Safety frequency converter

Abstract

The invention relates to the technical field of frequency converters, and mainly relates to a safe frequency converter. Comprising a frequency converter main body, the frequency converter main body is fixedly connected with a fixing shell, the frequency converter main body is fixedly connected with uniformly-distributed heat dissipation fins, the heat dissipation fins are located between the fixing shell and the frequency converter main body, the fixing shell is slidably connected with two sliding frames, the sliding frames are fixedly connected with a plurality of sponge layers, and the sponge layers are fixedly connected with the frequency converter main body. The sponge layer is used for dissipating heat of the adjacent heat dissipation fins, the fixing shell is provided with a plurality of heat dissipation fans, and a temperature sensor used for detecting the temperature of the frequency converter body is arranged in the frequency converter body. Water is injected into the sponge layer, the wet sponge layer is attached to the cooling fins and combined with air flow, composite cooling is conducted on the cooling fins, the cooling rate of heat in the frequency converter body is increased, the heat in the frequency converter body is dissipated in time, and the safety of electronic elements in the frequency converter body is ensured.

Description

Technical Field

[0001] The present invention belongs to the technical field of frequency converters, and particularly relates to a safe type frequency converter. Background Art

[0002] A frequency converter is a power electronic device widely used in modern industrial and civil fields. It is mainly used to adjust the running speed and output power of an AC motor. By changing the frequency and voltage of the input power supply, it realizes precise control of the motor speed, so as to achieve the purposes of energy conservation and consumption reduction, improving the operation efficiency and automation level of equipment. At present, frequency converters have been widely used in many fields such as industrial automation production lines, municipal facilities, agricultural irrigation, and energy systems, and have become an indispensable key component in modern electrical control systems.

[0003] However, during the actual operation process, the frequency converter often faces a complex and changeable working environment. On the one hand, its working state will frequently start and stop or be in a full-load running state for a long time; on the other hand, affected by factors such as the increase in the external environmental temperature or the narrow installation space, the temperature of the internal components of the frequency converter will rise rapidly, resulting in overheating of the equipment or even failure. Therefore, good heat dissipation design is crucial for ensuring the stable operation of the frequency converter.

[0004] Limited by the installation space, in most cases, the frequency converter only adopts an air-cooling heat dissipation method with a simple structure and convenient maintenance. However, the specific heat capacity of air is low, resulting in limited heat dissipation by air-cooling per unit time. It is difficult to effectively discharge heat in a timely manner under high-temperature or high-load working conditions. Long-term operation is likely to cause a decline in the performance and shortening of the lifespan of the frequency converter, and even lead to equipment damage, affecting the continuity and reliability of the system. Therefore, it is urgent to optimize the heat dissipation scheme of outdoor frequency converters to improve their stability and safety in complex environments. Summary of the Invention

[0005] In order to overcome the disadvantages mentioned in the above background art, the present invention provides a safe type frequency converter.

[0006] The technical implementation scheme of the present invention is: a safe type frequency converter, including a frequency converter main body. The frequency converter main body is fixedly connected with a fixed shell. The frequency converter main body is fixedly connected with evenly distributed heat dissipation fins. The heat dissipation fins are located between the fixed shell and the frequency converter main body. Two sliding frames are slidably connected to the fixed shell. The sliding frames are fixedly connected with a plurality of sponge layers. The sponge layers are used for dissipating heat from adjacent heat dissipation fins. The fixed shell is provided with a plurality of heat dissipation fans. A temperature sensor for detecting its own temperature is arranged inside the frequency converter main body. A water-cooling component for storing water and injecting water into the sponge layers is arranged on the frequency converter main body.

[0007] As a further preferred solution, the direction of the gas flow driven by the cooling fan in the fixed shell is from top to bottom, so as to make the bottom of the sponge layer closely fit with the adjacent heat dissipation fins.

[0008] As a further preferred solution, the water cooling component includes a water storage shell, the water storage shell is fixedly connected to the main body of the frequency converter, the water storage shell is fixedly connected and communicated with a water inlet shell, a liquid level sensor for detecting the internal water content is arranged in the water storage shell, the water storage shell is fixedly connected and communicated with a main pipe, the main pipe penetrates through the fixed shell, dispersion pipes are arranged in all the sponge layers, the dispersion pipes are fixedly connected and communicated with the main pipe, and a control component for regularly injecting water into all the sponge layers is arranged on the main body of the frequency converter.

[0009] As a further preferred solution, the connection part between the water inlet shell and the water storage shell is of a bent structure, so as to leave water in the water inlet shell and form a seal for the water in the water storage shell.

[0010] As a further preferred solution, the control component includes a valve, the valve is arranged on the main pipe, the valve is used to control the flow state of the water in the main pipe, a first gear is fixedly connected to the valve rod of the valve, a rack is slidably connected to the water storage shell and meshes with the first gear, and a pushing component for driving the rack to move is arranged on the rack.

[0011] As a further preferred solution, the pushing component includes a first elastic member, the first elastic member is arranged between the water storage shell and the rack, a magnetic block is fixedly connected to the rack, an electromagnet is fixedly connected to the water storage shell, and the electromagnet is used to drive the rack to move through the magnetic block.

[0012] As a further preferred solution, a separation component for separating the sponge layer and the heat dissipation fins is further included, the separation component is arranged on the two sliding frames, the separation component includes a second gear, the second gear is rotatably connected to the water storage shell, first tooth portions are arranged on both sliding frames, the second gear meshes with both first tooth portions, a second elastic member is arranged between the second gear and the water storage shell, and a delay component for delaying the reset of the sliding frame is arranged on the water storage shell.

[0013] As a further preferred solution, a trigger block is fixedly connected to any one of the sliding frames, and the rack drives the sliding frame to move through the trigger block.

[0014] As a further preferred scheme, the delay component includes a first card block, the first card block is fixedly connected to the sliding frame, the water storage shell is slidably connected to a second card block, the second card block is used to limit the first card block, and the fixed shell is provided with a timing unlocking component for separating the first card block and the second card block.

[0015] As a further preferred scheme, the timing unlocking component includes a timer module, the timer module is fixedly connected to the water storage shell, the input end of the timer module is fixedly connected to the third gear, the sliding frame is provided with a second tooth portion meshing with the third gear, and the output end of the timer module is used to drive the second card block to move.

[0016] Compared with the prior art, the present invention has the following advantages: 1. By injecting water into the sponge layer, the present invention makes the moist sponge layer fit the heat dissipation fins and combine with the wind flow, thereby performing composite heat dissipation on the heat dissipation fins, improving the heat dissipation rate of the heat in the inverter body, dissipating the heat in the inverter body in time, and ensuring the safety of the electronic components in the inverter body.

[0017] 2. By injecting water into the sponge layer intermittently, when the water in the sponge layer is completely consumed, water is injected into the sponge layer again to dissipate heat for the heat dissipation fins, thereby improving the utilization rate of the water in the water storage shell and avoiding the waste of water resources in the water storage shell.

[0018] 3. Collect external rainwater through the water inlet shell, and the connection between the water storage shell and the water inlet shell is a bent structure, so that water will be retained at the bottom of the water inlet shell, so that the water retained at the bottom of the water inlet shell forms a liquid seal with the water in the water storage shell, which can reduce the probability of water evaporation in the water storage shell.

[0019] 4. After the overheating state of the inverter body is relieved by the combined heat dissipation of water cooling and air cooling, it is converted into ordinary air cooling, so that the two sliding frames move in the opposite direction, driving all the sponge layers to separate from the adjacent heat dissipation fins, so that the airflow directly contacts the heat dissipation fins, thereby improving the heat dissipation rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic cross-sectional view of the three-dimensional structure of the fixed shell of the present invention; Figure 3 It is a three-dimensional structural schematic diagram of the fixed shell and the sliding frame of the present invention; Figure 4 It is a schematic cross-sectional view of the three-dimensional structure of the water storage shell and the water inlet shell of the present invention; Figure 5 It is a schematic diagram of the three-dimensional structure of the rack frame and the second gear of the present invention; Figure 6Schematic three-dimensional structure diagram of the main pipe and the dispersion pipe of the present invention; Figure 7 Schematic three-dimensional structure diagram of the first gear and the rack of the present invention; Figure 8 Schematic three-dimensional structure diagram of the second gear and the first tooth part of the present invention; Figure 9 Schematic three-dimensional structure diagram of the first clamping block and the second clamping block of the present invention.

[0021] Explanation of reference numerals: 1 - Inverter main body, 2 - Fixed shell, 3 - Heat dissipation fins, 4 - Sliding frame, 5 - Sponge layer, 6 - Heat dissipation fan, 201 - Water storage shell, 202 - Water inlet shell, 203 - Main pipe, 204 - Dispersion pipe, 301 - Valve, 302 - First gear, 303 - Rack, 304 - First elastic member, 305 - Magnet, 306 - Electromagnet, 401 - Second gear, 402 - First tooth part, 403 - Second elastic member, 404 - Trigger block, 405 - First clamping block, 406 - Second clamping block, 501 - Timer module, 502 - Third gear, 503 - Second tooth part. Detailed implementation manners

[0022] The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which the currently preferred embodiments of the present invention are shown. However, the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided for thoroughness and completeness and to fully convey the scope of the present invention to those skilled in the art.

[0023] However, in actual operation, the inverter is often in a frequent start-stop or full-load working condition. Coupled with factors such as high ambient temperature and limited installation space, it is easy to cause the temperature of internal components to rise rapidly, leading to overheating faults. Limited by space and cost, outdoor inverters mostly use simple air-cooled heat dissipation. However, the traditional air-cooled heat dissipation has low efficiency and slow response, and it is difficult to discharge heat in time. Long-term operation is likely to cause performance degradation, shortened lifespan, and even damage to the equipment, affecting the system stability.

[0024] Embodiment 1 This embodiment discloses a safety-type inverter for improving its heat dissipation rate under overheating conditions.

[0025] As Figures 1-3As shown in the figure, it includes an inverter main body 1. The inverter main body 1 is fixedly connected with a fixed housing 2. The fixed housing 2 is located at the rear side of the inverter main body 1. The rear side of the inverter main body 1 is fixedly connected with evenly distributed heat dissipation fins 3. The heat dissipation fins 3 are mainly used to increase the heat dissipation area of the inverter main body 1, so that the heat generated by the inverter main body 1 is transferred to the external environment. The heat dissipation fins 3 are located between the fixed housing 2 and the inverter main body 1. Two sliding frames 4 are slidably connected to the top inside the fixed housing 2. The sliding frames 4 are fixedly connected with a number of sponge layers 5. The sponge layers 5 are used to dissipate heat from the adjacent heat dissipation fins 3. The connection point of the sponge layer 5 and the sliding frame 4 is located on the upper side of the fixed housing 2. A number of heat dissipation fans 6 are arranged at the bottom of the fixed housing 2. The heat dissipation fans 6 extract the gas inside the fixed housing 2 and transport it outwards. The flow direction of the gas driven by the heat dissipation fans 6 inside the fixed housing 2 is from top to bottom, which is used to make the bottom of the sponge layer 5 closely fit with the adjacent heat dissipation fins 3. A temperature sensor for detecting its own temperature is arranged inside the inverter main body 1. A water cooling component for storing water and injecting water into the sponge layer 5 is arranged on the inverter main body 1.

[0026] The above settings can achieve that the water in the sponge layer 5 and the air flow formed by the heat dissipation fans 6 will quickly dissipate heat from the heat dissipation fins 3. At the same time, the air flow formed by the heat dissipation fans 6 will evaporate the water in the sponge layer 5, enhancing the heat dissipation effect.

[0027] Such as Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 and Figure 7As shown in the figure, the water-cooling component includes a water storage shell 201, which is fixedly connected to the top of the frequency converter main body 1. The front side of the water storage shell 201 is fixedly connected and communicated with a water inlet shell 202, which is used to inject water into the water storage shell 201. The water can come from the injection of the staff and the collection of external rainwater. The top of the water inlet shell 202 is in a flared shape to increase the collection area of rainwater. At the same time, a filter screen (not shown in the figure) for blocking external impurities is provided at the top of the water inlet shell 202. A liquid level sensor for detecting the internal water content is arranged in the water storage shell 201. The bottom of the water storage shell 201 is fixedly connected and communicated with a main pipe 203. The main pipe 203 penetrates through the fixed shell 2. A dispersion pipe 204 is arranged in all the sponge layers 5. The dispersion pipe 204 is a flexible pipe, and a length allowance is left for the dispersion pipe 204 between the sponge layer 5 and the main pipe 203 to adapt to the position change of the sponge layer 5. The dispersion pipe 204 is provided with evenly distributed water outlet holes, and the dispersion pipe 204 is used to inject the water in it into the sponge layer 5 so that the sponge layer 5 adsorbs water. The dispersion pipe 204 is fixedly connected and communicated with the main pipe 203. A control component for regularly injecting water into all the sponge layers 5 is arranged on the frequency converter main body 1. The connection part between the water inlet shell 202 and the water storage shell 201 is in a bent structure, forming a communicating vessel structure, so that water remains at the bottom of the water inlet shell 202, forming a liquid seal for the water in the water storage shell 201 to reduce the probability of water volatilization in the water storage shell 201.

[0028] The above settings can achieve that the external water can enter the water storage shell 201 along the water inlet shell 202, store the water in the water storage shell 201, and the water in the water storage shell 201 can flow along the main pipe 203 at the bottom, so that the water in the water storage shell 201 enters all the dispersion pipes 204, and finally all the sponge layers 5 are wetted, and the water in the sponge layer 5 dissipates heat from the frequency converter main body 1. When the water enters the water storage shell 201 along the water inlet shell 202, water will remain at the bottom of the water inlet shell 202, forming a liquid seal for the water in the water storage shell 201 and reducing the probability of water volatilization in the water storage shell 201.

[0029] As Figures 5-7As shown, the control component includes a valve 301. The valve 301 is located inside the fixed housing 2. The valve 301 is arranged on the main pipe 203. The valve 301 is used to control the flow state of water in the main pipe 203. The valve stem of the valve 301 is fixedly connected to a first gear 302. A rack 303 that meshes with the first gear 302 is slidably connected to the water storage housing 201. The rack 303 is provided with a pushing component for driving its own movement. The pushing component includes a first elastic member 304. The first elastic member 304 is a tension spring. The first elastic member 304 is used to drive the rack 303 to slide back to its original position. The first elastic member 304 is arranged between the water storage housing 201 and the rack 303. The rack 303 is fixedly connected to a magnetic block 305. An electromagnet 306 is fixedly connected to the bottom of the water storage housing 201. The magnetic property of the electromagnet 306 after being energized is opposite to that of the magnetic block 305. The electromagnet 306 will generate a repulsive force on the magnetic block 305 after being energized. The electromagnet 306 is used to drive the rack 303 to move through the magnetic block 305.

[0030] The above settings can achieve the following: when the electromagnet 306 is energized, the electromagnet 306 has magnetism and exerts a repulsive force on the magnetic block 305, causing the magnetic block 305 to drive the rack 303 to move. At the same time, the first elastic member 304 is stretched. The rack 303 opens the valve 301 through the first gear 302, so that the water in the water storage housing 201 can enter all the dispersion pipes 204 along the main pipe 203. The dispersion pipes 204 soak the adjacent sponge layers 5, and the water in the sponge layers 5 dissipates heat from the main body 1 of the frequency converter. After the electromagnet 306 is powered off, the first elastic member 304 pulls the rack 303 back to its original position and closes the valve 301 through the first gear 302, stopping the injection of water into the sponge layers 5.

[0031] When the device is running, several cooling fans 6 on the fixed housing 2 are turned on, so that the cooling fans 6 extract the air flow inside the fixed housing 2, making the air flow flow from top to bottom and passing through several heat dissipation fins 3 for heat exchange to absorb the heat inside the main body 1 of the frequency converter. At the same time, the air flow from top to bottom between the two heat dissipation fins 3 can form a thrust on the adjacent two sponge layers 5, improving the fitting effect between the sponge layers 5 and the heat dissipation fins 3. When the temperature sensor detects that the temperature inside the main body 1 of the frequency converter rises to a specific value (the heat inside the main body 1 of the frequency converter cannot be dissipated in time by air cooling), at this time, the electromagnet 306 is energized, so that the electromagnet 306 has magnetism and generates a repulsive force on the magnetic block 305, causing the magnetic block 305 to open the valve 301 through the rack 303 and the first gear 302, making the water in the main pipe 203 start to flow and enter the sponge layers 5 through several dispersion pipes 204, so that each sponge layer 5 adsorbs water and is in a wet state. After a period of time, the sponge layers 5 are completely wet. At this time, the power supply to the electromagnet 306 is stopped. Under the action of the first elastic member 304, the rack 303 returns to its original position and closes the valve 301, stopping the injection of water flow into the sponge layers 5.

[0032] When the temperature sensor detects that the temperature inside the frequency converter main body 1 is lower than a specific value or the liquid level sensor inside the water storage shell 201 detects that the water in the water storage shell 201 is used up, the above-mentioned movement is terminated at this time, that is, the electromagnet 306 is no longer powered on. At this time, the device only dissipates heat through the cooling fan 6. When the temperature sensor detects that the temperature inside the frequency converter main body 1 is still higher than the specific value, the electromagnet 306 is continuously powered on, and the above-mentioned movement is repeated until the temperature inside the frequency converter main body 1 is lower than the specific value or the liquid level sensor inside the water storage shell 201 detects that the water in the water storage shell 201 is used up. By intermittently injecting water into the sponge layer 5, the water in the sponge layer 5 and the air flow flowing from top to bottom are used for combined heat dissipation of the heat dissipation fins 3, increasing the utilization rate of the water in the water storage shell 201, improving the heat dissipation rate of the heat inside the frequency converter main body 1, timely dissipating the heat inside the frequency converter main body 1, and ensuring the integrity of the electronic components inside the frequency converter main body 1.

[0033] In the above process, when the device is installed indoors or other places where it is easy for workers to maintain, water can be regularly added to the water storage shell 201. For outdoor use, the external rainwater can be collected through the water inlet shell 202 to make the rainwater enter the water storage shell 201. The connection between the water storage shell 201 and the water inlet shell 202 is in a bent structure. When adding water to the water storage shell 201, water will remain at the bottom of the water inlet shell 202 and seal the water in the water storage shell 201, which can reduce the probability of water evaporation in the water storage shell 201.

[0034] Embodiment 2 This embodiment discloses a safe frequency converter, which is further improved on the basis of Embodiment 1.

[0035] Such as Figure 5 And Figure 8 As shown, it further includes a separation component for separating the sponge layer 5 and the heat dissipation fins 3. The separation component is arranged on two sliding frames 4. The separation component includes a second gear 401, and the second gear 401 is rotatably connected to the bottom of the water storage shell 201. The two sliding frames 4 are symmetrically distributed about the center. The sponge layers 5 attached to both sides of the heat dissipation fins 3 are respectively located on different sliding frames 4. First tooth portions 402 are arranged on the opposite sides of the two sliding frames 4. The second gear 401 meshes with both first tooth portions 402. A second elastic member 403 is arranged between the second gear 401 and the water storage shell 201. The second elastic member 403 is a torsion spring, and the second elastic member 403 is used to drive the second gear 401 to reset. A delay component for delaying the reset of the sliding frame 4 is arranged on the water storage shell 201. The right sliding frame 4 is fixedly connected with a trigger block 404 (as Figure 7For the sake of illustration in terms of direction), the rack 303 drives the right sliding frame 4 through the trigger block 404. In this embodiment, the initial sponge layer 5 is not in contact with the adjacent heat dissipation fins 3, and the two sponge layers 5 between two adjacent heat dissipation fins 3 are in contact with each other, which is used to increase the contact area between the air flow formed by the heat dissipation fan 6 and the heat dissipation fins 3.

[0036] The above settings can achieve that the rack 303 can drive the right sliding frame 4 to move through the trigger block 404 (taking Figure 7 direction as an example for illustration), and the right sliding frame 4 drives the left sliding frame 4 to move in the opposite direction through the second gear 401, so that the two sliding frames 4 drive the sponge layers 5 thereon to be in contact with the heat dissipation fins 3.

[0037] As Figure 5 and Figure 9 shown, the delay component includes a first clamping block 405. The first clamping block 405 is a wedge-shaped structure. The first clamping block 405 is fixedly connected to the right sliding frame 4 (taking Figure 7 direction as an example for illustration). The bottom of the water storage shell 201 is slidably connected with a second clamping block 406. The second clamping block 406 also has a wedge-shaped structure. The second clamping block 406 is used to limit the first clamping block 405, and the fixed shell 2 is provided with a timing unlocking component for separating the first clamping block 405 and the second clamping block 406.

[0038] The above settings can achieve that the right sliding frame 4 drives the first clamping block 405 to move synchronously, so that the first clamping block 405 squeezes the second clamping block 406 to move upward. After the first clamping block 405 passes through the second clamping block 406, the second clamping block 406 falls to form a limit on the first clamping block 405.

[0039] As Figure 5 and Figure 9 shown, the timing unlocking component includes a timer module 501. The timer module 501 is similar to the principle of a timing alarm clock. The input end of the timer module 501 is the spring structure of the alarm clock, and the output end of the timer module 501 is the alarm hammer. The timer module 501 is fixedly connected to the bottom of the water storage shell 201. The input end of the timer module 501 is fixedly connected with a third gear 502. The sliding frame 4 is provided with a second tooth part 503 meshing with the third gear 502. The output end of the timer module 501 is used to drive the second clamping block 406 to move.

[0040] The above settings can achieve that when the right sliding frame 4 moves, it can drive the second tooth part 503 to move synchronously, so that the second tooth part 503 drives the third gear 502 to rotate, and performs a timing operation on the timer module 501. When the countdown of the timer module 501 ends, the output end of the timer module 501 raises the second clamping block 406, thereby releasing the limit on the first clamping block 405.

[0041] During the process of injecting water into the sponge layer 5 by the above-mentioned opening main pipe 203, the rack frame 303 drives the sliding frame 4 on the right side through the trigger block 404 (taking the Figure 7 direction as an example for illustration). At the same time, the sliding frame 4 on the right side makes the sliding frame 4 on the left side move in the opposite direction by means of the second gear 401. At the same time, the second elastic member 403 twists and stores energy, so that the two sliding frames 4 drive all the sponge layers 5 thereon to fit with the adjacent heat dissipation fins 3. At the same time, water in the main pipe 203 is injected into the sponge layer 5, so that the sponge layer 5 adsorbs water to dissipate heat from the heat dissipation fins 3.

[0042] When the above-mentioned sliding frame 4 on the right side moves, it will drive the first latch 405 to move synchronously. The first latch 405 contacts the second latch 406 and squeezes the second latch 406 to move upward. When the first latch 405 passes the second latch 406, the second latch 406 limits the sliding frame 4 on the right side through the first latch 405. At this time, the sponge layer 5 fits with the adjacent heat dissipation fins 3, that is, the rack frame 303 stops moving. When the sliding frame 4 on the right side moves, it synchronously drives the second tooth part 503 thereon. The second tooth part 503 meshes with the third gear 502, so that the third gear 502 rotates to perform a timing operation on the timer module 501. At this time, the timer module 501 starts to count down. When the power supply to the electromagnet 306 is stopped, the rack frame 303 resets and closes the valve 301, and stops injecting water into the sponge layer 5. At this moment, since the second latch 406 locks the first latch 405, the torsion force stored in the second elastic member 403 cannot drive the sliding frame 4 on the right side to reset, and the sponge layer 5 still fits outside the adjacent heat dissipation fins 3, so that the water adsorbed in the sponge layer 5 dissipates heat from the heat dissipation fins 3, making full use of the water in the sponge layer 5 until the water in the sponge layer 5 is consumed.

[0043] When the countdown of the timer module 501 ends, the output end of the timer module 501 at this time pushes the second latch 406 to move upward. At this time, the second latch 406 releases the limit on the first latch 405, and drives the second gear 401 to reset and rotate under the action of the second elastic member 403, so that the two sliding frames 4 reset, and the sponge layer 5 is separated from the adjacent heat dissipation fins 3 until the two sliding frames 4 reset to the initial state. Similarly to Embodiment 1, when the temperature sensor detects that the temperature in the frequency converter main body 1 is lower than a specific value or the liquid level sensor in the water storage shell 201 detects that the water in the water storage shell 201 is used up, the power supply to the electromagnet 306 is no longer turned on. When the temperature sensor detects that the temperature in the frequency converter main body 1 is still higher than the specific value, the power supply to the electromagnet 306 is continued, and the above-mentioned movement is repeated until the temperature in the frequency converter main body 1 is lower than the specific value or the liquid level sensor in the water storage shell 201 detects that the water in the water storage shell 201 is used up. When air-cooling the frequency converter main body 1, the two sliding frames 4 move in the opposite direction, driving all the sponge layers 5 to be separated from the adjacent heat dissipation fins 3, so that the air flow directly contacts the heat dissipation fins 3, improving the heat dissipation rate.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A safety type frequency converter, characterized in that: It includes a frequency converter main body (1), the frequency converter main body (1) is fixedly connected with a fixed shell (2), the frequency converter main body (1) is fixedly connected with evenly distributed heat dissipation fins (3), the heat dissipation fins (3) are located between the fixed shell (2) and the frequency converter main body (1), the fixed shell (2) is slidably connected with two sliding frames (4), the sliding frames (4) are fixedly connected with a plurality of sponge layers (5), the sponge layers (5) are used for dissipating heat from the adjacent heat dissipation fins (3), the fixed shell (2) is provided with a plurality of heat dissipation fans (6), a temperature sensor for detecting its own temperature is arranged in the frequency converter main body (1), and a water cooling component for storing water and injecting water into the sponge layers (5) is arranged on the frequency converter main body (1).

2. The safety type frequency converter according to claim 1, characterized in that, The flow direction of the gas driven by the heat dissipation fan (6) in the fixed shell (2) is from top to bottom, which is used to make the bottom of the sponge layer (5) closely fit with the adjacent heat dissipation fins (3).

3. The safety type frequency converter according to claim 2, characterized in that, The water cooling component includes a water storage shell (201), the water storage shell (201) is fixedly connected to the frequency converter main body (1), the water storage shell (201) is fixedly connected and communicated with a water inlet shell (202), a liquid level sensor for detecting the internal water content is arranged in the water storage shell (201), the water storage shell (201) is fixedly connected and communicated with a main pipe (203), the main pipe (203) penetrates the fixed shell (2), a dispersion pipe (204) is arranged in all the sponge layers (5), the dispersion pipe (204) is fixedly connected and communicated with the main pipe (203), and a control component for regularly injecting water into all the sponge layers (5) is arranged on the frequency converter main body (1).

4. The safety type frequency converter according to claim 3, characterized in that, The connection part between the water inlet shell (202) and the water storage shell (201) is in a bent structure, which is used to leave water in the water inlet shell (202) and form a seal for the water in the water storage shell (201).

5. The safety type frequency converter according to claim 4, characterized in that, The control component includes a valve (301), the valve (301) is arranged on the main pipe (203), the valve (301) is used to control the flow state of the water in the main pipe (203), a first gear (302) is fixedly connected to the valve rod of the valve (301), a rack frame (303) meshing with the first gear (302) is slidably connected to the water storage shell (201), and a pushing component for driving the rack frame (303) to move is arranged on the rack frame (303).

6. The safety type frequency converter according to claim 5, characterized in that, The pushing component includes a first elastic member (304), the first elastic member (304) is arranged between the water storage shell (201) and the rack frame (303), a magnetic block (305) is fixedly connected to the rack frame (303), and an electromagnet (306) is fixedly connected to the water storage shell (201), and the electromagnet (306) is used to drive the rack frame (303) to move through the magnetic block (305).

7. The safety type frequency converter according to claim 6, characterized in that, It further includes a separation component for separating the sponge layer (5) and the heat dissipation fins (3). The separation component is arranged on the two sliding frames (4). The separation component includes a second gear (401). The second gear (401) is rotatably connected to the water storage shell (201). Both of the two sliding frames (4) are provided with first tooth portions (402). The second gear (401) meshes with both of the first tooth portions (402). A second elastic member (403) is arranged between the second gear (401) and the water storage shell (201). A delay component for delaying the reset of the sliding frame (4) is arranged on the water storage shell (201).

8. The safety type frequency converter according to claim 7, characterized in that, A trigger block (404) is fixedly connected to any one of the sliding frames (4). The rack frame (303) drives the sliding frame (4) to move through the trigger block (404).

9. The safety type frequency converter according to claim 8, characterized in that, The delay component includes a first latch (405). The first latch (405) is fixedly connected to the sliding frame (4). A second latch (406) is slidably connected to the water storage shell (201). The second latch (406) is used for limiting the first latch (405). A timing unlocking component for separating the first latch (405) and the second latch (406) is arranged on the fixed shell (2).

10. The safety type frequency converter according to claim 9, characterized in that, The timing unlocking component includes a timer module (501). The timer module (501) is fixedly connected to the water storage shell (201). An input end of the timer module (501) is fixedly connected to a third gear (502). The sliding frame (4) is provided with a second tooth portion (503) meshing with the third gear (502). An output end of the timer module (501) is used for driving the second latch (406) to move.

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