Safety controller of gas stove

Abstract

A safety controller includes a housing including a base and a cover. The base has a main member with a chamber therein, an input channel, an output channel, a gas channel, a check port between the gas channel and the chamber, a lid member with an open end communicated with the chamber. A support member is provided in the chamber. A film resides between the lid member and the cover to separate a space into an inner pressure room and an outer pressure room. A control device is provided in the chamber with an end connected to the film to control a flow rate of gas flowing to the gas channel from the chamber. A pressure up electromagnetic valve and an exhaust electromagnetic valve are provided beside the cover to be activated to change pressures in the inner and outer pressure room respectively to make the film deforming.

1 . A safety controller of a gas stove, which the gas stove is conned to a gas source through a hose, and a gas adjusting device is mounted on an end of the hose connected to the gas source, and the safety controller is provided on the hose between the gas adjusting device and the gas stove to control the gas stove, comprising:
 a housing including a base and a cover, wherein the base has a main member with a chamber therein, an input channel connected to the hose and communicated with the chamber, an output channel connected to the gas stove, a gas channel communicating the output channel and the chamber, a check port between the gas channel and the chamber, a lid member with an open end communicated with the chamber, on which the cover is covered to close the open end;   a support member provided in the chamber and associated with the lid member having a hole;   a film between the lid member and the cover to separate a space between the lid member and the cover into an inner pressure room, which is communicated with the chamber, and an outer pressure room;   a control device provided in the chamber with an end connected to the film through the hole of the support member and the other end associated with the check port to control a flow rate of gas flowing to the gas channel from the chamber;   a pressure up electromagnetic valve and an exhaust electromagnetic valve provided beside the cover to be activated to change pressures in the inner pressure room and in the outer pressure room respectively to make the film deforming for moving the control device.   
   
   
       2 . The safety controller as defined in  claim 1 , wherein the control device includes a driving shaft with an end connected to the film in the inner pressure room through the hole of the support block, a closing member provided on the other end of the driving shaft and associated with the check port, and a pressure stabilizing member provided on a side of the closing member and extending into the gas channel. 
   
   
       3 . The safety controller as defined in  claim 2 , wherein the control device further includes an elastic member between the support block and the closing member. 
   
   
       4 . The safety controller as defined in  claim 2 , wherein the pressure stabilizing member includes an adjusting portion associated with the check port. 
   
   
       5 . The safety controller as defined in  claim 1 , wherein the pressure up electromagnetic valve is a normal open electromagnetic valve and an exhaust electromagnetic valve is a normal close electromagnetic valve. 
   
   
       6 . The safety controller as defined in  claim 5 , wherein the exhaust electromagnetic valve has an outlet connected to an ignition device of mother fire of the gas stove. 
   
   
       7 . The safety controller as defined in  claim 1 , wherein the gas stove may be a baking stove or a heating stove that uses gas as fuel.