Novel explosion-proof frequency converter

Abstract

The utility model relates to the technical field of frequency converters, and discloses a novel explosion-proof frequency converter which comprises an industrial explosion-proof frequency converter, a heat preservation water tank and a filter tank are fixedly arranged in the middle of the back face of the industrial explosion-proof frequency converter, and a cold guide plate is embedded in the middle of one side of the heat preservation water tank. One side of the cold guide plate is connected with a cooling fin through a semiconductor chilling plate, a cooling fan is fixedly installed on one side of the cooling fin, a snakelike copper pipe is fixedly arranged in the heat preservation water tank, and the two ends of the snakelike copper pipe are fixedly connected with an input pipe and an output pipe respectively. Air outside the industrial explosion-proof frequency converter can be extracted through the exhaust fan and can be conveyed into the industrial explosion-proof frequency converter through the snakelike copper pipe, in a high-temperature environment, the cold guide plate can be refrigerated through the semiconductor refrigeration piece, the cold guide plate can transfer low temperature to water in the heat preservation water tank, the water temperature is reduced, and the heat preservation effect is improved. Cold water can actively cool airflow through the snakelike copper pipe, so that cold air is formed.

Description

Technical Field

[0001] The utility model relates to the technical field of frequency converters, in particular to a novel explosion-proof frequency converter. Background Art

[0002] Frequency converter, also known as AC variable frequency speed regulator, is a thyristor AC speed regulating appliance. It adjusts the speed of the motor by changing the frequency and voltage of the AC motor to achieve precise regulation of the motor speed. Frequency converters are widely used in motor speed control systems. Ordinary frequency converters are suitable for general environments and do not have explosion-proof functions. Explosion-proof frequency converters are mainly used in highly dangerous industrial fields such as petrochemicals, pharmaceuticals, and coal mines to ensure that the equipment will not cause sparks during operation, thereby avoiding the risk of explosion.

[0003] The existing explosion-proof inverter can refer to the Chinese utility model patent with the authorization announcement number CN209545425U, which discloses a new explosion-proof inverter, "including an inverter frame and a heat sink, wherein the inverter frame is provided with a combination of electrical components, and the heat sink is connected to the inverter frame through a mounting portion. The utility model effectively solves the heat dissipation problem of the inverter in the explosion-proof control cabinet, while the explosion-proof level of the explosion-proof control cabinet remains unchanged. The new explosion-proof inverter has stable performance and can operate stably for a long time in the explosion-proof control cabinet. There is no heat accumulation problem in the control cabinet, which effectively solves the use problem of the inverter in the explosion-proof control cabinet."

[0004] When the above-mentioned equipment is in use, it does not have cooling capacity in a high temperature environment, and the heat dissipation effect of the fan will be affected, resulting in the heat generated by the inverter cannot be dissipated in time, which will reduce the heat dissipation effect and thus affect its performance and life. In addition, when the fan is conveying airflow, it is difficult to filter the dust in the airflow, which can easily cause dust to enter the inverter and pollute its interior. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a novel explosion-proof inverter, which has the advantages of good refrigeration capacity and heat dissipation effect, and solves the problems raised by the above-mentioned background technology.

[0006] The utility model provides the following technical solutions: a novel explosion-proof inverter, including an industrial explosion-proof inverter, a heat preservation water tank and a filter box are fixedly provided in the middle of the back side of the industrial explosion-proof inverter, a cold conduction plate is embedded in the middle of one side of the heat preservation water tank, one side of the cold conduction plate is connected with a heat sink through a semiconductor refrigeration plate, a heat dissipation fan is fixedly installed on one side of the heat sink, a serpentine copper tube is fixedly provided inside the heat preservation water tank, two ends of the serpentine copper tube are fixedly connected with an input pipe and an output pipe, an air inlet end of the input pipe is fixedly connected to one side of the bottom end of the filter box, an air filter element is provided inside the filter box, an exhaust fan is provided at the bottom of the back side of the industrial explosion-proof inverter, the air inlet end of the exhaust fan is connected to the air outlet end of the output pipe, the air outlet end of the exhaust fan is fixedly connected to the bottom of the back side of the industrial explosion-proof inverter, an air outlet is opened at the top of the back side of the industrial explosion-proof inverter, and a mesh is provided on the surface of the air outlet.

[0007] As a preferred technical solution of the utility model, a thermal insulation pad is provided on the surface of the semiconductor refrigeration sheet, the cold end of the semiconductor refrigeration sheet is connected to one side of a cold conduction plate, the hot end of the semiconductor refrigeration sheet is connected to a heat sink, a protective tube is fixedly provided on one side of the thermal insulation water tank, the semiconductor refrigeration sheet is located inside the protective tube, and a mesh sheet 2 is fixedly provided at one end of the protective tube.

[0008] As a preferred technical solution of the utility model, a support is fixedly provided at the bottom of the back of the industrial explosion-proof inverter, the bottom end of the exhaust fan is fixedly connected to the top of the support, and a dust cover is fixedly provided at the top of the back of the industrial explosion-proof inverter, and one side of the dust cover is connected to the air outlet.

[0009] As a preferred technical solution of the utility model, a baffle frame is fixedly provided inside the filter box, the bottom end of the air filter element is overlapped with the top end of the baffle frame, the top end of the filter box is fixedly connected with a baffle cover by screws, the surface of the baffle cover is provided with an air inlet, and the surface of the air inlet is fixedly provided with a mesh three.

[0010] As a preferred technical solution of the utility model, positioning plates are provided on both sides of the bottom of the industrial explosion-proof inverter, and two positioning holes are provided on the surfaces of the two positioning plates. Both sides of the top of the two positioning plates are welded to the two sides of the bottom of the industrial explosion-proof inverter through supporting legs.

[0011] As a preferred technical solution of the utility model, a water filling valve is fixedly connected to the top of one side of the thermal insulation water tank, and a drainage valve is fixedly connected to the bottom of one side of the thermal insulation water tank.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The new explosion-proof inverter can extract air from the outside of the industrial explosion-proof inverter through an exhaust fan, and can transport it to the inside of the industrial explosion-proof inverter through a serpentine copper tube, so as to dissipate the internal heat of the industrial explosion-proof inverter. In a high-temperature environment, the semiconductor refrigeration sheet can cool the cold plate, and the cold plate can transfer the low temperature to the water inside the insulation water tank to reduce the water temperature. The cold water can actively cool the airflow through the serpentine copper tube to form cold wind, avoiding the phenomenon of high airflow temperature, reducing the impact of high-temperature environment, and improving the heat dissipation effect inside the industrial explosion-proof inverter. The interior of the industrial explosion-proof inverter is not easy to accumulate heat, which improves its performance and service life. The heat generated by the hot end of the semiconductor refrigeration sheet can be dissipated through the heat sink and the heat dissipation fan.

[0014] 2. This new explosion-proof inverter can filter dust and impurities in the airflow during the exhaust process by arranging an air filter element inside the filter box, thereby ensuring the cleanliness of the airflow and preventing dust and impurities from entering the industrial explosion-proof inverter with the airflow and causing pollution to components. The mesh piece 1 can prevent external dust and impurities from falling into the industrial explosion-proof inverter through the air outlet, and the dust cover can improve the dust-proof effect of the mesh piece 1, and dust is not easy to fall on the surface of the mesh piece 1. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the back side of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the water tank of the utility model;

[0018] Figure 4 This is a schematic diagram of the internal structure of the water tank of the utility model;

[0019] Figure 5 It is a schematic diagram of the cross-sectional structure of the filter box of the utility model.

[0020] In the figure: 1. Industrial explosion-proof inverter; 2. Support legs; 3. Positioning plate; 4. Mesh one; 5. Dust cover; 6. Support; 7. Exhaust fan; 8. Insulated water tank; 9. Filter box; 10. Cold conduction plate; 11. Semiconductor refrigeration plate; 12. Insulation pad; 13. Heat sink; 14. Cooling fan; 15. Protective tube; 16. Mesh two; 17. Serpentine copper tube; 18. Input pipe; 19. Output pipe; 20. Drain valve; 21. Air filter element; 22. Baffle frame; 23. Baffle cover; 24. Mesh three; 25. Water injection valve. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-5 A novel explosion-proof inverter includes an industrial explosion-proof inverter 1. A heat preservation water tank 8 and a filter box 9 are fixedly provided in the middle of the back of the industrial explosion-proof inverter 1. A cold conduction plate 10 is embedded in the middle of one side of the heat preservation water tank 8. One side of the cold conduction plate 10 is connected to a heat sink 13 through a semiconductor refrigeration sheet 11. A heat dissipation fan 14 is fixedly installed on one side of the heat sink 13. A serpentine copper tube 17 is fixedly provided inside the heat preservation water tank 8. An input pipe 18 and an output pipe 19 are fixedly connected at both ends of the serpentine copper tube 17. The air inlet end of the input pipe 18 is fixedly connected to one side of the bottom end of the filter box 9. An air filter element 21 is provided inside the filter box 9. An exhaust fan 7 is provided at the bottom of the back of the industrial explosion-proof inverter 1. The exhaust fan 7 The air inlet end is connected with the air outlet end of the output pipe 19, the air outlet end of the exhaust fan 7 is fixedly connected with the bottom of the back of the industrial explosion-proof inverter 1, and an air outlet is provided at the top of the back of the industrial explosion-proof inverter 1, and a mesh 4 is provided on the surface of the air outlet. The air outside the industrial explosion-proof inverter 1 can be extracted by the exhaust fan 7, and the air can be transported to the inside of the industrial explosion-proof inverter 1 through the serpentine copper tube 17, so as to dissipate the internal heat of the industrial explosion-proof inverter 1. In a high temperature environment, the cold conduction plate 10 can be cooled by the semiconductor refrigeration sheet 11, and the cold conduction plate 10 can transfer the low temperature to the water inside the thermal insulation water tank 8 to reduce the water temperature, and the cold water can actively cool the airflow through the serpentine copper tube 17 to form cold wind.

[0023] See also Figure 5 A thermal insulation pad 12 is provided on the surface of the semiconductor refrigeration sheet 11, the cold end of the semiconductor refrigeration sheet 11 is connected to one side of the cold conduction plate 10, the hot end of the semiconductor refrigeration sheet 11 is connected to the heat sink 13, a protective tube 15 is fixedly provided on one side of the thermal insulation water tank 8, the semiconductor refrigeration sheet 11 is located inside the protective tube 15, and a mesh sheet 16 is fixedly provided at one end of the protective tube 15. The thermal insulation pad 12 can insulate the cold and hot ends of the semiconductor refrigeration sheet 11, and the temperature transfer between the cold and hot ends of the semiconductor refrigeration sheet 11 can be prevented, thereby ensuring the cooling effect. The protective tube 15 and the mesh sheet 16 can provide protection for the semiconductor refrigeration sheet 11 and the heat dissipation fan 14.

[0024] See also Figure 2A support 6 is fixedly provided at the bottom of the back side of the industrial explosion-proof inverter 1, and the bottom end of the exhaust fan 7 is fixedly connected to the top end of the support 6. A dust cover 5 is fixedly provided at the top of the back side of the industrial explosion-proof inverter 1, and one side of the dust cover 5 is connected to the air outlet. The exhaust fan 7 can be supported by the support 6. The dust cover 5 can improve the dustproof effect of the mesh 4, and dust is not easy to fall on the surface of the mesh 4.

[0025] See also Figure 5 A baffle frame 22 is fixedly provided inside the filter box 9, the bottom end of the air filter element 21 overlaps with the top end of the baffle frame 22, and a baffle cover 23 is fixedly connected to the top end of the filter box 9 by screws. An air inlet is opened on the surface of the baffle cover 23, and a mesh sheet 24 is fixedly provided on the surface of the air inlet. The air filter element 21 can be limited by the baffle cover 23 and the baffle frame 22, and the circulation of air inside and outside the filter box 9 can be ensured through the air inlet.

[0026] See also Figure 1 , positioning plates 3 are provided on both sides of the bottom end of the industrial explosion-proof inverter 1, and two positioning holes are provided on the surfaces of the two positioning plates 3. Both sides of the top ends of the two positioning plates 3 are respectively welded to the two sides of the bottom end of the industrial explosion-proof inverter 1 through supporting legs 2, and the industrial explosion-proof inverter 1 can be fixedly installed through the positioning holes of the positioning plates 3.

[0027] See also Figure 3 A water filling valve 25 is fixedly connected to the top of one side of the insulated water tank 8, and a drain valve 20 is fixedly connected to the bottom of one side of the insulated water tank 8. By opening the water filling valve 25, water can be supplied to the insulated water tank 8, and by opening the drain valve 20, drainage can be performed.

[0028] When in use, the staff first places the air filter element 21 in the filter box 9 so that its bottom end fits the baffle frame 22, and then fixes the baffle cover 23 with screws, then opens the water filling valve 25, fills water into the thermal insulation water tank 8, and then closes the water filling valve 25. When the industrial explosion-proof inverter 1 is working, the staff draws air from the outside of the industrial explosion-proof inverter 1 through the exhaust fan 7. The air filter element 21 can filter the dust and impurities in the airflow to ensure the cleanliness of the airflow. The purified airflow can be transported to the interior of the industrial explosion-proof inverter 1 through the serpentine copper tube 17. The internal heat of the industrial explosion-proof inverter 1 is discharged through the air outlet, which can dissipate the internal heat of the industrial explosion-proof inverter 1. The mesh 4 can prevent external dust and impurities from falling through the air outlet. In the industrial explosion-proof inverter 1, under high temperature environment, the staff controls the semiconductor refrigeration plate 11 to work. The cold end of the semiconductor refrigeration plate 11 can cool the cold conduction plate 10, and the heat sink 13 and the heat dissipation fan 14 can dissipate the heat generated by the hot end of the semiconductor refrigeration plate 11. The cold conduction plate 10 can transfer the low temperature to the water inside the thermal insulation water tank 8 to reduce the water temperature. The cold water can actively cool the airflow through the serpentine copper tube 17 to form cold wind, thereby avoiding the phenomenon of high airflow temperature, thereby improving the heat dissipation effect inside the industrial explosion-proof inverter 1. The staff opens the drain valve 20 to drain the water. The staff loosens the screws, removes the cover 23, removes the air filter element 21, and can clean and replace the air filter element 21.

[0029] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel explosion-proof frequency converter, comprising an industrial explosion-proof frequency converter (1), characterized in that: A heat preservation water tank (8) and a filter box (9) are fixedly provided in the middle of the back of the industrial explosion-proof inverter (1), a cold conduction plate (10) is embedded in the middle of one side of the heat preservation water tank (8), one side of the cold conduction plate (10) is connected to a heat sink (13) through a semiconductor refrigeration plate (11), a heat dissipation fan (14) is fixedly installed on one side of the heat sink (13), a serpentine copper tube (17) is fixedly provided inside the heat preservation water tank (8), and the two ends of the serpentine copper tube (17) are fixedly connected to an input tube (18) and an output tube (19) respectively. ), the air inlet end of the input pipe (18) is fixedly connected to one side of the bottom end of the filter box (9), an air filter element (21) is provided inside the filter box (9), an exhaust fan (7) is provided at the bottom of the back of the industrial explosion-proof inverter (1), the air inlet end of the exhaust fan (7) is connected to the air outlet end of the output pipe (19), the air outlet end of the exhaust fan (7) is fixedly connected to the bottom of the back of the industrial explosion-proof inverter (1), an air outlet is opened at the top of the back of the industrial explosion-proof inverter (1), and a mesh sheet (4) is provided on the surface of the air outlet.

2. A novel explosion-proof frequency converter according to claim 1, characterized in that: The surface of the semiconductor refrigeration sheet (11) is provided with a heat insulation pad (12); the cold end of the semiconductor refrigeration sheet (11) is connected to one side of the cold conduction plate (10); the hot end of the semiconductor refrigeration sheet (11) is connected to a heat sink (13); a protective tube (15) is fixedly provided on one side of the thermal insulation water tank (8); the semiconductor refrigeration sheet (11) is located inside the protective tube (15); and a mesh sheet 2 (16) is fixedly provided on one end of the protective tube (15).

3. The novel explosion-proof frequency converter according to claim 1 is characterized in that: A support (6) is fixedly provided at the bottom of the back side of the industrial explosion-proof frequency converter (1), the bottom end of the exhaust fan (7) is fixedly connected to the top end of the support (6), and a dust cover (5) is fixedly provided at the top of the back side of the industrial explosion-proof frequency converter (1), and one side of the dust cover (5) is connected to the air outlet.

4. The novel explosion-proof frequency converter according to claim 1 is characterized in that: A baffle frame (22) is fixedly provided inside the filter box (9), the bottom end of the air filter element (21) overlaps the top end of the baffle frame (22), the top end of the filter box (9) is fixedly connected to a baffle cover (23) by screws, an air inlet is provided on the surface of the baffle cover (23), and a mesh sheet three (24) is fixedly provided on the surface of the air inlet.

5. The novel explosion-proof frequency converter according to claim 1 is characterized in that: Positioning plates (3) are provided on both sides of the bottom end of the industrial explosion-proof frequency converter (1), and two positioning holes are provided on the surfaces of the two positioning plates (3). Both sides of the top ends of the two positioning plates (3) are respectively welded to both sides of the bottom end of the industrial explosion-proof frequency converter (1) through supporting legs (2).

6. The novel explosion-proof frequency converter according to claim 1 is characterized in that: A water filling valve (25) is fixedly connected to the top of one side of the thermal insulation water tank (8), and a water discharge valve (20) is fixedly connected to the bottom of one side of the thermal insulation water tank (8).

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