An injection nozzle for a spray device for drawing in a fluid suction medium by a fluid propellant which is under excess pressure and for spraying an admixture of the suction medium and the propellant. The injection nozzle has a nozzle housing, an injection chamber arranged in the nozzle housing, a jet nozzle which opens in the injection chamber for producing a propellant jet which is introduced into the injection chamber, and a fluid suction opening for the fluid suction medium. The fluid suction opening opens in an annular channel which has a flow connection to the injection chamber.

An injection nozzle for a spray device for drawing in a fluid suction medium by a fluid propellant which is under excess pressure and for spraying an admixture of the suction medium and the propellant. The injection nozzle has a nozzle housing, an injection chamber arranged in the nozzle housing, a jet nozzle which opens in the injection chamber for producing a propellant jet which is introduced into the injection chamber, and a fluid suction opening for the fluid suction medium. The fluid suction opening opens in an annular channel which has a flow connection to the injection chamber.

A fluid delivery system utilizes Bernoulli pressure differentials and kinetic forces is provided. The system includes a pressurized channel in fluid communication with a flexible pressurized line for translating pressurized fluids to a mixing chamber. The mixing chamber is also in fluid communication with a source channel receiving fluids from a flexible source line. The mixing chamber is configured for entraining the source fluids with the pressurized fluids 26 using Bernoulli principles. Kinetic valves may be used in conjunction with, or in lieu of, the Bernoulli siphoning.

A system may include a spray device having a body with a first liquid passage configured to flow a first liquid and a second liquid passage configured to flow a second liquid. The spray device also may include a spray head configured to output a spray of the first liquid and the second liquid. In addition, the spray device may include a multi-component container coupled to the body, wherein the multi-component container comprises a first container portion having a first outlet configured to supply the first liquid to the first liquid passage and a second container portion having a second outlet configured to supply the second liquid to the second liquid passage, and the first and second outlets are positioned in close proximity to one another.

A spray device, such as one used with a pressure washer, includes a housing, a chemical container coupled to the housing, and a chemical conduit coupled to the container. The chemical conduit has an inlet and an outlet forming a chemical flow path therebetween. The spray device further includes a chemical flow controller allowing a user to adjust a chemical flow rate through the chemical conduit. Further, the spray device includes a water conduit forming a water flow path through the housing, the water conduit terminating at a spray orifice. The chemical flow path and the water flow path merge at a point proximate the orifice.

An aerosol generator includes a first body having a first end including an exit opening, and an oppositely positioned second end. An open channel second body is substantially positioned inside the first body and extends from the first end to the second end of the first body. An exit opening of the second body is positioned adjacent to the exit opening of the first end of the first body. An insert, which holds material to be aerosolized, is at least partially positioned inside the second body. An inlet opening receives compressed air into the first body. The compressed air flows towards the exit opening of the first end of the first body. The air flow creates a region of low pressure at the exit opening of the second body. The region of low pressure pulls the material out from the second body and aerosolizes the material. The aerosol generator is particularly effective in generating aerosols from small amounts of solid and liquid materials with minimal losses of material.