Heat supply network pump low-voltage frequency conversion cabinet with automatic dehumidification function

Abstract

The utility model relates to the technical field of electrical equipment, and discloses a heat supply network pump low-voltage frequency conversion cabinet with an automatic dehumidification function, the heat supply network pump low-voltage frequency conversion cabinet comprises a low-voltage frequency conversion cabinet, the front side of the low-voltage frequency conversion cabinet is rotatably provided with a cabinet door, the low-voltage frequency conversion cabinet is internally provided with a mounting rack, and the left side of the low-voltage frequency conversion cabinet is fixedly provided with a dehumidification box. Cold air is provided for the low-voltage frequency conversion cabinet through the air inlet fan blades, hot air in the low-voltage frequency conversion cabinet is sucked away through the exhaust fan blades, heat dissipation of the interior of the low-voltage frequency conversion cabinet is achieved, humid air can be sucked away by the silica gel dehumidification plate during heat dissipation operation, and in cooperation with continuous rotation of the silica gel dehumidification plate, heat dissipation efficiency is improved. Compared with a traditional device, the device integrates heat dissipation and dehumidification into a whole, meanwhile, the silica gel dehumidification plate can be dried through the exhausted hot air, and the burden of workers on replacement of the dehumidification plate is relieved.

Description

Technical Field

[0001] This application relates to the field of electrical equipment technology, and more specifically, to a low-voltage frequency converter cabinet for a heat network pump with automatic dehumidification function. Background Technology

[0002] The heating network pump is a core piece of equipment in a heating system used to transport high-temperature hot water or steam. It is widely used in centralized heating, industrial waste heat recovery and other fields. Its main function is to maintain the circulation power of the heating network and ensure that heat is efficiently and stably transported from the heat source to the user end. The low-voltage frequency converter cabinet of the heating network pump is an electrical device that controls the speed of the heating network pump motor. Its core is the frequency converter, which changes the motor speed by adjusting the power supply frequency, thereby precisely controlling the flow and pressure of the heating network.

[0003] Currently, when low-voltage frequency converter cabinets are put into use, humid environments can easily lead to a decline in the insulation performance of electrical components, potentially causing short circuits or leakage. Secondly, metal components such as terminals and relay contacts, when exposed to moisture for extended periods, will experience accelerated oxidation and corrosion, resulting in poor contact or abnormal signal transmission. Therefore, dehumidification equipment is usually installed to prevent moisture from entering the cabinet. In actual use, the most common dehumidification method relies on dehumidifying filters. The principle is to filter moisture from the cold, humid outside air to ensure the air inside the cabinet remains dry during convection cooling. However, dehumidifying filters experience performance degradation after long-term use. For example, once a silica gel dehumidifying plate becomes saturated with moisture, it must be removed and air-dried to restore its dehumidification capacity. This process is not only cumbersome but also increases the workload of maintenance personnel, affecting the continuity and efficiency of equipment operation. Utility Model Content

[0004] To overcome the shortcomings of the prior art, this application provides a low-pressure frequency converter cabinet for a heat network pump with automatic dehumidification function, which has the advantage of automatic dehumidification.

[0005] To achieve the above objectives, this application provides the following technical solution: a low-pressure inverter cabinet for a heat network pump with automatic dehumidification function, comprising a low-pressure inverter cabinet, a cabinet door rotatably installed on the front side of the low-pressure inverter cabinet, an installation frame provided inside the low-pressure inverter cabinet, a dehumidification box fixedly installed on the left side of the low-pressure inverter cabinet, an exhaust vent opened on the top of the low-pressure inverter cabinet, and a connecting pipe fixedly installed on the left side of the inner wall of the low-pressure inverter cabinet, the top of the connecting pipe being interconnected with the exhaust vent, and the bottom of the connecting pipe being interconnected with the dehumidification box;

[0006] The dehumidifier box has a rotating ring inside, and a silica gel dehumidifier plate is fixedly installed inside the rotating ring. An air inlet pipe is fixedly installed inside the dehumidifier box, with one end extending to the outside of the dehumidifier box for ventilation and the other end close to the silica gel dehumidifier plate. An air inlet fan blade is rotatably installed inside the air inlet pipe. An exhaust pipe is fixedly installed inside the dehumidifier box, with its top extending to the outside of the dehumidifier box for exhaust and its bottom close to the silica gel dehumidifier plate.

[0007] As a preferred embodiment of this application, the air inlet pipe is located slightly below the center of the silicone dehumidifying plate, and the air outlet pipe is located slightly above the center of the silicone dehumidifying plate.

[0008] As a preferred technical solution of this application, the outer wall of the rotating ring is fixedly provided with teeth, the bottom of the dehumidification box is fixedly installed with a first motor, the bottom of the rotating ring is rotatably installed with a gear, the gear and the rotating ring are meshed with each other through teeth, the output shaft of the first motor is fixedly installed with two sets of pulleys, one set of pulleys is fixedly connected to the gear, and the other set of pulleys is fixedly connected to the fan blades, and the two sets of pulleys are connected by synchronous belt drive.

[0009] As a preferred technical solution of this application, a second motor is fixedly installed inside the exhaust port, and an exhaust fan blade is rotatably installed inside the exhaust port. The output shaft of the second motor and the exhaust fan blade are fixedly connected.

[0010] As a preferred technical solution of this application, the outer wall of the dehumidification box is provided with a dustproof mechanism. The dustproof mechanism includes a slot starting from the left outer wall of the dehumidification box. The upper and lower ends of the slot are fixedly installed with second magnetic blocks. The slot is fitted with an installation frame. The installation frame is fixedly installed with a dustproof net. The upper and lower ends of the right side of the installation frame are fixedly installed with first magnetic blocks. The first and second magnetic blocks are magnetically attracted to each other.

[0011] As a preferred technical solution of this application, the top of the card slot is provided with a disassembly groove.

[0012] Compared with the prior art, the beneficial effects of this application are as follows:

[0013] 1. This application provides cool air to the low-voltage frequency converter cabinet through the intake fan blades and removes the hot air inside the cabinet through the exhaust fan blades, thereby achieving heat dissipation inside the cabinet. During the heat dissipation operation, the humid air is absorbed by the silica gel dehumidification plate, and with the continuous rotation of the silica gel dehumidification plate, the exhaust hot air desorbs the moisture adsorbed on the silica gel dehumidification plate. Compared with traditional devices, this device integrates heat dissipation and dehumidification, ensuring the normal operation of the electrical components inside the low-voltage frequency converter cabinet. At the same time, the exhaust hot air can also dry the silica gel dehumidification plate, reducing the burden on the staff to replace the dehumidification plate.

[0014] 2. This application uses a dustproof net design to prevent dust from the outside air from entering the low-voltage frequency converter cabinet. At the same time, the disassembly slot and two sets of first and second magnetic blocks allow the staff to quickly remove the dustproof net for cleaning during maintenance, which improves work efficiency, reduces workload, and protects the electrical components inside the low-voltage frequency converter cabinet. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the structure of this application;

[0017] Figure 2 This is a schematic diagram of the internal structure of the low-voltage frequency converter cabinet in this application;

[0018] Figure 3 This is a schematic diagram of the exhaust outlet structure of this application;

[0019] Figure 4 This is a schematic diagram of the silica gel dehumidifier plate structure of this application;

[0020] Figure 5 This is a schematic diagram of the internal structure of the dehumidifier box in this application;

[0021] Figure 6 This is a schematic diagram of the disassembled structure of the rotating ring and air inlet pipe in this application;

[0022] Figure 7 This is a schematic diagram of the disassembled structure of the mounting frame and card slot in this application.

[0023] In the diagram: 1. Low-voltage frequency converter cabinet; 11. Cabinet door; 12. Mounting bracket; 2. Dehumidification box; 21. Rotating ring; 22. Silica gel dehumidification plate; 23. Gear; 24. First motor; 25. Air inlet duct; 26. Air inlet fan blade; 27. Pulley; 28. Synchronous belt; 29. ​​Gear; 3. Exhaust vent; 31. Second motor; 32. Exhaust fan blade; 33. Connecting pipe; 34. Exhaust duct; 4. Dustproof mechanism; 41. Slot; 42. Mounting frame; 43. Dustproof net; 44. First magnetic block; 45. Second magnetic block; 46. Disassembly slot. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are also within the scope of protection of this application.

[0025] like Figures 1 to 7 As shown, the low-pressure inverter cabinet with automatic dehumidification function of the heat network pump provided in this application includes a low-pressure inverter cabinet 1. A cabinet door 11 is rotatably installed on the front side of the low-pressure inverter cabinet 1. An installation frame 12 is provided inside the low-pressure inverter cabinet 1. A dehumidification box 2 is fixedly installed on the left side of the low-pressure inverter cabinet 1. An exhaust vent 3 is opened on the top of the low-pressure inverter cabinet 1. A connecting pipe 33 is fixedly installed on the left side of the inner wall of the low-pressure inverter cabinet 1. The top of the connecting pipe 33 is connected to the exhaust vent 3, and the bottom of the connecting pipe 33 is connected to the dehumidification box 2.

[0026] A rotating ring 21 is rotatably installed inside the dehumidification box 2. A silica gel dehumidification plate 22 is fixedly installed inside the rotating ring 21. An air inlet pipe 25 is fixedly installed inside the dehumidification box 2. One end of the air inlet pipe 25 extends to the outside of the dehumidification box 2 for ventilation, and the other end of the air inlet pipe 25 is close to the silica gel dehumidification plate 22. An air inlet fan blade 26 is rotatably installed inside the air inlet pipe 25. An exhaust pipe 34 is fixedly installed inside the dehumidification box 2. The top of the exhaust pipe 34 extends to the outside of the dehumidification box 2 for exhaust, and the bottom of the exhaust pipe 34 is close to the silica gel dehumidification plate 22.

[0027] An air inlet can be provided on the left side wall of the low-voltage frequency converter cabinet 1 to allow air from the air inlet duct 25 to enter the cabinet. The position of the air inlet corresponds to the port of the air inlet duct 25 near the silica gel dehumidifier plate 22, so that air from the air inlet duct 25 can enter the low-voltage frequency converter cabinet 1. In addition, the bottom of the connecting pipe 33, which is connected to the dehumidifier box 2, corresponds to the bottom of the exhaust pipe 34, so that air from the low-voltage frequency converter cabinet 1 can enter the exhaust pipe 34 through the connecting pipe 33.

[0028] In use, operators can install relevant electrical equipment inside the low-voltage frequency converter cabinet 1 using the mounting bracket 12. Then, they activate the intake fan blades 26 and the silica gel dehumidifier plate 22. As the intake fan blades 26 rotate, humid, cold air from the outside passes through the intake duct 25 and is dehumidified by the silica gel dehumidifier plate 22 before entering the low-voltage frequency converter cabinet 1. The rotation of the rotating ring 21 changes the position of the silica gel dehumidifier plate 22, allowing the humid, cold air to be dehumidified by different areas of the silica gel dehumidifier plate 22 before entering the cabinet, thus ensuring that dry, fresh air enters the cabinet. Since hot air is less dense than cold air, it rises. Placing the exhaust vent 3 at the top of the low-voltage frequency converter cabinet 1 enhances air convection during heat dissipation. As fresh air continuously enters, the hot air inside the low-voltage inverter cabinet 1 is drawn to the exhaust port 3 and then enters the connecting pipe 33. Subsequently, the hot air in the connecting pipe 33 is discharged into the exhaust pipe 34 through the silicone dehumidifying plate 22, and finally the hot air is discharged from the top of the exhaust pipe 34.

[0029] Cool air is supplied to the low-voltage frequency converter cabinet 1 through the intake fan blades 26, and hot air inside the low-voltage frequency converter cabinet 1 is drawn out through the exhaust vent 3, thus achieving heat dissipation inside the low-voltage frequency converter cabinet 1. During the heat dissipation operation, the humid air is absorbed by the silica gel dehumidification plate 22, and with the continuous rotation of the silica gel dehumidification plate 22, the exhaust hot air desorbs the moisture adsorbed in the silica gel dehumidification plate 22. Compared with traditional devices, this device integrates heat dissipation and dehumidification, ensuring the normal operation of the electrical components inside the low-voltage frequency converter cabinet 1. At the same time, the exhaust hot air can also dry the silica gel dehumidification plate 22, reducing the burden on the staff to replace the dehumidification plate.

[0030] The air inlet pipe 25 is located slightly below the center of the silicone dehumidifying plate 22, and the air outlet pipe 34 is located slightly above the center of the silicone dehumidifying plate 22.

[0031] Cold air enters the low-voltage inverter cabinet 1 from below the silicone dehumidifying plate 22, while hot air is discharged from above the silicone dehumidifying plate 22. At this time, in conjunction with the rotation of the silicone dehumidifying plate 22, the lower part of the silicone dehumidifying plate 22 will rotate to the top to air dry after absorbing moisture, while the upper part of the silicone dehumidifying plate 22 will rotate to the bottom to dehumidify after air drying, thus achieving efficient recycling.

[0032] The outer wall of the rotating ring 21 is fixedly provided with teeth 23. The bottom of the dehumidification box 2 is fixedly installed with a first motor 24. The bottom of the rotating ring 21 is rotatably installed with a gear 29. The gear 29 and the rotating ring 21 mesh with each other through the teeth 23. The output shaft of the first motor 24 is fixedly installed with two sets of pulleys 27. One set of pulleys 27 is fixedly connected to the gear 29, and the other set of pulleys 27 is fixedly connected to the fan blade 26. The two sets of pulleys 27 are connected by a synchronous belt 28.

[0033] During operation, the operator starts the first motor 24, which drives the pulley 27 to rotate. The two pulleys 27 are connected by a synchronous belt 28, causing them to rotate synchronously. The lower pulley 27 then drives the gear 29 to rotate, and the upper pulley 27 drives the intake fan blades 26 to rotate. The rotation of the intake fan blades 26 continuously draws cool outside air into the low-voltage inverter cabinet 1 through the air inlet pipe 25. The rotation of the gear 29, through its teeth 23, drives the rotating ring 21 to rotate. The diameter of the gear 29 is smaller than that of the rotating ring 21. When the intake fan blades 26 rotate at high speed, the rotating ring 21 rotates slowly due to the smaller diameter of the gear 29, ensuring effective dehumidification. A second motor 31 is fixedly installed inside the exhaust vent 3, and an exhaust fan blade 32 is rotatably installed inside the exhaust vent 3. The output shaft of the second motor 31 is fixedly connected to the exhaust fan blade 32.

[0034] The operation of the second motor 31 will drive the exhaust fan blades 32 to rotate. As the exhaust fan blades 32 rotate, the hot air inside the low-voltage frequency converter cabinet 1 will be quickly drawn to the exhaust port 3.

[0035] The outer wall of the dehumidification box 2 is provided with a dustproof mechanism 4. The dustproof mechanism 4 includes a slot 41 opened on the left outer wall of the dehumidification box 2. The upper and lower ends of the slot 41 are fixedly installed with second magnetic blocks 45. The slot 41 is fitted with an installation frame 42. The installation frame 42 is fixedly installed with a dustproof net 43. The upper and lower ends of the right side of the installation frame 42 are fixedly installed with first magnetic blocks 44. The first magnetic blocks 44 and the second magnetic blocks 45 are magnetically attracted to each other.

[0036] During heat dissipation and dehumidification operations, outside air passes through the dust filter 43 to filter out dust and impurities before entering the air inlet duct 25. During maintenance, the staff can pry the mounting frame 42 outward to complete the disassembly. After cleaning the dust on the dust filter 43, the staff can insert the mounting frame 42 into the slot 41 so that the mounting frame 42 and the slot 41 can be attracted to each other by the second magnetic block 45 and the first magnetic block 44 to complete the installation.

[0037] The top of the card slot 41 is provided with a disassembly slot 46.

[0038] The dustproof mesh 43 design prevents dust from the outside air from entering the low-voltage frequency converter cabinet 1.

[0039] During maintenance, workers only need to insert their fingers into the disassembly slot 46 and then pry the mounting frame 42 outwards to complete the disassembly. This application, through the disassembly slot 46 and two sets of first magnetic blocks 44 and second magnetic blocks 45, allows workers to quickly remove the dust filter 43 for cleaning during maintenance, improving work efficiency, reducing workload, and protecting the electrical components inside the low-voltage frequency converter cabinet 1.

[0040] The working principle and usage process of this application:

[0041] In use, the operator can install the electrical equipment inside the low-voltage frequency converter cabinet 1 using the mounting bracket 12, and then start the first motor 24. The operation of the first motor 24 will drive the pulley 27 to rotate. However, the two sets of pulleys 27 are connected by a synchronous belt 28, so that the two sets of pulleys 27 rotate synchronously. Furthermore, the lower pulley 27 drives the gear 29 to rotate, and the upper pulley 27 drives the intake fan blades 26 to rotate. As the intake fan blades 26 rotate, the outside humid and cold air will enter the interior of the low-voltage frequency converter cabinet 1 through the air inlet pipe 25 and after being dehumidified by the silica gel dehumidification plate 22. The rotation of the gear 29 will drive the rotating ring 21 to rotate through the teeth 23. The rotation of the rotating ring 21 will change the position of the silica gel dehumidification plate 22. At this position, before entering the low-voltage inverter cabinet 1, the humid and cold air will be dehumidified by different areas of the silicone dehumidifying plate 22 to avoid the failure of the silicone dehumidifying plate 22. When the inlet fan blade 26 rotates at high speed, since the diameter of the gear 29 is smaller than that of the rotating ring 21, the rotating ring 21 will rotate slowly. Then, the operation of the second motor 31 will drive the exhaust fan blade 32 to rotate. As the exhaust fan blade 32 rotates, the hot air inside the low-voltage inverter cabinet 1 will be drawn to the exhaust port 3. After being drawn to the exhaust port 3, the hot air inside the low-voltage inverter cabinet 1 will enter the connecting pipe 33. Then, the hot air in the connecting pipe 33 will be discharged into the exhaust pipe 34 through the silicone dehumidifying plate 22. Finally, the hot air will be discharged from the top of the exhaust pipe 34.

[0042] At this time, cold air enters the low-voltage frequency converter cabinet 1 from below the silicone dehumidifying plate 22, while hot air is discharged from above the silicone dehumidifying plate 22. With the rotation of the silicone dehumidifying plate 22, the lower part of the silicone dehumidifying plate 22 will rotate to the top to be dried after absorbing moisture, while the upper part of the silicone dehumidifying plate 22 will rotate to the bottom to be dehumidified after being dried, thus achieving efficient recycling.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A low-voltage inverter cabinet for a heat network pump with automatic dehumidification function, comprising a low-voltage inverter cabinet (1), characterized in that: The low-voltage frequency converter cabinet (1) has a cabinet door (11) rotatably installed on the front side. The low-voltage frequency converter cabinet (1) has an installation frame (12) inside. The low-voltage frequency converter cabinet (1) has a dehumidification box (2) fixedly installed on the left side. The low-voltage frequency converter cabinet (1) has an exhaust vent (3) on the top. The low-voltage frequency converter cabinet (1) has a connecting pipe (33) fixedly installed on the left side of the inner wall. The top of the connecting pipe (33) and the exhaust vent (3) are connected to each other. The bottom of the connecting pipe (33) and the dehumidification box (2) are connected to each other. The dehumidification box (2) is rotatably installed inside a rotating ring (21), and a silica gel dehumidification plate (22) is fixedly installed inside the rotating ring (21). An air inlet pipe (25) is fixedly installed inside the dehumidification box (2). One end of the air inlet pipe (25) extends to the outside of the dehumidification box (2) for ventilation, and the other end of the air inlet pipe (25) is close to the silica gel dehumidification plate (22). An air inlet fan blade (26) is rotatably installed inside the air inlet pipe (25). An exhaust pipe (34) is fixedly installed inside the dehumidification box (2). The top of the exhaust pipe (34) extends to the outside of the dehumidification box (2) for exhaust, and the bottom of the exhaust pipe (34) is close to the silica gel dehumidification plate (22).

2. The low-voltage inverter cabinet for a heat network pump with automatic dehumidification function according to claim 1, characterized in that: The air inlet pipe (25) is located slightly below the center of the silicone dehumidifying plate (22), and the air outlet pipe (34) is located slightly above the center of the silicone dehumidifying plate (22).

3. The low-voltage inverter cabinet for a heat network pump with automatic dehumidification function according to claim 1, characterized in that: The outer wall of the rotating ring (21) is fixedly provided with teeth (23). The bottom of the dehumidification box (2) is fixedly installed with a first motor (24). The bottom of the rotating ring (21) is rotatably installed with a gear (29). The gear (29) and the rotating ring (21) mesh with each other through teeth (23). The output shaft of the first motor (24) is fixedly installed with two sets of pulleys (27). One set of pulleys (27) is fixedly connected to the gear (29), and the other set of pulleys (27) is fixedly connected to the fan blade (26). The two sets of pulleys (27) are connected by a synchronous belt (28).

4. The low-voltage inverter cabinet for a heat network pump with automatic dehumidification function according to claim 1, characterized in that: The exhaust port (3) is fixedly installed with a second motor (31) inside, and an exhaust fan blade (32) is rotatably installed inside the exhaust port (3). The output shaft of the second motor (31) and the exhaust fan blade (32) are fixedly connected.

5. The low-voltage inverter cabinet for a heat network pump with automatic dehumidification function according to any one of claims 1-4, characterized in that: The outer wall of the dehumidification box (2) is provided with a dustproof mechanism (4). The dustproof mechanism (4) includes a slot (41) opened on the left outer wall of the dehumidification box (2). The upper and lower ends of the slot (41) are fixedly installed with second magnetic blocks (45). The slot (41) is fitted with an installation frame (42). The installation frame (42) is fixedly installed with a dustproof net (43). The upper and lower ends of the right side of the installation frame (42) are fixedly installed with first magnetic blocks (44). The first magnetic blocks (44) and the second magnetic blocks (45) are magnetically attracted to each other.

6. The low-voltage inverter cabinet for a heat network pump with automatic dehumidification function according to claim 5, characterized in that: The top of the card slot (41) is provided with a disassembly slot (46).

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