Comprehensive discussion of the working principle and characteristics of GLED

Cai Zuquan, the father of China's electric light source, said: "We deeply feel that the light bulb is relatively easy to light up and it is extremely difficult." For the development of GLED, it is relatively easy to make it light, to make it better, to achieve The realm of "incandescent lamp appearance, energy-saving lamp effect, and electrodeless lamp life" obviously has a difficult journey!

Below we will give a comprehensive introduction to the working mechanism of GLED and its substantive characteristics.

First, the working principle:

1. Figure 1 is a schematic diagram of e-spinning discharge, in which a is an anode and c is a cathode. The GLE is preferably composed of an Ω-shaped cathode spiral and a cylindrical anode in the cavity; the top arc portion of the Ω-shaped cathode spiral is coated with an oxide electron powder, and the Ω-shaped cathode spiral is coated with an electric vacuum zirconium powder on both sides. The columnar anode resides in the center of the inner chamber; the working gas is the same as the other discharge lamps.

2. The electrons are emitted from the hot spot at the top arc portion of the Ω-shaped cathode spiral. Due to the repulsive action of the nearby cathode, the electrons have a large angular momentum when leaving the hot spot, so that most electrons will not be hit immediately. On the anode, into the symmetrical logarithmic electric field established by the columnar anode and the Ω cathode (near the stem side), continuous e-shaped spiral orbital motion has a long mean free path (up to 10 meters). During the movement of electrons into the e-shaped spiral orbit, the mercury vapor is excited, the electrons also lose energy, the orbit is gradually reduced, and finally falls onto the columnar anode.

3. The mercury ions generated by the mercury vapor are excited by the non-uniform electric field, so that the mercury ions also have a large enough angular momentum, so that most of the mercury ions will not hit the hot spot immediately, but enter the columnar anode. In the fan-shaped radial electric field established with the Ω cathode (away from the side of the stem), elliptical orbital motions of different sizes are continuously made with the hot spot as the focus (the ellipses are in the wick due to the repulsive action of the columnar anode on the mercury ions) The outer side also has a long mean free path. During the elliptical orbital movement of mercury ions, mercury vapor is continuously excited and ionized, and a large number of mercury atoms are transitioned to emit ultraviolet rays to form an arc discharge ball. Mercury ions also lose energy due to constant excitation and transition, and the orbit is gradually reduced, and the e-shaped spiral orbital motion is also completed, and finally falls to the hot spot of the Ω cathode.

4. Due to the interaction between the plasmas (the same kind of particles repel each other, the heterogeneous particles attract each other), electrons and mercury ions have another e-shaped spiral orbit advancement at each moment of the e-shaped spiral orbital discharge. That is, the e-spin motion, so that the e-spinning discharge is completed, and a perfectly integrated arc discharge ball is produced!

Second, the characteristics of the description

GLED has the appearance of incandescent lamp, energy-saving lamp effect and life of electrodeless lamp, as follows:

1. incandescent appearance

It is obvious that the shape of the integrated arc-discharge ball excited by the GLED's e-spinning discharge matches the traditional incandescent bulb shell.

2. Energy-saving lamp effect

The reason why energy-saving lamps are energy-saving is mainly the use of newly developed rare earth fluorescent materials (three primary color phosphors). The compact fluorescent lamp-energy-saving lamp produced by the newly developed rare earth trichromatic phosphor realizes a better uniformity of high luminous efficiency and high color rendering, and can replace the incandescent lamp with it, and can achieve a certain energy saving effect. This energy-saving effect is only because its glass tube is coated with three primary color phosphors, which makes the color feel fresh and bright, like the brightness is increased by 30%, and has nothing to do with the design of the lamp!

When the energy-saving lamp is turned on at a high frequency, the luminous efficiency of the lamp is significantly higher than that at 50 (60) Hz. This is due to the disappearance of the oscillation of the electrode in the half cycle as the anode, which reduces the electrode drop loss, rather than the efficiency of the positive column region. Studies on some fluorescent lamps have found that the luminous efficiency of fluorescent lamps can be increased by 10% when the AC power supply frequency is increased from 50 Hz to above 20 kHz.

GLED adopts DC lighting, the electrode does not oscillate at all, and the bulb is also coated with three primary color phosphors, which can be achieved by energy saving of about 40%.

3. Induction lamp life

The return of the emitter coated by the discharge lamp means that the molecules of the emitted material are ionized into positive ions after leaving the cathode, and the emitted matter is returned to the cathode under the action of an electric field directed to the cathode. In the case where the cathode thermal emission capability is sufficiently large, about 85 to 90% of the thermally evaporated emission material returns to the cathode, which greatly reduces the rate of emission of the emitted material.

GLED adopts DC lighting, the columnar anode points to the Ω cathode and has a constant DC electric field. The thermal evaporation of the emitting material is about 85~90% returning to the cathode, which makes the cathode electron powder almost no loss, and its life is equivalent to that of the electrodeless lamp. of.

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