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WO2025190526A1 - Anneau de séparation d'air destiné à fournir de l'air d'atomisation et à mettre en forme de l'air à l'intérieur d'un pistolet de pulvérisation de peinture - Google Patents

Anneau de séparation d'air destiné à fournir de l'air d'atomisation et à mettre en forme de l'air à l'intérieur d'un pistolet de pulvérisation de peinture

Info

Publication number
WO2025190526A1
WO2025190526A1 PCT/EP2024/086842 EP2024086842W WO2025190526A1 WO 2025190526 A1 WO2025190526 A1 WO 2025190526A1 EP 2024086842 W EP2024086842 W EP 2024086842W WO 2025190526 A1 WO2025190526 A1 WO 2025190526A1
Authority
WO
WIPO (PCT)
Prior art keywords
air
ring element
ring
paint
spray gun
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/EP2024/086842
Other languages
German (de)
English (en)
Inventor
Alexander Tschan
Jan Hahn
Dietrich Wolter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SATA GmbH and Co KG
Original Assignee
SATA GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SATA GmbH and Co KG filed Critical SATA GmbH and Co KG
Priority to CN202480030147.7A priority Critical patent/CN121152686A/zh
Publication of WO2025190526A1 publication Critical patent/WO2025190526A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/08—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point
    • B05B7/0807—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets
    • B05B7/0815—Spray pistols; Apparatus for discharge with separate outlet orifices, e.g. to form parallel jets, i.e. the axis of the jets being parallel, to form intersecting jets, i.e. the axis of the jets converging but not necessarily intersecting at a point to form intersecting jets with at least one gas jet intersecting a jet constituted by a liquid or a mixture containing a liquid for controlling the shape of the latter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B7/00—Spraying apparatus for discharge of liquids or other fluent materials from two or more sources, e.g. of liquid and air, of powder and gas
    • B05B7/02—Spray pistols; Apparatus for discharge
    • B05B7/06—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane
    • B05B7/062—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet
    • B05B7/066—Spray pistols; Apparatus for discharge with at least one outlet orifice surrounding another approximately in the same plane with only one liquid outlet and at least one gas outlet with an inner liquid outlet surrounded by at least one annular gas outlet
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/3033—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head
    • B05B1/304—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve
    • B05B1/3046—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a lift valve the valve element, e.g. a needle, co-operating with a valve seat located downstream of the valve element and its actuating means, generally in the proximity of the outlet orifice

Definitions

  • Air separation ring for supplying atomizing air and shaping air within a paint spray gun
  • the invention relates to an air separation ring for supplying atomizing air and shaping air within a paint spray gun, a paint spray gun and a use of a nozzle in such a paint spray gun.
  • Paint spray guns are generally known in the art and are used, for example, in automotive workshops for painting cars. Paint spray guns are used to atomize flowable material and apply it to a surface. The material to be applied can be either liquid or powder. Paint guns feature different air streams flowing within the spray gun and serving to convey the paint stream, atomize the paint stream, and/or shape the paint stream. An air separation ring is used to direct the different air streams and/or to separate the areas for the different air streams. The restricted geometric conditions within the paint gun make directing the air streams difficult.
  • an air separation ring for supplying atomizing air and shaping air within a paint spray gun, comprising: a ring element configured to be connected to a paint spray gun body on a first side of the ring element and to be connected to a nozzle on a second side of the ring element; wherein the ring element has a lateral surface configured to be arranged between a first supply bore of a paint spray gun body for atomizing air and a second supply bore of the paint spray gun body for shaping air and to guide the atomizing air separately from the shaping air; wherein the ring element has a bulge on the lateral surface of the ring element configured to be connected via the first supply bore of the paint spray gun body for atomizing air to be arranged so that the atomizing air is guided into an inner region of the ring element, and/or wherein the ring element has an indentation on the lateral surface of the ring element, which is designed to be arranged over the second supply bore of the paint spray gun body
  • paint spray gun refers in particular to a hand-held paint dispensing unit with a trigger handle for actuating a valve configured to release a paint flow and/or for actuating a valve configured to release a compressed air flow.
  • the terms "paint spray gun,” “paint nozzle,” or other designations containing the terms “paint” or “color” are not to be understood as restricting these materials.
  • the paint spray gun according to the invention can be used to spray, for example, paint, adhesive, or varnish, in particular basecoat and clearcoat, both solvent-based and water-based, as well as liquids for the food industry, wood preservatives, or other liquids.
  • the paint spray gun mentioned can be a hand-held spray gun, an automatic or robotic gun, in addition to being a hand-held spray gun.
  • Hand-held paint spray guns are primarily used by craftsmen, especially painters, carpenters, and varnishers.
  • Automatic and robot guns are generally used in conjunction with a painting robot or a painting machine for industrial applications.
  • a manual spray gun into a painting robot or a painting machine.
  • a paint gun according to the invention designed as a hand-held paint gun can be designed as a gravity-feed gun with a paint cup arranged above the paint gun body, from which the material to be sprayed flows into and through the paint channels essentially by gravity and by vacuum at the front end of the paint nozzle.
  • the paint gun according to the invention can be a side-feed gun, in which the paint cup is arranged laterally on the paint gun body, and in which the material is fed to the gun by gravity and by vacuum at the front end of the material nozzle.
  • the paint gun according to the invention can be designed as a suction or suspended-cup gun with a paint cup arranged below the paint gun body, from which the material to be sprayed is sucked out of the cup essentially by vacuum.
  • the spray gun according to the invention can be designed as a pressure cup gun, in which the cup is arranged below, above or to the side of the spray gun body and is pressurized, whereupon the material to be sprayed is forced out of the cup.
  • the spray gun according to the invention can be a pressure-operated gun, in which the material to be sprayed is drawn from a paint container by means of a hose or via a pump is supplied to the spray gun.
  • the paint gun according to the invention can be a low-pressure gun, in particular an HVLP gun, with an internal nozzle pressure of a maximum of 10 psi or 0.7 bar, whereby transfer rates of more than 65% are achieved.
  • nozzle arrangement according to the invention can be used in all of the aforementioned types of paint guns.
  • spray gun body refers in particular to a housing designed to arrange the components of a spray gun relative to one another and to at least partially enclose them.
  • the spray gun body in particular has a handle.
  • a needle valve for applying paint and an air valve for releasing compressed air, a compressed air connection, and a paint connection are arranged.
  • a paint nozzle body is arranged on the spray gun body.
  • the spray gun body in particular has an interface for the paint nozzle body, and the paint nozzle body has a corresponding interface.
  • the interfaces are in particular designed as threads.
  • the paint spray gun may include a compressed air connection, a paint needle, a trigger for opening an air valve and moving the paint needle out of the paint nozzle outlet, a round-to-wide jet regulator for adjusting the ratio of atomizing air to horn air to shape the paint jet, an air micrometer for adjusting the spray pressure, a material flow regulator for adjusting the maximum material flow rate, a material connection, paint channels for directing the material to be sprayed from a material inlet to the material outlet, a suspension hook, and/or an analog or digital pressure gauge.
  • the paint spray gun body may be made of plastic or metal.
  • nozzle in this case means a nozzle, in particular a paint nozzle, which is designed to dispense paint
  • nozzle in this case means a nozzle, in particular an air nozzle, which is designed to dispense air, in particular atomizing air, and/or shaping air, which can also be referred to as horn air.
  • the nozzle has, in particular, an interface for mounting on the paint gun body.
  • the nozzle has, in particular, an interface for connecting to an air separation ring.
  • the interface can be a butt joint, wherein the nozzle is pressed against the air separation ring when it is connected, in particular screwed, to the paint gun body.
  • the air separation ring is arranged, in particular, between the nozzle and the paint gun body.
  • a further element, in particular a seal can be arranged between the nozzle and the air separation ring.
  • a further element, in particular a seal can be arranged between the air separation ring and the spray gun body.
  • atomizing air refers specifically to air, in particular an air flow, designed to convey paint from the nozzle and/or atomize the paint, particularly via the Bernoulli effect.
  • the atomizing air flows, in particular, from an annular gap formed between a paint nozzle and an air cap surrounding this paint nozzle.
  • shaping air refers specifically to air, in particular an air flow designed to shape a paint stream, in particular a spray jet, after it has been expelled from the nozzle.
  • the shaping air flows out, in particular, from an air cap, in particular from the horns of an air cap.
  • the term “ring element” refers in particular to a structural element.
  • the ring element in particular has an at least partially circular cross-section.
  • the ring element in particular has an at least partially annular cross-section.
  • the ring element can in particular have at least partially an angular, in particular a quadrangular, in particular square, triangular, or polygonal cross-section.
  • the ring element in particular can at least partially have an elliptical cross-section.
  • the ring element is in particular one-piece.
  • the ring element is, for example, an injection-molded component.
  • the ring element is, for example, made of plastic.
  • the plastic comprises, for example, one of the following: PPA, PP, PE.
  • the plastic comprises, for example, a filled plastic.
  • feed bore refers specifically to the outlet opening of a flow channel located inside the gun body and supplied with compressed air.
  • the flow channel can exit vertically from one end of the spray gun body or at an angle.
  • inner region in the present case means in particular a region within a lateral surface of the ring element, in particular in the radial direction within a lateral surface of the ring element.
  • outer region in the present case means in particular a region outside the lateral surface of the ring element, in particular in the radial direction outside a lateral surface of the ring element.
  • bulge in this case refers in particular to an at least partial distortion of the lateral surface of the ring element that extends away from the center of the ring element.
  • the term "bulge” in this case refers in particular to an at least partial distortion of the lateral surface of the ring element, wherein the region of the distortion of the lateral surface is further away in the radial direction from the center of the ring element or from the longitudinal axis of the ring element than the region of the undistorted lateral surface of the ring element, in particular the region of the undistorted lateral surface of the ring element is at the same height as the region of the distortion and/or the region of the undistorted lateral surface of the ring element is at the same point along the circumference of the ring element but at a different height.
  • indentation refers in particular to an at least partial distortion of the lateral surface of the ring element that extends towards the center of the ring element.
  • indentation in this case refers in particular to an at least partial distortion of the lateral surface of the ring element, wherein the region of the distortion of the lateral surface is closer in the radial direction to the center of the ring element or to the longitudinal axis of the ring element than the region of the undistorted lateral surface of the ring element, in particular the region of the undistorted lateral surface of the ring element is at the same height as the region of the distortion and/or the region of the undistorted lateral surface of the ring element is at the same point along the circumference of the ring element but at a different height.
  • the term "tapered" means in particular that the distortion of the lateral surface of the ring element decreases over the height of the lateral surface of the ring element.
  • the distortion decreases from the first side facing the paint gun body to the second side facing the nozzle.
  • the lateral surface of the ring element is more distorted on the first side facing the paint gun body than the lateral surface of the ring element on the second side facing the nozzle.
  • the shape of the ring element deviates more from a circular shape on the first side facing the paint gun body than on the second side facing the nozzle.
  • the ring element has a circular shape on its second side facing the nozzle.
  • the ring element has a circular shape on its second side facing the nozzle and a non-circular shape on its first side facing the paint gun body.
  • the ring element rests on the nozzle with an annular contact surface and on the spray gun body with a non-annular contact surface.
  • the ring element rests on the spray gun body with a contact surface that has the shape of a distorted ring.
  • the ring element rests on the spray gun body with a contact surface in the shape of a ring with a bulge and/or a recess.
  • the lateral surface of the ring element extends in the region of the bulge from the first side to the second side in a radial direction from the outside to the inside.
  • the lateral surface of the ring element extends in the region of the recess from the first side to the second side in a radial direction from the inside to the outside.
  • the invention is based on the realization that the installation space in paint spray guns is limited.
  • This limited installation space means that various supply bores, in particular a first supply bore, from which atomizing air in particular can flow, and a second supply bore, from which shaping air in particular can flow, are located very close to one another.
  • the air separation ring is generally arranged concentrically around the longitudinal axis of the nozzle.
  • the first supply bore and the second supply bore are sometimes at the same or a similar radial distance from the longitudinal axis. Nevertheless, the air separation ring must guide the air flowing out of the first supply bore, in particular atomizing air, and the air flowing out of the second supply bore, in particular shaping air, separately from one another.
  • the air separation ring cannot be designed as an ideal hollow cylinder with a constant radius. Furthermore, an important task of the air separation ring is to distribute the atomizing air and the shaping air evenly in the air separation ring so that the atomizing air can escape evenly and the shaping air can escape evenly. Furthermore, this should be achieved with as little throttling of the atomizing air and the shaping air as possible.
  • the invention meets these requirements by proposing a distorted ring element in which the bulge and/or the indentation tapers. The taper reduces the throttling. Furthermore, the taper of the bulge allows the shaping air in the outer area to flow more easily over this bulge.
  • the taper in the inner area allows the atomizing air in the inner area to flow more easily over this indentation. Overall, this has a positive effect on the throttling, the space required and the even distribution of the air flows. This enables efficient and high-quality painting.
  • an end face of the second side of the ring element is configured to at least partially overlap the first feed bore and/or at least partially the second feed bore.
  • first feed bore and/or the second feed bore lie on the undistorted cross-sectional area of the ring element.
  • an imaginary projection of the end face of the second side of the ring element in the axial direction onto the spray gun body at least partially overlaps the first feed bore. and/or at least partially the second feed bore.
  • a base area of the bulge and/or the indentation on the first side is configured to overlap the first feed bore and/or the second feed bore in the range of 2/3 to 4/5.
  • the ring element has a baffle plate in the region of the second side in the inner region of the ring element for changing the flow direction of the atomizing air, wherein the baffle plate is arranged at least partially in a peripheral region of the ring element in which the bulge is arranged.
  • the term "in the region of the second side” means in particular that the baffle plate is arranged closer to the second side of the ring element than to the first side of the ring element.
  • baffle plate in this case refers to a structural element designed to change, in particular reverse, the flow direction.
  • the baffle plate can be designed as a type of aperture.
  • the baffle plate can be a flat plate.
  • the term "baffle plate” in this case refers to a structural element onto which at least a portion of the air, in particular a portion of the air flowing out of the paint spray gun body, in particular from the first supply bore and/or from the second supply bore, strikes, in particular impacts.
  • the air strikes the baffle plate at a right angle.
  • the air is decelerated by the baffle plate.
  • the air is deflected by the baffle plate.
  • the flow of atomizing air is first directed into the interior through the bulge and then further directed in both circumferential directions (i.e., clockwise and counterclockwise) by the baffle plate. This can result in better distribution.
  • the impact plate has through-holes.
  • the impact plate is designed to be continuous; in particular, the impact plate has no through-holes.
  • the baffle plate extends over less than half the circumference of the ring element.
  • the baffle plate extends over approximately one-eighth of the circumference of the ring element.
  • the ring element has an air distribution plate in the region of the second side in the inner region of the ring element for directing the atomizing air in the circumferential direction.
  • the term "air distribution plate” refers to a structural element designed to direct, in particular distribute, the atomizing air in the circumferential direction.
  • the air distribution plate is arranged adjacent to the baffle plate.
  • the air distribution plate surrounds the baffle plate on at least two sides of the baffle plate.
  • the baffle plate is arranged in the center of the air distribution plate.
  • the air distribution plate is crescent-shaped.
  • the air distribution plate and baffle plate are designed as a single piece.
  • the air distribution plate extends over less than three-quarters of the circumference of the ring element.
  • the air distribution plate extends over at most half the circumference of the ring element, in particular over less than half the circumference of the ring element.
  • the air exiting the first supply bore in the spray gun body first strikes the inner surface of the bulge of the ring element, from which it is directed to the pocket and/or the baffle plate.
  • a portion of the air exiting the first supply bore may also directly strike the pocket and/or the baffle plate, whereupon the air is deflected by the pocket and/or the baffle plate, particularly circumferentially to the left and right.
  • the air is then directed a short distance further in the circumferential direction by the air distribution plate before flowing into an air chamber formed by the outside of the paint nozzle and the inside of the air cap, and then out of the annular gap formed by the air cap and the paint nozzle cone.
  • the air separation ring in particular the ring element, unlike air distribution rings according to the prior art, does not have any air distribution elements, in particular air distribution surfaces, which extend substantially over the entire circumference of the air separation ring, in particular the ring element.
  • the ring element has a baffle plate in the outer region of the second side for changing the flow direction of the shaping air, wherein the baffle plate is arranged at least partially outside a peripheral region of the ring element in which the indentation is located.
  • this baffle plate can be arranged adjacent to an air distribution plate.
  • the ring element in particular a baffle plate of the ring element, has a pocket which is directed towards the first side.
  • the pocket refers to a kind of basin into which the atomizing air or shaping air initially flows before flowing out again and then distributing evenly in both circumferential directions.
  • the aforementioned baffle plate can have lateral walls.
  • the indentation of the ring element tapers non-linearly from the first side to the second side and/or the bulge of the ring element tapers non-linearly from the first side to the second side.
  • the indentation of the ring element tapers linearly from the first side to the second side and/or the bulge of the ring element tapers linearly from the first side to the second side.
  • the bulge of the ring element tapers non-linearly from the first side to the second side, and the indentation of the ring element essentially does not taper.
  • the lateral surface of the ring element runs essentially parallel to the longitudinal axis of the ring element in the region of the indentation from the first side to the second side.
  • the ring element has a first inner diameter in the region of the first side and a second inner diameter in the region of the second side, wherein the first inner diameter is larger than the second inner diameter. This applies in particular in the regions away from the indentation and/or away from the bulge.
  • the ring element has connecting elements on the first side for connection to the paint spray gun body.
  • the connecting elements are, for example, plug-in elements that are inserted into corresponding recesses (i.e., connecting elements) in the spray gun body.
  • the connecting elements are, for example, locking elements.
  • the air distribution ring comprises a plastic, in particular a filled plastic, in particular PPS, as material.
  • Another aspect concerns the use of a nozzle in a paint spray gun described in more detail above.
  • Figure 1 shows an exemplary spray gun body
  • Figure 2 shows an exemplary paint spray gun body with an exemplary air separation ring according to the invention
  • Figure 3 shows an exemplary air separation ring according to the invention in a first view
  • Figure 4 shows an exemplary air separation ring according to the invention in a second view
  • Figure 5 shows another exemplary air separation ring according to the invention
  • Figure 6 shows another exemplary air separation ring according to the invention in a first view
  • Figure 7 shows the further exemplary air separation ring according to the invention in a second view
  • Figure 8 shows the further exemplary air separation ring according to the invention in a third view
  • Figure 9 shows the further exemplary air separation ring according to the invention in a fourth view
  • Figure 10 shows the further exemplary air separation ring according to the invention in a fifth view
  • Figure 11 shows a section of an exemplary paint gun according to the invention.
  • FIG 3 shows an air separation ring 100 in a first view.
  • the air separation ring 100 comprises a ring element 101.
  • the ring element 101 is configured to be connected to a paint spray gun body on a first side 103 of the ring element 101 and to a nozzle on a second side 104 of the ring element 101.
  • the ring element 101 has a lateral surface 102.
  • the end face 105 of the ring element 101 covers or overlaps, in the installed state, at least partially the first and/or second supply bore (see Figure 1 or 2).
  • the ring element 101 has an indentation 107 and a bulge 108.
  • the indentation 107 tapers from the first side 103 to the second side 104.
  • the protrusion 108 tapers from the first side 103 to the second side 104.
  • a baffle plate 106 for changing the flow direction of the atomizing air is arranged in the interior of the ring element 101. This baffle plate is arranged opposite the protrusion 108.
  • FIG 4 shows an exemplary air separation ring 200 according to the invention in a second view, namely the bottom view.
  • the air separation ring 200 has connecting elements 201, 202, and 203 for connecting the air separation ring 200 to the paint gun body (not shown in Figure 4).
  • the baffle plate 204 has a pocket 205.
  • the air separation ring 200 has a ring element 222 with a circumferential surface 212.
  • the ring element 222 has a first side 213 and a second side 214.
  • Figure 5 shows another exemplary air separation ring 400 according to the invention, which comprises a ring element 401, wherein only the second side 404 and the end face 415 of the ring element 401 are visible in the top view in Figure 5.
  • the pocket 405 or the impact plate of the pocket 405 has no through-holes, unlike in the previously shown embodiments.
  • FIG. 6 shows a further exemplary air separation ring 500 according to the invention in a first view, namely obliquely from above.
  • the air separation ring 500 has a ring element 511 with a lateral surface 512, a first side 513, a second side 514, an end face 525 and a pocket 505.
  • the ring element 511 has a bulge 508 and an indentation 507.
  • the ring element 511 has in the region of the second side 514 in the inner region 55 of the
  • the ring element 511 has an air distribution plate 506 for directing the atomizing air in the circumferential direction.
  • the air distribution plate 506 extends circumferentially to the left and right of the pocket 505 and is crescent-shaped.
  • the outer region 56 is located outside the ring element 511.
  • FIG. 7 shows the further exemplary air separation ring 500 according to the invention in a second view, namely obliquely from below.
  • the air separation ring 500 has a ring element 511 with a lateral surface 512, a first side 513, a second side 514, an end face 525, and a pocket 505.
  • the ring element 511 has a baffle plate 504 for changing the flow direction of the atomizing air, wherein the baffle plate 504 is arranged at least partially in a circumferential region of the ring element 511 in which the bulge 508 is arranged.
  • the ring element 511 has a bulge 508 and an indentation 507.
  • the ring element 511 has, in the region of the second side 514 in the outer region of the ring element 511, a baffle plate 515 for changing the flow direction of the shaping air, wherein the baffle plate 515 is arranged at least partially outside a circumferential region of the ring element 511 in which the indentation 507 is arranged.
  • the ring element 511 In the region of the second side 514 in the inner region of the ring element 511, the ring element 511 has an air distribution plate 506 for directing the atomizing air in the circumferential direction.
  • the air distribution plate 506 extends in the circumferential direction to the left and to the right from the pocket 505 and is crescent-shaped.
  • the air separation ring 500 has connecting elements 501, 502, 503 for connecting the air separation ring 500 to the paint gun body (not shown in Figure 7).
  • the connecting elements 501, 502, 503 have a non-circular cross-section, but rather a triangular cross-section with rounded corners.
  • the connecting elements, in particular the receiving openings, in the paint gun body preferably have a cross-section corresponding in shape and size to the cross-section of the connecting elements 501, 502, 503.
  • Figure 8 shows the further exemplary air separation ring 500 according to the invention in a third view, namely a top view. Clearly visible here are the second side 514 and the end face 525 of the ring element 511, as well as the bulge 508, the pocket 505, and the air distribution plate 506.
  • Figure 9 shows the further exemplary air separation ring 500 according to the invention in a fourth view, namely from below. Clearly visible here are the first side 513 of the ring element 511, the baffle plate 504, the pocket 505, the air distribution plate 506, the indentation 507, the bulge 508, the baffle plate 515, and the connecting elements 501, 502, 503.
  • Figure 10 shows the further exemplary air separation ring 500 according to the invention in a fifth view, namely a side view. It is particularly clearly visible here that the bulge 508 on the lateral surface 512 of the ring element 511 tapers non-linearly from the first side 513 to the second side 514.
  • the bulge 508 initially tapers only slightly or not at all from the first side 513 to the second side 514; in the region of the middle height of the ring element 511, the bulge 508 tapers more sharply, and in the region of the second side 514, the bulge 508 tapers again slightly or not at all. It is also clearly visible in Figure 10 that the connecting elements 501, 502, 503 are at least partially hook-shaped.
  • FIG 11 shows a section of a sectional view of an exemplary paint spray gun 300 according to the invention.
  • the paint spray gun 300 comprises the paint spray gun body 301.
  • the nozzle 302, in particular a paint nozzle, is screwed into the paint spray gun body 301.
  • the air separation ring 303 is arranged between the paint spray gun body 301 and the nozzle 302.
  • the line 304 indicates the flow path of the atomizing air.
  • the line 305 indicates the flow path of the shaping air, with the shaping air being guided through the air cap 306.

Landscapes

  • Nozzles (AREA)

Abstract

La présente invention concerne un anneau de séparation d'air (500) destiné à fournir de l'air d'atomisation et à mettre de l'air en forme à l'intérieur d'un pistolet de pulvérisation de peinture (300), comprenant un élément annulaire (511), l'élément annulaire (511) présentant une surface latérale (512), l'élément annulaire (511) présentant un renflement (508) sur la surface latérale (512) de l'élément annulaire (511), lequel renflement est conçu pour être agencé sur le premier trou d'alimentation (11) du corps (10, 50, 301) de pistolet de pulvérisation de peinture afin d'atomiser de l'air et/ou l'élément annulaire (511) présentant une indentation (54, 107, 507) sur la surface latérale (102, 212, 512) de l'élément annulaire (511), ladite indentation étant conçue pour être agencée sur le second trou d'alimentation (12, 57) du corps de pistolet de pulvérisation de peinture (10, 50, 301) afin de mettre en forme l'air, l'indentation (507) s'effilant à partir du premier côté (513) vers le second côté (514) et/ou le renflement (508) s'effilant à partir du premier côté (513) vers le second côté (514).
PCT/EP2024/086842 2024-03-14 2024-12-17 Anneau de séparation d'air destiné à fournir de l'air d'atomisation et à mettre en forme de l'air à l'intérieur d'un pistolet de pulvérisation de peinture Pending WO2025190526A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202480030147.7A CN121152686A (zh) 2024-03-14 2024-12-17 用于在喷漆枪内输送雾化空气和造型空气的空气分离环

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102024107327.6A DE102024107327A1 (de) 2024-03-14 2024-03-14 Lufttrennring zum Zuführen von Zerstäuberluft und Formluft innerhalb einer Lackierpistole
DE102024107327.6 2024-03-14

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WO2025190526A1 true WO2025190526A1 (fr) 2025-09-18

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PCT/EP2024/086842 Pending WO2025190526A1 (fr) 2024-03-14 2024-12-17 Anneau de séparation d'air destiné à fournir de l'air d'atomisation et à mettre en forme de l'air à l'intérieur d'un pistolet de pulvérisation de peinture

Country Status (3)

Country Link
CN (1) CN121152686A (fr)
DE (1) DE102024107327A1 (fr)
WO (1) WO2025190526A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2286545A (en) * 1994-02-18 1995-08-23 Itw Ltd An improved spray gun
JPH11244741A (ja) * 1997-12-24 1999-09-14 Wagner Internatl Ag 流体噴霧装置
EP4309800A1 (fr) * 2022-07-18 2024-01-24 Aircom Srl Pistolet de peinture muni d'une buse améliorée

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8802130D0 (en) * 1988-02-01 1988-03-02 Devilbiss Co Spraygun
US5090623A (en) * 1990-12-06 1992-02-25 Ransburg Corporation Paint spray gun
CN201064746Y (zh) * 2007-06-22 2008-05-28 林帮法 环保型省料喷漆枪

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2286545A (en) * 1994-02-18 1995-08-23 Itw Ltd An improved spray gun
JPH11244741A (ja) * 1997-12-24 1999-09-14 Wagner Internatl Ag 流体噴霧装置
EP4309800A1 (fr) * 2022-07-18 2024-01-24 Aircom Srl Pistolet de peinture muni d'une buse améliorée

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CN121152686A (zh) 2025-12-16
DE102024107327A1 (de) 2025-09-18

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