Exhaust as purifying method, exhaust gas filter, and exhaust gas filter purifying apparatus using same

A method of purifying exhaust gas, the method comprising:

• (a) providing an exhaust gas filter comprising:
• an outer peripheral wall;
• a throughhole diaphragm formed into a honey-comb shape within said outer peripheral wall to partition a plurality of throughholes;
• a sealing portion formed on an end of said throughholes which is on an exhaust gas inlet side of the gas filter, said sealing portion being formed into a checkered pattern on the end on which said sealing portion is formed;
• and
• a second sealing portion formed in a subplurality of said throughholes which are adjacent to said outer peripheral wall and said sealing portion;
• and
• (b) collecting particulates from the exhaust gas in the exhaust gas filter so as to make a quantity of the particulates collected in ones of said plurality of throughholes which are adjacent to said outer peripheral wall of said exhaust gas filter and on said throughhole diaphragm less than a quantity of the particulates collected in other portions of the exhaust gas filter.

An exhaust gas filter comprising:

• an outer peripheral wall;
• a throughhole diaphragm formed into a honey-comb shape within said outer peripheral wall to partition a plurality of throughholes;
• a sealing portion formed on an end of said throughholes, said sealing portion being formed into a checkered pattern on the end on which said sealing portion is formed;
• and
• a second sealing portion formed in a subplurality of said throughholes which are adjacent to said outer peripheral wall and said sealing portion.

An exhaust gas filter purifying apparatus comprising:

• an exhaust gas filter comprising:
• an outer peripheral wall;
• a throughhole diaphragm formed into a honey-comb shape within said outer peripheral wall to partition a plurality of throughholes:
• a sealing portion formed on an end of said throughholes, said sealing portion being formed into a checkered pattern on the end on which said sealing portion is formed;
• and
• a second sealing portion formed in a subplurality of said throughholes which are adjacent to said outer peripheral wall and said sealing portion;
• a container housing said exhaust gas filter, the container having a first side and a second side;
• an exhaust gas inlet pipe formed on the first side of said container;
• an exhaust gas discharge pipe formed on the second side of said container;
• temperature detecting means for detecting a temperature of said exhaust gas filter;
• heating means for heating said exhaust gas filter;
• and
• a device control section for controlling said heating means in response to the temperature of said exhaust gas filter detected by said temperature detecting means.