The core component of the steam generator is the heater, which heats water to a high temperature above the boiling point. In an electric steam generator, an electric heater is usually used to convert electrical energy into heat energy through resistance to heat water; in a fuel steam generator, the heat generated by the combustion of fuel is used to heat the water.

When water reaches a high enough temperature, it begins to boil and convert into water vapor. This process involves water molecules becoming active when heated and evaporating into water vapor.

As the water heats, the steam produced gradually builds up pressure. In a steam generator, the steam pressure increases as the water temperature increases until it reaches a set pressure value.

When the steam pressure reaches the set value, the steam generator releases steam through the output port. These steams can be used in high-temperature cooking equipment for medical waste to sterilize and process medical waste.

Steam generators are often equipped with safety controls to monitor and regulate the heating process. These controls ensure that the steam generator operates within a safe range to prevent overheating or other unexpected conditions.