Three-phase power supply with over-temperature protection

Abstract

The utility model belongs to the field of three-phase power supplies, and particularly relates to a three-phase power supply with over-temperature protection, which comprises a bottom plate, one side of the bottom plate is provided with an electrical mechanism, the other side of the bottom plate is provided with an installation mechanism, the top of one side of the bottom plate close to the electrical mechanism is provided with a cylinder, and the bottom of the cylinder is provided with a wide-mouth cover. An air inlet fan is installed in the wide-mouth cover, a temperature sensor is arranged in the top of the cylinder, the temperature sensor is fixed to the inner wall of the cylinder through a supporting frame, a box cover is arranged on the side, close to the electrical mechanism, of the bottom plate, and a warning lamp is installed on the outer wall of the box cover. Through the operation of the air inlet fan, hot air near the electrical mechanism can be pumped into the cylinder and intensively acts on the temperature sensor, so that the temperature sensor can accurately monitor the temperature around the electrical mechanism, heat generated by the electrical mechanism can be quickly discharged, and the electrical mechanism is prevented from being damaged due to over-high temperature.

Description

Technical Field

[0001] This utility model relates to the field of three-phase power supply, specifically a three-phase power supply with over-temperature protection. Background Technology

[0002] A three-phase power supply consists of three alternating current potentials with the same frequency, equal amplitude, and phases differing by 120°. This type of power supply is widely used in power systems, especially in power generation, transmission, distribution, and high-power electrical equipment. Three-phase power supplies can provide stable current and are suitable for various industrial equipment, such as electric motors, which typically require a three-phase power supply to operate normally. A search revealed a utility model patent with authorization announcement number CN221709641U, which discloses a three-phase frequency converter power supply with over-temperature protection alarm. This relates to the field of three-phase frequency converter power supply technology, and includes a three-phase frequency converter power supply body and an over-temperature alarm mechanism. An inverter is fixedly installed inside the three-phase frequency converter power supply body. The over-temperature alarm mechanism includes a temperature sensor, a control chip, a temperature alarm indicator light, an audible alarm, and a temperature safety indicator light. The temperature sensor is fixedly installed on the right side of the inverter, and the control chip is fixedly installed on the right side of the temperature sensor. This three-phase frequency converter with over-temperature protection alarm uses a temperature sensor installed next to the inverter to monitor the temperature changes of the equipment in real time and transmit the detected temperature to the control chip. The control chip has a pre-set temperature threshold. Once the temperature detected by the temperature sensor exceeds the temperature threshold, it will trigger the temperature alarm indicator light to light up and the sound alarm to sound through the wire.

[0003] However, existing three-phase power supplies have numerous internal components, each with potentially different center temperatures. This makes temperature monitoring cumbersome. Using only one temperature monitor may introduce errors, while adding too many increases manufacturing costs. Furthermore, the fixed bolt positions of existing three-phase power supplies make them incompatible with all support frames, or require pre-prepared mounting brackets, further complicating installation. Therefore, improvements are needed. Utility Model Content

[0004] The purpose of this invention is to provide a three-phase power supply with over-temperature protection, which solves the problem of inaccurate and erroneous temperature monitoring in existing three-phase power supplies, and also solves the problem of inconvenient installation of three-phase power supplies.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a three-phase power supply with over-temperature protection, comprising a base plate, an electrical mechanism on one side of the base plate, an installation mechanism on the other side of the base plate, a cylinder mounted on the top of the base plate near the electrical mechanism, a wide-faced shield mounted on the bottom of the cylinder, an air intake fan mounted inside the wide-faced shield, a temperature sensor mounted inside the top of the cylinder, the temperature sensor being fixed to the inner wall of the cylinder via a support frame, a cover mounted on the side of the base plate near the electrical mechanism, a warning light mounted on the outer wall of the cover, and the warning light being connected to the electrical mechanism via a wire.

[0006] Preferably, a baffle is vertically installed on the edge of the base plate near the lid, the baffle corresponding to the inner side of the lid and fixed with bolts. The bolt fixing of the baffle to the lid ensures the stability of the lid on the base plate and facilitates the assembly and disassembly of the lid.

[0007] Preferably, the electrical mechanism includes a motherboard, on which a main control chip, a three-phase voltage regulator, a transformer, an electrolytic capacitor, a surge protection chip, a filter, a safety capacitor, and a connector are mounted. The three-phase voltage regulator and the connector are fixedly mounted through a baffle. The temperature sensor is connected to the main control chip via a wire. This electrical mechanism constitutes the entire power supply device.

[0008] Preferably, the motherboard is also equipped with an alarm. The alarm can be triggered to alert staff.

[0009] Preferably, the top of the baffle has a receiving groove corresponding to the cylinder, the three-phase voltage regulator, and the connector, while the bottom of the cover has a slot corresponding to the cylinder, the three-phase voltage regulator, and the connector. The receiving groove and the slot facilitate the placement of the cover on the base plate without affecting the extension of the cylinder, the three-phase voltage regulator, and the connector outside the cover for electrical connection or use.

[0010] Preferably, the side of the enclosure cover has ventilation holes that penetrate the baffle. These ventilation holes, in conjunction with an intake fan, ensure airflow within the enclosure cover, improving the heat dissipation capacity of the electrical components.

[0011] Preferably, the mounting mechanism includes a strip plate with an "L"-shaped bend at the end. The end of the strip plate is fixed to the base plate. Each end of the strip plate has a mounting plate 1, and each mounting plate 1 has a circular groove with a locking bolt threaded into it. A sliding groove is formed in the middle of the mounting plate 1, allowing it to slide on the strip plate. Each end of the mounting plate 1 has a mounting hole 1. A mounting plate 2 is hinged to the top of the mounting plate 1, and each end of the mounting plate 2 has a mounting hole 2. By flipping the mounting plate 2 on the mounting plate 1, the base plate can be directly fixed to the mounting frame, or the mounting plate 2 and the mounting plate 1 can be clamped and fixed to the mounting frame. Furthermore, by sliding the mounting plate 1 on the strip plate, the distance between the two mounting plates 1 can be adjusted, improving the adaptability of the base plate during installation.

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

[0013] 1. This utility model uses the operation of the intake fan to draw hot air from the vicinity of the electrical mechanism into the cylinder and concentrate it on the temperature sensor. This ensures that the temperature sensor can accurately monitor the temperature around the electrical mechanism and can also quickly dissipate the heat generated by the electrical mechanism to prevent the electrical mechanism from overheating and being damaged.

[0014] 2. This utility model provides multiple installation methods for the base plate by sliding the first mounting plate on the strip plate and flipping the second mounting plate on the first mounting plate, thereby improving the installation adaptability of the three-phase power supply and providing convenience for its installation. Attached Figure Description

[0015] Figure 1 This is a three-dimensional view of the overall structure of this utility model;

[0016] Figure 2 This is an exploded view of the present invention;

[0017] Figure 3 This is a schematic diagram of the electrical mechanism structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the installation mechanism structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the top structure of the cylinder of this utility model.

[0020] In the diagram: 1. Base plate; 2. Baffle; 3. Electrical mechanism; 4. Mounting mechanism; 5. Cylinder; 6. Wide-face mask; 7. Air intake fan; 8. Temperature sensor; 9. Support frame; 10. Main board; 11. Main control chip; 12. Transformer; 13. Lightning protection chip; 14. Filter; 15. Safety capacitor; 16. Electrolytic capacitor; 17. Connector; 18. Three-phase voltage regulator; 19. Ventilation hole; 20. Cover; 21. Strip plate; 22. Mounting plate one; 23. Slide groove; 24. Circular groove; 25. Locking bolt; 26. Mounting hole one; 27. Mounting plate two; 28. Mounting hole two; 29. ​​Alarm; 30. Warning light. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 2 , Figure 3 A three-phase power supply with over-temperature protection includes a base plate 1. An electrical mechanism 3 is provided on one side of the base plate 1. The electrical mechanism 3 includes a main board 10. The main board 10 is provided with a main control chip 11, a three-phase voltage regulator 18, a transformer 12, an electrolytic capacitor 16, a surge protection chip 13, a filter 14, a safety capacitor 15, and a connector 17. The three-phase voltage regulator 18 and the connector 17 are fixedly installed through the baffle 2. Through the electrical mechanism 3, they form the entire power supply device.

[0023] Please see Figure 1 , Figure 4On the other side of the base plate 1, an installation mechanism 4 is provided. The installation mechanism 4 includes a strip plate 21 with its ends bent into an "L" shape. The ends of the strip plate 21 are fixed to the base plate 1. Mounting plates 22 are provided at both ends of the strip plate 21. Circular grooves 24 are formed at the ends of the mounting plates 22, and locking bolts 25 are threaded into the circular grooves 24. A sliding groove 23 is formed in the middle of the mounting plate 22, allowing the mounting plate 22 to slide on the strip plate 21. Both ends of the mounting plate 22 are... The mounting plate 1 is provided with a mounting hole 26. The top of the mounting plate 1 22 is hinged to a mounting plate 27. Both ends of the mounting plate 27 are provided with mounting holes 28. By flipping the mounting plate 27 on the mounting plate 1 22, the base plate 1 can be directly fixed on the mounting frame, or the mounting plate 27 and the mounting plate 1 22 can clamp and fix the mounting frame. Furthermore, by sliding the mounting plate 1 22 on the strip plate 21, the distance between the two mounting plates 1 22 can be adjusted, improving the adaptability of the base plate 1 during installation.

[0024] Please see Figure 2 , Figure 3 , Figure 5 A cylinder 5 is mounted on the top of the base plate 1 near the electrical mechanism 3. A wide-face mask 6 is mounted on the bottom of the cylinder 5, and an air intake fan 7 is installed inside the wide-face mask 6. A temperature sensor 8 is installed inside the top of the cylinder 5, and the temperature sensor 8 is fixed to the inner wall of the cylinder 5 by a support frame 9. The temperature sensor 8 is connected to the main control chip 11 by a wire. A box cover 20 is provided on the side of the base plate 1 near the electrical mechanism 3. A baffle 2 is vertically installed on the edge of the base plate 1 near the box cover 20. The baffle 2 corresponds to the inner side of the box cover 20 and is fixed by bolts. The bolt fixing of the baffle 2 to the box cover 20 ensures the stability of the box cover 20 on the base plate 1 and facilitates the installation and removal of the box cover 20 on the base plate 1. A warning light 30 is installed on the outer wall of the box cover 20, and the warning light 30 is connected to the electrical mechanism 3 by a wire. The side of the cover 20 is provided with ventilation holes 19, which penetrate the baffle 2. The ventilation holes 19, together with the air intake fan 7, ensure airflow within the cover 20 and improve the heat dissipation capacity of the electrical mechanism 3. The main board 10 is also provided with an alarm 29, which can sound an alarm to remind the staff. The top of the baffle 2 is provided with a receiving groove corresponding to the cylinder 5, the three-phase voltage regulator 18, and the connector 17, while the bottom of the cover 20 is provided with a slot corresponding to the cylinder 5, the three-phase voltage regulator 18, and the connector 17. The receiving groove and the slot facilitate the placement of the cover 20 on the base plate 1 without affecting the extension of the cylinder 5, the three-phase voltage regulator 18, and the connector 17 to the outside of the cover 20 for electrical connection or use.

[0025] The specific implementation process of this utility model is as follows: When installing the base plate 1, mounting plate 1 22 and mounting plate 27 can be combined, and mounting plate 1 22 can be moved to take bolts through the mounting holes to fix the base plate 1 on the mounting frame. Alternatively, mounting plate 1 22 can be placed on the mounting frame, and then mounting plate 27 can be flipped over to clamp the mounting frame and fixed with bolts. After installation, the air intake fan 7 can draw air from around the electrical mechanism 3 into the cylinder 5, and the temperature sensor 8 will act on it to monitor the temperature of the electrical mechanism 3. In this way, the internal temperature of the three-phase power supply can be monitored. If the temperature of the electrical mechanism 3 is too high, the warning light 30 and the alarm 29 will be activated to issue an alarm to remind the staff.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A three-phase power supply with over-temperature protection, comprising a base plate (1), characterized in that: An electrical mechanism (3) is provided on one side of the base plate (1), and an installation mechanism (4) is provided on the other side of the base plate (1). A cylinder (5) is installed on the top of the side of the base plate (1) near the electrical mechanism (3). A wide-face mask (6) is installed at the bottom of the cylinder (5). An air intake fan (7) is installed inside the wide-face mask (6). A temperature sensor (8) is provided inside the top of the cylinder (5). The temperature sensor (8) is fixed to the inner wall of the cylinder (5) by a support frame (9). A box cover (20) is provided on the side of the base plate (1) near the electrical mechanism (3). A warning light (30) is installed on the outer wall of the box cover (20). The warning light (30) is connected to the electrical mechanism (3) by a wire.

2. A three-phase power supply with over-temperature protection according to claim 1, characterized in that: A baffle (2) is vertically installed on the edge of the bottom plate (1) near the box cover (20). The baffle (2) corresponds to the inner side of the box cover (20) and is fixed with bolts.

3. A three-phase power supply with over-temperature protection according to claim 2, characterized in that: The electrical mechanism (3) includes a main board (10), on which a main control chip (11), a three-phase voltage regulator (18), a transformer (12), an electrolytic capacitor (16), a surge protection chip (13), a filter (14), a safety capacitor (15), and a connector (17) are provided. The three-phase voltage regulator (18) and the connector (17) are fixedly installed through the baffle (2). The temperature sensor (8) is connected to the main control chip (11) through a wire.

4. A three-phase power supply with over-temperature protection according to claim 3, characterized in that: An alarm (29) is also installed on the motherboard (10).

5. A three-phase power supply with over-temperature protection according to claim 3, characterized in that: The top of the baffle (2) is provided with a receiving groove corresponding to the cylinder (5), the three-phase voltage regulator (18), and the connector (17), while the bottom of the box cover (20) is provided with a slot corresponding to the cylinder (5), the three-phase voltage regulator (18), and the connector (17).

6. A three-phase power supply with over-temperature protection according to claim 2, characterized in that: The side of the box cover (20) is provided with a ventilation hole (19), which is set through the baffle (2).

7. A three-phase power supply with over-temperature protection according to claim 1, characterized in that: The mounting mechanism (4) includes a strip plate (21) with an "L"-shaped end. The end of the strip plate (21) is fixed to the base plate (1). Both ends of the strip plate (21) are provided with mounting plate one (22). The ends of the mounting plate one (22) are provided with circular grooves (24), and locking bolts (25) are threaded into the circular grooves (24). The middle part of the mounting plate one (22) is provided with a sliding groove (23) so that the mounting plate one (22) can be slidably mounted on the strip plate (21). Both ends of the mounting plate one (22) are provided with mounting hole one (26). The top of the mounting plate one (22) is hinged with mounting plate two (27). Both ends of the mounting plate two (27) are provided with mounting hole two (28).

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