Patent ID: 8668491
Filing Date: 2014-03-11
Classification: F23N

Abstract:
1. A regulating device for providing a desired gas/air mixture to a gas burner, wherein a gas line provides a source of gas to a gas valve, and the gas valve provides a regulated gas flow based at least in part on a signal provided by a sensor, wherein the signal provided by the sensor is related to a gas pressure of the regulated gas flow against a reference pressure at a reference pressure input of the sensor, the regulating device comprising: a mixing device for mixing the regulated gas flow with a combustion air flow to produce a gas/air mixture to the gas burner, the mixing device includes a venturi nozzle, wherein the regulated gas flow is provided to a mixing region of the venturi nozzle in which the regulated gas flow and the combustion air flow are mixed to form the desired gas/air mixture; a device having an inner chamber and an outer chamber separated by a filter, wherein the inner chamber is fluidly coupled to the reference pressure input of the sensor, and the outer chamber is fluidly coupled to a region of the mixing device that is downstream of the mixing region of the venturi nozzle via a connecting line; and a flow guiding element associated with the outer chamber of the device, wherein the flow guiding element helps guide and/or capture an ambient air flow from an ambient atmosphere to the outer chamber, and further helps guide and/or capture a flow from the reference pressure input of the sensor, which has crossed over from the inner chamber and into the outer chamber through the filter.