US 11,719,434 B2
Gas safety device using low power to control high flow
Pao-Chi Chang, Taichung (TW); and Ping-Yang Wu, Taichung (TW)
Assigned to SEVEN UNIVERSE INDUSTRIAL CO., LTD., Taichung (TW)
Filed by SEVEN UNIVERSE INDUSTRIAL CO., LTD., Taichung (TW)
Filed on Dec. 22, 2020, as Appl. No. 17/130,032.
Claims priority of application No. 109129807 (TW), filed on Aug. 31, 2020.
Prior Publication US 2022/0065449 A1, Mar. 3, 2022
Int. Cl. F23N 1/00 (2006.01); F23N 1/02 (2006.01)
CPC F23N 1/022 (2013.01) [F23N 2225/04 (2020.01); F23N 2225/08 (2020.01); F23N 2235/20 (2020.01); F23N 2235/24 (2020.01)] 7 Claims
OG exemplary drawing
 
1. A gas safety device using low power to control high flow, which includes:
a controller, including a controller gas inlet and a controller gas outlet communicated with one end of the controller gas inlet, the controller gas inlet is connected to the gas source; a micro switch lever is movably configured on the controller gas inlet, and is connected to one end of the controller gas outlet, through a first valve portion on its one end, the controller gas inlet can be controlled to be or not to be communicated with the controller gas outlet;
a differential pressure regulating valve, configured on one side of the controller, including a gas inlet flow channel, a gas outlet flow channel, a diaphragm that can be pushed by the gas pressure, and a valve body configured on one side of the diaphragm, between the gas inlet flow channel and the gas outlet flow channel, a valve is configured, the gas outlet flow channel is connected to a gas burning appliance, the diaphragm is configured on one side of the gas outlet flow channel, the other side of the diaphragm is communicated with the controller gas outlet, one end of the valve body is configured with a second valve portion, the valve body goes through a valve gate, so that the second valve portion can shut the valve or open the valve, to control if the gas inlet flow channel can be communicated with the gas outlet flow channel; and
a driver, configured with a drive piece that is connected to the micro switch lever, through displacement of the drive piece to drive the micro switch lever, the first valve portion can control if the controller gas inlet can be communicated with the controller gas outlet,
wherein the gas safety device further includes a back pressure regulator, connected between the controller gas outlet of the controller and the diaphragm, used to regulate the back pressure of the gas on the diaphragm.