CN217988834U - Oil collection treatment system and sintering furnace - Google Patents

Abstract

The utility model discloses an oily processing system and fritting furnace collect. The oil collecting treatment system comprises an anti-backflow device, the anti-backflow device comprises an anti-backflow pipe and an anti-backflow cover, the outer wall of the anti-backflow cover is narrowed from one end to the other end, the larger end of the radial size of the anti-backflow cover forms an air inlet end, the smaller end of the radial size of the anti-backflow cover forms an air outlet end, the anti-backflow cover is connected to the inner wall of the anti-backflow pipe, and the outer wall of the anti-backflow cover and the inner wall of the anti-backflow pipe form a collecting tank for collecting oil drops. The sintering furnace comprises a sintering furnace main body and an oil collecting treatment system, wherein the oil collecting treatment system is connected to at least one exhaust pipeline of the sintering furnace main body. The utility model discloses an oily processing system of collection can promote the organic matter collection ability of fritting furnace, improve organic calandria and collect the organic matter ability, solve the greasy dirt problem, promote PERC solar cell yield, improve productivity and production security.

Description

Oil collection treatment system and sintering furnace

Technical Field

The utility model relates to a solar energy technical field especially relates to an album oil processing system and PERC fritting furnace.

Background

In the process of manufacturing a solar Cell, such as a PERC (Passivated emitter and reactor Cell), after printing slurry on a silicon wafer, the silicon wafer needs to be dried → presintered → sintered → cooled → sorted. The process mainly adopts a PERC solar cell sintering furnace.

The printed slurry mainly comprises silver, an inorganic phase and an organic phase, wherein in the sintering and drying processes of the organic phase, a part of organic matters can volatilize at high temperature in a PERC solar cell sintering furnace cavity and are discharged along with an air exhaust system, and a part of organic matters can not be fully combusted in a combustion tower cavity and still exist in the form of the organic matters at high temperature and volatilize along with the air exhaust system in an organic exhaust pipeline.

The temperature of the organic gas is rapidly reduced after leaving the interior of the sintering chamber, and the organic gas is attached to the interior of the organic exhaust pipe in the form of oil. After organic matters in the organic exhaust pipeline are accumulated for a period of time, the organic matters can drip into the sintering furnace and/or onto the PERC solar cell along the organic exhaust pipeline in the form of oil drops if not cleaned in time, so that the PERC solar cell is polluted. In addition, because the temperature in the chamber of the PERC solar cell sintering furnace is as high as 800 ℃, the oil stains are in fire risk when dropping to the chamber.

Therefore, the conventional PERC solar cell sintering furnace cannot meet the requirements of PERC solar cells on the cleanliness and stability of the silicon wafer surface.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide an oil collecting treatment system for solving the problem that the conventional PERC solar cell sintering furnace cannot meet the requirements of the PERC solar cell on the cleanliness of the silicon wafer surface, the stability in the sintering cavity and the stability. The utility model discloses an oily processing system of collection can promote the organic matter collection ability of fritting furnace, improve organic calandria and collect the organic matter ability, solve the greasy dirt problem, promote PERC solar cell yield, improve productivity and production security.

The utility model provides an album oil processing system, includes anti-reflux device, anti-reflux device is including anti-return pipe and anti-return cover, the outer wall of anti-return cover is narrowed by one end to the other end, the great one end of anti-return cover radial dimension forms the inlet end, the less one end of anti-return cover radial dimension forms the end of giving vent to anger, the anti-return cover connect in the inner wall of anti-return pipe, the outer wall of anti-return cover with the inner wall of anti-return pipe forms the collecting vat of collecting oil and dripping.

In some embodiments, the oil collecting treatment system further comprises an oil collecting device, and the backflow prevention device and the oil collecting device are sequentially connected in sequence along the airflow direction; the oil collecting device comprises an oil collecting pipe and a condenser, one end of the oil collecting pipe is connected with the backflow preventing pipe and the other end of the backflow preventing pipe is used for being connected with a plant air draft system, and the condenser is communicated with the oil collecting pipe to condense oil drops in the oil collecting pipe.

In some embodiments, the oil collector further comprises an oil collector connected to the condenser for collecting condensed oil droplets.

In some embodiments, the oil collector is an oil collecting barrel.

In some embodiments, the number of the oil collecting pipes is multiple, and the oil collecting pipes are arranged in parallel.

In some embodiments, the oil collecting processing system further comprises a speed increasing device, and the speed increasing device, the backflow preventing device and the oil collecting device are sequentially connected in sequence along the airflow direction, and the speed increasing device is used for increasing the airflow speed.

In some of these embodiments, the speed increasing device is a venturi tube.

In some embodiments, the backflow prevention device further includes a drainage pipeline, the backflow prevention pipe is provided with a collection hole, the collection hole is communicated with the collection tank, and the drainage pipeline is connected to the backflow prevention pipeline and is communicated with the collection hole.

In some embodiments, the backflow prevention cover is of a hollow frustum structure overall.

The oil collecting treatment system can improve the organic matter collecting capacity of the sintering furnace, improve the organic matter collecting capacity of the organic drain pipe, solve the oil stain problem, improve the yield of the solar cell, and improve the productivity and the production safety. Above-mentioned collection oil processing system reforms transform through optimal design, sets up anti-reflux pipe and anti-reflux cover, collects the oil drop in the anti-reflux pipe, and the oil drop storage of collection has avoided oil drop backward flow in the collecting vat, promotes the collection ability that oil drops, so, and the battery piece greasy dirt problem obtains obviously improving.

According to the oil collecting treatment system, the drainage pipeline is arranged, so that oil drops accumulated in the collecting tank can effectively flow out in time, and the problem of oil drop backflow is greatly reduced.

Above-mentioned collection oil processing system promotes the volatilization of pipeline inside organic matter through the venturi effect through setting up acceleration rate device for example venturi, and the residue that the oil drips that significantly reduces.

Another object of the utility model is to provide a sintering furnace.

A sintering furnace comprises a sintering furnace main body and the oil collection treatment system, wherein the oil collection treatment system is connected to at least one exhaust pipeline of the sintering furnace main body.

The sintering furnace is provided with the oil collecting treatment system, so that the oil stain problem of the battery piece caused by the falling back of oil drops is solved, the oil stain proportion of the battery piece caused by the falling back of the oil drops is greatly reduced from the traditional 0.88% to 0.01%, and the oil stain proportion is reduced by 99%; after the oil stain is solved, the maintenance time of the sintering furnace and the shutdown maintenance frequency are reduced, the production cost is reduced, the productivity is improved, and the yield per shift is improved by more than 455 pieces.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the application, and that other drawings can be derived from these drawings by a person skilled in the art without inventive effort.

For a more complete understanding of the present application and its advantages, reference is now made to the following descriptions taken in conjunction with the accompanying drawings. Wherein like reference numerals refer to like parts in the following description.

Fig. 1 is a schematic view of an oil collecting processing system according to an embodiment of the present invention;

fig. 2 is a schematic view of a backflow prevention device of an oil collection processing system according to an embodiment of the present invention;

fig. 3 is a schematic view of an oil collecting device of an oil collecting processing system according to an embodiment of the present invention;

fig. 4 is a schematic view of a speed increasing device of an oil collecting processing system according to an embodiment of the present invention;

fig. 5 is a schematic view of a sintering furnace according to an embodiment of the present invention.

Description of the reference numerals

10. An oil collection treatment system; 100. a backflow prevention device; 110. a backflow prevention pipe; 120. a backflow prevention cover; 130. collecting tank; 140. a drainage conduit; 200. an oil collector; 210. an oil collecting pipe; 220. a condenser; 230. an oil collecting member; 300. a venturi tube; 20. and (5) sintering.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and for simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or simply mean that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

In the description of the present invention, a plurality of means is one or more, a plurality of means is two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The embodiment of the application provides an oil collecting processing system 10 to solve the problem that the traditional sintering furnace cannot meet the requirements of the PERC solar cell on the cleanliness and the stability of the surface of a silicon wafer. The following description will be made with reference to the accompanying drawings.

Fig. 1 shows an exemplary oil collecting processing system 10 provided in an embodiment of the present application, and fig. 1 is a schematic structural diagram of the oil collecting processing system 10 provided in the embodiment of the present application. The present collection treatment system 10 can be used in PERC solar cell manufacturing applications.

In order to more clearly illustrate the structure of the oil collection treatment system 10, the oil collection treatment system 10 will be described with reference to the drawings.

Referring to fig. 1 and 2, an oil collection treatment system 10 includes a backflow prevention device 100. The backflow prevention device 100 includes a backflow prevention pipe 110 and a backflow prevention cover 120. The outer wall of the backflow preventing cover 120 narrows from one end to the other. The larger radial dimension of the anti-backflow cap 120 forms an air inlet (the lower side of the angular anti-backflow cap 120 shown in fig. 2 is the air inlet), and the smaller radial dimension of the anti-backflow cap 120 forms an air outlet (the upper side of the angular anti-backflow cap 120 shown in fig. 2 is the air outlet). The backflow preventing cover 120 is attached to the inner wall of the backflow preventing pipe 110. The outer wall of the backflow prevention cover 120 and the inner wall of the backflow prevention pipe 110 form a collection tank 130 that collects oil droplets. When the backflow prevention device 100 is installed, the backflow prevention pipe 110 is arranged in the vertical direction, so that oil drops on the inner wall of the backflow prevention pipe 110 can conveniently flow back into the collecting tank 130 under the action of self weight.

Above-mentioned collection oil processing system 10 reforms transform through optimal design, sets up anti-return pipe 110 and anti-return cover 120, collects the oil drop in the anti-return pipe 110, and the oil drop storage of collection has avoided oil drop backward flow in collecting vat 130, promotes the collection ability that oil drops, and so, the battery piece greasy dirt problem is obviously improved.

In some embodiments, referring to fig. 3, the oil collecting processing system 10 further includes an oil collecting device 200. The backflow prevention device 100 and the oil collection device 200 are sequentially connected in the air flow direction. The oil collecting device 200 includes an oil collecting pipe 210 and a condenser 220. One end of the oil collecting pipe is connected to the backflow prevention pipe 110, the other end of the oil collecting pipe is used for being connected to a plant air draft system, and the condenser 220 is communicated with the oil collecting pipe and used for condensing oil drops in the oil collecting pipe. When installed, the oil collection pipe 210 is installed horizontally, as shown in fig. 3.

In some of these embodiments, the oil trap 200 further includes an oil trap 230. An oil trap 230 is connected to the condenser 220 for collecting condensed oil droplets. When the condenser is installed, the oil collector 230 is arranged below the condenser 220, and oil drops in the condenser 220 can enter the oil collector 230 under the action of self weight.

In some of these embodiments, oil collector 230 is an oil collection barrel. It will be appreciated that in other embodiments, the oil traps 230 may also be of other types, such as oil traps, etc.

In some embodiments, please refer to fig. 3, the number of the oil collecting pipes is multiple. The plurality of oil collecting pipes are arranged in parallel.

In some embodiments, please refer to fig. 4, the oil collecting processing system 10 further includes a speed increasing device. The speed increasing device, the backflow preventing device 100 and the oil collecting device 200 are sequentially connected along the airflow direction, and the speed increasing device is used for increasing the airflow speed. The principle of the speed increasing device is to increase the air flow speed by reducing the unit area while keeping the flow rate constant.

In some embodiments, referring to fig. 4, the speed increasing device is a venturi 300. The oil collecting treatment system 10 can promote the volatilization of organic matters in the pipeline through the venturi effect by arranging a speed increasing device such as a venturi tube 300, thereby greatly reducing the residue of oil drops. When installed, the venturi 300 is installed in a vertical orientation, as shown in figure 1.

In some of these embodiments, the backflow device 100 further includes a drain conduit 140. The backflow prevention pipe 110 is provided with a collection hole, the collection hole is communicated with the collection tank 130, and the drainage pipeline 140 is connected to the backflow prevention pipe 110 and communicated with the collection hole. According to the oil collecting treatment system 10, the drainage pipeline 140 is arranged, so that oil drops accumulated in the collecting tank 130 can effectively flow out in time, and the problem of oil drop backflow is greatly reduced.

In some of these embodiments, the backflow prevention shield 120 is a hollow frustum structure as a whole.

In some embodiments, the backflow prevention pipe 110 is a cylindrical tubular structure, correspondingly, the backflow prevention cover 120 is a tapered cylindrical structure as a whole, and the maximum radial dimension of the backflow prevention cover 120 is the same as the inner diameter of the backflow prevention pipe 110, so that the backflow prevention cover 120 can be in contact fit with the inner wall of the backflow prevention pipe 110, the larger end of the radial dimension of the backflow prevention cover 120 can be connected with the inner wall of the backflow prevention pipe 110 in a sealing manner, and oil drop leakage is avoided. In addition, the outer wall of the anti-backflow cover 120 with the frustum structure and any position of the inner wall of the anti-backflow pipe 110 are provided with a gap, so that oil drops at any position of the inner wall of the anti-backflow pipe 110 can flow into the collecting tank 130.

In some embodiments, the backflow prevention device 100, the oil collection device 200, and the venturi tube 300 are made of a metal with high temperature resistance.

Another object of the present invention is to provide a sintering furnace 20.

Referring to fig. 5, a sintering furnace 20 includes a sintering furnace main body and an oil collecting processing system 10, wherein the oil collecting processing system 10 is connected to at least one exhaust pipe of the sintering furnace main body. The sintering furnace 20 described above may be used in the fabrication of PERC solar cells.

Referring to fig. 5, the sintering furnace body comprises a furnace body, a heating lamp tube, an air inlet system, an exhaust system, a cooling system and a conveyor belt for conveying solar cells, wherein the furnace body comprises a drying area, a pre-sintering area, a sintering area and a cooling area which are sequentially arranged along the conveying direction of the conveyor belt; the drying zone is at least provided with an organic exhaust module, an air inlet module and a heating module, the temperature of the drying zone is adjusted by the heating module and the air inlet module to be within the adjusting range of 200-400 ℃, and the organic matter exhaust flow can be adjusted by the organic exhaust module; the organic exhaust module is used for adjusting the exhaust flow of organic matters; the sintering zone comprises at least one organic discharging module, an air inlet module and a heating module, the temperature of a mould in the sintering zone is adjusted by the heating module and the air inlet module to have an adjusting range of 500-1000 ℃, and the organic discharging flow can be adjusted by the organic discharging module; the cooling system comprises a water cooling and air cooling system, and the temperature is reduced to below 50 ℃.

The sintering furnace 20 is provided with the oil collecting treatment system 10, so that the problem of oil contamination of the battery piece caused by the falling back of oil drops is solved, the contamination of the battery piece caused by the falling back of the oil drops is greatly reduced, and through tests, the proportion of the oil contamination of the battery piece is reduced to 0.01% from 0.88% in the traditional process, and the reduction amplitude reaches 99%; after the oil stain is solved, the maintenance time and the shutdown maintenance frequency of the sintering furnace 20 are reduced, the production cost is reduced, the productivity is improved, and the yield per shift is improved by more than 455 pieces.

In conclusion, the oil collecting and processing system 10 can improve the organic matter collecting capability of the sintering furnace 20, improve the organic matter collecting capability of the organic exhaust pipeline, solve the oil contamination problem, improve the yield of the PERC solar cell, and improve the productivity and the production safety.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent several embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. The utility model provides an album oil processing system, a serial communication port, including anti-reflux device, anti-reflux device is including anti-return pipe and anti-return cover, the outer wall of anti-return cover is narrowed by one end to the other end, the great one end of anti-return cover radial dimension forms the inlet end, the less one end of anti-return cover radial dimension forms the end of giving vent to anger, anti-return cover connect in the inner wall of anti-return pipe, the outer wall of anti-return cover with the inner wall of anti-return pipe forms the collecting vat of collecting oil and dripping.

2. An oil collecting and processing system according to claim 1, further comprising an oil collecting device, wherein the backflow preventing device and the oil collecting device are sequentially connected in sequence along the airflow direction; the oil collecting device comprises an oil collecting pipe and a condenser, one end of the oil collecting pipe is connected to the backflow preventing pipe and the other end of the backflow preventing pipe is used for being connected with a plant air draft system, and the condenser is installed in the oil collecting pipe and used for condensing oil drops in the oil collecting pipe.

3. An oil collection treatment system according to claim 2 wherein the oil collection device further comprises an oil collector connected to the condenser for collecting condensed oil droplets.

4. An oil collection treatment system according to claim 3 wherein the oil collection element is an oil collection barrel.

5. An oil collection treatment system according to claim 3, wherein the number of the oil collection pipes is plural, and the plural oil collection pipes are arranged in parallel.

6. An oil collection treatment system according to any one of claims 2 to 5, further comprising a speed increasing device, wherein the speed increasing device, the backflow prevention device and the oil collection device are sequentially connected in sequence along the airflow direction, and the speed increasing device is used for increasing the airflow speed.

7. An oil collection treatment system according to claim 6 wherein the speed increasing means is a venturi tube.

8. An oil collecting treatment system according to any one of claims 1 to 5 and 7, wherein the backflow preventing device further comprises a drainage pipeline, a collection hole is formed in the backflow preventing pipe, the collection hole is communicated with the collection tank, and the drainage pipeline is connected to the backflow preventing pipeline and communicated with the collection hole.

9. An oil collection treatment system according to any one of claims 1 to 5 and 7, wherein the backflow prevention cover is of a hollow frustum structure as a whole.

10. A sintering furnace, characterized by comprising a sintering furnace main body and the oil collection treatment system of any one of claims 1 to 9, wherein the oil collection treatment system is connected to at least one exhaust pipeline of the sintering furnace main body.

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