Supporting cushion block and reaction heating furnace

Abstract

The utility model relates to the technical field of photovoltaics and semiconductors, and particularly discloses a supporting cushion block and a reaction heating furnace, the supporting cushion block comprises a cushion block main body, a bonding layer and a flexible isolation layer, the cushion block main body is provided with a bearing part, and the bearing part is configured to support a furnace tube in the reaction heating furnace. The flexible isolation layer is installed on the bearing part through the bonding layer. And the flexible isolation layer is configured to be in contact with the wall of the furnace tube when the furnace tube is supported by the supporting part. According to the supporting cushion block, on one hand, hard contact between the furnace tube and the supporting cushion block can be converted into soft contact through the flexible isolation layer, the furnace tube is buffered, and the risk that the furnace tube is broken is reduced; on the other hand, the flexible isolation layer can isolate the cushion block body from the furnace tube and prevent crystalline substances from making contact with the furnace tube, the risk of pollution to the furnace tube is reduced, and the service life of the furnace tube is prolonged.

Description

Technical Field

[0001] The present application relates to the fields of photovoltaic and semiconductor technology, and in particular to a support pad and a reaction heating furnace. Background Art

[0002] During the production of photovoltaic cells, the cells undergo diffusion, annealing, and coating processes, all of which must be performed in a reaction furnace. Support structures are installed between the furnace tubes and the furnace body to support the tubes. However, due to the high hardness and resulting brittleness of current furnace tubes, they are prone to colliding with support blocks during transport, resulting in tube breakage. Utility Model Content

[0003] In view of this, the present application provides a support pad and a reaction heating furnace to improve the technical problems that the furnace tubes inside the existing reaction heating furnace are easily damaged and have a short service life.

[0004] One embodiment of the present application provides a support block comprising a block body, an adhesive layer, and a flexible insulating layer. The block body includes a support portion configured to support a furnace tube within a reaction heating furnace. The flexible insulating layer is attached to the support portion via an adhesive layer. The flexible insulating layer is configured to contact the outer wall of the furnace tube when the support portion supports the furnace tube.

[0005] In the aforementioned support block, the flexible insulation layer transforms the hard contact between the furnace tube and the support block into a soft contact. This cushions the furnace tube when it shakes or collides, reducing the risk of breakage. Furthermore, the flexible insulation layer isolates the block body from the furnace tube. If the block body is exposed to high temperatures for extended periods, resulting in crystalline material precipitating, the flexible insulation layer prevents contact between the crystalline material and the furnace tube, thereby reducing the risk of tube contamination and extending its service life.

[0006] In at least one embodiment, the headstock body is configured to be cast from a casting material.

[0007] In at least one embodiment, the casting material is one of reaction-bonded silicon carbide, zirconium oxide ceramics, and aluminum oxide ceramics.

[0008] In at least one embodiment, the supporting portion is coated with an adhesive, and the adhesive forms an adhesive layer after curing.

[0009] In at least one embodiment, the adhesive is one of zirconium phosphate adhesive, magnesium phosphate adhesive, aluminum phosphate adhesive, aluminum chromium phosphate adhesive, chromium phosphate adhesive, silica sol, sodium water glass, and potassium water glass.

[0010] In at least one embodiment, the flexible isolation layer is one of alumina fiber, silicon carbide fiber, and zirconium oxide fiber.

[0011] In at least one embodiment, the support portion includes a first active wall and a second active wall spaced apart, each of the first active wall and the second active wall being provided with a flexible insulating layer. The furnace tube is accommodated between the first active wall and the second active wall, and the first active wall and the second active wall are configured to abut against the outer tube wall of the furnace tube to constrain the position of the furnace tube.

[0012] In at least one embodiment, the first active wall intersects with the second active wall, and an opening at an angle between the first active wall and the second active wall faces the furnace tube.

[0013] One embodiment of the present application provides a reaction heating furnace, comprising a furnace body, a furnace tube, and the aforementioned support block. The furnace body defines an inner cavity, the furnace tube is mounted within the inner cavity, and a gap is formed between the furnace tube and the furnace body. The support block is positioned below the furnace tube in the direction of gravity; at least a portion of the support block is positioned within the gap and contacts the outer wall of the furnace tube.

[0014] In the above-mentioned reaction heating furnace, the support pad can convert the hard contact between the furnace tube and the support pad into soft contact through a flexible isolation layer to cushion the furnace tube and reduce the risk of the furnace tube breaking; in addition, the flexible isolation can also isolate the pad body from the furnace tube, reducing the risk of crystalline substances precipitating from the pad body in a high-temperature environment for a long time and contaminating the furnace tube, thereby extending the service life of the furnace tube.

[0015] In at least one embodiment, the reaction heating furnace further includes an insulation layer that wraps around the furnace tube. The insulation layer is provided with a stopper hole, the stopper hole opening facing the furnace tube. The support block is installed in the stopper hole, with a portion of the support block extending out of the stopper hole and contacting the outer tube wall of the furnace tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope.

[0017] Figure 1 This is a three-dimensional schematic diagram of a reaction heating furnace when the furnace tube and the supporting pad are separated in one embodiment of the present application;

[0018] Figure 2 This is a structural diagram of the furnace tube and the support pad of the reaction heating furnace in one embodiment of the present application;

[0019] Figure 3 for Figure 2 A partial enlarged view of point A in the middle;

[0020] Figure 4 This is a structural diagram of a support pad in an embodiment of the present application;

[0021] Figure 5 for Figure 4 Front view of the middle support block.

[0022] Description of main component symbols:

[0023] 100. Reaction heating furnace; 10. Furnace body; 11. Inner cavity; 20. Furnace tube; 30. Support pad; 31. Pad body; 311. Bearing portion; 3111. First active wall; 3112. Second active wall; 32. Adhesive layer; 33. Flexible isolation layer; 40. Insulation layer; 41. Limiting hole.

[0024] The following specific implementation methods will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0027] Embodiments of the present application provide a support block comprising a block body, an adhesive layer, and a flexible insulation layer. The block body includes a bearing portion configured to support a furnace tube within a reaction heating furnace. The flexible insulation layer is attached to the bearing portion via an adhesive layer and is configured to contact the outer wall of the furnace tube when the bearing portion supports the furnace tube.

[0028] In the aforementioned support block, the flexible insulation layer transforms the hard contact between the furnace tube and the support block into a soft contact. This cushions the furnace tube when it shakes or collides, reducing the risk of breakage. Furthermore, the flexible insulation layer isolates the block body from the furnace tube. If the block body is exposed to high temperatures for extended periods, resulting in crystalline material precipitating, the flexible insulation layer prevents contact between the crystalline material and the furnace tube, thereby reducing the risk of tube contamination and extending its service life.

[0029] The following describes some embodiments of the present application in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features of the embodiments may be combined with each other.

[0030] An embodiment of the present application provides a reaction heating furnace 100, such as Figure 1 and Figure 2As shown, the reaction heating furnace 100 includes a furnace body 10, a furnace tube 20, and a support block 30. The furnace body 10 defines an inner cavity 11, into which the furnace tube 20 is mounted, with a gap (not shown) formed between the furnace tube 20 and the furnace body 10. Mounting the furnace tube 20 within the inner cavity 11 helps protect the furnace tube 20 and reduces the risk of damage.

[0031] Exemplarily, the furnace body 10 is a hollow structure having an inner cavity 11, and the inner cavity 11 of the furnace body 10 has a circular cross-section. The furnace tube 20 is cylindrical and is installed in the inner cavity 11 of the furnace body 10 along the axis of the furnace body 10, with an annular gap formed between the outer tube wall of the furnace tube 20 and the furnace body 10.

[0032] In other embodiments, the furnace body 10 and the furnace tube 20 may also be in other shapes, which is not limited in this application, and those skilled in the art may choose according to actual conditions.

[0033] In some embodiments, a heating wire (not shown) is embedded in the furnace body 10 to transfer heat to the furnace tube 20 via infrared to meet the temperature required for the reaction in the furnace tube 20 .

[0034] In other embodiments, the reaction heating furnace 100 may also adopt other heating methods, which are not limited in this application, and those skilled in the art may choose according to actual conditions.

[0035] In some embodiments, the furnace tube 20 may be a quartz tube.

[0036] In some embodiments, along the direction of gravity, the support block 30 is located below the furnace tube 20. At least a portion of the support block 30 is disposed in the gap and contacts the outer wall of the furnace tube 20 to support the furnace tube 20.

[0037] Supporting the furnace tube 20 by the support pad 30 helps ensure the stability of the furnace tube 20 , thereby improving the working stability of the reaction heating furnace 100 .

[0038] In some embodiments, as Figure 3 、 Figure 4 and Figure 5 As shown, the support pad 30 includes a pad body 31 , an adhesive layer 32 and a flexible isolation layer 33 . The pad body 31 is provided with a bearing portion 311 , and the bearing portion 311 is configured to support the furnace tube 20 .

[0039] The flexible isolation layer 33 is attached to the support portion 311 via an adhesive layer 32. When the support portion 311 supports the furnace tube 20, the flexible isolation layer 33 is configured to contact the outer wall of the furnace tube 20. When the furnace tube 20 shakes or collides, the flexible isolation layer 33 in the support block 30 cushions the furnace tube 20. If crystallized material precipitates from the block body 31 during prolonged exposure to high temperatures, the flexible isolation layer 33 prevents the crystallized material from contacting the furnace tube 20.

[0040] By providing a flexible isolation layer 33 on the bearing portion 311 of the support pad 30, not only can the hard contact between the furnace tube 20 and the support pad 30 be converted into soft contact, thereby reducing the risk of the furnace tube 20 breaking; the pad body 311 can also be isolated from the furnace tube 20, thereby reducing the risk of contaminating the furnace tube 20 and increasing the service life of the furnace tube 20.

[0041] In some embodiments, the block body 31 is configured to be cast from a casting material. Specifically, a technician first creates a casting mold based on the shape of the outer wall of the furnace tube 20. The casting material is then poured into the casting mold. After the casting material cools and solidifies, the block body with a specific shape is obtained.

[0042] It should be noted that the specific shape specifically refers to a shape that matches the outer peripheral wall of the furnace tube 20 .

[0043] The pad block body 31 adopts a casting method, which not only reduces the production cost of the support pad block 30 but also improves the flexibility of the support pad block 30. The technicians only need to make a corresponding casting mold according to the shape of the outer wall of the furnace tube 20.

[0044] In some embodiments, the casting material is one of reaction-bonded silicon carbide, zirconium oxide ceramic, and aluminum oxide ceramic.

[0045] It should be noted that reaction-sintered silicon carbide, zirconia ceramics and alumina ceramics have better temperature resistance. After being cast and formed, they can not only meet the support hardness requirements of the support pad 30, but also have a better support effect, making the position of the furnace tube 20 more stable, and can also improve the high temperature resistance of the support pad 30, so that the support pad 30 can be suitable for high-temperature furnace tubes 20.

[0046] In other embodiments, the casting material may also be other suitable materials, which is not limited in this application, and those skilled in the art may select according to actual conditions.

[0047] In some embodiments, the bearing portion 311 is coated with an adhesive, which forms the bonding layer 32 after curing. By adopting the coating method, the operation of the technicians is facilitated and the production efficiency is improved.

[0048] In some embodiments, the adhesive is one of zirconium phosphate adhesive, magnesium phosphate adhesive, aluminum phosphate adhesive, aluminum chromium phosphate adhesive, chromium phosphate adhesive, silica sol, sodium water glass, and potassium water glass.

[0049] It should be noted that zirconium phosphate adhesive, magnesium phosphate adhesive, aluminum phosphate adhesive, aluminum chromium phosphate adhesive, chromium phosphate adhesive, silica sol, sodium water glass, and potassium water glass have high temperature resistance after curing and molding, which can ensure that the flexible isolation layer 33 is stably bonded to the bearing part 311 of the pad block body 31.

[0050] In other embodiments, the adhesive may also be other suitable materials, which is not limited in this application, and those skilled in the art may choose according to actual conditions.

[0051] In some embodiments, the flexible isolation layer 33 is one of aluminum oxide fiber, silicon carbide fiber, and zirconium oxide fiber.

[0052] It should be noted that alumina fiber, silicon carbide fiber and zirconia fiber are resistant to high temperatures, which is beneficial to ensure that the flexible isolation layer 33 stably isolates the pad body 31 and the furnace tube 20, and reduces the risk of the flexible isolation layer 33 melting or breaking due to poor temperature resistance.

[0053] In some embodiments, as Figure 4 and Figure 5 As shown, the bearing portion 311 includes a first action wall 3111 and a second action wall 3112 that are spaced apart from each other. The first action wall 3111 and the second action wall 3112 are both provided with a flexible isolation layer 33 .

[0054] The furnace tube 20 is accommodated between the first action wall 3111 and the second action wall 3112 . The first action wall 3111 and the second action wall 3112 are configured to abut against the outer peripheral wall of the furnace tube 20 to restrict the position of the furnace tube 20 .

[0055] As can be understood, when the reaction heating furnace 100 shakes, the first active wall 3111 and the second active wall 3112 both abut against the outer circumferential wall of the furnace tube 20. Thus, the first active wall 3111 and the second active wall 3112 jointly constrain the position of the furnace tube 20, thereby maintaining the furnace tube 20 in its installed position. This ensures that the support block 30 stably supports the furnace tube 20, improving the operational stability of the reaction heating furnace 100.

[0056] In some embodiments, as Figure 4 and Figure 5 As shown, the first action wall 3111 intersects with the second action wall 3112, and the opening at the angle between the first action wall 3111 and the second action wall 3112 faces the furnace tube 20. Exemplarily, the first action wall 3111 and the second action wall 3112 are in a "V" shape.

[0057] When the furnace tube 20 is installed in the inner cavity 11 of the furnace body 10 and is accommodated between the first active wall 3111 and the second active wall 3112, the first active wall 3111 and the second active wall 3112 can jointly share the pressure generated by the furnace tube 20 under the action of gravity, so that the pressure generated by the furnace tube 20 is dispersed to the entire furnace body 10 and is not concentrated on the support pad 30, thereby reducing the risk of breakage and damage of the support pad 30.

[0058] In other embodiments, the first active wall 3111 and the second active wall 3112 may also be arranged in parallel, for example, the first active wall 3111 and the second active wall 3112 are in a "concave" shape. This application does not limit this, and those skilled in the art may choose according to actual conditions.

[0059] In some embodiments, there are two support blocks 30 , which are disposed at the furnace tail of the reaction heating furnace 100 and / or the furnace mouth of the reaction heating furnace 100 , which helps reduce the risk of the furnace tube 20 tilting.

[0060] In some embodiments, there are two or more support blocks 30, which are spaced apart in the furnace body 10 along the axis of the furnace tube 20. The spaced apart support blocks 30 can disperse the pressure in the middle portion of the furnace tube 20, reducing the risk of deformation or rupture of the furnace tube 20.

[0061] In some embodiments, as Figure 1 and Figure 2 As shown, the reaction heating furnace 100 further includes a heat-insulating layer 40 , which wraps the furnace tube 20 and helps to reduce heat loss in the furnace tube 20 .

[0062] In some embodiments, the thermal insulation layer 40 is a high-temperature resistant fiber insulation blanket, which is wrapped around the outer tube wall of the furnace tube 20 .

[0063] In some embodiments, the insulation layer 40 is provided with a limiting hole 41, the opening of the limiting hole 41 faces the furnace tube 20, the support pad 10 is installed in the limiting hole 41, and part of the support pad 20 extends out of the limiting hole 41 and contacts the outer tube wall of the furnace tube 10.

[0064] It can be understood that when the reaction heating furnace 100 shakes, the hole wall of the limiting hole 12 and the side wall of the support pad 30 abut against each other to limit the movement of the support pad 30, which is beneficial to ensure that the support block stably supports the furnace tube 20 and further improves the working stability of the reaction heating furnace 100.

[0065] In addition, those skilled in the art should recognize that the above embodiments are merely intended to illustrate the present application and are not intended to limit the present application. As long as they are within the spirit of the present application, appropriate changes and modifications to the above embodiments are within the scope of disclosure of the present application.

Claims

1. A support pad, characterized in that: The supporting pad includes a pad body, an adhesive layer and a flexible isolation layer. The pad body is provided with a bearing portion, and the bearing portion is configured to support the furnace tube in the reaction heating furnace; the flexible isolation layer is installed on the bearing portion through the adhesive layer, and the flexible isolation layer is configured to contact the outer tube wall of the furnace tube when the bearing portion supports the furnace tube.

2. The support pad according to claim 1, wherein: The spacer body is configured to be cast from a casting material.

3. The support pad according to claim 2, wherein: The casting material is one of reaction-sintered silicon carbide, zirconium oxide ceramics and aluminum oxide ceramics.

4. The support pad according to claim 1, wherein: The bearing portion is coated with an adhesive, and the adhesive forms the bonding layer after being cured.

5. The support pad according to claim 4, characterized in that: The adhesive is one of zirconium phosphate adhesive, magnesium phosphate adhesive, aluminum phosphate adhesive, aluminum chromium phosphate adhesive, chromium phosphate adhesive, silica sol, sodium water glass, and potassium water glass.

6. The support pad according to claim 1, wherein: The flexible isolation layer is one of aluminum oxide fiber, silicon carbide fiber and zirconium oxide fiber.

7. The support pad according to any one of claims 1 to 6, characterized in that: The bearing portion includes a first action wall and a second action wall spaced apart, and both the first action wall and the second action wall are provided with the flexible isolation layer; The furnace tube is accommodated between the first active wall and the second active wall. The first active wall and the second active wall are configured to abut against the outer tube wall of the furnace tube to restrict the position of the furnace tube.

8. The support pad according to claim 7, wherein: The first action wall intersects with the second action wall, and an opening at an angle between the first action wall and the second action wall faces the furnace tube.

9. A reaction heating furnace, characterized in that: The reaction heating furnace comprises: The furnace body is provided with an inner cavity; a furnace tube installed in the inner cavity, with a gap formed between the furnace tube and the furnace body; and The support block according to any one of claims 1 to 8 is located below the furnace tube along the direction of gravity; at least a portion of the support block is disposed in the gap and in contact with the outer tube wall of the furnace tube.

10. The reaction heating furnace according to claim 9, characterized in that: The reaction heating furnace further comprises a thermal insulation layer, wherein the thermal insulation layer wraps the furnace tube; The insulation layer is provided with a limiting hole, the opening of the limiting hole faces the furnace tube, the support block is installed in the limiting hole, and a portion of the support block extends out of the limiting hole and contacts the outer tube wall of the furnace tube.

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