Vertical graphite boat

Abstract

The utility model provides a vertical graphite boat which comprises a graphite flake group and a plurality of connecting rods, the graphite flake group is provided with a plurality of graphite flakes which are transversely arranged at intervals, and the connecting rods are transversely arranged in the graphite flakes in a penetrating mode. The graphite flake is provided with a plurality of silicon wafer placing positions longitudinally arranged at intervals and a plurality of clamping point groups for fixing silicon wafers located in the silicon wafer placing positions, each tightening assembly comprises two reinforcing plates and a reinforcing pull rod, the two reinforcing plates are installed on the two sides of the graphite flake group, and the reinforcing pull rod is installed on the two sides of the graphite flake group. The reinforcing pull rod transversely penetrates through the plurality of graphite sheets, and the two ends of the reinforcing pull rod are fixedly connected with the two reinforcing plates; the vertical graphite boat provided by the utility model can improve the phenomenon that the vertical graphite boat is easy to deform and translocate under the action of high temperature and gravity.

Description

Technical Field

[0001] This utility model belongs to the field of solar photovoltaic cell production equipment, and more specifically, it relates to a vertical graphite boat. Background Technology

[0002] With the increasing global demand for renewable energy, the solar photovoltaic industry has developed rapidly. The process typically involves first loading silicon wafers into a specific carrier, then transferring the carrier to a reaction chamber, where specific reaction gases are introduced to perform processes such as coating, diffusion, or oxidation on the silicon wafers.

[0003] The carrier is typically a graphite boat. As production capacity demands continue to expand, graphite boats are becoming increasingly larger, carrying more and more silicon wafers, resulting in increased height and weight. In existing vertical furnaces, the graphite boat is placed vertically, and prolonged operation in a high-temperature environment can easily lead to deformation and displacement. Utility Model Content

[0004] The purpose of this invention is to provide a vertical graphite boat to improve the problem that existing vertical graphite boats are prone to deformation and displacement under high temperature and gravity.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A vertical graphite boat is provided, comprising a graphite sheet assembly and multiple connecting rods. The graphite sheet assembly has multiple graphite sheets arranged laterally at intervals. The connecting rods are transversely inserted through the multiple graphite sheets. Each graphite sheet has multiple silicon wafer placement positions arranged longitudinally at intervals, and multiple sets of locking points for fixing the silicon wafers located in the silicon wafer placement positions. The boat is characterized by further comprising multiple tightening components. Each tightening component includes two reinforcing plates and a reinforcing rod. The two reinforcing plates are installed on both sides of the graphite sheet assembly, and the reinforcing rod is transversely inserted through the multiple graphite sheets. Both ends of the reinforcing rod are fixedly connected to the two reinforcing plates.

[0007] Furthermore, the reinforcing rod is provided with screw pins at both ends, and the reinforcing plate is provided with wedge blocks, with the screw pins and wedge blocks engaging in a wedge shape.

[0008] Furthermore, some of the connecting rods are transversely inserted into the multiple graphite sheets and the two reinforcing plates.

[0009] Furthermore, the number of tightening components is three, including a first tightening component installed near the top of the graphite sheet group, a second tightening component installed near the middle of the graphite sheet group, and a third tightening component installed near the bottom of the graphite sheet group.

[0010] Furthermore, it also includes a boat bracket, which has a base plate and two vertical rods. The base plate is located below the bottom of the graphite sheet assembly, the lower ends of the two vertical rods are connected to both sides of the base plate, and the upper ends of the two vertical rods are connected to both ends of the second reinforcing rod in the second tightening assembly.

[0011] Furthermore, the upper end of the vertical rod is provided with a limiting groove for engaging with the end of the second reinforcing tie rod.

[0012] Furthermore, the bottom of the graphite sheet assembly has an inwardly recessed groove, and the boat bracket also has a crossbar for limiting and engaging with the groove.

[0013] Furthermore, the two ends of the crossbar are connected to the two vertical bars.

[0014] Furthermore, an insulating pad is provided between the base plate and the bottom of the graphite sheet assembly.

[0015] Furthermore, the number of insulating pads is two, and the two insulating pads are arranged side by side with a gap between them.

[0016] The vertical graphite boat provided by this utility model has at least one of the following beneficial effects:

[0017] 1. The vertical graphite boat includes a tightening assembly consisting of two reinforcing plates and a reinforcing tie rod. Multiple tightening assemblies are provided to tighten all graphite sheets in the graphite sheet group, thereby improving the vertical graphite boat from deformation and displacement under high temperature and gravity.

[0018] 2. The two ends of the reinforcing rod are limited by screw pins. The reinforcing plate is equipped with wedge blocks. The screw pins and wedge blocks are wedge-shaped, so the fit between the reinforcing rod and the reinforcing plate is tighter under the action of gravity.

[0019] 3. The vertical graphite boat also includes a boat support frame, which is fixedly connected to a reinforcing tie rod installed near the middle of the graphite sheet assembly by the vertical rod in the extended boat support frame, thereby improving the overall strength of the graphite boat and preventing it from falling over.

[0020] 4. A crossbar is also provided on the boat support frame, and the crossbar can be matched with the groove at the bottom of the graphite sheet assembly to better prevent tipping.

[0021] 5. An insulating pad is also provided between the base plate and the graphite sheet assembly in the boat bracket to prevent electrical conductivity between the graphite sheet assembly and the boat bracket. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A three-dimensional structural schematic diagram of the first vertical graphite boat provided by this utility model;

[0024] Figure 2 for Figure 1 Enlarged structural diagram at point A in the middle;

[0025] Figure 3 A side view of the first vertical graphite boat provided by this utility model;

[0026] Figure 4 A cross-sectional structural schematic diagram of the first vertical graphite boat provided by this utility model;

[0027] Figure 5 A three-dimensional structural schematic diagram of the second type of vertical graphite boat provided by this utility model;

[0028] Figure 6 An exploded structural diagram of the second type of vertical graphite boat provided by this utility model;

[0029] The main markings in the attached figures are as follows:

[0030] 1. Graphite sheet; 2. Connecting rod; 3. Reinforcing plate; 4. Reinforcing tie rod; 5. Screw pin; 6. Wedge block; 7. Boat bracket;

[0031] 11. Silicon wafer placement position; 12. Clamping point; 13. Groove;

[0032] 31. First reinforcing plate; 32. Second reinforcing plate; 33. Third reinforcing plate;

[0033] 41. First reinforcing tie rod; 42. Second reinforcing tie rod; 43. Third reinforcing tie rod;

[0034] 71. Base plate; 72. Vertical rod; 73. Limiting groove; 74. Horizontal rod; 75. Insulating pad. Detailed Implementation

[0035] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0036] Please refer to the following: Figures 1 to 4 The vertical graphite boat provided by this utility model includes at least a graphite sheet group and multiple connecting rods 2. The graphite sheet group has multiple graphite sheets 1 arranged horizontally at intervals. The connecting rods 2 are inserted horizontally through the multiple graphite sheets 1. The graphite sheets 1 are provided with multiple silicon wafer placement positions 11 arranged vertically at intervals, as well as multiple locking point groups for fixing the silicon wafers located in the silicon wafer placement positions 11.

[0037] Meanwhile, the vertical graphite boat also includes multiple tightening components, which include two reinforcing plates 3 and a reinforcing rod 4. The two reinforcing plates 3 are installed on both sides of the graphite sheet group, and the reinforcing rod 4 is transversely inserted into the multiple graphite sheets 1. The two ends of the reinforcing rod 4 are fixedly connected to the two reinforcing plates 3.

[0038] The vertical graphite boat provided by this utility model includes multiple tightening components. Each tightening component is formed by two reinforcing plates 3 and a reinforcing tie rod 4. The tightening components with this structure can tighten all the graphite sheets 1 in the graphite sheet group, thereby improving the phenomenon that the vertical graphite boat is prone to deformation and displacement under high temperature and gravity.

[0039] It should be noted that the silicon wafer placement position 11 corresponds one-to-one with the locking point group. The locking point group includes multiple locking points 12 arranged around the same silicon wafer placement position 11. The shape of the silicon wafer placement position 11 can be, but is not limited to, rectangular, circular or rhomboid.

[0040] It should be understood that the present invention can flexibly set the specific number of components such as graphite sheet 1, connecting rod 2, silicon wafer placement position 11, locking point group, locking point 12 in the locking point group, and tightening component in the graphite sheet group according to actual application needs.

[0041] In a further preferred embodiment, such as Figure 2 As shown, the reinforcing tie rod 4 is provided with screw pins 5 at both ends, and the reinforcing plate 3 is provided with wedge blocks 6. The screw pins 5 and the wedge blocks 6 are wedge-shaped.

[0042] In practical applications, the upper end of the screw pin 5 has a tapered bevel, and the tapered bevel of the screw pin 5 fits tightly with the wedge bevel of the wedge block 6.

[0043] This utility model uses a reinforcing tie rod 4 with screw pins 5 at both ends to achieve limiting. The screw pins 5 and the wedge block 6 are wedge-shaped, so the screw pins 5 and the wedge block 6 are more tightly fitted and stronger under the action of gravity. This increases the tightening force of the tightening component on the graphite sheet group and better improves the phenomenon that the vertical graphite boat is prone to deformation and displacement under the action of high temperature and gravity.

[0044] In a further preferred embodiment, such as Figure 1 , Figure 4As shown, part of the connecting rod 2 is horizontally inserted through multiple graphite sheets 1 and two reinforcing plates 3.

[0045] To save installation time and cost, the utility model utilizes the original connecting rod 2 to be inserted through the graphite sheet 1 and the reinforcing plate 3 at the same time. Both ends of the connecting rod 2 are fixed by nuts, thereby fixing the two reinforcing plates 3 on both sides of the graphite sheet group.

[0046] Of course, in other alternative embodiments, the reinforcing plate 3 can also be arranged to avoid the connecting rod 2, and additional screws are used to fix the reinforcing plate 3 on the side of the graphite sheet group, which is convenient for disassembly and replacement.

[0047] In a further preferred embodiment, as Figure 3 、 Figure 4 shown, the number of tightening components is three. The three tightening components include a first tightening component installed near the top of the graphite sheet group, a second tightening component installed near the middle of the graphite sheet group, and a third tightening component installed near the bottom of the graphite sheet group.

[0048] It should be noted that the first tightening component includes two first reinforcing plates 31 and a first reinforcing pull rod 41, the second tightening component includes two second reinforcing plates 32 and a second reinforcing pull rod 42, and the third tightening component includes two third reinforcing plates 33 and a third reinforcing pull rod 43. The shapes and sizes of the first reinforcing plate 31, the second reinforcing plate 32, and the third reinforcing plate 33 can be the same or different. The cross-sectional shapes and sizes of the first reinforcing pull rod 41, the second reinforcing pull rod 42, and the third reinforcing pull rod 43 can be the same or different. As an example, the first reinforcing plate 31 is a "convex" shaped plate, and the second reinforcing plate 32 and the third reinforcing plate 33 are rectangular plates. The cross-sectional shapes of the first reinforcing pull rod 41 and the third reinforcing pull rod 43 are elliptical, and the cross-sectional shape of the second reinforcing pull rod 42 is circular.

[0049] The utility model adopts a tightening component to be respectively arranged at the top, middle, and bottom positions near the graphite sheet group along the longitudinal direction, thereby increasing the tightening force on the graphite sheet group and better improving the phenomena such as deformation and dislocation that are likely to occur in the vertical graphite boat under the action of high temperature and gravity.

[0050] In a further preferred embodiment, as Figure 5 、 Figure 6 shown, this vertical graphite boat further includes a boat bracket 7. The boat bracket 7 has a bottom plate 71 and two vertical rods 72. The bottom plate 71 is located below the bottom of the graphite sheet group. The lower ends of the two vertical rods 72 are connected to both sides of the bottom plate 71, and the upper ends of the two vertical rods 72 are connected to both ends of the second reinforcing pull rod 42 in the second tightening component.

[0051] The vertical graphite boat provided by this utility model may also include a boat support 7, and by extending the vertical rod 72 in the boat support 7, the vertical rod 72 is fixedly connected to the second reinforcing tie rod 42 (i.e., the reinforcing tie rod 4 installed near the middle position of the graphite sheet group), thereby improving the overall strength of the graphite boat and preventing it from falling over.

[0052] In a further preferred embodiment, such as Figure 6 As shown, the upper end of the vertical rod 72 is provided with a limiting groove 73 for cooperating with the end of the second reinforcing tie rod 42.

[0053] This utility model adopts a limit groove 73 at the upper end of the vertical rod 72, so that the vertical rod 72 can be matched with the second reinforcing tie rod 42 for a better anti-tipping function.

[0054] In a further preferred embodiment, such as Figure 6 As shown, the bottom of the graphite sheet assembly has an inwardly recessed groove 13, and the boat bracket 7 also has a crossbar 74 for limiting and engaging with the groove 13.

[0055] This utility model adopts a boat support 7 with a crossbar 74, which can be matched with the groove 13 at the bottom of the graphite sheet group to better prevent tipping.

[0056] In a further preferred embodiment, such as Figure 6 As shown, the two ends of the horizontal bar 74 are connected to the two vertical bars 72.

[0057] It should be noted that the crossbar 74 and the two vertical bars 72 can be integrally formed or detachably connected. Of course, in other embodiments, the crossbar 74 can also be integrally formed with the base plate 71.

[0058] In a further preferred embodiment, such as Figure 6 As shown, an insulating pad 75 is provided between the base plate 71 and the bottom of the graphite sheet assembly. This insulating pad 75 can prevent electrical conductivity between the graphite sheet assembly and the boat bracket 7.

[0059] In a further preferred embodiment, such as Figure 6 As shown, there are two insulating pads 75, which are arranged side by side with a gap between them. The gap between the two insulating pads 75 allows the crossbar 74 in the boat bracket 7 to pass through.

[0060] It should be noted that the two insulating pads 75 can have the same shape and different dimensions. In practical applications, the specific shape and dimensions of the two insulating pads 75 can be determined by considering both the bottom shape of the graphite sheet assembly and the bottom shape of the boat bracket 7.

[0061] The vertical graphite boat provided by this utility model is equipped with a tightening assembly formed by two reinforcing plates and a reinforcing rod. Multiple tightening assemblies are provided to tighten all the graphite sheets in the graphite sheet assembly, thereby improving the vertical graphite boat's resistance to deformation and displacement under high temperature and gravity. Furthermore, the reinforcing rod is limited at both ends by screw pins, and wedge-shaped blocks are provided on the reinforcing plates. The screw pins and wedge-shaped blocks engage in a wedge-shaped fit, resulting in a tighter fit between the reinforcing rod and the reinforcing plates under gravity. Furthermore, a boat support frame is provided, and the vertical rod in the extended boat support frame is fixedly connected to the reinforcing rod installed near the middle of the graphite sheet assembly, thereby improving the overall strength of the graphite boat and preventing tipping. Furthermore, a horizontal bar is provided on the boat support frame, which engages with the groove at the bottom of the graphite sheet assembly for better anti-tipping effect. Furthermore, an insulating pad is provided between the bottom plate of the boat support frame and the graphite sheet assembly to prevent electrical conductivity between the graphite sheet assembly and the boat support frame.

[0062] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A vertical graphite boat comprising a graphite sheet group having a plurality of graphite sheets arranged in a spaced-apart transverse array and a plurality of connecting rods arranged in a transverse direction through the plurality of graphite sheets, the graphite sheets being provided with a plurality of silicon sheet placement sites arranged in a spaced-apart longitudinal array and a plurality of sets of clamping points for securing silicon sheets placed in the silicon sheet placement sites, characterized in that, The graphite sheet group is provided with a plurality of tightening assemblies, each of which comprises two reinforcing plates and a reinforcing pull rod, the two reinforcing plates are installed on both sides of the graphite sheet group, and the reinforcing pull rod is arranged in the plurality of graphite sheets in the transverse direction and is fixedly connected to the two reinforcing plates at both ends. ​ 2. The vertical graphite boat of claim 1, wherein, The reinforcing pull rod is provided with a screw pin at both ends, and the reinforcing plate is provided with a wedge-shaped block, and the screw pin is wedge-shaped matched with the wedge-shaped block.

3. The vertical graphite boat of claim 1, wherein, Part of the connecting rods are arranged in the plurality of graphite sheets and the two reinforcing plates in the transverse direction.

4. The vertical graphite boat of claim 1, wherein, The number of the tightening assemblies is three, and the three tightening assemblies comprise a first tightening assembly installed near the top of the graphite sheet group, a second tightening assembly installed near the middle of the graphite sheet group, and a third tightening assembly installed near the bottom of the graphite sheet group.

5. The vertical graphite boat of claim 4, wherein, The graphite sheet group is provided with a boat bracket, the boat bracket has a bottom plate and two vertical rods, the bottom plate is located below the bottom of the graphite sheet group, the lower ends of the two vertical rods are connected to both sides of the bottom plate, and the upper ends of the two vertical rods are connected to both ends of the second reinforcing pull rod of the second tightening assembly.

6. The vertical graphite boat of claim 5, wherein, The upper end of the vertical rod is provided with a limiting groove for limiting cooperation with the end of the second reinforcing pull rod.

7. The vertical graphite boat of claim 5, wherein, The bottom of the graphite sheet group has an inwardly recessed groove, and the boat bracket further has a cross bar for limiting cooperation with the groove.

8. The vertical graphite boat of claim 7, wherein, The cross bar is connected to the two vertical rods at both ends.

9. The vertical graphite boat of claim 5, wherein, An insulating pad is arranged between the bottom plate and the bottom of the graphite sheet group.

10. The vertical graphite boat of claim 9, wherein, The number of the insulating pads is two, and the two insulating pads are arranged side by side and spaced apart.

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