Three-phase four-bridge-arm inverter with water seepage prevention mechanism

Abstract

The invention belongs to the technical field of inverters, and particularly relates to a three-phase four-bridge-arm inverter with a water seepage prevention mechanism. The three-phase four-bridge-arminverter comprises a bearing mechanism, the bearing mechanism comprises an inverter body, an output end and an input end, the output end and the input end are arranged on the end surface of the inverter body, and a switch is arranged at one end of the inverter body. The two ends of the inverter body are respectively provided with a plurality of circulation holes which are linearly arranged at equal intervals. Second through holes in a switching plate and first through holes in a protective cover are staggered, the first through holes and the second through holes are not communicated, water flow cannot enter the inverter body, air flow circulates through a telescopic pipe, a connecting pipe and an adapter pipe in a fixed pipe under the action of a fan in the inverter body, and normal heatdissipation is guaranteed. When the water level makes contact with a floating plate, the floating plate rises synchronously along with rising of the liquid level, the connecting pipe on the floating plate drives the telescopic pipe to extend upwards, water flow cannot enter the inverter body, normal distribution heat dissipation of the air flow is guaranteed, and the water seepage prevention effect is good.

Description

technical field [0001] The invention belongs to the technical field of inverters, and in particular relates to a three-phase four-bridge-arm inverter with a water seepage prevention mechanism. Background technique [0002] Inverter converts DC power into AC. It consists of inverter bridge, control logic and filter circuit. It is widely used in air conditioners, home theaters, electric grinding wheels, electric tools, sewing machines, DVD, VCD, computers, TVs, washing machines, Range hoods, refrigerators, video recorders, massagers, fans, lighting, etc. In the inverter, the three-phase four-wire inverter provides a zero-sequence current path through the neutral line, which has the ability to carry unbalanced loads and has a simple circuit form. With the advantages of small size and high voltage utilization rate, it has broad application prospects in practice, and has good development prospects in the fields of wind energy, water energy, solar energy, and biomass energy genera...

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Problems solved by technology

[0003] The Chinese patent with the publication number CN207625463U discloses an inverter that is not easy to seepage, which can quickly flow the infiltrated water into the water collection chamber through the inclined channel, and then use the inverted eight-character round hole at the bottom of the water collection chamber to flow out, so that the water It is not easy to penetrate into the inverter, but when the water level is high, the water collecting chamber cannot effectively collect all the water, and the water flow will still enter the inverter body, causing damage to the internal electronic components. The anti-seepage effect has certain limitations

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