Ventilation and heat dissipation device

Abstract

The invention belongs to the technical field of ventilation devices, and relates to a ventilation device for power transmission and distribution devices. A ventilation and heat dissipation device comprises a volute assembly, the volute assembly comprises a draught fan assembly and a volute, the draught fan assembly is covered with the volute, and an air outlet is formed at the lower portion of thevolute. According to the ventilation and heat dissipation device, the air inlet shutters are adopted, the blades are arranged in an overlapped mode, and the waterproof performance is improved; airflow short circuit is avoided, and the ventilation and heat dissipation efficiency is improved; the space utilization rate is improved; and the ventilation and heat dissipation costs are reduced. The volute assembly adopts a mechanical self-sealing protection structure, so that the safety and the reliability are improved, a fan device air valve is not needed, the ventilation cost is reduced, and theprotection level of an enclosure structure is improved.

Description

technical field [0001] The invention belongs to the technical field of ventilation equipment, and relates to a ventilation and heat dissipation device for power transmission and distribution equipment. Background technique [0002] Various power transformation and distribution and power electronic equipment use and performance improvement, large heat generation, leading to ventilation and heat dissipation problems have always been difficult problems restricting its development. The problems mainly focus on the following aspects: due to limited space, The air inlet and outlet are often installed on the same panel, resulting in air short circuit; the protection level is getting higher and higher, and the use of filters causes the actual air output of the ventilation equipment to be greatly reduced; the air inlet and outlet positions are not set properly, resulting in low ventilation and heat dissipation efficiency, causing waste of energy. [0003] With the advancement of new...

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Problems solved by technology

[0002] Various power transformation and distribution and power electronic equipment use and performance improvement, large heat generation, leading to ventilation and heat dissipation problems have always been difficult problems restricting its development. The problems mainly focus on the following aspects: due to limited space, The air inlet and outlet are often installed on the same panel, resulting in air short circuit; the protection level is getting higher and higher, and the use of filters causes the actual air output of the ventilation equipment to be greatly reduced; the air inlet and outlet positions are not set properly, resulting in low ventilation and heat dissipation efficiency, causing waste of energy

[0003] With the advancement of new infrastructure projects, more and more traditional substations or prefabricated cabins are put into use. According to national industry standards, accidental smoke exhaust and ventilation are one of the essential functions. Currently, this function is mostly implemented The air valve structure of the fan device, the air outlet device provides ventilation power. When the fan device operates, the air valve opens to provide air outlet space. When the fan device is not activated, the air valve closes to provide a corresponding protection level for the prefabricated cabin. Although this method can achieve the corresponding functions, there are still some problems in the following aspects: (1) Equipped with fan device air valve, the cost of ventilation is high; (2) Using electric air valve, through electrical control, there is safety and reliability (3) There is a certain hidden danger of water leakage, especially when the electric air valve is not completely closed

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