It raises the utilization efficiency of the heat quantity which can in the heat-sterilized device by the burnup of the liquefied gas of disconnection tool for the agriculture and horticulture crop, by the liquefied gas of the gas cartridge tries to try to be able to obtain the secure heat-sterilized effect, at the same time the structure of the device simplifies. In metal narrow tube the liquefied gas cartridge the mixed gas from 4 which is installed in grip section 2.12 and 14 as the gas channel which is provided in the channel which was formed in edge section 3 and 13 it leads 8 and 18, electrical heater belt 9, 19 and burnup reaction catalytic converter installs 10 and 20 in this gas channel, 8 and 18 burnup reaction catalytic converter heating 10 and 20 to the reaction start temperature of catalytic converter burnup by heating the mixed gas with electrical heater belt 9 and 19, the heat-sterilized it does edge section 3 and 13. Because the edge section is heated directly in the catalytic converter burnup reaction section, the heat transfer effect improves. Heating the mixed gas with the electrical heater belt, because it heats the catalytic converter which is placed in the channel to burnup start temperature preliminary the burnup reaction of the catalytic converter occurs securely, it is possible to maintain the edge section in regular overheating sterilization state.農園芸作物用切断具の液化ガスの燃焼による加熱殺菌装置において、ガスカートリッジの液化ガスによって得られる熱量の利用効率を高め、確実な加熱殺菌効果が得られるようにするようにし、かつ装置の構造を簡略化する。把持部2.12に組込んだ液化ガスカートリッジ4、14からの混合ガスを刃先部3、13に形成した溝に設けたガス流路としての金属細管8、18に導き、このガス流路8、18に電熱ヒータ線9、19および燃焼反応触媒10、20を組込み、電熱ヒータ線9、19で混合ガスを加熱することにより燃焼反応触媒10、20を触媒燃焼の反応開始温度に加熱して刃先部3、13を加熱殺菌する。刃先部を直接触媒燃焼反応部で加熱するので熱伝達効果が向上する。電熱ヒータ線により混合ガスを加熱して、流路中に置かれた触媒を燃焼開始温度に予備加熱するので触媒の燃焼反応が確実に生起し、刃先部を常時過熱殺菌状態に維持することができる。
