CN204180462U - The combined heat radiating system of high-power inverter - Google Patents

Abstract

The utility model relates to a compound heat dissipation system of a high-power inverter, which includes an inverter installed in a cabinet. The heat dissipation system includes a natural heat dissipation module of the cabinet, an independent heat dissipation module of the inverter and a The active heat dissipation module of the fan; the natural heat dissipation module includes the cabinet ventilation window on the front side of the cabinet, the cabinet ventilation channel on the side and the cabinet ventilation cover on the top surface; the independent heat dissipation module includes the inverter on the lower front side of the inverter. Inverter ventilation window, the side of the inverter has an inverter ventilation channel, the top surface of the inverter has an inverter ventilation cover, the inverter ventilation cover communicates with the inside of the inverter, and its front side has a ventilation hole; the active cooling module includes a plurality of fans installed on the upper rear side of the cabinet, a temperature sensor and a logic control module are installed on the inverter, the temperature sensor detects the temperature of the inverter, and the logic control module controls the start and stop of the fan motor. The utility model has the characteristics of good heat dissipation effect and low energy consumption.

Description

Composite heat dissipation system for high-power inverter

technical field

The utility model relates to a high-power frequency conversion cabinet, in particular to a cooling system for a high-power inverter.

Background technique

With the rapid development of industrial high-power power electronic devices, the capacity of the inverter and the switching frequency of the device are increasing rapidly, and the loss of the switching tube is also increasing. The inverter is installed in the cabinet. Practical experience shows that the stability of inverter operation depends on whether its heat generation is fully diffused. When the switching frequency is low, the on-state consumption of the IGBT in the inverter accounts for the main part of the total consumption. When the switching frequency increases rapidly, the proportion of switching consumption to the total loss rises rapidly. The temperature will likely reach or even exceed the junction temperature, and the device will be damaged. Therefore, the design of the heat dissipation system of the high-power inverter is the main condition for its safe and reliable operation.

Utility model content

The applicant conducts research and design for high-power inverters, and provides a composite heat dissipation system for high-power inverters, which effectively improves the heat dissipation of the inverter through multiple heat dissipation, and ensures its stable and safe operation .

The technical scheme adopted in the utility model is as follows:

A composite cooling system for high-power inverters, including inverters installed in cabinets, the cooling system includes natural cooling modules for cabinets, independent cooling modules for inverters, and active cooling for controlling fans on the cabinets module;

The heat dissipation structure of the natural heat dissipation module is as follows: the front side of the cabinet has a plurality of cabinet ventilation windows, the side of the cabinet has a cabinet ventilation channel, the top surface of the cabinet has a cabinet ventilation hood, and the cabinet ventilation hood passes through the cabinet. The through hole on the top is connected with the inside of the cabinet. There are ventilation slots on the side of the ventilation hood of the cabinet. The natural wind enters from the ventilation window of the cabinet and flows out from the side ventilation slot of the ventilation hood of the cabinet along the ventilation channel of the cabinet;

The heat dissipation structure of the independent heat dissipation module is as follows: the lower part of the front side of the inverter has an inverter ventilation window, the side of the inverter has an inverter ventilation channel, and the top surface of the inverter has an inverter ventilation cover , The inverter ventilation hood communicates with the inside of the inverter, and its front side has ventilation holes. The natural wind enters through the inverter ventilation window and flows out from the ventilation holes of the inverter ventilation hood along the inverter ventilation channel;

The heat dissipation structure of the active heat dissipation module is as follows: a plurality of fans are installed on the upper rear side of the cabinet, a temperature sensor and a logic control module are installed on the inverter, the temperature sensor detects the temperature of the inverter, and the logic control module controls the start of the fan. stop.

As a further improvement of the above technical solution:

The side section of the ventilation cover of the inverter is a trapezoidal structure, and an inclined deflector is provided on the rear side thereof.

The beneficial effects of the utility model are as follows:

The utility model combines the natural heat dissipation of the cabinet, the independent heat dissipation of the inverter and the active heat dissipation of the fan to realize multiple heat dissipation, greatly improve the heat dissipation effect, and reduce energy consumption.

Description of drawings

Fig. 1 is the heat dissipation structural diagram of the utility model.

Fig. 2 is a heat dissipation structure diagram of the cabinet of the present invention.

FIG. 3 is a heat dissipation structure diagram of the inverter of the present invention.

Fig. 4 is a structural principle diagram of the active heat dissipation of the present invention.

Fig. 5 is a schematic diagram of heat dissipation of the present invention.

In the figure: 1. Cabinet; 11. Cabinet ventilation window; 12. Cabinet ventilation channel; 13. Through hole; 2. Inverter; 21. Inverter ventilation window; 22. Inverter ventilation channel; 3. Cabinet ventilation hood; 31, ventilation groove; 4, fan; 5, inverter ventilation cover; 51, ventilation hole; 52, deflector; 6, motor; 7, temperature sensor; 8, logic control module.

Detailed ways

Below in conjunction with accompanying drawing, illustrate the specific embodiment of the present utility model.

As shown in Figure 1, the composite heat dissipation system of the high-power inverter in this embodiment includes the inverter 2 installed in the cabinet 1, the heat dissipation system includes the natural heat dissipation module of the cabinet 1, the independent heat dissipation module of the inverter 2 A cooling module and an active cooling module for controlling the fan 4 on the cabinet 1.

As shown in Figure 2, the heat dissipation structure of the natural heat dissipation module is as follows: the front side of the cabinet 1 has a plurality of cabinet ventilation windows 11, the side of the cabinet 1 has cabinet ventilation channels 12, and the top surface of the cabinet 1 has a cabinet Ventilation hood 3, the cabinet body ventilation hood 3 communicates with the interior of the cabinet 1 through the through hole 13 on the top of the cabinet 1, the side of the cabinet body ventilation hood 3 has ventilation slots 31, the natural wind enters from the cabinet body ventilation window 11, and flows along the cabinet body. The body ventilation channel 12 flows out from the side ventilation groove 31 of the cabinet ventilation hood 3 . In the cabinet 1, the hot air is discharged directly from bottom to top, and the heat dissipation space is increased through the top air cover, and the heat dissipation efficiency and effect are improved.

As shown in Figure 3, the heat dissipation structure of the independent heat dissipation module is as follows: the lower part of the front side of the inverter 2 has an inverter ventilation window 21, the side of the inverter 2 has an inverter ventilation channel 22, and the side of the inverter 2 has an inverter ventilation channel 22. There is an inverter ventilation cover 5 on the top surface, and the inverter ventilation cover 5 communicates with the inside of the inverter 2. Its front side has a ventilation hole 51, its side section is a trapezoidal structure, and its rear side has an inclined guide. Flow plate 52; natural wind enters from the inverter ventilation window 21, flows out from the ventilation hole 51 of the inverter ventilation cover 5 along the inverter ventilation channel 22, and diffuses from the cabinet body ventilation cover 3 to the outside of the cabinet 1. The natural wind flows into the inverter 2, adding turbulent flow to the air flow field to enhance the convective heat transfer effect of the system.

As shown in Figure 4, the heat dissipation structure of the active heat dissipation module is as follows: a plurality of fans 4 are installed on the upper rear side of the cabinet 1, a temperature sensor 7 and a logic control module 8 are installed on the inverter 2, and the logic control module 8 and the fans 4 The drive circuit is connected, and the temperature sensor 7 detects the temperature of the inverter 2. When the inverter temperature T>45℃~50℃, the logic control module 8 drives the fan 4 to increase hot air convection for heat dissipation and cooling to prevent the inverter 2 from Can not work due to overheating, effectively saving energy.

As shown in Figure 5, it is a schematic diagram of the air flow of the composite heat dissipation system of the present invention. The utility model adopts the combination of natural heat dissipation, independent heat dissipation and active heat dissipation, which greatly improves the heat dissipation effect and avoids the situation that the inverter stops working due to overheating .

The above-mentioned embodiments are preferred implementation modes of the present utility model, which are only used to facilitate the description of the present utility model, and are not intended to limit the present utility model in any form. Anyone with ordinary knowledge in the technical field, if they do not depart from this utility model Within the scope of the technical features mentioned in the utility model, the equivalent embodiments that make partial changes or modifications made by using the technical content disclosed in the utility model, and do not deviate from the technical features of the utility model, still belong to the technical features of the utility model In the range.

Claims (2)

1. the combined heat radiating system of a high-power inverter, comprise the inverter (2) be installed in rack (1), it is characterized in that: this cooling system comprises the natural heat dissipation module of rack (1), the independent radiating module of inverter (2) and the active heat removal module for controlling the upper fan (4) of rack (1);

The radiator structure of described natural heat dissipation module is: the front side of rack (1) is with multiple cabinet ventilating window (11), the side of rack (1) is with cabinet air duct (12), the end face of rack (1) is with cabinet ventilator cowling (3), cabinet ventilator cowling (3) is communicated with the inside of rack (1) by the through hole (13) at rack (1) top, the side of cabinet ventilator cowling (3) is with ventilation slot (31), natural wind enters from cabinet ventilating window (11), flows out along cabinet air duct (12) from the side-vented groove (31) of cabinet ventilator cowling (3);

The radiator structure of described independent radiating module is: inverter (2) lower front is with inverter ventilating window (21), the side of inverter (2) is with inverter air duct (22), the end face of inverter (2) is with inverter ventilator cowling (5), inverter ventilator cowling (5) is communicated with the inside of inverter (2), its leading flank is with ventilation hole (51), natural wind enters from inverter ventilating window (21), and the ventilation hole (51) along inverter air duct (22) from inverter ventilator cowling (5) flows out;

The radiator structure of described active heat removal module is: the top trailing flank device of rack (1) has multiple fan (4), the upper device of inverter (2) has temperature sensor (7) and Logic control module (8), temperature sensor (7) detects the temperature of inverter (2), and Logic control module (8) controls the start and stop of the motor (6) of fan (4).

2. the combined heat radiating system of high-power inverter according to claim 1, is characterized in that: the lateral section of described inverter ventilator cowling (5) is trapezium structure, and side is with the baffler (52) tilted thereafter.