Ventilation fan mounted on the top of an electrical cabinet

Abstract

The invention provides a top-mounted air-exchange fan for an electrical rack and belongs to the technical field of electrical rack heat radiation devices. The top-mounted air-exchange fan comprises a top-mounted fan and a bottom box which are oppositely arranged. The top-mounted fan comprises a ventilated top cover and a blower fan. The side surface of the bottom box is provided with a fixing frame equipped with a filter screen and a blower fan fixing plate equipped with the blower fan. The blower fan fixing plate is sleeved at the inner end of the fixing frame and is provided with a leakproof draining mechanism. The outer side of the bottom box is provided with a plurality of grid sheets which are in the inner higher and outer lower inclination setting, and the upper end edges of the grid sheets are provided with waterproof inverted hooks protruding outwardly. The inner side of the bottom box is provided with a covered edge frame along the edge of the outer side, and an opening and closing mechanism and a latching mechanism are connected between the covered edge frame and the upper and lower ends of the blower fan fixing plate respectively. The top-mounted air-exchange fan is convenient to dismount, stable in structure and strong in versatility, the protection performance of the filter device can be effectively improved by the inverted hooks and the waterproof structure, and the stable operation of equipment in the electrical rack is further maintained.

Description

technical field [0001] The invention belongs to the technical field of heat dissipation devices for electrical cabinets, and in particular relates to a ventilating fan mounted on the top of an electrical cabinet. Background technique [0002] Since there are a lot of energy-consuming equipment in the electrical cabinet, the heat generated during its operation will affect the stable operation of the equipment and damage the equipment. Therefore, most of the electrical cabinets are equipped with forced convection air cooling devices to reduce the temperature inside the electrical cabinet and improve electrical performance. The operational stability of the equipment. As we all know, the airflow generated by the fan can easily drive the air flow in the electrical cabinet, so that the equipment in the electrical cabinet can operate normally. [0003] At present, the common heat dissipation and ventilation devices on the electrical cabinet are generally the main body installation...

AI Technical Summary

Problems solved by technology

However, the structure of the existing main body installation frame is too simple, and the filtering effect of the grid bottom box and the dust filter is difficult to eliminate the penetration of water molecules and dust, especially for the installation structure of the filter. It produces a large protection blind area, its protection and dust removal efficiency is low, and its disassembly and maintenance are more complicated, which leads to a greatly shortened life and replacement cycle of the filter device, and increases the equipment failure rate in the electrical cabinet

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