Air-cooled heat dissipation frequency converter container

Abstract

The air-cooled heat dissipation frequency converter container has the advantages that the heat generated by the heating device is taken away under the air draft of the heat dissipation fan, when the external environment temperature is high, the air conditioner is started to cooperate with the heat dissipation fan to dissipate heat of the frequency converter, the heat dissipation of the frequency converter meets the requirements, and the frequency converter stably operates under various different environments.

Description

Technical Field

[0001] This utility model relates to a container for air-cooled frequency converters, and more specifically, to a container for air-cooled frequency converters. Background Technology

[0002] For frequency converters with rated power below 10kV to 1000kW or below 6kV to 560kW, they are typically installed indoors. Since indoor air is generally not mobile, natural air cooling is often insufficient to adequately address the inverter's heat dissipation needs; therefore, forced air cooling is necessary. Specifically, forced air cooling uses a fan to increase the airflow rate inside the equipment, thereby achieving effective heat dissipation and cooling the frequency converter.

[0003] For inverters installed indoors, to prevent heat accumulation during indoor circulation, each fan is equipped with an independent air duct to directly exhaust hot air outdoors, while cool air is introduced through the room's air inlet, forming an indoor air-cooled circulation system. However, in practical applications, due to limitations in customer room size, it is impossible to install forced-air-cooled inverters indoors; or in remote outdoor environments, forced-air-cooled inverters cannot be directly deployed. Therefore, the conditions for installing inverters cannot be met when customer room size is limited or in remote areas. To address this, this paper proposes an air-cooled inverter container. Summary of the Invention

[0004] In order to overcome the shortcomings of the above-mentioned technical problems, this utility model provides an air-cooled inverter container.

[0005] This utility model discloses a container for an air-cooled inverter, comprising a container body and an inverter. The interior of the container body is a receiving cavity, and the inverter is installed in the receiving cavity of the container body. A cooling fan and a cooling duct are provided on the top of the inverter, with the cooling fan located in the cooling duct. The container body is characterized by having a bottom air inlet communicating with the outside, and an upper air outlet communicating with the outside at the top. The cooling duct on the inverter is connected to the upper air outlet. An outdoor air conditioning unit and an indoor air conditioning unit are installed on the container body. An air conditioning bracket is fixed to the outer wall of the container body, the outdoor air conditioning unit is fixed to the air conditioning bracket, and the indoor air conditioning unit is located in the receiving cavity and fixed to the inner wall of the container body.

[0006] The air-cooled inverter container of this utility model has an air outlet facing downwards in the upper air outlet duct, and an L-shaped air duct rain shield is provided above the fixed part of the upper air outlet duct and the container body. The air duct rain shield is fixed to the outer wall of the container body.

[0007] The present invention relates to an air-cooled inverter container, wherein a rear door is provided on the rear side of the container and a front door is provided on the front side of the container. The inverter enters the receiving cavity through the rear door, and maintenance personnel enter the receiving cavity through the front door.

[0008] The air-cooled inverter container of this utility model has a filter screen below the bottom air inlet to prevent foreign objects from entering.

[0009] The present invention relates to an air-cooled inverter container, wherein an insulation layer is fixed on the inner wall of the container to prevent heat exchange between the container cavity and the outside environment.

[0010] The air-cooled inverter container of this utility model has lifting holes at the four corners of the upper part of the container.

[0011] The beneficial effects of this utility model are as follows: The air-cooled inverter container of this utility model includes a container body and an inverter. The inverter is housed within the container's cavity, and its cooling duct is connected to the upper air outlet duct at the top of the container. A bottom air inlet is located at the bottom of the container. Simultaneously, an outdoor air conditioning unit and an indoor air conditioning unit are respectively installed outside the container and inside the cavity. This allows for direct installation of the container in outdoor environments, especially in areas with limited room size or remote locations, with the inverter installed within the container's cavity. During inverter operation, the cooling fan draws air from the container... Under the influence of airflow, outside air enters the enclosure through the bottom air inlet, then enters the inverter, and finally exits through the cooling duct and the top air outlet. As the air flows through the inverter, it carries away the heat generated by the heat-generating components, ensuring the stable operation of the inverter. When the ambient temperature is high and the forced ventilation of the cooling fan alone is insufficient to cool the inverter, the outdoor and indoor units of the air conditioner are turned on to lower the ambient temperature inside the enclosure. This, combined with the cooling fan, helps to cool the inverter, ensuring that the inverter's cooling requirements are met and that the inverter operates stably in various environments.

[0012] Furthermore, by installing an L-shaped rain shield above the fixed part of the upper air outlet duct and the outer wall of the enclosure, external rainfall can be effectively prevented from entering the enclosure, thus achieving effective protection for the enclosure and the internal components.

[0013] Furthermore, by setting a small front door and a large rear door on the front and rear sides of the enclosure respectively, the inverter is installed by entering the housing through the rear door during installation; and maintenance personnel enter through the small front door during use to inspect or maintain the inverter.

[0014] Furthermore, an insulation layer is installed on the inner wall of the enclosure, which can effectively prevent heat exchange between the inside of the enclosure and the external environment, which is conducive to maintaining a low temperature environment in the cavity when the air conditioner is cooling down; at the same time, the insulation layer can also reduce the impact of direct sunlight on the internal temperature, which is conducive to maintaining the internal environment of the enclosure. Attached Figure Description

[0015] Figure 1 This is a front view of the air-cooled inverter container of this utility model. Figure 2 This is a right view of the air-cooled inverter container of this utility model; Figure 3 This is a left view of the air-cooled inverter container of this utility model; Figure 4 This is a top view of the air-cooled inverter container of this utility model; Figure 5 This is a bottom view of the container for the air-cooled inverter of this utility model. Figure 6 , Figure 7 All of these are perspective views of the air-cooled inverter container of this utility model; Figure 8 A top view of the air-cooled inverter container of this utility model with the top of the container removed; Figure 9 This is a perspective view of the air-cooled inverter container of this utility model with the top of the container removed.

[0016] In the diagram: 1. Housing, 2. Inverter, 3. Housing cavity, 4. Bottom air inlet, 5. Top air outlet, 6. Heat dissipation duct, 7. Air conditioner outdoor unit, 8. Air conditioner indoor unit, 9. Air conditioner bracket, 10. Rear door, 11. Front small door, 12. Air duct rain shield, 13. Hanging hole, 14. Filter screen, 15. Bottom frame. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] like Figures 1 to 5 As shown, the front view, right view, left view, top view, and bottom view of the air-cooled inverter container of this utility model are given respectively. Figure 6 and Figure 7 Its 3D diagram is given. Figure 8 and Figure 9The three-dimensional views of the container with the top of the container removed are given. The air-cooled inverter container shown consists of a container 1 and an inverter 2. The interior of the container 1 is a housing cavity 3. The inverter 2 is installed in the housing cavity 3. The top of the inverter 2 is equipped with a cooling fan and a cooling duct 6. The cooling fan is located in the cooling duct 6. The cooling fan dissipates heat from heat-generating components such as transformers and IGBT power devices in the inverter by drawing air.

[0019] The bottom of the box 1 shown has a bottom air inlet 4, which communicates with the outside, so that outside air can enter the receiving cavity 3 of the box 1 through the bottom air inlet 4. The upper end of the box 1 shown has an upper air outlet 5, which communicates with the heat dissipation air duct 6. The air outlet of the upper air outlet 5 is located outside the box 1 and faces downward to prevent rainwater from entering.

[0020] In this way, under the exhaust action of the cooling fan, the cooler outside air enters the housing cavity 3 through the bottom air inlet 4, then enters the inverter 2, and finally exits through the cooling air duct 6 and the upper air outlet duct 5 into the outside environment. As the air flows through the inverter 2, it carries away the heat generated by heat-generating components such as transformers and IGBT power devices, so as to ensure the stable operation of the inverter 2.

[0021] However, when the ambient air temperature is high (e.g., above 30°C), forced air cooling by the cooling fan may not be sufficient to meet the heat dissipation requirements of the inverter 2. Therefore, an outdoor air conditioner unit 7 and an indoor air conditioner unit 8 are installed on the housing 1. An air conditioner bracket 9 is fixed to the outer wall of the housing 1, with the outdoor unit 7 fixed to the bracket 9 and the indoor unit 8 fixed to the inner wall of the housing 1, meaning the indoor unit 8 is located within the housing cavity 3 of the housing 1. In this way, the air in the housing cavity 3 of the housing 1 can be cooled by the action of the outdoor unit 7 and the indoor unit 8.

[0022] Therefore, when forced air cooling by the cooling fan alone cannot meet the heat dissipation requirements of inverter 2, the outdoor unit 7 and indoor unit of the air conditioner are turned on to lower the air temperature in the housing 3. After the air temperature in housing 3 is lowered, the air temperature entering inverter 2 is also lower than the outside air temperature. Thus, under the exhaust effect of the cooling fan, the air temperature entering inverter 2 is also relatively low, meeting the heat dissipation requirements of inverter 2 and ensuring its heat dissipation even when the outside ambient temperature is relatively high, thereby ensuring the stable operation of inverter 2.

[0023] To prevent rainwater from entering the receiving cavity 3 of the housing 1, an L-shaped duct rain shield 12 is provided above the connection between the upper air outlet duct 5 and the outer surface of the housing 1. The groove of the duct rain shield 12 faces upward, so that external rainwater flows into the groove of the duct rain shield 12 and is guided to both ends to flow down, thereby preventing rainwater from entering the receiving cavity 3 of the housing 1.

[0024] To facilitate access for the inverter 2 and maintenance personnel to the housing 3, a small front door 11 and a large rear door 10 are respectively provided on the front and rear sides of the enclosure 1. During installation, the inverter 2 enters the housing 3 through the large rear door 10. Later, when the inverter 2 is in use, maintenance personnel enter the housing 3 through the small front door 11 to inspect and maintain the inverter 2. To prevent foreign objects from entering the housing 3, a filter screen 14 is installed on the bottom air inlet 4 as outside air enters through it.

[0025] The bottom of the enclosure 1 shown is equipped with a bottom frame 15 to ensure good strength. The bottom frame 15 is welded together from multiple horizontal and vertical beams. To prevent the air in the containment cavity 3 from exchanging heat with the outside air through the non-bottom air inlet 4, an insulation layer is provided inside the enclosure 1. The insulation layer also reduces the impact of direct sunlight on the internal temperature. To facilitate the hoisting of the enclosure 1, hoisting holes 13 are provided at each of the four corners of the enclosure 1 shown.

[0026] The enclosure 1 shown is constructed of high-quality steel, possessing excellent corrosion resistance and wind resistance, enabling it to adapt to various harsh environmental conditions and ensuring the safe and stable operation of the frequency converter 2. The frequency converter 2 requires no additional structural adjustments; it enters the container directly through the rear door of enclosure 1 and is installed in its designated position. After the frequency converter 2 is in place, a top-mounted cooling fan and cooling duct 6 are installed. The cooling duct 6 allows the drawn-in air to be exhausted outside the enclosure 1, thus maintaining the cooling effect of the frequency converter 2.

[0027] As can be seen, this utility model's air-cooled inverter container solves the size limitations of customer rooms and the constraints faced when constructing infrastructure in remote areas. Through the innovative adoption of a containerized design concept, the inverter can be flexibly deployed and installed within limited space. The built-in air-cooling system ensures stable operation of the inverter under various environmental conditions, unaffected by external factors such as temperature and humidity. Furthermore, this invention not only successfully solves the limitations faced during inverter installation but also opens up new possibilities for the widespread application of inverters, providing a more flexible and efficient solution for related industries.

Claims

1. A container for an air-cooled frequency converter, comprising a container body (1) and a frequency converter (2), wherein the interior of the container body is a receiving cavity (3), and the frequency converter is installed in the receiving cavity of the container body; a cooling fan and a cooling duct (6) are provided on the top of the frequency converter, and the cooling fan is disposed in the cooling duct; characterized in that: The bottom of the enclosure has a bottom air inlet (4) that communicates with the outside, and the top of the enclosure has an upper air outlet (5) that communicates with the outside. The heat dissipation air duct (6) on the inverter is connected to the upper air outlet (5). The enclosure is equipped with an outdoor air conditioner (7) and an indoor air conditioner (8). An air conditioner bracket (9) is fixed on the outer wall of the enclosure. The outdoor air conditioner is fixed on the air conditioner bracket, and the indoor air conditioner is located in the receiving cavity and fixed on the inner wall of the enclosure.

2. The air-cooled inverter container according to claim 1, characterized in that: The air outlet of the upper air outlet (5) faces downward, and an L-shaped air outlet rain shield (12) is provided above the fixed part of the upper air outlet and the box body. The air outlet rain shield is fixed to the outer wall of the box body.

3. The air-cooled inverter container according to claim 1 or 2, characterized in that: The rear side of the enclosure (1) is provided with a rear door (10), and the front side of the enclosure is provided with a front door (11). The inverter (2) enters the receiving cavity (3) through the rear door, and the maintenance personnel enter the receiving cavity through the front door.

4. The air-cooled inverter container according to claim 1 or 2, characterized in that: A filter screen (14) is provided below the bottom air inlet (4) to prevent foreign objects from entering.

5. The air-cooled inverter container according to claim 1 or 2, characterized in that: The inner wall of the box (1) is fixed with an insulation layer to prevent heat exchange between the containment cavity (3) and the outside.

6. The air-cooled inverter container according to claim 1 or 2, characterized in that: The box (1) has four lifting holes (13) at the four corners of the upper part.

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