Air grid structure for improving stress of 1.6 mm ultrathin photovoltaic glass
By using sealed ball guiding airflow in the air grid structure of 1.6mm ultra-thin photovoltaic glass, the problems of airflow are solved, and the increase of glass stress and flatness guarantee in the tempering process are achieved.
Patent Information
- Application Number
- CN202421989194.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-15
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-08-15
AI Technical Summary
The prior art is difficult to achieve sufficient stress enhancement on 1.6mm ultra-thin photovoltaic glass, and the airflow unevenness and return air phenomenon are serious, resulting in the glass being easily bent and warped during tempering.
A air grating structure is adopted, including an overwind outer plate, an air net and a sealing ball. By setting a sealing ball at the ventilation hole to improve the uniformity and stability of the airflow. The sealing ball blocks the return air under the action of the airflow and guides the airflow to make it scattered, enhancing the air cooling effect of the glass plate.
The uniformity and stability of the airflow on the glass plate are improved, the airflow pressure is increased, the glass stress is increased, the return air phenomenon is avoided, and the flatness of the glass is ensured during the tempering process.
Smart Images
Figure CN223087749U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of photovoltaic glass processing, and relates to a wind grid structure for enhancing the stress of 1.6mm ultra-thin photovoltaic glass. Background Art
[0002] The development of photovoltaic glass towards "lightweight" is an irresistible trend. The 1.6mm photovoltaic glass is 20% thinner than the current mainstream 2.0mm, and has obvious advantages in weight and cost, and is also more in line with the requirements of light weight and high efficiency in the BIPV scenario. Therefore, the development of 1.6mm ultra-thin photovoltaic glass products can enrich the differentiated product structure of our company and meet the needs of customers.
[0003] Existing technical problems:
[0004] 1. Summarize the industry requirements for the stress of 1.6mm glass based on the requirements of various competitors and customers in the market: the average value ≥ 65 Mpa, and the range ≤ 15 Mpa.
[0005] 2. According to the existing process parameters and equipment conditions of our company, the average stress is below 65, which is difficult to meet the industry stress requirements.
[0006] There are mainly two methods in the industry to enhance the stress of glass. One is to increase the temperature, and the other is to increase the wind pressure. However, when the temperature is too high, the 1.6mm glass is more likely to be distorted in the furnace due to its thinness, resulting in problems such as bending, waviness, and warping. Therefore, only the wind pressure can be adjusted, that is, the glass is rapidly cooled by high-pressure air flow to increase the stress. However, at present, when the high-pressure air flow in the toughening furnace rapidly cools, there are problems such as uneven wind pressure and air return, resulting in a small upper limit of the wind pressure. Summary of the Utility Model
[0007] The purpose of the utility model is to provide a wind grid structure for enhancing the stress of 1.6mm ultra-thin photovoltaic glass in view of the above problems existing in the prior art. The technical problem to be solved by the utility model is how to improve the air flow uniformity and avoid air return.
[0008] The purpose of the utility model can be realized by the following technical solutions: A wind grid structure for enhancing the stress of 1.6mm ultra-thin photovoltaic glass, characterized in that it includes an air passing outer plate and a wind net. The inner side surface of the air passing outer plate has an outer frame, and the wind net is fixed on the outer frame. There is a gap between the wind net and the inner side surface of the air passing outer plate. The air passing outer plate is provided with a plurality of ventilation holes. The ventilation holes include a spherical surface part close to the inner side surface of the air passing outer plate and a gas guiding part close to the outer side surface of the air passing outer plate. A sealing ball corresponding to each ventilation hole is arranged between the wind net and the air passing outer plate. The spherical surface part is adapted to a partial spherical surface of the sealing ball, and the sealing ball is located between the wind net and the air passing outer plate.
[0009] Further, the sealing ball is made of rubber.
[0010] The advantage of this method is that the air flow entering the ventilation hole from the air guide part on the outer side of the air passing outer plate can act on the sealing ball above the air passing outer plate. The sealing ball moves upward under the action of the air flow and abuts against the lower surface of the air net. At this time, the air flow can pass through the ventilation hole and the air net, and then act on the glass plate above the air net, thereby realizing the air cooling of the glass plate. When there is a reverse air flow, the sealing ball can block the ventilation hole, thereby avoiding the situation of air return. In addition, due to the presence of the sealing ball, the air flow entering the air net through the ventilation hole is dispersed after being guided by the sealing ball. Therefore, when it passes through the air net, it is not a straight air flow but a multi-directional disordered air flow, greatly improving the uniformity of the air flow acting on the glass plate. Compared with the traditional air grille with a porous structure, the air flow stability and uniformity are higher, and the air flow check can also be realized; when tempering ultra-thin glass, the air flow pressure can be increased to improve the glass stress. Description of the Drawings
[0011] Figure 1 is a perspective view of the air grille structure.
[0012] Figure 2 is an exploded view of the air grille structure.
[0013] Figure 3 is a partial cross-sectional view of the air grille structure.
[0014] In the figure, 1 is the air passing outer plate; 2 is the air net; 3 is the outer frame; 4 is the ventilation hole; 41 is the spherical part; 42 is the air guide part; 5 is the sealing ball. Detailed Embodiments
[0015] The following are specific embodiments of the present invention and in combination with the drawings, the technical solutions of the present invention will be further described, but the present invention is not limited to these embodiments.
[0016] As Figures 1 to 3 shown in the air grille structure, it includes an air passing outer plate and an air net 2. The inner side surface of the air passing outer plate has an outer frame 3, and the air net 2 is fixed on the outer frame 3. There is a gap between the air net 2 and the inner side surface of the air passing outer plate. The air passing outer plate is provided with a plurality of ventilation holes 4. The ventilation holes 4 include a spherical part 41 close to the inner side surface of the air passing outer plate and an air guide part 42 close to the outer side surface of the air passing outer plate. A sealing ball 5 corresponding to each ventilation hole 4 one by one is arranged between the air net 2 and the air passing outer plate. The spherical part 41 is adapted to a part of the spherical surface of the sealing ball 5. The sealing ball 5 is located between the air net 2 and the air passing outer plate. The sealing ball 5 is made of rubber, and it may have a metal inner core as a counterweight inside.
[0017] The advantage of this method is that the airflow entering the ventilation hole 4 from the air guide part 42 on the outer side of the air passing outer plate can act on the sealing ball 5 above the air passing outer plate. The sealing ball 5 moves upward under the action of the airflow and abuts against the lower surface of the air grid 2. At this time, the airflow can pass through the ventilation hole 4 and the air grid 2, and then act on the glass plate above the air grid 2, thus realizing the air cooling of the glass plate. When there is a reverse airflow, the sealing ball 5 can block the ventilation hole 4, thus avoiding the situation of air return. In addition, due to the presence of the sealing ball 5, the airflow entering the air grid 2 through the ventilation hole 4 is scattered after being guided by the sealing ball 5. Therefore, when it passes through the air grid 2, it is not a straight airflow but a multi-directional disordered airflow, greatly improving the uniformity of the airflow acting on the glass plate. Compared with the traditional air grid with a porous structure, the airflow stability and uniformity are higher, and the air flow check can also be realized; when tempering ultra-thin glass, the air flow pressure can be increased to improve the glass stress.
[0018] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar methods for substitution, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.
Claims
1. A wind grid structure for enhancing the stress of 1.6 mm ultra-thin photovoltaic glass, characterized in that, It includes an air-passing outer plate and an air net (2). The inner side surface of the air-passing outer plate has an outer frame (3), and the air net (2) is fixed on the outer frame (3). There is a gap between the air net (2) and the inner side surface of the air-passing outer plate. A plurality of ventilation holes (4) are formed in the air-passing outer plate. The ventilation holes (4) include a spherical surface portion (41) close to the inner side surface of the air-passing outer plate and a gas guiding portion (42) close to the outer side surface of the air-passing outer plate. A sealing ball (5) corresponding to each ventilation hole (4) one by one is arranged between the air net (2) and the air-passing outer plate. The spherical surface portion (41) is adapted to a partial spherical surface of the sealing ball (5), and the sealing ball (5) is located between the air net (2) and the air-passing outer plate.
2. The air grid structure for enhancing the stress of 1.6 mm ultra-thin photovoltaic glass according to claim 1, characterized in that, The sealing ball (5) is made of rubber.