WO1998017519A1 - Deicing device - Google Patents
Deicing device Download PDFInfo
- Publication number
- WO1998017519A1 WO1998017519A1 PCT/SE1996/001365 SE9601365W WO9817519A1 WO 1998017519 A1 WO1998017519 A1 WO 1998017519A1 SE 9601365 W SE9601365 W SE 9601365W WO 9817519 A1 WO9817519 A1 WO 9817519A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- outer layer
- layer
- ice
- inner layer
- snow
- Prior art date
Links
- 239000000463 material Substances 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000009825 accumulation Methods 0.000 claims abstract description 5
- 238000000576 coating method Methods 0.000 claims abstract description 5
- 239000011248 coating agent Substances 0.000 claims abstract description 4
- -1 for example Polymers 0.000 claims description 3
- 239000004417 polycarbonate Substances 0.000 claims description 3
- 229920000515 polycarbonate Polymers 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 2
- 230000002209 hydrophobic effect Effects 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 239000011148 porous material Substances 0.000 claims 1
- 229920005992 thermoplastic resin Polymers 0.000 claims 1
- 239000010410 layer Substances 0.000 description 37
- 239000002344 surface layer Substances 0.000 description 4
- 238000007789 sealing Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000001846 repelling effect Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/18—Materials not provided for elsewhere for application to surfaces to minimize adherence of ice, mist or water thereto; Thawing or antifreeze materials for application to surfaces
- C09K3/185—Thawing materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
- B61F5/50—Other details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D15/00—De-icing or preventing icing on exterior surfaces of aircraft
- B64D15/16—De-icing or preventing icing on exterior surfaces of aircraft by mechanical means
Definitions
- the invention relates to a device for repelling ice and snow on surfaces in vehicles which are used in winter environment and for preventing such surfaces from being coated with ice or snow.
- the methods which are currently used for dealing with the above-mentioned problems mainly comprise:
- Deicing of coated surfaces may only be performed at certain locations and certain parts of the surfaces which must not be covered with ice. For a deicing operation to be successful, it is further required that all ice be removed, since the remaining ice otherwise constitutes an excellent base for a new layer of ice. This implies that deicing is time- consuming and must take place sometimes as frequent intervals . Various methods for deicing are known and will not be described here.
- One example of a known deicing method is the device disclosed in the patent document GB 549,400, where a surface in the form of the leading edge of an aircraft wing is coated with an inflatable shoe.
- the task of this shoe is to prevent ice from accumulating in that the shoe is made as an elastic body of rubber or a rubber-like material to break up and loosen accumulated ice in that the elastic surfaces of the body can be stretched when the body is caused to expand by inflating a hose built into the body, whereupon the ice is removed by the airflow.
- this device does not prevent the actual formation of ice but only attempts to solve the problem of removing ice which has already accumulated on these stretchable surfaces.
- this method requires an active measure in that the body is caused to become stretched or deformed by means of a facility, in this case by expansion via the inflatable hose.
- patent document EP 646 524 Al shows a deicing device of a similar kind, in which a deicing element is in the form of an elastic layer, which in this example is made of poly- urethane .
- the function of this ice-repelling layer is the same as in the device of the above-mentioned GB document, that is, that the elastic properties of the layer are employed to utilize stresses which arise between accumulated ice and the elastic layer lying under the ice, where the elastic layer cooperates with an associated active deicing element which uses heat, pneumatics or an electromagnetic device to actively contribute to deicing of the intended surface by supplying heat to the ice-repelling layer, or by deformations via expansion or vibration thereof.
- an elastic and stretchable surface is used in conjunction with an active element for achieving the deicing device .
- the invention relates to a method and a device for preventing the accumulation of snow or ice on an external surface of a vehicle element, wherein the method comprises coating the surface with at least two layers, of which the outer layer is formed as an even, stiff and smooth surface, whereas the inner layer is in the form of a heat-insulating, elastic layer.
- the outer and inner layers must be used together in order to achieve the intended effect
- - constitute a surface which is difficult to cover by snow, whereby the choice of material and the design thereof are of great importance, - have considerably greater stiffness than the underlying insulating layer to provide great stresses in any accumulated ice when being loaded, for example caused by wind forces or vibrations, such that the ice is broken loose from the surface, and to - transport away any remaining snow or ice.
- All surfaces should be inclined towards the horizontal plane, which implies that the surface of the outer layer, or part-surfaces thereof, when coating, for example, a horizon- tal surface of a frame member in a bogie is given a downward inclination.
- the material in the outer layer mentioned should have a high stiffness and possess toughness (especially impact toughness at low temperatures) . Further, this material should exhibit a low wettability (i.e. be hydrophobic), a low coefficient of thermal conductivity (k- value) , a low thermal capacity (c) , and, as mentioned above, an even and smooth surface .
- the task of the insulating inner layer is to
- the heat-insulating properties of the inner layer are important for the function of the device.
- a utilization of a heat-insulating, elastic layer in cooperation with a stiff but locally deformable thin layer, applied outside the first layer, to achieve the intended effect without actively acting means is not known from the prior art.
- An important advantage of the invention is that no actively operating constituent which constitutes a component in a deicing device need be utilized.
- an element in a vehicle has been mentioned here.
- the object of the invention may, of course, be used also for deicing statio- nary or other movable structural members, for example, in accordance with the principle described above, for deicing beams in bridges, masts and other structures.
- the figure schematically illustrates, in a vehicle, a structural part, the external surface of which has been coated with the outer and inner layers according to the invention, described above.
- FIG. 1 An example of an embodiment of the invention is shown in the figure, in which a structural member, which constitutes part of a vehicle, which in the example shown may be in the form of a box girder for a bogie, has been coated with the snow- and ice-repelling outer and inner layers 1 and 2.
- the mentioned snow- and ice-repelling outer and inner layers 1 and 2 are applied onto an upper plane surface 4 and side surfaces 5 of the external surfaces of the box girder 3.
- the outer layer 1 exhibits the properties mentioned above, whereby the figure also illustrates that the outer layer 1 is formed to exhibit a inclination towards the horizontal plane, which means that the upper plane surface of the outer layer 1 in the example is formed with a roof-like geometry.
- the inner layer 2 consists of an insulation between the surface of the vehicle element 3 and the outer layer 1.
- a porous polyethylene in the inner layer 2 and polycarbonate plastic in the outer layer 1 are mentioned.
- the thickness of the inner layer 2 is chosen in a preferred optimized variant to be 5 mm, whereas the outer layer 1 is given the thickness 2 mm in a preferred combination. Depending on the application, the area of the surface to be de- iced, etc., other optimized material and thickness combinations may be preferable.
- the material in the surface according to the invention should not be rubber-elastic but stiff, which implies that the external surface in the deicing device according to the invention differs from what is the intention of the outer surface according to the known devices described.
- the stiffness of the outer layer 1 has a preferred stiffness as described in the table, but materials with stiffnesses in the interval 1000-10,000 MPa may be used.
- the ideal value of the E-modulus of the outer layer is 25% of the E-modulus of the ice, which amounts to 10,000 MPa, which implies that a material with a preferred E-modulus of around 2500 MPa may be used.
- Polycarbonate with an E-modulus amounting to 2200 MPa is a suitable such material for use in the outer layer 1.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Aviation & Aerospace Engineering (AREA)
- Combustion & Propulsion (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP96941239A EP0932540B1 (en) | 1996-10-24 | 1996-10-24 | Deicing device |
DE69623661T DE69623661T2 (en) | 1996-10-24 | 1996-10-24 | DEFROSTED DEVICE |
PCT/SE1996/001365 WO1998017519A1 (en) | 1995-08-22 | 1996-10-24 | Deicing device |
NO19991842A NO310451B1 (en) | 1996-10-24 | 1999-04-16 | De-icing device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9502901A SE509588C2 (en) | 1995-08-22 | 1995-08-22 | Preventing snow or ice building up on e.g. train bogies, ship masts or bridge girders |
PCT/SE1996/001365 WO1998017519A1 (en) | 1995-08-22 | 1996-10-24 | Deicing device |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998017519A1 true WO1998017519A1 (en) | 1998-04-30 |
Family
ID=26662365
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/SE1996/001365 WO1998017519A1 (en) | 1995-08-22 | 1996-10-24 | Deicing device |
Country Status (1)
Country | Link |
---|---|
WO (1) | WO1998017519A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001062593A1 (en) * | 2000-02-22 | 2001-08-30 | Ab Sorbera | Device for an aeroplane |
WO2011138317A1 (en) * | 2010-05-04 | 2011-11-10 | Siemens Aktiengesellschaft | Bogie for a railway vehicle |
CN102639382A (en) * | 2010-01-20 | 2012-08-15 | Db远程交通股份公司 | Rail vehicle for a driving operation on track systems having a ballasted superstructure |
NO20161469A1 (en) * | 2016-09-15 | 2018-03-16 | Kulyakhtin As | Setting, insulating, anti sea spray icing coating and a marine structure coated with a setting, insulating anti sea spray icing coating |
WO2018203367A1 (en) * | 2017-05-01 | 2018-11-08 | 川崎重工業株式会社 | Railway vehicle bogie provided with protective film and leaf spring provided with protective film |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB549400A (en) * | 1940-08-03 | 1942-11-19 | Goodrich Co B F | Apparatus for preventing the accumulation of ice |
FR950406A (en) * | 1946-01-30 | 1949-09-27 | Goodrich Co B F | Improvements to inflatable devices for aircraft surfaces |
SE464413B (en) * | 1988-04-27 | 1991-04-22 | Procoat Innovation Ab | The use of a hardenable product composition for counteracting the formation of ice on surfaces |
WO1992008767A1 (en) * | 1990-11-15 | 1992-05-29 | Skega Ab | Ice-preventive covering |
EP0646524A1 (en) * | 1993-10-01 | 1995-04-05 | The B.F. Goodrich Company | Polyurethane deicer |
-
1996
- 1996-10-24 WO PCT/SE1996/001365 patent/WO1998017519A1/en active IP Right Grant
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB549400A (en) * | 1940-08-03 | 1942-11-19 | Goodrich Co B F | Apparatus for preventing the accumulation of ice |
FR950406A (en) * | 1946-01-30 | 1949-09-27 | Goodrich Co B F | Improvements to inflatable devices for aircraft surfaces |
SE464413B (en) * | 1988-04-27 | 1991-04-22 | Procoat Innovation Ab | The use of a hardenable product composition for counteracting the formation of ice on surfaces |
WO1992008767A1 (en) * | 1990-11-15 | 1992-05-29 | Skega Ab | Ice-preventive covering |
EP0646524A1 (en) * | 1993-10-01 | 1995-04-05 | The B.F. Goodrich Company | Polyurethane deicer |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2001062593A1 (en) * | 2000-02-22 | 2001-08-30 | Ab Sorbera | Device for an aeroplane |
CN102639382A (en) * | 2010-01-20 | 2012-08-15 | Db远程交通股份公司 | Rail vehicle for a driving operation on track systems having a ballasted superstructure |
WO2011138317A1 (en) * | 2010-05-04 | 2011-11-10 | Siemens Aktiengesellschaft | Bogie for a railway vehicle |
CN102883935A (en) * | 2010-05-04 | 2013-01-16 | 西门子公司 | Bogie for a railway vehicle |
NO20161469A1 (en) * | 2016-09-15 | 2018-03-16 | Kulyakhtin As | Setting, insulating, anti sea spray icing coating and a marine structure coated with a setting, insulating anti sea spray icing coating |
WO2018052309A1 (en) * | 2016-09-15 | 2018-03-22 | Kulyakhtin As | Setting, insulating, anti sea spray icing coating and a marine structure coated with a setting, insulating anti sea spray icing coating |
WO2018203367A1 (en) * | 2017-05-01 | 2018-11-08 | 川崎重工業株式会社 | Railway vehicle bogie provided with protective film and leaf spring provided with protective film |
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