A hot air gun is a power tool that uses high-temperature airflow to heat objects and is widely used in electronics repair, industrial processing, and household DIY projects.
Basic Structure of a Hot Air Gun
Housing and Handle: Made of high-temperature resistant engineering plastic (withstand temperatures up to 300°C), providing comfortable grip and safety protection.
Heating Element: Usually a nickel-chromium alloy resistance wire or ceramic heater, wound around a quartz tube/magnetic tube, which heats up quickly when powered.
Fan System: Mostly brushless DC blowers (with a lifespan of over 30,000 hours), used to draw in air and blow it through the heating area to form hot air.
Temperature Control System: Includes thermocouples (such as K-type) or thermistors and control circuits (PID/SSR), achieving precise temperature control (accuracy up to ±1°C).
Nozzle Assembly: Interchangeable nozzles of different shapes (round, square, flat) and sizes to suit different soldering or heating scenarios.
Auxiliary Functions: Some high-end models feature digital temperature displays, multiple wind speed adjustments, sleep mode (magnetic reed sensing stand), and delayed shutdown cooling, etc.
Typical internal structure example: DC fan (24V 0.25A) + spiral heating wire + quartz insulating tube + magnetic reed tube (for stand sleep detection).