Exemplary embodiments of a system and method for bimodal air control in a kettle-style grill are configured to be detachably mounted to the exterior of a kettle-styled grill such as, but not limited to, a Weber® charcoal grill. When mounted to the kettle-styled grill, a plenum-like component directs air flows to the interior of the grill's kettle via the kettle's lower body damper holes. A manually adjustable intake damper in the plenum component allows, restricts, or prevents a drawn ambient air flow into the plenum component. Separately, a forced air flow generated by a fan may also be provided into the plenum component. Adjustment of the intake damper may also adjust damper blades inside the grill's kettle. Ash that falls out of the kettle's damper holes falls through the plenum component and is captured in an ash receptacle that is removably mounted to the plenum component.

A burner assembly for an oven appliance, the oven appliance defining a vertical direction, a lateral direction, and a transverse direction and including a cooking chamber, the burner assembly including a gas burner provided in the cooking chamber, the gas burner defining a clean air port, and a shutter housing attached to a first end of the gas burner, the shutter housing defining an air inlet in fluid communication with the clean air port, and wherein the air inlet is positioned below the clean air port along the vertical direction.

A burner assembly for an oven appliance, the oven appliance defining a vertical direction, a lateral direction, and a transverse direction and including a cooking chamber, the burner assembly including a gas burner provided in the cooking chamber, the gas burner defining a clean air port, and a shutter housing attached to a first end of the gas burner, the shutter housing defining an air inlet in fluid communication with the clean air port, and wherein the air inlet is positioned below the clean air port along the vertical direction.

The present invention provides a hot water storage-type boiler having both a heat amount proportional control function and a backflow prevention function to prevent a backflow of exhaust gas with a simple structure. In the present invention, since a check valve is integrally coupled to a burner duct, there is an effect of convenient assembly. In addition, since the check valve is built in the burner duct, the check valve does not protrude to the outside, thereby having an effect that a separate space is not required.

The present invention provides a hot water storage-type boiler having both a heat amount proportional control function and a backflow prevention function to prevent a backflow of exhaust gas with a simple structure. In the present invention, since a check valve is integrally coupled to a burner duct, there is an effect of convenient assembly. In addition, since the check valve is built in the burner duct, the check valve does not protrude to the outside, thereby having an effect that a separate space is not required.

The disclosed technology includes a device for extending the turndown ratio of a gas-fired burner system. The device can comprise a variable area device configured reduce the amount of fuel and air passed to the burner during low output conditions by adjusting the cross-sectional area of the passage between the blower and the burner. The variable area device can be controlled by an actuator that adjusts the position of the variable area device. The actuator can be manually controlled, mechanically controlled, or electronically controlled.

The disclosed technology includes a device for extending the turndown ratio of a gas-fired burner system. The device can comprise a variable area device configured reduce the amount of fuel and air passed to the burner during low output conditions by adjusting the cross-sectional area of the passage between the blower and the burner. The variable area device can be controlled by an actuator that adjusts the position of the variable area device. The actuator can be manually controlled, mechanically controlled, or electronically controlled.

Disclosed herein is a combustion apparatus which comprises a chamber having a apertured rotatable tubular auger mounted between end walls of the chamber to convey particulate material from the region of the chamber proximate the feed inlet to the combustion gas outlet and a blower connected to the opposite end of the tubular auger and configured to blow gas into the bore of the auger and out through the apertures into the chamber.

Disclosed herein is a combustion apparatus which comprises a chamber having a apertured rotatable tubular auger mounted between end walls of the chamber to convey particulate material from the region of the chamber proximate the feed inlet to the combustion gas outlet and a blower connected to the opposite end of the tubular auger and configured to blow gas into the bore of the auger and out through the apertures into the chamber.

A reactor system for the production and/or treatment of particles in an oscillating process gas stream. The reactor system includes a reactor unit that has an upstream feed unit and a downstream discharge unit and a reactor that includes a multiple burner system that has a combustion chamber, an exhaust gas pipe that follows downstream from the combustion chamber, and a plurality of burners. A part of the burners of the multiple burner systems are suitable for production of the oscillating process gas stream. The burners of the multiple burner system are arranged in the combustion chamber of the reactor unit.