Gas preheating torch

A gas preheating torch comprising:

• a hollow adaptor module configured to be connected to a portable gas container;
• a gas valve body module having a gas flow path therein to discharge gas introduced from the portable gas container;
• a gas temperature change module comprising a gas inlet pipe having one end connected to a gas inlet hole of the gas valve body module, a bent gas pipe having one end integrally connected to the gas inlet pipe, and a gas outlet pipe having one end integrally connected to the other end of the bent gas pipe and the other end connected to a gas outlet hole of the gas valve body module;
• a heat exchange promotion module having one side attached to the gas inlet pipe and the other side attached to the gas outlet pipe to bring the gas inlet pipe and the gas outlet pipe in contact with each other and enable heat exchange between gas flowing through the inside of the gas inlet pipe and gas flowing through the inside of the gas outlet pipe;
• and
• a burner module having one end connected to the other end of the gas valve body module and located behind the bent gas pipe of the gas temperature change module to spray gas discharged from the gas valve body module, project a flame, and heat the bent gas pipe.