| 摘要 |
A fuel tube (31) includes a tube main body (310), a first tubular section (311), and a second tubular section (312). The tube main body (310) defines a heating chamber (316). The first tubular section (311) extends through one side of the tube main body (310) and includes a first fuel inlet opening (317) located outside the tube main body (310) and a first fuel outlet opening (318) located within the heating chamber (316). The second tubular section (312) extends through another side of the tube main body (310) that is opposite to the first tubular section (311) and includes a second fuel inlet opening (319) located within the heating chamber (316) and a second fuel outlet opening (320) located outside the tube main body (310). The tube main body (310), the first tubular section (311), and the second tubular section (312) collectively form a single Z-shaped path. As such, the flow path of fuel is effectively shortened and stable flow rate of fuel can be maintained.
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