Heat dissipation structure of frequency converter

Abstract

The utility model relates to the field of frequency converters, and discloses a heat dissipation structure of a frequency converter, which comprises a first fin arranged on a frequency converter body and a cooling unit arranged on the first fin and used for accelerating cooling of the first fin. The first air cooler is used for cooling the first fins in an air cooling manner; the water cooling mechanism is arranged on the frequency converter body, is located on the air cooling mechanism and is used for performing water cooling on the first fins; the fixing mechanism is arranged on the water cooling mechanism and used for fixing the water cooling mechanism and the frequency converter body, the double heat dissipation mechanism can significantly improve the heat dissipation efficiency, and it is ensured that the frequency converter can still keep a good working temperature during high-load operation.

Description

Technical Field

[0001] This utility model relates to the field of frequency converter technology, specifically to a heat dissipation structure for a frequency converter. Background Technology

[0002] A frequency converter is a power control device that uses frequency conversion technology and microelectronics to control an AC motor by changing the frequency of the power supply. Frequency converters play an important role in production and are widely used in high-power motors such as fans, pumps, and hoists.

[0003] Existing equipment has the following drawbacks: frequency converters generate a lot of heat during operation. If the heat dissipation is not good, it will affect the stability and lifespan of the operation. Traditional frequency converter heat dissipation methods mostly rely on natural cooling, which may not be able to meet the heat dissipation requirements in some high-load or long-term operation scenarios.

[0004] Therefore, this application proposes a heat dissipation structure for a frequency converter to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of this utility model is to provide a heat dissipation structure for frequency converters, so as to solve the problem that the traditional heat dissipation methods of frequency converters mostly rely on natural cooling, which may not be able to meet the heat dissipation requirements in some high-load or long-term operation scenarios.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a heat dissipation structure for a frequency converter, comprising a first fin disposed on the frequency converter body and a cooling unit disposed on the first fin for accelerating the cooling of the first fin:

[0007] The cooling unit includes:

[0008] An air-cooling mechanism is located at the lower end of the inverter body and is used to cool the first fins by air.

[0009] A water-cooling mechanism is installed on the inverter body and located on the air-cooling mechanism, and is used to cool the first fins with water.

[0010] A fixing mechanism is provided on the water-cooling mechanism for fixing the water-cooling mechanism to the inverter body.

[0011] The air-cooling mechanism includes a mounting bracket on the inverter body, a motor on the mounting bracket, a rotating shaft on the motor power output end and passing through the mounting bracket, and fan blades on the side of the rotating shaft away from the motor. The mounting bracket is provided with a protective net for protecting the fan blades.

[0012] The water cooling mechanism comprises a connecting frame arranged on the frequency converter body, a water inlet tank arranged on one side of the connecting frame, a water collecting tank arranged on the other side of the connecting frame, a water inlet pipe arranged on the water inlet tank, a water outlet pipe arranged on the water inlet tank and a water draining plate arranged between the water inlet tank and the water collecting tank and communicated with the water inlet pipe and the water outlet pipe, and second fins are arranged between the water inlet tank and the water collecting tank and spaced from the water draining plate.

[0013] The lower end of the frequency converter body is provided with a mounting plate, the fixing mechanism comprises a connecting plate arranged on the side edge of the connecting frame, a screw rod threadedly connected on the connecting plate, a rotating block arranged on the lower end of the screw rod, a pressing plate arranged on the upper end of the screw rod and a fixing plate sleeved on the screw rod, the fixing plate is arranged on the part between the connecting plate and the pressing plate, the fixing plate abuts against the upper end of the mounting plate, and the connecting plate abuts against the lower end of the mounting plate.

[0014] The fixing mechanism is symmetrically arranged at the four corners of the side edge of the connecting frame.

[0015] The inside of the frequency converter body is provided with a temperature sensor, the inside of the frequency converter body is provided with a controller, and the temperature sensor is electrically connected with the cooling unit through the controller.

[0016] Compared with the prior art, the utility model has the advantages that:

[0017] The utility model discloses a kind of frequency converter cooling structures, including frequency converter body, the water cooling mechanism arranged on the frequency converter body, the fixed mechanism arranged on the frequency converter body, the air cooling mechanism arranged on the frequency converter body, the temperature sensor arranged in the frequency converter body, the controller arranged in the frequency converter body, the cooling unit electrically connected with the temperature sensor, the frequency converter body is provided with the air cooling mechanism, the water cooling mechanism and the fixed mechanism, the air cooling mechanism is arranged on the frequency converter body, the water cooling mechanism is arranged on the frequency converter body, and the fixed mechanism is arranged on the frequency converter body. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is main structure schematic diagram in an embodiment of the utility model;

[0019] Figure 2 It is structure schematic diagram of front view in an embodiment of the utility model;

[0020] Figure 3 It is structure schematic diagram of section in an embodiment of the utility model;

[0021] Figure 4It is the structure schematic view of the embodiment of the utility model from the top view;

[0022] Figure 5 It is the structure schematic view of the embodiment of the utility model that the cooling unit is connected with the frequency converter body;

[0023] Figure 6 It is the structure schematic view of the cooling unit of the embodiment of the utility model;

[0024] Figure 7 It is the structure schematic view of the explosion of the cooling unit of the embodiment of the utility model;

[0025] Figure 8 It is Figure 5 The structure schematic view of the enlarged A part in the middle.

[0026] In the drawing: 1, frequency converter body;11, first fin;12, mounting plate;13, controller;14, temperature sensor;2, cooling unit;21, air cooling mechanism;211, mounting frame;212, motor;213, rotating shaft;214, fan blade;215, protective net;22, water cooling mechanism;221, connecting frame;222, water inlet tank;223, water collecting tank;224, water inlet pipe;225, water outlet pipe;226, drain plate;227, second fin;23, fixing mechanism;231, connecting plate;232, screw;233, rotating block;234, extrusion plate;235, fixed plate. Specific implementation

[0027] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0028] Please refer to Figures 1-8 The utility model provides a technical scheme: a heat dissipation structure of frequency converter, including first fin 11 that sets up on frequency converter body 1 and cooling unit 2 for accelerating the cooling of first fin 11 that sets up on first fin 11:

[0029] Cooling unit 2 includes:

[0030] Air cooling mechanism 21, set up on the lower end of frequency converter body 1, is used to air cooling cooling of first fin 11;

[0031] Water cooling mechanism 22, set up on frequency converter body 1 and be located on air cooling mechanism 21, is used to water cooling cooling of first fin 11;

[0032] The fixing mechanism 23 is arranged on the water cooling mechanism 22 and is used to fix the water cooling mechanism 22 to the frequency converter body 1.

[0033] It should be noted that, in operation, the cooling unit 2 is installed at the lower end of the first fin 11 of the frequency converter body 1, the fixing mechanism 23 is installed at the side of the water cooling mechanism 22, and then the fixing mechanism 23 is installed at the lower end of the frequency converter body 1. During normal use of the frequency converter body 1, heat dissipation through the first fin 11 can meet the daily use requirements. When the temperature of the frequency converter body 1 continuously rises and exceeds the daily value, the air cooling mechanism 21 is opened to perform air cooling heat dissipation on the first fin 11. When the air cooling mechanism 21 cannot sufficiently dissipate the heat of the frequency converter body 1, the water cooling mechanism 22 is started to cool the air blown by the air cooling mechanism 21, thereby reducing the temperature of the air blown by the air cooling mechanism 21 to the first fin 11, and further improving the heat dissipation efficiency of the first fin 11. By combining the air cooling and water cooling heat dissipation modes, the air cooling mechanism 21 generates forced convection by electricity to accelerate the heat dissipation of the first fin 11, and the water cooling mechanism 22 further absorbs and removes the heat on the fin through circulating water flow. The double heat dissipation mechanism can significantly improve the heat dissipation efficiency and ensure that the frequency converter can maintain a good working temperature during high-load operation. The fixing mechanism 23 is arranged to stably fix the water cooling mechanism 22 to the frequency converter body 1, thereby reducing the heat dissipation efficiency caused by vibration or temperature change. The stable structure design not only prolongs the service life of the heat dissipation structure, but also ensures the continuity and stability of the heat dissipation effect.

[0034] In an embodiment, the air cooling mechanism 21 includes a mounting frame 211 arranged on the frequency converter body 1, a motor 212 arranged on the mounting frame 211, a rotating shaft 213 arranged at the power output end of the motor 212 and penetrating through the mounting frame 211, and a fan blade 214 arranged at the side of the rotating shaft 213 away from the motor 212. The mounting frame 211 is provided with a protective net 215 for protecting the fan blade 214.

[0035] In this way, the motor 212 drives the rotating shaft 213, and then drives the fan blade 214 to rotate, thereby generating forced convection to effectively cool the frequency converter body 1 and the first fin 11. This active heat dissipation mode is more efficient than natural convection and can ensure that the working temperature of the frequency converter is effectively controlled during high-load or long-time operation. The protective net 215 arranged on the mounting frame 211 can effectively prevent external objects from accidentally entering the air cooling mechanism 21, causing damage to the fan blade 214 or affecting the normal operation of the fan blade 214, and can also protect the operator from being injured by the rotating fan blade 214 to some extent, thereby improving the safety of the equipment. Figure 6 Figure 7 In this way, the motor 212 drives the rotating shaft 213, and then drives the fan blade 214 to rotate, thereby generating forced convection to effectively cool the frequency converter body 1 and the first fin 11. This active heat dissipation mode is more efficient than natural convection and can ensure that the working temperature of the frequency converter is effectively controlled during high-load or long-time operation. The protective net 215 arranged on the mounting frame 211 can effectively prevent external objects from accidentally entering the air cooling mechanism 21, causing damage to the fan blade 214 or affecting the normal operation of the fan blade 214, and can also protect the operator from being injured by the rotating fan blade 214 to some extent, thereby improving the safety of the equipment.​

[0036] In an embodiment, the water cooling mechanism 22 comprises a connecting frame 221 arranged on the frequency converter body 1, a water inlet tank 222 arranged on one side of the connecting frame 221, a water collecting tank 223 arranged on the other side of the connecting frame 221, a water inlet pipe 224 arranged on the water inlet tank 222, a water outlet pipe 225 arranged on the water inlet tank 222, and a water draining plate 226 arranged between the water inlet tank 222 and the water collecting tank 223 and in communication with the water inlet pipe 224 and the water outlet pipe 225, and a second fin 227 arranged between the water inlet tank 222 and the water collecting tank 223 and spaced from the water draining plate 226.

[0037] In this way, referring to Figure 6 , and Figure 7 , cooling water is introduced into the water inlet tank 222 through the water inlet pipe 224, flows through the water draining plate 226 and the second fin 227, and then flows into the water collecting tank 223, and is then discharged from the water outlet pipe 225. This circulation process can effectively absorb and remove the heat generated during the operation of the frequency converter body 1. The second fin 227 increases the heat dissipation area and further improves the water cooling effect, ensuring that the frequency converter can maintain an appropriate operating temperature even when operating under high load. The spacing of the water draining plate 226 and the second fin 227 allows the cooling water to flow evenly through the entire water cooling mechanism 22, avoiding local overheating or uneven cooling, thereby ensuring stable operation of the frequency converter. The water cooling mechanism 22 is located above the air cooling mechanism 21 and can cool the air blown by the air cooling mechanism 21, making the cold air blown to the first fin 11 have a lower temperature, and further improving the cooling efficiency of the cooling unit 2 on the frequency converter body 1.

[0038] In an embodiment, the lower end of the frequency converter body 1 is provided with a mounting plate 12, and the fixing mechanism 23 comprises a connecting plate 231 arranged on the side of the connecting frame 221, a screw rod 232 threadedly connected to the connecting plate 231, a rotating block 233 arranged at the lower end of the screw rod 232, an extrusion plate 234 arranged at the upper end of the screw rod 232, and a fixing plate 235 sleeved on the screw rod 232. The fixing plate 235 is arranged between the connecting plate 231 and the extrusion plate 234, abuts against the upper end of the mounting plate 12, and the connecting plate 231 abuts against the lower end of the mounting plate 12.

[0039] In this way, referring to Figure 5 , and Figure 8When installing the water-cooling mechanism 22, first abut the lower end of the connecting plate 231 against the mounting plate 12, then rotate the fixing plate 235 so that the fixing plate 235 is located at the upper end of the mounting plate 12. At this time, rotate the rotating block 233 to drive the screw 232 to move down, so that the pressing plate 234 drives the fixing plate 235 to move down, thereby making the mounting plate 12 clamped between the fixing plate 235 and the connecting plate 231, completing the fixing of the water-cooling mechanism 22. Through the threaded connection of the screw 232 on the connecting plate 231, and the cooperation of the fixing plate 235 and the pressing plate 234, the water-cooling mechanism 22 can be firmly fixed on the mounting plate 12 of the inverter body 1. This design not only ensures a tight contact between the heat dissipation device and the frequency converter, but also effectively prevents displacement or loosening caused by vibration or external force. Since the threaded connection of the screw 232 is adjustable, the fixing mechanism 23 can adapt to mounting plates 12 of different thicknesses or unevenness, and can be widely used in frequency converters of various models and specifications.

[0040] In one embodiment, the fixing mechanism 23 is symmetrically arranged at the four corners of the side of the connecting frame 221.

[0041] This design is for reference. Figure 5 By symmetrically setting fixing mechanisms 23 at the four corners of the side of the connecting frame 221, the stability of the water cooling mechanism 22 on the inverter body 1 can be ensured. The four corner fixings provide balanced support force, effectively preventing the water cooling mechanism 22 from shifting or tilting due to vibration or temperature changes during operation.

[0042] In one embodiment, a temperature sensor 14 is provided inside the inverter body 1, and a controller 13 is provided inside the inverter body 1. The temperature sensor 14 is electrically connected to the cooling unit 2 through the controller 13.

[0043] This design is for reference. Figure 7 Temperature sensor 14 can monitor the temperature inside the inverter body 1 in real time and transmit the temperature signal to controller 13. Controller 13 can accurately control the operating status of cooling unit 2 based on the received temperature signal to ensure that the inverter operates within a suitable temperature range.

[0044] Furthermore, if the embodiments involve descriptions such as "first," "second," etc., these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relation to the specification. The significance or implied number of the indicated technical features is not specified. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features.

Claims

1. A heat dissipation structure of a frequency converter, comprising a first fin (11) arranged on a body (1) of the frequency converter and a cooling unit (2) arranged on the first fin (11) for accelerating cooling of the first fin (11), characterized in that: the cooling unit (2) comprises: an air cooling mechanism (21) arranged at a lower end of the body (1) of the frequency converter for air cooling the first fin (11); a water cooling mechanism (22) arranged on the body (1) of the frequency converter and above the air cooling mechanism (21) for water cooling the first fin (11); and a fixing mechanism (23) arranged on the water cooling mechanism (22) for fixing the water cooling mechanism (22) to the body (1) of the frequency converter.

2. The heat dissipation structure of a frequency converter according to claim 1, characterized in that: The air cooling mechanism (21) comprises a mounting frame (211) arranged on the body (1) of the frequency converter, a motor (212) arranged on the mounting frame (211), a rotating shaft (213) arranged at a power output end of the motor (212) and penetrating through the mounting frame (211), and a fan blade (214) arranged on a side of the rotating shaft (213) away from the motor (212), and the mounting frame (211) is provided with a protective net (215) for protecting the fan blade (214).

3. The heat dissipation structure of a frequency converter according to claim 1, characterized in that: The water cooling mechanism (22) comprises a connecting frame (221) arranged on the body (1) of the frequency converter, a water inlet tank (222) arranged on one side of the connecting frame (221), a water collecting tank (223) arranged on the other side of the connecting frame (221), a water inlet pipe (224) arranged on the water inlet tank (222), a water outlet pipe (225) arranged on the water inlet tank (222), and a hydrophobic plate (226) arranged between the water inlet tank (222) and the water collecting tank (223) and in communication with the water inlet pipe (224) and the water outlet pipe (225), and a second fin (227) is arranged between the water inlet tank (222) and the water collecting tank (223) and spaced apart from the hydrophobic plate (226).

4. The heat dissipation structure of a frequency converter according to claim 3, characterized in that: A mounting plate (12) is arranged at a lower end of the body (1) of the frequency converter, the fixing mechanism (23) comprises a connecting plate (231) arranged on a side of the connecting frame (221), a screw rod (232) threadedly connected to the connecting plate (231), a rotating block (233) arranged at a lower end of the screw rod (232), an extrusion plate (234) arranged at an upper end of the screw rod (232), and a fixing plate (235) sleeved on the screw rod (232), the fixing plate (235) is arranged on a portion between the connecting plate (231) and the extrusion plate (234), the fixing plate (235) abuts against an upper end of the mounting plate (12), and the connecting plate (231) abuts against a lower end of the mounting plate (12).

5. The heat dissipation structure of a frequency converter according to claim 4, characterized in that: The fixing mechanism (23) is symmetrically arranged at four corners of the side of the connecting frame (221).

6. The heat dissipation structure of a frequency converter according to claim 1, characterized in that: The interior of the frequency converter body (1) is provided with a temperature sensor (14), the interior of the frequency converter body (1) is provided with a controller (13), and the temperature sensor (14) is electrically connected with the cooling unit (2) through the controller (13).

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