Working method of hot air circulation system of toughened glass homogenizing furnace

Abstract

The present application relates to the technical field of homogenizing furnace, and discloses a working method of a hot air circulation system of a tempered glass homogenizing furnace, which respectively monitors the temperature change curve of the homogenizing cavity with time in the heating stage and the cooling stage, compares the actual change curve with the standard change curve, timely avoids abnormal phenomena such as pipeline blockage of the hot air circulation system in the heating stage and the cooling stage, avoids economic losses caused by the abnormal phenomena, obtains the internal temperature data of the homogenizing cavity in the constant temperature stage of the ith temperature sensor, calculates the consistency coefficient sigma i of the constant temperature stage, and judges whether the corresponding hot air circulation system of the homogenizing cavity region monitored by the ith sensor is abnormal or not according to the consistency coefficient sigma i of the constant temperature stage, so that the uneven heating is avoided and the homogenizing effect is affected.

Description

Technical Field

[0001] This invention relates to the field of homogenizing furnace technology, and more specifically to a working method of a hot air circulation system for a tempered glass homogenizing furnace. Background Technology

[0002] The tempered glass homogenizing furnace is a testing device for finished tempered glass products. After the glass tempering process is completed, it enters the homogenizing furnace. Through the hot soaking principle of the homogenizing furnace, it conducts explosion tests and removes residual nickel sulfide. Tempered glass with potential "spontaneous explosion" risks, i.e., uneven internal stress, is prematurely detonated during the test, thus preventing "spontaneous explosion" from happening again after installation. The pass rate of tempered glass after homogenization is greatly improved, thereby enhancing the safety and reliability of tempered glass in buildings.

[0003] The existing tempered glass homogenization process consists of three stages: heating, constant temperature, and cooling. Controlling the hot air circulation system of the homogenizing furnace during these three stages is a problem that needs to be solved. Parameters at any point during the heating and cooling stages will affect the homogenization effect of the tempered glass. Furthermore, each piece of tempered glass has a different size. During the constant temperature stage, the temperature uniformity inside the homogenizing furnace directly affects the homogenization effect. Therefore, this invention provides a method for operating the hot air circulation system of a tempered glass homogenizing furnace, which monitors the temperature inside the homogenizing furnace during the heating, constant temperature, and cooling stages of the homogenization process, thereby improving the yield. Summary of the Invention

[0004] The purpose of this invention is to provide a method for operating a hot air circulation system for a tempered glass homogenizing furnace, the method comprising the following steps:

[0005] Step S1: Evenly set several temperature sensors in the homogenizing furnace to monitor the temperature change inside the homogenizing chamber in real time when the hot air circulation system is working.

[0006] Step S2: Turn on the hot air circulation system to enter the heating stage and bring the homogenizing furnace to the target temperature.

[0007] Step S3: Real-time acquisition of temperature parameters inside the homogenizing furnace during the heating phase of the hot air circulation system, and determination of whether the heating phase of the hot air circulation system is normal. If normal, determine whether the temperature inside the homogenizing furnace has reached the set temperature. If the set temperature is reached, proceed to step S4; otherwise, proceed to step S6.

[0008] Step S4: The hot air circulation system enters the constant temperature stage. The temperature parameters inside the homogenizing furnace during the constant temperature stage of the hot air circulation system are acquired in real time. It is determined whether the constant temperature stage of the hot air circulation system is normal. If it is normal, it is determined whether the constant temperature time has reached the set time. If it has reached the set time, proceed to step S5. If it is not normal, proceed to step S6.

[0009] Step S5: The hot air circulation system enters the cooling stage. The temperature parameters inside the homogenizing furnace during the cooling stage of the hot air circulation system are obtained in real time. It is determined whether the cooling stage of the hot air circulation system is normal. If it is normal, it is determined whether the temperature inside the homogenizing furnace has been cooled to the set temperature. If the set temperature is reached, proceed to step S6. If it is not normal, proceed to step S6.

[0010] Step S6: Immediately issue a warning to staff.

[0011] As a further description of the present invention, the process of determining whether the heating phase of the hot air circulation system is normal includes:

[0012] The temperature data inside the homogenizing chamber during the heating stage is acquired in real time through a temperature monitoring system, and the actual temperature change curve f1(t) over time is fitted.

[0013] Obtain the standard curve of temperature change of the homogenization chamber inside the heating stage over time, g1(t);

[0014] Construct a rectangular coordinate system xoy, compare the actual temperature change curve f1(t) with the standard temperature change curve g1(t) within the rectangular coordinate system xoy, and obtain the heating coefficient ρ.

[0015] Compare the heating coefficient ρ with the set heating coefficient threshold range [ρ1, ρ2]. If ρ belongs to the threshold range [ρ1, ρ2], it indicates that the heating phase of the hot air circulation system is normal.

[0016] If ρ does not belong to the threshold interval [ρ1, ρ2], it indicates that the heating stage of the hot air circulation system is abnormal, and an early warning should be issued to the staff immediately.

[0017] As a further description of the present invention, the process of obtaining the heating coefficient ρ includes:

[0018] The temperature rise coefficient ρ is calculated based on the actual temperature change curve f1(t) over time and the standard temperature change curve g1(t) over time.

[0019]

[0020] In the formula, t1 is the initial time of the heating stage, and t2 is the end time of the heating stage.

[0021] As a further description of the present invention, the normal operation process of the constant temperature stage of the heat-insulating air circulation system includes:

[0022] Acquire the temperature data inside the homogenizing chamber during the isothermal stage of the i-th temperature sensor, and fit the actual temperature change curve f over time. 2i (t);

[0023] Calculate the consistency coefficient σ during the isothermal stagei The consistency coefficient σ during the isothermal stage i Compared with the set consistency coefficient threshold interval [σ1, σ2] for the isothermal stage, if σ i If the value falls within the threshold range [σ1, σ2], it indicates that the constant temperature phase of the hot air circulation system in the homogeneous cavity region monitored by the i-th sensor is normal.

[0024] If σ i If the value does not fall within the threshold interval [σ1, σ2], it indicates that the constant temperature stage of the hot air circulation system in the homogeneous cavity region monitored by the i-th sensor is abnormal, and an early warning is immediately issued to the staff.

[0025] As a further description of the present invention, the consistency coefficient σ of the isothermal stage i The calculation process includes:

[0026] First, calculate the difference between the temperature monitored by the i-th sensor and the temperature of the entire homogenizing cavity during the isothermal period, denoted as A:

[0027]

[0028] Then, at the end of the isothermal period, the difference between the temperature monitored by the i-th sensor and the temperature of the entire homogenized cavity is calculated and denoted as B:

[0029]

[0030] Finally, the consistency coefficient σ of the isothermal stage is calculated based on A and B. i :

[0031] σ i =α*A + β*B;

[0032] In the formula, n is the number of temperature sensors, i∈[1,n], t2 is the start time of the isothermal stage, t3 is the end time of the isothermal stage, and α and β are weighting coefficients.

[0033] As a further description of the present invention, the process of determining whether the cooling phase of the hot air circulation system is normal includes:

[0034] The temperature data inside the homogenizing chamber during the cooling stage is acquired in real time through a temperature monitoring system, and the actual temperature change curve f3(t) over time is fitted.

[0035] Obtain the standard curve of temperature change of the homogenization chamber over time during the cooling stage, g3(t);

[0036] Construct a rectangular coordinate system xoy, compare the actual temperature change curve f3(t) with the standard temperature change curve g3(t) within the rectangular coordinate system xoy, and obtain the cooling coefficient τ.

[0037] Compare the heating and cooling coefficient τ with the set heating coefficient threshold range [τ1, τ2]. If τ belongs to the threshold range [τ1, τ2], it indicates that the cooling phase of the hot air circulation system is normal.

[0038] If τ does not belong to the threshold interval [τ1, τ2], it indicates that the hot air circulation system is not operating normally during the temperature stage, and an early warning should be issued to the staff immediately.

[0039] As a further description of the present invention, the process of obtaining the cooling coefficient τ includes:

[0040] The temperature rise coefficient τ is calculated based on the actual temperature change curve f3(t) over time and the standard temperature change curve g3(t) over time.

[0041]

[0042] In the formula, t4 is the initial time of the cooling stage, and t3 is the end time of the cooling stage.

[0043] As a further description of the present invention, the temperature is the average temperature inside the homogenizing cavity.

[0044] The beneficial effects of this invention are:

[0045] 1. This invention acquires real-time temperature data inside the homogenizing chamber during the heating phase of the hot air circulation system, fits the actual temperature change curve f1(t) over time, and then compares the actual temperature change curve f1(t) with the standard temperature change curve g1(t) over time. The result is obtained using the formula... Calculate the heating coefficient ρ and compare it with the set heating coefficient threshold interval [ρ1, ρ2]. If ρ belongs to the threshold interval [ρ1, ρ2], it means that the heating stage of the hot air circulation system is normal; if ρ does not belong to the threshold interval [ρ1, ρ2], it means that the heating stage of the hot air circulation system is abnormal. In this stage, there may be impurities blocking the air supply pipe, and an early warning should be issued to the staff immediately.

[0046] 2. This invention acquires the internal temperature data of the homogenizing cavity during the isothermal stage of the i-th temperature sensor, and fits the actual temperature change curve f over time. 2i (t), and according to the formula Calculate the difference between the temperature monitored by the i-th sensor and the overall temperature inside the homogenizing chamber during the isothermal period; according to the formula... Calculate the difference between the temperature monitored by the i-th sensor and the overall temperature inside the homogenizing chamber at the end of the isothermal period, and then apply the formula σ. i =α*A+β*B Calculate the consistency coefficient σ during the isothermal stage i The consistency coefficient σ during the isothermal stage iCompared with the set consistency coefficient threshold interval [σ1, σ2] for the isothermal stage, if σ i If the value falls within the threshold interval [σ1, σ2], it indicates that the constant temperature phase of the hot air circulation system in the homogeneous cavity region monitored by the i-th sensor is normal; if σ i If the temperature is not within the threshold interval [σ1, σ2], it indicates that the constant temperature stage of the hot air circulation system in the homogeneous cavity area monitored by the i-th sensor is abnormal, and the corresponding air supply duct in this area is blocked or damaged. An early warning should be issued to the staff immediately.

[0047] 3. This invention acquires real-time temperature data inside the homogenizing chamber during the cooling phase of the hot air circulation system, fits the actual temperature change curve f3(t) over time, and then compares the actual temperature change curve f3(t) with the standard temperature change curve g3(t) over time using the formula. Calculate the cooling coefficient τ and compare it with the set cooling coefficient threshold interval [τ1, τ2]. If τ belongs to the threshold interval [τ1, τ2], it means that the cooling phase of the hot air circulation system is normal; if τ does not belong to the threshold interval [τ1, τ2], it means that the cooling phase of the hot air circulation system is abnormal, and an early warning is immediately issued to the staff. Attached Figure Description

[0048] The invention will now be further described with reference to the accompanying drawings.

[0049] Figure 1 This is a partial flowchart illustrating the working method of the hot air circulation system for the tempered glass homogenizing furnace provided by the present invention. Detailed Implementation

[0050] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 are within the scope of protection of the present invention.

[0051] Please see Figure 1 As shown, the present invention provides a method for operating a hot air circulation system for a tempered glass homogenizing furnace, the method comprising the following steps:

[0052] Step S1: Evenly set several temperature sensors in the homogenizing furnace to monitor the temperature change inside the homogenizing chamber in real time when the hot air circulation system is working.

[0053] Step S2: Turn on the hot air circulation system to enter the heating stage and bring the homogenizing furnace to the target temperature.

[0054] Step S3: Real-time acquisition of temperature parameters inside the homogenizing furnace during the heating phase of the hot air circulation system, and determination of whether the heating phase of the hot air circulation system is normal. If normal, determine whether the temperature inside the homogenizing furnace has reached the set temperature. If the set temperature is reached, proceed to step S4; otherwise, proceed to step S6.

[0055] Step S4: The hot air circulation system enters the constant temperature stage. The temperature parameters inside the homogenizing furnace during the constant temperature stage of the hot air circulation system are acquired in real time. It is determined whether the constant temperature stage of the hot air circulation system is normal. If it is normal, it is determined whether the constant temperature time has reached the set time. If it has reached the set time, proceed to step S5. If it is not normal, proceed to step S6.

[0056] Step S5: The hot air circulation system enters the cooling stage. The temperature parameters inside the homogenizing furnace during the cooling stage of the hot air circulation system are obtained in real time. It is determined whether the cooling stage of the hot air circulation system is normal. If it is normal, it is determined whether the temperature inside the homogenizing furnace has been cooled to the set temperature. If the set temperature is reached, proceed to step S6. If it is not normal, proceed to step S6.

[0057] Step S6: Immediately issue a warning to staff.

[0058] Example 1

[0059] The process for determining whether the heating phase of the hot air circulation system is normal includes:

[0060] The temperature data inside the homogenizing chamber during the heating stage is acquired in real time through a temperature monitoring system, and the actual temperature change curve f1(t) over time is fitted.

[0061] Obtain the standard curve of temperature change of the homogenization chamber inside the heating stage over time, g1(t);

[0062] Construct a rectangular coordinate system xoy, compare the actual temperature change curve f1(t) with the standard temperature change curve g1(t) within the rectangular coordinate system xoy, and obtain the heating coefficient ρ.

[0063] Compare the heating coefficient ρ with the set heating coefficient threshold range [ρ1, ρ2]. If ρ belongs to the threshold range [ρ1, ρ2], it indicates that the heating phase of the hot air circulation system is normal.

[0064] If ρ does not belong to the threshold interval [ρ1, ρ2], it indicates that the heating stage of the hot air circulation system is abnormal, and an early warning should be issued to the staff immediately.

[0065] The process of obtaining the heating coefficient ρ includes:

[0066] The temperature rise coefficient ρ is calculated based on the actual temperature change curve f1(t) over time and the standard temperature change curve g1(t) over time.

[0067]

[0068] In the formula, t1 is the initial time of the heating stage, and t2 is the end time of the heating stage.

[0069] Through the above technical solution, this embodiment acquires the internal temperature data of the homogenization chamber in real time during the heating stage of the hot air circulation system, fits the actual temperature change curve f1(t) over time, and then compares the actual temperature change curve f1(t) with the standard temperature change curve g1(t) over time using the formula. Calculate the heating coefficient ρ and compare it with the set heating coefficient threshold range [ρ1, ρ2]. If ρ belongs to the threshold range [ρ1, ρ2], it means that the heating stage of the hot air circulation system is normal; if ρ does not belong to the threshold range [ρ1, ρ2], it means that the heating stage of the hot air circulation system is abnormal. In this stage, there may be impurities blocking the air supply pipe, and an early warning should be issued to the staff immediately.

[0070] Example 2

[0071] The normal operation of the constant temperature phase of the heat-insulating air circulation system includes:

[0072] Acquire the temperature data inside the homogenizing chamber during the isothermal stage of the i-th temperature sensor, and fit the actual temperature change curve f over time. 2i (t);

[0073] Calculate the consistency coefficient σ during the isothermal stage i The consistency coefficient σ during the isothermal stage i Compared with the set consistency coefficient threshold interval [σ1, σ2] for the isothermal stage, if σ i If the value falls within the threshold range [σ1, σ2], it indicates that the constant temperature phase of the hot air circulation system in the homogeneous cavity region monitored by the i-th sensor is normal.

[0074] If σ i If the value does not fall within the threshold interval [σ1, σ2], it indicates that the constant temperature stage of the hot air circulation system in the homogeneous cavity region monitored by the i-th sensor is abnormal, and an early warning is immediately issued to the staff.

[0075] The consistency coefficient σ during the isothermal stage i The calculation process includes:

[0076] First, calculate the difference between the temperature monitored by the i-th sensor and the temperature of the entire homogenizing cavity during the isothermal period, denoted as A:

[0077]

[0078] Then, at the end of the isothermal period, the difference between the temperature monitored by the i-th sensor and the temperature of the entire homogenized cavity is calculated and denoted as B:

[0079]

[0080] Finally, the consistency coefficient σ of the isothermal stage is calculated based on A and B. i :

[0081] σ i =α*A + β*B;

[0082] In the formula, n is the number of temperature sensors, i∈[1,n], t2 is the start time of the isothermal stage, t3 is the end time of the isothermal stage, and α and β are weighting coefficients.

[0083] Through the above technical solution, this embodiment obtains the internal temperature data of the homogenized cavity during the isothermal stage of the i-th temperature sensor, and fits the actual temperature change curve f over time. 2i (t), and according to the formula Calculate the difference between the temperature monitored by the i-th sensor and the overall temperature inside the homogenizing chamber during the isothermal period; according to the formula... Calculate the difference between the temperature monitored by the i-th sensor and the overall temperature inside the homogenizing chamber at the end of the isothermal period, and then apply the formula σ. i =α*A+β*B Calculate the consistency coefficient σ during the isothermal stage i The consistency coefficient σ during the isothermal stage i Compared with the set consistency coefficient threshold interval [σ1, σ2] for the isothermal stage, if σ i If the value falls within the threshold interval [σ1, σ2], it indicates that the constant temperature phase of the hot air circulation system in the homogeneous cavity region monitored by the i-th sensor is normal; if σ i If the temperature is not within the threshold range [σ1, σ2], it indicates that the constant temperature stage of the hot air circulation system in the homogeneous cavity area monitored by the i-th sensor is abnormal, and the corresponding air supply duct in this area is blocked or damaged, and an early warning is immediately issued to the staff.

[0084] Example 3

[0085] The process of determining whether the cooling phase of the hot air circulation system is normal includes: acquiring the temperature data inside the homogenization chamber in real time through the temperature monitoring system, and fitting the actual temperature change curve f3(t) over time.

[0086] Obtain the standard curve of temperature change of the homogenization chamber over time during the cooling stage, g3(t);

[0087] Construct a rectangular coordinate system xoy, compare the actual temperature change curve f3(t) with the standard temperature change curve g3(t) within the rectangular coordinate system xoy, and obtain the cooling coefficient τ.

[0088] Compare the heating and cooling coefficient τ with the set heating coefficient threshold range [τ1, τ2]. If τ belongs to the threshold range [τ1, τ2], it indicates that the cooling phase of the hot air circulation system is normal.

[0089] If τ does not belong to the threshold interval [τ1, τ2], it indicates that the hot air circulation system is not operating normally during the temperature stage, and an early warning should be issued to the staff immediately.

[0090] The process of obtaining the cooling coefficient τ includes:

[0091] The temperature rise coefficient τ is calculated based on the actual temperature change curve f3(t) over time and the standard temperature change curve g3(t) over time.

[0092]

[0093] In the formula, t4 is the initial time of the cooling stage, and t3 is the end time of the cooling stage.

[0094] The temperature is the average temperature inside the homogenization chamber.

[0095] Through the above technical solution, this embodiment acquires the internal temperature data of the homogenization chamber in real time during the cooling stage of the hot air circulation system, fits the actual temperature change curve f3(t) over time, and then compares the actual temperature change curve f3(t) with the standard temperature change curve g3(t) over time using the formula. Calculate the cooling coefficient τ and compare it with the set cooling coefficient threshold interval [τ1, τ2]. If τ belongs to the threshold interval [τ1, τ2], it means that the cooling phase of the hot air circulation system is normal; if τ does not belong to the threshold interval [τ1, τ2], it means that the cooling phase of the hot air circulation system is abnormal, and an early warning is immediately issued to the staff.

[0096] Working Principle: This invention monitors the temperature change curves within the homogenization chamber over time in real time during both the heating and cooling stages. By comparing the actual curves with standard curves, it promptly identifies and avoids abnormalities such as pipe blockages in the hot air circulation system during the heating and cooling stages, thus preventing economic losses. Simultaneously, by acquiring the temperature data inside the homogenization chamber during the isothermal stage from the i-th temperature sensor, it calculates the consistency coefficient σ for the isothermal stage. i And through the consistency coefficient σ of the isothermal stage i Determine whether the hot air circulation system corresponding to the homogenization chamber region monitored by the i-th sensor is abnormal, so as to avoid uneven heating and affect the homogenization effect.

[0097] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A method for operating a hot air circulation system for a tempered glass homogenizing furnace, characterized in that, The method includes the following steps: Step S1: Evenly set several temperature sensors in the homogenizing furnace to monitor the temperature change inside the homogenizing chamber in real time when the hot air circulation system is working. Step S2: Turn on the hot air circulation system to enter the heating stage and bring the homogenizing furnace to the target temperature. Step S3: Real-time acquisition of temperature parameters inside the homogenizing furnace during the heating phase of the hot air circulation system, and determination of whether the heating phase of the hot air circulation system is normal. If normal, determine whether the temperature inside the homogenizing furnace has reached the set temperature. If the set temperature is reached, proceed to step S4; otherwise, proceed to step S6. Step S4: The hot air circulation system enters the constant temperature stage. The temperature parameters inside the homogenizing furnace during the constant temperature stage of the hot air circulation system are acquired in real time. It is determined whether the constant temperature stage of the hot air circulation system is normal. If it is normal, it is determined whether the constant temperature time has reached the set time. If it has reached the set time, proceed to step S5. If it is not normal, proceed to step S6. Step S5: The hot air circulation system enters the cooling stage. The temperature parameters inside the homogenizing furnace during the cooling stage of the hot air circulation system are obtained in real time. It is determined whether the cooling stage of the hot air circulation system is normal. If it is normal, it is determined whether the temperature inside the homogenizing furnace has been cooled to the set temperature. If the set temperature is reached, the process ends. If it is not normal, the process proceeds to step S6. Step S6: Immediately issue a warning to staff; The process for determining whether the hot air circulation system is operating normally during the heating phase includes: The temperature monitoring system acquires real-time temperature data inside the homogenizing chamber during the heating phase and fits a curve showing the actual temperature change over time. ; Obtain the standard curve of temperature change inside the homogenization chamber over time during the heating phase. ; Construct a rectangular coordinate system xoy and compare the actual temperature change curves over time within the xoy system. and temperature versus time standard curve Obtain the temperature rise coefficient ; The temperature rise coefficient and the set temperature rise coefficient threshold range In comparison, if Belongs to the threshold range This indicates that the heating phase of the hot air circulation system is normal; like Not within the threshold range This indicates that the hot air circulation system is malfunctioning during the heating phase, and an immediate warning should be issued to the staff. The temperature rise coefficient The acquisition process includes: Based on the actual temperature change curve over time and temperature versus time standard curve The temperature rise coefficient was calculated. : ； In the formula, It is the initial moment of the warming phase. It marks the end of the warming phase; The normal operation of the constant temperature phase of the heat-insulating air circulation system includes: Acquire the temperature data inside the homogenizing cavity during the isothermal stage of the i-th temperature sensor, and fit the actual temperature change curve over time. ; Calculate the consistency coefficient during the isothermal stage The consistency coefficient of the isothermal stage Consistency coefficient threshold range with the set isothermal stage In comparison, if Belongs to the threshold range This indicates that the constant temperature phase of the hot air circulation system in the homogeneous cavity region monitored by the i-th sensor is normal. like Not within the threshold range This indicates that the constant temperature stage of the hot air circulation system in the homogenized cavity area monitored by the i-th sensor is abnormal, and an early warning should be issued to the staff immediately. The consistency coefficient of the isothermal stage The calculation process includes: First, calculate the difference between the temperature monitored by the i-th sensor and the overall temperature inside the homogenizing cavity during the isothermal period, denoted as A: ； Then, at the end of the isothermal period, the difference between the temperature monitored by the i-th sensor and the temperature of the entire homogenized cavity is calculated and denoted as B: ； Finally, the consistency coefficient of the isothermal stage is calculated based on A and B. : ； In the formula, n is the number of temperature sensors, i∈[1,n], This marks the start time of the isothermal phase. This marks the end of the constant temperature phase. , These are the weighting coefficients; The process for determining whether the cooling phase of the hot air circulation system is normal includes: The temperature monitoring system acquires real-time temperature data inside the homogenization chamber during the cooling phase and fits a curve showing the actual temperature change over time. ; Obtain the standard curve of temperature change inside the homogenization chamber over time during the cooling phase. ; Construct a rectangular coordinate system xoy and compare the actual temperature change curves over time within the xoy system. and temperature versus time standard curve Obtain the cooling coefficient ; The coefficient of heating and cooling and the set temperature rise coefficient threshold range In comparison, if Belongs to the threshold range This indicates that the cooling phase of the hot air circulation system is normal; like Not within the threshold range This indicates that the hot air circulation system is malfunctioning during the temperature control phase, and an immediate warning should be issued to the staff. The cooling coefficient The acquisition process includes: Based on the actual temperature change curve over time and temperature versus time standard curve The temperature rise coefficient was calculated. : ； In the formula, It is the initial moment of the cooling phase. It marks the end of the cooling phase.

2. The working method of the hot air circulation system for the tempered glass homogenizing furnace according to claim 1, characterized in that, The temperature is the average temperature inside the homogenization chamber.

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