Title:
GLOWPLUG, PRODUCTION METHOD THEREOF AND HEATING DEVICE
Document Type and Number:
WIPO Patent Application WO/2011/162074
Kind Code:
A1
Abstract:
The disclosed glowplug (1) is provided with a cylindrical tube (7) that is closed at the tip, a heating coil (9) that is inserted into the tube (7), and a seal (11) that is provided to the open rear end of the tube (7) and seals the tube (7). The heating coil (9) is formed by a metal member that has tungsten (W) or molybdenum (Mo) as the primary component and the tube (7) is formed from an alloy that contains 0.5-5.0 mass% aluminium (Al) and 20-40 mass% chromium (Cr). Due to the tube (7) containing Al and Cr in designated amounts, as well as the tube having high anti-oxidation properties, the oxygen partial pressure within the tube (7) is reduced and the oxidation of the heating coil (9) can be controlled. As a result, the durability of both the heating coil (9) and the tube (7) is increased and high temperature heating over a long period is possible.
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Inventors:
YATSUYA Yosuke (14-18, Takatsuji-cho, Mizuho-ku, Nagoya-sh, Aichi 25, 〒4678525, JP)
八谷 洋介 (〒25 愛知県名古屋市瑞穂区高辻町１４番１８号 日本特殊陶業株式会社内 Aichi, 〒4678525, JP)
SAKURAI Toshiyuki (14-18, Takatsuji-cho, Mizuho-ku, Nagoya-sh, Aichi 25, 〒4678525, JP)
桜井 利之 (〒25 愛知県名古屋市瑞穂区高辻町１４番１８号 日本特殊陶業株式会社内 Aichi, 〒4678525, JP)
NARITA Saori (14-18, Takatsuji-cho, Mizuho-ku, Nagoya-sh, Aichi 25, 〒4678525, JP)
成田 さおり (〒25 愛知県名古屋市瑞穂区高辻町１４番１８号 日本特殊陶業株式会社内 Aichi, 〒4678525, JP)
八谷 洋介 (〒25 愛知県名古屋市瑞穂区高辻町１４番１８号 日本特殊陶業株式会社内 Aichi, 〒4678525, JP)
SAKURAI Toshiyuki (14-18, Takatsuji-cho, Mizuho-ku, Nagoya-sh, Aichi 25, 〒4678525, JP)
桜井 利之 (〒25 愛知県名古屋市瑞穂区高辻町１４番１８号 日本特殊陶業株式会社内 Aichi, 〒4678525, JP)
NARITA Saori (14-18, Takatsuji-cho, Mizuho-ku, Nagoya-sh, Aichi 25, 〒4678525, JP)
成田 さおり (〒25 愛知県名古屋市瑞穂区高辻町１４番１８号 日本特殊陶業株式会社内 Aichi, 〒4678525, JP)
Application Number:
JP2011/062373
Publication Date:
December 29, 2011
Filing Date:
May 30, 2011
Export Citation:
Assignee:
NGK SPARK PLUG CO., LTD. (14-18, Takatsuji-cho Mizuho-ku, Nagoya-sh, Aichi 25, 〒4678525, JP)
日本特殊陶業株式会社 (〒25 愛知県名古屋市瑞穂区高辻町１４番１８号 Aichi, 〒4678525, JP)
YATSUYA Yosuke (14-18, Takatsuji-cho, Mizuho-ku, Nagoya-sh, Aichi 25, 〒4678525, JP)
八谷 洋介 (〒25 愛知県名古屋市瑞穂区高辻町１４番１８号 日本特殊陶業株式会社内 Aichi, 〒4678525, JP)
SAKURAI Toshiyuki (14-18, Takatsuji-cho, Mizuho-ku, Nagoya-sh, Aichi 25, 〒4678525, JP)
桜井 利之 (〒25 愛知県名古屋市瑞穂区高辻町１４番１８号 日本特殊陶業株式会社内 Aichi, 〒4678525, JP)
NARITA Saori (14-18, Takatsuji-cho, Mizuho-ku, Nagoya-sh, Aichi 25, 〒4678525, JP)
日本特殊陶業株式会社 (〒25 愛知県名古屋市瑞穂区高辻町１４番１８号 Aichi, 〒4678525, JP)
YATSUYA Yosuke (14-18, Takatsuji-cho, Mizuho-ku, Nagoya-sh, Aichi 25, 〒4678525, JP)
八谷 洋介 (〒25 愛知県名古屋市瑞穂区高辻町１４番１８号 日本特殊陶業株式会社内 Aichi, 〒4678525, JP)
SAKURAI Toshiyuki (14-18, Takatsuji-cho, Mizuho-ku, Nagoya-sh, Aichi 25, 〒4678525, JP)
桜井 利之 (〒25 愛知県名古屋市瑞穂区高辻町１４番１８号 日本特殊陶業株式会社内 Aichi, 〒4678525, JP)
NARITA Saori (14-18, Takatsuji-cho, Mizuho-ku, Nagoya-sh, Aichi 25, 〒4678525, JP)
International Classes:
F23Q7/00
Attorney, Agent or Firm:
KAWAGUCHI Mitsuo (48KT Bldg. 302, 9-37 Meieki 3-chome, Nishi-ku, Nagoya-sh, Aichi 45, 〒4510045, JP)
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Claims: