Furnace assembly

A furnace comprising:

• an outer housing defining an inner cavity and wherein said cavity is at least partially divided into an upper chamber and a lower chamber, and
• a chimney having an opening substantially aligned with said lower chamber;
• at least one burner extending into said lower chamber;
• at least one burner extending into said upper chamber;
• and
• a passageway located proximate to said first end extends between said lower chamber and said upper chamber;
• and
• wherein said furnace includes a first section adjacent to said entrance and wherein said passageways are located within said first section, a second section adjacent to said first section and extending away from said first end, a third section adjacent to said second section and wherein said chimneys are located in said third section and a fourth section extending away from said third section.

A furnace comprising:

• an outer housing defining an inner cavity and wherein said cavity is at least partially divided into an upper chamber and a lower chamber and
• a chimney having an opening substantially aligned with said lower chamber;
• at least one burner extending into said lower chamber;
• at least one burner extending into said upper chamber;
• and a passageway located proximate to said first end extends between said lower chamber and said upper chamber;
• and
• wherein said includes a first section adjacent to said entrance and wherein said passageways are located within said first section, a second section adjacent to said first section and extending away from said first end, a third section adjacent to said second section and wherein said chimneys are located in said third section and a fourth section extending away from said third section;
• and
• wherein said at least one burner extending into said upper chamber includes a plurality of upper chamber burners on a first side and a plurality of upper chamber burners on an opposing second side in said second section, and wherein said plurality of upper burners on said first side are staggered relative to said plurality of upper chamber burners on said second side.

A furnace comprising:

• an outer housing defining an inner cavity and wherein said cavity is at least partially divided into an upper chamber and a lower chamber, and
• a chimney having an opening substantially aligned with said lower chamber;
• at least one burner extending into said lower chamber;
• at least one burner extending into said upper chamber;
• and
• a passageway located proximate to said first end extends between said lower chamber and said upper chamber;
• and
• a first section adjacent to said entrance and wherein said passageways are located within said first section, a second section adjacent to said first section and extending away from said first end, a third section adjacent to said second section and wherein said chimneys are located in said third section, and wherein said an inner side of said outer housing is lined with furnace bricks in said upper chamber and said lower chamber in said first section.

A furnace assembly comprising:

• a housing having a longitudinal extent and a latitudinal extent and a top and a bottom and a first side and a second side and extending along the longitudinal extent to define a cavity;
• at least one chimney connected to said housing;
• at least one burner extending into said cavity;
• a plurality of tiles supported in a spaced relationship with said bottom of said housing and defining at least one lower chamber extending along the longitudinal extent for containing combustion of vapors along the chamber and directing the vapors from said cavity to said chimneys;
• and
• a passageway defined by said tiles extending through said tiles for evacuating the vapors from said cavity to said lower chambers.

A dewaxing furnace assembly for investment casting comprising:

• a housing having a longitudinal extent and a latitudinal extent and a top and a bottom and a first side and a second side and extending along an axis to define a cavity;
• at least one chimney connected to said housing;
• at least one burner extending into said cavity;
• a plurality of tiles supported in a spaced relationship with said bottom of said housing and defining at least one lower chamber extending along the longitudinal extent for containing combustion of wax vapors along the chamber and directing the wax vapors from said cavity to said chimneys;
• a passageway defined by said tiles extending through said tiles for evacuating the wax vapors from said cavity to said lower chambers;
• and
• at least one burner extending into said lower chambers for igniting wax vapors in said lower chambers.

A dewaxing furnace assembly for investment casting comprising:

• a housing having a longitudinal extent and a latitudinal extent and a top and a bottom and a first side and a second side and extending along the longitudinal extent to define a cavity;
• at least one chimney connected to said housing;
• a plurality of tiles supported in a spaced relationship with said bottom of said housing and defining at least one lower chamber extending along the longitudinal extent for containing combustion of wax vapors along the chamber and directing the wax vapors from said cavity to said chimneys;
• a passageway defined by said tiles extending through said tiles for evacuating the wax vapors from said cavity to said lower chambers;
• at least one burner extending into said lower chambers for igniting wax vapors in said lower chambers;
• a plurality of trays for carrying investment casting molds along said housing;
• and
• said trays each having at least one aperture for allowing heat to rise to molds on said trays and for allowing molten wax from the molds to drop through said trays into said lower chambers through said passageway.