Protected combustion device

Abstract

A protected combustion device includes a main body, which is double layered, including an inner-layer wall and an outer-layer wall disposed outside of and spaced from the inner-layer wall. The inner-layer wall and the outer-layer wall include a hollow disposed therebetween. The inner-layer wall forms a fuel receptacle with an opening. The outer-layer wall has an open end and the open end defines a hole. The hole is in communication with the hollow. The open end of the outer-layer wall forms a bottom side. A protection device is coupled to the main body. The protection device includes a through hole extending therethrough and communicating with the hollow. The protection device includes a slot extending along a periphery of the through hole and the bottom side is disposed in the slot.

What is claimed is: 
     
         1 . A protected combustion device having a double-layer structure comprising:
 a main body, which is double layered, including an inner-layer wall and an outer-layer wall disposed outside of and spaced from the inner-layer wall such that the inner-layer wall and the outer-layer wall include a hollow disposed therebetween, wherein the inner-layer wall forms a fuel receptacle with an opening, wherein the outer-layer wall has an open end and the open end defines a hole, wherein the hole is in communication with the hollow, and wherein the open end of the outer-layer wall forms a bottom side; and   a protection device coupled to the main body, wherein the protection device includes a through hole extending therethrough and communicating with the hollow, wherein the protection device includes a slot extending along a periphery of the through hole and the bottom side is disposed in the slot.   
     
     
         2 . The protected combustion device as claimed in  claim 1 , wherein the protection device has an outer peripheral portion and an inner peripheral portion and includes the slot disposed between the outer peripheral portion and the inner peripheral portion, wherein the outer peripheral portion includes a side delimiting a first lateral side of the slot, wherein the inner peripheral portion includes a side delimiting a second lateral side of the slot, and wherein the side of the outer peripheral portion extends in a height direction of the protection device higher than the side of the inner peripheral portion, with the side of the outer peripheral portion extending to an extent that is at a first height with respect to a bottom side of the protection device, and with the side of the inner peripheral portion extending to an extent that is at a second height, which is shorter than the first height, with respect to the bottom side of the protection device. 
     
     
         3 . The protected combustion device as claimed in  claim 2 , wherein the first and the second heights are higher than a bottom side of the slot. 
     
     
         4 . The protected combustion device as claimed in  claim 1 , wherein the protection device is releasably coupled to the main body. 
     
     
         5 . The protected combustion device as claimed in  claim 3 , wherein the main body has a receiving portion formed by the inner-layer wall and the fuel receptacle is delimited by the receiving portion, wherein the main body has an interconnecting portion interconnecting the inner-layer wall and the outer-layer wall, wherein the interconnecting portion extends from an outer periphery of the inner-layer wall to the inner periphery of the outer-layer wall, and wherein the interconnecting portion is hollow. 
     
     
         6 . The protected combustion device as claimed in  claim 5  further comprising a wick and a retaining device, wherein the wick is inserted through the interconnecting portion and has an end disposed in the fuel receptacle and another end disposed outside of the main body, wherein the retaining device includes an inner periphery in frictional contact with the wick to securely hold the wick, and wherein the retaining device is disposed in the interconnecting portion. 
     
     
         7 . The protected combustion device as claimed in  claim 6 , wherein the retaining device is in a form of a sleeve, wherein the retaining device includes at least one gasket mounted thereon, wherein the retaining device has an outer periphery defining at least one groove and the at least one gasket is mounted in the at least one groove, and wherein the at least one gasket abuts an inner periphery of the interconnecting portion. 
     
     
         8 . The protected combustion device as claimed in  claim 7 , wherein the inner-layer wall and the outer-layer wall are made from a transparent material. 
     
     
         9 . The protected combustion device as claimed in  claim 8 , wherein the wick is metallic. 
     
     
         10 . The protected combustion device as claimed in  claim 1 , wherein ii the bottom side and the slot are in the same shape. 
     
     
         11 . The protected combustion device as claimed in  claim 1 , wherein the outer-layer wall is in a form of a cylinder. 
     
     
         12 . The protected combustion device as claimed in  claim 3 , wherein the protection device is releasably coupled to the main body. 
     
     
         13 . The protected combustion device as claimed in  claim 12 , wherein the bottom side and the slot are in the same shape. 
     
     
         14 . The protected combustion device as claimed in  claim 13 , wherein the main body has a receiving portion formed by the inner-layer wall and the fuel receptacle is delimited by the receiving portion, wherein the main body has an interconnecting portion interconnecting the inner-layer wall and the outer-layer wall, wherein the interconnecting portion extends from an outer periphery of the inner-layer wall to the inner periphery of the outer-layer wall, and wherein the interconnecting portion is hollow. 
     
     
         15 . The protected combustion device as claimed in  claim 14  further comprising a wick and a retaining device, wherein the wick is inserted through the interconnecting portion and has an end disposed in the fuel receptacle and another end disposed outside of the main body, wherein the retaining device includes an inner periphery in frictional contact with the wick to securely hold the wick, and wherein the retaining device is disposed in the interconnecting portion. 
     
     
         16 . The protected combustion device as claimed in  claim 15 , wherein the protection device is releasably coupled to the main body. 
     
     
         17 . The protected combustion device as claimed in  claim 9 , wherein the protection device is releasably coupled to the main body.