CN102892265A - Power electronic equipment, cabinet body thereof and cabinet door of cabinet body - Google Patents

Abstract

The invention provides a power electronic device and its cabinet and cabinet door. The back of the door panel of the cabinet door is provided with an interlayer channel parallel to the upper and lower directions. The interlayer channel constitutes a return channel, and the upper port is connected in series with a fan. The return channel is connected end to end with the heat dissipation air channel formed by the inner space of the cabinet to form a circulation channel. A heat exchanger is arranged in the circulation channel, and a partition for assembling power and electronic equipment is also provided in the cabinet, and a ventilation hole is provided on the partition. , the structure is simpler, it is convenient to maintain the internal device of the cabinet, and the reliability and service life of the power electronic equipment are improved.

Description

Power electronic equipment and its cabinets and cabinet doors

technical field

The invention relates to the field of power electronic equipment. the

Background technique

With the development of the new energy industry, the power level and operating environment requirements of power electronic equipment are becoming more and more stringent. The high power loss of power electronic devices under high power level working conditions will generate a lot of heat, which will make the temperature rise of power electronic devices very high. High, because temperature is one of the important factors that limit the service life of power electronic devices, the higher the device temperature, the shorter its service life, so the heat dissipation performance of power electronic equipment has become one of the important factors affecting the service life of power electronic devices.

A patent document "A Power Electronic Equipment Cooling System" with the application number of 201120069000.9 discloses a power electronic equipment cooling system, including equipment cabinets, liquid-cooled heat exchangers, fans, and heating components installed in the equipment cabinets Installation areas, system air ducts and equipment heating components.

The air inlet end and the air outlet end of the system air duct are connected to the installation area of the heating components to form a circulation channel. The heating components are installed in the installation area of the system heating components. The installation area is isolated, the liquid cooling heat exchanger is installed at the air inlet or outlet of the system air duct or in the system air duct, the fan is installed at the air inlet or outlet of the system air duct or in the system air duct, Or installed at the air inlet end and the air outlet end of the system air duct at the same time, the system air duct is composed of the side wall plate on one side of the equipment cabinet, the partition plate of the equipment cabinet, the bottom plate of the installation area, and the rear vertical plate 1. The rear side wall structure and the door end structure of the equipment cabinet are enclosed.

The complex structure of the equipment makes it inconvenient for maintenance personnel to check the equipment, reducing the service life of the equipment, and the part of the system air duct except the air inlet and outlet is isolated from the installation area of the heating components, making maintenance difficult and increasing The work intensity of maintenance personnel. the

Contents of the invention

The object of the present invention is to provide a power electronic equipment and its cabinet body and cabinet door, which solves the problems of complex structure of the existing power electronic equipment and its cabinet body and difficult maintenance of components inside the cabinet body.

In order to achieve the above object, the technical solution adopted by the present invention is to provide a cabinet door, the back of the door panel of the cabinet door is provided with an interlayer in the vertical direction parallel to the door panel, and the interlayer and the door panel form an interlayer passage in the up and down direction, and the interlayer The upper port of the channel is provided with a fan, and the air outlet of the fan is connected in series with the upper port of the interlayer channel;

The present invention also provides a cabinet body for power electronic equipment, including a cabinet door. The back of the door panel of the cabinet door is provided with a vertical interlayer parallel to the door panel. The interlayer and the door panel form a vertical interlayer channel. The interlayer channel The upper port is provided with a fan, and the air outlet of the fan is connected in series with the upper port of the interlayer channel. The interlayer channel and the inner space of the cabinet form a circulation channel. The cabinet is also provided with two upper and lower ones for assembling power electronic equipment. The partition, the upper partition is located below the upper port of the interlayer passage, the lower partition is located above the lower port of the interlayer passage, and the upper partition and the lower partition are provided with ventilation holes;

The present invention also provides a power electronic device, including a cabinet body, a partition board is arranged above and below the cabinet body, a return channel and a heat dissipation channel are arranged inside the cabinet body, and a heating device is installed in the heat dissipation channel , the return channel is equipped with a fan, the heat dissipation channel and the return channel are connected end to end to form a circulation channel, a heat exchanger is arranged in the circulation channel, and the return channel is set by the door panel and the back of the cabinet The upper and lower passages formed by the upper and lower interlayers parallel to the door panels, the heat dissipation air passage is formed by the inner space of the cabinet, the fan is arranged at the upper end of the return passage, and its air outlet is connected to the backflow passage. The upper port is connected in series, the heat exchanger is arranged on the partition below the cabinet, the partition above the cabinet is arranged below the upper port of the return channel, and the partition below the cabinet is arranged on the Above the lower port of the return channel, the upper partition and the lower partition of the cabinet are provided with ventilation holes.

The beneficial effect that the present invention reaches:

The heat dissipation air duct of the present invention is connected end-to-end by the interlayer space of the cabinet door and the internal space of the equipment cabinet body to form a circulation channel. The door can be disassembled, the internal structure is simpler, the working reliability is improved, the equipment price is reduced, and it is convenient for maintenance personnel to overhaul and repair the internal components of the cabinet, so as to improve the service life. the

Description of drawings

Fig. 1 is the front view of the power electronic equipment of the present invention;

Fig. 2 is a side view of the power electronic device of the present invention;

3 is a top view of the power electronic device of the present invention;

Fig. 4 is a schematic diagram of the wind direction of the power electronic equipment of the present invention;

Fig. 5 is the schematic diagram of heat exchanger of the present invention;

Fig. 6a is a top view of the circulation channel structure of the present invention;

Fig. 6b is a bottom view of the circulation channel structure of the present invention;

Fig. 6c is a front view of the circulation channel structure of the present invention;

Fig. 6d is a side view of the circulation passage structure of the present invention.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings.

Figure 1 is a front view of the power electronic equipment and its cabinet of the present invention, and Figure 2 is a side view of the power electronic equipment and its cabinet of the present invention, as shown in Figures 1 and 2, the power electronic equipment cabinet is equipped with a fan 1. Return channel 2 and heat exchanger 3.

In this embodiment, the return channel 2 is a channel formed by the cabinet door panel and the interlayer in the upper and lower directions parallel to the door panel arranged on the back of the cabinet body. The air outlet of the fan 1 is connected in series with the upper port of the return channel 2. Each is equipped with a partition, the upper partition is set below the upper port of the return channel 2, the lower partition is located above the lower port of the return channel 2, and the heat exchanger 3 is installed on the partition below the cabinet. The space constitutes a heat dissipation channel, and a heating device is installed in the heat dissipation channel, and the heating device is installed on the upper partition of the cabinet body or the area between the upper partition and the lower partition.

Fig. 3 is a top view of the power electronic equipment and its cabinet of the present invention, 1 is a fan, 2 is a return channel, and 3 is a heat exchanger.

Fig. 4 is a schematic view of the wind direction of the present invention, as shown in Fig. 4, the return channel 2 is connected end to end with the heat dissipation channel to form a circulation channel.

Fig. 5 is a schematic diagram of the heat exchanger of the present invention. As shown in Fig. 5, the heat exchanger 3 has an air inlet and an air outlet, and the air inlet and the air outlet are connected to form an air duct.

Fig. 6a is a top view of the circulation channel structure of the present invention, Fig. 6b is a bottom view of the circulation channel structure of the present invention, Fig. 6c is a front view of the circulation channel structure of the present invention, and Fig. 6d is a side view of the circulation channel structure of the present invention, with shadows in the figure Some are loop channels.

In this embodiment, when the power electronic equipment is working, the hot air generated by the heat-generating devices installed in the heat dissipation channel first enters the fan 1, and then the fan 1 transports the hot air from the upper port of the return channel 2 to the The lower port of the return channel 2 flows into the heat dissipation channel, flows through the air channel of the heat exchanger 3 in the heat dissipation channel, and flows out from its air outlet. The cooled hot air passes through the heating device again, and then is transported to the top of the cabinet again The fan 1 is used, so the air in the cabinet circulates in the cabinet through the fan 1, the heat exchanger 3 and the return channel 2, and plays the role of heat dissipation.

The door panel of the cabinet door in this embodiment and the interlayer in the up-and-down direction parallel to the door panel arranged on the back form a mezzanine passage, and a fan is connected in series to the upper port of the interlayer passage. In other embodiments, the cabinet door can be directly provided with a hollow channel in the up-and-down direction inside the door panel.

In this embodiment, the number of heat exchangers 3 is 3 groups, and they are installed on the partition below the cabinet. In other embodiments, heat exchangers can be installed on the partition above and below the cabinet at the same time. The air inlet and the air outlet of the heat exchanger are connected in series, and the number of heat exchangers can be increased or decreased according to the heat generation of different components in the cabinet.

The number of fans set in this embodiment is 2 groups, and they are installed on the upper port of the return channel. According to the needs, in other implementations, fans can be installed at the lower port of the return channel. The air outlet of the fan and the air inlet of the heat exchanger It can be connected in series, and the size of the return channel and the number of fans can be changed according to the size of the cabinet.

Claims (7)

1. A cabinet door of a power electronic equipment cabinet body, characterized in that the back of the door panel is provided with an interlayer in the up-down direction parallel to the door panel, the interlayer and the door panel form an up-down interlayer passage, and the upper port of the interlayer passage is provided with A fan, the air outlet of the fan is connected in series with the upper port of the interlayer channel. 2. A cabinet body for power electronic equipment, comprising a cabinet door, characterized in that, the back of the door panel of the cabinet door is provided with an interlayer in the up-down direction parallel to the door panel, and the interlayer and the door panel form an interlayer channel in the up-down direction. The upper port of the interlayer channel is provided with a fan, and the air outlet of the fan is connected in series with the upper port of the interlayer channel, and the interlayer channel and the inner space of the cabinet form a circulation channel. 3. The cabinet body of power electronic equipment according to claim 2, wherein a partition for assembling power electronic equipment is provided above and below the cabinet, and the upper partition is arranged in the interlayer channel Below the upper port, the lower partition is arranged above the lower port of the interlayer channel. 4 . The cabinet body of power electronic equipment according to claim 3 , wherein the upper partition and the lower partition are provided with ventilation holes. 5. A power electronic device, comprising a cabinet body, a partition board is provided above and below the cabinet body, a return channel and a heat dissipation channel are provided inside the cabinet body, and a heating device is installed in the heat dissipation channel, so The return channel is equipped with a fan, the heat dissipation channel and the return channel are connected end to end to form a circulation channel, and a heat exchanger is arranged in the circulation channel, and it is characterized in that, The return channel is a channel in the up and down direction formed by the door panel of the cabinet and the interlayer in the up and down direction parallel to the door panel arranged on the back side, the heat dissipation air channel is formed by the inner space of the cabinet, and the fan is provided At the upper end of the return channel, the air outlet is connected in series with the upper port of the return channel, and the heat exchanger is arranged on the partition below the cabinet. 6. The power electronic device according to claim 5, wherein the partition above the cabinet is arranged below the upper port of the return channel, and the partition below the cabinet is arranged at the return channel above the lower port. 7. The power electronic device according to claim 6, wherein ventilation holes are provided on the upper and lower partitions of the cabinet.

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