TW202225624A - Sintering equipment - Google Patents

Abstract

The present application provides sintering equipment. The sintering equipment comprises: a sintering section, the sintering section having a sintering space, and the sintering space being configured to sinter photovoltaic devices conveyed to pass the sintering space; a cooling section, the cooling section having a cooling space, the cooling section being located downstream of the sintering section disposed in the conveyance direction of photovoltaic devices, and the cooling section being configured to cool photovoltaic devices conveyed to pass the cooling space; a filter system, the filter system comprising a filter device, the filter device having a filter device housing and a filter element disposed in the filter device housing, the filter device housing having an air inlet and an air outlet, the air inlet and the air outlet both communicating with the cooling space of the cooling section, and the filter device being configured to filter air in the cooling space. The filter system of the sintering equipment in the present application can reduce dust particles in the sintering equipment.

Description

Sintering equipment

This case relates to a sintering equipment, especially a sintering equipment used in the manufacture of solar cell photovoltaic devices.

In the production of photovoltaic devices such as crystalline silicon solar cells and wafers, sintering equipment is required to sinter the photovoltaic devices. The sintering equipment includes at least a sintering section and a cooling section. The photovoltaic device is transported by the conveyor belt through the sintering section and the cooling section in turn, and then is transported by the conveyor belt to leave the sintering equipment. The photovoltaic device is sintered at high temperature in the sintering section to achieve a certain performance, and then the photovoltaic device enters the cooling section to cool down, and the cooling section can reduce the temperature of the photovoltaic device to a certain range.

The present application provides a sintering apparatus with a filtering system, the sintering apparatus comprising: a sintering section, the sintering section has a sintering space, the sintering section is configured to sinter a photovoltaic device conveyed through the sintering space; a cooling section, The cooling section has a cooling space, the cooling section is arranged downstream of the sintering section in the conveying direction of the photovoltaic device, the cooling section is configured to cool the photovoltaic device conveyed through the cooling space; a filter system , the filter system includes a filter device, the filter device has a filter device housing and a filter element arranged in the filter device housing, the filter device housing has a gas inlet and a gas outlet, the gas inlet and the gas The outlets are all in communication with the cooling space of the cooling section, and the filtering device is configured to filter the gas in the cooling space.

According to the aforementioned sintering equipment, the cooling section includes a heat exchange device, and the heat exchange device is arranged below the photovoltaic device to be cooled in the cooling space; the filter system includes an air duct, and the air of the air duct A duct outlet is connected to a gas inlet of the filter device, the duct inlet of the air duct is located in the cooling space and below the photovoltaic device, the air duct is configured to cool the air after the heat exchange device into the filter unit.

Like the aforementioned sintering equipment, the sintering equipment further includes an aerodynamic device, the aerodynamic device includes at least one first fan, the filter system is connected to the aerodynamic device, and the aerodynamic device is arranged on the side of the air duct. at the inlet of the air duct to guide the gas flow to the gas inlet of the filtering device.

Like the aforementioned sintering equipment, the sintering equipment further comprises a bellows, the bellows has a bellows inlet and a bellows outlet, the bellows inlet is connected to the heat exchange device, and the bellows outlet is connected to the air duct communication, the aerodynamic device is provided on the bellows, the aerodynamic device is configured to guide the air flow from the bellows inlet to the bellows outlet after passing through the heat exchange device.

As in the aforementioned sintering equipment, the heat exchange device includes a heat exchange tube through which a cooling medium flows, an air flow channel is provided in the heat exchange device, and the bellows is arranged below the heat exchange device.

As in the aforementioned sintering apparatus, the filter device further comprises at least one second fan disposed in the filter device housing, the second fan configured to provide power to direct a gas inlet from the filter device housing The incoming air flow is filtered through the filter element.

As in the aforementioned sintering equipment, the filter housing has a top wall, a bottom wall, a front wall, a rear wall, a left wall and a right wall, and the gas inlet and gas outlet are both provided on the bottom wall of the filter housing Above, the filter device housing has a filter space and an airflow output channel, the gas inlet communicates with the bottom of the filter space, and the airflow output channel connects the top of the filter space with the gas outlet, so The filter element is arranged in the filter space.

As in the aforementioned sintering equipment, the filter device is provided with a transverse partition plate and a vertical partition plate, and the vertical partition plate is located from the bottom wall of the filter device housing between the gas inlet and the gas outlet. It extends upward at the position and has a certain distance from the top wall of the filter housing. One side of the horizontal partition is connected to the vertical partition, and the other side is connected to the filter housing. The left wall is connected, and the horizontal and vertical partitions are both connected to the front and rear walls of the filter housing, so that the horizontal and vertical partitions connect the interior of the filter housing. The space is divided into filter space and airflow output channel;

Wherein at least one communication hole is formed on the transverse partition, and the airflow output channel communicates with the filter space through the communication hole.

According to the aforementioned sintering equipment, the filter element includes a first-stage filter element and a second-stage filter element, the first-stage filter element is disposed upstream in the direction of airflow, and the first-stage filter element is configured to filter the gas larger than 5 microns of dust particles, the second-stage filter element is configured to filter dust particles larger than 0.5 microns in the gas.

According to the aforementioned sintering equipment, the at least one second fan is installed at the at least one communication hole, and the at least one communication hole is arranged at the left wall of the lateral partition plate close to the filter device housing;

The airflow output channel includes a transverse channel located between the top wall of the filter device housing and the transverse partition plate, and a vertical channel located between the vertical partition plate and the right wall;

The filter device includes a first air guide plate and a second air guide plate, the first air guide plate and the second air guide plate respectively extend obliquely from the top of the filter device housing toward the left wall and the right wall , the first deflector is located above the communication hole, the second deflector is located above the vertical channel, and the first deflector is configured to guide the air flowing out of the second fan The air flow is directed towards the transverse channel, and the second baffle is configured to direct the air flow in the transverse channel toward the vertical channel.

As in the aforementioned sintering apparatus, the filter device further includes a buffer plate extending upward from the bottom wall of the filter device and inclined toward the gas inlet to at least partially block the gas entering from the gas inlet .

As in the aforementioned sintering equipment, the top of the cooling section is provided with a filter device connecting interface, and the shape of the filter device connecting interface matches the shape of the bottom wall of the filter device casing, so that when the filter device is connected to the When on the cooling section, the filter device covers the connection interface of the filter device.

In this case, a filter device is added to the cooling section of the sintering equipment, which can filter the dust particles in the cooling section and reduce the interference of the dust particles on the photovoltaic device in the cooling section.

In the sintering equipment of this case, the filter device filters part of the air in the cooling section and returns it to the cooling section again to form a relatively closed system. Most of the air circulates in the cooling section and the filter device to prevent external particles from entering the cooling section. inside the segment.

In the sintering equipment of this case, the cooled air is introduced into the filter device through the fan, and then returned to the cooling section, which strengthens the air circulation inside the cooling section, makes the air in the cooling section evenly distributed, and thus strengthens the protection of the photovoltaic device. cooling effect.

In the sintering equipment of this case, the filter device is roughly in the shape of a cube, and the airflow channel and the filter element are arranged inside the shell of the filter device, so that the filter device is an integral part, which is easy to connect with the cooling section device.

Various embodiments of the invention will be described below with reference to the accompanying drawings which form a part of this specification. It should be understood that although directional terms such as "front," "rear," "upper," "lower," "left," "right," etc. are used in the present case to describe various example structural parts and elements of the present case, However, these terms are used herein for convenience of description only, and are determined based on the example orientations shown in the drawings. Since the embodiments disclosed in this application can be arranged in different orientations, these directional terms are used for illustration only and should not be regarded as limiting.

FIG. 1 is a schematic diagram of a sintering apparatus 100 in the present case, illustrating the basic configuration of the sintering apparatus. As shown in FIG. 1 , the sintering apparatus 100 includes a sintering section 101 , a cooling section 102 and a filtering system 105 . The photovoltaic device to be processed is conveyed by the conveyor belt, and in the direction shown by the arrow 108 , passes through the sintering section 101 and the cooling section 102 in sequence to complete the sintering process. The sintering section 101 has a sintering space, and the photovoltaic device is heated to a certain temperature range in the sintering space, for example, 700° C.-900° C., so that the photovoltaic device is subjected to high-temperature sintering treatment. The sintered photovoltaic device enters the cooling section 102, and the cooling section 102 can cool the photovoltaic device to a certain range, for example, less than 60°C. The cooled photovoltaic devices are transported out of the sintering equipment by a conveyor belt. The sintering apparatus 100 also includes a front section 111 and a rear section 112, the front section 111 is arranged upstream of the sintering section 101, the rear section 112 is arranged downstream of the cooling section 102, and the front section 111 and the rear section 112 are used for accommodating the power device of the conveyor belt and other devices. The sintering apparatus 100 has a length direction L, a height direction H, and a width direction W (see FIG. 2A ).

FIG. 2A is a perspective view of the cooling section and the filtering system 105 of the sintering apparatus 100 in FIG. 1 , and FIG. 2B is a perspective view of the separation of the filtering system 105 and the cooling section in FIG. 2A , illustrating the positional relationship between the cooling section and the filtering system.

As shown in FIGS. 2A and 2B , the cooling section 102 has a cooling section casing 201 , and the cooling section casing 201 encloses a cooling space 207 . The cooling section casing 201 is roughly a box with an opening at the bottom. The cooling section casing 201 includes a front plate 231 , a rear plate 232 , an upper plate 233 , a left plate 234 and a right plate 235 . The left side of the cooling section shell 201 is connected to the sintering section 101, and the right side is connected to the rear section 112. The lower part of the cooling section 102 is provided with a bracket (not shown in the figure) and several supporting feet 260 connected to the bracket. The supporting feet 260 have certain The height is so that there is a certain distance between the lower opening and the ground, so that the lower opening can communicate with the outside world. The height of the support feet 260 is small, so that the distance between the lower opening and the ground is small, and only a small amount of gas in the cooling space 207 can be exchanged with the outside air through this distance. The left plate 234 and the right plate 235 of the cooling section housing 201 are provided with openings 261 and 262 to allow the passage of the conveyor belt and the photovoltaic devices conveyed by the conveyor belt. The opening 262 is located at the upper part of the cooling section 102 in the height direction, and is higher than the upper surface of the rear section 112 , and the conveyor belt and the photovoltaic device to be conveyed are located at the upper part of the cooling section 102 . The upper plate 233 of the cooling section housing 201 is provided with a filter device connecting interface 208 , and the filter device connecting interface 208 is substantially rectangular.

A part of the gas in the cooling section 102 can enter the filtering system 105 for filtering to remove impurities, and then return to the cooling section 102 . The filtering system 105 includes a filtering device 205 and a guiding device 215, and the guiding device 215 is used for introducing the gas in the cooling section 102 into the filtering device 205 for filtering. The filter device 205 is approximately a cube, and the bottom of the filter device 205 is connected to the upper plate 233 of the cooling section 102 . The shape of the bottom of the filter device 205 matches the filter device connection interface 208. When the filter system 105 is installed in place on the cooling section 102, the filter device 205 covers the cooling device connection interface 208, and the bottom of the filter device 205 is connected to the cooling section 102. A seal is formed between the upper plates 233 . The flow guiding device 215 is located in the cooling space 207 to introduce the gas in the lower part of the cooling space 207 into the filtering device 205 .

3A is a cross-sectional view of the cooling section and the filtering system in FIG. 2A taken along the line A-A, FIG. 3B is a perspective view of the cooling section and the filtering system 105 of the sintering apparatus 100 in FIG. 2A with the cooling section shell 201 and the internal support structure hidden, The relationship of the filter system 105 to the components inside the cooling section 102 is illustrated. As shown in FIGS. 3A and 3B , the cooling space 207 is provided with an upper cooling device 311 and a lower cooling device 312 , and a transfer channel 315 for accommodating a conveyor belt (not shown). The upper cooling device 311 and the lower cooling device 312 are respectively disposed on the upper and lower sides of the conveying channel 315. The upper cooling device 311 and the lower cooling device 312 are used to reduce the temperature in the cooling section 102 to cool the photovoltaic device conveyed by the conveyor belt. The upper cooling device 311 includes a plurality of fans 360 , which are carried by the upper fan bracket 319 and evenly arranged along the length and width directions of the sintering apparatus 100 to provide uniform airflow downward. The lower cooler 312 includes a plurality of lower cooler units 338, each of which is similar or identical in structure. A plurality of cooling device units 338 are arranged side by side along the width and length directions of the sintering apparatus 100 . Each cooling device unit 338 includes a heat exchange device 323 and a fan 370 , and the fan 370 is connected to the lower part of the heat exchange device 323 through a lower fan bracket 373 . The fan 370 directs the air to flow downward. Heat exchange device 323 includes fin-and-tube heat exchanger 339 . Each fin-and-tube heat exchanger 339 includes heat-exchange tubes and fins connected to the heat-exchange tubes, and fluid can pass through the fin-and-tube heat exchanger 339 from top to bottom. In the cooling section 102, the fans 360 and 370 are located on the upper and lower sides of the conveyor belt, and guide the air to flow from top to bottom evenly, so that the airflow near the photovoltaic devices on the conveyor belt flows from top to bottom. The airflow near the conveyor belt flows downwards, which prevents the light-weight photovoltaic devices on the conveyor belt from moving due to the influence of the side-flowing airflow and the upward-flowing airflow. In this case, the lower cooling device 312 includes a fan 370 , and the fan 370 provides airflow to enhance the gas convection inside the cooling section to improve the heat exchange effect of the fin-and-tube heat exchanger 339 . At the same time, the fan 370 also provides an aerodynamic device for the filter system 105 to guide the airflow into the filter system 105 for filtering. That is, the filtration system 105 is powered by the fan 370 of the lower cooling device 312 for the flow of gas within it.

The inlet end of the guide device 215 of the filter system 105 is connected to the bottom of the lower cooling device 312 , and the outlet end is connected to the filter device 205 . The flow guiding device 215 introduces the air flow after heat exchange by the fin-and-tube heat exchanger 339 into the filtering device 205 . The flow guide device 215 includes a plurality of flow guide device units 336, and the structure of each flow guide device unit 336 is similar or the same. Each lower cooler unit 338 is connected to a corresponding flow guide unit 336 .

FIG. 4A is a perspective view of one of the deflector units 336 and corresponding lower cooling unit 338 of FIG. 3B , FIG. 4B is an exploded view of the deflector unit 336 and the corresponding lower cooling unit 338 , FIGS. 4A and 4B illustrate the deflector Structure of plant unit 336 and corresponding lower cooling plant unit 338. Figures 4A and 4B illustrate its structure with a flow guide unit 336 and a corresponding lower cooling unit 338. As shown in Figures 4A and 4B, the lower cooling unit 338 includes a fin-tube heat exchanger 339 and a bellows 407, The fan 370 is connected to the bellows 407 . The fin-and-tube heat exchanger includes heat exchange tubes 408 and several fins 418 arranged side by side. The heat exchange tube 408 includes curved multi-section heat exchange tube sections, and the multi-section heat exchange tube sections are connected end to end to form a heat exchange tube channel. A cooling medium is circulated in the heat exchange tube channel to exchange heat with the environment. The fins 418 are connected to the outer side walls of the heat exchange tubes 408 and extend along the height direction of the sintering equipment to increase the heat exchange area. The extending direction of the fins is substantially perpendicular to the extending direction of the heat exchange tube segments. Adjacent fins are spaced apart, and adjacent heat exchange tube sections are also spaced apart, so an air flow channel 419 is formed between adjacent fins to allow gas to pass through. The bellows 407 has a bottom portion 431 and a side portion 432 extending upward from the periphery of the bottom portion 431 . The top end 435 of the side portion 432 forms an upper opening, and the upper opening forms the bellows inlet 411 . The bottom 431 is provided with a plurality of fan mounting holes, and the fan mounting holes form the bellows outlet 412 . Fan 370 is attached to bottom 431 and is axially aligned with bellows outlet 412 to direct airflow in bellows 407 out of bellows outlet 412 . The top end 435 of the side portion 432 is connected to the bottom of the fin-and-tube heat exchanger 339 so that the airflow passing through the fins can enter the bellows inlet 411 . The air guide unit 336 includes an air duct 461 and a air guide hood 462 , the air duct 461 has an air duct inlet 471 and an air duct outlet 472 , and the air guide hood 462 includes a air guide hood inlet 473 and a air guide hood outlet 474 . The draft hood outlet 474 is connected to the air duct inlet 471 , and the draft hood inlet 473 is connected to the bottom of the bellows 407 , so that the draft hood inlet 473 communicates with the bellows outlet 412 . In one embodiment of the present case, the fan 370 is contained within the draft hood 462 . In other embodiments, the fan 370 may also be housed within the bellows 407 . The shape and length of the air ducts in each air guide unit 336 are set according to the location of the lower cooling unit 338 to which it is connected. In this case, the plurality of bellows 407 form the lower fan bracket 373 . The shape design of the bellows 407 and the draft hood 462 enables most of the airflow after heat exchange by the fin-and-tube heat exchanger 339 to be collected into the filter device 105 and flow into the upper part of the cooling section 102 through the filter device 105 to further reduce The temperature of the air near the conveyor belt.

5A is a perspective view of the filter device in FIG. 2A , FIG. 5B is an exploded view of the filter device in FIG. 5A , and FIG. 5C is a cross-sectional view of the filter device in FIG. 5A along line B-B. As shown in FIG. 5A , FIG. 5B and FIG. 5C , the filtering device includes a housing 510 , a filter element 508 and a plurality of fans 509 , and the filter element 508 and the fans 509 are accommodated in the housing 510 . The housing 510 has a generally cubic box shape and includes an upper housing 544 and a lower housing 545 to facilitate the installation of components inside the filter device. The housing 510 includes a top wall 534 , a bottom wall 533 , a front wall 535 , a rear wall 536 , a left wall 531 and a right wall 532 . The bottom wall 533 is provided with a gas inlet 501 and a gas outlet 502 , wherein the gas inlets 501 include a plurality of gas inlets 501 , and each gas inlet 501 is respectively connected to a corresponding air duct outlet 472 . The gas outlet communicates with the cooling space 207 . The filter device 205 is provided with a transverse partition plate 541 and a vertical partition plate 542. The vertical partition plate 542 extends upward from the bottom wall 533 of the filter device housing 510 and is connected to the top wall 534 of the filter device housing 510. There is a certain distance between them, one side of the horizontal partition 541 is connected with the vertical partition 542, and the other side is connected with the left wall 531 of the filter device housing 510. Both the horizontal partition 541 and the vertical partition 542 are connected to the filter device. The front wall 535 and the rear wall 536 of the housing 510 are connected, so that the transverse partition plate 541 and the vertical partition plate 542 divide the inner space of the filter device housing 510 into a filter space 518 and an airflow output channel 519 . The gas inlet 501 and the gas outlet 502 are respectively located on both sides of the vertical partition 542 . The gas inlet 501 is located at the bottom of the filter space 518 and communicates with the filter space 518 , and the gas outlet 502 communicates with the airflow output channel 519 . The filter element 508 is arranged in the filter space 518. The filter element 508 extends along the width direction W and the length direction L of the sintering device, and its four side edges are respectively connected with the left wall 531, the rear wall 536, the vertical partition 542 and the front wall 535. If connected, the airflow entering the filter space 518 from the gas inlet 501 will pass through the filter element 508 and then flow out from the communication hole 565 .

The transverse partition plate 541 has a plurality of communication holes 565 , and the communication holes 565 are arranged along the direction from the front wall 535 to the rear wall 536 and are close to the left wall 531 . The communication hole 565 is located at the top of the filter space 518 . The communication hole 565 forms the gas outlet of the filter space 518 . The airflow output channel 519 communicates with the filter space 518 through the communication hole 565 . Fan 509 is mounted on transverse bulkhead 541 in axial alignment with communication hole 565 . The fan 509 guides the airflow entering the filter space 518 to flow out through the communication hole 565 after being filtered by the filter element 508 and enter the airflow output channel 519 .

The filter element 508 includes a first-stage filter element 546 and a second-stage filter element 547. The first-stage filter element 546 is closer to the gas inlet 501 than the second-stage filter element 547, that is to say, the first-stage filter element 546 is disposed upstream in the airflow direction , the airflow passes through the first-stage filter element 546 and the second-stage filter element 547 in sequence. The first-stage filter element 546 is configured to filter dust particles larger than 5 microns in the gas, and the second-stage filter element 547 is configured to filter dust particles larger than 0.5 microns in the gas.

The airflow output channel 519 includes a transverse channel 525 located between the top wall 534 of the filter device housing 510 and the transverse partition plate 541 , and a vertical channel 524 located between the vertical partition plate 542 and the right wall 532 . The communication hole 565 communicates with the horizontal channel 525 , the gas outlet 502 is located at the bottom of the vertical channel 524 , and the airflow in the airflow output channel 519 flows from the horizontal channel 525 to the vertical channel 524 .

The filter device 205 further includes a first guide plate 521 and a second guide plate 522, the first guide plate 521 and the second guide plate 522 are respectively inclined from the top of the filter device housing 510 toward the left wall 531 and the right wall 532 Extending, the first air guide plate 521 and the second air guide plate 522 respectively form an included angle of about 45° with the top wall 534 . The first air guide plate 521 is located above the communication hole 565 . The air flow out of the communication hole 565 flows along the vertical direction (ie, the direction parallel to the left wall 531 of the casing), and reaches the first guide plate 521. Due to the angle of the first guide plate, the air flows at the first guide plate 521. The flow direction is changed at the plate 521 to flow along the extending direction of the transverse channel 525 . The first deflector 521 and the communication hole 565 are both close to the left wall 531, so that the space between the left wall 531 and the top wall 534 and the first deflector 521 is small, and most of the airflow will not stay here, Rather, it flows out of the transverse channel 525 as quickly as possible. The second deflector 522 is located above the vertical channel 524 , and the airflow in the transverse channel 525 changes its flow direction at the second deflector 522 and flows to the gas outlet 502 along the extending direction of the right wall 532 . The angles and positions of the first deflector 521 and the second deflector 522 are set so that the airflow can easily flow from the filter space 518 to the gas outlet 502 , so as to reduce the energy loss caused by the irregular flow of the airflow inside the housing 510 .

The filter device 205 also includes a buffer plate 583 that extends upwardly from one side of the gas inlet 501 of the bottom wall 533 of the filter device and slopes toward the gas inlet 501 to at least partially block gas entering from the gas inlet 501 . The buffer plate 583 changes the flow direction of the airflow entering the gas inlet 501 and reduces the flow rate of the airflow, so as to avoid damage to the filter element 508 caused by the excessively fast airflow. In an embodiment of the present case, the buffer plate 583 includes two pieces, respectively extending obliquely from the middle of the bottom wall 533 toward the left wall 531 and the right wall 532 to partially block the two exhaust gas inlets 501 respectively. In other embodiments, the location and orientation of the buffer plate 583 may be determined according to the location and number of the gas inlets 501 .

Referring to FIGS. 3A and 5C , in the cooling section 102 , the fan 360 provides a downward airflow through the conveyor belt into the lower cooling device 312 . In the lower cooling device 312 , the air flow passes through the fin-and-tube heat exchanger 339 for heat exchange, reduces the temperature and enters the wind box 407 . The fan 370 installed on the bellows 407 diverts the air flow out from the bellows outlet 412 and enters the air duct 461 through the diversion cover 462 . Fan 370 provides power to enable airflow through duct 461 into flow guide 205 . The airflow enters the airflow guide device 205 from the gas inlet 501 of the airflow guide device 205 . After the airflow is filtered by the filter element 508 , most of the dust particles remain in the filter element 508 , and clean air flows out from the communication hole 565 . The fan 509 provides power for the air flow in the filter device, so that the air flow can pass through the filter element 508 smoothly. The filtered air re-enters the cooling section 102 from the gas outlet 502 through the airflow output channel 519 . During the working procedure of the sintering equipment, the filter system 105 works simultaneously, the airflow circulates between the cooling device 205 and the cooling space 207, the dust particles are intercepted by the filter element 508, and the number of dust particles in the cooling space 207 is maintained at a low level, which can improve the photovoltaic device. processing quality.

After the sintering equipment in this case works for a period of time, certain dust particles will be generated inside the equipment. For example, one of the sources of dust particles is the friction of the conveyor belt. Dust particles may have some impact on the processing of photovoltaic devices. The air flow inside the sintering section 101 is relatively small, and these dust particles can be deposited at the bottom of the sintering section 101 by gravity, and the disturbance to the photovoltaic device is relatively small. In the cooling section 102, a cooling device including a fan is arranged. Under the action of the fan, the air flows inside the cooling section 102, and the dust particles are relatively difficult to deposit, but are dispersed in the cooling space 207 of the entire cooling section 102. This may have an impact on photovoltaic installations. Therefore, in this case, a filter device is added to the cooling section 102 of the sintering equipment, which can filter the dust particles in the cooling section 102 and reduce the interference of the dust particles on the photovoltaic devices in the cooling section 102 . The filter element 508 in this case can be cleaned and replaced regularly to maintain a good filtering effect.

In this case, the filter device 205 filters part of the air in the cooling section 102 and returns it to the cooling section 102 again to form a relatively closed system without directly communicating the outlet of the filter device 205 with the environment. If the outlet 502 of the filter device 205 is directly communicated with the environment, it is possible for particles or impurities in the environment to enter the interior of the sintering device through the filter device 205 . In this case, most of the air circulates in the cooling section 102 and the filtering system 105 , preventing foreign particles from entering the cooling section 102 .

In the cooling section of common sintering equipment, the heat exchanger is arranged below the photovoltaic device, and in order to prevent the photovoltaic device from moving due to the influence of the upward or lateral airflow, the airflow in the cooling section is usually set along the top to the bottom. flow in the downward direction. Then, a large amount of air cooled by the heat exchanger is deposited in the lower part of the cooling section, and the photovoltaic device is located in the upper part of the cooling section, and the air cooled by the heat exchanger cannot effectively cool the photovoltaic device. In this case, the cooled air is introduced into the filter system 105 through the fan, and then returned to the cooling section 102, which strengthens the air circulation inside the cooling section 102, so that the air in the cooling section 102 is evenly distributed, thereby enhancing the protection of the photovoltaic device. cooling effect.

In this case, the filter device 205 is roughly in the shape of a cube, and the airflow output channel 519 and the filter element 508 are both disposed inside the housing 510 of the filter device 205, so that the filter device 205 is an integral part, which is easy to be assembled with the cooling section 102 . In the filter device 205, the gas inlet 501 and the gas outlet 502 are both arranged at the bottom of the filter device 205. The air flow direction is guided by the guide plates 521 and 522 inside the filter device 205, so that the gas flow can easily flow from the gas inlet 501 to the gas outlet 502.

Although only some of the features of the present invention have been illustrated and described herein, many modifications and changes will occur to those skilled in the art. It should therefore be understood that the appended claims are intended to cover all such modifications and variations as fall within the essential spirit of the present case.

100: Sintering equipment 101: Sintering section 102: Cooling section 105: Filtration system 108: Arrow 111: The first paragraph 112: Backstage 201: Cooling section shell 205: Filtration device 207: Cooling Space 208: Filter device with interface 215: Diversion device 231: Front panel 232: rear panel 233: Upper Board 234: Left Plate 235: Right Plate 260: Support feet 261: Opening 262: Opening 311: Upper cooling unit 312: Lower cooling device 315: Transmission channel 319: Upper fan bracket 323: Heat Exchanger 336: Diversion device unit 338: Lower cooling unit unit 339: Finned Tube Heat Exchanger 360: Fan 370: Fan 373: Lower fan bracket 407: Bellows 408: heat exchange tube 411: Bellows inlet 412: bellows outlet 418: Fins 419: Airflow channel 431: Bottom 432: Side 435: Top 461: Duct 462: Drainage hood 471: Duct inlet 472: Duct outlet 473: Drainage hood inlet 474: Drainage hood outlet 501: Gas inlet 502: Gas outlet 508: Filters 509: Fan 510: Shell 517: Filter Space 518: Filter Space 519: Airflow output channel 521: First deflector 522: Second deflector 524: Vertical channel 525: Lateral Channel 531: Left Wall 532: Right Wall 533: Bottom Wall 534: Top Wall 535: Front Wall 536: Back Wall 541: Transverse partition 542: Vertical partition 544: Upper shell 545: Lower Housing 546: First-stage filter element 547: Second stage filter element 565: Connecting hole 583: Buffer plate A-A: Line B-B: Line H: height direction L: length direction W: width direction

FIG. 1 is a schematic diagram of a sintering device 100 in this case;

FIG. 2A is a perspective view of the cooling section and the filtering system 105 of the sintering apparatus 100 in FIG. 1;

Figure 2B is a perspective view of the filtration system 105 in Figure 2A separated from the cooling section;

3A is a cross-sectional view of the cooling section and filter system in FIG. 2A taken along line A-A;

3B is a perspective view of the cooling section and the filtering system 105 of the sintering apparatus 100 in FIG. 2A with the cooling section shell 201 and the internal support structure hidden;

FIG. 4A is a perspective view of a flow guide unit 336 and a corresponding lower cooling unit unit 338 in FIG. 3B;

FIG. 4B is an exploded view of the deflector unit 336 and the corresponding lower cooler unit 338;

Figure 5A is a perspective view of the filter device in Figure 2A;

Figure 5B is an exploded view of the filtering device in Figure 5A;

Fig. 5C is a cross-sectional view of the filter device of Fig. 5A taken along line B-B.

Domestic storage information (please note in the order of storage institution, date and number) none Foreign deposit information (please note in the order of deposit country, institution, date and number) none

102: Cooling section

105: Filtration system

205: Filtration device

207: Cooling Space

208: Filter device with interface

215: Diversion device

262: Opening

Claims (12)

A sintering equipment is characterized by comprising: a sintering section (101) having a sintering space, the sintering section (101) being configured to sinter photovoltaic devices conveyed through the sintering space; a cooling section (102) having a cooling space (207), the cooling section (102) being arranged downstream of the sintering section (101) in the conveying direction of the photovoltaic device, the cooling section (102) configured to cool photovoltaic devices conveyed through said cooling space (207); A filter system (105), the filter system (105) comprising a filter device (205), the filter device (205) having a filter device housing (510) and a filter element arranged in the filter device housing (510) (508), the filter device housing (510) has a gas inlet (501) and a gas outlet (502), and both the gas inlet (501) and the gas outlet (502) are connected to all the cooling sections (102). The cooling space (207) is in communication, and the filtering device (105) is configured to filter the gas in the cooling space (207). The sintering equipment of claim 1, wherein: The cooling section (102) comprises a heat exchange device (323), the heat exchange device (323) is arranged below the photovoltaic device to be cooled in the cooling space (207); The filtration system (105) comprises an air duct (461), an air duct outlet (472) of the air duct (461) is connected to a gas inlet (501) of the filtering device (205), and the air duct (461) ) of the air duct inlet (471) located in the cooling space (207) and below the photovoltaic device, the air duct (461) is configured to send the air cooled by the heat exchange device (323) into the cooling space (207) The filtering device (205) is described. The sintering equipment of claim 2, wherein: The sintering equipment further includes an aerodynamic device, the aerodynamic device includes at least one first fan (370), the filter system (105) is connected with the aerodynamic device, and the aerodynamic device is arranged on the air duct (370). 461) at the air duct inlet (471) to guide the gas flow to the gas inlet (501) of the filtering device (205). The sintering equipment of claim 3, wherein: The sintering equipment further comprises a bellows (407), the bellows (407) has a bellows inlet (411) and a bellows outlet (412), the bellows inlet (411) and the heat exchange device (323) connected, the bellows outlet (412) communicates with the air duct (461), and the aerodynamic device is connected to the bellows (407), the aerodynamic device is configured to guide airflow through the heat exchange device Flow from the bellows inlet (411) to the bellows outlet (412). The sintering equipment of claim 4, wherein: The heat exchange device (323) includes a heat exchange tube (408) in which a cooling medium circulates, the heat exchange device (323) has an air flow channel (419), and the bellows (407) arranged below the heat exchange device (323). The sintering equipment of claim 1, wherein: The filter device (205) further comprises at least one second fan (509) disposed in the filter device housing (510), the second fan (509) being configured to provide power to direct flow from the filter The gas flow entering the gas inlet (501) of the device housing (510) is filtered through the filter (508). The sintering equipment of claim 6, wherein: The filter device housing (510) has a top wall (534), a bottom wall (533), a front wall (535), a rear wall (536), a left wall (531) and a right wall (532), the gas inlet (501) and the gas outlet (502) are both arranged on the bottom wall (533) of the filter device housing (510), and the filter device housing (510) has a filter space (517) and an airflow output channel ( 519), the gas inlet (501) communicates with the bottom of the filter space (517), and the airflow output channel (519) communicates the top of the filter space (517) with the gas outlet (502), The filter element (508) is arranged in the filter space (517). The sintering equipment of claim 7, wherein: The filter device (205) is provided with a transverse partition plate (541) and a vertical partition plate (542), and the vertical partition plate (542) extends from the bottom wall (533) of the filter device housing (510). The position between the gas inlet (501) and the gas outlet (502) extends upward, and has a certain distance from the top wall (534) of the filter housing (510). One side of the plate (541) is connected with the vertical partition plate (542), and the other side is connected with the left wall (531) of the filter device housing (510). Both the vertical partitions (542) are connected with the front wall (535) and the rear wall (536) of the filter device housing (510), so that the transverse partitions (541) and the vertical partitions (542) The inner space of the filter device housing (510) is divided into a filter space (518) and an airflow output channel (519); The transverse partition plate (541) has at least one communication hole (565), and the airflow output channel (519) communicates with the filter space (518) through the communication hole (565). The sintering equipment of claim 7, wherein: The filter element (508) includes a first-stage filter element (546) and a second-stage filter element (547), the first-stage filter element (546) is arranged upstream in the airflow direction, and the first-stage filter element (546) The second-stage filter element (547) is configured to filter dust particles larger than 5 microns in the gas, and the second-stage filter element (547) is configured to filter dust particles larger than 0.5 microns in the gas. The sintering equipment of claim 8, wherein: The at least one second fan (509) is installed at the at least one communication hole (565), and the at least one communication hole (565) is arranged on the transverse partition plate (541) close to the filter device housing (565). 510) at the left wall (531); The airflow output channel (519) includes a transverse channel (525) located between the top wall (534) of the filter device housing (510) and the transverse partition plate (541), and a transverse channel (525) located in the vertical partition vertical passage (524) between plate (542) and said right wall (532); The filter device includes a first air guide plate (521) and a second air guide plate (522), the first air guide plate (521) and the second air guide plate (522) are respectively separated from the filter device housing The top of (510) extends obliquely toward the left wall (531) and the right wall (532), the first deflector (521) is located above the communication hole (565), and the second deflector (522) is located above the vertical channel (524), and the first deflector (521) is configured to guide the air flow from the second fan (509) to the lateral channel (525), so The second baffle plate (522) is configured to guide the airflow in the transverse channel (525) to the vertical channel (524). The sintering equipment of claim 1, wherein: The filter device (205) further comprises a buffer plate (583) extending upwardly from the bottom wall (533) of the filter device and inclined towards the gas inlet (501) to at least partially Gas entering from the gas inlet (501) is blocked. The sintering equipment of claim 1, wherein: The top of the cooling section (102) is provided with a filter device connection interface (208), and the shape of the filter device connection interface (208) matches the shape of the bottom wall (533) of the filter device housing (510). , so that when the filter device (205) is connected to the cooling section (102), the filter device (205) covers the filter device connection interface (208).

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