A cooling device for power distribution cabinets using the principle of semiconductor refrigeration chips

Abstract

The invention relates to the power technology field and discloses a power distribution cabinet heat dissipation device using a semiconductor chilling plate principle. The device comprises a cabinet body. A shielding plate is fixedly connected to an external portion of the cabinet body. A dust collection plate is connected into the shielding plate in an inserted mode. A first air inlet is arrangedin the cabinet body. A baffle plate is rotatably connected into the first air inlet. A rotating plate is fixedly connected to a bottom of a baffle plate. The bottom of the rotating plate is fixedly connected with a connecting rod. A gear is fixedly connected to an outer portion of the connecting rod. A second air inlet is arranged in the cabinet body. Through cooperative usage of the shielding plate and the dust collection plate, the shielding plate plays a role in shielding the first air inlet, rainwater is prevented from entering from the first air inlet, the dust collection plate plays a dustproof role, and dust is prevented from being brought into the cabinet body when the air enters from the first air inlet so that normal operation of electrical elements in the cabinet body is guaranteed, and service lives of the electrical elements in the cabinet body are prolonged.

Description

technical field [0001] The invention relates to the field of electric power technology, in particular to a heat dissipation device for a power distribution cabinet utilizing the principle of a semiconductor refrigeration sheet. Background technique [0002] The power distribution cabinet is the general name of the electrical equipment control center. The power distribution cabinet is used in the occasions where the load is relatively scattered and there are few circuits; the motor control center is used in the occasions where the load is concentrated and there are many circuits. The electric energy of the circuit is distributed to the nearest load. This level of equipment should provide protection, monitoring and control for the load. Since some power distribution cabinets are installed outdoors, the outdoor power distribution cabinets are often exposed to sunlight, and the temperature inside the cabinet is often relatively high. In addition, there are many various electrica...

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Problems solved by technology

[0002] The power distribution cabinet is the general name of the electrical equipment control center. The power distribution cabinet is used in the occasions where the load is relatively scattered and there are few circuits; the motor control center is used in the occasions where the load is concentrated and there are many circuits. The electric energy of the circuit is distributed to the nearest load. This level of equipment should provide protection, monitoring and control for the load. Since some power distribution cabinets are installed outdoors, the outdoor power distribution cabinets are often exposed to sunlight, and the temperature inside the cabinet is often relatively high. In addition, there are many various electrical devices installed inside the power distribution cabinet. These electrical devices emit a large amount of heat during operation, which further increases the temperature inside the cabinet. If the heat is not dissipated in time, it will affect the internal temperature of the cabinet. The normal operation of electrical devices

[0003] Existing power distribution cabinets are often provided with heat dissipation holes directly, and the heat is naturally dissipated through the heat dissipation holes. This method has slow air flow speed and poor heat dissipation effect, and cannot fully protect the normal operation of electrical components in the cabinet, or directly add fans in the cabinet. The heat dissipation effect in the cabinet is accelerated by the fan. However, although the use of the fan will accelerate the air flow in the cabinet, it will often bring in a lot of dust. The dust will not only accumulate on the electrical components in the cabinet, but also on the fan blades. Accumulation not only accelerates the oxidation of electrical components and reduces the service life of electrical components, but also the dust accumulated on the fan blades will reduce the use effect of the fan, thereby reducing the heat dissipation effect of the cabinet, and the heat dissipation holes often open directly through the cabinet, resulting in Rainwater enters the cabinet through the heat dissipation holes, causing damage to the electrical components in the cabinet

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