With the development of communication technology, the cost of communication equipment is also decreasing, and the appearance of the cabinet equipment has also undergone great changes. Communication equipment in the development of a large extent to play the characteristics of optical fiber transmission, and combined with the advantages of network resources, has been laid to the community residents. Communication equipment is small, resulting in high density of equipment, but also brings noise problems. The quiet cooling equipment of outdoor chassis and cabinet of communication equipment has become an important issue in the development of communication equipment at this stage. This design uses passive heat dissipation and mute outdoor cabinets.

1. chassis cabinet mute cabinet system design concept

The design of the mute cabinet system is mainly to solve the heat dissipation and mute control problems of the closed structure. The mute function of the device is mainly realized by using natural heat dissipation. The system does not require a fan to force heat dissipation, and can achieve passive heat dissipation to control the temperature of the device. Since the outdoor communication equipment is installed in a closed cabinet, a large amount of heat needs to be dissipated during operation. If the heat cannot be discharged, it will cause the heat balance in the chassis to be unbalanced, resulting in high temperature accumulation, which may cause equipment damage. Natural heat dissipation is mainly transmission heat dissipation and radiation heat dissipation. Conduction refers to the direct conduction of heat inside the chassis to the surface of the chassis, so that the heat is released out of the cabinet. Radiative heat dissipation refers to the use of the surface area of the chassis to radiate the heat in the internal air to the outside of the cabinet. Sunlight has a great influence on the heat dissipation of communication equipment. Therefore, in order to reduce the direct exposure of communication equipment to sunlight, light-colored chassis surface materials should be used to reduce sunlight absorption and reduce the temperature of the chassis.

Design of Mute Heat Dissipation Structure for 2. Chassis Cabinet

The silent heat dissipation chassis is mainly installed in the corridors and outdoor walls of the residents, so the overall requirement for the equipment structure is that the structure is relatively small and has no impact on the normal life of the residents.

1. Heat dissipation design of single board components of chassis cabinet

The heat supply point of the outdoor communication equipment chassis mainly comes from the chip. Therefore, in order to improve the overall heat dissipation performance of the device, it is necessary to control the chip temperature and air temperature. In general, it is necessary to connect the heat dissipation plate to the chip of the device, and connect the heat dissipation plate to the cabinet shell to transmit the temperature of the chip to the cabinet. In the treatment of concentrated heat dissipation, the cost of the heat dissipation connection board should be controlled, and the connection board should be used on both sides. The chip is connected with the heat dissipation connection board to achieve a good heat dissipation effect. Select the chip according to the requirements of the equipment, and control the conduction section of the heat dissipation connection board.

2. Heat dissipation of chassis cabinet

The heat dissipation of the chassis cabinet is the last step of the entire heat dissipation system. In addition to controlling sunlight, the outdoor cabinet also provides a conduction function for the internal structure to reduce the temperature of the equipment. The shell can be sprayed with light-colored spray materials to reduce the heat caused by sunlight.