EP2181773A1 - Dispositif de pulvérisation - Google Patents

Dispositif de pulvérisation Download PDF

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Publication number
EP2181773A1
EP2181773A1 EP08019161A EP08019161A EP2181773A1 EP 2181773 A1 EP2181773 A1 EP 2181773A1 EP 08019161 A EP08019161 A EP 08019161A EP 08019161 A EP08019161 A EP 08019161A EP 2181773 A1 EP2181773 A1 EP 2181773A1
Authority
EP
European Patent Office
Prior art keywords
outlet opening
riser
gun housing
annular channel
delivery line
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.)
Withdrawn
Application number
EP08019161A
Other languages
German (de)
English (en)
Inventor
Alfred Goehring
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.)
J Wagner GmbH
Original Assignee
J Wagner GmbH
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 J Wagner GmbH filed Critical J Wagner GmbH
Priority to EP08019161A priority Critical patent/EP2181773A1/fr
Priority to DE202008017954U priority patent/DE202008017954U1/de
Priority to US12/590,086 priority patent/US20100133358A1/en
Publication of EP2181773A1 publication Critical patent/EP2181773A1/fr
Withdrawn legal-status Critical Current

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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
    • B05B7/24—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 with means, e.g. a container, for supplying liquid or other fluent material to a discharge device
    • B05B7/2402—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device
    • B05B7/2405—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle
    • B05B7/2435—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle the carried liquid and the main stream of atomising fluid being brought together by parallel conduits placed one inside the other
    • B05B7/2437—Apparatus to be carried on or by a person, e.g. by hand; Apparatus comprising containers fixed to the discharge device using an atomising fluid as carrying fluid for feeding, e.g. by suction or pressure, a carried liquid from the container to the nozzle the carried liquid and the main stream of atomising fluid being brought together by parallel conduits placed one inside the other and a secondary stream of atomising fluid being brought together in the container or putting the carried fluid under pressure in the container
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00—Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/30—Dip tubes
    • 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
    • B05B7/0081—Apparatus supplied with low pressure gas, e.g. "hvlp"-guns; air supplied by a fan

Definitions

  • the invention relates to a spray device according to the preamble of claims 1 or 2.
  • the ink to be delivered has a high viscosity, that is, if the paint is extremely viscous, it becomes more difficult to move this viscous medium in sufficient quantity from the reservoir in the direction of the outlet opening, since the flow resistance in the riser and in the delivery line , which opens into the outlet opening, enlarged.
  • the HVLP systems on the market either have a blower inserted into the gun housing, through which ambient air is forced into the interior of the gun housing, to generate the overpressure of 50 to 689 hPa prevailing there, or the HVLP systems are connected via a hose connected to a blower or other source of compressed air through which or through which the pressure necessary for processing the medium air pressure inside the gun body is achieved.
  • the inside diameter of the riser tubes, through which the medium to be processed is transported into the delivery line inside the spray gun has a value which is approximately between 6 to 8 mm.
  • the inside diameter of the outlet opening, into which the delivery line discharges, is between 2.0 and 4.0 mm in the commercial HVLP systems. Accordingly, the cross-sectional area of the riser flowed through is approximately 38.5 mm 2 and the cross-sectional area of the outlet opening is approximately 3.15 to 12.56 mm 2 .
  • the performance of the blower is increased by providing single or multi-stage blowers containing one or more impellers.
  • Graco offers three HVLP systems with different power levels, namely HVLP 2500 (two-stage), 3800 (three-stage) and 4900 (four-stage). This now media can be processed with a higher viscosity, because with less liquid media less power is needed to spray this than a high-viscosity medium.
  • the delivery volume is adapted to the viscosity of the medium to be processed by means of the performance increase of the blower.
  • the manufacturers of commercial HVLP systems usually use higher air pressures to provide a sufficient flow rate of the medium to be processed when highly viscous media are to be sprayed.
  • On or in the spray gun are from the manufacturers No constructive redesigns performed, because the performance increase of the individual blower to produce a higher air pressure are sufficient after other long-term developments to provide the required delivery volume.
  • the length, which is intended as a conveying path for the color is extremely large.
  • the distance between the outlet opening and the inlet opening of the riser in the paint delivery line is often designed to be as long as possible in order to extract the outlet opening from the plane formed by the container.
  • valve needles inserted into the outlet opening to the cross-sectional area of the outlet opening of the paint nozzle is often offered by the manufacturers of the known HVLP systems.
  • This design measure is to be achieved that media with different viscosities can be processed.
  • the highly viscous medium is first to be transported and moved through the riser and then through the delivery line, it is not sufficient to increase the annular gap between the valve needle and the inner contour of the outlet opening, because of the prevailing in the riser and the paint delivery line flow resistance Prevent that the flow rate is increased by this constructive measure.
  • An increase in the ink flow is achieved in the known HVLP systems solely by the fact that the performance of the fan is adapted to the high-viscosity media in which two or more impellers are driven by the blower.
  • the riser is often inserted inside the gun housing in a pipe socket, which is integrally formed on the spray gun and opens directly into the delivery line. It is thus not readily possible to increase the cross-sectional area of the riser.
  • the cross-sectional area of the riser is at least 80 mm 2 or preferably 200 mm 2 , it is ensured that the filled in the reservoir and to be processed medium can be promoted with a lower flow resistance through the riser, so that at a constant, so constant fan power a correspondingly sufficient volume flow of the medium through the riser pipe in the direction of the outlet opening of the delivery line is present.
  • the ratio between the cross-sectional area of the riser pipe and the cross-sectional area of the outlet opening is between 16 and 196, preferably between 25 and 41, because this ensures that the volume flow of the medium to be processed is uniform over the entire length of the conveyor line without obstructing the flow can be promoted. Consequently, an optimum cross-sectional area is provided for the entire conveying path through which the medium flows, and the power applied by the blower for commercial spray guns is also sufficient for the processing of highly viscous media which have an increased flow resistance due to their viscosity.
  • FIG. 1 is to be taken a spray gun 1, which consists of a gun body 2 to which a handle 3 and a reservoir 4 are removably attached.
  • a to be processed by the spray gun 1 highly viscous medium 5, in particular paints for the painting of walls and ceilings, filled.
  • a trigger 6 is pivotally mounted on the gun body 2, the adjustment can be limited by an aligned in the direction of the handle 3 screw 7.
  • the trigger lever 6 is connected via intermediate links which are not shown, in frictional operative connection with an axially movable in the interior of the gun body 2 valve body 12, which consequently upon actuation of the trigger lever 6 in the direction of the handle 3, against the force of a spring 29 can be moved.
  • an inlet opening 25 is incorporated and inside the gun housing 2, a blower 8 is provided.
  • the fan 8 and the inlet opening 25 can be replaced by a hose which is connected to a in a corresponding blower or other suitable compressed air source.
  • a circular feed line 9 is provided, in which the valve body 12 is inserted and extends axially aligned therewith.
  • the delivery line 9 opens into an outlet opening 11, which is closed by the valve body 12 in the unactuated state of the trigger lever 6.
  • the delivery line 9 is enclosed by a ring channel 10, which communicates with the fan 8 such that the amount of air sucked through this in the annular channel 10 in the direction of the outlet opening 11, but without being in communication with the interior of the delivery line 9, is transported.
  • a ring channel 10 which communicates with the fan 8 such that the amount of air sucked through this in the annular channel 10 in the direction of the outlet opening 11, but without being in communication with the interior of the delivery line 9, is transported.
  • an overpressure in the annular channel 10 of about 50 to 689 hPa is generated with respect to the prevailing ambient air pressure.
  • HVLP ⁇ high volume low pressure Such a pressure level is referred to in specialist terminology as HVLP ⁇ high volume low pressure.
  • the air flow 24 sucked in by the fan 8 is partially discharged via a hose 13 in the region of the annular channel 10.
  • the tube 13 is mounted between the annular channel 10 and the interior of the reservoir 4 and opens into it, so that the pressure prevailing in the annular channel 10 overpressure is introduced by means of the hose 13 into the interior of the reservoir 4 and generates a correspondingly sized dynamic pressure there, through which the medium 5 filled in the interior of the storage container 4 can be transported via a riser 14 into the delivery line 9.
  • the riser 14 consists of a removably attached to the reservoir 4 pipe socket 19 and a molded on the gun body 2 feed pipe 20.
  • the inner diameter of the pipe socket 19 is dimensioned so large that it can be pushed over the outer diameter of the supply 20. Consequently, the pipe socket 19 and the feed pipe 20 are separable from each other to allow a good cleaning of these parts.
  • a desired spray pattern 22 is shown on a wall 23.
  • the spray pattern 22 is supposed to have a rectangular shape to be vertical or horizontal movements of the spray gun 1 over a large area to spray the wall 23 with the medium 5 can.
  • two flow channels 21, which are arranged diametrically opposite one another, are provided laterally next to the outlet opening 11.
  • an air cap 27 is screwed onto the male housing 28 onto an external thread 28, which is incorporated on the outside of the gun housing 2.
  • the two flow channels 21 are incorporated, which communicate with the annular channel 10, so that the injected into the annular channel 10 air are discharged through the flow channels 21 to the outside.
  • the valve body 12 is in FIG. 2 shown in an open position, so that the outlet opening 11 is released.
  • the prevailing in the riser 14 and in the delivery line 9 pressure 40 causes the medium 5 flows from the reservoir 4 and the delivery line 9 in the direction of the outlet opening 11 and through the outlet opening 11 surrounding air stream 24 'atomized.
  • the position of the air cap 27 is not fixed with respect to the gun body 2 and may be changed in position.
  • the filled in the reservoir 4 color 5 is initially viscous or highly viscous and is conveyed in liquid form through the riser 14 to the outlet opening 11.
  • By the laterally exiting air portions 24 'of the air jet 24 color drops are entrained and atomized, so that this color-air-jet mixture thus generated is designated by the reference numeral 5'.
  • the cross-sectional area of the Riser 14 sized over its entire length at least 150 mm 2 large, preferably 200 mm 2 large.
  • the diameter of the outlet opening 11 is 2.5 mm, so that the cross-sectional area 16 of the outlet opening 11 4.9 mm 2 results. This means that the cross-sectional ratios between the cross-sectional area 16 of the outlet opening 11 and the cross-sectional area 15 of the riser 14 are between 31 and 41.
  • Such a structural design of the cross-sectional areas through which the medium 5 is to be deployed advantageously achieves that a sufficient fluid flow of the medium 5 can be generated while the power of the fan 8 remains constant, without the power that is required to be applied to the fan 8 being conveyed of highly viscous media 5.
  • the entire length of the conveying path 17 of the riser 14 and the conveying path 18 of the conveying line 9 is a maximum of 250 mm.
  • the conveyor line 18 of the delivery line 9 is dimensioned as small as possible. This means that the outlet opening 11 is arranged as close as possible to the junction of the riser 14 in the gun housing 2.
  • the conveyor line 18 of the conveyor line 9 should be between 30 and 60 mm.
  • the flow-through cross-sectional area 15 of the riser 14 is about 80 mm 2 . Even with such a geometric dimension of the riser 14 positive flow effects can be determined, which lead to the expended power of the blower 8 can be kept almost constant even when processing high-viscosity media, ie a significant increase in performance of the blower 8 for the drive of several Impellers is not required.
  • An exact upper limit for the flow-through cross-sectional area 15 of the riser 14 is at a value of about 962 mm 2 ; this corresponds approximately to a diameter of 35 mm. Larger sized risers 14 are uninteresting due to the significant increase in the volume of the spray device 1.
  • the ratio between the flow-through cross-sectional area 15 of the riser 14 and the cross-sectional area 16 of the outlet opening 11 should carry the value 25 in a technically meaningful manner as the lower limit and the value 196 as the upper limit. This corresponds for example to a diameter ratio of 10.1 mm for the riser 14 and 2 mm for the outlet opening 11.
  • the upper limit is formed by a riser 14 diameter of 35 mm and a diameter of the outlet opening 11 of 2.5 mm.

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EP08019161A 2008-11-03 2008-11-03 Dispositif de pulvérisation Withdrawn EP2181773A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP08019161A EP2181773A1 (fr) 2008-11-03 2008-11-03 Dispositif de pulvérisation
DE202008017954U DE202008017954U1 (de) 2008-11-03 2008-11-03 Spritz-Vorrichtung
US12/590,086 US20100133358A1 (en) 2008-11-03 2009-11-02 Spraying device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08019161A EP2181773A1 (fr) 2008-11-03 2008-11-03 Dispositif de pulvérisation

Publications (1)

Publication Number Publication Date
EP2181773A1 true EP2181773A1 (fr) 2010-05-05

Family

ID=40588278

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08019161A Withdrawn EP2181773A1 (fr) 2008-11-03 2008-11-03 Dispositif de pulvérisation

Country Status (3)

Country Link
US (1) US20100133358A1 (fr)
EP (1) EP2181773A1 (fr)
DE (1) DE202008017954U1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102773179A (zh) * 2012-07-11 2012-11-14 奉化市威优特电器有限公司 一种可充电直流式电喷枪
WO2013134182A1 (fr) * 2012-03-06 2013-09-12 3M Innovative Properties Company Pistolet pulvérisateur à conduit de surcompression interne
WO2020257186A1 (fr) * 2019-06-17 2020-12-24 Oms Investments, Inc. Appareil pulvérisateur de brume
US11950677B2 (en) 2019-02-28 2024-04-09 L'oreal Devices and methods for electrostatic application of cosmetics

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BRPI1005361A2 (pt) 2009-01-26 2020-08-18 3M Innovative Properties Company plataforma para pistolas de aspersão de líquidos, conjuntos de cabeça de aspersão de líquidos e pistola de aspersão de líquidos
EP3476492B1 (fr) 2011-02-09 2020-05-27 3M Innovative Properties Co. Pointes de buse et ensembles de tête de pulvérisation pour pistolets de pulvérisation de liquide
US9827581B2 (en) * 2011-03-15 2017-11-28 Silgan Dispensing Systems Corporation Dip tube connectors and pump systems using the same
CN103717314B (zh) 2011-07-28 2017-02-15 3M创新有限公司 用于液体喷枪的具有一体化气帽/喷嘴的喷雾头组件
IN2014CN02786A (fr) 2011-10-12 2015-07-03 3M Innovative Properties Co
KR102111467B1 (ko) 2012-03-23 2020-05-15 쓰리엠 이노베이티브 프로퍼티즈 컴파니 분리불가능 노즐을 갖는 스프레이 건 배럴
US10493473B2 (en) 2013-07-15 2019-12-03 3M Innovative Properties Company Air caps with face geometry inserts for liquid spray guns
US9950302B1 (en) 2014-01-13 2018-04-24 Crossford International, Llc Stand-alone chemical dispenser
CN103752442B (zh) * 2014-01-18 2017-02-08 浙江瑞丰五福气动工具有限公司 充电式手持电动喷枪
USD750333S1 (en) 2014-12-23 2016-02-23 Crossford International, Llc Chemical cleaning apparatus
CN204994473U (zh) * 2015-08-03 2016-01-27 上海爱农机电设备有限公司 便携式超细雾化机
EP3147031A1 (fr) * 2015-09-24 2017-03-29 Idfc Ag Système de dispersion de fluide
WO2017074337A1 (fr) 2015-10-28 2017-05-04 Crossford International, Llc Applicateur de produit chimique solide à main
CN112090618B (zh) * 2020-08-27 2021-08-24 浙江普莱得电器股份有限公司 一种雾化器
CN113102131A (zh) * 2021-04-16 2021-07-13 上海兰钧新能源科技有限公司 湿式涂布喷涂装置和湿式涂布装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1026021A (fr) * 1950-10-16 1953-04-22 Récipient pulvérisateur
US4989787A (en) * 1989-05-05 1991-02-05 Nikkel Robert E Liquid spray gun accessories
WO2003004172A1 (fr) * 2001-07-03 2003-01-16 Hermann Rugen Pistolet a peinture a generateur d'air comprime

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1906975A (en) * 1930-02-25 1933-05-02 Albert G Larson Spray gun
FR2194135A5 (fr) * 1972-07-28 1974-02-22 Sicmo Sam
US5078322A (en) * 1988-10-24 1992-01-07 Wagner Spray Tech Corporation Low pressure high volume spray gun

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1026021A (fr) * 1950-10-16 1953-04-22 Récipient pulvérisateur
US4989787A (en) * 1989-05-05 1991-02-05 Nikkel Robert E Liquid spray gun accessories
WO2003004172A1 (fr) * 2001-07-03 2003-01-16 Hermann Rugen Pistolet a peinture a generateur d'air comprime

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013134182A1 (fr) * 2012-03-06 2013-09-12 3M Innovative Properties Company Pistolet pulvérisateur à conduit de surcompression interne
RU2608490C2 (ru) * 2012-03-06 2017-01-18 3М Инновейтив Пропертиз Компани Распылитель со встроенным нагнетательным каналом
RU2608490C9 (ru) * 2012-03-06 2017-06-14 3М Инновейтив Пропертиз Компани Распылитель со встроенным нагнетательным каналом
EP4000744A1 (fr) * 2012-03-06 2022-05-25 3M Innovative Properties Co. Pistolet de pulvérisation à conduit de surcompression interne
CN102773179A (zh) * 2012-07-11 2012-11-14 奉化市威优特电器有限公司 一种可充电直流式电喷枪
US11950677B2 (en) 2019-02-28 2024-04-09 L'oreal Devices and methods for electrostatic application of cosmetics
WO2020257186A1 (fr) * 2019-06-17 2020-12-24 Oms Investments, Inc. Appareil pulvérisateur de brume
US11752511B2 (en) 2019-06-17 2023-09-12 Oms Investments, Inc. Mist sprayer apparatus

Also Published As

Publication number Publication date
DE202008017954U1 (de) 2010-12-23
US20100133358A1 (en) 2010-06-03

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