WO1998034435A1 - Applicateur de micro-ondes, et son application a la scarification superficielle du beton contamine - Google Patents
Applicateur de micro-ondes, et son application a la scarification superficielle du beton contamine Download PDFInfo
- Publication number
- WO1998034435A1 WO1998034435A1 PCT/FR1998/000165 FR9800165W WO9834435A1 WO 1998034435 A1 WO1998034435 A1 WO 1998034435A1 FR 9800165 W FR9800165 W FR 9800165W WO 9834435 A1 WO9834435 A1 WO 9834435A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- microwaves
- waveguide
- envelope
- microwave applicator
- reflecting
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
- H05B6/70—Feed lines
- H05B6/701—Feed lines using microwave applicators
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
- H05B6/70—Feed lines
- H05B6/707—Feed lines using waveguides
- H05B6/708—Feed lines using waveguides in particular slotted waveguides
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
- H05B6/76—Prevention of microwave leakage, e.g. door sealings
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S588/00—Hazardous or toxic waste destruction or containment
- Y10S588/90—Apparatus
Definitions
- the invention relates to a microwave applicator and to its application to the surface scarification of contaminated concrete.
- the third relates to a hemispherical application head from which the microwaves exit through slots in an arc. Satisfactory focusing is achieved with these systems, but a different one is desired for the concrete peel technique, since these application heads with a large opening area can be easily damaged by dust and debris detached from the scarified concrete. . It is also noted that the large openings imply a loss of efficiency because the share of microwaves reflected by the concrete towards the outside, and which are therefore lost, is greater.
- the essential object of the invention is therefore an applicator having a head consisting of an envelope provided with a microwave outlet opening, which makes it possible to focus a microwave beam on a target with good clarity without its structure is complicated n that its opening is important.
- an applicator comprising a waveguide and a head into which this waveguide ends, the head having an opening directed towards a target of the microwaves and essentially comprising an envelope reflecting the microwaves.
- Two main variants are proposed, which present the common original element that the envelope is a surface with a truncated elliptical section and has two focal zones, one of which, located outside the opening, is the focal point of the microwaves. The other of the focal zones is a place of dispersion of the microwaves originating in the waveguide towards the surface of the envelope, where the microwaves are reflected to converge towards the focusing zone.
- the focal dispersion region is occupied by a part reflecting the microwaves and the waveguide is directed towards this part, which may in particular be spherical, cylindrical of revolution or in the form of an angle dihedral. directed to the waveguide.
- this part may in particular be spherical, cylindrical of revolution or in the form of an angle dihedral. directed to the waveguide.
- a diffusion piece provided with multiple slots in which the waveguide ends may be provided.
- the main application envisaged is ⁇ 1 rind of contaminated concrete, but it is not unique and the invention could find use for crushing stones or medicine.
- FIG. 1 represents a general view of the invention
- FIG. 2 represents a first design of the applicator
- FIG. 3 illustrates another view of this design of the applicator
- FIG. 4 illustrates a second design ⁇ e of the applicator
- FIG. 5 illustrates a third design of the applicator
- the apparatus can be mounted on a carriage 1 rolling on the concrete wall 2 to peel; it includes a microwave generator 3, an application head 4, a waveguide 5 connecting the two previous ones, a vacuum cleaner 6, a suction cup 7 surrounding the end of the application head 4, a suction duct 8 opening into the cup 7, and possibly a membrane 9 blocking the opening 10 of the application head 4.
- the microwaves originating from the transmitter 3 circulate through the waveguide 5 and leave the application head 4 through the opening 10, placed directly on the wall 2 or has very little distance from it in order to limit leaks; the optional membrane 9 serves to protect the interior of the application head 4 from dust and debris produced by the crumbling of the concrete, but it is obviously permeable to microwaves.
- the dust and debris rise in the cup 7 and are sucked up by the vacuum cleaner 6.
- the application head 4 is an envelope in the form of a truncated cylinder with elliptical base or ellipsoidal cylm ⁇ re, which comprises two focal areas FI and F2, and that the truncation is such that the second focal zone F2 is situated outside the envelope, under the surface of the concrete wall 2.
- the waveguide 5, which can be in the form of a metallic sheath with rectangular section, has a plane of symmetry which coincides with the plane joining the focal zones FI and F2 of the ellipsoidal cylinder.
- the first area FI located in the envelope, is occupied by a reflector 11, here formed by a metallic cylinder of revolution connected to the application head 4.
- the M waves leave the waveguide 5 parallel to the plane of symmetry of the envelope then are reflected by the reflector 11 towards the surface of the application head 4, which in turn reflects them towards the focal zone F2 whatever their initial path and in particular their point of reflection on the reflector 11: the focusing is almost perfect thanks to the geometric properties of the ellipsoidal cylinder and it is spoiled only by the non-zero diameter of the reflector 11, which prohibits reflection to the first focal area FI itself.
- the second focal zone F2 is actually placed a little deeper in the concrete wall 2 than what is shown, because of the refraction of the waves produced at the separation of air and concrete.
- the air-concrete interface also produces wave reflections in all directions, towards the waveguide 5 and towards the outside in particular.
- the former however, have no damaging effect because the reflector 11 stops most of it and therefore protects the waveguide 5; and the seconds are reduced due to the tight appearance of the opening 10.
- the advantage of a cylinder-shaped envelope with an elliptical base is that it can be given a substantially greater width in the direction transverse to its movement 1, in order to spread the overlap over a greater width of the concrete and scarify it along wider strips.
- the FIG. 3 shows that the focal zones FI and F2 are linear and assume the appearance of segments parallel to the axis of the reflector 11 in an ellipsoidal cylinder, and that the focal zone F2 represents the width of band heated on the concrete.
- the rectangular waveguide 5 has its section whose long side is parallel to the transverse direction to emit the waves over a greater width.
- the cylindrical reflector 11 has the disadvantage of returning part of the radiation, which is practically coincident with the major axis of the ellipse, towards the waveguide 5, which can damage the emitter 3, we can advise to replace it by the dihedral 14 of FIG. 4, composed of two flat facets 15 joining by an angle 16 directed towards the waveguide 5 and opening towards the opening 10.
- the drawback of the dihedral 14 is however that it focuses the radiation less well towards the second focus F2.
- waveguide 5 coaxial with the application head 4 is replaced by a waveguide 20 coaxial with the first focal zone and situated in its extension.
- the waveguide 20 extends inside the envelope in the form of a tube 17 pierces fine radiating slots 18 extending along its length and distributed over a large part of its surface, except towards the opening 10.
- the waves exit from the tube 17 in all directions coming from the first focal point FI. As in previous achievements, they are reflected against the internal surface of the application head 4 towards the second focal zone F2. As the wave path remains the same as above from the first focal area FI, the operation of the device remains the same.
- the ellipsoid of the application head 4 can have a more or less significant transverse dimension: the preceding figures have illustrated the case of application heads 4 wide, with reflector 11, 14 or 17 elongated transversely and with focal zones FI and F2 linear; application heads with symmetry of revolution can also be chosen, the focal zones then being replaced by point focal points; the reflecting piece will be a sphere or a cone which will replace the cylinder 11 or the dihedral 14, and it will be connected to the application head 4 by suspension rods; the representations of FIGS. 2 and 4 then remain valid, all the sections of the application head then having a truncated elliptical section.
- Figures 6 and 7 finally illustrate alternative embodiments of Figures 2 and 4, which are distinguished in that the waveguide 5, instead of flush with the internal surface of the envelope of the application head 4 , comprises an extension 19 which sinks into the chamber surrounded by the application head 4 towards the focal zone FI; the extension stops at a distance advantageously close to a quarter of the wavelength of the microwaves. It has been found that this arrangement gives good focusing results thanks to the longer guiding of the microwaves. It has also been found that it is advantageous for the reflector 11 or 14 to have a overall dimensions roughly equal to a quarter of the wavelength. These values are however approximate and result from empirical tests, so that other good solutions, even better solutions, must exist in particular cases depending in particular on the shape of the reflector.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Constitution Of High-Frequency Heating (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/355,300 US6157013A (en) | 1997-01-31 | 1998-01-29 | Microwave applicator and method for the surface scarification of contaminated concrete |
EP98904246A EP1016324B1 (fr) | 1997-01-31 | 1998-01-29 | Applicateur de micro-ondes, et son application a la scarification superficielle du beton contamine |
JP53258698A JP2001511295A (ja) | 1997-01-31 | 1998-01-29 | 汚染コンクリートの表面を削るためのマイクロ波アプリケータとその適用 |
DE69813262T DE69813262T2 (de) | 1997-01-31 | 1998-01-29 | Mikrowellenapplicator und seine verwendung zum ehtfernen von verseuchten oberfläche von beton |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR97/01102 | 1997-01-31 | ||
FR9701102A FR2759239B1 (fr) | 1997-01-31 | 1997-01-31 | Applicateur de micro-ondes, et son application a la scarification superficielle du beton contamine |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998034435A1 true WO1998034435A1 (fr) | 1998-08-06 |
Family
ID=9503192
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1998/000165 WO1998034435A1 (fr) | 1997-01-31 | 1998-01-29 | Applicateur de micro-ondes, et son application a la scarification superficielle du beton contamine |
Country Status (6)
Country | Link |
---|---|
US (1) | US6157013A (fr) |
EP (1) | EP1016324B1 (fr) |
JP (1) | JP2001511295A (fr) |
DE (1) | DE69813262T2 (fr) |
FR (1) | FR2759239B1 (fr) |
WO (1) | WO1998034435A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001043508A1 (fr) * | 1999-12-07 | 2001-06-14 | Industrial Microwave Systems, Inc. | Reacteur cylindrique a region focale etendue |
JP2002535155A (ja) * | 1999-01-19 | 2002-10-22 | ラモート ユニバーシティ オーソリティ フォー アプライド リサーチ アンド インダストリアル デベロップメント リミテッド | マイクロ波放射を用いて固体不導電性材料を穴あけし、切断し、釘付けし、接合する方法および装置 |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6746425B1 (en) * | 1996-06-14 | 2004-06-08 | Futuremed Interventional | Medical balloon |
FR2812166B1 (fr) | 2000-07-21 | 2002-12-13 | Commissariat Energie Atomique | Applicateur de micro-ondes focalisant |
JP4280166B2 (ja) * | 2002-03-06 | 2009-06-17 | 新日本製鐵株式会社 | 汚染土壌の無害化処理方法及びアプリケーター |
JP5359364B2 (ja) * | 2009-02-25 | 2013-12-04 | セイコーエプソン株式会社 | 光源装置およびプロジェクタ |
DE102009010665A1 (de) | 2009-02-27 | 2010-09-16 | Beiersdorf Ag | Verwendung von geladenen Tensiden zur Verminderung der Textilverfleckung durch Antitranspirantien |
WO2021084748A1 (fr) * | 2019-11-01 | 2021-05-06 | 株式会社アシックス | Procédé de fabrication d'un élément de chaussure, et matrice de moulage |
FR3104383B1 (fr) | 2019-12-11 | 2021-12-03 | Commissariat Energie Atomique | Procédé et appareil de désherbage par rayonnement électromagnétique |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH032595A (ja) * | 1989-05-30 | 1991-01-08 | Science & Tech Agency | マイクロ波照射による放射能汚染コンクリート表層部の剥離除去装置 |
US5003144A (en) * | 1990-04-09 | 1991-03-26 | The United States Of America As Represented By The Secretary Of The Interior | Microwave assisted hard rock cutting |
JPH03148592A (ja) * | 1989-11-06 | 1991-06-25 | Mitsubishi Electric Corp | イメージ加熱装置 |
EP0438179A1 (fr) * | 1990-01-19 | 1991-07-24 | Mitsubishi Denki Kabushiki Kaisha | Appareil pour chauffer une image utilisant une lampe à décharge de plasma par micro-ondes |
US5283010A (en) * | 1990-03-14 | 1994-02-01 | United Kingdom Atomic Energy Authority | Tritium removal |
WO1995000681A1 (fr) * | 1993-06-28 | 1995-01-05 | Abb Atom Ab | Procede de deocontamination |
JPH08304597A (ja) * | 1995-05-12 | 1996-11-22 | Mitsubishi Electric Corp | 放射能汚染コンクリート表層部の除去装置及び除去方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL248916A (fr) * | 1959-05-01 | |||
US5507927A (en) * | 1989-09-07 | 1996-04-16 | Emery Microwave Management Inc. | Method and apparatus for the controlled reduction of organic material |
US5449889A (en) * | 1992-10-30 | 1995-09-12 | E. I. Du Pont De Nemours And Company | Apparatus, system and method for dielectrically heating a medium using microwave energy |
US6013330A (en) * | 1997-02-27 | 2000-01-11 | Acushnet Company | Process of forming a print |
-
1997
- 1997-01-31 FR FR9701102A patent/FR2759239B1/fr not_active Expired - Fee Related
-
1998
- 1998-01-29 US US09/355,300 patent/US6157013A/en not_active Expired - Fee Related
- 1998-01-29 DE DE69813262T patent/DE69813262T2/de not_active Expired - Fee Related
- 1998-01-29 EP EP98904246A patent/EP1016324B1/fr not_active Expired - Lifetime
- 1998-01-29 WO PCT/FR1998/000165 patent/WO1998034435A1/fr active IP Right Grant
- 1998-01-29 JP JP53258698A patent/JP2001511295A/ja active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH032595A (ja) * | 1989-05-30 | 1991-01-08 | Science & Tech Agency | マイクロ波照射による放射能汚染コンクリート表層部の剥離除去装置 |
JPH03148592A (ja) * | 1989-11-06 | 1991-06-25 | Mitsubishi Electric Corp | イメージ加熱装置 |
EP0438179A1 (fr) * | 1990-01-19 | 1991-07-24 | Mitsubishi Denki Kabushiki Kaisha | Appareil pour chauffer une image utilisant une lampe à décharge de plasma par micro-ondes |
US5283010A (en) * | 1990-03-14 | 1994-02-01 | United Kingdom Atomic Energy Authority | Tritium removal |
US5003144A (en) * | 1990-04-09 | 1991-03-26 | The United States Of America As Represented By The Secretary Of The Interior | Microwave assisted hard rock cutting |
WO1995000681A1 (fr) * | 1993-06-28 | 1995-01-05 | Abb Atom Ab | Procede de deocontamination |
JPH08304597A (ja) * | 1995-05-12 | 1996-11-22 | Mitsubishi Electric Corp | 放射能汚染コンクリート表層部の除去装置及び除去方法 |
Non-Patent Citations (3)
Title |
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PATENT ABSTRACTS OF JAPAN vol. 015, no. 107 (P - 1179) 14 March 1991 (1991-03-14) * |
PATENT ABSTRACTS OF JAPAN vol. 015, no. 374 (M - 1160) 20 September 1991 (1991-09-20) * |
PATENT ABSTRACTS OF JAPAN vol. 097, no. 003 31 March 1997 (1997-03-31) * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002535155A (ja) * | 1999-01-19 | 2002-10-22 | ラモート ユニバーシティ オーソリティ フォー アプライド リサーチ アンド インダストリアル デベロップメント リミテッド | マイクロ波放射を用いて固体不導電性材料を穴あけし、切断し、釘付けし、接合する方法および装置 |
WO2001043508A1 (fr) * | 1999-12-07 | 2001-06-14 | Industrial Microwave Systems, Inc. | Reacteur cylindrique a region focale etendue |
US6797929B2 (en) | 1999-12-07 | 2004-09-28 | Industrial Microwave Systems, L.L.C. | Cylindrical reactor with an extended focal region |
Also Published As
Publication number | Publication date |
---|---|
US6157013A (en) | 2000-12-05 |
EP1016324B1 (fr) | 2003-04-09 |
EP1016324A1 (fr) | 2000-07-05 |
DE69813262D1 (de) | 2003-05-15 |
FR2759239A1 (fr) | 1998-08-07 |
FR2759239B1 (fr) | 1999-03-05 |
DE69813262T2 (de) | 2004-02-05 |
JP2001511295A (ja) | 2001-08-07 |
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