Tunnel oven control method, system, electronic device, medium and program product

Abstract

This disclosure provides a tunnel oven control method, system, electronic equipment, medium, and program product, including a preheating section, a heating section, and a cooling section. The cooling section is connected to an isolator. A first lifting door and a second lifting door are respectively provided between the preheating section and the heating section, and between the heating section and the cooling section. In response to a vial moving from the preheating section to the heating section within the tunnel oven to a first preset distance from the first lifting door, the first lifting door is gradually opened at a first preset speed until it reaches a first preset height. Similarly, in response to a vial moving from the heating section to the cooling section within the tunnel oven to a second preset distance from the second lifting door, the second lifting door is gradually opened at a second preset speed until it reaches a second preset height. This tunnel oven control method, system, electronic equipment, medium, and program product can solve the problem of fixed-frequency fans being unable to stabilize the pressure difference and wind speed within the tunnel oven cavity, minimizing changes in pressure difference and wind speed during operation.

Description

Technical Field

[0001] This disclosure relates to a pharmaceutical equipment, and more particularly to a tunnel oven control method, system, electronic equipment, media, and program products. Background Technology

[0002] In the aseptic pharmaceutical industry, tunnel ovens are the main equipment used for sterilizing vials by removing pyrogens. The working principle of a tunnel oven is divided into three zones: a preheating zone, a heating zone, and a cooling zone. The cooling zone is connected to an isolator. The preheating zone is mainly used to preheat the vials before they enter the heating zone to reduce energy consumption. The heating zone is mainly a high-temperature zone, which is the key area for high-temperature sterilization and pyrogen removal of the vials. The cooling zone is mainly a temperature reduction zone after the vials have been sterilized by removing pyrogens. This is because after the vials leave the tunnel oven, they will enter the filling area for product filling. Therefore, there are certain requirements for product temperature control. Generally, the temperature of the vials should be controlled below 30°C when they leave the cooling zone.

[0003] In the current pharmaceutical industry, including the production processes of chemical and biological drugs, the filling mode has gradually evolved from the previous B+A (Bare-class background area, Class 10,000; Aseptic preparation area, Class A laminar flow, Class A is equivalent to Class 100, not completely sealed, not fully isolated) to the C+A (Bare-class background area, Class 100,000; Aseptic preparation area, Class A laminar flow, Class A is equivalent to Class 100, completely sealed, fully isolated) mode. The C+A mode uses an isolator with a Class C background area. This aims to reduce the requirements for plant facilities but increase the performance requirements for equipment, especially since the tunnel oven outlet will be directly connected to the isolator. The tunnel oven and the fully sealed isolator have specific requirements, including pressure differential control and airflow control. The pressure difference in the preheating section is less than that in the heating section, which is greater than that in the cooling section, which is less than that in the isolator. All pressure differences are relative to the pressure difference in the room at each stage. The guide value for controlling the wind speed is 0.36 m / s to 0.54 m / s, because the tunnel oven and isolator are key equipment for ensuring a sterile environment in the production of sterile preparations.

[0004] During pyrogen removal and sterilization in a tunnel oven, air is continuously supplied to the heating section via heating pipes and a blower to maintain the temperature at around 300℃. However, in typical tunnel ovens, the preheating, heating, and cooling sections are primarily controlled by fixed-frequency fans whose opening and frequency cannot be adjusted. Furthermore, the operation of a tunnel oven involves a cycle from empty to full load and back to empty, the entry and exit of vials, and the opening and closing of doors between stages. This causes the fixed-frequency fans to be unable to consistently provide the required pressure differential and airflow within the tunnel oven cavity. Summary of the Invention

[0005] The technical problem to be solved by this disclosure is to overcome the deficiencies in the prior art and provide a tunnel oven control method, system, electronic equipment, medium and program product that can accurately control the pressure difference and wind speed inside the tunnel oven.

[0006] This disclosure solves the above-mentioned technical problems through the following technical solution:

[0007] A method for controlling a tunnel oven, the tunnel oven comprising a preheating section, a heating section, and a cooling section arranged sequentially, the cooling section being connected to an isolator, and a first lifting door and a second lifting door respectively between the preheating section and the heating section, and between the heating section and the cooling section.

[0008] In response to the vial in the tunnel oven moving from the preheating section to the heating section to a first preset distance from the first lifting door, the first lifting door is gradually opened at a first preset speed until it reaches a first preset height.

[0009] In response to the vial in the tunnel oven moving from the heating section to the cooling section to a second preset distance from the second lifting door, the second lifting door is gradually opened at a second preset speed until it reaches a second preset height.

[0010] Preferably, a third lifting door is provided between the cooling section and the isolator.

[0011] In response to the vial in the tunnel oven moving from the cooling section to the isolator to a third preset distance from the third lifting door, the third lifting door is gradually opened to a third preset height at a third preset speed.

[0012] Preferably, the cooling section is equipped with an exhaust valve, and the control method further includes,

[0013] In response to the opening of the third lifting door, the exhaust valve of the cooling section gradually increases its opening by a preset range.

[0014] Preferably, the method further includes stopping the opening of the third lifting door in response to the pressure difference between the cooling section and the isolator being less than a preset difference value, until the pressure difference between the cooling section and the isolator is greater than or equal to the preset difference value.

[0015] Preferably, the method further includes a blower in the heating section.

[0016] In response to the first vial reaching the first position of the heating section, the frequency of the air supply fan in the heating section is reduced;

[0017] In response to the last vial reaching the second position of the heating section, the frequency of the air supply fan in the heating section is increased.

[0018] Preferably, the heating section is further provided with an air supply port, and the air supply port is provided with an air supply valve. The method further includes that the air supply valve cooperates with the air supply fan of the heating section to maintain the stability of the pressure difference and wind speed in the cooling section.

[0019] Another aspect of this disclosure provides a tunnel oven control system, the tunnel oven comprising a preheating section, a heating section, and a cooling section arranged sequentially, the cooling section being connected to an isolator, and a first lifting door and a second lifting door respectively between the preheating section and the heating section, and between the heating section and the cooling section.

[0020] The first response module is used to respond to the movement of the vial in the tunnel oven from the preheating section to the heating section to a first preset distance from the first lifting door, and to gradually open the first lifting door at a first preset speed until a first preset height.

[0021] The second response module, in response to the vial in the tunnel oven moving from the heating section to the cooling section to a second preset distance from the second lifting door, gradually opens the second lifting door at a second preset speed until it reaches a second preset height.

[0022] In another aspect of this disclosure, an electronic device is provided, including a memory, a processor, and a computer program stored in the memory and for running on the processor, wherein the processor executes the computer program to implement the tunnel oven control method described in any one of the above descriptions.

[0023] In another aspect of this disclosure, a computer-readable storage medium is provided having a computer program stored thereon, characterized in that the computer program, when executed by a processor, implements the tunnel oven control method described in any one of the above descriptions.

[0024] In another aspect of this disclosure, a computer program product is provided, comprising a computer program, characterized in that, when the computer program is executed by a processor, it implements the tunnel oven control method as described in any one of the preceding descriptions.

[0025] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of this disclosure.

[0026] The positive and progressive effects of this disclosure are as follows: The tunnel oven control method, system, electronic equipment, medium, and program products provided by this disclosure can, without changing the existing equipment, regulate the opening time and speed of the lifting doors between each section when vials are sequentially introduced into the tunnel oven. This reduces the gap between the two sections of the lifting doors and minimizes the impact of pressure difference fluctuations. Simultaneously, by adjusting the opening degree of the exhaust valve and the frequency of the heating section fan, it can better solve the problem of fixed-frequency fans being unable to stabilize the pressure difference and wind speed within the tunnel oven cavity, minimizing changes in pressure difference and wind speed during operation. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of a tunnel oven, which is an exemplary embodiment of the present disclosure.

[0028] Figure 2 This is a schematic flowchart of the tunnel oven control method provided in Embodiment 1 of this disclosure;

[0029] Figure 3 This is a schematic flowchart of the tunnel oven control method provided in Embodiment 2 of this disclosure;

[0030] Figure 4 This is a schematic flowchart of the tunnel oven control method provided in Embodiment 3 of this disclosure;

[0031] Figure 5 This is a schematic diagram of the tunnel oven control system provided in Embodiment 4 of this disclosure;

[0032] Figure 6 This is a schematic diagram of the tunnel oven control system provided in Embodiment 5 of this disclosure;

[0033] Figure 7 This is a schematic diagram of the tunnel oven control system provided in Embodiment 6 of this disclosure;

[0034] Figure 8 This is a schematic diagram of the structure of an electronic device shown in Embodiment 7 of this disclosure. Detailed Implementation

[0035] The present disclosure is further illustrated below by way of embodiments, but the present disclosure is not limited to the scope of the embodiments described herein.

[0036] The prefixes such as "first" and "second" used in this disclosure are merely for distinguishing different descriptive objects and do not limit the position, order, priority, quantity, or content of the described objects. The use of ordinal numbers and other prefixes used to distinguish descriptive objects in this disclosure does not constitute a limitation on the described objects. The description of the described objects is given in the claims or the context of the embodiments, and should not be construed as an unnecessary limitation. Furthermore, in the description of this embodiment, unless otherwise stated, "multiple" means two or more.

[0037] like Figure 1 The diagram shown is a structural schematic of the tunnel oven disclosed herein. The tunnel oven includes a preheating section, a heating section, and a cooling section arranged sequentially. The outlet of the tunnel oven is connected to an isolator, meaning the cooling section is connected to the isolator. The preheating and cooling sections are equipped with exhaust fans, and the heating section is equipped with a supply fan. The exhaust fans in the preheating section and the supply fans in the heating section are generally fixed-frequency fans and do not automatically adjust their frequency according to the environment. The exhaust fan in the cooling section is a variable-frequency fan. Both the cooling and preheating sections are equipped with exhaust valves, whose opening degree can be adjusted.

[0038] A first lifting door that moves vertically is provided between the preheating section and the heating section; a second lifting door that moves vertically is provided between the heating section and the cooling section; and a third lifting door is provided between the cooling section and the isolator. The cooling section is also provided with an air supply inlet, which is equipped with an air supply valve for supplying air volume internally.

[0039] After the vials are washed in the bottle washing machine, they enter the tunnel oven. After sterilization, the small doors of the preheating, heating, and cooling sections of the tunnel oven are closed in the cooling section. As the vials enter the tunnel oven, the first lifting door between the preheating and heating sections, the second lifting door between the heating and cooling sections, and the third lifting door between the cooling section and the isolator are opened sequentially.

[0040] As the tunnel oven transitions from an unloaded state to a fully loaded state, the opening of the small doors in sequence will affect the airflow and pressure difference within the tunnel oven cavity. After production is completed, the tunnel oven will return from a fully loaded state to an unloaded state, at which point the airflow and pressure difference within the tunnel oven cavity will also change and fluctuate.

[0041] Tunnel ovens and isolators are key equipment for ensuring a sterile environment in the production of aseptic preparations. Therefore, tunnel ovens and fully sealed isolators have specific requirements, including pressure differential control and air velocity control. The pressure differential in the preheating section should be less than that in the heating section, the pressure differential in the heating section should be greater than that in the cooling section, and the pressure differential in the cooling section should be less than that in the isolator. The guideline for controlling the air velocity within the entire tunnel oven is 0.36 m / s to 0.54 m / s.

[0042] Example 1

[0043] Figure 2 This is a schematic flowchart of a tunnel oven control method provided as an exemplary embodiment of the present disclosure.

[0044] The tunnel oven includes a preheating section, a heating section, and a cooling section in sequence. The cooling section is connected to an isolator. The preheating and cooling sections are equipped with exhaust fans for ventilation. The heating section includes a blower and a heating device. A first lifting door and a second lifting door, which can be switched on and off, are also provided between the preheating and heating sections, and between the heating and cooling sections, respectively. The method specifically includes...

[0045] S101, in response to the vial in the tunnel oven moving from the preheating section to the heating section to a first preset distance from the first lifting door, the first lifting door is gradually opened at a first preset speed until it reaches a first preset height;

[0046] S102, in response to the vial in the tunnel oven moving from the heating section to the cooling section to a second preset distance from the second lifting door, the second lifting door is gradually opened at a second preset speed until it reaches a second preset height.

[0047] In this method, the first preset height and the second preset height are 6mm-15mm higher than the height of the vial. The first preset distance and the second preset distance are 25mm-150mm, and the first preset speed and the second preset speed are 2mm / s-4mm / s.

[0048] Preferably, the first preset distance and the second preset distance can be the same or different, the first preset height and the second preset height can be the same or different, and the first preset speed and the second preset speed can be the same or different. Specifically, they can be determined based on the length of each section of the tunnel oven and the frequency or speed of the exhaust or supply fan in each section.

[0049] Because the tunnel oven operates on a cycle of empty to full load and then back to empty, vials sequentially enter the oven, moving from the preheating section to the heating section, then to the cooling section, and finally exiting to the isolator. As the lifting doors between each section open, the different pressure differentials in the preheating, heating, and cooling sections cause instability and fluctuations in pressure differentials and airflow due to air circulation. Therefore, controlling the opening speed of the lifting doors between sections helps reduce the changes in airflow and pressure differentials caused by the movement of the vials.

[0050] As vials enter the tunnel oven sequentially along the conveyor belt, the distances between the vials and the lifting doors in the preheating, heating, and cooling sections are adjusted and set so that the lifting doors are opened only when the vials are close to them. This reduces the gap between the two sections of the lifting doors and minimizes the impact of pressure differential fluctuations.

[0051] The tunnel oven control method provided in this embodiment can solve the problem that the fixed frequency fan cannot stabilize the pressure difference and wind speed inside the tunnel oven cavity, and reduce the changes in pressure difference and wind speed during operation to a minimum.

[0052] Example 2

[0053] Based on Example 1, such as Figure 3 The diagram shown is a flowchart of the tunnel oven control method provided in Example 2.

[0054] A third lifting door is provided between the cooling section and the isolator. The cooling section is also provided with an exhaust valve. The method of this embodiment further includes...

[0055] S203, in response to the vial in the tunnel oven moving from the cooling section to the isolator to a third preset distance from the third lifting door, the third lifting door is gradually opened to a third preset height at a third preset speed.

[0056] S204, in response to the opening of the third lifting door, the exhaust valve of the cooling section gradually increases its opening by a preset opening range.

[0057] The third preset height is 6mm-15mm higher than the height of the vial. The third preset distance is 25mm-150mm, and the third preset speed is 2mm / s-4mm / s. These can be adjusted according to the parameters of different tunnel ovens.

[0058] The air velocity and pressure difference within the tunnel oven cavity are primarily controlled by the supply air fans in the heating section, the exhaust air fans in the preheating section, and the exhaust air fans in the cooling section. Generally, pressure difference fluctuations are significantly influenced by the exhaust air fans and their opening degrees in the preheating and cooling sections, as well as the distance the vials travel. The air velocity within the tunnel oven cavity is primarily affected by the frequency of the supply air fans in the heating section.

[0059] Especially when the third lifting door between the final cooling section and the isolator of the tunnel oven is opened, the pressure difference in the isolator is usually much greater than that in the cooling section. Therefore, when the third lifting door opens, the pressure difference will fluctuate significantly. To stabilize this fluctuation, the third lifting door is opened gradually, and during this process, the exhaust valve of the cooling section is adjusted to increase its opening by a preset margin. Specifically, as the lifting door opens, for example, for every 5% of its third preset height, the exhaust valve opening also increases by 5% of its maximum opening, with the initial opening of the exhaust valve being 20%. Of course, those skilled in the art will understand that this data can be set according to different parameters of the tunnel oven. The key point is that during the opening of the third lifting door, as the opening of the exhaust valve in the cooling section increases, both the isolator fan and the cooling section exhaust fan are variable frequency fans, and can be automatically adjusted over time to an acceptable range. This maintains the stability of the pressure difference between the cooling section and the isolator.

[0060] Preferably, the control method further includes the step of,

[0061] S205, in response to the pressure difference between the cooling section and the isolator being less than a preset difference value, the opening of the third lifting door is stopped until the pressure difference between the cooling section and the isolator is greater than or equal to the preset difference value.

[0062] The pressure difference of the isolator is much greater than that of the cooling section. Therefore, the preset difference value is 5 Pa. If the difference between the two pressure differences is greater than or equal to 5 Pa, it means that the pressure difference between the two is relatively stable. If it is less than the preset difference value, it means that the pressure difference of the cooling section changes greatly. The variable frequency fans of the cooling section and the isolator cannot stabilize the pressure difference between the two sections well. Therefore, it is necessary to pause the opening of the third lifting door until the pressure difference between the cooling section and the isolator is greater than or equal to the preset difference value before reopening the third lifting door.

[0063] In this embodiment, by controlling the gradual opening of the third lifting door between the cooling section and the isolator, and adjusting the opening of the cooling section exhaust valve, the pressure difference between the cooling section and the isolator can be stabilized, thereby preventing the opening of the door between the cooling section and the isolator from having a significant impact on the wind speed and pressure difference in the entire tunnel oven.

[0064] Example 3

[0065] Based on Example 1 or Example 2, such as Figure 4 As shown, the tunnel control method further includes,

[0066] S301, in response to the first vial reaching the first position of the heating section, the frequency of the air supply fan in the heating section is reduced;

[0067] S302, in response to the last vial moving to the second position of the heating section, the frequency of the air supply fan in the heating section is increased.

[0068] Preferably, the first position is located at 1 / 3 to 3 / 4 of the total length of the heating section, and the second position is located at 1 / 2 to 1 / 4 of the total length of the heating section.

[0069] The reduction of the frequency of the heating section air supply fan is to reduce its frequency by 5%-15%; the increase of the frequency of the air supply fan is to increase the frequency of the air supply fan by 5%-15%.

[0070] Because the heating section goes through two processes: from no load to full load and from full load to no load, if the frequency of the heating section's air supply fan is not adjusted, the air velocity will increase and decrease. Therefore, by adjusting the frequency of the heating section's air supply fan, the frequency can be reduced when going from no load to full load and increased when going from full load to no load, thus ensuring the relative stability of the air velocity and pressure difference within the heating section.

[0071] Furthermore, the heating section is also provided with an air supply port, and the air supply port is provided with an air supply valve. The method also includes that the air supply valve cooperates with the air supply fan of the heating section to maintain the stability of the pressure difference and wind speed in the cooling section.

[0072] The heating section only has a supply fan and not an exhaust fan. Therefore, the installation of the air supply valve and air supply port can work in conjunction with the supply fan to ensure a stable air velocity and pressure difference within the heating section.

[0073] Example 4

[0074] Corresponding to the method embodiments of the foregoing embodiments 1-3, this disclosure also provides embodiments of a tunnel oven control system.

[0075] Figure 5 This is a schematic diagram of a tunnel oven control system provided as an exemplary embodiment of the present disclosure. The tunnel oven includes a preheating section, a heating section, and a cooling section in sequence. The cooling section is connected to an isolator. The preheating and cooling sections are equipped with exhaust fans for ventilation. The heating section includes a blower and a heating device. A first lifting door and a second lifting door, which can be switched, are respectively located between the preheating and heating sections and between the heating and cooling sections. The control system includes...

[0076] First response module 1 is used to respond to the movement of a vial in the tunnel oven from the preheating section to the heating section to a first preset distance from the first lifting door, and to gradually open the first lifting door at a first preset speed until a first preset height.

[0077] The second response module 2 is used to respond to the movement of vials in the tunnel oven from the heating section to the cooling section to a second preset distance from the second lifting door, and to gradually open the second lifting door at a second preset speed until it reaches a second preset height.

[0078] In this system, the first preset height and the second preset height are 6mm-15mm higher than the height of the vial. The first preset distance and the second preset distance are 25mm-150mm, and the first preset speed and the second preset speed are 2mm / s-4mm / s.

[0079] Preferably, the first preset distance and the second preset distance can be the same or different, the first preset height and the second preset height can be the same or different, and the first preset speed and the second preset speed can be the same or different. Specifically, they can be determined based on the length of each section of the tunnel oven and the frequency or speed of the exhaust or supply fan in each section.

[0080] Because the tunnel oven operates on a cycle of empty to full load and then back to empty, vials sequentially enter the oven, moving from the preheating section to the heating section, then to the cooling section, and finally exiting to the isolator. As the lifting doors between each section open, the different pressure differentials in the preheating, heating, and cooling sections cause instability and fluctuations in pressure differentials and airflow due to air circulation. Therefore, controlling the opening speed of the lifting doors between sections helps reduce the changes in airflow and pressure differentials caused by the movement of the vials.

[0081] As vials enter the tunnel oven sequentially along the conveyor belt, the distances between the vials and the lifting doors in the preheating, heating, and cooling sections are adjusted and set so that the lifting doors are opened only when the vials are close to them. This reduces the gap between the two sections of the lifting doors and minimizes the impact of pressure differential fluctuations.

[0082] The tunnel oven control system provided in this embodiment can address the problem that the fixed-frequency fan of the oven cannot stabilize the pressure difference and wind speed inside the tunnel oven cavity, and minimize the changes in pressure difference and wind speed during operation.

[0083] Example 5

[0084] like Figure 6 As shown, an embodiment of a tunnel oven control system is provided. Based on embodiment 5 above, the system further includes:

[0085] The third response module 3 is used to respond to the movement of vials in the tunnel oven from the cooling section to the isolator to a third preset distance from the third lifting door, and to gradually open the third lifting door to a third preset height at a third preset speed.

[0086] The exhaust valve control module 4, in response to the opening of the third lifting door, gradually increases the opening of the exhaust valve of the cooling section by a preset opening range.

[0087] The third preset height is 6mm-15mm higher than the height of the vial. The third preset distance is 25mm-150mm, and the third preset speed is 2mm / s-4mm / s. These can be adjusted according to the parameters of different tunnel ovens.

[0088] The third response module 3 also includes,

[0089] The pause control module 31 is used to stop the opening of the third lifting door in response to the pressure difference between the cooling section and the isolator being less than a preset difference value, until the pressure difference between the cooling section and the isolator is greater than or equal to the preset difference value.

[0090] The pressure difference of the isolator is much greater than that of the cooling section. Therefore, the preset difference value is 5 Pa. If the difference between the two pressure differences is greater than or equal to 5 Pa, it means that the pressure difference between the two is relatively stable. If it is less than the preset difference value, it means that the pressure difference of the cooling section changes greatly. The variable frequency fans of the cooling section and the isolator cannot stabilize the pressure difference between the two sections well. Therefore, it is necessary to pause the opening of the third lifting door until the pressure difference between the cooling section and the isolator is greater than or equal to the preset difference value before reopening the third lifting door.

[0091] In this embodiment, by controlling the gradual opening of the third lifting door between the cooling section and the isolator, and adjusting the opening degree of the cooling section exhaust valve, the pressure difference between the cooling section and the isolator can be stabilized, thereby preventing the opening of the door between the cooling section and the isolator from having a significant impact on the air velocity and pressure difference in the entire tunnel oven. The specific control method of this embodiment can be referred to Embodiment 1 or 2, and will not be repeated here.

[0092] Example 6

[0093] like Figure 7 The diagram shown is a block diagram of a tunnel oven control system provided in this embodiment. Based on embodiments 4 or 5, this tunnel oven control system further includes...

[0094] The first frequency control module 51 is used to reduce the frequency of the air blower in the heating section in response to the first vial running to the first position of the heating section;

[0095] The second frequency control module 52 is used to increase the frequency of the air blower in the heating section in response to the last vial running to the second position of the heating section.

[0096] Preferably, the first position is 1 / 3 to 3 / 4 of the total length of the heating section, and the second position is 1 / 2 to 1 / 4 of the total length of the heating section.

[0097] The reduction of the frequency of the heating section air supply fan is to reduce its frequency by 5%-15%; the increase of the frequency of the air supply fan is to increase the frequency of the air supply fan by 5%-15%.

[0098] Because the heating section goes through two processes: from no load to full load and from full load to no load, if the frequency of the heating section's air supply fan is not adjusted, the air velocity will increase and decrease. Therefore, by adjusting the frequency of the heating section's air supply fan, the frequency can be reduced when going from no load to full load and increased when going from full load to no load, thus ensuring the relative stability of the air velocity and pressure difference within the heating section.

[0099] Furthermore, the heating section is also provided with an air supply port, and the air supply port is provided with an air supply valve. The method also includes that the air supply valve cooperates with the air supply fan of the heating section to maintain the stability of the pressure difference and wind speed in the cooling section.

[0100] Because the heating section only has a supply fan and not an exhaust fan, the installation of the make-up air valve and make-up air inlet can work in conjunction with the supply fan to ensure a stable air velocity and pressure difference within the heating section.

[0101] For the system embodiments, since they basically correspond to the method embodiments, the relevant parts can be referred to in the description of the method embodiments. The system embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate. The components as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the modules can be selected to achieve the purpose of this disclosure according to actual needs.

[0102] Example 7

[0103] Figure 8 This is a schematic diagram illustrating the structure of an electronic device according to an example embodiment of the present disclosure. The electronic device includes a memory, a processor, and a computer program stored in the memory and used to run on the processor. When the processor executes the computer program, it implements the tunnel oven control method described in any of the above embodiments. Figure 8 The electronic device 80 shown is merely an example and should not impose any limitation on the functionality and scope of use of the embodiments disclosed herein.

[0104] like Figure 8 As shown, the electronic device 80 can be manifested as a general-purpose computing device, such as a server device. The components of the electronic device 80 may include, but are not limited to: at least one processor 81, at least one memory 82, and a bus 83 connecting different system components (including memory 82 and processor 81).

[0105] Bus 83 includes a data bus, an address bus, and a control bus.

[0106] The memory 82 may include volatile memory, such as random access memory (RAM) 821 and / or cache memory 822, and may further include read-only memory (ROM) 823.

[0107] The memory 82 may also include a program tool 825 (or utility) having a set (at least one) program module 824, including but not limited to: an operating system, one or more application programs, other program modules, and program data, each or some combination of these examples may include an implementation of a network environment.

[0108] The processor 81 executes various functional applications and data processing by running computer programs stored in the memory 82, such as the tunnel oven control method provided in any of the above embodiments.

[0109] Electronic device 80 can also communicate with one or more external devices 84 (e.g., keyboard, pointing device, etc.). This communication can be performed through input / output (I / O) interface 85. Furthermore, electronic device 80 can also communicate with one or more networks (e.g., local area network (LAN), wide area network (WAN), and / or public network, such as the Internet) via network adapter 86. As shown, network adapter 86 communicates with other modules of electronic device 80 via bus 83. It should be understood that, although not shown in the figure, other hardware and / or software modules can be used in conjunction with electronic device 80, including but not limited to: microcode, device drivers, redundant processors, external disk drive arrays, RAID (disk array) systems, tape drives, and data backup storage systems.

[0110] It should be noted that although several units / modules or sub-units / modules of the electronic device have been mentioned in the detailed description above, this division is merely exemplary and not mandatory. In fact, according to embodiments of this disclosure, the features and functions of two or more units / modules described above can be embodied in one unit / module. Conversely, the features and functions of one unit / module described above can be further divided and embodied by multiple units / modules.

[0111] Example 8

[0112] This disclosure also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the tunnel oven control method provided in any of the above embodiments.

[0113] The readable storage medium may be more specifically adopted, including but not limited to: portable disk, hard disk, random access memory, read-only memory, erasable programmable read-only memory, optical storage device, magnetic storage device, or any suitable combination thereof.

[0114] Example 9

[0115] This disclosure also provides a computer program product, including a computer program that, when executed by a processor, implements the tunnel oven control method described in any of the above embodiments.

[0116] The program code for executing the computer program product of this disclosure can be written in any combination of one or more programming languages, and the program code can be executed entirely on a user device, partially on a user device, as a stand-alone software package, partially on a user device and partially on a remote device, or entirely on a remote device.

[0117] While specific embodiments of this disclosure have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this disclosure is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this disclosure, but all such changes and modifications fall within the scope of protection of this disclosure.

Claims

1. A method for controlling a tunnel oven, the tunnel oven comprising a preheating section, a heating section, and a cooling section arranged sequentially, the cooling section being connected to an isolator, and a first lifting door and a second lifting door respectively between the preheating section and the heating section, and between the heating section and the cooling section, characterized in that, In response to the vial in the tunnel oven moving from the preheating section to the heating section to a first preset distance from the first lifting door, the first lifting door is gradually opened at a first preset speed until it reaches a first preset height. In response to the vial in the tunnel oven moving from the heating section to the cooling section to a second preset distance from the second lifting door, the second lifting door is gradually opened at a second preset speed until it reaches a second preset height; In particular, by controlling the opening speed of the lifting gate between each section, it is helpful to reduce the changes in wind speed and pressure difference caused by the operation of the vial; As the vials enter the tunnel oven sequentially along the conveyor belt, they are moved to a predetermined distance from the lifting door before the lifting door is opened to reduce the impact of pressure differential fluctuations.

2. The tunnel oven control method of claim 1, wherein, A third lifting door is provided between the cooling section and the isolator. In response to the vial in the tunnel oven moving from the cooling section to the isolator to a third preset distance from the third lifting door, the third lifting door is gradually opened to a third preset height at a third preset speed.

3. The tunnel oven control method of claim 2, wherein, The cooling section is equipped with an exhaust valve, and the control method further includes... In response to the opening of the third lifting door, the exhaust valve of the cooling section gradually increases its opening by a preset range.

4. The tunnel oven control method of claim 3, wherein, The method further includes stopping the opening of the third lifting door in response to the pressure difference between the cooling section and the isolator being less than a preset difference value, until the pressure difference between the cooling section and the isolator is greater than or equal to the preset difference value.

5. The tunnel oven control method of claim 1, wherein, The method further includes the heating section having a blower. In response to the first vial reaching the first position of the heating section, the frequency of the air supply fan in the heating section is reduced; In response to the last vial reaching the second position of the heating section, the frequency of the air supply fan in the heating section is increased.

6. The tunnel oven control method of claim 5, wherein, The heating section is also provided with an air supply port, and the air supply port is provided with an air supply valve. The method further includes that the air supply valve cooperates with the air supply fan of the heating section to maintain the stability of the pressure difference and wind speed in the cooling section.

7. A tunnel oven control system, the tunnel oven comprising a preheating section, a heating section, and a cooling section arranged sequentially, the cooling section being connected to an isolator, and a first lifting door and a second lifting door respectively between the preheating section and the heating section, and between the heating section and the cooling section, characterized in that, include, The first response module is used to respond to the movement of the vial in the tunnel oven from the preheating section to the heating section to a first preset distance from the first lifting door, and to gradually open the first lifting door at a first preset speed until a first preset height. The second response module, in response to the vial in the tunnel oven moving from the heating section to the cooling section to a second preset distance from the second lifting door, gradually opens the second lifting door at a second preset speed until it reaches a second preset height; In particular, by controlling the opening speed of the lifting gate between each section, it is helpful to reduce the changes in wind speed and pressure difference caused by the operation of the vial; As the vials enter the tunnel oven sequentially along the conveyor belt, they are moved to a predetermined distance from the lifting door before the lifting door is opened to reduce the impact of pressure differential fluctuations.

8. An electronic device comprising a memory, a processor, and a computer program stored on the memory for running on the processor, characterized in that, When the processor executes the computer program, it implements the tunnel oven control method according to any one of claims 1 to 6.

9. A computer-readable storage medium having stored thereon a computer program, characterized in that, When the computer program is executed by the processor, it implements the tunnel oven control method according to any one of claims 1 to 6.

10. A computer program product comprising a computer program, characterized in that, When the computer program is executed by the processor, it implements the tunnel oven control method as described in any one of claims 1-6.

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