Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
INDUCTION HEATING FURNACE
Document Type and Number:
Japanese Patent JP2008267704
Kind Code:
A
Abstract:

To provide an induction heating furnace installed with a furnace shell in the inside of an induction heating coil, capable of securing air-tightness with simple structure without increasing the size of the furnace and having furnace shell structure, without the risk of the occurrence of electrical discharges.

Air-tightness of an inner furnace shell 2 is secured, by making the furnace shell that comprises a non-conductive and flame-resistant material into a multilayered structure of double or more and introducing an inert gas into the space between the inner furnace shell 2 and an outer furnace shell 3. In this case, pressure in the space between the inner and outer furnace shells 2, 3 can be made higher than pressure of atmosphere inside the furnace of the inner furnace shell 2 to prevent leakage of the atmosphere inside the furnace, and water vapor can be mixed in the inert gas to be introduced so as to further prevent the occurrence of leakage.


Inventors:
KATAOKA TAKEHARU
KOGA SHIGENOBU
KIMURA TAKESHI
Application Number:
JP2007111824A
Publication Date:
November 06, 2008
Filing Date:
April 20, 2007
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
NIPPON STEEL CORP
International Classes:
F27D11/06; C21D1/00; C21D1/42; C21D1/74; C21D9/60; F27D7/02; F27D7/06
Domestic Patent References:
JP2006029674A2006-02-02
JPS5642796U1981-04-18
JPH05288473A1993-11-02
JP2005221132A2005-08-18
JPS61149100U1986-09-13
JPS5834944U1983-03-07
JPH0677610A1994-03-18
JPH10326923A1998-12-08
JP2006029674A2006-02-02
JPS5642796U1981-04-18
JPH05288473A1993-11-02
JP2005221132A2005-08-18
JP2003317912A2003-11-07
JP2008224058A2008-09-25
Attorney, Agent or Firm:
Atsushi Aoki
Takashi Ishida
Tetsuji Koga
Hiroshi Kamematsu
Nakamura Asayuki
Nagasaka Tomoyasu



 
Previous Patent: COOKER

Next Patent: CONTINUOUS HEATING FURNACE