Cleanout header for multi oil furnaces

In a multi oil furnace having an external cabinet shell having a front wall and a rear wall, said front wall having a door pivotally mounted thereon for internal access to said cabinet shell, said door being movable between an opened position and a closed position and defining a burner opening therethrough;

• an elongated burner chamber supported within said cabinet shell in alignment with said burner opening and being oriented longitudinally between said front and rear walls for the burning of a flame therewithin to generate heat;
• a burner assembly mounted on said front door and being operably coupled to means for providing a flow of air and a flow of used oil, said burner assembly being operable to ignite a combined flow of air and used oil to fire a flame through said burner opening into said burner chamber;
• a heat exchanger supported within said cabinet shell to circulate exhaust gases from said burner chamber within said cabinet shell, said heat exchanger including first and second banks of conduits;
• and an exhaust opening formed in said cabinet shell in flow communication with said heat exchanger to allow exhaust gases to exit said cabinet shell, the improvement comprising:
• said door being sealed against said burner chamber when in said closed position, said cabinet shell defining a front header adjacent said door and encircling said burner chamber for interconnecting said first and second banks of conduits in flow communication, said burner chamber extending through said front header such that said exhaust gases flowing through said front header from said first bank to said second bank must flow around said burner chamber.

A multi oil furnace comprising:

• an external cabinet shell having a door pivotally mounted thereon and being registerable with a front opening allowing internal access to said cabinet shell, said door being movable between a closed position and an opened position and having a burner opening therethrough, said door including a first sealing surface engageable with said burner chamber and a second sealing surface engageable with said lip;
• an elongated burner chamber supported within said cabinet shell in alignment with said burner opening for the burning of a flame therewithin to generate heat, said burner chamber being sealed against said door when in said closed position;
• a burner assembly mounted on said front door and being operably coupled to means for providing a flow of air and a flow of used oil, said burner assembly being operable to ignite a combined flow of air and used oil to fire a flame through said burner opening into said burner chamber;
• a heat exchanger supported within said cabinet shell to circulate exhaust gases from said burner chamber within said cabinet shell, said heat exchanger including first and second banks of conduits;
• and
• a front header adjacent said door and encircling said burner chamber for interconnecting said first and second banks of conduits in flow communication, said burner chamber extending through said front header such that said exhaust gases flowing through said front header from said first bank to said second bank must flow around said burner chamber, said front header including a lip extending around the circumference thereof, said lip being sealable against said door when in said closed position.

A multi oil furnace comprising:

• an external cabinet shell having a door pivotally mounted thereon for covering a front opening for internal access to said cabinet shell, said door being movable between a closed position and an opened position and having a burner opening therethrough;
• an elongated burner chamber supported within said cabinet shell in alignment with said burner opening for the burning of a flame therewithin to generate heat, said burner chamber being sealed against said door when in said closed position;
• a burner assembly mounted on said front door and being operably coupled to means for providing a flow of air and a flow of used oil, said burner assembly being operable to ignite a combined flow of air and used oil to fire a flame through said burner opening into said burner chamber;
• a heat exchanger supported within said cabinet shell to circulate exhaust gases from said burner chamber within said cabinet shell, said heat exchanger including first and second banks of conduits;
• and
• a front header adjacent said door to interconnect said first and second banks of conduits, said burner chamber extending through said front header such that said exhaust gases flowing through said front header from said first bank to said second bank must flow around said burner chamber;
• said front header including a lip extending around the circumference thereof, said lip being sealable against said door when in said closed position, said door including a first sealing surface engageable with said burner chamber and a second sealing surface engageable with said lip, said first and second sealing surfaces being offset longitudinally.

In a multi oil furnace having an external cabinet shell having a front wall and a rear wall, said front wall having a door pivotally mounted thereon for internal access to said cabinet shell, said door being movable between an opened position and a closed position and defining a burner opening therethrough;

• an elongated burner chamber supported within said cabinet shell in alignment with said burner opening and being oriented longitudinally between said front and rear walls for the burning of a flame therewithin to generate heat;
• a burner assembly mounted on said front door and being operably coupled to means for providing a flow of air and a flow of used oil, said burner assembly being operable to ignite a combined flow of air and used oil to fire a flame through said burner opening into said burner chamber;
• a heat exchanger supported within said cabinet shell to circulate exhaust gases from said burner chamber within said cabinet shell, said heat exchanger including first and second banks of conduits;
• and an exhaust opening formed in said cabinet shell in flow communication with said heat exchanger to allow exhaust gases to exit said cabinet shell, the improvement comprising:
• said door being sealed against said burner chamber when in said closed position, said cabinet shell defining a front header adjacent said door to interconnect said first and second banks of conduits, said burner chamber extending through said front header such that said exhaust gases flowing through said front header from said first bank to said second bank must flow around said burner chamber;
• and
• said front header including a lip extending around the circumference thereof, said lip being sealable against said door when in said closed position and being spaced below said second bank of conduits to allow ash to accumulate within said front header.

A multi oil furnace comprising:

• an external cabinet shell having a door pivotally mounted thereon and being registerable with a front opening allowing internal access to said cabinet shell, said door being movable between a closed position and an opened position and having a burner opening therethrough, said door including a first sealing surface engageable with said burner chamber and a second sealing surface engageable with said lip;
• an elongated burner chamber supported within said cabinet shell in alignment with said burner opening for the burning of a flame therewithin to generate heat, said burner chamber being sealed against said door when in said closed position;
• a burner assembly mounted on said front door and being operably coupled to means for providing a flow of air and a flow of used oil, said burner assembly being operable to ignite a combined flow of air and used oil to fire a flame through said burner opening into said burner chamber;
• a heat exchanger supported within said cabinet shell to circulate exhaust gases from said burner chamber within said cabinet shell, said heat exchanger including first and second banks of conduits;
• and
• a front header adjacent said door to interconnect said first and second banks of conduits, said burner chamber extending through said front header such that said exhaust gases flowing through said front header from said first bank to said second bank must flow around said burner chamber, said front header including a lip extending around the circumference thereof, said lip being sealable against said door when in said closed position, said first and second banks of conduits being accessible through said front opening when said door is moved to said opened position.