【 Weak current College 】 air conditioner produced the main cause of fire-Power By 【 China power house network 】

In recent years, the amount of air conditioner society has grown very quickly. Cold and hot-air conditioner widely implemented, making air conditioner running time increases. Some of the air conditioner in the design, manufacture, installation, use and users ignore fire safety incidents. Therefore, understanding their fire risk, preventive measures are very important.

Air conditioners, fire, has the following main reasons:

(1) fire caused air conditioner capacitor breakdown

There are three main reasons:

Firstly, because of the capacitor voltage value is not enough, easy breakdown. At present, domestic capacitor size than similar foreign products to the large number of dimensions, the Assembly is placed in the air conditioner. Individual factories in order to accept orders that meet the users on the machine size, and one-sided reduce capacitor voltage values, leading to a capacitor is often caused by a breakdown, fires.

Followed by the capacitor damp breakdown. Capacitor damp, leakage current increases, insulation, very prone to breakdown accident.

Once again is the power supply voltage is too high, some regions due to the load, voltage fluctuations, such as agencies, residential area in the night-time voltage obviously too high, when air conditioners, capacitor, prone to breakdown.

(2) air conditioner fan or centrifugal fans for fault stuck stopped the fan motor temperature rise, resulting in overheating short burst into flames. This is mainly due to cooling condenser fan often due to manufacturing or material improperly, in operation, the gradual cracks, causing damage to the motor fan stuck not go. Or as easy to install, fan hole and the co-ordination of the motor shaft, using perturbed by securing screws tightened orientation. If the screw is loose, fan shift, sometimes stuck motor. Therefore, the fan motor for fault stuck after motor temperature rise, resulting in overheating short burst into flames.

(3) when the electric-type air conditioner electric wire heating indoor cycle air, fan failure, heating wire is not recirculated air cooling, the surrounding space temperature rise. Air conditioner without thermal protection equipment or protective device failure, can not be timely cut off circuit, will ignite combustible materials, resulting in a fire.

In addition, on some of the air conditioner suddenly or outage, electric wire and fan motor at the same time being cut off, the heat electric components cannot be distributed, it will also make the surrounding temperature to rise, causing a fire.

In order to prevent such accidents, electric-type air conditioners should prohibit paste combustible plastic, thermal insulation material. As far as possible capacity small electric heating element, because the remaining hot little, after warming also small downtime.

(4) sealed wiring block, breakdown. Single-phase conditioners of hermetic compressor seal wiring block, frequent breakdown accident, in particular, the cooling capacity of air conditioners, electric current, such as refrigeration capacity 5000 kcal/h single-phase window type air conditioner, power supply 220 volt, operating current of up to 17, such large currents through sealed wiring block, prone to breakdown. Once the breakdown, the compressor refrigeration oil from closed enclosure in overflow, flow into the air conditioner chassis, if not timely processing, meet fire would burst into flames.