Nozzle for Spraying Substances and Method for the Open-Loop or Closed-Loop Control of the Nozzle
AssigneeGlatt GmbH
InventorsReinhard Nowak, Jochen Thies
Life of this patent
Estimating the term…
Abstract
A nozzle for spraying substances, more particularly dispersions, emulsions or suspensions, and to a method for the open-loop or closed-loop control of the volumetric flow rate of a substance to be sprayed and/or of a gas of a nozzle suitable for spraying substances, more particularly dispersions, emulsions or suspensions. The nozzle includes an inner tube discharge opening and a constriction in an inner tube channel carrying the substance to be sprayed at a distance from the inner tube discharge opening.
Claims23
A nozzle for spraying substances, the nozzle comprising
- a nozzle body having a nozzle tip and a longitudinal axis, wherein the nozzle body has an inner tube connected to a feed for a substance to be sprayed and equipped with an inner tube channel comprising an inner tube channel inner wall and an inner tube channel cross-section having an inner tube channel cross-sectional area, and with an inner tube discharge opening having an inner tube discharge opening area, and an outer tube enclosing the inner tube at a radial distance and connected to a feed for a gas, comprising an outer tube discharge opening having an outer tube discharge opening area, and wherein the inner tube discharge opening and the outer tube discharge opening are located in a region of the nozzle tip,
- wherein a constriction is provided in the inner tube channel carrying the substance to be sprayed at a distance from the inner tube discharge opening,
- wherein the inner tube channel cross-sectional area is smaller in the constriction than the inner tube channel cross-sectional area of an inner tube channel discharge section between the constriction and the inner tube discharge opening.
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A method for the open-loop or closed-loop control of a volumetric flow rate of a substance to be sprayed and/or of a gas of a nozzle suitable for spraying substances, wherein the nozzle comprises a nozzle body having a nozzle tip and a longitudinal axis wherein the nozzle body has an inner tube connected to a feed for the substance to be sprayed and equipped with an inner tube channel comprising an inner tube channel inner wall and an inner tube channel cross-section having an inner tube channel cross-sectional area, and with an inner tube discharge opening having an inner tube discharge opening area, and an outer tube enclosing the inner tube at a radial distance and connected to a feed for a gas, comprising an outer tube discharge opening having an outer tube discharge opening area, and wherein the inner tube discharge opening and the outer tube discharge opening wherein a constriction is provided in the inner tube channel carrying the substance to be sprayed at a distance from the inner tube discharge opening, wherein the inner tube channel cross-sectional area is smaller in the constriction than the inner tube channel cross-sectional area of an inner tube channel discharge section between the constriction and the inner tube discharge opening and wherein the constriction is formed from a flexible material, wherein the constriction has a closed position for closing the inner tube channel and at least one open position, wherein the substance to be sprayed can flow at least through the inner tube channel in the at least one open position, wherein a fluid chamber having a chamber volume and suitable for receiving and discharging fluid is provided in and/or at the flexible material, so that the inner tube channel cross-sectional area can be adjusted in the constriction, whereby the nozzle is transferred from the one closed position of the inner tube channel into the at least one open position of the inner tube channel and vice versa.
Dependencies are inferred from the claim text.