EP3949684A1 - Tapis chauffant déformable et conformable - Google Patents
Tapis chauffant déformable et conformableInfo
- Publication number
- EP3949684A1 EP3949684A1 EP20726220.5A EP20726220A EP3949684A1 EP 3949684 A1 EP3949684 A1 EP 3949684A1 EP 20726220 A EP20726220 A EP 20726220A EP 3949684 A1 EP3949684 A1 EP 3949684A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heating
- mat
- matrix
- heating element
- heating mat
- 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.)
- Granted
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 82
- 239000011159 matrix material Substances 0.000 claims abstract description 29
- 239000013013 elastic material Substances 0.000 claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 239000004809 Teflon Substances 0.000 claims description 7
- 229920006362 Teflon® Polymers 0.000 claims description 7
- 238000003780 insertion Methods 0.000 claims description 7
- 230000037431 insertion Effects 0.000 claims description 7
- 230000008021 deposition Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 238000004073 vulcanization Methods 0.000 claims description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract 1
- 229910052710 silicon Inorganic materials 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
- 229920001296 polysiloxane Polymers 0.000 description 15
- 238000000151 deposition Methods 0.000 description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- -1 polytetrafluoroethylene Polymers 0.000 description 3
- 239000004743 Polypropylene Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 229920001155 polypropylene Polymers 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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
- H05B3/00—Ohmic-resistance heating
- H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
- H05B3/34—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater flexible, e.g. heating nets or webs
-
- 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
- H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
- H05B2203/002—Heaters using a particular layout for the resistive material or resistive elements
-
- 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
- H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
- H05B2203/002—Heaters using a particular layout for the resistive material or resistive elements
- H05B2203/004—Heaters using a particular layout for the resistive material or resistive elements using zigzag layout
-
- 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
- H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
- H05B2203/014—Heaters using resistive wires or cables not provided for in H05B3/54
-
- 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
- H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
- H05B2203/017—Manufacturing methods or apparatus for heaters
Definitions
- the present invention relates to the field of heating devices and in particular to deformable and conformable heating mats, intended to allow a supply of heat to mechanical parts, in particular during the production thereof.
- the present invention also relates to a method of manufacturing such a heating mat.
- Heating mats are conventionally controlled by a heating unit making it possible in particular to manage the different heating cycles, in particular: the rate of temperature rise, the level temperature (generally maximum 200 ° C), the duration of the level as well as the rate of temperature drop.
- these heating mats consist of a matrix of elastic material (for example silicone) through which heating resistors circulate in the form of resistive filaments connected by a wire to the management unit.
- elastic material for example silicone
- the present applicant has therefore set himself the objective in particular of presenting a heating mat making it possible to manufacture / finish a part made of composite material having a complex shape and / or outline and / or comprising at least one angle and / or or an edge without risking damage to said heating mat.
- a heating mat comprising a matrix of elastic material, said matrix being traversed by at least one heating element connected to a power source,
- the mat has at least one cavity passing right through the die, said cavity being intended to accommodate the heating element
- each heating element is able to move within said at least one cavity
- Each heating element has a zigzag or spiral shape.
- the invention also takes into account one or more of the following characteristics, taken alone or in combination:
- each heating element is heat treated
- each heating element is curved
- At least one heating element is a resistive filament
- the mat is elastically deformable at an angle of the order of 90 ° without compromising the proper functioning of the at least one resistive filament
- the heating mat can extend at least twice its length in all directions without compromising the proper functioning of the at least one resistive filament
- the elastic material is, for example, a silicone
- the mat comprises several cavities and each receiving a heating element.
- the invention also relates to a method of manufacturing a heating mat made of an elastic material matrix comprising the following steps:
- the process can also include one or more of the following steps:
- each heating element is heat treated before insertion into at least one protection forming the wall of the tube
- each heating element is bent before insertion into the at least one protection forming the wall of the tube
- At least one protection forming the wall of the tube is made of Teflon ® .
- FIG. 1 is a perspective view of a heating mat according to the invention
- FIG. 2 is a schematic sectional view of a heating mat according to the invention.
- Figure 1 shows a heating mat 10 according to the invention.
- the heating mat 10 conventionally has dimensions of 10 cm by 10 cm. up to 60 by 60cm.
- the heating mat 10 can also be rectangular or circular in shape with dimensions of up to 60 cm in side or in diameter.
- each heating mat 10 is connected to an electrical power source 12, more particularly to a heating cycle management unit 12 presenting the usual possibilities of management units already present on the market, as described in the introduction. . It can be seen from FIG. 1 that the heating mat 10 is flexible and can be folded at various angles. The heating mat 10 can also be stretched.
- the heating mat 10 has an inhomogeneous internal structure. Indeed, it can be seen that the heating mat 10 has a matrix 14 made of elastic material, for example silicone, in which at least one cavity 16 is provided and which passes right through the matrix 14. Silicone has, depending on its vulcanization temperature, certain particular and specific properties.
- each cavity 16 thus extends from a first edge B1 of the heating mat 10 to an opposite edge B2 of said heating mat. Between the edges B1 and B2, the cavity 16 changes direction several times, so as to present a non-linear path, preferably rounded or undulating. It can be seen in FIG. 2 that each cavity 16 has, alternately, four curvatures between the edges B1 and B2.
- each cavity 16 undulates in a three-dimensional space within the heating mat 10.
- Each cavity 16 has a circular section of 3 to 5 mm in diameter so as to form a kind of tube. It has a wall 17 made of Teflon ® (polytetrafluoroethylene - PTFE), or any other material allowing the two sheets of silicone does not adhere to one another, such as high temperature polypropylene. It also has an undulating pattern and is separated from its two neighboring cavities 16 by a layer of at least 3 mm of matrix 14. Each cavity 16 can have a single pattern. Each cavity 16 is sufficiently wide to accommodate a heating element 18. In the case illustrated in FIG. 2, it is a resistive filament 18. Each cavity 16 is thus sufficiently wide to allow movement, without risk of damage. within said cavity 16, the resistive filament 18 received. The resistive filaments 18 are connected to the management unit 12. This control unit management 12 conventionally sends temperature setpoints in the form of electrical signals through resistive filaments 18.
- each resistive filament 18 is bent: it has a zigzag or spiral shape (of the corkscrew type). Each resistive filament 18 can thus move and stretch within the cavity 16, allowing a greater possibility of adaptation and positioning when the heating mat 10 is stretched and / or folded.
- Each resistive filament 18 has a non-rectilinear path within the cavity (16).
- the risk of breaking one of the resistive filaments 18 is thus reduced compared to a conventional heating mat structure in which the filaments are inserted in a straight and linear manner within the silicone matrix 14.
- the resistive filaments 18 can, for example be composed of nickel (Ni) and chromium (Cr).
- each resistive filament 18 is also heat treated after bending in order to further reduce their risk of breakage.
- the heat treatment typically consists of heating to 1200 ° C for 5 to 6 hours.
- This treatment of the resistive filaments 18 makes it possible to bring the characteristics of deformation and elasticity of the heating mat 10 closer to those of a matrix 14 of pure silicone.
- the heating mat 10 is elastically deformable at an angle of 90 ° without compromising the proper functioning of the resistive filaments 18.
- the heating mat 10 according to the invention can extend at least twice its length in all directions without compromising the correct operation of the resistive filaments 18.
- correct operation of the filaments 18 is meant the absence breakage or damage no longer allowing the temperature setpoints from the management unit to be conveyed without hindrance.
- the heating mat 10 is thus conformable to any type of part / contour and deformable to a sufficient extent to allow its use in connection with parts of complex shapes / contours, such as parts of turbomachines (for example flanges, housings, etc. blades, etc ).
- the heating mat 10 is manufactured according to a process which has five steps:
- Teflon ® protection form the wall 17 of a corrugated tube
- the resistive filaments 18 are locked in the cavities 16, protected in all directions by the walls of Teflon ® 17 and the layers of the matrix 14 of silicone layers which now form one heating mat 10 uni.
- vulcanization is meant a heat treatment above 200 ° C. over a few tens of minutes. This step adapts depending on the types of silicone used to create the matrix 14.
- the heating mat according to the invention 10 is more flexible and more extensible and it is, therefore, easier to apply it to complex shapes / contours including in particular edges.
- the resistive filaments 18 are no longer the fuses of the system: the heating mat 10 can be extended in all three dimensions and within the elastic limits of the silicone.
- the possibilities of use are widely extended and all the processes for using a material requiring a supply of heat can benefit from this technical improvement.
- a conformable and deformable heating mat 10 makes it possible in particular to dispense with an autoclave or an oven in certain cases: composite lamination, gluing, preheating before welding or brazing, expansion of a part. before tight or crimped assembly.
Landscapes
- Surface Heating Bodies (AREA)
- Mattresses And Other Support Structures For Chairs And Beds (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1903212A FR3094609B1 (fr) | 2019-03-28 | 2019-03-28 | TApis chauffant dÉformable et conformable |
PCT/FR2020/050569 WO2020193915A1 (fr) | 2019-03-28 | 2020-03-16 | Tapis chauffant déformable et conformable |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3949684A1 true EP3949684A1 (fr) | 2022-02-09 |
EP3949684B1 EP3949684B1 (fr) | 2024-02-21 |
Family
ID=67742625
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20726220.5A Active EP3949684B1 (fr) | 2019-03-28 | 2020-03-16 | Tapis chauffant déformable et conformable |
Country Status (6)
Country | Link |
---|---|
US (1) | US20220201805A1 (fr) |
EP (1) | EP3949684B1 (fr) |
CN (1) | CN113597816A (fr) |
CA (1) | CA3134067A1 (fr) |
FR (1) | FR3094609B1 (fr) |
WO (1) | WO2020193915A1 (fr) |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1031119A (fr) * | 1950-01-19 | 1953-06-19 | Brenneisen & Cie H | élément chauffant souple |
SE465509B (sv) * | 1988-03-04 | 1991-09-23 | Scandmec Mecania Ab | Foerfarande vid tillverkning av ett eluppvaermt fordonssaete samt eluppvaermt fordonssaete |
DE20318041U1 (de) * | 2003-11-12 | 2004-02-19 | Rieber Gmbh & Co. Kg | Heizelement |
DE202004003677U1 (de) * | 2004-03-08 | 2005-08-11 | W.E.T. Automotive Systems Ag | Elektrischer Leiter sowie elektrisches Leiterelement |
KR100880735B1 (ko) * | 2006-04-17 | 2009-02-02 | 주식회사 솔고 바이오메디칼 | 온도 자동 조절 케이블의 굴곡 방법 및 과열 방지 온열매트 |
CN201182844Y (zh) * | 2007-10-11 | 2009-01-21 | 为思有限公司 | 一种改进型电热垫 |
DE202008009579U1 (de) * | 2008-07-16 | 2008-10-30 | Greulich, Lothar | Heizeinrichtung |
EP2329069B1 (fr) * | 2008-07-22 | 2011-11-30 | NV Bekaert SA | Fil pour chauffage de siège de voiture comprenant un lubrifiant approprié |
DE202011003742U1 (de) * | 2011-03-09 | 2011-05-26 | Liu, Lin-Ho, Taipei | Wärme abgebende Matte |
CN202206567U (zh) * | 2011-08-25 | 2012-04-25 | 桐乡市爱贝斯电暖科技有限公司 | 复合型加热垫 |
KR20130081452A (ko) * | 2012-01-09 | 2013-07-17 | 최홍현 | 보온 전기 열선 장치 |
CN202728023U (zh) * | 2012-07-13 | 2013-02-13 | 廊坊市金色时光科技发展有限公司 | 一种座椅加热垫体 |
KR101659688B1 (ko) * | 2015-05-14 | 2016-09-23 | 이형곤 | 온열매트 |
CN205468674U (zh) * | 2016-03-11 | 2016-08-17 | 廊坊金色时光科技发展有限公司 | 一种具有中空覆盖式沟槽的座椅加热装置 |
-
2019
- 2019-03-28 FR FR1903212A patent/FR3094609B1/fr active Active
-
2020
- 2020-03-16 CN CN202080023102.9A patent/CN113597816A/zh active Pending
- 2020-03-16 WO PCT/FR2020/050569 patent/WO2020193915A1/fr unknown
- 2020-03-16 EP EP20726220.5A patent/EP3949684B1/fr active Active
- 2020-03-16 US US17/441,871 patent/US20220201805A1/en active Pending
- 2020-03-16 CA CA3134067A patent/CA3134067A1/fr active Pending
Also Published As
Publication number | Publication date |
---|---|
EP3949684B1 (fr) | 2024-02-21 |
FR3094609A1 (fr) | 2020-10-02 |
US20220201805A1 (en) | 2022-06-23 |
WO2020193915A1 (fr) | 2020-10-01 |
CN113597816A (zh) | 2021-11-02 |
FR3094609B1 (fr) | 2021-04-09 |
CA3134067A1 (fr) | 2020-10-01 |
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