Will the air conditioner ignite spontaneously Expert of the Department of Fire Engineering More than ten reasons can cause spontaneous combustion

Will the air conditioner ignite spontaneously Expert of the Department of Fire Engineering More than ten reasons can cause spontaneous combustion
Recently, a well-known media person suffocated to death due to spontaneous combustion of air conditioners and released a large amount of poisonous gas. As the summer heats up, "air conditioning spontaneous combustion" has quickly become a hot spot for the masses.

　　 There are many reasons for air conditioning spontaneous combustion

　　 Will the air conditioner ignite spontaneously? meeting! Zhang Jinzhuan, a professor in the Department of Fire Protection Engineering of the Chinese Armed Police Academy, told reporters that more than ten reasons such as improper installation and use of air conditioners and component failures may cause air conditioners to catch fire.

Zhang Jinzhuan stated that there are only six possibilities for fire in the electrical circuit of the air conditioner: loose power cord end connectors or poor contact of the motor, transformer, etc. in the air conditioner, resulting in excessive contact resistance and fire; too small capacity of the socket plug, resulting in overheating; The power cord and its power do not match, causing overload and causing fire; the insulation strength of the wires and electrical components in the machine is reduced, and leakage and ignition may cause fire; the insulation of the compressor sealing terminal is damaged, causing leakage and ignition, and igniting the spilled refrigerant and oil. Nearby combustibles caught fire; external voltage changes caused the motor to overheat and ignite combustibles.

Zhang Jinzhuan said that the internal components of the air conditioner can also cause the air conditioner to catch fire. There are multiple motors with different functions in the air conditioner. If the motor current increases, the turn-to-turn short-circuit occurs and a fire occurs; the failure of the air conditioner control switch can cause a fire, such as the adhesion of the AC relay contacts and the turn-to-turn short circuit of the electromagnetic coil.

　　 The failure of electrical components can also cause the air conditioner to catch fire. The high-temperature electric spark generated when the capacitor breaks down can ignite combustible materials such as the inner liner of the machine and the casing of the partition plate. Zhang Jinzhuan told reporters that this type of fire was mainly due to high power supply voltage, moisture leakage of the air conditioner, and no moisture-proof treatment.

　　 Improper installation and use can also cause the air conditioner to catch fire. The air conditioner is close to combustible objects such as curtains and wooden structures, and is placed in the morning. Due to long-term sunlight, the compressor will overheat and catch fire due to continuous operation; window air conditioners usually use 220V power supply, and the power plug is a single-phase one-wire plug. The overvoltage of the 380V three-phase power supply caused a fire.

　　 It is also a fire hazard that the air conditioner starts immediately after it stops. After the air conditioner is out of service, the pressure difference between the inlet and outlet of the compressor is relatively large. If it is restarted immediately, the capillary tube will not be balanced, causing the load to increase and the current to increase sharply, causing the motor to burn and cause a fire.

　　 Zhang Jinzhuan told reporters that air conditioners are frequently used in summer to prevent air conditioners from fires. Pay attention to the following points:

　　 1. Choose an air conditioner brand with good quality and good reputation.

　　2. Ask professional air conditioner installers to install the air conditioner, and select the wires, plugs and fuses that match the air conditioner.

　　 3. The air conditioner should not be installed too close to the curtain, or the curtain fabric should be made of flame-retardant fabric.

　　4. With electric heating type air conditioner, after the user stops heating, the electric heating part can be shut down after cooling down.

　　 5. Don't turn off frequently for a short time.

　　News link:

　　·On July 7 this year, the hanging air conditioner in Mr. Yu's home in Ningbo, Zhejiang Province suddenly caught fire during use. In just a few minutes, the air conditioner burned into coke. Fortunately, it was discovered early and did not cause greater losses.

　　 It is reported that Mr. Yu bought a wall-mounted air conditioner, and the manufacturer is also in Cixi, Zhejiang. This air conditioner was bought in 2005, and it’s been a few years since it counted.

A staff member of the air conditioner manufacturer named Hu said, “The service life of the air conditioner is generally 8 years, and Mr. Yu’s air conditioner has been used for 13 years and has passed the service life. As for the solution, we will contact the consumer To negotiate."

　　·On March 20 this year, an air conditioner in a residential area in Wenchang City, Hainan Province suddenly caught fire and caused a fire. Fortunately, local firefighters dispatched police in time and successfully extinguished the fire, but a lot of home belongings were burned.

　　·In June 2016, a cabinet air conditioner priced at 7,300 yuan in a household in Fuyang City, Anhui Province suddenly ignited spontaneously, causing indoor ceiling fans and walls to be burnt. Fortunately, there was no one in the house and no casualties were caused.

　　·May 22, 2015, a consumer Guo Mou in Zhumadian City, Henan Province ordered a cabinet air conditioner, which was installed in early June. At around 8 pm on July 20, the newly purchased air conditioner suddenly caught fire and caused a fire. The newly renovated wedding room was completely blackened by the fire.