Compared with traditional light sources, electrodeless lamps are named because they have no obvious electrodes.
Working frequency
High-frequency electrodeless lamp: 2.65MHz, that is, 2650 KHz, generally bubble-shaped.
Low-frequency electrodeless lamp: 250KHz and 140KHz, generally ring-shaped.
light efficiency
Under the condition of color rendering index Ra=80:
The light efficiency of high frequency electrodeless lamp is generally 80lm/w.
The light efficiency of low-frequency electrodeless lamp is generally 85 lm/w, and the higher the power, the higher the light efficiency.
force
Power range of high frequency electrodeless lamp: 10W-200W
Low frequency electrodeless lamp power range: 20W-400W.
The shape of the lamp
High-frequency electrodeless lamp: mainly in various bulb shapes.
Low-frequency electrodeless lamps: mainly annular and rectangular, but also bulb-shaped.
electromagnetic interference
EMI electromagnetic interference
Electrodeless lamp products, regardless of high frequency and low frequency, can pass the electromagnetic interference detection like other electronic products as long as the circuit design is reasonable.
Electrodeless lamp is a high-tech product developed by applying the latest scientific and technological achievements in the fields of power electronics, plasma and magnetic materials. Magnetic core material is the most critical component in electrodeless lamp, and its performance directly determines the quality of electrodeless lamp.
principle
Working principle:
An electrodeless lamp consists of a high-frequency generator, a coupler and a bulb. The electromagnetic field of the high-frequency generator is inductively coupled into the lamp, so that the gas in the bulb is avalanche ionized to form plasma. When atoms excited by plasma return to the ground state, they will radiate ultraviolet rays. The fluorescent powder on the inner wall of the bulb is excited by ultraviolet rays to generate visible light.
trait
1, there is no filament and electrode in the bulb, and the service life of the product is more than 60000 hours.
2, high luminous efficiency, high frequency electrodeless lamp 80Lm/W, low frequency electrodeless lamp 85lm/w. ..
3. The color rendering index is above 80, and high-quality tricolor phosphor is used, so the color is not distorted.
4, wide voltage operation, voltage in 185V-255V can work normally.
5. The high-frequency working frequency is 2.65MHz, and the low-frequency working frequency is 230Hz, which is safe and has no stroboscopic effect.
6. Light attenuation is small, and the optical communication maintenance rate can reach 80% after 20,000 hours.
7. Instantaneous start-up and restart time is less than 0.5 seconds.
8. The starting temperature is low, the adaptive temperature range is wide, and it can start working normally at minus 25 degrees.
9. The power factor can be as high as 0.95 or above.
10, safe and reliable, environmentally friendly, and truly maintenance-free and replacement-free.
merits and demerits
merits and demerits
1, the high-frequency electrodeless lamp is small in size, and the shape of the bulb changes greatly, so it can be equipped with many lamps. The old lamps can also be used with a little modification, and the light efficiency is higher under the same power. The high-speed particle manifold in the bulb becomes a shield to prevent electromagnetic radiation. However, due to the limitation of bulb size, the power cannot be very large, and usually the power can only be 200W W W.
2. Low-frequency electrodeless lamp can be made more powerful because of the external coupler, which has a large volume and a very good heat dissipation effect. However, due to its large size, few lamps can be equipped, resulting in a certain lumen loss. In addition, external coupling increases the difficulty of solving EMI.
deficient
Several problems needing improvement in electrodeless lamp;
1, life of "electrodeless lamp":
The theoretical service life of electrodeless lamps is 60,000 hours, but in fact, if cheaper components, including electrolytic capacitors, are used, the service life of electrodeless lamps is only about16,000 hours in high temperature environment, so we can't just cite the theoretical service life to promote it. In particular, some electrodeless lamps with too low prices will definitely shorten their life.
2, "electrodeless lamp" light effect problem:
The theoretical light efficiency of electrodeless lamp is only 80Lm/W, while the actual product light efficiency is only 65lm/w ... And more energy in the light emitted by electrodeless lamp is concentrated in the visible light near the wavelength of 550nm, so even if the overall luminous flux is not as good as that of sodium lamp, the naked eye impression of electrodeless lamp will be brighter, which makes up for this deficiency.
3. The volume problem of "electrodeless lamp":
Because of the special structure, it is difficult to make electrodeless lamps small, which limits the electrodeless lamps from entering the home improvement market.
4. The cost of "electrodeless lamp":
Generally, the price of a set of conventional brand metal halide lamps is between 200-400, and the miscellaneous brands will be cheaper. However, even if the market price of an electrodeless lamp with guaranteed quality (including life span and light decay) drops sharply, it is still around 600-700, and the first-line brand may even be nearly 1,000 yuan, which makes the performance and energy saving of electrodeless lamps better, but many factories will build or replace energy-saving lamps because of investment. Therefore, if electrodeless lamps want to achieve the popularity of metal halide lamps or compact fluorescent lamps (commonly known as energy-saving lamps), manufacturers must carry out certain cost control under the premise of ensuring quality, so that more users can accept them, rather than only a few large enterprises or enterprises with better economic benefits will buy electrodeless lamps.
5, "electrodeless lamp" power factor and harmonic problems:
Manufacturers of "electrodeless lamps" advertise that their power factor is as high as 0.98 or higher. As we all know, power factor is a concept related to inductive or capacitive load. Because of the full-bridge rectifier, electrodeless lamps can easily reach this index, which is one of the reasons why many electrodeless lamps can replace metal halide lamps or sodium lamps with much higher power than themselves. However, in the actual market, there will also be electrodeless lamps with power factor less than this value. It is recommended to test it before buying.
6, "electrodeless lamp" high-power heat dissipation:
There has been no good breakthrough in the problem of high power of electrodeless lamps. As we know, the heat emitted by 170W sodium lamp with high luminous efficiency makes the temperature of the timing tube as high as 400℃ or even higher, while the quartz tube can work above 700℃ for a long time, so high temperature has little effect on its life. Although the heat of electrodeless lamp is only 100 degrees, the components of its electronic ballast are sensitive to heat, so it is necessary to effectively isolate the bulb temperature from the ballast, otherwise the service life will be affected. And from the common sense, the greater the power, the greater the calorific value. In order to ensure the service life, many electrodeless lamp manufacturers generally make the power of electrodeless lamps within 185W, and the conventional power is generally 165W, while the power of traditional sodium lamps can reach10000w, so there is still a lot of work to be done to realize the high power of electrodeless lamps. However, as an energy-saving product itself, the disadvantage of low power cannot be too high, but if the power can be improved, its application places will be greatly increased, such as pole lamps, remote spotlights, ultra-high factories over 18 meters and other places where it is difficult to see electrodeless lamps.
7. Standardization of "electrodeless lamp":
Because there is no unified national standard for electrodeless lamps, manufacturers generally adopt enterprise standards or refer to other lamps' standards in production, but according to relevant regulations, enterprise standards can only be used after being put on record by quality and technical supervision departments, which makes electrodeless lamp manufacturers have certain legal risks (enterprise standards are not put on record, etc.). ). Moreover, due to different standards, the electrodeless lamp ballast products of various manufacturers cannot be freely replaced, and customers cannot choose their own after-sales service units, so they can only choose suppliers. Most products are provided by dealers, and their cooperation with manufacturers will directly affect the after-sales protection of users, which is one of the reasons why many users often need to go to the manufacturers directly when choosing to buy electrodeless lamps.
8, "electrodeless lamp" misleading to energy saving:
Although electrodeless lamps can really save energy, they can't do the infinite energy-saving substitution advertised by some manufacturers or sellers. According to the actual test, even if the mirror lampshade with higher luminous efficiency is selected to replace the traditional metal halide lamp frosted cover, the metal halide lamp can only be replaced by 1:2 at most, that is, the metal halide lamp is replaced by 65438+250W electrodeless lamp, and it is better to replace the metal halide lamp with 165W to ensure better brightness or brightness. However, some salesmen of electrodeless lamps claim that 125W or even 85W can replace 400W metal halide lamps, which is a bit exaggerated. The actual conclusion can only be drawn by hanging lamp test.
9. The future of "electrodeless lamp" and "LED lamp":
Both "electrodeless lamp" and "LED lamp" are vying for the position of the fourth generation light source. Compared with electrodeless lamps, LED light source has a longer theoretical life, and its selling point is energy saving. Although the cost price of LED is much higher than that of electrodeless lamp, some policy guidance and subsidy funds are still biased towards LED, and its publicity advantage is much stronger than electrodeless lamp, which makes many people only know LED but not electrodeless lamp, let alone use it; Especially in some government-sponsored projects, energy-saving lighting products are often equivalent to LED, which makes electrodeless lamps have certain cost-effective advantages only when some enterprises buy them themselves. However, it is very difficult for an industry to become bigger and stronger, even if the products and technologies are no matter how good, under the new economic situation, without government policy support, which makes it difficult to see large-scale enterprises with electrodeless lamps at the aircraft carrier level. Even in places like Anhui, Chinese Academy of Sciences and Chinese University of Science and Technology were pioneers and institutions of electrodeless lamp technology in China many years ago. Electrodeless lamp enterprises still reduce their risks in the form of small batch production, order production or entrusted processing, and it is difficult to form a large-scale electrodeless lamp industrial cluster.
We expect that "electrodeless lamp" and "LED lamp" can replace "the third generation" HID lamp in the near future and truly become the ideal light source with "high efficiency and long life".
Detailed characteristics
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Long service life, high efficiency and energy saving.
Because there is no filament and electrode in the bulb, the life of the light source only depends on the electronic circuit of the lamp and the manufacturing process of the bulb, and the general life can reach 60,000 ~ 65,438+10,000 hours. High efficiency and energy saving. Maintenance-free, long service life, service life ≥60000 hours. Radiating the same luminous flux, the power consumption is only 1/6 of that of incandescent lamp, and the luminous efficiency reaches 65lm/w. Electrodeless lamp has no filament and electrode. The life of Konigkin's law mainly depends on the life of electrolytic capacitor and the natural attenuation of phosphor, which can reach more than 60,000 hours, 60 times that of incandescent lamp and 20 times that of halogen lamp. Compared with ordinary incandescent lamps, it saves more than 80% energy.
High color rendering
Using fluorescent tricolor powder, the electro-optical conversion efficiency is high, that is, the light efficiency is high, the color rendering index is greater than 80, the light is soft, the chromaticity of the light is close to sunlight, and the glare is low, showing the natural color of the illuminated object.
High power factor
The circuit is specially optimized, and the power factor is greater than 95%. Among them, the power factor of high-frequency electrodeless lamp can reach above 99%, with small harmonics and excellent electrical performance.
Frequency-free flash source
Because the working frequency is as high as 2.65MHz, it is regarded as "no stroboscopic effect at all", which will not cause eye fatigue and protect eye health.
Going green and environmental protection
The raw material is solid mercury, which will not pollute the environment even if it is broken, and the recovery rate is as high as 99%. It is a real green light source.
Low maintenance cost
Ordinary incandescent lamps, fluorescent lamps, energy-saving lamps and other gas discharge lamps all have filaments or electrodes, and the sputtering effect of filaments or electrodes is an inevitable component that limits the service life of lamps. The electrodeless lamp has no electrodes, and emits light by combining the electromagnetic induction principle and the fluorescent discharge principle, so there are no life-limiting elements, so the theoretical life of the light source is as long as 60,000 ~ 65,438+10,000 hours, which can greatly reduce the maintenance cost of replacing the light source, and is especially suitable for important places where it is difficult to replace lamps or high safety requirements.
Advantages and advantages
superiority
1, high efficiency and energy saving, light efficiency >; 75 mm/width
It saves energy by 80% compared with ordinary incandescent lamps, 60% compared with metal halide lamps and 20% compared with ordinary energy-saving lamps. 85W electrodeless lamp replaces 150W metal halide lamp (high pressure sodium lamp). Under the same visual conditions, the comprehensive energy saving is more than 60%; Installing the same number of lamps and using electrodeless lamps can reduce the current of the output circuit by more than 4 times and greatly reduce the capacity of the transformer.
2, shockproof, long service life
Because the bulb has no filament and no electrode, it works by high-frequency electromagnetic coupling and is not afraid of vibration. Its service life is 60 times that of incandescent lamp and 12 times that of metal halide lamp. The general service life is more than 60,000 hours, which can reduce frequent maintenance, greatly reduce the frequency and cost of replacing light sources, and save energy and money.
3, quick start
It can be started at low temperature, can be started and restarted immediately, and the starting time is less than 0.5 seconds, which is not limited by frequent switching, and there will be no obvious light attenuation caused by ordinary electrode discharge.
4, high power factor design
Power factor >; 0.98, the power consumption of the whole electrodeless lamp is very close to the input power. Low harmonic content, no interference to household appliances and no pollution to power grid. There is no radiation to the lighting space, which does not affect people's health, and the electromagnetic compatibility index meets the national standards.
5, environmental protection, no stroboscopic, good color rendering
The tricolor rare earth fluorescent powder for electrodeless lamp is used as the layer, and the color rendering index is greater than 80. The illuminated object presents natural color with good color reducibility, and it is a real green light source. Its working frequency is as high as 2.65MHZ, and the general lamp is 50HZ, so it is considered as "no stroboscopic effect at all" and will not cause eye fatigue after long-term use.
6. Optional color temperature and high installation adaptability.
From 2700 K to 6500 K, it can be selected by customers according to their needs, and can be made into colored light bulbs for garden decoration and lighting. The compact glass shell design makes the lamp design more free and can be installed in any direction without restrictions.
Advantages:
1, long-term ignition, difficult to replace
After years of long-term testing and inspection, the ignition life of electrodeless lamp can reach 654.38+ 10,000 hours. For places with difficult maintenance (such as high ceiling workshops, high-precision equipment workshops, tunnels, bridges, roads, energy, chemical related industries, etc.). ) and European and American countries with extremely high maintenance costs, its value and quality are highlighted.
2, light, color index requirements extremely high places
For glare, color temperature, color rendering and other indicators, electrodeless lamp has been completely ahead of all kinds of lighting products through the improvement of lamp structure, reflector design and light source technology. It has won high praise from customers in high-precision workshops, food processing and sales areas, textile printing and dyeing processing areas, open-air tennis courts and other sports venues.
3. Places with high energy-saving requirements
In terms of energy saving requirements, the electrodeless lamp has the characteristics of high initial light efficiency (the light efficiency of the light source exceeds 90lm/W) and small light attenuation after long-term lighting, which truly guarantees the excellent user experience of customers for 5 years.
4. Special lighting places
Electrodeless lamp manufacturers have been committed to developing a wider range of applications and lighting places, and there are successful cases and significant user improvements in the fields of plant lighting (red and blue spectrum lighting), livestock storage lighting, supporting low-voltage solar energy systems, and DC emergency power supply system lighting.
application area
Based on the characteristics of long service life, remarkable energy-saving effect, safety and environmental protection of electrodeless lamps.
Comparison of electrodeless lamp before and after use
Point, so it is suitable for factory workshops, school classrooms, libraries, greenhouses, vegetable and plant sheds, auditorium halls, conference rooms, ceilings of large shopping malls, extremely high factories, sports grounds, tunnels, traffic complex areas (street lights, sign lights, bridge lights), subway stations, railway station dangerous areas or lighting sewage lights, urban lighting floodlighting, landscape greening lighting, etc. It is especially suitable for high-risk and important lamps with difficulty in changing lamps and high maintenance costs.
Selection guide
Electrodeless lamp is based on the principle of electromagnetic induction, which transfers energy through magnetic field, unlike ordinary fluorescent lamp, which uses electrodes to convert external electric energy into energy needed for lamp internal work through electric field. Because the coupler is the key component to transfer energy, the quality of the magnetic tube used in the coupler is very important to the quality of the electrodeless lamp, so it is necessary to know what magnetic core is used in the lamp when choosing the electrodeless lamp.
Because the electrodeless lamp has no electrodes, there are no vulnerable components in the lamp tube, and the life of the whole system mainly depends on the electronic ballast, so the life of this lamp is very long, reaching more than 60 thousand hours. It is especially suitable for places with difficult and expensive lamp replacement and important places with high safety requirements. Such as tunnels, traffic complex areas, subway stations, factories with high ceilings, lighting in dangerous areas, halls, sports fields and so on.
Precautions for installation
When installing, the power supply must be cut off first to ensure safety.
Please make sure that the connection port is correct before starting the machine.
If abnormal work (self-extinguishing, flashing) is found, the power supply should be turned off immediately and removed for inspection by professionals. .
The bottom of the bulb (coupler base) and the fixture of the lamp must be firmly connected and closely contacted to ensure good heat dissipation.
The shielding wire between the bulb and the high frequency generator should not be lengthened or shortened.
During installation, the bulb and high frequency generator should be grounded separately.
No matter what kind of lamp is used, the lamp shell should be grounded.
When the light source is not connected to the lamp, the ignition time shall not exceed 15 minutes (let the lamp itself play the role of heat dissipation).
When the light bulb is on or just off, don't touch the light bulb directly with your hands to avoid burns.
Couplers and high-frequency generators cannot be changed casually.
Neither electrodeless lamp nor high frequency generator can be installed on lamps without fins.
Occasionally, the electrodeless lamp doesn't light up, or it goes out when it lights up. Please check the radiator of the lamp.
If the generator is installed in a closed electrical box, the upper cover of the generator can be removed.