Medium-frequency power supply device

Abstract

The utility model discloses a medium-frequency power supply device, which belongs to the technical field of medium-frequency power supplies and comprises a base plate and an outer shell. The plurality of universal wheels are arranged at the bottom end of the base plate, the outer shell is arranged at the upper end of the base plate, a power supply main body is arranged in the outer shell, a cabinet door is arranged on one side of the outer shell, and a matched positioning frame is arranged in the outer shell; according to the medium-frequency power supply device, through the positioning frame in the medium-frequency power supply device and the plurality of ventilation openings and the plurality of air outlets in the positioning frame, the plurality of air inlets and the plurality of air outlets can be easily opened or closed when the filter plate is mounted or dismounted, so that when the medium-frequency power supply device is not used, the external environment can be effectively isolated; dust and other impurities are prevented from entering the device, the service life of the device is prolonged, electronic element short circuit damage possibly caused by dust accumulation is avoided, and therefore the use safety and stability of the medium-frequency power supply device are greatly improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of medium-frequency power supplies, and particularly relates to a medium-frequency power supply device. Background Art

[0002] A medium-frequency power supply device is a power supply device that converts alternating current into a power supply with a stable medium-frequency output. It can convert a three-phase power-frequency power supply into a single-phase power supply, and has strong adaptability to various loads and a wide application range. The structure of a medium-frequency power supply mainly includes a rectifier transformer, a thyristor rectifier, a freewheeling diode, an inverter, a DC reactor connecting the rectifier and the inverter, as well as corresponding control circuits and protection circuits. The working principle of a medium-frequency power supply is to convert it into direct current through a mains rectification and filtering circuit, and then invert the direct current into an alternating current output of 400 Hz. This conversion enables the medium-frequency power supply to provide stable power supply for equipment, while reducing the weight and size of the power supply. Medium-frequency power supplies are mainly used to provide reliable medium-frequency power for various commercial, industrial, and scientific equipment.

[0003] Chinese Patent Publication No. CN213368434U discloses a medium-frequency power supply device, including a base, a protection cabinet, and a power supply. The power supply is wrapped by a housing, the housing is fixedly arranged in the protection cabinet, a groove matching the protection cabinet is opened on the base, the protection cabinet is arranged in the groove, a conductive block is fixedly connected to the bottom of the power supply, the conductive block penetrates through the housing and the bottom wall of the protection cabinet, and the conductive block is connected to the base. A plurality of ventilation holes are arranged on the upper wall of the protection cabinet. The utility model has a simple structure and is convenient to operate. By means of a fan and a U-shaped heating tube, the medium-frequency power supply is kept at a suitable working temperature, improving the working efficiency of the medium-frequency power supply, capable of discharging moisture from the protection cabinet, increasing the service life of a medium-frequency power supply device, capable of reducing the influence of vibration on a medium-frequency power supply device, and reducing the failure rate.

[0004] In the actual use process of this utility model, heat generated by the medium-frequency power supply device during use is usually effectively dissipated through heat dissipation holes. However, due to the lack of an appropriate protection structure in the existing medium-frequency power supply device, the accumulated dust is likely to enter the medium-frequency power supply device through the heat dissipation holes. The accumulation of dust will not only gradually block the heat dissipation holes, reducing the heat dissipation performance of the medium-frequency power supply device, but may even cause serious problems such as circuit short circuits or component overheating and damage, thus posing a serious threat to the normal operation and use safety of the medium-frequency power supply device. Summary of the Utility Model

[0005] The utility model provides a medium-frequency power supply device to solve the problem that dust from the outside easily enters the medium-frequency power supply device through heat dissipation holes in the prior art.

[0006] To achieve the above object, the utility model provides the following technical solution: A medium-frequency power supply device, comprising:

[0007] A base plate and a housing body;

[0008] A plurality of universal wheels, all arranged at the bottom end of the base plate, the housing body is arranged at the upper end of the base plate, a power supply main body is arranged inside the housing body, a cabinet door is arranged on one side of the housing body, and a matching positioning frame is arranged inside the housing body;

[0009] A heat dissipation fan, arranged on one side inside the housing body, the heat dissipation fan is located above the power supply main body, the housing body is provided with a plurality of air inlets, and both sides of the bottom end of the housing body are provided with a plurality of inclined air outlets;

[0010] Two mounting plates are respectively arranged on both sides of the upper end of the housing body, both of the two mounting plates are arranged in an "L" shape, a filter plate is arranged at the upper end of the housing body, and both ends of the filter plate are respectively located at the bottom ends of the two mounting plates.

[0011] In order to conveniently open or close the plurality of air inlets and the plurality of air outlets, further, the positioning frame is arranged in a "U" shape, a plurality of ventilation openings adapted to the air inlets are arranged through the upper end of the positioning frame, air outlets adapted to the air outlets are arranged on both sides of the bottom end of the positioning frame, the plurality of ventilation openings are respectively located on one side of the plurality of air inlets, and the plurality of air outlets are respectively located on one side of the plurality of air outlets.

[0012] As a preferred embodiment, a resisting rod is arranged on one side of the upper end of the positioning frame, the upper end of the resisting rod penetrates through the housing body and extends to the outside, and abuts against one end of the filter plate.

[0013] As a preferred embodiment, two limiting rods are arranged on one side of the upper end of the housing body, two limiting grooves adapted to the limiting rods are formed on one side of the positioning frame, the two limiting rods are respectively located in the two limiting grooves and are slidably connected with the side walls of the limiting grooves.

[0014] As a preferred embodiment, limiting springs are arranged at the ends of the two limiting rods, and the other ends of the two limiting springs are respectively arranged on one side of the two limiting grooves.

[0015] As a preferred embodiment, fixing rods penetrate through one side of the two mounting plates, one ends of the two fixing rods are both arranged in an inclined manner, and the two fixing rods respectively abut against both sides of one end of the filter plate.

[0016] In order to limit the position of the filter plate, further, fixing rings are arranged at one ends of the two fixing rods, reset springs are sleeved on the outer sides of the two fixing rods, and the reset springs are respectively arranged on one side of the mounting plate and the fixing ring.

[0017] Compared with the prior art, the beneficial effects of the present utility model are:

[0018] 1. The utility model, through the positioning frame in the medium frequency power supply device and the multiple vents and multiple air outlets on the positioning frame, can easily open or close the multiple air inlets and exhaust ports when installing or removing the filter plate, so that the medium frequency power supply device can be effectively isolated from the external environment when not in use, and prevent dust and other impurities from entering the device, which not only extends the service life of the device, but also avoids short circuit damage to electronic components due to dust accumulation, thereby greatly improving the safety and stability of the use of the medium frequency power supply device;

[0019] 2. The utility model, by arranging a movable fixing rod on one side of the two mounting plates, can not only stably install the filter plate, but also quickly and conveniently disassemble it, which not only greatly saves the time and manpower required for installing and disassembling the filter plate, but also significantly improves the convenience of using the medium frequency power supply device, making the maintenance and management of the medium frequency power supply device easier and more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the main appearance of the structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the front cross-section of the structure of the utility model;

[0022] Figure 3 It is a side cross-sectional schematic diagram of the structure of the utility model;

[0023] Figure 4 It is a cross-sectional schematic diagram of the limit groove of the structure of the utility model;

[0024] Figure 5 It is a cross-sectional schematic diagram of the mounting plate of the utility model structure.

[0025] In the figure: 1. base plate; 2. outer shell; 3. universal wheel; 4. power supply body; 5. cabinet door; 6. positioning frame; 7. cooling fan; 8. air inlet; 9. air outlet; 10. mounting plate; 11. filter plate; 12. vent; 13. air outlet; 14. resistance rod; 15. limit rod; 16. limit spring; 17. fixing rod; 18. fixing ring; 19. reset spring. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0027] Embodiment 1:

[0028] See also Figures 1-5 The utility model provides a medium frequency power supply device, comprising:

[0029] A base plate 1 and a housing 2;

[0030] A plurality of universal wheels 3 are all arranged at the bottom end of the base plate 1, the housing 2 is arranged at the upper end of the base plate 1, a power supply main body 4 is arranged inside the housing 2, a cabinet door 5 is arranged on one side of the housing 2, and a matching positioning frame 6 is arranged inside the housing 2;

[0031] A cooling fan 7 is arranged on one side inside the housing 2, the cooling fan 7 is located above the power supply main body 4, the housing 2 is provided with a plurality of air inlets 8, and both sides of the bottom end of the housing 2 are provided with a plurality of inclined air outlets 9;

[0032] Two mounting plates 10 are respectively arranged on both sides of the upper end of the housing 2, both of the two mounting plates 10 are arranged in an "L" shape, a filter plate 11 is arranged at the upper end of the housing 2, and both ends of the filter plate 11 are respectively located at the bottom ends of the two mounting plates 10.

[0033] Specifically, as Figure 1 、 Figure 2 、 Figure 3 and Figure 4 shown, the positioning frame 6 is arranged in a "U" shape, a plurality of ventilation openings 12 adapted to the air inlets 8 are arranged through the upper end of the positioning frame 6, air outlets 13 adapted to the air outlets 9 are arranged on both sides of the bottom end of the positioning frame 6, a plurality of ventilation openings 12 are respectively located on one side of a plurality of air inlets 8, a plurality of air outlets 13 are respectively located on one side of a plurality of air outlets 9, by moving the positioning frame 6 to drive the plurality of ventilation openings 12 and the plurality of air outlets 13 to move, so that they are respectively aligned or misaligned with the plurality of air inlets 8 and the plurality of air outlets 9, the heat dissipation holes of the intermediate frequency power supply device can be opened or closed, and without affecting the use of the intermediate frequency power supply device, it can also prevent external dust from entering the intermediate frequency power supply device.

[0034] Specifically, as Figure 2 shown, a resisting rod 14 is arranged on one side of the upper end of the positioning frame 6, the upper end of the resisting rod 14 penetrates through the housing 2 and extends to the outside, and abuts against one end of the filter plate 11.

[0035] Through its design, when installing the filter plate 11, the positioning frame 6 can be pushed to move through the resisting rod 14, so that the plurality of ventilation openings 12, the plurality of air outlets 13 and the plurality of air inlets 8, the plurality of air outlets 9 can be aligned or misaligned.

[0036] Specifically, as Figure 4 shown, two limiting rods 15 are arranged on one side of the upper end of the housing 2, two limiting grooves adapted to the limiting rods 15 are formed on one side of the positioning frame 6, the two limiting rods 15 are respectively located in the two limiting grooves and are slidably connected with the side walls of the limiting grooves, the cooperation of the two limiting rods 15 and the two limiting grooves can limit the moving position of the positioning frame 6 and prevent its position from shifting during movement.

[0037] Specifically, as Figure 4 shown, limit springs 16 are provided at the ends of both limiting rods 15. The other ends of the two limit springs 16 are respectively arranged on one side of the two limiting grooves. After the filter plate 11 is removed, the two limit springs 16 can drive the positioning frame 6 to return to its original position, so as to close multiple air inlets 8 and multiple air outlets 9.

[0038] Refer to Figures 1-5 . When the intermediate frequency power supply device is used for a long time, a large amount of heat will be generated inside it, and the generated heat needs to be dissipated. First, the filter plate 11 needs to be installed between the two mounting plates 10. When the filter plate 11 is installed, it will push the contact rod 14 to move to one side. The contact rod 14 will drive the positioning frame 6 to move. The movement of the positioning frame 6 will align multiple ventilation openings 12 with multiple air outlet openings 13, and align multiple air inlets 8 with multiple air outlets 9. Then, by starting the cooling fan 7, the heat generated by the use of the power supply main body 4 can be dissipated, ensuring the safety and stability of the use of the intermediate frequency power supply device.

[0039] Embodiment 2:

[0040] Please refer to Figures 1-5 . The present utility model provides an intermediate frequency power supply device, including:

[0041] A base plate 1 and a housing 2;

[0042] A plurality of universal wheels 3 are all arranged at the bottom end of the base plate 1. The housing 2 is arranged at the upper end of the base plate 1. A power supply main body 4 is arranged inside the housing 2. A cabinet door 5 is arranged on one side of the housing 2. A positioning frame 6 adapted thereto is arranged inside the housing 2;

[0043] A cooling fan 7 is arranged on one side inside the housing 2. The cooling fan 7 is located above the power supply main body 4. The housing 2 is provided with a plurality of air inlets 8. A plurality of inclined air outlets 9 are arranged on both sides of the bottom end of the housing 2;

[0044] Two mounting plates 10 are respectively arranged on both sides of the upper end of the housing 2. Both of the two mounting plates 10 are arranged in an "L" shape. A filter plate 11 is arranged at the upper end of the housing 2. Both ends of the filter plate 11 are respectively located at the bottom ends of the two mounting plates 10.

[0045] Specifically, as Figure 5 shown, fixing rods 17 penetrate through one side of both of the two mounting plates 10. One ends of the two fixing rods 17 are both arranged in an inclined manner. The two fixing rods 17 respectively abut against both sides of one end of the filter plate 11.

[0046] Through its design, by the fixing rods 17 with inclined ends, not only can the filter plate 11 be conveniently installed, but also its position can be limited after installation to prevent its position from shifting during use.

[0047] Specifically, as Figure 5 shown, fixed rings 18 are provided at one ends of two fixing rods 17. Return springs 19 are sleeved outside the two fixing rods 17. The return springs 19 are respectively arranged on one side of the mounting plate 10 and the fixed ring 18. The return springs 19 can limit the positions of the fixing rods 17, so that the two fixing rods 17 can stably limit the position of the filter plate 11.

[0048] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A medium frequency power supply device, characterized in that: include: A base plate (1) and an outer shell (2); A plurality of universal wheels (3) are arranged at the bottom end of the base plate (1); the outer shell (2) is arranged at the upper end of the base plate (1); a power source body (4) is arranged inside the outer shell (2); a cabinet door (5) is arranged on one side of the outer shell (2); and a matching positioning frame (6) is arranged inside the outer shell (2); A cooling fan (7) is arranged on one side of the interior of the outer shell (2), the cooling fan (7) is located at the upper end of the power supply body (4), the outer shell (2) is provided with a plurality of air inlets (8), and a plurality of inclined air outlets (9) are provided on both sides of the bottom end of the outer shell (2); Two mounting plates (10) are respectively arranged on both sides of the upper end of the outer shell (2); the two mounting plates (10) are both arranged in an "L" shape; a filter plate (11) is provided at the upper end of the outer shell (2); two ends of the filter plate (11) are respectively located at the bottom ends of the two mounting plates (10).

2. A medium frequency power supply device according to claim 1, characterized in that: The positioning frame (6) is arranged in a "U" shape, and a plurality of ventilation holes (12) adapted to the air inlet (8) are provided through the upper end of the positioning frame (6), and air outlets (13) adapted to the air outlet (9) are provided on both sides of the bottom end of the positioning frame (6), and the plurality of ventilation holes (12) are respectively located on one side of the plurality of air inlet holes (8), and the plurality of air outlet holes (13) are respectively located on one side of the plurality of air outlet holes (9).

3. A medium frequency power supply device according to claim 1, characterized in that: A resisting rod (14) is provided on one side of the upper end of the positioning frame (6); the upper end of the resisting rod (14) penetrates the outer shell (2) and extends to the outside, and resists against one end of the filter plate (11).

4. A medium frequency power supply device according to claim 1, characterized in that: Two limiting rods (15) are provided on one side of the upper end of the outer shell (2), and two limiting grooves matched with the limiting rods (15) are provided on one side of the positioning frame (6). The two limiting rods (15) are respectively located in the two limiting grooves and are slidably connected to the side walls of the limiting grooves.

5. A medium frequency power supply device according to claim 4, characterized in that: The ends of the two limiting rods (15) are each provided with a limiting spring (16), and the other ends of the two limiting springs (16) are respectively arranged on one side of the two limiting grooves.

6. A medium frequency power supply device according to claim 1, characterized in that: A fixing rod (17) is provided through one side of each of the two mounting plates (10), one end of each of the two fixing rods (17) is arranged in an inclined manner, and the two fixing rods (17) are respectively pressed against two sides of one end of the filter plate (11).

7. A medium frequency power supply device according to claim 6, characterized in that: A fixing ring (18) is provided at one end of the two fixing rods (17), and a return spring (19) is sleeved on the outer side of the two fixing rods (17). The return spring (19) is respectively arranged on one side of the mounting plate (10) and the fixing ring (18).

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