3 thoughts on “What is the working principle of negative ion air purifier?”
Clyde
The negative ion air purifier uses the so -called electric halo discharge method to generate electrical molecules, that is, ions. Most atoms in the air are electrical, they have the same number of negative electrons and positive protons with the same amount. Electric halo discharge forms a small but strong electric field. The molecules passing through this electric field will get an electrons and bring a negative charge; or lose an electron and bring a positive charge. Larger particles (such as dust or other pollutants, etc.) are more likely to become ions because they are easier to obtain or lose electrons when they pass through the electrostatic discharge area. Once a piece of particles are served, it will be attracted by any other substance with the opposite charge. Two charging metal plates in the air purifier (one piece with a positive electricity, a negative power) can adsorb the charged particles. In addition, if the particles in the air have different charge, they will attract each other. The particles that attracted each other became heavier, and finally dropped from the air. The operating principle of negative ion air purifier is very similar to the ozone generator. However, the purpose of the ozone generator is to transform oxygen molecules into ozone molecules (molecules composed of three oxygen atoms). The manufacturer of the ozone generator claims that ozone can deodorize and disinfect air. Many manufacturers also claim that ozone can bring other benefits to people's health. But conclusive evidence shows that ozone does not have the effect of purifying air. Moreover, people know that ozone is a toxic gas. Ozone molecules are not very stable, and it is easy to react with other chemicals that may exist in the air to form new compounds, and these compounds may be more harmful than the ozone itself. Ozone will also oxidize metals and cause corrosion. In the process of producing ozone, nitrogen oxides, nitrogen oxides and compounds in the air and ozone itself will also cause further reactions.
The purification of the air purifier should be divided into three categories from its working principle: The first category: passive purification class (filter purification class) Filtering air through the built -in filter can mainly play the role of filtering dust, odor, toxic gases and killing some bacteria. The filter is divided into: dust filter, de -formaldehyde filter, deodorizing filter, HEPA filter, etc. Among them, the HEPA filter is relatively high, which can decompose toxic gases and sterilization, especially inhibiting secondary pollution. The characteristics of such products are the function of the fan function and the quality of the filter. The purification effect of the machine and the indoor layout affect whether the purification is complete. The indoor purification effect is uneven, it is difficult to complete, and the filter replacement cost is high. Product representative: European brands such as Honeywell. The second largest category: active purification class (no filter type) The active sterilization principle based on these products can be divided into silver ion technology, negative ion technology, low -temperature plasma technology, light touch media technology and net ions ions technology. The first generation, silver ion purification technology. Simply put, it is the effect of blowing silver block ionization into the air to play a bactericidal effect. The cost of disadvantages is high, the killing rate of bacteria is low, and there is almost no killing characteristics to the virus. Product representative: Early Panasonic products. The second generation, negative ion technology. The main principle is to use electrostatic release of negative ions to adsorb the dust in the concentrated air to reduce the dust reduction. At the same time, negative ions also have the effect of ionization into oxygen in the air. It has a certain killing effect on bacteria. Low. Product representatives: Yadu, Philips. The third generation, low temperature plasma technology. The main principle is that by the discharge voltage of the gas to the gas to the gas, the gas is broken down, producing a variety of strong oxidized low -temperature plasma, and decomposing the touched pollutants in a very short time. This technology is generally used for industrial exhaust gas treatment, and secondary pollution is generated after chemical reactions. If it is applied to the home air purifier, it is necessary to do human safety testing and corresponding secondary pollution treatment technology. The fourth generation, light touch media technology. Light Cataracts actually use semiconductor to release the technology of free radicals with strong oxidation power under the light of light. The advantage of this technology is that the cost of the product is low, and the disadvantage is that the free radical activity causes the short time to stay in the air, and the killing effect of the virus and bacteria is also limited. Product representative: Dajin. The fifth generation, net ion cluster technology. Sharp Global Patent Technology in 2000. It is a technology that directly electrizes the water molecules in the air into H free radicals and OH free radicals, and then wraps water molecules. OH free radicals have more than ozone for viruses and bacteria, and the existence time in the air is longer than oxygen. The net ion group ion technology enables OH free radicals to wrap a layer of water molecules to maintain its existence time in the air. At the same time, the water of bacteria and viruses can be used to kill bacteria and viruses more quickly. This technology is currently recognized internationally recognized medical space purification technology, and it is also the only space purification technology that can be used to H1N1, H1N5 bird flu, and SARS killing rates of more than 99%. Product representative: Sharp. The third category: dual purification category (active purification passive purification) The main representative brand of this type of purifier: (1) Sharp (filter net ion group technology); (2) Bruce Yal (filter negative ion technology); (3) Philips (filter negative ion technology). This is a brief content, you can take a look at the detailed air purifier knowledge on the website.
Zhang, the general manager of Shijiazhuang, the designated enterprise of Shijiazhuang Formaldehyde Testing and Management, said that with the general manager of the better environmental protection engineering Co., Ltd., the air purifier has become a must -have for many families as the "haze economy" is heating up rapidly. Data show that in the next five years, the market capacity of air purifiers will increase at a rate of 30%per year. Under the needs of a strong market, various relevant manufacturers compete in this field and launched various functions of purifiers. However, the reporter found in the survey that although there are many categories of the market, there are currently no uniform certification standards. Various manufacturers have different publicity on efficacy, and consumers are foggy in buying. People in the industry generally call for the air purifier industry to urgently need to introduce a unified national standard.
The air purifier industry has invested in the blue ocean "The air purifier industry is the rising industry in China, and the potential is huge." Manager Zhang introduced. In it is understood that the air purifier originally purchased the air purifier to remove formaldehyde and purify the air that lived after just renovation. With people's attention to "haze", various air purifiers such as haze removal function and release of net ionic functions have entered the consumer market. This trend is immediately favored by capital. The air purifier industry has now become a new investment Hot spots. In addition to the large market space, the profit is also very considerable. The person in charge of a new brand air purifier enterprise introduced to reporters that at first the decision to enter the air purifier industry was attracted by the 50%profit in the industry. However, it was discovered that the industry's 50%profit was quite conservative. The person told reporters that no matter what the product has, the cost of a air purifier is 800 yuan, but the market price can be sold for 2000 ~ 5,000 yuan, and the profit space is about 300%. has always known that Chinese home appliance companies have always been known for their response. Once the new segment industry has risen, it will swarmed up. This phenomenon is confirmed in the air purifier industry. At present, major household appliance companies have basically been established in the field of air purifier. If surveys from reporters, the principles of purification products of major entrepreneurs at present are different. According to Sharp, the new products of the air purifier it launched are cleaning the net ion cluster technology, that is, a net ion group generator is installed inside the product, which can release a high concentration of net ion group ions. The person in charge of the Midea air conditioner is called its air purifier using an high -efficiency tower structure filter, which can purify high -frequency three -dimensional circulation. Some other companies use activated carbon filter to filter, and some companies also combine the function of humidification and purification into one. The reporter visited a number of stores for investigation and found that the price of air purifiers of various brands ranges from thousands of yuan to tens of thousands of yuan, and its functions and types are different. From the traditional activated carbon filter elements Essence Various brands have also vigorously promoted "aldehydes" as a selling point, and the purification effect of its promotion is even more godly. Publicity advertisements such as "formaldehyde decline rate of 99.7%", "99.36%of formaldehyde 99.36%", "pure life, opening the state -free realm" and other promotional advertisements can be seen everywhere at the counter. The publicity and exaggeration of poor results A few days ago, the General Administration of Quality Supervision, Inspection and Quarantine announced the 2015 product quality state supervision and random inspection plan, involving 182 products. Among them, the air purifier was first included in the national supervision random inspection plan. If regulatory policies tightened from several unsatisfactory random check results. The local quality supervision departments have repeatedly conducted spot checks on air purifiers that many products cannot achieve the effect of purifying air, but they will produce a certain toxicity. The effect of formaldehyde is very different from the marking value. The response to the manufacturer said that the removal rate of formaldehyde is low because the machine does not run enough time. If it is long enough, the purification rate can reach 90%.石家庄甲醛检测治理定点企业石家庄比好更好环保工程有限公司总经理张总表示，同样是声称“甲醛净化效果能达到98%”，有的净化器只需要一两个小时就能达到，而有The purifier takes six hours, or even longer. Although the promotional value can be achieved in the end, the actual significance is not great. Many companies are playing text games intentionally, exaggerating the publicity function. For the haze -removing air conditioner, Zhang also believes that whether the air conditioner can remove PM2.5 particles depends on the structure inside the air conditioner. The module that removes formaldehyde must not be eliminated by PM2.5. Because modules absorb formaldehyde is a process of chemical decomposition. The removal of PM2.5 particles is mainly adsorbed through high -efficiency filter, which is a process of physical treatment. "Therefore, the so -called removing formaldehyde is definitely unscientific to be able to remove PM2.5." Mr. Zhang reminded. The national standards in the industry urgently need to be introduced The industry situation is chaotic and rapid expansion, which has no great relationship with industry standards. It is understood that, for air purifier products, the state has launched corresponding national compulsory standards. The recommended national standards are also based on corporate data as the basis for testing and evaluation. Therefore, the current purification rate data of various companies is not tested under the same conditions, which gives many companies a chance. In addition, some local industry certification testing institutions have also emerged. Many certification testing institutions do not have the qualifications of the air purifier industry. According to industry insiders, some local certification testing agencies claim that they are qualified for certification, but during the certification process, if certain technical indicators do not meet the standard, after paying a certain amount of "testing costs" or "self -inspection costs", Technical indicators can change greatly. The consumers who buy products on the market will find that there are a variety of certification testing agencies. For example, a Woxun car air purifier provides a certificate of air purification issued by the environment and health related products of the China Disease Control and Control Center; Philips issued the inspection and demonstration of the American Electrical Appliances Association; What is issued by the brand is a certificate of qualifications for the air purification effect of the local quality supervision department. The general manager of Shijiazhuang, the fixed -point enterprise of Shijiazhuang formaldehyde testing and governance, Zhang, general manager of Shijiazhuang better environmental protection engineering Co., Ltd. The bottom test will provide a strong data reference for the decision -making department, and the development of the industry will speed up. The general manager Zhang Shijiazhuang's fixed -point enterprise Shijiazhuang better environmental protection engineering Co., Ltd., Mr. Zhang, told reporters that the new national standard for air purifiers in 2015 is about to be introduced. This will not only help promote corporate product upgrade and technological improvement It will also provide important reference for consumers to buy and identify products.
The negative ion air purifier uses the so -called electric halo discharge method to generate electrical molecules, that is, ions. Most atoms in the air are electrical, they have the same number of negative electrons and positive protons with the same amount. Electric halo discharge forms a small but strong electric field. The molecules passing through this electric field will get an electrons and bring a negative charge; or lose an electron and bring a positive charge. Larger particles (such as dust or other pollutants, etc.) are more likely to become ions because they are easier to obtain or lose electrons when they pass through the electrostatic discharge area.
Once a piece of particles are served, it will be attracted by any other substance with the opposite charge. Two charging metal plates in the air purifier (one piece with a positive electricity, a negative power) can adsorb the charged particles. In addition, if the particles in the air have different charge, they will attract each other. The particles that attracted each other became heavier, and finally dropped from the air.
The operating principle of negative ion air purifier is very similar to the ozone generator. However, the purpose of the ozone generator is to transform oxygen molecules into ozone molecules (molecules composed of three oxygen atoms).
The manufacturer of the ozone generator claims that ozone can deodorize and disinfect air. Many manufacturers also claim that ozone can bring other benefits to people's health. But conclusive evidence shows that ozone does not have the effect of purifying air. Moreover, people know that ozone is a toxic gas. Ozone molecules are not very stable, and it is easy to react with other chemicals that may exist in the air to form new compounds, and these compounds may be more harmful than the ozone itself. Ozone will also oxidize metals and cause corrosion. In the process of producing ozone, nitrogen oxides, nitrogen oxides and compounds in the air and ozone itself will also cause further reactions.
The purification of the air purifier should be divided into three categories from its working principle:
The first category: passive purification class (filter purification class)
Filtering air through the built -in filter can mainly play the role of filtering dust, odor, toxic gases and killing some bacteria. The filter is divided into: dust filter, de -formaldehyde filter, deodorizing filter, HEPA filter, etc. Among them, the HEPA filter is relatively high, which can decompose toxic gases and sterilization, especially inhibiting secondary pollution.
The characteristics of such products are the function of the fan function and the quality of the filter. The purification effect of the machine and the indoor layout affect whether the purification is complete. The indoor purification effect is uneven, it is difficult to complete, and the filter replacement cost is high. Product representative: European brands such as Honeywell.
The second largest category: active purification class (no filter type)
The active sterilization principle based on these products can be divided into silver ion technology, negative ion technology, low -temperature plasma technology, light touch media technology and net ions ions technology.
The first generation, silver ion purification technology. Simply put, it is the effect of blowing silver block ionization into the air to play a bactericidal effect. The cost of disadvantages is high, the killing rate of bacteria is low, and there is almost no killing characteristics to the virus. Product representative: Early Panasonic products.
The second generation, negative ion technology. The main principle is to use electrostatic release of negative ions to adsorb the dust in the concentrated air to reduce the dust reduction. At the same time, negative ions also have the effect of ionization into oxygen in the air. It has a certain killing effect on bacteria. Low. Product representatives: Yadu, Philips.
The third generation, low temperature plasma technology. The main principle is that by the discharge voltage of the gas to the gas to the gas, the gas is broken down, producing a variety of strong oxidized low -temperature plasma, and decomposing the touched pollutants in a very short time. This technology is generally used for industrial exhaust gas treatment, and secondary pollution is generated after chemical reactions. If it is applied to the home air purifier, it is necessary to do human safety testing and corresponding secondary pollution treatment technology.
The fourth generation, light touch media technology. Light Cataracts actually use semiconductor to release the technology of free radicals with strong oxidation power under the light of light. The advantage of this technology is that the cost of the product is low, and the disadvantage is that the free radical activity causes the short time to stay in the air, and the killing effect of the virus and bacteria is also limited. Product representative: Dajin.
The fifth generation, net ion cluster technology. Sharp Global Patent Technology in 2000. It is a technology that directly electrizes the water molecules in the air into H free radicals and OH free radicals, and then wraps water molecules. OH free radicals have more than ozone for viruses and bacteria, and the existence time in the air is longer than oxygen. The net ion group ion technology enables OH free radicals to wrap a layer of water molecules to maintain its existence time in the air. At the same time, the water of bacteria and viruses can be used to kill bacteria and viruses more quickly. This technology is currently recognized internationally recognized medical space purification technology, and it is also the only space purification technology that can be used to H1N1, H1N5 bird flu, and SARS killing rates of more than 99%. Product representative: Sharp.
The third category: dual purification category (active purification passive purification)
The main representative brand of this type of purifier: (1) Sharp (filter net ion group technology); (2) Bruce Yal (filter negative ion technology); (3) Philips
(filter negative ion technology).
This is a brief content, you can take a look at the detailed air purifier knowledge on the
website.
Zhang, the general manager of Shijiazhuang, the designated enterprise of Shijiazhuang Formaldehyde Testing and Management, said that with the general manager of the better environmental protection engineering Co., Ltd., the air purifier has become a must -have for many families as the "haze economy" is heating up rapidly. Data show that in the next five years, the market capacity of air purifiers will increase at a rate of 30%per year. Under the needs of a strong market, various relevant manufacturers compete in this field and launched various functions of purifiers. However, the reporter found in the survey that although there are many categories of the market, there are currently no uniform certification standards. Various manufacturers have different publicity on efficacy, and consumers are foggy in buying. People in the industry generally call for the air purifier industry to urgently need to introduce a unified national standard.
The air purifier industry has invested in the blue ocean
"The air purifier industry is the rising industry in China, and the potential is huge." Manager Zhang introduced.
In it is understood that the air purifier originally purchased the air purifier to remove formaldehyde and purify the air that lived after just renovation. With people's attention to "haze", various air purifiers such as haze removal function and release of net ionic functions have entered the consumer market. This trend is immediately favored by capital. The air purifier industry has now become a new investment Hot spots.
In addition to the large market space, the profit is also very considerable. The person in charge of a new brand air purifier enterprise introduced to reporters that at first the decision to enter the air purifier industry was attracted by the 50%profit in the industry. However, it was discovered that the industry's 50%profit was quite conservative. The person told reporters that no matter what the product has, the cost of a air purifier is 800 yuan, but the market price can be sold for 2000 ~ 5,000 yuan, and the profit space is about 300%.
has always known that Chinese home appliance companies have always been known for their response. Once the new segment industry has risen, it will swarmed up. This phenomenon is confirmed in the air purifier industry. At present, major household appliance companies have basically been established in the field of air purifier.
If surveys from reporters, the principles of purification products of major entrepreneurs at present are different. According to Sharp, the new products of the air purifier it launched are cleaning the net ion cluster technology, that is, a net ion group generator is installed inside the product, which can release a high concentration of net ion group ions. The person in charge of the Midea air conditioner is called its air purifier using an high -efficiency tower structure filter, which can purify high -frequency three -dimensional circulation. Some other companies use activated carbon filter to filter, and some companies also combine the function of humidification and purification into one.
The reporter visited a number of stores for investigation and found that the price of air purifiers of various brands ranges from thousands of yuan to tens of thousands of yuan, and its functions and types are different. From the traditional activated carbon filter elements Essence Various brands have also vigorously promoted "aldehydes" as a selling point, and the purification effect of its promotion is even more godly. Publicity advertisements such as "formaldehyde decline rate of 99.7%", "99.36%of formaldehyde 99.36%", "pure life, opening the state -free realm" and other promotional advertisements can be seen everywhere at the counter.
The publicity and exaggeration of poor results
A few days ago, the General Administration of Quality Supervision, Inspection and Quarantine announced the 2015 product quality state supervision and random inspection plan, involving 182 products. Among them, the air purifier was first included in the national supervision random inspection plan.
If regulatory policies tightened from several unsatisfactory random check results. The local quality supervision departments have repeatedly conducted spot checks on air purifiers that many products cannot achieve the effect of purifying air, but they will produce a certain toxicity. The effect of formaldehyde is very different from the marking value.
The response to the manufacturer said that the removal rate of formaldehyde is low because the machine does not run enough time. If it is long enough, the purification rate can reach 90%.石家庄甲醛检测治理定点企业石家庄比好更好环保工程有限公司总经理张总表示，同样是声称“甲醛净化效果能达到98%”，有的净化器只需要一两个小时就能达到，而有The purifier takes six hours, or even longer. Although the promotional value can be achieved in the end, the actual significance is not great. Many companies are playing text games intentionally, exaggerating the publicity function.
For the haze -removing air conditioner, Zhang also believes that whether the air conditioner can remove PM2.5 particles depends on the structure inside the air conditioner. The module that removes formaldehyde must not be eliminated by PM2.5. Because modules absorb formaldehyde is a process of chemical decomposition. The removal of PM2.5 particles is mainly adsorbed through high -efficiency filter, which is a process of physical treatment. "Therefore, the so -called removing formaldehyde is definitely unscientific to be able to remove PM2.5." Mr. Zhang reminded.
The national standards in the industry urgently need to be introduced
The industry situation is chaotic and rapid expansion, which has no great relationship with industry standards. It is understood that, for air purifier products, the state has launched corresponding national compulsory standards. The recommended national standards are also based on corporate data as the basis for testing and evaluation. Therefore, the current purification rate data of various companies is not tested under the same conditions, which gives many companies a chance.
In addition, some local industry certification testing institutions have also emerged. Many certification testing institutions do not have the qualifications of the air purifier industry. According to industry insiders, some local certification testing agencies claim that they are qualified for certification, but during the certification process, if certain technical indicators do not meet the standard, after paying a certain amount of "testing costs" or "self -inspection costs", Technical indicators can change greatly.
The consumers who buy products on the market will find that there are a variety of certification testing agencies. For example, a Woxun car air purifier provides a certificate of air purification issued by the environment and health related products of the China Disease Control and Control Center; Philips issued the inspection and demonstration of the American Electrical Appliances Association; What is issued by the brand is a certificate of qualifications for the air purification effect of the local quality supervision department.
The general manager of Shijiazhuang, the fixed -point enterprise of Shijiazhuang formaldehyde testing and governance, Zhang, general manager of Shijiazhuang better environmental protection engineering Co., Ltd. The bottom test will provide a strong data reference for the decision -making department, and the development of the industry will speed up.
The general manager Zhang Shijiazhuang's fixed -point enterprise Shijiazhuang better environmental protection engineering Co., Ltd., Mr. Zhang, told reporters that the new national standard for air purifiers in 2015 is about to be introduced. This will not only help promote corporate product upgrade and technological improvement It will also provide important reference for consumers to buy and identify products.