide cavity (11) and an inlet (12), an outlet (13), and a steam inlet (14) communicating with the guide cavity (11); and The accommodating component (2) is provided with an evaporation chamber (21), which is connected to the steam inlet (14); the evaporation chamber (21) is used to accommodate the liquid to be heated.

2. The coating structure (100) according to claim 1, characterized in that, The conveying component (1) includes a main body (15) and a guide section (16). The main body (15) is provided with the guide cavity (11), the feed inlet (12), the discharge outlet (13) and the steam inlet (14). The guide section (16) is connected to the main body (15) and located in the guide cavity (11). Along the flow direction of the liquid, the guide section (16) is provided with a feed trough (161) that communicates with the guide cavity (11). The steam inlet (14) is located downstream of the feed trough (161).

3. The coating structure (100) according to claim 2, characterized in that, The wall of the feed trough (161) bends from the outer periphery of the guide section (16) toward the center of the guide section (16), and the wall of the feed trough (161) protrudes in a direction away from the feed inlet (12).

4. The coating structure (100) according to claim 2, characterized in that, The steam inlet (14) is located at the junction of the main body (15) and the guide section (16), and the inner surface of the main body (15) and the bottom surface of the guide section (16) together define the flow section of the steam inlet (14).

5. The coating structure (100) according to claim 1, characterized in that, The accommodating component (2) includes an accommodating body (22) and a heating element, the heating element being connected to the accommodating body (22), and the accommodating body (22) having the evaporation chamber (21).

6. The coating structure (100) according to claim 1, characterized in that, The receiving member (2) is arranged around the outer periphery of the conveying member (1).

7. The coating structure (100) according to claim 1, characterized in that, The accommodating member (2) includes a connected arc portion (2221) and a tapered portion (2222), the tapered portion (2222) is connected to the steam inlet (14), and the area of ​​the cross section of the tapered portion (2222) gradually narrows from the arc portion (2221) toward the steam inlet (14).

8. The coating structure (100) according to claim 1, characterized in that, The accommodating component (2) includes an extension (221) and an accommodating portion (222). The accommodating portion (222) is provided with the evaporation chamber (21). The extension (221) is provided with an extension channel (2211). The extension channel (2211) extends in the direction of liquid inflow toward the feed inlet (12). The steam inlet (14) is connected to the extension channel (2211).

9. The coating structure (100) according to claim 1, characterized in that, The conveying component (1) includes a feeding section (151), a buffer section (152), and a discharge section (153) connected to each other. The feeding section (151), the buffer section (152), and the discharge section (153) together form the guide cavity (11). The feeding section (151) is provided with the inlet (12), and the discharge section (153) is provided with the outlet (13). Along the flow direction of the liquid, the buffer section (152) is located between the feeding section (151) and the discharge section (153). The cross-sectional area of ​​the buffer section (152) decreases first and then increases from the direction from the feeding section (151) to the discharge section (153).

10. A coating system, characterized in that, The coating system includes the coating structure (100) as described in any one of claims 1 to 9.

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