Automatic fluorine filling device control system
The automatic refrigerant charging device control system, which uses PLC programmable controllers and solenoid valves, solves the problem of reliance on manual operation of the refrigeration system, realizes the automation of the refrigeration system and the precise vacuuming and refrigerant charging process, and improves the intuitiveness and accuracy of operation.
Patent Information
- Application Number
- CN202422840568.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-21
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-11-21
AI Technical Summary
Existing methods for charging refrigerant into refrigeration systems require manual operation or reliance on experience, and the timing of evacuation and refrigerant charging is not intuitive or accurate enough.
The automatic refrigerant charging device control system, which consists of PLC programmable controllers and solenoid valves, achieves automated control through pressure transmitters and weighing sensors. Combined with the human-machine interface, the refrigerant weight and pressure are set to realize the automatic vacuuming and refrigerant charging of the refrigeration system.
It enables the automation of the refrigeration system, precise vacuuming and refrigerant charging processes, reduces manual intervention, and improves the intuitiveness and accuracy of operation.
Smart Images
Figure CN223448709U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to fluorine filling device technical field relates to an automatic fluorine filling device control system. BACKGROUND
[0002] The existing fluorine filling mode for refrigeration system is divided into two kinds, one is by vacuum pump and fluorine adding machine cooperation, also has automatic evacuation and fluorine adding equipment. By vacuum pump and fluorine adding machine cooperation fluorine adding, need manual operation, need someone to stand by when operating. The other automatic evacuation fluorine adding machine is single system operation, can evacuate and fluorine adding in time and quantity, but evacuation time and fluorine adding time need experience to explore, not enough intuitive and accurate. INVENTION CONTENTS
[0003] To solve the above technical problems, the utility model aims at providing an automatic fluorine filling device control system.
[0004] The utility model provides an automatic fluorine filling device control system, it includes: PLC programmable controller, refrigerant tank and with PLC programmable controller connection's first electromagnetic valve, second electromagnetic valve, third electromagnetic valve, fourth electromagnetic valve, fifth electromagnetic valve, sixth electromagnetic valve, seventh electromagnetic valve, first pressure transmitter, second pressure transmitter, weighing sensor, vacuum pump;
[0005] First electromagnetic valve one end is connected first refrigeration system through first refrigerant pipeline, the other end is connected vacuum pump through third electromagnetic valve, and first pressure transmitter is installed on the pipeline between first electromagnetic valve and third electromagnetic valve;
[0006] Second electromagnetic valve one end is connected second refrigeration system through second refrigerant pipeline, the other end is connected fourth electromagnetic valve, seventh electromagnetic valve and refrigerant tank in proper order;Second pressure transmitter is installed on the pipeline between second electromagnetic valve and fourth electromagnetic valve;Weighing sensor is installed on the lifting ring of refrigerant tank;
[0007] Fifth electromagnetic valve one end is connected to the pipeline between first electromagnetic valve and third electromagnetic valve, and the other end is connected to the pipeline between fourth electromagnetic valve and seventh electromagnetic valve;Sixth electromagnetic valve one end is connected to the pipeline between third electromagnetic valve and vacuum pump, and the other end is connected to the pipeline between second electromagnetic valve and fourth electromagnetic valve.
[0008] Further, the first electromagnetic valve and the second electromagnetic valve are opened, when the first pressure transmitter detects that the pressure on the first refrigerant pipeline is greater than -0.1MPa, the PLC programmable controller controls the third electromagnetic valve and the vacuum pump to be opened, and the first refrigeration system is vacuumized, when the first pressure transmitter detects that the pressure on the first refrigerant pipeline is less than -0.1MPa, the third electromagnetic valve and the vacuum pump are closed, the fifth electromagnetic valve and the seventh electromagnetic valve are opened, and the refrigerant tank starts to supplement fluorine for the first refrigeration system; at this time, if the second pressure transmitter detects that the pressure on the second refrigerant pipeline is greater than -0.1MPa, the sixth electromagnetic valve and the vacuum pump are opened, and the second refrigeration system is vacuumized, when the second pressure transmitter detects that the pressure on the second refrigerant pipeline is less than -0.1MPa, the sixth electromagnetic valve and the vacuum pump are closed; when the weighing sensor detects that the weight of the refrigerant tank reaches the first set value, the first refrigeration system is filled, the fifth electromagnetic valve is closed; the fourth electromagnetic valve is opened, and the second refrigeration system starts to supplement fluorine, when the weighing sensor detects that the weight of the refrigerant tank reaches the second set value, the first refrigeration system is filled, and all valves are closed.
[0009] Further, the automatic fluorine filling device control system is further provided with a man-machine interface, the man-machine interface communicates with the PLC programmable controller through Ethernet, and the required refrigerant weight is set through the man-machine interface.
[0010] The automatic fluorine filling device control system of the utility model, through the man-machine interface setting pipeline evacuation required pressure, namely vacuum pump starting pressure, and required refrigerant weight, can control each electromagnetic valve, vacuum pump through the PLC programmable controller, and carry out vacuumizing and fluorine filling operation to two refrigeration systems alternately. When the first refrigeration system is vacuumized to reach the specified pressure, each electromagnetic valve is switched, and is switched to the fluorine filling state, and starts to fill fluorine for the first refrigeration system, at this time, the second refrigeration system can start to carry out vacuumizing operation, when the second refrigeration system is vacuumized, if the first refrigeration system is filled, stop adding refrigerant for the first system, each valve is automatically switched, and starts to carry out fluorine filling operation to the second refrigeration system. That is, vacuumizing and adding refrigerant operation can be carried out to two refrigeration systems respectively. BRIEF DESCRIPTION OF DRAWINGS
[0011] Figure 1 It is a structure schematic view of the automatic fluorine filling device control system of the utility model;
[0012] Figure 2 It is a principle view of the automatic fluorine filling device control system of the utility model. DETAILED DESCRIPTION
[0013] As Figure 1The utility model discloses an automatic fluorine filling device control system, including: PLC programmable controller 10, refrigerant tank 12 and with PLC programmable controller 10 is connected first solenoid valve 1, second solenoid valve 2, third solenoid valve 3, fourth solenoid valve 4, fifth solenoid valve 5, sixth solenoid valve 6, seventh solenoid valve 7, first pressure transmitter 8, second pressure transmitter 9, vacuum pump 13, weighing sensor 11.
[0014] First solenoid valve 1 one end is connected first refrigerating system through first refrigerant pipeline, the other end is connected vacuum pump 13 through third solenoid valve 3, and first pressure transmitter 8 is installed on the pipeline between first solenoid valve 1 and third solenoid valve 3.
[0015] Second solenoid valve 2 one end is connected second refrigerating system through second refrigerant pipeline, the other end is connected fourth solenoid valve 4, seventh solenoid valve 7 and refrigerant tank 12 in proper order, and second pressure transmitter 9 is installed on the pipeline between second solenoid valve 2 and fourth solenoid valve 4, and weighing sensor 11 is installed on the lifting ring of refrigerant tank 12.
[0016] Fifth solenoid valve 5 one end is connected to the pipeline between first solenoid valve 1 and third solenoid valve 3, and the other end is connected to the pipeline between fourth solenoid valve 4 and seventh solenoid valve 7, and sixth solenoid valve 6 one end is connected to the pipeline between third solenoid valve 3 and vacuum pump 13, and the other end is connected to the pipeline between second solenoid valve 2 and fourth solenoid valve 4, and both ends of fifth solenoid valve 5 and sixth solenoid valve 6 are connected with corresponding pipeline through copper pipe.
[0017] The automatic fluorine filling device control system is further provided with human-computer interface 14, and the human-computer interface 14 communicates with PLC programmable controller 10 through Ethernet, and sets the required refrigerant weight through human-computer interface 14.
[0018] As Figure 2As shown, the circuit breaker QF1 is connected to the power supply at one end and to the second end 1 of the fuse FU1 and the second end of the fuse FU2 at the other end, the first end of the fuse FU1 is connected to the input end of the switching power supply UR, and the output end of the switching power supply UR is connected to the power input end of the human-computer interface 14 and the four-channel digital weighing module WC. The positive electrode of the first pressure transmitter 8 and the second pressure transmitter 9 is connected to the positive electrode of the output end of the switching power supply UR, the negative electrode of the first pressure transmitter 8 is connected to the analog input end A of the PLC programmable controller 10, and the negative electrode of the second pressure transmitter 9 is connected to the analog input end B of the PLC programmable controller. The analog input end of the four-channel digital weighing module WC is connected to the weighing sensor 11, and the communication ports A and B are connected to the communication port PORT1 of the programmable controller CPU124E. The PLC programmable controller 10 communicates with the human-computer interface 14 through the Ethernet port. The normally open points of the small relays KA1-KA7 are connected in series and then connected in parallel. The two ends of the parallel circuit are connected to the first end of the FU2 and the zero line N respectively. The small relay KA8 is connected in series with the vacuum pump 13, and the two ends are connected to the first end of the FU2 and the zero line N respectively. The digital output end Q0.0-Q0.7 of the PLC programmable controller 10 is connected to one end of the coil of the small relays KA1-KA8, and the other end of the coil of the small relays KA1-KA8 is connected to the zero line N. The power input L1 end and N end of the PLC programmable controller 10 are connected to the first end of the FU2 and the zero line N respectively.
[0019] The specific operation process of the automatic fluorine charging device control system of the utility model is as follows:
[0020] When the first pressure transmitter 8 detects that the pressure on the first refrigerant pipeline is greater than -0.1MPa, the PLC programmable controller 10 controls the opening of the third electromagnetic valve 3 and the vacuum pump 13 to vacuumize the first refrigeration system, and when the first pressure transmitter 8 detects that the pressure on the first refrigerant pipeline is less than -0.1MPa, the third electromagnetic valve 3 and the vacuum pump 13 are closed, the fifth electromagnetic valve 5 and the seventh electromagnetic valve 7 are opened, and the refrigerant tank 12 starts to supplement fluorine for the first refrigeration system; at this time, if the second pressure transmitter 9 detects that the pressure on the second refrigerant pipeline is greater than -0.1MPa, the sixth electromagnetic valve 6 and the vacuum pump 13 are opened to vacuumize the second refrigeration system, and when the second pressure transmitter 9 detects that the pressure on the second refrigerant pipeline is less than -0.1MPa, the sixth electromagnetic valve 6 and the vacuum pump 13 are closed; when the weighing sensor 11 detects that the weight of the refrigerant tank 12 reaches the first set value, the first refrigeration system is filled, and the fifth electromagnetic valve 5 is closed; the fourth electromagnetic valve 4 is opened, and the fluorine supplement for the second refrigeration system is started, and when the weighing sensor 11 detects that the weight of the refrigerant tank reaches the second set value, the first refrigeration system is filled, and all valves are closed.
[0021] The above merely describes preferred embodiments of the present application and is not intended to limit the spirit of the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A control system for an automatic fluorine filling device, characterized in that: include: A PLC programmable controller, a refrigerant tank, and a first solenoid valve, a second solenoid valve, a third solenoid valve, a fourth solenoid valve, a fifth solenoid valve, a sixth solenoid valve, a seventh solenoid valve, a first pressure transmitter, a second pressure transmitter, a weighing sensor, and a vacuum pump connected to the PLC programmable controller; One end of the first solenoid valve is connected to the first refrigeration system through the first refrigerant pipeline, and the other end is connected to the vacuum pump through the third solenoid valve, and the first pressure transmitter is installed on the pipeline between the first solenoid valve and the third solenoid valve; One end of the second solenoid valve is connected to the second refrigeration system via a second refrigerant pipe, and the other end is connected in sequence to the fourth solenoid valve, the seventh solenoid valve, and the refrigerant tank; the second pressure transmitter is installed on the pipe between the second solenoid valve and the fourth solenoid valve; the weighing sensor is installed on the lifting ring of the refrigerant tank; One end of the fifth solenoid valve is connected to the pipe between the first solenoid valve and the third solenoid valve, and the other end is connected to the pipe between the fourth solenoid valve and the seventh solenoid valve; one end of the sixth solenoid valve is connected to the pipe between the third solenoid valve and the vacuum pump, and the other end is connected to the pipe between the second solenoid valve and the fourth solenoid valve.
2. The automatic fluorine filling device control system according to claim 1, characterized in that: Open the first solenoid valve and the second solenoid valve. When the first pressure transmitter detects that the pressure on the first refrigerant pipeline is greater than -0.1MPa, the PLC programmable controller controls the opening of the third solenoid valve and the vacuum pump to evacuate the first refrigeration system. When the first pressure transmitter detects that the pressure on the first refrigerant pipeline is less than -0.1MPa, the third solenoid valve and the vacuum pump are closed, and the fifth solenoid valve and the seventh solenoid valve are opened. The refrigerant tank starts to replenish fluorine for the first refrigeration system. At this time, if the second pressure transmitter detects that the pressure on the second refrigerant pipeline is greater than -0.1MPa, the sixth solenoid valve and the vacuum pump are opened to evacuate the second refrigeration system. When the second pressure transmitter detects that the pressure on the second refrigerant pipeline is less than -0.1MPa, the sixth solenoid valve and the vacuum pump are closed. When the weighing sensor detects that the weight of the refrigerant tank reaches the first set value, the first refrigeration system is fully charged and the fifth solenoid valve is closed. Open the fourth solenoid valve and start replenishing fluorine for the second refrigeration system. When the weighing sensor detects that the weight of the refrigerant tank reaches the second set value, the first refrigeration system is fully charged and all valves are closed.
3. The automatic fluorine filling device control system according to claim 1, characterized in that: The automatic fluorine filling device control system is also provided with a human-machine interface, which communicates with the PLC programmable controller via Ethernet, and the required refrigerant weight is set via the human-machine interface.