Patent ID: 8376737

Claim:
A hot air blower comprising: a fuel tank for storing fuel; an air compression pump for sucking air and compressing the air; a pressure regulation valve installed at the air compression pump to reduce the pressure of the compressed air; a burner assembly for receiving the fuel from the fuel tank and the air from the air compression pump; and a combustion chamber for receiving the fuel from the burner assembly and combusting the fuel, wherein the pressure regulation valve includes a high-pressure regulation valve and a low-pressure regulation valve, and a valve opening/closing means at the low pressure regulation valve; wherein the valve opening/closing means includes a valve body coupled to the low-pressure regulation valve and a rotation drive part rotatably coupled to the valve body, the valve body including a coupling pipe coupled to the low-pressure regulation valve and having a compressed air discharge groove formed therearound, a coupling part formed at one end of the coupling pipe and having an inclined surface formed on a periphery of the coupling part and a coupling hole formed in its center, the rotation drive part including a coupling body rotatably coupled to the coupling part of the valve body, a guide projection extending in a direction parallel to a longitudinal axis of the coupling pipe from the coupling body and moving on the inclined surface of the valve body, a fixing rod extending in the same direction as the guide projection and inserted into the coupling hole, a packing member formed at an end of the fixing rod to open/close the low-pressure regulation valve, and a resilient member interposed between the packing member and the valve body.