A hot water supply device includes: a combustion part including a first burner part for which a flame sensor is disposed and a second burner part having a different number of burners from the first burner part such that one or both of the burner parts perform combustion, the flame sensor being configured to detect combustion state information of a flame generated by burners; a combustion control part configured to monitor a combustion mode of the combustion part set in accordance with a hot water supply request and change a second combustion mode in which the first burner part does not perform combustion, to a first combustion mode in which at least the first burner part performs combustion, when the second combustion mode is continuing; and a combustion adjustment control part configured to execute a combustion adjustment process of the combustion part.

A system for electronically controlling a vent damper for a gas oven.

A motor controller for a draft inducer motor that operates an inducer blower in a furnace is provided. The motor controller includes a communication interface operable to receive a signal from a system controller. The signal represents a command to operate the draft inducer motor. The motor controller includes a processor operable to operate the draft inducer motor in accordance with a predefined motor speed profile during at least one of an ignition stage and a combustion stage of the furnace.

A gas burner assembly and a method of operating the same are provided. The gas burner assembly includes an air pump that supplies a flow of air into a boost fuel chamber for mixing with a flow of boost fuel before being combusted and directed through a plurality of boost flame ports. A temperature sensor is positioned proximate the air pump and a controller regulates the power supplied to the air pump to compensate for air pump operating characteristics based on the measured temperature. A pressure sensor may also detect a low pressure condition downstream of the air pump and shut down the fuel and air supply system accordingly.

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.

An electronic control device includes: a flow rate calculation unit that calculates a flow rate of intake air based on an output signal of a flow rate measurement device assembled to an intake pipe; a flow rate correction value calculation unit that calculates an average value, a maximum value, and a minimum value of the flow rate of the intake air, calculated by the flow rate calculation unit, during a predetermined period, and an amplitude of a signal with one or more frequencies equal to or higher than a fundamental frequency of the output signal of the flow rate measurement device and included in the output signal of the flow rate measurement device, and calculates a correction value for the flow rate of the intake air based on calculation results; and a flow rate correction unit that corrects the flow rate of the intake air based on the correction value.

A motor controller for a burner system includes an inverter that supplies current to a motor that rotates a draft inducer fan. A processor is coupled to the inverter and receives a signal from a system controller, and in response instructs the inverter to supply a first current, during a first period, to the motor to rotate the fan to produce a first mass flow through the burner system, the first mass flow having a first mass flow rate greater than a threshold to actuate a vacuum switch. The processor then instructs the inverter to supply a second current, during a second period starting at an expiration of the first period, to the motor to rotate the fan to produce a second mass flow through the burner system, the second mass flow having a target mass flow rate for normal operation of the burner.

A hot water supply device includes: a combustion part including a first burner part for which a flame sensor is disposed and a second burner part having a different number of burners from the first burner part such that one or both of the burner parts perform combustion, the flame sensor being configured to detect combustion state information of a flame generated by burners; a combustion control part configured to monitor a combustion mode of the combustion part set in accordance with a hot water supply request and change a second combustion mode in which the first burner part does not perform combustion, to a first combustion mode in which at least the first burner part performs combustion, when the second combustion mode is continuing; and a combustion adjustment control part configured to execute a combustion adjustment process of the combustion part.

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.

Provided is an RPM control method for an inducer for a gas furnace that induces a flow of combustion gas produced in a burner from a heat exchanger to an exhaust pipe. The RPM control method for an inducer for a gas furnace includes: (a) initiating a heating operation for the gas furnace; (b) determining whether the operation time during which the heating operation is performed is equal to or longer than a first time period; (c) if it is determined that the operation time is equal to or longer than the first time period, detecting whether a pressure switch is turned OFF; and (d) if the pressure switch is detected as turned OFF, increasing the RPM of the inducer by a first value.