High-power outdoor heat dissipation machine cabinet

Abstract

The invention provides a high-power outdoor heat dissipation machine cabinet. The high-power outdoor heat dissipation machine cabinet comprises a core heat dissipation region and an isolation type heat dissipation region, wherein a fin wind channel part of a module heat dissipater is externally arranged in the core heat dissipation region, and modules and single boards are arranged in the isolation type heat dissipation region; a ceiling adopts a lower air inflow manner, so that the waterproof and dustproof functions are simultaneously enhanced; an air flue is ventilated and cooled by virtue of positive pressure blowing of a centrifugal fan, and a rectifying grid is adopted, so that the problem that the axial air flow of the centrifugal fan is not uniform is solved; a device with a relatively protection grade is placed in the isolation type heat dissipation region, an air-heat exchanger is mounted on the rear side of the machine cabinet, and a wind channel partition board is arranged between an internal circulating air inlet and outlet, a heat dissipation path is planned as a double-'U'-shaped loop, heat is transferred to an external heat sink through a copper coil by virtue of thetemperature difference between hot air in the cabinet and an external temperature of the cabinet, air sequentially flows in and out of the whole machine, and the draught fan is arranged at the top ofthe machine cabinet, so that the working temperature is low, and the reliability is high; positive pressure dust prevention is realized in the core heat dissipation region, key devices in the cabinetare not in contact with the environment, so that the disadvantages of air cooling are furthest evaded; and by virtue of a low-cost air flue design, the environmental adaptive capability of an outdoormachine is improved.

Description

technical field [0001] The invention relates to the technical field of heat dissipation of a high-power outdoor machine, in particular to a high-power outdoor heat dissipation cabinet. Background technique [0002] With the growing photovoltaic market, high-power photovoltaic inverter outdoor units have emerged as the times require. Facing complex and diverse external environments, such as salt fog, sand, rain, condensation and other special occasions, the inverter power unit in the cabinet, How to achieve reliable heat dissipation under high protection conditions for low-protection devices such as DC circuit breakers, bus capacitors, AC contactors, and AC circuit breakers. The heat dissipation design of the module has a difference between exhaust and blast. The exhaust method has a great impact on the life of the fan. The blow method needs to solve the problem of uniform temperature of the inverter module. How to achieve efficient uniform temperature heat dissipation in a m...

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Problems solved by technology

[0009] In order to overcome the above-mentioned problems in the prior art, the object of the present invention is to provide a high-power outdoor heat dissipation cabinet, which can effectively improve the dustproof, waterproof, and salt spray-proof capabilities of the cabinet, and effectively solve the unevenness of key components under the condition of positive pressure ventilation and heat dissipation. temperature problem

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