Heating device for substrate glass production
By using a fixing rod to fix the heating wire and setting a high-reflectivity layer in the heating device, the problems of small radiation area and easy melting of the heating wire are solved, achieving more efficient heating and a more stable production process.
Patent Information
- Application Number
- CN202422998103.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-05
- Publication Date
- 2026-01-06
- Estimated Expiration
- 2034-12-05
AI Technical Summary
Traditional heating devices have a small heating wire radiation area and are prone to melting, resulting in poor product quality and low production safety.
The heating wire is fixed with a fixed rod, and a high-reflectivity layer is set on the inside of the tank to ensure that the heating wire does not directly contact the furnace plate and the radiation angle is greater than 120°. Combined with the tank design with equal spacing, the heating uniformity is improved.
It improves heating efficiency and product quality, ensures production stability and safety, and avoids problems such as heating wire detachment and melting.
Smart Images
Figure CN223766254U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of substrate glass manufacturing technology, and specifically to a heating device for substrate glass production. Background Technology
[0002] Substrate glass is one of the key materials for flat panel display devices and the carrier of panel manufacturing processes. During use, it requires high flatness and thermal stability, especially with the development of high-generation, high-resolution display technologies, which place increasingly higher demands on the performance of substrate glass. Overflow-processed substrate glass holds an important market position due to its surface quality improvement without the need for secondary processing; however, its process control technology is extremely difficult. When molten glass overflows and coalesces at the tip, a reasonable temperature field distribution is needed to control quality during the glass's descent. Therefore, heating devices are required on both sides of the glass plate to compensate for the temperature difference during cooling. Traditional heating devices, due to structural defects, have a small radiation area for the heating wire during heating radiation, resulting in incomplete heating of the glass plate, affecting product quality and exhibiting low heating efficiency. Furthermore, long-term production carries the risk of heating wire melting and detachment, leading to poor safety performance and impacting production stability and product quality. Utility Model Content
[0003] The purpose of this utility model is to provide a heating device for substrate glass production, so as to solve the problems of poor product quality and poor production safety performance caused by the small heating radiation area of the heating wire and the melting of the heating wire in the prior art.
[0004] To solve the above problems, this utility model proposes a heating device for substrate glass production, and the technical solution adopted is as follows:
[0005] A heating device for substrate glass production includes: a heating furnace plate and multiple heating elements. Multiple grooves are provided on the side of the heating furnace plate near the glass plate. The grooves are arranged in an array along the height direction of the heating furnace plate and extend through the heating furnace plate along its length direction. The heating elements are disposed within the grooves along their length direction. Each heating element includes a fixing rod and a heating wire. The fixing rod is disposed within the groove along its length direction and is fixedly installed to the heating furnace plate. The heating wire is wound around the outer circumference of the fixing rod along its length direction, and the outer diameter of the heating wire is greater than the height of the groove in the thickness direction of the heating furnace plate. A high-reflectivity layer is provided on the inner surface of the groove, and a certain distance is maintained between the high-reflectivity layer and the outer diameter of the heating wire.
[0006] Furthermore, the thickness of the high-reflectivity layer is 1-1.2 mm.
[0007] Furthermore, the distance between the high reflectivity layer and the outer diameter of the heating wire is greater than or equal to 5 mm.
[0008] Furthermore, pressure strips are provided on both sides of the heating furnace plate along its length, and the pressure strips are arranged along the height direction of the heating furnace plate. The two ends of the fixing rod are fixedly connected to the pressure strips.
[0009] Furthermore, the tanks are arranged at equal intervals along the height direction of the heating furnace plate, so that the heating elements are arranged at equal intervals along the height direction of the heating furnace plate.
[0010] Furthermore, the heating wire has a circular spiral structure wound around the outer circumferential surface of the fixed rod.
[0011] Furthermore, the ratio of the diameter of the fixing rod to the inner diameter of the heating wire is (0.8~0.9):1.
[0012] Furthermore, the ratio of the height of the wire groove to the outer diameter of the heating wire is less than 0.5.
[0013] Furthermore, the cross-sectional structure of the groove is a semi-circle whose shape is adapted to the shape of the heating wire.
[0014] Furthermore, the fixing rod is made of a high-temperature resistant refractory material.
[0015] Beneficial Effects: This utility model is an improved utility model. By setting a fixed rod that is fixedly installed on the heating furnace plate, and winding the heating wire around the outer circumference of the fixed rod along its length, the heating wire is connected to the heating furnace plate through the fixed rod. This makes installation convenient and ensures long-term safe and reliable use. It solves the problems of heating wire melting and falling off during long-term production in existing heating devices, thus improving production stability and product quality. At the same time, in the thickness direction of the heating furnace plate, the outer diameter of the heating wire is greater than the height of the groove on the heating furnace plate. During use, the radiation angle of the heating wire relative to the glass plate is greater than 120°, ensuring complete heating of the glass plate and improving product quality and heating efficiency. Furthermore, a high-reflection layer is provided on the inner side of the groove, and a certain distance is provided between the high-reflection layer and the outer diameter of the heating wire, so that the heating wire does not directly contact the heating furnace plate, ensuring good reflection and heat dissipation effects.
[0016] The thickness of the high-reflectivity layer is 1-1.2 mm, which further improves the reflection and heat dissipation effects.
[0017] The distance between the high-reflectivity layer and the outer diameter of the heating wire is greater than or equal to 5mm, which further improves the reflection and heat dissipation effect.
[0018] The tanks are arranged at equal intervals along the height of the heating plate, ensuring uniform heating by arranging the heating elements at equal intervals along the height of the heating plate. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of a heating device for substrate glass production in the prior art;
[0020] Figure 2 This is a schematic diagram of the structure of a local heating unit in a heating device for substrate glass production in the prior art;
[0021] Figure 3 This is a schematic diagram of the ablation of the fixing wire in a heating device used for substrate glass production in the prior art;
[0022] Figure 4 This is a three-dimensional structural schematic diagram of the heating device for substrate glass production according to this utility model;
[0023] Figure 5 This is a front view of the structure of the heating device for substrate glass production according to this utility model.
[0024] Figure 6 This is a schematic diagram of the structure of a partial heating unit of the heating device for substrate glass production according to this utility model;
[0025] In the diagram, 1. Glass plate, 2. Thermal radiation zone, 3. Existing heating device, 31. Fixed furnace plate, 32. Spring wire, 33. Metal fixing wire, 34. Ablation, 35. Outer diameter of spring wire, 4. New heating device, 41. Heating furnace plate, 42. Heating wire, 43. Fixing rod, 44. Pressure strip, 45. Screw, 46. High reflectivity layer. Detailed Implementation
[0026] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.
[0027] As cited in the background section, existing heating devices suffer from poor product quality and safety due to the small heating radiation area of the heating wire and the risk of the heating wire melting. Specifically, for example... Figure 1 , 2As shown in Figure 3, the existing heating device 3 is distributed on both sides of the glass plate 1, and heats and compensates for the actual temperature difference of the glass plate 1. The existing heating device 3 includes a fixed furnace plate 31, a heating wire, and a metal fixing wire 33. In use, the heating wire is spring-shaped, i.e., spring wire 32, which is placed in the corresponding wire groove of the fixed furnace plate 31 and fixed by the metal fixing wire 33. When the spring wire 32 is energized and heated, the heating device on both sides of the glass plate 1 heats the corresponding area of the glass plate 1 through the heat radiation zone 2. However, in the existing heating device 3, since the spring wire 32 is placed directly in the wire groove and in contact with the bottom of the groove; at the same time, the groove height H1 is greater than the outer diameter 35 of the spring wire, the heating radiation angle of the spring wire 32 is within 90°, and the radiation area is small. In addition, during the heating process, the spring wire 32 will expand and deform due to heat, and some of the spring wire 32 will fall out of the wire groove, or the metal fixing wire 33 will loosen and melt due to arcing, and long-term high temperature will cause the metal fixing wire 33 to be ablated 34.
[0028] Therefore, based on the above reasons, this utility model provides a heating device for substrate glass production, including a heating furnace plate 41 and multiple heating elements. The heating furnace plate 41 is used to install the heating elements, which are used to heat the glass plate 1. Multiple grooves are provided on the side of the heating furnace plate 41 near the glass plate 1. The multiple grooves are arranged in an array along the height direction of the heating furnace plate 41, and the grooves extend through the heating furnace plate 41 along its length direction. The heating elements are arranged in the grooves along their length direction to accommodate them. Each heating element includes a fixing rod 43 and a heating wire 42. The fixing rod 43 is arranged in the groove along its length direction and is fixedly installed with the heating furnace plate 41 to fix the heating wire 42 in the heating furnace. On the heating plate 41, the heating wire 42 will not detach from the tank, ensuring safety, reliability, and stability during production. The heating wire 42 is wound around the outer circumference of the fixing rod 43 along its length. In the thickness direction of the heating plate 41, the outer diameter of the heating wire 42 is greater than the height of the tank, so that the radiation angle of the heating wire 42 relative to the glass plate 1 is greater than 120°. When heating the glass plate 1, the glass plate 1 is fully heated, improving product quality and heating efficiency. Furthermore, a high-reflection layer is provided on the inner side of the tank, and a certain distance is provided between the high-reflection layer 46 and the outer diameter of the heating wire 42, so that the heating wire 42 does not directly contact the heating plate 41, ensuring good reflection and heat dissipation effects.
[0029] Specific embodiment 1 of the heating device for substrate glass production of this utility model:
[0030] In this embodiment, as Figure 4 , 5As shown in Figure 6, the heating device for substrate glass production is a novel heating device 4, which includes a heating furnace plate 41 and multiple heating elements. Multiple grooves are provided on the side of the heating furnace plate 41 near the glass plate 1. The multiple grooves are arranged in an array along the height direction of the heating furnace plate 41, and the grooves extend through the heating furnace plate 41 along its length direction. The heating elements are disposed in the grooves along their length direction. Each heating element includes a fixing rod 43 and a heating wire 42. The fixing rod 43 is disposed in the groove along its length direction and is fixedly installed with the heating furnace plate 41. The fixing rod 43 is used for fixing and installing the heating wire 42, and its material is a high-temperature resistant refractory material. The heating wire 42 is wound around the outer circumference of the fixing rod 43 along its length direction, and in the thickness direction of the heating furnace plate 41, the outer diameter of the heating wire 42 is greater than the height H2 of the groove. In use, after the heating wire 42 is energized and heated, the radiation angle α of the heating wire 42 relative to the glass plate 1 is greater than 120°, and the heating wire 42 is stably mounted on the fixing rod 43. A high-reflectivity layer 46 is provided on the inner side of the tank, and a certain distance is provided between the high-reflectivity layer 46 and the outer diameter of the heating wire 42, so that the heating wire 42 does not directly contact the heating furnace plate 41, which can ensure good reflection and heat dissipation effects. When the heating wire 42 is energized and heats up, the heating purpose of the glass plate 1 area is achieved through the heat reflection of the high-reflectivity layer 46 and the heat radiation of the exposed part. At the same time, the heating wire 42 does not directly contact the heating furnace plate 41, and it does not require additional metal materials for fixation, ensuring good insulation and heat dissipation under energized conditions, and can be used safely for a long time. The thickness of the high-reflectivity layer 46 is 1-1.2mm, and the distance between the high-reflectivity layer 46 and the outer diameter of the heating wire 42 is greater than or equal to 5mm. Specifically, the thickness of the high-reflectivity layer 46 is 1mm, and the distance between the high-reflectivity layer 46 and the outer diameter of the heating wire 42 is 5mm.
[0031] In other embodiments, the thickness of the high reflectivity layer 46 is 1.2 mm, and the distance between the high reflectivity layer 46 and the outer diameter of the heating wire 42 is 7 mm.
[0032] In this embodiment, the heating wire 42 has a circular spiral structure wound around the outer circumference of the fixing rod 43, and the cross-sectional structure of the groove is a semi-circle that matches the shape of the heating wire 42. The ratio of the diameter of the fixing rod 43 to the inner diameter of the heating wire 42 is (0.8~0.9):1; the ratio of the height H2 of the groove to the outer diameter of the heating wire 42 is less than 0.5. Specifically, the ratio of the diameter of the fixing rod 43 to the inner diameter of the heating wire 42 is 0.8:1; the ratio of the height H2 of the groove to the outer diameter of the heating wire 42 is 0.4.
[0033] In other embodiments, the heating wire 42 is an elliptical spiral structure wound around the outer circumferential surface of the fixing rod 43, and the cross-sectional structure of the groove is an ellipse that matches the shape of the heating wire 42.
[0034] In other embodiments, the ratio of the diameter of the fixing rod 43 to the inner diameter of the heating wire 42 is 0.9:1; the ratio of the height H2 of the wire groove to the outer diameter of the heating wire 42 is 0.2.
[0035] Specific embodiment 2 of the heating device for substrate glass production of this utility model:
[0036] Based on the above-described technical concept of this utility model, or based on the specific embodiments of this utility model described above, another embodiment is provided below.
[0037] In this embodiment, as Figure 1 As shown, pressure strips 44 are provided on both sides of the heating furnace plate 41 along its length, and the pressure strips 44 are arranged along the height direction of the heating furnace plate 41. The two ends of the fixing rod 43 are fixedly connected to the pressure strips 44. The pressure strips 44 are fixedly installed on the heating furnace plate 41 by screws 45; the pressure strips 44 are provided with mounting holes corresponding to the fixing rods 43, and the two ends of the fixing rods 43 are installed in the corresponding mounting holes.
[0038] The tanks can be arranged at unequal intervals along the height direction of the heating furnace plate 41. At this time, the heating elements are also arranged at unequal intervals along the height direction of the heating furnace plate 41. This may cause uneven heating of the heating wires 42 when heating the glass plate 1. Therefore, in this embodiment, it is preferable that the tanks are arranged at equal intervals along the height direction of the heating furnace plate 41, so that the heating elements are arranged at equal intervals along the height direction of the heating furnace plate 41, ensuring the uniformity of heating of the heating wires 42 when heating the glass plate 1.
[0039] The specific installation method of the heating device for substrate glass production of this utility model is as follows:
[0040] First, the fixing rod 43 passes through the heating wire 42, and at the same time, both ends of the fixing rod 43 are inserted into the corresponding mounting holes of the pressure strip 44; then, the pressure strip 44 is fixed to the heating furnace plate 41 by screws 45; finally, the assembled heating device is symmetrically placed on both sides of the glass plate 1, and the heating wire 42 is powered on.
[0041] From the above description of specific embodiments of the heating device for substrate glass production of this utility model, it can be seen that the heating device for substrate glass production of this utility model includes a heating furnace plate 41 and multiple heating elements. The heating furnace plate 41 is used to install the heating elements, and the heating elements are used to heat the glass plate 1. Multiple grooves are provided on the side of the heating furnace plate 41 near the glass plate 1. The multiple grooves are arranged in an array along the height direction of the heating furnace plate 41, and the grooves penetrate the heating furnace plate 41 along its length direction. The heating elements are arranged in the grooves along their length direction for accommodating the heating elements. Each heating element includes a fixing rod 43 and a heating wire 42. The fixing rod 43 is arranged in the groove along its length direction and is fixedly installed with the heating furnace plate 41 for heating the glass plate 1. The heating wire 42 is fixedly installed on the chassis, preventing it from detaching from the tank and ensuring safety, reliability, and stability during production. The heating wire 42 is wound around the outer circumference of the fixing rod 43 along its length, and its outer diameter is greater than the height of the tank in the thickness direction of the heating plate 41. This results in a radiation angle α of the heating wire 42 relative to the glass plate 1 that is greater than 120°, ensuring complete heating of the glass plate 1, improving product quality, and increasing heating efficiency. Furthermore, a high-reflectivity layer 46 is provided on the inner side of the tank, and a certain distance is maintained between the high-reflectivity layer 46 and the outer diameter of the heating wire 42, preventing direct contact between the heating wire 42 and the heating plate 41, thus ensuring good reflection and heat dissipation.
[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. The patent protection scope of the present utility model shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present utility model shall also be included in the protection scope of the present utility model.
Claims
1. A heating device for producing a substrate glass, characterized by, The application relates to a heating furnace plate (41) and a plurality of heating elements, wherein a plurality of grooves are arranged on the heating furnace plate (41) near one side of a glass plate (1), the grooves are arranged in an array along the height direction of the heating furnace plate (41), and the grooves penetrate the heating furnace plate (41) along the length direction of the heating furnace plate (41), and the heating elements are arranged in the grooves along the length direction of the grooves; the heating element comprises a fixed rod (43) and a heating wire (42), the fixed rod (43) is arranged in the groove along the length direction of the groove and is fixedly installed on the heating furnace plate (41); the heating wire (42) is arranged on the outer circumferential surface of the fixed rod (43) along the length direction of the fixed rod (43), and the outer diameter of the heating wire (42) is greater than the height of the groove in the thickness direction of the heating furnace plate (41); a high-reflection layer (46) is arranged on the inner side of the groove, and a certain distance is arranged between the high-reflection layer (46) and the outer diameter of the heating wire (42). The thickness of the high-reflection layer (46) is 1-1.2 mm.
2. The heating device for producing a substrate glass according to claim 1, characterized by The distance between the high-reflection layer (46) and the outer diameter of the heating wire (42) is greater than or equal to 5 mm.
3. The heating device for producing a substrate glass according to claim 2, wherein In the length direction of the heating furnace plate (41), pressing strips (44) are arranged at the positions of the two sides of the heating furnace plate (41), and the pressing strips (44) are arranged along the height direction of the heating furnace plate (41), and the two ends of the fixed rod (43) are fixedly connected with the pressing strips (44).
4. The heating device for producing a substrate glass according to claim 1, wherein The grooves are arranged at equal intervals along the height direction of the heating furnace plate (41), so that the heating elements are arranged at equal intervals along the height direction of the heating furnace plate (41).
5. The heating device for producing a substrate glass according to claim 1, wherein The structure of the heating wire (42) is a circular spiral structure arranged on the outer circumferential surface of the fixed rod (43).
6. The heating device for producing a substrate glass according to claim 1, wherein The ratio of the diameter of the fixed rod (43) to the inner diameter of the heating wire (42) is (0.8-0.9):
1.
7. The heating device for producing a substrate glass according to claim 6, wherein The ratio of the height of the groove to the outer diameter of the heating wire (42) is less than 0.
5.
8. The heating device for producing a substrate glass according to claim 7, wherein The cross section of the groove is a semicircle which is matched with the shape of the heating wire (42).
9. The heating device for producing a substrate glass according to claim 8, wherein The material of the fixed rod (43) is high-temperature-resistant refractory material.
10. The heating device for producing a substrate glass according to any one of claims 1 to 9, characterized by