A frequency converter device with heat dissipation structure

Abstract

The present invention relates to the field of power electronics technology, and in particular to a frequency converter device with a heat dissipation structure, which solves the problem in the prior art that the frequency converter has low heat dissipation efficiency when running at high loads, which easily leads to overheating and damage of the device. A frequency converter device with a heat dissipation structure includes a frequency converter, a circuit mainboard installed inside the frequency converter, and a backplane arranged on one side of the frequency converter, wherein a heat dissipation fan is installed at the bottom of the frequency converter, and a plurality of heat exhaust slots are opened at the top; a plurality of dual-state ventilation components are arranged on one side of the circuit mainboard, wherein one end of the dual-state ventilation component is arranged as a heat-conducting end and contacts the circuit mainboard, and the other end is arranged as a dynamic ventilation end and passes through the backplane. The present invention realizes efficient heat dissipation of the internal heat of the frequency converter through the cooperation of the heat-conducting end and the dynamic ventilation end of the dual-state ventilation component.

Description

Technical Field

[0001] The invention relates to the technical field of power electronics, and in particular to a frequency converter device with a heat dissipation structure. Background Art

[0002] As a key device in the electrical transmission system, the inverter plays a vital role in industrial automation, motor control and other fields. It controls the speed of the motor by changing the frequency of the power supply, thereby achieving efficient and precise control of the motor. However, during the operation of the inverter, a large amount of heat will be generated due to the high-frequency switching of internal electronic components such as rectifiers and inverters. If this heat cannot be dissipated in time, it will not only cause the internal temperature of the inverter to rise, but also affect the performance and stability of the electronic components, and may even cause equipment failure or damage. Therefore, effective heat dissipation design is crucial to ensure the long-term stable operation of the inverter.

[0003] The Chinese patent with the authorization announcement number CN217336275U discloses a heat dissipation mechanism for a frequency converter, which realizes the simultaneous blowing and heat dissipation treatment of the top and sides of the frequency converter through the top heat dissipation holes, side heat dissipation holes, ventilation holes and multiple heat dissipation fans provided on the outside of the frequency converter housing, and the heat dissipation effect is improved to a certain extent. However, in the actual application process, this heat dissipation structure gradually exposed a series of obvious technical problems.

[0004] Since hot air has the characteristic of rising, and the above-mentioned heat dissipation mechanism performs air blowing at the top of the inverter, the hot air generated by the electronic components inside the inverter is easily shrouded around the electronic components again after being blown away, forming a heat cycle, thereby greatly reducing the heat dissipation efficiency. In addition, when the inverter is not in operation, the multiple groups of heat dissipation holes opened around it to improve the air intake efficiency become channels for dust to enter. Dust and impurities in the air will take the opportunity to invade the interior of the inverter and attach to the electronic components. Long-term accumulation will seriously affect the heat dissipation effect and service life of the electronic components.

[0005] Therefore, in view of the low heat dissipation efficiency and insufficient dustproof performance in the existing inverter heat dissipation technology, we urgently need an inverter device with a heat dissipation structure. This device should be able to effectively solve the problems of hot air circulation and dust intrusion, achieve more efficient and reliable heat dissipation effects, and provide strong guarantees for the long-term stable operation of the inverter. Summary of the invention

[0006] The purpose of the present invention is to provide a frequency converter device with a heat dissipation structure to solve the following technical problems: Since hot air has the characteristic of rising, and the above-mentioned heat dissipation mechanism performs a blowing process on the top of the frequency converter, the hot air generated by the electronic components inside the frequency converter is easily shrouded around the electronic components again after being blown away, forming a heat cycle, thereby greatly reducing the heat dissipation efficiency. In addition, when the frequency converter is not in operation, the multiple groups of heat dissipation holes opened around it in order to improve the air intake efficiency become channels for dust to enter. Dust and impurities in the air will take the opportunity to invade the interior of the frequency converter and adhere to the electronic components. Long-term accumulation will seriously affect the heat dissipation effect and working life of the electronic components.

[0007] The purpose of the present invention can be achieved through the following technical solutions:

[0008] A frequency converter device with a heat dissipation structure comprises: a frequency converter, a circuit mainboard installed inside the frequency converter, and a backplane arranged on one side of the frequency converter, wherein a heat dissipation fan is installed at the bottom of the frequency converter, and a plurality of heat dissipation slots are opened at the top;

[0009] A plurality of dual-state ventilation components are arranged on one side of the circuit main board, one end of the dual-state ventilation component is arranged as a heat conduction end and contacts the circuit main board, and the other end is arranged as a dynamic ventilation end and penetrates the back plate;

[0010] A conversion wind bin for connecting to a cooling fan is provided at the bottom of the inner cavity of the frequency converter. An air outlet slot is provided at the top of the conversion wind bin, and heat exhaust pipes are connected on both sides. The top end of the heat exhaust pipe passes through the top of the frequency converter, and one side is connected to the heat conduction end of several adjacent dual-state ventilation components.

[0011] As a further solution of the present invention: the dual-state ventilation assembly includes a mounting cylinder and a heat-conducting cylinder;

[0012] The heat-conducting tube is connected to one end of the mounting tube, and the mounting tube is in communication with the interior of the heat-conducting tube;

[0013] A piston plate is movably mounted inside the heat-conducting cylinder. One side of the piston plate is elastically connected to the inner wall of the heat-conducting cylinder via a plurality of memory metal springs, and the other end is connected to a fixed circular plate via a reset spring. The fixed circular plate is fixedly connected to the inside of the mounting cylinder. One side of the piston plate and the inner wall of the heat-conducting cylinder form a filling cavity, and the inside of the filling cavity is filled with phase change material.

[0014] As a further solution of the present invention: a plurality of heat absorbing grooves for accommodating phase change materials are evenly formed on an inner wall of the heat-conducting tube, and the length of the reset spring is greater than the length of the memory metal spring.

[0015] As a further solution of the present invention: a plurality of ventilation holes are opened on one side of the back panel, an air inlet tube slidingly matched with the ventilation hole is provided at one end of the mounting tube, the fixed circular plate is connected to the air inlet tube through a memory metal spring, a plurality of air inlet grooves are opened on the outer ring of the air inlet tube, a sealing plate is fixedly connected to one end of the air inlet tube, and the size of the sealing plate is larger than the size of the ventilation hole.

[0016] As a further solution of the present invention: a sealing ring is connected to one side of the sealing plate, a guide cylinder is connected to one side of the fixed circular plate, and a guide column is slidably connected inside the guide cylinder with one end connected to the side wall of the air inlet cylinder.

[0017] As a further solution of the present invention: a dustproof plate is detachably connected to the interior of each air inlet slot, and each mounting tube is connected to the inner wall of the inverter via a bracket.

[0018] As a further solution of the present invention: the bottom end of the heat exhaust pipe is connected to the interior of the conversion wind bin through a connecting pipe, and the heat exhaust pipe is made of a heat insulating material.

[0019] As a further solution of the present invention: an air inlet for connecting to a cooling fan is provided at the bottom of the conversion air bin, and a filter plate is detachably connected to the interior of the conversion air bin.

[0020] As a further solution of the present invention: a heat conduction component is provided at the bottom of each heat conduction tube, and the heat conduction component includes a supporting plate and a heat sink, the supporting plate is connected to the bottom of the heat conduction tube, the heat sink is arranged inside the heat exhaust pipe, and the supporting plate is connected to the heat sink through a connecting frame.

[0021] As a further solution of the present invention: the heat-conducting tube, the supporting plate, the connecting frame and the heat sink are all made of heat-conducting materials, the supporting plate is in an arc shape, and the diameter of the supporting plate is the same as the radius of the heat-conducting tube.

[0022] Beneficial effects of the present invention:

[0023] (1) In the present invention, efficient heat dissipation of the internal heat of the inverter is achieved through the cooperation of the heat conducting end and the dynamic ventilation end of the dual-state ventilation component. The heat conducting end is attached to the circuit mainboard, ensuring the rapid conduction and dissipation of heat, effectively reducing the operating temperature of the electronic components and improving their performance and stability. The dynamic ventilation end is intelligently opened or closed according to the changes in the internal temperature of the inverter, which not only ensures that external cold air can be introduced for efficient heat dissipation at high temperatures, but also avoids the intrusion and accumulation of dust at normal temperatures, thereby extending the service life of the inverter;

[0024] (2) In the present invention, the design of the conversion air bin and the heat exhaust pipe enables the airflow generated by the cooling fan to be fully utilized, which not only ensures the heat dissipation demand of the inverter cavity, but also guides the airflow to the dual-state ventilation component through the heat exhaust pipe, thereby achieving accurate heat dissipation of key heat-generating components. This not only improves the heat dissipation efficiency, but also reduces unnecessary energy consumption, reflecting the environmental protection concept of energy saving and consumption reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] Figure 1 It is a structural schematic diagram of the frequency converter and the backplane of the present invention;

[0027] Figure 2 It is a schematic diagram of the structure of the heat exhaust groove of the present invention;

[0028] Figure 3 It is a structural schematic diagram of the heat dissipation fan of the present invention;

[0029] Figure 4 It is a schematic diagram of the structure of the vent and the bracket of the present invention;

[0030] Figure 5 It is a schematic diagram of the structure of the heat exhaust pipe of the present invention;

[0031] Figure 6 It is a structural schematic diagram of the conversion wind bin of the present invention;

[0032] Figure 7 is a schematic diagram of the structure of the dual-state ventilation assembly of the present invention;

[0033] Figure 8 It is a structural schematic diagram of the fixed circular plate and the mounting cylinder of the present invention;

[0034] Fig. 9 It is a structural schematic diagram of the heat-conducting tube and the heat-absorbing groove of the present invention.

[0035] In the figure: 1. inverter; 2. back plate; 3. heat exhaust groove; 4. dual-state ventilation component; 5. cooling fan; 6. conversion air bin; 7. circuit board; 8. vent; 9. heat conduction component; 10. sealing plate; 11. bracket; 401. air inlet tube; 402. fixed circular plate; 403. mounting tube; 404. piston plate; 405. heat conduction tube; 406. sealing ring; 407. air inlet groove; 408. dustproof plate; 409. guide column; 410. guide tube; 411. memory metal spring 1; 412. reset spring; 413. memory metal spring 2; 414. heat absorption groove; 601. heat exhaust pipe; 602. connecting pipe; 603. air outlet groove; 901. supporting plate; 902. connecting frame; 903. heat sink. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] Embodiment 1

[0038] See also Figure 1 As shown, a frequency converter device with a heat dissipation structure of the present embodiment includes: a frequency converter 1, a circuit main board 7 installed inside the frequency converter 1, and a back plate 2 arranged on one side of the frequency converter 1. The back plate 2 is arranged on one side of the frequency converter 1 to provide installation and support for the dual-state ventilation component. A heat dissipation fan 5 is installed at the bottom of the frequency converter 1. When the heat dissipation fan 5 is started, an airflow is generated to blow out the hot air inside the frequency converter 1, and the hot air is guided to the outside through the heat dissipation groove 3 and the heat dissipation pipe 601 to achieve effective heat dissipation. A plurality of heat dissipation grooves 3 are opened on the top as auxiliary heat dissipation channels. The heat dissipation grooves 3 allow hot air to rise and be discharged from the outside of the frequency converter 1, and work together with the heat dissipation fan 5 and the heat dissipation pipe 601 to improve the heat dissipation efficiency.

[0039] like Figure 2 As shown, a plurality of dual-state ventilation components 4 are arranged on one side of the circuit main board 7, one end of the dual-state ventilation component 4 is arranged as a heat-conducting end, which contacts the circuit main board 7, absorbs and conducts the heat generated by the electronic components; the other end is arranged as a dynamic ventilation end, which penetrates the back plate 2, and is intelligently opened or closed according to the change of the internal temperature of the inverter 1, and the ventilation volume is adjusted, which not only ensures the heat dissipation efficiency but also avoids the intrusion of dust, one end of the dual-state ventilation component 4 is arranged as a heat-conducting end and contacts the circuit main board 7, and the other end is arranged as a dynamic ventilation end and penetrates the back plate 2;

[0040] like Figure 3 and Figure 6 As shown, a conversion wind bin 6 for connecting with the cooling fan 5 is provided at the bottom of the inner cavity of the inverter 1. The conversion wind bin 6 divides the airflow generated by the cooling fan 5 into two parts: one part is directly blown upward through the air outlet slot 603 to take away part of the heat; the other part is transported to the vicinity of the heat conduction end of the dual-state ventilation component 4 through the heat exhaust pipe 601 to achieve precise heat dissipation. An air outlet slot 603 is provided at the top of the conversion wind bin 6, and heat exhaust pipes 601 are connected on both sides. The top end of the heat exhaust pipe 601 passes through the top of the inverter 1, and one side is connected to the heat conduction ends of several adjacent dual-state ventilation components 4.

[0041] Working principle of the present invention: During the operation of the frequency converter 1, the electronic components on the internal circuit main board 7, such as rectifiers, inverters, etc., will generate a large amount of heat due to the high-frequency switching state. This heat energy is first absorbed by the heat-conducting end of the dual-state ventilation component 4, and the heat-conducting end is attached to the circuit main board 7 to ensure the rapid conduction of heat. At the same time, the cooling fan 5 at the bottom of the frequency converter 1 is started to generate a strong airflow, which is orderly guided into the conversion air chamber 6.

[0042] In the conversion air bin 6, the airflow is divided into two parts: one part is blown directly upward through the air outlet slot 603 to help take away some of the heat in the inner cavity of the inverter; the other part is transported to the vicinity of the heat conduction end of the dual-state ventilation component 4 through the heat exhaust pipe 601 to further accelerate the dissipation of heat.

[0043] The dual-state ventilation component 4 not only has a heat conduction function, but its dynamic ventilation end can also achieve the function of regulating ventilation. When the temperature inside the inverter 1 rises, the dynamic ventilation end will extend out of the back plate 2, allowing the external cold air to smoothly enter the inverter 1 and form convection with the internal hot air, thereby greatly improving the heat dissipation efficiency. On the contrary, when the internal temperature of the inverter 1 remains normal, the dynamic ventilation end will automatically close, effectively blocking the intrusion of external dust and impurities, avoiding the accumulation of dust inside the inverter, and ensuring the cleanliness of electronic components and long-term stable operation.

[0044] In addition, the heat dissipation groove 3 opened on the top of the inverter 1 also serves as an auxiliary heat dissipation channel to help the hot air rise and be discharged, and works together with the heat conduction end and the dynamic ventilation end of the dual-state ventilation component 4 to jointly build an efficient and intelligent heat dissipation system.

[0045] Embodiment 2

[0046] A frequency converter device with a heat dissipation structure in this embodiment, such as Figure 7-9 As shown, the dual-state ventilation assembly 4 includes a mounting cylinder 403 and a heat-conducting cylinder 405;

[0047] The heat-conducting tube 405 is connected to one end of the mounting tube 403, and the mounting tube 403 is communicated with the interior of the heat-conducting tube 405;

[0048] The interior of the heat-conducting tube 405 is movably equipped with a piston plate 404, one side of the piston plate 404 is elastically connected to the inner wall of the heat-conducting tube 405 via a plurality of memory metal springs 413, and the other end is connected to a fixed circular plate 402 via a reset spring 412, and the fixed circular plate 402 is fixedly connected to the inside of the mounting tube 403, one side of the piston plate 404 and the inner wall of the heat-conducting tube 405 form a filling cavity, and the inside of the filling cavity is filled with a phase change material, which is paraffin. Paraffin has a high latent heat value and can change from solid to liquid during the heat absorption process, thereby absorbing a large amount of heat. Specifically, solid paraffin is filled into the filling cavity. When the temperature inside the inverter 1 rises, the heat-conducting cylinder 405 absorbs the heat of the circuit main board 7, and the heat is transferred to the paraffin inside. At this time, the paraffin absorbs a large amount of heat and is converted from solid to liquid. At the same time, the memory metal spring 413 is deformed by heat, pushing the piston plate 404 to move away from the circuit main board 7. The movement of the piston plate 404 expands the space inside the heat-conducting cylinder 405, so that the liquid paraffin can be spread flat inside the heat-conducting cylinder 405 for subsequent heat conduction. Heat and heat dissipation, when the internal temperature of the inverter 1 returns to normal, the memory metal spring 2 413 returns to its original state, and with the assistance of the reset spring 412, the piston plate 404 will be driven to quickly return to its original position. When the piston plate 404 returns to its original position, it will squeeze the air inside the heat-conducting tube 405, and the paraffin will be converted from liquid to solid at this time. Through the squeezing of the piston plate 404, the paraffin in the solid state can be accumulated at the end of the heat-conducting tube 405, which is closer to the circuit main board 7, so as to be fully prepared to absorb heat next time.

[0049] Furthermore, if Figure 7 As shown, a plurality of heat absorbing grooves 414 for accommodating phase change materials are evenly formed on an inner wall of the heat conducting cylinder 405, and the length of the reset spring 412 is greater than the length of the memory metal spring 413. Specifically, the phase change material changes from solid to liquid after absorbing heat, absorbing a large amount of heat, and releases heat and solidifies when the temperature drops. At the same time, it is squeezed into the heat absorbing groove 414 by the piston plate 404, and the heat exchange area is increased in cooperation with the heat absorbing groove 414. The effect of improving the heat conduction efficiency and balancing the temperature fluctuation inside the inverter is achieved.

[0050] Furthermore, if Figure 8As shown, one side of the back plate 2 is provided with a plurality of vents 8, one end of the mounting tube 403 is provided with an air inlet tube 401 which slides with the vent 8, the fixed circular plate 402 is connected to the air inlet tube 401 through a memory metal spring 1 411, the outer ring of the air inlet tube 401 is provided with a plurality of air inlet grooves 407, one end of the air inlet tube 401 is fixedly connected with a sealing plate 10, the size of the sealing plate 10 is larger than the size of the vent 8, the memory metal spring 1 411 and the memory metal spring 2 413 are made of memory alloy materials such as nickel-titanium alloy, specifically, when the internal temperature of the inverter 1 rises, the memory metal spring 1 411 will be deformed by heat and restore to its original shape and stretch, driving the air inlet tube 401 to move in the vent 8 so that the air inlet groove 407 contacts with the external air, so that the external air enters into the interior of the inverter 1 through the air inlet groove 407, the memory metal spring 1 411 adjusts its length according to the temperature change, drives the air inlet tube 401 to slide in the vent 8, and ensures the sealing and opening of the vent.

[0051] Furthermore, if Figure 8 As shown, a sealing ring 406 is connected to one side of the sealing plate 10, a guide cylinder 410 is connected to one side of the fixed circular plate 402, and a guide column 409 is slidably connected inside the guide cylinder 410, one end of which is connected to the side wall of the air inlet cylinder 401. Specifically, when the air inlet cylinder 401 is retracted, the sealing plate 10 and the sealing ring 406 are tightly fitted to the vent 8, effectively preventing dust and impurities from entering. This design achieves the effect of enhancing the dustproof effect and ensuring the cleanliness of the internal components of the inverter.

[0052] Furthermore, each air inlet slot 407 is detachably connected to a dustproof plate 408, and each mounting cylinder 403 is connected to the inner wall of the inverter 1 through the bracket 11. Specifically, the guide cylinder 410 and the guide column 409 ensure the stability of the extension and retraction of the air inlet cylinder 401, and the dustproof plate 408 can be regularly disassembled and cleaned to keep the air inlet unobstructed. This design achieves the effect of enhancing ventilation stability and facilitating maintenance and cleaning.

[0053] In this embodiment, a frequency converter device with a heat dissipation structure, when the internal temperature of the frequency converter 1 rises: when the frequency converter 1 is in operation, the electronic components on the internal circuit main board 7 will continue to generate a large amount of heat. This heat is first quickly absorbed by the heat-conducting end of the dual-state ventilation component 4, that is, the heat-conducting tube 405. The interior of the heat-conducting tube 405 is filled with a phase change material, paraffin, which can change from solid to liquid after absorbing heat, absorbing and storing a large amount of heat energy. At the same time, the heat absorption groove 414 at one end of the heat-conducting tube 405 increases the heat exchange area, further improving the heat conduction efficiency.

[0054] When the temperature inside the inverter 1 rises, the memory metal spring 1 411 and the memory metal spring 2 413 are deformed by heat, return to their original shape and stretch. The stretching of the memory metal spring 1 411 drives the air inlet tube 401 to slide inside the vent 8, so that the air inlet slot 407 contacts the outside air, allowing the outside cold air to enter the inverter 1, forming convection and enhancing heat dissipation. At this time, the dustproof plate 408 can prevent dust from entering with the air, and the guide tube 410 and the guide column 409 ensure the stability of the extension and retraction of the air inlet tube 401. At the same time, the stretching of the memory metal spring 2 413 pushes the piston plate 404 to move away from the circuit main board 7, expands the internal space of the heat-conducting tube 405, and spreads the liquid paraffin inside the heat-conducting tube 405, which is convenient for subsequent heat conduction and heat dissipation.

[0055] At the same time, the cooling fan 5 starts, generating a strong airflow, which is guided into the conversion air bin 6 in an orderly manner. In the conversion air bin 6, the airflow is divided into two parts: one part blows directly upward through the air outlet slot 603, taking away part of the heat in the inner cavity of the inverter; the other part enters the heat exhaust pipe 601 through the connecting pipe 602. The heat exhaust pipe 601 is made of heat-insulating material to reduce heat loss, and transports the airflow to the vicinity of the heat-conducting end of the dual-state ventilation component 4 to further accelerate heat dissipation. The heat sink 903 in the heat-conducting component 9 discharges heat in the heat exhaust pipe 601. The support plate 901 and the connecting frame 902 are both made of heat-conducting materials to ensure uniform heat transfer.

[0056] Embodiment 3

[0057] A frequency converter device with a heat dissipation structure in this embodiment, such as Figure 4 and Figure 6 As shown, the bottom end of the heat exhaust pipe 601 is connected to the interior of the conversion air bin 6 through the connecting pipe 602. The heat exhaust pipe 601 is made of heat insulating material. Specifically, the connecting pipe 602 ensures that the airflow smoothly enters the heat exhaust pipe 601 from the conversion air bin 6. The heat insulating material reduces the heat loss to the interior of the inverter 1 during the heat exhaust process, reduces the impact on the internal temperature of the inverter 1, and allows more heat to be discharged.

[0058] Furthermore, an air inlet for connecting to the cooling fan 5 is provided at the bottom of the conversion air bin 6, and a filter plate is detachably connected to the interior of the conversion air bin 6. Specifically, the filter plate effectively blocks dust and impurities from entering the conversion air bin 6, protecting the internal components of the inverter, thereby enhancing the air intake filtering effect and extending the service life of the equipment.

[0059] Furthermore, a heat conducting component 9 is provided at the bottom of each heat conducting tube 405, and the heat conducting component 9 includes a supporting plate 901 and a heat sink 903. The supporting plate 901 is connected to the bottom of the heat conducting tube 405, and the heat sink 903 is arranged inside the heat exhaust pipe 601. The supporting plate 901 is connected to the heat sink 903 through a connecting frame 902. Specifically, the heat conducting material quickly transfers the heat absorbed by the heat conducting tube 405 to the heat sink 903, and discharges the heat to the inside of the heat exhaust pipe 601 through the heat exhaust pipe 601.

[0060] Furthermore, the heat-conducting tube 405, the supporting plate 901, the connecting frame 902 and the heat sink 903 are all made of heat-conducting materials, and the heat-conducting materials are copper or aluminum. The supporting plate 901 is in an arc shape, and the diameter of the supporting plate 901 is the same as the radius of the heat-conducting tube 405. Specifically, the arc-shaped supporting plate 901 increases the contact area with the heat-conducting tube 405, and the heat-conducting material ensures that the heat is evenly transferred to the heat sink 903. The effect of optimizing heat distribution and improving heat dissipation uniformity is achieved.

[0061] In the inverter device with a heat dissipation structure of this embodiment, when the internal temperature of the inverter 1 returns to normal, the memory metal spring 1 411 and the memory metal spring 2 413 cool down, return to their original state and shorten. The memory metal spring 1 411 drives the air inlet tube 401 to retract, and the sealing plate 10 and the sealing ring 406 fit tightly against the vent 8, effectively preventing dust and impurities from entering. With the assistance of the reset spring 412, the memory metal spring 2 413 drives the piston plate 404 to quickly return to its original position, squeezing the air inside the heat-conducting tube 405, and at the same time causing the solid paraffin to accumulate at the end of the heat-conducting tube 405, ready to absorb heat next time.

[0062] In addition, the heat dissipation slot 3 on the top of the inverter 1 serves as an auxiliary heat dissipation channel to help the hot air rise and be discharged. The filter plate is detachably connected inside the conversion air bin 6 to effectively block dust and impurities from entering and protect the internal components of the inverter.

[0063] The above is a detailed description of an embodiment of the present invention, but the content is only a preferred embodiment of the present invention and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A frequency converter device with a heat dissipation structure, characterized in that: include: A frequency converter (1), a circuit mainboard (7) installed inside the frequency converter (1), and a backplane (2) arranged on one side of the frequency converter (1), wherein a cooling fan (5) is installed at the bottom of the frequency converter (1), and a plurality of heat dissipation slots (3) are provided at the top; A plurality of dual-state ventilation components (4) are arranged on one side of the circuit main board (7), one end of the dual-state ventilation component (4) being arranged as a heat-conducting end and in contact with the circuit main board (7), and the other end being arranged as a dynamic ventilation end and penetrating the back plate (2); The bottom of the inner cavity of the frequency converter (1) is provided with a conversion air bin (6) for communicating with a cooling fan (5); the top of the conversion air bin (6) is provided with an air outlet slot (603), and both sides are connected with a heat exhaust pipe (601); the top end of the heat exhaust pipe (601) passes through the top of the frequency converter (1), and one side is connected to the heat conduction end of a plurality of adjacent dual-state ventilation components (4); The dual-state ventilation assembly (4) comprises a mounting cylinder (403) and a heat-conducting cylinder (405); The heat-conducting tube (405) is connected to one end of the mounting tube (403), and the mounting tube (403) is in communication with the interior of the heat-conducting tube (405); A piston plate (404) is movably mounted inside the heat-conducting cylinder (405); one side of the piston plate (404) is elastically connected to the inner wall of the heat-conducting cylinder (405) via a plurality of memory metal springs (413); the other end is connected to a fixed circular plate (402) via a return spring (412); the fixed circular plate (402) is fixedly connected to the inside of the mounting cylinder (403); one side of the piston plate (404) and the inner wall of the heat-conducting cylinder (405) form a filling cavity; the inside of the filling cavity is filled with a phase change material.

2. The frequency converter device with a heat dissipation structure according to claim 1, characterized in that: An inner wall of the heat-conducting tube (405) is evenly provided with a plurality of heat-absorbing grooves (414) for accommodating phase-change materials, and the length of the return spring (412) is greater than the length of the second memory metal spring (413).

3. The frequency converter device with a heat dissipation structure according to claim 1, characterized in that: A plurality of ventilation holes (8) are provided on one side of the back plate (2); an air inlet tube (401) slidably matched with the ventilation hole (8) is provided at one end of the mounting tube (403); the fixed circular plate (402) is connected to the air inlet tube (401) via a memory metal spring (411); a plurality of air inlet grooves (407) are provided on the outer ring of the air inlet tube (401); a sealing plate (10) is fixedly connected to one end of the air inlet tube (401); and the size of the sealing plate (10) is larger than the size of the ventilation hole (8).

4. The frequency converter device with a heat dissipation structure according to claim 3, characterized in that: A sealing ring (406) is connected to one side of the sealing plate (10), a guide cylinder (410) is connected to one side of the fixed circular plate (402), and a guide column (409) having one end connected to the side wall of the air inlet cylinder (401) is slidably connected inside the guide cylinder (410).

5. The frequency converter device with a heat dissipation structure according to claim 4, characterized in that: A dustproof plate (408) is detachably connected to the interior of each air inlet slot (407), and each mounting tube (403) is connected to the inner wall of the frequency converter (1) via a bracket (11).

6. The frequency converter device with a heat dissipation structure according to claim 1, characterized in that: The bottom end of the heat exhaust pipe (601) is connected to the interior of the conversion air bin (6) via a connecting pipe (602), and the heat exhaust pipe (601) is made of a heat-insulating material.

7. The frequency converter device with a heat dissipation structure according to claim 6, characterized in that: An air inlet for connecting to a cooling fan (5) is provided at the bottom of the conversion air bin (6), and a filter plate is detachably connected to the interior of the conversion air bin (6).

8. The frequency converter device with a heat dissipation structure according to claim 1, characterized in that: A heat conduction component (9) is provided at the bottom of each heat conduction tube (405), and the heat conduction component (9) comprises a support plate (901) and a heat sink (903), wherein the support plate (901) is connected to the bottom of the heat conduction tube (405), and the heat sink (903) is provided inside the heat exhaust pipe (601), and the support plate (901) is connected to the heat sink (903) via a connecting frame (902).

9. The frequency converter device with a heat dissipation structure according to claim 8, characterized in that: The heat-conducting tube (405), the supporting plate (901), the connecting frame (902) and the heat sink (903) are all made of heat-conducting materials; the supporting plate (901) is in an arc shape, and the diameter of the supporting plate (901) is the same as the radius of the heat-conducting tube (405).

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