Special-shaped oxygen reduction ring of single crystal furnace

Abstract

The utility model discloses a special-shaped oxygen reduction ring of a single crystal furnace, which comprises two arc-shaped supporting plates which are oppositely arranged and are positioned at the bottom, and a middle arc-shaped oxygen reduction plate and a top arc-shaped oxygen reduction plate with an arc surface are coaxially arranged above the arc-shaped supporting plates; the opening direction of the middle arc-shaped oxygen reduction plate and the opening direction of the top arc-shaped oxygen reduction plate are consistent with the opening direction of the arc-shaped supporting plate. According to the utility model, the middle arc-shaped oxygen reduction plate with the inclined surface and the top arc-shaped oxygen reduction plate with the cambered surface are sequentially arranged right above the arc-shaped supporting plate, so that airflow and volatile matters can be guided to quickly pass through, the oxygen content is discharged in time, meanwhile, crystal pulling is smoother, and the cooling effect and the oxygen reduction effect are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of single crystal furnace manufacturing, in particular to a special-shaped oxygen reduction ring for a single crystal furnace. Background Art

[0002] Solar energy is an ideal clean energy source. The development of the photovoltaic industry is crucial for adjusting the energy structure, promoting changes in energy production and consumption, and promoting ecological progress. In recent years, as Topcon cells have become mainstream, low oxygen content in monocrystalline silicon ingots has become a key research focus in the industry. With the continued expansion of the photovoltaic thermal market and the mainstream adoption of Topcon cells, the demand for oxygen content in solar cells has become increasingly stringent.

[0003] Currently, traditional oxygen reduction rings are used. The top surface of the traditional oxygen reduction ring is flat, which hinders the airflow and discharge of volatiles, affecting crystal pulling and oxygen content, resulting in poor oxygen reduction effect.

[0004] In view of this, this application is filed. Utility Model Content

[0005] The purpose of the utility model is to provide a special-shaped deoxidation ring for a single crystal furnace, so as to solve the problem that the deoxidation effect of the planar deoxidation ring in the prior art is poor.

[0006] In order to solve the above technical problems, the present invention adopts the following solutions:

[0007] A special-shaped deoxidation ring for a single crystal furnace comprises two arc-shaped support plates arranged opposite to each other and located at the bottom, a middle arc-shaped deoxidation plate and a top arc-shaped deoxidation plate with an arc surface are coaxially arranged above the arc-shaped support plates, and the opening directions of the middle arc-shaped deoxidation plate and the top arc-shaped deoxidation plate are consistent with the opening direction of the arc-shaped support plates.

[0008] The technical concept of this application is to set the top plane of the traditional oxygen reduction ring to an arc surface, that is, the surface of the top arc-shaped oxygen reduction plate is set to an arc surface and its bottom surface remains flat, which can guide the airflow and volatiles to pass through quickly, allowing the oxygen content to be discharged in time, while making the crystal pulling smoother and improving the cooling effect and oxygen reduction effect.

[0009] Furthermore, the arc surface is located at the top of the top arc-shaped oxygen reduction plate.

[0010] Furthermore, the central angle of the arc surface is 60°~180°.

[0011] Furthermore, both sides of the central arc-shaped oxygen reduction plate are provided with inclined surfaces with the same angle, and the inclined surfaces are arranged upward.

[0012] Furthermore, the angle between the inclined plane and the horizontal plane is 30°~60°.

[0013] Furthermore, a first support column and a second support column are respectively provided on the bottom surface of the surface of the middle arc-shaped oxygen reduction plate and fixedly connected to the top arc-shaped oxygen reduction plate and the arc-shaped support plate.

[0014] Furthermore, the fixed connection is welding.

[0015] Furthermore, the first support column and the second support column are coaxially arranged.

[0016] Furthermore, the second support column is longer than the first support column.

[0017] Furthermore, the surface width of the arc-shaped support plate is greater than the surface width of the middle arc-shaped oxygen reduction plate, and the central angles of the arc-shaped support plate, the middle arc-shaped oxygen reduction plate, and the top arc-shaped oxygen reduction plate are all the same.

[0018] The utility model has the beneficial effects:

[0019] The utility model sequentially arranges a middle arc-shaped oxygen reduction plate and a top arc-shaped oxygen reduction plate right above the arc-shaped support plate. The arc surface on the top of the top arc-shaped oxygen reduction plate can guide the airflow and volatiles to pass through quickly, allowing the oxygen content to be discharged in time, while making crystal pulling smoother; the inclined surfaces on both sides of the middle arc-shaped oxygen reduction plate can force the flow of argon to form a forced thermal convection effect, thereby enhancing the cooling effect of the argon gas, reducing the generation of oxygen inside the crucible, and improving the oxygen reduction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural diagram of the utility model;

[0021] Figure 2 This is a schematic cross-sectional view of the utility model;

[0022] Figure 3 It is the main view of the utility model.

[0023] Figure numerals: 1-arc-shaped support plate, 2-middle arc-shaped deoxidation plate, 20-inclined surface, 3-top arc-shaped deoxidation plate, 30-arc-shaped surface, 4-first support column, 5-second support column. DETAILED DESCRIPTION

[0024] The present invention will be further described in detail below in conjunction with the embodiments and drawings, but the implementation manner of the present invention is not limited thereto.

[0025] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inside", "outside", "front", "back", "top", "bottom", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "opened," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0027] Example 1

[0028] Embodiment 1 of the present invention is a special-shaped deoxidation ring for a single crystal furnace, comprising two arc-shaped support plates 1 arranged opposite to each other and located at the bottom, a middle arc-shaped deoxidation plate 2 and a top arc-shaped deoxidation plate 3 with an arc surface 30 coaxially arranged above the arc-shaped support plate 1, and the opening directions of the middle arc-shaped deoxidation plate 2 and the top arc-shaped deoxidation plate 3 are consistent with the opening direction of the arc-shaped support plate 1.

[0029] Reference Figures 1 to 3 The technical concept of the present application is to set the top plane of the traditional deoxidation ring as an arc surface 30, that is, the surface of the top arc-shaped deoxidation plate 3 is set to the arc surface 30 and its bottom surface is still a plane, so that the airflow in the single crystal furnace cavity can pass quickly; because downward exhaust is adopted in the single crystal furnace during the crystal pulling process, the arc surface 30 is set to take away volatiles more easily, and at the same time, the bottom surface of the top arc-shaped deoxidation plate 3 is a plane, which can conduct heat from the lower part, and conduct heat from the lower part to the upper part through insulation, making crystal pulling smoother.

[0030] In addition, there are two arc-shaped support plates 1, two middle arc-shaped oxygen reduction plates 2 and two top arc-shaped oxygen reduction plates 3 in the special-shaped oxygen reduction ring, which are arranged opposite to each other.

[0031] In some preferred embodiments, the arc surface 30 is located at the top of the top arc-shaped oxygen reduction plate 3. Figure 2 , place the special-shaped deoxidation ring in the heat preservation tube, and the arc surface 30 of the top arc-shaped deoxidation plate 3 allows the air flow in the furnace cavity to pass quickly.

[0032] In some preferred embodiments, the central angle of the arc surface 30 is 60° to 180°.

[0033] Specifically, the arc surface 30 is mainly formed to be convex upward with the plane of the top arc-shaped oxygen reduction plate 3 as a reference, wherein the central angle of the arc surface 30 can be 60°, 90° or 180°.

[0034] In some preferred embodiments, both sides of the central arc-shaped oxygen reduction plate 2 are provided with inclined surfaces 20 with the same angle, and the inclined surfaces 20 are arranged upward.

[0035] The present application also sets inclined surfaces 20 on both sides of the middle curved deoxidation plate 2 located directly below the top curved deoxidation plate 3, whose vertical cross-section is an isosceles trapezoid, and the surface width is smaller than the bottom width. The inclined surface 20 can force the flow of argon to form a forced heat convection effect, thereby improving the cooling effect of the argon, reducing the generation of oxygen inside the crucible, and improving the deoxidation effect.

[0036] In some preferred embodiments, the angle between the inclined plane 20 and the horizontal plane is 30° to 60°, wherein the angle between the inclined plane 20 and the horizontal plane can be 30°, 45°, or 60°.

[0037] In some preferred embodiments, the bottom surface of the surface of the middle arc-shaped oxygen reduction plate 2 is respectively provided with a first support column 4 and a second support column 5 which are fixedly connected to the top arc-shaped oxygen reduction plate 3 and the arc-shaped support plate 1 .

[0038] Reference Figure 1 A second support column 5 and a first support column 4 are sequentially arranged above the arc-shaped support plate 1 to connect the middle arc-shaped deoxidation plate 2 and the top arc-shaped deoxidation plate 3 respectively, so that the entire special-shaped deoxidation plate is in a firmly connected state to prevent the special-shaped deoxidation plate from shifting during use.

[0039] In some preferred embodiments, the fixed connection is welding. The first support column 4 and the second support column 5 are connected within the special-shaped oxygen reduction ring by welding. Welding can strengthen the connection between the support plate and the two oxygen reduction plates. The number of first and second support columns is at least three, and they are evenly arranged to achieve a balanced connection.

[0040] In some preferred embodiments, the first support column 4 is coaxially arranged with the second support column 5. By using the coaxial arrangement, the first support column 4 and the second support column 5 can be stressed on the same vertical axis, while improving the stability of their respective connections.

[0041] In some preferred embodiments, the second support column 5 is longer than the first support column 4. The arc-shaped support plate 1 serves as the base for the middle arc-shaped deoxidation plate 2 and the top arc-shaped deoxidation plate 3. The middle arc-shaped deoxidation plate 2 and the top arc-shaped deoxidation plate 3 are lifted to the desired deoxidation position by the second support column 5. The first support column 4 sets a top arc-shaped deoxidation plate 3 on the surface of the middle arc-shaped deoxidation plate 2. The specific structures of the two deoxidation plates are different and the effects brought about are different. The arc surface 30 on the top of the top arc-shaped deoxidation plate 3 can guide the airflow and volatiles to pass through quickly, allowing the oxygen content to be discharged in time, while making the crystal pulling smoother; the inclined surfaces 20 on both sides of the middle arc-shaped deoxidation plate 2 can force the flow of argon to form a forced thermal convection effect, thereby enhancing the cooling effect of the argon, reducing the generation of oxygen inside the crucible, and improving the deoxidation effect.

[0042] In some preferred embodiments, the surface width of the arc-shaped support plate 1 is greater than the surface width of the middle arc-shaped deoxygenation plate 2, and the central angles of the arc-shaped support plate 1, the middle arc-shaped deoxygenation plate 2, and the top arc-shaped deoxygenation plate 3 are all the same.

[0043] Specifically, the arc-shaped support plate 1 can be made to provide stable support, and the specific value of the central angle can be set according to actual needs. At the same time, multiple components of the special-shaped deoxidation ring are made of carbon-carbon or graphite.

[0044] The working principle of the utility model is as follows: when in use, the arc surface 30 on the top of the top arc-shaped oxygen reduction plate 3 in the special-shaped oxygen reduction ring can guide the airflow and volatiles to pass through quickly, allowing the oxygen content to be discharged in time, and at the same time making the crystal pulling smoother; the inclined surfaces 20 on both sides of the middle arc-shaped oxygen reduction plate 2 below the top arc-shaped oxygen reduction plate 3 can force the flow of argon to form a forced heat convection effect, thereby improving the cooling effect of the argon, reducing the oxygen generation inside the crucible, and improving the oxygen reduction effect.

[0045] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Based on the technical essence of the present invention and within the spirit and principles of the present invention, any simple modification, equivalent replacement and improvement of the above embodiment shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A special-shaped deoxidation ring for a single crystal furnace, characterized in that: The invention comprises two arc-shaped support plates (1) arranged opposite to each other and located at the bottom, a middle arc-shaped deoxidation plate (2) and a top arc-shaped deoxidation plate (3) having an arc surface (30) are coaxially arranged above the arc-shaped support plates (1), and the opening directions of the middle arc-shaped deoxidation plate (2) and the top arc-shaped deoxidation plate (3) are consistent with the opening direction of the arc-shaped support plates (1).

2. The single crystal furnace special-shaped deoxidation ring according to claim 1, characterized in that: The arc surface (30) is located at the top of the top arc-shaped oxygen reduction plate (3).

3. The single crystal furnace special-shaped deoxidation ring according to claim 1, characterized in that: The central angle of the arc surface (30) is 60° to 180°.

4. The single crystal furnace special-shaped deoxidation ring according to claim 1, characterized in that: Both sides of the central arc-shaped oxygen reduction plate (2) are provided with inclined surfaces (20) with the same angle, and the inclined surfaces (20) are arranged upward.

5. The single crystal furnace special-shaped deoxidation ring according to claim 4, characterized in that: The angle between the inclined surface (20) and the horizontal plane is 30° to 60°.

6. The single crystal furnace special-shaped deoxidation ring according to claim 4, characterized in that: The bottom surface of the surface of the middle arc-shaped oxygen reduction plate (2) is respectively provided with a first support column (4) and a second support column (5) which are fixedly connected to the top arc-shaped oxygen reduction plate (3) and the arc-shaped support plate (1).

7. The single crystal furnace special-shaped deoxidation ring according to claim 6, characterized in that: The fixed connection method is welding.

8. The single crystal furnace special-shaped deoxidation ring according to claim 6, characterized in that: The first support column (4) and the second support column (5) are coaxially arranged.

9. The single crystal furnace special-shaped deoxidation ring according to claim 6, characterized in that: The second support column (5) is longer than the first support column (4).

10. The single crystal furnace special-shaped deoxidation ring according to claim 6, characterized in that: The surface width of the arc-shaped support plate (1) is greater than the surface width of the middle arc-shaped deoxidation plate (2), and the central angles of the arc-shaped support plate (1), the middle arc-shaped deoxidation plate (2), and the top arc-shaped deoxidation plate (3) are all the same.

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