Exhaust device for improving blockage of organic drain outlet in silicon wafer sintering furnace
By installing an exhaust box and accumulation trough above the oil tank, adding a cleaning port and a cleaning sealing cover, and using a vacuum cleaner to clean the dust, the problem of clogged organic sewage outlets in the sintering furnace was solved, improving cell efficiency and reducing maintenance costs.
Patent Information
- Application Number
- CN202423249012.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-27
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-27
AI Technical Summary
Blockage of the organic wastewater outlet inside the sintering furnace prevents the timely discharge of volatile organic gases, affecting the efficiency of solar cells and the yield of Grade A products, increasing maintenance costs and reducing maintenance cycles.
An exhaust box and accumulation trough are installed above the oil tank, and a cleaning port and cleaning sealing cover are added. A vacuum cleaner is used to suck out the dust through the cleaning port to prevent the dust from spreading and to optimize the shape of the oil tank for easy cleaning.
It effectively prevents dust accumulation, improves the efficiency and A-grade yield of solar cells, extends the maintenance cycle, and reduces maintenance costs.
Smart Images
Figure CN223596552U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application belongs to the technical field of sintering furnace exhaust device, and particularly relates to an exhaust device for improving blockage of an organic exhaust port in a silicon wafer sintering furnace. BACKGROUND
[0002] After screen printing of a solar cell, sintering is needed to form ohmic contact between the silicon wafer and the paste. The wet front and back electrodes and the electric field paste printed by screen printing are volatilized during the sintering process to produce organic gas, which enters the oil tank through the organic exhaust port and is discharged from the machine table through the exhaust port. When the organic gas volatilized and discharged from the sintering furnace, dust is formed at the organic exhaust port. Due to long-time sintering work, dust accumulates in the sintering furnace in the later stage, which causes the organic matter to be unable to be discharged from the furnace in time, resulting in the phenomenon of EL edge clouding of the battery sheet and low efficiency of the battery sheet, which affects the A-grade yield and electrical performance of the battery sheet. The sintering furnace oil tank is completely covered on the organic exhaust port, and the dust blockage cannot be cleaned by opening the organic exhaust port. The sintering furnace maintenance needs to be performed by stopping the line and cooling down, which reduces the maintenance cycle of the sintering furnace and increases the maintenance cost of the sintering furnace.
[0003] The actual situation is that: 1. Dust accumulated by organic gas volatilized during the sintering process of the sintering furnace blocks the exhaust port; 2. Blockage causes the organic volatilized gas to be unable to be discharged from the sintering furnace in time, resulting in the EL edge clouding defect of the battery sheet; 3. Blockage causes the organic volatilized gas to be unable to be discharged from the sintering furnace in time, resulting in low efficiency of the battery sheet; 4. Blockage of the organic exhaust port causes abnormality of the battery sheet, which needs to be maintained by cooling down to ensure the yield and efficiency of the battery sheet, thereby increasing the maintenance cost, reducing the maintenance cycle, and reducing the output of the battery sheet. CONTENT OF THE INVENTION
[0004] In order to solve the above problems, the present application provides an exhaust device for improving the blockage of the organic exhaust port in the silicon wafer sintering furnace. The oil tank is provided with an exhaust tank above it. The upper surface of the oil tank is vertically penetrated by a plurality of exhaust ports. The upper surface of the oil tank is concave and provided with an accumulation groove. The bottom surface of the accumulation groove is vertically penetrated by an exhaust port. The upper surface of the exhaust tank above the accumulation groove is provided with a cleaning port. The shape of the exhaust tank is a double-ladder type shell. The lower ladder surface of the exhaust tank is provided with a cleaning port. The upper ladder surface of the exhaust tank is provided with a heat exhaust pipe. The upper surface of the cleaning port is covered by a cleaning sealing cover plate. The number of cleaning ports is the same as that of exhaust ports. The diameter of the cleaning port is larger than that of the exhaust port. The bottom surface of the cleaning sealing cover plate is provided with heat insulation quartz wool. The shape of the oil tank is optimized to facilitate the addition of cleaning ports. The cleaning ports are located directly above the organic gas exhaust ports. The accumulation groove is also provided above the exhaust port to prevent dust from scattering during normal operation and facilitate subsequent cleaning. During the non-cleaning period, the oil tank cleaning port is locked by the cover plate. The back of the cover plate is made of quartz wool to prevent oil gas leakage and high temperature. The dust collector is a dust collector, which is light and convenient to operate. The suction nozzle is made of an internal quartz tube and an external anti-collision metal sleeve.
[0005] The shape of the oil tank is a rectangular shell. The inside of the oil tank is longitudinally flat and provided with a plurality of exhaust ports. The shape of the exhaust port is a circular straight-through type pipe. The exhaust port is vertically straight and connected to the outside of the oil tank. The shape of the accumulation groove is a rectangular recess. The accumulation groove is externally provided on the outside of all the exhaust ports. The internal depth of the accumulation groove is smaller than the distance between the top surface of the oil tank and the internal top surface of the exhaust tank. By setting the accumulation groove above the exhaust port of the oil tank, the dust discharged from the exhaust port will be accumulated in the accumulation groove first, preventing dust from accumulating in other corners and facilitating dust cleaning.
[0006] The exhaust tank is a ladder type hollow tank. The low surface step surface of the exhaust tank is longitudinally flat and provided with a plurality of cleaning ports. The high surface step center of the exhaust tank is vertically and vertically penetrated by a heat exhaust pipe. The low surface step of the exhaust tank is adjacent to the accumulation groove. By setting the ladder type exhaust tank above the oil tank, the bending is increased, which facilitates the addition of the oil tank cleaning port directly above the organic gas exhaust port. The change in shape does not affect the removal of organic gas.
[0007] The position of the cleaning port corresponds to the position of the exhaust port, the diameter of the cleaning port is larger than the diameter of the dust collector port, the outer four corners of all the cleaning ports are provided with bolt ports, and the upper part of the cleaning port is covered and fixed by a cleaning sealing plate provided with a cleaning sealing plate through the bolt port. By setting the circular cleaning port, the dust collector can be easily inserted into the dust collector, so that the dust in the exhaust port and the accumulation groove can be sucked out. Moreover, the dust collector has a dust filtering system, the dust collector nozzle is wrapped with a heat-resistant metal sleeve made of heat-resistant quartz material, the nozzle diameter is smaller than the oil tank exhaust port, and the length needs to reach the position of the organic gas exhaust port, so that the attached dust can be easily sucked out.
[0008] The shape of the cleaning sealing plate is a rectangular plate, the outer contour size of the cleaning sealing plate is larger than the size of all the cleaning ports, the bottom surface of the cleaning sealing plate is completely covered with heat insulation quartz wool, and the four corners of the cleaning sealing plate and the four corners of the heat insulation sealing cotton are fixedly connected by bolts. The cleaning sealing plate seals the cleaning port during normal use, preventing the exhaust angle position from deviating, and the heat insulation quartz wool at the bottom prevents oil gas leakage and high temperature.
[0009] Advantages:
[0010] The shape of the oil tank is optimized to facilitate the addition of cleaning ports, and the cleaning ports are located directly above the organic gas exhaust port. An accumulation groove is also provided above the exhaust port to prevent dust from scattering during normal operation, making subsequent cleaning easier. During non-cleaning periods, the oil tank cleaning port is locked by a cover plate, the back of the cover plate is made of quartz wool to prevent oil gas leakage and high temperature, and the dust collector is a dust collector, which is light and easy to operate. The nozzle is made of an internal quartz tube and an external anti-collision metal sleeve.
[0011] By providing an accumulation groove above the exhaust port of the oil tank, the dust discharged from the exhaust port will be accumulated in the accumulation groove first, preventing dust from accumulating in other corners, and facilitating dust cleaning.
[0012] By setting a stepped exhaust tank above the oil tank, the bending is increased, the oil tank cleaning port is added directly above the organic gas exhaust port, and the change in shape does not affect the removal of organic gas.
[0013] By setting the circular cleaning port, the dust collector can be easily inserted into the dust collector, so that the dust in the exhaust port and the accumulation groove can be sucked out. Moreover, the dust collector has a dust filtering system, the dust collector nozzle is wrapped with a heat-resistant metal sleeve made of heat-resistant quartz material, the nozzle diameter is smaller than the oil tank exhaust port, and the length needs to reach the position of the organic gas exhaust port, so that the attached dust can be easily sucked out.
[0014] By cleaning the sealing plate during normal use, the cleaning port is sealed to prevent the exhaust angle position from deviating, and the heat insulation quartz wool at the bottom prevents oil gas leakage and high temperature. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 is a top view of the exhaust device for improving the blockage of the organic exhaust port inside the silicon wafer sintering furnace;
[0016] Figure 2 is a front view of the exhaust device for improving the blockage of the organic exhaust port inside the silicon wafer sintering furnace;
[0017] Figure 3 is a left end sectional view of the exhaust device for improving the blockage of the organic exhaust port inside the silicon wafer sintering furnace;
[0018] Figure 4 is a transverse half sectional view of the exhaust device for improving the blockage of the organic exhaust port inside the silicon wafer sintering furnace;
[0019] In the figure; 1, sintering furnace oil tank, 2, exhaust tank, 3, hot exhaust pipe, 4, clean sealing cover plate, 5, clean port, 6, accumulation groove, 7, exhaust port. DETAILED DESCRIPTION
[0020] In order to deepen the understanding of the present application, the present application will be further described below in combination with examples and drawings, and the examples are only used to explain the present application and do not constitute a limitation on the protection scope of the present application.
[0021] Sintering furnace oil tank 1, exhaust tank 2, hot exhaust pipe 3, clean sealing cover plate 4, clean port 5, accumulation groove 6, exhaust port 7.
[0022] As Figure 1 , 2 , 3, 4 are shown;
[0023] The exhaust device for improving the blockage of the organic exhaust port 7 in the silicon wafer sintering furnace, the oil tank 1 of the sintering furnace is provided with an exhaust tank 2 above it, the upper surface of the oil tank 1 is vertically and throughly provided with a plurality of exhaust ports 7, the upper surface of the oil tank 1 is concavely provided with a stacking groove 6, the bottom surface of the stacking groove 6 is vertically and throughly provided with an exhaust port 7, the upper surface of the exhaust tank 2 above the stacking groove 6 is provided with a cleaning port 5, the shape of the exhaust tank 2 is a double-ladder type shell, the low-ladder surface of the exhaust tank 2 is provided with a cleaning port 5, the high-ladder surface of the exhaust tank 2 is provided with a heat exhaust pipe 3, the upper surface of the cleaning port 5 is coveringly provided with a cleaning sealing cover plate 4, the number of the cleaning port 5 is the same as that of the exhaust port 7, the diameter of the cleaning port 5 is larger than that of the exhaust port 7, the bottom surface of the cleaning sealing cover plate 4 is provided with heat insulation quartz wool, the shape of the oil tank 1 is a rectangular shell, the inside of the oil tank 1 is longitudinally and horizontally provided with a plurality of exhaust ports 7, the shape of the exhaust port 7 is a circular straight-through type pipe, the exhaust port 7 is vertically and straightly communicated with the outside of the oil tank 1, the shape of the stacking groove 6 is a rectangular concave groove, the stacking groove 6 is externally provided on the outside of all the exhaust ports 7, the internal depth of the stacking groove 6 is smaller than the distance between the top surface of the oil tank 1 and the internal top surface of the exhaust tank 2, the exhaust tank 2 is a ladder type hollow tank, the low surface step surface of the exhaust tank 2 is longitudinally and horizontally provided with a plurality of cleaning ports 5, the high surface step center of the exhaust tank 2 is vertically and vertically provided with a heat exhaust pipe 3, the low surface step of the exhaust tank 2 is adjacent to the stacking groove 6, the position of the cleaning port 5 corresponds to the position of the exhaust port 7 one by one, the diameter of the cleaning port 5 is larger than that of the dust collector port, the outside of all the cleaning ports 5 is provided with a bolt port at the four corners, the cleaning sealing plate is coveringly and fixedly provided above the cleaning port 5 through the bolt port, the shape of the cleaning sealing plate is a rectangular plate, the outer contour size of the cleaning sealing plate is larger than the size of all the cleaning ports 5, the bottom surface of the cleaning sealing plate is entirely and adhesively coveringly provided with heat insulation quartz wool, the four corners of the cleaning sealing plate and the four corners of the heat insulation sealing cotton are throughly and fixedly connected with the exhaust tank 2 through bolts.
[0024] Implementation example;
[0025] In the production process of the screen production line, through testing the edge "cloud" caused by the battery piece EL, the abnormal bad electric performance, it is determined that the poor effect of internal organic pollution of the sintering furnace leads to it, the screen is informed to suspend feeding, the cleaning port 5 cover plate installed on the exhaust box 2 at the top of the oil tank 1 is opened by using screwdriver, then the dust is sucked out by using the dust collector, the suction nozzle is inserted into the organic gas pollution outlet 7 from the cleaning port 5, the cleaning port 5 cover plate is locked, the screen is informed to continue feeding, in the cleaning process, the sintering does not need to be slowed down, the temperature is lowered, the box is opened, the machine is stopped and the like, the dust blockage of the organic gas pollution outlet 7 generally occurs in the last few days of the maintenance cycle of the sintering furnace, the blockage dust is cleaned through the process, the original sintering furnace maintenance cycle is 30 days, which can be increased to 40 days, the maintenance cycle is greatly increased, the output of the screen is increased, and the maintenance cost is reduced.
[0026] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application, and any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A kind of silicon chip sintering furnace internal improvement organic blowdown mouth plugging exhaust device, the oil tank of sintering furnace is equipped with exhaust tank above, the upper surface of oil tank is vertically through and is equipped with several blowdown mouths, it is characterized in that, The upper surface of the oil tank is concave and provided with accumulation grooves, the bottom surface of the accumulation grooves is vertically penetrated and provided with pollution discharge ports, the upper surface of the exhaust tank above the accumulation grooves is provided with cleaning ports, the shape of the exhaust tank is a double-ladder type shell, the low-ladder surface of the exhaust tank is provided with cleaning ports, the high-ladder surface of the exhaust tank is provided with heat exhaust pipes, the upper surface of the cleaning ports is covered and provided with cleaning sealing cover plates, the number of the cleaning ports is the same as that of the pollution discharge ports, the diameter of the cleaning ports is larger than that of the pollution discharge ports, and the bottom surface of the cleaning sealing cover plates is provided with heat insulation quartz wool.
2. The exhaust device for preventing the clogging of the organic exhaust port in the inside of a silicon wafer sintering furnace according to claim 1, wherein The shape of the oil tank is a rectangular shell, and the inside of the oil tank is longitudinally flush and provided with a plurality of pollution discharge ports, the shape of the pollution discharge ports is a circular straight-through type pipeline, and the pollution discharge ports are vertically straight-through and in communication with the outside of the oil tank.
3. The exhaust device for preventing the clogging of the organic exhaust port in the interior of a silicon wafer sintering furnace according to claim 1, characterized in that, The shape of the accumulation grooves is a rectangular recess, and the accumulation grooves are externally wrapped on the outside of all the pollution discharge ports, and the internal depth distance of the accumulation grooves is smaller than the distance between the top surface of the oil tank and the inside top surface of the exhaust tank.
4. The exhaust device for preventing the clogging of the organic exhaust port in the interior of a silicon wafer sintering furnace according to claim 1, characterized in that, The exhaust tank is a ladder type hollow tank, the low surface step surface of the exhaust tank is longitudinally flush and provided with a plurality of cleaning ports, the high surface step center of the exhaust tank is vertically and vertically penetrated and provided with heat exhaust pipes, and the low surface step of the exhaust tank is adjacent to the accumulation grooves.
5. The exhaust device for preventing the clogging of the organic exhaust port in the interior of a silicon wafer sintering furnace according to claim 1, wherein The positions of the cleaning ports correspond to the positions of the pollution discharge ports one by one, the diameter of the cleaning ports is larger than the diameter of the dust collector ports, the outside corners of all the cleaning ports are provided with bolt ports, and the upper part of the cleaning ports is covered and fixedly provided with cleaning sealing cover plates through the bolt ports.
6. The exhaust device for preventing the clogging of the organic exhaust port in the interior of a silicon wafer sintering furnace according to claim 1, wherein The shape of the cleaning sealing cover plate is a rectangular plate, the outer contour size of the cleaning sealing cover plate is larger than the size of all the cleaning ports, the bottom surface of the cleaning sealing cover plate is entirely adhered and covered with heat insulation quartz wool, and the four corners of the cleaning sealing cover plate and the four corners of the heat insulation sealing cotton are penetrated and fixedly connected with the exhaust tank through bolts.