Pellet fuel burning device
OwnerCarrol E. Bucknerinventor
Life of this patent
Estimating the term…
Abstract
A pellet fuel burner, such as a cooking grill, has a fire box with a generally open top plane. A pellet burner unit is disposed in the fire box below the cooking surface. A pellet feeding device opens into the fire box and is disposed so as to feed pellets into the burner unit. A pressure box has an inlet supplied with combustion air at a positive pressure. A plurality of outlets are provided in the pressure box and disposed so as to create a turbulent combustion air flow in the pellet burner unit. The outlets may include a first outlet disposed above the burner unit and a second outlet disposed below the burner unit. The turbulent combustion air flow and supply of pellets, particularly corn kernels from the pellet feeding device allow for a continuous sustained combustion of the fuel in the pellet burner.
Claims18
A pellet fuel cooking grill, comprising:
- a fire box having a generally open top plane, and a cooking surface disposed generally across said top plane;
- a pellet burner unit disposed within said fire box below said cooking surface;
- a pellet feeding device opening into said fire box and disposed so as to feed pellets into said burner unit;
- a pressure box having an inlet supplied with combustion air at a positive pressure, and a first outlet into said fire box disposed above said burner unit and configured so as to direct substantially all of the combustion air exiting therefrom down into said burner unit, said pressure box further comprising a second outlet into said fire box disposed below said burner unit and configured to direct combustion air up into said burner unit;
- and
- wherein a turbulent combustion air flow in generated through said burner unit by mixing of combustion air from said first and second outlets to sustain combustion of pellets within said burner unit.
A corn kernel fueled burner, comprising:
- a housing member;
- a fire box disposed within said housing having a generally open top plane;
- a corn kernel burner unit disposed within said fire box below said top plane;
- an automatic corn kernel feeding device opening into said fire box and disposed so as to feed corn kernels into said burner unit at a desired flow rate of kernels;
- and
- a pressure box having an inlet in communication with a blower and first and second outlets into said fire box disposed so as to direct combustion air streams from above and below directly into said burner unit such that the combustion air streams mix in said burner unit to create and maintain a turbulent combustion air flow through the corn kernels to sustain combustion of corn kernels within said burner unit.
A pellet fuel cooking grill, comprising:
- a fire box having a generally open top plane, and a cooking surface disposed generally across said top plane;
- a pellet burner unit disposed within said fire box below said cooking surface;
- a pellet feeding device opening into said fire box and disposed so as to feed pellets into said burner unit;
- a pressure box having an inlet supplied with combustion air at a positive pressure, and a first outlet into said fire box disposed above said burner unit and configured so as to direct combustion air down into said burner unit, said pressure box further comprising a second outlet into said fire box disposed below said burner unit and configured to direct combustion air up into said burner unit;
- wherein a turbulent combustion air flow in generated through said burner unit by said first and second outlets to sustain combustion of pellets within said burner unit;
- wherein said burner unit comprises a perforated pellet holding device generally surrounded by a combustion air chamber, said second outlet letting out into said combustion air chamber such that combustion air circulates within said combustion air chamber around and into said perforated holding device;
- and
- further comprising a combustion air flow diverting member disposed so as to direct combustion air from said second outlet downwards into said combustion air chamber.
A corn kernel fueled burner, comprising:
- a housing member;
- a fire box disposed within said housing having a generally open top plane;
- a corn kernel burner unit disposed within said fire box below said top plane;
- an automatic corn kernel feeding device opening into said fire box and disposed so as to feed corn kernels into said burner unit at a desired flow rate of kernels;
- a pressure box having an inlet in communication with a blower and first and second outlets into said fire box disposed so as to create and maintain a turbulent combustion air flow through the corn kernels to sustain combustion of corn kernels within said burner unit;
- wherein said burner unit comprises a perforated kernel holding device generally surrounded by a combustion air chamber, said second outlet letting out into said combustion air chamber such that combustion air circulates within said combustion air chamber around and into said perforated holding device;
- and
- further comprising a combustion air flow diverting member disposed so as to direct combustion air from said second outlet downwards into said combustion air chamber.
Dependencies are inferred from the claim text.