Energy-saving control system for condensation fan of refrigeration equipment

Abstract

The invention discloses an energy-saving control system for a condensation fan of refrigeration equipment, and relates to the technical field of refrigeration equipment control, and the technical scheme is that the energy-saving control system comprises an intelligent monitoring module used for monitoring working parameters of the condensation fan; the control end is used for sending out a control instruction of the fan according to the parameters monitored by the intelligent monitoring module, the control end comprises a manual control module and an automatic control module, the manual control module is used for manually controlling the fan to work, the automatic control module is used for releasing manpower to automatically control the fan to work, and the control end is connected to the output end of the intelligent monitoring module; the automatic control system has the beneficial effects that when a control algorithm of the automatic control module fails, automatic control can be switched to manual control by using the mode switching module, and then a worker can control the work of the condensation fan by adopting the manual control module, so that manual intervention can be directly performed in an emergency; therefore, the control system can be prevented from lacking safety redundancy and emergency operation capability.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigeration equipment control, and particularly relates to an energy-saving control system for a condensing fan of a refrigeration equipment. Background Art

[0002] A refrigeration equipment refers to an equipment mainly used for refrigerating crew food, refrigerating various goods, and air-conditioning cabins in hot days. A condensing fan belongs to a kind of refrigeration equipment, and a control system is also needed to control the condensing fan when it is working; It is found that the existing control system lacks safety redundancy and emergency operation capabilities when in use. When the control algorithm of the system fails, that is, manual intervention cannot be carried out in case of emergency, resulting in the condensing fan unable to work properly. Therefore, improvement is needed; Therefore, it is very necessary to invent an energy-saving control system for a condensing fan of a refrigeration equipment. Summary of the Invention

[0003] Therefore, the present invention provides an energy-saving control system for a condensing fan of a refrigeration equipment to solve the problems in the background art.

[0004] To achieve the above object, the present invention provides the following technical solution: An energy-saving control system for a condensing fan of a refrigeration equipment, comprising: An intelligent monitoring module, which is used to monitor the parameters of the condensing fan during operation; A control terminal, which is used to issue a control instruction for the fan according to the parameters monitored by the intelligent monitoring module. The control terminal includes a manual control module and an automatic control module. The manual control module is used to manually control the operation of the fan by humans, and the automatic control module is used to release human effort and automatically control the operation of the fan. The control terminal is connected to the output end of the intelligent monitoring module; A mode switching module, which is used to switch the control method for the fan. The mode switching module is connected to the input end of the control terminal; An execution terminal, which is used to directly drive the condensing fan to operate according to the control instruction. The execution terminal is connected to the output end of the control terminal.

[0005] Preferably, the intelligent monitoring module includes a condensation temperature monitoring module, an ambient temperature monitoring module, an internal pressure monitoring module, a current real-time monitoring module, and a voltage real-time monitoring module. The condensation temperature monitoring module is used to monitor the temperature at the outlet of the condensation fan in real time. The ambient temperature monitoring module is used to monitor the ambient temperature where the equipment is located. The internal pressure monitoring module is used to monitor the internal pressure of the condensation fan to prevent abnormal pressure. The current real-time monitoring module is used to monitor the current of the condensation fan during operation. The voltage real-time monitoring module is used to monitor the voltage of the condensation fan during operation. An abnormality judgment module is provided at the output ends of the internal pressure monitoring module, the current real-time monitoring module, and the voltage real-time monitoring module. The abnormality judgment module is used to judge whether there is an abnormality in the condensation fan according to the monitored pressure, current, and voltage.

[0006] Preferably, the execution end includes an intelligent frequency conversion module, a start-stop control module, and an emergency stop control module. The intelligent frequency conversion module is used to adjust the operating frequency of the condensation fan according to the temperature difference to achieve stepless speed regulation. The start-stop control module is used to control the intermittent start and stop of the condensation fan in a low-temperature environment. The emergency stop control module is used to control the condensation fan to stop working immediately when the pressure, current, and voltage of the condensation fan are abnormal. An alarm module is provided at the output end of the emergency stop control module. The alarm module is used to alarm the staff when the condensation fan stops working abnormally.

[0007] Preferably, the control end is electrically connected to the intelligent monitoring module, the mode switching module is electrically connected to the control end, and the execution end is electrically connected to the control end.

[0008] Preferably, the abnormality judgment module is electrically connected to the internal pressure monitoring module, the current real-time monitoring module, and the voltage real-time monitoring module.

[0009] Preferably, the alarm module is electrically connected to the emergency stop control module.

[0010] Preferably, the manual control module includes a housing. A cover plate is provided on the front side of the housing, and the cover plate is connected to the housing by a hinge. A shell is provided inside the housing. A control panel is provided on the front side of the shell. At the four corners of the rear side of the control panel, connection blocks are fixedly connected. The four connection blocks all penetrate through the slot holes on the shell and extend into the interior of the shell. Card slots are formed on the four connection blocks. Two first rotating shafts are embedded on the shell. Two rotating plates are fixedly connected to the front sides of the two first rotating shafts. Card blocks are fixedly connected to the tops of the four rotating plates. The four card blocks are respectively slidably embedded in the four card slots. Circular plates are fixedly sleeved on the outer parts of the two first rotating shafts. Two torsion springs are sleeved on the outer parts of the two first rotating shafts. The inner ends of the four torsion springs are respectively fixedly connected to the outer sides of the four circular plates. The outer ends of the four torsion springs are fixedly connected to the inner wall of the shell. An adapter block is fixedly embedded on the shell. A moving frame is slidably embedded on the adapter block. Slide grooves are formed on the two first rotating shafts. Two convex blocks are fixedly connected to the moving frame. The two convex blocks are respectively slidably embedded in the two slide grooves.

[0011] Preferably, two connecting rods are fixedly connected inside the housing. Two moving blocks are slidably sleeved on the outer parts of the two connecting rods. Springs are sleeved on the outer parts of the two connecting rods. The outer ends of the two springs are respectively fixedly connected to the four moving blocks. Columns are fixedly connected to the top and bottom of the shell. Fixed blocks are sleeved on the outer parts of the two columns, and the fixed blocks are connected to the columns through damping bearings. Two support rods are provided at the rear sides of the two fixed blocks and are connected to the fixed blocks through movable hinge seats. The four support rods are respectively connected to the four moving blocks through movable hinge seats. Stop blocks are fixedly connected to the inner walls of the top and bottom of the housing. The two stop blocks are respectively in contact with the rear sides of the two fixed blocks.

[0012] Preferably, an outer frame is sleeved on the front side of the shell. The outer frame is sleeved outside the control panel. Two reciprocating lead screws are embedded on the outer frame. Slide seats are sleeved on the outer parts of the two reciprocating lead screws. The slide seats are connected to the reciprocating lead screws through ball screw pairs. A cleaning pad is fixedly connected to the front sides of the two slide seats. The rear side of the cleaning pad is on the same horizontal plane as the front side of the control panel. Gears are fixedly sleeved on the outer parts of the tops of the two reciprocating lead screws. Two substrates are fixedly connected to the rear side of the cover plate. Tooth plates are fixedly connected to the inner sides of the two substrates.

[0013] Preferably, two mounting blocks are fixedly connected to both sides of the housing. A first magnetic block is fixedly connected to the front side of the cover plate. A second magnetic block is fixedly connected to the top of the housing.

[0014] The beneficial effects of the present invention are: 1. The present invention designs a control terminal composed of a manual control module and an automatic control module, and also designs a mode switching module. When the control algorithm of the automatic control module fails, the mode switching module can be used to switch the automatic control to manual control, and then the staff can use the manual control module to control the operation of the condensing fan. In this way, manual intervention can be directly carried out in case of emergency, and thus the lack of safety redundancy and emergency operation ability of this control system can be avoided. 2. The present invention designs an intelligent frequency conversion module, which can adjust the operating frequency of the condensing fan according to the temperature difference during use to achieve stepless speed regulation, and then dynamically adjust the refrigeration effect of the condensing fan. In addition, a start-stop control module is designed, so that the condensing fan can be controlled to operate intermittently in a low-temperature environment to avoid the condensing fan running at high load for a long time and increase the service life of the condensing fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings described below are only exemplary, and for those of ordinary skill in the art, other implementation drawings can be obtained by extension based on the provided drawings without creative efforts.

[0016] The structures, proportions, sizes, etc. shown in this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the limiting conditions under which the present invention can be implemented. Therefore, they do not have technical substance. Any modification of the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present invention.

[0017] Figure 1 Schematic diagram of the overall system provided by the present invention; Figure 2 Schematic diagram of the intelligent monitoring module provided by the present invention; Figure 3 Schematic diagram of the overall structure of the manual control module provided by the present invention; Figure 4 Provided by the present invention Figure 3 Schematic diagram of the middle cover plate being opened; Figure 5 Provided by the present invention Figure 4 Bottom view three-dimensional view; Figure 6 Provided by the present invention Figure 3 Exploded three-dimensional view; Figure 7 Provided by the present invention Figure 6 Enlarged view of part A in Figure 8 Stereoscopic explosion diagrams of components such as the outer frame, housing, connecting rod, and reciprocating lead screw provided by the present invention; Figure 9 Side view cross-sectional view of components such as the housing and control panel provided by the present invention; Figure 10 Explosion three-dimensional diagram of the housing and the components inside the housing provided by the present invention; Figure 11 Provided by the present invention Figure 10 Rear view explosion three-dimensional diagram of components such as the first intermediate rotating shaft and the connecting block; In the figure: 1, intelligent monitoring module; 2, control end; 3, manual control module; 4, automatic control module; 5, mode switching module; 6, execution end; 7, condensation temperature monitoring module; 8, ambient temperature monitoring module; 9, internal pressure monitoring module; 10, current real-time monitoring module; 11, voltage real-time monitoring module; 12, abnormality judgment module; 13, intelligent frequency conversion module; 14, start-stop control module; 15, emergency stop control module; 16, alarm module; 17, outer shell; 18, cover plate; 19, housing; 20, control panel; 21, connecting block; 22, first rotating shaft; 23, rotating plate; 24, clamping block; 25, circular plate; 26, torsion spring; 27, connecting block; 28, moving frame; 29, sliding groove; 30, convex block; 31, connecting rod; 32, moving block; 33, spring; 34, column; 35, fixed block; 36, support rod; 37, stop block; 38, outer frame; 39, reciprocating lead screw; 40, sliding seat; 41, cleaning pad; 42, gear; 43, substrate; 44, toothed plate; 45, mounting block; 46, first magnetic block; 47, second magnetic block. Specific embodiments

[0018] The following describes the preferred embodiments of the present invention with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0019] Referring to the attached Figure 1 - attached Figure 11 , a condensation fan energy-saving control system for a refrigeration device provided by the present invention includes: An intelligent monitoring module 1, which is used to monitor the parameters of the condensation fan during operation; A control end 2, which is used to issue a control instruction for the fan according to the parameters monitored by the intelligent monitoring module 1. The control end 2 includes a manual control module 3 and an automatic control module 4. The manual control module 3 is used for manual control of the fan operation by humans, and the automatic control module 4 is used to release human effort to automatically control the fan operation. The control end 2 is connected to the output end of the intelligent monitoring module 1; A mode switching module 5, which is used to switch the control method of the fan. The mode switching module 5 is connected to the input end of the control end 2; The execution end 6 is used to directly drive the condensation fan to operate according to the control instruction, and the execution end 6 is connected to the output end of the control end 2; The intelligent monitoring module 1 includes a condensation temperature monitoring module 7, an ambient temperature monitoring module 8, an internal pressure monitoring module 9, a current real-time monitoring module 10, and a voltage real-time monitoring module 11. The condensation temperature monitoring module 7 is used to monitor the temperature at the outlet of the condensation fan in real time. The ambient temperature monitoring module 8 is used to monitor the ambient temperature where the device is located. The internal pressure monitoring module 9 is used to monitor the internal pressure of the condensation fan to prevent abnormal pressure. The current real-time monitoring module 10 is used to monitor the current of the condensation fan during operation. The voltage real-time monitoring module 11 is used to monitor the voltage of the condensation fan during operation. An abnormality judgment module 12 is provided at the output ends of the internal pressure monitoring module 9, the current real-time monitoring module 10, and the voltage real-time monitoring module 11. The abnormality judgment module 12 is used to judge whether there is an abnormality in the condensation fan according to the monitored pressure, current, and voltage; The execution end 6 includes an intelligent frequency conversion module 13, a start-stop control module 14, and an emergency stop control module 15. The intelligent frequency conversion module 13 is used to adjust the operating frequency of the condensation fan according to the temperature difference to achieve stepless speed regulation. The start-stop control module 14 is used to control the intermittent start and stop of the condensation fan in a low-temperature environment. The emergency stop control module 15 is used to control the condensation fan to stop working immediately when the pressure, current, and voltage of the condensation fan are abnormal. An alarm module 16 is provided at the output end of the emergency stop control module 15. The alarm module 16 is used to alarm the staff when the condensation fan stops working abnormally; In this implementation scheme, a control end 2 composed of a manual control module 3 and an automatic control module 4 is designed, and a mode switching module 5 is also designed. In this way, when the control algorithm of the automatic control module 4 fails, the mode switching module 5 can be used to switch the automatic control to manual control, and then the staff can use the manual control module 3 to control the operation of the condensation fan. In this way, manual intervention can be directly carried out in case of emergency, and thus the lack of safety redundancy and emergency operation ability of this control system can be avoided; Among them, in order to achieve the purpose of normal operation of the system, the system is implemented by the following technical solutions: The control end 2 is electrically connected to the intelligent monitoring module 1, the mode switching module 5 is electrically connected to the control end 2, the execution end 6 is electrically connected to the control end 2, the abnormality judgment module 12 is electrically connected to the internal pressure monitoring module 9, the current real-time monitoring module 10, and the voltage real-time monitoring module 11, and the alarm module 16 is electrically connected to the emergency stop control module 15. The electrical connection between each module can ensure the normal operation of the system; Among them, in order to achieve the purpose of removing the control panel 20 from the housing 19, the following technical solution is adopted in this system: The manual control module 3 includes a housing 17. A cover plate 18 is provided on the front side of the housing 17, and the cover plate 18 is connected to the housing 17 through a hinge. A housing 19 is provided inside the housing 17. A control panel 20 is provided on the front side of the housing 19. Connecting blocks 21 are fixedly connected to the four corners at the rear side of the control panel 20. The four connecting blocks 21 all penetrate through the slot holes on the housing 19 and extend into the interior of the housing 19. Slots are provided on the four connecting blocks 21. Two first rotating shafts 22 are embedded in the housing 19. Two rotating plates 23 are fixedly connected to the front sides of the two first rotating shafts 22. Blocks 24 are fixedly connected to the tops of the four rotating plates 23. The four blocks 24 are respectively slidably embedded in the four slots. Circular plates 25 are fixedly sleeved on the outer parts of the two first rotating shafts 22. Two torsion springs 26 are sleeved on the outer parts of the two first rotating shafts 22. The inner ends of the four torsion springs 26 are respectively fixedly connected to the outer sides of the four circular plates 25. The outer ends of the four torsion springs 26 are fixedly connected to the inner wall of the housing 19. A connecting block 27 is fixedly embedded in the housing 19. A moving frame 28 is slidably embedded in the connecting block 27. Slots 29 are provided on the two first rotating shafts 22. Two convex blocks 30 are fixedly connected to the moving frame 28. The two convex blocks 30 are respectively slidably embedded in the two slots 29. Push the moving frame 28, so that the two convex blocks 30 can move to the right. Since the convex blocks 30 are slidably embedded in the slots 29, when the convex blocks 30 move, the two first rotating shafts 22 can be rotated. The rotation of the two first rotating shafts 22 drives the four circular plates 25 to rotate. When the first rotating shafts 22 rotate, the torsion springs 26 can undergo elastic deformation. The rotation of the two first rotating shafts 22 drives the four rotating plates 23 and the four blocks 24 to move, so that the four blocks 24 are moved out of the four slots, thereby releasing the restriction on the four connecting blocks 21, and then the control panel 20 can be removed from the housing 19; Among them, in order to achieve the purpose of changing the orientation of the control panel 20, the following technical solution is adopted in this system: Two connecting rods 31 are fixedly connected inside the housing 17. Two moving blocks 32 are slidably sleeved on the outer parts of the two connecting rods 31. Springs 33 are sleeved on the outer parts of the two connecting rods 31. The outer ends of the two springs 33 are respectively fixedly connected to the four moving blocks 32. Columns 34 are fixedly connected to the top and bottom of the housing 19. Fixed blocks 35 are sleeved on the outer parts of the two columns 34, and the fixed blocks 35 are connected to the columns 34 through damping bearings. Two support rods 36 are provided at the rear sides of the two fixed blocks 35 and are connected to the two fixed blocks 35 through movable hinge seats. The four support rods 36 are respectively connected to the four moving blocks 32 through movable hinge seats. Stopping blocks 37 are fixedly connected to the inner walls of the top and bottom of the housing 17. The two stopping blocks 37 are respectively in contact with the rear sides of the two fixed blocks 35; Among them, to achieve the purpose of wiping fingerprints, the system is implemented by the following technical solution: A frame 38 is sleeved on the front side of the housing 19. The frame 38 is sleeved outside the control panel 20. Two reciprocating lead screws 39 are embedded in the frame 38. Sliding seats 40 are sleeved outside both of the two reciprocating lead screws 39. The sliding seats 40 are connected to the reciprocating lead screws 39 through ball screw pairs. A cleaning pad 41 is fixedly connected to the front sides of the two sliding seats 40. The rear side of the cleaning pad 41 is on the same horizontal plane as the front side of the control panel 20. Fixed sleeves of gears 42 are provided outside the tops of both of the two reciprocating lead screws 39. Two substrates 43 are fixedly connected to the rear side of the cover plate 18. Rack plates 44 are fixedly connected to the inner sides of the two substrates 43; Among them, to achieve the purpose of installation, the system is implemented by the following technical solution: Two mounting blocks 45 are fixedly connected to both sides of the housing 17. A first magnetic block 46 is fixedly connected to the front side of the cover plate 18. A second magnetic block 47 is fixedly connected to the top of the housing 17. The mounting blocks 45 can facilitate the installation of the housing 17, thereby installing the control panel 20 at the position of the open-type condensing fan.

[0020] The usage process of the present invention is as follows: When controlling the operation of the condensing fan, the intelligent monitoring module 1 can monitor the operating parameters of the condensing fan. During the monitoring, the condensing temperature monitoring module 7 monitors the outlet temperature of the condensing fan in real time. The ambient temperature monitoring module 8 monitors the ambient temperature where the device is located. The internal pressure monitoring module 9 monitors the internal pressure of the condensing fan to prevent abnormal pressure. The current real-time monitoring module 10 monitors the current of the condensing fan during operation. The voltage real-time monitoring module 11 monitors the voltage of the condensing fan during operation. When the ambient temperature monitored by the ambient temperature monitoring module 8 differs greatly from the temperature monitored by the condensing temperature monitoring module 7, the automatic control module 4 can issue a control instruction. Then, the intelligent frequency conversion module 13 in the execution end 6 can receive the instruction and adjust the operating frequency of the condensing fan to achieve stepless speed regulation, thereby increasing the air volume, so that the ambient temperature can drop rapidly, and then the ambient temperature can quickly become consistent with the outlet temperature of the condensing fan; In addition, a start-stop control module 14 is provided in the execution end 6, so that the condensing fan can be controlled to operate intermittently in a low-temperature environment to avoid the condensing fan running at high load for a long time and increase the service life of the condensing fan. An abnormal judgment module 12 is designed. When the condensing fan is operating, it can judge whether the condensing fan is abnormal according to the monitored pressure, current, and voltage. When an abnormality occurs, the automatic control module 4 can control the emergency stop control module 15 in the execution end 6 to work, thereby controlling the condensing fan to stop working immediately to avoid losses. After the emergency stop control module 15 works, the alarm module 16 can work, thereby alarming the staff; Since the control terminal 2 consists of a manual control module 3 and an automatic control module 4, and a mode switching module 5 is also designed, when the control algorithm of the automatic control module 4 fails or the control system crashes, the mode switching module 5 can be used to switch the automatic control to manual control. Then, the staff can use the manual control module 3 to control the operation of the condensation fan. In this way, manual intervention can be directly carried out in case of emergency, thus avoiding the lack of safety redundancy and emergency operation ability in this control system; When using the manual control module 3 to control the operation of the condensation fan, the cover plate 18 is opened to make the first magnet 46 and the second magnet 47 attract each other, so as to remove the occlusion of the control panel 20. Then, the operation of the condensation fan can be controlled on the control panel 20. When the control panel 20 needs to be disassembled for maintenance after long-term use, the moving frame 28 is pushed, so that the two convex blocks 30 can move to the right. Since the convex blocks 30 are slidably embedded in the sliding grooves 29, when the convex blocks 30 move, the two first rotating shafts 22 can rotate. The rotation of the two first rotating shafts 22 drives the four circular plates 25 to rotate. When the first rotating shafts 22 rotate, the torsion springs 26 can undergo elastic deformation. The rotation of two of the first rotating shafts 22 drives the four rotating plates 23 and the four clamping blocks 24 to move, so that the four clamping blocks 24 are removed from the four clamping grooves, thereby releasing the restriction on the four connecting blocks 21. Then, the control panel 20 can be removed from the housing 19, which is convenient for the maintenance of the control panel 20. It is not necessary to disassemble the entire outer shell 17 and the cover plate 18, and there is no need to frequently turn the screws during disassembly, which can avoid the phenomenon of insecure installation. When the control panel 20 needs to be reinstalled, the control panel 20 and the connecting block 21 are inserted back along the original path. Then, the thrust on the moving frame 28 is slowly reduced. Then, under the action of the rebound of the torsion spring 26, the two first rotating shafts 22 can rotate in the reverse direction, and then the rotating plates 23 and the clamping blocks 24 rotate in the reverse direction, so that the four clamping blocks 24 can be stuck in the four clamping grooves again, thereby restricting the connecting block 21. In this way, the control panel 20 can be fixed to prevent it from falling off; After the use of the control panel 20 is completed, pull the housing 19 forward, so that the housing 19 and the components on the housing 19 move forward. Since the support rod 36 can move between the moving block 32 and the fixed block 35 connected by a movable hinge seat, when pulling forward, the two moving blocks 32 on the connecting rod 31 can be brought closer, and at the same time the spring 33 is compressed. Then the housing 19 can be removed from the outer shell 17. When moving forward, the two gears 42 will engage with the two toothed plates 44. When engaging, the two reciprocating lead screws 39 can be rotated. The rotation of the two reciprocating lead screws 39 drives the two sliding seats 40 and the cleaning pads 41 to move up and down for a round trip. In this way, the cleaning pads 41 can move up and down once. In this way, when pulling the housing 19 forward, the control panel 20 can be wiped once, so as to wipe off the fingerprints on the control panel 20. After pulling the housing 19 forward, hold the two fixed blocks 35 by hand and then rotate the housing 19 so that it can rotate half a circle, so that the control panel 20 faces backward. Then, through the rebound of the two springs 33, the housing 19 and other components can move backward into the inner part of the outer shell 17. And when moving backward, the gear 42 will also engage with the toothed plate 44 once. In this way, the control panel 20 can be wiped again. When the control panel 20 moves backward into the inner part of the outer shell 17, it can play a protective effect on the control panel 20. During use, it can avoid damage to the control panel 20 caused by negligence that the cover plate 18 is not closed. Closing the cover plate 18 can provide double protection and better safety; When using the control panel 20, it is also the same to pull the housing 19 forward and then rotate the housing 19 to make the control panel 20 face forward. Then the condensing fan can be controlled through the control panel 20.

[0021] The above is only a preferred embodiment of the present invention. Any person skilled in the art may modify the present invention by using the technical solutions described above or modify it into an equivalent technical solution. Therefore, any simple modification or equivalent replacement made according to the technical solutions of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. An energy-saving control system for the condenser fan of a refrigeration device, characterized in that, Comprising: An intelligent monitoring module (1) for monitoring the parameters of the condensing fan during operation; A control terminal (2) for issuing control instructions for the fan according to the parameters monitored by the intelligent monitoring module (1). The control terminal (2) includes a manual control module (3) and an automatic control module (4). The manual control module (3) is used for manually controlling the operation of the fan by humans, and the automatic control module (4) is used for automatically controlling the operation of the fan to release human effort. The control terminal (2) is connected to the output end of the intelligent monitoring module (1); A mode switching module (5) for switching the control method of the fan. The mode switching module (5) is connected to the input end of the control terminal (2); An execution terminal (6) for directly driving the condensing fan to operate according to the control instructions. The execution terminal (6) is connected to the output end of the control terminal (2).

2. The energy-saving control system for the condensing fan of a refrigeration device according to claim 1, wherein: The intelligent monitoring module (1) includes a condensing temperature monitoring module (7), an ambient temperature monitoring module (8), an internal pressure monitoring module (9), a current real-time monitoring module (10), and a voltage real-time monitoring module (11). The condensing temperature monitoring module (7) is used for real-time monitoring of the outlet temperature of the condensing fan. The ambient temperature monitoring module (8) is used for monitoring the ambient temperature where the equipment is located. The internal pressure monitoring module (9) is used for monitoring the internal pressure of the condensing fan to prevent abnormal pressure. The current real-time monitoring module (10) is used for monitoring the current of the condensing fan during operation. The voltage real-time monitoring module (11) is used for monitoring the voltage of the condensing fan during operation. An abnormality judgment module (12) is provided at the output ends of the internal pressure monitoring module (9), the current real-time monitoring module (10), and the voltage real-time monitoring module (11). The abnormality judgment module (12) is used for judging whether there is an abnormality in the condensing fan according to the monitored pressure, current, and voltage.

3. The energy-saving control system for the condensing fan of a refrigeration device according to claim 1, characterized in that: The execution terminal (6) includes an intelligent frequency conversion module (13), a start-stop control module (14), and an emergency stop control module (15). The intelligent frequency conversion module (13) is used for adjusting the operating frequency of the condensing fan according to the temperature difference to achieve stepless speed regulation. The start-stop control module (14) is used for controlling the intermittent start and stop of the condensing fan in a low-temperature environment. The emergency stop control module (15) is used for controlling the condensing fan to stop working immediately when the pressure, current, and voltage of the condensing fan are abnormal. An alarm module (16) is provided at the output end of the emergency stop control module (15). The alarm module (16) is used for alarming the staff when the condensing fan stops working abnormally.

4. The energy-saving control system for the condensing fan of a refrigeration device according to claim 1, characterized in that: The control terminal (2) is electrically connected to the intelligent monitoring module (1), the mode switching module (5) is electrically connected to the control terminal (2), and the execution terminal (6) is electrically connected to the control terminal (2).

5. The energy-saving control system for the condensing fan of a refrigeration device according to claim 2, characterized in that: The abnormality judgment module (12) is electrically connected to the internal pressure monitoring module (9), the current real-time monitoring module (10), and the voltage real-time monitoring module (11).

6. The energy-saving control system for the condensation fan of a refrigeration device according to claim 3, wherein: The alarm module (16) is electrically connected to the emergency stop control module (15).

7. A condensing fan energy-saving control system for a refrigeration device according to claim 1, characterized in that: The manual control module (3) includes a housing (17). A cover plate (18) is provided on the front side of the housing (17), and the cover plate (18) is connected to the housing (17) through a hinge. A housing body (19) is provided inside the housing (17). A control panel (20) is provided on the front side of the housing body (19). Connecting blocks (21) are fixedly connected to the four corners at the rear side of the control panel (20). The four connecting blocks (21) all penetrate through the slot holes on the housing body (19) and extend into the interior of the housing body (19). Card slots are provided on the four connecting blocks (21). Two rotating shafts I (22) are embedded in the housing body (19). Two rotating plates (23) are fixedly connected to the front sides of the two rotating shafts I (22). Card blocks (24) are fixedly connected to the tops of the four rotating plates (23). The four card blocks (24) are respectively slidably embedded in the four card slots. Circular plates (25) are fixedly sleeved on the outer sides of the two rotating shafts I (22). Two torsion springs (26) are sleeved on the outer sides of the two rotating shafts I (22). The inner ends of the four torsion springs (26) are respectively fixedly connected to the outer sides of the four circular plates (25). The outer ends of the four torsion springs (26) are fixedly connected to the inner wall of the housing body (19). An adapter block (27) is fixedly embedded in the housing body (19). A moving frame (28) is slidably embedded in the adapter block (27). Chute grooves (29) are provided on the two rotating shafts I (22). Two convex blocks (30) are fixedly connected to the moving frame (28). The two convex blocks (30) are respectively slidably embedded in the two chute grooves (29).

8. The energy-saving control system for the condensing fan of a refrigeration device according to claim 7, characterized in that: Two connecting rods (31) are fixedly connected inside the housing (17). Two moving blocks (32) are slidably sleeved on the outer sides of the two connecting rods (31). Springs (33) are sleeved on the outer sides of the two connecting rods (31). The outer ends of the two springs (33) are respectively fixedly connected to the four moving blocks (32). Columns (34) are fixedly connected to the top and bottom of the housing body (19). Fixed blocks (35) are sleeved on the outer sides of the two columns (34), and the fixed blocks (35) are connected to the columns (34) through damping bearings. Two support rods (36) are provided at the rear sides of the two fixed blocks (35), and the two support rods (36) are connected to the two fixed blocks (35) through movable hinge seats. The four support rods (36) are respectively connected to the four moving blocks (32) through movable hinge seats. Stopper blocks (37) are fixedly connected to the inner walls of the top and bottom of the housing (17). The two stopper blocks (37) are respectively in contact with the rear sides of the two fixed blocks (35).

9. The energy-saving control system for the condensing fan of a refrigeration device according to claim 8, characterized in that: The front side of the housing (19) is sleeved with an outer frame (38), the outer frame (38) is sleeved outside the control panel (20), two reciprocating lead screws (39) are embedded in the outer frame (38), sliding seats (40) are sleeved outside both of the two reciprocating lead screws (39), the sliding seats (40) and the reciprocating lead screws (39) are connected through ball screw pairs, a cleaning pad (41) is fixedly connected to the front sides of the two sliding seats (40), the rear side of the cleaning pad (41) and the front side of the control panel (20) are on the same horizontal plane, gears (42) are fixedly sleeved outside the tops of both of the two reciprocating lead screws (39), two substrates (43) are fixedly connected to the rear side of the cover plate (18), and tooth plates (44) are fixedly connected to the inner sides of the two substrates (43).

10. The energy-saving control system for the condensing fan of a refrigeration device according to claim 9, characterized in that: Two mounting blocks (45) are fixedly connected to both sides of the outer shell (17), a first magnetic block (46) is fixedly connected to the front side of the cover plate (18), and a second magnetic block (47) is fixedly connected to the top of the outer shell (17).

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