Inverter heat-dissipation device and inverter

Abstract

An inverter heat-dissipation device and an inverter are provided. The inverter heat-dissipation device includes a centrifugal fan, a first heat radiator, a second heat radiator and an air channel. A first air outlet is arranged at one end of the air channel and a second air outlet is arranged at the other end of the air channel. The first heat radiator is arranged in the air channel and is in communication with the first air outlet. The second heat radiator is arranged in the air channel and is in communication with the second air outlet. The centrifugal fan is arranged in the air channel and is disposed between the first heat radiator and the second heat radiator. An air inlet matching the centrifugal fan in size is arranged on the air channel. A first opening is arranged on the air channel; and a second opening is arranged on the air channel.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]The present application claims priority to Chinese Patent Application No. 201410508020.X, entitled “INVERTER HEAT-DISSIPATION DEVICE AND INVERTER”, filed on Sep. 28, 2014 with the State Intellectual Property Office of the PRC, the disclosure of which being incorporated herein by reference in its entirety.FIELD[0002]The present disclosure relates to the technical field of inverter, and in particular to an inverter heat-dissipation device and an inverter.BACKGROUND[0003]An air-cooled inverter generally dissipates heat via a unidirectional straight-through air channel which has an air inlet at one end and an air outlet at the other end as shown in FIG. 1. An axial fan is typically located at the air inlet of the air channel. Cold air is blown into the air channel by the axial fan, and the air flows through a first heat radiator and a second heat radiator for heat exchange. After the heat exchange, hot air flows out through the air outlet of ...

AI Technical Summary

Benefits of technology

This patent describes an inverter heat-dissipation device and inverter that aim to extend the life of a centrifugal fan, improve heat-dissipation, and enhance the performance of the inverter. The device has a centrifugal fan placed between two heat radiators, with air drawn in at the middle and flowing out through two air outlets at the ends of the air channel, resulting in a shorter air channel length and increased width, which reduces pressure loss and load on the fan, leading to longer service life. The air flow through each heat radiator is relatively cold due to the hot air not flowing through the heat radiator, which improves its heat-dissipation effect and reduces the temperature difference between the two heat radiators. Overall, this patent offers a technical solution for improved heat-dissipation and performance of the inverter.

Problems solved by technology

Since at least two heat radiators are provided in the unidirectional straight-through air channel, a length of the unidirectional straight-through air channel (a distance from the air inlet to the air outlet) is long, which results in a great pressure loss along the unidirectional straight-through air channel and a heavy load on the fan, thereby reducing the service life of the fan.

As the hot air continuously flows through the downstream heat radiator, the heat-dissipation effect of the downstream heat radiator becomes increasingly worse, and the temperature of the downstream heat radiator itself becomes increasingly higher, thereby resulting in a great difference between temperatures of the downstream heat radiator and the upstream heat radiator, and reducing the performance of an inverter including the heat radiator.

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