Drying equipment for photovoltaic cell

Abstract

The utility model relates to the field of photovoltaic cell manufacturing equipment, in particular to drying equipment for photovoltaic cells. Comprising a furnace body, a heating chamber used for containing a photovoltaic cell is formed in the furnace body, one side, corresponding to the heating chamber, of the furnace body is connected with an air inlet device, and the other side, corresponding to the heating chamber, of the furnace body is provided with an air exhaust device; the air inlet device is connected with or internally provided with a heating device, so that the air inlet device, the heating chamber and the air exhaust device form a hot air flow circulation channel; the air inlet device comprises an air inlet pipeline, a fluid director and an air uniformizing mechanism which are sequentially arranged from outside to inside relative to the furnace body; the fluid director is of a spiral structure, so that hot airflow entering through the air inlet pipeline moves in the mode of being attached to the surface of the fluid director, and spiral airflow is formed.

Description

TECHNICAL FIELD

[0001] The utility model relates to photovoltaic cell manufacturing equipment field especially relates to a kind of drying equipment for photovoltaic cell. BACKGROUND

[0002] The curing furnace is often used for the curing of the glue or paste on the surface of the solar cell in the solar cell process, that is, the hot air (heated air flow) generated by the curing furnace is in continuous contact with the solar cell, so that the glue or paste on the surface of the solar cell is heated to a predetermined temperature, thereby curing the glue or paste for the next processing. The accuracy and uniformity of the heating of the glue or paste on the surface of the solar cell determine the curing quality. Therefore, the stability and uniformity of the temperature of the hot air in the curing furnace are the key control indicators.

[0003] The hot air generated by the curing furnace in the prior art does not contact the solar cell uniformly, which further causes uneven heating of the solar cell and affects the curing effect of the glue or paste. SUMMARY

[0004] The utility model aims at providing a kind of drying equipment for photovoltaic cell, to solve the problem that the hot air generated by curing furnace in prior art does not contact the solar cell uniformly.

[0005] The technical scheme of the utility model is: a kind of drying equipment for photovoltaic cell, including furnace body, the heating cavity for accommodating photovoltaic cell is formed in the furnace body, the side of the furnace body corresponding heating cavity is connected with air inlet device, and the other side corresponding heating cavity is provided with air outlet device;The air inlet device is connected or built-in heating device, so that the air inlet device, the heating cavity, the air outlet device form the circulation channel of hot air flow;

[0006] The air inlet device includes air inlet pipeline, flow guide and air uniform mechanism sequentially arranged from outside to inside relative to furnace body;The flow guide is set as spiral structure, so that the hot air flow entering through air inlet pipeline moves along the surface of flow guide, and spiral air flow is formed.

[0007] Preferably, the flow guide is configured as a first flow guide, and the first flow guide is set as a single spiral structure.

[0008] Preferably, the flow guide is configured as a second flow guide, and the second flow guide is set as a multi-spiral structure;The multi-spiral structure is composed of a plurality of coaxially arranged single spiral structures.

[0009] Preferably, the air uniform mechanism includes a first air uniform plate, and a plurality of first air uniform holes are formed in the first air uniform plate.

[0010] Preferably, the air uniformizing mechanism comprises a second air uniformizing plate, which is arranged on the side of the first air uniformizing plate close to the furnace body, and a plurality of second air uniformizing holes are formed in the second air uniformizing plate, and the total cross-sectional area of the second air uniformizing holes is not greater than the total cross-sectional area of the first air uniformizing holes.

[0011] Preferably, the projection of the second air uniformizing holes on the first air uniformizing holes has a non-overlapping part with the first air uniformizing holes.

[0012] Preferably, the air uniformizing mechanism comprises a partition plate, which is arranged in a frame structure and is formed with a plurality of partition grooves, and one end of the partition grooves is communicated with the second air uniformizing holes.

[0013] Preferably, the end of the partition plate away from the second air uniformizing holes in the air inlet device is connected with a third air uniformizing plate, a plurality of third air uniformizing holes are formed in the third air uniformizing plate, and part of the third air uniformizing holes are communicated with part of the second air uniformizing holes through the partition grooves.

[0014] Preferably, the air uniformizing mechanism is also arranged in the air outlet device.

[0015] Preferably, the end of the partition plate away from the second air uniformizing holes in the air outlet device is connected with an air outlet pipeline, and the air outlet pipeline is provided with a plurality of air outlet inlets corresponding to the partition grooves.

[0016] Preferably, part or all of the air outlet inlets of the air outlet pipeline are communicated with a common air outlet outlet.

[0017] Preferably, in the air uniformizing mechanism arranged in the air outlet device, the partition plate is arranged on both sides of the first air uniformizing plate, so that part of the first air uniformizing holes and part of the second air uniformizing holes are communicated through the partition grooves.

[0018] Compared with the prior art, the application has the advantages that: by arranging the flow guide and the air uniformizing mechanism, the hot air flow about to enter the furnace body forms a spiral air flow, that is, the first uniformization, and then the air uniformizing mechanism performs second, third and fourth uniformization in sequence, so that the hot air flow uniformly enters the furnace body, and the battery pieces in the furnace body can be uniformly heated, thereby obtaining better glue or slurry solidification effect. BRIEF DESCRIPTION OF DRAWINGS

[0019] The application will be further described below in combination with the drawings and embodiments:

[0020] Figure 1 A structure diagram of the drying equipment for photovoltaic cells is shown in the application;

[0021] Figure 2 An exploded view of the air inlet device from the first perspective is shown in the application;

[0022] Figure 3The explosion map of the air inlet device from the second visual angle of the utility model;

[0023] Figure 4 The first flow guide structure diagram of the utility model;

[0024] Figure 5 The second flow guide structure diagram of the utility model;

[0025] Figure 6 The explosion map of the air outlet device from the first visual angle of the utility model;

[0026] Figure 7 The explosion map of the air outlet device from the second visual angle of the utility model;

[0027] Wherein: 1, furnace body, 2, air inlet device, 21, air inlet pipeline, 22, flow guide, 22a, first flow guide, 22b, second flow guide, 3, air outlet device, 31, air outlet pipeline, 32, air inlet, 33, air outlet, 4, air uniform mechanism, 41, first air uniform plate, 411, first air uniform hole, 42, second air uniform plate, 421, second air uniform hole, 43, partition plate, 431, partition groove, 5, third air uniform plate, 51, third air uniform hole, 6, photovoltaic cell. DETAILED DESCRIPTION

[0028] The content of the utility model will be further explained in detail in combination with specific embodiments:

[0029] As Figure 1 shown, a kind of drying equipment for photovoltaic cell, including furnace body 1, the inside of furnace body 1 is formed with the heating cavity for accommodating photovoltaic cell 6, and air inlet device 2 is provided with on the outside of furnace body 1 corresponding heating cavity one side, and air outlet device 3 is provided with corresponding heating cavity other side. Among them, air inlet device 2 is connected with the heating device formed by air blower and heater, wherein heater can be placed in the outside of drying equipment, also can be built-in in air inlet device 2, heating device can generate hot air flow, and air inlet device 2, heating cavity air outlet device 3 are sequentially communicated, form the circulation channel of hot air flow;To carry out heating drying work for photovoltaic cell 6 in furnace body 1.

[0030] Combination Figures 1-3 As shown, air inlet device 2 includes air inlet pipeline 21, flow guide 22 and air uniform mechanism 4 by being set from outside to inside relative to furnace body 1. Among them, flow guide 22 is set to spiral structure, so that the hot air flow entering through air inlet pipeline 21 is adhered to the surface movement of flow guide 22, forms spiral hot air flow. Compared with the hot air flow that air flow is directly blown into air uniform mechanism 4 through air inlet pipeline 21, spiral air flow formed by flow guide 22 can make hot air flow enter air uniform mechanism 4 with more uniform state, i.e. hot air flow is uniformly for the first time by flow guide 22.

[0031] In the present embodiment, the flow guide 22 is configured as a first flow guide 22a as shown in Figure 4 which is arranged in a single helix structure, based on which the heat can be transferred more evenly in each part of the space, avoiding the phenomenon of local overheating or overcooling. In other embodiments of the present application, the flow guide 22 can also be configured as a second flow guide 22b as shown in Figure 5 which is arranged in a double helix structure, and the double helix structure is composed of two coaxially arranged single helix structures. Further, in still other embodiments, the second flow guide 22b can also be arranged in a multi-helix structure of other numbers of helixes, i.e., composed of a plurality of coaxially arranged single helix structures.

[0032] As shown in Figure 2 and Figure 3 , the air uniformizing mechanism 4 includes a first air uniformizing plate 41, a second air uniformizing plate 42, and a partition plate 43. Among them, the first air uniformizing plate 41 is provided with a plurality of first air uniformizing holes 411. The second air uniformizing plate 42 is arranged on the side of the first air uniformizing plate 41 close to the furnace body 1, and the end face is provided with a plurality of second air uniformizing holes 421, and the total cross-sectional area of the second air uniformizing holes 421 is not greater than the total cross-sectional area of the first air uniformizing holes 411.

[0033] In an embodiment, each second air uniformizing hole 421 has a size not greater than that of the first air uniformizing hole 411, and the second air uniformizing hole 421 is arranged staggered with the first air uniformizing hole 411, i.e., there is a non-overlapping part between the projection of the first air uniformizing hole 411 on the second air uniformizing hole 421 and the first air uniformizing hole 411. In other embodiments, the first air uniformizing hole 411 and the second air uniformizing hole 421 have the same size, but the number of the second air uniformizing holes 421 is not more than the number of the first air uniformizing holes 411; in this way, after the hot air flow is dispersed by the plurality of first air uniformizing holes 411 and second air uniformizing holes 421 in turn, it enters the partition plate 43 at a more uniform flow rate. At this time, the hot air flow is uniformly dispersed for the second and third times by the first air uniformizing holes 411 and the second air uniformizing holes 421, respectively.

[0034] A third air uniformizing plate 5 is connected to the side of the partition plate 43 away from the second air uniformizing plate 42, and the third air uniformizing plate 5 is provided with third air uniformizing holes 51. In the present embodiment, the third air uniformizing holes 51 are configured as slot holes, and the third air uniformizing holes 51 are arranged horizontally on the third air uniformizing plate 5. Of course, in other embodiments, the third air uniformizing holes 51 can also be configured in other shapes, including but not limited to waist-shaped holes, round holes, square holes, triangular holes, etc.

[0035] The partition plate 43 is provided as a frame structure and is formed with a plurality of rectangular partition grooves 431, one end of the partition groove 431 being communicated with the second uniform air hole 421 and the other end being communicated with the third uniform air hole 51. The hot air flow entering the second uniform air plate 42 is separated into a plurality of beams by the partition groove 431 and is subjected to a fourth uniform air by the plurality of third uniform air holes 51 to form a uniform strip-shaped hot air flow which is in contact with the photovoltaic cell 6 in the furnace body 1. Of course, in other embodiments, the shape of the partition groove 431 can be a polygonal structure such as a rhombus, a hexagon, an octagon, a dodecagon, etc. or a circular or elliptical structure or a combination of the above structures.

[0036] Of course, in other embodiments, other numbers of uniform air plates can be provided in the uniform air mechanism 4, and holes of any shape can be provided in the uniform air plates.

[0037] As shown in Figs. 1 and 2, the air inlet device 2 is provided with a plurality of air inlet pipes 21, and the air outlet device 3 is provided with a plurality of air outlet pipes 31. Figure 6 and Figure 7 As shown in Figs. 1 and 2, the air inlet device 2 is provided with a plurality of air inlet pipes 21, and the air outlet device 3 is provided with a plurality of air outlet pipes 31.

[0038] In addition, the six air inlet openings 32 of the air outlet pipe 31 are connected two by two to form three air outlet openings 33 to concentrate and output the air flow. In addition, a jet pipe or an air blower is provided at each air outlet opening 33 of the air outlet pipe 31. The jet pipe is connected to compressed gas and is provided with a gas valve to control the jet size, thereby adjusting the flow rate and flow volume of the hot air flow in the furnace body 1 according to the Bernoulli principle; the air blower adjusts the flow rate and flow volume by adjusting the size of the current or voltage.

[0039] Based on the above, in the present application, the air inlet device 2 and the air outlet device 3 are provided with the uniform air mechanism 4, and the purpose of the uniform air mechanism 4 is to make the air flow more uniform, and the number of uniform air plates and partition grooves 431 for realizing uniform air flow can be determined according to actual needs.

[0040] The above examples are only for illustrating the technical concept and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, and cannot limit the protection scope of the present application. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or basic characteristics of the present application, therefore, from any point of view, the examples should be regarded as exemplary and non-limiting, the scope of the present application is defined by the appended claims rather than the above description, therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application.

Claims

1. A drying apparatus for photovoltaic cells, characterized by, The application relates to a heating device for a photovoltaic cell, which comprises a furnace body (1) internally forming a heating cavity for accommodating a photovoltaic cell (6), an air inlet device (2) connected to one side of the furnace body (1) corresponding to the heating cavity, and an air outlet device (3) arranged on the other side of the furnace body (1) corresponding to the heating cavity; the air inlet device (2) is connected with or internally provided with a heating device, so that the air inlet device (2), the heating cavity and the air outlet device (3) form a heat flow circulation channel. The air inlet device (2) comprises, from outside to inside of the furnace body (1) in sequence, an air inlet pipeline (21), a flow guide device (22) and an air uniformizing mechanism (4); the flow guide device (22) is arranged in a spiral structure, so that the hot air flow entering through the air inlet pipeline (21) moves along the surface of the flow guide device (22) to form a spiral air flow.

2. A drying apparatus for photovoltaic cells as claimed in claim 1, wherein, The flow guide device (22) is arranged in a first flow guide device (22a) in a single spiral structure.

3. The drying apparatus for a photovoltaic cell according to claim 1, wherein The flow guide device (22) is arranged in a second flow guide device (22b) in a multi-spiral structure; the multi-spiral structure is formed by a plurality of single spiral structures arranged coaxially.

4. A drying apparatus for a photovoltaic cell according to claim 2 or 3, wherein The air uniformizing mechanism (4) comprises a first air uniformizing plate (41) provided with a plurality of first air uniformizing holes (411).

5. A drying apparatus for photovoltaic cells as claimed in claim 4, wherein, The air uniformizing mechanism (4) comprises a second air uniformizing plate (42) arranged on the side of the first air uniformizing plate (41) close to the furnace body (1), and the second air uniformizing plate (42) is provided with a plurality of second air uniformizing holes (421), and the total cross-sectional area of the second air uniformizing holes (421) is not greater than that of the first air uniformizing holes (411).

6. A drying apparatus for photovoltaic cells as claimed in claim 5, wherein, The projection of the second air uniformizing holes (421) on the first air uniformizing holes (411) has a non-overlapping part with the first air uniformizing holes (411).

7. A drying apparatus for photovoltaic cells as claimed in claim 6, wherein, The air uniformizing mechanism (4) comprises a partition plate (43) arranged in a frame structure and formed with a plurality of partition grooves (431), and one end of the partition grooves (431) is communicated with the second air uniformizing holes (421).

8. A drying apparatus for photovoltaic cells as claimed in claim 7, wherein, The end of the partition plate (43) away from the second air uniformizing holes (421) formed in the air inlet device (2) is connected with a third air uniformizing plate (5), the third air uniformizing plate (5) is provided with third air uniformizing holes (51), and part of the third air uniformizing holes (51) are communicated with part of the second air uniformizing holes (421) through the partition grooves (431).

9. The drying apparatus for a photovoltaic cell according to claim 7, wherein The air uniformizing mechanism (4) is also arranged in the air outlet device (3).

10. The drying apparatus for a photovoltaic cell according to claim 9, wherein The end of the partition plate (43) away from the second air uniformizing holes (421) formed in the air outlet device (3) is connected with an air outlet pipeline (31), and the air outlet pipeline (31) is provided with a plurality of air outlet inlets (32) corresponding to the partition grooves (431).

11. A drying apparatus for photovoltaic cells as claimed in claim 10, wherein, Part or all of the air outlet inlets (32) of the air outlet pipeline (31) are communicated with a common air outlet (33).

12. The drying apparatus for a photovoltaic cell according to claim 9, wherein In the air uniformizing mechanism (4) arranged in the air outlet device (3), the partition plate (43) is arranged on both sides of the first air uniformizing plate (41), so that part of the first air uniformizing holes (411) and part of the second air uniformizing holes (421) are communicated through the partition grooves (431).

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