The thunderstorm-prone season in Guangzhou has returned again. Frequent thunderstorms and windy weather have caused many inconveniences and hidden dangers to people's travel and life. Among them, attention must be paid to the protection of 3C products such as mobile phones, computers and home appliances. Ray, a little carelessness, can easily cause accidents, and even cause loss of life and property.
What should I do if household appliances are struck by lightning?
Mobile phone: it's best not to use it during thunder
In recent years, news about lightning caused by lightning and frequent casualties has often been reported. However, the industry has different views on whether mobile phones are used for lightning, and it has caused quarrels in the field of lightning protection.
One faction believes that when lightning strikes, a large amount of positive charge accumulates in the clouds, and the ground produces a large amount of negative charges. The process of receiving signals by the mobile phone is to receive electromagnetic waves, which is equivalent to building a channel for the thunder and lightning. Negative charges are connected to each other, which will instantly lead the mine. Even if the mobile phone is not in working condition, the generation and reception of electromagnetic waves between the base station and the base station may cause lightning strikes. According to another school of thought, mobile phones will not cause lightning. The reason why people who use mobile phones when thundering is struck by lightning is because their location is at a commanding height relative to the surrounding environment.
Regardless of which side is more correct, it can be determined that the mobile phone's magnetic field will certainly change when thunder strikes, so for safety reasons, it is best not to use mobile phones when thundering.
Fixed telephone: Directly exposed telephone line
There is still controversy over whether or not mobile phones are used for lightning. The industry has agreed that fixed telephones are easy to ignite. It is understood that when a lightning strike occurs, it is easy to enter the various types of metal pipes and wires on the building to generate lightning electromagnetic pulses, which are called inductive lightnings. The induced lightning can easily enter the room through the fixed telephone line. Nowadays, the city's fixed telephones are mostly underground pipelines, and they are also safe. In rural areas and many places in the mountains, telephone lines are still exposed directly to the outdoors. There is a risk. However, if a telephone line lightning arrester is installed, it can be reduced. Ray's possible. Computer: Unplug the network cable and the power and fixed telephones are similar to the principle of easy lightning, the computer's power cable and network cable, etc. may also become the "channel" of the induction mine, in severe cases will burn the power supply or the motherboard, if the computer is still used when thunder If you go online, the loss of your computer will be even greater. Therefore, the interior of the computer needs to be equipped with lightning protection devices, namely, shielding, grounding and installation of lightning arresters. Without these devices, it is not useful to turn off the device during thunder and it is necessary to remove the plug.
Household appliances: too close to the wall to be easily struck by lightning
The thunder and lightning protection of household appliances is also very important. Inductive lightning can easily enter the interior through power lines, cable TV lines, etc. These are all connected directly to the electrical products in the home. In addition, refrigerators, air conditioners, and laundry are also available. Home appliances such as TVs and TVs are often placed near the wall. Once a building is struck by lightning, powerful lightning currents will flow down the outer walls or pillars of the building. In the process, due to the external walls or pillars of the building, Powerful lightning currents flow through, creating electric and magnetic fields in the surrounding space. If home appliances are placed too close to an external wall or column, they may be damaged. Although many home appliances will be designed with lightning protection devices into consideration, but pay attention to some lightning protection measures, be careful, there is always nothing wrong.
Air Conditioning: Outdoor Machine Attention to Lightning
Air conditioning is one of the household electrical appliances that are most vulnerable to lightning strikes. Because the compressors for air-conditioning and refrigeration are often installed outdoors, they are vulnerable to direct lightning strikes. At the same time, lightning is introduced into the room to burn out the host and even harm other items. Therefore, when installing an outdoor machine, lightning protection measures are required. In addition, the indoor unit must be shielded to prevent lightning current intrusion. It is best to stop using the air conditioner during thunder and pull out the power supply.
Solar water heater: it is best to install an independent lightning rod
Another home appliance that is installed outdoors and easy to ignite is a solar water heater. If the user is bathing or using water when thundering occurs, the solar water heater at the highest point of the building and the human body become a conductive body and become a lightning protection device. If lightning strikes a solar water heater, it will endanger human life safety. The installation of a solar water heater on the roof requires the installation of a separate lightning rod, and in the case of thunder, it is best not to use a water heater to avoid and reduce the damage caused by lightning.
TV: Keep away from windows and doors
In the past when the outdoor antenna was used, the possibility that the TV set was struck by lightning was relatively large. Now there is no need to worry about the possibility of outdoor antenna lightning, but you need to be careful about windows and doors. Windows and doors are one of the important ways for lightning to invade the room, so they are placed in the home. When you are on a TV, you should choose to stay away from doors and windows. Once thunder, quickly close the doors and windows, turn off the TV, and pull out the plug, pay attention to the cable signal cable is also pulled out, so that you can better protect the TV from lightning damage.
Washing machine: pay attention to the water pipe now more than the family to use automatic washing machines, washing machine washing machine circuit board is a module integrated microelectronics computer board, lightning resistance is relatively poor, lightning strikes easily lead to short circuit board, causing the washing machine can not use or even leakage. Another safety hazard for washing machines in thunderstorms comes from the water pipes, which also increases the probability of the machine being hit by a lightning strike. So when it is thunder, it is best to stop using the washing machine and remove the power outlet. When not in use, it is best not to connect the washing machine to the water pipe.
Related Links
According to national regulations, home appliance manufacturers need to clearly inform consumers in the manual of home appliances how to correctly avoid lightning strikes. If there is no such content in the manual, consumers can ask the manufacturer for corresponding responsibilities. Manufacturers do not need to be responsible.
Article 17 of the three-package rule for household appliances mentions that “in one of the following cases, the three bags are not implemented, but fee-based repairs may be implementedâ€, in which Article 5 “caused by irresistible damage†includes lightning strikes, etc. Natural phenomena within this category are all such force majeure. Therefore, if a lightning strike causes damage to the home appliance, you can only repair your own pockets.
However, the reporter also found that if the purchase of property insurance products, may be able to restore some of the losses. Many property and casualty insurance products now have the protection of property damage caused by fire, lightning, falling objects, etc. However, it should be noted that this type of property insurance generally does not cover household appliances installed outdoors. , Including air conditioners, solar water heaters, etc.
What should I do if household appliances are struck by lightning?
Mobile phone: it's best not to use it during thunder
In recent years, news about lightning caused by lightning and frequent casualties has often been reported. However, the industry has different views on whether mobile phones are used for lightning, and it has caused quarrels in the field of lightning protection.
One faction believes that when lightning strikes, a large amount of positive charge accumulates in the clouds, and the ground produces a large amount of negative charges. The process of receiving signals by the mobile phone is to receive electromagnetic waves, which is equivalent to building a channel for the thunder and lightning. Negative charges are connected to each other, which will instantly lead the mine. Even if the mobile phone is not in working condition, the generation and reception of electromagnetic waves between the base station and the base station may cause lightning strikes. According to another school of thought, mobile phones will not cause lightning. The reason why people who use mobile phones when thundering is struck by lightning is because their location is at a commanding height relative to the surrounding environment.
Regardless of which side is more correct, it can be determined that the mobile phone's magnetic field will certainly change when thunder strikes, so for safety reasons, it is best not to use mobile phones when thundering.
Fixed telephone: Directly exposed telephone line
There is still controversy over whether or not mobile phones are used for lightning. The industry has agreed that fixed telephones are easy to ignite. It is understood that when a lightning strike occurs, it is easy to enter the various types of metal pipes and wires on the building to generate lightning electromagnetic pulses, which are called inductive lightnings. The induced lightning can easily enter the room through the fixed telephone line. Nowadays, the city's fixed telephones are mostly underground pipelines, and they are also safe. In rural areas and many places in the mountains, telephone lines are still exposed directly to the outdoors. There is a risk. However, if a telephone line lightning arrester is installed, it can be reduced. Ray's possible. Computer: Unplug the network cable and the power and fixed telephones are similar to the principle of easy lightning, the computer's power cable and network cable, etc. may also become the "channel" of the induction mine, in severe cases will burn the power supply or the motherboard, if the computer is still used when thunder If you go online, the loss of your computer will be even greater. Therefore, the interior of the computer needs to be equipped with lightning protection devices, namely, shielding, grounding and installation of lightning arresters. Without these devices, it is not useful to turn off the device during thunder and it is necessary to remove the plug.
Household appliances: too close to the wall to be easily struck by lightning
The thunder and lightning protection of household appliances is also very important. Inductive lightning can easily enter the interior through power lines, cable TV lines, etc. These are all connected directly to the electrical products in the home. In addition, refrigerators, air conditioners, and laundry are also available. Home appliances such as TVs and TVs are often placed near the wall. Once a building is struck by lightning, powerful lightning currents will flow down the outer walls or pillars of the building. In the process, due to the external walls or pillars of the building, Powerful lightning currents flow through, creating electric and magnetic fields in the surrounding space. If home appliances are placed too close to an external wall or column, they may be damaged. Although many home appliances will be designed with lightning protection devices into consideration, but pay attention to some lightning protection measures, be careful, there is always nothing wrong.
Air Conditioning: Outdoor Machine Attention to Lightning
Air conditioning is one of the household electrical appliances that are most vulnerable to lightning strikes. Because the compressors for air-conditioning and refrigeration are often installed outdoors, they are vulnerable to direct lightning strikes. At the same time, lightning is introduced into the room to burn out the host and even harm other items. Therefore, when installing an outdoor machine, lightning protection measures are required. In addition, the indoor unit must be shielded to prevent lightning current intrusion. It is best to stop using the air conditioner during thunder and pull out the power supply.
Solar water heater: it is best to install an independent lightning rod
Another home appliance that is installed outdoors and easy to ignite is a solar water heater. If the user is bathing or using water when thundering occurs, the solar water heater at the highest point of the building and the human body become a conductive body and become a lightning protection device. If lightning strikes a solar water heater, it will endanger human life safety. The installation of a solar water heater on the roof requires the installation of a separate lightning rod, and in the case of thunder, it is best not to use a water heater to avoid and reduce the damage caused by lightning.
TV: Keep away from windows and doors
In the past when the outdoor antenna was used, the possibility that the TV set was struck by lightning was relatively large. Now there is no need to worry about the possibility of outdoor antenna lightning, but you need to be careful about windows and doors. Windows and doors are one of the important ways for lightning to invade the room, so they are placed in the home. When you are on a TV, you should choose to stay away from doors and windows. Once thunder, quickly close the doors and windows, turn off the TV, and pull out the plug, pay attention to the cable signal cable is also pulled out, so that you can better protect the TV from lightning damage.
Washing machine: pay attention to the water pipe now more than the family to use automatic washing machines, washing machine washing machine circuit board is a module integrated microelectronics computer board, lightning resistance is relatively poor, lightning strikes easily lead to short circuit board, causing the washing machine can not use or even leakage. Another safety hazard for washing machines in thunderstorms comes from the water pipes, which also increases the probability of the machine being hit by a lightning strike. So when it is thunder, it is best to stop using the washing machine and remove the power outlet. When not in use, it is best not to connect the washing machine to the water pipe.
Related Links
According to national regulations, home appliance manufacturers need to clearly inform consumers in the manual of home appliances how to correctly avoid lightning strikes. If there is no such content in the manual, consumers can ask the manufacturer for corresponding responsibilities. Manufacturers do not need to be responsible.
Article 17 of the three-package rule for household appliances mentions that “in one of the following cases, the three bags are not implemented, but fee-based repairs may be implementedâ€, in which Article 5 “caused by irresistible damage†includes lightning strikes, etc. Natural phenomena within this category are all such force majeure. Therefore, if a lightning strike causes damage to the home appliance, you can only repair your own pockets.
However, the reporter also found that if the purchase of property insurance products, may be able to restore some of the losses. Many property and casualty insurance products now have the protection of property damage caused by fire, lightning, falling objects, etc. However, it should be noted that this type of property insurance generally does not cover household appliances installed outdoors. , Including air conditioners, solar water heaters, etc.
This is about Centrifugal Fan
Centrifugal fan is to rely on the input of mechanical energy, increase gas pressure and send gas machine, it is a kind of driven fluid machinery. Centrifugal fans are widely used in ventilation, exhaust and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and draft in boilers and industrial furnaces; cooling in air conditioning and domestic appliances and Ventilation; grain drying and selection; wind tunnel source and hovercraft inflatable and propulsion.
Centrifugal fan works with turbine compressor basically the same, are due to the gas flow rate is low, little pressure change, generally do not need to consider the gas volume change, that is, the gas as incompressible fluid treatment.
Centrifugal fan can be made of right-handed and left-handed two types. Faced from the motor side: impeller clockwise rotation, known as the right rotary fan; impeller counterclockwise rotation, known as the left rotary fan.
Centrifugal fan from the chassis, spindle, impeller, bearing and motor drive and other components.
Chassis: made of steel sturdy and reliable, can be sub-integral and semi-open, semi-open for easy maintenance.
Impeller: the blade, curved front plate and plate rear plate composition.
Rotor: Static and dynamic balance should be done to ensure smooth rotation, good performance.
Transmission parts: a spindle, bearing boxes, rolling bearings and pulleys (or coupling) composition
Centrifugal blowers are widely used in sewage treatment, smelting blast furnace, coal preparation plant, mine flotation, chemical gas, vacuum and other fields, can also be used to transport other special gases.
Features
1. Compact structure: beautiful appearance, good stability, easy installation and maintenance.
2. Smooth operation: Optimized design of the impeller to reduce the axial force to a minimum, and efficient impeller, and static and dynamic balance correction, the machine running smoothly, without any damping device in the case of bearings Amplitude ≤0.04mm.
3. Low noise: blower operation, without any mechanical friction, the use of a reasonable blade-shaped line to the sound to a minimum. Centrifugal blower noise is high-frequency noise, as long as there are obstacles, can be noise, so the fan room almost no noise.
4. Oil-free machinery: Blower bearings with grease lubrication, bearing life of more than three years. Fan does not generate oil and gas during operation. Special requirements fans, with molybdenum disulfide lithium grease lubrication bearings.
5. Impeller: Impeller with a special compound linear, reducing internal leakage and improve the volumetric efficiency.
6 easy to adjust: the inlet valve to regulate flow, the outlet valve to regulate the pressure.
7. Drive: usually using a two-pole asynchronous motor, you can also use four-pole motor drive. Depending on the user grid, different voltage motors can be used.
8. Sealing: In addition to each level of import impeller impeller, the interstage and the housing at both ends with a labyrinth seal to prevent gas leaks.
9. Cooling: exhaust bearing housing has two structures, air-cooled and water-cooled, as the impeller on the level of gas compression, resulting in the exhaust casing temperature is much higher than the intake casing. In the exhaust bearing air-cooled or water-cooled device to extend the bearing life.
10. Bearing temperature control alarm: fan accessories with temperature control box, connected to the bearing through the PT100 resistance, when the bearing temperature exceeds the set temperature, the temperature control box will automatically alarm.
11. Transmission: a coupling drive, belt drive, gearbox drive three. According to different equipment and technology, choose a different transmission
if you have any questions,please contact with us directly.AC axial fan are produced by Aluminum Alloy and PBT+30%GF impeller.Welcome visiting our Factory or sending mail directly to inquiry us.
Centrifugal Fan
Centrifugal Fan,Centrifugal Blower Fan,Centrifugal Exhaust Fan,Dc Centrifugal Fan
Shenzhen Fu Sheng Electric Co., LTD. , http://www.fushengfan.com