High-reliability frequency converter structure

Abstract

The utility model provides a high-reliability frequency converter structure, and belongs to the technical field of frequency converters. Comprising a bottom plate which is designed to be hollow; the uniform temperature plate is embedded in the bottom plate; the connecting part is arranged in the bottom plate, and the connecting part comprises a first reinforcing rib arranged on the inner wall of one side of the bottom plate and a second reinforcing rib arranged on the inner wall of the other side of the bottom plate; the second reinforcing rib is arranged on the inner wall of the other side of the bottom plate; and the connecting rib is arranged between the first reinforcing rib and the second reinforcing rib. By arranging the first reinforcing ribs, the second reinforcing ribs and the connecting ribs, external loads can be effectively dispersed, stress of all parts can be balanced, stress concentration is avoided, structural deformation and fatigue damage are reduced, and durability and reliability of the whole structure are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of frequency converters, in particular to a high-reliability frequency converter structure. Background Art

[0002] The frequency converter is a power control device that uses frequency conversion technology and microelectronics technology to control the AC motor by changing the working power frequency of the motor. The frequency converter is mainly composed of rectification (AC to DC), filtering, inversion (DC to AC), braking unit, drive unit, detection unit, microprocessor unit, etc.

[0003] At present, when existing inverters are running in industrial environments, they are often subjected to vibration transmission from motors, transmission devices or other mechanical equipment. Long-term vibration can cause internal components to loosen, solder joints to break, circuit boards to crack or connectors to fail, thereby affecting their normal operation and service life. Therefore, the present application provides a high-reliability inverter structure to meet the needs. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a high-reliability frequency converter structure to solve the problem that long-term vibration of the existing frequency converter may cause the internal components to loosen when the frequency converter is running in an industrial environment.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A high-reliability inverter structure comprises: a base plate, which is hollow in design; a temperature-averaging plate, which is embedded in the base plate; a connecting portion, which is arranged in the base plate, and the connecting portion comprises: a first reinforcing rib, which is arranged on the inner wall of one side of the base plate; a second reinforcing rib, which is arranged on the inner wall of the other side of the base plate; and a connecting rib, which is arranged between the first reinforcing rib and the second reinforcing rib.

[0007] Preferably, the method further includes: the spacing between the first reinforcing ribs and the second reinforcing ribs is the same.

[0008] Preferably, the method further includes: the first reinforcing rib and the second reinforcing rib are both wavy.

[0009] Preferably, it also includes: the middle size of the temperature equalizing plate is larger than the sizes on both sides.

[0010] Preferably, it also includes: a plastic shell base, which is arranged on the bottom plate; a DC fan, which is arranged on the bottom plate; a high-density heat sink, which is arranged on the bottom plate; a capacitor plate, which is arranged on the bottom plate; a drive plate, which is arranged in the plastic shell base and located on the top of the capacitor plate; and a fan baffle, which is arranged on the plastic shell base.

[0011] Preferably, it also includes: the capacitor plate, the high-density heat sink and the DC fan are distributed in the front, middle and rear, and are all located in the plastic shell base.

[0012] Preferably, it also includes: a CPU control board, which is arranged on the driving board; an operating keyboard, which is arranged on the driving board; an upper cover, which is arranged on the plastic shell base, and the upper cover is provided with a groove, and the groove matches the operating keyboard; a lower cover, which is arranged on the plastic shell base, and the upper cover and the lower cover are distributed front and back.

[0013] Compared with the prior art, the utility model has at least the following beneficial effects:

[0014] In the above scheme, by providing the first reinforcing rib, the second reinforcing rib and the connecting rib, the external load can be effectively dispersed, the forces on various parts can be balanced, stress concentration can be avoided, structural deformation and fatigue damage can be reduced, and the durability and reliability of the overall structure can be improved.

[0015] By setting up a temperature equalizer, heat can be quickly absorbed and redistributed to avoid local overheating. Heat can be more effectively transferred from the center to the edge, promoting uniform diffusion of thermal energy, and helping to maintain stable operation of the entire inverter under higher loads or ambient temperatures. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable those skilled in the relevant art to make and use the present disclosure.

[0017] Figure 1 This is a schematic diagram of the high reliability inverter structure;

[0018] Figure 2 It is a schematic diagram of the driving board structure;

[0019] Figure 3 Schematic diagram of the temperature equalizing plate structure;

[0020] Figure 4 Schematic diagram of the connection structure.

[0021] In the figure: 1. upper cover; 2. lower cover; 3. operating keyboard; 4. fan baffle; 5. plastic shell base; 6. CPU control board; 7. drive board; 8. capacitor board; 9. DC fan; 10. high-density radiator; 11. bottom plate; 12. temperature plate; 13. connecting part; 131. first reinforcing rib; 132. second reinforcing rib; 133. connecting rib.

[0022] As shown in the figure, in order to clearly implement the structure of the embodiment of the utility model, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the utility model to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the attached claims. DETAILED DESCRIPTION

[0023] The following is a detailed description of a high-reliability inverter structure provided by the utility model in combination with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments. For some known technologies, those skilled in the art may also adopt other alternative methods to implement them; and the accompanying drawings are only for more specific description of the embodiments, and are not intended to specifically limit the utility model.

[0024] like Figure 3 and Figure 4 As shown, an embodiment of the utility model provides a high-reliability inverter structure, including: a base plate 11, the base plate 11 is hollow in design; a temperature equalizing plate 12, embedded in the base plate 11; a connecting portion 13, arranged in the base plate 11, the connecting portion 13 includes: a first reinforcing rib 131, arranged on the inner wall of one side of the base plate 11; a second reinforcing rib 132, arranged on the inner wall of the other side of the base plate 11; a connecting rib 133, arranged between the first reinforcing rib 131 and the second reinforcing rib 132.

[0025] By setting up the temperature equalizing plate 12, as a high-efficiency heat conduction element, the heat generated by the bottom plate 11 and the internal heating elements can be quickly absorbed and evenly distributed through its good thermal conductivity, thereby avoiding local overheating and reducing the impact of thermal stress on electronic components; by setting up reinforcing ribs, the rigidity and bending strength of the bottom plate 11 are increased, especially in the hollow design, it can effectively resist the external pressure and the load caused by the weight of the internal components, preventing the bottom plate 11 from deformation or cracking.

[0026] like Figure 4 As shown, the first reinforcing rib 131 and the second reinforcing rib 132 have the same spacing. Ensuring the uniformity and symmetry of the internal structure of the inverter helps to evenly distribute stress and reduce local stress concentration caused by uneven structure, thereby improving the stability and reliability of the overall structure. At the same time, the design of the same spacing simplifies the manufacturing process, reduces the complexity of the customized mold, facilitates mass production and quality control, and reduces manufacturing costs.

[0027] like Figure 4As shown, it also includes: the first reinforcing rib 131 and the second reinforcing rib 132 are both wavy. By setting the wavy shape, compared with the straight reinforcing ribs, it can provide a larger surface area and stronger structural support, and can greatly improve the lateral and longitudinal rigidity of the bottom plate 11 without significantly increasing the amount of material, reduce deformation, and improve the stability of the overall structure; it can better disperse the external force and internal stress, reduce stress concentration points, thereby avoiding local premature fatigue or fracture, and extending the service life of the inverter; the wavy reinforcing ribs can effectively absorb and dissipate the vibration energy generated by the equipment during operation, reduce the vibration transmission to the electronic components, protect sensitive components from damage, and improve the working reliability of the inverter in a vibration environment.

[0028] like Figure 3 As shown, it also includes: a temperature plate 12, the size of which in the middle is larger than that on both sides, guiding the heat to be transferred more effectively from the middle high-temperature zone to the low-temperature zones on both sides, which helps to disperse the heat energy more quickly to the entire surface of the temperature plate 12, and then be taken away by the heat dissipation system.

[0029] like Figure 1 and Figure 2 As shown, it also includes: a plastic shell base 5, which is arranged on the bottom plate 11; a DC fan 9, which is arranged on the bottom plate 11; a high-density heat sink 10, which is arranged on the bottom plate 11; a capacitor plate 8, which is arranged on the bottom plate 11; a drive board 7, which is arranged in the plastic shell base 5 and is located on the top of the capacitor plate 8; and a fan baffle 4, which is arranged on the plastic shell base 5.

[0030] By arranging an independent air duct on the plastic shell base 5, the air flow can be effectively guided to pass directly through the high-density heat sink 10 and the heating element, thereby accelerating the exchange and discharge of heat, and ensuring that the inverter can maintain good temperature rise control even when running at high load; the air ducts of the heat sources of the main circuit and the control circuit are designed separately, which reduces the mutual interference between the heat sources, and also avoids the electromagnetic interference between the strong and weak electric signals, thereby improving the stability of the control system.

[0031] like Figure 1 and Figure 2 As shown, it also includes: capacitor plate 8, high-density heat sink 10 and DC fan 9 are distributed in front, middle and back, and are all located in the plastic shell base 5. The input and output can be set on the driving board 7 to facilitate the cable to be connected and led out from the bottom, simplifying the wiring work on site and saving installation space.

[0032] like Figure 1 and Figure 2 As shown, it also includes: a CPU control board 6, which is arranged on the driving board 7; an operation keyboard 3, which is arranged on the driving board 7; an upper cover 1, which is arranged on the plastic shell base 5, and a groove is provided on the upper cover 1, and the groove matches the operation keyboard 3; a lower cover 2, which is arranged on the plastic shell base 5, and the upper cover 1 and the lower cover 2 are distributed front and back.

[0033] By setting the upper cover 1 and the lower cover 2, both are in the shape of plastic shells, which have good electrical insulation properties and can effectively isolate the main circuit from the external environment, reduce the risk of leakage, and improve the safety of equipment use; plastic is not easy to rust or corrode, and is particularly suitable for harsh environments such as humidity and salt spray, thereby extending the service life of the inverter; plastic material cost is low and processing is simple, which helps to reduce the overall production cost.

[0034] The positive and negative DC busbars can be arranged on the inverter to overlap and overlap, and the circuit board area is reduced through the overlapping design of the positive and negative DC busbars, making the internal layout more compact and conducive to miniaturization design; the widened copper foil can effectively reduce the resistance, allowing a larger current to pass through, and improving the power handling capacity of the inverter; the overlapping and wide copper foil design helps to reduce the magnetic field interference during the current transmission process, and ensures the stable operation of the circuit.

[0035] According to the technical solution provided by the utility model, when the frequency converter is in use, vibration occurs, which causes the first reinforcing rib 131 to be deformed and squeezed along the second reinforcing rib 132 . After the first reinforcing rib 131 is deformed and squeezed, the second reinforcing rib 132 is deformed through the connecting rib 133 .

[0036] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the above preferred embodiments of the present invention, and those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0037] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A high reliability inverter structure, characterized in that: include: A bottom plate (11), wherein the bottom plate (11) is hollow in design; A temperature-averaging plate (12) is embedded on the bottom plate (11); A connecting portion (13) is arranged in the bottom plate (11), and the connecting portion (13) comprises: A first reinforcing rib (131) is arranged on an inner wall of one side of the bottom plate (11); A second reinforcing rib (132) is arranged on the inner wall of the other side of the bottom plate (11); The connecting rib (133) is arranged between the first reinforcing rib (131) and the second reinforcing rib (132).

2. The high reliability inverter structure according to claim 1, characterized in that: Also includes: The first reinforcing ribs (131) and the second reinforcing ribs (132) are spaced the same distance apart.

3. The high reliability inverter structure according to claim 1, characterized in that: Also includes: The first reinforcing rib (131) and the second reinforcing rib (132) are both wavy in shape.

4. The high reliability inverter structure according to claim 1, characterized in that: Also includes: The temperature equalizing plate (12) has a size in the middle that is larger than sizes on both sides.

5. The high reliability inverter structure according to claim 1, characterized in that: Also includes: A plastic shell base (5) is arranged on the bottom plate (11); A DC fan (9) is arranged on the bottom plate (11); A high-density heat sink (10) is arranged on the bottom plate (11); A capacitor plate (8) is arranged on the bottom plate (11); A driving plate (7) is arranged in the plastic shell base (5) and is located on top of the capacitor plate (8); The fan baffle (4) is arranged on the plastic shell base (5).

6. The high reliability inverter structure according to claim 5, characterized in that: Also includes: The capacitor plate (8), the high-density heat sink (10) and the DC fan (9) are distributed in the front, middle and rear, and are all located inside the plastic shell base (5).

7. The high reliability inverter structure according to claim 5, characterized in that: Also includes: A CPU control board (6) is arranged on the driving board (7); An operating keyboard (3) is arranged on the driving board (7); An upper cover (1) is arranged on the plastic shell base (5), and a groove is provided on the upper cover (1), and the groove matches the operating keyboard (3); The lower cover (2) is arranged on the plastic shell base (5), and the upper cover (1) and the lower cover (2) are distributed front and back.

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