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Microwave sulfur lamp based on quarter lambda double-cone coaxial resonant cavity discharge

A technology of coaxial resonant cavity and double cone, applied in the direction of discharge lamps, circuits, electrical components, etc., can solve the problems of low efficiency of lamps and achieve the effects of compact structure, improved efficiency and strong practicability

Inactive Publication Date: 2017-03-29
李碧霞
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, some coaxial resonators have been introduced to be used in microwave light sources, but the light transmission part of the surface of the general coaxial cavity only accounts for 1 / 5, and the efficiency of the lamp is not high.

Method used

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  • Microwave sulfur lamp based on quarter lambda double-cone coaxial resonant cavity discharge
  • Microwave sulfur lamp based on quarter lambda double-cone coaxial resonant cavity discharge

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Embodiment

[0024] Such as figure 1 As shown, a microwave sulfur lamp based on 1 / 4λ biconical coaxial resonator discharge, including a magnetron 2, a first conical waveguide 4, a second conical waveguide 10, an electrodeless bulb 1, a quartz rod 11, and a transition joint 12 And the micro-motor 13, the first conical waveguide 4 gradually increases from the small mouth end to the large mouth end to form a horn shape, the small mouth end of the first conical waveguide 4 is provided with a first conical base 3, and the center of the magnetron 2 has a magnetron antenna 6 , the magnetron antenna 6 passes through the first conical base 3 of the first conical waveguide 4 and is placed inside the first conical waveguide 4 . The second conical waveguide 10 gradually increases from the small mouth end to the large mouth end to form a horn shape. The small mouth end of the second conical waveguide 10 is provided with a second conical base 8, and the large mouth end of the first conical waveguide 4 i...

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Abstract

The invention discloses a microwave sulfur lamp based on quarter lambda double-cone coaxial resonant cavity discharge. The microwave sulfur lamp comprises a double-cone coaxial cavity, a magnetron with an emission antenna, a medium reflection shield and an electrodeless bulb. The double-cone coaxial cavity comprises an external conductor and an internal conductor, the external conductor is composed of a first conical waveguide and a second conical waveguide disposed on a first cone in a coaxial superposed mode, the internal conductor is composed of a magnetron antenna and an antenna extending segment, and the height of the antenna extending segment is properly extended so that resonant conditions of the quarter lambda coaxial cavity can be satisfied; and through arrangement of the second conical waveguide and introduction of minute surface aluminum with a superhigh reflecting rate, on one hand, the electric field intensity of discharge at the electrodeless bulb is effectively improved and the luminescence efficiency of plasma is enhanced accordingly, and on the other hand, through cooperation with the medium reflection shield, more than 90% of light can be led out from the cavity and the efficiency of a light fixture is greatly improved.

Description

technical field [0001] The invention relates to the field of electrodeless lamp electric light sources, in particular to a microwave sulfur lamp based on 1 / 4λ biconical coaxial resonant cavity discharge. Background technique [0002] The core technology of microwave light sources is microwave resonant cavity technology. To design a microwave light source with good performance, it is necessary to design a microwave resonant cavity with high quality factor Q value and high light transmittance. Americans transferred high-power microwave sulfur lamp technology to LG at a high price at the beginning of this century, and at the same time started to develop microwave light sources that drive dielectric resonators with semiconductor microwave sources. They succeeded and launched 150W-500W LEP products. However, this kind of microwave light source also has shortcomings, mainly as follows: 1. The current price of semiconductor microwave light source technology is relatively high, so t...

Claims

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Application Information

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IPC IPC(8): H01J65/04
CPCH01J65/04
Inventor 李碧霞金方悦江浩
Owner 李碧霞
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