A heat-reflecting and heat-insulating disc-shaped tablet holder
By designing a continuous wavy curved surface structure and a reflective coating on the single crystal furnace guard plate, the problem of heat loss was solved, achieving efficient heat reflection and insulation, and improving heat utilization efficiency and heat preservation effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LESHAN JINGYUNTONG NEW MATERIAL TECH CO LTD
- Filing Date
- 2025-08-08
- Publication Date
- 2026-07-24
Smart Images
Figure CN224548617U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of monocrystalline silicon manufacturing technology, specifically to a protective plate pressing sheet with high-efficiency heat reflection and heat insulation functions. Background Technology
[0002] Currently, in the process of Czochralski crystal pulling using single-crystal furnaces, the protective plates inside the furnace are typically simple flat plate structures or flat plates with a few heat dissipation holes. This type of structure has the following problems: the side near the heater is a flat structure, which has a high absorption rate and low reflectivity for heat radiation, causing a large amount of heat to be lost through the plate itself to the furnace wall or carried away by the cooling system, resulting in low thermal efficiency. The side in contact with the insulating carbon felt is also a flat structure, allowing heat to be transferred from the plate to the outside of the insulation layer through solid conduction, causing heat loss. This heat loss, in turn, requires the heater to output more power to maintain the furnace temperature, increasing energy consumption.
[0003] Therefore, this application is submitted. Utility Model Content
[0004] The purpose of this invention is to provide a protective plate press that can effectively reflect heat radiation, reduce heat loss, and improve heat utilization efficiency, thereby solving the problems existing in the prior art.
[0005] To solve the above-mentioned technical problems, the present invention adopts the following solution: A protective plate with high-efficiency heat reflection and heat insulation functions includes two substrates with the same wavy curved surface structure on both sides. The surface of the substrate is a heat radiation reflective surface facing the main heater, and the bottom surface of the substrate is a heat insulation contact surface in contact with the heat insulation felt.
[0006] Furthermore, the troughs and crests of the heat radiation reflective surface correspond one-to-one with the troughs and crests of the heat insulation contact surface, and the spacing between the corresponding troughs or crests remains consistent.
[0007] Furthermore, the wave crest of the thermal radiation reflective surface is provided with several uniformly arranged grooves along the horizontal plane of the substrate for reflection.
[0008] Furthermore, the cross-section of the groove is circular or rectangular.
[0009] Furthermore, the groove has a diameter of 0.1~0.5mm and a depth of 0.05~0.2mm.
[0010] Furthermore, the heat-insulating contact surface has several uniformly arranged support columns along the horizontal plane of the substrate for support.
[0011] Furthermore, the bottom surface of the support column is at the same level as the bottom of the trough.
[0012] Furthermore, the surface of the heat radiation reflective surface is provided with a reflective coating with a thickness of 20~50μm.
[0013] Furthermore, both the substrate and the support pillar are made of carbon-carbon material.
[0014] The beneficial effects of this utility model are: This invention utilizes identical continuous wavy curved surface structures on the surface and bottom of the substrate to form a heat radiation reflective surface and a heat insulation contact surface, respectively. As heat radiation passes through the crests and troughs, it effectively scatters and reflects the incident heat radiation back to the central area of the furnace's heat field. Simultaneously, the grooves and reflective coating increase the effective heat reflection area and improve the heat radiation reflection efficiency. The heat insulation contact surface reduces its actual contact area with the insulation felt, thereby reducing heat conduction through the solid substrate; it also forms an insulating air layer, hindering downward heat conduction and improving the insulation effect; and the support columns at the crests enhance the installation stability above the insulation felt. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a top view of the structure of this utility model; Figure 4 This is a bottom view of the structure of this utility model; Figure 5 This is a schematic diagram of the assembly structure of the present invention at the furnace bottom.
[0016] Reference numerals: 1-substrate, 2-insulating contact surface, 20-support column, 3-heat radiation reflective surface, 30-reflective coating, 31-groove, 4-crest, 5-trough, 6-insulating felt. Detailed Implementation
[0017] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the implementation of the present invention is not limited thereto.
[0018] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0019] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "have," "install," "connect," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0020] Example 1 Embodiment 1 of this utility model is a protective plate with high-efficiency heat reflection and heat insulation functions, including a substrate 1 with two sides having the same wavy curved surface structure in vertical cross section. The surface of the substrate 1 is a heat radiation reflective surface 3 facing the main heater, and the bottom surface of the substrate 1 is a heat insulation contact surface 2 in contact with the heat insulation felt 6.
[0021] Reference Figure 1 and Figure 2 The protective plate pressing sheet of this utility model is designed by transforming the conventional straight plate flat structure into a continuous wavy curved surface structure. This wavy curved surface has peaks 4 and troughs 5. When the heat radiation reflecting surface 3 receives heat radiation from the main heater, it can effectively scatter and reflect the incident heat radiation back to the central area of the furnace heat field, rather than absorbing it and losing it through heat conduction or being absorbed by the furnace wall. The heat insulation contact surface 2 on the bottom surface of the substrate 1 reduces its actual contact area with the heat insulation felt 6, thereby reducing the heat conduction transfer through the solid substrate 1; at the same time, it forms a heat insulation air layer, which hinders the downward conduction of heat and improves the heat insulation effect; at the same time, the edge of the bottom of the protective plate pressing sheet substrate 1 is a peak 4, which can reduce the contact area between the edge and the heat insulation felt 6 and enhance the heat insulation. Meanwhile, the substrate 1 and its two continuous wavy curved surfaces can be formed by mold pressing, which is the existing technology.
[0022] To ensure that the heat radiation reflective surface 3 and the heat insulation contact surface 2 on both sides of the substrate 1 have the same wavy curved surface structure, the troughs 5 and peaks 4 of the heat radiation reflective surface 3 correspond one-to-one with the troughs 5 and peaks 4 of the heat insulation contact surface 2, respectively. The height of the wave and the trough 5 relative to the horizontal plane is 3~8mm, and the spacing between the corresponding troughs 5 or peaks 4 is consistent. The wavy curved surface structures between the two are parallel to each other, and the corresponding peaks 4 and troughs 5 are located on the same vertical axis, thereby ensuring that the vertical spacing of the peaks 4 or troughs 5 is consistent. The vertical spacing is also the overall thickness of the substrate 1, which can be set according to the actual thermal field size of the single crystal furnace, and will not be listed here.
[0023] Example 2 To enhance the reflection efficiency of the heat radiation reflecting surface 3, the wave crest 4 of the heat radiation reflecting surface 3 is provided with a plurality of uniformly arranged grooves 31 for reflection along the horizontal plane of the substrate 1. The cross-section of the grooves 31 is circular or rectangular. (Refer to...) Figure 3 The diagram here only shows a rectangle; the circle is not shown and does not affect the implementation of this utility model. The groove 31 structure reflects the incident heat radiation multiple times, and the wavy curved surface guides the reflection direction, improving heat resistance and reflectivity.
[0024] Meanwhile, the groove 31 has a diameter of 0.1~0.5mm and a depth of 0.05~0.2mm. This groove 31 structure can be made using a hot stamping process, which is existing technology and will not be described in detail here.
[0025] It should be noted that the through holes, electrode holes and air vents for installation in the protective plate pressing plate that penetrate the heat radiation reflective surface 3 and the heat insulation contact surface 2 are existing technologies. The groove 31 is designed to avoid these three holes so as not to affect the uniform arrangement of the groove 31 in the heat radiation reflective surface 3.
[0026] In some preferred embodiments, the heat-insulating contact surface 2 has a plurality of uniformly arranged support columns 20 along the horizontal plane of the substrate 1 for supporting the wave crest 4. The bottom surface of the support column 20 is at the same horizontal plane as the bottom of the wave trough 5 (i.e., the lowest point of the wave trough 5).
[0027] To enhance the stability of the protective plate pressing sheet above the insulation felt 6, several support columns 20 are installed at the crests 4 of the insulation contact surface 2, as shown in the figure. Figure 4 By having the support column 20 at the crest 4 contact the surface of the insulation felt 6, the stability of the installation of both is improved, the pressure of the trough 5 contacting the insulation felt 6 is shared, and the service life of the insulation felt 6 is extended; at the same time, it does not affect the generation of the insulation air layer, forming a stable insulation air layer with good insulation effect.
[0028] Example 3 To improve the reflection efficiency of the thermal radiation reflecting surface 3, a reflective coating 30 with a thickness of 20-50 μm is provided on the surface of the thermal radiation reflecting surface 3. The reflective coating 30 can be a high-purity, high-density ceramic coating, such as alumina, zirconium oxide, boron nitride, or a specific metal-ceramic coating; this coating provides a surface with high reflectivity and low absorptivity, which, in conjunction with the continuous wavy curved surface of the thermal radiation reflecting surface 3 and the groove 31 located at the crest 4, increases the effective reflection area and improves the reflection of thermal radiation. Meanwhile, the substrate 1 and the support column 20 are both made of carbon-carbon material.
[0029] The working principle of this utility model is as follows: (Refer to...) Figure 5The heat-insulating contact surface 2 of the protective plate press, with its trough 5 and support column 20 in contact with the heat-insulating felt 6, and the heat radiation reflective surface 3 located below the main heater, both surfaces have the same continuous wavy curved surface structure. During crystal pulling, when the heat radiation passes through the crest 4 and trough 5, it can effectively scatter and reflect the incident heat radiation back to the central area of the furnace heat field, rather than being absorbed and lost through heat conduction or absorbed by the furnace wall. Simultaneously, the groove 31 and reflective coating 30 increase the effective heat reflection area and improve the heat radiation reflection efficiency. The heat-insulating contact surface 2 reduces its actual contact area with the heat-insulating felt 6, thereby reducing heat conduction through the solid substrate 1; at the same time, it forms a heat-insulating air layer, hindering downward heat conduction and improving the heat insulation effect.
[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications, equivalent substitutions, and improvements made to the above embodiments based on the technical essence of the present utility model and within the spirit and principles of the present utility model shall still fall within the protection scope of the present utility model.
Claims
1. A protective disc press with high-efficiency heat reflection and heat insulation functions, characterized in that, The substrate (1) includes two substrates with the same wavy curved surface structure on both sides. The surface of the substrate (1) is a heat radiation reflective surface (3) facing the main heater. The bottom surface of the substrate (1) is a heat insulation contact surface (2) and is in contact with the heat insulation felt (6). The troughs (5) and peaks (4) of the heat radiation reflective surface (3) correspond one-to-one with the troughs (5) and peaks (4) of the heat insulation contact surface (2), and the spacing between the corresponding troughs (5) or peaks (4) is consistent.
2. The protective disc pressure plate with high-efficiency heat reflection and heat insulation function according to claim 1, characterized in that, The heat radiation reflective surface (3) has several uniformly arranged grooves (31) along the horizontal plane of the substrate (1) for reflection.
3. The protective disc pressure plate with high-efficiency heat reflection and heat insulation function according to claim 2, characterized in that, The cross-section of the groove (31) is circular or rectangular.
4. A protective disc press sheet with high-efficiency heat reflection and heat insulation functions according to claim 2, characterized in that, The groove (31) has a diameter of 0.1~0.5mm and a depth of 0.05~0.2mm.
5. A protective disc press sheet with high-efficiency heat reflection and heat insulation functions according to claim 2, characterized in that, The heat-insulating contact surface (2) has a number of uniformly arranged support columns (20) along the horizontal plane of the substrate (1) for support.
6. A protective disc press sheet with high-efficiency heat reflection and heat insulation functions according to claim 5, characterized in that, The bottom surface of the support column (20) is at the same level as the bottom of the trough (5).
7. A protective disc press sheet with high-efficiency heat reflection and heat insulation functions according to claim 5, characterized in that, The surface of the thermal radiation reflective surface (3) is provided with a reflective coating (30) with a thickness of 20~50μm.
8. A protective disc press sheet with high-efficiency heat reflection and heat insulation functions according to claim 5, characterized in that, The substrate (1) and the support column (20) are both made of carbon carbon material.