Water-cooling heat exchange device of frequency converter

Abstract

The utility model provides a water-cooling heat exchange device of a frequency converter. Comprising a frequency converter, a heat dissipation box is fixedly connected to the rear side of the frequency converter, a box door is hinged to the rear surface of the heat dissipation box, a first ventilation hole is formed in the box door, a cooling box is fixedly installed in the heat dissipation box, cooling liquid is arranged in the cooling box, and a filter plate is inserted in the cooling box; a temperature sensor is installed in the cooling box, and a water pump is arranged in the cooling box. According to the utility model, the filter plate is matched with the filter balls, so that impurities and wastes in the cooling liquid can be effectively filtered, and meanwhile, the corrosion and scale inhibitor is added, so that the corrosion caused by sediments on the metal surface can be prevented, the service life of the equipment is prolonged, and the formation of the sediments such as calcium carbonate and calcium sulfate can be effectively destroyed; and therefore, not only can the equipment be protected from being corroded, but also the operation efficiency of the cooling system can be improved, and energy sources can be saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat exchange and temperature reduction, and in particular relates to a water-cooled heat exchange device for a frequency converter. Background Art

[0002] At present, the working efficiency of various high-voltage inverters is usually 96% to 98%, and the power loss is 2% to 4%. The lost energy is mainly dissipated into the surrounding environment in the form of heat, which will cause the external ambient temperature of the inverter to continue to rise, resulting in the inability of the internal components of the inverter to dissipate heat, endangering the normal use of the inverter and the entire set of equipment.

[0003] The existing authorized public number is CN205490100U, which discloses a water-cooled heat exchange device for a frequency converter, including a cooling mechanism, a water delivery mechanism and a heat exchanger, wherein the cooling mechanism includes a water-cooled plate, the water-cooled plate is installed on the heating element of the frequency converter, a flow channel is arranged on the water-cooled plate, and the two ends of the flow channel are respectively a heat conduction water inlet and a heat conduction water outlet; the water delivery mechanism includes a water pump, a first water inlet pipe, a second water inlet pipe and a water outlet pipe, the first water inlet pipe connects the water outlet of the heat exchanger and the water inlet of the water pump, the second water inlet pipe connects the water outlet of the water pump and the heat conduction water inlet, and the water outlet pipe connects the heat conduction water outlet and the water inlet of the heat exchanger. The water-cooled heat exchange device for the frequency converter of the utility model has high heat dissipation efficiency, which is more than 20 times the heat dissipation efficiency of the traditional air cooling, so it can ensure the operating environment of each heating element in the frequency converter, prolong its service life, and is easy to maintain and quiet in operation. However, the water-cooled heat exchange device of the above-mentioned inverter has a relatively simple structure and lacks a filtering structure for the coolant. Impurities and waste in the coolant may not be effectively removed. These impurities and waste will adhere to the pipes and equipment, causing blockage of the pipes and equipment, and further affecting the normal operation of the cooling system. Therefore, it is necessary to provide a water-cooled heat exchange device for the inverter to solve the above-mentioned problems. Utility Model Content

[0004] The technical content of the utility model is to provide a water-cooling heat exchange device for a frequency converter.

[0005] In order to solve the above problems, the utility model provides a frequency converter water-cooled heat exchange device, including a frequency converter, a heat sink is fixedly connected to the rear side of the frequency converter, and the rear surface of the heat sink is hingedly connected to a box door, and a first ventilation hole is provided on the box door, a cooling box is fixedly installed inside the heat sink, and coolant is provided in the cooling box, a filter plate is inserted in the cooling box, a temperature sensor is installed in the cooling box, a water pump is provided inside the cooling box, and the water outlet end of the water pump is connected to the cooling pipe.

[0006] As a further solution of the present invention, a cavity is provided inside the filter plate, and the cavity is filled with corrosion and scale inhibitors, and through holes are provided on both the upper and lower sides of the filter plate.

[0007] As a further solution of the present invention, a handle is installed on the front surface of the filter plate, sliders are fixedly installed on both sides of the filter plate, and a slide groove matching with the slider is opened inside the cooling box.

[0008] As a further solution of the present invention, both upper and lower sides of the cooling box are embedded with heat conduction plates, and water cooling plates are evenly and fixedly distributed on the sides where the two groups of heat conduction plates are away from each other.

[0009] As a further solution of the utility model, a filter ball is connected to the water inlet end of the water pump.

[0010] As a further solution of the utility model, a groove is provided on the rear side of the frequency converter, the cooling pipe is arranged in the groove, and the cooling pipe is fixed by a fixing frame, and the cooling pipe is arranged in an M-shaped structure.

[0011] As a further solution of the present invention, cooling fans are provided on both sides of the water cooling plate, and the cooling fans are connected to the inner wall of the cooling box, and the cooling box is provided with second ventilation holes at positions corresponding to the cooling fans.

[0012] As a further solution of the present invention, both the first ventilation hole and the second ventilation hole are configured as an inclined structure.

[0013] In summary, the utility model includes at least one of the following beneficial technical effects:

[0014] First, the utility model records a frequency converter water-cooled heat exchange device, which records that by providing a filter plate in combination with a filter ball, impurities and waste in the coolant can be effectively filtered. At the same time, by adding corrosion inhibitors and scale inhibitors, corrosion caused by deposits on the metal surface can be prevented, thereby extending the service life of the equipment. The formation of deposits such as calcium carbonate and calcium sulfate can be effectively destroyed to prevent them from accumulating on cooling pipes and cooling boxes, which can not only protect the equipment from corrosion, but also improve the operating efficiency of the cooling system and save energy.

[0015] Second, the utility model records a frequency converter water-cooled heat exchange device, which records that by providing a temperature conduction plate, it helps to achieve uniform heat exchange between the coolant and the water-cooled plate, improves the efficiency of heat transfer, and is beneficial to improving the cooling efficiency, so that the equipment can maintain a reasonable temperature under continuous operation. The heat dissipation fan can drive air flow to help take heat away from the water-cooled plate and maintain its normal working temperature.

[0016] Third, the utility model records a frequency converter water-cooled heat exchange device, which records that by providing a first ventilation hole and a second ventilation hole with an inclined structure, external dust and other debris can be effectively prevented from entering the heat sink, thereby preventing equipment performance degradation or failure due to dust accumulation and ensuring stable operation of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the structure of a water-cooled heat exchange device for a frequency converter according to the utility model;

[0019] Figure 2 This is a schematic diagram of the exploded structure of a frequency converter water-cooling heat exchange device of the utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of a heat sink of a frequency converter water-cooling heat exchange device of the utility model;

[0021] Figure 4 This is a schematic diagram of the water cooling plate distribution structure of a frequency converter water cooling heat exchange device of the utility model;

[0022] Figure 5 This is a schematic diagram of the cross-sectional exploded structure of a filter plate of a frequency converter water-cooling heat exchange device of the utility model;

[0023] Figure 6 The utility model is a schematic diagram of the exploded structure of the components of a frequency converter water-cooling heat exchange device.

[0024] Figure numerals: 1. inverter; 2. heat sink; 3. box door; 4. first ventilation hole; 5. cooling box; 6. filter plate; 7. temperature conduction plate; 8. water cooling plate; 9. temperature sensor; 10. water pump; 11. filter ball; 12. cooling pipe; 13. fixing bracket; 14. cooling fan; 15. second ventilation hole. DETAILED DESCRIPTION

[0025] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6A frequency converter water-cooling heat exchange device comprises a frequency converter 1, a heat sink 2 is fixedly connected to the rear side of the frequency converter 1, a door 3 is hingedly connected to the rear surface of the heat sink 2, and a first ventilation hole 4 is provided on the door 3, a cooling box 5 is fixedly installed inside the heat sink 2, a coolant is provided in the cooling box 5, a filter plate 6 is inserted in the cooling box 5, a temperature sensor 9 is installed in the cooling box 5, a water pump 10 is provided inside the cooling box 5, and a water outlet end of the water pump 10 is connected to a cooling pipe 12.

[0026] Preferably, a cavity is provided inside the filter plate 6, and the cavity is filled with a corrosion inhibitor. The filter plate 6 has through holes on both the upper and lower sides. The filter plate 6 can filter impurities and waste in the coolant. When the coolant passes through the filter plate 6, the corrosion inhibitor can effectively destroy the formation of deposits such as calcium carbonate and calcium sulfate, and prevent them from accumulating on the cooling pipe 12 and the cooling box 5.

[0027] Preferably, a handle is installed on the front surface of the filter plate 6, and sliders are fixedly installed on both sides of the filter plate 6. A slide groove matching the slider is opened inside the cooling box 5. The slider matches the slide groove to pull out the filter plate 6, which is convenient for maintenance of the filter plate 6.

[0028] Preferably, both upper and lower sides of the cooling box 5 are embedded with heat conducting plates 7, and the sides of the two groups of heat conducting plates 7 away from each other are evenly and fixedly distributed with water cooling plates 8, and the heat conducting plates 7 help to achieve uniform heat exchange between the coolant and the water cooling plates 8, thereby improving the efficiency of heat transfer and facilitating the improvement of cooling efficiency;

[0029] Preferably, a filter ball 11 is connected to the water inlet end of the water pump 10, and the filter ball 11 can filter the coolant entering the water pump 10 to prevent impurities from clogging the water pump 10;

[0030] Preferably, a groove is provided on the rear side of the frequency converter 1, and the cooling pipe 12 is arranged in the groove, and the cooling pipe 12 is fixed by a fixing frame 13, and the cooling pipe 12 is arranged in an M-shaped structure, and the fixing frame 13 can maintain the stability of the cooling pipe 12, and the M-shaped structure of the cooling pipe 12 can provide a larger surface area, thereby improving the cooling efficiency of the frequency converter 1;

[0031] Preferably, cooling fans 14 are provided on both sides of the water-cooled plate 8, and the cooling fans 14 are connected to the inner wall of the cooling box 2. The cooling box 2 is provided with second ventilation holes 15 at positions corresponding to the cooling fans 14. The cooling fans 14 can effectively improve the air flow efficiency and accelerate the heat dissipation. Together with the second ventilation holes 15, the air circulation is smoother, further improving the cooling effect.

[0032] Preferably, the first ventilation hole 4 and the second ventilation hole 15 are both arranged as an inclined structure. The inclined structure of the first ventilation hole 4 and the second ventilation hole 15 can effectively prevent external dust and other debris from entering the heat dissipation box 2, thereby protecting the internal structure of the equipment and extending the service life of the equipment.

[0033] The working principle of a frequency converter water cooling heat exchange device provided by the utility model is as follows:

[0034] When in use, the filter ball 11 filters the coolant entering the water pump 10, and the filtered coolant enters the cooling pipe 12 through the water pump 10 to cool the inverter 1. The cooled water enters the cooling box 5 through the cooling pipe 12, falls after being filtered by the filter plate 6, and the temperature conduction plate 7 evenly transfers the temperature in the cooling box 5 to the water-cooled plate 8. The cooling fan 14 cools the water-cooled plate 8. The power of the water pump 10 and the speed of the cooling fan 14 can be controlled by the temperature sensor 9 to realize intelligent control. The above is the entire working principle of the utility model.

[0035] Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations or direct or indirect applications may be made to these embodiments without departing from the principles and spirit of the present invention. In other related technical fields, the scope of the present invention is defined by the attached claims and their equivalents, which are equally included in the scope of patent protection of the present invention.

Claims

1. A frequency converter water cooling heat exchange device, characterized in that: include: A frequency converter (1), wherein a heat sink (2) is fixedly connected to the rear side of the frequency converter (1), and a box door (3) is hingedly connected to the rear surface of the heat sink (2), and a first ventilation hole (4) is provided on the box door (3); a cooling box (5) is fixedly installed inside the heat sink (2), and a coolant is provided in the cooling box (5); a filter plate (6) is inserted in the cooling box (5), a temperature sensor (9) is installed in the cooling box (5), and a water pump (10) is provided inside the cooling box (5), and the water outlet end of the water pump (10) is connected to a cooling pipe (12).

2. The inverter water-cooling heat exchange device according to claim 1, characterized in that: The filter plate (6) has a cavity inside, and the cavity is filled with a corrosion and scale inhibitor. The filter plate (6) has through holes on both the upper and lower sides.

3. The inverter water cooling heat exchange device according to claim 1, characterized in that: A handle is installed on the front surface of the filter plate (6), sliders are fixedly installed on both sides of the filter plate (6), and a slide groove matching the slider is opened inside the cooling box (5).

4. The inverter water cooling heat exchange device according to claim 1, characterized in that: The cooling box (5) is embedded with a heat conduction plate (7) on both the upper and lower sides, and water cooling plates (8) are evenly and fixedly distributed on the sides of the two groups of heat conduction plates (7) that are away from each other.

5. The inverter water-cooling heat exchange device according to claim 1, characterized in that: The water inlet end of the water pump (10) is connected to a filter ball (11).

6. The inverter water-cooling heat exchange device according to claim 1, characterized in that: A groove is provided on the rear side of the frequency converter (1), the cooling pipe (12) is arranged in the groove, and the cooling pipe (12) is fixed by a fixing frame (13), and the cooling pipe (12) is arranged in an M-shaped structure.

7. The inverter water-cooling heat exchange device according to claim 4, characterized in that: Both sides of the water cooling plate (8) are provided with cooling fans (14), and the cooling fans (14) are connected to the inner wall of the cooling box (2), and the cooling box (2) is provided with a second ventilation hole (15) at a position corresponding to the cooling fan (14).

8. The inverter water-cooling heat exchange device according to claim 1, characterized in that: The first ventilation hole (4) and the second ventilation hole (15) are both arranged as inclined structures.

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