Water-cooling heat dissipation device for mining frequency converter

Abstract

The utility model relates to the technical field of heat dissipation of mining equipment, in particular to a water-cooling heat dissipation device for a mining frequency converter, which timely removes dust on cooling fins and ensures the performance and the stability of the frequency converter. Comprising a water cooling plate which is tightly attached to a heating element of a frequency converter body; the cooling liquid circulating assembly comprises a cooling liquid box, a circulating pump and a pipeline, the cooling liquid box is sequentially communicated with the circulating pump and the water cooling plate through the pipeline to form a closed circulation loop, and a plurality of cooling fins are arranged on the outer side of the cooling liquid box; the dust removal assembly is mounted on the outer side of the cooling fin and used for removing dust on the surface of the cooling fin; and the control assembly is electrically connected with the cooling liquid circulating assembly and the dust removal assembly.

Description

Technical Field

[0001] This utility model relates to the technical field of heat dissipation for mining equipment, and in particular to a water-cooled heat dissipation device for mining frequency converters. Background Technology

[0002] A frequency converter is a power control device that converts fixed-frequency alternating current (AC) into AC with adjustable frequency and voltage, thereby achieving precise control of motor speed. By changing the power supply frequency, the frequency converter can flexibly adjust the motor's operating speed to meet the needs of different working scenarios. During the operation of the frequency converter, internal power electronic components such as IGBTs generate a large amount of heat. If not dissipated in time, this can lead to overheating of the components, affecting the performance and lifespan of the frequency converter, and even causing thermal failure or stress damage. Water-cooled radiators use water-cooled plates to contact the heat-generating components, transferring heat to the coolant. Utilizing the coolant's high specific heat capacity and ability to absorb large amounts of heat, the heat is then transferred to the outside environment through internal and external heat convection during circulation.

[0003] In mining environments, the air contains a high level of dust. This dust gradually accumulates on the surface of the heat sink fins of water-cooled radiators, forming an insulating layer that hinders heat transfer into the air, leading to a significant decrease in heat exchange efficiency. When dust accumulates to a certain extent, it can cause the inverter's heat dissipation temperature to be 10℃-20℃ higher than normal, severely affecting the inverter's performance and stability. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a water-cooled heat dissipation device for mining frequency converters that can promptly remove dust from heat sinks and ensure the performance and stability of frequency converters.

[0005] This utility model discloses a water-cooled heat dissipation device for a mining frequency converter, comprising:

[0006] The water-cooled plate is tightly attached to the heat-generating elements of the inverter body;

[0007] The coolant circulation assembly includes a coolant tank, a circulation pump, and pipes. The coolant tank is connected to the circulation pump and the water-cooled plate in sequence through pipes to form a closed circulation loop. Several heat dissipation fins are provided on the outside of the coolant tank.

[0008] Dust removal components are installed on the outside of the heat sink to remove dust from the surface of the heat sink;

[0009] The control unit is electrically connected to the coolant circulation unit and the dust removal unit.

[0010] Furthermore, the dust removal components include:

[0011] A brushing mechanism, located on one side of the heat sink, is used to brush off dust.

[0012] The dust collection mechanism, located on the same side of the heat sink, is used to absorb the dust brushed off by the brushing mechanism.

[0013] Furthermore, the brushing mechanism includes a mounting frame, a drive motor, a lead screw, a slider, and a cleaning brush; the mounting frame is fixed on the coolant tank, the drive motor is mounted on one end of the mounting frame, the lead screw is connected to the output shaft of the drive motor and is rotatably disposed within the mounting frame, the slider is screwed to the lead screw, the cleaning brush is mounted on the slider, and the cleaning brush is in contact with the surface of the heat sink.

[0014] Furthermore, the cleaning brush is mounted on the slider via a quick-release connection structure. The quick-release connection structure includes a slot on the slider and a locking block on the cleaning brush that is compatible with the slot. The locking block engages with the slot and is equipped with an unlocking mechanism.

[0015] Furthermore, the vacuuming mechanism includes a vacuum fan, a vacuum pipe, and a vacuum port. The vacuum pipe connects the vacuum fan and the vacuum port, and the vacuum port is located below the heat sink.

[0016] Furthermore, the dust removal assembly also includes a filtration mechanism, which is located at the air outlet of the dust collection fan. The filtration mechanism is a bag filter or a cartridge filter.

[0017] Furthermore, the control components include a temperature sensor, a dust sensor, a flow control valve, and a controller; the temperature sensor is installed in the coolant flow channel of the water-cooled plate, the dust sensor is installed near the heat sink, the flow control valve is installed on the pipe, and the controller is electrically connected to the temperature sensor, the dust sensor, the flow control valve, the circulating pump, and the dust removal component, respectively.

[0018] Furthermore, the heat sink is coated with a dust-repellent material.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] 1. The dust removal component brushes off dust, the dust collection mechanism absorbs the brushed dust, and the filtration mechanism further filters the dust, effectively removing dust from the surface of the heat sink, preventing dust accumulation from forming a heat insulation layer, avoiding a decrease in heat exchange efficiency, ensuring the heat dissipation effect of the frequency converter, thereby improving the performance and stability of the frequency converter, and reducing equipment failures and performance degradation caused by dust affecting heat dissipation.

[0021] 2. The controller monitors the coolant temperature in real time using a temperature sensor and detects dust near the heat sink using a dust sensor. Based on the feedback from the temperature and dust sensors, the controller controls the flow control valve to adjust the coolant flow and controls the working status of the circulation pump and dust removal components. This achieves precise and intelligent control of heat dissipation and dust removal, better adapts to different working environments and heat dissipation requirements, and improves the automation level and working efficiency of the device.

[0022] 3. The cleaning brush in the brushing mechanism is installed through a quick-release connection structure, which makes the replacement of the cleaning brush simple and convenient. When the cleaning brush is worn or needs cleaning, it can be quickly disassembled and installed, which facilitates maintenance and reduces the time and cost of equipment maintenance. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is a structural schematic diagram of the coolant tank and dust removal component of this utility model;

[0026] Figure 3 This is a schematic diagram of the cleaning brush and mounting frame of this utility model;

[0027] The attached diagram is labeled as follows: 1. Water-cooled plate; 2. Coolant circulation assembly; 21. Coolant tank; 211. Heat sink; 22. Circulation pump; 23. Pipeline; 3. Dust removal assembly; 31. Brushing mechanism; 311. Mounting frame; 312. Drive motor; 313. Lead screw; 314. Slider; 315. Cleaning brush; 316. Quick-release connection structure; 3161. Slot; 3162. Locking block; 3163. Unlocking component; 32. Dust suction mechanism; 321. Dust suction fan; 322. Dust suction pipe; 323. Dust suction port; 33. Filter mechanism; 41. Temperature sensor; 42. Dust sensor; 43. Flow control valve. Detailed Implementation

[0028] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0029] like Figures 1 to 3 As shown, this utility model discloses a water-cooled heat dissipation device for a mining frequency converter, comprising:

[0030] Water-cooled plate 1 is tightly attached to the heat-generating elements of the inverter body;

[0031] The coolant circulation assembly 2 includes a coolant tank 21, a circulation pump 22 and a pipe 23. The coolant tank 21 is connected to the circulation pump 22 and the water-cooled plate 1 in sequence through the pipe 23 to form a closed circulation loop. Several heat sinks 211 are provided on the outside of the coolant tank 21.

[0032] Dust removal component 3 is installed on the outside of heat sink 211 and is used to remove dust from the surface of heat sink 211;

[0033] The control unit is electrically connected to the coolant circulation unit 2 and the dust removal unit 3;

[0034] During operation, the heat generated by the heating element is conducted to the water-cooled plate 1. The coolant in the coolant tank 21 flows into the water-cooled plate 1 through the pipe 23 under the action of the circulation pump 22. Utilizing the high specific heat capacity of the coolant, it absorbs the heat transferred from the water-cooled plate 1 and then flows back to the coolant tank 21. After absorbing heat, the coolant exchanges heat with the heat sink 211 in the coolant tank 21, transferring heat to the heat sink 211. Then, through thermal convection between the heat sink 211 and the surrounding air, the heat is dissipated to the outside. When dust accumulates on the surface of the heat sink 211, the dust removal component 3 removes the dust from the surface of the heat sink 211 to prevent dust accumulation from forming a heat insulation layer and to ensure the heat exchange efficiency of the heat sink 211. The control component adjusts the coolant circulation component 2 according to the actual operating conditions, thereby controlling the circulation speed and flow rate of the coolant, and at the same time controlling the working frequency of the dust removal component 3 to achieve precise control of efficient heat dissipation and dust removal.

[0035] Dust removal component 3 includes:

[0036] The brushing mechanism 31 is located on one side of the heat sink 211 and is used to brush off dust.

[0037] The dust collection mechanism 32 is located on the same side of the heat sink 211 and is used to absorb the dust brushed off by the brushing mechanism 31.

[0038] The brushing mechanism 31 loosens the dust with mechanical force, while the vacuuming mechanism 32 uses the strong negative pressure generated inside to ensure that the dust is sucked away and collected, preventing the cleaned dust from being scattered again and avoiding secondary accumulation.

[0039] The preferred brushing mechanism 31 includes a mounting frame 311, a drive motor 312, a lead screw 313, a slider 314, and a cleaning brush 315. The mounting frame 311 is fixed to the coolant tank 21. The drive motor 312 is mounted on one end of the mounting frame 311. The lead screw 313 is connected to the output shaft of the drive motor 312 and is rotatably disposed within the mounting frame 311. The slider 314 is screwed to the lead screw 313. The cleaning brush 315 is mounted on the slider 314 and contacts the surface of the heat sink 211. 2 is used to stably provide power. The forward and reverse rotation of the drive motor 312 drives the lead screw 313 to rotate synchronously. According to the lead screw and nut transmission principle, the rotation of the lead screw 313 will be converted into the linear motion of the slider 314 along the axis of the lead screw 313. The cleaning brush 315 moves with the slider 314 to perform a back-and-forth brushing action on the surface of the heat sink 211. The length of the cleaning brush 315 can cover the width of the heat sink 211, and the bristles penetrate into the gaps of the heat sink 211 to perform a comprehensive brushing of the entire surface of the heat sink 211, avoiding cleaning dead corners.

[0040] The preferred cleaning brush 315 is mounted on the slider 314 via a quick-release connection structure 316. The quick-release connection structure 316 includes a slot 3161 on the slider 314 and a locking block 3162 on the cleaning brush 315 that matches the slot 3161. The locking block 3162 engages with the slot 3161, and an unlocking element 3163 is provided on the locking block 3162. In mining environments with high dust levels, the cleaning brush 315 wears out relatively quickly. When the bristles of the cleaning brush 315 wear down and affect the dust removal effect, the locking block 3162 is disengaged from the slot 3161 by operating the unlocking element 3163, thus quickly disassembling the cleaning brush 315. The locking block 3162 of the new cleaning brush 315 is then aligned with the slot 3161 and inserted into it, completing the quick installation and saving replacement time.

[0041] The preferred dust collection mechanism 32 includes a dust collection fan 321, a dust collection pipe 322, and a dust collection port 323. The dust collection pipe 322 connects the dust collection fan 321 and the dust collection port 323, which is located below the heat sink 211. When the dust collection fan 321 is started, a negative pressure is formed in the dust collection pipe 322. This negative pressure is transmitted to the dust collection port 323. Under the action of the negative pressure, dust enters the dust collection pipe 322 through the dust collection port 323 and is eventually collected in the dust collection chamber of the dust collection fan 321. By placing the dust collection port 323 below the heat sink 211, the characteristic of dust falling naturally can be used to effectively collect dust. The shape of the dust collection port 323 is rectangular, providing a large adsorption area to quickly suck up the brushed dust and improve collection efficiency.

[0042] The preferred dust removal component 3 also includes a filter mechanism 33, which is located at the air outlet of the dust collector 321. The filter mechanism is a bag filter or a cartridge filter. When the dust collector 321 draws in air and discharges it through the air outlet, the filter mechanism 33 uses the microporous structure of the fiber filter material to filter out dust particles in the discharged gas and traps them on the surface of the filter material, while clean air is discharged through the filter material, reducing pollution to the surrounding air. Bag filters or cartridge filters are usually equipped with a dust removal device, such as pulse jet or mechanical vibration, to automatically remove the dust layer on the surface of the filter material, reducing the frequency of manual cleaning and lowering maintenance costs.

[0043] The preferred control components include a temperature sensor 41, a dust sensor 42, a flow control valve 43, and a controller. The temperature sensor 41 is installed inside the coolant flow channel of the water-cooled plate 1, the dust sensor 42 is installed near the heat sink 211, and the flow control valve 43 is installed on the pipe 23. The controller is electrically connected to the temperature sensor 41, dust sensor 42, flow control valve 43, circulating pump 22, and dust removal assembly 3. The temperature sensor 41 is used to monitor the temperature change of the coolant after absorbing heat from the inverter's heating elements in real time. The dust sensor 42 is used to detect the dust concentration on the surface of the heat sink 211. The temperature sensor 41 and dust sensor 42 transmit the collected temperature and dust data to the controller in real time. In this way, the control components can grasp the operating status of the device, which is convenient for precise regulation. Based on the temperature data fed back by the temperature sensor 41, the controller controls the flow control valve 43 to adjust the flow rate of the coolant in the pipe 23. When the temperature rises, the coolant flow rate is increased to improve the heat dissipation speed; when the temperature drops, the flow rate is appropriately reduced to avoid energy waste. At the same time, the speed of the circulating pump 22 is adjusted to further optimize the circulation efficiency of the coolant and ensure that the frequency converter always operates within a suitable temperature range. Based on the dust concentration data fed back by the dust sensor 42, the controller automatically starts the dust removal component 3 to clean the dust on the surface of the heat sink 211 in a timely manner, quickly responding to the dust accumulation situation and preventing dust accumulation from affecting the heat exchange efficiency of the heat sink 211.

[0044] The heat sink 211 is preferably coated with a dust-repellent material. The dust-repellent material has a special microstructure and surface chemical properties. The molecules are tightly arranged and the surface energy is low, which greatly reduces the adhesion between dust particles and the surface of the heat sink 211. Dust is difficult to form a stable adhesion on the surface of the heat sink 211 and can easily be removed under the action of a small external force. This reduces the difficulty and workload of cleaning the dust removal component 3, reduces the wear rate of parts, and reduces the frequency and cost of replacement.

[0045] The working process of this utility model is as follows:

[0046] The circulating pump 22 pumps the coolant from the coolant tank 21 into the water-cooled plate 1 through the pipe 23. The water-cooled plate 1 is in close contact with the heat-generating elements of the inverter body, absorbing the heat generated during inverter operation and raising the coolant temperature. The heated coolant then flows back to the coolant tank 21 through the pipe 23. In the coolant tank 21, the coolant exchanges heat with the external heat sink 211, and the heat is dissipated into the surrounding air through the heat sink 211, thus cooling the inverter. During this process, the temperature sensor 41 continuously monitors the coolant temperature in the coolant flow channel of the water-cooled plate 1 and feeds the data back to the controller in real time. If the temperature exceeds the set range, the controller will control the flow control valve 43 to adjust the flow rate of the coolant in the pipe 23 and adjust the speed of the circulating pump 22 to ensure that the coolant can efficiently remove the heat from the inverter and maintain the inverter operating at a suitable temperature. The dust sensor 42 monitors the area near the heat sink 21 in real time. The dust concentration at position 1 is measured and transmitted to the controller. When the dust concentration reaches a set threshold, the controller activates the dust removal component 3. The drive motor 312 of the brushing mechanism 31 rotates, driving the lead screw 313 to rotate. This causes the slider 314, which is screwed to the lead screw 313, to drive the cleaning brush 315 to move back and forth on the surface of the heat sink 211, brushing off the accumulated dust. At the same time, the suction fan 321 of the suction mechanism 32 starts, sucking in and collecting the brushed-off dust through the suction pipe 322 and the suction port 323 located below the heat sink 211. The filter mechanism 33 at the air outlet of the suction fan 321 filters the exhaust gas, and the purified gas is discharged into the environment to prevent dust from polluting the surrounding environment again. The entire device runs continuously, and the controller continuously receives data from the temperature sensor 41 and the dust sensor 42, dynamically adjusting the working status of the flow control valve 43, the circulation pump 22, and the dust removal component 3.

[0047] The water-cooled heat dissipation device for a mining frequency converter of this utility model can be installed, connected or set in a common mechanical manner, and can be implemented as long as it can achieve its beneficial effect.

[0048] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A water-cooling heat dissipation device for a mine-used frequency converter, characterized in that, include: Water-cooled plate (1) is tightly attached to the heating element of the inverter body; The coolant circulation assembly (2) includes a coolant tank (21), a circulation pump (22) and a pipe (23). The coolant tank (21) is connected to the circulation pump (22) and the water-cooled plate (1) in sequence through the pipe (23) to form a closed circulation loop. Several heat sinks (211) are provided on the outside of the coolant tank (21). A dust removal component (3) is installed on the outside of the heat sink (211) to remove dust from the surface of the heat sink (211); The control component is electrically connected to the coolant circulation component (2) and the dust removal component (3).

2. The water-cooling heat sink for a mine frequency converter according to claim 1, characterized in that, The dust removal component (3) includes: A brushing mechanism (31) is disposed on one side of the heat sink (211) and is used to brush off dust. A dust collection mechanism (32) is located on the same side of the heat sink (211) and is used to absorb the dust brushed off by the brushing mechanism (31).

3. The water-cooling heat sink for a mine frequency converter according to claim 2, characterized in that, The brushing mechanism (31) includes a mounting frame (311), a drive motor (312), a lead screw (313), a slider (314), and a cleaning brush (315). The mounting frame (311) is fixed on the coolant tank (21). The drive motor (312) is mounted on one end of the mounting frame (311). The lead screw (313) is connected to the output shaft of the drive motor (312) and is rotatably disposed within the mounting frame (311). The slider (314) is screwed to the lead screw (313). The cleaning brush (315) is mounted on the slider (314) and is in contact with the surface of the heat sink (211).

4. The water-cooling heat sink for a mine frequency converter according to claim 3, characterized in that, The cleaning brush (315) is mounted on the slider (314) via a quick-release connection structure (316). The quick-release connection structure (316) includes a slot (3161) on the slider (314) and a block (3162) on the cleaning brush (315) that is adapted to the slot (3161). The block (3162) engages with the slot (3161), and an unlocking element (3163) is provided on the block (3162).

5. The water-cooling heat sink for a mine frequency converter according to claim 2, characterized in that, The dust collection mechanism (32) includes a dust collection fan (321), a dust collection pipe (322) and a dust collection port (323). The dust collection pipe (322) connects the dust collection fan (321) and the dust collection port (323). The dust collection port (323) is located below the heat sink (211).

6. The water-cooling heat sink for a mine frequency converter according to claim 5, characterized in that, The dust removal assembly (3) also includes a filter mechanism (33), which is located at the air outlet of the dust collector (321). The filter mechanism is a bag filter or a cartridge filter.

7. The water-cooling heat sink for a mine frequency converter according to claim 1, characterized in that, The control assembly comprises a temperature sensor (41), a dust sensor (42), a flow control valve (43) and a controller; the temperature sensor (41) is arranged in the cooling liquid flow channel of the water-cooled plate (1), the dust sensor (42) is installed at a position close to the cooling fin (211), the flow control valve (43) is installed on the pipeline (23), and the controller is electrically connected with the temperature sensor (41), the dust sensor (42), the flow control valve (43), the circulating pump (22) and the dust removal assembly (3) respectively.

8. The water-cooling heat sink for a mine frequency converter according to claim 1, characterized in that, The cooling fin (211) is coated with a dust-repellent material.

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