| 摘要 |
[Problem] To enable to heat and atomize liquefied gas even at low temperatures by increasing a flow path (33) length and a transit time to be heated by a heater (12), and by spending time and efficiently heat the liquefied gas. [Solution] A device housing (14) having a hollow portion (18) including a gas intake pipe (16) projectingly provided to an outer periphery of an instrument body (4A) such that liquefied gas is taken in from an outer end, having the heater (12) built therein and attached to the instrument body (4A). In the hollow portion (18) of the device housing (14), a heating wall formed by a bulge extending from the outer end side to the inner end side in the axial direction of the intake pipe (16) and the heater (12) for heating are internally provided. Between the heating wall and the gas intake pipe (16), and between the heating wall and the inner wall of the housing (14), inner and outer gas flow paths (22, 24) are formed. To make these gas flow paths (22, 24) into return passages, the gas flow paths (22, 24) are communicated at the inner end side of the device housing (14), a liquefied gas introduction side opening (28) is provided at an outer end side of the outer gas flow path (24), and the outer end side of the inner gas (22) flow path is communicated with a gas intake opening (16a) of the tip of the gas intake pipe (16). |
