Abstract

Disclosed is a novel wood pellet furnace firebox. The firebox comprises a firebox wall and a firebox bottom plate, wherein the firebox wall is provided with a hollow interlayer air duct, the outer wall of the firebox is provided with an air outlet which communicates with the interlayer air duct, and the bottom and top parts of the inner wall of the firebox are respectively provided with a bottom air intake hole and a top air intake hole which communicate with the interlayer air duct. By means of the arrangement of the firebox wall as a hollow interlayer structure, the present application allows a portion of air entering the interlayer air duct to enter from the bottom air intake hole and mix with ignited wood pellets for primary combustion, and another portion of air to be preheated by means of the interlayer air duct, then blow out from the top air intake hole and mix with red-hot flue gas and dust from the primary combustion for secondary combustion. The secondary combustion can increase the roasting temperature in a furnace chamber to above 800 degrees Fahrenheit, and on the other hand, can also burn up flue gas and dust as much as possible to greatly improve cleanliness in a furnace hearth, and increase the combustion efficiency and fuel utilization rate, which highlights the advantages of wood pellet furnaces with regards to saving energy and protecting the environment.

IPC Classes  ?

• F24B 1/195 - FireboxesFramesHoodsHeat reflectors
• F24B 1/191 - Component partsAccessories

Abstract

The present invention relates to a pellet oven with negative pressure combustion, comprising: a grill body, and a combustion assembly, an iron plate, a grilling grate, an air duct assembly, and a fan installed within said grill body. Said grilling grate is installed above-said iron plate for a distance. Said combustion assembly is mounted in the lower left of said iron plate. Said air duct assembly is located at the right of said iron plate, and extends below said iron plate to a position under said grilling grate. Said air duct assembly has air inlet ports and air outlets at its lower and upper ends respectively. Said fan is installed inside said air duct assembly. Through these, the present invention realizes simultaneous plate-cooking and grill roasting, making the whole cooking process easier and more efficient.

IPC Classes  ?

• A47J 37/07 - Roasting devices for outdoor useBarbecues
• A47J 37/01 - Vessels uniquely adapted for baking

Abstract

Disclosed is a novel wood pellet furnace firebox. The firebox comprises a firebox wall and a firebox bottom plate, wherein the firebox wall is provided with a hollow interlayer air duct, the outer wall of the firebox is provided with an air outlet which communicates with the interlayer air duct, and the bottom and top parts of the inner wall of the firebox are respectively provided with a bottom air intake hole and a top air intake hole which communicate with the interlayer air duct. By means of the arrangement of the firebox wall as a hollow interlayer structure, the present application allows a portion of air entering the interlayer air duct to enter from the bottom air intake hole and mix with ignited wood pellets for primary combustion, and another portion of air to be preheated by means of the interlayer air duct, then blow out from the top air intake hole and mix with red-hot flue gas and dust from the primary combustion for secondary combustion. The secondary combustion can increase the roasting temperature in a furnace chamber to above 800 degrees Fahrenheit, and on the other hand, can also burn up flue gas and dust as much as possible to greatly improve cleanliness in a furnace hearth, and increase the combustion efficiency and fuel utilization rate, which highlights the advantages of wood pellet furnaces with regards to saving energy and protecting the environment.

IPC Classes  ?

• F24B 1/197 - Hearths
• F24B 1/19 - Supplying combustion-air