Title:
DEVICE AND METHOD FOR MANUFACTURING GLASS PREFORM FOR OPTICAL FIBER
Document Type and Number:
WIPO Patent Application WO/2022/224804
Kind Code:
A1
Abstract:
This device for manufacturing a glass preform for an optical fiber comprises a tank for pressurizing a liquid starting material with a gas, a vaporizer for vaporizing the pressurized starting material, a burner for blowing out the starting material vaporized by the vaporizer and thus forming fine glass particles, and a supply pipe for supplying the starting material pressurized in the tank to the vaporizer, wherein the supply pipe is arranged so that, when the position vector, with respect to the inlet of the supply pipe, of the starting material located at an arbitrary position x inside the supply pipe at an arbitrary time point t is regarded as L(t) and the position vector, with respect to the inlet of the supply pipe, of the starting material after a minute time δt is regarded as L(t+δt), then the vertical component of the displacement vector δx(δt) = L(t+δt) - L(t) of the starting material is always equal to or greater than 0 with the vertical upward direction being positive.
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Inventors:
HAYAKAWA MASATOSHI (JP)
MORITA KEISEI (JP)
TOYOKAWA SHUHEI (JP)
MORITA KEISEI (JP)
TOYOKAWA SHUHEI (JP)
Application Number:
PCT/JP2022/016745
Publication Date:
October 27, 2022
Filing Date:
March 31, 2022
Export Citation:
Assignee:
SUMITOMO ELECTRIC INDUSTRIES (JP)
International Classes:
C03B37/018
Domestic Patent References:
| WO2019240232A1 | 2019-12-19 |
Foreign References:
| JPS565337A | 1981-01-20 | |||
| JP2017197402A | 2017-11-02 | |||
| JP2006327916A | 2006-12-07 |
Attorney, Agent or Firm:
SHIN-EI PATENT FIRM, P.C. (JP)
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