WO2005039782A1 - Conduit d’echappement d’un projecteur rotatif a turbine pneumatique - Google Patents
Conduit d’echappement d’un projecteur rotatif a turbine pneumatique Download PDFInfo
- Publication number
- WO2005039782A1 WO2005039782A1 PCT/FR2004/002674 FR2004002674W WO2005039782A1 WO 2005039782 A1 WO2005039782 A1 WO 2005039782A1 FR 2004002674 W FR2004002674 W FR 2004002674W WO 2005039782 A1 WO2005039782 A1 WO 2005039782A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gas
- space
- wall
- turbine
- exhaust
- Prior art date
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
- B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
- B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
- B05B5/04—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
- B05B5/025—Discharge apparatus, e.g. electrostatic spray guns
- B05B5/04—Discharge apparatus, e.g. electrostatic spray guns characterised by having rotary outlet or deflecting elements, i.e. spraying being also effected by centrifugal forces
- B05B5/0415—Driving means; Parts thereof, e.g. turbine, shaft, bearings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
- B05B5/001—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means incorporating means for heating or cooling, e.g. the material to be sprayed
Definitions
- the invention relates to a rotary coating product projector and to a coating product projection installation comprising such a projector.
- an air turbine to rotate a rotary spraying member most often called "bowl” or "cup”.
- the turbine is driven by the circulation of a pressurized gas, most often air, which by expanding at the fins of the rotor of a turbine drives this rotor in rotation, as well as the member spray he wears.
- the drive air is exhausted to the outside of the projector in an exhaust duct generally oriented towards the rear of the projector, so as not to interfere with the cloud of coating product being projection.
- the drive air sees its temperature drop to reach relatively low values, in particular between 10 ° C and -15 ° C, which is significantly lower than the dew point.
- air usually found in coating spray booths this dew point being close to 12 ° C, for a humidity level of approximately 65% and a temperature of approximately 22 ° C.
- the invention more particularly intends to remedy by proposing a new rotary projector for a coating product in which the risks of condensation near the exhaust duct for the drive gas are very greatly reduced, or even eliminated.
- the invention relates to a rotary sprayer of coating product which comprises a pneumatic turbine capable of driving a rotary spraying member in rotation, this turbine being connected to a supply pipe of pressurized gas for its drive and to at least one exhaust pipe for the drive gas.
- This headlight is characterized in that the exhaust duct has at least two walls, with a first wall situated generally inside a second wall and which defines the volume of flow of the exhaust gas inside of this conduit, while at least one space of non-zero thickness is formed between the external surface of the first wall and the internal surface of the second wall. Thanks to the invention, a gas blade is formed between the two walls of the duct, which allows to thermally isolate the volume inside which the exhaust gas circulates, from the outside of the exhaust duct, thus avoiding the risk of condensation in the vicinity of this conduit.
- a rotary projector can incorporate one or other of the following characteristics taken in any technically admissible combination: -
- the first wall is formed by a sleeve which extends over substantially the entire length of the duct , inside of it.
- the aforementioned space is isolated from the outside and filled with a quantity of gas which forms a layer of thermal insulation between the sleeve and the material defining the conduit.
- the aforementioned space is supplied with gas and connected to a gas outlet, so that a gas circulation can take place in this space. In this case, this space can be supplied with a pressure higher than that of the exhaust gas, while at least one channel connects this space to the volume of flow of exhaust gas defined by the first wall.
- the aforementioned channel is formed in an upstream part of the first wall.
- the aforementioned space can be fluidly isolated from the flow volume of the exhaust gas.
- the gas for supplying the aforementioned space can be chosen from the drive gas, the bearing gas from the turbine or the gas from a device for measuring the speed of rotation of the turbine, in particular a measuring device with microphone.
- the first wall is made of a material which is weakly conductive from a thermal and / or electrical point of view, in particular a synthetic material, preferably a material of light color which limits the heat transfers by radiation.
- the invention also relates to a coating product projection installation which comprises at least one projector as described above. Such a installation is easier to install and more economical to operate than known installations.
- FIG. 1 is a partial section in principle of a projector according to a first embodiment of the invention
- - Figure 1A is an enlarged view of detail A in Figure 1
- - Figure 2 is a top view on a smaller scale of the projector of Figure 1 for viewing its laying plane on the wrist of a multi-axis robot, there is shown by line II the cutting plane of Figure 1
- - Figure 3 is a longitudinal section on a larger scale of the insulation sleeve used in the projector of Figures 1 and 2
- - Figure 4 is a section similar to Figure 1, but on a smaller scale, of a projector according to a second embodiment of the invention.
- the projector 1 shown in Figures 1 and 2 comprises a body 2 made of insulating plastic and in which is formed a reservoir 3 of coating product.
- the body 2 is intended to be mounted on the wrist of a multi-axis robot, not shown, this in accordance with the technical teaching of EP-A-0 274 322.
- the body 2 could be provided to be mounted on a roof machine beam, on a reciprocator or on any type of robot allowing it to be moved in relation to objects to be coated.
- On the body 2, and opposite its laying plane 4 is mounted an air turbine 5 shown in external view only and which is intended to drive in rotation about an axis XX 'a bowl 6 for spraying liquid coating product coming from the reservoir 3.
- a conduit 11 passes through the body 2 right through, that is to say from the laying plane 4 to the level of the turbine 5, and makes it possible to convey to it ci the drive air used to rotate its rotor not shown.
- the arrows F ⁇ in FIG. 1 represent the flow of the drive air in the direction of the turbine 5.
- a second duct 12 is provided for the exhaust air of the turbine and extends from the proximity of that here to the laying plane 4, the arrows P ⁇ 2 representing the flow of the exhaust air in the duct 12.
- the duct 12 is equipped with a sleeve or a jacket 13 more particularly visible at the Figure 3 and which is made of weakly conductive plastic, even insulating, thermally and electrically. In the example shown, it is white polyethylene terephthalate. This sleeve 13 extends over most of the length of the conduit 12 and is provided, in the vicinity of each of its ends, with an extra thickness
- the conduit 12 is double-walled or double-skinned: the sleeve 13 forms its internal wall or skin, while the surface 12a and the material of the body 2 form its external wall or skin.
- a tap 14 is drilled in the body 2 and connects the conduit 11 to the space E.
- a bore 138 is formed in the extra thickness 132 which is intended to be placed in the part of the conduit 12 closest to the turbine. 5, that is to say in the upstream part of this conduit.
- the relative pressure P i2 in the conduit 12 is of the order of a few hundred millibars.
- the relative supply pressure u prevailing in the conduit 11 is of the order of 5 to 6 bars. Due to this pressure difference, part of the turbine drive air flows through the nozzle 14, as shown by the arrows F ⁇ 4 to the interior of the annular space E.
- the air flows in the space E, as represented by the arrows F E , then through the bore 138, as represented by the arrow F ⁇ 38 , up to the interior of the internal volume V i3 of the sleeve 13 in which the exhaust air flows.
- the air flow in space E is, in practice, negligible compared to the flow in duct 11.
- the creation of the air gap in space E is not detrimental to the proper functioning of the turbine 5.
- an air circulation blade is created in the space E, which makes it possible to thermally isolate the volume V ⁇ 3 from the material of the body 2 which forms the second wall of the duct. 12.
- the air passing through the space E and which comes from the duct 11 supplying the turbine enters the space E by an inlet nozzle 16 and leaves by an outlet nozzle 17 which joins the conduit 11, which makes it possible to use the air having passed through space E to supply the turbine.
- This embodiment is more economical than the previous one, insofar as the air used to form the insulating strip between the facing surfaces 13a and 12a of the sleeve 13 and of the conduit 12 is not lost but can be re -used.
- This embodiment is however less effective than the previous one as regards the action on the temperature of the exhaust gases insofar as, in the first embodiment, the air coming from space E and which is mixture with the exhaust gas has a higher temperature than the gas leaving the turbine, which allows a relative rise in temperature of the gas mixture passing through the volume V 13 .
- an adjustable valve for example by a needle screw, so as to adjust the air flow rate in the duct 11 and, consequently, in the tapping 16 and space E. This makes it possible to adapt the flow in space E to the operating conditions.
- the flow in the duct 11 can be adjusted to a zero value. According to a variant not shown of the invention, all the flow of drive air passes through the space E.
- the duct 11 is eliminated between the taps 16 and 17.
- This variant ensures a flow significant in volume E independently of the pressure drops in its supply and discharge conduits.
- the space E defined between the sleeve 13 and the surface 12a can be isolated from the outside, that is to say not be supplied with air from a duct connected to the turbine, which has the advantage of great simplicity.
- the insulation effect obtained is less effective than in the first two embodiments shown.
- the invention is also applicable to the case where the walls defining the space E are not of circular and parallel sections, in which case this space is not annular. In practice, this space can have any shape adapted to its function.
- the space E can also be divided, according to its length or according to its section, into several parts connected fluidly or independently.
- the space E defined between the sleeve 13 and the internal surface 12a of the duct allows the creation of an insulation air gap compatible with a temperature gradient between the internal volume V i3 of the sleeve and the material constituting the duct 12.
- the invention is not limited to projectors equipped with gas bearing turbines but also applies to projectors equipped with turbines with ball or roller bearings.
- the invention has been shown with an exhaust duct made in a solid body 1. However, it applies to an exhaust duct formed by a tube placed inside a thin-walled envelope.
- this tube can be lined from the inside, from the outside or from the inside and the outside at the same time, in which case two substantially concentric volumes of the type of volume E are created, each of these can be supplied with gas to form an insulating strip.
- the supply of these volumes can be common or independent.
- the invention has been shown with the annular space E supplied with air. It is however applicable with a space E supplied with another gas, in particular in the case where such another gas is used to supply the turbine.
- the invention is applicable to electrostatic headlights and so-called pneumatic headlights, that is to say in which electrostatic phenomena are not used to facilitate the transport of droplets of coating product to the object to be coated.
Landscapes
- Electrostatic Spraying Apparatus (AREA)
- Nozzles (AREA)
- Spray Control Apparatus (AREA)
- Paints Or Removers (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BRPI0415507-6A BRPI0415507A (pt) | 2003-10-20 | 2004-10-19 | aspersor rotativo de produto de revestimento e instalação de aspersão de produto de revestimento |
DE602004015132T DE602004015132D1 (de) | 2003-10-20 | 2004-10-19 | Abgasleitung für eine rotierende spritzvorrichtung mit einer druckluftturbine |
KR1020067007469A KR101113921B1 (ko) | 2003-10-20 | 2004-10-19 | 공기터빈을 가진 로터리 살포기를 위한 배출라인 |
EP04805238A EP1675687B1 (fr) | 2003-10-20 | 2004-10-19 | Conduit d'echappement d'un projecteur rotatif a turbine pneumatique |
JP2006534806A JP4695090B2 (ja) | 2003-10-20 | 2004-10-19 | 空気圧タービンを有する回転噴霧器の排気導管 |
US10/576,323 US7325751B2 (en) | 2003-10-20 | 2004-10-19 | Exhaust duct for a rotary sprayer having a pneumatic turbine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0312243 | 2003-10-20 | ||
FR0312243A FR2860996B1 (fr) | 2003-10-20 | 2003-10-20 | Projecteur rotatif de produit de revetement et installation de projection de produit de revetement comprenant un tel projecteur |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005039782A1 true WO2005039782A1 (fr) | 2005-05-06 |
Family
ID=34385304
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2004/002674 WO2005039782A1 (fr) | 2003-10-20 | 2004-10-19 | Conduit d’echappement d’un projecteur rotatif a turbine pneumatique |
Country Status (11)
Country | Link |
---|---|
US (1) | US7325751B2 (fr) |
EP (1) | EP1675687B1 (fr) |
JP (1) | JP4695090B2 (fr) |
KR (1) | KR101113921B1 (fr) |
CN (1) | CN100453185C (fr) |
AT (1) | ATE401130T1 (fr) |
BR (1) | BRPI0415507A (fr) |
DE (1) | DE602004015132D1 (fr) |
ES (1) | ES2310767T3 (fr) |
FR (1) | FR2860996B1 (fr) |
WO (1) | WO2005039782A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006129407A1 (fr) | 2005-06-02 | 2006-12-07 | Abb K.K. | Machine d’enduction de type à tête d’atomisation rotative |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2860996B1 (fr) * | 2003-10-20 | 2005-12-16 | Sames Technologies | Projecteur rotatif de produit de revetement et installation de projection de produit de revetement comprenant un tel projecteur |
FR2906162A1 (fr) * | 2006-09-25 | 2008-03-28 | Sames Technologies Soc Par Act | Projecteur de produit de revetment et installation de projection de produit de revetement comprenant un tel projecteur |
US10576482B2 (en) * | 2016-02-12 | 2020-03-03 | Honda Motor Co., Ltd. | Coating device |
TWI611712B (zh) * | 2017-01-04 | 2018-01-11 | 財團法人工業技術研究院 | 標的物追蹤系統與方法 |
FR3123812A1 (fr) * | 2021-06-15 | 2022-12-16 | Exel Industries | Pulvérisateur rotatif de produit de revêtement et procédé de contrôle d’une température de surface d’un tel pulvérisateur |
CN114484657A (zh) * | 2022-01-28 | 2022-05-13 | 唐德顺 | 一种改善人居环境的多场景模拟调节系统 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2336181A1 (fr) * | 1975-12-26 | 1977-07-22 | Marchand Bernard | Moteur pneumatique pour appareil d'application de peinture par procede electrostatique a tete atomisante rotative a grande vitesse |
US5133499A (en) * | 1987-03-23 | 1992-07-28 | Behr Industrieanlagen Gmbh & Co. | Rotary atomizer with turbine motor |
EP0780159A1 (fr) * | 1995-12-19 | 1997-06-25 | Toyota Jidosha Kabushiki Kaisha | Appareil rotatif de pulvérisation électrostatique |
JPH09262509A (ja) * | 1996-03-29 | 1997-10-07 | Trinity Ind Corp | 多色静電塗装機 |
Family Cites Families (20)
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US4275838A (en) * | 1977-09-12 | 1981-06-30 | Ransburg Corporation | Rotating atomizing device |
US4528687A (en) * | 1981-10-22 | 1985-07-09 | Nissan Motor Company, Limited | Spoken-instruction controlled system for an automotive vehicle |
JPS5949861A (ja) * | 1982-09-13 | 1984-03-22 | Nippon Ranzubaagu Kk | 回転噴霧装置 |
JPS6014959A (ja) * | 1983-07-04 | 1985-01-25 | Nippon Ranzubaagu Kk | 静電噴霧装置 |
US4589597A (en) * | 1983-10-03 | 1986-05-20 | Graco Inc. | Rotary atomizer spray painting device |
US4580597A (en) * | 1985-04-15 | 1986-04-08 | Monsanto Company | Fluid distribution system |
US4887770A (en) * | 1986-04-18 | 1989-12-19 | Nordson Corporation | Electrostatic rotary atomizing liquid spray coating apparatus |
US4997130A (en) * | 1986-06-26 | 1991-03-05 | Illinois Tool Works, Inc. | Air bearing rotary atomizer |
JP2573437B2 (ja) * | 1991-06-28 | 1997-01-22 | 川崎製鉄株式会社 | 高炉ガスエネルギー回収設備の運転方法 |
FR2698564B1 (fr) * | 1992-12-01 | 1995-03-03 | Sames Sa | Dispositif de projection de produit de revêtement à élément rotatif de pulvérisation et outil pour le montage et le démontage d'un tel élément rotatif. |
JPH0672649U (ja) * | 1993-03-31 | 1994-10-11 | 日新製鋼株式会社 | 静電塗布装置 |
JP3319649B2 (ja) * | 1994-03-14 | 2002-09-03 | エービービー株式会社 | 塗装機 |
KR100265890B1 (ko) * | 1996-12-03 | 2000-09-15 | 라붸 린도베르 | 회전무화 헤드형 도장장치 |
US6328224B1 (en) * | 1997-02-05 | 2001-12-11 | Illinois Tool Works Inc. | Replaceable liner for powder coating apparatus |
US7055768B1 (en) * | 1997-05-23 | 2006-06-06 | John David Stratton | Rotary device for transmission of material in particulate form |
JPH11350974A (ja) * | 1998-06-10 | 1999-12-21 | Hitachi Ltd | 加圧流動床複合発電プラント |
JP3440864B2 (ja) * | 1999-02-19 | 2003-08-25 | マックス株式会社 | エアホースソケット |
JP4189106B2 (ja) * | 1999-11-15 | 2008-12-03 | 本田技研工業株式会社 | 回転霧化式塗装装置 |
DE10239517A1 (de) * | 2002-08-28 | 2004-03-11 | Dürr Systems GmbH | Beschichtungseinrichtung mit einem Rotationszerstäuber und Verfahren zum Steuern ihres Betriebes |
FR2860996B1 (fr) * | 2003-10-20 | 2005-12-16 | Sames Technologies | Projecteur rotatif de produit de revetement et installation de projection de produit de revetement comprenant un tel projecteur |
-
2003
- 2003-10-20 FR FR0312243A patent/FR2860996B1/fr not_active Expired - Fee Related
-
2004
- 2004-10-19 DE DE602004015132T patent/DE602004015132D1/de not_active Expired - Lifetime
- 2004-10-19 JP JP2006534806A patent/JP4695090B2/ja not_active Expired - Fee Related
- 2004-10-19 US US10/576,323 patent/US7325751B2/en active Active
- 2004-10-19 CN CNB200480030813XA patent/CN100453185C/zh not_active Expired - Fee Related
- 2004-10-19 KR KR1020067007469A patent/KR101113921B1/ko not_active IP Right Cessation
- 2004-10-19 AT AT04805238T patent/ATE401130T1/de not_active IP Right Cessation
- 2004-10-19 BR BRPI0415507-6A patent/BRPI0415507A/pt not_active Application Discontinuation
- 2004-10-19 EP EP04805238A patent/EP1675687B1/fr not_active Expired - Lifetime
- 2004-10-19 ES ES04805238T patent/ES2310767T3/es not_active Expired - Lifetime
- 2004-10-19 WO PCT/FR2004/002674 patent/WO2005039782A1/fr active IP Right Grant
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2336181A1 (fr) * | 1975-12-26 | 1977-07-22 | Marchand Bernard | Moteur pneumatique pour appareil d'application de peinture par procede electrostatique a tete atomisante rotative a grande vitesse |
US5133499A (en) * | 1987-03-23 | 1992-07-28 | Behr Industrieanlagen Gmbh & Co. | Rotary atomizer with turbine motor |
EP0780159A1 (fr) * | 1995-12-19 | 1997-06-25 | Toyota Jidosha Kabushiki Kaisha | Appareil rotatif de pulvérisation électrostatique |
JPH09262509A (ja) * | 1996-03-29 | 1997-10-07 | Trinity Ind Corp | 多色静電塗装機 |
Non-Patent Citations (1)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 1998, no. 02 30 January 1998 (1998-01-30) * |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006129407A1 (fr) | 2005-06-02 | 2006-12-07 | Abb K.K. | Machine d’enduction de type à tête d’atomisation rotative |
EP1886734A1 (fr) * | 2005-06-02 | 2008-02-13 | Abb K.K. | Machine d enduction de type à tête d atomisation rotative |
JPWO2006129407A1 (ja) * | 2005-06-02 | 2008-12-25 | Abb株式会社 | 回転霧化頭型塗装機 |
EP1886734A4 (fr) * | 2005-06-02 | 2010-04-14 | Abb Kk | Machine d enduction de type à tête d atomisation rotative |
JP4705100B2 (ja) * | 2005-06-02 | 2011-06-22 | Abb株式会社 | 回転霧化頭型塗装機 |
Also Published As
Publication number | Publication date |
---|---|
ES2310767T3 (es) | 2009-01-16 |
CN1871072A (zh) | 2006-11-29 |
EP1675687B1 (fr) | 2008-07-16 |
US7325751B2 (en) | 2008-02-05 |
FR2860996B1 (fr) | 2005-12-16 |
FR2860996A1 (fr) | 2005-04-22 |
BRPI0415507A (pt) | 2006-12-12 |
US20070029405A1 (en) | 2007-02-08 |
JP2007508924A (ja) | 2007-04-12 |
CN100453185C (zh) | 2009-01-21 |
EP1675687A1 (fr) | 2006-07-05 |
ATE401130T1 (de) | 2008-08-15 |
KR101113921B1 (ko) | 2012-04-17 |
KR20070005916A (ko) | 2007-01-10 |
JP4695090B2 (ja) | 2011-06-08 |
DE602004015132D1 (de) | 2008-08-28 |
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