WO2009105945A1 - Fer à repasser électrique - Google Patents

Fer à repasser électrique Download PDF

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Publication number
WO2009105945A1
WO2009105945A1 PCT/CN2008/071262 CN2008071262W WO2009105945A1 WO 2009105945 A1 WO2009105945 A1 WO 2009105945A1 CN 2008071262 W CN2008071262 W CN 2008071262W WO 2009105945 A1 WO2009105945 A1 WO 2009105945A1
Authority
WO
WIPO (PCT)
Prior art keywords
electric iron
soleplate
conductive coating
layer conductive
heating element
Prior art date
Application number
PCT/CN2008/071262
Other languages
English (en)
Inventor
Wing Yiu Yeung
Keith Torpy
Original Assignee
Advanced Materials Enterprises Co., Ltd.
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 Advanced Materials Enterprises Co., Ltd. filed Critical Advanced Materials Enterprises Co., Ltd.
Publication of WO2009105945A1 publication Critical patent/WO2009105945A1/fr

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
    • H05B3/00—Ohmic-resistance heating
    • H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
    • H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
    • H05B3/141—Conductive ceramics, e.g. metal oxides, metal carbides, barium titanate, ferrites, zirconia, vitrous compounds
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F75/00—Hand irons
    • D06F75/08—Hand irons internally heated by electricity
    • D06F75/24—Arrangements of the heating means within the iron; Arrangements for distributing, conducting or storing the heat
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F75/00—Hand irons
    • D06F75/38—Sole plates
    • 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
    • H05B2203/009—Heaters using conductive material in contact with opposing surfaces of the resistive element or resistive layer
    • H05B2203/01—Heaters comprising a particular structure with multiple layers

Definitions

  • the present patent application relates to an electric iron. More particularly, the present application relates to an electric iron having at least a heating element with a multi-layer conductive coating of nano-thickness and electrodes.
  • the soleplate of a conventional electric iron is usually heated by an electric resistance heater which is mounted inside a housing.
  • the resistance heater includes one or more wire-like resistors which can be connected to an electric power source whereby the resistors generate heat to heat up the soleplate.
  • the resistance heater is installed on the soleplate.
  • Such electric iron is rather complicated in construction. The cost of manufacturing and assembly of the electric resistance heater is rather high, especially since it has to be mounted on a support made of an electrically insulating material.
  • a conventional soleplate can be made of a single piece of metal such as aluminum or steel.
  • An advantage of aluminum is that its heat conductivity is quite satisfactory and that it is relatively light in weight.
  • a soleplate which is made of steel is more resistant to wear and scratching. However, it is rather heavy in weight and its thermal conductivity is not satisfactory.
  • Another kind of soleplate is formed of two pieces made of different materials. There is a core portion which is electrically heatable and is made of aluminum. It carries a thin-walled base plate of steel which comes in actual contact with the clothing to be ironed. This kind of soleplate is complicated in structure and increases the cost of the soleplate and of the entire iron.
  • An electric iron includes a soleplate and at least a heating element.
  • the heating element includes at least one multilayer conductive coating of nano-thickness disposed on the soleplate.
  • the heating element further includes electrodes disposed on the multi-layer conductive coating.
  • the multi-layer conductive coating has a structure and composition which stabilize performance of the heating element at high temperatures.
  • the electric iron can perform heating and ironing functions using alternating current electrical power, direct current electrical power, solar energy power, or one or more batteries.
  • the electric iron includes a power charger or power converter.
  • the electric iron is cordless.
  • the electric iron includes a plurality of heating elements electrically connected one another in parallel.
  • the electric iron includes a plurality of heating elements electrically connected one another in series.
  • the electric iron includes a plurality of heating elements electrically connected one another, and the multi-layer conductive coatings of the heating elements are constructed in a same size.
  • the electric iron includes a plurality of heating elements electrically connected one another, and the multi-layer conductive coatings of the heating elements are constructed in different sizes.
  • the electric iron includes a plurality of heating elements electrically connected one another, and the multi-layer conductive coatings of the heating elements are constructed in same characteristics.
  • the electric iron includes a plurality of heating elements electrically connected one another, and the multi-layer conductive coatings of the heating elements are constructed in different characteristics.
  • the multi-layer conductive coating of the heating element has a size of about 30mm to about 150 mm in length and about 10mm to about 80mm in width. In one embodiment, the electrical resistance of the multi-layer conductive coating of the heating element is about 5 ohms to about 50 ohms.
  • the soleplate is made of ceramic glass.
  • the electric iron includes a protective layer disposed over the electrodes and the conductive coating, and the electrodes and the conductive coating are sandwiched between the protective layer and the soleplate.
  • the protective layer is made of ceramic glass or other insulating materials.
  • a multi-layer insulating coating of nano-thickness is disposed between the multi-layer conductive coating and the soleplate.
  • the multi-layer conductive coating of the heating element may be produced by spray pyrolysis.
  • the spray pyrolysis can be carried out at a temperature of about 650 0 C to about 75O 0 C.
  • the spray pyrolysis can be carried out at a spray pressure of about 0.4 MPa to about 0.7 MPa.
  • the spray pyrolysis can be carried out at a spray head speed of less than 1000 mm per second.
  • the spray pyrolysis can be carried out by alternating spray passes in a direction of about 90 degrees to each other.
  • the heating element includes a multi-layer insulating coating of nano-thickness disposed between the multi-layer conductive coating and the soleplate.
  • the multi-layer insulating coating may include sol- gel derived silicon dioxide.
  • Figure 1 is a perspective view of an electric iron according to an embodiment of the present application.
  • Figure 2 is a side view of the electric iron
  • Figure 3 is a top plan view of the electric iron
  • Figure 4 is a bottom plan view of the electric iron
  • Figure 5 is a rear end view of the electric iron
  • Figure 6 is a partial top plan view of soleplate of an electric iron with a heating element according to an embodiment of the present application;
  • Figure 7 is a cross sectional view of the heating element of Figure 6;
  • Figure 8 is a top plan view of a soleplate of the electric iron with two heating elements electrically connected in parallel according to an embodiment of present application;
  • Figure 9 is a top plan view of a soleplate of the electric iron with two heating elements electrically connected in series according to another embodiment of present application.
  • Figure 10 is a top plan view of a soleplate of the electric iron with five heating elements electrically connected in parallel according to a further embodiment of present application.
  • Figure 11 is a top plan view of a soleplate of the electric iron with five heating elements electrically connected in series according to a further embodiment of present application.
  • a multi-layer coating or "a multi-layered coating” refers to a coating having more than one layer of a coating material.
  • nano-thickness refers to a thickness of each coating layer only measurable in nanometer at the nanometer level.
  • FIG 1 is a perspective view of an electric iron 10 according to an embodiment of the present patent application.
  • the electric iron 10 includes a soleplate 12, a housing 14, a handle 16, and a temperature control knob 18.
  • the soleplate 12 can be in the form of a plate having a uniform thickness which leads to uniform distribution of heat throughout the soleplate 12.
  • the soleplate 12 may have a thickness of about 4 mm.
  • the soleplate 12 has a top surface 30 and a bottom ironing surface 32.
  • the soleplate 12 and the ironing surface 32 can generally be boat-shaped as in a conventional electric iron.
  • the soleplate 12 has a front tip portion 34, a middle portion 36, and a rear end portion 38. It is to be understood that the soleplate 12 can be in the form of a plate having a non-uniform thickness. It is also to be understood that the thickness of the soleplate 12 may be greater than 4 mm or less than 4mm. It is further to be understood that the soleplate 12 and the ironing surface 32 can be other shapes.
  • the housing 14 is connected to the front tip portion 34 of the soleplate 12, leaving the middle portion 36 and the rear end portion 38 exposed to the surrounding air and at a distance from the housing 14 and the handle 16.
  • This allows the heat generated by the soleplate 12 to be dissipated into the surrounding air rather than towards the housing 14 and the handle 16.
  • This can prevent the electronic components, such as a printed circuit board, inside the housing 14 or the handle 16 from being damaged by heat when the electric iron 10 is in operation.
  • This also facilitates fast air cooling of the soleplate 12 when ironing is finished and the heating element is turned off.
  • the soleplate 12 can be detachably connected to the housing 14 for easy maintenance and repair of the mechanical and electronic parts inside the housing 14.
  • FIG 2 is a side view of the electric iron 10. As best illustrated in Figure 2, the housing 14 is connected to the front tip portion 34 of the soleplate 12, and the lower surface 20 of the handle 16 is substantially parallel to and spaced apart from the middle and rear end portions 36, 38 of the soleplate 12.
  • the housing 14 is attached to the front tip portion 34 of the soleplate 12
  • the housing 14 can be attached to the middle portion 36 and/or the rear end portion 38 of the soleplate 12.
  • the housing 14 can be attached to the rear end portion 38 of the soleplate 12, leaving the front tip portion 34 and the middle portion 36 exposed to air.
  • This handle can also be modified into other forms in different shapes.
  • the lower section 20 of the handle 16 can be removed but with the handle 16 extended above the rear end of the soleplate.
  • FIG. 3 is a top plan view of the electric iron 10 showing the temperature control knob 18.
  • the temperature control knob 18 is used to vary the temperature of the soleplate 12 by means of an electric circuit provided inside the housing 14 or the handle 16.
  • An indicator such as a light emitting diode (LED) may be provided on the housing 14 or the handle 16 to indicate the ON/OFF condition of the electric iron 10. Additional indicators may be used to indicate other additional conditions of the electric iron 10 if desired.
  • LED light emitting diode
  • Figure 4 is a bottom plan view of the electric iron 10 showing the conventional boat-shaped soleplate 12.
  • the soleplate 12 may have a length of about 200 mm and a width of about 100 mm.
  • the soleplate 12 may be made of ceramic glass or any other suitable material. It is understood by one skilled in the art that ceramic glass can survive high temperature and thermal shock, and is often selected over other materials in providing consistent and reliable high temperature heating functions. Furthermore, ceramic glass is highly resistant to wear and scratching of metal buttons and zippers of clothing to be ironed. The ceramic glass can also contain a hard and smooth surface to provide more effective ironing on clothing.
  • Figure 5 is a rear end view of the electric iron. As illustrated in Figure 5, an electrical socket 26 may be provided at a rear end 22 of the handle 16. The plug of a power supply cord can be plugged into the electrical socket 26 for the supply of alternating current electrical power to the electric iron 10. Different forms of power supply and connection can also be used.
  • the alternating current electrical power can be used to heat up the soleplate, or be converted into direct current electrical power through a power charger or converter stand to heat up the soleplate, or be used to charge up rechargeable batteries accommodated in the electric iron or in a charger stand where the electric iron stands or sits on.
  • a compartment 28 may be formed inside the handle 16 or the housing 14 for the accommodation of a rechargeable or non-chargeable battery or batteries to provide direct current electrical power to the electric iron 10.
  • the rear end portion 38 of the soleplate 12 and the rear end 22 of the handle 16 can define a heel rest whereby the electric iron 10 can stand with the soleplate 12 in an upright position when the electric iron 10 is temporarily not in use or placed on a power charger or converter.
  • This handle can also be modified into other forms for these purposes and for different requirements.
  • Figure 6 is a partial top plan view of soleplate of an electric iron having a heating element 40 according to an embodiment of the present application.
  • Figure 7 is a cross sectional view of the heating element 40 of Figure 6.
  • the heating element 40 includes a multi-layer insulating coating 44 disposed on the soleplate 12, a multi-layer conductive coating 46 disposed on the multi-layer insulating coating 44, and electrodes 48 disposed on the multi-layer conductive coating 46.
  • the multi-layer insulating coating 44 is not used, and the multi -layer conductive coating 46 is directly disposed on the soleplate 12.
  • a protective layer 50 can be disposed over the insulating coating 44, the conductive coating 46, and the electrodes 48.
  • the protective layer 50 serves as a cover to protect the otherwise exposed insulating coating 44, conductive coating 46, and electrodes 48.
  • the protective layer 50 may cover the entire area of the soleplate 12 such that the insulating coating 44, the conductive coating 46, and the electrodes 48 are sandwiched between the protective layer 50 and the soleplate 12.
  • the protective layer 50 may be made of the same material as the soleplate 12. That means the protective layer 50 may be made of ceramic glass or other suitable material. Alternatively, the protective layer 50 may be made of an insulating material.
  • the multi-layer insulating coating 44 is disposed on a surface of the ceramic glass soleplate 12.
  • the multi -layer insulating coating 44 may be made of sol-gel derived silicon dioxide (SiO 2 ), or other suitable material.
  • Each layer of the multi-layer insulating coating 44 has a nano-thickness of about 30 nm to about 50 nm.
  • the multi-layer insulating coating 44 can be applied on the surface of the ceramic glass soleplate 12 with a surfactant to ensure 100% wetting of the SiO 2 coating on the ceramic glass soleplate 12 to prevent defect sites, to electrically isolate the conductive coating 46 from the ceramic glass soleplate 12 (which may become conductive at high temperature), and to prevent diffusion of lithium ions and other contaminant elements migrating from the ceramic glass soleplate 12 into the conductive coating 46 during heating process.
  • Perfluoralkyl surfactant of a concentration between about 0.01 and about 0.001% w/w may be used with sodium dioctyl sulphosuccinate of a concentration between about 0.1 and about 0.01% w/w applied on the ceramic glass soleplate 12 using spraying, or dip coating technique, or other suitable techniques.
  • SiO 2 layers can be deposited on the ceramic glass soleplate 12 using dip coating, or other suitable techniques, and using Tetra Ethoxy Ortho Silicate (TEOS) as the base precursor.
  • TEOS Tetra Ethoxy Ortho Silicate
  • Each sol-gel silica layer needs to be hydrolysed, dried and fired at about 500 0 C using a staged ramp up temperature cycle essentially to remove physical water, chemically bound water and carbon and organic residues from the matrix, resulting in ultra pure SiO 2 layers with minimum defects.
  • the multi-layer conductive coating 46 is disposed on the insulating coating 44.
  • the multi-layer conductive coating 46 may also be directly disposed on the soleplate 12.
  • the multi-layer conductive coating 46 may be an oxide coating using a source metal selected from the group consisting of tin, indium, cadmium, tungsten, titanium and vanadium with organometallic precursors like Monobutyl Tin Tri-chloride doped with equal quantities of donor and acceptor elements such as antimony and zinc at about 3 mol% with or without other rare earth elements. It is understood that the multi-layer conductive coating 46 can be made of other suitable materials.
  • the multi-layer conductive coating 46 may be deposited over the insulating coating 44 or the soleplate 12 using spray pyrolysis with controlled temperature between about 65O 0 C to about 75O 0 C at a spray pressure of about 0.4 to about 0.7 MPa, in formation of a multi-layered nano-thickness coating of about 50 to about 70 nm each layer in thickness to ensure uniform distribution of the rare earth materials within the coating leading to increased stability at high temperatures.
  • the controlled spray movement is in alternating spray passes in the direction of about 90° to each other.
  • the speed of spray head is restricted to below 1000 mm per second.
  • the conductive coating material in the multi-layer conductive coating 46 is used to convert electric power into heat energy.
  • the applied heat generation principle is quite different from that of a conventional electric iron in which heating outputs come from a high electrical resistance of metal coils at low heating efficiency and high power loss.
  • electrical resistance of the coating can be controlled and conductivity can be increased to generate high heating efficiency with minimal energy loss.
  • two electrodes 48 are formed on the conductive coating 46 along two opposite sides of the conductive coating 46, respectively.
  • the two electrodes 48 may be made of glass ceramic frit based ink, with a source metal selected from the group consisting of platinum, gold, silver, palladium and copper (90 - 95%), and glass frit (5 - 10%) made of PbO, SiO 2i CeO 2 and Li 2 O added with an organic vehicle of ethyl cellulose/ethanol.
  • the ink may be screen printed over the conductive coating area with optimum matching between the electrodes 48, the coating 44, 46 and the ceramic glass soleplate 12 in providing consistent conductivity across the coating area.
  • the ink may be screen printed and baked at about 700 0 C for about 5 minutes to form the electrodes 48 on the conductive coating 46. This can prevent potential delamination of the electrodes 48 from the coating 44, 46 and the soleplate 12. No prolonged high temperature annealing is required to settle the coatings and electrodes.
  • the insulating coating 44 may not be required to be disposed on the surface of the ceramic glass soleplate 12. Instead, a temperature monitor and control system can be integrated with the conductive coating 46 for optimum temperature and energy saving control.
  • the heating element 40 of the electric iron 10 can be manufactured by an inexpensive deposition method in open air environment via spray pyrolysis.
  • application of controlled multi-spray passes in forming of the multi-layer conductive coating can minimize the application of cerium and lanthanum to an amount below the required 2.5 mol%, and maintain the stability of the conductive coating in performing heating functions.
  • Spray head movement conditions can be established and the speed is restricted to below 1000 mm per second.
  • spray parameters can affect the characteristics of the heating element, and optimum conditions can be established.
  • Table 1 shows variation of the effective resistances and power ratings of the heating element produced by 2, 6, 10 and 12 spray passes, at a spray head movement speed of about 750 mms "1 and at a spray pressure of about 0.5 MPa.
  • the multi-layered nano-thickness coating system disclosed in the present application has the characteristics that the coating material can be deposited by a low-cost spraying process in an open-air environment.
  • This multi-layered nano-thickness coating system renders a heating element of an electric iron to maintain a stable structure and high conductivity, and hence results in consistent electrical resistance and heating performance at high temperature even for a prolonged period.
  • an optimum atomization of the spraying material solution and deposition on the soleplate surface are required by a specific selection of the composition and properties of the coating material of the base and doped elements, the process conditions of the spray pyrolysis covering the soleplate surface, including temperature, movement of the spraying head, nozzle design, and spray pressure.
  • the multi-layer coatings of nano-thickness with high conductivity can enhance the coating stability and minimize the risk of formation of cracks.
  • the coating system of the present application is capable of integration with alternating current electrical power supply, direct current electrical power supply and/or solar energy system for heat generating functions.
  • Conventional heating elements of electric irons are often of high electrical resistance, electrical current is hence low under direct current electrical power and incapable of generating sufficient energy uniformly over an area for heating. Improvement of conductivity and reduction of electrical resistance of the heating films, through controlled spray process, to 10 ohms or below can be achieved. It is capable of generating sufficient energy over an area to perform practical heating and ironing functions using direct current electrical power supply and/or be integrated with solar energy power supply.
  • the heating element described in this application is able to reach a temperature of 15O 0 C in less than 2 minutes.
  • the direct current electrical power supply or solar energy power supply can be provided in form of rechargeable or non- rechargeable batteries, or through a power charger or converter inside the electric iron, or through a power charger or converter stand where the electric iron stands or sits on. In these cases, the electric iron can be with a power supply cord or can be cordless.
  • a plurality of heating elements may be provided on the soleplate of the electric iron. These heating elements may be electrically connected in parallel or in series.
  • the conductive coatings of the heating elements may be constructed in same characteristics (e.g., structure, composition, thickness, etc.) but in different sizes, such that different densities of power output (Watt/cm ) and different ironing temperatures can be achieved across the soleplate.
  • the conductive coatings of the heating elements may also be constructed in same characteristics and in same size, such that same density of power output and same ironing temperature can be achieved across the soleplate. Further, the conductive coatings of the heating elements may be constructed in different characteristics and in different sizes, but same density of power output and same ironing temperature can be achieved across the soleplate.
  • the heating elements can be constructed in sizes of about 10mm about 80mm in width, about 30mm about 150mm in length with electrical resistances ranging about 5ohms about 50 ohms.
  • Figure 8 is a top plan view of a soleplate 112 of an electric iron with a first heating element 140 and a second heating element 160 electrically connected in parallel by two electrodes 148, 150.
  • the first heating element 140 includes a multi-layer conductive coating 141 disposed on the soleplate 112.
  • the first heating element 140 also includes two electrodes 148, 150 disposed on the multi-layer conductive coating 141.
  • the second heating element 160 includes a multi-layer conductive coating 142 disposed on the soleplate 112.
  • the second heating element 160 also includes two electrodes 148, 150 disposed on the multi-layer conductive coating 142.
  • the first heating element 140 has a coating area which is smaller than that of the second heating element 160.
  • the characteristics (e.g., structure, composition, thickness, etc.) of the conductive coatings of the two heating elements 140, 160 are same, higher density of power output (Watt/cm ) and higher ironing temperature can be achieved at the first heating element 140.
  • the tip portion of the soleplate has a high ironing temperature
  • the body portion of the soleplate has a lower ironing temperature.
  • the conductive coatings of the two heating elements 140, 160 are adjusted to reach a same density of power output, same ironing temperature can be achieved at the two heating elements. As a result, a uniform temperature can be generated across the soleplate 112.
  • Figure 9 is a top plan view of a soleplate 212 of an electric iron with a first heating element 240 and a second heating element 260 electrically connected in series by an electrode 252.
  • the first heating element 240 includes a multi-layer conductive coating 241 disposed on the soleplate 212.
  • the first heating element 240 also includes two electrodes 248, 252 disposed on the multi-layer conductive coating 241.
  • the second heating element 260 includes a multi-layer conductive coating 242 disposed on the soleplate 212.
  • the second heating element 260 also includes two electrodes 250, 252 disposed on the multi-layer conductive coating 242.
  • the first heating element 240 has a coating area which is smaller than that of the second heating element 260.
  • the characteristics (e.g., structure, composition, thickness, etc.) of the conductive coatings of the two heating elements 140, 160 are the same, higher density of power output (Watt/cm ) and higher ironing temperature can be achieved at the first heating element 240.
  • the tip portion of the soleplate has a higher ironing temperature
  • the body portion of the soleplate has a lower ironing temperature.
  • the conductive coatings of the two heating elements 240, 260 are adjusted to reach a same density of power output, same ironing temperature can be achieved at the two heating elements. As a result, a uniform temperature can be generated across the soleplate 212.
  • Figure 10 is a top plan view of a soleplate 312 of an electric iron with five heating elements 340, 360, 364, 366, 368 electrically connected in parallel by two electrodes 348, 350.
  • the first heating element 340 includes a multi-layer conductive coating 341 disposed on the soleplate 312.
  • the first heating element 340 also includes two electrodes 348, 350 disposed on the multi-layer conductive coating 341.
  • the second heating element 360 includes a multilayer conductive coating 342 disposed on the soleplate 312.
  • the second heating element 360 also includes two electrodes 348, 350 disposed on the multi-layer conductive coating 342.
  • the third heating element 364 includes a multi-layer conductive coating 343 disposed on the soleplate 312.
  • the third heating element 364 also includes two electrodes 348, 350 disposed on the multi-layer conductive coating 343.
  • the fourth heating element 366 includes a multi-layer conductive coating 344 disposed on the soleplate 312.
  • the fourth heating element 366 also includes two electrodes 348, 350 disposed on the multi-layer conductive coating 344.
  • the fifth heating element 368 includes a multi-layer conductive coating 345 disposed on the soleplate 312.
  • the fifth heating element 368 also includes two electrodes 348, 350 disposed on the multi-layer conductive coating 345.
  • the conductive coatings of the five heating elements have the same size.
  • the characteristics (e.g., structure, composition, thickness, etc.) of the conductive coatings of the five heating elements are the same, same density of power output and same ironing temperature can be achieved at the five heating elements. As a result, a uniform temperature can be generated across the soleplate 312.
  • Figure 11 is a top plan view of a soleplate 412 of an electric iron with five heating elements 440, 460, 464, 466, 468 electrically connected in series.
  • the first heating element 440 includes a multi-layer conductive coating 441 disposed on the soleplate 412.
  • the first heating element 440 also includes two electrodes 448, 450 disposed on the multi-layer conductive coating 441.
  • the second heating element 460 includes a multi -layer conductive coating 442 disposed on the soleplate 412.
  • the second heating element 460 also includes two electrodes 450, 454 disposed on the multi-layer conductive coating 442.
  • the third heating element 464 includes a multi-layer conductive coating 443 disposed on the soleplate 412.
  • the third heating element 464 also includes two electrodes 452, 454 disposed on the multi-layer conductive coating 443.
  • the fourth heating element 466 includes a multi-layer conductive coating 444 disposed on the soleplate 412.
  • the fourth heating element 466 also includes two electrodes 452, 456 disposed on the multi-layer conductive coating 444.
  • the fifth heating element 468 includes a multi-layer conductive coating 445 disposed on the soleplate 412.
  • the fifth heating element 468 also includes two electrodes 456, 458 disposed on the multi-layer conductive coating 445.
  • the conductive coatings of the five heating elements have the same size.
  • the characteristics (e.g., structure, composition, thickness, etc.) of the conductive coatings of the five heating elements are the same, same density of power output and same ironing temperature can be achieved at the five heating elements. As a result, a uniform temperature can be generated across the soleplate 412.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Resistance Heating (AREA)
  • Irons (AREA)

Abstract

L'invention porte sur un fer à repasser électrique qui comprend une semelle et au moins un élément chauffant. L'élément chauffant comprend un revêtement conducteur multicouche d'épaisseur nanométrique disposé sur la semelle. L'élément chauffant comprend en outre des électrodes disposées sur le revêtement conducteur multicouche. Le revêtement conducteur multicouche a une structure et une composition qui stabilisent la performance de l'élément chauffant à des températures élevées. La semelle peut être réalisée en verre céramique. Le fer à repasser électrique peut effectuer des fonctions de chauffage et de repassage en utilisant le courant électrique alternatif, le courant électrique continu, le courant provenant de l'énergie solaire ou une ou plusieurs batteries.
PCT/CN2008/071262 2008-02-28 2008-06-11 Fer à repasser électrique WO2009105945A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200820006417 2008-02-28
CN200820006417.9 2008-02-28

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Publication Number Publication Date
WO2009105945A1 true WO2009105945A1 (fr) 2009-09-03

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PCT/CN2008/071262 WO2009105945A1 (fr) 2008-02-28 2008-06-11 Fer à repasser électrique

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CN (1) CN201214725Y (fr)
WO (1) WO2009105945A1 (fr)

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WO2011045577A1 (fr) * 2009-10-16 2011-04-21 Logicor Limited Fer à repasser et son procédé d'utilisation
EP3222770A1 (fr) * 2016-03-21 2017-09-27 Koninklijke Philips N.V. Plaque de traitement pour appareil de traitement de vêtements
US10119222B2 (en) 2015-10-29 2018-11-06 Koninklijke Philips N.V. Coated ironing plate and method of forming a coated ironing plate

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GB2479803B8 (en) * 2010-11-17 2013-10-23 Richards Morphy N I Ltd Iron sole plate
CN102433725B (zh) * 2011-09-09 2013-07-10 俞钟晓 一种太阳能熨斗
CN105986461B (zh) * 2015-02-11 2019-05-28 佛山市顺德区美的电热电器制造有限公司 熨烫头和衣物护理机
WO2019056162A1 (fr) * 2017-09-19 2019-03-28 唐锋机电科技（深圳）有限公司 Film chauffant électrique et fer électrique
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