A coating pre-dryer air knife and coating pre-dryer system

Abstract

A coating pre-drying air knife and a coating pre-drying system are disclosed. The coating pre-drying air knife includes: an air knife body with an air inlet and an air outlet; and multiple sequentially connected and staggered flow channels within the air knife body; the air inlet and the air outlet are connected by the flow channels within the air knife body. The coating pre-drying air knife of this application enables more uniform airflow dispersion within the flow channels.

Description

Technical Field

[0001] This utility model relates to the field of coating technology, and in particular to a coating pre-drying air knife and a coating pre-drying system. Background Technology

[0002] For wet processes in thin film forming, the pre-drying step plays a crucial role in the film's properties. Taking the coating process of perovskite solar cells, which is currently very popular in the market, as an example, the functional layer of perovskite solar cells must be dried under vacuum or air knife conditions to complete the formation of the material's intermediate phase, and then finally formed into a film through heating and drying. For perovskite solar cells, whether rigid or flexible, air knife pre-drying is the preferred method. Existing pre-drying air knives generally have the following technical defects: ① The number of air inlets is small, usually only one, resulting in uneven airflow distribution and thus uneven blowing; ② The flow channel is a single straight channel, and the airflow cannot be evenly dispersed within the channel; ③ The outlet structure is simple, and the instantaneous dissipation of airflow at the outlet affects the blowing effect.

[0003] How to solve the above-mentioned technical problems has become an urgent technical challenge for the industry. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art, the purpose of this utility model is to provide a coating pre-drying air knife and a coating pre-drying system, so that the airflow in the flow channel is more uniformly dispersed.

[0005] To achieve the above objectives, this application provides a coating pre-drying air knife, comprising:

[0006] The air knife body has an air inlet and an air outlet.

[0007] The air blade body also has multiple sequentially connected and staggered flow channels;

[0008] The air inlet and air outlet are connected by a flow channel set inside the air knife body.

[0009] Furthermore, there are multiple air inlets, all of which are connected to the flow channel.

[0010] Furthermore, multiple flow channels are arranged in parallel, and the central axis of the air inlet is perpendicular to the central axis of the flow channel.

[0011] Furthermore, the air outlet includes an internal air outlet and an external air outlet;

[0012] The external air outlet is connected to the airflow channel through the internal air outlet;

[0013] The width of the internal air outlet is smaller than the width of the external air outlet.

[0014] Furthermore, it also includes:

[0015] The air distribution manifold is connected to multiple air inlets.

[0016] Furthermore, the air distribution pipe is connected to the air inlet through the first air inlet pipe;

[0017] The first air intake duct is matched with the air inlet.

[0018] Furthermore, each first intake pipe is equipped with a gas flow valve.

[0019] Furthermore, the wind blade body includes a first body and a second body;

[0020] The inner side of the first body is provided with a first flow channel and a second flow channel;

[0021] The inner side of the second body is provided with a third flow channel and a fourth flow channel;

[0022] The first flow channel connects the air inlet and the third flow channel;

[0023] The second flow channel connects to the third and fourth flow channels;

[0024] The fourth flow channel is connected to the air outlet.

[0025] Furthermore, the air inlet is located on the first body;

[0026] The air outlet is located between the first body and the second body.

[0027] Multiple flow channels are connected in an S-shape.

[0028] To achieve the above objectives, the coating pre-drying system provided in this application includes the aforementioned coating pre-drying air knife;

[0029] Also includes:

[0030] The control module is connected to the gas flow valve;

[0031] The control module is used to control the air intake volume and intake pressure of each air inlet.

[0032] The coating pre-drying air knife and coating pre-drying system provided in this application adopt multiple sequentially connected and staggered flow channels, which makes the airflow more uniformly dispersed in the flow channels; the setting of multiple air inlets further improves the uniformity of the air source in the flow channels; the design of the air distribution outlet and the gas flow valve further improves the uniformity of the air source in the flow channels; the design of the inner air outlet and the outer air outlet makes the instantaneous dissipation of the air more conducive to the blowing after coating.

[0033] Other features and advantages of this application will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing this application. Attached Figure Description

[0034] The accompanying drawings are provided to further illustrate the present application and form part of the specification. Together with the embodiments of the present application, they serve to explain the present application but do not constitute a limitation thereof. In the drawings:

[0035] Figure 1 This is a schematic diagram of the air knife body structure according to an embodiment of this application;

[0036] Figure 2 This is a cross-sectional view of the air knife body according to an embodiment of this application;

[0037] Figure 3 This is an exploded view of the coating pre-drying air knife body according to an embodiment of this application;

[0038] Figure 4 This is a coating pre-drying air knife according to an embodiment of this application.

[0039] Reference numerals: 101-First body; 102-Second body; 103-Air inlet; 104-First flow channel; 105-Second flow channel; 106-Third flow channel; 107-Fourth flow channel; 108-Inner air outlet; 109-Outer air outlet; 110-Gas flow valve; 111-Gas distributor; 112-Air inlet pipe. Detailed Implementation

[0040] The preferred embodiments of this application are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit this application.

[0041] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While some embodiments of this application are shown in the drawings, it should be understood that this application can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of this application. It should be understood that the drawings and embodiments of this application are for illustrative purposes only and are not intended to limit the scope of protection of this application.

[0042] The term "comprising" and its variations as used herein are open-ended inclusions, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Definitions of other terms will be given in the description below.

[0043] It should be noted that the terms "first" and "second" may be used in this application only to distinguish different devices, components or parts, and are not used to define the order of functions performed by these devices, components or parts or their interdependence.

[0044] It should be noted that the terms "one" and "more" used in this application are illustrative rather than restrictive, and those skilled in the art should understand that, unless explicitly stated otherwise in the context, they should be understood as "one or more". "More" should be understood as two or more.

[0045] The coating pre-drying air knife of this application includes:

[0046] The air knife body is provided with an air inlet 103 and an air outlet;

[0047] The air blade body also has multiple sequentially connected and staggered flow channels;

[0048] The air inlet 103 and the air outlet are connected by a flow channel set inside the air knife body.

[0049] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0050] Example 1

[0051] Figure 1 This is a schematic diagram of the air knife body structure according to an embodiment of this application. Figure 2 This is a cross-sectional view of the air knife body according to an embodiment of this application. Figure 3 This is an exploded view of the coating pre-drying air knife body according to an embodiment of this application. Figure 4 For example, a pre-drying air knife for coating according to an embodiment of this application, such as Figure 1-4 As shown in the figure, the coating pre-drying air knife of this application embodiment includes: an air knife body.

[0052] In this embodiment, a pre-drying air knife is used for phase formation and film formation after the coating process of perovskite solar cells.

[0053] In one exemplary embodiment, the air knife body includes a first body 101 and a second body 102, the first body 101 and the second body 102 being disposed facing each other, as shown below. Figure 1 and Figure 2 As shown.

[0054] In one exemplary embodiment, the air knife body is provided with an air inlet 103 and an air outlet.

[0055] In one exemplary embodiment, the air inlet 103 is provided at the upper end of the air knife body as needed, and the air outlet is provided at the lower end of the air knife body.

[0056] In one exemplary embodiment, as needed, the air inlet 103 is disposed at the upper end of the first body 101, and the air outlet is sandwiched at the lower end between the first body 101 and the second body 102, such as... Figure 2 As shown.

[0057] In one exemplary embodiment, the air knife body has multiple sequentially connected and staggered flow channels inside, such as... Figure 2 As shown, multiple flow channels are arranged alternately from top to bottom inside the air knife body.

[0058] In one exemplary embodiment, the multiple flow channels are connected and then continuously bent, for example, in an S-shape.

[0059] In one exemplary embodiment, the air inlet 103 and the air outlet are connected by a flow channel provided in the air knife body; that is, the air coming in through the air inlet 103 passes through multiple flow channels arranged in sequence and in an alternating manner and is then blown out from the air outlet.

[0060] In an exemplary embodiment, the inner side of the first body 101 is provided with a first flow channel 104 and a second flow channel 105, which are not directly connected; the inner side of the second body 102 is provided with a third flow channel 106 and a fourth flow channel 107, which are not directly connected.

[0061] In one exemplary embodiment, each channel is grooved.

[0062] In one exemplary embodiment, multiple flow channels are arranged in parallel.

[0063] In an exemplary embodiment, the first flow channel 104 connects the air inlet 103 and the third flow channel 106, the second flow channel 105 connects the third flow channel 106 and the fourth flow channel 107, and the fourth flow channel 107 is connected to the air outlet. It can be understood that the air coming in through the air inlet 103 passes through the first flow channel 104, the third flow channel 106, the second flow channel 105, and the fourth flow channel 107 in sequence, and then is blown out from the air outlet. The air coming in through the air inlet 103 passes through multiple flow channels, which makes the airflow more dispersed, thereby ensuring the uniformity and stability of the air pressure in the flow channels.

[0064] In an exemplary embodiment, since the multiple flow channels are arranged in parallel and the first flow channel 104, the third flow channel 106, the second flow channel 105 and the fourth flow channel 107 are sequentially connected, the flow channels on the first body 101 and the flow channels on the second body 102 are asymmetrically arranged. It can be understood that the flow channel connection is achieved through staggered connection between the flow channels.

[0065] In one exemplary embodiment, the air inlet 103 includes a plurality of inlets, each of which is connected to a flow channel. For example, a plurality of air inlets 103 are evenly provided on the first body 101, and each air inlet 103 is connected to a first flow channel 104. Figure 1 and Figure 3 As shown.

[0066] In one exemplary embodiment, the air inlet 103 may include seven inlets, as needed. Figure 1 and Figure 3 As shown.

[0067] In one exemplary embodiment, the central axes of a plurality of air inlets 103 are arranged in parallel.

[0068] In one exemplary embodiment, the central axis of the air inlet 103 is perpendicular to the central axis of the flow channel.

[0069] In one exemplary embodiment, the coating pre-drying air knife of this application embodiment further includes: an air distribution outlet 111.

[0070] In one exemplary embodiment, the air distribution 111 is connected to a plurality of air inlets 103.

[0071] In one exemplary embodiment, the outlet of the air distribution 111 is matched with the air inlet 103, which can be understood as the number and size of the outlets of the air distribution 111 matching the number and size of the air inlets 103.

[0072] In one exemplary embodiment, the air distribution manifold 111 is connected to the air inlet 103 via a first air inlet pipe, and each air inlet 103 is matched with a first air inlet pipe, such as... Figure 3 As shown.

[0073] In one exemplary embodiment, each first air intake pipe is provided with a gas flow valve 110.

[0074] In one exemplary embodiment, the outlet of the air distribution 111 corresponds one-to-one with the air inlet 103 of the air knife body.

[0075] In one exemplary embodiment, the gas distributor 111 further includes an inlet connected to an external gas source device via an air intake pipe 112.

[0076] In one exemplary embodiment, the first air intake duct corresponds one-to-one with the air inlet 103 and is matched.

[0077] In one exemplary embodiment, a gas flow valve 110 is provided on each first air intake pipe, which further improves the controllability of air intake through multiple air inlets 103 and enhances the uniformity of air intake.

[0078] In one exemplary embodiment, the air outlet includes an internal air outlet 108 and an external air outlet 109, such as Figure 2 As shown.

[0079] In one exemplary embodiment, the outgoing air vent 109 is connected to the flow channel via the internal air vent 108, that is, the internal air vent 108 connects the fourth flow channel 107 and the outgoing air vent 109.

[0080] In one exemplary embodiment, the width of the inner air outlet 108 is smaller than the width of the outer air outlet 109. This can be understood as the gap between the first body 101 and the second body 102 at the inner air outlet 108 being smaller than the gap at the outer air outlet 109. Figure 2 As shown.

[0081] In one exemplary embodiment, the design of the inner air outlet 108 having a smaller width than the outer air outlet 109 provides a buffer and windbreak effect for the air outlet at the moment of air discharge, making the dissipation of air at the moment of air discharge from the outer air outlet 109 more conducive to the blowing after coating.

[0082] Example 2

[0083] Example 2 is a coating pre-drying system, including the coating pre-drying air knife of the above examples.

[0084] In one exemplary embodiment, the coating pre-drying system of this application further includes a control module.

[0085] In one exemplary embodiment, the control module is connected to the gas flow valve 110 of the above embodiment. When there are multiple gas flow valves 110, the control module is connected to each gas flow valve 110.

[0086] In one exemplary embodiment, the control module is used to control the air intake volume and air intake pressure of each air inlet 103 by controlling the gas flow valve 110; it can be understood that the control module achieves uniform and controllable air intake of each air inlet 103 by adjusting the gas flow valve 110.

[0087] In one exemplary embodiment, the control module is also connected to the gas source device as needed to control the operating status of the gas source device.

[0088] It will be understood by those skilled in the art that the above are merely preferred embodiments of this application and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A coating pre-drying air knife, characterized in that, include: The air knife body is provided with an air inlet and an air outlet. The air knife body is also provided with multiple sequentially connected and staggered flow channels; The air inlet and the air outlet are connected by a flow channel disposed within the air knife body.

2. The coating pre-drying air knife according to claim 1, characterized in that, The air inlets include multiple inlets, and each of the multiple air inlets is connected to the flow channel.

3. The coating pre-drying air knife according to claim 2, characterized in that, The multiple flow channels are arranged in parallel, and the central axis of the air inlet is perpendicular to the central axis of the flow channel.

4. The coating pre-drying air knife according to claim 1, characterized in that, The air outlet includes an internal air outlet and an external air outlet; The external air outlet is connected to the flow channel through the internal air outlet; The width of the inner air outlet is smaller than the width of the outer air outlet.

5. The coating pre-drying air knife according to claim 2, characterized in that, It also includes: The air distribution manifold is connected to multiple air inlets.

6. The coating pre-drying air knife according to claim 5, characterized in that, The air distribution pipe is connected to the air inlet through the first air inlet pipe; The first air intake pipe is matched with the air inlet.

7. The coating pre-drying air knife according to claim 6, characterized in that, Each of the first intake pipes is equipped with a gas flow valve.

8. The coating pre-drying air knife according to claim 1, characterized in that, The air knife body includes a first body and a second body; The inner side of the first body is provided with a first flow channel and a second flow channel; The inner side of the second body is provided with a third flow channel and a fourth flow channel; The first flow channel connects the air inlet and the third flow channel; The second flow channel connects the third flow channel and the fourth flow channel; The fourth flow channel is connected to the air outlet.

9. The coating pre-drying air knife according to claim 8, characterized in that, The air inlet is located on the first body; The air outlet is located between the first body and the second body; The multiple flow channels are connected in an S-shape.

10. A coating pre-drying system, characterized in that, Includes the coating pre-drying air knife as described in any one of claims 1-9; It also includes: Control module, which is connected to the gas flow valve; The control module is used to control the air intake volume and air intake pressure of each air inlet.

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