Study on gas flow characteristics in 5kW transverse flow CO2 laser with single discharge box

YANG Weihong; TANG Xiahui; XIAO Longsheng; ZHOU Yongquan

doi:10.7510/jgjs.issn.1001-3806.2014.05.007

LASER TECHNOLOGY > 2014 > 38(5): 608-613. > DOI: 10.7510/jgjs.issn.1001-3806.2014.05.007

YANG Weihong, TANG Xiahui, XIAO Longsheng, ZHOU Yongquan. Study on gas flow characteristics in 5kW transverse flow CO2 laser with single discharge box[J]. LASER TECHNOLOGY, 2014, 38(5): 608-613. DOI: 10.7510/jgjs.issn.1001-3806.2014.05.007

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Study on gas flow characteristics in 5kW transverse flow CO2 laser with single discharge box

1.
School of Optics and Electronics Information, Huazhong University of Science and Technology, Wuhan 430074, China;
2.
Department of Mechanical and Electrical Engineering, Shenzhen Institute of Information Technology, Shenzhen 518000, China

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Received Date: October 16, 2013
Revised Date: November 11, 2013
Published Date: September 24, 2014

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Abstract

In order to solve the problem of a traditional 5kW transverse CO2 laser with double discharge boxes, i.e., small wind entrance, low wind velocity and large size, a 5kW CO2 transverse laser with single discharge box was developed. Based on analysis of the flow field in the discharge area and gas dynamics, a lightweight aluminum centrifugal fan was designed on the premise of the same fan strength with entrance diameter of 382mm, outlet diameter of 451mm and volute width of 160mm. Then it was validated in experiments. The results show that, comparing with 5kW transverse laser with double discharge boxes, the power stability of 5kW CO2 transverse laser with single discharge box is improved. The average wind velocity of discharge area increases from 60.8m/s to 75.5m/s, the arc discharge area is reduced and the near-field intensity and uniformity is improved. The selection of lightweight aluminum fan and single discharge box decreases the weight and volume of the laser. The study is important and instructive for development of compact CO2 lasers with high power and small volume.
- lasers,
- transverse flow CO2 laser,
- gas dynamics,
- centrifugal blower,
- fluid analysis

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