Overheating protection device for electronic cigarette and smoke cartridge

Abstract

An overheating protection device for an electronic cigarette includes a battery for powering the electronic cigarette, an atomizer for vaporizing a tobacco flavored liquid by heating, and a control circuit module for controlling the atomizer to work. The battery, the control circuit module, and the atomizer are electrically connected one by one to define a heating circuit. The overheating protection device further includes a thermal fuse connected in series in the heating circuit. When environment temperature is overheat, the thermal fuse automatically blows to cut off the heating circuit, and the battery stops powering the atomizer. The overheating protection device is safe for smoker and the electronic cigarette.

What is claimed is: 
     
         1 . An overheating protection device for an electronic cigarette, comprising:
 a battery for powering the electronic cigarette;   an atomizer for vaporizing a tobacco flavored liquid by heating;   a control circuit module for controlling the atomizer to work;   the battery, the control circuit module, and the atomizer are electrically connected one by one to define a heating circuit, wherein the overheating protection device further comprises a thermal fuse connected in series in the heating circuit; when environment temperature is overheat, the thermal fuse automatically blows to cut off the heating circuit, and the battery stops powering the atomizer.   
     
     
         2 . The overheating protection device of  claim 1 , wherein the thermal fuse is connected in series between an anode of the battery and a positive power end of the control circuit module. 
     
     
         3 . The overheating protection device of  claim 1 , wherein the thermal fuse is connected in series between a cathode of the battery and a negative power end of the control circuit module. 
     
     
         4 . The overheating protection device of  claim 1 , wherein the thermal fuse is shaped as a tube or a square shell. 
     
     
         5 . The overheating protection device of  claim 2 , wherein the thermal fuse is shaped as a tube or a square shell. 
     
     
         6 . The overheating protection device of  claim 3 , wherein the thermal fuse is shaped as a tube or a square shell. 
     
     
         7 . The overheating protection device of  claim 1 , wherein the thermal fuse can be chosen with any of the thermal fuse that the range of the blown temperature is between 50° C. to 200° C. 
     
     
         8 . An overheating protection device for a smoke cartridge, comprising:
 an atomizer interface for connecting with a controlling circuit of an electronic cigarette;   an atomizer for vaporizing a tobacco flavored liquid by heating;   a thermal fuse for preventing the atomizer from continuously heating when the atomizer is overheat, and a first end of the atomizer interface is connected to a first end of the atomizer by the thermal fuse, and a second end of the atomizer interface is connected to a second end of the atomizer.   
     
     
         9 . The overheating protection device of  claim 8 , wherein the thermal fuse is shaped as a tube or a square shell. 
     
     
         10 . The overheating protection device of  claim 9 , wherein the thermal fuse can be chosen with any of the thermal fuse that the range of the blown temperature is between 50° C. to 200° C.