| US 7,498,544 B2 | ||
| Firing furnace and method for manufacturing porous ceramic fired object with firing furnace | ||
| Takamitsu Saijo, Gifu (Japan); and Koji Higuchi, Gifu (Japan) | ||
| Assigned to IBIDEN Co., Ltd., Ogaki-shi, Gifu (Japan) | ||
| Filed on Dec. 22, 2005, as Appl. No. 11/313,733. | ||
| Application 11/313733 is a continuation of application No. PCT/JP2005/014317, filed on Aug. 04, 2005. | ||
| Claims priority of application No. 2004-245765 (JP), filed on Aug. 25, 2004. | ||
| Prior Publication US 2006/0245465 A1, Nov. 02, 2006 | ||
| Int. Cl. H05B 3/42 (2006.01); F27B 9/36 (2006.01); F27D 11/02 (2006.01) | ||
| U.S. Cl. 219—402 [219/388; 219/408; 219/411; 219/541; 373/128] | 29 Claims |
| 1. A firing furnace, connected to an external power supply, for firing a firing subject, the firing furnace comprising:
a housing including a firing chamber for accommodating the firing subject;
a plurality of heat generation bodies arranged in the housing and generating heat with power supplied from the external power
supply to heat the firing subject in the firing chamber;
a connection member for electrically connecting the external power supply and each heat generation body;
a fixing member attached to the housing and including an insertion hole for receiving the connection member;
an insulative member for sealing a space between the insertion hole and the connection member; and
a restriction structure, formed of an electrically conductive material, for restricting a flow of gas produced in the housing
directed through a gap between the fixing member and the connection member and toward the insulative member,
wherein the restriction structure is arranged so that the insulative member is hidden behind the restriction structure when
viewed from an inner side of the housing.
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