A drying apparatus

Abstract

The utility model discloses a kind of drying device, it includes box and gas storage tank, gas diffusion plate and heating element from top to bottom being arranged in the inside of the box, the top of the box is provided with several air inlet holes, bottom is provided with several air outlet holes, the bottom of the gas storage tank is provided with several first diffusion holes, the gas diffusion plate is provided with several second diffusion holes, gas is entered into the gas storage tank from the air inlet hole and sequentially diffused to the heating element on the first diffusion hole, second diffusion hole heating, heated gas is blown out through the air outlet hole. The utility model improves the uniformity of gas distribution, so that gas heating is more sufficient, uniform, can guarantee the uniformity of product drying, can avoid the phenomenon of local overheating, so as to guarantee the drying quality of product.

Description

Technical Field

[0001] This utility model belongs to the field of solar cell manufacturing technology, and in particular relates to a drying device. Background Technology

[0002] In solar cell production, before processes such as stacking and stringing, large-sized cells often need to be divided into smaller cells. Currently, laser scribing is commonly used. A grooving laser first creates grooves on the surface of the cell, then a heating laser heats the cell along the grooves. Finally, a cooling system sprays coolant along the grooves, causing the cell to cool and split along the grooves, resulting in two separate cells. Since coolant remains on the diced cells, they need to be dried before being transported to subsequent processing stations.

[0003] In the prior art, there are drying devices designed to dry battery cells. For example, a drying device disclosed in Chinese Patent Publication No. CN219347201U includes a drying component, which includes a heating chamber, an air inlet, and a heating element. The heating chamber is provided with an airflow channel, and the bottom of the heating chamber is provided with multiple air outlets communicating with the airflow channel. The air inlet is connected to the airflow channel, and the heating element is located in the heating chamber to heat the gas in the airflow channel. The heated gas is finally blown downwards through the air outlets to dry the battery cells. In this scheme, the gas is introduced into the airflow channel, and the heating element is located outside the airflow channel. The heating element first heats the airflow channel and then heats the gas in the airflow channel. Not only is the heating efficiency low, but the airflow channel is also prone to fatigue damage after long-term heating. However, the airflow channel is tortuous and winding, and if the airflow channel is damaged, it is not easy to replace or repair it.

[0004] A solar cell drying device disclosed in Chinese Patent Publication No. CN214469923U includes a drying mechanism comprising a drying chamber, a negative pressure fan, a first heating wire, and a second heating wire. When the solar cells enter the drying chamber, the first and second heating wires heat the interior of the drying chamber. Then, the negative pressure fan is activated to blow hot air from the upper part of the drying chamber through vents to the lower part of the drying chamber to dry the solar cells. Although this solution uses the first and second heating wires to directly heat the gas, the gas drawn into the drying chamber by the negative pressure fan cannot be evenly distributed. The gas density in the drying chamber will be high in some areas and low in others, resulting in uneven heating. Therefore, the gas blown onto the surface of the solar cells will have high heat in some areas and low heat in others, leading to uneven drying of the solar cells.

[0005] Therefore, it is necessary to provide a drying device to solve the above-mentioned technical problems. Utility Model Content

[0006] The main purpose of this invention is to provide a drying device that improves the uniformity of gas distribution, thereby making the gas heating more thorough and uniform, ensuring the uniformity of product drying, avoiding local overheating, and thus ensuring the drying quality of the product.

[0007] This utility model achieves the above-mentioned objective through the following technical solution: a drying device, comprising a box body and a gas storage box, a gas diffusion plate, and a heating element arranged from top to bottom inside the box body. The top of the box body is provided with a plurality of air inlets and the bottom is provided with a plurality of air outlets. The bottom of the gas storage box is provided with a plurality of first diffusion holes, and the gas diffusion plate is provided with a plurality of second diffusion holes. Gas enters the gas storage box through the air inlets and diffuses sequentially through the first diffusion holes and the second diffusion holes to the heating element for heating. The heated gas is blown out through the air outlets.

[0008] Furthermore, the gas storage box has an opening at its upper end that communicates with the air inlet, and the upper end of the gas storage box is in contact with and sealed to the top wall of the box body.

[0009] Furthermore, the upper end of the gas storage box is provided with several openings that communicate with the air inlet, and the upper end of the gas storage box is in contact with and sealed to the top wall of the box body.

[0010] Furthermore, both ends of the gas storage box are provided with mounting ears, and a first fastener is tightened on the mounting ears. Both the mounting ears and the box body are provided with a first mounting hole that cooperates with the first fastener.

[0011] Furthermore, the heating element includes an element body and a plurality of heating plates sleeved on the periphery of the element body.

[0012] Furthermore, several heating elements are arranged along the length of the element body and are evenly spaced to cover the outer periphery of the element body.

[0013] Furthermore, mounting brackets for installing the gas diffuser plate and the heating element are provided at both ends of the housing.

[0014] Furthermore, the mounting bracket includes a support block for supporting the gas diffuser plate and a mounting block with one end positioned above the support block and the other end extending downward for mounting the heating element. The front and rear ends of the support block are fixed to the front and rear inner walls of the housing, and the upper end of the mounting block is fixed to the support block.

[0015] Furthermore, the gas diffuser plate and the heating element are installed on the left and right inner walls of the housing.

[0016] Furthermore, a temperature sensor is installed inside the housing below the heating element.

[0017] Compared with the prior art, the advantages of the drying device of this utility model are as follows:

[0018] (1) A gas storage box and a gas diffusion plate are provided inside the box. The bottom of the gas storage box is covered with first diffusion holes, and the gas diffusion plate is covered with second diffusion holes. Therefore, there are two layers of diffusion holes. The gas enters the gas storage box through the air inlet and diffuses to the heating element in sequence through the two layers of diffusion holes for heating. This allows the gas to diffuse fully and evenly to the entire outer periphery of the heating element, improving the uniformity of gas distribution and making the gas heating more thorough and uniform.

[0019] (2) The heating element has several heating plates distributed along the length of the outer periphery of the element body. On the one hand, it can increase the heating area of ​​the gas, making the gas heating more thorough and uniform. On the other hand, the heating plates can play a role in diverting the flow. A gas diffusion channel is formed between every two heating plates. The heating plates form a multi-channel gas diffusion path. The gas diffused from the gas diffusion plate is diverted by the heating plates and diffuses downward from the multi-channel path, which can ensure the uniformity of product drying and avoid local overheating, thereby ensuring the drying quality of the product. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the drying device structure according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the drying device according to an embodiment of the present invention after removing one side wall of the chamber;

[0022] Figure 3 This is a schematic diagram of the gas storage box structure according to an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the gas diffuser plate, heating element, and mounting frame structure according to an embodiment of the present invention;

[0024] The numbers in the image represent:

[0025] 100-Drying device;

[0026] 1-Box body, 11-Air inlet, 12-Air outlet;

[0027] 2-Gas storage box, 21-First diffuser hole, 22-Mounting lug;

[0028] 3-Gas diffuser plate, 31-Second diffuser hole;

[0029] 4-Heating element, 41-Element body, 42-Heating plate;

[0030] 5-Temperature sensor;

[0031] 6-Mounting bracket, 61-Bearing block, 62-Mounting block, 63-Second mounting hole;

[0032] 7-Support plate. Detailed Implementation

[0033] Please refer to Figures 1-4 This embodiment is a drying device 100, which includes a housing 1 and, from top to bottom, a gas storage tank 2, a gas diffuser plate 3, and a heating element 4 arranged inside the housing 1. The top of the housing 1 has several air inlets 11, and the bottom has several air outlets 12. The bottom of the gas storage tank 2 has several first diffuser holes 21, and the gas diffuser plate 3 has several second diffuser holes 31. Gas enters the gas storage tank 2 through the air inlets 11 and diffuses sequentially through the first diffuser holes 21 and the second diffuser holes 31 to the heating element 4 for heating. The heated gas is then blown out through the air outlets 12. The bottom of the gas storage tank 2 is covered with first diffuser holes 21, and the gas diffuser plate 3 is covered with second diffuser holes 31. The gas diffuser plate 3 is placed horizontally, and the two layers of diffuser holes allow the gas to diffuse fully and evenly to the entire outer periphery of the heating element 4, improving the uniformity of gas distribution and thus making the gas heating more thorough and uniform.

[0034] A support plate 7 is provided on the top of the box 1 to facilitate the installation and fixation of the box 1.

[0035] In this embodiment, four air inlets 11 are provided, and gas is simultaneously filled into all four air inlets 11. In other embodiments, the number of air inlets 11 may be increased or decreased according to actual conditions, and the number of air inlets 11 is not limited here.

[0036] There are a large number of air vents 12, and the vent diameter is small, in order to ensure the uniformity of cell drying.

[0037] In this embodiment, the gas storage tank 2 is fully open at the top, and the top of the gas storage tank 2 is in contact with and sealed to the top wall of the housing 1. The fully open top of the gas storage tank 2 is connected to the air inlet 11, so that the gas in the air inlet 11 can quickly diffuse into the gas storage tank 2, allowing the gas storage tank 2 to quickly fill with gas. The top of the gas storage tank 2 is in contact with and sealed to the inner wall of the housing 1, so the gas will not diffuse from the top of the gas storage tank 2. Therefore, the gas will not diffuse to other locations, but can only diffuse downward through the first diffusion hole 21, which can ensure that all the gas diffuses downward to the heating element 4 for heating.

[0038] In other embodiments, the upper part of the gas storage box 2 is provided with an opening, that is, an opening is provided below several air inlets 11 and communicates with the air inlets 11, and the upper part of the gas storage box 2 is still in contact and sealed with the inner wall of the box body 1.

[0039] In another embodiment, the upper end of the gas storage box 2 is provided with several openings communicating with the air inlet 11, and the upper end of the gas storage box 2 is still in contact and sealed with the inner wall of the box body 1.

[0040] Both ends of the gas storage box 2 are provided with mounting ears 22, and a first fastener is tightened on the mounting ears 22 to facilitate the installation of the gas storage box 2 on the top wall of the box body 1. The mounting ears 22 and the box body 1 are both provided with a first mounting hole that mates with the first fastener.

[0041] The first fastener may be selected from one of the bolts, screws, and pins, or other fasteners of different structures, without limitation.

[0042] The heating element 4 includes an element body 41 and a plurality of heating plates 42 sleeved around the outer periphery of the element body 41. The plurality of heating plates 42 are arranged along the length of the element body 41 and are evenly spaced around the outer periphery of the element body 41. The plurality of heating plates 42 can, on the one hand, increase the heating area of ​​the gas, making the gas heating more thorough and uniform; on the other hand, the plurality of heating plates 42 can play a role in diverting the gas, forming a gas diffusion channel between every two heating plates 42. The plurality of heating plates 42 form a multi-channel gas diffusion path. The gas diffused from the gas diffusion plate 3 is diverted by the heating plates 42 and diffuses downward through the multi-channel path, which can ensure the uniformity of drying and avoid local overheating.

[0043] In this embodiment, three heating elements 4 are arranged in a front-to-back arrangement. In other embodiments, the number of heating elements 4 can be set according to the actual situation, and the number of heating elements 4 is not limited here.

[0044] In this embodiment, mounting brackets 6 for mounting gas diffuser plates 3 and heating elements 4 are provided at both ends of the housing 1. The mounting bracket 6 includes a support block 61 supporting the gas diffuser plate 3 and a mounting block 62 with one end positioned above the support block 61 and the other end used to mount the heating element 4. The front and rear ends of the support block 61 are fixed to the front and rear inner walls of the housing 1. The upper end of the mounting block 62 is fixed to the support block 61, and the lower end extends vertically to mount the heating element 4. The left and right ends of the gas diffuser plate 3 are confined between the left and right mounting blocks 62, and the front and rear sides are confined to the front and rear inner walls of the housing 1, thus preventing movement of the gas diffuser plate 3. A second mounting hole 63 for mounting the heating element 4 is provided at the lower end of the mounting block 62.

[0045] In this embodiment, since there are several heating elements 4, there are corresponding mounting blocks 62. Alternatively, the several mounting blocks 62 can be set as a whole, and then several second mounting holes 63 can be set.

[0046] In other embodiments, the gas diffuser plate 3 and the heating element 4 are installed on the left and right inner walls of the housing 1.

[0047] A temperature sensor 5 is installed below the heating element 4 inside the housing 1. The temperature sensor 5 is used to monitor the temperature inside the housing 1 to ensure that the temperature of the gas blown out of the vent 12 is within a predetermined temperature range. Specifically, when the temperature of the gas inside the housing 1 is too low, the heating power of the heating element 4 can be increased to raise the temperature of the gas inside the housing 1; conversely, when the temperature of the gas inside the housing 1 is too high, the heating power of the heating element 4 can be decreased to lower the temperature of the gas inside the housing 1.

[0048] When applying the drying device 100 provided in this solution, the drying device 100 is set above the battery cell conveying line. Gas is introduced into the air inlet 11 of the housing 1. The gas enters the gas storage tank 2 from the air inlet 11 and fills the entire gas storage tank 2. Then, it diffuses through the first diffusion hole 21 and the second diffusion hole 31 to the heating element 4 for heating. The element body 41 and several heating plates 42 of the heating element 4 fully heat the gas. The heated gas is blown out through the air outlet 12 to dry the product. The temperature sensor 5 detects the gas temperature in the housing 1 and maintains the temperature stability by adjusting the power of the heating element 4. Finally, the heated gas is blown out through the air outlet 12 to dry the product.

[0049] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A drying apparatus, characterized in that: It includes a housing and, from top to bottom, a gas storage tank, a gas diffusion plate, and a heating element disposed inside the housing. The top of the housing is provided with several air inlets and the bottom is provided with several air outlets. The bottom of the gas storage tank is provided with several first diffusion holes, and the gas diffusion plate is provided with several second diffusion holes. Gas enters the gas storage tank through the air inlets and diffuses sequentially through the first diffusion holes and the second diffusion holes to the heating element for heating. The heated gas is blown out through the air outlets.

2. The drying apparatus as described in claim 1, characterized in that: The gas storage box has an opening at its upper end that communicates with the air inlet, and the upper end of the gas storage box is in contact with and sealed to the top wall of the box body.

3. The drying apparatus as described in claim 1, characterized in that: The upper end of the gas storage box is provided with several openings that communicate with the air inlet, and the upper end of the gas storage box is in contact with and sealed to the top wall of the box body.

4. The drying apparatus as described in claim 1, characterized in that: Both ends of the gas storage box are provided with mounting ears, and a first fastener is tightened on the mounting ears. Both the mounting ears and the box body are provided with a first mounting hole that mates with the first fastener.

5. The drying apparatus as described in claim 1, characterized in that: The heating element includes an element body and a plurality of heating plates sleeved around the outer periphery of the element body.

6. The drying apparatus as described in claim 5, characterized in that: Several heating elements are arranged along the length of the element body and are evenly spaced to cover the outer periphery of the element body.

7. The drying apparatus as described in claim 1, characterized in that: The left and right ends of the housing are provided with mounting brackets for installing the gas diffuser plate and the heating element.

8. The drying apparatus as described in claim 7, characterized in that: The mounting bracket includes a support block for supporting the gas diffuser plate and a mounting block with one end positioned above the support block and the other end extending downward for mounting the heating element. The front and rear ends of the support block are fixed to the front and rear inner walls of the housing, and the upper end of the mounting block is fixed to the support block.

9. A drying apparatus as described in claim 1, characterized in that: The gas diffuser plate and the heating element are installed on the left and right inner walls of the housing.

10. A drying apparatus as described in claim 1, characterized in that: A temperature sensor is installed inside the box below the heating element.

Images