Patent ID: 8436738
Filing Date: 2013-05-07
Classification: G01M,G08B

Abstract:
1. A gas leak detection system for an appliance, the appliance having a gas inlet and at least one gas burner, the system comprising: a control valve placed upstream of the gas burner and at a position that minimizes the amount of gas in the appliance between said control valve and the gas burner; a gas pressure sensor placed upstream of said control valve; a shut-off valve placed upstream of said gas pressure sensor, downstream of the gas inlet to the appliance, and at a position that minimizes the amount of gas in the appliance between said shut-off valve and the gas inlet; a signal element for providing a warning regarding a gas leak; and a control module in communication with said control valve, said gas pressure sensor, said shut-off valve, and said signal element, wherein said control module is configured for determining, at a preselected time, whether said control valve is in a closed position and, if so, then closing said shut-off valve and monitoring the gas pressure in the appliance as measured by said gas pressure sensor to determine if an unacceptable decrease in gas pressure has occurred.