# US 10,245,602 B2 · Atomizer nozzle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,245,602 B2 - Document ID: US10245602B2 - Status: Granted - Kind: B2 - Application number: 15/517,673 - Filed: 2014-10-09 - Published: 2017-10-26 - Granted: 2019-04-02 - Earliest claimed: 2014-10-09 - Assignees: Spraying Systems Manufacturing Europe GmbH - Applicants: Spraying Systems Manufacturing Europe GmbH - Inventors: Jochen Paal - Web page: https://patentgrep.com/patent/US10245602B2 ## CPC - B05B 7/0491: {the liquid and the gas being mixed at least twice along the flow path of the liquid} - B05B 7/0466: {with means for deflecting the central liquid flow towards the peripheral gas flow} - B05B 7/0483: {with gas and liquid jets intersecting in the mixing chamber} - B05B 7/0892: {the outlet orifices for jets constituted by a liquid or a mixture containing a liquid being disposed on a circle} - B05B 7/10: producing a swirling discharge - B05B: SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES (spray-mixers with nozzles B01F25/72; processes for applying liquids or other fluent materials to surfaces by spraying B05D) ## Abstract The invention relates to an atomizer nozzle (10) with a liquid channel (19) which communicates downstream with an annular mixing chamber (26). A liquid (F) is supplied to the liquid channel (19) via a liquid connection (12). The atomizer nozzle (10) additionally has a gas connection (13) which is connected to a gas line system (28). Pressurized gas (L) is conducted to an outer injection channel (29) and an inner injection channel (34) via the gas line system. Each of the two injection channels (29, 34) opens into the annular mixing chamber (26) at a respective injection point (30, 35). The outer injection point (30) is provided on a radially outer mixing chamber wall, and the inner injection point (35) is provided on a radially inner mixing chamber wall. The inflowing liquid can thus be finely atomized using little pressurized gas (L) in the annular mixing chamber (26) and dispensed downstream of the annular mixing chamber via at least one outlet opening (40) in the form of a spray jet (S). ## Claims ### Claim 1 An atomizer nozzle (10) comprising: a nozzle body (15), liquid connection (12) for supplying a liquid (F) to a liquid channel (19) of the nozzle body (15) that communicates downstream with an annular mixing chamber (26) of the nozzle body (15) coaxial with a nozzle axis (A); said liquid channel (19) having a widening end section (19c) for directing liquid into said annular mixing chamber (26); a central liquid directing part (25) supported on the nozzle axis (A) in the end section (19c) of the liquid channel (19), said central liquid directing part (25) having an outer flow directing surface that extends in a downstream direction a progressively greater distance from the nozzle axis (A) for forming a widening flow layer (FH) of liquid (F) that is directed obliquely away from the nozzle axis (A) and into the annular mixing chamber (26) adjoining the end section (19c) of the liquid channel (19); at least one gas connection (13) for supplying pressurized gas (L) to a gas line system (28) that comprises at least one outer injection channel (29) and at least one inner injection channel (34); said outer injection channel (29) opening at an outer injection point (30) at a radially outside location relative to the nozzle axis (A) into the annular mixing chamber (26); and said inner injection channel (34) opening into the annular mixing chamber (26) at an inner injection point (35) at a radially inside location relative to the injection point (30) of the outer injection channel (29), and a central gas channel (33) extending along the nozzle axis (A) radially inwardly of the angular mixing chamber (26), said central gas channel (33) being fluidically connected at one end to the at least one gas connection (13) and to the inner injection channel (34) at the other end such that a part of the supplied pressurized gas (L) flows through the central gas channel (33) to the inner injection channel (34) in a direction opposite the flow direction of the flow layer (FH) of liquid (F) into the annular mixing chamber (26) from the gas connection (13) to at least one communication opening flowing through passage openings (32). ### Claim 2 (depends on 1) The atomizer nozzle of claim 1 in which the outer injection point (30) and the inner injection point (35) are arranged so as to be offset relative to each other in an axial extension direction of the annular mixing chamber (26). ### Claim 3 (depends on 2) The atomizer nozzle of claim 2 in which the outer injection point (30) is arranged in the axial extension direction of the annular mixing chamber (26) upstream relative to the inner injection point (35). ### Claim 4 (depends on 1) The atomizer nozzle of claim 1 in which the inner injection channel (34) and the outer injection channel (29) are configured such that the gas volume flow flowing into the annular mixing chamber (26) via the outer injection channel (29) is greater than the gas volume flow flowing into the annular mixing chamber (26) via the inner injection channel (34). ### Claim 5 (depends on 1) The atomizer nozzle of claim 1 in which the annular mixing chamber (26) is connected downstream to at least one outlet opening (40) from which an atomized spray jet (S) is discharged. ### Claim 6 (depends on 5) The atomizer nozzle of claim 5 in which the annular mixing chamber (26) is curved along and in the direction of the nozzle axis (A) one or more times between the outer and inner injection points (30, 35) of the respective injection chambers (29, 34) and the at least one outlet opening (4). ### Claim 7 (depends on 1) The atomizer nozzle of claim 1 in which the central liquid directing part (25) generates a widening flow layer (PH) that is continuously closed in a circumferential direction (U) around the nozzle axis (A). ### Claim 8 (depends on 1) The atomizer nozzle of claim 1 including a swirl liquid generating part (20) supported on the nozzle axis A upstream of the central liquid directing part (20) for imparting a swirl to the liquid (F) flowing in the liquid channel (19). ### Claim 9 (depends on 8) The atomizer nozzle of claim 8 in which the swirl generator part (20) is arranged in a swirl-generating section (19b) of the liquid channel (19) adjoining the end section (19c) of the liquid channel (19) upstream thereof. ### Claim 10 (depends on 1) The atomizer nozzle of claim 1 in which the central liquid directing part (25) is an integral part of the nozzle body (15).