The problem of atomizer design is based on the classification principles. Atomizer designs are highly diverse; for example, Spraying Systems Co. produces 16,000 standard atomizers. Jet atomizers with continuous operation are the simplest of all atomizers in design. Jet disintegration into drops occurs at a certain distance from the atomizer, depending on the type of orifice and the discharge conditions. Simple atomizers are used mostly because of the compact and strong liquid jet they produce. In blast atomizers the liquid jets collide with a solid object. Blast atomizers can be divided into two groups: deflection atomizers and cascade atomizers. Fan atomizers are based on the same principle as atomizers with impinging jets. Fan atomizers find vast application in agriculture treatment, fire protection, in cooling of machine elements, washing and cleaning, and drying. Chambers with indirect injection are characterized by the fact that fuel is injected into an auxiliary chamber, in most cases the initial chamber or a swirl chamber.