Multi-outlet air heating box

Abstract

The utility model discloses a multi-outlet air heating box which comprises a main cavity. A horizontal partition plate I and a horizontal partition plate II which are arranged up and down are horizontally arranged in the main cavity; at least one air uniformizing plate is vertically arranged in the lower-layer air distribution cavity, and air uniformizing holes are uniformly formed in the air uniformizing plate; the side wall of the lower-layer air distribution cavity is provided with an air inlet and an air distribution assembly corresponding to the air inlet. A respective heating module is arranged in the middle-layer heating cavity; a plurality of air outlets are formed in the side wall of the upper-layer air outlet cavity side by side. After positive air pressure enters the heating box through the air inlet, hot air flow circulation can be uniformly and stably formed in the heating box through multi-step air distribution, and the air quantity and heat loss from the air inlet to the air outlet are low; and uniform inlet air can quickly and timely take away heat on the heating pipe, so that the risk caused by heat accumulation is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaics, in particular to wet process equipment for photovoltaic cells, and specifically is a multi-outlet air heating box for drying silicon slices. Background Art

[0002] In the manufacturing process of solar cells, the silicon wafers have been processed through multiple processes such as slicing, grinding, chamfering, and polishing. Various impurities have been adsorbed on the surface of the silicon wafers. Before diffusion, they need to be cleaned to eliminate various pollutants and to make a velvet structure (velveting) that can reduce the reflection of sunlight on the surface. The cleanliness of the cleaning directly affects the yield and reliability of the solar cell. No matter which process the silicon wafers are cleaned in, there is a step of drying the product. Therefore, a heating box is needed to supply hot air.

[0003] Currently, the heating boxes on the market are all made of metal. The heating wires are evenly arranged in the heating box. The heat radiation of the heating wires, coupled with the positive wind blown by the external fan, heats the air and takes away the heat of the heating wires, achieving the purpose of continuously blowing out hot air, while ensuring that the heating wires will not form heat accumulation. However, the above existing structure has the following shortcomings: the uniformity of the wind field flow inside the heating chamber is insufficient; the hot air temperature at the air outlet of the heating box is not uniform. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the existing defects and provide a multi-outlet air heating box, comprising a main cavity;

[0005] A horizontal partition plate 1 and a horizontal partition plate 2 arranged vertically are horizontally arranged in the main cavity to divide the main cavity into a lower air distribution cavity, a middle heating cavity and an upper air outlet cavity which are arranged sequentially from bottom to top;

[0006] At least one wind uniformity plate is vertically arranged in the lower wind division cavity to divide the lower wind division cavity into at least two wind guide cavities arranged on the left and right; wind uniformity holes are evenly opened on the wind uniformity plate;

[0007] The side wall of the lower air distribution cavity is provided with an air inlet and an air distribution component corresponding to the air inlet, so as to cooperate with the air uniformity hole to uniformly guide the incoming air into the plurality of air guide cavities;

[0008] The middle layer heating cavity is provided with heating modules corresponding to different wind guide cavities respectively, so as to heat the positive wind introduced from the wind guide cavity and introduce it into the upper layer wind outlet cavity;

[0009] The side wall of the upper air outlet cavity is provided with a plurality of air outlets in parallel, so as to evenly guide the introduced hot air to the heating station.

[0010] Wherein: the air distribution component includes two air distribution plates symmetrically arranged up and down, and a wind shield; the distance between the two air distribution plates corresponding to one end of the air inlet is smaller than the distance away from the end of the air inlet, and the two ends of the wind shield are respectively connected to the end of the two air distribution plates away from the air inlet, so that air distribution ports are formed on both sides for dividing the straight wind coming in from the air inlet from the air distribution ports on both sides.

[0011] Further: it also includes a temperature sensor corresponding to the upper air outlet cavity.

[0012] Wherein: the heating module includes a primary heating component located at the lower layer and close to the outlet of the air guide cavity, and a secondary heating component located at the upper layer and close to the outlet of the middle layer heating cavity.

[0013] Among them: the first-level heating component and the second-level heating component both include a mounting plate that is detachably mounted on the inner wall of the middle-layer heating chamber by means of locking screws, mounting blocks arranged in parallel on the lower side of the mounting plate along the depth direction of the middle-layer heating chamber, a slot provided on the side of the mounting block, and a heating tube arranged along the depth direction of the middle-layer heating chamber and clamped in the slot.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. After the positive wind pressure of the fan blows into the heating box through the air inlet, it can form a hot air flow cycle evenly and stably inside the heating box through multi-step air distribution. After reasonable air distribution, the air volume and heat loss from the air inlet to the air outlet are low;

[0016] 2. Uniform air intake can quickly and timely remove the heat from the heating tube, reducing the risk of heat accumulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the heating module structure of the utility model;

[0019] Figure 3 It is a side sectional structural schematic diagram of the utility model.

[0020] In the figure: 10. Main cavity; 11. Horizontal partition 1; 12. Horizontal partition 2; 13. Wind uniformity plate; 131. Wind uniformity hole; 14. Air inlet; 15. Air distribution component; 16. First-stage heating component; 17. Second-stage heating component; 18. Air outlet; 19. Temperature sensor; 20. Mounting plate; 21. Locking screw; 22. Mounting block; 221. Card slot; 23. Heating tube. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0022] Embodiment 1:

[0023] See also Figure 1-3 The present embodiment 1 provides a multi-outlet air heating box, comprising a main cavity 10; a horizontal partition 11 and a horizontal partition 2 12 arranged vertically in the main cavity 10 are horizontally arranged in the upper and lower layers to divide the main cavity 10 into a lower layer air distribution cavity, a middle layer heating cavity and an upper layer air outlet cavity arranged in sequence from bottom to top; at least one air uniformity plate 13 is vertically arranged in the lower layer air distribution cavity to divide the lower layer air distribution cavity into at least two air guide cavities arranged on the left and right; air uniformity holes 131 are evenly opened on the air uniformity plate 13; the side of the lower layer air distribution cavity The wall is provided with an air inlet 14 and an air distribution component 15 corresponding to the air inlet 14, so as to cooperate with the uniform air hole 131 to evenly guide the incoming air into multiple air guide cavities; the middle heating cavity is provided with heating modules corresponding to different air guide cavities, so as to heat the positive air introduced from the air guide cavity and introduce it into the upper air outlet cavity; the side wall of the upper air outlet cavity is provided with multiple air outlets 18 in parallel, so as to evenly guide the introduced hot air to the heating station; it also includes a temperature sensor 19 corresponding to the upper air outlet cavity.

[0024] Among them: the air distribution component 15 includes two air distribution plates symmetrically arranged in the upper and lower parts, and a wind shield; the distance between the two air distribution plates corresponding to one end of the air inlet 14 is smaller than the distance at the end away from the air inlet 14, and the two ends of the wind shield are respectively connected to the end of the two air distribution plates away from the air inlet 14, so that air distribution ports are formed on both sides for dividing the straight wind coming in from the air inlet 14 from the air distribution ports on both sides.

[0025] Wherein: the heating module includes a primary heating component 16 located at the lower layer and close to the outlet of the air guide cavity, and a secondary heating component 17 located at the upper layer and close to the outlet of the middle layer heating cavity.

[0026] When the present embodiment 1 is working, as shown by the arrow in the figure, the positive wind pressure provided by the external fan is evenly distributed in the three air guide cavities separated by the air uniforming plate 13 after being divided by the air distribution component 15 and the air uniforming plate 13. The first step of air distribution is completed reasonably and with low consumption.

[0027] In the next step, the uniform wind fields in the three air guide cavities pass through the evenly spaced holes on the horizontal partition 11, take away the heat radiation of the first-level heating component 16, and form the first hot air field; then they pass through and take away the heat radiation of the second-level heating component 17 in turn, forming a stable hot air demand, and finally are exported through multiple evenly arranged air outlets 18, so as to achieve the purpose of consistent and stable hot air volume and heat of each air outlet 18, and provide a stable and uniform hot air source for the next step.

[0028] Embodiment 2:

[0029] Based on Example 1, in this Example 2, the first-level heating component 16 and the second-level heating component 17 both include a mounting plate 20 that is detachably mounted on the inner wall of the middle-layer heating chamber by a locking screw 21, a mounting block 22 that is arranged in parallel on the lower side of the mounting plate 20 along the depth direction of the middle-layer heating chamber, a slot 221 opened on the side of the mounting block 22, and a heating tube 23 that is arranged along the depth direction of the middle-layer heating chamber and is clamped in the slot 221.

[0030] Taking into account the need to replace the heating tube 23 in extreme cases, this embodiment 2 adopts a mode in which the heating tube 23 is fixed by the entire top mounting plate 20 and the mounting block 22, and the purpose of easily replacing the damaged heating tube 23 is achieved through the detachable locking screw 21.

[0031] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A multi-outlet air heating box, characterized in that: It comprises a main cavity (10); A first horizontal partition (11) and a second horizontal partition (12) are arranged vertically in the main cavity (10) to divide the main cavity (10) into a lower air distribution cavity, a middle heating cavity and an upper air outlet cavity which are arranged in sequence from bottom to top; At least one wind uniformity plate (13) is vertically arranged in the lower wind division cavity to divide the lower wind division cavity into at least two wind guide cavities arranged on the left and right; wind uniformity holes (131) are evenly arranged on the wind uniformity plate (13); The side wall of the lower air distribution cavity is provided with an air inlet (14) and an air distribution component (15) corresponding to the air inlet (14), so as to cooperate with the air uniformity hole (131) to uniformly guide the incoming air into the plurality of air guide cavities; The middle layer heating cavity is provided with heating modules corresponding to different wind guide cavities respectively, so as to heat the positive wind introduced from the wind guide cavity and introduce it into the upper layer wind outlet cavity; The side wall of the upper air outlet cavity is provided with a plurality of air outlets (18) in parallel, so as to evenly discharge the introduced hot air to the heating station.

2. The multi-outlet air heating box according to claim 1, characterized in that: The air distribution component (15) comprises two air distribution plates symmetrically arranged in the upper and lower parts, and a wind shield; the spacing between the two air distribution plates corresponding to one end of the air inlet (14) is smaller than the spacing between the two ends away from the air inlet (14), and the two ends of the wind shield are respectively connected to one end of the two air distribution plates away from the air inlet (14), so that air distribution ports are formed on both sides for distributing the straight wind coming in from the air inlet (14) from the air distribution ports on both sides.

3. The multi-outlet air heating box according to claim 1, characterized in that: It also includes a temperature sensor (19) corresponding to the upper air outlet cavity.

4. The multi-outlet air heating box according to claim 1, characterized in that: The heating module comprises a primary heating component (16) located at the lower layer and close to the outlet of the air guide cavity, and a secondary heating component (17) located at the upper layer and close to the outlet of the middle layer heating cavity.

5. The multi-outlet air heating box according to claim 4, characterized in that: The first-stage heating component (16) and the second-stage heating component (17) both comprise a mounting plate (20) detachably mounted on the inner wall of the middle-layer heating chamber by means of a locking screw (21), mounting blocks (22) arranged in parallel on the lower side of the mounting plate (20) along the depth direction of the middle-layer heating chamber, a clamping groove (221) provided on the side of the mounting block (22), and a heating tube (23) arranged along the depth direction of the middle-layer heating chamber and clamped in the clamping groove (221).

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