Intelligent nitrogen charging device and control system

Abstract

The utility model provides an intelligent nitrogen charging device and a control system, and belongs to the technical field of circuit board production, the intelligent nitrogen charging device comprises a nitrogen charging main body, N nitrogen charging nozzles and an air inlet pipe are arranged on the nitrogen charging main body, the air inlet pipe is externally connected with an air supply device, an electromagnetic valve is arranged at an air outlet of the air supply device, and N is a natural number greater than 1. The timing system comprises a timer and a controller, and the controller is electrically connected with the timer and the electromagnetic valve; when the nitrogen charging nozzle is connected with the nitrogen charging port of the heat exchanger, the timer starts timing, and the controller controls the electromagnetic valve to be opened. According to the intelligent nitrogen charging device, automatic timing can be achieved through the timing system, so that it is guaranteed that the nitrogen charging time can meet the set requirement, the nitrogen charging amount is guaranteed, and the manufacturing quality of the heat exchanger can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board production, in particular to an intelligent nitrogen filling device and a control system. Background Art

[0002] Today, with the increasing popularity of automated equipment, enterprises widely use automated equipment to replace traditional manual operations to improve production efficiency and product quality. However, in the production process of refrigeration equipment such as evaporators and condensers, the nitrogen filling link in welding still relies on manual operation. In the production of evaporators and condensers, during the welding process, in order to prevent the copper pipe from oxidizing at high temperature to generate oxide scale, which will then block the pipeline, it is necessary to use a nitrogen filling device to protect the evaporator and condenser with nitrogen. The existing traditional nitrogen filling tooling generally lacks a timing system, and the nitrogen filling time completely depends on the manual counting of employees. This method is not only inefficient but also prone to errors. If the nitrogen filling time is too short, the generation of oxide scale in the copper pipe cannot be effectively inhibited, so the protective effect of nitrogen filling cannot be fully exerted; conversely, if the nitrogen filling time is too long, the production cycle will be increased unnecessarily, affecting the overall production efficiency.

[0003] In addition, manual counting may also lead to a series of other problems, such as employee fatigue, inattention, etc., further increasing the uncertainty and risk in the nitrogen filling process.

[0004] Therefore, there is an urgent need for an intelligent tooling that can automatically time and control the nitrogen filling process to overcome the deficiencies of traditional nitrogen filling tooling. Summary of the Utility Model

[0005] To overcome the problems existing in the related art, one of the purposes of the utility model is to provide an intelligent nitrogen filling device, which can automatically time through a timing system, so as to ensure that the nitrogen filling time can meet the set requirements, ensure the nitrogen filling volume, and thus improve the manufacturing quality of the heat exchanger.

[0006] An intelligent nitrogen filling device includes a nitrogen filling main body, on which N nitrogen filling nozzles and an inlet pipe are provided. The inlet pipe is externally connected to a gas supply device, and a solenoid valve is provided at the outlet of the gas supply device. N is a natural number greater than 1;

[0007] It further includes a timing system, which includes a timer and a controller. The controller is electrically connected to the timer and the solenoid valve; when the nitrogen filling nozzle is connected to the nitrogen filling port of the heat exchanger, the timer starts timing, and the controller controls the solenoid valve to open.

[0008] During the operation of the intelligent nitrogen filling device, the timer will start only when the nitrogen filling nozzle is connected to the nitrogen filling port of the heat exchanger. If the nitrogen filling nozzle is not connected to the nitrogen filling port of the heat exchanger, the timer will not start. This design can associate the nitrogen filling process with timing to monitor the nitrogen filling time. The design of the timing system and the controller can automatically start the timing and automatically close the solenoid valve after reaching the preset time, thus accurately controlling the nitrogen filling time. This avoids the inaccuracy and errors of manual timing and improves the automation degree of the nitrogen filling process. Accurately controlling the nitrogen filling time can ensure that the nitrogen filling amount meets the set requirements, neither excessive nor insufficient. Appropriate nitrogen filling can effectively prevent the generation of oxide scales during the high-temperature welding process of the heat exchanger and improve the manufacturing quality and performance of the heat exchanger. Moreover, due to the accurate control of the nitrogen filling time, this device helps to improve the overall manufacturing quality of the heat exchanger. A stable nitrogen filling process can reduce problems such as pipeline blockage caused by oxide scales and improve the reliability and service life of the product.

[0009] In practical applications, the device is flexibly designed and can adjust the timing system according to needs to adapt to heat exchangers of different models and specifications. By adjusting the setting of the timer, different nitrogen filling requirements can be easily met, and the applicable range is wide.

[0010] In a preferred technical solution of the present utility model, the timing system further includes a driving power source, and the output end of the driving power source is electrically connected to the timer; the timer is provided with a first connector and a second connector, an insulating connection sleeve is provided on the first connector, the insulating connection sleeve is sleeved on one of the nitrogen filling nozzles, and a conductive coil is provided outside the insulating connection sleeve; the second connector is electrically connected to one of the nitrogen filling nozzles, and the driving power source is electrically connected to the second connector;

[0011] When the nitrogen filling nozzle sleeved with the insulating connection sleeve is connected to the heat exchanger, the conductive coil contacts the copper pipe of the heat exchanger, so that a conductive path is formed between the first connector and the second connector of the timer.

[0012] In a preferred technical solution of the present utility model, the cross-section of the insulating connection sleeve is circular or polygonal.

[0013] The drive power supply provides the working power supply for the timer. By improving the circuit of the timer, such as connecting the first connector to the insulating connection sleeve and electrically connecting the second connector to the nitrogen filling nozzle. During the use of this timing system, the conductive coil is in contact with the copper tube of the heat exchanger, and a conductive path can be formed among the drive power supply, the conductive coil, the timer, and the copper tube of the heat exchanger, enabling the timer to be powered on and work, thereby performing nitrogen filling timing. This design enables the entire device to automatically start timing when the nitrogen filling nozzle with the insulating connection sleeve is connected to the heat exchanger, and automatically stop nitrogen filling when the preset time is reached. This way of precisely controlling the nitrogen filling time ensures the stability and accuracy of the nitrogen filling process, thus improving the manufacturing quality of the heat exchanger. Triggering the timer to start by using the conductive coil in contact with the copper tube of the heat exchanger not only realizes intelligent control but also achieves the purpose of obtaining great benefits with small modifications.

[0014] In a preferred technical solution of the present utility model, a locking member is provided on the outer wall of the insulating connection sleeve, and several locking members are arranged along the axial direction of the insulating connection sleeve.

[0015] The design of the locking member can enhance the connection stability between the insulating connection sleeve and the nitrogen filling nozzle. During the nitrogen filling process, due to possible external forces and vibrations, the locking member can ensure that the insulating connection sleeve does not loosen or fall off, thereby guaranteeing the stability and reliability of the conductive path. In addition, the design of the locking member makes the installation and disassembly of the insulating connection sleeve more convenient. Staff can easily fix the insulating connection sleeve on the nitrogen filling nozzle through the locking member or disassemble it for cleaning, replacement, etc. operations. This not only improves work efficiency but also reduces maintenance costs.

[0016] In a preferred technical solution of the present utility model, a wire groove is provided on the outer wall of the insulating connection sleeve, and the conductive coil is sleeved in the wire groove; and after the conductive coil is sleeved in the wire groove, the conductive coil protrudes from the outer wall of the insulating connection sleeve.

[0017] The design of the wire groove enables the conductive coil to be firmly sleeved on the outer wall of the insulating connection sleeve, thereby enhancing the connection stability and reliability between the conductive coil, the nitrogen filling nozzle, and the copper tube of the heat exchanger. During the nitrogen filling process, this stable connection can ensure the unobstructed conductive path and guarantee the precise control of the nitrogen filling time. The wire groove not only improves the connection stability but also further enhances the safety of the entire device. By standardizing the running direction and position of the conductive coil, the wire groove can prevent the conductive coil from accidentally falling off or short-circuiting due to external forces during the nitrogen filling process, thus avoiding potential safety hazards such as electric shock and fire. And the wire groove can protect the conductive coil from being eroded and worn by the external environment, so the durability and service life of the entire device can be improved.

[0018] In a preferred technical solution of the present utility model, an indicator light is further included, and the indicator light is electrically connected to the controller.

[0019] The addition of the indicator light enables the staff to intuitively understand the working state of the nitrogen filling device. When the nitrogen filling starts, the indicator light lights up, indicating that the nitrogen filling is in progress; when the nitrogen filling ends, the indicator light goes out or changes color, indicating that the nitrogen filling is completed. This intuitive indication method helps the staff to timely and accurately master the nitrogen filling progress and improve work efficiency. By observing the state of the indicator light, the staff can judge whether the nitrogen filling is completed without frequently checking the timer or the controller. This reduces the operation steps and improves the operation convenience.

[0020] In a preferred technical solution of the present utility model, a communication module is further included. The communication module is arranged on the controller, and the communication module is used for electrically connecting to the cloud network.

[0021] The addition of the communication module enables the intelligent nitrogen filling device to be electrically connected to the cloud network, thereby realizing remote monitoring and management. The staff can view information such as the working state, nitrogen filling progress, and historical data of the nitrogen filling device in real time through the cloud platform, and master the operation situation of the device without being on-site. The communication module can upload the working data of the nitrogen filling device to the cloud platform in real time, facilitating data collection, storage, and analysis. By mining and utilizing these data, the staff can understand the laws and problems in the nitrogen filling process, providing strong support for optimizing the nitrogen filling process and improving product quality.

[0022] In a preferred technical solution of the present utility model, a pressure detection device is arranged on each nitrogen filling nozzle.

[0023] The addition of the pressure detection device enables the pressure on each nitrogen filling nozzle to be monitored in real time. This ensures the accuracy and stability of the pressure during the nitrogen filling process, thereby improving the nitrogen filling effect and product quality. By monitoring the pressure of the nitrogen filling nozzle in real time, the staff can more precisely control the nitrogen filling process and ensure the precise matching of the nitrogen filling pressure and time. This helps to improve the accuracy and controllability of nitrogen filling and reduce production problems caused by improper pressure. Once the nitrogen filling pressure is too high or too low, the staff can quickly take measures to handle it, avoiding the expansion of faults or more serious production problems.

[0024] The second object of the present utility model is to provide a control system, and the control system is applied to the intelligent nitrogen filling device as described above.

[0025] This control system is used for automatically controlling the above-mentioned intelligent nitrogen filling device, which can significantly improve the automation level, stability, and reliability of the nitrogen filling process, optimize the nitrogen filling process, and improve product quality.

[0026] The beneficial effects of the present utility model are as follows:

[0027] An intelligent nitrogen filling device provided by the present utility model includes a nitrogen filling main body, on which N nitrogen filling nozzles and an air inlet pipe are provided. The air inlet pipe is externally connected to a gas supply device, and a solenoid valve is provided at the air outlet of the gas supply device. N is a natural number greater than 1. It also includes a timing system, which includes a timer and a controller. The controller is electrically connected to the timer and the solenoid valve. When the nitrogen filling nozzle is connected to the nitrogen filling port of the heat exchanger, the timer starts timing, and the controller controls the solenoid valve to open. During the working process of this intelligent nitrogen filling device, the timer will only start when the nitrogen filling nozzle is connected to the nitrogen filling port of the heat exchanger. If the nitrogen filling nozzle is not connected to the nitrogen filling port of the heat exchanger, the timer will not start. This design can associate the nitrogen filling process with timing to monitor the nitrogen filling time. The nitrogen filling device of this application can automatically start timing through the timing system and the controller, and automatically close the solenoid valve after reaching the preset time, so as to accurately control the nitrogen filling time. This avoids the inaccuracy and error of manual timing, and improves the automation degree of the nitrogen filling process. And accurately controlling the nitrogen filling time can ensure that the nitrogen filling amount meets the set requirements, neither excessive nor insufficient. Appropriate nitrogen filling can effectively prevent the generation of oxide scale during the high-temperature welding process of the heat exchanger, and improve the manufacturing quality and performance of the heat exchanger. The automatic control of the entire nitrogen filling process reduces manual intervention, makes the nitrogen filling process more efficient, and has significant cost benefits, which can reduce the rework and repair costs caused by product quality problems.

[0028] This application also provides a control system applied to the intelligent nitrogen filling device as described above. This control system can perform automatic control on the device, thereby improving the automation level, stability and reliability of the nitrogen filling process, optimizing the nitrogen filling process and improving the product quality. Brief Description of the Drawings

[0029] Figure 1 is a schematic structural diagram of the intelligent nitrogen filling device provided in the embodiment of the present utility model;

[0030] Figure 2 is a schematic structural diagram of the nitrogen filling main body provided in the embodiment of the present utility model;

[0031] Figure 3 is a schematic structural diagram of the insulating connection sleeve provided in the embodiment of the present utility model;

[0032] Figure 4 is a schematic structural diagram of the conductive coil arranged on the insulating connection sleeve provided in the embodiment of the present utility model;

[0033] Figure 5 is a schematic structural diagram when the timer forms an electrical conduction path through a copper tube provided in the embodiment of the present utility model;

[0034] Figure 6 It is a schematic structural diagram of the control system provided in the embodiment of the present utility model.

[0035] Reference numerals:

[0036] 1. Nitrogen filling main body; 11. Nitrogen filling nozzle; 12. Inlet pipe; 2. Timing system; 21. Timer; 22. Driving power supply; 23. Controller; 3. Insulating connecting sleeve; 31. Wire groove; 32. Locking member; 4. Conductive coil; 5. Copper pipe; 6. Solenoid valve; 7. Indicator light; 8. Pressure detection device. Specific embodiments

[0037] The preferred embodiments of the present utility model will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present utility model more thorough and complete, and to fully convey the scope of the present utility model to those skilled in the art.

[0038] Today, with the increasing popularity of automated equipment, enterprises widely use automated equipment to replace traditional manual operations to improve production efficiency and product quality. However, in the production process of refrigeration equipment such as evaporators and condensers, the nitrogen filling during welding still relies on manual operation. In the production of evaporators and condensers, during the welding process, in order to prevent the copper pipe from oxidizing at high temperature to generate oxide scale and then block the pipeline, it is necessary to use a nitrogen filling device to protect the evaporator and condenser with nitrogen. The existing traditional nitrogen filling tooling generally lacks a timing system, and the nitrogen filling time completely depends on the manual counting of employees. This method is not only inefficient but also prone to errors. If the nitrogen filling time is too short, the generation of oxide scale in the copper pipe cannot be effectively inhibited, so the protective effect of nitrogen filling cannot be fully exerted; on the contrary, if the nitrogen filling time is too long, the production cycle will be increased unnecessarily, affecting the overall production efficiency.

[0039] In addition, manual counting may also lead to a series of other problems, such as employee fatigue, inattention, etc., further increasing the uncertainty and risk during the nitrogen filling process.

[0040] Based on this, the present application provides an intelligent nitrogen filling device.

[0041] Embodiment 1

[0042] As Figures 1 - 5 shown, this embodiment provides an intelligent nitrogen filling device, including a nitrogen filling main body 1, N nitrogen filling nozzles 11 and an inlet pipe 12 are arranged on the nitrogen filling main body 1, the inlet pipe 12 is externally connected to a gas supply device, and a solenoid valve 6 is arranged at the air outlet of the gas supply device, where N is a natural number greater than 1;

[0043] It further includes a timing system 2, and the timing system 2 includes a timer 21 and a controller 23. The controller 23 is electrically connected to the timer 21 and the solenoid valve 6. When the nitrogen filling nozzle 11 is connected to the nitrogen filling port of the heat exchanger, the timer 21 starts timing, and the controller 23 controls the solenoid valve 6 to open. The controller 23 of the present application is a PLC controller 23. The PLC controller 23 has a wide range of applications in the field of industrial control and has many advantages such as high reliability, strong anti-interference ability, strong programmability, and good flexibility. When used in the nitrogen filling device of the present application, a specific control scheme can be freely customized according to user needs, and the use requirements of different occasions can be met.

[0044] During the working process of the intelligent nitrogen filling device, the timer 21 will only start when the nitrogen filling nozzle 11 is connected to the nitrogen filling port of the heat exchanger. If the nitrogen filling nozzle 11 is not connected to the nitrogen filling port of the heat exchanger, the timer 21 will not start. This design can associate the nitrogen filling process with timing to monitor the nitrogen filling time. The design of the timing system 2 and the controller 23 can automatically start timing and automatically close the solenoid valve 6 after reaching the preset time, thereby accurately controlling the nitrogen filling time. This avoids the inaccuracy and error of manual timing and improves the automation degree of the nitrogen filling process. Accurately controlling the nitrogen filling time can ensure that the nitrogen filling amount reaches the set requirements, neither excessive nor insufficient. Appropriate nitrogen filling can effectively prevent the generation of oxide scales during the high-temperature welding process of the heat exchanger and improve the manufacturing quality and performance of the heat exchanger. Moreover, due to the accurate control of the nitrogen filling time, the device helps to improve the overall manufacturing quality of the heat exchanger. A stable nitrogen filling process can reduce problems such as pipeline blockage caused by oxide scales and improve the reliability and service life of the product.

[0045] In actual applications, the device is flexibly designed and the timing system 2 can also be adjusted according to needs to adapt to heat exchangers of different models and specifications. By adjusting the setting of the timer 21, different nitrogen filling requirements can be easily adapted, and the applicable range is wide.

[0046] Embodiment 2

[0047] This embodiment provides a specific implementation manner of the timing system 2, which is as follows:

[0048] See Figures 1 - 5, in this embodiment, the timing system 2 further includes a driving power source 22, and the output end of the driving power source 22 is electrically connected to the timer 21; the timer 21 is provided with a first connector and a second connector, an insulating connection sleeve 3 is arranged on the first connector, the insulating connection sleeve 3 is sleeved on one of the nitrogen charging nozzles 11, and a conductive coil 4 is arranged outside the insulating connection sleeve 3; the second connector is electrically connected to one of the nitrogen charging nozzles 11, and the driving power source 22 is electrically connected to the second connector; the driving power source 22 of the present application can be a 24V power source.

[0049] When the nitrogen charging nozzle 11 sleeved with the insulating connection sleeve 3 is connected to the heat exchanger, the conductive coil 4 contacts the copper tube of the heat exchanger, so that a conductive path is formed between the first connector and the second connector of the timer 21.

[0050] More specifically, in this embodiment, the cross-section of the insulating connection sleeve 3 is circular or polygonal.

[0051] The driving power source 22 provides a working power source for the timer 21. By improving the circuit of the timer 21, such as connecting the first connector to the insulating connection sleeve 3 and electrically connecting the second connector to the nitrogen charging nozzle 11. During the use of the timing system 2, the conductive coil 4 contacts the copper tube of the heat exchanger, and a conductive path can be formed among the driving power source 22, the conductive coil 4, the timer 21 and the copper tube of the heat exchanger, so that the timer 21 is powered on to work, and thus nitrogen charging timing is carried out. This design enables the entire device to automatically start timing when the nitrogen charging nozzle 11 sleeved with the insulating connection sleeve 3 is connected to the heat exchanger, and automatically stop nitrogen charging when the preset time is reached. This way of precisely controlling the nitrogen charging time ensures the stability and accuracy of the nitrogen charging process, thereby improving the manufacturing quality of the heat exchanger. Triggering the start of the timer 21 by using the contact between the conductive coil 4 and the copper tube of the heat exchanger to form a conductive path not only realizes intelligent control, but also can achieve the purpose of obtaining great benefits with small modifications.

[0052] In this embodiment, the nitrogen filling nozzle 11 is connected to the copper tube by setting the insulating connection sleeve 3, making the circuit connection of the timer 21 more convenient. Due to the use of the insulating connection sleeve 3, the circuit loop between the driving power supply 22 and the timer 21 is in an open state during non-working hours (i.e., when the intelligent nitrogen filling device is not in contact with the condenser). At this time, the solenoid valve 6 does not act and the nitrogen is closed. During the working process, when the intelligent nitrogen filling device contacts the heat exchanger, since the copper tube 5 of the heat exchanger is conductive, the circuit loop between the driving power supply 22 and the timer 21 is connected. The PLC controller 23 controls the solenoid valve 6 to open the nitrogen, and the nitrogen filling operation starts. Under the action of the timer 21, after the nitrogen filling reaches 3 seconds, the solenoid valve 6 closes the nitrogen, and a nitrogen filling cycle ends. By connecting the wire coil to the PLC controller 23, automatic timing during nitrogen filling can be achieved basically without changing the structure of the nitrogen filling main body 1, achieving the purpose of obtaining great benefits with small modifications.

[0053] Embodiment 3

[0054] This embodiment is an improvement based on Embodiment 2.

[0055] See Figures 1 - 5 , in this embodiment, a locking member 32 is provided on the outer wall of the insulating connection sleeve 3, and a plurality of the locking members 32 are arranged along the axial direction of the insulating connection sleeve 3.

[0056] The plurality of locking members 32 are evenly distributed along the axial direction of the insulating connection sleeve 3. The number can be set to several according to actual needs, and at least two locking members 32 are provided. The design of the locking member 32 aims to enhance the connection stability between the insulating connection sleeve 3 and the nitrogen filling nozzle 11, ensuring that it will not loosen or fall off due to external forces and vibrations during the nitrogen filling process.

[0057] Specifically, the locking member 32 can be a threaded locking ring, a snap locking structure, or other components that can achieve a fastening function. These locking members 32 can firmly fix the insulating connection sleeve 3 on the nitrogen filling nozzle 11 to form a stable conductive path. At the same time, the design of the locking member 32 also takes into account the convenience of installation and disassembly, enabling the staff to easily fix the insulating connection sleeve 3 on the nitrogen filling nozzle 11 through the locking member 32, or disassemble it for cleaning, replacement and other operations.

[0058] During the operation of the nitrogen filling tooling, when the intelligent nitrogen filling tooling contacts the condenser, due to the conductivity of the copper tubes of the heat exchanger, the circuit loop is connected. At this time, the PLC controller 23 receives the signal and controls the solenoid valve 6 to open the nitrogen gas, and the nitrogen filling operation starts. The status indicator light 7 shows green to indicate that the nitrogen filling is in progress. Under the action of the timer 21, when the preset nitrogen filling time (such as 3 seconds) is reached, the solenoid valve 6 closes the nitrogen gas. At this time, the status indicator light 7 shows red, indicating that a nitrogen filling cycle has ended.

[0059] Through the improvement of this embodiment, not only the connection stability and reliability between the insulating connecting sleeve 3 and the nitrogen filling nozzle 11 are improved, but also the installation and disassembly processes are made more convenient, thereby improving the work efficiency and reducing the maintenance cost. This improvement is of great significance for promoting the replacement of manual operation by automation and enhancing the production efficiency.

[0060] Embodiment 4

[0061] This embodiment is an improvement based on Embodiment 3.

[0062] See Figures 1 - 5 , in this embodiment, a wire groove 31 is provided on the outer wall of the insulating connecting sleeve 3, and the conductive coil 4 is sleeved in the wire groove 31; and after the conductive coil 4 is sleeved in the wire groove 31, the conductive coil 4 protrudes from the outer wall of the insulating connecting sleeve 3.

[0063] The shape of the wire groove 31 needs to be designed according to the shape of the conductive coil 4. It should be noted that the depth of the wire groove 31 is less than the diameter of the wire of the conductive coil 4, which ensures that after the conductive coil 4 is installed in the wire groove 31, the wire can protrude from the wire groove 31, so as to ensure that the conductive coil 4 can be in contact with the copper tube of the heat exchanger during use, and conduct the circuit between the drive power supply 22 and the timer 21.

[0064] The design of the wire groove 31 enables the conductive coil 4 to be firmly sleeved on the outer wall of the insulating connecting sleeve 3, thereby enhancing the connection stability and reliability between the conductive coil 4, the nitrogen filling nozzle 11 and the copper tube 5 of the heat exchanger. During the nitrogen filling process, this stable connection can ensure the unobstructed conductive path and guarantee the precise control of the nitrogen filling time. The wire groove 31 not only improves the connection stability, but also further enhances the safety of the entire device. By standardizing the orientation and position of the conductive coil 4, the wire groove 31 can prevent the conductive coil 4 from accidentally falling off or short-circuiting due to external forces during the nitrogen filling process, thus avoiding potential safety hazards such as electric shock and fire. And the wire groove 31 can protect the conductive coil 4 from being eroded and worn by the external environment, so the durability and service life of the entire device can be improved.

[0065] Embodiment 5

[0066] This embodiment is an improvement based on Embodiment 2.

[0067] See Figures 1 - 5 , in this embodiment, it further includes an indicator light 7, and the indicator light 7 is electrically connected to the controller 23.

[0068] The indicator light 7 is electrically connected to the controller 23 (PLC). This design enables the indicator light 7 to reflect the working state of the nitrogen filling tooling in real time, providing intuitive and clear indication for the staff.

[0069] Specifically, when the nitrogen filling tooling starts to work, that is, when the intelligent nitrogen filling tooling contacts the condenser and the circuit is connected, the PLC controller 23 receives the signal and controls the solenoid valve 6 to open the nitrogen supply. At this time, the indicator light 7 lights up (for example, green), indicating that the nitrogen filling operation is in progress. The staff can quickly judge whether the nitrogen filling work has been started by observing the lighting state of the indicator light 7.

[0070] As the nitrogen filling process proceeds, the timer 21 starts timing. When the preset nitrogen filling time (such as 3 seconds) is reached, the PLC controller 23 controls the solenoid valve 6 to close the nitrogen supply, marking the end of the nitrogen filling operation. At this time, the indicator light 7 will go out or change color (for example, turn red) to visually inform the staff that the nitrogen filling has been completed.

[0071] The addition of the indicator light 7 greatly improves the visualization degree of the nitrogen filling work, enabling the staff to easily master the nitrogen filling progress, avoiding time waste and cumbersome operations caused by frequently checking the timer 21 or the controller 23. At the same time, this intuitive indication method also helps to reduce human errors and improve the accuracy and reliability of the nitrogen filling work.

[0072] Embodiment 6

[0073] This embodiment is an improvement based on any one of Embodiments 1 - 5.

[0074] See Figures 1 - 5 , in this embodiment, it further includes a communication module, the communication module is arranged on the controller 23, and the communication module is used for electrically connecting to the cloud network.

[0075] In this embodiment, the intelligent nitrogen filling tooling is additionally provided with a communication module, which can be arranged on the controller 23 (PLC) and is electrically connected to the cloud network. The communication module endows the intelligent nitrogen filling device with new remote monitoring and management capabilities, enabling the staff to master the operating state of the nitrogen filling device in real time through the cloud platform across geographical restrictions.

[0076] When the intelligent nitrogen filling tooling starts the nitrogen filling operation, the controller 23 will capture and record key data such as the nitrogen filling progress and working status in real time. Subsequently, this data will be quickly uploaded to the cloud platform through the communication module, forming a detailed and dynamic working database.

[0077] Staff can log in to the cloud platform to easily access key information such as the historical working data, current working status, and nitrogen filling progress of the nitrogen filling device. This remote monitoring method not only greatly improves work efficiency but also significantly reduces the time and labor costs brought by on-site inspections.

[0078] Moreover, by deeply mining and analyzing the data collected on the cloud platform, staff can also discover potential rules and problems in the nitrogen filling process. This can provide strong data support for subsequent optimization of the nitrogen filling process and improvement of product quality, thus promoting the continuous progress and improvement of intelligent nitrogen filling technology. Specifically, the copper whisker module of this application can be a Bluetooth module or a Wi-Fi module.

[0079] Embodiment 7

[0080] This embodiment is an improvement based on any one of Embodiments 1-5.

[0081] See Figures 1 - 5 , in this embodiment, a pressure detection device 8 is provided on each of the nitrogen filling nozzles 11.

[0082] In this embodiment, a pressure detection device 8 is provided on each nitrogen filling nozzle 11 of the intelligent nitrogen filling tooling. This design enables staff to monitor the pressure changes during the nitrogen filling process in real time, thereby ensuring the accuracy and stability of nitrogen filling, and further improving the nitrogen filling effect and product quality. The pressure detection device 8 can be a pressure gauge.

[0083] When the nitrogen filling tooling starts working, nitrogen is injected into the copper tube 5 of the evaporator or condenser through the nitrogen filling nozzle 11. At this time, the pressure detection device 8 will monitor and record the pressure data on the nitrogen filling nozzle 11 in real time. These data are crucial for precisely controlling the nitrogen filling process. By monitoring the pressure of the nitrogen filling nozzle 11 in real time, staff can more accurately grasp the progress and effect of nitrogen filling. Once the nitrogen filling pressure is abnormal, such as too high or too low, staff can quickly take measures to adjust it, thereby ensuring the precise matching of nitrogen filling pressure and time. This precise control helps to improve the accuracy and controllability of nitrogen filling, and significantly reduces production problems caused by improper pressure. Once the nitrogen filling pressure is too high or too low, staff can quickly take measures to handle it to avoid the expansion of faults or more serious production problems.

[0084] Embodiment 8

[0085] This embodiment provides a control system, which is applied to the intelligent nitrogen filling device described above.

[0086] See Figures 1 - 6 , this control system is used to automatically control the above-mentioned intelligent nitrogen filling device, which can significantly improve the automation level, stability and reliability of the nitrogen filling process, optimize the nitrogen filling process and improve the product quality.

[0087] Specifically, this control system may include a PLC controller 23, a solenoid valve 6, a pressure detection device 8, an indicator light 7, and a timer 21.

[0088] The PLC controller 23, as the core component of the control system, is responsible for receiving input signals such as sensors and switches, processing these signals according to preset programs and logics, and then outputting control signals to drive the solenoid valve 6, the indicator light 7, etc. to act.

[0089] The communication module is responsible for realizing data exchange between the control system and the cloud network. It can upload the real-time data collected by the control system to the cloud platform, and at the same time receive instructions or information from the cloud platform to achieve remote monitoring and management.

[0090] The pressure detection device 8 is used to monitor the pressure change in the nitrogen filling process in real time. It converts the pressure signal into an electrical signal and then transmits it to the PLC controller 23 for processing.

[0091] Actuators such as the solenoid valve 6 and the indicator light 7 act according to the output signal of the PLC controller 23 to realize the control of the nitrogen filling process.

[0092] For the sake of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "above" etc. can be used here to describe the spatial position relationship between a device or feature shown in the figure and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation other than the orientation described in the figure for the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will be positioned as "below other devices or structures" or "under other devices or structures" afterwards. Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding explanations are made for the spatial relative descriptions used here.

[0093] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Without additional declaration, the above terms have no special meaning, and thus should not be construed as a limitation on the protection scope of this application.

[0094] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, various modifications and variations can be made to the present utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An intelligent nitrogen filling device, comprising a nitrogen filling main body (1), on which N nitrogen filling nozzles (11) and an air inlet pipe (12) are arranged. The air inlet pipe (12) is externally connected to a gas supply device, and a solenoid valve (6) is arranged at the air outlet of the gas supply device. N is a natural number greater than 1, and it is characterized in that: It further includes a timing system (2), which includes a timer (21) and a controller (23). The controller (23) is electrically connected to the timer (21) and the solenoid valve (6); when the nitrogen filling nozzle (11) is connected to the nitrogen filling port of the heat exchanger, the timer (21) starts timing, and the controller (23) controls the solenoid valve (6) to open.

2. The intelligent nitrogen filling device according to claim 1, characterized in that: The timing system (2) further includes a driving power supply (22), and the output end of the driving power supply (22) is electrically connected to the timer (21); the timer (21) is provided with a first connector and a second connector. An insulating connection sleeve (3) is arranged on the first connector, and the insulating connection sleeve (3) is sleeved on one of the nitrogen filling nozzles (11). A conductive coil (4) is arranged outside the insulating connection sleeve (3); the second connector is electrically connected to one of the nitrogen filling nozzles (11), and the driving power supply (22) is electrically connected to the second connector; When the nitrogen filling nozzle (11) sleeved with the insulating connection sleeve (3) is connected to the heat exchanger, the conductive coil (4) contacts the copper pipe (5) of the heat exchanger, so that a conductive path is formed between the first connector and the second connector of the timer (21).

3. The intelligent nitrogen filling device according to claim 2, characterized in that: The cross section of the insulating connection sleeve (3) is circular or polygonal.

4. The intelligent nitrogen filling device according to claim 2, characterized in that: The outer wall of the insulating connection sleeve (3) is provided with locking members (32), and several locking members (32) are arranged along the axial direction of the insulating connection sleeve (3).

5. The intelligent nitrogen filling device according to any one of claims 2-4, characterized in that: The outer wall of the insulating connection sleeve (3) is provided with a wire groove (31), and the conductive coil (4) is sleeved in the wire groove (31); and after the conductive coil (4) is sleeved in the wire groove (31), the conductive coil (4) protrudes from the outer wall of the insulating connection sleeve (3).

6. The intelligent nitrogen filling device according to any one of claims 1-4, characterized in that: It further includes an indicator light (7), and the indicator light (7) is electrically connected to the controller (23).

7. The intelligent nitrogen filling device according to any one of claims 1-4, characterized in that: It further includes a communication module, which is arranged on the controller (23), and the communication module is used for electrically connecting to the cloud network.

8. The intelligent nitrogen filling device according to any one of claims 1-4, characterized in that: A pressure detection device (8) is arranged on each nitrogen filling nozzle (11).

9. A control system, characterized in that: The control system is applied to the intelligent nitrogen filling device according to any one of claims 1-8.

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