Glass annealing kiln and glass annealing kiln system

Abstract

The invention discloses a glass annealing kiln and a glass annealing kiln system, the glass annealing kiln comprises a kiln body, a heat exchange pipeline, a heating pipe, a heat exchanger body, a cooling pipe, a heat exchange station, a third pipeline, a reversing valve and a first circulating pump; a channel is formed in the kiln body, a heat exchange pipeline is arranged above and / or below the channel, and a heat exchange part of the heat exchange pipeline directly faces the channel; the heating pipe, the cooling pipe and the third pipeline are connected through a reversing valve, the other end of the heating pipe is communicated with one end of the heat exchange pipeline, the other end of the cooling pipe is communicated with the other end of the heat exchange pipeline, and the heating pipe is provided with a heat exchanger body and a first circulating pump; the node is located between the first circulating pump and the heat exchanger body. The invention has the beneficial effects that electric heating and external fan heat dissipation in the prior art are abandoned, and the problem of energy waste is solved on the basis of ensuring the cooling and heating efficiency of the kiln body.

Description

Technical Field

[0001] This invention relates to the field of glass production technology, and more particularly to glass annealing furnaces and glass annealing furnace systems. Background Technology

[0002] Glass annealing is a key process in glass production, aiming to eliminate internal stresses generated during the glass forming process, thereby improving its optical uniformity, mechanical strength, and thermal stability. Traditional glass annealing furnaces typically use electric heating radiant tubes or gas heating methods, and are equipped with complex external air-cooling systems (including fans, air ducts, heat exchangers, etc.) for temperature regulation.

[0003] Chinese patent document CN207096844U discloses a zoned temperature control device for the heating section of a float glass crystallization annealing kiln, including a kiln frame, kiln walls, kiln top and kiln bottom, an electric heating component installed inside the annealing kiln, and a temperature control unit. The temperature control unit consists of an electric heating component, a temperature sensor, a temperature controller and a solid-state relay. The temperature is adjusted by the electric heating component to meet the requirements of float glass for temperature uniformity inside the kiln.

[0004] However, electric heating consumes a huge amount of energy and has high operating costs; gas heating, on the other hand, poses pollution emission problems. Secondly, air-cooled systems relying on air convection heat exchange have low temperature control accuracy and slow response, making it difficult to achieve precise annealing curves and easily leading to unstable annealing quality. Thirdly, the system structure is complex, occupies a large area, and has high initial investment and maintenance costs. Finally, a large amount of waste heat generated during the annealing process is not effectively utilized and is directly emitted into the atmosphere, resulting in energy waste.

[0005] The information disclosed in this background section is intended only to enhance the understanding of the overall background of the invention and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Summary of the Invention

[0006] The technical problem to be solved by this invention is to solve the problem of energy waste while ensuring the cooling and heating efficiency of the kiln body.

[0007] The present invention solves the above-mentioned technical problems through the following technical means: This invention claims protection for a glass annealing furnace, comprising a furnace body, heat exchange pipelines, heating pipes, a heat exchanger body, cooling pipes, a heat exchange station, a third pipeline, a reversing valve, and a first circulating pump; a channel is formed within the furnace body, and heat exchange pipelines are arranged on and / or below the channel, with the heat exchange section of the heat exchange pipelines facing the channel; the heating pipes, cooling pipes, and the third pipeline are connected by a reversing valve, with one end of the heating pipe connected to one end of the heat exchange pipeline, and the other end of the cooling pipe connected to the other end of the heat exchange pipeline; a heat exchanger body and the first circulating pump are installed on the heating pipes, the cooling pipes flow through the heat exchange station, and the other end of the third pipeline is connected to a node of the first pipeline, the node being located between the first circulating pump and the heat exchanger body.

[0008] This invention abandons the electric heating and external fan cooling methods of existing technologies. During the heating process, it utilizes the residual heat of the kiln itself as the main heat source. During cooling, it eliminates the need for a large fan system, gas pipelines, or resistance bands, and utilizes the heat exchange station built into the annealing kiln system itself. The whole process has three advantages: First, the heat exchange efficiency of liquid refrigerant is much higher than that of air. Due to the large heat capacity and fast heat conduction of liquid medium, the overall heating and cooling response speed is significantly improved. In other words, whether cooling or heating, its efficiency is higher than that of existing fan and electric heating technologies.

[0009] Secondly, by not introducing excessive additional energy and equipment, and improving cooling and heating efficiency, energy consumption and operating costs are significantly reduced; moreover, pollution is low, which meets the core requirements of sustainable development.

[0010] Finally, heating and cooling are no longer considered separate components. Instead, although they are controlled independently in terms of working principle, they share components such as heat exchange pipelines and the first circulation pump in terms of structure. This not only makes the structure more compact and orderly, but also reduces the number of failure points and lowers maintenance costs.

[0011] Preferably, the heat exchange pipeline includes an inlet main pipe, heat exchange mechanisms, and an outlet main pipe. Both the inlet main pipe and the outlet main pipe enter the kiln body and are arranged along the length of the kiln body. Several heat exchange mechanisms are evenly arranged in the kiln body along the length of the inlet main pipe. The heat exchange mechanisms are configured to allow passageways to pass through. One end of the heat exchange mechanism is connected to the inlet main pipe, and the other end of the heat exchange mechanism is connected to the outlet main pipe.

[0012] Preferably, the heat exchange mechanism includes a first upper main pipe, a second upper main pipe, a first lower main pipe, a second lower main pipe, an upper heat exchange unit, a lower heat exchange unit, connecting pipes, and a first control valve. The first upper main pipe, the first lower main pipe, the second upper main pipe, and the second lower main pipe are respectively installed on the upper and lower sides of the kiln body. The input main pipe is connected to the first upper main pipe, the first upper main pipe is connected to the input end of the upper heat exchange unit, the output end of the upper heat exchange unit is connected to the second upper main pipe, the second upper main pipe is connected to the second lower main pipe through connecting pipes, the second lower main pipe is connected to the input end of the lower heat exchange unit, the output end of the lower heat exchange unit is connected to the first lower main pipe, and the first lower main pipe is connected to the output main pipe.

[0013] Preferably, the upper heat exchange unit includes a first flow tube, a first flexible hose, a second control valve, a heat exchanger body, a second flexible hose, and a second flow tube. Several rows of heat exchanger bodies are arranged above the channel, wherein the heat exchanger bodies constitute the heat exchange section of the heat exchange pipeline. The first flow tube and the second flow tube are parallel to the wide side of the kiln body. The main pipeline on the first plate is connected to the first flow tube to form the input end of the upper heat exchange unit. The first flow tube is connected to one end of the heat exchanger body through the first flexible hose. A second control valve is installed on each of the first flexible hoses. The other end of the heat exchanger body is connected to the second flow tube through the second flexible hose. The second flow tube is connected to the main pipeline on the second plate to form the output end of the upper heat exchange unit.

[0014] Preferably, the upper heat exchange unit also includes a lifting platform, and several lifting platforms are installed inside the kiln. The lifting platforms are configured to adjust the height of the corresponding heat exchanger body from the channel.

[0015] It is also worth mentioning that the kiln body is divided into several heat exchange zones along both the length and width directions. For example, several heat exchange mechanisms are formed along the length direction, and further, three rows of heat exchanger bodies are mounted on the first support along the width direction, which are raised and lowered by corresponding elevators. This means that the heat exchange zones inside the kiln are independent of each other. During use, the lifting height of the elevator and the flow control of the second control valve can be adjusted according to different heat exchange requirements. At the same time, it can provide the required annealing environment for two or more different types of glass, such as ultra-clear glass, ordinary float glass, or glass strips of different thicknesses, greatly improving production flexibility and equipment utilization.

[0016] Preferably, the upper heat exchange unit and the lower heat exchange unit have the same structure.

[0017] Preferably, a first control valve is installed on the connecting pipe.

[0018] The first control valve is used to control the flow rate of refrigerant entering the lower heat exchange unit.

[0019] Preferably, the heat exchange mechanism also includes an emergency pipeline, and the main pipeline below the first plate and the main pipeline above the first plate are connected through the emergency pipeline, and an emergency gate valve is installed on the emergency pipeline.

[0020] The emergency gate valve is a gate valve, which is normally closed and does not participate in the flow. When a special situation occurs in the kiln where the refrigerant does not need to flow in, but the refrigerant still needs to flow, the emergency gate valve opens, allowing the refrigerant to flow directly from the main pipe on the first plate to the main pipe below the first plate, without entering the heat exchanger body.

[0021] Preferably, it also includes a refrigerant return manifold, with a refrigerant return manifold installed on the cooling pipe.

[0022] The refrigerant return manifold is used to collect the liquid refrigerant returning inside the kiln, and the heat exchange station is connected to the output manifold.

[0023] The present invention also claims protection for a glass annealing furnace system using a glass annealing furnace, including a glass annealing furnace system, sensors, a control module and a central control unit, wherein the second control valve, the reversing valve and the first control valve are all solenoid valves, and sensors are installed inside the furnace to detect the working condition information inside the furnace and output the working condition information to the control module. The control module is used to receive and integrate information and transmit it to the central control unit; The central control unit is used to receive information and control the opening and closing of the solenoid valve, auxiliary heat exchanger and first circulation pump.

[0024] The central control unit can store and recall countless annealing process recipes. Based on the requirements of different annealing process recipes, and combined with the input of refrigerant temperature, flow rate and pressure information, the solenoid valves can be opened and closed to achieve automated control. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the glass annealing furnace in Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the heat exchange mechanism in Embodiment 1 of the present invention; Figure 3 This is a left perspective view of the heat exchange mechanism in Embodiment 1 of the present invention; Figure 4 This is a schematic diagram of the heat exchange mechanism in Embodiment 1 of the present invention, excluding the support frame and the elevator; Figure 5 This is a schematic diagram of the heat exchange mechanism in Embodiment 1 of the present invention, excluding the heat exchanger body, the support, and the elevator; Figure 6 This is a schematic diagram of the glass annealing furnace system in Embodiment 2 of the present invention; Figure 7 This is a schematic diagram of the control module in Embodiment 2 of the present invention; 10. Auxiliary heat exchanger; 11. First pipeline; 12. First circulating pump; 13. Inlet main pipe; 14. Second pipeline; 15. Reversing valve; 16. Third pipeline; 17. Fourth pipeline; 18. Heat exchange station; 19. Fifth pipeline; 20. Refrigerant return manifold; 21. Outlet main pipe; 23. Heat exchange mechanism; 230. Main pipeline on the first plate; 231. Main pipeline on the second plate; 232. Main pipeline below the first plate; 233. Main pipeline below the second plate; 234. Upper heat exchange unit; 2340. First flow tube; 2341. First flexible hose; 2342. Second control valve; 2343. Heat exchanger body; 2344. Second flexible hose; 2345. Second flow tube; 2346. First support; 2347. Second support; 2348. Elevator; 235. Lower heat exchange unit; 236. Emergency piping; 237. Emergency gate valve; 238. Connecting pipe; 239. First control valve; 3. First temperature sensor; 4. Third bracket; 5. Control module; 50. Sixth pipeline; 51. Seventh pipeline; 52. Eighth pipeline; 53. Radiator; 54. Pressure sensor; 55. Second temperature sensor; 56. Flow sensor; 57. Temperature collection module; 58. Second circulation pump; 59. Booster pump; 590. Ninth pipeline; 6. Central control unit. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Example 1 See Figure 1 This embodiment requires protection of the glass annealing furnace, including an auxiliary heat exchanger 10, a first pipeline 11, a first circulating pump 12, an input main pipe 13, a second pipeline 14, a reversing valve 15, a third pipeline 16, a fourth pipeline 17, a heat exchange station 18, a fifth pipeline 19, a refrigerant return manifold 20, an output main pipe 21, a furnace body, and a heat exchange mechanism 23.

[0028] The auxiliary heat exchanger 10, also known as the refrigerant supply source, has two main functions: first, it can be used to add refrigerant to the compensation pipeline; second, it serves as an auxiliary heat exchanger 10 itself, using the waste heat generated by the furnace to heat the refrigerant inside.

[0029] One end of the auxiliary heat exchanger 10 is connected to one end of the first pipeline 11. A first circulating pump 12 is installed on the first pipeline 11. The main function of the first circulating pump 12 is to circulate and pressurize the refrigerant. The other end of the first pipeline 11 is connected to the input main pipe 13. The other end of the auxiliary heat exchanger 10 is connected to one end of the second pipeline 14. The other end of the second pipeline 14 is connected to the first port of the reversing valve 15. The reversing valve 15 is a three-way reversing valve. The second port of the three-way reversing valve 15 is connected to one end of the third pipeline 16. The other end of the third pipeline 16 is connected to the node of the first pipeline 11. This node is located between the first circulating pump 12 and the auxiliary heat exchanger 10.

[0030] The third port of the three-way reversing valve 15 is connected to one end of the fourth pipeline 17, and the other end of the fourth pipeline 17 is connected to the heat exchange station 18. The heat exchange station 18 is the heat exchange station of the glass annealing furnace system itself, and it exchanges heat with the external cooling pool. The heat exchange station 18 is connected to the refrigerant return manifold 20 through the fifth pipeline 19. The refrigerant return manifold 20 is used to collect the liquid refrigerant returning inside the furnace. The heat exchange station 18 is connected to the output main pipe 21.

[0031] Both the input main pipe 13 and the output main pipe 21 are connected into the kiln body and are arranged along the length of the kiln body. The kiln body is a well-insulated tunnel structure, and a channel is formed inside the kiln body through which the glass plate can flow.

[0032] See Figures 2 to 5 Several heat exchange mechanisms 23 are evenly arranged along the length of the kiln body. Each heat exchange mechanism 23 has a U-shaped structure that allows passageways to pass through. Each heat exchange mechanism 23 includes a first upper main pipe 230, a second upper main pipe 231, a first lower main pipe 232, a second lower main pipe 233, an upper heat exchange unit 234, a lower heat exchange unit 235, an emergency pipe 236, and a connecting pipe 238. The first upper main pipe 230, the first lower main pipe 232, the second upper main pipe 231, and the second lower main pipe 233 are respectively installed on the upper and lower sides of the kiln body. The first upper main pipe 230 is connected to the input end of the upper heat exchange unit 234. The output terminal of element 234 is connected to the main pipe 231 on the second plate. The main pipe 231 on the second plate is connected to the main pipe 233 on the lower plate via a connecting pipe 238. A first control valve 239 is installed on the connecting pipe 238. The main pipe 233 on the lower plate is connected to the input terminal of the lower heat exchange unit 235. The output terminal of the lower heat exchange unit 235 is connected to the main pipe 232 on the lower plate. The main pipe 232 on the lower plate is connected to the main pipe 230 on the upper plate via an emergency pipe 236. An emergency gate valve 237 is installed on the emergency pipe 236.

[0033] Furthermore, the upper heat exchange unit 234 and the lower heat exchange unit 235 have the same structure; the upper heat exchange unit 234 is described as an example, and the lower heat exchange unit 235 is similar, so it will not be described again. The upper heat exchange unit 234 includes a first flow pipe 2340, a first flexible hose 2341, a second control valve 2342, a heat exchanger body 2343, a second flexible hose 2344, a second flow pipe 2345, a first support 2346, a second support 2347, and a lifting mechanism 2348. Each upper heat exchange unit 234 has twelve heat exchanger bodies 2343, arranged in two rows and six columns. The three columns of heat exchanger bodies 2343 closest to the main pipe 230 on the first plate are installed on the first support 2346, and the three columns of heat exchanger bodies 2343 closest to the main pipe 231 on the second plate are installed on the second support 2347. The second support 2347 and the first support 2346 are respectively controlled by the corresponding lifting mechanism 2348, which is located inside the kiln.

[0034] Each heat exchanger body 2343 is equipped with a corresponding first flow pipe 2340, second flow pipe 2345, first flexible hose 2341, and second flexible hose 2344. The first flow pipe 2340 and second flow pipe 2345 are parallel to the wide side of the kiln body. The main pipeline 230 on the first plate is connected to the first flow pipe 2340 to form the input end of the upper heat exchange unit 234. The first flow pipe 2340 is connected to one end of the heat exchanger body 2343 through the first flexible hose 2341. A second control valve 2342 is installed on each of the first flexible hoses 2341. The other end of the heat exchanger body 2343 is connected to the second flow pipe 2345 through the second flexible hose 2344. The second flow pipe 2345 is connected to the main pipeline 231 on the second plate to form the output end of the upper heat exchange unit 234.

[0035] It is worth mentioning that the elevator 2348 is used to control the height of the corresponding three rows of heat exchanger bodies 2343, thereby adjusting the distance between the heat exchanger body 2343 and the glass plate. Together with the second control valve 2342 on the first flexible hose 2341, it controls the flow rate of refrigerant entering the heat exchanger body 2343. The two work together to control the temperature at different locations within different kilns, thus meeting the need to create different temperature atmospheres when multiple glasses are produced within the kiln.

[0036] The main pipe 230 on the first plate is connected to the input main pipe 13, and the main pipe 232 on the lower part of the first plate is connected to the output main pipe 21. The emergency gate valve 237 is a gate valve, which is normally closed and does not participate in the flow. When a special situation occurs in the kiln and the refrigerant does not need to flow, but the refrigerant still needs to flow, the emergency gate valve 237 opens, allowing the refrigerant to flow directly from the main pipe 230 on the first plate to the main pipe 232 on the lower part of the first plate, without entering the heat exchanger body 2343.

[0037] Therefore, under normal use, the input main pipe 13, the main pipe 230 on the first plate, the upper heat exchange unit 234, the connecting pipe 238, the lower heat exchange unit 235, the lower main pipe 232 on the first plate, and the output main pipe 21 form a heat exchange pipeline that allows the refrigerant supply source to flow. The second control valve 2342 is used to control the flow rate of the refrigerant entering the heat exchanger body 2343, while the first control valve 239 is used to control the flow rate of the refrigerant entering the lower heat exchange unit 235.

[0038] The glass annealing furnace is based on a refrigerant, and the heat exchange process within the furnace using its own energy field is as follows: When cooling is required, the reversing valve 15 is activated and the first interface is closed. At this time, the reversing valve 15, the third pipeline 16, the fourth pipeline 17, the first circulating pump 12, the heat exchange station 18, the refrigerant return manifold 20 and the heat exchange pipeline are connected to form a closed circulation pipeline. The first circulating pump 12 and the heat exchange station 18 are turned on, so that the refrigerant cooled by the heat exchange station 18 enters the kiln body and continuously exchanges heat and cools the glass belt through the heat exchanger body 2343.

[0039] When heating is required, the second interface is closed. At this time, the reversing valve 15, the first pipeline 11, the auxiliary heat exchanger 10, the first circulating pump 12, the second pipeline 14, the heat exchange station 18, the refrigerant return manifold 20 and the heat exchange pipeline are connected to form a closed circulation pipeline. The first circulating pump 12 and the auxiliary heat exchanger 10 are turned on, so that the refrigerant heated by the auxiliary heat exchanger 10 enters the kiln body and continuously heats the glass belt through the heat exchanger body 2343 to raise its temperature.

[0040] It must be emphasized that this implementation abandons the existing electric heating and external fan heat dissipation technologies. During the heating process, the waste heat of the kiln itself is used as the main heat source. During cooling, the huge fan system, gas pipeline or resistance band is eliminated, and the heat exchange station 18 built into the annealing kiln system is used. The whole process has three advantages: First, the heat exchange efficiency of liquid refrigerant is much higher than that of air. Combined with the fact that each first hose 2341 is equipped with a second control valve 2342, independent point-to-point control can be achieved. Due to the large heat capacity and fast heat conduction of liquid medium, the overall heating and cooling response speed is significantly improved. In other words, whether cooling or heating, its efficiency is higher than that of existing fan and electric heating technologies.

[0041] Secondly, by not introducing excessive additional energy and equipment, and improving cooling and heating efficiency, energy consumption and operating costs are significantly reduced; moreover, pollution is low, which meets the core requirements of sustainable development.

[0042] Finally, heating and cooling are no longer considered as separate parts. Instead, although they are controlled independently in terms of working principle, they share components such as heat exchange pipelines and the first circulation pump 12 in terms of structure. This not only makes the structure more compact and orderly, but also reduces the number of failure points and lowers maintenance costs.

[0043] It is also worth mentioning that the kiln body is divided into several heat exchange zones along the length and width directions. For example, several heat exchange mechanisms 23 are formed along the length direction, and further, three rows of heat exchanger bodies 2343 are formed along the width direction and installed on the first support 2346, which are lifted and lowered by the corresponding elevators 2348. This means that the heat exchange zones in the kiln body are independent of each other. During use, the lifting height of the elevators 2348 and the flow control of the second control valve 2342 can be adjusted according to different heat exchange requirements. At the same time, it can provide the annealing environment required for two or more different types of glass, such as ultra-clear glass, ordinary float glass or glass strips of different thicknesses, which greatly improves production flexibility and equipment utilization.

[0044] Example 2 See Figure 6 and Figure 7 Based on Embodiment 1, this embodiment requires protection of a glass annealing furnace system, including a glass annealing furnace, a first temperature sensor 3, a third support 4, a control module 5, and a central control unit 6. Each heat exchanger body 2343 is equipped with a temperature sensor, and the first temperature sensor 3 is used to monitor the temperature inside the heat exchanger body 2343.

[0045] The second control valve 2342, the reversing valve 15, and the first control valve 239 are all solenoid valves. The central control unit 6 is used to receive information from the control module 5 and the first temperature sensor 3, and controls the opening and closing of the solenoid valve, the auxiliary heat exchanger 10, and the first circulating pump 12 according to the information to realize the control of the glass annealing furnace, which is the prior art. A third support 4 is installed on the kiln body, and a control module 5 is installed on the third support 4. The control module 5 includes a sixth pipe 50, a seventh pipe 51, an eighth pipe 52, a radiator 53, a pressure sensor 54, a second temperature sensor 55, a flow sensor 56, a temperature collection module 57, a second circulation pump 58, a booster pump 59, and the eighth pipe 52. The input main pipe 13 is connected to the sixth pipe 50, the seventh pipe 51, and the ninth pipe 590 respectively. There are three seventh pipes 51, and the pressure sensor 54, the second temperature sensor 55, and the flow sensor 56 are respectively installed on the three seventh pipes 51. The other end of the seventh pipes 51 converges and is connected to the eighth pipe 52 through the booster pump 59. The eighth pipe 52 is connected to the central control unit 6. The sixth pipe 50 and the ninth pipe 590 are respectively arranged on both sides of the seventh pipe 51. The other ends of the sixth pipe 50 and the ninth pipe 590 are respectively connected to the two ends of the radiator 53. The ninth pipe 590 is equipped with a second circulation pump 58. The temperature collection module 57 is used to receive the output information of the first temperature sensor 3 and transmit it to the central control unit 6. This is existing technology and will not be described in detail.

[0046] Through the first temperature sensor 3, the third bracket 4, the control module 5, and the central control unit 6, countless annealing process formulas can be stored and recalled in the central control unit 6. According to the requirements of different annealing process formulas, combined with the information input of refrigerant temperature, flow rate, and pressure, the opening and closing of the solenoid valve can be controlled to achieve automated control.

[0047] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A glass annealing furnace, characterized in that, It includes a kiln body, heat exchange pipelines, heating pipes, auxiliary heat exchanger (10), cooling pipes, heat exchange station (18), third pipeline (16), reversing valve (15) and first circulating pump (12); a channel is formed in the kiln body, and heat exchange pipelines are arranged on and / or below the channel, with the heat exchange section of the heat exchange pipeline facing the channel; the heating pipe, cooling pipe and third pipeline (16) are connected through reversing valve (15), the other end of the heating pipe is connected to one end of the heat exchange pipeline, the other end of the cooling pipe is connected to the other end of the heat exchange pipeline, the auxiliary heat exchanger (10) and the first circulating pump (12) are installed on the heating pipe, the cooling pipe flows through the heat exchange station (18), and the other end of the third pipeline (16) is connected to the node of the first pipeline (11), the node is located between the first circulating pump (12) and the auxiliary heat exchanger (10).

2. The glass annealing furnace according to claim 1, characterized in that, The heat exchange pipeline includes an inlet main pipe (13), a heat exchange mechanism (23), and an outlet main pipe (21). Both the inlet main pipe (13) and the outlet main pipe (21) are connected to the kiln body and are arranged along the length of the kiln body. Several heat exchange mechanisms (23) are evenly arranged along the length of the inlet main pipe (13) inside the kiln body. The interior of the heat exchange mechanism (23) is configured to allow passageways to pass through. One end of the heat exchange mechanism (23) is connected to the inlet main pipe (13), and the other end of the heat exchange mechanism (23) is connected to the outlet main pipe (21).

3. The glass annealing furnace according to claim 2, characterized in that, The heat exchange mechanism (23) includes a first upper main pipe (230), a second upper main pipe (231), a first lower main pipe (232), a second lower main pipe (233), an upper heat exchange unit (234), a lower heat exchange unit (235), a connecting pipe (238), and a first control valve (239). The first upper main pipe (230), the first lower main pipe (232), the second upper main pipe (231), and the second lower main pipe (233) are respectively installed on the upper and lower sides of the kiln body. The input main pipe (13) connects to the first upper main pipe (230). 230) Connected, the main pipe (230) on the first plate is connected to the input end of the upper heat exchange unit (234), the output end of the upper heat exchange unit (234) is connected to the main pipe (231) on the second plate, the main pipe (231) on the second plate is connected to the main pipe (233) on the second plate through the connecting pipe (238), the main pipe (233) on the second plate is connected to the input end of the lower heat exchange unit (235), the output end of the lower heat exchange unit (235) is connected to the main pipe (232) on the first plate, and the main pipe (232) on the first plate is connected to the output main pipe (21).

4. The glass annealing furnace according to claim 3, characterized in that, The upper heat exchange unit (234) includes a first flow tube (2340), a first flexible hose (2341), a second control valve (2342), a heat exchanger body (2343), a second flexible hose (2344), and a second flow tube (2345). Several rows of heat exchanger bodies (2343) are arranged above the channel, wherein the heat exchanger bodies (2343) constitute the heat exchange section of the heat exchange pipeline; the first flow tube (2340) and the second flow tube (2345) are parallel to the wide side of the kiln body, and the main pipeline (230) on the first plate is connected to the first flow tube. The pipe (2340) is connected to form the input end of the upper heat exchange unit (234). The first flow pipe (2340) is connected to one end of the heat exchanger body (2343) through the first hose (2341). The first hose (2341) is equipped with a second control valve (2342). The other end of the heat exchanger body (2343) is connected to the second flow pipe (2345) through the second hose (2344). The second flow pipe (2345) is connected to the main pipe (231) on the second plate to form the output end of the upper heat exchange unit (234).

5. The glass annealing furnace according to claim 4, characterized in that, The upper heat exchange unit (234) also includes a lift (2348), and several lifts (2348) are installed inside the kiln. The lifts (2348) are configured to adjust the height distance between the corresponding heat exchanger body (2343) and the channel.

6. The glass annealing furnace according to claim 4, characterized in that, The upper heat exchange unit (234) has the same structure as the lower heat exchange unit (235).

7. The glass annealing furnace according to claim 3, characterized in that, A first control valve (239) is installed on the connecting pipe (238).

8. The glass annealing furnace according to claim 3, characterized in that, The heat exchange mechanism (23) also includes an emergency pipeline (236). The main pipeline (232) under the first plate and the main pipeline (230) on the first plate are connected through the emergency pipeline (236). An emergency gate valve (237) is installed on the emergency pipeline (236).

9. The glass annealing furnace according to claim 1, characterized in that, It also includes a refrigerant return manifold (20), and a refrigerant return manifold (20) is installed on the cooling pipe.

10. A glass annealing furnace system employing the glass annealing furnace according to any one of claims 1 to 9, characterized in that, The system includes a glass annealing furnace system, sensors, a control module (5) and a central control unit (6). The second control valve (2342), the reversing valve (15) and the first control valve (239) are all solenoid valves. Sensors are installed inside the furnace to detect the working conditions inside the furnace and output the working conditions information to the control module (5). The control module (5) is used to receive and integrate information and transmit it to the central control unit (6). The central control unit (6) is used to receive information and control the opening and closing of the solenoid valve, auxiliary heat exchanger (10) and first circulation pump (12).

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