GB2470414A - Steam Generator Using Doped Tin Oxide Coated Tube - Google Patents
Steam Generator Using Doped Tin Oxide Coated Tube Download PDFInfo
- Publication number
- GB2470414A GB2470414A GB0908863A GB0908863A GB2470414A GB 2470414 A GB2470414 A GB 2470414A GB 0908863 A GB0908863 A GB 0908863A GB 0908863 A GB0908863 A GB 0908863A GB 2470414 A GB2470414 A GB 2470414A
- Authority
- GB
- United Kingdom
- Prior art keywords
- steam generator
- tube
- steam
- water
- generator according
- 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.)
- Withdrawn
Links
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 title claims abstract description 11
- 229910001887 tin oxide Inorganic materials 0.000 title claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 238000009501 film coating Methods 0.000 claims abstract description 21
- 239000007888 film coating Substances 0.000 claims abstract description 20
- SKRWFPLZQAAQSU-UHFFFAOYSA-N stibanylidynetin;hydrate Chemical compound O.[Sn].[Sb] SKRWFPLZQAAQSU-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000000758 substrate Substances 0.000 claims abstract description 15
- 239000011521 glass Substances 0.000 claims abstract description 11
- 239000000919 ceramic Substances 0.000 claims abstract description 5
- 230000005611 electricity Effects 0.000 claims abstract description 3
- 239000004065 semiconductor Substances 0.000 claims description 24
- 230000007246 mechanism Effects 0.000 claims description 6
- 230000037452 priming Effects 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 44
- 229910052742 iron Inorganic materials 0.000 abstract description 22
- 238000000576 coating method Methods 0.000 abstract description 7
- 239000011248 coating agent Substances 0.000 abstract description 6
- 239000007921 spray Substances 0.000 abstract description 3
- 238000010411 cooking Methods 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 32
- 239000010409 thin film Substances 0.000 description 10
- 239000010408 film Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 3
- 229910010271 silicon carbide Inorganic materials 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 235000000396 iron Nutrition 0.000 description 1
- 229910052743 krypton Inorganic materials 0.000 description 1
- DNNSSWSSYDEUBZ-UHFFFAOYSA-N krypton atom Chemical compound [Kr] DNNSSWSSYDEUBZ-UHFFFAOYSA-N 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910003465 moissanite Inorganic materials 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 229910001120 nichrome Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 230000003678 scratch resistant effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000013020 steam cleaning Methods 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23L—FOODS, FOODSTUFFS, OR NON-ALCOHOLIC BEVERAGES, NOT COVERED BY SUBCLASSES A21D OR A23B-A23J; THEIR PREPARATION OR TREATMENT, e.g. COOKING, MODIFICATION OF NUTRITIVE QUALITIES, PHYSICAL TREATMENT; PRESERVATION OF FOODS OR FOODSTUFFS, IN GENERAL
- A23L5/00—Preparation or treatment of foods or foodstuffs, in general; Food or foodstuffs obtained thereby; Materials therefor
- A23L5/10—General methods of cooking foods, e.g. by roasting or frying
- A23L5/13—General methods of cooking foods, e.g. by roasting or frying using water or steam
-
- A23L1/0121—
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
- A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
- A61L2/04—Heat
- A61L2/06—Hot gas
- A61L2/07—Steam
-
- 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
- D06F39/00—Details of washing machines not specific to a single type of machines covered by groups D06F9/00 - D06F27/00
- D06F39/008—Steam generating arrangements
-
- 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
- D06F75/10—Hand irons internally heated by electricity with means for supplying steam to the article being ironed
- D06F75/14—Hand irons internally heated by electricity with means for supplying steam to the article being ironed the steam being produced from water in a reservoir carried by the iron
- D06F75/18—Hand irons internally heated by electricity with means for supplying steam to the article being ironed the steam being produced from water in a reservoir carried by the iron the water being fed slowly, e.g. drop by drop, from the reservoir to a steam generator
-
- D06F39/40—
Abstract
A steam generator comprises an inner tube 5 and outer tube 4, the inner tube being supplied with water 3 and having conduits 7 for the water to pass to a space 8 between the tubes, the outer tube having a doped tin oxide film coating 4 on its outer wall, electrical connections 2 to the coating enabling electricity to pass through it to heat the water in the space 8 between the tubes to generate steam, the steam being expelled through an output 9. The tubes may have any shaped cross section and the outer tube may be a glass or ceramic substrate. The inner tube may comprise two perforated sub tubes 5, 6 rotatable relative to one another, alignment of holes 7 adjusting the spray. The film may be semi-conducting, e.g. antimony tin oxide (ATO) or fluorine-doped tin oxide, may be transparent and may provide a temperature sensor and switch or rectifier. The generator can be used in a domestic iron, for cooking or in steam cleaners.
Description
Steam Generator
FIELD OF THE INVENTION
The invention relates to steam generators, in particular to steam generators for domestic use.
BACKGROUND TO THE INVENTION
Domestic irons consist of a heated metal sole plate onto which water from a reservoir is dripped to generate steam, which is then emitted through holes in the sole plate. The clothes are then pressed by an action of heat and steam. This method produces a small and varying amount of steam and is really only suitable for small amounts of clothes.
An improvement has been made through the introduction of separate water reservoir and steam generators. In this embodiment, a water tank and steam generator is separate from the iron, which also consists of a heated sole plate. The generated steam is then sent down a pipe to the iron, where a constant stream of steam is then released onto the clothes. This method has the advantage of a large water tank for heavy use and a constant flow of steam. The main disadvantage is that the steam can cool down in the pipe and the system is very inefficient and takes a long time to warm up.
With the latter system, one option would be to pump water up a pipe and generate steam in the iron. However, current nichrome heating technology has a power density limitation, because if the heater becomes too hot, then it will oxidize or burn out. Thus without making the iron much larger and having a dramatic impact on the sole plate temperature, the volume of steam generation is limited. Making the heater separate from the iron allows for a large heater sub-assembly and hence a large rate of steam without the requirement for a large heater power density at the expense of heat up time and efficiency. A further disadvantage of this method is that the steam has to be re-heated at the iron and this can impact on the sole plate temperature at higher flow rates. In particular, if a sole plate with poor thermal conductivity is used, such as glass, then this will become a potentially large problem.
We have therefore appreciated the need for an improved steam generation system for domestic use.
SUMMARY OF THE INVENTION
According to the present invention, there is provided a steam generator comprising: a first tube; a second tube located within a bore of said first tube to define a first space between an inner wall of said first tube and an outer wall of said second tube, said second tube being coupled to a water input and having a plurality of conduits for communicating input water to said first space; a steam output coupled to said first space for expelling generated steam; a film coating of doped tin oxide on an outer wall of said first tube; and electronic connections to said film coating to enable electricity to be passed through said film coating to thereby heat water flowing through said first space to generate steam.
The term "tube" is not intended to be restricted to a circular cross-section. In embodiments, the tube cross-section may instead be elliptical, oval, rectangular, square, triangular, polygonal and the like.
Preferably, said film coating comprises a semi-conducting oxide, more particularly a doped tin oxide, for example antimony tin oxide, fluorine-doped tin oxide or some other substantially transparent conducting doped oxide material. Thus although the use of antimony tin oxide (ATO) film coatings has been found to be especially advantageous due to temperature stability, embodiments of the invention also contemplate substitution of an ATO film coating by a film of a different, electrically conducting material, for example, an alternative substantially transparent conducting oxide film, preferably a tin oxide film, for example Indium Tin Oxide, or a mixture of doped oxides.
Use of a high thermal conductivity material or substrate for the tubes facilitates a relatively low temperature for the heated ATO films, for example less than 2OOC.
In embodiments the ATO film coatings are substantially covalently bonded to their substrates, which reduces the risk of lift-off or delamination from the substrate. This can be achieved by cleaning and passivation of the substrate surfaces on which the ATO coatings are deposited. In embodiments the ATO film coatings are substantially.
The use of an antimony tin oxide film also provides other advantages since, in embodiments, such films are scratch resistant, oxidation resistant, substantially chemically inert and does not burn out at high temperatures.
In preferred embodiments, the first tube comprises a glass substrate. Alternatively, the first tube comprises a ceramic substrate.
In some embodiments, the second tube comprises a first sub-tube located within the bore of a second sub-tube to define a second space between an outer wall of said first sub-tube and an inner wall of said second sub-tube, and wherein said first and second sub-tubes comprise a plurality of conduits for communicating input water to said first and second spaces. Preferably, the first and second sub-tubes are rotatable relative to one another about an axial axis of said tubes.
As the first and second sub-tubes are rotatable relative to one another, this gives a variable fine spray or jet of water through the aligned holes.
In embodiments, the film coating includes a temperature sensor comprising a portion of said film coating.
In embodiments, the steam generator comprises a non-return or one-way valve between the second tube and the water input to prevent water returning to the input.
Preferably, the steam generator comprises a priming mechanism for providing an initial amount of water to the steam generator. Alternatively, the steam generator comprises a pump for providing water to the steam generator. The pump may be mechanical, electrical or a heat pump.
In embodiments the electrical heating element, in particular where it comprises a thin film, for example a layer of semiconducting material, may itself be used as a temperature sensor. In this case a signal maybe modulated onto the electrical power, typically DC or low-frequency AC, supplying the heating element, to enable this signal to be detected by demodulation. For example a higher frequency AC signal than a frequency of an AC current providing power for heating the heating element may be employed. Additionally or alternatively a region of the film maybe defined to be dedicated to temperature sensing and being provided with at least one separate electrode connection (optionally sharing one electrode connection with the heating element).
In a steam generator as described above an electrical power control device or switch maybe incorporated into a layer semiconducting material forming the heating element itself. For example by applying a gate electrode over an insulating layer on a portion of the semiconducting layer an FET (Field Effect Transistor) switch maybe fabricated.
Such a device may be fabricated in a dedicated, separately defined region of the semiconducting layer or may be incorporated into the heating element, for example extending along the length of an electrode connection to the heating element.
Thus in a further aspect the invention provides a steam generator, the steam generator comprising: an electrical power input; an electrical heating element, and an electrical power control device electronically connected between said electrical power input and said electrical heating element; whereas said electrical heating element comprises a layer of semiconducting material on a substrate; wherein said electrical power control device is a semiconductor device; and wherein at least a portion of said semiconductor device comprises a portion of said layer of semiconducting material.
In embodiments the portion of the layer of semiconducting material comprising the electrical power control device is connected in series the material defining the electrical heating element, and in embodiments the semiconductor device and heating element may be part of the same, substantially continuous layer of semiconducting material (rather than needing to be defined in a separate, dedicated region of the semiconducting layer).
The device may comprise a diode, in particular a diode using a metal-semiconductor junction. Alternatively p-type and n-type doped regions of the layer maybe employed to fabricate a bipolar transistor. Alternatively, as previously described, an insulated gate FET (or junction FET) maybe fabricated. In general the power controlled semiconductive device comprises an FET, bipolar transistor, IGBT, thyristor, SCR rectifier, TRIAC, or other device. In embodiments the device and heating element and substrate may be substantially transparent.
Suitable materials include, but are not limited to, tin oxide, for example doped with antimony or fluorine, indium tin oxide, and silicon carbide.
In a related aspect the invention provides method of controlling electrical power to the electrical heating element of an iron comprising a layer of semiconducting material, the method comprising forming a semiconductor device in said semiconducting material comprising said heating element to control said electrical power.
BRIEF DESCRIPTION OF THE DRAWINGS
These and other aspects of the invention will now be further described, by way of example only, and with reference to the accompanying drawings in which Figure 1 shows a cross section through a steam generator according to the invention; Figures 2 and 3 show an iron that is useable in conjunction with the steam generator of figure 1.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
Referring to figure 1, we will now describe a steam generator that makes use of a high power density clear thin film resistive coating (ATO) on a glass / ceramic substrate as the heating element to provide compact steam generation. The steam generator may be used in conjunction with an iron, in particular to an iron as disclosed in our co-pending application filed on the same day as this application, either integral to the iron, or as a stand-alone unit connected to the hub of the iron. Furthermore, the steam generator may also be used within cooking applications for heating and steaming food and in domestic products for steam cleaning (for example cleaning floors, multi-surfaces and upholstery).
An internal sub assembly of perforated tubes (5) (6) can be rotated relative to each other to give a variable fine spray/jet of water through aligned holes (7) directly on the internal surface of an outer (ATO) coated (4) tube heater (1). Steam is created in the internal chamber (8) and forced out under is own pressure through the nozzle (9).
Electrical connection to the resistive coating is made via 2 printed silver contact strips at distal ends of the tube heater (2).
If necessary, a non-return or one way valve can be located at (3) to prevent back pressure into the water reservoir. Under such a scheme it is possible for the mechanism to self pump with an initial priming mechanism.
Alternatively the water would be pumped into the steam generator using an electrical, manual or heat pump.
Key benefits include the ability to create the steam at source (within the iron build) or within a steam generating base/stand and therefore assist with current issues found in current steam generator products ie: * Reduced heat up time of initial steam in cold tube set from generator to iron (at source version) * Reduced limescale build up within tube set, since limescale does not adhere well to either ceramic or glass (at source version) * Minimise the size and cumbersome nature of current generators allowing for more water storage and possible reconfiguration / appeal of stand unit (Upright docking station, see through water container, etc) Another configuration is that this system can be just used as a secondary heat source in an iron component to keep the steam being delivered at high temperature on exit.
Figures 2 and 3 shows an iron as an example application for the steam generator discussed above. The Iron also makes use of clear thin film resistive coating (ATO) on a glass substrate as the heating element to provide the mechanism for heating a sole plate to facilitate crease removal from fabrics.
The iron comprises a glass sole plate (1) and an upper transparent portion (2) attached to a handle (4) via a hub (3). Steam generated by the steam generator is delivered to the garment being ironed through the hub (3), which also forms the fixing point for the glass panels and electrical contact to the film coating on the glass sole.
The sole plate assembly is thermally and electrically insulated from the handle assembly (4) by a combination of a secondary glass sheet (8) laminated over the ATO coating (dotted line 10), an air gap (potential to fill with inert gas, such as krypton, for extra insulation) and a transparent moulded polymer (7).
As mentioned previously, the steam generator may form part of the iron itself, or may be extern to the iron and connected via a suitable connecting hose.
The ATO coating of the steam generator itself can be used to sense the temperature of the element and I or the amount of water present in the heater as well as switching the heating zones or sections of the element, which we shall now describe.
Thermal sensor Typical thin film coatings are intrinsic semiconductors. For example, SiC and tin oxide are both semiconductors with large band gaps (typically 3.2eV). By doping the semiconductor can be made to be n-type or p-type. Typically, impurities make the thin film an n-type semiconductor. For example, ATO is an n-type semiconductor. However p-type semiconductors can also be produced.
Typical thin film materials hence have a reversible resistance -temperature characteristic and thus the heating element itself can be used as a thermal sensor to measure the temperature of the heating element or substrate. Alternatively, a separate area of thin film which does not constitute part of the heating element, but placed on the same substrate close to the element can be used to measure the temperature using a separate low voltage/low current circuit. The area can be manufactured using a masking process when the main heating element is being created.
It is preferred to detect the resistance change using a low voltage / low current so that the sensitivity is improved and the semiconductor is not saturated, hence a separate area for thermal detection is preferred rather than using the bulk element itself. Should the bulk element need to be used, then a high frequency signal multiplexed on to the DC or low frequency AC bias can be used to detect variation in resistance, without the requirement to measure high voltages or currents.
The thermal sensor can also be used to detect the temperature of the water.
Switching mechanism In embodiments the heating elements are required to be switched on and off. This may achieved using a manual switch, a relay or a solid state switching device, generally separated from the heating element itself. However this can add extra cost to the overall system.
Hence, it is desired to create a system by which the heating element switch is included within the heating element. Given that the thin film technology is a semiconductor, it is possible to create at the same time as the heating element different types of semiconductor switch or rectifier. In particular, one can produce a FET device by overlaying a thin insulator, such as mica or silicon dioxide on top so an area of the thin film element (typically where the current enters or leaves the element). On top of the insulator a metallisation layer is created to which a voltage can be applied to switch the element. Further devices are possible: for example, at the metal -thin film junction a Schottky diode is created, further using n-type and p-type variants of silicon carbide or tin oxide it is possible to create a rectifying diode or bipolar transistor. Because the material can withstand high temperatures, there is no need for a heat sink and any heat losses are directly used in the heater, thus increasing efficiency as well as reducing cost. Many of these devices can be transparent and hence can be used within the iron to switch the elements to provide different heating levels and control.
In embodiments the element may be switched by TRIAC switching, with differential choke filtering (for example, a differential mode filter of 1 8mH) for EMC capability.
No doubt many other effective alternatives will occur to the skilled person. It will be understood that the invention is not limited to the described embodiments and encompasses modifications apparent to those skilled in the art lying within the spirit and scope of the claims appended hereto.
Claims (13)
- CLAIMS: 1. A steam generator comprising: a first tube; a second tube located within a bore of said first tube to define a first space between an inner wall of said first tube and an outer wall of said second tube, said second tube being coupled to a water input and having a plurality of conduits for communicating input water to said first space; a steam output coupled to said first space for expelling generated steam; a film coating of doped tin oxide on an outer wall of said first tube; and electronic connections to said film coating to enable electricity to be passed through said film coating to thereby heat water flowing through said first space to generate steam.
- 2. A steam generator according to claim 1, wherein said film coating comprises ATO (antimony tin oxide).
- 3. A steam generator according to claim 1 or 2, wherein said first tube comprises a glass substrate.
- 4. A steam generator according to claim 1 or 2, wherein said first tube comprises a ceramic substrate.
- 5. A steam generator according to claim 1, 2, 3 or 4, wherein said second tube comprises a first sub-tube located within the bore of a second sub-tube to define a second space between an outer wall of said first sub-tube and an inner wall of said second sub-tube, and wherein said first and second sub-tubes comprise a plurality of conduits for communicating input water to said first and second spaces.
- 6. A steam generator according to claim 5, wherein said first and second sub-tubes are rotatable relative to one another about an axial axis of said tubes.
- 7. A steam generator according to any preceding claim, wherein said film coating includes a temperature sensor comprising a portion of said film coating.
- 8. A steam generator according to any preceding claim further comprising: an electrical power input; and an electrical power control device electronically connected between said electrical power input and said film coating; wherein said electrical power control device is a semiconductor device; and wherein at least a portion of said semiconductor device comprises a portion of said film coating.
- 9. A steam generator according to any preceding claim comprising a non-return or one-way valve between the second tube and the water input to prevent water returning to the input.
- 10. A steam generator according to claim 9, comprising a priming mechanism for providing an initial amount of water to the steam generator.
- 11. A steam generator according to claim 9, comprising a pump for providing water to the steam generator.
- 12. A steam generator according to claim 11, wherein said pump is a mechanical, electrical or heat pump.
- 13. A steam generator substantially as herein described with reference to figure 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0908863A GB2470414A (en) | 2009-05-22 | 2009-05-22 | Steam Generator Using Doped Tin Oxide Coated Tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0908863A GB2470414A (en) | 2009-05-22 | 2009-05-22 | Steam Generator Using Doped Tin Oxide Coated Tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB0908863D0 GB0908863D0 (en) | 2009-07-01 |
| GB2470414A true GB2470414A (en) | 2010-11-24 |
Family
ID=40862850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0908863A Withdrawn GB2470414A (en) | 2009-05-22 | 2009-05-22 | Steam Generator Using Doped Tin Oxide Coated Tube |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2470414A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108651828A (en) * | 2018-04-25 | 2018-10-16 | 佛山市甄睿智能科技有限公司 | A kind of food materials pretreatment unit with cold storage function |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1372091A (en) * | 1971-10-07 | 1974-10-30 | Gen Electric | Domestic irons |
| CN2615182Y (en) * | 2003-03-25 | 2004-05-12 | 上海域桥电器有限公司 | Steam generator for steam hanging ironing machine |
| JP2004286265A (en) * | 2003-03-20 | 2004-10-14 | Osada Res Inst Ltd | Steam generator |
| EP1514474A1 (en) * | 2003-09-09 | 2005-03-16 | Samsung Electronics Co., Ltd. | Overheated steam oven |
| WO2008044180A2 (en) * | 2006-10-09 | 2008-04-17 | Koninklijke Philips Electronics N.V. | Steam generator having a hot surface and means for spraying water on the hot surface |
| JP2008128559A (en) * | 2006-11-21 | 2008-06-05 | Seiichi Tan | Pure steam making apparatus |
-
2009
- 2009-05-22 GB GB0908863A patent/GB2470414A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1372091A (en) * | 1971-10-07 | 1974-10-30 | Gen Electric | Domestic irons |
| JP2004286265A (en) * | 2003-03-20 | 2004-10-14 | Osada Res Inst Ltd | Steam generator |
| CN2615182Y (en) * | 2003-03-25 | 2004-05-12 | 上海域桥电器有限公司 | Steam generator for steam hanging ironing machine |
| EP1514474A1 (en) * | 2003-09-09 | 2005-03-16 | Samsung Electronics Co., Ltd. | Overheated steam oven |
| WO2008044180A2 (en) * | 2006-10-09 | 2008-04-17 | Koninklijke Philips Electronics N.V. | Steam generator having a hot surface and means for spraying water on the hot surface |
| JP2008128559A (en) * | 2006-11-21 | 2008-06-05 | Seiichi Tan | Pure steam making apparatus |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108651828A (en) * | 2018-04-25 | 2018-10-16 | 佛山市甄睿智能科技有限公司 | A kind of food materials pretreatment unit with cold storage function |
Also Published As
| Publication number | Publication date |
|---|---|
| GB0908863D0 (en) | 2009-07-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB2470437A (en) | Iron with Glass Substrate Sole Plate | |
| US8346069B2 (en) | Water heating apparatus | |
| GB2470368A (en) | A glass kettle with a heating element comprising a film coating of semiconducting material | |
| JP2003533031A5 (en) | ||
| JP4995898B2 (en) | Hot air generator and hand dryer using the same | |
| GB2470414A (en) | Steam Generator Using Doped Tin Oxide Coated Tube | |
| KR100213110B1 (en) | Thin film heater and its manufaturing method | |
| CN105972570B (en) | Steam generator and steaming plant | |
| JP6301558B2 (en) | Thick film heating element with high thermal conductivity on both sides | |
| JP2011523174A (en) | Self-regulating electric resistance heating element | |
| CN208875408U (en) | Toast the heating component of smoking set and vacuum heat-insulation | |
| GB2479079A (en) | Iron with Metal Frame and Recessed Sole Plate | |
| US1662889A (en) | Electric converter | |
| KR20000047882A (en) | An electric continuous flow heater and a method for its manufacture | |
| US8427033B2 (en) | Domestic appliance comprising a piezoelectric pump provided with a simplified power supply circuit | |
| CN202024464U (en) | Domestic electrical appliance | |
| JP2016515295A (en) | Fluid heater with wire mesh heating segments | |
| CN206586815U (en) | Heating ceramic kettle with infrared heating film | |
| CN109602269A (en) | A kind of nano thin-film heat generating ceramic liner health rice cooker | |
| RU2189541C2 (en) | Electrode type liquid heater | |
| KR200356457Y1 (en) | a Vapor Volume Controller Of a Steam Iron | |
| JPS582549A (en) | Electric water heater | |
| KR200241444Y1 (en) | Carbon heater | |
| WO2009115013A1 (en) | Instant-heating electric water heater | |
| RU2525169C1 (en) | Ac voltage rectifier |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |