Exhaust device for sintering processing of photovoltaic cell panel

Abstract

An exhaust device for sintering processing of a photovoltaic cell panel relates to the field of crystalline silicon solar cells and comprises an organic exhaust pipe, an exhaust fan is arranged on the organic exhaust pipe, an air inlet expanding pipe is arranged at the air inlet end of the organic exhaust pipe, and the air inlet expanding pipe is used for enabling exhaust air flow of all positions in a sintering furnace to be consistent. An air inlet panel mechanism is arranged at the air inlet end of the air inlet expanding pipe and comprises an air inlet panel and branch air suction pipes. By improving the structure of the end, connected with the sintering furnace, of the organic exhaust pipe, organic waste gas in the sintering furnace is pumped away, meanwhile, the gas inlet area of the gas inlet end of the organic exhaust pipe is increased, and distribution of multiple gas flows of the branch gas suction pipes on the gas inlet panel is adjusted, so that the gas flows exhausted from all places in the sintering furnace are consistent; therefore, the temperature field distribution in the sintering furnace is more uniform and stable, each part is uniformly heated when the battery piece is sintered, ohm contact is more uniform in the sintering process of the battery piece, poor sintering is reduced, and the battery efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of crystalline silicon solar cell, and particularly to an exhaust device for sintering processing of photovoltaic cell panel. BACKGROUND

[0002] The sintering process is an important technology in the production process of crystalline silicon solar cell, which is to form a good ohmic contact between the screen-printed positive and negative electrodes and the silicon wafer under the action of high temperature. Meanwhile, the high temperature in the sintering furnace can promote the diffusion of hydrogen atoms generated in the coating process to the inside of the cell, which has a good passivation effect on the solar cell and improves the conversion efficiency of the solar cell. The organic exhaust of the sintering furnace heats and burns the harmful organic exhaust gas generated in the sintering process and then removes it by peripheral equipment. At the same time of removing the harmful gas in the sintering furnace, the air in the sintering furnace cavity flows towards the organic exhaust pipe.

[0003] The existing organic exhaust pipe adopts a round pipe design with a diameter of 10 cm, and a hole is opened on the top of the sintering furnace cavity with the same size as the organic exhaust pipe. The internal width of the sintering furnace is 40 cm, and the diameter of the organic exhaust pipe is relatively small compared with the width of the sintering furnace. Therefore, while the organic exhaust pipe removes the organic exhaust gas, it causes the airflow in the middle part of the sintering furnace cavity to be large and the airflow on both sides to be small, resulting in uneven airflow. The transverse lamp tube of the sintering furnace penetrates through the entire sintering furnace, but the uneven airflow and uniform heating of the lamp tube cause the temperature field in the sintering furnace cavity to be uneven. This results in uneven heating of the surface of the cell, leading to poor sintering and loss of electrical performance. SUMMARY

[0004] The present application aims to at least partially solve one of the problems in the related art.

[0005] To this end, the present application aims to provide an exhaust device for sintering processing of photovoltaic cell panel, which makes the airflow in the sintering furnace more uniform and stable, realizes a more uniform and stable temperature field in the sintering furnace, and thus makes the cell uniformly heated, improves the sintering effect, and improves the conversion efficiency of the cell and reduces poor sintering.

[0006] To achieve the above-mentioned purpose, the present application provides an exhaust device for sintering processing of photovoltaic cell panel, which comprises an organic exhaust pipe, an exhaust fan is arranged on the organic exhaust pipe, an air guide pipe is arranged at the air inlet end of the organic exhaust pipe, an air inlet expansion pipe is arranged at the air inlet end of the air guide pipe, the diameter of the air inlet expansion pipe is larger than that of the air guide pipe, the air inlet expansion pipe is used to make the exhaust airflow uniform at each position in the sintering furnace, an air inlet panel mechanism is arranged at the air inlet end of the air inlet expansion pipe, the air inlet panel mechanism comprises an air inlet panel and a plurality of branch air suction pipes, the air inlet panel is provided with holes corresponding to the number of branch air suction pipes, one end of the branch air suction pipe is connected with the hole of the air inlet panel, and the other end is connected with the air inlet expansion pipe.

[0007] Further, the plurality of branch air suction pipes have different diameters, wherein the branch air suction pipes with large diameters are distributed at the edge portions of the air inlet panel, and the branch air suction pipes with small diameters are distributed at the middle position of the air inlet panel, the air outlet ends of the branch air suction pipes with large diameters are connected to the edge portions of the air inlet expansion pipe, and the air outlet ends of the branch air suction pipes with small diameters are connected to the middle position of the air inlet expansion pipe.

[0008] Further, the air inlet panel is provided with an air inlet mesh cover, and the air inlet mesh cover is provided with mesh openings with different diameters, wherein the mesh openings with large diameters correspond to the branch air suction pipes with large diameters, and the mesh openings with small diameters correspond to the branch air suction pipes with small diameters, and the air inlet mesh cover is made of high-thermal-conductivity metal material.

[0009] Further, the edge portions of the air inlet panel are provided with air inlet panel flanges, the bottom portions of the air inlet panel flanges are provided with air-tight pads, and the air inlet panel flanges are used to be tightly connected to the air outlet of the sintering furnace.

[0010] Further, the connection portion of the air inlet expansion pipe and the air guide pipe is provided with a horn connection interface, the air inlet end of the air inlet expansion pipe is provided with an air-tight bottom plate, the connection portion of the air-tight bottom plate and the air inlet expansion pipe is provided with a bottom plate buckle, and the bottom edge of the air inlet expansion pipe is provided with an expansion pipe flange.

[0011] Further, the inside of the air inlet expansion pipe is provided with a flow disturbing mechanism, the flow disturbing mechanism is used to make the air flow rising in the air inlet expansion pipe uniform, and the flow disturbing mechanism comprises a driving assembly and flow disturbing fan blades, wherein the flow disturbing fan blades are arranged at the air inlet end of the air inlet expansion pipe, and the power shaft of the driving assembly is connected to the flow disturbing fan blades.

[0012] Further, the bottom portion of the flow disturbing fan blade is provided with an air inlet mesh plate, and the diameter of the air inlet mesh plate is the same as the inner diameter of the air inlet expansion pipe.

[0013] Further, the driving assembly comprises a driving motor and a motor support rod, wherein the driving motor is connected to the motor support rod, the top portion of the motor support rod is connected to the inner wall of the air inlet expansion pipe through a flow disturbing support, the outside of the driving motor is provided with a motor protective cover, the motor protective cover has a streamline structure, a motor shaft is arranged on the power shaft of the driving motor, a bearing is sleeved on the motor shaft, and the outside of the bearing is connected to the bottom portion of the motor protective cover.

[0014] Further, the air inlet end of the exhaust fan is provided with an exhaust adjusting assembly, the exhaust adjusting assembly comprises an exhaust valve, an adjusting valve rod and an air pressure gauge, wherein the exhaust valve is connected to the air inlet end of the exhaust fan, the adjusting valve rod is arranged on the exhaust valve, and the air pressure gauge is arranged at the air inlet end of the exhaust valve.

[0015] Further, the material of the branch air suction pipe is a stainless steel corrugated pipe, and the inner wall of the branch air suction pipe is further provided with a protective adhesive lining.

[0016] Beneficial effects: the application improves the structure of the organic exhaust pipe connected to one end of the sintering furnace, while the organic exhaust gas in the sintering furnace is extracted, the air inlet area of the air inlet end of the organic exhaust pipe is increased, and the air flow distribution of the branch air suction pipe on the air inlet panel is adjusted, so that the air flow of each place in the sintering furnace is uniform, and the temperature field distribution in the sintering furnace is more uniform and stable, the heating of each place is uniform when the battery piece is sintered, the ohmic contact during the sintering process of the battery piece is more uniform, the sintering defects are reduced, and the battery efficiency is improved.

[0017] Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will become apparent to those skilled in the art upon examination of the following description and the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0018] The above and / or additional aspects and advantages of the application will become apparent and be readily understood from the following description, taken in connection with the accompanying drawings, in which:

[0019] Figure 1 It is an overall structure schematic diagram of the exhaust device for sintering processing of the photovoltaic cell panel according to one embodiment of the application;

[0020] Figure 2 It is a partial structure schematic diagram of the exhaust device for sintering processing of the photovoltaic cell panel according to one embodiment of the application;

[0021] Figure 3 It is a left view sectional view of the exhaust device for sintering processing of the photovoltaic cell panel according to one embodiment of the application;

[0022] Figure 4 It is a bottom view structure schematic diagram of the air inlet panel mechanism in the exhaust device for sintering processing of the photovoltaic cell panel according to one embodiment of the application;

[0023] Figure 5 It is a sectional view of the branch air suction pipe in the exhaust device for sintering processing of the photovoltaic cell panel according to one embodiment of the application.

[0024] As shown in the figure: 1, organic exhaust pipe; 2, exhaust fan; 3, exhaust regulating assembly; 31, exhaust valve; 32, regulating valve rod; 33, air pressure gauge; 4, air guide pipe; 5, air inlet expansion pipe; 51, expansion pipe flange; 52, horn connection; 6, air inlet panel mechanism; 61, branch air inlet pipe; 611, protective adhesive lining; 62, air inlet panel; 63, air-tight pad; 64, air inlet screen cover; 65, air inlet panel flange; 7, drive assembly; 71, turbulence support; 72, motor support rod; 73, motor protective cover; 74, drive motor; 75, bearing; 8, turbulence mechanism; 81, motor shaft; 82, turbulence fan blade; 83, air inlet screen; 84, air-tight bottom plate; 85, bottom plate buckle. DETAILED DESCRIPTION

[0025] The embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0026] The exhaust device for sintering processing of photovoltaic cell panel is described below in combination with the accompanying drawings.

[0027] As Figures 1-3 shown, the exhaust device for sintering processing of photovoltaic cell panel provided by the embodiments of the present application comprises an organic exhaust pipe 1, the organic exhaust pipe 1 is provided with an exhaust fan 2, the air inlet end of the organic exhaust pipe 1 is provided with an air guide pipe 4, the air inlet end of the air guide pipe 4 is provided with an air inlet expansion pipe 5, the caliber of the air inlet expansion pipe 5 is larger than that of the air guide pipe 4, and the air inlet expansion pipe 5 is used to make the exhaust air flow rate consistent at each position in the sintering furnace.

[0028] The air inlet end of the air inlet expansion pipe 5 is provided with an air inlet panel mechanism 6, the air inlet panel mechanism 6 is used to average the air inlet flow, and the air inlet panel mechanism 6 comprises an air inlet panel 62 and a branch air inlet pipe 61, wherein a plurality of branch air inlet pipes 61 are arranged on the air inlet panel 62, and the two ends of the plurality of branch air inlet pipes 61 are respectively connected with the air inlet panel 62 and the air inlet expansion pipe 5; the air inlet panel 62 is provided with holes corresponding to the number of the branch air inlet pipes 61, one end of the branch air inlet pipe 61 is connected with the hole of the air inlet panel 62, and the other end is connected with the air inlet expansion pipe 5.

[0029] Specifically, the present application adds the air inlet expansion pipe 5 at the original organic exhaust pipe 1 connecting position on the sintering furnace cavity, the air exhaust caliber of the organic exhaust pipe is expanded from 10 cm to 40 cm, which can cover the entire top exhaust port of the sintering furnace cavity.

[0030] When the organic exhaust pipe 1 is in operation, the bottom of the organic exhaust pipe 1 is installed with the exhaust port of the top of the sintering furnace cavity through the air inlet panel 62, the shape of the air inlet panel 62 can be designed according to the size of the exhaust port of the sintering furnace, so that the sintering furnace exhaust gas flow can be completely covered, and along with the negative pressure suction generated by the exhaust fan 2, the gas in the sintering furnace flows uniformly upward along the branch suction pipe 61 on the air inlet panel 62, and is concentrated and transmitted to the air inlet expansion pipe 5, and then is collected into the organic exhaust pipe 1 for transfer and discharge.

[0031] By adjusting the distribution of the branch suction pipe 61 on the air inlet panel 62, the gas flow velocity on both sides and in the middle of the sintering furnace cavity is consistent, which ensures that the gas flow in the entire sintering furnace is uniform and stable, and further makes the temperature field distribution in the sintering furnace more uniform and stable, so that the heating of each place in the sintering process of the battery piece is uniform, the ohmic contact in the sintering process of the battery piece is more uniform, and the sintering defects are reduced and the battery efficiency is improved.

[0032] In an embodiment of the present application, as shown in Figures 2-5 , the multiple branch suction pipes 61 have different diameters, wherein the branch suction pipes 61 with large diameters are distributed at the edge part of the air inlet panel 62, and the branch suction pipes 61 with small diameters are distributed at the middle position of the air inlet panel 62.

[0033] The outlet end of the branch suction pipe 61 with large diameter is connected with the edge part of the air inlet expansion pipe 5, and the outlet end of the branch suction pipe 61 with small diameter is connected with the middle position of the air inlet expansion pipe 5.

[0034] Specifically, due to the disturbance and heat dissipation effect of the sintering furnace wall, the gas flow velocity and temperature near the sintering furnace wall are relatively low, and the gas flow velocity and temperature in the center of the sintering furnace are relatively high. In the present application, the branch suction pipe 61 with large diameter is installed at the edge part of the air inlet panel 62, and the branch suction pipe 61 with small diameter is installed at the middle position of the air inlet panel 62, as shown in Figure 5 , so that the gas flow at the edge of the sintering furnace is passively increased, and the hot gas flow in the center of the sintering furnace is transferred to both sides, thereby balancing the temperature in the sintering furnace and keeping the gas flow velocity at each place in the sintering furnace consistent. Finally, the gas flow enters the air inlet expansion pipe 5 along the branch suction pipe 61, and is discharged along the organic exhaust pipe 1.

[0035] In an embodiment of the present application, as shown in Figures 2-4 , the air inlet panel 62 is provided with an air inlet mesh cover 64, and the air inlet mesh cover 64 is provided with mesh openings with different diameters, wherein the mesh openings with large diameters correspond to the branch suction pipes 61 with large diameters, and the mesh openings with small diameters correspond to the branch suction pipes 61 with small diameters, and the material of the air inlet mesh cover 64 is a high-thermal-conductivity metal material.

[0036] Specifically, in the high-thermal-conductivity metal material air inlet mesh cover 64, as shown in Figure 4As shown, the air inlet net cover 64 keeps the temperature of the exhaust end of the top of the sintering furnace consistent due to the heat conduction, and the air inlets of different positions of the air inlet net cover 64 correspond to the branch air suction pipes 61 of different diameters, which are used to match the air inlet of the branch air suction pipes 61 of different diameters, further disturb the airflow in the center of the sintering furnace, and make the center airflow flow to both sides, thereby improving the uniformity of the airflow in the sintering furnace.

[0037] In one embodiment of the present application, as shown in Figure 5 As shown, the edge part of the air inlet panel 62 is provided with an air inlet panel flange 65, the bottom of the air inlet panel flange 65 is provided with an air-tight gasket 63, the air inlet panel flange 65 is used to be connected with the air outlet of the sintering furnace, and the air-tight gasket 63 makes the air inlet panel 62 tightly connected with the air outlet of the sintering furnace.

[0038] In one embodiment of the present application, as shown in Figure 2 and Figure 3 As shown, the connection part of the air inlet expansion pipe 5 and the air guide pipe 4 is provided with a horn connection 52, the air inlet end of the air inlet expansion pipe 5 is provided with an air-tight bottom plate 84, the air-tight bottom plate 84 is provided with a bottom plate buckle 85 at the connection part of the air inlet expansion pipe 5, and the bottom edge of the air inlet expansion pipe 5 is provided with an expansion pipe flange 51.

[0039] Specifically, the horn connection 52 makes the air inlet expansion pipe 5 and the air guide pipe 4 smoothly connected, reduces the airflow resistance, the air-tight bottom plate 84 is used for the sealed connection of the branch air suction pipe 61 and the bottom of the air inlet expansion pipe 5, prevents air leakage, the expansion pipe flange 51 is used for the installation and fixation of the air inlet expansion pipe 5, and the air inlet expansion pipe 5 and the air inlet panel 62 can be flexibly installed respectively, which are used to adapt to sintering furnaces of different positions and different types.

[0040] In one embodiment of the present application, as shown in Figure 2 and Figure 3 As shown, the inside of the air inlet expansion pipe 5 is provided with a turbulence mechanism 8, the turbulence mechanism 8 is used to make the airflow in the air inlet expansion pipe 5 uniformly flow, the turbulence mechanism 8 includes a driving assembly 7 and turbulence fan blades 82, the turbulence fan blades 82 are arranged at the air inlet end of the air inlet expansion pipe 5, and the power shaft of the driving assembly 7 is connected with the turbulence fan blades 82.

[0041] Specifically, in order to fully improve the gas transmission speed of the large-diameter branch air suction pipe 61, and further improve the uniformity of the airflow transmission at the bottom of the air inlet panel 62, the turbulence fan blades 82 are arranged in the air inlet expansion pipe 5, and the turbulence fan blades 82 are driven to rotate by the driving assembly 7. Due to the large rotation speed of the outer circle of the turbulence fan blades 82 and the slow rotation speed of the inner circle of the turbulence fan blades 82, the airflow transmission speed of the branch air suction pipe 61 at the outer circle of the air inlet panel 62 is large, and the airflow transmission speed of the branch air suction pipe 61 at the inner circle of the air inlet panel 62 is slow. The high-speed and high-temperature airflow at the center of the sintering furnace flows to both sides, so that the airflow and temperature at each place in the sintering furnace are equal, and the sintering effect of the battery piece is improved.

[0042] In an embodiment of the present application, as shown in Figure 3 The bottom of the turbulence fan blade 82 is provided with an air inlet mesh plate 83, and the caliber of the air inlet mesh plate 83 is the same as the inner diameter of the air inlet expansion pipe 5. In the process of rotating the turbulence fan blade 82, in order to prevent the airflow below the turbulence fan blade 82 from centrifugal rotation, and prevent the airflow density at the edge of the air inlet expansion pipe 5 from being large and the airflow density in the middle from being small. The airflow is separated by the air inlet mesh plate 83, and the airflow below the turbulence fan blade 82 only transmits upward along the air inlet mesh plate 83, but does not rotate with the turbulence fan blade 82, preventing the airflow density at the edge of the air inlet expansion pipe 5 from being large and the airflow density in the middle from being small, and making the airflow entering the air inlet expansion pipe 5 more uniform.

[0043] In an embodiment of the present application, as shown in Figure 3 The driving assembly 7 includes a driving motor 74 and a motor support rod 72, wherein the driving motor 74 is connected with the motor support rod 72, and the top of the motor support rod 72 is connected with the inner wall of the air inlet expansion pipe 5 by arranging a turbulence support 71.

[0044] The outside of the driving motor 74 is provided with a motor protection cover 73, the motor protection cover 73 is a streamline structure, the driving motor 74 is provided with a motor shaft 81 on the power shaft, the motor shaft 81 is sleeved with a bearing 75, and the outside of the bearing 75 is connected with the bottom of the motor protection cover 73, so as to protect the driving motor 74 in all directions.

[0045] Specifically, the driving motor 74 is electrified to drive the motor shaft 81 to rotate, and the motor shaft 81 drives the turbulence fan blade 82 to rotate. In this process, the motor support rod 72 is used to fix the driving motor 74 in the vertical direction, and the turbulence support 71 fixes and supports the motor support rod 72. In addition, the turbulence support 71 makes the rising airflow rise vertically and uniformly, preventing the airflow from rotating. The motor protection cover 73 protects the driving motor 74, prevents the organic gas from corroding the inside of the driving motor 74, and the motor protection cover 73 is a streamline structure which can reduce the resistance influence on the airflow.

[0046] In an embodiment of the present application, as shown in Figure 2As shown, the air inlet end of the exhaust fan 2 is provided with an exhaust adjusting assembly 3, which comprises an exhaust valve 31, an adjusting valve rod 32 and an air pressure gauge 33, wherein the exhaust valve 31 is connected with the air inlet end of the exhaust fan 2, the adjusting valve rod 32 is arranged on the exhaust valve 31, and the air pressure gauge 33 is arranged at the air inlet end of the exhaust valve 31.

[0047] Specifically, during use, the gas pressure in the organic exhaust pipe 1 is monitored in real time through the air pressure gauge 33, in order to adjust the exhaust speed of the organic exhaust pipe 1 and prevent the gas pressure in the organic exhaust pipe 1 from being too high, the opening degree of the exhaust valve 31 is adjusted by rotating the adjusting valve rod 32, thereby adjusting the exhaust speed of the organic exhaust pipe 1.

[0048] In an embodiment of the present application, as shown in Figure 2 The branch air suction pipe 61 is made of a stainless steel bellows, and the inner wall of the branch air suction pipe 61 is further provided with a protective adhesive lining 611.

[0049] Specifically, the branch air suction pipe 61 made of a stainless steel bellows provides the effect of flexible bending, so that the air inlet panel 62 can be flexibly installed at any position without affecting the gas transmission, the protective adhesive lining 611 on the inner wall of the branch air suction pipe 61 can reduce the adsorption of organic matter on the inner wall of the branch air suction pipe 61, prevent the inner wall of the branch air suction pipe 61 from being contaminated, and in addition, the inner wall dirt of the branch air suction pipe 61 can be cleaned by replacing the protective adhesive lining 611, which is convenient to maintain.

[0050] In order to clearly illustrate the above-mentioned embodiments, with reference to Figures 1-5 The working principle of the exhaust device for sintering processing of the photovoltaic cell panel of the present application is as follows:

[0051] In use, the organic exhaust pipe 1 is first installed at the bottom through the air inlet panel 62 and the exhaust port at the top of the sintering furnace cavity, the shape of the air inlet panel 62 is designed according to the shape of the exhaust port of the sintering furnace, so that the exhaust gas flow is completely covered. Then, the organic exhaust pipe 1 generates a negative pressure suction force through the exhaust fan 2, so that the gas in the sintering furnace flows uniformly upward along the branch air suction pipe 61 on the air inlet panel 62.

[0052] The large-diameter branch air suction pipe 61 is installed at the edge of the air inlet panel 62, and the small-diameter branch air suction pipe 61 is installed in the middle, so that the gas flow at the edge of the sintering furnace is increased, the central hot gas flow is transferred to both sides, and temperature balance and uniform gas flow speed are achieved. When the air is inlet, the air inlet screen cover 64 keeps the temperature of the exhaust end at the top of the sintering furnace consistent due to the heat conduction effect.

[0053] Then, the air flow enters the air inlet expansion pipe 5 along the branch air suction pipe 61, the air disturbance fan 82 is arranged in the air inlet expansion pipe 5 and is driven to rotate by the driving assembly 7, due to the high speed of the outer ring of the air disturbance fan 82 and the low speed of the inner ring, the air flow transmission speed of the outer ring of the air inlet panel 62 branch air suction pipe 61 is high, and the air flow transmission speed of the inner ring of the branch air suction pipe 61 is low, so that the high-speed and high-temperature air flow in the center of the sintering furnace flows to both sides, the air flow and temperature everywhere are equal, and finally the gas is discharged through the organic exhaust pipe 1.

[0054] By adjusting the distribution of the branch air suction pipe 61 on the air inlet panel 62, the air flow speed of both sides and the middle of the sintering furnace cavity is consistent, the uniform and stable air flow in the sintering furnace is ensured, the temperature field distribution is more uniform and stable, the battery piece is heated uniformly during sintering, the ohmic contact is more uniform, the sintering failure is reduced, and the battery efficiency is improved.

[0055] In summary, the exhaust device for sintering processing of the photovoltaic cell panel of the embodiment of the present application improves the structure of the organic exhaust pipe connected to one end of the sintering furnace, meets the requirement of removing the organic waste gas in the sintering furnace, adjusts the air flow distribution of the branch air suction pipe on the air inlet panel, and makes the air flow uniform at each place in the sintering furnace, so that the temperature field distribution in the sintering furnace is more uniform and stable, the battery piece is heated uniformly during sintering, the ohmic contact is more uniform during the sintering process of the battery piece, the sintering failure is reduced, and the battery efficiency is improved.

[0056] Although the embodiments of the present application have been shown and described above, it should be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can make changes, modifications, replacements and deformations to the above-mentioned embodiments within the scope of the present application.

Claims

1. An exhaust device for sintering process of photovoltaic cell panel, comprising an organic exhaust pipe (1), an exhaust fan (2) is arranged on the organic exhaust pipe (1), characterized in that, The air inlet end of the organic exhaust pipe (1) is provided with a wind guide pipe (4), the air inlet end of the wind guide pipe (4) is provided with an air inlet expansion pipe (5), and the caliber of the air inlet expansion pipe (5) is larger than that of the wind guide pipe (4); The air inlet end of the air inlet expansion pipe (5) is provided with an air inlet panel mechanism (6), the air inlet panel mechanism (6) comprises an air inlet panel (62) and a plurality of branch air suction pipes (61), the air inlet panel (62) is provided with holes corresponding to the number of branch air suction pipes (61), one end of the branch air suction pipe (61) is connected with the hole of the air inlet panel (62), and the other end is connected with the air inlet expansion pipe (5).

2. The exhaust device for sintering process of photovoltaic cell panel according to claim 1, characterized in that, The calibers of the plurality of branch air suction pipes (61) are different, wherein the branch air suction pipes (61) with large caliber are distributed at the edge part of the air inlet panel (62), and the branch air suction pipes (61) with small caliber are distributed at the middle position of the air inlet panel (62). The air outlet end of the branch air suction pipe (61) with large caliber is connected with the edge part of the air inlet expansion pipe (5), and the air outlet end of the branch air suction pipe (61) with small caliber is connected with the middle position of the air inlet expansion pipe (5).

3. The exhaust device for sintering process of photovoltaic panels according to claim 2, characterized in that, The air inlet panel (62) is provided with an air inlet mesh cover (64), the air inlet mesh cover (64) is provided with mesh openings with different calibers, wherein the mesh openings with large caliber correspond to the branch air suction pipes (61) with large caliber, the mesh openings with small caliber correspond to the branch air suction pipes (61) with small caliber, and the material of the air inlet mesh cover (64) is a high-thermal-conductivity metal material.

4. The exhaust device for sintering process of photovoltaic panels according to claim 3, characterized in that, The edge part of the air inlet panel (62) is provided with an air inlet panel flange (65), the bottom of the air inlet panel flange (65) is provided with an air-tight pad (63), and the air inlet panel flange (65) is used for being tightly connected with the air outlet of the sintering furnace.

5. The exhaust apparatus for sintering process of photovoltaic cell panel according to claim 2, characterized in that, The connection part of the air inlet expansion pipe (5) and the wind guide pipe (4) is provided with a horn connection (52), the air inlet end of the air inlet expansion pipe (5) is provided with an air-tight bottom plate (84), the air-tight bottom plate (84) is provided with a bottom plate buckle (85) at the connection part of the air inlet expansion pipe (5), and the bottom edge of the air inlet expansion pipe (5) is provided with an expansion pipe flange (51).

6. The exhaust apparatus for sintering process of photovoltaic panels according to claim 1, characterized in that, The inside of the air inlet expansion pipe (5) is provided with a turbulence mechanism (8), the turbulence mechanism (8) is used for uniformly flowing the air flow rising in the air inlet expansion pipe (5), the turbulence mechanism (8) comprises a driving assembly (7) and turbulence fan blades (82), wherein the turbulence fan blades (82) are arranged at the air inlet end of the air inlet expansion pipe (5), and the power shaft of the driving assembly (7) is connected with the turbulence fan blades (82).

7. The exhaust apparatus for sintering process of photovoltaic cell panel according to claim 6, characterized in that, The bottom of the turbulence fan blades (82) is provided with an air inlet mesh plate (83), and the caliber of the air inlet mesh plate (83) is the same as the inner diameter of the air inlet expansion pipe (5).

8. The exhaust apparatus for sintering process of photovoltaic panel according to claim 6, characterized in that, The driving assembly (7) comprises a driving motor (74) and a motor support rod (72), wherein the driving motor (74) is connected with the motor support rod (72), and the top of the motor support rod (72) is connected with the inner wall of the air inlet expansion pipe (5) through a turbulence support (71); The driving motor (74) is externally provided with a motor protective cover (73) in streamline structure, a motor shaft (81) is arranged on the power shaft of the driving motor (74), a bearing (75) is sleeved on the motor shaft (81), and the outer portion of the bearing (75) is connected with the bottom of the motor protective cover (73).

9. The exhaust apparatus for sintering process of photovoltaic panels according to claim 1, characterized in that, The air inlet end of the exhaust fan (2) is provided with an exhaust adjusting assembly (3), the exhaust adjusting assembly (3) comprises an exhaust valve (31), an adjusting valve rod (32) and a barometer (33), wherein the exhaust valve (31) is connected with the air inlet end of the exhaust fan (2), the adjusting valve rod (32) is arranged on the exhaust valve (31), and the barometer (33) is arranged at the air inlet end of the exhaust valve (31).

10. The exhaust apparatus for sintering process of photovoltaic panels according to claim 1, characterized in that, The material of the branch air suction pipe (61) is a stainless steel corrugated pipe, and the inner wall of the branch air suction pipe (61) is further provided with a protective adhesive lining (611).

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