High-sensitivity anti-burning direct-current electromagnet
Through the wrap-around heat dissipation structure and rotatable protective structure, the problem of poor heat dissipation effect after the DC solenoid is turned on is solved, and efficient heat dissipation and current stability are achieved to avoid damage to the electromagnet.
Patent Information
- Application Number
- CN202421936861.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-12
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-08-12
AI Technical Summary
The existing DC solenoids have poor heat dissipation effect after conduction, resulting in changes in resistance and magnetic properties, affecting current stability and may burn.
It adopts a wrap-around heat dissipation structure and a rotatable protective structure to detect temperature through ventilation ducts and temperature sensors, dissipate heat with a fan, and close the heat dissipation window at high temperatures to protect the electromagnet.
Effectively dissipate heat, avoid damage to the electromagnet due to high temperature, ensure current stability and service life, and improve the stability and safety of DC electromagnets.
Smart Images
Figure CN223167306U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electromagnets, in particular to a highly sensitive anti-burning DC electromagnet. Background Art
[0002] An electromagnet is a device that generates electromagnetic force when powered on. A conductive winding matching its power is wound outside the iron core. Such a current-carrying coil has magnetism like a magnet. The installed current of the electromagnet is divided into an AC electromagnet and a DC electromagnet. The presence or absence of the magnetic field of the DC electromagnet can be controlled by turning on and off the current. The structure includes an iron core, an armature mechanism, and an exciting coil. The exciting coil is wound around the iron core. It has a wide range of applications and is closely related to life, such as electromagnetic relays, electromagnetic cranes, maglev trains, electronic door locks, intelligent access gates, electromagnetic flowmeters, etc.
[0003] After the DC electromagnet is turned on, heat will be generated when the iron core and the exciting coil are operating. If the heat is not discharged in time, after a long time of conduction, the overall temperature of the electromagnet will rise. Too high a temperature will cause changes in the resistance and magnetism of the electromagnet, and even cause it to burn out, affecting the stability of the current. However, in the prior art, most of them cannot adjust and cool the iron core and the exciting coil in time, reducing the service life of the DC electromagnet and the accuracy and stability of the current after conduction. Summary of the Utility Model
[0004] The purpose of the utility model is to solve the problem that the existing DC electromagnet has poor heat dissipation effect after conduction in the prior art, and to propose a highly sensitive anti-burning DC electromagnet.
[0005] To achieve the above purpose, the utility model adopts the following technical scheme: It includes an electromagnet coil and an electromagnet frame. A protective shell is sleeved outside the electromagnet frame, and the bottom of the protective shell is fixed to the bottom of the electromagnet frame. The protective shell is provided with a ventilation pipe, and a plurality of air outlet pipes are fixedly penetrated at equal intervals on the bottom surface of the ventilation pipe. The bottom of each air outlet pipe is fixedly penetrated on the top surface of the protective shell. An air inlet pipe is fixedly penetrated on the top surface of the ventilation pipe, and a connection port is fixedly penetrated at one end of the air inlet pipe away from the ventilation pipe. The connection port is externally connected to the air outlet of the fan through an air pipe. Heat dissipation windows are symmetrically opened at the lower part of the protective shell.
[0006] Preferably, the outer diameter of the electromagnet frame is smaller than the inner diameter of the protective shell, and the height of the protective shell is greater than the height of the electromagnet coil and the electromagnet frame.
[0007] Preferably, temperature sensors are arranged on the top surface of the protective shell, the bottom surface of the electromagnet frame, and inside the electromagnet frame to detect the temperature inside and outside the protective shell.
[0008] Preferably, the ventilation pipe is arranged in a ring shape that cooperates with the protective shell. An air inlet that cooperates with the air outlet pipe is provided on the top surface of the protective shell. The air inlet pipe is arranged in an inverted "L" shape.
[0009] Preferably, a protective net is fixed inside each heat dissipation window, and the outer surface of the protective net is flush with the outer surface of the protective shell. Each heat dissipation window and the protective net are arranged in an arc shape that cooperates with the protective shell.
[0010] Preferably, a protective enclosure plate is slidably attached to the outer surface of the protective shell on the sides of the two heat dissipation windows. Connecting plates are fixed to the upper and lower ends of the opposite sides of the two protective enclosure plates. Limiting support blocks are provided on the upper and lower sides of the upper two connecting plates, and the limiting support blocks are fixed on the outer surface of the protective shell.
[0011] Preferably, a lower connecting plate is fixed to the bottom surface of one of the connecting plates, and a number of teeth are equidistantly arranged on the inner side of the lower connecting plate. The side of the teeth is meshed with a gear, and the gear is rotatably connected to the bottom surface of the electromagnet frame through a bearing. A servo motor is provided on the bottom surface inside the electromagnet frame, and the output end of the servo motor is fixed to the top surface of the gear.
[0012] Preferably, each of the protective enclosure plates and the limiting support blocks is arranged in an arc shape that cooperates with the outer surface of the electromagnet coil, and the arc length of the protective enclosure plate is greater than the arc length of the heat dissipation window.
[0013] Preferably, the height of the protective enclosure plate is greater than the height of the heat dissipation window, and the height between the upper and lower connecting plates is greater than the height of the heat dissipation window.
[0014] Preferably, the lower connecting plate is arranged in an arc shape that is the same length as the connecting plate, and the arc length of each connecting plate is greater than the arc length of the protective enclosure plate.
[0015] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:
[0016] 1. In the present utility model, through the surrounding heat dissipation structure, after the electromagnet is energized, heat can be dissipated from the coil, avoiding the resistance and magnetism of the electromagnet from changing due to excessive temperature of the internal iron core and exciting coil. This solves the problem that the existing DC electromagnet has poor heat dissipation effect after being conducted, and can also ensure the stability of the DC electromagnet after being energized, avoiding current instability or even damage of the electromagnet caused by high temperature.
[0017] 2. In the present utility model, through the rotatable protection structure, when it is detected that the external temperature is too high, the heat dissipation window is sealed by rotating the protective enclosure plate, avoiding the direct transfer of external high temperature to the inside of the protective shell, so as to cooperate with the protective shell to better protect the electromagnet. Description of the Drawings
[0018] Figure 1Front elevation schematic diagram of the three-dimensional structure of the DC electromagnet proposed by the present utility model;
[0019] Figure 2 Bottom elevation schematic diagram of the three-dimensional structure of the DC electromagnet proposed by the present utility model;
[0020] Figure 3 Schematic diagram after closing the window of the three-dimensional structure of the DC electromagnet proposed by the present utility model;
[0021] Figure 4 Front elevation schematic diagram of the disassembled structure of the three-dimensional structure of the DC electromagnet proposed by the present utility model.
[0022] Legend: 1. Electromagnet coil; 2. Electromagnet frame; 3. Protective shell; 4. Ventilation pipe; 5. Air outlet pipe; 6. Air inlet pipe; 7. Connection port; 8. Heat dissipation window; 9. Protective net; 10. Temperature sensor; 11. Protective fence; 12. Connecting plate; 13. Limit support block; 14. Lower connecting plate; 15. Teeth; 16. Gear; 17. Servo motor. Detailed implementation manners
[0023] In order to more clearly understand the above objects, features and advantages of the present utility model, the present utility model will be further described below with reference to the drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.
[0024] In the following description, many specific details are set forth in order to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Therefore, the present utility model is not limited by the specific embodiments disclosed in the following specification.
[0025] Embodiment 1
[0026] As Figures 1-4 shown, the present utility model provides a highly sensitive anti-burning DC electromagnet, including an electromagnet coil 1 and an electromagnet frame 2. A protective shell 3 is sleeved outside the electromagnet frame 2, and the bottom of the protective shell 3 is fixed to the bottom of the electromagnet frame 2. The protective shell 3 is provided with a ventilation pipe 4, and a plurality of air outlet pipes 5 are equidistantly and through-fixedly arranged on the bottom surface of the ventilation pipe 4. The bottom of each air outlet pipe 5 is through-fixedly arranged on the top surface of the protective shell 3. The top surface of the ventilation pipe 4 is through-fixedly provided with an air inlet pipe 6, and one end of the air inlet pipe 6 away from the ventilation pipe 4 is through-fixedly provided with a connection port 7. The connection port 7 is externally connected to the air outlet of the fan through a wind pipe. Heat dissipation windows 8 are symmetrically opened at the lower part of the protective shell 3.
[0027] The specific settings and functions of this embodiment are described below: The outer diameter of the electromagnet frame 2 is smaller than the inner diameter of the protective shell 3, and the height of the protective shell 3 is greater than the heights of the electromagnet coil 1 and the electromagnet frame 2, ensuring that air can flow inside the protective shell 3 to facilitate the heat dissipation of the electromagnet frame 2 and the electromagnet coil 1. Temperature sensors 10 are provided on the top surface of the protective shell 3, the bottom surface of the electromagnet frame 2, and inside the electromagnet frame 2 for detecting the temperatures on the inner and outer sides of the protective shell 3. The ventilation pipe 4 is arranged in a ring shape that matches the protective shell 3. An air inlet that matches the air outlet pipe 5 is provided on the top surface of the protective shell 3. The air inlet pipe 6 is arranged in an inverted "L" shape. A protective net 9 is fixed inside each heat dissipation window 8, and the outer surfaces of the protective nets 9 are flush with the outer surface of the protective shell 3 to prevent external dust and debris from entering the inside of the protective shell 3, thereby protecting the internal electromagnet coil 1 and electromagnet frame 2. Each heat dissipation window 8 and the protective net 9 are arranged in an arc shape that matches the protective shell 3.
[0028] Embodiment 2
[0029] As Figures 1-4 shown, on the outer surface of the protective shell 3 on the sides of the two heat dissipation windows 8, there are sliding and fitting protective enclosures 11. On the upper and lower ends of the opposite sides of the two protective enclosures 11, connecting plates 12 are fixed. On the upper and lower sides of the upper two connecting plates 12, limit support blocks 13 are provided, and the limit support blocks 13 are fixed on the outer surface of the protective shell 3. On the bottom surface of one connecting plate 12, a lower connecting plate 14 is fixed, and a number of teeth 15 are equidistantly arranged on the inner side of the lower connecting plate 14. The side of the teeth 15 is meshed with a gear 16, and the gear 16 is rotatably connected to the bottom surface of the electromagnet frame 2 through a bearing. On the inner bottom surface of the electromagnet frame 2, a servo motor 17 is provided, and the output end of the servo motor 17 is fixed on the top surface of the gear 16.
[0030] The overall effect achieved by this embodiment is that each protective enclosure 11 and the limit support block 13 are arranged in an arc shape that matches the outer surface of the electromagnet coil 1, and the arc length of the protective enclosure 11 is greater than the arc length of the heat dissipation window 8, ensuring that after the protective enclosure 11 rotates to align with the heat dissipation window 8, it can protect the heat dissipation window 8 and prevent external heat from entering the inside of the protective shell 3. The height of the protective enclosure 11 is greater than the height of the heat dissipation window 8, and the height between the upper and lower connecting plates 12 is greater than the height of the heat dissipation window 8 to prevent the connecting plates 12 from affecting the normal heat dissipation of the heat dissipation window 8. The lower connecting plate 14 is arranged in an arc shape that is the same length as the connecting plate 12, and the arc length of each connecting plate 12 is greater than the arc length of the protective enclosure 11.
[0031] Usage method and working principle of this device: When the electromagnet is in use, connect the connection port 7 to the air outlet of the fan through the air duct. The air flow is dispersed into the interior of the air outlet duct 5 through the ventilation duct 4 and enters the interior of the protective shell 3 through the air outlet duct 5, so as to dissipate heat from the electromagnet coil 1 and the electromagnet frame 2. The air flow with heat is discharged through the heat dissipation window 8. When the temperature sensor 10 detects that the external temperature is too high, the servo motor 17 operates to drive the gear 16 to rotate. When the gear 16 rotates, it drives the lower connecting plate 14 to rotate through the teeth 15, thereby driving the protective enclosure 11 and the connecting plate 12 to rotate, and rotating the protective enclosure 11 to the outside of the heat dissipation window 8 to seal the heat dissipation window 8. When it is detected that the external temperature is normal, the servo motor 17 operates to drive the gear 16 to rotate in the reverse direction, so that the protective enclosure 11 rotates to be misaligned with the heat dissipation window 8.
[0032] The above are only the preferred embodiments of the present invention, and are not limitations on the present invention in other forms. Any person skilled in the art may use the technical content disclosed above to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims
1. A highly sensitive anti-burning DC electromagnet, comprising an electromagnet coil (1) and an electromagnet frame (2), characterized in that: A protective shell (3) is sleeved outside the electromagnet frame (2), and the bottom of the protective shell (3) is fixed to the bottom of the electromagnet frame (2). The protective shell (3) is provided with a ventilation pipe (4), and a plurality of air outlet pipes (5) are fixedly penetrated at equal intervals on the bottom surface of the ventilation pipe (4). The bottom of each air outlet pipe (5) is fixedly penetrated through the top surface of the protective shell (3). An air inlet pipe (6) is fixedly penetrated through the top surface of the ventilation pipe (4), and a connection port (7) is fixedly penetrated at one end of the air inlet pipe (6) away from the ventilation pipe (4). The connection port (7) is externally connected to the air outlet of a blower through an air pipe. Heat dissipation windows (8) are symmetrically opened at the lower part of the protective shell (3).
2. The highly sensitive anti-burning DC electromagnet according to claim 1, characterized in that: The outer diameter of the electromagnet frame (2) is smaller than the inner diameter of the protective shell (3), and the height of the protective shell (3) is greater than the heights of the electromagnet coil (1) and the electromagnet frame (2).
3. A highly sensitive anti-burning DC electromagnet according to claim 1, characterized in that: Temperature sensors (10) are arranged on the top surface of the protective shell (3), the bottom surface of the electromagnet frame (2), and inside the electromagnet frame (2) for detecting the temperatures inside and outside the protective shell (3).
4. A highly sensitive anti-burning DC electromagnet according to claim 1, characterized in that: The ventilation pipe (4) is arranged in a ring shape matching the protective shell (3). An air inlet matching the air outlet pipe (5) is opened on the top surface of the protective shell (3). The air inlet pipe (6) is arranged in an inverted "L" shape.
5. A highly sensitive anti-burning DC electromagnet according to claim 1, characterized in that: A protective net (9) is fixed inside each heat dissipation window (8), and the outer surface of the protective net (9) is flush with the outer surface of the protective shell (3). Each heat dissipation window (8) and the protective net (9) are arranged in an arc shape matching the protective shell (3).
6. The highly sensitive anti-burning DC electromagnet according to claim 1, characterized in that: Protective enclosures (11) are slidably attached to the outer surface of the protective shell (3) on the sides of the two heat dissipation windows (8). Connecting plates (12) are fixed to the upper and lower ends of the opposite sides of the two protective enclosures (11). Limiting support blocks (13) are arranged on the upper and lower sides of the upper two connecting plates (12), and the limiting support blocks (13) are fixed to the outer surface of the protective shell (3).
7. A highly sensitive anti-burning DC electromagnet according to claim 6, characterized in that: A lower connecting plate (14) is fixed to the bottom surface of one side of the connecting plate (12), and a plurality of teeth (15) are arranged at equal intervals on the inner side of the lower connecting plate (14). The side of the teeth (15) is meshed with a gear (16), and the gear (16) is rotatably connected to the bottom surface of the electromagnet frame (2) through a bearing. A servo motor (17) is arranged on the bottom surface inside the electromagnet frame (2), and the output end of the servo motor (17) is fixed to the top surface of the gear (16).
8. A highly sensitive anti-burning DC electromagnet according to claim 6, characterized in that: Each protective enclosure (11) and the limiting support block (13) are arranged in an arc shape matching the outer surface of the electromagnet coil (1), and the arc length of the protective enclosure (11) is greater than the arc length of the heat dissipation window (8).
9. The high-sensitivity anti-burning DC electromagnet according to claim 6, wherein: The height of the protective enclosure (11) is greater than the height of the heat dissipation window (8), and the height between the upper and lower connecting plates (12) is greater than the height of the heat dissipation window (8).
10. A highly sensitive anti-burning DC electromagnet according to claim 7, characterized in that: The lower connecting plate (14) is arranged in an arc shape having the same length as the connecting plate (12), and the arc length of each connecting plate (12) is greater than the arc length of the protective enclosure (11).