Toughening furnace waste heat utilization structure and method

Abstract

The invention relates to the technical field of photovoltaic glass production, in particular to a tempering furnace waste heat utilization structure and method. The toughening furnace waste heat utilization structure comprises a cooling partition room and a toughening fan room, a first air exhaust device and a second air exhaust device are arranged on the cooling partition room, the first air exhaust device is communicated with the atmosphere, the second air exhaust device is communicated with the deep processing workshop, a toughening furnace is arranged in the cooling partition room, a cooling fan is arranged in the toughening fan room, and the cooling fan is communicated with the toughening furnace. One end of the air pipe is positioned in the toughening fan room and is over against the cooling fan, and the other end of the air pipe is positioned in the cooling partition room and is over against the cooling area of the toughening furnace. The waste heat utilization structure of the toughening furnace is adopted in the waste heat utilization method of the toughening furnace. The toughening furnace waste heat utilization structure and method can utilize the toughening furnace waste heat to increase the temperature of a deep processing workshop.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic glass production technology, and in particular to a structure for utilizing waste heat from a tempering furnace, and a method for utilizing waste heat from a tempering furnace using this structure. Background Technology

[0002] In recent years, with the rapid development of the solar energy cluster industry, photovoltaic deep-processed glass has also gained popularity among many customers due to the booming development of crystalline silicon cells and its own high added value. The production of photovoltaic deep-processed glass involves a variety of processing equipment, with tempering furnaces being the primary representative. Tempering furnaces heat the glass, and the heated glass is then rapidly cooled in a cooling zone, causing the glass to exhibit significant tensile stress, which in turn generates compressive stress across the entire surface, achieving glass tempering. However, 95% of the heat in the tempering furnace is carried away by the glass. This heat is then blown away by cooling air in the cooling zone, forming hot air at around 230°C that is directly discharged into the atmosphere, resulting in energy waste.

[0003] In northern my country and some cold regions abroad, some equipment in deep-processing workshops malfunctions due to low temperatures during winter, requiring companies to incur additional costs for equipment heating, thus increasing the overall cost of photovoltaic deep-processed glass. Statistics show that during continuous production, approximately 1 kW / h of energy is transferred from the tempering furnace to the cooling zone. Therefore, utilizing this waste heat for heating the equipment in deep-processing workshops has become a pressing issue. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a structure and method for utilizing the waste heat of a tempering furnace to increase the temperature of a deep processing workshop.

[0005] The present invention adopts the following technical solution:

[0006] This invention provides a structure for utilizing waste heat from a tempering furnace, including a cooling partition room and a tempering fan room. The cooling partition room is equipped with a first exhaust device and a second exhaust device. The first exhaust device is connected to the atmosphere, and the second exhaust device is connected to the deep processing workshop. The tempering furnace is located in the cooling partition room, and a cooling fan is installed in the tempering fan room. One end of the air duct is located in the tempering fan room and faces the cooling fan, while the other end of the air duct is located in the cooling partition room and faces the cooling area of ​​the tempering furnace.

[0007] Preferably, sound insulation layers are provided on the inner walls of the cooling partition and at the opening and closing points.

[0008] Preferably, the first exhaust fan is installed on the top wall of the cooling partition, and the second exhaust fan is installed on the side wall of the cooling partition near the top, and the side wall where the second exhaust fan is located is shared with one side wall of the deep processing workshop.

[0009] Preferably, the tempered air blower room is located on one side of the cooling partition room, and one side wall of the tempered air blower room is shared with one side wall of the cooling partition room.

[0010] Preferably, both the first and second exhaust ventilation devices are ventilators.

[0011] Preferably, two tempering furnaces are arranged side by side in the cooling partition room, and two tempering fan rooms are arranged. The cooling fans in each tempering fan room send air to the cooling area of ​​one tempering furnace through air ducts.

[0012] The present invention also provides a method for utilizing waste heat from a tempering furnace, which employs the above-mentioned waste heat utilization structure from a tempering furnace and includes the following steps:

[0013] S1: Start the tempering furnace in the cooling partition room and the cooling fan in the tempering fan room to carry out glass tempering operations;

[0014] S2: If the current season is winter, turn off the first exhaust fan and turn on the second exhaust fan. The second exhaust fan will exhaust the air with residual heat in the cooling partition to the deep processing workshop for heating. If the current season is other seasons, proceed to step S3.

[0015] S3: Close the second exhaust fan and open the first exhaust fan. The first exhaust fan will directly discharge the air with residual heat in the cooling partition to the atmosphere for heat dissipation.

[0016] Preferably, in steps S2 and S3, the air intake and exhaust volumes in the cooling partition are equal.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] In the waste heat utilization structure of the tempering furnace of the present invention, high-temperature air is generated in the cooling partition due to glass tempering. This high-temperature air can be discharged to the atmosphere through a first exhaust device or to the deep processing workshop through a second exhaust device. Therefore, when the equipment in the deep processing workshop is working normally, the high-temperature air in the cooling partition is discharged by the first exhaust device for heat dissipation. When the temperature in the deep processing workshop is too low and the equipment cannot work, the high-temperature air in the cooling partition is discharged by the second exhaust device to the deep processing workshop for heating. This avoids the waste heat of the tempering furnace, reduces the cost of photovoltaic deep-processed glass, and saves energy.

[0019] The waste heat utilization method of the tempering furnace of the present invention naturally possesses the above-mentioned beneficial effects due to the adoption of the above-mentioned waste heat utilization structure of the tempering furnace, which will not be elaborated further here. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the waste heat utilization structure of the tempering furnace in an embodiment of the present invention.

[0021] The reference numerals in the attached figures are explained as follows:

[0022] 1. Cooling partition room; 2. Tempering fan room; 3. First exhaust fan; 4. Second exhaust fan; 5. Tempering furnace. Detailed Implementation

[0023] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. These embodiments are for illustrative purposes only and are not intended to limit the scope of the invention.

[0024] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 invention according to the specific circumstances.

[0026] Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0027] See Figure 1This embodiment provides a structure for utilizing waste heat from a tempering furnace, including a cooling partition 1 and a tempering fan room 2. The cooling partition 1 is equipped with a first exhaust device 3 and a second exhaust device 4. The first exhaust device 3 is connected to the atmosphere, and the second exhaust device 4 is connected to the deep processing workshop. The tempering furnace 5 is located in the cooling partition 1, and a cooling fan is installed in the tempering fan room 2. One end of the air duct is located in the tempering fan room 2 and faces the cooling fan, while the other end of the air duct is located in the cooling partition 1 and faces the cooling area of ​​the tempering furnace 5.

[0028] In the waste heat utilization structure of the tempering furnace in this embodiment, high-temperature air is generated in the cooling partition 1 due to glass tempering. This high-temperature air can be discharged to the atmosphere through the first exhaust device 3 or discharged to the deep processing workshop through the second exhaust device 4. Therefore, when the equipment in the deep processing workshop can operate normally, the high-temperature air in the cooling partition 1 is discharged by the first exhaust device 3 for heat dissipation. When the temperature in the deep processing workshop is too low and the equipment cannot operate, the high-temperature air in the cooling partition 1 is discharged by the second exhaust device 4 to the deep processing workshop for heating. This avoids the waste heat of the tempering furnace 5, reduces the cost of photovoltaic deep-processed glass, and saves energy.

[0029] It should be noted that the cooling fan delivers cooling air to the cooling zone of the tempering furnace 5 through the air duct, so that the heated glass can be cooled quickly in the cooling zone to complete the tempering process; and the cooling fan is not set in the cooling partition room 1, but in the tempering fan room 2, which can avoid the influence of high temperature air on the cooling fan and ensure the normal operation of the cooling fan.

[0030] Preferably, sound insulation layers are provided on the inner walls of the cooling partition 1 in all directions and at the opening and closing points of the doors. Since the glass tempering is completed inside the cooling partition 1, the noise level inside the cooling partition 1 is relatively high. The presence of sound insulation layers can prevent the noise inside the cooling partition 1 from affecting the work of people outside.

[0031] Preferably, in this embodiment, the sound insulation layer is composed of sound insulation felt.

[0032] Preferably, see Figure 1 The first exhaust fan 3 is installed on the top wall of the cooling partition 1, and the second exhaust fan 4 is installed on the side wall of the cooling partition 1 near the top. The side wall where the second exhaust fan 4 of the cooling partition 1 is located is shared with one side wall of the deep processing workshop.

[0033] Since hot air naturally rises and accumulates in the top space of the cooling partition 1, the placement of the first exhaust device 3 and the second exhaust device 4 is conducive to efficiently exhausting the hot air in the cooling partition 1. In addition, the second exhaust device 4 is located on the side wall of the cooling partition 1 near the top, so that the hot air enters from the top of the deep processing workshop, avoiding direct impact on the equipment in the deep processing workshop and ensuring equipment safety.

[0034] Preferably, see Figure 1 The tempered fan room 2 is located on one side of the cooling partition room 1, and one side wall of the tempered fan room 2 is shared with one side wall of the cooling partition room 1, thus making the factory layout more compact.

[0035] Better, see Figure 1 In this embodiment, both the cooling partition room 1 and the tempered fan room 2 are partitioned within the factory building, and the top wall of the cooling partition room 1 is the top wall of the factory building.

[0036] Preferably, both the first exhaust device 3 and the second exhaust device 4 are ventilators.

[0037] Preferably, see Figure 1 Two tempering furnaces 5 are arranged side by side in the cooling partition room 1. There are two tempering fan rooms 2. The cooling fans in each tempering fan room 2 send air to the cooling area of ​​one tempering furnace 5 through the air duct.

[0038] This embodiment also provides a method for utilizing waste heat from a tempering furnace. See [link to relevant documentation]. Figure 1 The above-mentioned waste heat utilization structure for tempering furnace is adopted, and includes the following steps:

[0039] S1: Start the tempering furnace 5 in the cooling partition room 1 and the cooling fan in the tempering fan room 2 to carry out glass tempering operations;

[0040] S2: If the current season is winter, turn off the first exhaust device 3 and turn on the second exhaust device 4. The second exhaust device 4 will exhaust the air with residual heat in the cooling partition 1 to the deep processing workshop for heating. If the current season is other seasons, proceed to step S3.

[0041] S3: Close the second exhaust device 4 and open the first exhaust device 3. The first exhaust device 3 will directly discharge the air with residual heat in the cooling partition 1 to the atmosphere for heat dissipation.

[0042] This waste heat utilization method for tempering furnaces can directly use the large amount of low-temperature waste heat from the cooling zone of tempering furnace 5 for winter heating in the deep processing workshop, thereby reducing the company's investment costs and saving energy.

[0043] Preferably, in steps S2 and S3, the air intake and exhaust volumes of the cooling partition 1 are equal to ensure smooth airflow within the cooling partition 1, so that the cold air generated by the cooling fan can be accurately delivered to the cooling zone of the tempering furnace 5, ensuring the glass tempering effect.

[0044] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A structure for utilizing waste heat from a tempering furnace, characterized in that, It includes a cooling partition room (1) and a tempering fan room (2). The cooling partition room (1) is equipped with a first exhaust device (3) and a second exhaust device (4). The first exhaust device (3) is connected to the atmosphere, and the second exhaust device (4) is connected to the deep processing workshop. The tempering furnace (5) is located in the cooling partition room (1). The tempering fan room (2) is equipped with a cooling fan. One end of the air duct is located in the tempering fan room (2) and faces the cooling fan. The other end of the air duct is located in the cooling partition room (1) and faces the cooling area of ​​the tempering furnace (5).

2. The waste heat utilization structure of the tempering furnace according to claim 1, characterized in that, The cooling partition (1) is equipped with sound insulation layers on all inner walls and at the opening and closing points.

3. The waste heat utilization structure of the tempering furnace according to claim 1, characterized in that, The first exhaust device (3) is installed on the top wall of the cooling partition (1), and the second exhaust device (4) is installed on the side wall of the cooling partition (1) near the top. The side wall where the second exhaust device (4) of the cooling partition (1) is located is shared with one side wall of the deep processing workshop.

4. The waste heat utilization structure of the tempering furnace according to claim 1, characterized in that, The tempered fan room (2) is located on one side of the cooling partition room (1), and one side wall of the tempered fan room (2) is shared with one side wall of the cooling partition room (1).

5. The waste heat utilization structure of the tempering furnace according to claim 1, characterized in that, Both the first exhaust device (3) and the second exhaust device (4) are ventilators.

6. The waste heat utilization structure of the tempering furnace according to claim 1, characterized in that, Two tempering furnaces (5) are arranged side by side in the cooling partition room (1). There are two tempering fan rooms (2). The cooling fans in each tempering fan room (2) send air to the cooling area of ​​one tempering furnace (5) through the air duct.

7. A method for utilizing waste heat from a tempering furnace, characterized in that, The tempering furnace waste heat utilization structure according to any one of claims 1-6 is adopted, and includes the following steps: S1: Start the tempering furnace (5) in the cooling partition room (1) and the cooling fan in the tempering fan room (2) to carry out glass tempering operations; S2: If the current season is winter, then close the first exhaust device (3) and open the second exhaust device (4). The second exhaust device (4) will exhaust the air with residual heat in the cooling partition (1) to the deep processing workshop for heating. If the current season is other seasons, then execute step S3. S3: Close the second exhaust device (4) and open the first exhaust device (3). The first exhaust device (3) will directly discharge the air with residual heat in the cooling partition (1) to the atmosphere for heat dissipation.

8. The method for utilizing waste heat from a tempering furnace according to claim 7, characterized in that, In steps S2 and S3, the air intake and exhaust volume of the cooling partition (1) are equal.

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