Injection nozzle for a spray device and spray device
AssigneeLechler GmbH
InventorsBoris Schmidt, Gabriele Beddies, Robert Heinkel, Hannes Knupfer
Life of this patent
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Abstract
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.
Claims21
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 fluid suction medium and the fluid propellant, the injection nozzle comprising a nozzle housing having an injection chamber which is 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, wherein the fluid suction opening opens in an annular channel which has a flow connection to the injection chamber, and wherein at least one pin diaphragm is provided in a suction channel upstream of the fluid suction opening.
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 fluid suction medium and the fluid propellant, the injection nozzle comprising a nozzle housing having an injection chamber which is 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, wherein the fluid suction opening opens in an annular channel which has a flow connection to the injection chamber, wherein a cylindrical portion of the injection chamber is arranged upstream of a first conical portion, wherein the first conical portion adjoins the cylindrical portion, wherein a pin diaphragm is provided in a suction channel upstream of the fluid suction opening, and wherein a ratio between a diameter of the cylindrical portion of the injection chamber and a diameter of a through-opening of the pin diaphragm is in the range from 1.5 to 15.
An injection nozzle for a spray device for drawing in a fluid suction medium by a fluid propellant and for spraying an admixture of the fluid suction medium and the fluid propellant, the injection nozzle comprising:
- a nozzle housing having an injection chamber within the nozzle housing;
- a jet nozzle that opens into the injection chamber for producing a propellant jet introduced into the injection chamber;
- and
- a fluid suction opening configured to receive the fluid suction medium;
- wherein the fluid suction opening opens into an annular channel fluidly connected to the injection chamber;
- and
- wherein at least one pin diaphragm is provided in a suction channel upstream of the fluid suction opening.
Dependencies are inferred from the claim text.