Curved sealing structure applied to chain rod type solar cell sintering furnace

Abstract

The utility model relates to the technical field of sintering furnaces, in particular to a curved sealing structure applied to a chain rod type solar cell sintering furnace, which is arranged in a sintering furnace provided with a carrying frame, an upper furnace wall and a lower furnace wall, the carrying frame moves in a walking cavity formed between the upper furnace wall and the lower furnace wall, and the curved sealing structure comprises a curved sealing plate arranged on the carrying frame, and the curved sealing part is arranged on the upper furnace wall and / or the lower furnace wall, the curved sealing plate and the curved sealing part are matched to form a barrier to shield a cavity port of the walking cavity, and convection of gas inside and outside the sintering furnace through the walking cavity is blocked. The curved sealing plate is matched with the curved sealing part arranged on the upper furnace wall and / or the lower furnace wall, the walking cavity is partitioned, convection of gas inside and outside the furnace body is prevented, heat loss in the working cavity is avoided, and high efficiency and energy conservation are achieved; due to the fact that convection of gas inside and outside the furnace body is blocked, the atmosphere in the working cavity is more stable, and the effects of reducing furnace temperature fluctuation and reducing temperature difference in the furnace are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of sintering furnaces, in particular to a curved sealing structure applied to a chain rod type solar cell sintering furnace. Background Art

[0002] The main function of the sintering furnace is to form an ohmic contact between the screen-printed electrodes and the silicon wafer under high temperature to improve the conversion efficiency of the battery. Therefore, the battery needs to be placed in the sintering furnace and transported into and out of the sintering furnace.

[0003] In the actual sintering process, the heat transfer methods in the sintering furnace mainly include heat radiation, heat convection and heat conduction. The heat transfer in the working chamber of the sintering furnace is mainly based on heat radiation, thereby completing the sintering of the battery cell; however, based on the transmission characteristics of the chain rod sintering furnace, the side furnace wall of the sintering furnace is divided into an upper furnace wall and a lower furnace wall, and a walking cavity for the carrier to run is formed between the upper furnace wall and the lower furnace wall, so that the working chamber in the sintering furnace is connected to the outside of the sintering furnace, resulting in the heat in the working chamber of the sintering furnace being dissipated outward through the walking cavity, increasing the energy consumption of the equipment and causing energy waste. In addition, due to the convection of gases inside and outside the furnace body, the temperature in the working chamber will also fluctuate, resulting in a large temperature difference, affecting the uniformity of sintering.

[0004] Based on the problems in the prior art, the utility model provides a curved sealing structure applied to a chain-rod type solar cell sintering furnace. Utility Model Content

[0005] The utility model aims to provide a curved sealing structure applied to a chain-rod type solar cell sintering furnace to solve the technical problem in the prior art that heat in a working chamber of the chain-rod type sintering furnace is convectively lost outward through a walking chamber formed between upper and lower furnace walls.

[0006] The technical solution of the utility model is:

[0007] A curved sealing structure applied to a chain-rod type solar cell sintering furnace is arranged in a sintering furnace having a carrying frame and upper and lower furnace walls. The carrying frame is connected to a transmission component and moves along with the transmission component in a running cavity formed between the upper and lower furnace walls. The structure comprises a curved sealing plate arranged on the carrying frame, and a curved sealing part arranged on the upper and / or lower furnace walls. The curved sealing plate cooperates with the curved sealing part to form a barrier to cover the cavity port of the running cavity, thereby preventing convection of gases inside and outside the sintering furnace through the running cavity.

[0008] Preferably, the curved sealing plate has a fixed end fixedly connected to the mounting frame, and an extension end extending toward the top and / or bottom of the mounting frame, and the extension end shields the cavity port of the walking cavity.

[0009] Preferably, the height of the curved sealing plate along a direction perpendicular to the length of the mounting frame is not less than the height of the walking cavity.

[0010] Preferably, the curved sealing portion is formed by a concave cavity structure formed on the upper and / or lower furnace wall, the extended end of the curved sealing plate extends into the concave cavity, and the extended end combination arranged on the mounting frame blocks the inner and outer spaces of the walking cavity.

[0011] Preferably, the cavity is directly formed by the inner wall surface of the upper and / or lower furnace wall being concave.

[0012] Preferably, the cavity is directly formed by the concave bottom wall surface of the upper furnace wall, and / or is formed by the concave top wall surface of the lower furnace wall.

[0013] Preferably, the curved sealing portion is formed by the inner wall surface structure of the upper and / or lower furnace wall, the curved sealing plate is arranged close to the inner wall surface of the upper furnace wall and / or lower furnace wall, and the curved sealing plate combination arranged at the port of the walking cavity blocks the cavity port of the walking cavity.

[0014] Preferably, the curved sealing portion formed on the top surface of the lower furnace wall is filled with sand or flexible material;

[0015] The curved sealing portion formed on the bottom wall surface of the upper furnace wall is filled with flexible material.

[0016] Compared with the prior art, the advantages of the present invention are:

[0017] Due to the existence of the walking cavity, there is bound to be the possibility of gas convection inside and outside the furnace body. The utility model arranges a curved sealing plate on the carrying frame circulating in the walking cavity. The curved sealing plate and the curved sealing parts arranged on the upper and lower furnace walls cooperate with each other to isolate the walking cavity, prevent gas convection inside and outside the furnace body, and thus avoid heat loss in the working cavity, thereby achieving high efficiency and energy saving. In addition, since the curved sealing plate and the curved sealing part cooperate with each other, the convection of gas inside and outside the furnace body is blocked, the atmosphere in the working cavity is more stable, and it also has the effect of reducing furnace temperature fluctuations and reducing temperature differences in the furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0019] Figure 1 It is the front view of the upper and lower furnace bodies of the utility model;

[0020] Figure 2 As shown in the utility model Figure 1 A schematic diagram of the curved sealing plate corresponding to position a in the first embodiment;

[0021] Figure 3 This is a schematic diagram of the curved sealing plate of the utility model in a second embodiment;

[0022] Figure 4 This is a schematic diagram of the curved sealing plate of the utility model in a third embodiment;

[0023] Figure 5 It is a schematic diagram of the curved sealing plates on the carrying frame of the utility model forming a barrier;

[0024] Figure 6 As shown in the utility model Figure 5 A partial enlarged schematic diagram of point b in the middle;

[0025] Among them: 1. curved sealing plate; 2. curved sealing part; 3. carrying frame; 4. upper furnace wall; 5. lower furnace wall; 6. walking cavity; 11. fixed end; 12. extension end. DETAILED DESCRIPTION

[0026] The following is a further detailed description of the present invention in conjunction with specific embodiments:

[0027] like Figure 1 As shown, a curved sealing structure applied to a chain-rod type solar cell sintering furnace is arranged in a sintering furnace having a carrying frame 3 and upper and lower furnace walls. The carrying frame 3 is connected to a transmission component and moves with the transmission component in a walking cavity 6 formed between the upper and lower furnace walls.

[0028] Specifically, refer to the attached Figure 6 The curved sealing structure includes a curved sealing plate 1 and a curved sealing portion 2 arranged on the upper furnace wall 4 and / or the lower furnace wall 5. The curved sealing plate 1 is fixed on the mounting frame 3 to block gas convection, reduce heat loss, and reduce furnace temperature fluctuations.

[0029] The curved sealing plate 1 has a fixed end 11 fixedly connected to the mounting frame 3, and an extended end 12 extending toward the top and / or bottom of the mounting frame 3. The distance between the ends of the extended ends 12 at the upper and lower ends is not less than the height of the walking cavity 6, thereby shielding the cavity port of the walking cavity 6.

[0030] a. In one embodiment, Figure 2 As shown in the figure, the curved sealing part 2 is formed by the inner wall surface structure of the upper and / or lower furnace wall, the curved sealing plate 1 is arranged close to the inner wall surface of the upper furnace wall and / or the lower furnace wall, and the curved sealing plate 1 arranged at the port of the running cavity 6 is combined to block the cavity port of the running cavity 6. For details, please refer to the attached Figure 5 .

[0031] b. In other embodiments, the curved sealing portion 2 is configured as a concave cavity, which is formed on the side walls of the upper furnace wall 4 and / or the lower furnace wall 5, and the outer end 12 of the curved sealing plate 1 extends into the concave cavity.

[0032] In detail, as attached Figure 3As shown in , the curved sealing portion 2 can be directly formed on the inner wall of the upper furnace wall 4 and / or the lower furnace wall 5, and then the inner wall of the upper furnace wall 4 / lower furnace wall 5 is used to be concave to form a cavity.

[0033] like Figure 4 As shown in , the curved sealing part 2 can also be formed in the upper furnace wall 4 and / or the lower furnace wall 5, and the curved sealing part 2 formed in the lower furnace wall 5 can be filled with sand, and then the curved sealing plate 1 extending downward is inserted into the sand, which has a better blocking effect on the airflow. Alternatively, flexible materials are provided in the curved sealing part 2 formed by the upper furnace wall 4 and the lower furnace wall 5, and the curved sealing plate 1 is embedded in the flexible material and can slide. In this case, the flexible material is also used to achieve blocking of the airflow.

[0034] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, so it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model.

Claims

1. A curved sealing structure applied to a chain-rod type solar cell sintering furnace, arranged in a sintering furnace having a carrying frame (3) and upper and lower furnace walls, wherein the carrying frame (3) is connected to a transmission component and moves along with the transmission component in a walking cavity (6) formed between the upper and lower furnace walls, characterized in that: The invention comprises a curved sealing plate (1) arranged on a mounting frame (3), and a curved sealing portion (2) arranged on an upper and / or lower furnace wall, wherein the curved sealing plate (1) cooperates with the curved sealing portion (2) to form a barrier to shield the cavity port of the running cavity (6), thereby preventing convection of gases inside and outside the sintering furnace through the running cavity (6).

2. The curved seal structure used in a chain-rod type solar cell sintering furnace according to claim 1, characterized in that: The curved sealing plate (1) has a fixed end (11) fixedly connected to the mounting frame (3), and an extension end (12) extending toward the top and / or bottom of the mounting frame (3), and the extension end (12) shields the cavity port of the traveling cavity (6).

3. The curved seal structure used in a chain-rod type solar cell sintering furnace according to claim 2, characterized in that: The height of the curved sealing plate (1) along a direction perpendicular to the length of the mounting frame (3) is not less than the height of the walking chamber (6).

4. The curved seal structure used in a chain-rod type solar cell sintering furnace according to claim 2, characterized in that: The curved sealing portion (2) is formed by a concave cavity structure formed on the upper and / or lower furnace wall, the extended end (12) of the curved sealing plate (1) extends into the concave cavity, and the extended ends (12) arranged on the mounting frame (3) are combined to block the inner and outer spaces of the walking cavity (6).

5. The curved seal structure used in a chain-rod type solar cell sintering furnace according to claim 4, characterized in that: The concave cavity is directly formed by the inner wall surface of the upper and / or lower furnace wall being concave.

6. The curved seal structure used in a chain-rod type solar cell sintering furnace according to claim 4, characterized in that: The concave cavity is directly formed by the concave bottom wall surface of the upper furnace wall, and / or is formed by the concave top wall surface of the lower furnace wall.

7. The curved seal structure used in a chain-rod type solar cell sintering furnace according to claim 2, characterized in that: The curved sealing portion (2) is formed by the inner wall surface structure of the upper and / or lower furnace wall, and the curved sealing plate (1) is arranged close to the inner wall surface of the upper and / or lower furnace wall. The curved sealing plates (1) arranged at the port of the running cavity (6) are combined to cover the cavity port of the running cavity (6).

8. The curved seal structure used in a chain-rod type solar cell sintering furnace according to claim 6, characterized in that: The curved sealing portion (2) formed on the top surface of the lower furnace wall (5) is filled with sand or flexible material; The curved sealing portion (2) formed on the bottom wall surface of the upper furnace wall (4) is filled with flexible material.

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